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V4L/DVB (11022): zoran/bt819: use new notify functionality. 

Bt819 needs the parent driver to drive a GPIO pin low and high in order to
reset its fifo. Use the new notify callback for this.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2009-03-08 17:04:38 -03:00 committed by Mauro Carvalho Chehab
parent 98ec633972
commit 1cd3c0fa92
6 changed files with 71 additions and 47 deletions
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14
drivers/media/video/bt819.c
View File

@ -32,13 +32,14 @@
#include <linux/types.h>
#include <linux/ioctl.h>
#include <linux/delay.h>
#include <asm/uaccess.h>
#include <linux/uaccess.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-i2c-drv.h>
#include <media/bt819.h>
MODULE_DESCRIPTION("Brooktree-819 video decoder driver");
MODULE_AUTHOR("Mike Bernson & Dave Perks");
@ -250,7 +251,11 @@ static int bt819_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std);
if (sd->v4l2_dev == NULL || sd->v4l2_dev->notify == NULL)
v4l2_err(sd, "no notify found!\n");
if (std & V4L2_STD_NTSC) {
v4l2_subdev_notify(sd, BT819_FIFO_RESET_LOW, 0);
bt819_setbit(decoder, 0x01, 0, 1);
bt819_setbit(decoder, 0x01, 1, 0);
bt819_setbit(decoder, 0x01, 5, 0);
@ -259,6 +264,7 @@ static int bt819_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
/* bt819_setbit(decoder, 0x1a, 5, 1); */
timing = &timing_data[1];
} else if (std & V4L2_STD_PAL) {
v4l2_subdev_notify(sd, BT819_FIFO_RESET_LOW, 0);
bt819_setbit(decoder, 0x01, 0, 1);
bt819_setbit(decoder, 0x01, 1, 1);
bt819_setbit(decoder, 0x01, 5, 1);
@ -283,6 +289,7 @@ static int bt819_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
bt819_write(decoder, 0x08, (timing->hscale >> 8) & 0xff);
bt819_write(decoder, 0x09, timing->hscale & 0xff);
decoder->norm = std;
v4l2_subdev_notify(sd, BT819_FIFO_RESET_HIGH, 0);
return 0;
}
@ -295,7 +302,11 @@ static int bt819_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *ro
if (route->input < 0 || route->input > 7)
return -EINVAL;
if (sd->v4l2_dev == NULL || sd->v4l2_dev->notify == NULL)
v4l2_err(sd, "no notify found!\n");
if (decoder->input != route->input) {
v4l2_subdev_notify(sd, BT819_FIFO_RESET_LOW, 0);
decoder->input = route->input;
/* select mode */
if (decoder->input == 0) {
@ -305,6 +316,7 @@ static int bt819_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *ro
bt819_setbit(decoder, 0x0b, 6, 1);
bt819_setbit(decoder, 0x1a, 1, 0);
}
v4l2_subdev_notify(sd, BT819_FIFO_RESET_HIGH, 0);
}
return 0;
}

20
drivers/media/video/zoran/zoran_card.c
View File

@ -39,7 +39,6 @@
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <linux/spinlock.h>
#include <linux/sem.h>
#include <linux/kmod.h>
@ -48,8 +47,9 @@
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <asm/io.h>
#include <linux/io.h>
#include <media/v4l2-common.h>
#include <media/bt819.h>
#include "videocodec.h"
#include "zoran.h"
@ -1196,6 +1196,19 @@ zoran_setup_videocodec (struct zoran *zr,
return m;
}
static int zoran_subdev_notify(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
struct zoran *zr = to_zoran(sd->v4l2_dev);
/* Bt819 needs to reset its FIFO buffer using #FRST pin and
LML33 card uses GPIO(7) for that. */
if (cmd == BT819_FIFO_RESET_LOW)
GPIO(zr, 7, 0);
else if (cmd == BT819_FIFO_RESET_HIGH)
GPIO(zr, 7, 1);
return 0;
}
/*
* Scan for a Buz card (actually for the PCI controller ZR36057),
* request the irq and map the io memory
@ -1226,6 +1239,7 @@ static int __devinit zoran_probe(struct pci_dev *pdev,
ZORAN_NAME, __func__);
return -ENOMEM;
}
zr->v4l2_dev.notify = zoran_subdev_notify;
if (v4l2_device_register(&pdev->dev, &zr->v4l2_dev))
goto zr_free_mem;
zr->pci_dev = pdev;

36
drivers/media/video/zoran/zoran_device.c
View File

@ -1584,8 +1584,8 @@ zoran_init_hardware (struct zoran *zr)
route.input = zr->card.input[zr->input].muxsel;
decoder_call(zr, core, init, 0);
decoder_s_std(zr, zr->norm);
decoder_s_routing(zr, &route);
decoder_call(zr, tuner, s_std, zr->norm);
decoder_call(zr, video, s_routing, &route);
encoder_call(zr, core, init, 0);
encoder_call(zr, video, s_std_output, zr->norm);
@ -1650,35 +1650,3 @@ zr36057_init_vfe (struct zoran *zr)
reg |= ZR36057_VDCR_Triton;
btwrite(reg, ZR36057_VDCR);
}
/*
* Interface to decoder and encoder chips using i2c bus
*/
int decoder_s_std(struct zoran *zr, v4l2_std_id std)
{
int res;
/* Bt819 needs to reset its FIFO buffer using #FRST pin and
LML33 card uses GPIO(7) for that. */
if (zr->card.type == LML33)
GPIO(zr, 7, 0);
res = decoder_call(zr, tuner, s_std, std);
if (zr->card.type == LML33)
GPIO(zr, 7, 1); /* Pull #FRST high. */
return res;
}
int decoder_s_routing(struct zoran *zr, struct v4l2_routing *route)
{
int res;
/* Bt819 needs to reset its FIFO buffer using #FRST pin and
LML33 card uses GPIO(7) for that. */
if (zr->card.type == LML33)
GPIO(zr, 7, 0);
res = decoder_call(zr, video, s_routing, route);
if (zr->card.type == LML33)
GPIO(zr, 7, 1); /* Pull #FRST high. */
return res;
}

3
drivers/media/video/zoran/zoran_device.h
View File

@ -92,7 +92,4 @@ extern int pass_through;
#define encoder_call(zr, o, f, args...) \
v4l2_subdev_call(zr->encoder, o, f, ##args)
int decoder_s_std(struct zoran *zr, v4l2_std_id std);
int decoder_s_routing(struct zoran *zr, struct v4l2_routing *route);
#endif /* __ZORAN_DEVICE_H__ */

12
drivers/media/video/zoran/zoran_driver.c
View File

@ -1449,7 +1449,7 @@ zoran_set_norm (struct zoran *zr,
v4l2_std_id std = 0;
decoder_call(zr, video, querystd, &std);
decoder_s_std(zr, std);
decoder_call(zr, tuner, s_std, std);
/* let changes come into effect */
ssleep(2);
@ -1461,7 +1461,7 @@ zoran_set_norm (struct zoran *zr,
"%s: %s - no norm detected\n",
ZR_DEVNAME(zr), __func__);
/* reset norm */
decoder_s_std(zr, zr->norm);
decoder_call(zr, tuner, s_std, zr->norm);
return -EIO;
}
@ -1480,7 +1480,7 @@ zoran_set_norm (struct zoran *zr,
if (on)
zr36057_overlay(zr, 0);
decoder_s_std(zr, norm);
decoder_call(zr, tuner, s_std, norm);
encoder_call(zr, video, s_std_output, norm);
if (on)
@ -1522,7 +1522,7 @@ zoran_set_input (struct zoran *zr,
route.input = zr->card.input[input].muxsel;
zr->input = input;
decoder_s_routing(zr, &route);
decoder_call(zr, video, s_routing, &route);
return 0;
}
@ -1775,7 +1775,7 @@ static long zoran_default(struct file *file, void *__fh, int cmd, void *arg)
goto gstat_unlock_and_return;
}
decoder_s_routing(zr, &route);
decoder_call(zr, video, s_routing, &route);
/* sleep 1 second */
ssleep(1);
@ -1786,7 +1786,7 @@ static long zoran_default(struct file *file, void *__fh, int cmd, void *arg)
/* restore previous input and norm */
route.input = zr->card.input[zr->input].muxsel;
decoder_s_routing(zr, &route);
decoder_call(zr, video, s_routing, &route);
gstat_unlock_and_return:
mutex_unlock(&zr->resource_lock);

33
include/media/bt819.h Normal file
View File

@ -0,0 +1,33 @@
/*
bt819.h - bt819 notifications
Copyright (C) 2009 Hans Verkuil (hverkuil@xs4all.nl)
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _BT819_H_
#define _BT819_H_
#include <linux/ioctl.h>
/* v4l2_device notifications. */
/* Needed to reset the FIFO buffer when changing the input
or the video standard. */
#define BT819_FIFO_RESET_LOW _IO('b', 0)
#define BT819_FIFO_RESET_HIGH _IO('b', 1)
#endif