On 29/03/17 15:42, Hugues FRUCHET wrote:
> Acked-by: Hugues Fruchet <[email protected]>
>
> Tested successfully on STM324x9I-EVAL evaluation board embedding
> an OV2640 camera sensor.
>
> I don't understand the comment around s_power op that has been dropped
> (it is there in code), and no problem is observed doing several
> open/close, tell me if I miss something.
Darn, I forgot to remove that comment in the commit log. It's a leftover from
an earlier version.
Regards,
Hans
>
> BR,
> Hugues.
>
> On 03/28/2017 10:23 AM, Hans Verkuil wrote:
>> From: Hans Verkuil <[email protected]>
>>
>> Convert ov2640 to a standard subdev driver. The soc-camera driver no longer
>> uses this driver, so it can safely be converted.
>>
>> Note: the s_power op has been dropped: this never worked. When the last
>> open()
>> is closed, then the power is turned off, and when it is opened again the
>> power
>> is turned on again, but the old state isn't restored.
>>
>> Someone else can figure out in the future how to get this working correctly,
>> but I don't want to spend more time on this.
>>
>> Signed-off-by: Hans Verkuil <[email protected]>
>> Acked-by: Sakari Ailus <[email protected]>
>> ---
>> drivers/media/i2c/Kconfig | 11 ++++
>> drivers/media/i2c/Makefile | 1 +
>> drivers/media/i2c/{soc_camera => }/ov2640.c | 89
>> +++++------------------------
>> drivers/media/i2c/soc_camera/Kconfig | 6 --
>> drivers/media/i2c/soc_camera/Makefile | 1 -
>> 5 files changed, 27 insertions(+), 81 deletions(-)
>> rename drivers/media/i2c/{soc_camera => }/ov2640.c (94%)
>>
>> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
>> index cee1dae6e014..db2c63f592c5 100644
>> --- a/drivers/media/i2c/Kconfig
>> +++ b/drivers/media/i2c/Kconfig
>> @@ -520,6 +520,17 @@ config VIDEO_APTINA_PLL
>> config VIDEO_SMIAPP_PLL
>> tristate
>>
>> +config VIDEO_OV2640
>> + tristate "OmniVision OV2640 sensor support"
>> + depends on VIDEO_V4L2 && I2C && GPIOLIB
>> + depends on MEDIA_CAMERA_SUPPORT
>> + help
>> + This is a Video4Linux2 sensor-level driver for the OmniVision
>> + OV2640 camera.
>> +
>> + To compile this driver as a module, choose M here: the
>> + module will be called ov2640.
>> +
>> config VIDEO_OV2659
>> tristate "OmniVision OV2659 sensor support"
>> depends on VIDEO_V4L2 && I2C
>> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
>> index 5bc7bbeb5499..50af1e11c85a 100644
>> --- a/drivers/media/i2c/Makefile
>> +++ b/drivers/media/i2c/Makefile
>> @@ -57,6 +57,7 @@ obj-$(CONFIG_VIDEO_VP27SMPX) += vp27smpx.o
>> obj-$(CONFIG_VIDEO_SONY_BTF_MPX) += sony-btf-mpx.o
>> obj-$(CONFIG_VIDEO_UPD64031A) += upd64031a.o
>> obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o
>> +obj-$(CONFIG_VIDEO_OV2640) += ov2640.o
>> obj-$(CONFIG_VIDEO_OV7640) += ov7640.o
>> obj-$(CONFIG_VIDEO_OV7670) += ov7670.o
>> obj-$(CONFIG_VIDEO_OV9650) += ov9650.o
>> diff --git a/drivers/media/i2c/soc_camera/ov2640.c
>> b/drivers/media/i2c/ov2640.c
>> similarity index 94%
>> rename from drivers/media/i2c/soc_camera/ov2640.c
>> rename to drivers/media/i2c/ov2640.c
>> index b9a0069f5b33..83f88efbce69 100644
>> --- a/drivers/media/i2c/soc_camera/ov2640.c
>> +++ b/drivers/media/i2c/ov2640.c
>> @@ -24,8 +24,8 @@
>> #include <linux/v4l2-mediabus.h>
>> #include <linux/videodev2.h>
>>
>> -#include <media/soc_camera.h>
>> #include <media/v4l2-clk.h>
>> +#include <media/v4l2-device.h>
>> #include <media/v4l2-subdev.h>
>> #include <media/v4l2-ctrls.h>
>> #include <media/v4l2-image-sizes.h>
>> @@ -287,7 +287,6 @@ struct ov2640_priv {
>> struct v4l2_clk *clk;
>> const struct ov2640_win_size *win;
>>
>> - struct soc_camera_subdev_desc ssdd_dt;
>> struct gpio_desc *resetb_gpio;
>> struct gpio_desc *pwdn_gpio;
>> };
>> @@ -677,13 +676,8 @@ static int ov2640_reset(struct i2c_client *client)
>> }
>>
>> /*
>> - * soc_camera_ops functions
>> + * functions
>> */
>> -static int ov2640_s_stream(struct v4l2_subdev *sd, int enable)
>> -{
>> - return 0;
>> -}
>> -
>> static int ov2640_s_ctrl(struct v4l2_ctrl *ctrl)
>> {
>> struct v4l2_subdev *sd =
>> @@ -744,10 +738,16 @@ static int ov2640_s_register(struct v4l2_subdev *sd,
>> static int ov2640_s_power(struct v4l2_subdev *sd, int on)
>> {
>> struct i2c_client *client = v4l2_get_subdevdata(sd);
>> - struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
>> struct ov2640_priv *priv = to_ov2640(client);
>>
>> - return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
>> + gpiod_direction_output(priv->pwdn_gpio, !on);
>> + if (on && priv->resetb_gpio) {
>> + /* Active the resetb pin to perform a reset pulse */
>> + gpiod_direction_output(priv->resetb_gpio, 1);
>> + usleep_range(3000, 5000);
>> + gpiod_direction_output(priv->resetb_gpio, 0);
>> + }
>> + return 0;
>> }
>>
>> /* Select the nearest higher resolution for capture */
>> @@ -994,26 +994,6 @@ static struct v4l2_subdev_core_ops
>> ov2640_subdev_core_ops = {
>> .s_power = ov2640_s_power,
>> };
>>
>> -static int ov2640_g_mbus_config(struct v4l2_subdev *sd,
>> - struct v4l2_mbus_config *cfg)
>> -{
>> - struct i2c_client *client = v4l2_get_subdevdata(sd);
>> - struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
>> -
>> - cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_MASTER |
>> - V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_HIGH |
>> - V4L2_MBUS_DATA_ACTIVE_HIGH;
>> - cfg->type = V4L2_MBUS_PARALLEL;
>> - cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);
>> -
>> - return 0;
>> -}
>> -
>> -static struct v4l2_subdev_video_ops ov2640_subdev_video_ops = {
>> - .s_stream = ov2640_s_stream,
>> - .g_mbus_config = ov2640_g_mbus_config,
>> -};
>> -
>> static const struct v4l2_subdev_pad_ops ov2640_subdev_pad_ops = {
>> .enum_mbus_code = ov2640_enum_mbus_code,
>> .get_selection = ov2640_get_selection,
>> @@ -1023,40 +1003,9 @@ static const struct v4l2_subdev_pad_ops
>> ov2640_subdev_pad_ops = {
>>
>> static struct v4l2_subdev_ops ov2640_subdev_ops = {
>> .core = &ov2640_subdev_core_ops,
>> - .video = &ov2640_subdev_video_ops,
>> .pad = &ov2640_subdev_pad_ops,
>> };
>>
>> -/* OF probe functions */
>> -static int ov2640_hw_power(struct device *dev, int on)
>> -{
>> - struct i2c_client *client = to_i2c_client(dev);
>> - struct ov2640_priv *priv = to_ov2640(client);
>> -
>> - dev_dbg(&client->dev, "%s: %s the camera\n",
>> - __func__, on ? "ENABLE" : "DISABLE");
>> -
>> - if (priv->pwdn_gpio)
>> - gpiod_direction_output(priv->pwdn_gpio, !on);
>> -
>> - return 0;
>> -}
>> -
>> -static int ov2640_hw_reset(struct device *dev)
>> -{
>> - struct i2c_client *client = to_i2c_client(dev);
>> - struct ov2640_priv *priv = to_ov2640(client);
>> -
>> - if (priv->resetb_gpio) {
>> - /* Active the resetb pin to perform a reset pulse */
>> - gpiod_direction_output(priv->resetb_gpio, 1);
>> - usleep_range(3000, 5000);
>> - gpiod_direction_output(priv->resetb_gpio, 0);
>> - }
>> -
>> - return 0;
>> -}
>> -
>> static int ov2640_probe_dt(struct i2c_client *client,
>> struct ov2640_priv *priv)
>> {
>> @@ -1076,11 +1025,6 @@ static int ov2640_probe_dt(struct i2c_client *client,
>> else if (IS_ERR(priv->pwdn_gpio))
>> return PTR_ERR(priv->pwdn_gpio);
>>
>> - /* Initialize the soc_camera_subdev_desc */
>> - priv->ssdd_dt.power = ov2640_hw_power;
>> - priv->ssdd_dt.reset = ov2640_hw_reset;
>> - client->dev.platform_data = &priv->ssdd_dt;
>> -
>> return 0;
>> }
>>
>> @@ -1091,7 +1035,6 @@ static int ov2640_probe(struct i2c_client *client,
>> const struct i2c_device_id *did)
>> {
>> struct ov2640_priv *priv;
>> - struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
>> struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
>> int ret;
>>
>> @@ -1112,17 +1055,15 @@ static int ov2640_probe(struct i2c_client *client,
>> if (IS_ERR(priv->clk))
>> return -EPROBE_DEFER;
>>
>> - if (!ssdd && !client->dev.of_node) {
>> + if (!client->dev.of_node) {
>> dev_err(&client->dev, "Missing platform_data for driver\n");
>> ret = -EINVAL;
>> goto err_clk;
>> }
>>
>> - if (!ssdd) {
>> - ret = ov2640_probe_dt(client, priv);
>> - if (ret)
>> - goto err_clk;
>> - }
>> + ret = ov2640_probe_dt(client, priv);
>> + if (ret)
>> + goto err_clk;
>>
>> v4l2_i2c_subdev_init(&priv->subdev, client, &ov2640_subdev_ops);
>> v4l2_ctrl_handler_init(&priv->hdl, 2);
>> @@ -1190,6 +1131,6 @@ static struct i2c_driver ov2640_i2c_driver = {
>>
>> module_i2c_driver(ov2640_i2c_driver);
>>
>> -MODULE_DESCRIPTION("SoC Camera driver for Omni Vision 2640 sensor");
>> +MODULE_DESCRIPTION("Driver for Omni Vision 2640 sensor");
>> MODULE_AUTHOR("Alberto Panizzo");
>> MODULE_LICENSE("GPL v2");
>> diff --git a/drivers/media/i2c/soc_camera/Kconfig
>> b/drivers/media/i2c/soc_camera/Kconfig
>> index 7704bcf5cc25..96859f37cb1c 100644
>> --- a/drivers/media/i2c/soc_camera/Kconfig
>> +++ b/drivers/media/i2c/soc_camera/Kconfig
>> @@ -41,12 +41,6 @@ config SOC_CAMERA_MT9V022
>> help
>> This driver supports MT9V022 cameras from Micron
>>
>> -config SOC_CAMERA_OV2640
>> - tristate "ov2640 camera support"
>> - depends on SOC_CAMERA && I2C
>> - help
>> - This is a ov2640 camera driver
>> -
>> config SOC_CAMERA_OV5642
>> tristate "ov5642 camera support"
>> depends on SOC_CAMERA && I2C
>> diff --git a/drivers/media/i2c/soc_camera/Makefile
>> b/drivers/media/i2c/soc_camera/Makefile
>> index 6f994f9353a0..974bdb721dbe 100644
>> --- a/drivers/media/i2c/soc_camera/Makefile
>> +++ b/drivers/media/i2c/soc_camera/Makefile
>> @@ -3,7 +3,6 @@ obj-$(CONFIG_SOC_CAMERA_MT9M001) += mt9m001.o
>> obj-$(CONFIG_SOC_CAMERA_MT9T031) += mt9t031.o
>> obj-$(CONFIG_SOC_CAMERA_MT9T112) += mt9t112.o
>> obj-$(CONFIG_SOC_CAMERA_MT9V022) += mt9v022.o
>> -obj-$(CONFIG_SOC_CAMERA_OV2640) += ov2640.o
>> obj-$(CONFIG_SOC_CAMERA_OV5642) += ov5642.o
>> obj-$(CONFIG_SOC_CAMERA_OV6650) += ov6650.o
>> obj-$(CONFIG_SOC_CAMERA_OV772X) += ov772x.o
>>
