[v4] media: imx258: Add imx258 camera sensor driver

Message ID	1516333071-9766-1-git-send-email-andy.yeh@intel.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-media-owner@kernel.org> From: Andy Yeh <andy.yeh@intel.com> To: linux-media@vger.kernel.org Cc: andy.yeh@intel.com, sakari.ailus@linux.intel.com, tfiga@google.com Subject: [PATCH v4] media: imx258: Add imx258 camera sensor driver Date: Fri, 19 Jan 2018 11:37:51 +0800 Message-Id: <1516333071-9766-1-git-send-email-andy.yeh@intel.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk

diff --git a/MAINTAINERS b/MAINTAINERS index d76af75..806aa46 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12640,6 +12640,13 @@ S: Maintained F: drivers/ssb/ F: include/linux/ssb/ +SONY IMX258 SENSOR DRIVER +M: Sakari Ailus <sakari.ailus@linux.intel.com> +L: linux-media@vger.kernel.org +T: git git://linuxtv.org/media_tree.git +S: Maintained +F: drivers/media/i2c/imx258.c + SONY IMX274 SENSOR DRIVER M: Leon Luo <leonl@leopardimaging.com> L: linux-media@vger.kernel.org diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index cb5d7ff..cabde37 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -555,6 +555,17 @@ config VIDEO_APTINA_PLL config VIDEO_SMIAPP_PLL tristate +config VIDEO_IMX258 + tristate "Sony IMX258 sensor support" + depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API + depends on MEDIA_CAMERA_SUPPORT + ---help--- + This is a Video4Linux2 sensor-level driver for the Sony + IMX258 camera. + + To compile this driver as a module, choose M here: the + module will be called imx258. + config VIDEO_IMX274 tristate "Sony IMX274 sensor support" depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index 548a9ef..cf1e0f1 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -93,6 +93,7 @@ obj-$(CONFIG_VIDEO_IR_I2C) += ir-kbd-i2c.o obj-$(CONFIG_VIDEO_ML86V7667) += ml86v7667.o obj-$(CONFIG_VIDEO_OV2659) += ov2659.o obj-$(CONFIG_VIDEO_TC358743) += tc358743.o +obj-$(CONFIG_VIDEO_IMX258) += imx258.o obj-$(CONFIG_VIDEO_IMX274) += imx274.o obj-$(CONFIG_SDR_MAX2175) += max2175.o diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c new file mode 100644 index 0000000..a7e58bd2 --- /dev/null +++ b/drivers/media/i2c/imx258.c @@ -0,0 +1,1148 @@ +// Copyright (C) 2018 Intel Corporation +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/acpi.h> +#include <linux/delay.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> + +#define IMX258_REG_VALUE_08BIT 1 +#define IMX258_REG_VALUE_16BIT 2 +#define IMX258_REG_VALUE_24BIT 3 + +#define IMX258_REG_MODE_SELECT 0x0100 +#define IMX258_MODE_STANDBY 0x00 +#define IMX258_MODE_STREAMING 0x01 + +/* Chip ID */ +#define IMX258_REG_CHIP_ID 0x0016 +#define IMX258_CHIP_ID 0x0258 + +/* V_TIMING internal */ +#define IMX258_REG_VTS 0x0340 +#define IMX258_VTS_30FPS 0x0c98 +#define IMX258_VTS_MAX 0x7fff + +/* HBLANK control - read only */ +#define IMX258_PPL_650MHZ 5352 +#define IMX258_PPL_325MHZ 2676 + +/* Exposure control */ +#define IMX258_REG_EXPOSURE 0x0202 +#define IMX258_EXPOSURE_MIN 4 +#define IMX258_EXPOSURE_STEP 1 +#define IMX258_EXPOSURE_DEFAULT 0x640 + +/* Analog gain control */ +#define IMX258_REG_ANALOG_GAIN 0x0204 +#define IMX258_ANA_GAIN_MIN 0 +#define IMX258_ANA_GAIN_MAX 0x1fff +#define IMX258_ANA_GAIN_STEP 1 +#define IMX258_ANA_GAIN_DEFAULT 0x0 + +/* Orientation */ +#define REG_MIRROR_FLIP_CONTROL 0x0101 +#define REG_CONFIG_MIRROR_FLIP 0x03 + +struct imx258_reg { + u16 address; + u8 val; +}; + +struct imx258_reg_list { + u32 num_of_regs; + const struct imx258_reg *regs; +}; + +/* Link frequency config */ +struct imx258_link_freq_config { + u32 pixels_per_line; + + /* PLL registers for this link frequency */ + struct imx258_reg_list reg_list; +}; + +/* Mode : resolution and related config&values */ +struct imx258_mode { + /* Frame width */ + u32 width; + /* Frame height */ + u32 height; + + /* V-timing */ + u32 vts_def; + u32 vts_min; + + /* Index of Link frequency config to be used */ + u32 link_freq_index; + /* Default register values */ + struct imx258_reg_list reg_list; +}; + +/* 4208x3118 needs 1300Mbps/lane, 4 lanes */ +static const struct imx258_reg mipi_data_rate_1300mbps[] = { + {0x0301, 0x05}, + {0x0303, 0x02}, + {0x0305, 0x03}, + {0x0306, 0x00}, + {0x0307, 0xCB}, + {0x0309, 0x0A}, + {0x030B, 0x01}, + {0x030D, 0x02}, + {0x030E, 0x00}, + {0x030F, 0xD8}, + {0x0310, 0x00}, + {0x0820, 0x14}, + {0x0821, 0x4C}, + {0x0822, 0xCC}, + {0x0823, 0xCC}, +}; + +static const struct imx258_reg mipi_data_rate_650mbps[] = { + {0x0301, 0x05}, + {0x0303, 0x02}, + {0x0305, 0x03}, + {0x0306, 0x00}, + {0x0307, 0x64}, + {0x0309, 0x0A}, + {0x030B, 0x01}, + {0x030D, 0x02}, + {0x030E, 0x00}, + {0x030F, 0xD8}, + {0x0310, 0x00}, + {0x0820, 0x14}, + {0x0821, 0x50}, + {0x0822, 0x00}, + {0x0823, 0x00}, +}; + +static const struct imx258_reg mode_4208x3118_regs[] = { + {0x0136, 0x13}, + {0x0137, 0x33}, + {0x3051, 0x00}, + {0x3052, 0x00}, + {0x4E21, 0x14}, + {0x6B11, 0xCF}, + {0x7FF0, 0x08}, + {0x7FF1, 0x0F}, + {0x7FF2, 0x08}, + {0x7FF3, 0x1B}, + {0x7FF4, 0x23}, + {0x7FF5, 0x60}, + {0x7FF6, 0x00}, + {0x7FF7, 0x01}, + {0x7FF8, 0x00}, + {0x7FF9, 0x78}, + {0x7FFA, 0x00}, + {0x7FFB, 0x00}, + {0x7FFC, 0x00}, + {0x7FFD, 0x00}, + {0x7FFE, 0x00}, + {0x7FFF, 0x03}, + {0x7F76, 0x03}, + {0x7F77, 0xFE}, + {0x7FA8, 0x03}, + {0x7FA9, 0xFE}, + {0x7B24, 0x81}, + {0x7B25, 0x00}, + {0x6564, 0x07}, + {0x6B0D, 0x41}, + {0x653D, 0x04}, + {0x6B05, 0x8C}, + {0x6B06, 0xF9}, + {0x6B08, 0x65}, + {0x6B09, 0xFC}, + {0x6B0A, 0xCF}, + {0x6B0B, 0xD2}, + {0x6700, 0x0E}, + {0x6707, 0x0E}, + {0x9104, 0x00}, + {0x7421, 0x1C}, + {0x7423, 0xD7}, + {0x5F04, 0x00}, + {0x5F05, 0xED}, + {0x0112, 0x0A}, + {0x0113, 0x0A}, + {0x0114, 0x03}, + {0x0342, 0x14}, + {0x0343, 0xE8}, + {0x0340, 0x0C}, + {0x0341, 0x98}, + {0x0344, 0x00}, + {0x0345, 0x00}, + {0x0346, 0x00}, + {0x0347, 0x00}, + {0x0348, 0x10}, + {0x0349, 0x6F}, + {0x034A, 0x0C}, + {0x034B, 0x2E}, + {0x0381, 0x01}, + {0x0383, 0x01}, + {0x0385, 0x01}, + {0x0387, 0x01}, + {0x0900, 0x00}, + {0x0901, 0x11}, + {0x0401, 0x00}, + {0x0404, 0x00}, + {0x0405, 0x10}, + {0x0408, 0x00}, + {0x0409, 0x00}, + {0x040A, 0x00}, + {0x040B, 0x00}, + {0x040C, 0x10}, + {0x040D, 0x70}, + {0x040E, 0x0C}, + {0x040F, 0x30}, + {0x3038, 0x00}, + {0x303A, 0x00}, + {0x303B, 0x10}, + {0x300D, 0x00}, + {0x034C, 0x10}, + {0x034D, 0x70}, + {0x034E, 0x0C}, + {0x034F, 0x30}, + {0x0202, 0x0C}, + {0x0203, 0x8E}, + {0x0204, 0x00}, + {0x0205, 0x00}, + {0x020E, 0x01}, + {0x020F, 0x00}, + {0x7BCD, 0x00}, + {0x94DC, 0x20}, + {0x94DD, 0x20}, + {0x94DE, 0x20}, + {0x95DC, 0x20}, + {0x95DD, 0x20}, + {0x95DE, 0x20}, + {0x7FB0, 0x00}, + {0x9010, 0x3E}, + {0x9419, 0x50}, + {0x941B, 0x50}, + {0x9519, 0x50}, + {0x951B, 0x50}, + {0x3030, 0x00}, + {0x3032, 0x00}, + {0x0220, 0x00}, +}; + +static const struct imx258_reg mode_2104_1560_regs[] = { + {0x0136, 0x1A}, + {0x0137, 0x00}, + {0x3051, 0x00}, + {0x3052, 0x00}, + {0x4E21, 0x14}, + {0x6B11, 0xCF}, + {0x7FF0, 0x08}, + {0x7FF1, 0x0F}, + {0x7FF2, 0x08}, + {0x7FF3, 0x1B}, + {0x7FF4, 0x23}, + {0x7FF5, 0x60}, + {0x7FF6, 0x00}, + {0x7FF7, 0x01}, + {0x7FF8, 0x00}, + {0x7FF9, 0x78}, + {0x7FFA, 0x00}, + {0x7FFB, 0x00}, + {0x7FFC, 0x00}, + {0x7FFD, 0x00}, + {0x7FFE, 0x00}, + {0x7FFF, 0x03}, + {0x7F76, 0x03}, + {0x7F77, 0xFE}, + {0x7FA8, 0x03}, + {0x7FA9, 0xFE}, + {0x7B24, 0x81}, + {0x7B25, 0x00}, + {0x6564, 0x07}, + {0x6B0D, 0x41}, + {0x653D, 0x04}, + {0x6B05, 0x8C}, + {0x6B06, 0xF9}, + {0x6B08, 0x65}, + {0x6B09, 0xFC}, + {0x6B0A, 0xCF}, + {0x6B0B, 0xD2}, + {0x6700, 0x0E}, + {0x6707, 0x0E}, + {0x9104, 0x00}, + {0x7421, 0x1C}, + {0x7423, 0xD7}, + {0x5F04, 0x00}, + {0x5F05, 0xED}, + {0x0112, 0x0A}, + {0x0113, 0x0A}, + {0x0114, 0x03}, + {0x0342, 0x14}, + {0x0343, 0xE8}, + {0x0340, 0x06}, + {0x0341, 0x40}, + {0x0344, 0x00}, + {0x0345, 0x00}, + {0x0346, 0x00}, + {0x0347, 0x00}, + {0x0348, 0x10}, + {0x0349, 0x6F}, + {0x034A, 0x0C}, + {0x034B, 0x2E}, + {0x0381, 0x01}, + {0x0383, 0x01}, + {0x0385, 0x01}, + {0x0387, 0x01}, + {0x0900, 0x01}, + {0x0901, 0x12}, + {0x0401, 0x01}, + {0x0404, 0x00}, + {0x0405, 0x1F}, + {0x0408, 0x00}, + {0x0409, 0x3C}, + {0x040A, 0x00}, + {0x040B, 0x00}, + {0x040C, 0x0F}, + {0x040D, 0xF6}, + {0x040E, 0x06}, + {0x040F, 0x18}, + {0x3038, 0x00}, + {0x303A, 0x00}, + {0x303B, 0x10}, + {0x300D, 0x00}, + {0x034C, 0x08}, + {0x034D, 0x38}, + {0x034E, 0x06}, + {0x034F, 0x18}, + {0x0202, 0x06}, + {0x0203, 0x36}, + {0x0204, 0x00}, + {0x0205, 0x00}, + {0x020E, 0x01}, + {0x020F, 0x00}, + {0x7BCD, 0x01}, + {0x94DC, 0x20}, + {0x94DD, 0x20}, + {0x94DE, 0x20}, + {0x95DC, 0x20}, + {0x95DD, 0x20}, + {0x95DE, 0x20}, + {0x7FB0, 0x00}, + {0x9010, 0x3E}, + {0x9419, 0x50}, + {0x941B, 0x50}, + {0x9519, 0x50}, + {0x951B, 0x50}, + {0x3030, 0x00}, + {0x3032, 0x00}, + {0x0220, 0x00}, +}; + +static const char * const imx258_test_pattern_menu[] = { + "Disabled", + "Vertical Color Bar Type 1", + "Vertical Color Bar Type 2", + "Vertical Color Bar Type 3", + "Vertical Color Bar Type 4" +}; + +/* Configurations for supported link frequencies */ +#define IMX258_LINK_FREQ_650MHZ 649600000ULL +#define IMX258_LINK_FREQ_325MHZ 324800000ULL + +/* + * pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample + * data rate => double data rate; number of lanes => 4; bits per pixel => 10 + */ +static u64 link_freq_to_pixel_rate(u64 f) +{ + f *= 2 * 4; + do_div(f, 10); + + return f; +} + +/* Menu items for LINK_FREQ V4L2 control */ +static const s64 link_freq_menu_items[] = { + IMX258_LINK_FREQ_650MHZ, + IMX258_LINK_FREQ_325MHZ, +}; + +/* Link frequency configs */ +static const struct imx258_link_freq_config link_freq_configs[] = { + { + .pixels_per_line = IMX258_PPL_650MHZ, + .reg_list = { + .num_of_regs = ARRAY_SIZE(mipi_data_rate_1300mbps), + .regs = mipi_data_rate_1300mbps, + } + }, + { + .pixels_per_line = IMX258_PPL_325MHZ, + .reg_list = { + .num_of_regs = ARRAY_SIZE(mipi_data_rate_650mbps), + .regs = mipi_data_rate_650mbps, + } + }, +}; + +/* Mode configs */ +static const struct imx258_mode supported_modes[] = { + { + .width = 4208, + .height = 3118, + .vts_def = IMX258_VTS_30FPS, + .vts_min = IMX258_VTS_30FPS, + .reg_list = { + .num_of_regs = ARRAY_SIZE(mode_4208x3118_regs), + .regs = mode_4208x3118_regs, + }, + .link_freq_index = 0, + }, + { + .width = 2104, + .height = 1560, + .vts_def = IMX258_VTS_30FPS, + .vts_min = 1608, + .reg_list = { + .num_of_regs = ARRAY_SIZE(mode_2104_1560_regs), + .regs = mode_2104_1560_regs, + }, + .link_freq_index = 1, + }, +}; + +struct imx258 { + struct v4l2_subdev sd; + struct media_pad pad; + + struct v4l2_ctrl_handler ctrl_handler; + /* V4L2 Controls */ + struct v4l2_ctrl *link_freq; + struct v4l2_ctrl *pixel_rate; + struct v4l2_ctrl *vblank; + struct v4l2_ctrl *hblank; + struct v4l2_ctrl *exposure; + + /* Current mode */ + const struct imx258_mode *cur_mode; + + /* Mutex for serialized access */ + struct mutex mutex; + + /* Streaming on/off */ + bool streaming; +}; + +#define to_imx258(_sd) container_of(_sd, struct imx258, sd) + +/* Read registers up to 4 at a time */ +static int imx258_read_reg(struct imx258 *imx258, u16 reg, u32 len, u32 *val) +{ + struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); + struct i2c_msg msgs[2]; + u8 *data_be_p; + int ret; + u32 data_be = 0; + u16 reg_addr_be = cpu_to_be16(reg); + + if (len > 4) + return -EINVAL; + + data_be_p = (u8 *)&data_be; + /* Write register address */ + msgs[0].addr = client->addr; + msgs[0].flags = 0; + msgs[0].len = 2; + msgs[0].buf = (u8 *)&reg_addr_be; + + /* Read data from register */ + msgs[1].addr = client->addr; + msgs[1].flags = I2C_M_RD; + msgs[1].len = len; + msgs[1].buf = &data_be_p[4 - len]; + + ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); + if (ret != ARRAY_SIZE(msgs)) + return -EIO; + + *val = be32_to_cpu(data_be); + + return 0; +} + +/* Write registers up to 4 at a time */ +static int imx258_write_reg(struct imx258 *imx258, u16 reg, u32 len, u32 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); + int buf_i, val_i; + u8 buf[6], *val_p; + + if (len > 4) + return -EINVAL; + + buf[0] = reg >> 8; + buf[1] = reg & 0xff; + + val = cpu_to_be32(val); + val_p = (u8 *)&val; + buf_i = 2; + val_i = 4 - len; + + while (val_i < 4) + buf[buf_i++] = val_p[val_i++]; + + if (i2c_master_send(client, buf, len + 2) != len + 2) + return -EIO; + + return 0; +} + +/* Write a list of registers */ +static int imx258_write_regs(struct imx258 *imx258, + const struct imx258_reg *regs, u32 len) +{ + struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); + int ret; + u32 i; + + for (i = 0; i < len; i++) { + ret = imx258_write_reg(imx258, regs[i].address, 1, + regs[i].val); + if (ret) { + dev_err_ratelimited( + &client->dev, + "Failed to write reg 0x%4.4x. error = %d\n", + regs[i].address, ret); + + return ret; + } + } + + return 0; +} + +static int imx258_write_reg_list(struct imx258 *imx258, + const struct imx258_reg_list *r_list) +{ + return imx258_write_regs(imx258, r_list->regs, r_list->num_of_regs); +} + +/* Open sub-device */ +static int imx258_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + struct v4l2_mbus_framefmt *try_fmt = + v4l2_subdev_get_try_format(sd, fh->pad, 0); + + /* Initialize try_fmt */ + try_fmt->width = supported_modes[0].width; + try_fmt->height = supported_modes[0].height; + try_fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; + try_fmt->field = V4L2_FIELD_NONE; + + return 0; +} + +static int imx258_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct imx258 *imx258 = + container_of(ctrl->handler, struct imx258, ctrl_handler); + struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); + s64 max; + int ret = 0; + + /* Propagate change of current control to all related controls */ + if (ctrl->id == V4L2_CID_VBLANK) { + /* Update max exposure while meeting expected vblanking */ + max = imx258->cur_mode->height + ctrl->val - 8; + __v4l2_ctrl_modify_range(imx258->exposure, + imx258->exposure->minimum, + max, imx258->exposure->step, max); + } + + /* + * Applying V4L2 control value only happens + * when power is up for streaming + */ + if (pm_runtime_get_if_in_use(&client->dev) <= 0) + return 0; + + switch (ctrl->id) { + case V4L2_CID_ANALOGUE_GAIN: + ret = imx258_write_reg(imx258, IMX258_REG_ANALOG_GAIN, + IMX258_REG_VALUE_16BIT, ctrl->val); + break; + case V4L2_CID_EXPOSURE: + ret = imx258_write_reg(imx258, IMX258_REG_EXPOSURE, + IMX258_REG_VALUE_24BIT, + ctrl->val << 4); + break; + case V4L2_CID_VBLANK: + /* Update VTS that meets expected vertical blanking */ + ret = imx258_write_reg(imx258, IMX258_REG_VTS, + IMX258_REG_VALUE_16BIT, + imx258->cur_mode->height + + ctrl->val); + break; + default: + dev_info(&client->dev, + "ctrl(id:0x%x,val:0x%x) is not handled\n", + ctrl->id, ctrl->val); + break; + } + + pm_runtime_put(&client->dev); + + return ret; +} + +static const struct v4l2_ctrl_ops imx258_ctrl_ops = { + .s_ctrl = imx258_set_ctrl, +}; + +static int imx258_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + /* Only one bayer order(GRBG) is supported */ + if (code->index > 0) + return -EINVAL; + + code->code = MEDIA_BUS_FMT_SGRBG10_1X10; + + return 0; +} + +static int imx258_enum_frame_size(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_size_enum *fse) +{ + if (fse->index >= ARRAY_SIZE(supported_modes)) + return -EINVAL; + + if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10) + return -EINVAL; + + fse->min_width = supported_modes[fse->index].width; + fse->max_width = fse->min_width; + fse->min_height = supported_modes[fse->index].height; + fse->max_height = fse->min_height; + + return 0; +} + +static void imx258_update_pad_format(const struct imx258_mode *mode, + struct v4l2_subdev_format *fmt) +{ + fmt->format.width = mode->width; + fmt->format.height = mode->height; + fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10; + fmt->format.field = V4L2_FIELD_NONE; +} + +static int __imx258_get_pad_format(struct imx258 *imx258, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) + fmt->format = *v4l2_subdev_get_try_format(&imx258->sd, cfg, + fmt->pad); + else + imx258_update_pad_format(imx258->cur_mode, fmt); + + return 0; +} + +static int imx258_get_pad_format(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct imx258 *imx258 = to_imx258(sd); + int ret; + + mutex_lock(&imx258->mutex); + ret = __imx258_get_pad_format(imx258, cfg, fmt); + mutex_unlock(&imx258->mutex); + + return ret; +} + +/* + * Calculate resolution distance + */ +static int imx258_get_resolution_dist(const struct imx258_mode *mode, + struct v4l2_mbus_framefmt *framefmt) +{ + return abs(mode->width - framefmt->width) + + abs(mode->height - framefmt->height); +} + +/* + * Find the closest supported resolution to the requested resolution + */ +static const struct imx258_mode * +imx258_find_best_fit(struct imx258 *imx258, + struct v4l2_subdev_format *fmt) +{ + int i, dist, cur_best_fit = 0, cur_best_fit_dist = -1; + struct v4l2_mbus_framefmt *framefmt = &fmt->format; + + for (i = 0; i < ARRAY_SIZE(supported_modes); i++) { + dist = imx258_get_resolution_dist(&supported_modes[i], + framefmt); + if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) { + cur_best_fit_dist = dist; + cur_best_fit = i; + } + } + + return &supported_modes[cur_best_fit]; +} + +static int imx258_set_pad_format(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct imx258 *imx258 = to_imx258(sd); + const struct imx258_mode *mode; + struct v4l2_mbus_framefmt *framefmt; + s32 vblank_def; + s32 vblank_min; + s64 h_blank; + s64 pixel_rate; + s64 link_freq; + + mutex_lock(&imx258->mutex); + + /* Only one raw bayer(GBRG) order is supported */ + fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10; + + mode = imx258_find_best_fit(imx258, fmt); + imx258_update_pad_format(mode, fmt); + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + framefmt = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); + *framefmt = fmt->format; + } else { + imx258->cur_mode = mode; + __v4l2_ctrl_s_ctrl(imx258->link_freq, mode->link_freq_index); + + link_freq = link_freq_menu_items[mode->link_freq_index]; + pixel_rate = link_freq_to_pixel_rate(link_freq); + __v4l2_ctrl_s_ctrl_int64(imx258->pixel_rate, pixel_rate); + /* Update limits and set FPS to default */ + vblank_def = imx258->cur_mode->vts_def - + imx258->cur_mode->height; + vblank_min = imx258->cur_mode->vts_min - + imx258->cur_mode->height; + __v4l2_ctrl_modify_range( + imx258->vblank, vblank_min, + IMX258_VTS_MAX - imx258->cur_mode->height, 1, + vblank_def); + __v4l2_ctrl_s_ctrl(imx258->vblank, vblank_def); + h_blank = + link_freq_configs[mode->link_freq_index].pixels_per_line + - imx258->cur_mode->width; + __v4l2_ctrl_modify_range(imx258->hblank, h_blank, + h_blank, 1, h_blank); + } + + mutex_unlock(&imx258->mutex); + + return 0; +} + +/* Start streaming */ +static int imx258_start_streaming(struct imx258 *imx258) +{ + struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); + const struct imx258_reg_list *reg_list; + int ret, link_freq_index; + + /* Setup PLL */ + link_freq_index = imx258->cur_mode->link_freq_index; + reg_list = &link_freq_configs[link_freq_index].reg_list; + ret = imx258_write_reg_list(imx258, reg_list); + if (ret) { + dev_err(&client->dev, "%s failed to set plls\n", __func__); + return ret; + } + + /* Apply default values of current mode */ + reg_list = &imx258->cur_mode->reg_list; + ret = imx258_write_reg_list(imx258, reg_list); + if (ret) { + dev_err(&client->dev, "%s failed to set mode\n", __func__); + return ret; + } + + /* Set Orientation be 180 degree */ + ret = imx258_write_reg(imx258, REG_MIRROR_FLIP_CONTROL, + IMX258_REG_VALUE_08BIT, REG_CONFIG_MIRROR_FLIP); + if (ret) { + dev_err(&client->dev, "%s failed to set orientation\n", + __func__); + return ret; + } + + /* Apply customized values from user */ + ret = __v4l2_ctrl_handler_setup(imx258->sd.ctrl_handler); + if (ret) + return ret; + + usleep_range(12000, 13000); + + /* set stream on register */ + return imx258_write_reg(imx258, IMX258_REG_MODE_SELECT, + IMX258_REG_VALUE_08BIT, + IMX258_MODE_STREAMING); +} + +/* Stop streaming */ +static int imx258_stop_streaming(struct imx258 *imx258) +{ + struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); + int ret; + + /* set stream off register */ + ret = imx258_write_reg(imx258, IMX258_REG_MODE_SELECT, + IMX258_REG_VALUE_08BIT, IMX258_MODE_STANDBY); + if (ret) + dev_err(&client->dev, "%s failed to set stream\n", __func__); + + /* Return success even if it was an error, as there is nothing the + * caller can do about it. + */ + return 0; +} + +static int imx258_set_stream(struct v4l2_subdev *sd, int enable) +{ + struct imx258 *imx258 = to_imx258(sd); + struct i2c_client *client = v4l2_get_subdevdata(sd); + int ret = 0; + + mutex_lock(&imx258->mutex); + if (imx258->streaming == enable) { + mutex_unlock(&imx258->mutex); + return 0; + } + + if (enable) { + ret = pm_runtime_get_sync(&client->dev); + if (ret < 0) { + pm_runtime_put_noidle(&client->dev); + goto err_unlock; + } + + /* + * Apply default & customized values + * and then start streaming. + */ + ret = imx258_start_streaming(imx258); + if (ret) + goto err_rpm_put; + } else { + imx258_stop_streaming(imx258); + pm_runtime_put(&client->dev); + } + + imx258->streaming = enable; + mutex_unlock(&imx258->mutex); + + return ret; + +err_rpm_put: + pm_runtime_put(&client->dev); +err_unlock: + mutex_unlock(&imx258->mutex); + + return ret; +} + +static int __maybe_unused imx258_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx258 *imx258 = to_imx258(sd); + + if (imx258->streaming) + imx258_stop_streaming(imx258); + + return 0; +} + +static int __maybe_unused imx258_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx258 *imx258 = to_imx258(sd); + int ret; + + if (imx258->streaming) { + ret = imx258_start_streaming(imx258); + if (ret) + goto error; + } + + return 0; + +error: + imx258_stop_streaming(imx258); + imx258->streaming = 0; + return ret; +} + +/* Verify chip ID */ +static int imx258_identify_module(struct imx258 *imx258) +{ + struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); + int ret; + u32 val; + + ret = imx258_read_reg(imx258, IMX258_REG_CHIP_ID, + IMX258_REG_VALUE_16BIT, &val); + if (ret) { + dev_err(&client->dev, "failed to read chip id %x\n", + IMX258_CHIP_ID); + return ret; + } + + if (val != IMX258_CHIP_ID) { + dev_err(&client->dev, "chip id mismatch: %x!=%x\n", + IMX258_CHIP_ID, val); + return -EIO; + } + + return 0; +} + +static const struct v4l2_subdev_video_ops imx258_video_ops = { + .s_stream = imx258_set_stream, +}; + +static const struct v4l2_subdev_pad_ops imx258_pad_ops = { + .enum_mbus_code = imx258_enum_mbus_code, + .get_fmt = imx258_get_pad_format, + .set_fmt = imx258_set_pad_format, + .enum_frame_size = imx258_enum_frame_size, +}; + +static const struct v4l2_subdev_ops imx258_subdev_ops = { + .video = &imx258_video_ops, + .pad = &imx258_pad_ops, +}; + +static const struct v4l2_subdev_internal_ops imx258_internal_ops = { + .open = imx258_open, +}; + +/* Initialize control handlers */ +static int imx258_init_controls(struct imx258 *imx258) +{ + struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); + struct v4l2_ctrl_handler *ctrl_hdlr; + s64 exposure_max; + s64 vblank_def; + s64 vblank_min; + s64 pixel_rate_min; + s64 pixel_rate_max; + int ret; + + ctrl_hdlr = &imx258->ctrl_handler; + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8); + if (ret) + return ret; + + mutex_init(&imx258->mutex); + ctrl_hdlr->lock = &imx258->mutex; + imx258->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, + &imx258_ctrl_ops, + V4L2_CID_LINK_FREQ, + ARRAY_SIZE(link_freq_menu_items) - 1, + 0, + link_freq_menu_items); + + if (!imx258->link_freq) { + ret = -EINVAL; + goto error; + } + + imx258->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0]); + pixel_rate_min = link_freq_to_pixel_rate(link_freq_menu_items[1]); + /* By default, PIXEL_RATE is read only */ + imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, + V4L2_CID_PIXEL_RATE, + pixel_rate_min, pixel_rate_max, + 1, pixel_rate_max); + + + vblank_def = imx258->cur_mode->vts_def - imx258->cur_mode->height; + vblank_min = imx258->cur_mode->vts_min - imx258->cur_mode->height; + imx258->vblank = v4l2_ctrl_new_std( + ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_VBLANK, + vblank_min, + IMX258_VTS_MAX - imx258->cur_mode->height, 1, + vblank_def); + + imx258->hblank = v4l2_ctrl_new_std( + ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_HBLANK, + IMX258_PPL_650MHZ - imx258->cur_mode->width, + IMX258_PPL_650MHZ - imx258->cur_mode->width, + 1, + IMX258_PPL_650MHZ - imx258->cur_mode->width); + + if (!imx258->hblank) { + ret = -EINVAL; + goto error; + } + + imx258->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + exposure_max = imx258->cur_mode->vts_def - 8; + imx258->exposure = v4l2_ctrl_new_std( + ctrl_hdlr, &imx258_ctrl_ops, + V4L2_CID_EXPOSURE, IMX258_EXPOSURE_MIN, + exposure_max, IMX258_EXPOSURE_STEP, + IMX258_EXPOSURE_DEFAULT); + + v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, + IMX258_ANA_GAIN_MIN, IMX258_ANA_GAIN_MAX, + IMX258_ANA_GAIN_STEP, IMX258_ANA_GAIN_DEFAULT); + + v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx258_ctrl_ops, + V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(imx258_test_pattern_menu) - 1, + 0, 0, imx258_test_pattern_menu); + + if (ctrl_hdlr->error) { + ret = ctrl_hdlr->error; + dev_err(&client->dev, "%s control init failed (%d)\n", + __func__, ret); + goto error; + } + + imx258->sd.ctrl_handler = ctrl_hdlr; + + return 0; + +error: + v4l2_ctrl_handler_free(ctrl_hdlr); + mutex_destroy(&imx258->mutex); + + return ret; +} + +static void imx258_free_controls(struct imx258 *imx258) +{ + v4l2_ctrl_handler_free(imx258->sd.ctrl_handler); + mutex_destroy(&imx258->mutex); +} + +static int imx258_probe(struct i2c_client *client) +{ + struct imx258 *imx258; + int ret; + u32 val = 0; + + device_property_read_u32(&client->dev, "clock-frequency", &val); + if (val != 19200000) + return -EINVAL; + + imx258 = devm_kzalloc(&client->dev, sizeof(*imx258), GFP_KERNEL); + if (!imx258) + return -ENOMEM; + + /* Initialize subdev */ + v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops); + + /* Check module identity */ + ret = imx258_identify_module(imx258); + if (ret) + return ret; + + /* Set default mode to max resolution */ + imx258->cur_mode = &supported_modes[0]; + + ret = imx258_init_controls(imx258); + if (ret) + return ret; + + /* Initialize subdev */ + imx258->sd.internal_ops = &imx258_internal_ops; + imx258->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + imx258->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; + + /* Initialize source pad */ + imx258->pad.flags = MEDIA_PAD_FL_SOURCE; + + ret = media_entity_pads_init(&imx258->sd.entity, 1, &imx258->pad); + if (ret) { + dev_err(&client->dev, "%s failed:%d\n", __func__, ret); + goto error_handler_free; + } + + ret = v4l2_async_register_subdev_sensor_common(&imx258->sd); + if (ret < 0) + goto error_media_entity; + + pm_runtime_set_active(&client->dev); + pm_runtime_enable(&client->dev); + pm_runtime_idle(&client->dev); + + return 0; + +error_media_entity: + media_entity_cleanup(&imx258->sd.entity); + +error_handler_free: + imx258_free_controls(imx258); + + return ret; +} + +static int imx258_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx258 *imx258 = to_imx258(sd); + + v4l2_async_unregister_subdev(sd); + media_entity_cleanup(&sd->entity); + imx258_free_controls(imx258); + + pm_runtime_disable(&client->dev); + pm_runtime_set_suspended(&client->dev); + + return 0; +} + +static const struct dev_pm_ops imx258_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(imx258_suspend, imx258_resume) +}; + +#ifdef CONFIG_ACPI +static const struct acpi_device_id imx258_acpi_ids[] = { + { "SONY258A" }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(acpi, imx258_acpi_ids); +#endif + +static struct i2c_driver imx258_i2c_driver = { + .driver = { + .name = "imx258", + .pm = &imx258_pm_ops, + .acpi_match_table = ACPI_PTR(imx258_acpi_ids), + }, + .probe_new = imx258_probe, + .remove = imx258_remove, +}; + +module_i2c_driver(imx258_i2c_driver); + +MODULE_AUTHOR("Yeh, Andy <andy.yeh@intel.com>"); +MODULE_AUTHOR("Chiang, Alan <alanx.chiang@intel.com>"); +MODULE_AUTHOR("Chen, Jason <jasonx.z.chen@intel.com>"); +MODULE_DESCRIPTION("Sony IMX258 sensor driver"); +MODULE_LICENSE("GPL v2");

[v4] media: imx258: Add imx258 camera sensor driver

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