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Subject[PATCH 2/2] ths7303: enable THS7303 for HD modes
Date
From: Manjunath Hadli <manjunath.hadli@ti.com>

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>
---
drivers/media/video/ths7303.c | 107 ++++++++++++++++++++++++++++++++++------
1 files changed, 91 insertions(+), 16 deletions(-)
diff --git a/drivers/media/video/ths7303.c b/drivers/media/video/ths7303.c
index e5c0eed..d997583 100644
--- a/drivers/media/video/ths7303.c
+++ b/drivers/media/video/ths7303.c
@@ -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 +49,97 @@ 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;
}
+ /* 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)
+ goto out;

- 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 two chroma channels */
+ if (!disable)
+ temp |= input_bias_chroma;

+ err = i2c_smbus_write_byte_data(client, THS7303_CHANNEL_1, temp);
if (err)
- v4l2_err(sd, "write failed\n");
+ 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 +152,7 @@ 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 +182,7 @@ 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)
--
1.7.0.4


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