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Date: Wed, 26 Sep 2012 10:57:29 +0200
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Prabhakar <prabhakar.csengg@...il.com>
Cc: LMML <linux-media@...r.kernel.org>,
DLOS <davinci-linux-open-source@...ux.davincidsp.com>,
Manjunath Hadli <manjunath.hadli@...com>,
Mauro Carvalho Chehab <mchehab@...radead.org>,
VGER <linux-kernel@...r.kernel.org>,
"Lad, Prabhakar" <prabhakar.lad@...com>,
Sakari Ailus <sakari.ailus@....fi>,
Paul Gortmaker <paul.gortmaker@...driver.com>,
Jean Delvare <khali@...ux-fr.org>
Subject: Re: [PATCH v2] media: mt9p031/mt9t001/mt9v032: use V4L2_CID_TEST_PATTERN for test pattern control
Hi Prabhakar,
Thanks for the patch.
On Wednesday 26 September 2012 12:05:10 Prabhakar wrote:
> From: Lad, Prabhakar <prabhakar.lad@...com>
>
> Signed-off-by: Lad, Prabhakar <prabhakar.lad@...com>
> Signed-off-by: Manjunath Hadli <manjunath.hadli@...com>
> Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> Cc: Sakari Ailus <sakari.ailus@....fi>
> Cc: Paul Gortmaker <paul.gortmaker@...driver.com>
> Cc: Jean Delvare <khali@...ux-fr.org>
> ---
> Changes for v2:
> 1: Fixed review comments pointed by Laurent.
>
> drivers/media/i2c/mt9p031.c | 19 +++++--------------
> drivers/media/i2c/mt9t001.c | 23 +++++++++++++++--------
> drivers/media/i2c/mt9v032.c | 34 ++++++++++++++++++++++++----------
> 3 files changed, 44 insertions(+), 32 deletions(-)
>
> diff --git a/drivers/media/i2c/mt9p031.c b/drivers/media/i2c/mt9p031.c
> index 2c0f407..e328332 100644
> --- a/drivers/media/i2c/mt9p031.c
> +++ b/drivers/media/i2c/mt9p031.c
> @@ -574,7 +574,6 @@ static int mt9p031_set_crop(struct v4l2_subdev *subdev,
> * V4L2 subdev control operations
> */
>
> -#define V4L2_CID_TEST_PATTERN (V4L2_CID_USER_BASE | 0x1001)
> #define V4L2_CID_BLC_AUTO (V4L2_CID_USER_BASE | 0x1002)
> #define V4L2_CID_BLC_TARGET_LEVEL (V4L2_CID_USER_BASE | 0x1003)
> #define V4L2_CID_BLC_ANALOG_OFFSET (V4L2_CID_USER_BASE | 0x1004)
> @@ -740,18 +739,6 @@ static const char * const mt9p031_test_pattern_menu[] =
> { static const struct v4l2_ctrl_config mt9p031_ctrls[] = {
> {
> .ops = &mt9p031_ctrl_ops,
> - .id = V4L2_CID_TEST_PATTERN,
> - .type = V4L2_CTRL_TYPE_MENU,
> - .name = "Test Pattern",
> - .min = 0,
> - .max = ARRAY_SIZE(mt9p031_test_pattern_menu) - 1,
> - .step = 0,
> - .def = 0,
> - .flags = 0,
> - .menu_skip_mask = 0,
> - .qmenu = mt9p031_test_pattern_menu,
> - }, {
> - .ops = &mt9p031_ctrl_ops,
> .id = V4L2_CID_BLC_AUTO,
> .type = V4L2_CTRL_TYPE_BOOLEAN,
> .name = "BLC, Auto",
> @@ -950,7 +937,7 @@ static int mt9p031_probe(struct i2c_client *client,
> mt9p031->model = did->driver_data;
> mt9p031->reset = -1;
>
> - v4l2_ctrl_handler_init(&mt9p031->ctrls, ARRAY_SIZE(mt9p031_ctrls) + 5);
> + v4l2_ctrl_handler_init(&mt9p031->ctrls, ARRAY_SIZE(mt9p031_ctrls) + 6);
>
> v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops,
> V4L2_CID_EXPOSURE, MT9P031_SHUTTER_WIDTH_MIN,
> @@ -966,6 +953,10 @@ static int mt9p031_probe(struct i2c_client *client,
> v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops,
> V4L2_CID_PIXEL_RATE, pdata->target_freq,
> pdata->target_freq, 1, pdata->target_freq);
> + v4l2_ctrl_new_std_menu_items(&mt9p031->ctrls, &mt9p031_ctrl_ops,
> + V4L2_CID_TEST_PATTERN,
> + ARRAY_SIZE(mt9p031_test_pattern_menu) - 1, 0,
> + 0, mt9p031_test_pattern_menu);
>
> for (i = 0; i < ARRAY_SIZE(mt9p031_ctrls); ++i)
> v4l2_ctrl_new_custom(&mt9p031->ctrls, &mt9p031_ctrls[i], NULL);
> diff --git a/drivers/media/i2c/mt9t001.c b/drivers/media/i2c/mt9t001.c
> index 6d343ad..23f4e0a 100644
> --- a/drivers/media/i2c/mt9t001.c
> +++ b/drivers/media/i2c/mt9t001.c
> @@ -371,7 +371,7 @@ static int mt9t001_set_crop(struct v4l2_subdev *subdev,
> * V4L2 subdev control operations
> */
>
> -#define V4L2_CID_TEST_PATTERN (V4L2_CID_USER_BASE | 0x1001)
> +#define V4L2_CID_TEST_PATTERN_COLOR (V4L2_CID_USER_BASE | 0x1001)
> #define V4L2_CID_BLACK_LEVEL_AUTO (V4L2_CID_USER_BASE | 0x1002)
> #define V4L2_CID_BLACK_LEVEL_OFFSET (V4L2_CID_USER_BASE | 0x1003)
> #define V4L2_CID_BLACK_LEVEL_CALIBRATE (V4L2_CID_USER_BASE | 0x1004)
> @@ -485,14 +485,12 @@ static int mt9t001_s_ctrl(struct v4l2_ctrl *ctrl)
>
> return mt9t001_write(client, MT9T001_SHUTTER_WIDTH_HIGH,
> ctrl->val >> 16);
> -
No need to remove the blank line here.
> case V4L2_CID_TEST_PATTERN:
> - ret = mt9t001_set_output_control(mt9t001,
> + return mt9t001_set_output_control(mt9t001,
> ctrl->val ? 0 : MT9T001_OUTPUT_CONTROL_TEST_DATA,
> ctrl->val ? MT9T001_OUTPUT_CONTROL_TEST_DATA : 0);
> - if (ret < 0)
> - return ret;
>
> + case V4L2_CID_TEST_PATTERN_COLOR:
> return mt9t001_write(client, MT9T001_TEST_DATA, ctrl->val << 2);
>
> case V4L2_CID_BLACK_LEVEL_AUTO:
> @@ -533,12 +531,17 @@ static struct v4l2_ctrl_ops mt9t001_ctrl_ops = {
> .s_ctrl = mt9t001_s_ctrl,
> };
>
> +static const char * const mt9t001_test_pattern_menu[] = {
> + "Disabled",
> + "Enabled",
> +};
> +
> static const struct v4l2_ctrl_config mt9t001_ctrls[] = {
> {
> .ops = &mt9t001_ctrl_ops,
> - .id = V4L2_CID_TEST_PATTERN,
> + .id = V4L2_CID_TEST_PATTERN_COLOR,
> .type = V4L2_CTRL_TYPE_INTEGER,
> - .name = "Test pattern",
> + .name = "Test Pattern Color",
> .min = 0,
> .max = 1023,
> .step = 1,
> @@ -741,7 +744,7 @@ static int mt9t001_probe(struct i2c_client *client,
> return -ENOMEM;
>
> v4l2_ctrl_handler_init(&mt9t001->ctrls, ARRAY_SIZE(mt9t001_ctrls) +
> - ARRAY_SIZE(mt9t001_gains) + 3);
> + ARRAY_SIZE(mt9t001_gains) + 4);
>
> v4l2_ctrl_new_std(&mt9t001->ctrls, &mt9t001_ctrl_ops,
> V4L2_CID_EXPOSURE, MT9T001_SHUTTER_WIDTH_MIN,
> @@ -752,6 +755,10 @@ static int mt9t001_probe(struct i2c_client *client,
> v4l2_ctrl_new_std(&mt9t001->ctrls, &mt9t001_ctrl_ops,
> V4L2_CID_PIXEL_RATE, pdata->ext_clk, pdata->ext_clk,
> 1, pdata->ext_clk);
> + v4l2_ctrl_new_std_menu_items(&mt9t001->ctrls, &mt9t001_ctrl_ops,
> + V4L2_CID_TEST_PATTERN,
> + ARRAY_SIZE(mt9t001_test_pattern_menu) - 1, 0,
> + 0, mt9t001_test_pattern_menu);
>
> for (i = 0; i < ARRAY_SIZE(mt9t001_ctrls); ++i)
> v4l2_ctrl_new_custom(&mt9t001->ctrls, &mt9t001_ctrls[i], NULL);
> diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c
> index e217740..988ecce 100644
> --- a/drivers/media/i2c/mt9v032.c
> +++ b/drivers/media/i2c/mt9v032.c
> @@ -500,7 +500,7 @@ static int mt9v032_set_crop(struct v4l2_subdev *subdev,
> * V4L2 subdev control operations
> */
>
> -#define V4L2_CID_TEST_PATTERN (V4L2_CID_USER_BASE | 0x1001)
> +#define V4L2_CID_TEST_PATTERN_COLOR (V4L2_CID_USER_BASE | 0x1001)
>
> static int mt9v032_s_ctrl(struct v4l2_ctrl *ctrl)
> {
> @@ -562,13 +562,15 @@ static int mt9v032_s_ctrl(struct v4l2_ctrl *ctrl)
>
> | MT9V032_TEST_PATTERN_ENABLE;
>
> break;
> default:
> - data = (ctrl->val << MT9V032_TEST_PATTERN_DATA_SHIFT)
> - | MT9V032_TEST_PATTERN_USE_DATA
> - | MT9V032_TEST_PATTERN_ENABLE
> - | MT9V032_TEST_PATTERN_FLIP;
> + data = MT9V032_TEST_PATTERN_USE_DATA |
> + MT9V032_TEST_PATTERN_ENABLE |
> + MT9V032_TEST_PATTERN_FLIP;
> break;
> }
> + return mt9v032_write(client, MT9V032_TEST_PATTERN, data);
>
> + case V4L2_CID_TEST_PATTERN_COLOR:
> + data = ctrl->val << MT9V032_TEST_PATTERN_DATA_SHIFT;
> return mt9v032_write(client, MT9V032_TEST_PATTERN, data);
This won't work. Setting the V4L2_CID_TEST_PATTERN_COLOR control will disable
the test pattern, and setting the V4L2_CID_TEST_PATTERN control will set the
color to 0. You should put the two controls in a cluster. You can have a look
at how the mt9m032 driver handles the horizontal and vertical flip controls
for sample code.
> }
>
> @@ -579,16 +581,24 @@ static struct v4l2_ctrl_ops mt9v032_ctrl_ops = {
> .s_ctrl = mt9v032_s_ctrl,
> };
>
> +static const char * const mt9v032_test_pattern_menu[] = {
> + "Disabled",
> + "Gray Vertical Shade",
> + "Gray Horizontal Shade",
> + "Gray Diagonal Shade",
> + "Plain",
> +};
> +
> static const struct v4l2_ctrl_config mt9v032_ctrls[] = {
> {
> .ops = &mt9v032_ctrl_ops,
> - .id = V4L2_CID_TEST_PATTERN,
> + .id = V4L2_CID_TEST_PATTERN_COLOR,
> .type = V4L2_CTRL_TYPE_INTEGER,
> - .name = "Test pattern",
> - .min = 0,
> + .name = "Test Pattern Color",
> + .min = 4,
> .max = 1023,
> .step = 1,
> - .def = 0,
> + .def = 4,
> .flags = 0,
> }
> };
> @@ -741,7 +751,7 @@ static int mt9v032_probe(struct i2c_client *client,
> mutex_init(&mt9v032->power_lock);
> mt9v032->pdata = pdata;
>
> - v4l2_ctrl_handler_init(&mt9v032->ctrls, ARRAY_SIZE(mt9v032_ctrls) + 8);
> + v4l2_ctrl_handler_init(&mt9v032->ctrls, ARRAY_SIZE(mt9v032_ctrls) + 9);
>
> v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
> V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
> @@ -763,6 +773,10 @@ static int mt9v032_probe(struct i2c_client *client,
> V4L2_CID_VBLANK, MT9V032_VERTICAL_BLANKING_MIN,
> MT9V032_VERTICAL_BLANKING_MAX, 1,
> MT9V032_VERTICAL_BLANKING_DEF);
> + v4l2_ctrl_new_std_menu_items(&mt9v032->ctrls, &mt9v032_ctrl_ops,
> + V4L2_CID_TEST_PATTERN,
> + ARRAY_SIZE(mt9v032_test_pattern_menu) - 1, 0,
> + 0, mt9v032_test_pattern_menu);
>
> mt9v032->pixel_rate =
> v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
--
Regards,
Laurent Pinchart
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