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kernel / pub / scm / linux / kernel / git / akpm / mm / 1c911e4a485cce0573d555ce75c5a3e57becb51c / . / drivers / media / i2c / mt9m114.c
blob: aa3fd6c6c76c802e2929b401b4916fed36abcff4 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0-only
/*
* mt9m114.c onsemi MT9M114 sensor driver
*
* Copyright (c) 2020-2023 Laurent Pinchart <laurent.pinchart@ideasonboard.com>
* Copyright (c) 2012 Analog Devices Inc.
*
* Almost complete rewrite of work by Scott Jiang <Scott.Jiang.Linux@gmail.com>
* itself based on work from Andrew Chew <achew@nvidia.com>.
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/types.h>
#include <linux/videodev2.h>
#include <media/v4l2-async.h>
#include <media/v4l2-cci.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-mediabus.h>
#include <media/v4l2-subdev.h>
/* Sysctl registers */
#define MT9M114_CHIP_ID CCI_REG16(0x0000)
#define MT9M114_COMMAND_REGISTER CCI_REG16(0x0080)
#define MT9M114_COMMAND_REGISTER_APPLY_PATCH BIT(0)
#define MT9M114_COMMAND_REGISTER_SET_STATE BIT(1)
#define MT9M114_COMMAND_REGISTER_REFRESH BIT(2)
#define MT9M114_COMMAND_REGISTER_WAIT_FOR_EVENT BIT(3)
#define MT9M114_COMMAND_REGISTER_OK BIT(15)
#define MT9M114_RESET_AND_MISC_CONTROL CCI_REG16(0x001a)
#define MT9M114_RESET_SOC BIT(0)
#define MT9M114_PAD_SLEW CCI_REG16(0x001e)
#define MT9M114_PAD_CONTROL CCI_REG16(0x0032)
/* XDMA registers */
#define MT9M114_ACCESS_CTL_STAT CCI_REG16(0x0982)
#define MT9M114_PHYSICAL_ADDRESS_ACCESS CCI_REG16(0x098a)
#define MT9M114_LOGICAL_ADDRESS_ACCESS CCI_REG16(0x098e)
/* Sensor Core registers */
#define MT9M114_COARSE_INTEGRATION_TIME CCI_REG16(0x3012)
#define MT9M114_FINE_INTEGRATION_TIME CCI_REG16(0x3014)
#define MT9M114_RESET_REGISTER CCI_REG16(0x301a)
#define MT9M114_RESET_REGISTER_LOCK_REG BIT(3)
#define MT9M114_RESET_REGISTER_MASK_BAD BIT(9)
#define MT9M114_FLASH CCI_REG16(0x3046)
#define MT9M114_GREEN1_GAIN CCI_REG16(0x3056)
#define MT9M114_BLUE_GAIN CCI_REG16(0x3058)
#define MT9M114_RED_GAIN CCI_REG16(0x305a)
#define MT9M114_GREEN2_GAIN CCI_REG16(0x305c)
#define MT9M114_GLOBAL_GAIN CCI_REG16(0x305e)
#define MT9M114_GAIN_DIGITAL_GAIN(n) ((n) << 12)
#define MT9M114_GAIN_DIGITAL_GAIN_MASK (0xf << 12)
#define MT9M114_GAIN_ANALOG_GAIN(n) ((n) << 0)
#define MT9M114_GAIN_ANALOG_GAIN_MASK (0xff << 0)
#define MT9M114_CUSTOMER_REV CCI_REG16(0x31fe)
/* Monitor registers */
#define MT9M114_MON_MAJOR_VERSION CCI_REG16(0x8000)
#define MT9M114_MON_MINOR_VERSION CCI_REG16(0x8002)
#define MT9M114_MON_RELEASE_VERSION CCI_REG16(0x8004)
/* Auto-Exposure Track registers */
#define MT9M114_AE_TRACK_ALGO CCI_REG16(0xa804)
#define MT9M114_AE_TRACK_EXEC_AUTOMATIC_EXPOSURE BIT(0)
#define MT9M114_AE_TRACK_AE_TRACKING_DAMPENING_SPEED CCI_REG8(0xa80a)
/* Color Correction Matrix registers */
#define MT9M114_CCM_ALGO CCI_REG16(0xb404)
#define MT9M114_CCM_EXEC_CALC_CCM_MATRIX BIT(4)
#define MT9M114_CCM_DELTA_GAIN CCI_REG8(0xb42a)
/* Camera Control registers */
#define MT9M114_CAM_SENSOR_CFG_Y_ADDR_START CCI_REG16(0xc800)
#define MT9M114_CAM_SENSOR_CFG_X_ADDR_START CCI_REG16(0xc802)
#define MT9M114_CAM_SENSOR_CFG_Y_ADDR_END CCI_REG16(0xc804)
#define MT9M114_CAM_SENSOR_CFG_X_ADDR_END CCI_REG16(0xc806)
#define MT9M114_CAM_SENSOR_CFG_PIXCLK CCI_REG32(0xc808)
#define MT9M114_CAM_SENSOR_CFG_ROW_SPEED CCI_REG16(0xc80c)
#define MT9M114_CAM_SENSOR_CFG_FINE_INTEG_TIME_MIN CCI_REG16(0xc80e)
#define MT9M114_CAM_SENSOR_CFG_FINE_INTEG_TIME_MAX CCI_REG16(0xc810)
#define MT9M114_CAM_SENSOR_CFG_FRAME_LENGTH_LINES CCI_REG16(0xc812)
#define MT9M114_CAM_SENSOR_CFG_FRAME_LENGTH_LINES_MAX 65535
#define MT9M114_CAM_SENSOR_CFG_LINE_LENGTH_PCK CCI_REG16(0xc814)
#define MT9M114_CAM_SENSOR_CFG_LINE_LENGTH_PCK_MAX 8191
#define MT9M114_CAM_SENSOR_CFG_FINE_CORRECTION CCI_REG16(0xc816)
#define MT9M114_CAM_SENSOR_CFG_CPIPE_LAST_ROW CCI_REG16(0xc818)
#define MT9M114_CAM_SENSOR_CFG_REG_0_DATA CCI_REG16(0xc826)
#define MT9M114_CAM_SENSOR_CONTROL_READ_MODE CCI_REG16(0xc834)
#define MT9M114_CAM_SENSOR_CONTROL_HORZ_MIRROR_EN BIT(0)
#define MT9M114_CAM_SENSOR_CONTROL_VERT_FLIP_EN BIT(1)
#define MT9M114_CAM_SENSOR_CONTROL_X_READ_OUT_NORMAL (0 << 4)
#define MT9M114_CAM_SENSOR_CONTROL_X_READ_OUT_SKIPPING (1 << 4)
#define MT9M114_CAM_SENSOR_CONTROL_X_READ_OUT_AVERAGE (2 << 4)
#define MT9M114_CAM_SENSOR_CONTROL_X_READ_OUT_SUMMING (3 << 4)
#define MT9M114_CAM_SENSOR_CONTROL_X_READ_OUT_MASK (3 << 4)
#define MT9M114_CAM_SENSOR_CONTROL_Y_READ_OUT_NORMAL (0 << 8)
#define MT9M114_CAM_SENSOR_CONTROL_Y_READ_OUT_SKIPPING (1 << 8)
#define MT9M114_CAM_SENSOR_CONTROL_Y_READ_OUT_SUMMING (3 << 8)
#define MT9M114_CAM_SENSOR_CONTROL_Y_READ_OUT_MASK (3 << 8)
#define MT9M114_CAM_SENSOR_CONTROL_ANALOG_GAIN CCI_REG16(0xc836)
#define MT9M114_CAM_SENSOR_CONTROL_COARSE_INTEGRATION_TIME CCI_REG16(0xc83c)
#define MT9M114_CAM_SENSOR_CONTROL_FINE_INTEGRATION_TIME CCI_REG16(0xc83e)
#define MT9M114_CAM_MODE_SELECT CCI_REG8(0xc84c)
#define MT9M114_CAM_MODE_SELECT_NORMAL (0 << 0)
#define MT9M114_CAM_MODE_SELECT_LENS_CALIBRATION (1 << 0)
#define MT9M114_CAM_MODE_SELECT_TEST_PATTERN (2 << 0)
#define MT9M114_CAM_MODE_TEST_PATTERN_SELECT CCI_REG8(0xc84d)
#define MT9M114_CAM_MODE_TEST_PATTERN_SELECT_SOLID (1 << 0)
#define MT9M114_CAM_MODE_TEST_PATTERN_SELECT_SOLID_BARS (4 << 0)
#define MT9M114_CAM_MODE_TEST_PATTERN_SELECT_RANDOM (5 << 0)
#define MT9M114_CAM_MODE_TEST_PATTERN_SELECT_FADING_BARS (8 << 0)
#define MT9M114_CAM_MODE_TEST_PATTERN_SELECT_WALKING_1S_10B (10 << 0)
#define MT9M114_CAM_MODE_TEST_PATTERN_SELECT_WALKING_1S_8B (11 << 0)
#define MT9M114_CAM_MODE_TEST_PATTERN_RED CCI_REG16(0xc84e)
#define MT9M114_CAM_MODE_TEST_PATTERN_GREEN CCI_REG16(0xc850)
#define MT9M114_CAM_MODE_TEST_PATTERN_BLUE CCI_REG16(0xc852)
#define MT9M114_CAM_CROP_WINDOW_XOFFSET CCI_REG16(0xc854)
#define MT9M114_CAM_CROP_WINDOW_YOFFSET CCI_REG16(0xc856)
#define MT9M114_CAM_CROP_WINDOW_WIDTH CCI_REG16(0xc858)
#define MT9M114_CAM_CROP_WINDOW_HEIGHT CCI_REG16(0xc85a)
#define MT9M114_CAM_CROP_CROPMODE CCI_REG8(0xc85c)
#define MT9M114_CAM_CROP_MODE_AE_AUTO_CROP_EN BIT(0)
#define MT9M114_CAM_CROP_MODE_AWB_AUTO_CROP_EN BIT(1)
#define MT9M114_CAM_OUTPUT_WIDTH CCI_REG16(0xc868)
#define MT9M114_CAM_OUTPUT_HEIGHT CCI_REG16(0xc86a)
#define MT9M114_CAM_OUTPUT_FORMAT CCI_REG16(0xc86c)
#define MT9M114_CAM_OUTPUT_FORMAT_SWAP_RED_BLUE BIT(0)
#define MT9M114_CAM_OUTPUT_FORMAT_SWAP_BYTES BIT(1)
#define MT9M114_CAM_OUTPUT_FORMAT_MONO_ENABLE BIT(2)
#define MT9M114_CAM_OUTPUT_FORMAT_BT656_ENABLE BIT(3)
#define MT9M114_CAM_OUTPUT_FORMAT_BT656_CROP_SCALE_DISABLE BIT(4)
#define MT9M114_CAM_OUTPUT_FORMAT_FVLV_DISABLE BIT(5)
#define MT9M114_CAM_OUTPUT_FORMAT_FORMAT_YUV (0 << 8)
#define MT9M114_CAM_OUTPUT_FORMAT_FORMAT_RGB (1 << 8)
#define MT9M114_CAM_OUTPUT_FORMAT_FORMAT_BAYER (2 << 8)
#define MT9M114_CAM_OUTPUT_FORMAT_FORMAT_NONE (3 << 8)
#define MT9M114_CAM_OUTPUT_FORMAT_FORMAT_MASK (3 << 8)
#define MT9M114_CAM_OUTPUT_FORMAT_BAYER_FORMAT_RAWR10 (0 << 10)
#define MT9M114_CAM_OUTPUT_FORMAT_BAYER_FORMAT_PRELSC_8_2 (1 << 10)
#define MT9M114_CAM_OUTPUT_FORMAT_BAYER_FORMAT_POSTLSC_8_2 (2 << 10)
#define MT9M114_CAM_OUTPUT_FORMAT_BAYER_FORMAT_PROCESSED8 (3 << 10)
#define MT9M114_CAM_OUTPUT_FORMAT_BAYER_FORMAT_MASK (3 << 10)
#define MT9M114_CAM_OUTPUT_FORMAT_RGB_FORMAT_565RGB (0 << 12)
#define MT9M114_CAM_OUTPUT_FORMAT_RGB_FORMAT_555RGB (1 << 12)
#define MT9M114_CAM_OUTPUT_FORMAT_RGB_FORMAT_444xRGB (2 << 12)
#define MT9M114_CAM_OUTPUT_FORMAT_RGB_FORMAT_444RGBx (3 << 12)
#define MT9M114_CAM_OUTPUT_FORMAT_RGB_FORMAT_MASK (3 << 12)
#define MT9M114_CAM_OUTPUT_FORMAT_YUV CCI_REG16(0xc86e)
#define MT9M114_CAM_OUTPUT_FORMAT_YUV_CLIP BIT(5)
#define MT9M114_CAM_OUTPUT_FORMAT_YUV_AUV_OFFSET BIT(4)
#define MT9M114_CAM_OUTPUT_FORMAT_YUV_SELECT_601 BIT(3)
#define MT9M114_CAM_OUTPUT_FORMAT_YUV_NORMALISE BIT(2)
#define MT9M114_CAM_OUTPUT_FORMAT_YUV_SAMPLING_EVEN_UV (0 << 0)
#define MT9M114_CAM_OUTPUT_FORMAT_YUV_SAMPLING_ODD_UV (1 << 0)
#define MT9M114_CAM_OUTPUT_FORMAT_YUV_SAMPLING_EVENU_ODDV (2 << 0)
#define MT9M114_CAM_OUTPUT_Y_OFFSET CCI_REG8(0xc870)
#define MT9M114_CAM_AET_AEMODE CCI_REG8(0xc878)
#define MT9M114_CAM_AET_EXEC_SET_INDOOR BIT(0)
#define MT9M114_CAM_AET_DISCRETE_FRAMERATE BIT(1)
#define MT9M114_CAM_AET_ADAPTATIVE_TARGET_LUMA BIT(2)
#define MT9M114_CAM_AET_ADAPTATIVE_SKIP_FRAMES BIT(3)
#define MT9M114_CAM_AET_SKIP_FRAMES CCI_REG8(0xc879)
#define MT9M114_CAM_AET_TARGET_AVERAGE_LUMA CCI_REG8(0xc87a)
#define MT9M114_CAM_AET_TARGET_AVERAGE_LUMA_DARK CCI_REG8(0xc87b)
#define MT9M114_CAM_AET_BLACK_CLIPPING_TARGET CCI_REG16(0xc87c)
#define MT9M114_CAM_AET_AE_MIN_VIRT_INT_TIME_PCLK CCI_REG16(0xc87e)
#define MT9M114_CAM_AET_AE_MIN_VIRT_DGAIN CCI_REG16(0xc880)
#define MT9M114_CAM_AET_AE_MAX_VIRT_DGAIN CCI_REG16(0xc882)
#define MT9M114_CAM_AET_AE_MIN_VIRT_AGAIN CCI_REG16(0xc884)
#define MT9M114_CAM_AET_AE_MAX_VIRT_AGAIN CCI_REG16(0xc886)
#define MT9M114_CAM_AET_AE_VIRT_GAIN_TH_EG CCI_REG16(0xc888)
#define MT9M114_CAM_AET_AE_EG_GATE_PERCENTAGE CCI_REG8(0xc88a)
#define MT9M114_CAM_AET_FLICKER_FREQ_HZ CCI_REG8(0xc88b)
#define MT9M114_CAM_AET_MAX_FRAME_RATE CCI_REG16(0xc88c)
#define MT9M114_CAM_AET_MIN_FRAME_RATE CCI_REG16(0xc88e)
#define MT9M114_CAM_AET_TARGET_GAIN CCI_REG16(0xc890)
#define MT9M114_CAM_AWB_CCM_L(n) CCI_REG16(0xc892 + (n) * 2)
#define MT9M114_CAM_AWB_CCM_M(n) CCI_REG16(0xc8a4 + (n) * 2)
#define MT9M114_CAM_AWB_CCM_R(n) CCI_REG16(0xc8b6 + (n) * 2)
#define MT9M114_CAM_AWB_CCM_L_RG_GAIN CCI_REG16(0xc8c8)
#define MT9M114_CAM_AWB_CCM_L_BG_GAIN CCI_REG16(0xc8ca)
#define MT9M114_CAM_AWB_CCM_M_RG_GAIN CCI_REG16(0xc8cc)
#define MT9M114_CAM_AWB_CCM_M_BG_GAIN CCI_REG16(0xc8ce)
#define MT9M114_CAM_AWB_CCM_R_RG_GAIN CCI_REG16(0xc8d0)
#define MT9M114_CAM_AWB_CCM_R_BG_GAIN CCI_REG16(0xc8d2)
#define MT9M114_CAM_AWB_CCM_L_CTEMP CCI_REG16(0xc8d4)
#define MT9M114_CAM_AWB_CCM_M_CTEMP CCI_REG16(0xc8d6)
#define MT9M114_CAM_AWB_CCM_R_CTEMP CCI_REG16(0xc8d8)
#define MT9M114_CAM_AWB_AWB_XSCALE CCI_REG8(0xc8f2)
#define MT9M114_CAM_AWB_AWB_YSCALE CCI_REG8(0xc8f3)
#define MT9M114_CAM_AWB_AWB_WEIGHTS(n) CCI_REG16(0xc8f4 + (n) * 2)
#define MT9M114_CAM_AWB_AWB_XSHIFT_PRE_ADJ CCI_REG16(0xc904)
#define MT9M114_CAM_AWB_AWB_YSHIFT_PRE_ADJ CCI_REG16(0xc906)
#define MT9M114_CAM_AWB_AWBMODE CCI_REG8(0xc909)
#define MT9M114_CAM_AWB_MODE_AUTO BIT(1)
#define MT9M114_CAM_AWB_MODE_EXCLUSIVE_AE BIT(0)
#define MT9M114_CAM_AWB_K_R_L CCI_REG8(0xc90c)
#define MT9M114_CAM_AWB_K_G_L CCI_REG8(0xc90d)
#define MT9M114_CAM_AWB_K_B_L CCI_REG8(0xc90e)
#define MT9M114_CAM_AWB_K_R_R CCI_REG8(0xc90f)
#define MT9M114_CAM_AWB_K_G_R CCI_REG8(0xc910)
#define MT9M114_CAM_AWB_K_B_R CCI_REG8(0xc911)
#define MT9M114_CAM_STAT_AWB_CLIP_WINDOW_XSTART CCI_REG16(0xc914)
#define MT9M114_CAM_STAT_AWB_CLIP_WINDOW_YSTART CCI_REG16(0xc916)
#define MT9M114_CAM_STAT_AWB_CLIP_WINDOW_XEND CCI_REG16(0xc918)
#define MT9M114_CAM_STAT_AWB_CLIP_WINDOW_YEND CCI_REG16(0xc91a)
#define MT9M114_CAM_STAT_AE_INITIAL_WINDOW_XSTART CCI_REG16(0xc91c)
#define MT9M114_CAM_STAT_AE_INITIAL_WINDOW_YSTART CCI_REG16(0xc91e)
#define MT9M114_CAM_STAT_AE_INITIAL_WINDOW_XEND CCI_REG16(0xc920)
#define MT9M114_CAM_STAT_AE_INITIAL_WINDOW_YEND CCI_REG16(0xc922)
#define MT9M114_CAM_LL_LLMODE CCI_REG16(0xc924)
#define MT9M114_CAM_LL_START_BRIGHTNESS CCI_REG16(0xc926)
#define MT9M114_CAM_LL_STOP_BRIGHTNESS CCI_REG16(0xc928)
#define MT9M114_CAM_LL_START_SATURATION CCI_REG8(0xc92a)
#define MT9M114_CAM_LL_END_SATURATION CCI_REG8(0xc92b)
#define MT9M114_CAM_LL_START_DESATURATION CCI_REG8(0xc92c)
#define MT9M114_CAM_LL_END_DESATURATION CCI_REG8(0xc92d)
#define MT9M114_CAM_LL_START_DEMOSAICING CCI_REG8(0xc92e)
#define MT9M114_CAM_LL_START_AP_GAIN CCI_REG8(0xc92f)
#define MT9M114_CAM_LL_START_AP_THRESH CCI_REG8(0xc930)
#define MT9M114_CAM_LL_STOP_DEMOSAICING CCI_REG8(0xc931)
#define MT9M114_CAM_LL_STOP_AP_GAIN CCI_REG8(0xc932)
#define MT9M114_CAM_LL_STOP_AP_THRESH CCI_REG8(0xc933)
#define MT9M114_CAM_LL_START_NR_RED CCI_REG8(0xc934)
#define MT9M114_CAM_LL_START_NR_GREEN CCI_REG8(0xc935)
#define MT9M114_CAM_LL_START_NR_BLUE CCI_REG8(0xc936)
#define MT9M114_CAM_LL_START_NR_THRESH CCI_REG8(0xc937)
#define MT9M114_CAM_LL_STOP_NR_RED CCI_REG8(0xc938)
#define MT9M114_CAM_LL_STOP_NR_GREEN CCI_REG8(0xc939)
#define MT9M114_CAM_LL_STOP_NR_BLUE CCI_REG8(0xc93a)
#define MT9M114_CAM_LL_STOP_NR_THRESH CCI_REG8(0xc93b)
#define MT9M114_CAM_LL_START_CONTRAST_BM CCI_REG16(0xc93c)
#define MT9M114_CAM_LL_STOP_CONTRAST_BM CCI_REG16(0xc93e)
#define MT9M114_CAM_LL_GAMMA CCI_REG16(0xc940)
#define MT9M114_CAM_LL_START_CONTRAST_GRADIENT CCI_REG8(0xc942)
#define MT9M114_CAM_LL_STOP_CONTRAST_GRADIENT CCI_REG8(0xc943)
#define MT9M114_CAM_LL_START_CONTRAST_LUMA_PERCENTAGE CCI_REG8(0xc944)
#define MT9M114_CAM_LL_STOP_CONTRAST_LUMA_PERCENTAGE CCI_REG8(0xc945)
#define MT9M114_CAM_LL_START_GAIN_METRIC CCI_REG16(0xc946)
#define MT9M114_CAM_LL_STOP_GAIN_METRIC CCI_REG16(0xc948)
#define MT9M114_CAM_LL_START_FADE_TO_BLACK_LUMA CCI_REG16(0xc94a)
#define MT9M114_CAM_LL_STOP_FADE_TO_BLACK_LUMA CCI_REG16(0xc94c)
#define MT9M114_CAM_LL_CLUSTER_DC_TH_BM CCI_REG16(0xc94e)
#define MT9M114_CAM_LL_CLUSTER_DC_GATE_PERCENTAGE CCI_REG8(0xc950)
#define MT9M114_CAM_LL_SUMMING_SENSITIVITY_FACTOR CCI_REG8(0xc951)
#define MT9M114_CAM_LL_START_TARGET_LUMA_BM CCI_REG16(0xc952)
#define MT9M114_CAM_LL_STOP_TARGET_LUMA_BM CCI_REG16(0xc954)
#define MT9M114_CAM_PGA_PGA_CONTROL CCI_REG16(0xc95e)
#define MT9M114_CAM_SYSCTL_PLL_ENABLE CCI_REG8(0xc97e)
#define MT9M114_CAM_SYSCTL_PLL_ENABLE_VALUE BIT(0)
#define MT9M114_CAM_SYSCTL_PLL_DISABLE_VALUE 0x00
#define MT9M114_CAM_SYSCTL_PLL_DIVIDER_M_N CCI_REG16(0xc980)
#define MT9M114_CAM_SYSCTL_PLL_DIVIDER_VALUE(m, n) (((n) << 8) | (m))
#define MT9M114_CAM_SYSCTL_PLL_DIVIDER_P CCI_REG16(0xc982)
#define MT9M114_CAM_SYSCTL_PLL_DIVIDER_P_VALUE(p) ((p) << 8)
#define MT9M114_CAM_PORT_OUTPUT_CONTROL CCI_REG16(0xc984)
#define MT9M114_CAM_PORT_PORT_SELECT_PARALLEL (0 << 0)
#define MT9M114_CAM_PORT_PORT_SELECT_MIPI (1 << 0)
#define MT9M114_CAM_PORT_CLOCK_SLOWDOWN BIT(3)
#define MT9M114_CAM_PORT_TRUNCATE_RAW_BAYER BIT(4)
#define MT9M114_CAM_PORT_PIXCLK_GATE BIT(5)
#define MT9M114_CAM_PORT_CONT_MIPI_CLK BIT(6)
#define MT9M114_CAM_PORT_CHAN_NUM(vc) ((vc) << 8)
#define MT9M114_CAM_PORT_MIPI_TIMING_T_HS_ZERO CCI_REG16(0xc988)
#define MT9M114_CAM_PORT_MIPI_TIMING_T_HS_ZERO_VALUE(n) ((n) << 8)
#define MT9M114_CAM_PORT_MIPI_TIMING_T_HS_EXIT_TRAIL CCI_REG16(0xc98a)
#define MT9M114_CAM_PORT_MIPI_TIMING_T_HS_EXIT_VALUE(n) ((n) << 8)
#define MT9M114_CAM_PORT_MIPI_TIMING_T_HS_TRAIL_VALUE(n) ((n) << 0)
#define MT9M114_CAM_PORT_MIPI_TIMING_T_CLK_POST_PRE CCI_REG16(0xc98c)
#define MT9M114_CAM_PORT_MIPI_TIMING_T_CLK_POST_VALUE(n) ((n) << 8)
#define MT9M114_CAM_PORT_MIPI_TIMING_T_CLK_PRE_VALUE(n) ((n) << 0)
#define MT9M114_CAM_PORT_MIPI_TIMING_T_CLK_TRAIL_ZERO CCI_REG16(0xc98e)
#define MT9M114_CAM_PORT_MIPI_TIMING_T_CLK_TRAIL_VALUE(n) ((n) << 8)
#define MT9M114_CAM_PORT_MIPI_TIMING_T_CLK_ZERO_VALUE(n) ((n) << 0)
/* System Manager registers */
#define MT9M114_SYSMGR_NEXT_STATE CCI_REG8(0xdc00)
#define MT9M114_SYSMGR_CURRENT_STATE CCI_REG8(0xdc01)
#define MT9M114_SYSMGR_CMD_STATUS CCI_REG8(0xdc02)
/* Patch Loader registers */
#define MT9M114_PATCHLDR_LOADER_ADDRESS CCI_REG16(0xe000)
#define MT9M114_PATCHLDR_PATCH_ID CCI_REG16(0xe002)
#define MT9M114_PATCHLDR_FIRMWARE_ID CCI_REG32(0xe004)
#define MT9M114_PATCHLDR_APPLY_STATUS CCI_REG8(0xe008)
#define MT9M114_PATCHLDR_NUM_PATCHES CCI_REG8(0xe009)
#define MT9M114_PATCHLDR_PATCH_ID_0 CCI_REG16(0xe00a)
#define MT9M114_PATCHLDR_PATCH_ID_1 CCI_REG16(0xe00c)
#define MT9M114_PATCHLDR_PATCH_ID_2 CCI_REG16(0xe00e)
#define MT9M114_PATCHLDR_PATCH_ID_3 CCI_REG16(0xe010)
#define MT9M114_PATCHLDR_PATCH_ID_4 CCI_REG16(0xe012)
#define MT9M114_PATCHLDR_PATCH_ID_5 CCI_REG16(0xe014)
#define MT9M114_PATCHLDR_PATCH_ID_6 CCI_REG16(0xe016)
#define MT9M114_PATCHLDR_PATCH_ID_7 CCI_REG16(0xe018)
/* SYS_STATE values (for SYSMGR_NEXT_STATE and SYSMGR_CURRENT_STATE) */
#define MT9M114_SYS_STATE_ENTER_CONFIG_CHANGE 0x28
#define MT9M114_SYS_STATE_STREAMING 0x31
#define MT9M114_SYS_STATE_START_STREAMING 0x34
#define MT9M114_SYS_STATE_ENTER_SUSPEND 0x40
#define MT9M114_SYS_STATE_SUSPENDED 0x41
#define MT9M114_SYS_STATE_ENTER_STANDBY 0x50
#define MT9M114_SYS_STATE_STANDBY 0x52
#define MT9M114_SYS_STATE_LEAVE_STANDBY 0x54
/* Result status of last SET_STATE comamnd */
#define MT9M114_SET_STATE_RESULT_ENOERR 0x00
#define MT9M114_SET_STATE_RESULT_EINVAL 0x0c
#define MT9M114_SET_STATE_RESULT_ENOSPC 0x0d
/*
* The minimum amount of horizontal and vertical blanking is undocumented. The
* minimum values that have been seen in register lists are 303 and 38, use
* them.
*
* Set the default to achieve 1280x960 at 30fps.
*/
#define MT9M114_MIN_HBLANK 303
#define MT9M114_MIN_VBLANK 38
#define MT9M114_DEF_HBLANK 323
#define MT9M114_DEF_VBLANK 39
#define MT9M114_DEF_FRAME_RATE 30
#define MT9M114_MAX_FRAME_RATE 120
#define MT9M114_PIXEL_ARRAY_WIDTH 1296U
#define MT9M114_PIXEL_ARRAY_HEIGHT 976U
/*
* These values are not well documented and are semi-arbitrary. The pixel array
* minimum output size is 8 pixels larger than the minimum scaler cropped input
* width to account for the demosaicing.
*/
#define MT9M114_PIXEL_ARRAY_MIN_OUTPUT_WIDTH (32U + 8U)
#define MT9M114_PIXEL_ARRAY_MIN_OUTPUT_HEIGHT (32U + 8U)
#define MT9M114_SCALER_CROPPED_INPUT_WIDTH 32U
#define MT9M114_SCALER_CROPPED_INPUT_HEIGHT 32U
/* Indices into the mt9m114.ifp.tpg array. */
#define MT9M114_TPG_PATTERN 0
#define MT9M114_TPG_RED 1
#define MT9M114_TPG_GREEN 2
#define MT9M114_TPG_BLUE 3
/* -----------------------------------------------------------------------------
* Data Structures
*/
enum mt9m114_format_flag {
MT9M114_FMT_FLAG_PARALLEL = BIT(0),
MT9M114_FMT_FLAG_CSI2 = BIT(1),
};
struct mt9m114_format_info {
u32 code;
u32 output_format;
u32 flags;
};
struct mt9m114 {
struct i2c_client *client;
struct regmap *regmap;
struct clk *clk;
struct gpio_desc *reset;
struct regulator_bulk_data supplies[3];
struct v4l2_fwnode_endpoint bus_cfg;
bool bypass_pll;
struct {
unsigned int m;
unsigned int n;
unsigned int p;
} pll;
unsigned int pixrate;
bool streaming;
/* Pixel Array */
struct {
struct v4l2_subdev sd;
struct media_pad pad;
struct v4l2_ctrl_handler hdl;
struct v4l2_ctrl *exposure;
struct v4l2_ctrl *gain;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *vblank;
} pa;
/* Image Flow Processor */
struct {
struct v4l2_subdev sd;
struct media_pad pads[2];
struct v4l2_ctrl_handler hdl;
unsigned int frame_rate;
struct v4l2_ctrl *tpg[4];
} ifp;
};
/* -----------------------------------------------------------------------------
* Formats
*/
static const struct mt9m114_format_info mt9m114_format_infos[] = {
{
/*
* The first two entries are used as defaults, for parallel and
* CSI-2 buses respectively. Keep them in that order.
*/
.code = MEDIA_BUS_FMT_UYVY8_2X8,
.flags = MT9M114_FMT_FLAG_PARALLEL,
.output_format = MT9M114_CAM_OUTPUT_FORMAT_FORMAT_YUV,
}, {
.code = MEDIA_BUS_FMT_UYVY8_1X16,
.flags = MT9M114_FMT_FLAG_CSI2,
.output_format = MT9M114_CAM_OUTPUT_FORMAT_FORMAT_YUV,
}, {
.code = MEDIA_BUS_FMT_YUYV8_2X8,
.flags = MT9M114_FMT_FLAG_PARALLEL,
.output_format = MT9M114_CAM_OUTPUT_FORMAT_FORMAT_YUV
| MT9M114_CAM_OUTPUT_FORMAT_SWAP_BYTES,
}, {
.code = MEDIA_BUS_FMT_YUYV8_1X16,
.flags = MT9M114_FMT_FLAG_CSI2,
.output_format = MT9M114_CAM_OUTPUT_FORMAT_FORMAT_YUV
| MT9M114_CAM_OUTPUT_FORMAT_SWAP_BYTES,
}, {
.code = MEDIA_BUS_FMT_RGB565_2X8_LE,
.flags = MT9M114_FMT_FLAG_PARALLEL,
.output_format = MT9M114_CAM_OUTPUT_FORMAT_RGB_FORMAT_565RGB
| MT9M114_CAM_OUTPUT_FORMAT_FORMAT_RGB
| MT9M114_CAM_OUTPUT_FORMAT_SWAP_BYTES,
}, {
.code = MEDIA_BUS_FMT_RGB565_2X8_BE,
.flags = MT9M114_FMT_FLAG_PARALLEL,
.output_format = MT9M114_CAM_OUTPUT_FORMAT_RGB_FORMAT_565RGB
| MT9M114_CAM_OUTPUT_FORMAT_FORMAT_RGB,
}, {
.code = MEDIA_BUS_FMT_RGB565_1X16,
.flags = MT9M114_FMT_FLAG_CSI2,
.output_format = MT9M114_CAM_OUTPUT_FORMAT_RGB_FORMAT_565RGB
| MT9M114_CAM_OUTPUT_FORMAT_FORMAT_RGB,
}, {
.code = MEDIA_BUS_FMT_SGRBG8_1X8,
.output_format = MT9M114_CAM_OUTPUT_FORMAT_BAYER_FORMAT_PROCESSED8
| MT9M114_CAM_OUTPUT_FORMAT_FORMAT_BAYER,
.flags = MT9M114_FMT_FLAG_PARALLEL | MT9M114_FMT_FLAG_CSI2,
}, {
/* Keep the format compatible with the IFP sink pad last. */
.code = MEDIA_BUS_FMT_SGRBG10_1X10,
.output_format = MT9M114_CAM_OUTPUT_FORMAT_BAYER_FORMAT_RAWR10
| MT9M114_CAM_OUTPUT_FORMAT_FORMAT_BAYER,
.flags = MT9M114_FMT_FLAG_PARALLEL | MT9M114_FMT_FLAG_CSI2,
}
};
static const struct mt9m114_format_info *
mt9m114_default_format_info(struct mt9m114 *sensor)
{
if (sensor->bus_cfg.bus_type == V4L2_MBUS_CSI2_DPHY)
return &mt9m114_format_infos[1];
else
return &mt9m114_format_infos[0];
}
static const struct mt9m114_format_info *
mt9m114_format_info(struct mt9m114 *sensor, unsigned int pad, u32 code)
{
const unsigned int num_formats = ARRAY_SIZE(mt9m114_format_infos);
unsigned int flag;
unsigned int i;
switch (pad) {
case 0:
return &mt9m114_format_infos[num_formats - 1];
case 1:
if (sensor->bus_cfg.bus_type == V4L2_MBUS_CSI2_DPHY)
flag = MT9M114_FMT_FLAG_CSI2;
else
flag = MT9M114_FMT_FLAG_PARALLEL;
for (i = 0; i < num_formats; ++i) {
const struct mt9m114_format_info *info =
&mt9m114_format_infos[i];
if (info->code == code && info->flags & flag)
return info;
}
return mt9m114_default_format_info(sensor);
default:
return NULL;
}
}
/* -----------------------------------------------------------------------------
* Initialization
*/
static const struct cci_reg_sequence mt9m114_init[] = {
{ MT9M114_RESET_REGISTER, MT9M114_RESET_REGISTER_MASK_BAD |
MT9M114_RESET_REGISTER_LOCK_REG |
0x0010 },
/* Sensor optimization */
{ CCI_REG16(0x316a), 0x8270 },
{ CCI_REG16(0x316c), 0x8270 },
{ CCI_REG16(0x3ed0), 0x2305 },
{ CCI_REG16(0x3ed2), 0x77cf },
{ CCI_REG16(0x316e), 0x8202 },
{ CCI_REG16(0x3180), 0x87ff },
{ CCI_REG16(0x30d4), 0x6080 },
{ CCI_REG16(0xa802), 0x0008 },
{ CCI_REG16(0x3e14), 0xff39 },
/* APGA */
{ MT9M114_CAM_PGA_PGA_CONTROL, 0x0000 },
/* Automatic White balance */
{ MT9M114_CAM_AWB_CCM_L(0), 0x0267 },
{ MT9M114_CAM_AWB_CCM_L(1), 0xff1a },
{ MT9M114_CAM_AWB_CCM_L(2), 0xffb3 },
{ MT9M114_CAM_AWB_CCM_L(3), 0xff80 },
{ MT9M114_CAM_AWB_CCM_L(4), 0x0166 },
{ MT9M114_CAM_AWB_CCM_L(5), 0x0003 },
{ MT9M114_CAM_AWB_CCM_L(6), 0xff9a },
{ MT9M114_CAM_AWB_CCM_L(7), 0xfeb4 },
{ MT9M114_CAM_AWB_CCM_L(8), 0x024d },
{ MT9M114_CAM_AWB_CCM_M(0), 0x01bf },
{ MT9M114_CAM_AWB_CCM_M(1), 0xff01 },
{ MT9M114_CAM_AWB_CCM_M(2), 0xfff3 },
{ MT9M114_CAM_AWB_CCM_M(3), 0xff75 },
{ MT9M114_CAM_AWB_CCM_M(4), 0x0198 },
{ MT9M114_CAM_AWB_CCM_M(5), 0xfffd },
{ MT9M114_CAM_AWB_CCM_M(6), 0xff9a },
{ MT9M114_CAM_AWB_CCM_M(7), 0xfee7 },
{ MT9M114_CAM_AWB_CCM_M(8), 0x02a8 },
{ MT9M114_CAM_AWB_CCM_R(0), 0x01d9 },
{ MT9M114_CAM_AWB_CCM_R(1), 0xff26 },
{ MT9M114_CAM_AWB_CCM_R(2), 0xfff3 },
{ MT9M114_CAM_AWB_CCM_R(3), 0xffb3 },
{ MT9M114_CAM_AWB_CCM_R(4), 0x0132 },
{ MT9M114_CAM_AWB_CCM_R(5), 0xffe8 },
{ MT9M114_CAM_AWB_CCM_R(6), 0xffda },
{ MT9M114_CAM_AWB_CCM_R(7), 0xfecd },
{ MT9M114_CAM_AWB_CCM_R(8), 0x02c2 },
{ MT9M114_CAM_AWB_CCM_L_RG_GAIN, 0x0075 },
{ MT9M114_CAM_AWB_CCM_L_BG_GAIN, 0x011c },
{ MT9M114_CAM_AWB_CCM_M_RG_GAIN, 0x009a },
{ MT9M114_CAM_AWB_CCM_M_BG_GAIN, 0x0105 },
{ MT9M114_CAM_AWB_CCM_R_RG_GAIN, 0x00a4 },
{ MT9M114_CAM_AWB_CCM_R_BG_GAIN, 0x00ac },
{ MT9M114_CAM_AWB_CCM_L_CTEMP, 0x0a8c },
{ MT9M114_CAM_AWB_CCM_M_CTEMP, 0x0f0a },
{ MT9M114_CAM_AWB_CCM_R_CTEMP, 0x1964 },
{ MT9M114_CAM_AWB_AWB_XSHIFT_PRE_ADJ, 51 },
{ MT9M114_CAM_AWB_AWB_YSHIFT_PRE_ADJ, 60 },
{ MT9M114_CAM_AWB_AWB_XSCALE, 3 },
{ MT9M114_CAM_AWB_AWB_YSCALE, 2 },
{ MT9M114_CAM_AWB_AWB_WEIGHTS(0), 0x0000 },
{ MT9M114_CAM_AWB_AWB_WEIGHTS(1), 0x0000 },
{ MT9M114_CAM_AWB_AWB_WEIGHTS(2), 0x0000 },
{ MT9M114_CAM_AWB_AWB_WEIGHTS(3), 0xe724 },
{ MT9M114_CAM_AWB_AWB_WEIGHTS(4), 0x1583 },
{ MT9M114_CAM_AWB_AWB_WEIGHTS(5), 0x2045 },
{ MT9M114_CAM_AWB_AWB_WEIGHTS(6), 0x03ff },
{ MT9M114_CAM_AWB_AWB_WEIGHTS(7), 0x007c },
{ MT9M114_CAM_AWB_K_R_L, 0x80 },
{ MT9M114_CAM_AWB_K_G_L, 0x80 },
{ MT9M114_CAM_AWB_K_B_L, 0x80 },
{ MT9M114_CAM_AWB_K_R_R, 0x88 },
{ MT9M114_CAM_AWB_K_G_R, 0x80 },
{ MT9M114_CAM_AWB_K_B_R, 0x80 },
/* Low-Light Image Enhancements */
{ MT9M114_CAM_LL_START_BRIGHTNESS, 0x0020 },
{ MT9M114_CAM_LL_STOP_BRIGHTNESS, 0x009a },
{ MT9M114_CAM_LL_START_GAIN_METRIC, 0x0070 },
{ MT9M114_CAM_LL_STOP_GAIN_METRIC, 0x00f3 },
{ MT9M114_CAM_LL_START_CONTRAST_LUMA_PERCENTAGE, 0x20 },
{ MT9M114_CAM_LL_STOP_CONTRAST_LUMA_PERCENTAGE, 0x9a },
{ MT9M114_CAM_LL_START_SATURATION, 0x80 },
{ MT9M114_CAM_LL_END_SATURATION, 0x4b },
{ MT9M114_CAM_LL_START_DESATURATION, 0x00 },
{ MT9M114_CAM_LL_END_DESATURATION, 0xff },
{ MT9M114_CAM_LL_START_DEMOSAICING, 0x3c },
{ MT9M114_CAM_LL_START_AP_GAIN, 0x02 },
{ MT9M114_CAM_LL_START_AP_THRESH, 0x06 },
{ MT9M114_CAM_LL_STOP_DEMOSAICING, 0x64 },
{ MT9M114_CAM_LL_STOP_AP_GAIN, 0x01 },
{ MT9M114_CAM_LL_STOP_AP_THRESH, 0x0c },
{ MT9M114_CAM_LL_START_NR_RED, 0x3c },
{ MT9M114_CAM_LL_START_NR_GREEN, 0x3c },
{ MT9M114_CAM_LL_START_NR_BLUE, 0x3c },
{ MT9M114_CAM_LL_START_NR_THRESH, 0x0f },
{ MT9M114_CAM_LL_STOP_NR_RED, 0x64 },
{ MT9M114_CAM_LL_STOP_NR_GREEN, 0x64 },
{ MT9M114_CAM_LL_STOP_NR_BLUE, 0x64 },
{ MT9M114_CAM_LL_STOP_NR_THRESH, 0x32 },
{ MT9M114_CAM_LL_START_CONTRAST_BM, 0x0020 },
{ MT9M114_CAM_LL_STOP_CONTRAST_BM, 0x009a },
{ MT9M114_CAM_LL_GAMMA, 0x00dc },
{ MT9M114_CAM_LL_START_CONTRAST_GRADIENT, 0x38 },
{ MT9M114_CAM_LL_STOP_CONTRAST_GRADIENT, 0x30 },
{ MT9M114_CAM_LL_START_CONTRAST_LUMA_PERCENTAGE, 0x50 },
{ MT9M114_CAM_LL_STOP_CONTRAST_LUMA_PERCENTAGE, 0x19 },
{ MT9M114_CAM_LL_START_FADE_TO_BLACK_LUMA, 0x0230 },
{ MT9M114_CAM_LL_STOP_FADE_TO_BLACK_LUMA, 0x0010 },
{ MT9M114_CAM_LL_CLUSTER_DC_TH_BM, 0x01cd },
{ MT9M114_CAM_LL_CLUSTER_DC_GATE_PERCENTAGE, 0x05 },
{ MT9M114_CAM_LL_SUMMING_SENSITIVITY_FACTOR, 0x40 },
/* Auto-Exposure */
{ MT9M114_CAM_AET_TARGET_AVERAGE_LUMA_DARK, 0x1b },
{ MT9M114_CAM_AET_AEMODE, 0x00 },
{ MT9M114_CAM_AET_TARGET_GAIN, 0x0080 },
{ MT9M114_CAM_AET_AE_MAX_VIRT_AGAIN, 0x0100 },
{ MT9M114_CAM_AET_BLACK_CLIPPING_TARGET, 0x005a },
{ MT9M114_CCM_DELTA_GAIN, 0x05 },
{ MT9M114_AE_TRACK_AE_TRACKING_DAMPENING_SPEED, 0x20 },
/* Pixel array timings and integration time */
{ MT9M114_CAM_SENSOR_CFG_ROW_SPEED, 1 },
{ MT9M114_CAM_SENSOR_CFG_FINE_INTEG_TIME_MIN, 219 },
{ MT9M114_CAM_SENSOR_CFG_FINE_INTEG_TIME_MAX, 1459 },
{ MT9M114_CAM_SENSOR_CFG_FINE_CORRECTION, 96 },
{ MT9M114_CAM_SENSOR_CFG_REG_0_DATA, 32 },
/* Miscellaneous settings */
{ MT9M114_PAD_SLEW, 0x0777 },
};
/* -----------------------------------------------------------------------------
* Hardware Configuration
*/
/* Wait for a command to complete. */
static int mt9m114_poll_command(struct mt9m114 *sensor, u32 command)
{
unsigned int i;
u64 value;
int ret;
for (i = 0; i < 100; ++i) {
ret = cci_read(sensor->regmap, MT9M114_COMMAND_REGISTER, &value,
NULL);
if (ret < 0)
return ret;
if (!(value & command))
break;
usleep_range(5000, 6000);
}
if (value & command) {
dev_err(&sensor->client->dev, "Command %u completion timeout\n",
command);
return -ETIMEDOUT;
}
if (!(value & MT9M114_COMMAND_REGISTER_OK)) {
dev_err(&sensor->client->dev, "Command %u failed\n", command);
return -EIO;
}
return 0;
}
/* Wait for a state to be entered. */
static int mt9m114_poll_state(struct mt9m114 *sensor, u32 state)
{
unsigned int i;
u64 value;
int ret;
for (i = 0; i < 100; ++i) {
ret = cci_read(sensor->regmap, MT9M114_SYSMGR_CURRENT_STATE,
&value, NULL);
if (ret < 0)
return ret;
if (value == state)
return 0;
usleep_range(1000, 1500);
}
dev_err(&sensor->client->dev, "Timeout waiting for state 0x%02x\n",
state);
return -ETIMEDOUT;
}
static int mt9m114_set_state(struct mt9m114 *sensor, u8 next_state)
{
int ret = 0;
/* Set the next desired state and start the state transition. */
cci_write(sensor->regmap, MT9M114_SYSMGR_NEXT_STATE, next_state, &ret);
cci_write(sensor->regmap, MT9M114_COMMAND_REGISTER,
MT9M114_COMMAND_REGISTER_OK |
MT9M114_COMMAND_REGISTER_SET_STATE, &ret);
if (ret < 0)
return ret;
/* Wait for the state transition to complete. */
ret = mt9m114_poll_command(sensor, MT9M114_COMMAND_REGISTER_SET_STATE);
if (ret < 0)
return ret;
return 0;
}
static int mt9m114_initialize(struct mt9m114 *sensor)
{
u32 value;
int ret;
ret = cci_multi_reg_write(sensor->regmap, mt9m114_init,
ARRAY_SIZE(mt9m114_init), NULL);
if (ret < 0) {
dev_err(&sensor->client->dev,
"Failed to initialize the sensor\n");
return ret;
}
/* Configure the PLL. */
if (sensor->bypass_pll) {
cci_write(sensor->regmap, MT9M114_CAM_SYSCTL_PLL_ENABLE,
MT9M114_CAM_SYSCTL_PLL_DISABLE_VALUE, &ret);
} else {
cci_write(sensor->regmap, MT9M114_CAM_SYSCTL_PLL_ENABLE,
MT9M114_CAM_SYSCTL_PLL_ENABLE_VALUE, &ret);
cci_write(sensor->regmap, MT9M114_CAM_SYSCTL_PLL_DIVIDER_M_N,
MT9M114_CAM_SYSCTL_PLL_DIVIDER_VALUE(sensor->pll.m,
sensor->pll.n),
&ret);
cci_write(sensor->regmap, MT9M114_CAM_SYSCTL_PLL_DIVIDER_P,
MT9M114_CAM_SYSCTL_PLL_DIVIDER_P_VALUE(sensor->pll.p),
&ret);
}
cci_write(sensor->regmap, MT9M114_CAM_SENSOR_CFG_PIXCLK,
sensor->pixrate, &ret);
/* Configure the output mode. */
if (sensor->bus_cfg.bus_type == V4L2_MBUS_CSI2_DPHY) {
value = MT9M114_CAM_PORT_PORT_SELECT_MIPI
| MT9M114_CAM_PORT_CHAN_NUM(0)
| 0x8000;
if (!(sensor->bus_cfg.bus.mipi_csi2.flags &
V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK))
value |= MT9M114_CAM_PORT_CONT_MIPI_CLK;
} else {
value = MT9M114_CAM_PORT_PORT_SELECT_PARALLEL
| 0x8000;
}
cci_write(sensor->regmap, MT9M114_CAM_PORT_OUTPUT_CONTROL, value, &ret);
if (ret < 0)
return ret;
ret = mt9m114_set_state(sensor, MT9M114_SYS_STATE_ENTER_CONFIG_CHANGE);
if (ret < 0)
return ret;
ret = mt9m114_set_state(sensor, MT9M114_SYS_STATE_ENTER_SUSPEND);
if (ret < 0)
return ret;
return 0;
}
static int mt9m114_configure_pa(struct mt9m114 *sensor,
struct v4l2_subdev_state *state)
{
const struct v4l2_mbus_framefmt *format;
const struct v4l2_rect *crop;
unsigned int hratio, vratio;
u64 read_mode;
int ret;
format = v4l2_subdev_state_get_format(state, 0);
crop = v4l2_subdev_state_get_crop(state, 0);
ret = cci_read(sensor->regmap, MT9M114_CAM_SENSOR_CONTROL_READ_MODE,
&read_mode, NULL);
if (ret < 0)
return ret;
hratio = crop->width / format->width;
vratio = crop->height / format->height;
/*
* Pixel array crop and binning. The CAM_SENSOR_CFG_CPIPE_LAST_ROW
* register isn't clearly documented, but is always set to the number
* of active rows minus 4 divided by the vertical binning factor in all
* example sensor modes.
*/
cci_write(sensor->regmap, MT9M114_CAM_SENSOR_CFG_X_ADDR_START,
crop->left, &ret);
cci_write(sensor->regmap, MT9M114_CAM_SENSOR_CFG_Y_ADDR_START,
crop->top, &ret);
cci_write(sensor->regmap, MT9M114_CAM_SENSOR_CFG_X_ADDR_END,
crop->width + crop->left - 1, &ret);
cci_write(sensor->regmap, MT9M114_CAM_SENSOR_CFG_Y_ADDR_END,
crop->height + crop->top - 1, &ret);
cci_write(sensor->regmap, MT9M114_CAM_SENSOR_CFG_CPIPE_LAST_ROW,
(crop->height - 4) / vratio - 1, &ret);
read_mode &= ~(MT9M114_CAM_SENSOR_CONTROL_X_READ_OUT_MASK |
MT9M114_CAM_SENSOR_CONTROL_Y_READ_OUT_MASK);
if (hratio > 1)
read_mode |= MT9M114_CAM_SENSOR_CONTROL_X_READ_OUT_SUMMING;
if (vratio > 1)
read_mode |= MT9M114_CAM_SENSOR_CONTROL_Y_READ_OUT_SUMMING;
cci_write(sensor->regmap, MT9M114_CAM_SENSOR_CONTROL_READ_MODE,
read_mode, &ret);
return ret;
}
static int mt9m114_configure_ifp(struct mt9m114 *sensor,
struct v4l2_subdev_state *state)
{
const struct mt9m114_format_info *info;
const struct v4l2_mbus_framefmt *format;
const struct v4l2_rect *crop;
const struct v4l2_rect *compose;
u64 output_format;
int ret = 0;
format = v4l2_subdev_state_get_format(state, 1);
info = mt9m114_format_info(sensor, 1, format->code);
crop = v4l2_subdev_state_get_crop(state, 0);
compose = v4l2_subdev_state_get_compose(state, 0);
ret = cci_read(sensor->regmap, MT9M114_CAM_OUTPUT_FORMAT,
&output_format, NULL);
if (ret < 0)
return ret;
/*
* Color pipeline (IFP) cropping and scaling. Subtract 4 from the left
* and top coordinates to compensate for the lines and columns removed
* by demosaicing that are taken into account in the crop rectangle but
* not in the hardware.
*/
cci_write(sensor->regmap, MT9M114_CAM_CROP_WINDOW_XOFFSET,
crop->left - 4, &ret);
cci_write(sensor->regmap, MT9M114_CAM_CROP_WINDOW_YOFFSET,
crop->top - 4, &ret);
cci_write(sensor->regmap, MT9M114_CAM_CROP_WINDOW_WIDTH,
crop->width, &ret);
cci_write(sensor->regmap, MT9M114_CAM_CROP_WINDOW_HEIGHT,
crop->height, &ret);
cci_write(sensor->regmap, MT9M114_CAM_OUTPUT_WIDTH,
compose->width, &ret);
cci_write(sensor->regmap, MT9M114_CAM_OUTPUT_HEIGHT,
compose->height, &ret);
/* AWB and AE windows, use the full frame. */
cci_write(sensor->regmap, MT9M114_CAM_STAT_AWB_CLIP_WINDOW_XSTART,
0, &ret);
cci_write(sensor->regmap, MT9M114_CAM_STAT_AWB_CLIP_WINDOW_YSTART,
0, &ret);
cci_write(sensor->regmap, MT9M114_CAM_STAT_AWB_CLIP_WINDOW_XEND,
compose->width - 1, &ret);
cci_write(sensor->regmap, MT9M114_CAM_STAT_AWB_CLIP_WINDOW_YEND,
compose->height - 1, &ret);
cci_write(sensor->regmap, MT9M114_CAM_STAT_AE_INITIAL_WINDOW_XSTART,
0, &ret);
cci_write(sensor->regmap, MT9M114_CAM_STAT_AE_INITIAL_WINDOW_YSTART,
0, &ret);
cci_write(sensor->regmap, MT9M114_CAM_STAT_AE_INITIAL_WINDOW_XEND,
compose->width / 5 - 1, &ret);
cci_write(sensor->regmap, MT9M114_CAM_STAT_AE_INITIAL_WINDOW_YEND,
compose->height / 5 - 1, &ret);
cci_write(sensor->regmap, MT9M114_CAM_CROP_CROPMODE,
MT9M114_CAM_CROP_MODE_AWB_AUTO_CROP_EN |
MT9M114_CAM_CROP_MODE_AE_AUTO_CROP_EN, &ret);
/* Set the media bus code. */
output_format &= ~(MT9M114_CAM_OUTPUT_FORMAT_RGB_FORMAT_MASK |
MT9M114_CAM_OUTPUT_FORMAT_BAYER_FORMAT_MASK |
MT9M114_CAM_OUTPUT_FORMAT_FORMAT_MASK |
MT9M114_CAM_OUTPUT_FORMAT_SWAP_BYTES |
MT9M114_CAM_OUTPUT_FORMAT_SWAP_RED_BLUE);
output_format |= info->output_format;
cci_write(sensor->regmap, MT9M114_CAM_OUTPUT_FORMAT,
output_format, &ret);
return ret;
}
static int mt9m114_set_frame_rate(struct mt9m114 *sensor)
{
u16 frame_rate = sensor->ifp.frame_rate << 8;
int ret = 0;
cci_write(sensor->regmap, MT9M114_CAM_AET_MIN_FRAME_RATE,
frame_rate, &ret);
cci_write(sensor->regmap, MT9M114_CAM_AET_MAX_FRAME_RATE,
frame_rate, &ret);
return ret;
}
static int mt9m114_start_streaming(struct mt9m114 *sensor,
struct v4l2_subdev_state *pa_state,
struct v4l2_subdev_state *ifp_state)
{
int ret;
ret = pm_runtime_resume_and_get(&sensor->client->dev);
if (ret)
return ret;
ret = mt9m114_configure_ifp(sensor, ifp_state);
if (ret)
goto error;
ret = mt9m114_configure_pa(sensor, pa_state);
if (ret)
goto error;
ret = mt9m114_set_frame_rate(sensor);
if (ret)
goto error;
ret = __v4l2_ctrl_handler_setup(&sensor->pa.hdl);
if (ret)
goto error;
ret = __v4l2_ctrl_handler_setup(&sensor->ifp.hdl);
if (ret)
goto error;
/*
* The Change-Config state is transient and moves to the streaming
* state automatically.
*/
ret = mt9m114_set_state(sensor, MT9M114_SYS_STATE_ENTER_CONFIG_CHANGE);
if (ret)
goto error;
sensor->streaming = true;
return 0;
error:
pm_runtime_put_autosuspend(&sensor->client->dev);
return ret;
}
static int mt9m114_stop_streaming(struct mt9m114 *sensor)
{
int ret;
sensor->streaming = false;
ret = mt9m114_set_state(sensor, MT9M114_SYS_STATE_ENTER_SUSPEND);
pm_runtime_put_autosuspend(&sensor->client->dev);
return ret;
}
/* -----------------------------------------------------------------------------
* Common Subdev Operations
*/
static const struct media_entity_operations mt9m114_entity_ops = {
.link_validate = v4l2_subdev_link_validate,
};
/* -----------------------------------------------------------------------------
* Pixel Array Control Operations
*/
static inline struct mt9m114 *pa_ctrl_to_mt9m114(struct v4l2_ctrl *ctrl)
{
return container_of(ctrl->handler, struct mt9m114, pa.hdl);
}
static int mt9m114_pa_g_ctrl(struct v4l2_ctrl *ctrl)
{
struct mt9m114 *sensor = pa_ctrl_to_mt9m114(ctrl);
u64 value;
int ret;
if (!pm_runtime_get_if_in_use(&sensor->client->dev))
return 0;
switch (ctrl->id) {
case V4L2_CID_EXPOSURE:
ret = cci_read(sensor->regmap,
MT9M114_CAM_SENSOR_CONTROL_COARSE_INTEGRATION_TIME,
&value, NULL);
if (ret)
break;
ctrl->val = value;
break;
case V4L2_CID_ANALOGUE_GAIN:
ret = cci_read(sensor->regmap,
MT9M114_CAM_SENSOR_CONTROL_ANALOG_GAIN,
&value, NULL);
if (ret)
break;
ctrl->val = value;
break;
default:
ret = -EINVAL;
break;
}
pm_runtime_put_autosuspend(&sensor->client->dev);
return ret;
}
static int mt9m114_pa_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct mt9m114 *sensor = pa_ctrl_to_mt9m114(ctrl);
const struct v4l2_mbus_framefmt *format;
struct v4l2_subdev_state *state;
int ret = 0;
u64 mask;
/* V4L2 controls values are applied only when power is up. */
if (!pm_runtime_get_if_in_use(&sensor->client->dev))
return 0;
state = v4l2_subdev_get_locked_active_state(&sensor->pa.sd);
format = v4l2_subdev_state_get_format(state, 0);
switch (ctrl->id) {
case V4L2_CID_HBLANK:
cci_write(sensor->regmap, MT9M114_CAM_SENSOR_CFG_LINE_LENGTH_PCK,
ctrl->val + format->width, &ret);
break;
case V4L2_CID_VBLANK:
cci_write(sensor->regmap, MT9M114_CAM_SENSOR_CFG_FRAME_LENGTH_LINES,
ctrl->val + format->height, &ret);
break;
case V4L2_CID_EXPOSURE:
cci_write(sensor->regmap,
MT9M114_CAM_SENSOR_CONTROL_COARSE_INTEGRATION_TIME,
ctrl->val, &ret);
break;
case V4L2_CID_ANALOGUE_GAIN:
/*
* The CAM_SENSOR_CONTROL_ANALOG_GAIN contains linear analog
* gain values that are mapped to the GLOBAL_GAIN register
* values by the sensor firmware.
*/
cci_write(sensor->regmap, MT9M114_CAM_SENSOR_CONTROL_ANALOG_GAIN,
ctrl->val, &ret);
break;
case V4L2_CID_HFLIP:
mask = MT9M114_CAM_SENSOR_CONTROL_HORZ_MIRROR_EN;
ret = cci_update_bits(sensor->regmap,
MT9M114_CAM_SENSOR_CONTROL_READ_MODE,
mask, ctrl->val ? mask : 0, NULL);
break;
case V4L2_CID_VFLIP:
mask = MT9M114_CAM_SENSOR_CONTROL_VERT_FLIP_EN;
ret = cci_update_bits(sensor->regmap,
MT9M114_CAM_SENSOR_CONTROL_READ_MODE,
mask, ctrl->val ? mask : 0, NULL);
break;
default:
ret = -EINVAL;
break;
}
pm_runtime_put_autosuspend(&sensor->client->dev);
return ret;
}
static const struct v4l2_ctrl_ops mt9m114_pa_ctrl_ops = {
.g_volatile_ctrl = mt9m114_pa_g_ctrl,
.s_ctrl = mt9m114_pa_s_ctrl,
};
static void mt9m114_pa_ctrl_update_exposure(struct mt9m114 *sensor, bool manual)
{
/*
* Update the volatile flag on the manual exposure and gain controls.
* If the controls have switched to manual, read their current value
* from the hardware to ensure that control read and write operations
* will behave correctly
*/
if (manual) {
mt9m114_pa_g_ctrl(sensor->pa.exposure);
sensor->pa.exposure->cur.val = sensor->pa.exposure->val;
sensor->pa.exposure->flags &= ~V4L2_CTRL_FLAG_VOLATILE;
mt9m114_pa_g_ctrl(sensor->pa.gain);
sensor->pa.gain->cur.val = sensor->pa.gain->val;
sensor->pa.gain->flags &= ~V4L2_CTRL_FLAG_VOLATILE;
} else {
sensor->pa.exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
sensor->pa.gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
}
}
static void mt9m114_pa_ctrl_update_blanking(struct mt9m114 *sensor,
const struct v4l2_mbus_framefmt *format)
{
unsigned int max_blank;
/* Update the blanking controls ranges based on the output size. */
max_blank = MT9M114_CAM_SENSOR_CFG_LINE_LENGTH_PCK_MAX
- format->width;
__v4l2_ctrl_modify_range(sensor->pa.hblank, MT9M114_MIN_HBLANK,
max_blank, 1, MT9M114_DEF_HBLANK);
max_blank = MT9M114_CAM_SENSOR_CFG_FRAME_LENGTH_LINES_MAX
- format->height;
__v4l2_ctrl_modify_range(sensor->pa.vblank, MT9M114_MIN_VBLANK,
max_blank, 1, MT9M114_DEF_VBLANK);
}
/* -----------------------------------------------------------------------------
* Pixel Array Subdev Operations
*/
static inline struct mt9m114 *pa_to_mt9m114(struct v4l2_subdev *sd)
{
return container_of(sd, struct mt9m114, pa.sd);
}
static int mt9m114_pa_init_state(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state)
{
struct v4l2_mbus_framefmt *format;
struct v4l2_rect *crop;
crop = v4l2_subdev_state_get_crop(state, 0);
crop->left = 0;
crop->top = 0;
crop->width = MT9M114_PIXEL_ARRAY_WIDTH;
crop->height = MT9M114_PIXEL_ARRAY_HEIGHT;
format = v4l2_subdev_state_get_format(state, 0);
format->width = MT9M114_PIXEL_ARRAY_WIDTH;
format->height = MT9M114_PIXEL_ARRAY_HEIGHT;
format->code = MEDIA_BUS_FMT_SGRBG10_1X10;
format->field = V4L2_FIELD_NONE;
format->colorspace = V4L2_COLORSPACE_RAW;
format->ycbcr_enc = V4L2_YCBCR_ENC_601;
format->quantization = V4L2_QUANTIZATION_FULL_RANGE;
format->xfer_func = V4L2_XFER_FUNC_NONE;
return 0;
}
static int mt9m114_pa_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index > 0)
return -EINVAL;
code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
return 0;
}
static int mt9m114_pa_enum_framesizes(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_frame_size_enum *fse)
{
if (fse->index > 1)
return -EINVAL;
if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
return -EINVAL;
/* Report binning capability through frame size enumeration. */
fse->min_width = MT9M114_PIXEL_ARRAY_WIDTH / (fse->index + 1);
fse->max_width = MT9M114_PIXEL_ARRAY_WIDTH / (fse->index + 1);
fse->min_height = MT9M114_PIXEL_ARRAY_HEIGHT / (fse->index + 1);
fse->max_height = MT9M114_PIXEL_ARRAY_HEIGHT / (fse->index + 1);
return 0;
}
static int mt9m114_pa_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_format *fmt)
{
struct mt9m114 *sensor = pa_to_mt9m114(sd);
struct v4l2_mbus_framefmt *format;
struct v4l2_rect *crop;
unsigned int hscale;
unsigned int vscale;
crop = v4l2_subdev_state_get_crop(state, fmt->pad);
format = v4l2_subdev_state_get_format(state, fmt->pad);
/* The sensor can bin horizontally and vertically. */
hscale = DIV_ROUND_CLOSEST(crop->width, fmt->format.width ? : 1);
vscale = DIV_ROUND_CLOSEST(crop->height, fmt->format.height ? : 1);
format->width = crop->width / clamp(hscale, 1U, 2U);
format->height = crop->height / clamp(vscale, 1U, 2U);
fmt->format = *format;
if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
mt9m114_pa_ctrl_update_blanking(sensor, format);
return 0;
}
static int mt9m114_pa_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_selection *sel)
{
switch (sel->target) {
case V4L2_SEL_TGT_CROP:
sel->r = *v4l2_subdev_state_get_crop(state, sel->pad);
return 0;
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_CROP_BOUNDS:
case V4L2_SEL_TGT_NATIVE_SIZE:
sel->r.left = 0;
sel->r.top = 0;
sel->r.width = MT9M114_PIXEL_ARRAY_WIDTH;
sel->r.height = MT9M114_PIXEL_ARRAY_HEIGHT;
return 0;
default:
return -EINVAL;
}
}
static int mt9m114_pa_set_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_selection *sel)
{
struct mt9m114 *sensor = pa_to_mt9m114(sd);
struct v4l2_mbus_framefmt *format;
struct v4l2_rect *crop;
if (sel->target != V4L2_SEL_TGT_CROP)
return -EINVAL;
crop = v4l2_subdev_state_get_crop(state, sel->pad);
format = v4l2_subdev_state_get_format(state, sel->pad);
/*
* Clamp the crop rectangle. The vertical coordinates must be even, and
* the horizontal coordinates must be a multiple of 4.
*
* FIXME: The horizontal coordinates must be a multiple of 8 when
* binning, but binning is configured after setting the selection, so
* we can't know tell here if it will be used.
*/
crop->left = ALIGN(sel->r.left, 4);
crop->top = ALIGN(sel->r.top, 2);
crop->width = clamp_t(unsigned int, ALIGN(sel->r.width, 4),
MT9M114_PIXEL_ARRAY_MIN_OUTPUT_WIDTH,
MT9M114_PIXEL_ARRAY_WIDTH - crop->left);
crop->height = clamp_t(unsigned int, ALIGN(sel->r.height, 2),
MT9M114_PIXEL_ARRAY_MIN_OUTPUT_HEIGHT,
MT9M114_PIXEL_ARRAY_HEIGHT - crop->top);
sel->r = *crop;
/* Reset the format. */
format->width = crop->width;
format->height = crop->height;
if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE)
mt9m114_pa_ctrl_update_blanking(sensor, format);
return 0;
}
static const struct v4l2_subdev_pad_ops mt9m114_pa_pad_ops = {
.enum_mbus_code = mt9m114_pa_enum_mbus_code,
.enum_frame_size = mt9m114_pa_enum_framesizes,
.get_fmt = v4l2_subdev_get_fmt,
.set_fmt = mt9m114_pa_set_fmt,
.get_selection = mt9m114_pa_get_selection,
.set_selection = mt9m114_pa_set_selection,
};
static const struct v4l2_subdev_ops mt9m114_pa_ops = {
.pad = &mt9m114_pa_pad_ops,
};
static const struct v4l2_subdev_internal_ops mt9m114_pa_internal_ops = {
.init_state = mt9m114_pa_init_state,
};
static int mt9m114_pa_init(struct mt9m114 *sensor)
{
struct v4l2_ctrl_handler *hdl = &sensor->pa.hdl;
struct v4l2_subdev *sd = &sensor->pa.sd;
struct media_pad *pads = &sensor->pa.pad;
const struct v4l2_mbus_framefmt *format;
struct v4l2_subdev_state *state;
unsigned int max_exposure;
int ret;
/* Initialize the subdev. */
v4l2_subdev_init(sd, &mt9m114_pa_ops);
sd->internal_ops = &mt9m114_pa_internal_ops;
v4l2_i2c_subdev_set_name(sd, sensor->client, NULL, " pixel array");
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
sd->owner = THIS_MODULE;
sd->dev = &sensor->client->dev;
v4l2_set_subdevdata(sd, sensor->client);
/* Initialize the media entity. */
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
sd->entity.ops = &mt9m114_entity_ops;
pads[0].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&sd->entity, 1, pads);
if (ret < 0)
return ret;
/* Initialize the control handler. */
v4l2_ctrl_handler_init(hdl, 7);
/* The range of the HBLANK and VBLANK controls will be updated below. */
sensor->pa.hblank = v4l2_ctrl_new_std(hdl, &mt9m114_pa_ctrl_ops,
V4L2_CID_HBLANK,
MT9M114_DEF_HBLANK,
MT9M114_DEF_HBLANK, 1,
MT9M114_DEF_HBLANK);
sensor->pa.vblank = v4l2_ctrl_new_std(hdl, &mt9m114_pa_ctrl_ops,
V4L2_CID_VBLANK,
MT9M114_DEF_VBLANK,
MT9M114_DEF_VBLANK, 1,
MT9M114_DEF_VBLANK);
/*
* The maximum coarse integration time is the frame length in lines
* minus two. The default is taken directly from the datasheet, but
* makes little sense as auto-exposure is enabled by default.
*/
max_exposure = MT9M114_PIXEL_ARRAY_HEIGHT + MT9M114_MIN_VBLANK - 2;
sensor->pa.exposure = v4l2_ctrl_new_std(hdl, &mt9m114_pa_ctrl_ops,
V4L2_CID_EXPOSURE, 1,
max_exposure, 1, 16);
if (sensor->pa.exposure)
sensor->pa.exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
sensor->pa.gain = v4l2_ctrl_new_std(hdl, &mt9m114_pa_ctrl_ops,
V4L2_CID_ANALOGUE_GAIN, 1,
511, 1, 32);
if (sensor->pa.gain)
sensor->pa.gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
v4l2_ctrl_new_std(hdl, &mt9m114_pa_ctrl_ops,
V4L2_CID_PIXEL_RATE,
sensor->pixrate, sensor->pixrate, 1,
sensor->pixrate);
v4l2_ctrl_new_std(hdl, &mt9m114_pa_ctrl_ops,
V4L2_CID_HFLIP,
0, 1, 1, 0);
v4l2_ctrl_new_std(hdl, &mt9m114_pa_ctrl_ops,
V4L2_CID_VFLIP,
0, 1, 1, 0);
if (hdl->error) {
ret = hdl->error;
goto error;
}
sd->state_lock = hdl->lock;
ret = v4l2_subdev_init_finalize(sd);
if (ret)
goto error;
/* Update the range of the blanking controls based on the format. */
state = v4l2_subdev_lock_and_get_active_state(sd);
format = v4l2_subdev_state_get_format(state, 0);
mt9m114_pa_ctrl_update_blanking(sensor, format);
v4l2_subdev_unlock_state(state);
sd->ctrl_handler = hdl;
return 0;
error:
v4l2_ctrl_handler_free(&sensor->pa.hdl);
media_entity_cleanup(&sensor->pa.sd.entity);
return ret;
}
static void mt9m114_pa_cleanup(struct mt9m114 *sensor)
{
v4l2_ctrl_handler_free(&sensor->pa.hdl);
media_entity_cleanup(&sensor->pa.sd.entity);
}
/* -----------------------------------------------------------------------------
* Image Flow Processor Control Operations
*/
static const char * const mt9m114_test_pattern_menu[] = {
"Disabled",
"Solid Color",
"100% Color Bars",
"Pseudo-Random",
"Fade-to-Gray Color Bars",
"Walking Ones 10-bit",
"Walking Ones 8-bit",
};
/* Keep in sync with mt9m114_test_pattern_menu */
static const unsigned int mt9m114_test_pattern_value[] = {
MT9M114_CAM_MODE_TEST_PATTERN_SELECT_SOLID,
MT9M114_CAM_MODE_TEST_PATTERN_SELECT_SOLID_BARS,
MT9M114_CAM_MODE_TEST_PATTERN_SELECT_RANDOM,
MT9M114_CAM_MODE_TEST_PATTERN_SELECT_FADING_BARS,
MT9M114_CAM_MODE_TEST_PATTERN_SELECT_WALKING_1S_10B,
MT9M114_CAM_MODE_TEST_PATTERN_SELECT_WALKING_1S_8B,
};
static inline struct mt9m114 *ifp_ctrl_to_mt9m114(struct v4l2_ctrl *ctrl)
{
return container_of(ctrl->handler, struct mt9m114, ifp.hdl);
}
static int mt9m114_ifp_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct mt9m114 *sensor = ifp_ctrl_to_mt9m114(ctrl);
u32 value;
int ret = 0;
if (ctrl->id == V4L2_CID_EXPOSURE_AUTO)
mt9m114_pa_ctrl_update_exposure(sensor,
ctrl->val != V4L2_EXPOSURE_AUTO);
/* V4L2 controls values are applied only when power is up. */
if (!pm_runtime_get_if_in_use(&sensor->client->dev))
return 0;
switch (ctrl->id) {
case V4L2_CID_AUTO_WHITE_BALANCE:
/* Control both the AWB mode and the CCM algorithm. */
if (ctrl->val)
value = MT9M114_CAM_AWB_MODE_AUTO
| MT9M114_CAM_AWB_MODE_EXCLUSIVE_AE;
else
value = 0;
cci_write(sensor->regmap, MT9M114_CAM_AWB_AWBMODE, value, &ret);
if (ctrl->val)
value = MT9M114_CCM_EXEC_CALC_CCM_MATRIX | 0x22;
else
value = 0;
cci_write(sensor->regmap, MT9M114_CCM_ALGO, value, &ret);
break;
case V4L2_CID_EXPOSURE_AUTO:
if (ctrl->val == V4L2_EXPOSURE_AUTO)
value = MT9M114_AE_TRACK_EXEC_AUTOMATIC_EXPOSURE
| 0x00fe;
else
value = 0;
cci_write(sensor->regmap, MT9M114_AE_TRACK_ALGO, value, &ret);
if (ret)
break;
break;
case V4L2_CID_TEST_PATTERN:
case V4L2_CID_TEST_PATTERN_RED:
case V4L2_CID_TEST_PATTERN_GREENR:
case V4L2_CID_TEST_PATTERN_BLUE: {
unsigned int pattern = sensor->ifp.tpg[MT9M114_TPG_PATTERN]->val;
if (pattern) {
cci_write(sensor->regmap, MT9M114_CAM_MODE_SELECT,
MT9M114_CAM_MODE_SELECT_TEST_PATTERN, &ret);
cci_write(sensor->regmap,
MT9M114_CAM_MODE_TEST_PATTERN_SELECT,
mt9m114_test_pattern_value[pattern - 1], &ret);
cci_write(sensor->regmap,
MT9M114_CAM_MODE_TEST_PATTERN_RED,
sensor->ifp.tpg[MT9M114_TPG_RED]->val, &ret);
cci_write(sensor->regmap,
MT9M114_CAM_MODE_TEST_PATTERN_GREEN,
sensor->ifp.tpg[MT9M114_TPG_GREEN]->val, &ret);
cci_write(sensor->regmap,
MT9M114_CAM_MODE_TEST_PATTERN_BLUE,
sensor->ifp.tpg[MT9M114_TPG_BLUE]->val, &ret);
} else {
cci_write(sensor->regmap, MT9M114_CAM_MODE_SELECT,
MT9M114_CAM_MODE_SELECT_NORMAL, &ret);
}
/*
* A Config-Change needs to be issued for the change to take
* effect. If we're not streaming ignore this, the change will
* be applied when the stream is started.
*/
if (ret || !sensor->streaming)
break;
ret = mt9m114_set_state(sensor,
MT9M114_SYS_STATE_ENTER_CONFIG_CHANGE);
break;
}
default:
ret = -EINVAL;
break;
}
pm_runtime_put_autosuspend(&sensor->client->dev);
return ret;
}
static const struct v4l2_ctrl_ops mt9m114_ifp_ctrl_ops = {
.s_ctrl = mt9m114_ifp_s_ctrl,
};
/* -----------------------------------------------------------------------------
* Image Flow Processor Subdev Operations
*/
static inline struct mt9m114 *ifp_to_mt9m114(struct v4l2_subdev *sd)
{
return container_of(sd, struct mt9m114, ifp.sd);
}
static int mt9m114_ifp_s_stream(struct v4l2_subdev *sd, int enable)
{
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
struct v4l2_subdev_state *pa_state;
struct v4l2_subdev_state *ifp_state;
int ret;
if (!enable)
return mt9m114_stop_streaming(sensor);
ifp_state = v4l2_subdev_lock_and_get_active_state(&sensor->ifp.sd);
pa_state = v4l2_subdev_lock_and_get_active_state(&sensor->pa.sd);
ret = mt9m114_start_streaming(sensor, pa_state, ifp_state);
v4l2_subdev_unlock_state(pa_state);
v4l2_subdev_unlock_state(ifp_state);
return ret;
}
static int mt9m114_ifp_get_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval *interval)
{
struct v4l2_fract *ival = &interval->interval;
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
/*
* FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
* subdev active state API.
*/
if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
return -EINVAL;
ival->numerator = 1;
ival->denominator = sensor->ifp.frame_rate;
return 0;
}
static int mt9m114_ifp_set_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval *interval)
{
struct v4l2_fract *ival = &interval->interval;
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
int ret = 0;
/*
* FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
* subdev active state API.
*/
if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
return -EINVAL;
if (ival->numerator != 0 && ival->denominator != 0)
sensor->ifp.frame_rate = min_t(unsigned int,
ival->denominator / ival->numerator,
MT9M114_MAX_FRAME_RATE);
else
sensor->ifp.frame_rate = MT9M114_MAX_FRAME_RATE;
ival->numerator = 1;
ival->denominator = sensor->ifp.frame_rate;
if (sensor->streaming)
ret = mt9m114_set_frame_rate(sensor);
return ret;
}
static int mt9m114_ifp_init_state(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state)
{
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
struct v4l2_mbus_framefmt *format;
struct v4l2_rect *crop;
struct v4l2_rect *compose;
format = v4l2_subdev_state_get_format(state, 0);
format->width = MT9M114_PIXEL_ARRAY_WIDTH;
format->height = MT9M114_PIXEL_ARRAY_HEIGHT;
format->code = MEDIA_BUS_FMT_SGRBG10_1X10;
format->field = V4L2_FIELD_NONE;
format->colorspace = V4L2_COLORSPACE_RAW;
format->ycbcr_enc = V4L2_YCBCR_ENC_601;
format->quantization = V4L2_QUANTIZATION_FULL_RANGE;
format->xfer_func = V4L2_XFER_FUNC_NONE;
crop = v4l2_subdev_state_get_crop(state, 0);
crop->left = 4;
crop->top = 4;
crop->width = format->width - 8;
crop->height = format->height - 8;
compose = v4l2_subdev_state_get_compose(state, 0);
compose->left = 0;
compose->top = 0;
compose->width = crop->width;
compose->height = crop->height;
format = v4l2_subdev_state_get_format(state, 1);
format->width = compose->width;
format->height = compose->height;
format->code = mt9m114_default_format_info(sensor)->code;
format->field = V4L2_FIELD_NONE;
format->colorspace = V4L2_COLORSPACE_SRGB;
format->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
format->quantization = V4L2_QUANTIZATION_DEFAULT;
format->xfer_func = V4L2_XFER_FUNC_DEFAULT;
return 0;
}
static int mt9m114_ifp_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_mbus_code_enum *code)
{
const unsigned int num_formats = ARRAY_SIZE(mt9m114_format_infos);
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
unsigned int index = 0;
unsigned int flag;
unsigned int i;
switch (code->pad) {
case 0:
if (code->index != 0)
return -EINVAL;
code->code = mt9m114_format_infos[num_formats - 1].code;
return 0;
case 1:
if (sensor->bus_cfg.bus_type == V4L2_MBUS_CSI2_DPHY)
flag = MT9M114_FMT_FLAG_CSI2;
else
flag = MT9M114_FMT_FLAG_PARALLEL;
for (i = 0; i < num_formats; ++i) {
const struct mt9m114_format_info *info =
&mt9m114_format_infos[i];
if (info->flags & flag) {
if (index == code->index) {
code->code = info->code;
return 0;
}
index++;
}
}
return -EINVAL;
default:
return -EINVAL;
}
}
static int mt9m114_ifp_enum_framesizes(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_frame_size_enum *fse)
{
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
const struct mt9m114_format_info *info;
if (fse->index > 0)
return -EINVAL;
info = mt9m114_format_info(sensor, fse->pad, fse->code);
if (!info || info->code != fse->code)
return -EINVAL;
if (fse->pad == 0) {
fse->min_width = MT9M114_PIXEL_ARRAY_MIN_OUTPUT_WIDTH;
fse->max_width = MT9M114_PIXEL_ARRAY_WIDTH;
fse->min_height = MT9M114_PIXEL_ARRAY_MIN_OUTPUT_HEIGHT;
fse->max_height = MT9M114_PIXEL_ARRAY_HEIGHT;
} else {
const struct v4l2_rect *crop;
crop = v4l2_subdev_state_get_crop(state, 0);
fse->max_width = crop->width;
fse->max_height = crop->height;
fse->min_width = fse->max_width / 4;
fse->min_height = fse->max_height / 4;
}
return 0;
}
static int mt9m114_ifp_enum_frameintervals(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_frame_interval_enum *fie)
{
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
const struct mt9m114_format_info *info;
if (fie->index > 0)
return -EINVAL;
info = mt9m114_format_info(sensor, fie->pad, fie->code);
if (!info || info->code != fie->code)
return -EINVAL;
fie->interval.numerator = 1;
fie->interval.denominator = MT9M114_MAX_FRAME_RATE;
return 0;
}
static int mt9m114_ifp_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_format *fmt)
{
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
struct v4l2_mbus_framefmt *format;
format = v4l2_subdev_state_get_format(state, fmt->pad);
if (fmt->pad == 0) {
/* Only the size can be changed on the sink pad. */
format->width = clamp(ALIGN(fmt->format.width, 8),
MT9M114_PIXEL_ARRAY_MIN_OUTPUT_WIDTH,
MT9M114_PIXEL_ARRAY_WIDTH);
format->height = clamp(ALIGN(fmt->format.height, 8),
MT9M114_PIXEL_ARRAY_MIN_OUTPUT_HEIGHT,
MT9M114_PIXEL_ARRAY_HEIGHT);
} else {
const struct mt9m114_format_info *info;
/* Only the media bus code can be changed on the source pad. */
info = mt9m114_format_info(sensor, 1, fmt->format.code);
format->code = info->code;
/* If the output format is RAW10, bypass the scaler. */
if (format->code == MEDIA_BUS_FMT_SGRBG10_1X10)
*format = *v4l2_subdev_state_get_format(state, 0);
}
fmt->format = *format;
return 0;
}
static int mt9m114_ifp_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_selection *sel)
{
const struct v4l2_mbus_framefmt *format;
const struct v4l2_rect *crop;
int ret = 0;
/* Crop and compose are only supported on the sink pad. */
if (sel->pad != 0)
return -EINVAL;
switch (sel->target) {
case V4L2_SEL_TGT_CROP:
sel->r = *v4l2_subdev_state_get_crop(state, 0);
break;
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_CROP_BOUNDS:
/*
* The crop default and bounds are equal to the sink
* format size minus 4 pixels on each side for demosaicing.
*/
format = v4l2_subdev_state_get_format(state, 0);
sel->r.left = 4;
sel->r.top = 4;
sel->r.width = format->width - 8;
sel->r.height = format->height - 8;
break;
case V4L2_SEL_TGT_COMPOSE:
sel->r = *v4l2_subdev_state_get_compose(state, 0);
break;
case V4L2_SEL_TGT_COMPOSE_DEFAULT:
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
/*
* The compose default and bounds sizes are equal to the sink
* crop rectangle size.
*/
crop = v4l2_subdev_state_get_crop(state, 0);
sel->r.left = 0;
sel->r.top = 0;
sel->r.width = crop->width;
sel->r.height = crop->height;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int mt9m114_ifp_set_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_selection *sel)
{
struct v4l2_mbus_framefmt *format;
struct v4l2_rect *crop;
struct v4l2_rect *compose;
if (sel->target != V4L2_SEL_TGT_CROP &&
sel->target != V4L2_SEL_TGT_COMPOSE)
return -EINVAL;
/* Crop and compose are only supported on the sink pad. */
if (sel->pad != 0)
return -EINVAL;
format = v4l2_subdev_state_get_format(state, 0);
crop = v4l2_subdev_state_get_crop(state, 0);
compose = v4l2_subdev_state_get_compose(state, 0);
if (sel->target == V4L2_SEL_TGT_CROP) {
/*
* Clamp the crop rectangle. Demosaicing removes 4 pixels on
* each side of the image.
*/
crop->left = clamp_t(unsigned int, ALIGN(sel->r.left, 2), 4,
format->width - 4 -
MT9M114_SCALER_CROPPED_INPUT_WIDTH);
crop->top = clamp_t(unsigned int, ALIGN(sel->r.top, 2), 4,
format->height - 4 -
MT9M114_SCALER_CROPPED_INPUT_HEIGHT);
crop->width = clamp_t(unsigned int, ALIGN(sel->r.width, 2),
MT9M114_SCALER_CROPPED_INPUT_WIDTH,
format->width - 4 - crop->left);
crop->height = clamp_t(unsigned int, ALIGN(sel->r.height, 2),
MT9M114_SCALER_CROPPED_INPUT_HEIGHT,
format->height - 4 - crop->top);
sel->r = *crop;
/* Propagate to the compose rectangle. */
compose->width = crop->width;
compose->height = crop->height;
} else {
/*
* Clamp the compose rectangle. The scaler can only downscale.
*/
compose->left = 0;
compose->top = 0;
compose->width = clamp_t(unsigned int, ALIGN(sel->r.width, 2),
MT9M114_SCALER_CROPPED_INPUT_WIDTH,
crop->width);
compose->height = clamp_t(unsigned int, ALIGN(sel->r.height, 2),
MT9M114_SCALER_CROPPED_INPUT_HEIGHT,
crop->height);
sel->r = *compose;
}
/* Propagate the compose rectangle to the source format. */
format = v4l2_subdev_state_get_format(state, 1);
format->width = compose->width;
format->height = compose->height;
return 0;
}
static void mt9m114_ifp_unregistered(struct v4l2_subdev *sd)
{
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
v4l2_device_unregister_subdev(&sensor->pa.sd);
}
static int mt9m114_ifp_registered(struct v4l2_subdev *sd)
{
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
int ret;
ret = v4l2_device_register_subdev(sd->v4l2_dev, &sensor->pa.sd);
if (ret < 0) {
dev_err(&sensor->client->dev,
"Failed to register pixel array subdev\n");
return ret;
}
ret = media_create_pad_link(&sensor->pa.sd.entity, 0,
&sensor->ifp.sd.entity, 0,
MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
if (ret < 0) {
dev_err(&sensor->client->dev,
"Failed to link pixel array to ifp\n");
v4l2_device_unregister_subdev(&sensor->pa.sd);
return ret;
}
return 0;
}
static const struct v4l2_subdev_video_ops mt9m114_ifp_video_ops = {
.s_stream = mt9m114_ifp_s_stream,
};
static const struct v4l2_subdev_pad_ops mt9m114_ifp_pad_ops = {
.enum_mbus_code = mt9m114_ifp_enum_mbus_code,
.enum_frame_size = mt9m114_ifp_enum_framesizes,
.enum_frame_interval = mt9m114_ifp_enum_frameintervals,
.get_fmt = v4l2_subdev_get_fmt,
.set_fmt = mt9m114_ifp_set_fmt,
.get_selection = mt9m114_ifp_get_selection,
.set_selection = mt9m114_ifp_set_selection,
.get_frame_interval = mt9m114_ifp_get_frame_interval,
.set_frame_interval = mt9m114_ifp_set_frame_interval,
};
static const struct v4l2_subdev_ops mt9m114_ifp_ops = {
.video = &mt9m114_ifp_video_ops,
.pad = &mt9m114_ifp_pad_ops,
};
static const struct v4l2_subdev_internal_ops mt9m114_ifp_internal_ops = {
.init_state = mt9m114_ifp_init_state,
.registered = mt9m114_ifp_registered,
.unregistered = mt9m114_ifp_unregistered,
};
static int mt9m114_ifp_init(struct mt9m114 *sensor)
{
struct v4l2_subdev *sd = &sensor->ifp.sd;
struct media_pad *pads = sensor->ifp.pads;
struct v4l2_ctrl_handler *hdl = &sensor->ifp.hdl;
struct v4l2_ctrl *link_freq;
int ret;
/* Initialize the subdev. */
v4l2_i2c_subdev_init(sd, sensor->client, &mt9m114_ifp_ops);
v4l2_i2c_subdev_set_name(sd, sensor->client, NULL, " ifp");
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
sd->internal_ops = &mt9m114_ifp_internal_ops;
/* Initialize the media entity. */
sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_ISP;
sd->entity.ops = &mt9m114_entity_ops;
pads[0].flags = MEDIA_PAD_FL_SINK;
pads[1].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&sd->entity, 2, pads);
if (ret < 0)
return ret;
sensor->ifp.frame_rate = MT9M114_DEF_FRAME_RATE;
/* Initialize the control handler. */
v4l2_ctrl_handler_init(hdl, 8);
v4l2_ctrl_new_std(hdl, &mt9m114_ifp_ctrl_ops,
V4L2_CID_AUTO_WHITE_BALANCE,
0, 1, 1, 1);
v4l2_ctrl_new_std_menu(hdl, &mt9m114_ifp_ctrl_ops,
V4L2_CID_EXPOSURE_AUTO,
V4L2_EXPOSURE_MANUAL, 0,
V4L2_EXPOSURE_AUTO);
link_freq = v4l2_ctrl_new_int_menu(hdl, &mt9m114_ifp_ctrl_ops,
V4L2_CID_LINK_FREQ,
sensor->bus_cfg.nr_of_link_frequencies - 1,
0, sensor->bus_cfg.link_frequencies);
if (link_freq)
link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
v4l2_ctrl_new_std(hdl, &mt9m114_ifp_ctrl_ops,
V4L2_CID_PIXEL_RATE,
sensor->pixrate, sensor->pixrate, 1,
sensor->pixrate);
sensor->ifp.tpg[MT9M114_TPG_PATTERN] =
v4l2_ctrl_new_std_menu_items(hdl, &mt9m114_ifp_ctrl_ops,
V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(mt9m114_test_pattern_menu) - 1,
0, 0, mt9m114_test_pattern_menu);
sensor->ifp.tpg[MT9M114_TPG_RED] =
v4l2_ctrl_new_std(hdl, &mt9m114_ifp_ctrl_ops,
V4L2_CID_TEST_PATTERN_RED,
0, 1023, 1, 1023);
sensor->ifp.tpg[MT9M114_TPG_GREEN] =
v4l2_ctrl_new_std(hdl, &mt9m114_ifp_ctrl_ops,
V4L2_CID_TEST_PATTERN_GREENR,
0, 1023, 1, 1023);
sensor->ifp.tpg[MT9M114_TPG_BLUE] =
v4l2_ctrl_new_std(hdl, &mt9m114_ifp_ctrl_ops,
V4L2_CID_TEST_PATTERN_BLUE,
0, 1023, 1, 1023);
v4l2_ctrl_cluster(ARRAY_SIZE(sensor->ifp.tpg), sensor->ifp.tpg);
if (hdl->error) {
ret = hdl->error;
goto error;
}
sd->ctrl_handler = hdl;
sd->state_lock = hdl->lock;
ret = v4l2_subdev_init_finalize(sd);
if (ret)
goto error;
return 0;
error:
v4l2_ctrl_handler_free(&sensor->ifp.hdl);
media_entity_cleanup(&sensor->ifp.sd.entity);
return ret;
}
static void mt9m114_ifp_cleanup(struct mt9m114 *sensor)
{
v4l2_ctrl_handler_free(&sensor->ifp.hdl);
media_entity_cleanup(&sensor->ifp.sd.entity);
}
/* -----------------------------------------------------------------------------
* Power Management
*/
static int mt9m114_power_on(struct mt9m114 *sensor)
{
int ret;
/* Enable power and clocks. */
ret = regulator_bulk_enable(ARRAY_SIZE(sensor->supplies),
sensor->supplies);
if (ret < 0)
return ret;
ret = clk_prepare_enable(sensor->clk);
if (ret < 0)
goto error_regulator;
/* Perform a hard reset if available, or a soft reset otherwise. */
if (sensor->reset) {
long freq = clk_get_rate(sensor->clk);
unsigned int duration;
/*
* The minimum duration is 50 clock cycles, thus typically
* around 2µs. Double it to be safe.
*/
duration = DIV_ROUND_UP(2 * 50 * 1000000, freq);
gpiod_set_value(sensor->reset, 1);
fsleep(duration);
gpiod_set_value(sensor->reset, 0);
} else {
/*
* The power may have just been turned on, we need to wait for
* the sensor to be ready to accept I2C commands.
*/
usleep_range(44500, 50000);
cci_write(sensor->regmap, MT9M114_RESET_AND_MISC_CONTROL,
MT9M114_RESET_SOC, &ret);
cci_write(sensor->regmap, MT9M114_RESET_AND_MISC_CONTROL, 0,
&ret);
if (ret < 0) {
dev_err(&sensor->client->dev, "Soft reset failed\n");
goto error_clock;
}
}
/*
* Wait for the sensor to be ready to accept I2C commands by polling the
* command register to wait for initialization to complete.
*/
usleep_range(44500, 50000);
ret = mt9m114_poll_command(sensor, MT9M114_COMMAND_REGISTER_SET_STATE);
if (ret < 0)
goto error_clock;
if (sensor->bus_cfg.bus_type == V4L2_MBUS_PARALLEL) {
/*
* In parallel mode (OE set to low), the sensor will enter the
* streaming state after initialization. Enter the standby
* manually to stop streaming.
*/
ret = mt9m114_set_state(sensor,
MT9M114_SYS_STATE_ENTER_STANDBY);
if (ret < 0)
goto error_clock;
}
/*
* Before issuing any Set-State command, we must ensure that the sensor
* reaches the standby mode (either initiated manually above in
* parallel mode, or automatically after reset in MIPI mode).
*/
ret = mt9m114_poll_state(sensor, MT9M114_SYS_STATE_STANDBY);
if (ret < 0)
goto error_clock;
return 0;
error_clock:
clk_disable_unprepare(sensor->clk);
error_regulator:
regulator_bulk_disable(ARRAY_SIZE(sensor->supplies), sensor->supplies);
return ret;
}
static void mt9m114_power_off(struct mt9m114 *sensor)
{
clk_disable_unprepare(sensor->clk);
regulator_bulk_disable(ARRAY_SIZE(sensor->supplies), sensor->supplies);
}
static int __maybe_unused mt9m114_runtime_resume(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
int ret;
ret = mt9m114_power_on(sensor);
if (ret)
return ret;
ret = mt9m114_initialize(sensor);
if (ret) {
mt9m114_power_off(sensor);
return ret;
}
return 0;
}
static int __maybe_unused mt9m114_runtime_suspend(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
mt9m114_power_off(sensor);
return 0;
}
static const struct dev_pm_ops mt9m114_pm_ops = {
SET_RUNTIME_PM_OPS(mt9m114_runtime_suspend, mt9m114_runtime_resume, NULL)
};
/* -----------------------------------------------------------------------------
* Probe & Remove
*/
static int mt9m114_verify_link_frequency(struct mt9m114 *sensor,
unsigned int pixrate)
{
unsigned int link_freq = sensor->bus_cfg.bus_type == V4L2_MBUS_CSI2_DPHY
? pixrate * 8 : pixrate * 2;
if (sensor->bus_cfg.nr_of_link_frequencies != 1 ||
sensor->bus_cfg.link_frequencies[0] != link_freq)
return -EINVAL;
return 0;
}
static int mt9m114_clk_init(struct mt9m114 *sensor)
{
unsigned int pixrate;
/* Hardcode the PLL multiplier and dividers to default settings. */
sensor->pll.m = 32;
sensor->pll.n = 1;
sensor->pll.p = 7;
/*
* Calculate the pixel rate and link frequency. The CSI-2 bus is clocked
* for 16-bit per pixel, transmitted in DDR over a single lane. For
* parallel mode, the sensor ouputs one pixel in two PIXCLK cycles.
*/
/*
* Check if EXTCLK fits the configured link frequency. Bypass the PLL
* in this case.
*/
pixrate = clk_get_rate(sensor->clk) / 2;
if (mt9m114_verify_link_frequency(sensor, pixrate) == 0) {
sensor->pixrate = pixrate;
sensor->bypass_pll = true;
return 0;
}
/* Check if the PLL configuration fits the configured link frequency. */
pixrate = clk_get_rate(sensor->clk) * sensor->pll.m
/ ((sensor->pll.n + 1) * (sensor->pll.p + 1));
if (mt9m114_verify_link_frequency(sensor, pixrate) == 0) {
sensor->pixrate = pixrate;
sensor->bypass_pll = false;
return 0;
}
dev_err(&sensor->client->dev, "Unsupported DT link-frequencies\n");
return -EINVAL;
}
static int mt9m114_identify(struct mt9m114 *sensor)
{
u64 major, minor, release, customer;
u64 value;
int ret;
ret = cci_read(sensor->regmap, MT9M114_CHIP_ID, &value, NULL);
if (ret) {
dev_err(&sensor->client->dev, "Failed to read chip ID\n");
return -ENXIO;
}
if (value != 0x2481) {
dev_err(&sensor->client->dev, "Invalid chip ID 0x%04llx\n",
value);
return -ENXIO;
}
cci_read(sensor->regmap, MT9M114_MON_MAJOR_VERSION, &major, &ret);
cci_read(sensor->regmap, MT9M114_MON_MINOR_VERSION, &minor, &ret);
cci_read(sensor->regmap, MT9M114_MON_RELEASE_VERSION, &release, &ret);
cci_read(sensor->regmap, MT9M114_CUSTOMER_REV, &customer, &ret);
if (ret) {
dev_err(&sensor->client->dev, "Failed to read version\n");
return -ENXIO;
}
dev_dbg(&sensor->client->dev,
"monitor v%llu.%llu.%04llx customer rev 0x%04llx\n",
major, minor, release, customer);
return 0;
}
static int mt9m114_parse_dt(struct mt9m114 *sensor)
{
struct fwnode_handle *fwnode = dev_fwnode(&sensor->client->dev);
struct fwnode_handle *ep;
int ret;
ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
if (!ep) {
dev_err(&sensor->client->dev, "No endpoint found\n");
return -EINVAL;
}
sensor->bus_cfg.bus_type = V4L2_MBUS_UNKNOWN;
ret = v4l2_fwnode_endpoint_alloc_parse(ep, &sensor->bus_cfg);
fwnode_handle_put(ep);
if (ret < 0) {
dev_err(&sensor->client->dev, "Failed to parse endpoint\n");
goto error;
}
switch (sensor->bus_cfg.bus_type) {
case V4L2_MBUS_CSI2_DPHY:
case V4L2_MBUS_PARALLEL:
break;
default:
dev_err(&sensor->client->dev, "unsupported bus type %u\n",
sensor->bus_cfg.bus_type);
ret = -EINVAL;
goto error;
}
return 0;
error:
v4l2_fwnode_endpoint_free(&sensor->bus_cfg);
return ret;
}
static int mt9m114_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct mt9m114 *sensor;
int ret;
sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
if (!sensor)
return -ENOMEM;
sensor->client = client;
sensor->regmap = devm_cci_regmap_init_i2c(client, 16);
if (IS_ERR(sensor->regmap)) {
dev_err(dev, "Unable to initialize I2C\n");
return -ENODEV;
}
ret = mt9m114_parse_dt(sensor);
if (ret < 0)
return ret;
/* Acquire clocks, GPIOs and regulators. */
sensor->clk = devm_clk_get(dev, NULL);
if (IS_ERR(sensor->clk)) {
ret = PTR_ERR(sensor->clk);
dev_err_probe(dev, ret, "Failed to get clock\n");
goto error_ep_free;
}
sensor->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(sensor->reset)) {
ret = PTR_ERR(sensor->reset);
dev_err_probe(dev, ret, "Failed to get reset GPIO\n");
goto error_ep_free;
}
sensor->supplies[0].supply = "vddio";
sensor->supplies[1].supply = "vdd";
sensor->supplies[2].supply = "vaa";
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(sensor->supplies),
sensor->supplies);
if (ret < 0) {
dev_err_probe(dev, ret, "Failed to get regulators\n");
goto error_ep_free;
}
ret = mt9m114_clk_init(sensor);
if (ret)
goto error_ep_free;
/*
* Identify the sensor. 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, and initialize it after identification
* to reach the same state as if resumed through runtime PM.
*/
ret = mt9m114_power_on(sensor);
if (ret < 0) {
dev_err_probe(dev, ret, "Could not power on the device\n");
goto error_ep_free;
}
ret = mt9m114_identify(sensor);
if (ret < 0)
goto error_power_off;
ret = mt9m114_initialize(sensor);
if (ret < 0)
goto error_power_off;
/*
* 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 subdevices. */
ret = mt9m114_pa_init(sensor);
if (ret < 0)
goto error_pm_cleanup;
ret = mt9m114_ifp_init(sensor);
if (ret < 0)
goto error_pa_cleanup;
ret = v4l2_async_register_subdev(&sensor->ifp.sd);
if (ret < 0)
goto error_ifp_cleanup;
/*
* Decrease the PM usage count. The device will get suspended after the
* autosuspend delay, turning the power off.
*/
pm_runtime_put_autosuspend(dev);
return 0;
error_ifp_cleanup:
mt9m114_ifp_cleanup(sensor);
error_pa_cleanup:
mt9m114_pa_cleanup(sensor);
error_pm_cleanup:
pm_runtime_disable(dev);
pm_runtime_put_noidle(dev);
error_power_off:
mt9m114_power_off(sensor);
error_ep_free:
v4l2_fwnode_endpoint_free(&sensor->bus_cfg);
return ret;
}
static void mt9m114_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
struct device *dev = &client->dev;
v4l2_async_unregister_subdev(&sensor->ifp.sd);
mt9m114_ifp_cleanup(sensor);
mt9m114_pa_cleanup(sensor);
v4l2_fwnode_endpoint_free(&sensor->bus_cfg);
/*
* Disable runtime PM. In case runtime PM is disabled in the kernel,
* make sure to turn power off manually.
*/
pm_runtime_disable(dev);
if (!pm_runtime_status_suspended(dev))
mt9m114_power_off(sensor);
pm_runtime_set_suspended(dev);
}
static const struct of_device_id mt9m114_of_ids[] = {
{ .compatible = "onnn,mt9m114" },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, mt9m114_of_ids);
static struct i2c_driver mt9m114_driver = {
.driver = {
.name = "mt9m114",
.pm = &mt9m114_pm_ops,
.of_match_table = mt9m114_of_ids,
},
.probe = mt9m114_probe,
.remove = mt9m114_remove,
};
module_i2c_driver(mt9m114_driver);
MODULE_DESCRIPTION("onsemi MT9M114 Sensor Driver");
MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
MODULE_LICENSE("GPL");