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V4L/DVB (13173): adv7180: Support for getting input status

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This patch adds support to the ADV7180 driver to check the input
status.

Since the status is held in the same register as the input standard
a small restructuring of the code is done to reuse the code for
reading the register

Signed-off-by: Richard Röjfors <richard.rojfors@mocean-labs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Richard Röjfors 2009-09-22 06:05:42 -03:00 committed by Mauro Carvalho Chehab
parent e3c6e1aaa5
commit d31242943a
1 changed files with 54 additions and 12 deletions
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66
drivers/media/video/adv7180.c
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@ -30,14 +30,31 @@
#define DRIVER_NAME "adv7180"
#define ADV7180_INPUT_CONTROL_REG 0x00
#define ADV7180_INPUT_CONTROL_PAL_BG_NTSC_J_SECAM 0x00
#define ADV7180_INPUT_CONTROL_REG 0x00
#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM 0x00
#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM_PED 0x10
#define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_J_SECAM 0x20
#define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_M_SECAM 0x30
#define ADV7180_INPUT_CONTROL_NTSC_J 0x40
#define ADV7180_INPUT_CONTROL_NTSC_M 0x50
#define ADV7180_INPUT_CONTROL_PAL60 0x60
#define ADV7180_INPUT_CONTROL_NTSC_443 0x70
#define ADV7180_INPUT_CONTROL_PAL_BG 0x80
#define ADV7180_INPUT_CONTROL_PAL_N 0x90
#define ADV7180_INPUT_CONTROL_PAL_M 0xa0
#define ADV7180_INPUT_CONTROL_PAL_M_PED 0xb0
#define ADV7180_INPUT_CONTROL_PAL_COMB_N 0xc0
#define ADV7180_INPUT_CONTROL_PAL_COMB_N_PED 0xd0
#define ADV7180_INPUT_CONTROL_PAL_SECAM 0xe0
#define ADV7180_INPUT_CONTROL_PAL_SECAM_PED 0xf0
#define ADV7180_AUTODETECT_ENABLE_REG 0x07
#define ADV7180_AUTODETECT_DEFAULT 0x7f
#define ADV7180_STATUS1_REG 0x10
#define ADV7180_STATUS1_AUTOD_MASK 0x70
#define ADV7180_STATUS1_REG 0x10
#define ADV7180_STATUS1_IN_LOCK 0x01
#define ADV7180_STATUS1_AUTOD_MASK 0x70
#define ADV7180_STATUS1_AUTOD_NTSM_M_J 0x00
#define ADV7180_STATUS1_AUTOD_NTSC_4_43 0x10
#define ADV7180_STATUS1_AUTOD_PAL_M 0x20
@ -55,13 +72,11 @@ struct adv7180_state {
struct v4l2_subdev sd;
};
static v4l2_std_id determine_norm(struct i2c_client *client)
static v4l2_std_id adv7180_std_to_v4l2(u8 status1)
{
u8 status1 = i2c_smbus_read_byte_data(client, ADV7180_STATUS1_REG);
switch (status1 & ADV7180_STATUS1_AUTOD_MASK) {
case ADV7180_STATUS1_AUTOD_NTSM_M_J:
return V4L2_STD_NTSC_M_JP;
return V4L2_STD_NTSC;
case ADV7180_STATUS1_AUTOD_NTSC_4_43:
return V4L2_STD_NTSC_443;
case ADV7180_STATUS1_AUTOD_PAL_M:
@ -81,6 +96,30 @@ static v4l2_std_id determine_norm(struct i2c_client *client)
}
}
static u32 adv7180_status_to_v4l2(u8 status1)
{
if (!(status1 & ADV7180_STATUS1_IN_LOCK))
return V4L2_IN_ST_NO_SIGNAL;
return 0;
}
static int __adv7180_status(struct i2c_client *client, u32 *status,
v4l2_std_id *std)
{
int status1 = i2c_smbus_read_byte_data(client, ADV7180_STATUS1_REG);
if (status1 < 0)
return status1;
if (status)
*status = adv7180_status_to_v4l2(status1);
if (std)
*std = adv7180_std_to_v4l2(status1);
return 0;
}
static inline struct adv7180_state *to_state(struct v4l2_subdev *sd)
{
return container_of(sd, struct adv7180_state, sd);
@ -88,10 +127,12 @@ static inline struct adv7180_state *to_state(struct v4l2_subdev *sd)
static int adv7180_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return __adv7180_status(v4l2_get_subdevdata(sd), NULL, std);
}
*std = determine_norm(client);
return 0;
static int adv7180_g_input_status(struct v4l2_subdev *sd, u32 *status)
{
return __adv7180_status(v4l2_get_subdevdata(sd), status, NULL);
}
static int adv7180_g_chip_ident(struct v4l2_subdev *sd,
@ -104,6 +145,7 @@ static int adv7180_g_chip_ident(struct v4l2_subdev *sd,
static const struct v4l2_subdev_video_ops adv7180_video_ops = {
.querystd = adv7180_querystd,
.g_input_status = adv7180_g_input_status,
};
static const struct v4l2_subdev_core_ops adv7180_core_ops = {
@ -143,7 +185,7 @@ static int adv7180_probe(struct i2c_client *client,
/* Initialize adv7180 */
/* enable autodetection */
ret = i2c_smbus_write_byte_data(client, ADV7180_INPUT_CONTROL_REG,
ADV7180_INPUT_CONTROL_PAL_BG_NTSC_J_SECAM);
ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM);
if (ret > 0)
ret = i2c_smbus_write_byte_data(client,
ADV7180_AUTODETECT_ENABLE_REG,