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V4L/DVB (9970): em28xx: Allow get/set registers for debug on i2c slave chips

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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2008-12-22 20:58:41 -03:00
parent bc97430510
commit 14983d8163
1 changed files with 41 additions and 5 deletions
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44
drivers/media/video/em28xx/em28xx-video.c
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@ -39,6 +39,7 @@
#include "em28xx.h" #include "em28xx.h"
#include <media/v4l2-common.h> #include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h> #include <media/v4l2-ioctl.h>
#include <media/v4l2-chip-ident.h>
#include <media/msp3400.h> #include <media/msp3400.h>
#include <media/tuner.h> #include <media/tuner.h>
@ -1214,6 +1215,21 @@ static int em28xx_reg_len(int reg)
} }
} }
static int vidioc_g_chip_ident(struct file *file, void *priv,
struct v4l2_chip_ident *chip)
{
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
chip->ident = V4L2_IDENT_NONE;
chip->revision = 0;
em28xx_i2c_call_clients(dev, VIDIOC_G_CHIP_IDENT, chip);
return 0;
}
static int vidioc_g_register(struct file *file, void *priv, static int vidioc_g_register(struct file *file, void *priv,
struct v4l2_register *reg) struct v4l2_register *reg)
{ {
@ -1221,7 +1237,8 @@ static int vidioc_g_register(struct file *file, void *priv,
struct em28xx *dev = fh->dev; struct em28xx *dev = fh->dev;
int ret; int ret;
if (reg->match_type == V4L2_CHIP_MATCH_AC97) { switch (reg->match_type) {
case V4L2_CHIP_MATCH_AC97:
mutex_lock(&dev->lock); mutex_lock(&dev->lock);
ret = em28xx_read_ac97(dev, reg->reg); ret = em28xx_read_ac97(dev, reg->reg);
mutex_unlock(&dev->lock); mutex_unlock(&dev->lock);
@ -1230,11 +1247,18 @@ static int vidioc_g_register(struct file *file, void *priv,
reg->val = ret; reg->val = ret;
return 0; return 0;
} case V4L2_CHIP_MATCH_I2C_DRIVER:
em28xx_i2c_call_clients(dev, VIDIOC_DBG_G_REGISTER, reg);
return 0;
case V4L2_CHIP_MATCH_I2C_ADDR:
/* Not supported yet */
return -EINVAL;
default:
if (!v4l2_chip_match_host(reg->match_type, reg->match_chip)) if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
return -EINVAL; return -EINVAL;
}
/* Match host */
if (em28xx_reg_len(reg->reg) == 1) { if (em28xx_reg_len(reg->reg) == 1) {
mutex_lock(&dev->lock); mutex_lock(&dev->lock);
ret = em28xx_read_reg(dev, reg->reg); ret = em28xx_read_reg(dev, reg->reg);
@ -1267,14 +1291,25 @@ static int vidioc_s_register(struct file *file, void *priv,
__le64 buf; __le64 buf;
int rc; int rc;
if (reg->match_type == V4L2_CHIP_MATCH_AC97) { switch (reg->match_type) {
case V4L2_CHIP_MATCH_AC97:
mutex_lock(&dev->lock); mutex_lock(&dev->lock);
rc = em28xx_write_ac97(dev, reg->reg, reg->val); rc = em28xx_write_ac97(dev, reg->reg, reg->val);
mutex_unlock(&dev->lock); mutex_unlock(&dev->lock);
return rc; return rc;
case V4L2_CHIP_MATCH_I2C_DRIVER:
em28xx_i2c_call_clients(dev, VIDIOC_DBG_S_REGISTER, reg);
return 0;
case V4L2_CHIP_MATCH_I2C_ADDR:
/* Not supported yet */
return -EINVAL;
default:
if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
return -EINVAL;
} }
/* Match host */
buf = cpu_to_le64(reg->val); buf = cpu_to_le64(reg->val);
mutex_lock(&dev->lock); mutex_lock(&dev->lock);
@ -1927,6 +1962,7 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
#ifdef CONFIG_VIDEO_ADV_DEBUG #ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_register = vidioc_g_register, .vidioc_g_register = vidioc_g_register,
.vidioc_s_register = vidioc_s_register, .vidioc_s_register = vidioc_s_register,
.vidioc_g_chip_ident = vidioc_g_chip_ident,
#endif #endif
#ifdef CONFIG_VIDEO_V4L1_COMPAT #ifdef CONFIG_VIDEO_V4L1_COMPAT
.vidiocgmbuf = vidiocgmbuf, .vidiocgmbuf = vidiocgmbuf,