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[media] ths7303: enable THS7303 for HD modes

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add filter settings for high def modes like 1080i,
1080p,720p and others and implementing dv_timings.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Manjunath Hadli 2012-10-01 11:46:35 -03:00 committed by Mauro Carvalho Chehab
parent 368640827c
commit ad7dcb334a
1 changed files with 92 additions and 18 deletions
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110
drivers/media/i2c/ths7303.c
View file

@ -28,6 +28,18 @@
#include <media/v4l2-subdev.h>
#include <media/v4l2-chip-ident.h>
#define THS7303_CHANNEL_1 1
#define THS7303_CHANNEL_2 2
#define THS7303_CHANNEL_3 3
enum ths7303_filter_mode {
THS7303_FILTER_MODE_480I_576I,
THS7303_FILTER_MODE_480P_576P,
THS7303_FILTER_MODE_720P_1080I,
THS7303_FILTER_MODE_1080P,
THS7303_FILTER_MODE_DISABLE
};
MODULE_DESCRIPTION("TI THS7303 video amplifier driver");
MODULE_AUTHOR("Chaithrika U S");
MODULE_LICENSE("GPL");
@ -37,35 +49,96 @@ module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level 0-1");
/* following function is used to set ths7303 */
static int ths7303_setvalue(struct v4l2_subdev *sd, v4l2_std_id std)
int ths7303_setval(struct v4l2_subdev *sd, enum ths7303_filter_mode mode)
{
u8 input_bias_chroma = 3;
u8 input_bias_luma = 3;
int disable = 0;
int err = 0;
u8 val;
struct i2c_client *client;
u8 val = 0;
u8 temp;
client = v4l2_get_subdevdata(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
if (std & (V4L2_STD_ALL & ~V4L2_STD_SECAM)) {
val = 0x02;
v4l2_dbg(1, debug, sd, "setting value for SDTV format\n");
} else {
val = 0x00;
v4l2_dbg(1, debug, sd, "disabling all channels\n");
if (!client)
return -EINVAL;
switch (mode) {
case THS7303_FILTER_MODE_1080P:
val = (3 << 6);
val |= (3 << 3);
break;
case THS7303_FILTER_MODE_720P_1080I:
val = (2 << 6);
val |= (2 << 3);
break;
case THS7303_FILTER_MODE_480P_576P:
val = (1 << 6);
val |= (1 << 3);
break;
case THS7303_FILTER_MODE_480I_576I:
break;
case THS7303_FILTER_MODE_DISABLE:
pr_info("mode disabled\n");
/* disable all channels */
disable = 1;
default:
/* disable all channels */
disable = 1;
}
err |= i2c_smbus_write_byte_data(client, 0x01, val);
err |= i2c_smbus_write_byte_data(client, 0x02, val);
err |= i2c_smbus_write_byte_data(client, 0x03, val);
/* Setup channel 2 - Luma - Green */
temp = val;
if (!disable)
val |= input_bias_luma;
err = i2c_smbus_write_byte_data(client, THS7303_CHANNEL_2, val);
if (err)
v4l2_err(sd, "write failed\n");
goto out;
/* setup two chroma channels */
if (!disable)
temp |= input_bias_chroma;
err = i2c_smbus_write_byte_data(client, THS7303_CHANNEL_1, temp);
if (err)
goto out;
err = i2c_smbus_write_byte_data(client, THS7303_CHANNEL_3, temp);
if (err)
goto out;
return err;
out:
pr_info("write byte data failed\n");
return err;
}
static int ths7303_s_std_output(struct v4l2_subdev *sd, v4l2_std_id norm)
{
return ths7303_setvalue(sd, norm);
if (norm & (V4L2_STD_ALL & ~V4L2_STD_SECAM))
return ths7303_setval(sd, THS7303_FILTER_MODE_480I_576I);
else
return ths7303_setval(sd, THS7303_FILTER_MODE_DISABLE);
}
/* for setting filter for HD output */
static int ths7303_s_dv_timings(struct v4l2_subdev *sd,
struct v4l2_dv_timings *dv_timings)
{
u32 height = dv_timings->bt.height;
int interlaced = dv_timings->bt.interlaced;
int res = 0;
if (height == 1080 && !interlaced)
res = ths7303_setval(sd, THS7303_FILTER_MODE_1080P);
else if ((height == 720 && !interlaced) ||
(height == 1080 && interlaced))
res = ths7303_setval(sd, THS7303_FILTER_MODE_720P_1080I);
else if ((height == 480 || height == 576) && !interlaced)
res = ths7303_setval(sd, THS7303_FILTER_MODE_480P_576P);
else
/* disable all channels */
res = ths7303_setval(sd, THS7303_FILTER_MODE_DISABLE);
return res;
}
static int ths7303_g_chip_ident(struct v4l2_subdev *sd,
@ -78,6 +151,7 @@ static int ths7303_g_chip_ident(struct v4l2_subdev *sd,
static const struct v4l2_subdev_video_ops ths7303_video_ops = {
.s_std_output = ths7303_s_std_output,
.s_dv_timings = ths7303_s_dv_timings,
};
static const struct v4l2_subdev_core_ops ths7303_core_ops = {
@ -107,7 +181,7 @@ static int ths7303_probe(struct i2c_client *client,
v4l2_i2c_subdev_init(sd, client, &ths7303_ops);
return ths7303_setvalue(sd, std_id);
return ths7303_s_std_output(sd, std_id);
}
static int ths7303_remove(struct i2c_client *client)