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-rw-r--r--drivers/media/i2c/imx290.c1668
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 0000000000..c6fea5837a
--- /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");