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linux/drivers/media/video/cx88/cx88-input.c

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/*
*
* Device driver for GPIO attached remote control interfaces
* on Conexant 2388x based TV/DVB cards.
*
* Copyright (c) 2003 Pavel Machek
* Copyright (c) 2004 Gerd Knorr
* Copyright (c) 2004, 2005 Chris Pascoe
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/hrtimer.h>
#include <linux/input.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
#include "cx88.h"
#include <media/ir-common.h>
#define MODULE_NAME "cx88xx"
/* ---------------------------------------------------------------------- */
struct cx88_IR {
struct cx88_core *core;
struct input_dev *input;
struct ir_input_state ir;
struct ir_dev_props props;
int users;
char name[32];
char phys[32];
/* sample from gpio pin 16 */
u32 sampling;
u32 samples[16];
int scount;
unsigned long release;
/* poll external decoder */
int polling;
struct hrtimer timer;
u32 gpio_addr;
u32 last_gpio;
u32 mask_keycode;
u32 mask_keydown;
u32 mask_keyup;
};
static int ir_debug;
module_param(ir_debug, int, 0644); /* debug level [IR] */
MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
#define ir_dprintk(fmt, arg...) if (ir_debug) \
printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
/* ---------------------------------------------------------------------- */
static void cx88_ir_handle_key(struct cx88_IR *ir)
{
struct cx88_core *core = ir->core;
u32 gpio, data, auxgpio;
/* read gpio value */
gpio = cx_read(ir->gpio_addr);
switch (core->boardnr) {
case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
/* This board apparently uses a combination of 2 GPIO
to represent the keys. Additionally, the second GPIO
can be used for parity.
Example:
for key "5"
gpio = 0x758, auxgpio = 0xe5 or 0xf5
for key "Power"
gpio = 0x758, auxgpio = 0xed or 0xfd
*/
auxgpio = cx_read(MO_GP1_IO);
/* Take out the parity part */
gpio=(gpio & 0x7fd) + (auxgpio & 0xef);
break;
case CX88_BOARD_WINFAST_DTV1000:
case CX88_BOARD_WINFAST_DTV1800H:
case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900);
auxgpio = gpio;
break;
default:
auxgpio = gpio;
}
if (ir->polling) {
if (ir->last_gpio == auxgpio)
return;
ir->last_gpio = auxgpio;
}
/* extract data */
data = ir_extract_bits(gpio, ir->mask_keycode);
ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
gpio, data,
ir->polling ? "poll" : "irq",
(gpio & ir->mask_keydown) ? " down" : "",
(gpio & ir->mask_keyup) ? " up" : "");
if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
u32 gpio_key = cx_read(MO_GP0_IO);
data = (data << 4) | ((gpio_key & 0xf0) >> 4);
ir_input_keydown(ir->input, &ir->ir, data);
ir_input_nokey(ir->input, &ir->ir);
} else if (ir->mask_keydown) {
/* bit set on keydown */
if (gpio & ir->mask_keydown) {
ir_input_keydown(ir->input, &ir->ir, data);
} else {
ir_input_nokey(ir->input, &ir->ir);
}
} else if (ir->mask_keyup) {
/* bit cleared on keydown */
if (0 == (gpio & ir->mask_keyup)) {
ir_input_keydown(ir->input, &ir->ir, data);
} else {
ir_input_nokey(ir->input, &ir->ir);
}
} else {
/* can't distinguish keydown/up :-/ */
ir_input_keydown(ir->input, &ir->ir, data);
ir_input_nokey(ir->input, &ir->ir);
}
}
static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer)
{
unsigned long missed;
struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer);
cx88_ir_handle_key(ir);
missed = hrtimer_forward_now(&ir->timer,
ktime_set(0, ir->polling * 1000000));
if (missed > 1)
ir_dprintk("Missed ticks %ld\n", missed - 1);
return HRTIMER_RESTART;
}
static int __cx88_ir_start(void *priv)
{
struct cx88_core *core = priv;
struct cx88_IR *ir;
if (!core || !core->ir)
return -EINVAL;
ir = core->ir;
if (ir->polling) {
hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
ir->timer.function = cx88_ir_work;
hrtimer_start(&ir->timer,
ktime_set(0, ir->polling * 1000000),
HRTIMER_MODE_REL);
}
if (ir->sampling) {
core->pci_irqmask |= PCI_INT_IR_SMPINT;
cx_write(MO_DDS_IO, 0xa80a80); /* 4 kHz sample rate */
cx_write(MO_DDSCFG_IO, 0x5); /* enable */
}
return 0;
}
static void __cx88_ir_stop(void *priv)
{
struct cx88_core *core = priv;
struct cx88_IR *ir;
if (!core || !core->ir)
return;
ir = core->ir;
if (ir->sampling) {
cx_write(MO_DDSCFG_IO, 0x0);
core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
}
if (ir->polling)
hrtimer_cancel(&ir->timer);
}
int cx88_ir_start(struct cx88_core *core)
{
if (core->ir->users)
return __cx88_ir_start(core);
return 0;
}
void cx88_ir_stop(struct cx88_core *core)
{
if (core->ir->users)
__cx88_ir_stop(core);
}
static int cx88_ir_open(void *priv)
{
struct cx88_core *core = priv;
core->ir->users++;
return __cx88_ir_start(core);
}
static void cx88_ir_close(void *priv)
{
struct cx88_core *core = priv;
core->ir->users--;
if (!core->ir->users)
__cx88_ir_stop(core);
}
/* ---------------------------------------------------------------------- */
int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
{
struct cx88_IR *ir;
struct input_dev *input_dev;
char *ir_codes = NULL;
u64 ir_type = IR_TYPE_OTHER;
int err = -ENOMEM;
u32 hardware_mask = 0; /* For devices with a hardware mask, when
* used with a full-code IR table
*/
ir = kzalloc(sizeof(*ir), GFP_KERNEL);
input_dev = input_allocate_device();
if (!ir || !input_dev)
goto err_out_free;
ir->input = input_dev;
/* detect & configure */
switch (core->boardnr) {
case CX88_BOARD_DNTV_LIVE_DVB_T:
case CX88_BOARD_KWORLD_DVB_T:
case CX88_BOARD_KWORLD_DVB_T_CX22702:
ir_codes = RC_MAP_DNTV_LIVE_DVB_T;
ir->gpio_addr = MO_GP1_IO;
ir->mask_keycode = 0x1f;
ir->mask_keyup = 0x60;
ir->polling = 50; /* ms */
break;
case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
ir_codes = RC_MAP_CINERGY_1400;
ir_type = IR_TYPE_PD;
ir->sampling = 0xeb04; /* address */
break;
case CX88_BOARD_HAUPPAUGE:
case CX88_BOARD_HAUPPAUGE_DVB_T1:
case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
case CX88_BOARD_HAUPPAUGE_HVR1100:
case CX88_BOARD_HAUPPAUGE_HVR3000:
case CX88_BOARD_HAUPPAUGE_HVR4000:
case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
case CX88_BOARD_PCHDTV_HD3000:
case CX88_BOARD_PCHDTV_HD5500:
case CX88_BOARD_HAUPPAUGE_IRONLY:
ir_codes = RC_MAP_HAUPPAUGE_NEW;
ir_type = IR_TYPE_RC5;
ir->sampling = 1;
break;
case CX88_BOARD_WINFAST_DTV2000H:
case CX88_BOARD_WINFAST_DTV2000H_J:
case CX88_BOARD_WINFAST_DTV1800H:
ir_codes = RC_MAP_WINFAST;
ir->gpio_addr = MO_GP0_IO;
ir->mask_keycode = 0x8f8;
ir->mask_keyup = 0x100;
ir->polling = 50; /* ms */
break;
case CX88_BOARD_WINFAST2000XP_EXPERT:
case CX88_BOARD_WINFAST_DTV1000:
case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
ir_codes = RC_MAP_WINFAST;
ir->gpio_addr = MO_GP0_IO;
ir->mask_keycode = 0x8f8;
ir->mask_keyup = 0x100;
ir->polling = 1; /* ms */
break;
case CX88_BOARD_IODATA_GVBCTV7E:
ir_codes = RC_MAP_IODATA_BCTV7E;
ir->gpio_addr = MO_GP0_IO;
ir->mask_keycode = 0xfd;
ir->mask_keydown = 0x02;
ir->polling = 5; /* ms */
break;
case CX88_BOARD_PROLINK_PLAYTVPVR:
case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
/*
* It seems that this hardware is paired with NEC extended
* address 0x866b. So, unfortunately, its usage with other
* IR's with different address won't work. Still, there are
* other IR's from the same manufacturer that works, like the
* 002-T mini RC, provided with newer PV hardware
*/
ir_codes = RC_MAP_PIXELVIEW_MK12;
ir->gpio_addr = MO_GP1_IO;
ir->mask_keyup = 0x80;
ir->polling = 10; /* ms */
hardware_mask = 0x3f; /* Hardware returns only 6 bits from command part */
break;
case CX88_BOARD_PROLINK_PV_8000GT:
case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
ir_codes = RC_MAP_PIXELVIEW_NEW;
ir->gpio_addr = MO_GP1_IO;
ir->mask_keycode = 0x3f;
ir->mask_keyup = 0x80;
ir->polling = 1; /* ms */
break;
case CX88_BOARD_KWORLD_LTV883:
ir_codes = RC_MAP_PIXELVIEW;
ir->gpio_addr = MO_GP1_IO;
ir->mask_keycode = 0x1f;
ir->mask_keyup = 0x60;
ir->polling = 1; /* ms */
break;
case CX88_BOARD_ADSTECH_DVB_T_PCI:
ir_codes = RC_MAP_ADSTECH_DVB_T_PCI;
ir->gpio_addr = MO_GP1_IO;
ir->mask_keycode = 0xbf;
ir->mask_keyup = 0x40;
ir->polling = 50; /* ms */
break;
case CX88_BOARD_MSI_TVANYWHERE_MASTER:
ir_codes = RC_MAP_MSI_TVANYWHERE;
ir->gpio_addr = MO_GP1_IO;
ir->mask_keycode = 0x1f;
ir->mask_keyup = 0x40;
ir->polling = 1; /* ms */
break;
case CX88_BOARD_AVERTV_303:
case CX88_BOARD_AVERTV_STUDIO_303:
ir_codes = RC_MAP_AVERTV_303;
ir->gpio_addr = MO_GP2_IO;
ir->mask_keycode = 0xfb;
ir->mask_keydown = 0x02;
ir->polling = 50; /* ms */
break;
case CX88_BOARD_OMICOM_SS4_PCI:
case CX88_BOARD_SATTRADE_ST4200:
case CX88_BOARD_TBS_8920:
case CX88_BOARD_TBS_8910:
case CX88_BOARD_PROF_7300:
case CX88_BOARD_PROF_7301:
case CX88_BOARD_PROF_6200:
ir_codes = RC_MAP_TBS_NEC;
ir_type = IR_TYPE_PD;
ir->sampling = 0xff00; /* address */
break;
case CX88_BOARD_TEVII_S460:
case CX88_BOARD_TEVII_S420:
ir_codes = RC_MAP_TEVII_NEC;
ir_type = IR_TYPE_PD;
ir->sampling = 0xff00; /* address */
break;
case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
ir_codes = RC_MAP_DNTV_LIVE_DVBT_PRO;
ir_type = IR_TYPE_PD;
ir->sampling = 0xff00; /* address */
break;
case CX88_BOARD_NORWOOD_MICRO:
ir_codes = RC_MAP_NORWOOD;
ir->gpio_addr = MO_GP1_IO;
ir->mask_keycode = 0x0e;
ir->mask_keyup = 0x80;
ir->polling = 50; /* ms */
break;
case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
ir_codes = RC_MAP_NPGTECH;
ir->gpio_addr = MO_GP0_IO;
ir->mask_keycode = 0xfa;
ir->polling = 50; /* ms */
break;
case CX88_BOARD_PINNACLE_PCTV_HD_800i:
ir_codes = RC_MAP_PINNACLE_PCTV_HD;
ir_type = IR_TYPE_RC5;
ir->sampling = 1;
break;
case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
ir_codes = RC_MAP_POWERCOLOR_REAL_ANGEL;
ir->gpio_addr = MO_GP2_IO;
ir->mask_keycode = 0x7e;
ir->polling = 100; /* ms */
break;
}
if (NULL == ir_codes) {
err = -ENODEV;
goto err_out_free;
}
/*
* The usage of mask_keycode were very convenient, due to several
* reasons. Among others, the scancode tables were using the scancode
* as the index elements. So, the less bits it was used, the smaller
* the table were stored. After the input changes, the better is to use
* the full scancodes, since it allows replacing the IR remote by
* another one. Unfortunately, there are still some hardware, like
* Pixelview Ultra Pro, where only part of the scancode is sent via
* GPIO. So, there's no way to get the full scancode. Due to that,
* hardware_mask were introduced here: it represents those hardware
* that has such limits.
*/
if (hardware_mask && !ir->mask_keycode)
ir->mask_keycode = hardware_mask;
/* init input device */
snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
err = ir_input_init(input_dev, &ir->ir, ir_type);
if (err < 0)
goto err_out_free;
input_dev->name = ir->name;
input_dev->phys = ir->phys;
input_dev->id.bustype = BUS_PCI;
input_dev->id.version = 1;
if (pci->subsystem_vendor) {
input_dev->id.vendor = pci->subsystem_vendor;
input_dev->id.product = pci->subsystem_device;
} else {
input_dev->id.vendor = pci->vendor;
input_dev->id.product = pci->device;
}
input_dev->dev.parent = &pci->dev;
/* record handles to ourself */
ir->core = core;
core->ir = ir;
ir->props.priv = core;
ir->props.open = cx88_ir_open;
ir->props.close = cx88_ir_close;
ir->props.scanmask = hardware_mask;
/* all done */
err = ir_input_register(ir->input, ir_codes, &ir->props, MODULE_NAME);
if (err)
goto err_out_free;
return 0;
err_out_free:
core->ir = NULL;
kfree(ir);
return err;
}
int cx88_ir_fini(struct cx88_core *core)
{
struct cx88_IR *ir = core->ir;
/* skip detach on non attached boards */
if (NULL == ir)
return 0;
cx88_ir_stop(core);
ir_input_unregister(ir->input);
kfree(ir);
/* done */
core->ir = NULL;
return 0;
}
/* ---------------------------------------------------------------------- */
void cx88_ir_irq(struct cx88_core *core)
{
struct cx88_IR *ir = core->ir;
u32 samples, ircode;
int i, start, range, toggle, dev, code;
if (NULL == ir)
return;
if (!ir->sampling)
return;
samples = cx_read(MO_SAMPLE_IO);
if (0 != samples && 0xffffffff != samples) {
/* record sample data */
if (ir->scount < ARRAY_SIZE(ir->samples))
ir->samples[ir->scount++] = samples;
return;
}
if (!ir->scount) {
/* nothing to sample */
if (ir->ir.keypressed && time_after(jiffies, ir->release))
ir_input_nokey(ir->input, &ir->ir);
return;
}
/* have a complete sample */
if (ir->scount < ARRAY_SIZE(ir->samples))
ir->samples[ir->scount++] = samples;
for (i = 0; i < ir->scount; i++)
ir->samples[i] = ~ir->samples[i];
if (ir_debug)
ir_dump_samples(ir->samples, ir->scount);
/* decode it */
switch (core->boardnr) {
case CX88_BOARD_TEVII_S460:
case CX88_BOARD_TEVII_S420:
case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
case CX88_BOARD_OMICOM_SS4_PCI:
case CX88_BOARD_SATTRADE_ST4200:
case CX88_BOARD_TBS_8920:
case CX88_BOARD_TBS_8910:
case CX88_BOARD_PROF_7300:
case CX88_BOARD_PROF_7301:
case CX88_BOARD_PROF_6200:
ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4);
if (ircode == 0xffffffff) { /* decoding error */
ir_dprintk("pulse distance decoding error\n");
break;
}
ir_dprintk("pulse distance decoded: %x\n", ircode);
if (ircode == 0) { /* key still pressed */
ir_dprintk("pulse distance decoded repeat code\n");
ir->release = jiffies + msecs_to_jiffies(120);
break;
}
if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */
ir_dprintk("pulse distance decoded wrong address\n");
break;
}
if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */
ir_dprintk("pulse distance decoded wrong check sum\n");
break;
}
ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f);
ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f);
ir->release = jiffies + msecs_to_jiffies(120);
break;
case CX88_BOARD_HAUPPAUGE:
case CX88_BOARD_HAUPPAUGE_DVB_T1:
case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
case CX88_BOARD_HAUPPAUGE_HVR1100:
case CX88_BOARD_HAUPPAUGE_HVR3000:
case CX88_BOARD_HAUPPAUGE_HVR4000:
case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
case CX88_BOARD_PCHDTV_HD3000:
case CX88_BOARD_PCHDTV_HD5500:
case CX88_BOARD_HAUPPAUGE_IRONLY:
ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
ir_dprintk("biphase decoded: %x\n", ircode);
/*
* RC5 has an extension bit which adds a new range
* of available codes, this is detected here. Also
* hauppauge remotes (black/silver) always use
* specific device ids. If we do not filter the
* device ids then messages destined for devices
* such as TVs (id=0) will get through to the
* device causing mis-fired events.
*/
/* split rc5 data block ... */
start = (ircode & 0x2000) >> 13;
range = (ircode & 0x1000) >> 12;
toggle= (ircode & 0x0800) >> 11;
dev = (ircode & 0x07c0) >> 6;
code = (ircode & 0x003f) | ((range << 6) ^ 0x0040);
if( start != 1)
/* no key pressed */
break;
if ( dev != 0x1e && dev != 0x1f )
/* not a hauppauge remote */
break;
ir_input_keydown(ir->input, &ir->ir, code);
ir->release = jiffies + msecs_to_jiffies(120);
break;
case CX88_BOARD_PINNACLE_PCTV_HD_800i:
ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
ir_dprintk("biphase decoded: %x\n", ircode);
if ((ircode & 0xfffff000) != 0x3000)
break;
ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f);
ir->release = jiffies + msecs_to_jiffies(120);
break;
}
ir->scount = 0;
return;
}
/* ---------------------------------------------------------------------- */
MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
MODULE_LICENSE("GPL");
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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