1016 lines
24 KiB
C
1016 lines
24 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2020 MediaTek Inc.
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/gpio/consumer.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <linux/regulator/consumer.h>
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#include <media/media-entity.h>
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#include <media/v4l2-async.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-fwnode.h>
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#include <media/v4l2-subdev.h>
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#define OV02A10_ID 0x2509
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#define OV02A10_ID_MASK GENMASK(15, 0)
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#define OV02A10_REG_CHIP_ID 0x02
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/* Bit[1] vertical upside down */
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/* Bit[0] horizontal mirror */
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#define REG_MIRROR_FLIP_CONTROL 0x3f
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/* Orientation */
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#define REG_MIRROR_FLIP_ENABLE 0x03
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/* Bit[2:0] MIPI transmission speed select */
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#define TX_SPEED_AREA_SEL 0xa1
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#define OV02A10_MIPI_TX_SPEED_DEFAULT 0x04
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#define REG_PAGE_SWITCH 0xfd
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#define REG_GLOBAL_EFFECTIVE 0x01
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#define REG_ENABLE BIT(0)
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#define REG_SC_CTRL_MODE 0xac
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#define SC_CTRL_MODE_STANDBY 0x00
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#define SC_CTRL_MODE_STREAMING 0x01
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/* Exposure control */
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#define OV02A10_EXP_SHIFT 8
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#define OV02A10_REG_EXPOSURE_H 0x03
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#define OV02A10_REG_EXPOSURE_L 0x04
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#define OV02A10_EXPOSURE_MIN 4
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#define OV02A10_EXPOSURE_MAX_MARGIN 4
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#define OV02A10_EXPOSURE_STEP 1
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/* Vblanking control */
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#define OV02A10_VTS_SHIFT 8
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#define OV02A10_REG_VTS_H 0x05
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#define OV02A10_REG_VTS_L 0x06
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#define OV02A10_VTS_MAX 0x209f
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#define OV02A10_BASE_LINES 1224
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/* Analog gain control */
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#define OV02A10_REG_GAIN 0x24
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#define OV02A10_GAIN_MIN 0x10
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#define OV02A10_GAIN_MAX 0xf8
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#define OV02A10_GAIN_STEP 0x01
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#define OV02A10_GAIN_DEFAULT 0x40
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/* Test pattern control */
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#define OV02A10_REG_TEST_PATTERN 0xb6
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#define HZ_PER_MHZ 1000000L
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#define OV02A10_LINK_FREQ_390MHZ (390 * HZ_PER_MHZ)
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#define OV02A10_ECLK_FREQ (24 * HZ_PER_MHZ)
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/* Number of lanes supported by this driver */
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#define OV02A10_DATA_LANES 1
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/* Bits per sample of sensor output */
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#define OV02A10_BITS_PER_SAMPLE 10
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static const char * const ov02a10_supply_names[] = {
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"dovdd", /* Digital I/O power */
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"avdd", /* Analog power */
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"dvdd", /* Digital core power */
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};
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struct ov02a10_reg {
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u8 addr;
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u8 val;
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};
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struct ov02a10_reg_list {
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u32 num_of_regs;
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const struct ov02a10_reg *regs;
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};
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struct ov02a10_mode {
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u32 width;
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u32 height;
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u32 exp_def;
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u32 hts_def;
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u32 vts_def;
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const struct ov02a10_reg_list reg_list;
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};
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struct ov02a10 {
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u32 eclk_freq;
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/* Indication of MIPI transmission speed select */
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u32 mipi_clock_voltage;
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struct clk *eclk;
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struct gpio_desc *pd_gpio;
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struct gpio_desc *rst_gpio;
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struct regulator_bulk_data supplies[ARRAY_SIZE(ov02a10_supply_names)];
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bool streaming;
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bool upside_down;
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/*
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* Serialize control access, get/set format, get selection
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* and start streaming.
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*/
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struct mutex mutex;
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struct v4l2_subdev subdev;
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struct media_pad pad;
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struct v4l2_mbus_framefmt fmt;
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struct v4l2_ctrl_handler ctrl_handler;
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struct v4l2_ctrl *exposure;
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const struct ov02a10_mode *cur_mode;
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};
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static inline struct ov02a10 *to_ov02a10(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct ov02a10, subdev);
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}
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/*
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* eclk 24Mhz
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* pclk 39Mhz
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* linelength 934(0x3a6)
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* framelength 1390(0x56E)
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* grabwindow_width 1600
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* grabwindow_height 1200
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* max_framerate 30fps
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* mipi_datarate per lane 780Mbps
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*/
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static const struct ov02a10_reg ov02a10_1600x1200_regs[] = {
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{0xfd, 0x01},
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{0xac, 0x00},
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{0xfd, 0x00},
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{0x2f, 0x29},
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{0x34, 0x00},
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{0x35, 0x21},
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{0x30, 0x15},
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{0x33, 0x01},
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{0xfd, 0x01},
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{0x44, 0x00},
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{0x2a, 0x4c},
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{0x2b, 0x1e},
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{0x2c, 0x60},
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{0x25, 0x11},
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{0x03, 0x01},
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{0x04, 0xae},
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{0x09, 0x00},
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{0x0a, 0x02},
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{0x06, 0xa6},
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{0x31, 0x00},
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{0x24, 0x40},
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{0x01, 0x01},
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{0xfb, 0x73},
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{0xfd, 0x01},
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{0x16, 0x04},
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{0x1c, 0x09},
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{0x21, 0x42},
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{0x12, 0x04},
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{0x13, 0x10},
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{0x11, 0x40},
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{0x33, 0x81},
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{0xd0, 0x00},
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{0xd1, 0x01},
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{0xd2, 0x00},
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{0x50, 0x10},
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{0x51, 0x23},
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{0x52, 0x20},
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{0x53, 0x10},
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{0x54, 0x02},
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{0x55, 0x20},
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{0x56, 0x02},
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{0x58, 0x48},
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{0x5d, 0x15},
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{0x5e, 0x05},
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{0x66, 0x66},
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{0x68, 0x68},
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{0x6b, 0x00},
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{0x6c, 0x00},
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{0x6f, 0x40},
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{0x70, 0x40},
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{0x71, 0x0a},
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{0x72, 0xf0},
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{0x73, 0x10},
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{0x75, 0x80},
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{0x76, 0x10},
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{0x84, 0x00},
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{0x85, 0x10},
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{0x86, 0x10},
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{0x87, 0x00},
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{0x8a, 0x22},
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{0x8b, 0x22},
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{0x19, 0xf1},
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{0x29, 0x01},
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{0xfd, 0x01},
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{0x9d, 0x16},
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{0xa0, 0x29},
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{0xa1, 0x04},
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{0xad, 0x62},
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{0xae, 0x00},
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{0xaf, 0x85},
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{0xb1, 0x01},
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{0x8e, 0x06},
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{0x8f, 0x40},
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{0x90, 0x04},
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{0x91, 0xb0},
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{0x45, 0x01},
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{0x46, 0x00},
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{0x47, 0x6c},
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{0x48, 0x03},
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{0x49, 0x8b},
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{0x4a, 0x00},
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{0x4b, 0x07},
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{0x4c, 0x04},
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{0x4d, 0xb7},
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{0xf0, 0x40},
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{0xf1, 0x40},
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{0xf2, 0x40},
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{0xf3, 0x40},
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{0x3f, 0x00},
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{0xfd, 0x01},
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{0x05, 0x00},
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{0x06, 0xa6},
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{0xfd, 0x01},
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};
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static const char * const ov02a10_test_pattern_menu[] = {
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"Disabled",
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"Eight Vertical Colour Bars",
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};
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static const s64 link_freq_menu_items[] = {
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OV02A10_LINK_FREQ_390MHZ,
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};
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static u64 to_pixel_rate(u32 f_index)
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{
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u64 pixel_rate = link_freq_menu_items[f_index] * 2 * OV02A10_DATA_LANES;
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do_div(pixel_rate, OV02A10_BITS_PER_SAMPLE);
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return pixel_rate;
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}
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static const struct ov02a10_mode supported_modes[] = {
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{
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.width = 1600,
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.height = 1200,
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.exp_def = 0x01ae,
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.hts_def = 0x03a6,
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.vts_def = 0x056e,
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.reg_list = {
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.num_of_regs = ARRAY_SIZE(ov02a10_1600x1200_regs),
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.regs = ov02a10_1600x1200_regs,
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},
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},
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};
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static int ov02a10_write_array(struct ov02a10 *ov02a10,
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const struct ov02a10_reg_list *r_list)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&ov02a10->subdev);
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unsigned int i;
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int ret;
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for (i = 0; i < r_list->num_of_regs; i++) {
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ret = i2c_smbus_write_byte_data(client, r_list->regs[i].addr,
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r_list->regs[i].val);
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if (ret < 0)
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return ret;
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}
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return 0;
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}
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static void ov02a10_fill_fmt(const struct ov02a10_mode *mode,
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struct v4l2_mbus_framefmt *fmt)
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{
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fmt->width = mode->width;
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fmt->height = mode->height;
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fmt->field = V4L2_FIELD_NONE;
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}
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static int ov02a10_set_fmt(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_format *fmt)
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{
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struct ov02a10 *ov02a10 = to_ov02a10(sd);
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struct v4l2_mbus_framefmt *mbus_fmt = &fmt->format;
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struct v4l2_mbus_framefmt *frame_fmt;
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int ret = 0;
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mutex_lock(&ov02a10->mutex);
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if (ov02a10->streaming && fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
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ret = -EBUSY;
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goto out_unlock;
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}
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/* Only one sensor mode supported */
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mbus_fmt->code = ov02a10->fmt.code;
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ov02a10_fill_fmt(ov02a10->cur_mode, mbus_fmt);
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if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
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frame_fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
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else
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frame_fmt = &ov02a10->fmt;
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*frame_fmt = *mbus_fmt;
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out_unlock:
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mutex_unlock(&ov02a10->mutex);
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return ret;
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}
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static int ov02a10_get_fmt(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_format *fmt)
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{
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struct ov02a10 *ov02a10 = to_ov02a10(sd);
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struct v4l2_mbus_framefmt *mbus_fmt = &fmt->format;
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mutex_lock(&ov02a10->mutex);
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if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
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fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
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} else {
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fmt->format = ov02a10->fmt;
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mbus_fmt->code = ov02a10->fmt.code;
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ov02a10_fill_fmt(ov02a10->cur_mode, mbus_fmt);
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}
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mutex_unlock(&ov02a10->mutex);
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return 0;
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}
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static int ov02a10_enum_mbus_code(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_mbus_code_enum *code)
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{
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struct ov02a10 *ov02a10 = to_ov02a10(sd);
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if (code->index != 0)
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return -EINVAL;
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code->code = ov02a10->fmt.code;
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return 0;
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}
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static int ov02a10_enum_frame_sizes(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_frame_size_enum *fse)
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{
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if (fse->index >= ARRAY_SIZE(supported_modes))
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return -EINVAL;
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fse->min_width = supported_modes[fse->index].width;
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fse->max_width = supported_modes[fse->index].width;
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fse->max_height = supported_modes[fse->index].height;
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fse->min_height = supported_modes[fse->index].height;
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return 0;
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}
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static int ov02a10_check_sensor_id(struct ov02a10 *ov02a10)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&ov02a10->subdev);
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u16 chip_id;
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int ret;
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/* Validate the chip ID */
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ret = i2c_smbus_read_word_swapped(client, OV02A10_REG_CHIP_ID);
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if (ret < 0)
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return ret;
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chip_id = le16_to_cpu((__force __le16)ret);
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if ((chip_id & OV02A10_ID_MASK) != OV02A10_ID) {
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dev_err(&client->dev, "unexpected sensor id(0x%04x)\n", chip_id);
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return -EINVAL;
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}
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return 0;
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}
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static int ov02a10_power_on(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct v4l2_subdev *sd = i2c_get_clientdata(client);
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struct ov02a10 *ov02a10 = to_ov02a10(sd);
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int ret;
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gpiod_set_value_cansleep(ov02a10->rst_gpio, 1);
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gpiod_set_value_cansleep(ov02a10->pd_gpio, 1);
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ret = clk_prepare_enable(ov02a10->eclk);
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if (ret < 0) {
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dev_err(dev, "failed to enable eclk\n");
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return ret;
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}
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ret = regulator_bulk_enable(ARRAY_SIZE(ov02a10_supply_names),
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ov02a10->supplies);
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if (ret < 0) {
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dev_err(dev, "failed to enable regulators\n");
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goto disable_clk;
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}
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usleep_range(5000, 6000);
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gpiod_set_value_cansleep(ov02a10->pd_gpio, 0);
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usleep_range(5000, 6000);
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gpiod_set_value_cansleep(ov02a10->rst_gpio, 0);
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usleep_range(5000, 6000);
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ret = ov02a10_check_sensor_id(ov02a10);
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if (ret)
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goto disable_regulator;
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return 0;
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disable_regulator:
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regulator_bulk_disable(ARRAY_SIZE(ov02a10_supply_names),
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ov02a10->supplies);
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disable_clk:
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clk_disable_unprepare(ov02a10->eclk);
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return ret;
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}
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static int ov02a10_power_off(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct v4l2_subdev *sd = i2c_get_clientdata(client);
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struct ov02a10 *ov02a10 = to_ov02a10(sd);
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gpiod_set_value_cansleep(ov02a10->rst_gpio, 1);
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clk_disable_unprepare(ov02a10->eclk);
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gpiod_set_value_cansleep(ov02a10->pd_gpio, 1);
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regulator_bulk_disable(ARRAY_SIZE(ov02a10_supply_names),
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ov02a10->supplies);
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return 0;
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}
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static int __ov02a10_start_stream(struct ov02a10 *ov02a10)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&ov02a10->subdev);
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const struct ov02a10_reg_list *reg_list;
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int ret;
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/* Apply default values of current mode */
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reg_list = &ov02a10->cur_mode->reg_list;
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ret = ov02a10_write_array(ov02a10, reg_list);
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if (ret)
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return ret;
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/* Apply customized values from user */
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ret = __v4l2_ctrl_handler_setup(ov02a10->subdev.ctrl_handler);
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if (ret)
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return ret;
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/* Set orientation to 180 degree */
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if (ov02a10->upside_down) {
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ret = i2c_smbus_write_byte_data(client, REG_MIRROR_FLIP_CONTROL,
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REG_MIRROR_FLIP_ENABLE);
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if (ret < 0) {
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dev_err(&client->dev, "failed to set orientation\n");
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return ret;
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}
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ret = i2c_smbus_write_byte_data(client, REG_GLOBAL_EFFECTIVE,
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REG_ENABLE);
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if (ret < 0)
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return ret;
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}
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/* Set MIPI TX speed according to DT property */
|
|
if (ov02a10->mipi_clock_voltage != OV02A10_MIPI_TX_SPEED_DEFAULT) {
|
|
ret = i2c_smbus_write_byte_data(client, TX_SPEED_AREA_SEL,
|
|
ov02a10->mipi_clock_voltage);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* Set stream on register */
|
|
return i2c_smbus_write_byte_data(client, REG_SC_CTRL_MODE,
|
|
SC_CTRL_MODE_STREAMING);
|
|
}
|
|
|
|
static int __ov02a10_stop_stream(struct ov02a10 *ov02a10)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(&ov02a10->subdev);
|
|
|
|
return i2c_smbus_write_byte_data(client, REG_SC_CTRL_MODE,
|
|
SC_CTRL_MODE_STANDBY);
|
|
}
|
|
|
|
static int ov02a10_entity_init_cfg(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg)
|
|
{
|
|
struct v4l2_subdev_format fmt = {
|
|
.which = V4L2_SUBDEV_FORMAT_TRY,
|
|
.format = {
|
|
.width = 1600,
|
|
.height = 1200,
|
|
}
|
|
};
|
|
|
|
ov02a10_set_fmt(sd, cfg, &fmt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ov02a10_s_stream(struct v4l2_subdev *sd, int on)
|
|
{
|
|
struct ov02a10 *ov02a10 = to_ov02a10(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(&ov02a10->subdev);
|
|
int ret;
|
|
|
|
mutex_lock(&ov02a10->mutex);
|
|
|
|
if (ov02a10->streaming == on) {
|
|
ret = 0;
|
|
goto unlock_and_return;
|
|
}
|
|
|
|
if (on) {
|
|
ret = pm_runtime_get_sync(&client->dev);
|
|
if (ret < 0) {
|
|
pm_runtime_put_noidle(&client->dev);
|
|
goto unlock_and_return;
|
|
}
|
|
|
|
ret = __ov02a10_start_stream(ov02a10);
|
|
if (ret) {
|
|
__ov02a10_stop_stream(ov02a10);
|
|
ov02a10->streaming = !on;
|
|
goto err_rpm_put;
|
|
}
|
|
} else {
|
|
__ov02a10_stop_stream(ov02a10);
|
|
pm_runtime_put(&client->dev);
|
|
}
|
|
|
|
ov02a10->streaming = on;
|
|
mutex_unlock(&ov02a10->mutex);
|
|
|
|
return 0;
|
|
|
|
err_rpm_put:
|
|
pm_runtime_put(&client->dev);
|
|
unlock_and_return:
|
|
mutex_unlock(&ov02a10->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct dev_pm_ops ov02a10_pm_ops = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
|
|
pm_runtime_force_resume)
|
|
SET_RUNTIME_PM_OPS(ov02a10_power_off, ov02a10_power_on, NULL)
|
|
};
|
|
|
|
static int ov02a10_set_exposure(struct ov02a10 *ov02a10, int val)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(&ov02a10->subdev);
|
|
int ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(client, REG_PAGE_SWITCH, REG_ENABLE);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(client, OV02A10_REG_EXPOSURE_H,
|
|
val >> OV02A10_EXP_SHIFT);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(client, OV02A10_REG_EXPOSURE_L, val);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return i2c_smbus_write_byte_data(client, REG_GLOBAL_EFFECTIVE,
|
|
REG_ENABLE);
|
|
}
|
|
|
|
static int ov02a10_set_gain(struct ov02a10 *ov02a10, int val)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(&ov02a10->subdev);
|
|
int ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(client, REG_PAGE_SWITCH, REG_ENABLE);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(client, OV02A10_REG_GAIN, val);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return i2c_smbus_write_byte_data(client, REG_GLOBAL_EFFECTIVE,
|
|
REG_ENABLE);
|
|
}
|
|
|
|
static int ov02a10_set_vblank(struct ov02a10 *ov02a10, int val)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(&ov02a10->subdev);
|
|
u32 vts = val + ov02a10->cur_mode->height - OV02A10_BASE_LINES;
|
|
int ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(client, REG_PAGE_SWITCH, REG_ENABLE);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(client, OV02A10_REG_VTS_H,
|
|
vts >> OV02A10_VTS_SHIFT);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(client, OV02A10_REG_VTS_L, vts);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return i2c_smbus_write_byte_data(client, REG_GLOBAL_EFFECTIVE,
|
|
REG_ENABLE);
|
|
}
|
|
|
|
static int ov02a10_set_test_pattern(struct ov02a10 *ov02a10, int pattern)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(&ov02a10->subdev);
|
|
int ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(client, REG_PAGE_SWITCH, REG_ENABLE);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(client, OV02A10_REG_TEST_PATTERN,
|
|
pattern);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(client, REG_GLOBAL_EFFECTIVE,
|
|
REG_ENABLE);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return i2c_smbus_write_byte_data(client, REG_SC_CTRL_MODE,
|
|
SC_CTRL_MODE_STREAMING);
|
|
}
|
|
|
|
static int ov02a10_set_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct ov02a10 *ov02a10 = container_of(ctrl->handler,
|
|
struct ov02a10, ctrl_handler);
|
|
struct i2c_client *client = v4l2_get_subdevdata(&ov02a10->subdev);
|
|
s64 max_expo;
|
|
int ret;
|
|
|
|
/* Propagate change of current control to all related controls */
|
|
if (ctrl->id == V4L2_CID_VBLANK) {
|
|
/* Update max exposure while meeting expected vblanking */
|
|
max_expo = ov02a10->cur_mode->height + ctrl->val -
|
|
OV02A10_EXPOSURE_MAX_MARGIN;
|
|
__v4l2_ctrl_modify_range(ov02a10->exposure,
|
|
ov02a10->exposure->minimum, max_expo,
|
|
ov02a10->exposure->step,
|
|
ov02a10->exposure->default_value);
|
|
}
|
|
|
|
/* V4L2 controls values will be applied only when power is already up */
|
|
if (!pm_runtime_get_if_in_use(&client->dev))
|
|
return 0;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_EXPOSURE:
|
|
ret = ov02a10_set_exposure(ov02a10, ctrl->val);
|
|
break;
|
|
case V4L2_CID_ANALOGUE_GAIN:
|
|
ret = ov02a10_set_gain(ov02a10, ctrl->val);
|
|
break;
|
|
case V4L2_CID_VBLANK:
|
|
ret = ov02a10_set_vblank(ov02a10, ctrl->val);
|
|
break;
|
|
case V4L2_CID_TEST_PATTERN:
|
|
ret = ov02a10_set_test_pattern(ov02a10, ctrl->val);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
};
|
|
|
|
pm_runtime_put(&client->dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct v4l2_subdev_video_ops ov02a10_video_ops = {
|
|
.s_stream = ov02a10_s_stream,
|
|
};
|
|
|
|
static const struct v4l2_subdev_pad_ops ov02a10_pad_ops = {
|
|
.init_cfg = ov02a10_entity_init_cfg,
|
|
.enum_mbus_code = ov02a10_enum_mbus_code,
|
|
.enum_frame_size = ov02a10_enum_frame_sizes,
|
|
.get_fmt = ov02a10_get_fmt,
|
|
.set_fmt = ov02a10_set_fmt,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops ov02a10_subdev_ops = {
|
|
.video = &ov02a10_video_ops,
|
|
.pad = &ov02a10_pad_ops,
|
|
};
|
|
|
|
static const struct media_entity_operations ov02a10_subdev_entity_ops = {
|
|
.link_validate = v4l2_subdev_link_validate,
|
|
};
|
|
|
|
static const struct v4l2_ctrl_ops ov02a10_ctrl_ops = {
|
|
.s_ctrl = ov02a10_set_ctrl,
|
|
};
|
|
|
|
static int ov02a10_initialize_controls(struct ov02a10 *ov02a10)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(&ov02a10->subdev);
|
|
const struct ov02a10_mode *mode;
|
|
struct v4l2_ctrl_handler *handler;
|
|
struct v4l2_ctrl *ctrl;
|
|
s64 exposure_max;
|
|
s64 vblank_def;
|
|
s64 pixel_rate;
|
|
s64 h_blank;
|
|
int ret;
|
|
|
|
handler = &ov02a10->ctrl_handler;
|
|
mode = ov02a10->cur_mode;
|
|
ret = v4l2_ctrl_handler_init(handler, 7);
|
|
if (ret)
|
|
return ret;
|
|
|
|
handler->lock = &ov02a10->mutex;
|
|
|
|
ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ, 0, 0,
|
|
link_freq_menu_items);
|
|
if (ctrl)
|
|
ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
|
|
pixel_rate = to_pixel_rate(0);
|
|
v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, 0, pixel_rate, 1,
|
|
pixel_rate);
|
|
|
|
h_blank = mode->hts_def - mode->width;
|
|
v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, h_blank, h_blank, 1,
|
|
h_blank);
|
|
|
|
vblank_def = mode->vts_def - mode->height;
|
|
v4l2_ctrl_new_std(handler, &ov02a10_ctrl_ops, V4L2_CID_VBLANK,
|
|
vblank_def, OV02A10_VTS_MAX - mode->height, 1,
|
|
vblank_def);
|
|
|
|
exposure_max = mode->vts_def - 4;
|
|
ov02a10->exposure = v4l2_ctrl_new_std(handler, &ov02a10_ctrl_ops,
|
|
V4L2_CID_EXPOSURE,
|
|
OV02A10_EXPOSURE_MIN,
|
|
exposure_max,
|
|
OV02A10_EXPOSURE_STEP,
|
|
mode->exp_def);
|
|
|
|
v4l2_ctrl_new_std(handler, &ov02a10_ctrl_ops,
|
|
V4L2_CID_ANALOGUE_GAIN, OV02A10_GAIN_MIN,
|
|
OV02A10_GAIN_MAX, OV02A10_GAIN_STEP,
|
|
OV02A10_GAIN_DEFAULT);
|
|
|
|
v4l2_ctrl_new_std_menu_items(handler, &ov02a10_ctrl_ops,
|
|
V4L2_CID_TEST_PATTERN,
|
|
ARRAY_SIZE(ov02a10_test_pattern_menu) - 1,
|
|
0, 0, ov02a10_test_pattern_menu);
|
|
|
|
if (handler->error) {
|
|
ret = handler->error;
|
|
dev_err(&client->dev, "failed to init controls(%d)\n", ret);
|
|
goto err_free_handler;
|
|
}
|
|
|
|
ov02a10->subdev.ctrl_handler = handler;
|
|
|
|
return 0;
|
|
|
|
err_free_handler:
|
|
v4l2_ctrl_handler_free(handler);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ov02a10_check_hwcfg(struct device *dev, struct ov02a10 *ov02a10)
|
|
{
|
|
struct fwnode_handle *ep;
|
|
struct fwnode_handle *fwnode = dev_fwnode(dev);
|
|
struct v4l2_fwnode_endpoint bus_cfg = {
|
|
.bus_type = V4L2_MBUS_CSI2_DPHY,
|
|
};
|
|
unsigned int i, j;
|
|
u32 clk_volt;
|
|
int ret;
|
|
|
|
if (!fwnode)
|
|
return -EINVAL;
|
|
|
|
ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
|
|
if (!ep)
|
|
return -ENXIO;
|
|
|
|
ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
|
|
fwnode_handle_put(ep);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Optional indication of MIPI clock voltage unit */
|
|
ret = fwnode_property_read_u32(ep, "ovti,mipi-clock-voltage",
|
|
&clk_volt);
|
|
|
|
if (!ret)
|
|
ov02a10->mipi_clock_voltage = clk_volt;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(link_freq_menu_items); i++) {
|
|
for (j = 0; j < bus_cfg.nr_of_link_frequencies; j++) {
|
|
if (link_freq_menu_items[i] ==
|
|
bus_cfg.link_frequencies[j])
|
|
break;
|
|
}
|
|
|
|
if (j == bus_cfg.nr_of_link_frequencies) {
|
|
dev_err(dev, "no link frequency %lld supported\n",
|
|
link_freq_menu_items[i]);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
v4l2_fwnode_endpoint_free(&bus_cfg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ov02a10_probe(struct i2c_client *client)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
struct ov02a10 *ov02a10;
|
|
unsigned int i;
|
|
unsigned int rotation;
|
|
int ret;
|
|
|
|
ov02a10 = devm_kzalloc(dev, sizeof(*ov02a10), GFP_KERNEL);
|
|
if (!ov02a10)
|
|
return -ENOMEM;
|
|
|
|
ret = ov02a10_check_hwcfg(dev, ov02a10);
|
|
if (ret)
|
|
return dev_err_probe(dev, ret,
|
|
"failed to check HW configuration\n");
|
|
|
|
v4l2_i2c_subdev_init(&ov02a10->subdev, client, &ov02a10_subdev_ops);
|
|
|
|
ov02a10->mipi_clock_voltage = OV02A10_MIPI_TX_SPEED_DEFAULT;
|
|
ov02a10->fmt.code = MEDIA_BUS_FMT_SBGGR10_1X10;
|
|
|
|
/* Optional indication of physical rotation of sensor */
|
|
rotation = 0;
|
|
device_property_read_u32(dev, "rotation", &rotation);
|
|
if (rotation == 180) {
|
|
ov02a10->upside_down = true;
|
|
ov02a10->fmt.code = MEDIA_BUS_FMT_SRGGB10_1X10;
|
|
}
|
|
|
|
ov02a10->eclk = devm_clk_get(dev, "eclk");
|
|
if (IS_ERR(ov02a10->eclk))
|
|
return dev_err_probe(dev, PTR_ERR(ov02a10->eclk),
|
|
"failed to get eclk\n");
|
|
|
|
ret = device_property_read_u32(dev, "clock-frequency",
|
|
&ov02a10->eclk_freq);
|
|
if (ret < 0)
|
|
return dev_err_probe(dev, ret,
|
|
"failed to get eclk frequency\n");
|
|
|
|
ret = clk_set_rate(ov02a10->eclk, ov02a10->eclk_freq);
|
|
if (ret < 0)
|
|
return dev_err_probe(dev, ret,
|
|
"failed to set eclk frequency (24MHz)\n");
|
|
|
|
if (clk_get_rate(ov02a10->eclk) != OV02A10_ECLK_FREQ)
|
|
dev_warn(dev, "eclk mismatched, mode is based on 24MHz\n");
|
|
|
|
ov02a10->pd_gpio = devm_gpiod_get(dev, "powerdown", GPIOD_OUT_HIGH);
|
|
if (IS_ERR(ov02a10->pd_gpio))
|
|
return dev_err_probe(dev, PTR_ERR(ov02a10->pd_gpio),
|
|
"failed to get powerdown-gpios\n");
|
|
|
|
ov02a10->rst_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
|
|
if (IS_ERR(ov02a10->rst_gpio))
|
|
return dev_err_probe(dev, PTR_ERR(ov02a10->rst_gpio),
|
|
"failed to get reset-gpios\n");
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ov02a10_supply_names); i++)
|
|
ov02a10->supplies[i].supply = ov02a10_supply_names[i];
|
|
|
|
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ov02a10_supply_names),
|
|
ov02a10->supplies);
|
|
if (ret)
|
|
return dev_err_probe(dev, ret, "failed to get regulators\n");
|
|
|
|
mutex_init(&ov02a10->mutex);
|
|
|
|
/* Set default mode */
|
|
ov02a10->cur_mode = &supported_modes[0];
|
|
|
|
ret = ov02a10_initialize_controls(ov02a10);
|
|
if (ret) {
|
|
dev_err_probe(dev, ret, "failed to initialize controls\n");
|
|
goto err_destroy_mutex;
|
|
}
|
|
|
|
/* Initialize subdev */
|
|
ov02a10->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
|
ov02a10->subdev.entity.ops = &ov02a10_subdev_entity_ops;
|
|
ov02a10->subdev.entity.function = MEDIA_ENT_F_CAM_SENSOR;
|
|
ov02a10->pad.flags = MEDIA_PAD_FL_SOURCE;
|
|
|
|
ret = media_entity_pads_init(&ov02a10->subdev.entity, 1, &ov02a10->pad);
|
|
if (ret < 0) {
|
|
dev_err_probe(dev, ret, "failed to initialize entity pads\n");
|
|
goto err_free_handler;
|
|
}
|
|
|
|
pm_runtime_enable(dev);
|
|
if (!pm_runtime_enabled(dev)) {
|
|
ret = ov02a10_power_on(dev);
|
|
if (ret < 0) {
|
|
dev_err_probe(dev, ret, "failed to power on\n");
|
|
goto err_clean_entity;
|
|
}
|
|
}
|
|
|
|
ret = v4l2_async_register_subdev(&ov02a10->subdev);
|
|
if (ret) {
|
|
dev_err_probe(dev, ret, "failed to register V4L2 subdev\n");
|
|
goto err_power_off;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_power_off:
|
|
if (pm_runtime_enabled(dev))
|
|
pm_runtime_disable(dev);
|
|
else
|
|
ov02a10_power_off(dev);
|
|
err_clean_entity:
|
|
media_entity_cleanup(&ov02a10->subdev.entity);
|
|
err_free_handler:
|
|
v4l2_ctrl_handler_free(ov02a10->subdev.ctrl_handler);
|
|
err_destroy_mutex:
|
|
mutex_destroy(&ov02a10->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ov02a10_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct ov02a10 *ov02a10 = to_ov02a10(sd);
|
|
|
|
v4l2_async_unregister_subdev(sd);
|
|
media_entity_cleanup(&sd->entity);
|
|
v4l2_ctrl_handler_free(sd->ctrl_handler);
|
|
pm_runtime_disable(&client->dev);
|
|
if (!pm_runtime_status_suspended(&client->dev))
|
|
ov02a10_power_off(&client->dev);
|
|
pm_runtime_set_suspended(&client->dev);
|
|
mutex_destroy(&ov02a10->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id ov02a10_of_match[] = {
|
|
{ .compatible = "ovti,ov02a10" },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, ov02a10_of_match);
|
|
|
|
static struct i2c_driver ov02a10_i2c_driver = {
|
|
.driver = {
|
|
.name = "ov02a10",
|
|
.pm = &ov02a10_pm_ops,
|
|
.of_match_table = ov02a10_of_match,
|
|
},
|
|
.probe_new = &ov02a10_probe,
|
|
.remove = &ov02a10_remove,
|
|
};
|
|
module_i2c_driver(ov02a10_i2c_driver);
|
|
|
|
MODULE_AUTHOR("Dongchun Zhu <dongchun.zhu@mediatek.com>");
|
|
MODULE_DESCRIPTION("OmniVision OV02A10 sensor driver");
|
|
MODULE_LICENSE("GPL v2");
|