diff options
Diffstat (limited to 'drivers/media/i2c/imx290.c')
| -rw-r--r-- | drivers/media/i2c/imx290.c | 1668 |
1 files changed, 1668 insertions, 0 deletions
diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c new file mode 100644 index 000000000..c6fea5837 --- /dev/null +++ b/drivers/media/i2c/imx290.c @@ -0,0 +1,1668 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Sony IMX290 CMOS Image Sensor Driver + * + * Copyright (C) 2019 FRAMOS GmbH. + * + * Copyright (C) 2019 Linaro Ltd. + * Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + */ + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> + +#include <asm/unaligned.h> + +#include <media/media-entity.h> +#include <media/v4l2-cci.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-event.h> +#include <media/v4l2-fwnode.h> +#include <media/v4l2-subdev.h> + +#define IMX290_STANDBY CCI_REG8(0x3000) +#define IMX290_REGHOLD CCI_REG8(0x3001) +#define IMX290_XMSTA CCI_REG8(0x3002) +#define IMX290_ADBIT CCI_REG8(0x3005) +#define IMX290_ADBIT_10BIT (0 << 0) +#define IMX290_ADBIT_12BIT (1 << 0) +#define IMX290_CTRL_07 CCI_REG8(0x3007) +#define IMX290_VREVERSE BIT(0) +#define IMX290_HREVERSE BIT(1) +#define IMX290_WINMODE_1080P (0 << 4) +#define IMX290_WINMODE_720P (1 << 4) +#define IMX290_WINMODE_CROP (4 << 4) +#define IMX290_FR_FDG_SEL CCI_REG8(0x3009) +#define IMX290_BLKLEVEL CCI_REG16_LE(0x300a) +#define IMX290_GAIN CCI_REG8(0x3014) +#define IMX290_VMAX CCI_REG24_LE(0x3018) +#define IMX290_VMAX_MAX 0x3ffff +#define IMX290_HMAX CCI_REG16_LE(0x301c) +#define IMX290_HMAX_MAX 0xffff +#define IMX290_SHS1 CCI_REG24_LE(0x3020) +#define IMX290_WINWV_OB CCI_REG8(0x303a) +#define IMX290_WINPV CCI_REG16_LE(0x303c) +#define IMX290_WINWV CCI_REG16_LE(0x303e) +#define IMX290_WINPH CCI_REG16_LE(0x3040) +#define IMX290_WINWH CCI_REG16_LE(0x3042) +#define IMX290_OUT_CTRL CCI_REG8(0x3046) +#define IMX290_ODBIT_10BIT (0 << 0) +#define IMX290_ODBIT_12BIT (1 << 0) +#define IMX290_OPORTSEL_PARALLEL (0x0 << 4) +#define IMX290_OPORTSEL_LVDS_2CH (0xd << 4) +#define IMX290_OPORTSEL_LVDS_4CH (0xe << 4) +#define IMX290_OPORTSEL_LVDS_8CH (0xf << 4) +#define IMX290_XSOUTSEL CCI_REG8(0x304b) +#define IMX290_XSOUTSEL_XVSOUTSEL_HIGH (0 << 0) +#define IMX290_XSOUTSEL_XVSOUTSEL_VSYNC (2 << 0) +#define IMX290_XSOUTSEL_XHSOUTSEL_HIGH (0 << 2) +#define IMX290_XSOUTSEL_XHSOUTSEL_HSYNC (2 << 2) +#define IMX290_INCKSEL1 CCI_REG8(0x305c) +#define IMX290_INCKSEL2 CCI_REG8(0x305d) +#define IMX290_INCKSEL3 CCI_REG8(0x305e) +#define IMX290_INCKSEL4 CCI_REG8(0x305f) +#define IMX290_PGCTRL CCI_REG8(0x308c) +#define IMX290_ADBIT1 CCI_REG8(0x3129) +#define IMX290_ADBIT1_10BIT 0x1d +#define IMX290_ADBIT1_12BIT 0x00 +#define IMX290_INCKSEL5 CCI_REG8(0x315e) +#define IMX290_INCKSEL6 CCI_REG8(0x3164) +#define IMX290_ADBIT2 CCI_REG8(0x317c) +#define IMX290_ADBIT2_10BIT 0x12 +#define IMX290_ADBIT2_12BIT 0x00 +#define IMX290_CHIP_ID CCI_REG16_LE(0x319a) +#define IMX290_ADBIT3 CCI_REG8(0x31ec) +#define IMX290_ADBIT3_10BIT 0x37 +#define IMX290_ADBIT3_12BIT 0x0e +#define IMX290_REPETITION CCI_REG8(0x3405) +#define IMX290_PHY_LANE_NUM CCI_REG8(0x3407) +#define IMX290_OPB_SIZE_V CCI_REG8(0x3414) +#define IMX290_Y_OUT_SIZE CCI_REG16_LE(0x3418) +#define IMX290_CSI_DT_FMT CCI_REG16_LE(0x3441) +#define IMX290_CSI_DT_FMT_RAW10 0x0a0a +#define IMX290_CSI_DT_FMT_RAW12 0x0c0c +#define IMX290_CSI_LANE_MODE CCI_REG8(0x3443) +#define IMX290_EXTCK_FREQ CCI_REG16_LE(0x3444) +#define IMX290_TCLKPOST CCI_REG16_LE(0x3446) +#define IMX290_THSZERO CCI_REG16_LE(0x3448) +#define IMX290_THSPREPARE CCI_REG16_LE(0x344a) +#define IMX290_TCLKTRAIL CCI_REG16_LE(0x344c) +#define IMX290_THSTRAIL CCI_REG16_LE(0x344e) +#define IMX290_TCLKZERO CCI_REG16_LE(0x3450) +#define IMX290_TCLKPREPARE CCI_REG16_LE(0x3452) +#define IMX290_TLPX CCI_REG16_LE(0x3454) +#define IMX290_X_OUT_SIZE CCI_REG16_LE(0x3472) +#define IMX290_INCKSEL7 CCI_REG8(0x3480) + +#define IMX290_PGCTRL_REGEN BIT(0) +#define IMX290_PGCTRL_THRU BIT(1) +#define IMX290_PGCTRL_MODE(n) ((n) << 4) + +/* Number of lines by which exposure must be less than VMAX */ +#define IMX290_EXPOSURE_OFFSET 2 + +#define IMX290_PIXEL_RATE 148500000 + +/* + * The IMX290 pixel array is organized as follows: + * + * +------------------------------------+ + * | Optical Black | } Vertical effective optical black (10) + * +---+------------------------------------+---+ + * | | | | } Effective top margin (8) + * | | +----------------------------+ | | \ + * | | | | | | | + * | | | | | | | + * | | | | | | | + * | | | Recording Pixel Area | | | | Recommended height (1080) + * | | | | | | | + * | | | | | | | + * | | | | | | | + * | | +----------------------------+ | | / + * | | | | } Effective bottom margin (9) + * +---+------------------------------------+---+ + * <-> <-> <--------------------------> <-> <-> + * \---- Ignored right margin (4) + * \-------- Effective right margin (9) + * \------------------------- Recommended width (1920) + * \----------------------------------------- Effective left margin (8) + * \--------------------------------------------- Ignored left margin (4) + * + * The optical black lines are output over CSI-2 with a separate data type. + * + * The pixel array is meant to have 1920x1080 usable pixels after image + * processing in an ISP. It has 8 (9) extra active pixels usable for color + * processing in the ISP on the top and left (bottom and right) sides of the + * image. In addition, 4 additional pixels are present on the left and right + * sides of the image, documented as "ignored area". + * + * As far as is understood, all pixels of the pixel array (ignored area, color + * processing margins and recording area) can be output by the sensor. + */ + +#define IMX290_PIXEL_ARRAY_WIDTH 1945 +#define IMX290_PIXEL_ARRAY_HEIGHT 1097 +#define IMX920_PIXEL_ARRAY_MARGIN_LEFT 12 +#define IMX920_PIXEL_ARRAY_MARGIN_RIGHT 13 +#define IMX920_PIXEL_ARRAY_MARGIN_TOP 8 +#define IMX920_PIXEL_ARRAY_MARGIN_BOTTOM 9 +#define IMX290_PIXEL_ARRAY_RECORDING_WIDTH 1920 +#define IMX290_PIXEL_ARRAY_RECORDING_HEIGHT 1080 + +/* Equivalent value for 16bpp */ +#define IMX290_BLACK_LEVEL_DEFAULT 3840 + +#define IMX290_NUM_SUPPLIES 3 + +enum imx290_colour_variant { + IMX290_VARIANT_COLOUR, + IMX290_VARIANT_MONO, + IMX290_VARIANT_MAX +}; + +enum imx290_model { + IMX290_MODEL_IMX290LQR, + IMX290_MODEL_IMX290LLR, + IMX290_MODEL_IMX327LQR, +}; + +struct imx290_model_info { + enum imx290_colour_variant colour_variant; + const struct cci_reg_sequence *init_regs; + size_t init_regs_num; + const char *name; +}; + +enum imx290_clk_freq { + IMX290_CLK_37_125, + IMX290_CLK_74_25, + IMX290_NUM_CLK +}; + +/* + * Clock configuration for registers INCKSEL1 to INCKSEL6. + */ +struct imx290_clk_cfg { + u8 incksel1; + u8 incksel2; + u8 incksel3; + u8 incksel4; + u8 incksel5; + u8 incksel6; +}; + +struct imx290_mode { + u32 width; + u32 height; + u32 hmax_min; + u32 vmax_min; + u8 link_freq_index; + u8 ctrl_07; + + const struct cci_reg_sequence *data; + u32 data_size; + + const struct imx290_clk_cfg *clk_cfg; +}; + +struct imx290_csi_cfg { + u16 repetition; + u16 tclkpost; + u16 thszero; + u16 thsprepare; + u16 tclktrail; + u16 thstrail; + u16 tclkzero; + u16 tclkprepare; + u16 tlpx; +}; + +struct imx290 { + struct device *dev; + struct clk *xclk; + struct regmap *regmap; + enum imx290_clk_freq xclk_idx; + u8 nlanes; + const struct imx290_model_info *model; + + struct v4l2_subdev sd; + struct media_pad pad; + + const struct imx290_mode *current_mode; + + struct regulator_bulk_data supplies[IMX290_NUM_SUPPLIES]; + struct gpio_desc *rst_gpio; + + struct v4l2_ctrl_handler ctrls; + struct v4l2_ctrl *link_freq; + struct v4l2_ctrl *hblank; + struct v4l2_ctrl *vblank; + struct v4l2_ctrl *exposure; + struct { + struct v4l2_ctrl *hflip; + struct v4l2_ctrl *vflip; + }; +}; + +static inline struct imx290 *to_imx290(struct v4l2_subdev *_sd) +{ + return container_of(_sd, struct imx290, sd); +} + +/* ----------------------------------------------------------------------------- + * Modes and formats + */ + +static const struct cci_reg_sequence imx290_global_init_settings[] = { + { IMX290_WINWV_OB, 12 }, + { IMX290_WINPH, 0 }, + { IMX290_WINPV, 0 }, + { IMX290_WINWH, 1948 }, + { IMX290_WINWV, 1097 }, + { IMX290_XSOUTSEL, IMX290_XSOUTSEL_XVSOUTSEL_VSYNC | + IMX290_XSOUTSEL_XHSOUTSEL_HSYNC }, + { CCI_REG8(0x3011), 0x02 }, + { CCI_REG8(0x3012), 0x64 }, + { CCI_REG8(0x3013), 0x00 }, +}; + +static const struct cci_reg_sequence imx290_global_init_settings_290[] = { + { CCI_REG8(0x300f), 0x00 }, + { CCI_REG8(0x3010), 0x21 }, + { CCI_REG8(0x3016), 0x09 }, + { CCI_REG8(0x3070), 0x02 }, + { CCI_REG8(0x3071), 0x11 }, + { CCI_REG8(0x309b), 0x10 }, + { CCI_REG8(0x309c), 0x22 }, + { CCI_REG8(0x30a2), 0x02 }, + { CCI_REG8(0x30a6), 0x20 }, + { CCI_REG8(0x30a8), 0x20 }, + { CCI_REG8(0x30aa), 0x20 }, + { CCI_REG8(0x30ac), 0x20 }, + { CCI_REG8(0x30b0), 0x43 }, + { CCI_REG8(0x3119), 0x9e }, + { CCI_REG8(0x311c), 0x1e }, + { CCI_REG8(0x311e), 0x08 }, + { CCI_REG8(0x3128), 0x05 }, + { CCI_REG8(0x313d), 0x83 }, + { CCI_REG8(0x3150), 0x03 }, + { CCI_REG8(0x317e), 0x00 }, + { CCI_REG8(0x32b8), 0x50 }, + { CCI_REG8(0x32b9), 0x10 }, + { CCI_REG8(0x32ba), 0x00 }, + { CCI_REG8(0x32bb), 0x04 }, + { CCI_REG8(0x32c8), 0x50 }, + { CCI_REG8(0x32c9), 0x10 }, + { CCI_REG8(0x32ca), 0x00 }, + { CCI_REG8(0x32cb), 0x04 }, + { CCI_REG8(0x332c), 0xd3 }, + { CCI_REG8(0x332d), 0x10 }, + { CCI_REG8(0x332e), 0x0d }, + { CCI_REG8(0x3358), 0x06 }, + { CCI_REG8(0x3359), 0xe1 }, + { CCI_REG8(0x335a), 0x11 }, + { CCI_REG8(0x3360), 0x1e }, + { CCI_REG8(0x3361), 0x61 }, + { CCI_REG8(0x3362), 0x10 }, + { CCI_REG8(0x33b0), 0x50 }, + { CCI_REG8(0x33b2), 0x1a }, + { CCI_REG8(0x33b3), 0x04 }, +}; + +#define IMX290_NUM_CLK_REGS 2 +static const struct cci_reg_sequence xclk_regs[][IMX290_NUM_CLK_REGS] = { + [IMX290_CLK_37_125] = { + { IMX290_EXTCK_FREQ, (37125 * 256) / 1000 }, + { IMX290_INCKSEL7, 0x49 }, + }, + [IMX290_CLK_74_25] = { + { IMX290_EXTCK_FREQ, (74250 * 256) / 1000 }, + { IMX290_INCKSEL7, 0x92 }, + }, +}; + +static const struct cci_reg_sequence imx290_global_init_settings_327[] = { + { CCI_REG8(0x309e), 0x4A }, + { CCI_REG8(0x309f), 0x4A }, + { CCI_REG8(0x313b), 0x61 }, +}; + +static const struct cci_reg_sequence imx290_1080p_settings[] = { + /* mode settings */ + { IMX290_WINWV_OB, 12 }, + { IMX290_OPB_SIZE_V, 10 }, + { IMX290_X_OUT_SIZE, 1920 }, + { IMX290_Y_OUT_SIZE, 1080 }, +}; + +static const struct cci_reg_sequence imx290_720p_settings[] = { + /* mode settings */ + { IMX290_WINWV_OB, 6 }, + { IMX290_OPB_SIZE_V, 4 }, + { IMX290_X_OUT_SIZE, 1280 }, + { IMX290_Y_OUT_SIZE, 720 }, +}; + +static const struct cci_reg_sequence imx290_10bit_settings[] = { + { IMX290_ADBIT, IMX290_ADBIT_10BIT }, + { IMX290_OUT_CTRL, IMX290_ODBIT_10BIT }, + { IMX290_ADBIT1, IMX290_ADBIT1_10BIT }, + { IMX290_ADBIT2, IMX290_ADBIT2_10BIT }, + { IMX290_ADBIT3, IMX290_ADBIT3_10BIT }, + { IMX290_CSI_DT_FMT, IMX290_CSI_DT_FMT_RAW10 }, +}; + +static const struct cci_reg_sequence imx290_12bit_settings[] = { + { IMX290_ADBIT, IMX290_ADBIT_12BIT }, + { IMX290_OUT_CTRL, IMX290_ODBIT_12BIT }, + { IMX290_ADBIT1, IMX290_ADBIT1_12BIT }, + { IMX290_ADBIT2, IMX290_ADBIT2_12BIT }, + { IMX290_ADBIT3, IMX290_ADBIT3_12BIT }, + { IMX290_CSI_DT_FMT, IMX290_CSI_DT_FMT_RAW12 }, +}; + +static const struct imx290_csi_cfg imx290_csi_222_75mhz = { + /* 222.75MHz or 445.5Mbit/s per lane */ + .repetition = 0x10, + .tclkpost = 87, + .thszero = 55, + .thsprepare = 31, + .tclktrail = 31, + .thstrail = 31, + .tclkzero = 119, + .tclkprepare = 31, + .tlpx = 23, +}; + +static const struct imx290_csi_cfg imx290_csi_445_5mhz = { + /* 445.5MHz or 891Mbit/s per lane */ + .repetition = 0x00, + .tclkpost = 119, + .thszero = 103, + .thsprepare = 71, + .tclktrail = 55, + .thstrail = 63, + .tclkzero = 255, + .tclkprepare = 63, + .tlpx = 55, +}; + +static const struct imx290_csi_cfg imx290_csi_148_5mhz = { + /* 148.5MHz or 297Mbit/s per lane */ + .repetition = 0x10, + .tclkpost = 79, + .thszero = 47, + .thsprepare = 23, + .tclktrail = 23, + .thstrail = 23, + .tclkzero = 87, + .tclkprepare = 23, + .tlpx = 23, +}; + +static const struct imx290_csi_cfg imx290_csi_297mhz = { + /* 297MHz or 594Mbit/s per lane */ + .repetition = 0x00, + .tclkpost = 103, + .thszero = 87, + .thsprepare = 47, + .tclktrail = 39, + .thstrail = 47, + .tclkzero = 191, + .tclkprepare = 47, + .tlpx = 39, +}; + +/* supported link frequencies */ +#define FREQ_INDEX_1080P 0 +#define FREQ_INDEX_720P 1 +static const s64 imx290_link_freq_2lanes[] = { + [FREQ_INDEX_1080P] = 445500000, + [FREQ_INDEX_720P] = 297000000, +}; + +static const s64 imx290_link_freq_4lanes[] = { + [FREQ_INDEX_1080P] = 222750000, + [FREQ_INDEX_720P] = 148500000, +}; + +/* + * In this function and in the similar ones below We rely on imx290_probe() + * to ensure that nlanes is either 2 or 4. + */ +static inline const s64 *imx290_link_freqs_ptr(const struct imx290 *imx290) +{ + if (imx290->nlanes == 2) + return imx290_link_freq_2lanes; + else + return imx290_link_freq_4lanes; +} + +static inline int imx290_link_freqs_num(const struct imx290 *imx290) +{ + if (imx290->nlanes == 2) + return ARRAY_SIZE(imx290_link_freq_2lanes); + else + return ARRAY_SIZE(imx290_link_freq_4lanes); +} + +static const struct imx290_clk_cfg imx290_1080p_clock_config[] = { + [IMX290_CLK_37_125] = { + /* 37.125MHz clock config */ + .incksel1 = 0x18, + .incksel2 = 0x03, + .incksel3 = 0x20, + .incksel4 = 0x01, + .incksel5 = 0x1a, + .incksel6 = 0x1a, + }, + [IMX290_CLK_74_25] = { + /* 74.25MHz clock config */ + .incksel1 = 0x0c, + .incksel2 = 0x03, + .incksel3 = 0x10, + .incksel4 = 0x01, + .incksel5 = 0x1b, + .incksel6 = 0x1b, + }, +}; + +static const struct imx290_clk_cfg imx290_720p_clock_config[] = { + [IMX290_CLK_37_125] = { + /* 37.125MHz clock config */ + .incksel1 = 0x20, + .incksel2 = 0x00, + .incksel3 = 0x20, + .incksel4 = 0x01, + .incksel5 = 0x1a, + .incksel6 = 0x1a, + }, + [IMX290_CLK_74_25] = { + /* 74.25MHz clock config */ + .incksel1 = 0x10, + .incksel2 = 0x00, + .incksel3 = 0x10, + .incksel4 = 0x01, + .incksel5 = 0x1b, + .incksel6 = 0x1b, + }, +}; + +/* Mode configs */ +static const struct imx290_mode imx290_modes_2lanes[] = { + { + .width = 1920, + .height = 1080, + .hmax_min = 2200, + .vmax_min = 1125, + .link_freq_index = FREQ_INDEX_1080P, + .ctrl_07 = IMX290_WINMODE_1080P, + .data = imx290_1080p_settings, + .data_size = ARRAY_SIZE(imx290_1080p_settings), + .clk_cfg = imx290_1080p_clock_config, + }, + { + .width = 1280, + .height = 720, + .hmax_min = 3300, + .vmax_min = 750, + .link_freq_index = FREQ_INDEX_720P, + .ctrl_07 = IMX290_WINMODE_720P, + .data = imx290_720p_settings, + .data_size = ARRAY_SIZE(imx290_720p_settings), + .clk_cfg = imx290_720p_clock_config, + }, +}; + +static const struct imx290_mode imx290_modes_4lanes[] = { + { + .width = 1920, + .height = 1080, + .hmax_min = 2200, + .vmax_min = 1125, + .link_freq_index = FREQ_INDEX_1080P, + .ctrl_07 = IMX290_WINMODE_1080P, + .data = imx290_1080p_settings, + .data_size = ARRAY_SIZE(imx290_1080p_settings), + .clk_cfg = imx290_1080p_clock_config, + }, + { + .width = 1280, + .height = 720, + .hmax_min = 3300, + .vmax_min = 750, + .link_freq_index = FREQ_INDEX_720P, + .ctrl_07 = IMX290_WINMODE_720P, + .data = imx290_720p_settings, + .data_size = ARRAY_SIZE(imx290_720p_settings), + .clk_cfg = imx290_720p_clock_config, + }, +}; + +static inline const struct imx290_mode *imx290_modes_ptr(const struct imx290 *imx290) +{ + if (imx290->nlanes == 2) + return imx290_modes_2lanes; + else + return imx290_modes_4lanes; +} + +static inline int imx290_modes_num(const struct imx290 *imx290) +{ + if (imx290->nlanes == 2) + return ARRAY_SIZE(imx290_modes_2lanes); + else + return ARRAY_SIZE(imx290_modes_4lanes); +} + +struct imx290_format_info { + u32 code[IMX290_VARIANT_MAX]; + u8 bpp; + const struct cci_reg_sequence *regs; + unsigned int num_regs; +}; + +static const struct imx290_format_info imx290_formats[] = { + { + .code = { + [IMX290_VARIANT_COLOUR] = MEDIA_BUS_FMT_SRGGB10_1X10, + [IMX290_VARIANT_MONO] = MEDIA_BUS_FMT_Y10_1X10 + }, + .bpp = 10, + .regs = imx290_10bit_settings, + .num_regs = ARRAY_SIZE(imx290_10bit_settings), + }, { + .code = { + [IMX290_VARIANT_COLOUR] = MEDIA_BUS_FMT_SRGGB12_1X12, + [IMX290_VARIANT_MONO] = MEDIA_BUS_FMT_Y12_1X12 + }, + .bpp = 12, + .regs = imx290_12bit_settings, + .num_regs = ARRAY_SIZE(imx290_12bit_settings), + } +}; + +static const struct imx290_format_info * +imx290_format_info(const struct imx290 *imx290, u32 code) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(imx290_formats); ++i) { + const struct imx290_format_info *info = &imx290_formats[i]; + + if (info->code[imx290->model->colour_variant] == code) + return info; + } + + return NULL; +} + +static int imx290_set_register_array(struct imx290 *imx290, + const struct cci_reg_sequence *settings, + unsigned int num_settings) +{ + int ret; + + ret = cci_multi_reg_write(imx290->regmap, settings, num_settings, NULL); + if (ret < 0) + return ret; + + /* Provide 10ms settle time */ + usleep_range(10000, 11000); + + return 0; +} + +static int imx290_set_clock(struct imx290 *imx290) +{ + const struct imx290_mode *mode = imx290->current_mode; + enum imx290_clk_freq clk_idx = imx290->xclk_idx; + const struct imx290_clk_cfg *clk_cfg = &mode->clk_cfg[clk_idx]; + int ret; + + ret = imx290_set_register_array(imx290, xclk_regs[clk_idx], + IMX290_NUM_CLK_REGS); + + cci_write(imx290->regmap, IMX290_INCKSEL1, clk_cfg->incksel1, &ret); + cci_write(imx290->regmap, IMX290_INCKSEL2, clk_cfg->incksel2, &ret); + cci_write(imx290->regmap, IMX290_INCKSEL3, clk_cfg->incksel3, &ret); + cci_write(imx290->regmap, IMX290_INCKSEL4, clk_cfg->incksel4, &ret); + cci_write(imx290->regmap, IMX290_INCKSEL5, clk_cfg->incksel5, &ret); + cci_write(imx290->regmap, IMX290_INCKSEL6, clk_cfg->incksel6, &ret); + + return ret; +} + +static int imx290_set_data_lanes(struct imx290 *imx290) +{ + int ret = 0; + + cci_write(imx290->regmap, IMX290_PHY_LANE_NUM, imx290->nlanes - 1, + &ret); + cci_write(imx290->regmap, IMX290_CSI_LANE_MODE, imx290->nlanes - 1, + &ret); + cci_write(imx290->regmap, IMX290_FR_FDG_SEL, 0x01, &ret); + + return ret; +} + +static int imx290_set_black_level(struct imx290 *imx290, + const struct v4l2_mbus_framefmt *format, + unsigned int black_level, int *err) +{ + unsigned int bpp = imx290_format_info(imx290, format->code)->bpp; + + return cci_write(imx290->regmap, IMX290_BLKLEVEL, + black_level >> (16 - bpp), err); +} + +static int imx290_set_csi_config(struct imx290 *imx290) +{ + const s64 *link_freqs = imx290_link_freqs_ptr(imx290); + const struct imx290_csi_cfg *csi_cfg; + int ret = 0; + + switch (link_freqs[imx290->current_mode->link_freq_index]) { + case 445500000: + csi_cfg = &imx290_csi_445_5mhz; + break; + case 297000000: + csi_cfg = &imx290_csi_297mhz; + break; + case 222750000: + csi_cfg = &imx290_csi_222_75mhz; + break; + case 148500000: + csi_cfg = &imx290_csi_148_5mhz; + break; + default: + return -EINVAL; + } + + cci_write(imx290->regmap, IMX290_REPETITION, csi_cfg->repetition, &ret); + cci_write(imx290->regmap, IMX290_TCLKPOST, csi_cfg->tclkpost, &ret); + cci_write(imx290->regmap, IMX290_THSZERO, csi_cfg->thszero, &ret); + cci_write(imx290->regmap, IMX290_THSPREPARE, csi_cfg->thsprepare, &ret); + cci_write(imx290->regmap, IMX290_TCLKTRAIL, csi_cfg->tclktrail, &ret); + cci_write(imx290->regmap, IMX290_THSTRAIL, csi_cfg->thstrail, &ret); + cci_write(imx290->regmap, IMX290_TCLKZERO, csi_cfg->tclkzero, &ret); + cci_write(imx290->regmap, IMX290_TCLKPREPARE, csi_cfg->tclkprepare, + &ret); + cci_write(imx290->regmap, IMX290_TLPX, csi_cfg->tlpx, &ret); + + return ret; +} + +static int imx290_setup_format(struct imx290 *imx290, + const struct v4l2_mbus_framefmt *format) +{ + const struct imx290_format_info *info; + int ret; + + info = imx290_format_info(imx290, format->code); + + ret = imx290_set_register_array(imx290, info->regs, info->num_regs); + if (ret < 0) { + dev_err(imx290->dev, "Could not set format registers\n"); + return ret; + } + + return imx290_set_black_level(imx290, format, + IMX290_BLACK_LEVEL_DEFAULT, &ret); +} + +/* ---------------------------------------------------------------------------- + * Controls + */ +static void imx290_exposure_update(struct imx290 *imx290, + const struct imx290_mode *mode) +{ + unsigned int exposure_max; + + exposure_max = imx290->vblank->val + mode->height - + IMX290_EXPOSURE_OFFSET; + __v4l2_ctrl_modify_range(imx290->exposure, 1, exposure_max, 1, + exposure_max); +} + +static int imx290_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct imx290 *imx290 = container_of(ctrl->handler, + struct imx290, ctrls); + const struct v4l2_mbus_framefmt *format; + struct v4l2_subdev_state *state; + int ret = 0, vmax; + + /* + * Return immediately for controls that don't need to be applied to the + * device. + */ + if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) + return 0; + + if (ctrl->id == V4L2_CID_VBLANK) { + /* Changing vblank changes the allowed range for exposure. */ + imx290_exposure_update(imx290, imx290->current_mode); + } + + /* V4L2 controls values will be applied only when power is already up */ + if (!pm_runtime_get_if_in_use(imx290->dev)) + return 0; + + state = v4l2_subdev_get_locked_active_state(&imx290->sd); + format = v4l2_subdev_get_pad_format(&imx290->sd, state, 0); + + switch (ctrl->id) { + case V4L2_CID_ANALOGUE_GAIN: + ret = cci_write(imx290->regmap, IMX290_GAIN, ctrl->val, NULL); + break; + + case V4L2_CID_VBLANK: + ret = cci_write(imx290->regmap, IMX290_VMAX, + ctrl->val + imx290->current_mode->height, NULL); + /* + * Due to the way that exposure is programmed in this sensor in + * relation to VMAX, we have to reprogramme it whenever VMAX is + * changed. + * Update ctrl so that the V4L2_CID_EXPOSURE case can refer to + * it. + */ + ctrl = imx290->exposure; + fallthrough; + case V4L2_CID_EXPOSURE: + vmax = imx290->vblank->val + imx290->current_mode->height; + ret = cci_write(imx290->regmap, IMX290_SHS1, + vmax - ctrl->val - 1, NULL); + break; + + case V4L2_CID_TEST_PATTERN: + if (ctrl->val) { + imx290_set_black_level(imx290, format, 0, &ret); + usleep_range(10000, 11000); + cci_write(imx290->regmap, IMX290_PGCTRL, + (u8)(IMX290_PGCTRL_REGEN | + IMX290_PGCTRL_THRU | + IMX290_PGCTRL_MODE(ctrl->val)), &ret); + } else { + cci_write(imx290->regmap, IMX290_PGCTRL, 0x00, &ret); + usleep_range(10000, 11000); + imx290_set_black_level(imx290, format, + IMX290_BLACK_LEVEL_DEFAULT, &ret); + } + break; + + case V4L2_CID_HBLANK: + ret = cci_write(imx290->regmap, IMX290_HMAX, + ctrl->val + imx290->current_mode->width, NULL); + break; + + case V4L2_CID_HFLIP: + case V4L2_CID_VFLIP: + { + u32 reg; + + reg = imx290->current_mode->ctrl_07; + if (imx290->hflip->val) + reg |= IMX290_HREVERSE; + if (imx290->vflip->val) + reg |= IMX290_VREVERSE; + ret = cci_write(imx290->regmap, IMX290_CTRL_07, reg, NULL); + break; + } + + default: + ret = -EINVAL; + break; + } + + pm_runtime_mark_last_busy(imx290->dev); + pm_runtime_put_autosuspend(imx290->dev); + + return ret; +} + +static const struct v4l2_ctrl_ops imx290_ctrl_ops = { + .s_ctrl = imx290_set_ctrl, +}; + +static const char * const imx290_test_pattern_menu[] = { + "Disabled", + "Sequence Pattern 1", + "Horizontal Color-bar Chart", + "Vertical Color-bar Chart", + "Sequence Pattern 2", + "Gradation Pattern 1", + "Gradation Pattern 2", + "000/555h Toggle Pattern", +}; + +static void imx290_ctrl_update(struct imx290 *imx290, + const struct imx290_mode *mode) +{ + unsigned int hblank_min = mode->hmax_min - mode->width; + unsigned int hblank_max = IMX290_HMAX_MAX - mode->width; + unsigned int vblank_min = mode->vmax_min - mode->height; + unsigned int vblank_max = IMX290_VMAX_MAX - mode->height; + + __v4l2_ctrl_s_ctrl(imx290->link_freq, mode->link_freq_index); + + __v4l2_ctrl_modify_range(imx290->hblank, hblank_min, hblank_max, 1, + hblank_min); + __v4l2_ctrl_modify_range(imx290->vblank, vblank_min, vblank_max, 1, + vblank_min); +} + +static int imx290_ctrl_init(struct imx290 *imx290) +{ + struct v4l2_fwnode_device_properties props; + int ret; + + ret = v4l2_fwnode_device_parse(imx290->dev, &props); + if (ret < 0) + return ret; + + v4l2_ctrl_handler_init(&imx290->ctrls, 11); + + /* + * The sensor has an analog gain and a digital gain, both controlled + * through a single gain value, expressed in 0.3dB increments. Values + * from 0.0dB (0) to 30.0dB (100) apply analog gain only, higher values + * up to 72.0dB (240) add further digital gain. Limit the range to + * analog gain only, support for digital gain can be added separately + * if needed. + * + * The IMX327 and IMX462 are largely compatible with the IMX290, but + * have an analog gain range of 0.0dB to 29.4dB and 42dB of digital + * gain. When support for those sensors gets added to the driver, the + * gain control should be adjusted accordingly. + */ + v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops, + V4L2_CID_ANALOGUE_GAIN, 0, 100, 1, 0); + + /* + * Correct range will be determined through imx290_ctrl_update setting + * V4L2_CID_VBLANK. + */ + imx290->exposure = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops, + V4L2_CID_EXPOSURE, 1, 65535, 1, + 65535); + + /* + * Set the link frequency, pixel rate, horizontal blanking and vertical + * blanking to hardcoded values, they will be updated by + * imx290_ctrl_update(). + */ + imx290->link_freq = + v4l2_ctrl_new_int_menu(&imx290->ctrls, &imx290_ctrl_ops, + V4L2_CID_LINK_FREQ, + imx290_link_freqs_num(imx290) - 1, 0, + imx290_link_freqs_ptr(imx290)); + if (imx290->link_freq) + imx290->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops, V4L2_CID_PIXEL_RATE, + IMX290_PIXEL_RATE, IMX290_PIXEL_RATE, 1, + IMX290_PIXEL_RATE); + + v4l2_ctrl_new_std_menu_items(&imx290->ctrls, &imx290_ctrl_ops, + V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(imx290_test_pattern_menu) - 1, + 0, 0, imx290_test_pattern_menu); + + /* + * Actual range will be set from imx290_ctrl_update later in the probe. + */ + imx290->hblank = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops, + V4L2_CID_HBLANK, 1, 1, 1, 1); + + imx290->vblank = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops, + V4L2_CID_VBLANK, 1, 1, 1, 1); + + imx290->hflip = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops, + V4L2_CID_HFLIP, 0, 1, 1, 0); + imx290->vflip = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops, + V4L2_CID_VFLIP, 0, 1, 1, 0); + v4l2_ctrl_cluster(2, &imx290->hflip); + + v4l2_ctrl_new_fwnode_properties(&imx290->ctrls, &imx290_ctrl_ops, + &props); + + imx290->sd.ctrl_handler = &imx290->ctrls; + + if (imx290->ctrls.error) { + ret = imx290->ctrls.error; + v4l2_ctrl_handler_free(&imx290->ctrls); + return ret; + } + + return 0; +} + +/* ---------------------------------------------------------------------------- + * Subdev operations + */ + +/* Start streaming */ +static int imx290_start_streaming(struct imx290 *imx290, + struct v4l2_subdev_state *state) +{ + const struct v4l2_mbus_framefmt *format; + int ret; + + /* Set init register settings */ + ret = imx290_set_register_array(imx290, imx290_global_init_settings, + ARRAY_SIZE(imx290_global_init_settings)); + if (ret < 0) { + dev_err(imx290->dev, "Could not set init registers\n"); + return ret; + } + + /* Set mdel specific init register settings */ + ret = imx290_set_register_array(imx290, imx290->model->init_regs, + imx290->model->init_regs_num); + if (ret < 0) { + dev_err(imx290->dev, "Could not set model specific init registers\n"); + return ret; + } + + /* Set clock parameters based on mode and xclk */ + ret = imx290_set_clock(imx290); + if (ret < 0) { + dev_err(imx290->dev, "Could not set clocks - %d\n", ret); + return ret; + } + + /* Set data lane count */ + ret = imx290_set_data_lanes(imx290); + if (ret < 0) { + dev_err(imx290->dev, "Could not set data lanes - %d\n", ret); + return ret; + } + + ret = imx290_set_csi_config(imx290); + if (ret < 0) { + dev_err(imx290->dev, "Could not set csi cfg - %d\n", ret); + return ret; + } + + /* Apply the register values related to current frame format */ + format = v4l2_subdev_get_pad_format(&imx290->sd, state, 0); + ret = imx290_setup_format(imx290, format); + if (ret < 0) { + dev_err(imx290->dev, "Could not set frame format - %d\n", ret); + return ret; + } + + /* Apply default values of current mode */ + ret = imx290_set_register_array(imx290, imx290->current_mode->data, + imx290->current_mode->data_size); + if (ret < 0) { + dev_err(imx290->dev, "Could not set current mode - %d\n", ret); + return ret; + } + + /* Apply customized values from user */ + ret = __v4l2_ctrl_handler_setup(imx290->sd.ctrl_handler); + if (ret) { + dev_err(imx290->dev, "Could not sync v4l2 controls - %d\n", ret); + return ret; + } + + cci_write(imx290->regmap, IMX290_STANDBY, 0x00, &ret); + + msleep(30); + + /* Start streaming */ + return cci_write(imx290->regmap, IMX290_XMSTA, 0x00, &ret); +} + +/* Stop streaming */ +static int imx290_stop_streaming(struct imx290 *imx290) +{ + int ret = 0; + + cci_write(imx290->regmap, IMX290_STANDBY, 0x01, &ret); + + msleep(30); + + return cci_write(imx290->regmap, IMX290_XMSTA, 0x01, &ret); +} + +static int imx290_set_stream(struct v4l2_subdev *sd, int enable) +{ + struct imx290 *imx290 = to_imx290(sd); + struct v4l2_subdev_state *state; + int ret = 0; + + state = v4l2_subdev_lock_and_get_active_state(sd); + + if (enable) { + ret = pm_runtime_resume_and_get(imx290->dev); + if (ret < 0) + goto unlock; + + ret = imx290_start_streaming(imx290, state); + if (ret) { + dev_err(imx290->dev, "Start stream failed\n"); + pm_runtime_put_sync(imx290->dev); + goto unlock; + } + } else { + imx290_stop_streaming(imx290); + pm_runtime_mark_last_busy(imx290->dev); + pm_runtime_put_autosuspend(imx290->dev); + } + + /* + * vflip and hflip should not be changed during streaming as the sensor + * will produce an invalid frame. + */ + __v4l2_ctrl_grab(imx290->vflip, enable); + __v4l2_ctrl_grab(imx290->hflip, enable); + +unlock: + v4l2_subdev_unlock_state(state); + return ret; +} + +static int imx290_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_mbus_code_enum *code) +{ + const struct imx290 *imx290 = to_imx290(sd); + + if (code->index >= ARRAY_SIZE(imx290_formats)) + return -EINVAL; + + code->code = imx290_formats[code->index].code[imx290->model->colour_variant]; + + return 0; +} + +static int imx290_enum_frame_size(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_frame_size_enum *fse) +{ + const struct imx290 *imx290 = to_imx290(sd); + const struct imx290_mode *imx290_modes = imx290_modes_ptr(imx290); + + if (!imx290_format_info(imx290, fse->code)) + return -EINVAL; + + if (fse->index >= imx290_modes_num(imx290)) + return -EINVAL; + + fse->min_width = imx290_modes[fse->index].width; + fse->max_width = imx290_modes[fse->index].width; + fse->min_height = imx290_modes[fse->index].height; + fse->max_height = imx290_modes[fse->index].height; + + return 0; +} + +static int imx290_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct imx290 *imx290 = to_imx290(sd); + const struct imx290_mode *mode; + struct v4l2_mbus_framefmt *format; + + mode = v4l2_find_nearest_size(imx290_modes_ptr(imx290), + imx290_modes_num(imx290), width, height, + fmt->format.width, fmt->format.height); + + fmt->format.width = mode->width; + fmt->format.height = mode->height; + + if (!imx290_format_info(imx290, fmt->format.code)) + fmt->format.code = imx290_formats[0].code[imx290->model->colour_variant]; + + fmt->format.field = V4L2_FIELD_NONE; + fmt->format.colorspace = V4L2_COLORSPACE_RAW; + fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_601; + fmt->format.quantization = V4L2_QUANTIZATION_FULL_RANGE; + fmt->format.xfer_func = V4L2_XFER_FUNC_NONE; + + format = v4l2_subdev_get_pad_format(sd, sd_state, 0); + + if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { + imx290->current_mode = mode; + + imx290_ctrl_update(imx290, mode); + imx290_exposure_update(imx290, mode); + } + + *format = fmt->format; + + return 0; +} + +static int imx290_get_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_selection *sel) +{ + struct imx290 *imx290 = to_imx290(sd); + struct v4l2_mbus_framefmt *format; + + switch (sel->target) { + case V4L2_SEL_TGT_CROP: { + format = v4l2_subdev_get_pad_format(sd, sd_state, 0); + + /* + * The sensor moves the readout by 1 pixel based on flips to + * keep the Bayer order the same. + */ + sel->r.top = IMX920_PIXEL_ARRAY_MARGIN_TOP + + (IMX290_PIXEL_ARRAY_RECORDING_HEIGHT - format->height) / 2 + + imx290->vflip->val; + sel->r.left = IMX920_PIXEL_ARRAY_MARGIN_LEFT + + (IMX290_PIXEL_ARRAY_RECORDING_WIDTH - format->width) / 2 + + imx290->hflip->val; + sel->r.width = format->width; + sel->r.height = format->height; + + return 0; + } + + case V4L2_SEL_TGT_NATIVE_SIZE: + case V4L2_SEL_TGT_CROP_BOUNDS: + sel->r.top = 0; + sel->r.left = 0; + sel->r.width = IMX290_PIXEL_ARRAY_WIDTH; + sel->r.height = IMX290_PIXEL_ARRAY_HEIGHT; + + return 0; + + case V4L2_SEL_TGT_CROP_DEFAULT: + sel->r.top = IMX920_PIXEL_ARRAY_MARGIN_TOP; + sel->r.left = IMX920_PIXEL_ARRAY_MARGIN_LEFT; + sel->r.width = IMX290_PIXEL_ARRAY_RECORDING_WIDTH; + sel->r.height = IMX290_PIXEL_ARRAY_RECORDING_HEIGHT; + + return 0; + + default: + return -EINVAL; + } +} + +static int imx290_entity_init_cfg(struct v4l2_subdev *subdev, + struct v4l2_subdev_state *sd_state) +{ + struct v4l2_subdev_format fmt = { + .which = V4L2_SUBDEV_FORMAT_TRY, + .format = { + .width = 1920, + .height = 1080, + }, + }; + + imx290_set_fmt(subdev, sd_state, &fmt); + + return 0; +} + +static const struct v4l2_subdev_core_ops imx290_core_ops = { + .subscribe_event = v4l2_ctrl_subdev_subscribe_event, + .unsubscribe_event = v4l2_event_subdev_unsubscribe, +}; + +static const struct v4l2_subdev_video_ops imx290_video_ops = { + .s_stream = imx290_set_stream, +}; + +static const struct v4l2_subdev_pad_ops imx290_pad_ops = { + .init_cfg = imx290_entity_init_cfg, + .enum_mbus_code = imx290_enum_mbus_code, + .enum_frame_size = imx290_enum_frame_size, + .get_fmt = v4l2_subdev_get_fmt, + .set_fmt = imx290_set_fmt, + .get_selection = imx290_get_selection, +}; + +static const struct v4l2_subdev_ops imx290_subdev_ops = { + .core = &imx290_core_ops, + .video = &imx290_video_ops, + .pad = &imx290_pad_ops, +}; + +static const struct media_entity_operations imx290_subdev_entity_ops = { + .link_validate = v4l2_subdev_link_validate, +}; + +static int imx290_subdev_init(struct imx290 *imx290) +{ + struct i2c_client *client = to_i2c_client(imx290->dev); + struct v4l2_subdev_state *state; + int ret; + + imx290->current_mode = &imx290_modes_ptr(imx290)[0]; + + v4l2_i2c_subdev_init(&imx290->sd, client, &imx290_subdev_ops); + imx290->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | + V4L2_SUBDEV_FL_HAS_EVENTS; + imx290->sd.dev = imx290->dev; + imx290->sd.entity.ops = &imx290_subdev_entity_ops; + imx290->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; + + imx290->pad.flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_pads_init(&imx290->sd.entity, 1, &imx290->pad); + if (ret < 0) { + dev_err(imx290->dev, "Could not register media entity\n"); + return ret; + } + + ret = imx290_ctrl_init(imx290); + if (ret < 0) { + dev_err(imx290->dev, "Control initialization error %d\n", ret); + goto err_media; + } + + imx290->sd.state_lock = imx290->ctrls.lock; + + ret = v4l2_subdev_init_finalize(&imx290->sd); + if (ret < 0) { + dev_err(imx290->dev, "subdev initialization error %d\n", ret); + goto err_ctrls; + } + + state = v4l2_subdev_lock_and_get_active_state(&imx290->sd); + imx290_ctrl_update(imx290, imx290->current_mode); + v4l2_subdev_unlock_state(state); + + return 0; + +err_ctrls: + v4l2_ctrl_handler_free(&imx290->ctrls); +err_media: + media_entity_cleanup(&imx290->sd.entity); + return ret; +} + +static void imx290_subdev_cleanup(struct imx290 *imx290) +{ + v4l2_subdev_cleanup(&imx290->sd); + media_entity_cleanup(&imx290->sd.entity); + v4l2_ctrl_handler_free(&imx290->ctrls); +} + +/* ---------------------------------------------------------------------------- + * Power management + */ + +static int imx290_power_on(struct imx290 *imx290) +{ + int ret; + + ret = clk_prepare_enable(imx290->xclk); + if (ret) { + dev_err(imx290->dev, "Failed to enable clock\n"); + return ret; + } + + ret = regulator_bulk_enable(ARRAY_SIZE(imx290->supplies), + imx290->supplies); + if (ret) { + dev_err(imx290->dev, "Failed to enable regulators\n"); + clk_disable_unprepare(imx290->xclk); + return ret; + } + + usleep_range(1, 2); + gpiod_set_value_cansleep(imx290->rst_gpio, 0); + usleep_range(30000, 31000); + + return 0; +} + +static void imx290_power_off(struct imx290 *imx290) +{ + clk_disable_unprepare(imx290->xclk); + gpiod_set_value_cansleep(imx290->rst_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(imx290->supplies), imx290->supplies); +} + +static int imx290_runtime_resume(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct imx290 *imx290 = to_imx290(sd); + + return imx290_power_on(imx290); +} + +static int imx290_runtime_suspend(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct imx290 *imx290 = to_imx290(sd); + + imx290_power_off(imx290); + + return 0; +} + +static const struct dev_pm_ops imx290_pm_ops = { + RUNTIME_PM_OPS(imx290_runtime_suspend, imx290_runtime_resume, NULL) +}; + +/* ---------------------------------------------------------------------------- + * Probe & remove + */ + +static const char * const imx290_supply_name[IMX290_NUM_SUPPLIES] = { + "vdda", + "vddd", + "vdddo", +}; + +static int imx290_get_regulators(struct device *dev, struct imx290 *imx290) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(imx290->supplies); i++) + imx290->supplies[i].supply = imx290_supply_name[i]; + + return devm_regulator_bulk_get(dev, ARRAY_SIZE(imx290->supplies), + imx290->supplies); +} + +static int imx290_init_clk(struct imx290 *imx290) +{ + u32 xclk_freq; + int ret; + + ret = device_property_read_u32(imx290->dev, "clock-frequency", + &xclk_freq); + if (ret) { + dev_err(imx290->dev, "Could not get xclk frequency\n"); + return ret; + } + + /* external clock must be 37.125 MHz or 74.25MHz */ + switch (xclk_freq) { + case 37125000: + imx290->xclk_idx = IMX290_CLK_37_125; + break; + case 74250000: + imx290->xclk_idx = IMX290_CLK_74_25; + break; + default: + dev_err(imx290->dev, "External clock frequency %u is not supported\n", + xclk_freq); + return -EINVAL; + } + + ret = clk_set_rate(imx290->xclk, xclk_freq); + if (ret) { + dev_err(imx290->dev, "Could not set xclk frequency\n"); + return ret; + } + + return 0; +} + +/* + * Returns 0 if all link frequencies used by the driver for the given number + * of MIPI data lanes are mentioned in the device tree, or the value of the + * first missing frequency otherwise. + */ +static s64 imx290_check_link_freqs(const struct imx290 *imx290, + const struct v4l2_fwnode_endpoint *ep) +{ + int i, j; + const s64 *freqs = imx290_link_freqs_ptr(imx290); + int freqs_count = imx290_link_freqs_num(imx290); + + for (i = 0; i < freqs_count; i++) { + for (j = 0; j < ep->nr_of_link_frequencies; j++) + if (freqs[i] == ep->link_frequencies[j]) + break; + if (j == ep->nr_of_link_frequencies) + return freqs[i]; + } + return 0; +} + +static const struct imx290_model_info imx290_models[] = { + [IMX290_MODEL_IMX290LQR] = { + .colour_variant = IMX290_VARIANT_COLOUR, + .init_regs = imx290_global_init_settings_290, + .init_regs_num = ARRAY_SIZE(imx290_global_init_settings_290), + .name = "imx290", + }, + [IMX290_MODEL_IMX290LLR] = { + .colour_variant = IMX290_VARIANT_MONO, + .init_regs = imx290_global_init_settings_290, + .init_regs_num = ARRAY_SIZE(imx290_global_init_settings_290), + .name = "imx290", + }, + [IMX290_MODEL_IMX327LQR] = { + .colour_variant = IMX290_VARIANT_COLOUR, + .init_regs = imx290_global_init_settings_327, + .init_regs_num = ARRAY_SIZE(imx290_global_init_settings_327), + .name = "imx327", + }, +}; + +static int imx290_parse_dt(struct imx290 *imx290) +{ + /* Only CSI2 is supported for now: */ + struct v4l2_fwnode_endpoint ep = { + .bus_type = V4L2_MBUS_CSI2_DPHY + }; + struct fwnode_handle *endpoint; + int ret; + s64 fq; + + imx290->model = of_device_get_match_data(imx290->dev); + + endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(imx290->dev), NULL); + if (!endpoint) { + dev_err(imx290->dev, "Endpoint node not found\n"); + return -EINVAL; + } + + ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep); + fwnode_handle_put(endpoint); + if (ret == -ENXIO) { + dev_err(imx290->dev, "Unsupported bus type, should be CSI2\n"); + goto done; + } else if (ret) { + dev_err(imx290->dev, "Parsing endpoint node failed\n"); + goto done; + } + + /* Get number of data lanes */ + imx290->nlanes = ep.bus.mipi_csi2.num_data_lanes; + if (imx290->nlanes != 2 && imx290->nlanes != 4) { + dev_err(imx290->dev, "Invalid data lanes: %d\n", imx290->nlanes); + ret = -EINVAL; + goto done; + } + + dev_dbg(imx290->dev, "Using %u data lanes\n", imx290->nlanes); + + if (!ep.nr_of_link_frequencies) { + dev_err(imx290->dev, "link-frequency property not found in DT\n"); + ret = -EINVAL; + goto done; + } + + /* Check that link frequences for all the modes are in device tree */ + fq = imx290_check_link_freqs(imx290, &ep); + if (fq) { + dev_err(imx290->dev, "Link frequency of %lld is not supported\n", + fq); + ret = -EINVAL; + goto done; + } + + ret = 0; + +done: + v4l2_fwnode_endpoint_free(&ep); + return ret; +} + +static int imx290_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct imx290 *imx290; + int ret; + + imx290 = devm_kzalloc(dev, sizeof(*imx290), GFP_KERNEL); + if (!imx290) + return -ENOMEM; + + imx290->dev = dev; + imx290->regmap = devm_cci_regmap_init_i2c(client, 16); + if (IS_ERR(imx290->regmap)) { + dev_err(dev, "Unable to initialize I2C\n"); + return -ENODEV; + } + + ret = imx290_parse_dt(imx290); + if (ret) + return ret; + + /* Acquire resources. */ + imx290->xclk = devm_clk_get(dev, "xclk"); + if (IS_ERR(imx290->xclk)) + return dev_err_probe(dev, PTR_ERR(imx290->xclk), + "Could not get xclk\n"); + + ret = imx290_get_regulators(dev, imx290); + if (ret < 0) + return dev_err_probe(dev, ret, "Cannot get regulators\n"); + + imx290->rst_gpio = devm_gpiod_get_optional(dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(imx290->rst_gpio)) + return dev_err_probe(dev, PTR_ERR(imx290->rst_gpio), + "Cannot get reset gpio\n"); + + /* Initialize external clock frequency. */ + ret = imx290_init_clk(imx290); + if (ret) + return ret; + + /* + * Enable power management. The driver supports runtime PM, but needs to + * work when runtime PM is disabled in the kernel. To that end, power + * the sensor on manually here. + */ + ret = imx290_power_on(imx290); + if (ret < 0) { + dev_err(dev, "Could not power on the device\n"); + return ret; + } + + /* + * Enable runtime PM with autosuspend. As the device has been powered + * manually, mark it as active, and increase the usage count without + * resuming the device. + */ + pm_runtime_set_active(dev); + pm_runtime_get_noresume(dev); + pm_runtime_enable(dev); + pm_runtime_set_autosuspend_delay(dev, 1000); + pm_runtime_use_autosuspend(dev); + + /* Initialize the V4L2 subdev. */ + ret = imx290_subdev_init(imx290); + if (ret) + goto err_pm; + + v4l2_i2c_subdev_set_name(&imx290->sd, client, + imx290->model->name, NULL); + + /* + * Finally, register the V4L2 subdev. This must be done after + * initializing everything as the subdev can be used immediately after + * being registered. + */ + ret = v4l2_async_register_subdev(&imx290->sd); + if (ret < 0) { + dev_err(dev, "Could not register v4l2 device\n"); + goto err_subdev; + } + + /* + * Decrease the PM usage count. The device will get suspended after the + * autosuspend delay, turning the power off. + */ + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + return 0; + +err_subdev: + imx290_subdev_cleanup(imx290); +err_pm: + pm_runtime_disable(dev); + pm_runtime_put_noidle(dev); + imx290_power_off(imx290); + return ret; +} + +static void imx290_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx290 *imx290 = to_imx290(sd); + + v4l2_async_unregister_subdev(sd); + imx290_subdev_cleanup(imx290); + + /* + * Disable runtime PM. In case runtime PM is disabled in the kernel, + * make sure to turn power off manually. + */ + pm_runtime_disable(imx290->dev); + if (!pm_runtime_status_suspended(imx290->dev)) + imx290_power_off(imx290); + pm_runtime_set_suspended(imx290->dev); +} + +static const struct of_device_id imx290_of_match[] = { + { + /* Deprecated - synonym for "sony,imx290lqr" */ + .compatible = "sony,imx290", + .data = &imx290_models[IMX290_MODEL_IMX290LQR], + }, { + .compatible = "sony,imx290lqr", + .data = &imx290_models[IMX290_MODEL_IMX290LQR], + }, { + .compatible = "sony,imx290llr", + .data = &imx290_models[IMX290_MODEL_IMX290LLR], + }, { + .compatible = "sony,imx327lqr", + .data = &imx290_models[IMX290_MODEL_IMX327LQR], + }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, imx290_of_match); + +static struct i2c_driver imx290_i2c_driver = { + .probe = imx290_probe, + .remove = imx290_remove, + .driver = { + .name = "imx290", + .pm = pm_ptr(&imx290_pm_ops), + .of_match_table = imx290_of_match, + }, +}; + +module_i2c_driver(imx290_i2c_driver); + +MODULE_DESCRIPTION("Sony IMX290 CMOS Image Sensor Driver"); +MODULE_AUTHOR("FRAMOS GmbH"); +MODULE_AUTHOR("Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>"); +MODULE_LICENSE("GPL v2"); |