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linux/drivers/media/dvb-frontends/mb86a20s.c

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[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
/*
* Fujitu mb86a20s ISDB-T/ISDB-Tsb Module driver
*
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
* Copyright (C) 2010-2013 Mauro Carvalho Chehab <mchehab@redhat.com>
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
* Copyright (C) 2009-2010 Douglas Landgraf <dougsland@redhat.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#include <linux/kernel.h>
#include <asm/div64.h>
#include "dvb_frontend.h"
#include "mb86a20s.h"
static int debug = 1;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");
struct mb86a20s_state {
struct i2c_adapter *i2c;
const struct mb86a20s_config *config;
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
u32 last_frequency;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
struct dvb_frontend frontend;
[media] mb86a20s: Be sure that device is initialized before starting DVB Due to a hard to track bug between tda829x/tda18271/saa7134, tda829x wants to go to analog mode during DVB initialization, causing some I2C errors. The analog failure doesn't cause any harm, as the device were already properly initialized in analog mode. However, the failure at the digital mode causes the frontend mb86a20s to not initialize. Fortunately, at least on my tests, it was possible to detect that the device is a mb86a20s before the failure. What happens is that tda8290 is a very bad boy: during DVB setup, it keeps insisting to call tda18271 analog_set_params, that calls tune_agc code. The tune_agc code calls saa7134 driver, changing the value of GPIO 27, switching from digital to analog mode and disabling the access to mb86a20s, as, on Kworld SBTVD, the same GPIO used to switch the hardware AGC mode seems to be used to enable the I2C switch that allows access to the frontend (mb86a20s). So, a call to analog_set_params ultimately disables the access to the frontend, and causes a failure at the init frontend logic. This patch is a workaround for this issue: it simply checks if the frontend init had any failure. If so, it will init the frontend when some DTV application will try to set DVB mode. Even being a hack for Kworld SBTVD to work, and assumning that we could teach tda8290 to be a good boy, this is actually an improvement at the frontend driver, as it will be more reliable to initialization failures. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-01-14 22:10:05 +08:00
[media] mb86a20s: improve bit error count for BER Do a better job on setting the bit error counters, in order to have all layer measures to happen in a little less than one second. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-15 07:34:55 +08:00
u32 estimated_rate[3];
[media] mb86a20s: Be sure that device is initialized before starting DVB Due to a hard to track bug between tda829x/tda18271/saa7134, tda829x wants to go to analog mode during DVB initialization, causing some I2C errors. The analog failure doesn't cause any harm, as the device were already properly initialized in analog mode. However, the failure at the digital mode causes the frontend mb86a20s to not initialize. Fortunately, at least on my tests, it was possible to detect that the device is a mb86a20s before the failure. What happens is that tda8290 is a very bad boy: during DVB setup, it keeps insisting to call tda18271 analog_set_params, that calls tune_agc code. The tune_agc code calls saa7134 driver, changing the value of GPIO 27, switching from digital to analog mode and disabling the access to mb86a20s, as, on Kworld SBTVD, the same GPIO used to switch the hardware AGC mode seems to be used to enable the I2C switch that allows access to the frontend (mb86a20s). So, a call to analog_set_params ultimately disables the access to the frontend, and causes a failure at the init frontend logic. This patch is a workaround for this issue: it simply checks if the frontend init had any failure. If so, it will init the frontend when some DTV application will try to set DVB mode. Even being a hack for Kworld SBTVD to work, and assumning that we could teach tda8290 to be a good boy, this is actually an improvement at the frontend driver, as it will be more reliable to initialization failures. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-01-14 22:10:05 +08:00
bool need_init;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
};
struct regdata {
u8 reg;
u8 data;
};
[media] mb86a20s: improve bit error count for BER Do a better job on setting the bit error counters, in order to have all layer measures to happen in a little less than one second. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-15 07:34:55 +08:00
#define BER_SAMPLING_RATE 1 /* Seconds */
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
/*
* Initialization sequence: Use whatevere default values that PV SBTVD
* does on its initialisation, obtained via USB snoop
*/
static struct regdata mb86a20s_init[] = {
{ 0x70, 0x0f },
{ 0x70, 0xff },
{ 0x08, 0x01 },
{ 0x09, 0x3e },
mb86a20s: Group registers into the same line On mb86a20s, some registers have sub-addresses, while others not. In order to make easier to compare different settings, group them. No functional changes in this patch. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 20:56:30 +08:00
{ 0x50, 0xd1 }, { 0x51, 0x22 },
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
{ 0x39, 0x01 },
{ 0x71, 0x00 },
mb86a20s: Group registers into the same line On mb86a20s, some registers have sub-addresses, while others not. In order to make easier to compare different settings, group them. No functional changes in this patch. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 20:56:30 +08:00
{ 0x28, 0x2a }, { 0x29, 0x00 }, { 0x2a, 0xff }, { 0x2b, 0x80 },
{ 0x28, 0x20 }, { 0x29, 0x33 }, { 0x2a, 0xdf }, { 0x2b, 0xa9 },
mb86a20s: Add a few more register settings at the init seq Some time ago, Manoel sent us a patch adding more stuff to the init sequence. However, his patch were also doing non-related stuff, by changing the init logic without any good reason. So, it was asked for him to submit a patch with just the data that has changed, in order to allow us to better analyze it. As he didn't what it was requested, I finally found some time to dig into his init sequence and add it here. Basically, new stuff is added there. There are a few changes: 1) The removal of the extra (duplicated) logic that puts the chip into the serial mode; 2) Some Viterbi VBER measurement init data was changed from 0x00 to 0xff for layer A, to match what was done for layers B and C. None of those caused any regressions and both make sense on my eyes. The other parameters additions actually increased the tuning quality for some channels. Yet, some channels that were previously discovered with scan disappered, while others appeared instead. This were tested in Brasilia, with an external antena. At the overall, it is now a little better. So, better to add these, and then try to figure out a configuration that would get even better scanning results. Reported-by: Manoel Pinheiro <pinusdtv@hotmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 21:00:28 +08:00
{ 0x28, 0x22 }, { 0x29, 0x00 }, { 0x2a, 0x1f }, { 0x2b, 0xf0 },
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
{ 0x3b, 0x21 },
{ 0x3c, 0x3a },
{ 0x01, 0x0d },
mb86a20s: Group registers into the same line On mb86a20s, some registers have sub-addresses, while others not. In order to make easier to compare different settings, group them. No functional changes in this patch. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 20:56:30 +08:00
{ 0x04, 0x08 }, { 0x05, 0x05 },
{ 0x04, 0x0e }, { 0x05, 0x00 },
{ 0x04, 0x0f }, { 0x05, 0x14 },
{ 0x04, 0x0b }, { 0x05, 0x8c },
{ 0x04, 0x00 }, { 0x05, 0x00 },
{ 0x04, 0x01 }, { 0x05, 0x07 },
{ 0x04, 0x02 }, { 0x05, 0x0f },
{ 0x04, 0x03 }, { 0x05, 0xa0 },
{ 0x04, 0x09 }, { 0x05, 0x00 },
{ 0x04, 0x0a }, { 0x05, 0xff },
{ 0x04, 0x27 }, { 0x05, 0x64 },
{ 0x04, 0x28 }, { 0x05, 0x00 },
{ 0x04, 0x1e }, { 0x05, 0xff },
{ 0x04, 0x29 }, { 0x05, 0x0a },
{ 0x04, 0x32 }, { 0x05, 0x0a },
{ 0x04, 0x14 }, { 0x05, 0x02 },
{ 0x04, 0x04 }, { 0x05, 0x00 },
{ 0x04, 0x05 }, { 0x05, 0x22 },
{ 0x04, 0x06 }, { 0x05, 0x0e },
{ 0x04, 0x07 }, { 0x05, 0xd8 },
{ 0x04, 0x12 }, { 0x05, 0x00 },
{ 0x04, 0x13 }, { 0x05, 0xff },
mb86a20s: Add a few more register settings at the init seq Some time ago, Manoel sent us a patch adding more stuff to the init sequence. However, his patch were also doing non-related stuff, by changing the init logic without any good reason. So, it was asked for him to submit a patch with just the data that has changed, in order to allow us to better analyze it. As he didn't what it was requested, I finally found some time to dig into his init sequence and add it here. Basically, new stuff is added there. There are a few changes: 1) The removal of the extra (duplicated) logic that puts the chip into the serial mode; 2) Some Viterbi VBER measurement init data was changed from 0x00 to 0xff for layer A, to match what was done for layers B and C. None of those caused any regressions and both make sense on my eyes. The other parameters additions actually increased the tuning quality for some channels. Yet, some channels that were previously discovered with scan disappered, while others appeared instead. This were tested in Brasilia, with an external antena. At the overall, it is now a little better. So, better to add these, and then try to figure out a configuration that would get even better scanning results. Reported-by: Manoel Pinheiro <pinusdtv@hotmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 21:00:28 +08:00
{ 0x04, 0x15 }, { 0x05, 0x4e },
{ 0x04, 0x16 }, { 0x05, 0x20 },
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
/*
* On this demod, when the bit count reaches the count below,
* it collects the bit error count. The bit counters are initialized
* to 65535 here. This warrants that all of them will be quickly
* calculated when device gets locked. As TMCC is parsed, the values
[media] mb86a20s: improve bit error count for BER Do a better job on setting the bit error counters, in order to have all layer measures to happen in a little less than one second. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-15 07:34:55 +08:00
* will be adjusted later in the driver's code.
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
*/
{ 0x52, 0x01 }, /* Turn on BER before Viterbi */
{ 0x50, 0xa7 }, { 0x51, 0x00 },
mb86a20s: Group registers into the same line On mb86a20s, some registers have sub-addresses, while others not. In order to make easier to compare different settings, group them. No functional changes in this patch. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 20:56:30 +08:00
{ 0x50, 0xa8 }, { 0x51, 0xff },
{ 0x50, 0xa9 }, { 0x51, 0xff },
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
{ 0x50, 0xaa }, { 0x51, 0x00 },
mb86a20s: Group registers into the same line On mb86a20s, some registers have sub-addresses, while others not. In order to make easier to compare different settings, group them. No functional changes in this patch. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 20:56:30 +08:00
{ 0x50, 0xab }, { 0x51, 0xff },
{ 0x50, 0xac }, { 0x51, 0xff },
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
{ 0x50, 0xad }, { 0x51, 0x00 },
mb86a20s: Group registers into the same line On mb86a20s, some registers have sub-addresses, while others not. In order to make easier to compare different settings, group them. No functional changes in this patch. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 20:56:30 +08:00
{ 0x50, 0xae }, { 0x51, 0xff },
{ 0x50, 0xaf }, { 0x51, 0xff },
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
{ 0x5e, 0x00 }, /* Turn off BER after Viterbi */
mb86a20s: Group registers into the same line On mb86a20s, some registers have sub-addresses, while others not. In order to make easier to compare different settings, group them. No functional changes in this patch. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 20:56:30 +08:00
{ 0x50, 0xdc }, { 0x51, 0x01 },
{ 0x50, 0xdd }, { 0x51, 0xf4 },
{ 0x50, 0xde }, { 0x51, 0x01 },
{ 0x50, 0xdf }, { 0x51, 0xf4 },
{ 0x50, 0xe0 }, { 0x51, 0x01 },
{ 0x50, 0xe1 }, { 0x51, 0xf4 },
{ 0x50, 0xb0 }, { 0x51, 0x07 },
{ 0x50, 0xb2 }, { 0x51, 0xff },
{ 0x50, 0xb3 }, { 0x51, 0xff },
{ 0x50, 0xb4 }, { 0x51, 0xff },
{ 0x50, 0xb5 }, { 0x51, 0xff },
{ 0x50, 0xb6 }, { 0x51, 0xff },
{ 0x50, 0xb7 }, { 0x51, 0xff },
[media] mb86a20s: add CNR measurement Add Signal/Noise ratio measurement. On this device, a global measure is taken by the demod. It also provides per-layer CNR measurements, based on Modulation Error measures (MER). Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-17 02:12:05 +08:00
{ 0x50, 0x50 }, { 0x51, 0x02 }, /* MER manual mode */
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
{ 0x50, 0x51 }, { 0x51, 0x04 }, /* MER symbol 4 */
{ 0x45, 0x04 }, /* CN symbol 4 */
[media] mb86a20s: add CNR measurement Add Signal/Noise ratio measurement. On this device, a global measure is taken by the demod. It also provides per-layer CNR measurements, based on Modulation Error measures (MER). Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-17 02:12:05 +08:00
{ 0x48, 0x04 }, /* CN manual mode */
mb86a20s: Group registers into the same line On mb86a20s, some registers have sub-addresses, while others not. In order to make easier to compare different settings, group them. No functional changes in this patch. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 20:56:30 +08:00
{ 0x50, 0xd5 }, { 0x51, 0x01 }, /* Serial */
{ 0x50, 0xd6 }, { 0x51, 0x1f },
{ 0x50, 0xd2 }, { 0x51, 0x03 },
{ 0x50, 0xd7 }, { 0x51, 0x3f },
mb86a20s: Add a few more register settings at the init seq Some time ago, Manoel sent us a patch adding more stuff to the init sequence. However, his patch were also doing non-related stuff, by changing the init logic without any good reason. So, it was asked for him to submit a patch with just the data that has changed, in order to allow us to better analyze it. As he didn't what it was requested, I finally found some time to dig into his init sequence and add it here. Basically, new stuff is added there. There are a few changes: 1) The removal of the extra (duplicated) logic that puts the chip into the serial mode; 2) Some Viterbi VBER measurement init data was changed from 0x00 to 0xff for layer A, to match what was done for layers B and C. None of those caused any regressions and both make sense on my eyes. The other parameters additions actually increased the tuning quality for some channels. Yet, some channels that were previously discovered with scan disappered, while others appeared instead. This were tested in Brasilia, with an external antena. At the overall, it is now a little better. So, better to add these, and then try to figure out a configuration that would get even better scanning results. Reported-by: Manoel Pinheiro <pinusdtv@hotmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 21:00:28 +08:00
{ 0x28, 0x74 }, { 0x29, 0x00 }, { 0x28, 0x74 }, { 0x29, 0x40 },
{ 0x28, 0x46 }, { 0x29, 0x2c }, { 0x28, 0x46 }, { 0x29, 0x0c },
[media] mb86a20s: make AGC work better It is recommented to change register 0x0440 value to 0, in order to fix some AGC bug. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-15 01:12:10 +08:00
{ 0x04, 0x40 }, { 0x05, 0x00 },
mb86a20s: Add a few more register settings at the init seq Some time ago, Manoel sent us a patch adding more stuff to the init sequence. However, his patch were also doing non-related stuff, by changing the init logic without any good reason. So, it was asked for him to submit a patch with just the data that has changed, in order to allow us to better analyze it. As he didn't what it was requested, I finally found some time to dig into his init sequence and add it here. Basically, new stuff is added there. There are a few changes: 1) The removal of the extra (duplicated) logic that puts the chip into the serial mode; 2) Some Viterbi VBER measurement init data was changed from 0x00 to 0xff for layer A, to match what was done for layers B and C. None of those caused any regressions and both make sense on my eyes. The other parameters additions actually increased the tuning quality for some channels. Yet, some channels that were previously discovered with scan disappered, while others appeared instead. This were tested in Brasilia, with an external antena. At the overall, it is now a little better. So, better to add these, and then try to figure out a configuration that would get even better scanning results. Reported-by: Manoel Pinheiro <pinusdtv@hotmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 21:00:28 +08:00
{ 0x28, 0x00 }, { 0x29, 0x10 },
{ 0x28, 0x05 }, { 0x29, 0x02 },
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
{ 0x1c, 0x01 },
mb86a20s: Group registers into the same line On mb86a20s, some registers have sub-addresses, while others not. In order to make easier to compare different settings, group them. No functional changes in this patch. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 20:56:30 +08:00
{ 0x28, 0x06 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x03 },
{ 0x28, 0x07 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x0d },
{ 0x28, 0x08 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x02 },
{ 0x28, 0x09 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x01 },
{ 0x28, 0x0a }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x21 },
{ 0x28, 0x0b }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x29 },
{ 0x28, 0x0c }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x16 },
{ 0x28, 0x0d }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x31 },
{ 0x28, 0x0e }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x0e },
{ 0x28, 0x0f }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x4e },
{ 0x28, 0x10 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x46 },
{ 0x28, 0x11 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x0f },
{ 0x28, 0x12 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x56 },
{ 0x28, 0x13 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x35 },
{ 0x28, 0x14 }, { 0x29, 0x00 }, { 0x2a, 0x01 }, { 0x2b, 0xbe },
{ 0x28, 0x15 }, { 0x29, 0x00 }, { 0x2a, 0x01 }, { 0x2b, 0x84 },
{ 0x28, 0x16 }, { 0x29, 0x00 }, { 0x2a, 0x03 }, { 0x2b, 0xee },
{ 0x28, 0x17 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x98 },
{ 0x28, 0x18 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x9f },
{ 0x28, 0x19 }, { 0x29, 0x00 }, { 0x2a, 0x07 }, { 0x2b, 0xb2 },
{ 0x28, 0x1a }, { 0x29, 0x00 }, { 0x2a, 0x06 }, { 0x2b, 0xc2 },
{ 0x28, 0x1b }, { 0x29, 0x00 }, { 0x2a, 0x07 }, { 0x2b, 0x4a },
{ 0x28, 0x1c }, { 0x29, 0x00 }, { 0x2a, 0x01 }, { 0x2b, 0xbc },
{ 0x28, 0x1d }, { 0x29, 0x00 }, { 0x2a, 0x04 }, { 0x2b, 0xba },
{ 0x28, 0x1e }, { 0x29, 0x00 }, { 0x2a, 0x06 }, { 0x2b, 0x14 },
{ 0x50, 0x1e }, { 0x51, 0x5d },
{ 0x50, 0x22 }, { 0x51, 0x00 },
{ 0x50, 0x23 }, { 0x51, 0xc8 },
{ 0x50, 0x24 }, { 0x51, 0x00 },
{ 0x50, 0x25 }, { 0x51, 0xf0 },
{ 0x50, 0x26 }, { 0x51, 0x00 },
{ 0x50, 0x27 }, { 0x51, 0xc3 },
{ 0x50, 0x39 }, { 0x51, 0x02 },
mb86a20s: Add a few more register settings at the init seq Some time ago, Manoel sent us a patch adding more stuff to the init sequence. However, his patch were also doing non-related stuff, by changing the init logic without any good reason. So, it was asked for him to submit a patch with just the data that has changed, in order to allow us to better analyze it. As he didn't what it was requested, I finally found some time to dig into his init sequence and add it here. Basically, new stuff is added there. There are a few changes: 1) The removal of the extra (duplicated) logic that puts the chip into the serial mode; 2) Some Viterbi VBER measurement init data was changed from 0x00 to 0xff for layer A, to match what was done for layers B and C. None of those caused any regressions and both make sense on my eyes. The other parameters additions actually increased the tuning quality for some channels. Yet, some channels that were previously discovered with scan disappered, while others appeared instead. This were tested in Brasilia, with an external antena. At the overall, it is now a little better. So, better to add these, and then try to figure out a configuration that would get even better scanning results. Reported-by: Manoel Pinheiro <pinusdtv@hotmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-11 21:00:28 +08:00
{ 0x28, 0x6a }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x00 },
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
{ 0xd0, 0x00 },
};
static struct regdata mb86a20s_reset_reception[] = {
{ 0x70, 0xf0 },
{ 0x70, 0xff },
{ 0x08, 0x01 },
{ 0x08, 0x00 },
};
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
static struct regdata mb86a20s_vber_reset[] = {
{ 0x53, 0x00 }, /* VBER Counter reset */
{ 0x53, 0x07 },
};
static struct regdata mb86a20s_per_reset[] = {
{ 0x50, 0xb1 }, /* PER Counter reset */
{ 0x51, 0x07 },
{ 0x51, 0x00 },
};
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
/*
* I2C read/write functions and macros
*/
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
static int mb86a20s_i2c_writereg(struct mb86a20s_state *state,
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
u8 i2c_addr, u8 reg, u8 data)
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
{
u8 buf[] = { reg, data };
struct i2c_msg msg = {
.addr = i2c_addr, .flags = 0, .buf = buf, .len = 2
};
int rc;
rc = i2c_transfer(state->i2c, &msg, 1);
if (rc != 1) {
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_err(&state->i2c->dev,
"%s: writereg error (rc == %i, reg == 0x%02x, data == 0x%02x)\n",
__func__, rc, reg, data);
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
return rc;
}
return 0;
}
static int mb86a20s_i2c_writeregdata(struct mb86a20s_state *state,
u8 i2c_addr, struct regdata *rd, int size)
{
int i, rc;
for (i = 0; i < size; i++) {
rc = mb86a20s_i2c_writereg(state, i2c_addr, rd[i].reg,
rd[i].data);
if (rc < 0)
return rc;
}
return 0;
}
static int mb86a20s_i2c_readreg(struct mb86a20s_state *state,
u8 i2c_addr, u8 reg)
{
u8 val;
int rc;
struct i2c_msg msg[] = {
{ .addr = i2c_addr, .flags = 0, .buf = &reg, .len = 1 },
{ .addr = i2c_addr, .flags = I2C_M_RD, .buf = &val, .len = 1 }
};
rc = i2c_transfer(state->i2c, msg, 2);
if (rc != 2) {
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_err(&state->i2c->dev, "%s: reg=0x%x (error=%d)\n",
__func__, reg, rc);
return (rc < 0) ? rc : -EIO;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
}
return val;
}
#define mb86a20s_readreg(state, reg) \
mb86a20s_i2c_readreg(state, state->config->demod_address, reg)
#define mb86a20s_writereg(state, reg, val) \
mb86a20s_i2c_writereg(state, state->config->demod_address, reg, val)
#define mb86a20s_writeregdata(state, regdata) \
mb86a20s_i2c_writeregdata(state, state->config->demod_address, \
regdata, ARRAY_SIZE(regdata))
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
/*
* Ancillary internal routines (likely compiled inlined)
*
* The functions below assume that gateway lock has already obtained
*/
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
static int mb86a20s_read_status(struct dvb_frontend *fe, fe_status_t *status)
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
{
struct mb86a20s_state *state = fe->demodulator_priv;
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
int val;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
*status = 0;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
val = mb86a20s_readreg(state, 0x0a) & 0xf;
if (val < 0)
return val;
[media] Add support for Kworld SBTVD board Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-03 16:27:59 +08:00
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
if (val >= 2)
*status |= FE_HAS_SIGNAL;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
if (val >= 4)
*status |= FE_HAS_CARRIER;
[media] mb86a20s: add support for serial streams By comparing the traffic between Pixelview (cx23102-based and Kworld (saa7134-based), the only difference is at register 0xd5. After some tests, It seems that it is used to change mode between serial and parallel. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-04 03:48:49 +08:00
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
if (val >= 5)
*status |= FE_HAS_VITERBI;
[media] mb86a20s: add support for serial streams By comparing the traffic between Pixelview (cx23102-based and Kworld (saa7134-based), the only difference is at register 0xd5. After some tests, It seems that it is used to change mode between serial and parallel. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-04 03:48:49 +08:00
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
if (val >= 7)
*status |= FE_HAS_SYNC;
[media] Add support for Kworld SBTVD board Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-03 16:27:59 +08:00
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
if (val >= 8) /* Maybe 9? */
*status |= FE_HAS_LOCK;
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_dbg(&state->i2c->dev, "%s: Status = 0x%02x (state = %d)\n",
__func__, *status, val);
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
return 0;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
}
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
static int mb86a20s_read_signal_strength(struct dvb_frontend *fe)
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
{
struct mb86a20s_state *state = fe->demodulator_priv;
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
int rc;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
unsigned rf_max, rf_min, rf;
[media] Add support for Kworld SBTVD board Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-03 16:27:59 +08:00
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
/* Does a binary search to get RF strength */
rf_max = 0xfff;
rf_min = 0;
do {
rf = (rf_max + rf_min) / 2;
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
rc = mb86a20s_writereg(state, 0x04, 0x1f);
if (rc < 0)
return rc;
rc = mb86a20s_writereg(state, 0x05, rf >> 8);
if (rc < 0)
return rc;
rc = mb86a20s_writereg(state, 0x04, 0x20);
if (rc < 0)
return rc;
rc = mb86a20s_writereg(state, 0x04, rf);
if (rc < 0)
return rc;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
rc = mb86a20s_readreg(state, 0x02);
if (rc < 0)
return rc;
if (rc & 0x08)
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
rf_min = (rf_max + rf_min) / 2;
else
rf_max = (rf_max + rf_min) / 2;
if (rf_max - rf_min < 4) {
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
rf = (rf_max + rf_min) / 2;
/* Rescale it from 2^12 (4096) to 2^16 */
rf <<= (16 - 12);
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_dbg(&state->i2c->dev,
"%s: signal strength = %d (%d < RF=%d < %d)\n",
__func__, rf, rf_min, rf >> 4, rf_max);
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
return rf;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
}
} while (1);
return 0;
}
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
static int mb86a20s_get_modulation(struct mb86a20s_state *state,
unsigned layer)
{
int rc;
static unsigned char reg[] = {
[0] = 0x86, /* Layer A */
[1] = 0x8a, /* Layer B */
[2] = 0x8e, /* Layer C */
};
[media] mb86a20s: fix off by one checks Clearly ">=" was intended here instead of ">". Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-13 13:28:34 +08:00
if (layer >= ARRAY_SIZE(reg))
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
return -EINVAL;
rc = mb86a20s_writereg(state, 0x6d, reg[layer]);
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x6e);
if (rc < 0)
return rc;
[media] mb86a20s: fix interleaving and FEC retrival Get the proper bits from the TMCC table registers. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 23:31:13 +08:00
switch ((rc >> 4) & 0x07) {
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
case 0:
return DQPSK;
case 1:
return QPSK;
case 2:
return QAM_16;
case 3:
return QAM_64;
default:
return QAM_AUTO;
}
}
static int mb86a20s_get_fec(struct mb86a20s_state *state,
unsigned layer)
{
int rc;
static unsigned char reg[] = {
[0] = 0x87, /* Layer A */
[1] = 0x8b, /* Layer B */
[2] = 0x8f, /* Layer C */
};
[media] mb86a20s: fix off by one checks Clearly ">=" was intended here instead of ">". Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-13 13:28:34 +08:00
if (layer >= ARRAY_SIZE(reg))
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
return -EINVAL;
rc = mb86a20s_writereg(state, 0x6d, reg[layer]);
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x6e);
if (rc < 0)
return rc;
[media] mb86a20s: fix interleaving and FEC retrival Get the proper bits from the TMCC table registers. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 23:31:13 +08:00
switch ((rc >> 4) & 0x07) {
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
case 0:
return FEC_1_2;
case 1:
return FEC_2_3;
case 2:
return FEC_3_4;
case 3:
return FEC_5_6;
case 4:
return FEC_7_8;
default:
return FEC_AUTO;
}
}
static int mb86a20s_get_interleaving(struct mb86a20s_state *state,
unsigned layer)
{
int rc;
static unsigned char reg[] = {
[0] = 0x88, /* Layer A */
[1] = 0x8c, /* Layer B */
[2] = 0x90, /* Layer C */
};
[media] mb86a20s: fix off by one checks Clearly ">=" was intended here instead of ">". Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-13 13:28:34 +08:00
if (layer >= ARRAY_SIZE(reg))
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
return -EINVAL;
rc = mb86a20s_writereg(state, 0x6d, reg[layer]);
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x6e);
if (rc < 0)
return rc;
[media] mb86a20s: fix interleaving and FEC retrival Get the proper bits from the TMCC table registers. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 23:31:13 +08:00
switch ((rc >> 4) & 0x07) {
case 1:
return GUARD_INTERVAL_1_4;
case 2:
return GUARD_INTERVAL_1_8;
case 3:
return GUARD_INTERVAL_1_16;
case 4:
return GUARD_INTERVAL_1_32;
default:
case 0:
return GUARD_INTERVAL_AUTO;
}
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
}
static int mb86a20s_get_segment_count(struct mb86a20s_state *state,
unsigned layer)
{
int rc, count;
static unsigned char reg[] = {
[0] = 0x89, /* Layer A */
[1] = 0x8d, /* Layer B */
[2] = 0x91, /* Layer C */
};
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
[media] mb86a20s: fix off by one checks Clearly ">=" was intended here instead of ">". Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-13 13:28:34 +08:00
if (layer >= ARRAY_SIZE(reg))
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
return -EINVAL;
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
rc = mb86a20s_writereg(state, 0x6d, reg[layer]);
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x6e);
if (rc < 0)
return rc;
count = (rc >> 4) & 0x0f;
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_dbg(&state->i2c->dev, "%s: segments: %d.\n", __func__, count);
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
return count;
}
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
static void mb86a20s_reset_frontend_cache(struct dvb_frontend *fe)
{
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
struct mb86a20s_state *state = fe->demodulator_priv;
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
/* Fixed parameters */
c->delivery_system = SYS_ISDBT;
c->bandwidth_hz = 6000000;
/* Initialize values that will be later autodetected */
c->isdbt_layer_enabled = 0;
c->transmission_mode = TRANSMISSION_MODE_AUTO;
c->guard_interval = GUARD_INTERVAL_AUTO;
c->isdbt_sb_mode = 0;
c->isdbt_sb_segment_count = 0;
}
[media] mb86a20s: improve bit error count for BER Do a better job on setting the bit error counters, in order to have all layer measures to happen in a little less than one second. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-15 07:34:55 +08:00
/*
* Estimates the bit rate using the per-segment bit rate given by
* ABNT/NBR 15601 spec (table 4).
*/
static u32 isdbt_rate[3][5][4] = {
{ /* DQPSK/QPSK */
{ 280850, 312060, 330420, 340430 }, /* 1/2 */
{ 374470, 416080, 440560, 453910 }, /* 2/3 */
{ 421280, 468090, 495630, 510650 }, /* 3/4 */
{ 468090, 520100, 550700, 567390 }, /* 5/6 */
{ 491500, 546110, 578230, 595760 }, /* 7/8 */
}, { /* QAM16 */
{ 561710, 624130, 660840, 680870 }, /* 1/2 */
{ 748950, 832170, 881120, 907820 }, /* 2/3 */
{ 842570, 936190, 991260, 1021300 }, /* 3/4 */
{ 936190, 1040210, 1101400, 1134780 }, /* 5/6 */
{ 983000, 1092220, 1156470, 1191520 }, /* 7/8 */
}, { /* QAM64 */
{ 842570, 936190, 991260, 1021300 }, /* 1/2 */
{ 1123430, 1248260, 1321680, 1361740 }, /* 2/3 */
{ 1263860, 1404290, 1486900, 1531950 }, /* 3/4 */
{ 1404290, 1560320, 1652110, 1702170 }, /* 5/6 */
{ 1474500, 1638340, 1734710, 1787280 }, /* 7/8 */
}
};
static void mb86a20s_layer_bitrate(struct dvb_frontend *fe, u32 layer,
u32 modulation, u32 fec, u32 interleaving,
u32 segment)
{
struct mb86a20s_state *state = fe->demodulator_priv;
u32 rate;
int m, f, i;
/*
* If modulation/fec/interleaving is not detected, the default is
* to consider the lowest bit rate, to avoid taking too long time
* to get BER.
*/
switch (modulation) {
case DQPSK:
case QPSK:
default:
m = 0;
break;
case QAM_16:
m = 1;
break;
case QAM_64:
m = 2;
break;
}
switch (fec) {
default:
case FEC_1_2:
case FEC_AUTO:
f = 0;
break;
case FEC_2_3:
f = 1;
break;
case FEC_3_4:
f = 2;
break;
case FEC_5_6:
f = 3;
break;
case FEC_7_8:
f = 4;
break;
}
switch (interleaving) {
default:
case GUARD_INTERVAL_1_4:
i = 0;
break;
case GUARD_INTERVAL_1_8:
i = 1;
break;
case GUARD_INTERVAL_1_16:
i = 2;
break;
case GUARD_INTERVAL_1_32:
i = 3;
break;
}
/* Samples BER at BER_SAMPLING_RATE seconds */
rate = isdbt_rate[m][f][i] * segment * BER_SAMPLING_RATE;
/* Avoids sampling too quickly or to overflow the register */
if (rate < 256)
rate = 256;
else if (rate > (1 << 24) - 1)
rate = (1 << 24) - 1;
dev_dbg(&state->i2c->dev,
"%s: layer %c bitrate: %d kbps; counter = %d (0x%06x)\n",
__func__, 'A' + layer, segment * isdbt_rate[m][f][i]/1000,
rate, rate);
state->estimated_rate[i] = rate;
}
[media] dvb: don't require a parameter for get_frontend Just like set_frontend, use the dvb cache properties for get_frontend. This is more consistent, as both functions are now symetric. Also, at the places get_frontend is called, it makes sense to update the cache. Most of this patch were generated by this small perl script: while (<>) { $file .= $_; } if ($file =~ m/\.get_frontend\s*=\s*([\d\w_]+)/) { my $get = $1; $file =~ s/($get)(\s*\([^\,\)]+)\,\s*struct\s+dtv_frontend_properties\s*\*\s*([_\d\w]+)\)\s*\{/\1\2)\n{\n\tstruct dtv_frontend_properties *\3 = &fe->dtv_property_cache;/g; } print $file; Of course, the changes at dvb_frontend.[ch] were made by hand, as well as the changes on a few other places, where get_frontend() is called internally inside the driver. On some places, get_frontend() were just a void function. Those occurrences were removed, as the DVB core handles such cases. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-12-30 22:30:21 +08:00
static int mb86a20s_get_frontend(struct dvb_frontend *fe)
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
{
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
struct mb86a20s_state *state = fe->demodulator_priv;
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
int i, rc;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
/* Reset frontend cache to default values */
mb86a20s_reset_frontend_cache(fe);
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
/* Check for partial reception */
rc = mb86a20s_writereg(state, 0x6d, 0x85);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x6e);
if (rc < 0)
return rc;
c->isdbt_partial_reception = (rc & 0x10) ? 1 : 0;
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
/* Get per-layer data */
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
for (i = 0; i < 3; i++) {
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_dbg(&state->i2c->dev, "%s: getting data for layer %c.\n",
__func__, 'A' + i);
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
rc = mb86a20s_get_segment_count(state, i);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
if (rc < 0)
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
goto noperlayer_error;
[media] mb86a20s: improve bit error count for BER Do a better job on setting the bit error counters, in order to have all layer measures to happen in a little less than one second. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-15 07:34:55 +08:00
if (rc >= 0 && rc < 14) {
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
c->layer[i].segment_count = rc;
[media] mb86a20s: improve bit error count for BER Do a better job on setting the bit error counters, in order to have all layer measures to happen in a little less than one second. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-15 07:34:55 +08:00
} else {
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
c->layer[i].segment_count = 0;
[media] mb86a20s: improve bit error count for BER Do a better job on setting the bit error counters, in order to have all layer measures to happen in a little less than one second. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-15 07:34:55 +08:00
state->estimated_rate[i] = 0;
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
continue;
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
}
c->isdbt_layer_enabled |= 1 << i;
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
rc = mb86a20s_get_modulation(state, i);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
if (rc < 0)
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
goto noperlayer_error;
dev_dbg(&state->i2c->dev, "%s: modulation %d.\n",
__func__, rc);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
c->layer[i].modulation = rc;
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
rc = mb86a20s_get_fec(state, i);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
if (rc < 0)
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
goto noperlayer_error;
dev_dbg(&state->i2c->dev, "%s: FEC %d.\n",
__func__, rc);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
c->layer[i].fec = rc;
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
rc = mb86a20s_get_interleaving(state, i);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
if (rc < 0)
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
goto noperlayer_error;
dev_dbg(&state->i2c->dev, "%s: interleaving %d.\n",
__func__, rc);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
c->layer[i].interleaving = rc;
[media] mb86a20s: improve bit error count for BER Do a better job on setting the bit error counters, in order to have all layer measures to happen in a little less than one second. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-15 07:34:55 +08:00
mb86a20s_layer_bitrate(fe, i, c->layer[i].modulation,
c->layer[i].fec,
c->layer[i].interleaving,
c->layer[i].segment_count);
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
}
rc = mb86a20s_writereg(state, 0x6d, 0x84);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
if (rc < 0)
return rc;
if ((rc & 0x60) == 0x20) {
c->isdbt_sb_mode = 1;
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
/* At least, one segment should exist */
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
if (!c->isdbt_sb_segment_count)
c->isdbt_sb_segment_count = 1;
}
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
/* Get transmission mode and guard interval */
rc = mb86a20s_readreg(state, 0x07);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
if (rc < 0)
return rc;
if ((rc & 0x60) == 0x20) {
switch (rc & 0x0c >> 2) {
case 0:
c->transmission_mode = TRANSMISSION_MODE_2K;
break;
case 1:
c->transmission_mode = TRANSMISSION_MODE_4K;
break;
case 2:
c->transmission_mode = TRANSMISSION_MODE_8K;
break;
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
}
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
}
if (!(rc & 0x10)) {
switch (rc & 0x3) {
case 0:
c->guard_interval = GUARD_INTERVAL_1_4;
break;
case 1:
c->guard_interval = GUARD_INTERVAL_1_8;
break;
case 2:
c->guard_interval = GUARD_INTERVAL_1_16;
break;
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
}
}
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
return 0;
[media] mb86a20s: implement get_frontend() Reports the auto-detected parameters to userspace. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-10 04:16:36 +08:00
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
noperlayer_error:
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
/* per-layer info is incomplete; discard all per-layer */
c->isdbt_layer_enabled = 0;
return rc;
}
static int mb86a20s_reset_counters(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int rc, val;
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
/* Reset the counters, if the channel changed */
if (state->last_frequency != c->frequency) {
memset(&c->strength, 0, sizeof(c->strength));
memset(&c->cnr, 0, sizeof(c->cnr));
memset(&c->pre_bit_error, 0, sizeof(c->pre_bit_error));
memset(&c->pre_bit_count, 0, sizeof(c->pre_bit_count));
memset(&c->block_error, 0, sizeof(c->block_error));
memset(&c->block_count, 0, sizeof(c->block_count));
state->last_frequency = c->frequency;
}
/* Clear status for most stats */
/* BER counter reset */
rc = mb86a20s_writeregdata(state, mb86a20s_vber_reset);
if (rc < 0)
goto err;
/* MER, PER counter reset */
rc = mb86a20s_writeregdata(state, mb86a20s_per_reset);
if (rc < 0)
goto err;
/* CNR counter reset */
rc = mb86a20s_readreg(state, 0x45);
if (rc < 0)
goto err;
val = rc;
rc = mb86a20s_writereg(state, 0x45, val | 0x10);
if (rc < 0)
goto err;
rc = mb86a20s_writereg(state, 0x45, val & 0x6f);
if (rc < 0)
goto err;
/* MER counter reset */
rc = mb86a20s_writereg(state, 0x50, 0x50);
if (rc < 0)
goto err;
rc = mb86a20s_readreg(state, 0x51);
if (rc < 0)
goto err;
val = rc;
rc = mb86a20s_writereg(state, 0x51, val | 0x01);
if (rc < 0)
goto err;
rc = mb86a20s_writereg(state, 0x51, val & 0x06);
if (rc < 0)
goto err;
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
goto ok;
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
err:
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
dev_err(&state->i2c->dev,
"%s: Can't reset FE statistics (error %d).\n",
__func__, rc);
ok:
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
return rc;
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
}
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
static int mb86a20s_get_ber_before_vterbi(struct dvb_frontend *fe,
unsigned layer,
u32 *error, u32 *count)
{
struct mb86a20s_state *state = fe->demodulator_priv;
int rc;
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
if (layer >= 3)
return -EINVAL;
/* Check if the BER measures are already available */
rc = mb86a20s_readreg(state, 0x54);
if (rc < 0)
return rc;
/* Check if data is available for that layer */
if (!(rc & (1 << layer))) {
dev_dbg(&state->i2c->dev,
"%s: BER for layer %c is not available yet.\n",
__func__, 'A' + layer);
return -EBUSY;
}
/* Read Bit Error Count */
rc = mb86a20s_readreg(state, 0x55 + layer * 3);
if (rc < 0)
return rc;
*error = rc << 16;
rc = mb86a20s_readreg(state, 0x56 + layer * 3);
if (rc < 0)
return rc;
*error |= rc << 8;
rc = mb86a20s_readreg(state, 0x57 + layer * 3);
if (rc < 0)
return rc;
*error |= rc;
dev_dbg(&state->i2c->dev,
"%s: bit error before Viterbi for layer %c: %d.\n",
__func__, 'A' + layer, *error);
/* Read Bit Count */
rc = mb86a20s_writereg(state, 0x50, 0xa7 + layer * 3);
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x51);
if (rc < 0)
return rc;
*count = rc << 16;
rc = mb86a20s_writereg(state, 0x50, 0xa8 + layer * 3);
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x51);
if (rc < 0)
return rc;
*count |= rc << 8;
rc = mb86a20s_writereg(state, 0x50, 0xa9 + layer * 3);
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x51);
if (rc < 0)
return rc;
*count |= rc;
dev_dbg(&state->i2c->dev,
"%s: bit count before Viterbi for layer %c: %d.\n",
__func__, 'A' + layer, *count);
[media] mb86a20s: improve bit error count for BER Do a better job on setting the bit error counters, in order to have all layer measures to happen in a little less than one second. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-15 07:34:55 +08:00
/*
* As we get TMCC data from the frontend, we can better estimate the
* BER bit counters, in order to do the BER measure during a longer
* time. Use those data, if available, to update the bit count
* measure.
*/
if (state->estimated_rate[layer]
&& state->estimated_rate[layer] != *count) {
dev_dbg(&state->i2c->dev,
"%s: updating layer %c counter to %d.\n",
__func__, 'A' + layer, state->estimated_rate[layer]);
rc = mb86a20s_writereg(state, 0x50, 0xa7 + layer * 3);
if (rc < 0)
return rc;
rc = mb86a20s_writereg(state, 0x51,
state->estimated_rate[layer] >> 16);
if (rc < 0)
return rc;
rc = mb86a20s_writereg(state, 0x50, 0xa8 + layer * 3);
if (rc < 0)
return rc;
rc = mb86a20s_writereg(state, 0x51,
state->estimated_rate[layer] >> 8);
if (rc < 0)
return rc;
rc = mb86a20s_writereg(state, 0x50, 0xa9 + layer * 3);
if (rc < 0)
return rc;
rc = mb86a20s_writereg(state, 0x51,
state->estimated_rate[layer]);
if (rc < 0)
return rc;
}
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
/* Reset counter to collect new data */
rc = mb86a20s_writereg(state, 0x53, 0x07 & ~(1 << layer));
if (rc < 0)
return rc;
rc = mb86a20s_writereg(state, 0x53, 0x07);
return 0;
}
[media] mb86a20s: add CNR measurement Add Signal/Noise ratio measurement. On this device, a global measure is taken by the demod. It also provides per-layer CNR measurements, based on Modulation Error measures (MER). Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-17 02:12:05 +08:00
struct linear_segments {
unsigned x, y;
};
/*
* All tables below return a dB/1000 measurement
*/
static struct linear_segments cnr_to_db_table[] = {
{ 19648, 0},
{ 18187, 1000},
{ 16534, 2000},
{ 14823, 3000},
{ 13161, 4000},
{ 11622, 5000},
{ 10279, 6000},
{ 9089, 7000},
{ 8042, 8000},
{ 7137, 9000},
{ 6342, 10000},
{ 5641, 11000},
{ 5030, 12000},
{ 4474, 13000},
{ 3988, 14000},
{ 3556, 15000},
{ 3180, 16000},
{ 2841, 17000},
{ 2541, 18000},
{ 2276, 19000},
{ 2038, 20000},
{ 1800, 21000},
{ 1625, 22000},
{ 1462, 23000},
{ 1324, 24000},
{ 1175, 25000},
{ 1063, 26000},
{ 980, 27000},
{ 907, 28000},
{ 840, 29000},
{ 788, 30000},
};
static struct linear_segments cnr_64qam_table[] = {
{ 3922688, 0},
{ 3920384, 1000},
{ 3902720, 2000},
{ 3894784, 3000},
{ 3882496, 4000},
{ 3872768, 5000},
{ 3858944, 6000},
{ 3851520, 7000},
{ 3838976, 8000},
{ 3829248, 9000},
{ 3818240, 10000},
{ 3806976, 11000},
{ 3791872, 12000},
{ 3767040, 13000},
{ 3720960, 14000},
{ 3637504, 15000},
{ 3498496, 16000},
{ 3296000, 17000},
{ 3031040, 18000},
{ 2715392, 19000},
{ 2362624, 20000},
{ 1963264, 21000},
{ 1649664, 22000},
{ 1366784, 23000},
{ 1120768, 24000},
{ 890880, 25000},
{ 723456, 26000},
{ 612096, 27000},
{ 518912, 28000},
{ 448256, 29000},
{ 388864, 30000},
};
static struct linear_segments cnr_16qam_table[] = {
{ 5314816, 0},
{ 5219072, 1000},
{ 5118720, 2000},
{ 4998912, 3000},
{ 4875520, 4000},
{ 4736000, 5000},
{ 4604160, 6000},
{ 4458752, 7000},
{ 4300288, 8000},
{ 4092928, 9000},
{ 3836160, 10000},
{ 3521024, 11000},
{ 3155968, 12000},
{ 2756864, 13000},
{ 2347008, 14000},
{ 1955072, 15000},
{ 1593600, 16000},
{ 1297920, 17000},
{ 1043968, 18000},
{ 839680, 19000},
{ 672256, 20000},
{ 523008, 21000},
{ 424704, 22000},
{ 345088, 23000},
{ 280064, 24000},
{ 221440, 25000},
{ 179712, 26000},
{ 151040, 27000},
{ 128512, 28000},
{ 110080, 29000},
{ 95744, 30000},
};
struct linear_segments cnr_qpsk_table[] = {
{ 2834176, 0},
{ 2683648, 1000},
{ 2536960, 2000},
{ 2391808, 3000},
{ 2133248, 4000},
{ 1906176, 5000},
{ 1666560, 6000},
{ 1422080, 7000},
{ 1189632, 8000},
{ 976384, 9000},
{ 790272, 10000},
{ 633344, 11000},
{ 505600, 12000},
{ 402944, 13000},
{ 320768, 14000},
{ 255488, 15000},
{ 204032, 16000},
{ 163072, 17000},
{ 130304, 18000},
{ 105216, 19000},
{ 83456, 20000},
{ 65024, 21000},
{ 52480, 22000},
{ 42752, 23000},
{ 34560, 24000},
{ 27136, 25000},
{ 22016, 26000},
{ 18432, 27000},
{ 15616, 28000},
{ 13312, 29000},
{ 11520, 30000},
};
static u32 interpolate_value(u32 value, struct linear_segments *segments,
unsigned len)
{
u64 tmp64;
u32 dx, dy;
int i, ret;
if (value >= segments[0].x)
return segments[0].y;
if (value < segments[len-1].x)
return segments[len-1].y;
for (i = 1; i < len - 1; i++) {
/* If value is identical, no need to interpolate */
if (value == segments[i].x)
return segments[i].y;
if (value > segments[i].x)
break;
}
/* Linear interpolation between the two (x,y) points */
dy = segments[i].y - segments[i - 1].y;
dx = segments[i - 1].x - segments[i].x;
tmp64 = value - segments[i].x;
tmp64 *= dy;
do_div(tmp64, dx);
ret = segments[i].y - tmp64;
return ret;
}
static int mb86a20s_get_main_CNR(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
u32 cnr_linear, cnr;
int rc, val;
/* Check if CNR is available */
rc = mb86a20s_readreg(state, 0x45);
if (rc < 0)
return rc;
if (!(rc & 0x40)) {
dev_info(&state->i2c->dev, "%s: CNR is not available yet.\n",
__func__);
return -EBUSY;
}
val = rc;
rc = mb86a20s_readreg(state, 0x46);
if (rc < 0)
return rc;
cnr_linear = rc << 8;
rc = mb86a20s_readreg(state, 0x46);
if (rc < 0)
return rc;
cnr_linear |= rc;
cnr = interpolate_value(cnr_linear,
cnr_to_db_table, ARRAY_SIZE(cnr_to_db_table));
c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
c->cnr.stat[0].svalue = cnr;
dev_dbg(&state->i2c->dev, "%s: CNR is %d.%03d dB (%d)\n",
__func__, cnr / 1000, cnr % 1000, cnr_linear);
/* CNR counter reset */
rc = mb86a20s_writereg(state, 0x45, val | 0x10);
if (rc < 0)
return rc;
rc = mb86a20s_writereg(state, 0x45, val & 0x6f);
return rc;
}
static int mb86a20s_get_per_layer_CNR(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
u32 mer, cnr;
int rc, val, i;
struct linear_segments *segs;
unsigned segs_len;
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
/* Check if the measures are already available */
rc = mb86a20s_writereg(state, 0x50, 0x5b);
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x51);
if (rc < 0)
return rc;
/* Check if data is available */
if (!(rc & 0x01)) {
dev_info(&state->i2c->dev,
"%s: MER measures aren't available yet.\n", __func__);
return -EBUSY;
}
/* Read all layers */
for (i = 0; i < 3; i++) {
if (!(c->isdbt_layer_enabled & (1 << i))) {
c->cnr.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE;
continue;
}
rc = mb86a20s_writereg(state, 0x50, 0x52 + i * 3);
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x51);
if (rc < 0)
return rc;
mer = rc << 16;
rc = mb86a20s_writereg(state, 0x50, 0x53 + i * 3);
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x51);
if (rc < 0)
return rc;
mer |= rc << 8;
rc = mb86a20s_writereg(state, 0x50, 0x54 + i * 3);
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x51);
if (rc < 0)
return rc;
mer |= rc;
switch (c->layer[i].modulation) {
case DQPSK:
case QPSK:
segs = cnr_qpsk_table;
segs_len = ARRAY_SIZE(cnr_qpsk_table);
break;
case QAM_16:
segs = cnr_16qam_table;
segs_len = ARRAY_SIZE(cnr_16qam_table);
break;
default:
case QAM_64:
segs = cnr_64qam_table;
segs_len = ARRAY_SIZE(cnr_64qam_table);
break;
}
cnr = interpolate_value(mer, segs, segs_len);
c->cnr.stat[1 + i].scale = FE_SCALE_DECIBEL;
c->cnr.stat[1 + i].svalue = cnr;
dev_dbg(&state->i2c->dev,
"%s: CNR for layer %c is %d.%03d dB (MER = %d).\n",
__func__, 'A' + i, cnr / 1000, cnr % 1000, mer);
}
/* Start a new MER measurement */
/* MER counter reset */
rc = mb86a20s_writereg(state, 0x50, 0x50);
if (rc < 0)
return rc;
rc = mb86a20s_readreg(state, 0x51);
if (rc < 0)
return rc;
val = rc;
rc = mb86a20s_writereg(state, 0x51, val | 0x01);
if (rc < 0)
return rc;
rc = mb86a20s_writereg(state, 0x51, val & 0x06);
if (rc < 0)
return rc;
return 0;
}
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
static void mb86a20s_stats_not_ready(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int i;
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
[media] mb86a20s: improve error handling at get_frontend The read/write errors are not handled well on get_frontend. Fix it, by letting the frontend cached values to represent the DVB properties that were successfully retrieved. While here, use "c" for dtv_frontend_properties cache, instead of "p", as this is more common. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-14 20:26:09 +08:00
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
/* Fill the length of each status counter */
/* Only global stats */
c->strength.len = 1;
/* Per-layer stats - 3 layers + global */
c->cnr.len = 4;
c->pre_bit_error.len = 4;
c->pre_bit_count.len = 4;
c->block_error.len = 4;
c->block_count.len = 4;
/* Signal is always available */
c->strength.stat[0].scale = FE_SCALE_RELATIVE;
c->strength.stat[0].uvalue = 0;
/* Put all of them at FE_SCALE_NOT_AVAILABLE */
for (i = 0; i < 4; i++) {
c->cnr.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
c->pre_bit_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
c->pre_bit_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
c->block_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
c->block_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
}
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
}
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
static int mb86a20s_get_stats(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int rc = 0, i;
u32 bit_error = 0, bit_count = 0;
u32 t_pre_bit_error = 0, t_pre_bit_count = 0;
int active_layers = 0, ber_layers = 0;
[media] mb86a20s: add CNR measurement Add Signal/Noise ratio measurement. On this device, a global measure is taken by the demod. It also provides per-layer CNR measurements, based on Modulation Error measures (MER). Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-17 02:12:05 +08:00
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
mb86a20s_get_main_CNR(fe);
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
/* Get per-layer stats */
[media] mb86a20s: add CNR measurement Add Signal/Noise ratio measurement. On this device, a global measure is taken by the demod. It also provides per-layer CNR measurements, based on Modulation Error measures (MER). Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-17 02:12:05 +08:00
mb86a20s_get_per_layer_CNR(fe);
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
for (i = 0; i < 3; i++) {
if (c->isdbt_layer_enabled & (1 << i)) {
/* Layer is active and has rc segments */
active_layers++;
/* Read per-layer BER */
/* Handle BER before vterbi */
rc = mb86a20s_get_ber_before_vterbi(fe, i,
&bit_error,
&bit_count);
if (rc >= 0) {
c->pre_bit_error.stat[1 + i].scale = FE_SCALE_COUNTER;
c->pre_bit_error.stat[1 + i].uvalue += bit_error;
c->pre_bit_count.stat[1 + i].scale = FE_SCALE_COUNTER;
c->pre_bit_count.stat[1 + i].uvalue += bit_count;
} else if (rc != -EBUSY) {
/*
* If an I/O error happened,
* measures are now unavailable
*/
c->pre_bit_error.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE;
c->pre_bit_count.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE;
dev_err(&state->i2c->dev,
"%s: Can't get BER for layer %c (error %d).\n",
__func__, 'A' + i, rc);
}
if (c->block_error.stat[1 + i].scale != FE_SCALE_NOT_AVAILABLE)
ber_layers++;
/* Update total BER */
t_pre_bit_error += c->pre_bit_error.stat[1 + i].uvalue;
t_pre_bit_count += c->pre_bit_count.stat[1 + i].uvalue;
}
}
/*
* Start showing global count if at least one error count is
* available.
*/
if (ber_layers) {
/*
* At least one per-layer BER measure was read. We can now
* calculate the total BER
*
* Total Bit Error/Count is calculated as the sum of the
* bit errors on all active layers.
*/
c->pre_bit_error.stat[0].scale = FE_SCALE_COUNTER;
c->pre_bit_error.stat[0].uvalue = t_pre_bit_error;
c->pre_bit_count.stat[0].scale = FE_SCALE_COUNTER;
c->pre_bit_count.stat[0].uvalue = t_pre_bit_count;
}
return rc;
}
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
/*
* The functions below are called via DVB callbacks, so they need to
* properly use the I2C gate control
*/
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
static int mb86a20s_initfe(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
int rc;
u8 regD5 = 1;
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
/* Initialize the frontend */
rc = mb86a20s_writeregdata(state, mb86a20s_init);
if (rc < 0)
goto err;
if (!state->config->is_serial) {
regD5 &= ~1;
rc = mb86a20s_writereg(state, 0x50, 0xd5);
if (rc < 0)
goto err;
rc = mb86a20s_writereg(state, 0x51, regD5);
if (rc < 0)
goto err;
}
err:
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
if (rc < 0) {
state->need_init = true;
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_info(&state->i2c->dev,
"mb86a20s: Init failed. Will try again later\n");
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
} else {
state->need_init = false;
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_dbg(&state->i2c->dev, "Initialization succeeded.\n");
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
}
return rc;
}
static int mb86a20s_set_frontend(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
int rc;
#if 0
/*
* FIXME: Properly implement the set frontend properties
*/
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
#endif
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
/*
* Gate should already be opened, but it doesn't hurt to
* double-check
*/
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
fe->ops.tuner_ops.set_params(fe);
/*
* Make it more reliable: if, for some reason, the initial
* device initialization doesn't happen, initialize it when
* a SBTVD parameters are adjusted.
*
* Unfortunately, due to a hard to track bug at tda829x/tda18271,
* the agc callback logic is not called during DVB attach time,
* causing mb86a20s to not be initialized with Kworld SBTVD.
* So, this hack is needed, in order to make Kworld SBTVD to work.
*/
if (state->need_init)
mb86a20s_initfe(fe);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
[media] mb86a20s: improve bit error count for BER Do a better job on setting the bit error counters, in order to have all layer measures to happen in a little less than one second. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-15 07:34:55 +08:00
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
rc = mb86a20s_writeregdata(state, mb86a20s_reset_reception);
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
mb86a20s_reset_counters(fe);
[media] mb86a20s: improve bit error count for BER Do a better job on setting the bit error counters, in order to have all layer measures to happen in a little less than one second. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-15 07:34:55 +08:00
[media] mb86a20s: Function reorder Reorder functions to have everything related to stats/status read close. That will make the file more organized as other stats routines will be added. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:53:11 +08:00
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
return rc;
}
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
static int mb86a20s_read_status_and_stats(struct dvb_frontend *fe,
fe_status_t *status)
[media] mb86a20s: Split status read logic from DVB callback Split the logic that reads the status from the DVB callback. That helps to properly return an error code, if status read fails. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:49:39 +08:00
{
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
struct mb86a20s_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int rc;
[media] mb86a20s: Split status read logic from DVB callback Split the logic that reads the status from the DVB callback. That helps to properly return an error code, if status read fails. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:49:39 +08:00
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
[media] mb86a20s: Split status read logic from DVB callback Split the logic that reads the status from the DVB callback. That helps to properly return an error code, if status read fails. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:49:39 +08:00
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
/* Get lock */
rc = mb86a20s_read_status(fe, status);
if (!(*status & FE_HAS_LOCK)) {
mb86a20s_stats_not_ready(fe);
mb86a20s_reset_frontend_cache(fe);
}
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
if (rc < 0) {
dev_err(&state->i2c->dev,
"%s: Can't read frontend lock status\n", __func__);
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
goto error;
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
}
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
/* Get signal strength */
rc = mb86a20s_read_signal_strength(fe);
if (rc < 0) {
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
dev_err(&state->i2c->dev,
"%s: Can't reset VBER registers.\n", __func__);
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
mb86a20s_stats_not_ready(fe);
mb86a20s_reset_frontend_cache(fe);
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
rc = 0; /* Status is OK */
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
goto error;
}
/* Fill signal strength */
c->strength.stat[0].uvalue = rc;
if (*status & FE_HAS_LOCK) {
/* Get TMCC info*/
rc = mb86a20s_get_frontend(fe);
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
if (rc < 0) {
dev_err(&state->i2c->dev,
"%s: Can't get FE TMCC data.\n", __func__);
rc = 0; /* Status is OK */
goto error;
}
/* Get statistics */
rc = mb86a20s_get_stats(fe);
if (rc < 0 && rc != -EBUSY) {
dev_err(&state->i2c->dev,
"%s: Can't get FE statistics.\n", __func__);
rc = 0;
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
goto error;
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
}
rc = 0; /* Don't return EBUSY to userspace */
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
}
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
goto ok;
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
error:
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
mb86a20s_stats_not_ready(fe);
[media] mb86a20s: Split status read logic from DVB callback Split the logic that reads the status from the DVB callback. That helps to properly return an error code, if status read fails. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:49:39 +08:00
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
ok:
[media] mb86a20s: Split status read logic from DVB callback Split the logic that reads the status from the DVB callback. That helps to properly return an error code, if status read fails. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:49:39 +08:00
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
[media] mb86a20s: add BER measurement Add the methods to read bit error/bit count measurements from mb86a20s. On ISDB-T devices, those reads are done per layer. However, as userspace applications may not be aware of that, add a global measure that will sum the bit errors and bit counts for each layer, storing them into a global value. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:30:07 +08:00
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
return rc;
}
static int mb86a20s_read_signal_strength_from_cache(struct dvb_frontend *fe,
u16 *strength)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
*strength = c->strength.stat[0].uvalue;
[media] mb86a20s: Split status read logic from DVB callback Split the logic that reads the status from the DVB callback. That helps to properly return an error code, if status read fails. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:49:39 +08:00
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
return 0;
[media] mb86a20s: Split status read logic from DVB callback Split the logic that reads the status from the DVB callback. That helps to properly return an error code, if status read fails. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 18:49:39 +08:00
}
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
static int mb86a20s_get_frontend_dummy(struct dvb_frontend *fe)
{
/*
* get_frontend is now handled together with other stats
* retrival, when read_status() is called, as some statistics
* will depend on the layers detection.
*/
return 0;
};
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
static int mb86a20s_tune(struct dvb_frontend *fe,
[media] dvb-core: Don't pass DVBv3 parameters on tune() fops As all parameters are passed via DVBv5 to the frontends, there's no need to pass them again via fops. Also, most drivers weren't using it anyway. So, instead, just pass a parameter to indicate if the hardware algorithm wants the driver to re-tune or not. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-12-27 04:48:33 +08:00
bool re_tune,
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
unsigned int mode_flags,
unsigned int *delay,
fe_status_t *status)
{
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
struct mb86a20s_state *state = fe->demodulator_priv;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
int rc = 0;
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
[media] dvb-core: Don't pass DVBv3 parameters on tune() fops As all parameters are passed via DVBv5 to the frontends, there's no need to pass them again via fops. Also, most drivers weren't using it anyway. So, instead, just pass a parameter to indicate if the hardware algorithm wants the driver to re-tune or not. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-12-27 04:48:33 +08:00
if (re_tune)
[media] mb86a20s: convert set_fontend to use DVBv5 parameters Instead of using dvb_frontend_parameters struct, that were designed for a subset of the supported standards, use the DVBv5 cache information. Actually, this driver needs to fill/use the ISDB-T proprieties. Also, fill the supported delivery systems at dvb_frontend_ops struct. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-12-26 23:11:51 +08:00
rc = mb86a20s_set_frontend(fe);
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
if (!(mode_flags & FE_TUNE_MODE_ONESHOT))
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
mb86a20s_read_status_and_stats(fe, status);
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
return rc;
}
static void mb86a20s_release(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
kfree(state);
}
static struct dvb_frontend_ops mb86a20s_ops;
struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
struct i2c_adapter *i2c)
{
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
struct mb86a20s_state *state;
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
u8 rev;
[media] mb86a20s: don't use state before initializing it As reported by Feng's kbuild test: From: kbuild test robot <fengguang.wu@intel.com> Subject: drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: potential null dereference 'state'. (kzalloc returns null) Date: Wed, 23 Jan 2013 19:30:43 +0800 commit: f66d81b54dac26d4e601d4d7faca53f3bdc98427 [media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: potential null dereference 'state'. (kzalloc returns null) drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: we previously assumed 'state' could be null (see line 705) As, at mb86a20s_attach(), we have an i2c pointer, use it for all printk messages there, instead of state->i2c. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-23 23:22:22 +08:00
dev_dbg(&i2c->dev, "%s called.\n", __func__);
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
/* allocate memory for the internal state */
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
state = kzalloc(sizeof(struct mb86a20s_state), GFP_KERNEL);
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
if (state == NULL) {
[media] mb86a20s: don't use state before initializing it As reported by Feng's kbuild test: From: kbuild test robot <fengguang.wu@intel.com> Subject: drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: potential null dereference 'state'. (kzalloc returns null) Date: Wed, 23 Jan 2013 19:30:43 +0800 commit: f66d81b54dac26d4e601d4d7faca53f3bdc98427 [media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: potential null dereference 'state'. (kzalloc returns null) drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: we previously assumed 'state' could be null (see line 705) As, at mb86a20s_attach(), we have an i2c pointer, use it for all printk messages there, instead of state->i2c. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-23 23:22:22 +08:00
dev_err(&i2c->dev,
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
"%s: unable to allocate memory for state\n", __func__);
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
goto error;
}
/* setup the state */
state->config = config;
state->i2c = i2c;
/* create dvb_frontend */
memcpy(&state->frontend.ops, &mb86a20s_ops,
sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
/* Check if it is a mb86a20s frontend */
rev = mb86a20s_readreg(state, 0);
if (rev == 0x13) {
[media] mb86a20s: don't use state before initializing it As reported by Feng's kbuild test: From: kbuild test robot <fengguang.wu@intel.com> Subject: drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: potential null dereference 'state'. (kzalloc returns null) Date: Wed, 23 Jan 2013 19:30:43 +0800 commit: f66d81b54dac26d4e601d4d7faca53f3bdc98427 [media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: potential null dereference 'state'. (kzalloc returns null) drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: we previously assumed 'state' could be null (see line 705) As, at mb86a20s_attach(), we have an i2c pointer, use it for all printk messages there, instead of state->i2c. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-23 23:22:22 +08:00
dev_info(&i2c->dev,
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
"Detected a Fujitsu mb86a20s frontend\n");
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
} else {
[media] mb86a20s: don't use state before initializing it As reported by Feng's kbuild test: From: kbuild test robot <fengguang.wu@intel.com> Subject: drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: potential null dereference 'state'. (kzalloc returns null) Date: Wed, 23 Jan 2013 19:30:43 +0800 commit: f66d81b54dac26d4e601d4d7faca53f3bdc98427 [media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: potential null dereference 'state'. (kzalloc returns null) drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: we previously assumed 'state' could be null (see line 705) As, at mb86a20s_attach(), we have an i2c pointer, use it for all printk messages there, instead of state->i2c. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-23 23:22:22 +08:00
dev_dbg(&i2c->dev,
[media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg Instead of having its own set of macros, use the Kernel default ones for debug, error and info. While here, do some cleanup on the debug printk's. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 19:13:08 +08:00
"Frontend revision %d is unknown - aborting.\n",
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
rev);
goto error;
}
return &state->frontend;
error:
kfree(state);
return NULL;
}
EXPORT_SYMBOL(mb86a20s_attach);
static struct dvb_frontend_ops mb86a20s_ops = {
[media] mb86a20s: convert set_fontend to use DVBv5 parameters Instead of using dvb_frontend_parameters struct, that were designed for a subset of the supported standards, use the DVBv5 cache information. Actually, this driver needs to fill/use the ISDB-T proprieties. Also, fill the supported delivery systems at dvb_frontend_ops struct. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-12-26 23:11:51 +08:00
.delsys = { SYS_ISDBT },
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
/* Use dib8000 values per default */
.info = {
.name = "Fujitsu mb86A20s",
.caps = FE_CAN_INVERSION_AUTO | FE_CAN_RECOVER |
FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_QAM_AUTO |
FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO,
/* Actually, those values depend on the used tuner */
.frequency_min = 45000000,
.frequency_max = 864000000,
.frequency_stepsize = 62500,
},
.release = mb86a20s_release,
.init = mb86a20s_initfe,
[media] mb86a20s: convert set_fontend to use DVBv5 parameters Instead of using dvb_frontend_parameters struct, that were designed for a subset of the supported standards, use the DVBv5 cache information. Actually, this driver needs to fill/use the ISDB-T proprieties. Also, fill the supported delivery systems at dvb_frontend_ops struct. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-12-26 23:11:51 +08:00
.set_frontend = mb86a20s_set_frontend,
[media] mb86a20s: calculate statistics at .read_status() Instead of providing separate callbacks to read the several FE stats properties, the better seems to use just one method that will: - Read lock status; - Read signal strength; - if locked, get TMCC data; - if locked, get DVB statistics. As the DVB frontend thread will call this read_status callback on every 3 seconds, and userspace can even call it earlier, all stats data and layers layout will be updated together if available, with is a good thing. Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-22 23:28:31 +08:00
.get_frontend = mb86a20s_get_frontend_dummy,
.read_status = mb86a20s_read_status_and_stats,
.read_signal_strength = mb86a20s_read_signal_strength_from_cache,
[media] add a driver for mb86a20s This adds the trivial bits to mb86a20s. As the driver won't touch at the channel/layer parameters, this may not be enough for receiving all channels, especially ISDB-Tsb, but the driver worked properly for receiving video channels on my tests. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-28 07:52:43 +08:00
.tune = mb86a20s_tune,
};
MODULE_DESCRIPTION("DVB Frontend module for Fujitsu mb86A20s hardware");
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
MODULE_LICENSE("GPL");