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From: Dongchun Zhu <dongchun.zhu@mediatek.com>
To: Nicolas Boichat <drinkcat@chromium.org>
Cc: <mchehab@kernel.org>, Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Matthias Brugger <matthias.bgg@gmail.com>, <bingbu.cao@intel.com>,
	<devicetree@vger.kernel.org>,
	srv_heupstream <srv_heupstream@mediatek.com>,
	<menghui.lin@mediatek.com>, <shengnan.wang@mediatek.com>,
	<sj.huang@mediatek.com>,
	"moderated list:ARM/Mediatek SoC support" 
	<linux-mediatek@lists.infradead.org>, <louis.kuo@mediatek.com>,
	linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>,
	<linux-media@vger.kernel.org>, <tfiga@google.com>
Subject: Re: [PATCH 1/3] media: i2c: ov02a10: Add ov02a10 camera sensor driver
Date: Thu, 13 Jun 2019 10:44:00 +0800
Message-ID: <1560393840.9392.52.camel@mhfsdcap03> (raw)
In-Reply-To: <CANMq1KBZ3njBaBwA0g=9B3W7PwN2yUzjLj4VNpPQzVZ_DaCOzg@mail.gmail.com>

Hi Nicolas,

On Sun, 2019-05-26 at 16:53 +0800, Nicolas Boichat wrote:
> On Thu, May 23, 2019 at 6:22 PM <dongchun.zhu@mediatek.com> wrote:
> >
> > From: Dongchun Zhu <dongchun.zhu@mediatek.com>
> >
> > Add a V4L2 sub-device driver for the OmniVision image sensor.
> > This is a camera sensor using the I2C bus for control and the
> > CSI-2 bus for data.
> >
> > Signed-off-by: Dongchun Zhu <dongchun.zhu@mediatek.com>
> > ---
> >  drivers/media/i2c/Makefile  |    1 +
> >  drivers/media/i2c/ov02a10.c | 1067 +++++++++++++++++++++++++++++++++++++++++++
> >  2 files changed, 1068 insertions(+)
> >  create mode 100644 drivers/media/i2c/ov02a10.c
> >
> > diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
> > index d8ad9da..4b8f67b 100644
> > --- a/drivers/media/i2c/Makefile
> > +++ b/drivers/media/i2c/Makefile
> > @@ -63,6 +63,7 @@ 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-$(CONFIG_VIDEO_OV02A10) += ov02a10.o
> >  obj-$(CONFIG_VIDEO_OV2640) += ov2640.o
> >  obj-$(CONFIG_VIDEO_OV2680) += ov2680.o
> >  obj-$(CONFIG_VIDEO_OV2685) += ov2685.o
> > diff --git a/drivers/media/i2c/ov02a10.c b/drivers/media/i2c/ov02a10.c
> > new file mode 100644
> > index 0000000..39472ff
> > --- /dev/null
> > +++ b/drivers/media/i2c/ov02a10.c
> > @@ -0,0 +1,1067 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * A V4L2 driver for OmniVision OV02A10 cameras.
> > + *
> > + * Based on Omnivision OV02A10 Camera Driver
> > + * Copyright (C) 2019 MediaTek Inc.
> > + *
> > + * This program is free software; you can redistribute it and/or
> > + * modify it under the terms of the GNU General Public License as
> > + * published by the Free Software Foundation version 2.
> > + *
> > + * This program is distributed .as is. WITHOUT ANY WARRANTY of any
> > + * kind, whether express or implied; without even the implied warranty
> > + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> > + * GNU General Public License for more details.
> > + */
> 
> This is not needed, you already have the SPDX header
> 

Fixed in next release.

> > +
> > +#include <linux/clk.h>
> > +#include <linux/device.h>
> > +#include <linux/delay.h>
> > +#include <linux/gpio/consumer.h>
> > +#include <linux/i2c.h>
> > +#include <linux/module.h>
> > +#include <linux/pm_runtime.h>
> > +#include <linux/regulator/consumer.h>
> > +#include <linux/sysfs.h>
> > +#include <media/media-entity.h>
> > +#include <media/v4l2-async.h>
> > +#include <media/v4l2-ctrls.h>
> > +#include <media/v4l2-subdev.h>
> > +
> > +#define CHIP_ID                                         0x2509
> > +#define OV02A10_REG_CHIP_ID_H                           0x02
> > +#define OV02A10_REG_CHIP_ID_L                           0x03
> > +#define OV02A10_ID(_msb, _lsb)                          ((_msb) << 8 | (_lsb))
> > +
> > +/* bit[1] vertical upside down */
> > +/* bit[0] horizontal mirror */
> > +#define OV02A10_REG_UPDOWN_MIRROR                       0x3F
> > +
> > +/* enable mirror & flip global effective */
> > +#define OV02A10_REG_UPDOWN_MIRROR_ENABLE                0x01
> 
> So according to comment above, this enables horizontal mirror only?
> 
> What about vertical upside down? Do we want to define a mask for that?
> 

Fixed in next release.

> > +
> > +#define ov02a10_XVCLK_FREQ                              24000000
> 
> Upper-case OV02A10_ prefix for all these macros.
> 

Fixed in next release.

> > +#define REG_SC_CTRL_MODE                                0xac
> > +
> > +#define SC_CTRL_MODE_STANDBY                            0x00
> > +#define SC_CTRL_MODE_STREAMING                          0x01
> > +
> > +#define ov02a10_REG_EXPOSURE_H                          0x03
> > +#define ov02a10_REG_EXPOSURE_L                          0x04
> > +#define        ov02a10_EXPOSURE_MIN                            4
> > +#define        ov02a10_EXPOSURE_STEP                           1
> > +
> > +#define ov02a10_REG_VTS_H                               0x05
> > +#define ov02a10_REG_VTS_L                               0x06
> > +#define ov02a10_VTS_MAX                                 0x209f
> > +#define ov02a10_VTS_MIN                                 0x04cf
> > +
> > +#define ov02a10_REG_GAIN                                0x24
> > +#define ov02a10_GAIN_MIN                                0x10
> > +#define ov02a10_GAIN_MAX                                0xf8
> > +#define ov02a10_GAIN_STEP                               0x01
> > +#define ov02a10_GAIN_DEFAULT                            0x40
> > +
> > +#define ov02a10_REG_TEST_PATTERN                        0x0d
> > +#define ov02a10_TEST_PATTERN_DISABLED                   0x00
> > +#define ov02a10_TEST_PATTERN_COLOR_BAR                  0x01
> > +
> > +#define REG_NULL                                        0xFF
> > +
> > +#define ov02a10_LANES                                   1
> > +#define ov02a10_BITS_PER_SAMPLE                         10
> > +
> > +static const char * const ov02a10_supply_names[] = {
> > +       "avdd",         /* Analog power */
> > +       "dovdd",        /* Digital I/O power */
> > +       "dvdd",         /* Digital core power */
> > +};
> > +
> > +#define ov02a10_NUM_SUPPLIES ARRAY_SIZE(ov02a10_supply_names)
> > +
> > +struct regval {
> > +       u16 addr;
> > +       u8 val;
> > +};
> > +
> > +struct ov02a10_mode {
> > +       u32 width;
> > +       u32 height;
> > +       u32 exp_def;
> > +       u32 hts_def;
> > +       u32 vts_def;
> > +       const struct regval *reg_list;
> > +};
> > +
> > +struct ov02a10 {
> > +       struct i2c_client       *client;
> > +       struct clk              *xvclk;
> > +       struct gpio_desc        *pwdn_gpio;
> > +       struct gpio_desc        *reset_gpio;
> > +       struct regulator_bulk_data supplies[ov02a10_NUM_SUPPLIES];
> > +
> > +       bool                    streaming;
> > +       bool                    upside_down;
> > +
> > +       /*
> > +        * Serialize control access, get/set format, get selection
> > +        * and start streaming.
> > +        */
> > +       struct mutex            mutex;
> > +       struct v4l2_subdev      subdev;
> > +       struct media_pad        pad;
> > +       struct v4l2_ctrl        *anal_gain;
> > +       struct v4l2_ctrl        *exposure;
> > +       struct v4l2_ctrl        *hblank;
> > +       struct v4l2_ctrl        *vblank;
> > +       struct v4l2_ctrl        *test_pattern;
> > +       struct v4l2_ctrl_handler ctrl_handler;
> > +
> > +       const struct ov02a10_mode *cur_mode;
> > +};
> > +
> > +#define to_ov02a10(sd) container_of(sd, struct ov02a10, subdev)
> > +
> > +/* test pattern output */
> > +static struct regval ov02a10_test_pattern_regs[] = {
> 
> const
> 

Fixed in next release.

> > +       {0xfd, 0x01},
> > +       {0x0d, 0x00},
> > +       {0xb6, 0x01},
> > +       {0x01, 0x01},
> > +       {0xfd, 0x01},
> > +       {0xac, 0x01},
> > +       {REG_NULL, 0x00}
> > +};
> > +
> > +/*
> > + * Xclk 24Mhz
> > + * Pclk 39Mhz
> > + * linelength 934(0x3a6)
> > + * framelength 1390(0x56E)
> > + * grabwindow_width 1600
> > + * grabwindow_height 1200
> > + * max_framerate 30fps
> > + * mipi_datarate per lane 780Mbps
> > + */
> > +static struct regval ov02a10_1600x1200_regs[] = {
> 
> const
> 

Fixed in next release.

> > +       {0xfd, 0x01},
> > +       {0xac, 0x00},
> > +       {0xfd, 0x00},
> > +       {0x2f, 0x29},
> > +       {0x34, 0x00},
> > +       {0x35, 0x21},
> > +       {0x30, 0x15},
> > +       {0x33, 0x01},
> > +       {0xfd, 0x01},
> > +       {0x44, 0x00},
> > +       {0x2a, 0x4c},
> > +       {0x2b, 0x1e},
> > +       {0x2c, 0x60},
> > +       {0x25, 0x11},
> > +       {0x03, 0x01},
> > +       {0x04, 0xae},
> > +       {0x09, 0x00},
> > +       {0x0a, 0x02},
> > +       {0x06, 0xa6},
> > +       {0x31, 0x00},
> > +       {0x24, 0x40},
> > +       {0x01, 0x01},
> > +       {0xfb, 0x73},
> > +       {0xfd, 0x01},
> > +       {0x16, 0x04},
> > +       {0x1c, 0x09},
> > +       {0x21, 0x42},
> > +       {0x12, 0x04},
> > +       {0x13, 0x10},
> > +       {0x11, 0x40},
> > +       {0x33, 0x81},
> > +       {0xd0, 0x00},
> > +       {0xd1, 0x01},
> > +       {0xd2, 0x00},
> > +       {0x50, 0x10},
> > +       {0x51, 0x23},
> > +       {0x52, 0x20},
> > +       {0x53, 0x10},
> > +       {0x54, 0x02},
> > +       {0x55, 0x20},
> > +       {0x56, 0x02},
> > +       {0x58, 0x48},
> > +       {0x5d, 0x15},
> > +       {0x5e, 0x05},
> > +       {0x66, 0x66},
> > +       {0x68, 0x68},
> > +       {0x6b, 0x00},
> > +       {0x6c, 0x00},
> > +       {0x6f, 0x40},
> > +       {0x70, 0x40},
> > +       {0x71, 0x0a},
> > +       {0x72, 0xf0},
> > +       {0x73, 0x10},
> > +       {0x75, 0x80},
> > +       {0x76, 0x10},
> > +       {0x84, 0x00},
> > +       {0x85, 0x10},
> > +       {0x86, 0x10},
> > +       {0x87, 0x00},
> > +       {0x8a, 0x22},
> > +       {0x8b, 0x22},
> > +       {0x19, 0xf1},
> > +       {0x29, 0x01},
> > +       {0xfd, 0x01},
> > +       {0x9d, 0x96},
> > +       {0xa0, 0x29},
> > +       {0xa1, 0x05},
> > +       {0xad, 0x62},
> > +       {0xae, 0x00},
> > +       {0xaf, 0x85},
> > +       {0xb1, 0x01},
> > +       {0x8e, 0x06},
> > +       {0x8f, 0x40},
> > +       {0x90, 0x04},
> > +       {0x91, 0xb0},
> > +       {0x45, 0x01},
> > +       {0x46, 0x00},
> > +       {0x47, 0x6c},
> > +       {0x48, 0x03},
> > +       {0x49, 0x8b},
> > +       {0x4a, 0x00},
> > +       {0x4b, 0x07},
> > +       {0x4c, 0x04},
> > +       {0x4d, 0xb7},
> > +       {0xf0, 0x40},
> > +       {0xf1, 0x40},
> > +       {0xf2, 0x40},
> > +       {0xf3, 0x40},
> > +       {0x3f, 0x00},
> > +       {0xfd, 0x01},
> > +       {0x05, 0x00},
> > +       {0x06, 0xa6},
> > +       {0xfd, 0x01},
> > +       {REG_NULL, 0x00}
> > +};
> > +
> > +#define ov02a10_LINK_FREQ_390MHZ               390000000
> > +static const s64 link_freq_menu_items[] = {
> > +       ov02a10_LINK_FREQ_390MHZ
> > +};
> > +
> > +static const char * const ov02a10_test_pattern_menu[] = {
> > +       "Disabled",
> > +       "Color Bar",
> > +};
> > +
> > +static const int ov02a10_test_pattern_val[] = {
> > +       ov02a10_TEST_PATTERN_DISABLED,
> > +       ov02a10_TEST_PATTERN_COLOR_BAR,
> > +};
> > +
> > +static const struct ov02a10_mode supported_modes[] = {
> > +       {
> > +               .width = 1600,
> > +               .height = 1200,
> > +               .exp_def = 0x01ae,
> > +               .hts_def = 0x03a6,
> > +               .vts_def = 0x056e,
> > +               .reg_list = ov02a10_1600x1200_regs,
> > +       },
> > +};
> > +
> > +/* write a register */
> > +static int ov02a10_write_reg(struct i2c_client *client, u8 addr, u8 val)
> > +{
> > +       u8 buf[2] = { addr, val };
> > +
> > +       int ret = i2c_master_send(client, buf, 2);
> > +
> > +       if (ret < 0) {
> > +               dev_err(&client->dev, "%s: error: reg=%x, val=%x\n",
> > +                       __func__, addr, val);
> > +               return ret;
> > +       }
> > +
> > +       return ret == 2 ? 0 : ret;
> 
> You want to return a negative error value if ret == 1 or ret == 0...
> (and maybe print an error message)
> 

Fixed in next release.

> > +}
> > +
> > +static int ov02a10_write_array(struct i2c_client *client,
> > +                              const struct regval *regs)
> > +{
> > +       int ret = 0;
> > +       u32 i;
> > +
> > +       for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) {
> 
> ret == 0 test is useless, you already abort the loop. Just drop it.
> 

Fixed in next release.

> > +               ret = ov02a10_write_reg(client, regs[i].addr, regs[i].val);
> > +               if (ret < 0)
> > +                       return ret;
> > +       }
> > +
> > +       return 0;
> > +}
> > +
> > +/* read a register */
> > +static int ov02a10_read_reg(struct i2c_client *client, u8 reg, u8 *val)
> > +{
> > +       int ret;
> > +       u8 data = reg;
> > +       struct i2c_msg msg = {
> > +               .addr   = client->addr,
> > +               .flags  = 0,
> > +               .len    = 1,
> > +               .buf    = &data,
> > +       };
> > +
> > +       ret = i2c_transfer(client->adapter, &msg, 1);
> > +       if (ret < 0) {
> > +               dev_err(&client->dev, "i2c_transfer failed, ret %d\n", ret);
> > +               goto err;
> > +       }
> > +
> > +       msg.flags = I2C_M_RD;
> > +       ret = i2c_transfer(client->adapter, &msg, 1);
> > +       if (ret < 0) {
> > +               dev_err(&client->dev, "i2c_transfer --I2C_M_RD failed, \
> > +                       ret %d\n", ret);
> > +               goto err;
> > +       }
> > +
> > +       *val = data;
> > +       return 0;
> > +
> > +err:
> > +       dev_err(&client->dev, "Failed reading register 0x%02x!\n", reg);
> > +       return ret;
> > +}
> > +
> > +static void ov02a10_fill_fmt(const struct ov02a10_mode *mode,
> > +                            struct v4l2_mbus_framefmt *fmt)
> > +{
> > +       fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
> > +       fmt->width = mode->width;
> > +       fmt->height = mode->height;
> > +       fmt->field = V4L2_FIELD_NONE;
> > +}
> > +
> > +static int ov02a10_set_fmt(struct v4l2_subdev *sd,
> > +                          struct v4l2_subdev_pad_config *cfg,
> > +                          struct v4l2_subdev_format *fmt)
> > +{
> > +       struct ov02a10 *ov02a10 = to_ov02a10(sd);
> > +       struct v4l2_mbus_framefmt *mbus_fmt = &fmt->format;
> > +
> > +       /* only one mode supported for now */
> > +       ov02a10_fill_fmt(ov02a10->cur_mode, mbus_fmt);
> > +
> > +       return 0;
> > +}
> > +
> > +static int ov02a10_get_fmt(struct v4l2_subdev *sd,
> > +                          struct v4l2_subdev_pad_config *cfg,
> > +                          struct v4l2_subdev_format *fmt)
> > +{
> > +       struct ov02a10 *ov02a10 = to_ov02a10(sd);
> > +       struct v4l2_mbus_framefmt *mbus_fmt = &fmt->format;
> > +
> > +       ov02a10_fill_fmt(ov02a10->cur_mode, mbus_fmt);
> > +
> > +       return 0;
> > +}
> > +
> > +static int ov02a10_enum_mbus_code(struct v4l2_subdev *sd,
> > +                                 struct v4l2_subdev_pad_config *cfg,
> > +                                 struct v4l2_subdev_mbus_code_enum *code)
> > +{
> > +       if (code->index >= ARRAY_SIZE(supported_modes))
> > +               return -EINVAL;
> > +
> > +       code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
> > +
> > +       return 0;
> > +}
> > +
> > +static int ov02a10_enum_frame_sizes(struct v4l2_subdev *sd,
> > +                                   struct v4l2_subdev_pad_config *cfg,
> > +                                   struct v4l2_subdev_frame_size_enum *fse)
> > +{
> > +       int index = fse->index;
> 
> I'd just use fse->index below, simpler.
> 

Fixed in next release.

> > +
> > +       if (index >= ARRAY_SIZE(supported_modes))
> > +               return -EINVAL;
> > +
> > +       fse->code = MEDIA_BUS_FMT_SBGGR10_1X10;
> > +
> > +       fse->min_width  = supported_modes[index].width;
> > +       fse->max_width  = supported_modes[index].width;
> > +       fse->max_height = supported_modes[index].height;
> > +       fse->min_height = supported_modes[index].height;
> > +
> > +       return 0;
> > +}
> > +
> > +static int __ov02a10_power_on(struct ov02a10 *ov02a10)
> > +{
> > +       int ret;
> > +
> 
> Nit: No blank line here
> 

Fixed in next release.

> > +       struct device *dev = &ov02a10->client->dev;
> > +
> > +       ret = clk_prepare_enable(ov02a10->xvclk);
> > +       if (ret < 0) {
> > +               dev_err(dev, "Failed to enable xvclk\n");
> > +               return ret;
> > +       }
> > +
> > +       /* note: set 0 is high, set 1 is low */
> > +       gpiod_set_value_cansleep(ov02a10->reset_gpio, 1);
> > +       gpiod_set_value_cansleep(ov02a10->pwdn_gpio, 0);
> > +
> > +       ret = regulator_bulk_enable(ov02a10_NUM_SUPPLIES, ov02a10->supplies);
> > +       if (ret < 0) {
> > +               dev_err(dev, "Failed to enable regulators\n");
> > +               goto disable_clk;
> > +       }
> > +       usleep_range(7 * 1000, 8 * 1000);
> > +
> > +       gpiod_set_value_cansleep(ov02a10->pwdn_gpio, 1);
> > +       usleep_range(10 * 1000, 12 * 1000);
> > +
> > +       gpiod_set_value_cansleep(ov02a10->reset_gpio, 0);
> > +       usleep_range(10 * 1000, 12 * 1000);
> > +
> > +#ifdef SENSOR_HARDWARE_RESET
> 
> If we don't need this, please drop this code. Or remove the ifdef if we do.
> 

Fixed in next release.

> > +       /* sensor hardware reset */
> > +       gpiod_set_value_cansleep(ov02a10->reset_gpio, 1);
> > +       usleep_range(10 * 1000, 12 * 1000);
> > +       gpiod_set_value_cansleep(ov02a10->reset_gpio, 0);
> > +       usleep_range(10 * 1000, 12 * 1000);
> > +#endif
> > +
> > +       return 0;
> > +
> > +disable_clk:
> > +       clk_disable_unprepare(ov02a10->xvclk);
> > +
> > +       return ret;
> > +}
> > +
> > +static void __ov02a10_power_off(struct ov02a10 *ov02a10)
> > +{
> > +       clk_disable_unprepare(ov02a10->xvclk);
> > +       gpiod_set_value_cansleep(ov02a10->reset_gpio, 1);
> > +       gpiod_set_value_cansleep(ov02a10->pwdn_gpio, 1);
> > +       regulator_bulk_disable(ov02a10_NUM_SUPPLIES, ov02a10->supplies);
> > +}
> > +
> > +static int __ov02a10_start_stream(struct ov02a10 *ov02a10)
> > +{
> > +       int ret;
> > +
> > +       ret = ov02a10_write_array(ov02a10->client, ov02a10->cur_mode->reg_list);
> > +       if (ret)
> > +               return ret;
> > +
> > +       ret = __v4l2_ctrl_handler_setup(&ov02a10->ctrl_handler);
> > +       if (ret) {
> > +               pr_err("__v4l2_ctrl_handler_setup fail %d\n", ret);
> > +               return ret;
> > +       }
> > +
> > +       return ov02a10_write_reg(ov02a10->client,
> > +                                REG_SC_CTRL_MODE, SC_CTRL_MODE_STREAMING);
> > +}
> > +
> > +static int __ov02a10_stop_stream(struct ov02a10 *ov02a10)
> > +{
> > +       return ov02a10_write_reg(ov02a10->client,
> > +                                REG_SC_CTRL_MODE, SC_CTRL_MODE_STANDBY);
> > +}
> > +
> > +static int ov02a10_s_stream(struct v4l2_subdev *sd, int on)
> > +{
> > +       struct ov02a10 *ov02a10 = to_ov02a10(sd);
> > +       struct i2c_client *client = ov02a10->client;
> > +       int ret = 0;
> > +
> > +       pr_info("ov02a10 s_stream-(%d)\n", on);
> > +       mutex_lock(&ov02a10->mutex);
> > +
> > +       if (ov02a10->streaming == !on) {
> 
> You can simplify a bit by doing this, and de-indent the rest of the code:
> if (ov02a10->streaming == on)
>     goto unlock_and_return;
> 

Fixed in next release.

> > +               if (on) {
> > +                       ret = pm_runtime_get_sync(&client->dev);
> > +                       if (ret < 0) {
> > +                               pm_runtime_put_noidle(&client->dev);
> > +                               goto unlock_and_return;
> > +                       }
> > +
> > +                       ret = __ov02a10_start_stream(ov02a10);
> > +                       if (ret) {
> > +                               v4l2_err(sd, "start stream failed while write regs\n");
> > +                               pm_runtime_put(&client->dev);
> > +                               goto unlock_and_return;
> > +                       }
> > +               } else {
> > +                       __ov02a10_stop_stream(ov02a10);
> > +                       pm_runtime_put(&client->dev);
> > +               }
> > +
> > +               ov02a10->streaming = on;
> > +       }
> > +
> > +unlock_and_return:
> > +       mutex_unlock(&ov02a10->mutex);
> > +
> > +       return ret;
> > +}
> > +
> > +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
> > +static int ov02a10_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
> > +{
> > +       struct ov02a10 *ov02a10 = to_ov02a10(sd);
> > +       struct v4l2_mbus_framefmt *try_fmt;
> > +
> > +       mutex_lock(&ov02a10->mutex);
> > +
> > +       try_fmt = v4l2_subdev_get_try_format(sd, fh->pad, 0);
> > +       /* Initialize try_fmt */
> > +       ov02a10_fill_fmt(&supported_modes[0], try_fmt);
> > +
> > +       mutex_unlock(&ov02a10->mutex);
> > +
> > +       return 0;
> > +}
> > +#endif
> > +
> > +static int __maybe_unused ov02a10_runtime_resume(struct device *dev)
> > +{
> > +       struct i2c_client *client = to_i2c_client(dev);
> > +       struct v4l2_subdev *sd = i2c_get_clientdata(client);
> > +       struct ov02a10 *ov02a10 = to_ov02a10(sd);
> > +
> > +       return __ov02a10_power_on(ov02a10);
> > +}
> > +
> > +static int __maybe_unused ov02a10_runtime_suspend(struct device *dev)
> > +{
> > +       struct i2c_client *client = to_i2c_client(dev);
> > +       struct v4l2_subdev *sd = i2c_get_clientdata(client);
> > +       struct ov02a10 *ov02a10 = to_ov02a10(sd);
> > +
> > +       if (ov02a10->streaming == 1) {
> 
> I'd drop the == 1.
> 

Fixed in next release.

> > +               __ov02a10_stop_stream(ov02a10);
> > +               ov02a10->streaming = 0;
> > +       }
> > +       __ov02a10_power_off(ov02a10);
> > +
> > +       return 0;
> > +}
> > +
> > +static const struct dev_pm_ops ov02a10_pm_ops = {
> > +       SET_RUNTIME_PM_OPS(ov02a10_runtime_suspend,
> > +                          ov02a10_runtime_resume, NULL)
> > +};
> > +
> > +static int ov02a10_mod_reg(struct ov02a10 *ov02a10, u16 reg,
> > +                          u8 mask, u8 val)
> > +{
> > +       u8 read_val;
> > +       int ret;
> > +
> > +       ret = ov02a10_read_reg(ov02a10->client, reg, &read_val);
> > +       if (ret)
> > +               return ret;
> > +
> > +       read_val &= ~mask;
> > +       val &= mask;
> > +       val |= read_val;
> > +
> > +       return ov02a10_write_reg(ov02a10->client, reg, val);
> > +}
> 
> Move this function right after the read_reg/write_reg ones.
> 

Fixed in next release.

> > +
> > +/* mirror & flip reg setting effective */
> > +static int ov02a10_bayer_order(struct ov02a10 *ov02a10)
> > +{
> > +       int ret;
> > +
> > +       ret = ov02a10_write_reg(ov02a10->client,
> > +                               OV02A10_REG_UPDOWN_MIRROR_ENABLE,
> > +                               SC_CTRL_MODE_STREAMING);
> > +       if (ret < 0)
> > +               return ret;
> > +
> > +       return 0;
> > +}
> > +
> > +static int ov02a10_set_ctrl_hflip(struct ov02a10 *ov02a10, int value)
> > +{
> > +       /*
> > +        * If sensor is mounted upside down, mirror logic is inversed.
> > +        *
> > +        * Sensor is a BSI (Back Side Illuminated) one,
> > +        * so image captured is physically mirrored.
> > +        * This is why mirror logic is inversed in
> > +        * order to cancel this mirror effect.
> > +        */
> > +
> > +       /*
> > +        * P1: 0x3F:
> > +        * - [1]:       Vertical upside down
> > +        * - [0]:       Horizontal mirror
> > +        */
> 
> This was already described above, please drop it.
> 

Fixed in next release.

> > +
> > +       int ret;
> > +
> > +       ret = ov02a10_mod_reg(ov02a10, OV02A10_REG_UPDOWN_MIRROR,
> > +                             BIT(0),
> 
> Use OV02A10_REG_UPDOWN_MIRROR_ENABLE that you defined above.
> 

Fixed in next release.

> > +                             (!(value ^ ov02a10->upside_down)) ?
> > +                             BIT(0) : 0);
> > +
> > +       if (ret < 0)
> > +               return ret;
> > +
> > +       return ov02a10_bayer_order(ov02a10);
> > +}
> > +
> > +static int ov02a10_set_ctrl_vflip(struct ov02a10 *ov02a10, int value)
> > +{
> > +       /* If sensor is mounted upside down, flip logic is inversed */
> > +
> > +       /*
> > +        * P1: 0x3F:
> > +        * - [1]:       Vertical upside down
> > +        * - [0]:       Horizontal mirror
> > +        */
> 
> ditto
> 

Fixed in next release.

> > +
> > +       int ret;
> > +
> > +       ret = ov02a10_mod_reg(ov02a10, OV02A10_REG_UPDOWN_MIRROR,
> > +                             BIT(1),
> 
> Please define a macro for this one.
> 

Fixed in next release.

> > +                             (value ^ ov02a10->upside_down) ?
> > +                             BIT(1) : 0);
> > +
> > +       if (ret < 0)
> > +               return ret;
> > +
> > +       return ov02a10_bayer_order(ov02a10);
> > +}
> > +
> > +static int ov02a10_set_test_pattern(struct ov02a10 *ov02a10, s32 value)
> > +{
> > +       int ret = 0;
> > +
> > +       if (value)
> > +               return ov02a10_write_array(ov02a10->client,
> > +                                          ov02a10_test_pattern_regs);
> > +
> > +       return ret;
> 
> Just return 0, and drop variable ret.
> 

Fixed in next release.

> > +}
> > +
> > +static int ov02a10_set_ctrl(struct v4l2_ctrl *ctrl)
> > +{
> > +       struct ov02a10 *ov02a10 = container_of(ctrl->handler,
> > +                                            struct ov02a10, ctrl_handler);
> > +       struct i2c_client *client = ov02a10->client;
> > +       s64 max_expo;
> > +       int ret = 0;
> > +
> > +       /* Propagate change of current control to all related controls */
> > +       switch (ctrl->id) {
> > +       case V4L2_CID_VBLANK:
> 
> That looks like an if (ctrl->id == V4L2_CID_VBLANK)
> 

Fixed in next release.

> > +               /* Update max exposure while meeting expected vblanking */
> > +               max_expo = ov02a10->cur_mode->height + ctrl->val - 4;
> > +               __v4l2_ctrl_modify_range(ov02a10->exposure,
> > +                                        ov02a10->exposure->minimum, max_expo,
> > +                                        ov02a10->exposure->step,
> > +                                        ov02a10->exposure->default_value);
> > +               break;
> > +       }
> > +
> > +       if (pm_runtime_get_if_in_use(&client->dev) <= 0)
> > +               return 0;
> > +
> > +       switch (ctrl->id) {
> > +       case V4L2_CID_EXPOSURE:
> > +               ret = ov02a10_write_reg(client, 0xfd, 0x01);
> 
> Please define register 0xfd, and bit 0. Same below with register 0x01.
> 

Fixed in next release.

> > +               if (ret < 0)
> > +                       return ret;
> > +               ret = ov02a10_write_reg(client, ov02a10_REG_EXPOSURE_H,
> > +                                       ((ctrl->val >> 8) & 0xFF));
> > +               if (!ret) {
> > +                       ret = ov02a10_write_reg(client, ov02a10_REG_EXPOSURE_L,
> > +                                               (ctrl->val & 0xFF));
> > +                       if (ret < 0)
> > +                               return ret;
> > +               }
> > +               ret = ov02a10_write_reg(client, 0x01, 0x01);
> > +               if (ret < 0)
> > +                       return ret;
> > +               break;
> > +       case V4L2_CID_ANALOGUE_GAIN:
> > +               ret = ov02a10_write_reg(client, 0xfd, 0x01);
> > +               if (ret < 0)
> > +                       return ret;
> > +               ret = ov02a10_write_reg(client, ov02a10_REG_GAIN,
> > +                                       (ctrl->val & 0xFF));
> > +               if (ret < 0)
> > +                       return ret;
> > +               ret = ov02a10_write_reg(client, 0x01, 0x01);
> > +               if (ret < 0)
> > +                       return ret;
> > +               break;
> > +       case V4L2_CID_VBLANK:
> > +               ret = ov02a10_write_reg(client, 0xfd, 0x01);
> > +               if (ret < 0)
> > +                       return ret;
> > +               ret = ov02a10_write_reg(client, ov02a10_REG_VTS_H,
> > +                                       (((ctrl->val +
> > +                                       ov02a10->cur_mode->height - 1224) >> 8)
> > +                                       & 0xFF));
> > +               if (!ret) {
> > +                       ret = ov02a10_write_reg(client, ov02a10_REG_VTS_L,
> > +                                               ((ctrl->val +
> > +                                               ov02a10->cur_mode->height -
> > +                                               1224) & 0xFF));
> > +                       if (ret < 0)
> > +                               return ret;
> > +               }
> > +               ret = ov02a10_write_reg(client, 0x01, 0x01);
> > +               if (ret < 0)
> > +                       return ret;
> > +               break;
> > +       case V4L2_CID_TEST_PATTERN:
> > +               ret =
> > +                ov02a10_set_test_pattern(ov02a10,
> > +                                         ov02a10_test_pattern_val[ctrl->val]);
> > +               break;
> > +       case V4L2_CID_HFLIP:
> > +               if (ov02a10->streaming)
> > +                       return -EBUSY;
> > +               if (ctrl->val)
> 
> Why? Don't we want to reset the flip if V4L2_CID_HFLIP is called with val 0?
> 

Fixed in next release.

> > +                       ret = ov02a10_set_ctrl_hflip(ov02a10, ctrl->val);
> > +               break;
> > +       case V4L2_CID_VFLIP:
> > +               if (ov02a10->streaming)
> > +                       return -EBUSY;
> > +               if (ctrl->val)
> 
> ditto
> 

Fixed in next release.

> > +                       ret = ov02a10_set_ctrl_vflip(ov02a10, ctrl->val);
> > +               break;
> > +       default:
> > +               dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n",
> > +                        __func__, ctrl->id, ctrl->val);
> > +               ret = -EINVAL;
> > +               break;
> > +       };
> > +
> > +       pm_runtime_put(&client->dev);
> > +
> > +       return ret;
> > +}
> > +
> > +static const struct v4l2_subdev_video_ops ov02a10_video_ops = {
> > +       .s_stream = ov02a10_s_stream,
> > +};
> > +
> > +static const struct v4l2_subdev_pad_ops ov02a10_pad_ops = {
> > +       .enum_mbus_code = ov02a10_enum_mbus_code,
> > +       .enum_frame_size = ov02a10_enum_frame_sizes,
> > +       .get_fmt = ov02a10_get_fmt,
> > +       .set_fmt = ov02a10_set_fmt,
> > +};
> > +
> > +static const struct v4l2_subdev_ops ov02a10_subdev_ops = {
> > +       .video  = &ov02a10_video_ops,
> > +       .pad    = &ov02a10_pad_ops,
> > +};
> > +
> > +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
> > +static const struct v4l2_subdev_internal_ops ov02a10_internal_ops = {
> > +       .open = ov02a10_open,
> > +};
> > +#endif
> > +
> > +static const struct v4l2_ctrl_ops ov02a10_ctrl_ops = {
> > +       .s_ctrl = ov02a10_set_ctrl,
> > +};
> > +
> > +static int ov02a10_initialize_controls(struct ov02a10 *ov02a10)
> > +{
> > +       const struct ov02a10_mode *mode;
> > +       struct v4l2_ctrl_handler *handler;
> > +       struct v4l2_ctrl *ctrl;
> > +       u64 exposure_max;
> > +       u32 pixel_rate, h_blank;
> > +       int ret;
> > +
> > +       handler = &ov02a10->ctrl_handler;
> > +       mode = ov02a10->cur_mode;
> > +       ret = v4l2_ctrl_handler_init(handler, 8);
> > +       if (ret)
> > +               return ret;
> > +       handler->lock = &ov02a10->mutex;
> > +
> > +       ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ,
> > +                                     0, 0, link_freq_menu_items);
> > +       if (ctrl)
> > +               ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
> > +
> > +       pixel_rate = (link_freq_menu_items[0] * 2 * ov02a10_LANES) /
> > +                    ov02a10_BITS_PER_SAMPLE;
> > +       v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE,
> > +                         0, pixel_rate, 1, pixel_rate);
> > +
> > +       h_blank = mode->hts_def - mode->width;
> > +       ov02a10->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
> > +                                           h_blank, h_blank, 1, h_blank);
> > +       if (ov02a10->hblank)
> > +               ov02a10->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
> > +
> > +       ov02a10->vblank = v4l2_ctrl_new_std(handler, &ov02a10_ctrl_ops,
> > +                                           V4L2_CID_VBLANK, mode->vts_def -
> > +                                           mode->height,
> > +                                           ov02a10_VTS_MAX - mode->height, 1,
> > +                                           mode->vts_def - mode->height);
> > +
> > +       exposure_max = mode->vts_def - 4;
> > +       ov02a10->exposure = v4l2_ctrl_new_std(handler, &ov02a10_ctrl_ops,
> > +                                             V4L2_CID_EXPOSURE,
> > +                                             ov02a10_EXPOSURE_MIN,
> > +                                             exposure_max,
> > +                                             ov02a10_EXPOSURE_STEP,
> > +                                             mode->exp_def);
> > +
> > +       ov02a10->anal_gain = v4l2_ctrl_new_std(handler, &ov02a10_ctrl_ops,
> > +                                              V4L2_CID_ANALOGUE_GAIN,
> > +                                              ov02a10_GAIN_MIN,
> > +                                              ov02a10_GAIN_MAX,
> > +                                              ov02a10_GAIN_STEP,
> > +                                              ov02a10_GAIN_DEFAULT);
> > +
> > +       ov02a10->test_pattern =
> > +          v4l2_ctrl_new_std_menu_items(handler,
> > +                                       &ov02a10_ctrl_ops,
> > +                                       V4L2_CID_TEST_PATTERN,
> > +                                       ARRAY_SIZE(ov02a10_test_pattern_menu) -
> > +                                       1, 0, 0, ov02a10_test_pattern_menu);
> > +
> > +       if (handler->error) {
> > +               ret = handler->error;
> > +               dev_err(&ov02a10->client->dev,
> > +                       "Failed to init controls(%d)\n", ret);
> > +               goto err_free_handler;
> > +       }
> > +
> > +       ov02a10->subdev.ctrl_handler = handler;
> > +
> > +       return 0;
> > +
> > +err_free_handler:
> > +       v4l2_ctrl_handler_free(handler);
> > +
> > +       return ret;
> > +}
> > +
> > +static int ov02a10_check_sensor_id(struct ov02a10 *ov02a10,
> > +                                  struct i2c_client *client)
> > +{
> > +       struct device *dev = &ov02a10->client->dev;
> > +       u8 pid = 0;
> > +       u8 ver = 0;
> > +       int ret;
> > +
> > +       /* Check sensor revision */
> > +       ret = ov02a10_read_reg(client, OV02A10_REG_CHIP_ID_H, &pid);
> > +       if (!ret)
> 
> I'd change the error handling all over this function.
> 
> if (ret)
>    return 0;
> 

Fixed in next release.

> > +               ret = ov02a10_read_reg(client, OV02A10_REG_CHIP_ID_L, &ver);
> > +
> > +       if (!ret) {
> 
> if (ret)
>     return 0;
> 

Fixed in next release.

> > +               unsigned short id;
> > +
> > +               id = OV02A10_ID(pid, ver);
> > +               dev_info(dev, "ov02a10_sensor id(%04x)\n", id);
> 
> Drop this line, no need to print the id twice.
> 

Fixed in next release.

> > +               if (id != CHIP_ID) {
> > +                       dev_err(dev, "Unexpected sensor id(%04x), ret(%d)\n",
> > +                               id, ret);
> 
> ret always == 0 here, no need to print it.
> 

Fixed in next release.

> > +                       return ret;
> > +               }
> > +               dev_info(dev, "Detected OV%04X sensor\n", id);
> > +       }
> > +
> > +       return 0;
> > +}
> > +
> > +static int ov02a10_configure_regulators(struct ov02a10 *ov02a10)
> > +{
> > +       int i;
> > +
> > +       for (i = 0; i < ov02a10_NUM_SUPPLIES; i++)
> > +               ov02a10->supplies[i].supply = ov02a10_supply_names[i];
> > +
> > +       return devm_regulator_bulk_get(&ov02a10->client->dev,
> > +                                      ov02a10_NUM_SUPPLIES,
> > +                                      ov02a10->supplies);
> > +}
> > +
> > +static int ov02a10_probe(struct i2c_client *client,
> > +                        const struct i2c_device_id *id)
> > +{
> > +       struct device *dev = &client->dev;
> > +       struct ov02a10 *ov02a10;
> > +       u32 rotation;
> > +       int ret;
> > +
> > +       dev_info(dev, "ov02a10 probe ++\n");
> 
> Drop this
> 

Could we use dev_dbg to replace of dev_info?

> > +       ov02a10 = devm_kzalloc(dev, sizeof(*ov02a10), GFP_KERNEL);
> > +       if (!ov02a10)
> > +               return -ENOMEM;
> > +
> > +       ov02a10->client = client;
> > +       ov02a10->cur_mode = &supported_modes[0];
> > +
> > +       /* optional indication of physical rotation of sensor */
> > +       ret = fwnode_property_read_u32(dev_fwnode(dev), "rotation",
> > +                                      &rotation);
> > +       if (!ret) {
> > +               switch (rotation) {
> > +               case 180:
> > +                       ov02a10->upside_down = true;
> > +                       /* fall through */
> 
> Just break here.
> 

Fixed in next release.

> > +               case 0:
> > +                       break;
> > +               default:
> > +                       dev_warn(dev, "%u degrees rotation is not supported, ignoring...\n",
> > +                                rotation);
> > +               }
> > +       }
> > +
> > +       ov02a10->xvclk = devm_clk_get(dev, "xvclk");
> > +       if (IS_ERR(ov02a10->xvclk)) {
> > +               dev_err(dev, "Failed to get xvclk\n");
> > +               return -EINVAL;
> > +       }
> > +       ret = clk_set_rate(ov02a10->xvclk, ov02a10_XVCLK_FREQ);
> > +       if (ret < 0) {
> > +               dev_err(dev, "Failed to set xvclk rate (24MHz)\n");
> > +               return ret;
> > +       }
> > +       if (clk_get_rate(ov02a10->xvclk) != ov02a10_XVCLK_FREQ)
> > +               dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n");
> > +
> > +       ov02a10->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW);
> > +       if (IS_ERR(ov02a10->pwdn_gpio)) {
> > +               dev_err(dev, "Failed to get powerdown-gpios\n");
> > +               return -EINVAL;
> > +       }
> > +
> > +       ov02a10->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
> > +       if (IS_ERR(ov02a10->reset_gpio)) {
> > +               dev_err(dev, "Failed to get reset-gpios\n");
> > +               return -EINVAL;
> > +       }
> > +
> > +       ret = ov02a10_configure_regulators(ov02a10);
> > +       if (ret) {
> > +               dev_err(dev, "Failed to get power regulators\n");
> > +               return ret;
> > +       }
> > +
> > +       mutex_init(&ov02a10->mutex);
> > +       v4l2_i2c_subdev_init(&ov02a10->subdev, client, &ov02a10_subdev_ops);
> > +       ret = ov02a10_initialize_controls(ov02a10);
> > +       if (ret) {
> > +               dev_err(dev, "Failed to initialize controls\n");
> > +               goto err_destroy_mutex;
> > +       }
> > +
> > +       ret = __ov02a10_power_on(ov02a10);
> > +       if (ret) {
> > +               dev_err(dev, "Failed to power on\n");
> 
> No need to print an error message, __ov02a10_power_on already does it.
> 

Fixed in next release.

> > +               goto err_free_handler;
> > +       }
> > +
> > +       ret = ov02a10_check_sensor_id(ov02a10, client);
> > +       if (ret) {
> > +               dev_err(dev, "Failed to detect id, go to power off\n");
> 
> No need to print an error message here, check_sensor_id already does it.
> 

Fixed in next release.

> > +               goto err_power_off;
> > +       }
> > +
> > +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
> > +       ov02a10->subdev.internal_ops = &ov02a10_internal_ops;
> > +       ov02a10->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
> > +#endif
> > +#if defined(CONFIG_MEDIA_CONTROLLER)
> > +       ov02a10->pad.flags = MEDIA_PAD_FL_SOURCE;
> > +       ov02a10->subdev.entity.function = MEDIA_ENT_F_CAM_SENSOR;
> > +       ret = media_entity_pads_init(&ov02a10->subdev.entity, 1, &ov02a10->pad);
> > +       if (ret < 0) {
> > +               dev_err(dev, "Failed init pads\n");
> > +               goto err_power_off;
> > +       }
> > +#endif
> > +
> > +       ret = v4l2_async_register_subdev(&ov02a10->subdev);
> > +       if (ret) {
> > +               dev_err(dev, "v4l2 async register subdev failed\n");
> > +               goto err_clean_entity;
> > +       }
> > +
> > +       pm_runtime_set_active(dev);
> > +       pm_runtime_enable(dev);
> > +       pm_runtime_idle(dev);
> > +       dev_info(dev, "ov02a10 probe --\n");
> 
> Drop this.
> 

Could we use dev_dbg to replace of dev_info?

> > +
> > +       return 0;
> > +
> > +err_clean_entity:
> > +#if defined(CONFIG_MEDIA_CONTROLLER)
> > +       media_entity_cleanup(&ov02a10->subdev.entity);
> > +#endif
> > +err_power_off:
> > +       __ov02a10_power_off(ov02a10);
> > +err_free_handler:
> > +       v4l2_ctrl_handler_free(&ov02a10->ctrl_handler);
> > +err_destroy_mutex:
> > +       mutex_destroy(&ov02a10->mutex);
> > +
> > +       return ret;
> > +}
> > +
> > +static int ov02a10_remove(struct i2c_client *client)
> > +{
> > +       struct v4l2_subdev *sd = i2c_get_clientdata(client);
> > +       struct ov02a10 *ov02a10 = to_ov02a10(sd);
> > +
> > +       v4l2_async_unregister_subdev(sd);
> > +#if defined(CONFIG_MEDIA_CONTROLLER)
> > +       media_entity_cleanup(&sd->entity);
> > +#endif
> > +       v4l2_ctrl_handler_free(&ov02a10->ctrl_handler);
> > +       mutex_destroy(&ov02a10->mutex);
> > +
> > +       pm_runtime_disable(&client->dev);
> > +       if (!pm_runtime_status_suspended(&client->dev))
> > +               __ov02a10_power_off(ov02a10);
> > +       pm_runtime_set_suspended(&client->dev);
> > +
> > +       return 0;
> > +}
> > +
> > +#if IS_ENABLED(CONFIG_OF)
> > +static const struct of_device_id ov02a10_of_match[] = {
> > +       { .compatible = "ovti,ov02a10" },
> > +       {},
> > +};
> > +MODULE_DEVICE_TABLE(of, ov02a10_of_match);
> > +#endif
> > +
> > +static struct i2c_driver ov02a10_i2c_driver = {
> > +       .driver = {
> > +               .name = "ov02a10",
> > +               .pm = &ov02a10_pm_ops,
> > +               .of_match_table = of_match_ptr(ov02a10_of_match),
> > +       },
> > +       .probe          = &ov02a10_probe,
> > +       .remove         = &ov02a10_remove,
> > +};
> > +
> > +module_i2c_driver(ov02a10_i2c_driver);
> > +
> > +MODULE_AUTHOR("Dongchun Zhu <dongchun.zhu@mediatek.com>");
> > +MODULE_DESCRIPTION("OmniVision OV02A10 sensor driver");
> > +MODULE_LICENSE("GPL v2");
> > --
> > 2.9.2
> >
> >
> > _______________________________________________
> > Linux-mediatek mailing list
> > Linux-mediatek@lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-mediatek



  reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-23 10:22 [PATCH 0/3] media: suppport ov02a10 " dongchun.zhu
2019-05-23 10:22 ` [PATCH 1/3] media: i2c: ov02a10: Add ov02a10 camera " dongchun.zhu
2019-05-26  8:53   ` Nicolas Boichat
2019-06-13  2:44     ` Dongchun Zhu [this message]
2019-05-28  6:20   ` Bingbu Cao
2019-06-13  3:22     ` Dongchun Zhu
2019-05-31 17:03   ` Sakari Ailus
2019-06-11 14:09     ` Dongchun Zhu
2019-06-26  9:58       ` Sakari Ailus
2019-05-23 10:22 ` [PATCH 2/3] media: i2c: ov02a10: Add CONFIG_VIDEO_OV02A10 dongchun.zhu
2019-05-23 10:22 ` [PATCH 3/3] media: dt-bindings: media: i2c: Add bindings for ov02a10 dongchun.zhu
2019-05-31 16:16   ` Sakari Ailus
2019-06-13  3:30     ` Dongchun Zhu
2019-06-14 16:56     ` Rob Herring

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