Hi Laurent and Sakari, Thank you for your review, > Hi Bogdan, > > On Fri, Sep 11, 2020 at 01:32:39PM +0000, Togorean, Bogdan wrote: > > > On Thu, Sep 10, 2020 at 07:24:06PM +0300, Bogdan Togorean wrote: > > > > The ADDI9036 is a complete, 45 MHz, front-end solution for charge > > > > coupled device (CCD) time of flight (TOF) imaging applications. > > > > > > > > It has 2-lane MIPI CSI-2 RAW12 data output and i2c control interface. > > > > > > > > The programming of calibration and firmware is performed by userspace > > > > SDK through CID_USER class IOCTLs. > > > > > > I'm afraid that's not acceptable. The firmware should be loaded using > > > the Linux kernel firmware API. As for calibration, is it static data ? > > > How is it generated ? > > > > Calibration data is static data, generated at production and stored on and > EEPROM > > memory on camera board. The camera board consists mainly of ADDI9036 > processor > > + CCD image sensor + EEPROM. > > > > The firmware is a set of (address, data) tuples that are written via I2C. > > Is it a firmware in the sense of software running on the ADDI9036, or is > it a device configuration to be loaded in registers ? > Actually what we call "firmware" is a combination of both. The binary blob that gets written contains ToF processor instructions that end in a RAM memory internal to ADDI9036 and also register configurations. I am working on a V2 that uses firmware API and NVMEM subsystem for EEPROM stored data. > > We want this driver to be a generic one and support all implementations > > of ADDI9036 ToF processor. Now the problem is that some implementations > > store firmware + calibration on external EEPROM and some store just > calibration > > data on EEPROM and firmware is loaded from a file stored in SDK. With the help > > of the 2 custom controls we move the camera model detection, firmware > > and calibration fetching from driver to user space SDK. > > > > Also an important point is that the ToF processor has 3 operating modes > > (near, medium and far). At each mode change a new set of firmware + > > calibration data is loaded into ADDI9036 chip. If we move the firmware loading > > in driver we would still need a custom enumeration control to select the > working mode. > > > > > > Signed-off-by: Bogdan Togorean <bogdan.togorean@xxxxxxxxxx> > > > > --- > > > > MAINTAINERS | 10 + > > > > drivers/media/i2c/Kconfig | 14 + > > > > drivers/media/i2c/Makefile | 1 + > > > > drivers/media/i2c/addi9036.c | 673 > +++++++++++++++++++++++++++++ > > > > include/uapi/linux/v4l2-controls.h | 6 + > > > > 5 files changed, 704 insertions(+) > > > > create mode 100644 drivers/media/i2c/addi9036.c > > > > > > > > diff --git a/MAINTAINERS b/MAINTAINERS > > > > index b5cfab015bd6..fb03ad9ca920 100644 > > > > --- a/MAINTAINERS > > > > +++ b/MAINTAINERS > > > > @@ -477,6 +477,16 @@ W: http://wiki.analog.com/AD7879 > > > > W: http://ez.analog.com/community/linux-device-drivers > > > > F: drivers/input/touchscreen/ad7879.c > > > > > > > > +ADDI9036 TOF FRONTEND DRIVER > > > > +M: Bogdan Togorean <bogdan.togorean@xxxxxxxxxx> > > > > +L: linux-media@xxxxxxxxxxxxxxx > > > > +S: Supported > > > > +W: https://www.analog.com/en/products/addi9036.html > > > > +W: http://ez.analog.com/community/linux-device-drivers > > > > +T: git git://linuxtv.org/media_tree.git > > > > +F: > Documentation/devicetree/bindings/media/i2c/adi,addi9036.yaml > > > > +F: drivers/media/i2c/addi9036.c > > > > + > > > > ADDRESS SPACE LAYOUT RANDOMIZATION (ASLR) > > > > M: Jiri Kosina <jikos@xxxxxxxxxx> > > > > S: Maintained > > > > diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig > > > > index c7ba76fee599..087dd307505d 100644 > > > > --- a/drivers/media/i2c/Kconfig > > > > +++ b/drivers/media/i2c/Kconfig > > > > @@ -725,6 +725,20 @@ config VIDEO_APTINA_PLL > > > > config VIDEO_SMIAPP_PLL > > > > tristate > > > > > > > > +config VIDEO_ADDI9036 > > > > + tristate "Analog Devices ADDI9036 ToF front-end support" > > > > + depends on I2C && VIDEO_V4L2 > > > > + select MEDIA_CONTROLLER > > > > + select VIDEO_V4L2_SUBDEV_API > > > > + select V4L2_FWNODE > > > > + select REGMAP_I2C > > > > + help > > > > + This is a Video4Linux2 driver for Analog Devices ADDI9036 > > > > + Time of Flight front-end. > > > > + > > > > + To compile this driver as a module, choose M here: the > > > > + module will be called addi9036. > > > > + > > > > config VIDEO_HI556 > > > > tristate "Hynix Hi-556 sensor support" > > > > depends on I2C && VIDEO_V4L2 > > > > diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile > > > > index f0a77473979d..631a7c7612ca 100644 > > > > --- a/drivers/media/i2c/Makefile > > > > +++ b/drivers/media/i2c/Makefile > > > > @@ -26,6 +26,7 @@ obj-$(CONFIG_VIDEO_AK7375) += ak7375.o > > > > obj-$(CONFIG_VIDEO_DW9714) += dw9714.o > > > > obj-$(CONFIG_VIDEO_DW9768) += dw9768.o > > > > obj-$(CONFIG_VIDEO_DW9807_VCM) += dw9807-vcm.o > > > > +obj-$(CONFIG_VIDEO_ADDI9036) += addi9036.o > > > > obj-$(CONFIG_VIDEO_ADV7170) += adv7170.o > > > > obj-$(CONFIG_VIDEO_ADV7175) += adv7175.o > > > > obj-$(CONFIG_VIDEO_ADV7180) += adv7180.o > > > > diff --git a/drivers/media/i2c/addi9036.c b/drivers/media/i2c/addi9036.c > > > > new file mode 100644 > > > > index 000000000000..76c3444058dc > > > > --- /dev/null > > > > +++ b/drivers/media/i2c/addi9036.c > > > > @@ -0,0 +1,673 @@ > > > > +// SPDX-License-Identifier: GPL-2.0 > > > > +/* > > > > + * Driver for the Analog Devices ADDI9036 ToF front-end. > > > > + * > > > > + * Copyright (C) 2019-2020 Analog Devices, All Rights Reserved. > > > > + * > > > > + */ > > > > + > > > > +#include <linux/device.h> > > > > +#include <linux/gpio/consumer.h> > > > > +#include <linux/i2c.h> > > > > +#include <linux/init.h> > > > > +#include <linux/module.h> > > > > +#include <linux/mutex.h> > > > > +#include <linux/of.h> > > > > +#include <linux/of_graph.h> > > > > +#include <linux/regmap.h> > > > > +#include <linux/slab.h> > > > > +#include <linux/types.h> > > > > +#include <linux/version.h> > > > > +#include <media/v4l2-ctrls.h> > > > > +#include <media/v4l2-fwnode.h> > > > > +#include <media/v4l2-subdev.h> > > > > + > > > > +struct addi9036_mode_info { > > > > + u32 width; > > > > + u32 height; > > > > + u32 pixel_rate; > > > > + u32 link_freq_idx; > > > > +}; > > > > + > > > > +struct addi9036 { > > > > + struct regmap *regmap; > > > > + struct device *dev; > > > > + struct v4l2_subdev sd; > > > > + struct media_pad pad; > > > > + struct v4l2_fwnode_endpoint ep; > > > > + struct v4l2_mbus_framefmt fmt; > > > > + struct v4l2_rect crop; > > > > + > > > > + const struct addi9036_mode_info *current_mode; > > > > + > > > > + struct v4l2_ctrl_handler ctrls; > > > > + struct v4l2_ctrl *pixel_rate; > > > > + struct v4l2_ctrl *link_freq; > > > > + > > > > + /* lock to protect power state */ > > > > + struct mutex power_lock; > > > > + int power_count; > > > > + > > > > + struct gpio_desc *rst_gpio; > > > > + > > > > + /* controls */ > > > > + struct v4l2_ctrl *set_chip_config; > > > > + struct v4l2_ctrl *reg_read; > > > > +}; > > > > + > > > > +static inline struct addi9036 *to_addi9036(struct v4l2_subdev *sd) > > > > +{ > > > > + return container_of(sd, struct addi9036, sd); > > > > +} > > > > + > > > > +#define V4L2_CID_AD_DEV_SET_CHIP_CONFIG_QUERY > (V4L2_CID_USER_ADDI9036_BASE + 0) > > > > +#define V4L2_CID_AD_DEV_REG_READ_QUERY > (V4L2_CID_USER_ADDI9036_BASE + 1) > > > > + > > > > +static const struct reg_sequence addi9036_powerup_setting[] = { > > > > + { 0xc4c0, 0x001c }, > > > > + { 0xc4c3, 0x001c }, > > > > + { 0xc4d7, 0x0000 }, > > > > + { 0xc4d5, 0x0002 }, > > > > + { 0xc4da, 0x0001 }, > > > > + { 0xc4f0, 0x0000 }, > > > > + { 0xc427, 0x0003 }, > > > > + { 0xc427, 0x0001 }, > > > > + { 0xc427, 0x0000 }, > > > > + { 0xc426, 0x0030 }, > > > > + { 0xc426, 0x0010 }, > > > > + { 0xc426, 0x0000 }, > > > > + { 0xc423, 0x0080 }, > > > > + { 0xc431, 0x0080 }, > > > > + { 0x4001, 0x0007 }, > > > > + { 0x7c22, 0x0004 } > > > > +}; > > > > + > > > > +static const struct reg_sequence addi9036_powerdown_setting[] = { > > > > + { 0xc022, 0x0001 }, > > > > + { 0x4001, 0x0006 }, > > > > + { 0x7c22, 0x0004 }, > > > > + { 0xc431, 0x0082 }, > > > > + { 0xc423, 0x0000 }, > > > > + { 0xc426, 0x0020 }, > > > > + { 0xc427, 0x0002 }, > > > > + { 0xc4c0, 0x003c }, > > > > + { 0xc4c3, 0x003c }, > > > > + { 0xc4d5, 0x0003 }, > > > > + { 0xc4da, 0x0000 }, > > > > + { 0xc4d7, 0x0001 }, > > > > + { 0xc4f0, 0x0001 } > > > > +}; > > > > + > > > > +static const s64 link_freq_tbl[] = { > > > > + 110529000, > > > > + 221184000, > > > > +}; > > > > + > > > > +/* Elements of the structure must be ordered ascending by width & height > */ > > > > +static const struct addi9036_mode_info addi9036_mode_info_data[] = { > > > > + { > > > > + .width = 640, > > > > + .height = 480, > > > > + .pixel_rate = 36864000, > > > > + .link_freq_idx = 0 /* an index in link_freq_tbl[] */ > > > > + }, > > > > + { > > > > + .width = 640, > > > > + .height = 960, > > > > + .pixel_rate = 73728000, > > > > + .link_freq_idx = 1 /* an index in link_freq_tbl[] */ > > > > + }, > > > > +}; > > > > + > > > > +static bool addi9306_readable_register(struct device *dev, unsigned int > reg) > > > > +{ > > > > + if (((reg >= 0x4000) && (reg <= 0x6FFF)) || > > > > + ((reg >= 0x7C00) && (reg <= 0x7FFF)) || > > > > + ((reg >= 0xC000) && (reg <= 0xC200)) || > > > > + ((reg >= 0xC300) && (reg <= 0xC6BF))) > > > > + return true; > > > > + else > > > > + return false; > > > > +} > > > > + > > > > +static bool addi9306_writeable_register(struct device *dev, unsigned int > reg) > > > > +{ > > > > + if (((reg >= 0x4000) && (reg <= 0x6FFF)) || > > > > + ((reg >= 0x7C00) && (reg <= 0x7FFF)) || > > > > + ((reg >= 0xC000) && (reg <= 0xC113)) || > > > > + ((reg >= 0xC300) && (reg <= 0xC7FF))) > > > > + return true; > > > > + else > > > > + return false; > > > > +} > > > > + > > > > +static const struct regmap_config addi9036_i2c_regmap_config = { > > > > + .reg_bits = 16, > > > > + .val_bits = 16, > > > > + > > > > + .max_register = 0xC7FF, > > > > + .writeable_reg = addi9306_writeable_register, > > > > + .readable_reg = addi9306_readable_register, > > > > + .cache_type = REGCACHE_NONE, > > > > +}; > > > > + > > > > +static int addi9036_set_power_on(struct addi9036 *addi9036) > > > > +{ > > > > + int ret; > > > > + > > > > + if (addi9036->rst_gpio) > > > > + gpiod_set_value_cansleep(addi9036->rst_gpio, 0); > > > > + > > > > + ret = regmap_register_patch(addi9036->regmap, > addi9036_powerup_setting, > > > > + ARRAY_SIZE(addi9036_powerup_setting)); > > > > + if (ret) > > > > + dev_err(addi9036->dev, "Could not set power up registers\n"); > > > > + > > > > + return ret; > > > > +} > > > > + > > > > +static int addi9036_set_power_off(struct addi9036 *addi9036) > > > > +{ > > > > + int ret; > > > > + > > > > + ret = regmap_register_patch(addi9036->regmap, > > > > + addi9036_powerdown_setting, > > > > + ARRAY_SIZE(addi9036_powerdown_setting)); > > > > + if (ret) > > > > + dev_err(addi9036->dev, "could not set power down > registers\n"); > > > > + > > > > + if (addi9036->rst_gpio) > > > > + gpiod_set_value_cansleep(addi9036->rst_gpio, 1); > > > > + > > > > + return ret; > > > > +} > > > > + > > > > +static int addi9036_s_power(struct v4l2_subdev *sd, int on) > > > > +{ > > > > + struct addi9036 *addi9036 = to_addi9036(sd); > > > > + int ret = 0; > > > > + > > > > + mutex_lock(&addi9036->power_lock); > > > > + > > > > + dev_dbg(addi9036->dev, "s_power: %d\n", on); > > > > + > > > > + /* If the power count is modified from 0 to != 0 or from != 0 to 0, > > > > + * update the power state. > > > > + */ > > > > + if (addi9036->power_count == !on) { > > > > + if (on) > > > > + ret = addi9036_set_power_on(addi9036); > > > > + else > > > > + ret = addi9036_set_power_off(addi9036); > > > > + } > > > > + > > > > + if (!ret) { > > > > + /* Update the power count. */ > > > > + addi9036->power_count += on ? 1 : -1; > > > > + WARN(addi9036->power_count < 0, "Unbalanced power > count\n"); > > > > + WARN(addi9036->power_count > 1, "Duplicated s_power > call\n"); > > > > + } > > > > + > > > > + mutex_unlock(&addi9036->power_lock); > > > > + > > > > + return ret; > > > > +} > > > > + > > > > +static int addi9036_set_chip_config(struct addi9036 *addi9036, > > > > + struct v4l2_ctrl *ctrl) > > > > +{ > > > > + int index; > > > > + unsigned short *reg, *val; > > > > + > > > > + reg = (unsigned short *)(ctrl->p_new.p_u16); > > > > + val = (unsigned short *)(ctrl->p_new.p_u16 + 1); > > > > + > > > > + for (index = 0; index < ctrl->elems; index += 2) { > > > > + regmap_write(addi9036->regmap, *reg, *val); > > > > + reg += 2; > > > > + val += 2; > > > > + } > > > > + > > > > + return 0; > > > > +} > > > > + > > > > +static int addi9036_s_ctrl(struct v4l2_ctrl *ctrl) > > > > +{ > > > > + struct addi9036 *addi9036 = container_of(ctrl->handler, > > > > + struct addi9036, ctrls); > > > > + int ret = 0; > > > > + unsigned int val; > > > > + > > > > + switch (ctrl->id) { > > > > + case V4L2_CID_AD_DEV_SET_CHIP_CONFIG_QUERY: > > > > + ret = addi9036_set_chip_config(addi9036, ctrl); > > > > + break; > > > > + case V4L2_CID_AD_DEV_REG_READ_QUERY: > > > > + ret = regmap_read(addi9036->regmap, *(u16 *)(ctrl- > > > >p_new.p_u16), > > > > + &val); > > > > + if (ret) > > > > + dev_warn(addi9036->dev, > > > > + "could not read from register\n"); > > > > + else > > > > + *(u16 *)(ctrl->p_new.p_u16) = val; > > > > + break; > > > > + case V4L2_CID_PIXEL_RATE: > > > > + case V4L2_CID_LINK_FREQ: > > > > + break; > > > > + default: > > > > + dev_err(addi9036->dev, "%s > Unhandled: %x param=%x\n", > > > > + __func__, ctrl->id, ctrl->val); > > > > + ret = -EINVAL; > > > > + break; > > > > + } > > > > + > > > > + return ret; > > > > +} > > > > + > > > > +static const struct v4l2_ctrl_ops addi9036_ctrl_ops = { > > > > + .s_ctrl = addi9036_s_ctrl, > > > > +}; > > > > + > > > > +static const struct v4l2_ctrl_config addi9036_ctrl_chip_config = { > > > > + .ops = &addi9036_ctrl_ops, > > > > + .id = V4L2_CID_AD_DEV_SET_CHIP_CONFIG_QUERY, > > > > + .name = "chip_config", > > > > + .type = V4L2_CTRL_TYPE_U16, > > > > + .def = 0xFF, > > > > + .min = 0x00, > > > > + .max = 0xFFFF, > > > > + .step = 1, > > > > + .dims = { 2048 }, > > > > + .elem_size = 2 > > > > +}; > > > > + > > > > +static const struct v4l2_ctrl_config addi9036_ctrl_reg_read = { > > > > + .ops = &addi9036_ctrl_ops, > > > > + .id = V4L2_CID_AD_DEV_REG_READ_QUERY, > > > > + .name = "reg_read", > > > > + .type = V4L2_CTRL_TYPE_U16, > > > > + .def = 0, > > > > + .min = 0x00, > > > > + .max = 0xFFFF, > > > > + .step = 1 > > > > +}; > > > > + > > > > +static int addi9036_enum_mbus_code(struct v4l2_subdev *sd, > > > > + struct v4l2_subdev_pad_config *cfg, > > > > + struct v4l2_subdev_mbus_code_enum *code) > > > > +{ > > > > + if (code->index > 0) > > > > + return -EINVAL; > > > > + > > > > + code->code = MEDIA_BUS_FMT_SBGGR12_1X12; > > > > + > > > > + return 0; > > > > +} > > > > + > > > > +static int addi9036_enum_frame_size(struct v4l2_subdev *subdev, > > > > + struct v4l2_subdev_pad_config *cfg, > > > > + struct v4l2_subdev_frame_size_enum *fse) > > > > +{ > > > > + if (fse->code != MEDIA_BUS_FMT_SBGGR12_1X12) > > > > + return -EINVAL; > > > > + > > > > + if (fse->index >= ARRAY_SIZE(addi9036_mode_info_data)) > > > > + return -EINVAL; > > > > + > > > > + fse->min_width = addi9036_mode_info_data[fse->index].width; > > > > + fse->max_width = addi9036_mode_info_data[fse->index].width; > > > > + fse->min_height = addi9036_mode_info_data[fse->index].height; > > > > + fse->max_height = addi9036_mode_info_data[fse->index].height; > > > > + > > > > + return 0; > > > > +} > > > > + > > > > +static struct v4l2_mbus_framefmt * > > > > +addi9036_get_pad_format(struct addi9036 *addi9036, > > > > + struct v4l2_subdev_pad_config *cfg, > > > > + unsigned int pad, > > > > + enum v4l2_subdev_format_whence which) > > > > +{ > > > > + switch (which) { > > > > + case V4L2_SUBDEV_FORMAT_TRY: > > > > + return v4l2_subdev_get_try_format(&addi9036->sd, cfg, pad); > > > > + case V4L2_SUBDEV_FORMAT_ACTIVE: > > > > + return &addi9036->fmt; > > > > + default: > > > > + return NULL; > > > > + } > > > > +} > > > > + > > > > +static int addi9036_get_format(struct v4l2_subdev *sd, > > > > + struct v4l2_subdev_pad_config *cfg, > > > > + struct v4l2_subdev_format *format) > > > > +{ > > > > + struct addi9036 *addi9036 = to_addi9036(sd); > > > > + struct v4l2_mbus_framefmt *pad_format; > > > > + > > > > + pad_format = addi9036_get_pad_format(addi9036, cfg, format->pad, > > > > + format->which); > > > > + > > > > + if (!pad_format) > > > > + return -EINVAL; > > > > + > > > > + format->format = *pad_format; > > > > + > > > > + return 0; > > > > +} > > > > + > > > > +static struct v4l2_rect * > > > > +addi9036_get_pad_crop(struct addi9036 *addi9036, > > > > + struct v4l2_subdev_pad_config *cfg, > > > > + unsigned int pad, enum v4l2_subdev_format_whence which) > > > > +{ > > > > + switch (which) { > > > > + case V4L2_SUBDEV_FORMAT_TRY: > > > > + return v4l2_subdev_get_try_crop(&addi9036->sd, cfg, pad); > > > > + case V4L2_SUBDEV_FORMAT_ACTIVE: > > > > + return &addi9036->crop; > > > > + default: > > > > + return NULL; > > > > + } > > > > +} > > > > + > > > > +static const struct addi9036_mode_info * > > > > +addi9036_find_nearest_mode(unsigned int width, unsigned int height) > > > > +{ > > > > + unsigned int i; > > > > + > > > > + for (i = ARRAY_SIZE(addi9036_mode_info_data) - 1; i > 0; i--) { > > > > + if (addi9036_mode_info_data[i].width <= width && > > > > + addi9036_mode_info_data[i].height <= height) > > > > + break; > > > > + } > > > > + > > > > + return &addi9036_mode_info_data[i]; > > > > +} > > > > + > > > > +static int addi9036_set_format(struct v4l2_subdev *sd, > > > > + struct v4l2_subdev_pad_config *cfg, > > > > + struct v4l2_subdev_format *format) > > > > +{ > > > > + struct addi9036 *addi9036 = to_addi9036(sd); > > > > + struct v4l2_mbus_framefmt *framefmt; > > > > + struct v4l2_rect *crop; > > > > + const struct addi9036_mode_info *new_mode; > > > > + int ret; > > > > + > > > > + dev_dbg(addi9036->dev, "set_fmt: %x %dx%d\n", > > > > + format->format.code, format->format.width, > > > > + format->format.height); > > > > + > > > > + crop = addi9036_get_pad_crop(addi9036, cfg, format->pad, > > > > + format->which); > > > > + > > > > + if (!crop) > > > > + return -EINVAL; > > > > + > > > > + new_mode = addi9036_find_nearest_mode(format->format.width, > > > > + format->format.height); > > > > + crop->width = new_mode->width; > > > > + crop->height = new_mode->height; > > > > + > > > > + if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) { > > > > + ret = v4l2_ctrl_s_ctrl_int64(addi9036->pixel_rate, > > > > + new_mode->pixel_rate); > > > > + if (ret < 0) > > > > + return ret; > > > > + > > > > + ret = v4l2_ctrl_s_ctrl(addi9036->link_freq, > > > > + new_mode->link_freq_idx); > > > > + if (ret < 0) > > > > + return ret; > > > > + > > > > + addi9036->current_mode = new_mode; > > > > + } > > > > + > > > > + framefmt = addi9036_get_pad_format(addi9036, cfg, format->pad, > > > > + format->which); > > > > + > > > > + if (!framefmt) > > > > + return -EINVAL; > > > > + > > > > + framefmt->width = crop->width; > > > > + framefmt->height = crop->height; > > > > + framefmt->code = MEDIA_BUS_FMT_SBGGR12_1X12; > > > > + framefmt->field = V4L2_FIELD_NONE; > > > > + framefmt->colorspace = V4L2_COLORSPACE_SRGB; > > > > + > > > > + format->format = *framefmt; > > > > + > > > > + return 0; > > > > +} > > > > + > > > > +static int addi9036_entity_init_cfg(struct v4l2_subdev *subdev, > > > > + struct v4l2_subdev_pad_config *cfg) > > > > +{ > > > > + struct v4l2_subdev_format fmt = { 0 }; > > > > + > > > > + if (cfg) > > > > + fmt.which = V4L2_SUBDEV_FORMAT_TRY; > > > > + else > > > > + fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; > > > > + > > > > + fmt.format.width = 640; > > > > + fmt.format.height = 960; > > > > + > > > > + addi9036_set_format(subdev, cfg, &fmt); > > > > + > > > > + return 0; > > > > +} > > > > + > > > > +static int addi9036_get_selection(struct v4l2_subdev *sd, > > > > + struct v4l2_subdev_pad_config *cfg, > > > > + struct v4l2_subdev_selection *sel) > > > > +{ > > > > + struct addi9036 *addi9036 = to_addi9036(sd); > > > > + > > > > + if (sel->target != V4L2_SEL_TGT_CROP) > > > > + return -EINVAL; > > > > + > > > > + sel->r = *addi9036_get_pad_crop(addi9036, cfg, sel->pad, sel->which); > > > > + > > > > + return 0; > > > > +} > > > > + > > > > +static int addi9036_s_stream(struct v4l2_subdev *subdev, int enable) > > > > +{ > > > > + struct addi9036 *addi9036 = to_addi9036(subdev); > > > > + > > > > + dev_dbg(addi9036->dev, "stream %d\n", enable); > > > > + > > > > + return 0; > > > > +} > > > > + > > > > +static const struct v4l2_subdev_core_ops addi9036_core_ops = { > > > > + .s_power = addi9036_s_power, > > > > +}; > > > > + > > > > +static const struct v4l2_subdev_video_ops addi9036_video_ops = { > > > > + .s_stream = addi9036_s_stream, > > > > +}; > > > > + > > > > +static const struct v4l2_subdev_pad_ops addi9036_subdev_pad_ops = { > > > > + .init_cfg = addi9036_entity_init_cfg, > > > > + .enum_mbus_code = addi9036_enum_mbus_code, > > > > + .enum_frame_size = addi9036_enum_frame_size, > > > > + .get_fmt = addi9036_get_format, > > > > + .set_fmt = addi9036_set_format, > > > > + .get_selection = addi9036_get_selection, > > > > +}; > > > > + > > > > +static const struct v4l2_subdev_ops addi9036_subdev_ops = { > > > > + .core = &addi9036_core_ops, > > > > + .video = &addi9036_video_ops, > > > > + .pad = &addi9036_subdev_pad_ops, > > > > +}; > > > > + > > > > +static int addi9036_probe(struct i2c_client *client) > > > > +{ > > > > + struct device *dev = &client->dev; > > > > + struct fwnode_handle *endpoint; > > > > + struct addi9036 *addi9036; > > > > + int ret; > > > > + > > > > + dev_dbg(dev, "%s: i2c addr = 0x%x\n", __func__, client->addr); > > > > + > > > > + addi9036 = devm_kzalloc(dev, sizeof(struct addi9036), GFP_KERNEL); > > > > + if (!addi9036) > > > > + return -ENOMEM; > > > > + > > > > + addi9036->dev = dev; > > > > + > > > > + addi9036->regmap = devm_regmap_init_i2c(client, > > > > + &addi9036_i2c_regmap_config); > > > > + if (IS_ERR(addi9036->regmap)) { > > > > + dev_err(dev, "Error initializing i2c regmap\n"); > > > > + return PTR_ERR(addi9036->regmap); > > > > + } > > > > + > > > > + mutex_init(&addi9036->power_lock); > > > > + > > > > + endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), > NULL); > > > > + if (!endpoint) { > > > > + dev_err(dev, "endpoint node not found\n"); > > > > + return -EINVAL; > > > > + } > > > > + > > > > + ret = v4l2_fwnode_endpoint_parse(endpoint, &addi9036->ep); > > > > + if (ret < 0) { > > > > + dev_err(dev, "parsing endpoint node failed\n"); > > > > + return ret; > > > > + } > > > > + fwnode_handle_put(endpoint); > > > > + > > > > + if (addi9036->ep.bus_type != V4L2_MBUS_CSI2_DPHY) { > > > > + dev_err(dev, "invalid bus type, must be MIPI CSI2\n"); > > > > + return -EINVAL; > > > > + } > > > > + > > > > + addi9036->rst_gpio = gpiod_get_optional(dev, "reset", > GPIOD_OUT_HIGH); > > > > + if (IS_ERR(addi9036->rst_gpio)) { > > > > + dev_info(dev, "Unable to get \"reset\" gpio\n"); > > > > + return PTR_ERR(addi9036->rst_gpio); > > > > + } > > > > + > > > > + v4l2_ctrl_handler_init(&addi9036->ctrls, 4); > > > > + > > > > + addi9036->pixel_rate = v4l2_ctrl_new_std(&addi9036->ctrls, > > > > + &addi9036_ctrl_ops, > > > > + V4L2_CID_PIXEL_RATE, > > > > + 1, INT_MAX, 1, 1); > > > > + addi9036->link_freq = v4l2_ctrl_new_int_menu(&addi9036->ctrls, > > > > + &addi9036_ctrl_ops, > > > > + V4L2_CID_LINK_FREQ, > > > > + ARRAY_SIZE( > > > > + link_freq_tbl) - 1, > > > > + 0, link_freq_tbl); > > > > + if (addi9036->link_freq) > > > > + addi9036->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; > > > > + > > > > + addi9036->set_chip_config = v4l2_ctrl_new_custom(&addi9036->ctrls, > > > > + &addi9036_ctrl_chip_config, > > > > + NULL); > > > > + > > > > + addi9036->reg_read = v4l2_ctrl_new_custom(&addi9036->ctrls, > > > > + &addi9036_ctrl_reg_read, > > > > + NULL); > > > > + > > > > + addi9036->sd.ctrl_handler = &addi9036->ctrls; > > > > + > > > > + if (addi9036->ctrls.error) { > > > > + dev_err(dev, "%s: control initialization error %d\n", > > > > + __func__, addi9036->ctrls.error); > > > > + ret = addi9036->ctrls.error; > > > > + goto free_ctrl; > > > > + } > > > > + > > > > + v4l2_i2c_subdev_init(&addi9036->sd, client, &addi9036_subdev_ops); > > > > + addi9036->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; > > > > + addi9036->pad.flags = MEDIA_PAD_FL_SOURCE; > > > > + addi9036->sd.dev = &client->dev; > > > > + addi9036->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; > > > > + > > > > + ret = media_entity_pads_init(&addi9036->sd.entity, 1, &addi9036->pad); > > > > + > > > > + if (ret < 0) { > > > > + dev_err(dev, "could not register media entity\n"); > > > > + goto free_ctrl; > > > > + } > > > > + > > > > + ret = addi9036_s_power(&addi9036->sd, true); > > > > + if (ret < 0) { > > > > + dev_err(dev, "could not power up addi9036\n"); > > > > + goto free_entity; > > > > + } > > > > + > > > > + dev_info(dev, "addi9036 detected at address 0x%02x\n", client->addr); > > > > + > > > > + ret = addi9036_s_power(&addi9036->sd, false); > > > > + if (ret < 0) { > > > > + dev_err(dev, "could not power down addi9036\n"); > > > > + goto free_entity; > > > > + } > > > > + > > > > + addi9036_entity_init_cfg(&addi9036->sd, NULL); > > > > + > > > > + ret = v4l2_async_register_subdev(&addi9036->sd); > > > > + if (ret < 0) > > > > + dev_err(dev, "could not register v4l2 device\n"); > > > > + > > > > + return 0; > > > > + > > > > +free_entity: > > > > + media_entity_cleanup(&addi9036->sd.entity); > > > > +free_ctrl: > > > > + v4l2_ctrl_handler_free(&addi9036->ctrls); > > > > + mutex_destroy(&addi9036->power_lock); > > > > + > > > > + return ret; > > > > +} > > > > + > > > > +static int addi9036_remove(struct i2c_client *client) > > > > +{ > > > > + struct v4l2_subdev *sd = i2c_get_clientdata(client); > > > > + struct addi9036 *addi9036 = to_addi9036(sd); > > > > + > > > > + v4l2_async_unregister_subdev(&addi9036->sd); > > > > + media_entity_cleanup(&addi9036->sd.entity); > > > > + if (addi9036->rst_gpio) > > > > + gpiod_put(addi9036->rst_gpio); > > > > + v4l2_ctrl_handler_free(&addi9036->ctrls); > > > > + mutex_destroy(&addi9036->power_lock); > > > > + > > > > + return 0; > > > > +} > > > > + > > > > +static const struct i2c_device_id addi9036_id[] = { > > > > + { "addi9036", 0 }, > > > > + {} > > > > +}; > > > > +MODULE_DEVICE_TABLE(i2c, addi9036_id); > > > > + > > > > +static const struct of_device_id addi9036_of_match[] = { > > > > + { .compatible = "adi,addi9036" }, > > > > + { /* sentinel */ } > > > > +}; > > > > +MODULE_DEVICE_TABLE(of, addi9036_of_match); > > > > + > > > > +static struct i2c_driver addi9036_i2c_driver = { > > > > + .driver = { > > > > + .of_match_table = addi9036_of_match, > > > > + .name = "addi9036", > > > > + }, > > > > + .probe_new = addi9036_probe, > > > > + .remove = addi9036_remove, > > > > + .id_table = addi9036_id, > > > > +}; > > > > + > > > > +module_i2c_driver(addi9036_i2c_driver); > > > > + > > > > +MODULE_DESCRIPTION("Analog Devices ADDI9036 Camera Driver"); > > > > +MODULE_AUTHOR("Bogdan Togorean"); > > > > +MODULE_LICENSE("GPL v2"); > > > > diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2- > controls.h > > > > index 62271418c1be..f88b56479bc1 100644 > > > > --- a/include/uapi/linux/v4l2-controls.h > > > > +++ b/include/uapi/linux/v4l2-controls.h > > > > @@ -198,6 +198,12 @@ enum v4l2_colorfx { > > > > */ > > > > #define V4L2_CID_USER_ATMEL_ISC_BASE > (V4L2_CID_USER_BASE + 0x10c0) > > > > > > > > +/* > > > > + * The base for the addi9036 driver controls. > > > > + * We reserve 16 controls for this driver. > > > > + */ > > > > +#define V4L2_CID_USER_ADDI9036_BASE > (V4L2_CID_USER_BASE + 0x10e0) > > > > + > > > > /* MPEG-class control IDs */ > > > > /* The MPEG controls are applicable to all codec controls > > > > * and the 'MPEG' part of the define is historical */ > > -- > Regards, > > Laurent Pinchart
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