diff options
Diffstat (limited to 'drivers/media/i2c/ths7303.c')
| -rw-r--r-- | drivers/media/i2c/ths7303.c | 106 |
1 files changed, 90 insertions, 16 deletions
diff --git a/drivers/media/i2c/ths7303.c b/drivers/media/i2c/ths7303.c index e5c0eedebc58..c31cc04fffd2 100644 --- a/drivers/media/i2c/ths7303.c +++ b/drivers/media/i2c/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 +49,96 @@ 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; } + /* 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 +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) |