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Mon, 16 Nov 2020 15:47:52 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1605538073; bh=oYqwvoOp/cdvGLTKC45nL+UveDYKO61NK1UTZ9er30I=; h=Reply-To:Subject:To:Cc:References:From:Date:In-Reply-To:From; b=LNQaCBAUHUwSDDnCsNdGdOAXXCUb5fRgyK19rOwRUgyJWvIbk+/kQooIecMjnX8ro vX1dgIAtxBnYKRkstHrRGcUOhLXoXXGhpZpuAKRu8WJVLIN/4zrOPTvWqQPC/qAYZe kjXtRq4O3sfKw5kE9wtrNvEl+miESUvscc6wLb0U= Reply-To: kieran.bingham+renesas@ideasonboard.com Subject: Re: [PATCH v5 1/8] media: i2c: Add driver for RDACM21 camera module To: Jacopo Mondi , laurent.pinchart+renesas@ideasonboard.com, niklas.soderlund+renesas@ragnatech.se, geert@linux-m68k.org Cc: linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Hyun Kwon , Manivannan Sadhasivam , sergei.shtylyov@gmail.com References: <20201116135305.81319-1-jacopo+renesas@jmondi.org> <20201116135305.81319-2-jacopo+renesas@jmondi.org> From: Kieran Bingham Organization: Ideas on Board Message-ID: Date: Mon, 16 Nov 2020 14:47:49 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201116135305.81319-2-jacopo+renesas@jmondi.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 16/11/2020 13:52, Jacopo Mondi wrote: > The RDACM21 is a GMSL camera supporting 1280x1080 resolution images > developed by IMI based on an Omnivision OV10640 sensor, an Omnivision > OV490 ISP and a Maxim MAX9271 GMSL serializer. > > The driver uses the max9271 library module, to maximize code reuse with > other camera module drivers using the same serializer, such as rdacm20. > > Signed-off-by: Jacopo Mondi > --- > MAINTAINERS | 12 + > drivers/media/i2c/Kconfig | 13 + > drivers/media/i2c/Makefile | 2 + > drivers/media/i2c/rdacm21.c | 595 ++++++++++++++++++++++++++++++++++++ > 4 files changed, 622 insertions(+) > create mode 100644 drivers/media/i2c/rdacm21.c > > diff --git a/MAINTAINERS b/MAINTAINERS > index cef6b6090d76..9a5026fd6788 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -14750,6 +14750,18 @@ F: drivers/media/i2c/max9271.c > F: drivers/media/i2c/max9271.h > F: drivers/media/i2c/rdacm20.c > > +RDACM21 Camera Sensor > +M: Jacopo Mondi > +M: Kieran Bingham > +M: Laurent Pinchart > +M: Niklas Söderlund > +L: linux-media@vger.kernel.org > +S: Maintained > +F: Documentation/devicetree/bindings/media/i2c/rdacm2x-gmsl.yaml > +F: drivers/media/i2c/max9271.c > +F: drivers/media/i2c/max9271.h > +F: drivers/media/i2c/rdacm21.c > + > RDC R-321X SoC > M: Florian Fainelli > S: Maintained > diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig > index c64326ca331c..64f4316d11ad 100644 > --- a/drivers/media/i2c/Kconfig > +++ b/drivers/media/i2c/Kconfig > @@ -1185,6 +1185,19 @@ config VIDEO_RDACM20 > This camera should be used in conjunction with a GMSL > deserialiser such as the MAX9286. > > +config VIDEO_RDACM21 > + tristate "IMI RDACM21 camera support" > + depends on I2C > + select V4L2_FWNODE > + select VIDEO_V4L2_SUBDEV_API > + select MEDIA_CONTROLLER > + help > + This driver supports the IMI RDACM21 GMSL camera, used in > + ADAS systems. > + > + This camera should be used in conjunction with a GMSL > + deserialiser such as the MAX9286. > + > config VIDEO_RJ54N1 > tristate "Sharp RJ54N1CB0C sensor support" > depends on I2C && VIDEO_V4L2 > diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile > index f0a77473979d..f3641b58929d 100644 > --- a/drivers/media/i2c/Makefile > +++ b/drivers/media/i2c/Makefile > @@ -122,6 +122,8 @@ obj-$(CONFIG_VIDEO_IMX355) += imx355.o > obj-$(CONFIG_VIDEO_MAX9286) += max9286.o > rdacm20-camera_module-objs := rdacm20.o max9271.o > obj-$(CONFIG_VIDEO_RDACM20) += rdacm20-camera_module.o > +rdacm21-camera_module-objs := rdacm21.o max9271.o > +obj-$(CONFIG_VIDEO_RDACM21) += rdacm21-camera_module.o > obj-$(CONFIG_VIDEO_ST_MIPID02) += st-mipid02.o > > obj-$(CONFIG_SDR_MAX2175) += max2175.o > diff --git a/drivers/media/i2c/rdacm21.c b/drivers/media/i2c/rdacm21.c > new file mode 100644 > index 000000000000..5f9267e26258 > --- /dev/null > +++ b/drivers/media/i2c/rdacm21.c > @@ -0,0 +1,595 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* > + * IMI RDACM21 GMSL Camera Driver > + * > + * Copyright (C) 2017-2020 Jacopo Mondi > + * Copyright (C) 2017-2019 Kieran Bingham > + * Copyright (C) 2017-2019 Laurent Pinchart > + * Copyright (C) 2017-2019 Niklas Söderlund > + * Copyright (C) 2016 Renesas Electronics Corporation > + * Copyright (C) 2015 Cogent Embedded, Inc. > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +#include > +#include > +#include > +#include "max9271.h" > + > +#define OV10640_ID_LOW 0xa6 > + > +#define OV490_I2C_ADDRESS 0x24 > + > +#define OV490_PAGE_HIGH_REG 0xfffd > +#define OV490_PAGE_LOW_REG 0xfffe > + > +#define OV490_DVP_CTRL3 0x80286009 > + > +#define OV490_ODS_CTRL_FRAME_OUTPUT_EN 0x0c > +#define OV490_ODS_CTRL 0x8029d000 > + > +#define OV490_ID_VAL 0x0490 > +#define OV490_ID(_p, _v) ((((_p) & 0xff) << 8) | ((_v) & 0xff)) > +#define OV490_PID 0x8080300a > +#define OV490_VER 0x8080300b > + > +#define OV490_ISP_HSIZE_LOW 0x80820060 > +#define OV490_ISP_HSIZE_HIGH 0x80820061 > +#define OV490_ISP_VSIZE_LOW 0x80820062 > +#define OV490_ISP_VSIZE_HIGH 0x80820063 > + > +#define OV10640_PIXEL_RATE (55000000) > + > +struct rdacm21_device { > + struct device *dev; > + struct max9271_device *serializer; > + struct i2c_client *isp; > + struct v4l2_subdev sd; > + struct media_pad pad; > + struct v4l2_mbus_framefmt fmt; > + struct v4l2_ctrl_handler ctrls; > + u32 addrs[32]; > + u16 last_page; > +}; > + > +static inline struct rdacm21_device *sd_to_rdacm21(struct v4l2_subdev *sd) > +{ > + return container_of(sd, struct rdacm21_device, sd); > +} > + > +static inline struct rdacm21_device *i2c_to_rdacm21(struct i2c_client *client) > +{ > + return sd_to_rdacm21(i2c_get_clientdata(client)); > +} > + > +static const struct ov490_reg { > + u16 reg; > + u8 val; > +} ov490_regs_wizard[] = { > + {0xfffd, 0x80}, > + {0xfffe, 0x82}, > + {0x0071, 0x11}, > + {0x0075, 0x11}, > + {0xfffe, 0x29}, > + {0x6010, 0x01}, > + /* > + * OV490 EMB line disable in YUV and RAW data, > + * NOTE: EMB line is still used in ISP and sensor > + */ > + {0xe000, 0x14}, > + {0xfffe, 0x28}, > + {0x6000, 0x04}, > + {0x6004, 0x00}, > + /* > + * PCLK polarity - useless due to silicon bug. > + * Use 0x808000bb register instead. > + */ > + {0x6008, 0x00}, > + {0xfffe, 0x80}, > + {0x0091, 0x00}, > + /* bit[3]=0 - PCLK polarity workaround. */ > + {0x00bb, 0x1d}, > + /* Ov490 FSIN: app_fsin_from_fsync */ > + {0xfffe, 0x85}, > + {0x0008, 0x00}, > + {0x0009, 0x01}, > + /* FSIN0 source. */ > + {0x000A, 0x05}, > + {0x000B, 0x00}, > + /* FSIN0 delay. */ > + {0x0030, 0x02}, > + {0x0031, 0x00}, > + {0x0032, 0x00}, > + {0x0033, 0x00}, > + /* FSIN1 delay. */ > + {0x0038, 0x02}, > + {0x0039, 0x00}, > + {0x003A, 0x00}, > + {0x003B, 0x00}, > + /* FSIN0 length. */ > + {0x0070, 0x2C}, > + {0x0071, 0x01}, > + {0x0072, 0x00}, > + {0x0073, 0x00}, > + /* FSIN1 length. */ > + {0x0074, 0x64}, > + {0x0075, 0x00}, > + {0x0076, 0x00}, > + {0x0077, 0x00}, > + {0x0000, 0x14}, > + {0x0001, 0x00}, > + {0x0002, 0x00}, > + {0x0003, 0x00}, > + /* > + * Load fsin0,load fsin1,load other, > + * It will be cleared automatically. > + */ > + {0x0004, 0x32}, > + {0x0005, 0x00}, > + {0x0006, 0x00}, > + {0x0007, 0x00}, > + {0xfffe, 0x80}, > + /* Sensor FSIN. */ > + {0x0081, 0x00}, > + /* ov10640 FSIN enable */ > + {0xfffe, 0x19}, > + {0x5000, 0x00}, > + {0x5001, 0x30}, > + {0x5002, 0x8c}, > + {0x5003, 0xb2}, > + {0xfffe, 0x80}, > + {0x00c0, 0xc1}, > + /* ov10640 HFLIP=1 by default */ > + {0xfffe, 0x19}, > + {0x5000, 0x01}, > + {0x5001, 0x00}, > + {0xfffe, 0x80}, > + {0x00c0, 0xdc}, > +}; > + > +static int ov490_read(struct rdacm21_device *dev, u16 reg, u8 *val) > +{ > + u8 buf[2] = { reg >> 8, reg }; > + int ret; > + > + ret = i2c_master_send(dev->isp, buf, 2); > + if (ret == 2) > + ret = i2c_master_recv(dev->isp, val, 1); > + > + if (ret < 0) { > + dev_dbg(dev->dev, "%s: register 0x%04x read failed (%d)\n", > + __func__, reg, ret); > + return ret; > + } > + > + return 0; > +} > + > +static int ov490_write(struct rdacm21_device *dev, u16 reg, u8 val) > +{ > + u8 buf[3] = { reg >> 8, reg, val }; > + int ret; > + > + ret = i2c_master_send(dev->isp, buf, 3); > + if (ret < 0) { > + dev_err(dev->dev, "%s: register 0x%04x write failed (%d)\n", > + __func__, reg, ret); > + return ret; > + } > + > + return 0; > +} > + > +static int ov490_set_page(struct rdacm21_device *dev, u16 reg) > +{ > + bool page_new = false; > + u8 page_high = reg >> 8; > + u8 page_low = reg; > + int ret; > + > + if (page_high != (dev->last_page >> 8)) { > + ret = ov490_write(dev, OV490_PAGE_HIGH_REG, page_high); > + if (ret) > + return ret; > + page_new = true; > + } > + > + if (page_low != (u8)dev->last_page) { > + ret = ov490_write(dev, OV490_PAGE_LOW_REG, page_low); > + if (ret) > + return ret; > + page_new = true; > + } > + > + if (page_new) { > + dev->last_page = reg; > + usleep_range(100, 150); > + } > + > + return 0; > +} > + > +static int ov490_read_reg(struct rdacm21_device *dev, u32 reg, u8 *val) > +{ > + int ret; > + > + ret = ov490_set_page(dev, reg >> 16); > + if (ret) > + return ret; > + > + ret = ov490_read(dev, (u16)reg, val); > + if (ret) > + return ret; > + > + dev_dbg(dev->dev, "%s: 0x%08x = 0x%02x\n", __func__, reg, *val); > + > + return 0; > +} > + > +static int ov490_write_reg(struct rdacm21_device *dev, u32 reg, u8 val) > +{ > + int ret; > + > + ret = ov490_set_page(dev, reg >> 16); > + if (ret) > + return ret; > + > + ret = ov490_write(dev, (u16)reg, val); > + if (ret) > + return ret; > + > + dev_dbg(dev->dev, "%s: 0x%08x = 0x%02x\n", __func__, reg, val); > + > + return 0; > +} > + > +static int rdacm21_s_stream(struct v4l2_subdev *sd, int enable) > +{ > + struct rdacm21_device *dev = sd_to_rdacm21(sd); > + > + /* > + * Enable serial link now that the ISP provides a valid pixel clock > + * to start serializing video data on the GMSL link. > + */ > + return max9271_set_serial_link(dev->serializer, enable); > +} > + > +static int rdacm21_enum_mbus_code(struct v4l2_subdev *sd, > + struct v4l2_subdev_pad_config *cfg, > + struct v4l2_subdev_mbus_code_enum *code) > +{ > + if (code->pad || code->index > 0) > + return -EINVAL; > + > + code->code = MEDIA_BUS_FMT_YUYV8_1X16; > + > + return 0; > +} > + > +static int rdacm21_get_fmt(struct v4l2_subdev *sd, > + struct v4l2_subdev_pad_config *cfg, > + struct v4l2_subdev_format *format) > +{ > + struct v4l2_mbus_framefmt *mf = &format->format; > + struct rdacm21_device *dev = sd_to_rdacm21(sd); > + > + if (format->pad) > + return -EINVAL; > + > + mf->width = dev->fmt.width; > + mf->height = dev->fmt.height; > + mf->code = MEDIA_BUS_FMT_YUYV8_1X16; > + mf->colorspace = V4L2_COLORSPACE_SRGB; > + mf->field = V4L2_FIELD_NONE; > + mf->ycbcr_enc = V4L2_YCBCR_ENC_601; > + mf->quantization = V4L2_QUANTIZATION_FULL_RANGE; > + mf->xfer_func = V4L2_XFER_FUNC_NONE; > + > + return 0; > +} > + > +static struct v4l2_subdev_video_ops rdacm21_video_ops = { > + .s_stream = rdacm21_s_stream, > +}; > + > +static const struct v4l2_subdev_pad_ops rdacm21_subdev_pad_ops = { > + .enum_mbus_code = rdacm21_enum_mbus_code, > + .get_fmt = rdacm21_get_fmt, > + .set_fmt = rdacm21_get_fmt, > +}; > + > +static struct v4l2_subdev_ops rdacm21_subdev_ops = { > + .video = &rdacm21_video_ops, > + .pad = &rdacm21_subdev_pad_ops, > +}; > + > +static int ov490_initialize(struct rdacm21_device *dev) > +{ > + unsigned int ov490_pid_retry = 20; > + unsigned int timeout; > + u8 pid, ver, val; > + unsigned int i; > + int ret; > + > + /* Read OV490 Id to test communications. */ > +pid_retry: > + ret = ov490_read_reg(dev, OV490_PID, &pid); > + if (ret < 0) { > + /* Give OV490 a few more cycles to exit from reset. */ > + if (ov490_pid_retry--) { > + usleep_range(1000, 2000); > + goto pid_retry; > + } > + > + dev_err(dev->dev, "OV490 PID read failed (%d)\n", ret); > + return ret; > + } > + > + ret = ov490_read_reg(dev, OV490_VER, &ver); > + if (ret < 0) { > + dev_err(dev->dev, "OV490 VERSION read failed (%d)\n", ret); > + return ret; > + } > + > + if (OV490_ID(pid, ver) != OV490_ID_VAL) { > + dev_err(dev->dev, "OV490 ID mismatch: (0x%04x)\n", > + OV490_ID(pid, ver)); > + return -ENODEV; > + } > + > + /* Wait for firmware boot by reading streamon status. */ > + for (timeout = 300; timeout > 0; timeout--) { > + ov490_read_reg(dev, OV490_ODS_CTRL, &val); > + if (val == OV490_ODS_CTRL_FRAME_OUTPUT_EN) > + break; > + mdelay(1); > + } > + if (!timeout) { > + dev_err(dev->dev, "Timeout firmware boot wait\n"); > + return -ENODEV; > + } > + dev_dbg(dev->dev, "Firmware booted in %u msec\n", 300 - timeout); > + > + /* Read OV10640 Id to test communications. */ > + ov490_write(dev, 0xfffd, 0x80); > + ov490_write(dev, 0xfffe, 0x19); > + usleep_range(100, 150); Is that setting a page? Or doing something else? > + > + ov490_write(dev, 0x5000, 0x01); > + ov490_write(dev, 0x5001, 0x30); > + ov490_write(dev, 0x5002, 0x0a); > + > + ov490_write(dev, 0xfffe, 0x80); > + usleep_range(100, 150); > + ov490_write(dev, 0xc0, 0xc1); > + ov490_write(dev, 0xfffe, 0x19); And here? Can this not go through the new helpers? If the 'read_reg', 'write_reg', helpers are not appropriate, at least setting the pages could be done with set_page() ... but I'd be surprised if those couldn't be handled with ov490_write_reg() ? > + usleep_range(1000, 1500); > + ov490_read(dev, 0x5000, &val); > + if (val != OV10640_ID_LOW) { > + dev_err(dev->dev, "OV10640 ID mismatch: (0x%02x)\n", val); > + return -ENODEV; > + } > + > + dev_dbg(dev->dev, "OV10640 ID = 0x%2x\n", val); > + > + for (i = 0; i < ARRAY_SIZE(ov490_regs_wizard); ++i) { > + ret = ov490_write(dev, ov490_regs_wizard[i].reg, > + ov490_regs_wizard[i].val); > + if (ret < 0) { > + dev_err(dev->dev, > + "%s: register %u (0x%04x) write failed (%d)\n", > + __func__, i, ov490_regs_wizard[i].reg, ret); > + > + return -EIO; > + } > + > + usleep_range(100, 150); > + } > + > + /* > + * The ISP is programmed with the content of a serial flash memory. > + * Read the firmware configuration to reflect it through the V4L2 APIs. > + */ > + ov490_read_reg(dev, OV490_ISP_HSIZE_HIGH, &val); > + dev->fmt.width = (val & 0xf) << 8; > + ov490_read_reg(dev, OV490_ISP_HSIZE_LOW, &val); > + dev->fmt.width |= (val & 0xff); > + > + ov490_read_reg(dev, OV490_ISP_VSIZE_HIGH, &val); > + dev->fmt.height = (val & 0xf) << 8; > + ov490_read_reg(dev, OV490_ISP_VSIZE_LOW, &val); > + dev->fmt.height |= val & 0xff; > + Hrm, these look like "ov490_read_reg_long()", but given they're the only occurrences of a "long read" I think we could leave it as is. > + /* Set bus width to 12 bits with [0:11] ordering. */ > + ov490_write_reg(dev, OV490_DVP_CTRL3, 0x10); > + > + dev_info(dev->dev, "Identified RDACM21 camera module\n"); > + > + return 0; > +} > + > +static int rdacm21_initialize(struct rdacm21_device *dev) > +{ > + int ret; > + > + /* Verify communication with the MAX9271: ping to wakeup. */ > + dev->serializer->client->addr = MAX9271_DEFAULT_ADDR; > + i2c_smbus_read_byte(dev->serializer->client); > + > + /* Serial link disabled during config as it needs a valid pixel clock. */ > + ret = max9271_set_serial_link(dev->serializer, false); > + if (ret) > + return ret; > + > + /* Set GPO high to hold OV490 in reset during max9271 configuration. */ > + ret = max9271_set_gpios(dev->serializer, MAX9271_GPO); > + if (ret) > + return ret; > + > + /* Configure I2C bus at 105Kbps speed and configure GMSL link. */ > + ret = max9271_configure_i2c(dev->serializer, > + MAX9271_I2CSLVSH_469NS_234NS | > + MAX9271_I2CSLVTO_1024US | > + MAX9271_I2CMSTBT_105KBPS); > + if (ret) > + return ret; > + > + ret = max9271_configure_gmsl_link(dev->serializer); > + if (ret) > + return ret; > + > + ret = max9271_set_address(dev->serializer, dev->addrs[0]); > + if (ret) > + return ret; > + dev->serializer->client->addr = dev->addrs[0]; > + > + /* > + * Release OV490 from reset and program address translation > + * before performing OV490 configuration. > + */ > + ret = max9271_clear_gpios(dev->serializer, MAX9271_GPO); > + if (ret) > + return ret; > + > + ret = max9271_set_translation(dev->serializer, dev->addrs[1], > + OV490_I2C_ADDRESS); > + if (ret) > + return ret; > + dev->isp->addr = dev->addrs[1]; > + > + ret = ov490_initialize(dev); > + if (ret) > + return ret; > + > + /* > + * Set reverse channel high threshold to increase noise immunity. > + * > + * This should be compensated by increasing the reverse channel > + * amplitude on the remote deserializer side. > + */ > + ret = max9271_set_high_threshold(dev->serializer, true); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int rdacm21_probe(struct i2c_client *client) > +{ > + struct rdacm21_device *dev; > + struct fwnode_handle *ep; > + int ret; > + > + dev = devm_kzalloc(&client->dev, sizeof(*dev), GFP_KERNEL); > + if (!dev) > + return -ENOMEM; > + dev->dev = &client->dev; > + > + dev->serializer = devm_kzalloc(&client->dev, sizeof(*dev->serializer), > + GFP_KERNEL); > + if (!dev->serializer) > + return -ENOMEM; > + > + dev->serializer->client = client; > + > + ret = of_property_read_u32_array(client->dev.of_node, "reg", > + dev->addrs, 2); > + if (ret < 0) { > + dev_err(dev->dev, "Invalid DT reg property: %d\n", ret); > + return -EINVAL; > + } > + > + /* Create the dummy I2C client for the sensor. */ > + dev->isp = i2c_new_dummy_device(client->adapter, OV490_I2C_ADDRESS); > + if (IS_ERR(dev->isp)) > + return PTR_ERR(dev->isp); > + > + ret = rdacm21_initialize(dev); > + if (ret < 0) > + goto error; > + > + /* Initialize and register the subdevice. */ > + v4l2_i2c_subdev_init(&dev->sd, client, &rdacm21_subdev_ops); > + dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; > + > + v4l2_ctrl_handler_init(&dev->ctrls, 1); > + v4l2_ctrl_new_std(&dev->ctrls, NULL, V4L2_CID_PIXEL_RATE, > + OV10640_PIXEL_RATE, OV10640_PIXEL_RATE, 1, > + OV10640_PIXEL_RATE); > + dev->sd.ctrl_handler = &dev->ctrls; > + > + ret = dev->ctrls.error; > + if (ret) > + goto error_free_ctrls; > + > + dev->pad.flags = MEDIA_PAD_FL_SOURCE; > + dev->sd.entity.flags |= MEDIA_ENT_F_CAM_SENSOR; > + ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad); > + if (ret < 0) > + goto error_free_ctrls; > + > + ep = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), NULL); > + if (!ep) { > + dev_err(&client->dev, > + "Unable to get endpoint in node %pOF\n", > + client->dev.of_node); > + ret = -ENOENT; > + goto error_free_ctrls; > + } > + dev->sd.fwnode = ep; > + > + ret = v4l2_async_register_subdev(&dev->sd); > + if (ret) > + goto error_put_node; > + > + return 0; > + > +error_put_node: > + fwnode_handle_put(dev->sd.fwnode); > +error_free_ctrls: > + v4l2_ctrl_handler_free(&dev->ctrls); > +error: > + i2c_unregister_device(dev->isp); > + > + return ret; > +} > + > +static int rdacm21_remove(struct i2c_client *client) > +{ > + struct rdacm21_device *dev = i2c_to_rdacm21(client); > + > + fwnode_handle_put(dev->sd.fwnode); > + v4l2_async_unregister_subdev(&dev->sd); > + v4l2_ctrl_handler_free(&dev->ctrls); > + i2c_unregister_device(dev->isp); > + > + return 0; > +} > + > +static const struct of_device_id rdacm21_of_ids[] = { > + { .compatible = "imi,rdacm21" }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, rdacm21_of_ids); > + > +static struct i2c_driver rdacm21_i2c_driver = { > + .driver = { > + .name = "rdacm21", > + .of_match_table = rdacm21_of_ids, > + }, > + .probe_new = rdacm21_probe, > + .remove = rdacm21_remove, > +}; > + > +module_i2c_driver(rdacm21_i2c_driver); > + > +MODULE_DESCRIPTION("GMSL Camera driver for RDACM21"); > +MODULE_AUTHOR("Jacopo Mondi, Kieran Bingham, Laurent Pinchart, Niklas Söderlund, Vladimir Barinov"); > +MODULE_LICENSE("GPL v2"); >