+++ /dev/null
-/*
- * imx274.c - IMX274 CMOS Image Sensor driver
- *
- * Copyright (C) 2017, Leopard Imaging, Inc.
- *
- * Leon Luo <leonl@leopardimaging.com>
- * Edwin Zou <edwinz@leopardimaging.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/debugfs.h>
-#include <linux/delay.h>
-#include <linux/gpio.h>
-#include <linux/gpio/consumer.h>
-#include <linux/i2c.h>
-#include <linux/kernel.h>
-#include <linux/media.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_gpio.h>
-#include <linux/ratelimit.h>
-#include <linux/regmap.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/uaccess.h>
-#include <linux/videodev2.h>
-#include <media/media-entity.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-event.h>
-#include <media/v4l2-image-sizes.h>
-#include <media/v4l2-mediabus.h>
-#include <media/v4l2-subdev.h>
-
-static int debug;
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Debug level (0-2)");
-
-/*
- * See "SHR, SVR Setting" in datasheet
- */
-#define IMX274_DEFAULT_FRAME_LENGTH (4550)
-#define IMX274_MAX_FRAME_LENGTH (0x000fffff)
-
-/*
- * See "Frame Rate Adjustment" in datasheet
- */
-#define IMX274_PIXCLK_CONST1 (72000000)
-#define IMX274_PIXCLK_CONST2 (1000000)
-
-/*
- * The input gain is shifted by IMX274_GAIN_SHIFT to get
- * decimal number. The real gain is
- * (float)input_gain_value / (1 << IMX274_GAIN_SHIFT)
- */
-#define IMX274_GAIN_SHIFT (8)
-#define IMX274_GAIN_SHIFT_MASK ((1 << IMX274_GAIN_SHIFT) - 1)
-
-/*
- * See "Analog Gain" and "Digital Gain" in datasheet
- * min gain is 1X
- * max gain is calculated based on IMX274_GAIN_REG_MAX
- */
-#define IMX274_GAIN_REG_MAX (1957)
-#define IMX274_MIN_GAIN (0x01 << IMX274_GAIN_SHIFT)
-#define IMX274_MAX_ANALOG_GAIN ((2048 << IMX274_GAIN_SHIFT)\
- / (2048 - IMX274_GAIN_REG_MAX))
-#define IMX274_MAX_DIGITAL_GAIN (8)
-#define IMX274_DEF_GAIN (20 << IMX274_GAIN_SHIFT)
-#define IMX274_GAIN_CONST (2048) /* for gain formula */
-
-/*
- * 1 line time in us = (HMAX / 72), minimal is 4 lines
- */
-#define IMX274_MIN_EXPOSURE_TIME (4 * 260 / 72)
-
-#define IMX274_DEFAULT_MODE IMX274_MODE_3840X2160
-#define IMX274_MAX_WIDTH (3840)
-#define IMX274_MAX_HEIGHT (2160)
-#define IMX274_MAX_FRAME_RATE (120)
-#define IMX274_MIN_FRAME_RATE (5)
-#define IMX274_DEF_FRAME_RATE (60)
-
-/*
- * register SHR is limited to (SVR value + 1) x VMAX value - 4
- */
-#define IMX274_SHR_LIMIT_CONST (4)
-
-/*
- * Constants for sensor reset delay
- */
-#define IMX274_RESET_DELAY1 (2000)
-#define IMX274_RESET_DELAY2 (2200)
-
-/*
- * shift and mask constants
- */
-#define IMX274_SHIFT_8_BITS (8)
-#define IMX274_SHIFT_16_BITS (16)
-#define IMX274_MASK_LSB_2_BITS (0x03)
-#define IMX274_MASK_LSB_3_BITS (0x07)
-#define IMX274_MASK_LSB_4_BITS (0x0f)
-#define IMX274_MASK_LSB_8_BITS (0x00ff)
-
-#define DRIVER_NAME "IMX274"
-
-/*
- * IMX274 register definitions
- */
-#define IMX274_FRAME_LENGTH_ADDR_1 0x30FA /* VMAX, MSB */
-#define IMX274_FRAME_LENGTH_ADDR_2 0x30F9 /* VMAX */
-#define IMX274_FRAME_LENGTH_ADDR_3 0x30F8 /* VMAX, LSB */
-#define IMX274_SVR_REG_MSB 0x300F /* SVR */
-#define IMX274_SVR_REG_LSB 0x300E /* SVR */
-#define IMX274_HMAX_REG_MSB 0x30F7 /* HMAX */
-#define IMX274_HMAX_REG_LSB 0x30F6 /* HMAX */
-#define IMX274_COARSE_TIME_ADDR_MSB 0x300D /* SHR */
-#define IMX274_COARSE_TIME_ADDR_LSB 0x300C /* SHR */
-#define IMX274_ANALOG_GAIN_ADDR_LSB 0x300A /* ANALOG GAIN LSB */
-#define IMX274_ANALOG_GAIN_ADDR_MSB 0x300B /* ANALOG GAIN MSB */
-#define IMX274_DIGITAL_GAIN_REG 0x3012 /* Digital Gain */
-#define IMX274_VFLIP_REG 0x301A /* VERTICAL FLIP */
-#define IMX274_STANDBY_REG 0x3000 /* STANDBY */
-
-#define IMX274_TABLE_WAIT_MS 0
-#define IMX274_TABLE_END 1
-
-/*
- * imx274 I2C operation related structure
- */
-struct reg_8 {
- u16 addr;
- u8 val;
-};
-
-#define imx274_reg struct reg_8
-
-static struct regmap_config imx274_regmap_config = {
- .reg_bits = 16,
- .val_bits = 8,
- .cache_type = REGCACHE_RBTREE,
-};
-
-/*
- * imx274 format related structure
- */
-struct imx274_frmfmt {
- u32 mbus_code;
- enum v4l2_colorspace colorspace;
- struct v4l2_frmsize_discrete size;
- int mode;
-};
-
-/*
- * imx274 test pattern related structure
- */
-enum {
- TEST_PATTERN_DISABLED = 0,
- TEST_PATTERN_ALL_000H,
- TEST_PATTERN_ALL_FFFH,
- TEST_PATTERN_ALL_555H,
- TEST_PATTERN_ALL_AAAH,
- TEST_PATTERN_VSP_5AH, /* VERTICAL STRIPE PATTERN 555H/AAAH */
- TEST_PATTERN_VSP_A5H, /* VERTICAL STRIPE PATTERN AAAH/555H */
- TEST_PATTERN_VSP_05H, /* VERTICAL STRIPE PATTERN 000H/555H */
- TEST_PATTERN_VSP_50H, /* VERTICAL STRIPE PATTERN 555H/000H */
- TEST_PATTERN_VSP_0FH, /* VERTICAL STRIPE PATTERN 000H/FFFH */
- TEST_PATTERN_VSP_F0H, /* VERTICAL STRIPE PATTERN FFFH/000H */
- TEST_PATTERN_H_COLOR_BARS,
- TEST_PATTERN_V_COLOR_BARS,
-};
-
-static const char * const tp_qmenu[] = {
- "Disabled",
- "All 000h Pattern",
- "All FFFh Pattern",
- "All 555h Pattern",
- "All AAAh Pattern",
- "Vertical Stripe (555h / AAAh)",
- "Vertical Stripe (AAAh / 555h)",
- "Vertical Stripe (000h / 555h)",
- "Vertical Stripe (555h / 000h)",
- "Vertical Stripe (000h / FFFh)",
- "Vertical Stripe (FFFh / 000h)",
- "Horizontal Color Bars",
- "Vertical Color Bars",
-};
-
-/*
- * All-pixel scan mode (10-bit)
- * imx274 mode1(refer to datasheet) register configuration with
- * 3840x2160 resolution, raw10 data and mipi four lane output
- */
-static const imx274_reg imx274_mode1_3840x2160_raw10[] = {
- {0x3004, 0x01},
- {0x3005, 0x01},
- {0x3006, 0x00},
- {0x3007, 0x02},
-
- {0x3018, 0xA2}, /* output XVS, HVS */
-
- {0x306B, 0x05},
- {0x30E2, 0x01},
- {0x30F6, 0x07}, /* HMAX, 263 */
- {0x30F7, 0x01}, /* HMAX */
-
- {0x30dd, 0x01}, /* crop to 2160 */
- {0x30de, 0x06},
- {0x30df, 0x00},
- {0x30e0, 0x12},
- {0x30e1, 0x00},
- {0x3037, 0x01}, /* to crop to 3840 */
- {0x3038, 0x0c},
- {0x3039, 0x00},
- {0x303a, 0x0c},
- {0x303b, 0x0f},
-
- {0x30EE, 0x01},
- {0x3130, 0x86},
- {0x3131, 0x08},
- {0x3132, 0x7E},
- {0x3133, 0x08},
- {0x3342, 0x0A},
- {0x3343, 0x00},
- {0x3344, 0x16},
- {0x3345, 0x00},
- {0x33A6, 0x01},
- {0x3528, 0x0E},
- {0x3554, 0x1F},
- {0x3555, 0x01},
- {0x3556, 0x01},
- {0x3557, 0x01},
- {0x3558, 0x01},
- {0x3559, 0x00},
- {0x355A, 0x00},
- {0x35BA, 0x0E},
- {0x366A, 0x1B},
- {0x366B, 0x1A},
- {0x366C, 0x19},
- {0x366D, 0x17},
- {0x3A41, 0x08},
-
- {IMX274_TABLE_END, 0x00}
-};
-
-/*
- * Horizontal/vertical 2/2-line binning
- * (Horizontal and vertical weightedbinning, 10-bit)
- * imx274 mode3(refer to datasheet) register configuration with
- * 1920x1080 resolution, raw10 data and mipi four lane output
- */
-static const imx274_reg imx274_mode3_1920x1080_raw10[] = {
- {0x3004, 0x02},
- {0x3005, 0x21},
- {0x3006, 0x00},
- {0x3007, 0x11},
-
- {0x3018, 0xA2}, /* output XVS, HVS */
-
- {0x306B, 0x05},
- {0x30E2, 0x02},
-
- {0x30F6, 0x04}, /* HMAX, 260 */
- {0x30F7, 0x01}, /* HMAX */
-
- {0x30dd, 0x01}, /* to crop to 1920x1080 */
- {0x30de, 0x05},
- {0x30df, 0x00},
- {0x30e0, 0x04},
- {0x30e1, 0x00},
- {0x3037, 0x01},
- {0x3038, 0x0c},
- {0x3039, 0x00},
- {0x303a, 0x0c},
- {0x303b, 0x0f},
-
- {0x30EE, 0x01},
- {0x3130, 0x4E},
- {0x3131, 0x04},
- {0x3132, 0x46},
- {0x3133, 0x04},
- {0x3342, 0x0A},
- {0x3343, 0x00},
- {0x3344, 0x1A},
- {0x3345, 0x00},
- {0x33A6, 0x01},
- {0x3528, 0x0E},
- {0x3554, 0x00},
- {0x3555, 0x01},
- {0x3556, 0x01},
- {0x3557, 0x01},
- {0x3558, 0x01},
- {0x3559, 0x00},
- {0x355A, 0x00},
- {0x35BA, 0x0E},
- {0x366A, 0x1B},
- {0x366B, 0x1A},
- {0x366C, 0x19},
- {0x366D, 0x17},
- {0x3A41, 0x08},
-
- {IMX274_TABLE_END, 0x00}
-};
-
-/*
- * Vertical 2/3 subsampling binning horizontal 3 binning
- * imx274 mode5(refer to datasheet) register configuration with
- * 1280x720 resolution, raw10 data and mipi four lane output
- */
-static const imx274_reg imx274_mode5_1280x720_raw10[] = {
- {0x3004, 0x03},
- {0x3005, 0x31},
- {0x3006, 0x00},
- {0x3007, 0x09},
-
- {0x3018, 0xA2}, /* output XVS, HVS */
-
- {0x306B, 0x05},
- {0x30E2, 0x03},
-
- {0x30F6, 0x04}, /* HMAX, 260 */
- {0x30F7, 0x01}, /* HMAX */
-
- {0x30DD, 0x01},
- {0x30DE, 0x07},
- {0x30DF, 0x00},
- {0x40E0, 0x04},
- {0x30E1, 0x00},
- {0x3030, 0xD4},
- {0x3031, 0x02},
- {0x3032, 0xD0},
- {0x3033, 0x02},
-
- {0x30EE, 0x01},
- {0x3130, 0xE2},
- {0x3131, 0x02},
- {0x3132, 0xDE},
- {0x3133, 0x02},
- {0x3342, 0x0A},
- {0x3343, 0x00},
- {0x3344, 0x1B},
- {0x3345, 0x00},
- {0x33A6, 0x01},
- {0x3528, 0x0E},
- {0x3554, 0x00},
- {0x3555, 0x01},
- {0x3556, 0x01},
- {0x3557, 0x01},
- {0x3558, 0x01},
- {0x3559, 0x00},
- {0x355A, 0x00},
- {0x35BA, 0x0E},
- {0x366A, 0x1B},
- {0x366B, 0x19},
- {0x366C, 0x17},
- {0x366D, 0x17},
- {0x3A41, 0x04},
-
- {IMX274_TABLE_END, 0x00}
-};
-
-/*
- * imx274 first step register configuration for
- * starting stream
- */
-static const imx274_reg imx274_start_1[] = {
- {IMX274_STANDBY_REG, 0x12},
- {IMX274_TABLE_END, 0x00}
-};
-
-/*
- * imx274 second step register configuration for
- * starting stream
- */
-static const imx274_reg imx274_start_2[] = {
- {0x3120, 0xF0}, /* clock settings */
- {0x3121, 0x00}, /* clock settings */
- {0x3122, 0x02}, /* clock settings */
- {0x3129, 0x9C}, /* clock settings */
- {0x312A, 0x02}, /* clock settings */
- {0x312D, 0x02}, /* clock settings */
-
- {0x310B, 0x00},
-
- /* PLSTMG */
- {0x304C, 0x00}, /* PLSTMG01 */
- {0x304D, 0x03},
- {0x331C, 0x1A},
- {0x331D, 0x00},
- {0x3502, 0x02},
- {0x3529, 0x0E},
- {0x352A, 0x0E},
- {0x352B, 0x0E},
- {0x3538, 0x0E},
- {0x3539, 0x0E},
- {0x3553, 0x00},
- {0x357D, 0x05},
- {0x357F, 0x05},
- {0x3581, 0x04},
- {0x3583, 0x76},
- {0x3587, 0x01},
- {0x35BB, 0x0E},
- {0x35BC, 0x0E},
- {0x35BD, 0x0E},
- {0x35BE, 0x0E},
- {0x35BF, 0x0E},
- {0x366E, 0x00},
- {0x366F, 0x00},
- {0x3670, 0x00},
- {0x3671, 0x00},
-
- /* PSMIPI */
- {0x3304, 0x32}, /* PSMIPI1 */
- {0x3305, 0x00},
- {0x3306, 0x32},
- {0x3307, 0x00},
- {0x3590, 0x32},
- {0x3591, 0x00},
- {0x3686, 0x32},
- {0x3687, 0x00},
-
- {IMX274_TABLE_END, 0x00}
-};
-
-/*
- * imx274 third step register configuration for
- * starting stream
- */
-static const imx274_reg imx274_start_3[] = {
- {IMX274_STANDBY_REG, 0x00},
- {0x303E, 0x02}, /* SYS_MODE = 2 */
- {IMX274_TABLE_END, 0x00}
-};
-
-/*
- * imx274 forth step register configuration for
- * starting stream
- */
-static const imx274_reg imx274_start_4[] = {
- {0x30F4, 0x00},
- {0x3018, 0xA2}, /* XHS VHS OUTUPT */
- {IMX274_TABLE_END, 0x00}
-};
-
-/*
- * imx274 register configuration for stoping stream
- */
-static const imx274_reg imx274_stop[] = {
- {IMX274_STANDBY_REG, 0x01},
- {IMX274_TABLE_END, 0x00}
-};
-
-/*
- * imx274 disable test pattern register configuration
- */
-static const imx274_reg imx274_tp_disabled[] = {
- {0x303C, 0x00},
- {0x377F, 0x00},
- {0x3781, 0x00},
- {0x370B, 0x00},
- {IMX274_TABLE_END, 0x00}
-};
-
-/*
- * imx274 test pattern register configuration
- * reg 0x303D defines the test pattern modes
- */
-static imx274_reg imx274_tp_regs[] = {
- {0x303D, 0x00},
- {0x303C, 0x11},
- {0x370E, 0x01},
- {0x377F, 0x01},
- {0x3781, 0x01},
- {0x370B, 0x11},
- {IMX274_TABLE_END, 0x00}
-};
-
-/*
- * imx274 mode related structure
- */
-enum {
- IMX274_MODE_3840X2160,
- IMX274_MODE_1920X1080,
- IMX274_MODE_1280X720,
-
- IMX274_MODE_START_STREAM_1,
- IMX274_MODE_START_STREAM_2,
- IMX274_MODE_START_STREAM_3,
- IMX274_MODE_START_STREAM_4,
- IMX274_MODE_STOP_STREAM
-};
-
-static const imx274_reg *mode_table[] = {
- [IMX274_MODE_3840X2160] = imx274_mode1_3840x2160_raw10,
- [IMX274_MODE_1920X1080] = imx274_mode3_1920x1080_raw10,
- [IMX274_MODE_1280X720] = imx274_mode5_1280x720_raw10,
-
- [IMX274_MODE_START_STREAM_1] = imx274_start_1,
- [IMX274_MODE_START_STREAM_2] = imx274_start_2,
- [IMX274_MODE_START_STREAM_3] = imx274_start_3,
- [IMX274_MODE_START_STREAM_4] = imx274_start_4,
- [IMX274_MODE_STOP_STREAM] = imx274_stop,
-};
-
-/*
- * imx274 format related structure
- */
-static const struct imx274_frmfmt imx274_formats[] = {
- {MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_COLORSPACE_SRGB, {3840, 2160},
- IMX274_MODE_3840X2160},
- {MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_COLORSPACE_SRGB, {1920, 1080},
- IMX274_MODE_1920X1080},
- {MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_COLORSPACE_SRGB, {1280, 720},
- IMX274_MODE_1280X720},
-};
-
-/*
- * minimal frame length for each mode
- * refer to datasheet section "Frame Rate Adjustment (CSI-2)"
- */
-static int min_frame_len[] = {
- 4550, /* mode 1, 4K */
- 2310, /* mode 3, 1080p */
- 2310 /* mode 5, 720p */
-};
-
-/*
- * minimal numbers of SHR register
- * refer to datasheet table "Shutter Setting (CSI-2)"
- */
-static int min_SHR[] = {
- 12, /* mode 1, 4K */
- 8, /* mode 3, 1080p */
- 8 /* mode 5, 720p */
-};
-
-static int max_frame_rate[] = {
- 60, /* mode 1 , 4K */
- 120, /* mode 3, 1080p */
- 120 /* mode 5, 720p */
-};
-
-/*
- * Number of clocks per internal offset period
- * a constant based on mode
- * refer to section "Integration Time in Each Readout Drive Mode (CSI-2)"
- * in the datasheet
- * for the implemented 3 modes, it happens to be the same number
- */
-static const int nocpiop[] = {
- 112, /* mode 1 , 4K */
- 112, /* mode 3, 1080p */
- 112 /* mode 5, 720p */
-};
-
-/*
- * struct imx274_ctrls - imx274 ctrl structure
- * @handler: V4L2 ctrl handler structure
- * @exposure: Pointer to expsure ctrl structure
- * @gain: Pointer to gain ctrl structure
- * @vflip: Pointer to vflip ctrl structure
- * @test_pattern: Pointer to test pattern ctrl structure
- */
-struct imx274_ctrls {
- struct v4l2_ctrl_handler handler;
- struct v4l2_ctrl *exposure;
- struct v4l2_ctrl *gain;
- struct v4l2_ctrl *vflip;
- struct v4l2_ctrl *test_pattern;
-};
-
-/*
- * struct stim274 - imx274 device structure
- * @sd: V4L2 subdevice structure
- * @pd: Media pad structure
- * @client: Pointer to I2C client
- * @ctrls: imx274 control structure
- * @format: V4L2 media bus frame format structure
- * @frame_rate: V4L2 frame rate structure
- * @regmap: Pointer to regmap structure
- * @reset_gpio: Pointer to reset gpio
- * @lock: Mutex structure
- * @mode_index: Resolution mode index
- */
-struct stimx274 {
- struct v4l2_subdev sd;
- struct media_pad pad;
- struct i2c_client *client;
- struct imx274_ctrls ctrls;
- struct v4l2_mbus_framefmt format;
- struct v4l2_fract frame_interval;
- struct regmap *regmap;
- struct gpio_desc *reset_gpio;
- struct mutex lock; /* mutex lock for operations */
- u32 mode_index;
-};
-
-/*
- * Function declaration
- */
-static int imx274_set_gain(struct stimx274 *priv, s64 val);
-static int imx274_set_exposure(struct stimx274 *priv, s64 val);
-static int imx274_set_vflip(struct stimx274 *priv, int val);
-static int imx274_set_test_pattern(struct stimx274 *priv, int val);
-static int imx274_set_frame_interval(struct stimx274 *priv,
- struct v4l2_fract frame_interval);
-
-static inline void msleep_range(unsigned int delay_base)
-{
- usleep_range(delay_base * 1000, delay_base * 1000 + 500);
-}
-
-/*
- * v4l2_ctrl and v4l2_subdev related operations
- */
-static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
-{
- return &container_of(ctrl->handler,
- struct stimx274, ctrls.handler)->sd;
-}
-
-static inline struct stimx274 *to_imx274(struct v4l2_subdev *sd)
-{
- return container_of(sd, struct stimx274, sd);
-}
-
-/*
- * imx274_regmap_util_write_table_8 - Function for writing register table
- * @regmap: Pointer to device reg map structure
- * @table: Table containing register values
- * @wait_ms_addr: Flag for performing delay
- * @end_addr: Flag for incating end of table
- *
- * This is used to write register table into sensor's reg map.
- *
- * Return: 0 on success, errors otherwise
- */
-static int imx274_regmap_util_write_table_8(struct regmap *regmap,
- const struct reg_8 table[],
- u16 wait_ms_addr, u16 end_addr)
-{
- int err;
- const struct reg_8 *next;
- u8 val;
-
- int range_start = -1;
- int range_count = 0;
- u8 range_vals[16];
- int max_range_vals = ARRAY_SIZE(range_vals);
-
- for (next = table;; next++) {
- if ((next->addr != range_start + range_count) ||
- (next->addr == end_addr) ||
- (next->addr == wait_ms_addr) ||
- (range_count == max_range_vals)) {
- if (range_count == 1)
- err = regmap_write(regmap,
- range_start, range_vals[0]);
- else if (range_count > 1)
- err = regmap_bulk_write(regmap, range_start,
- &range_vals[0],
- range_count);
-
- if (err)
- return err;
-
- range_start = -1;
- range_count = 0;
-
- /* Handle special address values */
- if (next->addr == end_addr)
- break;
-
- if (next->addr == wait_ms_addr) {
- msleep_range(next->val);
- continue;
- }
- }
-
- val = next->val;
-
- if (range_start == -1)
- range_start = next->addr;
-
- range_vals[range_count++] = val;
- }
- return 0;
-}
-
-static inline int imx274_read_reg(struct stimx274 *priv, u16 addr, u8 *val)
-{
- int err;
-
- err = regmap_read(priv->regmap, addr, (unsigned int *)val);
- if (err)
- v4l2_err(&priv->sd,
- "%s : i2c read failed, addr = %x\n", __func__, addr);
- else
- v4l2_dbg(2, debug, &priv->sd,
- "%s : addr 0x%x, val=0x%x\n", __func__,
- addr, *val);
- return err;
-}
-
-static inline int imx274_write_reg(struct stimx274 *priv, u16 addr, u8 val)
-{
- int err;
-
- err = regmap_write(priv->regmap, addr, val);
- if (err)
- v4l2_err(&priv->sd,
- "%s : i2c write failed, %x = %x\n", __func__,
- addr, val);
- else
- v4l2_dbg(2, debug, &priv->sd,
- "%s : addr 0x%x, val=0x%x\n", __func__,
- addr, val);
- return err;
-}
-
-static int imx274_write_table(struct stimx274 *priv, const imx274_reg table[])
-{
- return imx274_regmap_util_write_table_8(priv->regmap,
- table, IMX274_TABLE_WAIT_MS, IMX274_TABLE_END);
-}
-
-/*
- * imx274_start_stream - Function for starting stream per mode index
- * @priv: Pointer to device structure
- * @mode: Mode index value
- *
- * This is used to start steam per mode index.
- * mode = 0, start stream for sensor Mode 1: 4K/raw10
- * mode = 1, start stream for sensor Mode 3: 1080p/raw10
- * mode = 2, start stream for sensor Mode 5: 720p/raw10
- *
- * Return: 0 on success, errors otherwise
- */
-static int imx274_start_stream(struct stimx274 *priv, int mode)
-{
- int err = 0;
-
- err = imx274_write_table(priv, mode_table[IMX274_MODE_START_STREAM_1]);
- if (err)
- return err;
-
- err = imx274_write_table(priv, mode_table[IMX274_MODE_START_STREAM_2]);
- if (err)
- return err;
-
- err = imx274_write_table(priv, mode_table[mode]);
- if (err)
- return err;
-
- /*
- * Refer to "Standby Cancel Sequence when using CSI-2" in
- * imx274 datasheet, it should wait 10ms or more here.
- * give it 1 extra ms for margin
- */
- msleep_range(11);
- err = imx274_write_table(priv, mode_table[IMX274_MODE_START_STREAM_3]);
- if (err)
- return err;
-
- /*
- * Refer to "Standby Cancel Sequence when using CSI-2" in
- * imx274 datasheet, it should wait 7ms or more here.
- * give it 1 extra ms for margin
- */
- msleep_range(8);
- err = imx274_write_table(priv, mode_table[IMX274_MODE_START_STREAM_4]);
- if (err)
- return err;
-
- v4l2_dbg(1, debug, &priv->sd, "%s : finished\n", __func__);
- return 0;
-}
-
-/*
- * imx274_reset - Function called to reset the sensor
- * @priv: Pointer to device structure
- * @rst: Input value for determining the sensor's end state after reset
- *
- * Set the senor in reset and then
- * if rst = 0, keep it in reset;
- * if rst = 1, bring it out of reset.
- *
- */
-static void imx274_reset(struct stimx274 *priv, int rst)
-{
- gpiod_set_value_cansleep(priv->reset_gpio, 0);
- usleep_range(IMX274_RESET_DELAY1, IMX274_RESET_DELAY2);
- gpiod_set_value_cansleep(priv->reset_gpio, !!rst);
- usleep_range(IMX274_RESET_DELAY1, IMX274_RESET_DELAY2);
-}
-
-/**
- * imx274_s_ctrl - This is used to set the imx274 V4L2 controls
- * @ctrl: V4L2 control to be set
- *
- * This function is used to set the V4L2 controls for the imx274 sensor.
- *
- * Return: 0 on success, errors otherwise
- */
-static int imx274_s_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
- struct stimx274 *imx274 = to_imx274(sd);
- int ret = -EINVAL;
-
- v4l2_dbg(1, debug, &imx274->sd,
- "%s : s_ctrl: %s, value: %d\n", __func__,
- ctrl->name, ctrl->val);
-
- mutex_lock(&imx274->lock);
-
- switch (ctrl->id) {
- case V4L2_CID_EXPOSURE:
- v4l2_dbg(1, debug, &imx274->sd,
- "%s : set V4L2_CID_EXPOSURE\n", __func__);
- ret = imx274_set_exposure(imx274, ctrl->val);
- break;
-
- case V4L2_CID_GAIN:
- v4l2_dbg(1, debug, &imx274->sd,
- "%s : set V4L2_CID_GAIN\n", __func__);
- ret = imx274_set_gain(imx274, ctrl->val);
- break;
-
- case V4L2_CID_VFLIP:
- v4l2_dbg(1, debug, &imx274->sd,
- "%s : set V4L2_CID_VFLIP\n", __func__);
- ret = imx274_set_vflip(imx274, ctrl->val);
- break;
-
- case V4L2_CID_TEST_PATTERN:
- v4l2_dbg(1, debug, &imx274->sd,
- "%s : set V4L2_CID_TEST_PATTERN\n", __func__);
- ret = imx274_set_test_pattern(imx274, ctrl->val);
- break;
- }
-
- mutex_unlock(&imx274->lock);
- return ret;
-}
-
-/**
- * imx274_get_fmt - Get the pad format
- * @sd: Pointer to V4L2 Sub device structure
- * @cfg: Pointer to sub device pad information structure
- * @fmt: Pointer to pad level media bus format
- *
- * This function is used to get the pad format information.
- *
- * Return: 0 on success
- */
-static int imx274_get_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_format *fmt)
-{
- struct stimx274 *imx274 = to_imx274(sd);
-
- if (fmt->pad)
- return -EINVAL;
-
- fmt->format = imx274->format;
-
- return 0;
-}
-
-/**
- * imx274_set_fmt - This is used to set the pad format
- * @sd: Pointer to V4L2 Sub device structure
- * @cfg: Pointer to sub device pad information structure
- * @format: Pointer to pad level media bus format
- *
- * This function is used to set the pad format.
- *
- * Return: 0 on success
- */
-static int imx274_set_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_format *format)
-{
- struct v4l2_mbus_framefmt *fmt = &format->format;
- struct stimx274 *imx274 = to_imx274(sd);
- struct i2c_client *client = imx274->client;
- int index;
-
- v4l2_dbg(1, debug, client,
- "%s: width = %d height = %d code = %d mbus_code = %d\n",
- __func__, fmt->width, fmt->height, fmt->code,
- imx274_formats[imx274->mode_index].mbus_code);
-
- if (format->pad)
- return -EINVAL;
-
- mutex_lock(&imx274->lock);
-
- for (index = 0; index < ARRAY_SIZE(imx274_formats); index++) {
- if (imx274_formats[index].size.width == fmt->width &&
- imx274_formats[index].size.height == fmt->height)
- break;
- }
-
- if (index >= ARRAY_SIZE(imx274_formats)) {
- /* default to first format */
- index = 0;
- }
-
- imx274->mode_index = index;
-
- if (fmt->width > IMX274_MAX_WIDTH)
- fmt->width = IMX274_MAX_WIDTH;
- if (fmt->height > IMX274_MAX_HEIGHT)
- fmt->height = IMX274_MAX_HEIGHT;
- fmt->width = fmt->width & (~IMX274_MASK_LSB_2_BITS);
- fmt->height = fmt->height & (~IMX274_MASK_LSB_2_BITS);
- fmt->field = V4L2_FIELD_NONE;
-
- if (format->which == V4L2_SUBDEV_FORMAT_TRY)
- cfg->try_fmt = *fmt;
- else
- imx274->format = *fmt;
-
- mutex_unlock(&imx274->lock);
- return 0;
-}
-
-/**
- * imx274_g_frame_interval - Get the frame interval
- * @sd: Pointer to V4L2 Sub device structure
- * @fi: Pointer to V4l2 Sub device frame interval structure
- *
- * This function is used to get the frame interval.
- *
- * Return: 0 on success
- */
-static int imx274_g_frame_interval(struct v4l2_subdev *sd,
- struct v4l2_subdev_frame_interval *fi)
-{
- struct stimx274 *imx274 = to_imx274(sd);
-
- fi->interval = imx274->frame_interval;
- v4l2_dbg(1, debug, &imx274->sd, "%s frame rate = %d / %d\n",
- __func__, imx274->frame_interval.numerator,
- imx274->frame_interval.denominator);
-
- return 0;
-}
-
-/**
- * imx274_s_frame_interval - Set the frame interval
- * @sd: Pointer to V4L2 Sub device structure
- * @fi: Pointer to V4l2 Sub device frame interval structure
- *
- * This function is used to set the frame intervavl.
- *
- * Return: 0 on success
- */
-static int imx274_s_frame_interval(struct v4l2_subdev *sd,
- struct v4l2_subdev_frame_interval *fi)
-{
- struct stimx274 *imx274 = to_imx274(sd);
- struct v4l2_ctrl *ctrl = imx274->ctrls.exposure;
- int min, max, def;
- int ret;
-
- mutex_lock(&imx274->lock);
- ret = imx274_set_frame_interval(imx274, fi->interval);
- mutex_unlock(&imx274->lock);
-
- if (!ret) {
- /*
- * exposure time range is decided by frame interval
- * need to update it after frame interal changes
- */
- min = IMX274_MIN_EXPOSURE_TIME;
- max = fi->interval.numerator * 1000000
- / fi->interval.denominator;
- def = max;
- if (v4l2_ctrl_modify_range(ctrl, min, max, 1, def))
- v4l2_err(sd, "Exposure ctrl range update failed\n");
-
- /* update exposure time accordingly */
- mutex_lock(&imx274->lock);
- imx274_set_exposure(imx274, imx274->ctrls.exposure->val);
- mutex_unlock(&imx274->lock);
-
- v4l2_dbg(1, debug, &imx274->sd, "set frame interval to %uus\n",
- fi->interval.numerator * 1000000
- / fi->interval.denominator);
- }
-
- return ret;
-}
-
-/**
- * imx274_load_default - load default control values
- * @priv: Pointer to device structure
- *
- * Return: 0 on success, errors otherwise
- */
-static int imx274_load_default(struct stimx274 *priv)
-{
- struct v4l2_control control;
- int ret;
-
- /* load default control values */
- priv->frame_interval.numerator = 1;
- priv->frame_interval.denominator = IMX274_DEF_FRAME_RATE;
- priv->ctrls.exposure->val = 1000000 / IMX274_DEF_FRAME_RATE;
- priv->ctrls.gain->val = IMX274_DEF_GAIN;
- priv->ctrls.vflip->val = 0;
- priv->ctrls.test_pattern->val = TEST_PATTERN_DISABLED;
-
- /* update frame rate */
- ret = imx274_set_frame_interval(priv,
- priv->frame_interval);
- if (ret)
- return ret;
-
- /* update exposure time */
- control.id = V4L2_CID_EXPOSURE;
- control.value = priv->ctrls.exposure->val;
- ret = v4l2_s_ctrl(NULL, &priv->ctrls.handler, &control);
- if (ret)
- return ret;
-
- /* update gain */
- control.id = V4L2_CID_GAIN;
- control.value = priv->ctrls.gain->val;
- ret = v4l2_s_ctrl(NULL, &priv->ctrls.handler, &control);
- if (ret)
- return ret;
-
- /* update vflip */
- control.id = V4L2_CID_VFLIP;
- control.value = priv->ctrls.vflip->val;
- ret = v4l2_s_ctrl(NULL, &priv->ctrls.handler, &control);
- if (ret)
- return ret;
-
- return 0;
-}
-
-/**
- * imx274_s_stream - It is used to start/stop the streaming.
- * @sd: V4L2 Sub device
- * @on: Flag (True / False)
- *
- * This function controls the start or stop of streaming for the
- * imx274 sensor.
- *
- * Return: 0 on success, errors otherwise
- */
-static int imx274_s_stream(struct v4l2_subdev *sd, int on)
-{
- struct stimx274 *imx274 = to_imx274(sd);
- struct v4l2_control control;
- int ret = 0;
-
- v4l2_dbg(1, debug, &imx274->sd, "%s : %s, mode index = %d\n", __func__,
- on ? "Stream Start" : "Stream Stop", imx274->mode_index);
-
- mutex_lock(&imx274->lock);
-
- if (on) {
- /* start stream */
- ret = imx274_start_stream(imx274, imx274->mode_index);
- if (ret)
- goto fail;
-
- /*
- * update frame rate & expsoure. if the last mode is different,
- * HMAX could be changed. As the result, frame rate & exposure
- * are changed.
- * gain is not affected.
- */
- ret = imx274_set_frame_interval(imx274,
- imx274->frame_interval);
- if (ret)
- goto fail;
-
- mutex_unlock(&imx274->lock);
-
- control.id = V4L2_CID_EXPOSURE;
- control.value = imx274->ctrls.exposure->val;
- ret = v4l2_s_ctrl(NULL, &imx274->ctrls.handler, &control);
- if (ret)
- goto fail;
-
- mutex_lock(&imx274->lock);
-
- } else {
- /* stop stream */
- ret = imx274_write_table(imx274,
- mode_table[IMX274_MODE_STOP_STREAM]);
- if (ret)
- goto fail;
- }
-
- mutex_unlock(&imx274->lock);
- v4l2_dbg(1, debug, &imx274->sd,
- "%s : Done: mode = %d\n", __func__, imx274->mode_index);
- return 0;
-
-fail:
- mutex_unlock(&imx274->lock);
- v4l2_err(&imx274->sd, "s_stream failed\n");
- return ret;
-}
-
-static inline void imx274_calculate_frame_length_regs(imx274_reg *regs,
- u32 frame_length)
-{
- regs->addr = IMX274_FRAME_LENGTH_ADDR_1;
- regs->val = (frame_length >> IMX274_SHIFT_16_BITS)
- & IMX274_MASK_LSB_4_BITS;
- (regs + 1)->addr = IMX274_FRAME_LENGTH_ADDR_2;
- (regs + 1)->val = (frame_length >> IMX274_SHIFT_8_BITS)
- & IMX274_MASK_LSB_8_BITS;
- (regs + 2)->addr = IMX274_FRAME_LENGTH_ADDR_3;
- (regs + 2)->val = (frame_length) & IMX274_MASK_LSB_8_BITS;
-}
-
-static inline void imx274_calculate_coarse_time_regs(imx274_reg *regs,
- u32 coarse_time)
-{
- regs->addr = IMX274_COARSE_TIME_ADDR_MSB;
- regs->val = (coarse_time >> IMX274_SHIFT_8_BITS)
- & IMX274_MASK_LSB_8_BITS;
- (regs + 1)->addr = IMX274_COARSE_TIME_ADDR_LSB;
- (regs + 1)->val = (coarse_time) & IMX274_MASK_LSB_8_BITS;
-}
-
-static inline void imx274_calculate_gain_regs(imx274_reg *regs, u16 gain)
-{
- regs->addr = IMX274_ANALOG_GAIN_ADDR_MSB;
- regs->val = (gain >> IMX274_SHIFT_8_BITS) & IMX274_MASK_LSB_3_BITS;
-
- (regs + 1)->addr = IMX274_ANALOG_GAIN_ADDR_LSB;
- (regs + 1)->val = (gain) & IMX274_MASK_LSB_8_BITS;
-}
-
-/*
- * imx274_get_frame_length - Function for obtaining current frame length
- * @priv: Pointer to device structure
- * @val: Pointer to obainted value
- *
- * frame_length = vmax x (svr + 1), in unit of hmax.
- *
- * Return: 0 on success
- */
-static int imx274_get_frame_length(struct stimx274 *priv, s64 *val)
-{
- int err;
- u16 svr;
- u32 vmax;
- u8 reg_val[3];
-
- /* svr */
- err = imx274_read_reg(priv, IMX274_SVR_REG_LSB, ®_val[0]);
- err |= imx274_read_reg(priv, IMX274_SVR_REG_MSB, ®_val[1]);
- if (err)
- goto fail;
- svr = (reg_val[1] << IMX274_SHIFT_8_BITS) + reg_val[0];
-
- /* vmax */
- err = imx274_read_reg(priv, IMX274_FRAME_LENGTH_ADDR_3, ®_val[0]);
- err |= imx274_read_reg(priv, IMX274_FRAME_LENGTH_ADDR_2, ®_val[1]);
- err |= imx274_read_reg(priv, IMX274_FRAME_LENGTH_ADDR_1, ®_val[2]);
- if (err)
- goto fail;
- vmax = ((reg_val[2] & IMX274_MASK_LSB_3_BITS) << IMX274_SHIFT_16_BITS)
- + (reg_val[1] << IMX274_SHIFT_8_BITS) + reg_val[0];
-
- *val = vmax * (svr + 1);
- return 0;
-
-fail:
- v4l2_err(&priv->sd, "%s error = %d\n", __func__, err);
- return err;
-}
-
-static int imx274_clamp_coarse_time(struct stimx274 *priv, s64 *val,
- s64 *frame_length)
-{
- int err;
-
- err = imx274_get_frame_length(priv, frame_length);
- if (err)
- return err;
-
- if (*frame_length < min_frame_len[priv->mode_index])
- *frame_length = min_frame_len[priv->mode_index];
-
- *val = *frame_length - *val; /* convert to raw shr */
- if (*val > *frame_length - IMX274_SHR_LIMIT_CONST)
- *val = *frame_length - IMX274_SHR_LIMIT_CONST;
- else if (*val < min_SHR[priv->mode_index])
- *val = min_SHR[priv->mode_index];
-
- return 0;
-}
-
-/*
- * imx274_set_digital gain - Function called when setting digital gain
- * @priv: Pointer to device structure
- * @dgain: Value of digital gain.
- *
- * Digital gain has only 4 steps: 1x, 2x, 4x, and 8x
- *
- * Return: 0 on success
- */
-static int imx274_set_digital_gain(struct stimx274 *priv, u32 dgain)
-{
- int ret;
- u8 reg_val;
-
- switch (dgain) {
- case 1:
- reg_val = 0;
- break;
- case 2:
- reg_val = 1;
- break;
- case 4:
- reg_val = 2;
- break;
- case 8:
- reg_val = 3;
- break;
- default:
- return -EINVAL;
- }
-
- ret = imx274_write_reg(priv, IMX274_DIGITAL_GAIN_REG,
- reg_val & IMX274_MASK_LSB_4_BITS);
- return ret;
-}
-
-/*
- * imx274_set_gain - Function called when setting gain
- * @priv: Pointer to device structure
- * @val: Value of gain. the real value = val << IMX274_GAIN_SHIFT;
- *
- * Set the gain based on input value.
- * The caller should hold the mutex lock imx274->lock if necessary
- *
- * Return: 0 on success
- */
-static int imx274_set_gain(struct stimx274 *priv, s64 val)
-{
- imx274_reg reg_list[2];
- int err;
- u32 gain, analog_gain, digital_gain, gain_reg;
- int i;
-
- gain = (u32)(val);
-
- v4l2_dbg(1, debug, &priv->sd,
- "%s : input gain = %d.%d\n", __func__,
- gain >> IMX274_GAIN_SHIFT,
- ((gain & IMX274_GAIN_SHIFT_MASK) * 100) >> IMX274_GAIN_SHIFT);
-
- if (gain > IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN)
- gain = IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN;
- else if (gain < IMX274_MIN_GAIN)
- gain = IMX274_MIN_GAIN;
-
- if (gain <= IMX274_MAX_ANALOG_GAIN)
- digital_gain = 1;
- else if (gain <= IMX274_MAX_ANALOG_GAIN * 2)
- digital_gain = 2;
- else if (gain <= IMX274_MAX_ANALOG_GAIN * 4)
- digital_gain = 4;
- else
- digital_gain = IMX274_MAX_DIGITAL_GAIN;
-
- analog_gain = gain / digital_gain;
-
- v4l2_dbg(2, debug, &priv->sd,
- "%s : digital gain = %d, analog gain = %d.%d\n",
- __func__, digital_gain, analog_gain >> IMX274_GAIN_SHIFT,
- ((analog_gain & IMX274_GAIN_SHIFT_MASK) * 100)
- >> IMX274_GAIN_SHIFT);
-
- err = imx274_set_digital_gain(priv, digital_gain);
- if (err)
- goto fail;
-
- /* convert to register value, refer to imx274 datasheet */
- gain_reg = (u32)IMX274_GAIN_CONST -
- (IMX274_GAIN_CONST << IMX274_GAIN_SHIFT) / analog_gain;
- if (gain_reg > IMX274_GAIN_REG_MAX)
- gain_reg = IMX274_GAIN_REG_MAX;
-
- imx274_calculate_gain_regs(reg_list, (u16)gain_reg);
-
- for (i = 0; i < ARRAY_SIZE(reg_list); i++) {
- err = imx274_write_reg(priv, reg_list[i].addr,
- reg_list[i].val);
- if (err)
- goto fail;
- }
-
- /* convert register value back to gain value */
- priv->ctrls.gain->val = (IMX274_GAIN_CONST << IMX274_GAIN_SHIFT)
- / (IMX274_GAIN_CONST - gain_reg)
- * digital_gain;
-
- v4l2_dbg(1, debug, &priv->sd,
- "%s : GAIN control success, gain_reg = %d, new gain = %d\n",
- __func__, gain_reg, priv->ctrls.gain->val);
-
- return 0;
-
-fail:
- v4l2_err(&priv->sd, "%s error = %d\n", __func__, err);
- return err;
-}
-
-/*
- * imx274_set_coarse_time - Function called when setting SHR value
- * @priv: Pointer to device structure
- * @val: Value for exposure time in number of line_length, or [HMAX]
- *
- * Set SHR value based on input value.
- *
- * Return: 0 on success
- */
-static int imx274_set_coarse_time(struct stimx274 *priv, s64 *val)
-{
- imx274_reg reg_list[2];
- int err;
- s64 coarse_time, frame_length;
- int i;
-
- coarse_time = *val;
-
- /* convert exposure_time to appropriate SHR value */
- err = imx274_clamp_coarse_time(priv, &coarse_time, &frame_length);
- if (err)
- goto fail;
-
- /* prepare SHR registers */
- imx274_calculate_coarse_time_regs(reg_list, coarse_time);
-
- /* write to SHR registers */
- for (i = 0; i < ARRAY_SIZE(reg_list); i++) {
- err = imx274_write_reg(priv, reg_list[i].addr,
- reg_list[i].val);
- if (err)
- goto fail;
- }
-
- *val = frame_length - coarse_time;
- return 0;
-
-fail:
- v4l2_err(&priv->sd, "%s error = %d\n", __func__, err);
- return err;
-}
-
-/*
- * imx274_set_exposure - Function called when setting exposure time
- * @priv: Pointer to device structure
- * @val: Variable for exposure time, in the unit of micro-second
- *
- * Set exposure time based on input value.
- * The caller should hold the mutex lock imx274->lock if necessary
- *
- * Return: 0 on success
- */
-static int imx274_set_exposure(struct stimx274 *priv, s64 val)
-{
- int err;
- u16 hmax;
- u8 reg_val[2];
- s64 coarse_time; /* exposure time in unit of line (HMAX)*/
-
- /* step 1: convert input exposure_time (val) into number of 1[HMAX] */
-
- /* obtain HMAX value */
- err = imx274_read_reg(priv, IMX274_HMAX_REG_LSB, ®_val[0]);
- if (err)
- goto fail;
- err = imx274_read_reg(priv, IMX274_HMAX_REG_MSB, ®_val[1]);
- if (err)
- goto fail;
- hmax = (reg_val[1] << IMX274_SHIFT_8_BITS) + reg_val[0];
- if (hmax == 0) {
- err = -EINVAL;
- goto fail;
- }
-
- coarse_time = (IMX274_PIXCLK_CONST1 * val / IMX274_PIXCLK_CONST2
- - nocpiop[priv->mode_index]) / hmax;
-
- if (coarse_time < 0)
- coarse_time = 0;
-
- /* step 2: convert exposure_time into SHR value */
-
- /* set SHR */
- err = imx274_set_coarse_time(priv, &coarse_time);
- if (err)
- goto fail;
-
- priv->ctrls.exposure->val =
- (coarse_time * hmax + nocpiop[priv->mode_index])
- * IMX274_PIXCLK_CONST2 / IMX274_PIXCLK_CONST1;
-
- v4l2_dbg(1, debug, &priv->sd,
- "%s : EXPOSURE control success\n", __func__);
- return 0;
-
-fail:
- v4l2_err(&priv->sd, "%s error = %d\n", __func__, err);
- return err;
-}
-
-/*
- * imx274_set_vflip - Function called when setting vertical flip
- * @priv: Pointer to device structure
- * @val: Value for vflip setting
- *
- * Set vertical flip based on input value.
- * val = 0: normal, no vertical flip
- * val = 1: vertical flip enabled
- * The caller should hold the mutex lock imx274->lock if necessary
- *
- * Return: 0 on success
- */
-static int imx274_set_vflip(struct stimx274 *priv, int val)
-{
- int err;
-
- err = imx274_write_reg(priv, IMX274_VFLIP_REG, val);
- if (err) {
- v4l2_err(&priv->sd, "VFILP control error\n");
- return err;
- }
-
- v4l2_dbg(1, debug, &priv->sd,
- "%s : VFLIP control success\n", __func__);
- priv->ctrls.vflip->val = val;
- return 0;
-}
-
-/*
- * imx274_set_test_pattern - Function called when setting test pattern
- * @priv: Pointer to device structure
- * @val: Variable for test pattern
- *
- * Set to different test patterns based on input value.
- *
- * Return: 0 on success
- */
-static int imx274_set_test_pattern(struct stimx274 *priv, int val)
-{
- int err = 0;
-
- if (val == TEST_PATTERN_DISABLED) {
- err = imx274_write_table(priv, imx274_tp_disabled);
- } else if (val <= TEST_PATTERN_V_COLOR_BARS) {
- imx274_tp_regs[0].val = val - 1;
- err = imx274_write_table(priv, imx274_tp_regs);
- } else {
- v4l2_err(&priv->sd, "TEST PATTERN control our of range\n");
- return -EINVAL;
- }
-
- if (err)
- goto fail;
-
- v4l2_dbg(1, debug, &priv->sd,
- "%s : TEST PATTERN control success\n", __func__);
-
- priv->ctrls.test_pattern->val = val;
- return 0;
-
-fail:
- v4l2_err(&priv->sd, "%s error = %d\n", __func__, err);
- return err;
-}
-
-/*
- * imx274_set_frame_length - Function called when setting frame length
- * @priv: Pointer to device structure
- * @val: Variable for frame length (= VMAX, i.e. vertical drive period length)
- *
- * Set frame length based on input value.
- *
- * Return: 0 on success
- */
-static int imx274_set_frame_length(struct stimx274 *priv, u32 val)
-{
- imx274_reg reg_list[3];
- int err;
- u32 frame_length;
- int i;
-
- v4l2_dbg(1, debug, &priv->sd, "%s : input length = %d\n",
- __func__, val);
-
- frame_length = (u32)val;
-
- imx274_calculate_frame_length_regs(reg_list, frame_length);
- for (i = 0; i < ARRAY_SIZE(reg_list); i++) {
- err = imx274_write_reg(priv, reg_list[i].addr,
- reg_list[i].val);
- if (err)
- goto fail;
- }
-
- return 0;
-
-fail:
- v4l2_err(&priv->sd, "%s error = %d\n", __func__, err);
- return err;
-}
-
-/*
- * imx274_set_frame_interval - Function called when setting frame interval
- * @priv: Pointer to device structure
- * @frame_interval: Variable for frame interval
- *
- * Change frame interval by updating VMAX value
- * The caller should hold the mutex lock imx274->lock if necessary
- *
- * Return: 0 on success
- */
-static int imx274_set_frame_interval(struct stimx274 *priv,
- struct v4l2_fract frame_interval)
-{
- int err;
- s64 frame_length, req_frame_rate;
- u16 svr;
- u16 hmax;
- u8 reg_val[2];
-
- v4l2_dbg(1, debug, &priv->sd, "%s: input frame interval = %d / %d",
- __func__, frame_interval.numerator,
- frame_interval.denominator);
-
- if (frame_interval.denominator == 0) {
- err = -EINVAL;
- goto fail;
- }
-
- req_frame_rate = (u64)(frame_interval.denominator
- / frame_interval.numerator);
-
- /* boundary check */
- if (req_frame_rate > max_frame_rate[priv->mode_index]) {
- frame_interval.numerator = 1;
- frame_interval.denominator =
- max_frame_rate[priv->mode_index];
- } else if (req_frame_rate < IMX274_MIN_FRAME_RATE) {
- frame_interval.numerator = 1;
- frame_interval.denominator = IMX274_MIN_FRAME_RATE;
- }
-
- /*
- * VMAX = 1/frame_rate x 72M / (SVR+1) / HMAX
- * frame_length (i.e. VMAX) = (frame_interval) x 72M /(SVR+1) / HMAX
- */
-
- /* SVR */
- err = imx274_read_reg(priv, IMX274_SVR_REG_LSB, ®_val[0]);
- err |= imx274_read_reg(priv, IMX274_SVR_REG_MSB, ®_val[1]);
- if (err)
- goto fail;
- svr = (reg_val[1] << IMX274_SHIFT_8_BITS) + reg_val[0];
- v4l2_dbg(2, debug, &priv->sd,
- "%s : register SVR = %d\n", __func__, svr);
-
- /* HMAX */
- err = imx274_read_reg(priv, IMX274_HMAX_REG_LSB, ®_val[0]);
- err |= imx274_read_reg(priv, IMX274_HMAX_REG_MSB, ®_val[1]);
- if (err)
- goto fail;
- hmax = (reg_val[1] << IMX274_SHIFT_8_BITS) + reg_val[0];
- v4l2_dbg(2, debug, &priv->sd,
- "%s : register HMAX = %d\n", __func__, hmax);
-
- frame_length = IMX274_PIXCLK_CONST1 / (svr + 1) / hmax
- * frame_interval.numerator
- / frame_interval.denominator;
-
- err = imx274_set_frame_length(priv, frame_length);
- if (err)
- goto fail;
-
- priv->frame_interval = frame_interval;
- return 0;
-
-fail:
- v4l2_err(&priv->sd, "%s error = %d\n", __func__, err);
- return err;
-}
-
-/*
- * imx274_open - Called on v4l2_open()
- * @sd: Pointer to V4L2 sub device structure
- * @fh: Pointer to V4L2 File handle
- *
- * This function is called on v4l2_open().
- *
- * Return: 0 on success
- */
-static int imx274_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
-{
- return 0;
-}
-
-static int imx274_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
-{
- return 0;
-}
-
-static const struct v4l2_subdev_pad_ops imx274_pad_ops = {
- .get_fmt = imx274_get_fmt,
- .set_fmt = imx274_set_fmt,
-};
-
-static const struct v4l2_subdev_video_ops imx274_video_ops = {
- .g_frame_interval = imx274_g_frame_interval,
- .s_frame_interval = imx274_s_frame_interval,
- .s_stream = imx274_s_stream,
-};
-
-static const struct v4l2_subdev_internal_ops imx274_subdev_internal_ops = {
- .open = imx274_open,
- .close = imx274_close
-};
-
-static const struct v4l2_subdev_core_ops imx274_core_ops = {
-};
-
-static const struct v4l2_subdev_ops imx274_subdev_ops = {
- .core = &imx274_core_ops,
- .pad = &imx274_pad_ops,
- .video = &imx274_video_ops,
-};
-
-static const struct v4l2_ctrl_ops imx274_ctrl_ops = {
- .s_ctrl = imx274_s_ctrl,
-};
-
-static const struct of_device_id imx274_of_id_table[] = {
- { .compatible = "sony,imx274" },
- { }
-};
-
-MODULE_DEVICE_TABLE(of, imx274_of_id_table);
-static const struct i2c_device_id imx274_id[] = {
- { "IMX274", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, imx274_id);
-
-static int imx274_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct v4l2_subdev *sd;
- struct stimx274 *imx274;
- int ret;
-
- /* initialize imx274 */
- imx274 = devm_kzalloc(&client->dev, sizeof(*imx274), GFP_KERNEL);
- if (!imx274)
- return -ENOMEM;
-
- mutex_init(&imx274->lock);
-
- /* initialize regmap */
- imx274->regmap = devm_regmap_init_i2c(client, &imx274_regmap_config);
- if (IS_ERR(imx274->regmap)) {
- dev_err(&client->dev,
- "regmap init failed: %ld\n", PTR_ERR(imx274->regmap));
- return -ENODEV;
- }
-
- /* initialize subdevice */
- imx274->client = client;
- sd = &imx274->sd;
- v4l2_i2c_subdev_init(sd, client, &imx274_subdev_ops);
- strlcpy(sd->name, DRIVER_NAME, sizeof(sd->name));
- sd->internal_ops = &imx274_subdev_internal_ops;
- sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
-
- /* initialize subdev media pad */
- imx274->pad.flags = MEDIA_PAD_FL_SOURCE;
- sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
- ret = media_entity_pads_init(&sd->entity, 1, &imx274->pad);
- if (ret < 0) {
- dev_err(&client->dev,
- "%s : media entity init Failed %d\n", __func__, ret);
- return ret;
- }
-
- /* initialize sensor reset gpio */
- imx274->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
- GPIOD_OUT_HIGH);
- if (IS_ERR(imx274->reset_gpio)) {
- if (PTR_ERR(imx274->reset_gpio) != -EPROBE_DEFER)
- dev_err(&client->dev, "Reset GPIO not setup in DT");
- return PTR_ERR(imx274->reset_gpio);
- }
-
- /* pull sensor out of reset */
- imx274_reset(imx274, 1);
-
- /* initialize controls */
- ret = v4l2_ctrl_handler_init(&imx274->ctrls.handler, 2);
- if (ret < 0) {
- dev_err(&client->dev,
- "%s : ctrl handler init Failed\n", __func__);
- goto err_me;
- }
-
- /* add new controls */
- imx274->ctrls.test_pattern = v4l2_ctrl_new_std_menu_items(
- &imx274->ctrls.handler, &imx274_ctrl_ops,
- V4L2_CID_TEST_PATTERN,
- ARRAY_SIZE(tp_qmenu) - 1, 0, 0, tp_qmenu);
-
- imx274->ctrls.gain = v4l2_ctrl_new_std(&imx274->ctrls.handler,
- &imx274_ctrl_ops,
- V4L2_CID_GAIN, IMX274_MIN_GAIN,
- IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN, 1,
- IMX274_DEF_GAIN);
-
- imx274->ctrls.exposure = v4l2_ctrl_new_std(&imx274->ctrls.handler,
- &imx274_ctrl_ops,
- V4L2_CID_EXPOSURE, IMX274_MIN_EXPOSURE_TIME,
- 1000000 / IMX274_DEF_FRAME_RATE, 1,
- 1000000 / IMX274_DEF_FRAME_RATE);
-
- imx274->ctrls.vflip = v4l2_ctrl_new_std(&imx274->ctrls.handler,
- &imx274_ctrl_ops,
- V4L2_CID_VFLIP, 0, 1, 1, 0);
-
- imx274->sd.ctrl_handler = &imx274->ctrls.handler;
- if (imx274->ctrls.handler.error) {
- ret = imx274->ctrls.handler.error;
- goto err_ctrls;
- }
-
- /* setup default controls */
- ret = v4l2_ctrl_handler_setup(&imx274->ctrls.handler);
- if (ret) {
- dev_err(&client->dev,
- "Error %d setup default controls\n", ret);
- goto err_ctrls;
- }
-
- /* initialize format */
- imx274->mode_index = IMX274_MODE_3840X2160;
- imx274->format.width = imx274_formats[0].size.width;
- imx274->format.height = imx274_formats[0].size.height;
- imx274->format.field = V4L2_FIELD_NONE;
- imx274->format.code = MEDIA_BUS_FMT_SRGGB10_1X10;
- imx274->format.colorspace = V4L2_COLORSPACE_SRGB;
- imx274->frame_interval.numerator = 1;
- imx274->frame_interval.denominator = IMX274_DEF_FRAME_RATE;
-
- /* register subdevice */
- ret = v4l2_async_register_subdev(sd);
- if (ret < 0) {
- dev_err(&client->dev,
- "%s : v4l2_async_register_subdev failed %d\n",
- __func__, ret);
- goto err_ctrls;
- }
-
- /* load default control values */
- ret = imx274_load_default(imx274);
- if (ret)
- goto err_ctrls;
-
- v4l2_info(sd, "imx274 : imx274 probe success !\n");
- return 0;
-
-err_ctrls:
- v4l2_ctrl_handler_free(sd->ctrl_handler);
-err_me:
- media_entity_cleanup(&sd->entity);
- mutex_destroy(&imx274->lock);
- return ret;
-}
-
-static int imx274_remove(struct i2c_client *client)
-{
- int ret;
- struct v4l2_subdev *sd = i2c_get_clientdata(client);
- struct stimx274 *imx274 = to_imx274(sd);
-
- /* stop stream */
- ret = imx274_write_table(imx274,
- mode_table[IMX274_MODE_STOP_STREAM]);
- if (ret)
- return ret;
-
- v4l2_device_unregister_subdev(sd);
- v4l2_ctrl_handler_free(sd->ctrl_handler);
- media_entity_cleanup(&sd->entity);
- mutex_destroy(&imx274->lock);
- return 0;
-}
-
-static struct i2c_driver imx274_i2c_driver = {
- .driver = {
- .name = DRIVER_NAME,
- .of_match_table = imx274_of_id_table,
- },
- .probe = imx274_probe,
- .remove = imx274_remove,
- .id_table = imx274_id,
-};
-
-module_i2c_driver(imx274_i2c_driver);
-
-MODULE_AUTHOR("Leon Luo <leonl@leopardimaging.com>");
-MODULE_DESCRIPTION("IMX274 CMOS Image Sensor driver");
-MODULE_LICENSE("GPL v2");
projects / vajnamar / linux-xlnx.git / commitdiff