Hello Pavel, On Mon, Aug 22, 2022 at 08:05:31PM +0200, Pavel Machek wrote: > Hi! > > I'd like to mainline support for gc2145 camera on pinephone. So far I > did trivial cleanups over the Megi's driver. I started with 5.15 > version from Mobian. I guess yaml description of the binding needs to > be provided, too? (Would someone have a good starting point here?) > > Any hints? Are there better starting points? Here's some reverse engineering work: https://xnux.eu/tablet-hacking/#017 that went into it, that may be helpful. kind regards, o. > Best regards, > Pavel > > diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig > index 6157e73eef24..ead851b93e64 100644 > --- a/drivers/media/i2c/Kconfig > +++ b/drivers/media/i2c/Kconfig > @@ -1390,6 +1390,15 @@ config VIDEO_S5C73M3 > This is a V4L2 sensor driver for Samsung S5C73M3 > 8 Mpixel camera. > > +config VIDEO_GC2145 > + tristate "GalaxyCore GC2145 sensor support" > + depends on I2C && VIDEO_V4L2 > + select VIDEO_V4L2_SUBDEV_API > + select V4L2_FWNODE > + help > + This is a V4L2 sensor-level driver for GalaxyCore GC2145 > + 2 Mpixel camera. > + > endmenu > > menu "Lens drivers" > diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile > index 83268f20aa3a..3916c2818522 100644 > --- a/drivers/media/i2c/Makefile > +++ b/drivers/media/i2c/Makefile > @@ -133,4 +133,5 @@ obj-$(CONFIG_VIDEO_MAX9271_LIB) += max9271.o > obj-$(CONFIG_VIDEO_RDACM20) += rdacm20.o > obj-$(CONFIG_VIDEO_RDACM21) += rdacm21.o > obj-$(CONFIG_VIDEO_ST_MIPID02) += st-mipid02.o > +obj-$(CONFIG_VIDEO_GC2145) += gc2145.o > obj-$(CONFIG_SDR_MAX2175) += max2175.o > diff --git a/drivers/media/i2c/gc2145.c b/drivers/media/i2c/gc2145.c > new file mode 100644 > index 000000000000..b110bb42da37 > --- /dev/null > +++ b/drivers/media/i2c/gc2145.c > @@ -0,0 +1,1821 @@ > +/* > + * Galaxycore GC2145 driver. > + * Copyright (C) 2018 Ondřej Jirman <megi@xxxxxx>. > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License as published by > + * the Free Software Foundation; either version 2 of the License, or > + * (at your option) any later version. > + */ > + > +#define DEBUG > + > +#include <asm/div64.h> > +#include <linux/clk.h> > +#include <linux/clk-provider.h> > +#include <linux/clkdev.h> > +#include <linux/ctype.h> > +#include <linux/delay.h> > +#include <linux/device.h> > +#include <linux/firmware.h> > +#include <linux/i2c.h> > +#include <linux/init.h> > +#include <linux/module.h> > +#include <linux/of_device.h> > +#include <linux/slab.h> > +#include <linux/types.h> > +#include <linux/gpio/consumer.h> > +#include <linux/regulator/consumer.h> > +#include <media/v4l2-async.h> > +#include <media/v4l2-ctrls.h> > +#include <media/v4l2-device.h> > +#include <media/v4l2-fwnode.h> > +#include <media/v4l2-subdev.h> > + > +/* > + * GC2145 > + * - 2M pixel > + * - 1600 x 1200, max frame rate: 720P, 30fps@96MHz > + * - Bayer RGB, RGB565, YCbCr 4:2:2 > + * - AE, AWB > + * - PLL > + * - AVDD 2.7-3V, DVDD 1.7-1.9V, IOVDD 1.7-3V > + * - Power 180mW / 200uA standby > + * - Interpolation, denoise, gamma, edge enhance > + * I2C: > + * - write reg8 > + * - read reg8 > + * - write reg8 multi > + * > + * Power on: > + * MCLK on > + * PWDN, RESET low > + * IOVDD, AVDD, DVDD on in sequence > + * RESET high > + * > + * Power off: > + * PWDN, RESET low > + * RESET high > + * delay > + * PWDN high > + * RESET low > + * IOVDD, AVDD, DVDD off > + * PWDN low? > + * MCLK off > + * > + * Init: > + * - check chip id > + * - setup pll > + * - setup CSI interface / PAD drive strength > + * - setup resolution/fps > + * - enable postprocessing > + * (ISP related chapter) > + * > + * Stream on: > + * - ??? > + */ > + > +#define GC2145_FIRMWARE_PARAMETERS "gc2145-init.bin" > + > +#define GC2145_SENSOR_WIDTH_MIN 88u > +#define GC2145_SENSOR_HEIGHT_MIN 72u > + > +/* 1616x1232 8H/16V dummy pixels on each side */ > +#define GC2145_SENSOR_WIDTH_MAX 1600u > +#define GC2145_SENSOR_HEIGHT_MAX 1200u > + > +/* {{{ Register definitions */ > + > +/* system registers */ > +#define GC2145_REG_CHIP_ID 0xf0 > +#define GC2145_REG_CHIP_ID_VALUE 0x2145 > + > +#define GC2145_REG_PAD_IO 0xf2 > +#define GC2145_REG_PLL_MODE1 0xf7 > +#define GC2145_REG_PLL_MODE2 0xf8 > +#define GC2145_REG_CM_MODE 0xf9 > +#define GC2145_REG_CLK_DIV_MODE 0xfa > +#define GC2145_REG_ANALOG_PWC 0xfc > +#define GC2145_REG_SCALER_MODE 0xfd > +#define GC2145_REG_RESET 0xfe > + > +#define GC2145_P0_EXPOSURE_HI 0x03 > +#define GC2145_P0_EXPOSURE_LO 0x04 > +#define GC2145_P0_HBLANK_DELAY_HI 0x05 > +#define GC2145_P0_HBLANK_DELAY_LO 0x06 > +#define GC2145_P0_VBLANK_DELAY_HI 0x07 > +#define GC2145_P0_VBLANK_DELAY_LO 0x08 > +#define GC2145_P0_ROW_START_HI 0x09 > +#define GC2145_P0_ROW_START_LO 0x0a > +#define GC2145_P0_COL_START_HI 0x0b > +#define GC2145_P0_COL_START_LO 0x0c > +#define GC2145_P0_WIN_HEIGHT_HI 0x0d > +#define GC2145_P0_WIN_HEIGHT_LO 0x0e > +#define GC2145_P0_WIN_WIDTH_HI 0x0f > +#define GC2145_P0_WIN_WIDTH_LO 0x10 > +#define GC2145_P0_SH_DELAY_HI 0x11 > +#define GC2145_P0_SH_DELAY_LO 0x12 > +#define GC2145_P0_START_TIME 0x13 > +#define GC2145_P0_END_TIME 0x14 > + > +#define GC2145_P0_ISP_BLK_ENABLE1 0x80 > +#define GC2145_P0_ISP_BLK_ENABLE2 0x81 > +#define GC2145_P0_ISP_BLK_ENABLE3 0x82 > +#define GC2145_P0_ISP_SPECIAL_EFFECT 0x83 > +#define GC2145_P0_ISP_OUT_FORMAT 0x84 > +#define GC2145_P0_FRAME_START 0x85 > +#define GC2145_P0_SYNC_MODE 0x86 > +#define GC2145_P0_ISP_BLK_ENABLE4 0x87 > +#define GC2145_P0_ISP_MODULE_GATING 0x88 > +#define GC2145_P0_ISP_BYPASS_MODE 0x89 > +#define GC2145_P0_DEBUG_MODE2 0x8c > +#define GC2145_P0_DEBUG_MODE3 0x8d > + > +#define GC2145_P0_CROP_ENABLE 0x90 > +#define GC2145_P0_CROP_Y1_HI 0x91 > +#define GC2145_P0_CROP_Y1_LO 0x92 > +#define GC2145_P0_CROP_X1_HI 0x93 > +#define GC2145_P0_CROP_X1_LO 0x94 > +#define GC2145_P0_CROP_WIN_HEIGHT_HI 0x95 > +#define GC2145_P0_CROP_WIN_HEIGHT_LO 0x96 > +#define GC2145_P0_CROP_WIN_WIDTH_HI 0x97 > +#define GC2145_P0_CROP_WIN_WIDTH_LO 0x98 > + > +#define GC2145_P0_SUBSAMPLE_RATIO 0x99 > +#define GC2145_P0_SUBSAMPLE_MODE 0x9a > +#define GC2145_P0_SUB_ROW_N1 0x9b > +#define GC2145_P0_SUB_ROW_N2 0x9c > +#define GC2145_P0_SUB_ROW_N3 0x9d > +#define GC2145_P0_SUB_ROW_N4 0x9e > +#define GC2145_P0_SUB_COL_N1 0x9f > +#define GC2145_P0_SUB_COL_N2 0xa0 > +#define GC2145_P0_SUB_COL_N3 0xa1 > +#define GC2145_P0_SUB_COL_N4 0xa2 > +#define GC2145_P0_OUT_BUF_ENABLE 0xc2 > + > +/* }}} */ > + > +struct gc2145_pixfmt { > + u32 code; > + u32 colorspace; > + u8 fmt_setup; > +}; > + > +static const struct gc2145_pixfmt gc2145_formats[] = { > + { > + .code = MEDIA_BUS_FMT_UYVY8_2X8, > + .colorspace = V4L2_COLORSPACE_SRGB, > + .fmt_setup = 0x00, > + }, > + { > + .code = MEDIA_BUS_FMT_VYUY8_2X8, > + .colorspace = V4L2_COLORSPACE_SRGB, > + .fmt_setup = 0x01, > + }, > + { > + .code = MEDIA_BUS_FMT_YUYV8_2X8, > + .colorspace = V4L2_COLORSPACE_SRGB, > + .fmt_setup = 0x02, > + }, > + { > + .code = MEDIA_BUS_FMT_YVYU8_2X8, > + .colorspace = V4L2_COLORSPACE_SRGB, > + .fmt_setup = 0x03, > + }, > + { > + .code = MEDIA_BUS_FMT_RGB565_2X8_LE, > + .colorspace = V4L2_COLORSPACE_SRGB, > + .fmt_setup = 0x06, > + }, > + { > + .code = MEDIA_BUS_FMT_SBGGR8_1X8, > + .colorspace = V4L2_COLORSPACE_RAW, > + .fmt_setup = 0x17, > + }, > +}; > + > +static const struct gc2145_pixfmt *gc2145_find_format(u32 code) > +{ > + int i; > + > + for (i = 0; i < ARRAY_SIZE(gc2145_formats); i++) > + if (gc2145_formats[i].code == code) > + return &gc2145_formats[i]; > + > + return NULL; > +} > + > +/* regulator supplies */ > +static const char * const gc2145_supply_name[] = { > + "IOVDD", /* Digital I/O (1.7-3V) suppply */ > + "AVDD", /* Analog (2.7-3V) supply */ > + "DVDD", /* Digital Core (1.7-1.9V) supply */ > +}; > + > +#define GC2145_NUM_SUPPLIES ARRAY_SIZE(gc2145_supply_name) > + > +struct gc2145_ctrls { > + struct v4l2_ctrl_handler handler; > + struct { > + struct v4l2_ctrl *auto_exposure; > + struct v4l2_ctrl *exposure; > + struct v4l2_ctrl *d_gain; > + struct v4l2_ctrl *a_gain; > + }; > + struct v4l2_ctrl *metering; > + struct v4l2_ctrl *exposure_bias; > + struct { > + struct v4l2_ctrl *wb; > + struct v4l2_ctrl *blue_balance; > + struct v4l2_ctrl *red_balance; > + }; > + struct v4l2_ctrl *aaa_lock; > + struct v4l2_ctrl *hflip; > + struct v4l2_ctrl *vflip; > + struct v4l2_ctrl *pl_freq; > + struct v4l2_ctrl *colorfx; > + struct v4l2_ctrl *brightness; > + struct v4l2_ctrl *saturation; > + struct v4l2_ctrl *contrast; > + struct v4l2_ctrl *gamma; > + struct v4l2_ctrl *test_pattern; > + struct v4l2_ctrl *test_data[4]; > +}; > + > +enum { > + TX_WRITE = 1, > + TX_WRITE16, > + TX_UPDATE_BITS, > +}; > + > +#define GC2145_MAX_OPS 64 > + > +struct gc2145_tx_op { > + int op; > + u16 reg; > + u16 val; > + u16 mask; > +}; > + > +struct gc2145_dev { > + struct i2c_client *i2c_client; > + struct v4l2_subdev sd; > + struct media_pad pad; > + struct v4l2_fwnode_endpoint ep; /* the parsed DT endpoint info */ > + struct clk *xclk; /* external clock for GC2145 */ > + > + struct regulator_bulk_data supplies[GC2145_NUM_SUPPLIES]; > + struct gpio_desc *reset_gpio; /* nrst pin */ > + struct gpio_desc *enable_gpio; /* ce pin */ > + > + /* lock to protect all members below */ > + struct mutex lock; > + > + struct v4l2_mbus_framefmt fmt; > + struct v4l2_fract frame_interval; > + struct gc2145_ctrls ctrls; > + > + bool pending_mode_change; > + bool powered; > + bool streaming; > + > + u8 current_bank; > + > + struct gc2145_tx_op ops[GC2145_MAX_OPS]; > + int n_ops; > + int tx_started; > +}; > + > +static inline struct gc2145_dev *to_gc2145_dev(struct v4l2_subdev *sd) > +{ > + return container_of(sd, struct gc2145_dev, sd); > +} > + > +/* {{{ Register access helpers */ > + > +static int gc2145_write_regs(struct gc2145_dev *sensor, u8 addr, > + u8 *data, int data_size) > +{ > + struct i2c_client *client = sensor->i2c_client; > + struct i2c_msg msg; > + u8 buf[128 + 1]; > + int ret; > + > + if (data_size > sizeof(buf) - 1) { > + v4l2_err(&sensor->sd, "%s: oversized transfer (size=%d)\n", > + __func__, data_size); > + return -EINVAL; > + } > + > + buf[0] = addr; > + memcpy(buf + 1, data, data_size); > + > + msg.addr = client->addr; > + msg.flags = client->flags; > + msg.buf = buf; > + msg.len = data_size + 1; > + > + dev_dbg(&sensor->i2c_client->dev, "[wr %02x] <= %*ph\n", > + (u32)addr, data_size, data); > + > + ret = i2c_transfer(client->adapter, &msg, 1); > + if (ret < 0) { > + v4l2_err(&sensor->sd, > + "%s: error %d: addr=%x, data=%*ph\n", > + __func__, ret, (u32)addr, data_size, data); > + return ret; > + } > + > + return 0; > +} > + > +static int gc2145_read_regs(struct gc2145_dev *sensor, u8 addr, > + u8 *data, int data_size) > +{ > + struct i2c_client *client = sensor->i2c_client; > + struct i2c_msg msg[2]; > + int ret; > + > + msg[0].addr = client->addr; > + msg[0].flags = client->flags; > + msg[0].buf = &addr; > + msg[0].len = 1; > + > + msg[1].addr = client->addr; > + msg[1].flags = client->flags | I2C_M_RD; > + msg[1].buf = data; > + msg[1].len = data_size; > + > + ret = i2c_transfer(client->adapter, msg, 2); > + if (ret < 0) { > + v4l2_err(&sensor->sd, > + "%s: error %d: start_index=%x, data_size=%d\n", > + __func__, ret, (u32)addr, data_size); > + return ret; > + } > + > + dev_dbg(&sensor->i2c_client->dev, "[rd %02x] => %*ph\n", > + (u32)addr, data_size, data); > + > + return 0; > +} > + > +static int gc2145_switch_bank(struct gc2145_dev *sensor, u16 reg) > +{ > + int ret; > + u8 bank = reg >> 8; > + > + if (bank & ~3u) > + return -ERANGE; > + > + if (sensor->current_bank != bank) { > + ret = gc2145_write_regs(sensor, GC2145_REG_RESET, &bank, 1); > + if (ret) > + return ret; > + > + sensor->current_bank = bank; > + dev_info(&sensor->i2c_client->dev, "bank switch: 0x%02x\n", > + (unsigned int)sensor->current_bank); > + } > + > + return 0; > +} > + > +static int gc2145_read(struct gc2145_dev *sensor, u16 reg, u8 *val) > +{ > + int ret; > + > + ret = gc2145_switch_bank(sensor, reg); > + if (ret) > + return ret; > + > + return gc2145_read_regs(sensor, reg, val, 1); > +} > + > +static int gc2145_write(struct gc2145_dev *sensor, u16 reg, u8 val) > +{ > + int ret; > + > + ret = gc2145_switch_bank(sensor, reg); > + if (ret) > + return ret; > + > + if ((reg & 0xffu) == GC2145_REG_RESET) > + sensor->current_bank = val & 3; > + > + return gc2145_write_regs(sensor, reg, &val, 1); > +} > + > +static int gc2145_update_bits(struct gc2145_dev *sensor, u16 reg, u8 mask, u8 val) > +{ > + int ret; > + u8 tmp; > + > + ret = gc2145_read(sensor, reg, &tmp); > + if (ret) > + return ret; > + > + tmp &= ~mask; > + tmp |= val & mask; > + > + return gc2145_write(sensor, reg, tmp); > +} > + > +static int gc2145_read16(struct gc2145_dev *sensor, u16 reg, u16 *val) > +{ > + int ret; > + > + ret = gc2145_switch_bank(sensor, reg); > + if (ret) > + return ret; > + > + ret = gc2145_read_regs(sensor, reg, (u8 *)val, sizeof(*val)); > + if (ret) > + return ret; > + > + *val = be16_to_cpu(*val); > + return 0; > +} > + > +static int gc2145_write16(struct gc2145_dev *sensor, u16 reg, u16 val) > +{ > + u16 tmp = cpu_to_be16(val); > + int ret; > + > + ret = gc2145_switch_bank(sensor, reg); > + if (ret) > + return ret; > + > + return gc2145_write_regs(sensor, reg, (u8 *)&tmp, sizeof(tmp)); > +} > + > +static void gc2145_tx_start(struct gc2145_dev *sensor) > +{ > + if (sensor->tx_started++) > + dev_err(&sensor->i2c_client->dev, > + "tx_start called multiple times\n"); > + > + sensor->n_ops = 0; > +} > + > +static void gc2145_tx_add(struct gc2145_dev *sensor, int kind, > + u16 reg, u16 val, u16 mask) > +{ > + struct gc2145_tx_op *op; > + > + if (!sensor->tx_started) { > + dev_err(&sensor->i2c_client->dev, > + "op added without calling tx_start\n"); > + return; > + } > + > + if (sensor->n_ops >= ARRAY_SIZE(sensor->ops)) { > + dev_err(&sensor->i2c_client->dev, > + "ops overflow, increase GC2145_MAX_OPS\n"); > + return; > + } > + > + op = &sensor->ops[sensor->n_ops++]; > + op->op = kind; > + op->reg = reg; > + op->val = val; > + op->mask = mask; > +} > + > +static void gc2145_tx_write8(struct gc2145_dev *sensor, u16 reg, u8 val) > +{ > + return gc2145_tx_add(sensor, TX_WRITE, reg, val, 0); > +} > + > +static void gc2145_tx_write16(struct gc2145_dev *sensor, u16 reg, u16 val) > +{ > + return gc2145_tx_add(sensor, TX_WRITE16, reg, val, 0); > +} > + > +static void gc2145_tx_update_bits(struct gc2145_dev *sensor, u16 reg, > + u8 mask, u8 val) > +{ > + return gc2145_tx_add(sensor, TX_UPDATE_BITS, reg, val, mask); > +} > + > +static int gc2145_tx_commit(struct gc2145_dev *sensor) > +{ > + struct gc2145_tx_op* op; > + int i, ret, n_ops; > + > + if (!sensor->tx_started) { > + dev_err(&sensor->i2c_client->dev, > + "tx_commit called without tx_start\n"); > + return 0; > + } > + > + n_ops = sensor->n_ops; > + sensor->tx_started = 0; > + sensor->n_ops = 0; > + > + for (i = 0; i < n_ops; i++) { > + op = &sensor->ops[i]; > + > + switch (op->op) { > + case TX_WRITE: > + ret = gc2145_write(sensor, op->reg, op->val); > + break; > + case TX_WRITE16: > + ret = gc2145_write16(sensor, op->reg, op->val); > + break; > + case TX_UPDATE_BITS: > + ret = gc2145_update_bits(sensor, op->reg, op->mask, op->val); > + break; > + default: > + dev_err(&sensor->i2c_client->dev, "invalid op at %d\n", i); > + ret = -EINVAL; > + } > + > + if (ret) > + return ret; > + } > + > + return 0; > +} > + > +/* > + * Efficiently write to a set of registers, using auto-increment > + * when possible. User must not use address 0xff. To switch banks, > + * use sequence: 0xfe, bank_no. > + */ > +static int gc2145_set_registers(struct gc2145_dev *sensor, > + const uint8_t* data, size_t data_len) > +{ > + int ret = 0, i = 0; > + u16 start, len; > + u8 buf[128]; > + > + if (data_len % 2 != 0) { > + v4l2_err(&sensor->sd, "Register map has invalid size\n"); > + return -EINVAL; > + } > + > + /* we speed up communication by using auto-increment functionality */ > + while (i < data_len) { > + start = data[i]; > + len = 0; > + > + while (i < data_len && data[i] == (start + len) && > + len < sizeof(buf)) { > + buf[len++] = data[i + 1]; > + i += 2; > + } > + > + ret = gc2145_write_regs(sensor, start, buf, len); > + if (ret) > + return ret; > + } > + > + sensor->current_bank = 0xff; > + return 0; > +} > + > +/* > + * The firmware format: > + * <record 0>, ..., <record N - 1> > + * "record" is a 1-byte register address followed by 1-byte data > + */ > +static int gc2145_load_firmware(struct gc2145_dev *sensor, const char *name) > +{ > + const struct firmware *fw; > + int ret; > + > + ret = request_firmware(&fw, name, sensor->sd.v4l2_dev->dev); > + if (ret) { > + v4l2_warn(&sensor->sd, > + "Failed to read firmware %s, continuing anyway...\n", > + name); > + return 1; > + } > + > + if (fw->size == 0) > + return 1; > + > + ret = gc2145_set_registers(sensor, fw->data, fw->size); > + > + release_firmware(fw); > + return ret; > +} > + > +/* }}} */ > +/* {{{ Controls */ > + > +static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl) > +{ > + return &container_of(ctrl->handler, struct gc2145_dev, > + ctrls.handler)->sd; > +} > + > +/* Exposure */ > + > +static int gc2145_get_exposure(struct gc2145_dev *sensor) > +{ > + struct gc2145_ctrls *ctrls = &sensor->ctrls; > + u8 again, dgain; > + u16 exp; > + int ret; > + > + ret = gc2145_read(sensor, 0xb1, &again); > + if (ret) > + return ret; > + > + ret = gc2145_read(sensor, 0xb2, &dgain); > + if (ret) > + return ret; > + > + ret = gc2145_read16(sensor, 0x03, &exp); > + if (ret) > + return ret; > + > + ctrls->exposure->val = exp; > + ctrls->d_gain->val = dgain; > + ctrls->a_gain->val = again; > + > + return 0; > +} > + > +#define AE_BIAS_MENU_DEFAULT_VALUE_INDEX 4 > +static const s64 ae_bias_menu_values[] = { > + -4000, -3000, -2000, -1000, 0, 1000, 2000, 3000, 4000 > +}; > + > +static const s8 ae_bias_menu_reg_values[] = { > + 0x55, 0x60, 0x65, 0x70, 0x7b, 0x85, 0x90, 0x95, 0xa0 > +}; > + > +static int gc2145_set_exposure(struct gc2145_dev *sensor) > +{ > + struct gc2145_ctrls *ctrls = &sensor->ctrls; > + bool is_auto = (ctrls->auto_exposure->val != V4L2_EXPOSURE_MANUAL); > + > + gc2145_tx_start(sensor); > + > + if (ctrls->auto_exposure->is_new) { > + gc2145_tx_write8(sensor, 0xb6, is_auto ? 1 : 0); > + } > + > + if (!is_auto && ctrls->exposure->is_new) > + gc2145_tx_write16(sensor, 0x03, ctrls->exposure->val); > + > + if (!is_auto && ctrls->d_gain->is_new) > + gc2145_tx_write8(sensor, 0xb2, ctrls->d_gain->val); > + > + if (!is_auto && ctrls->a_gain->is_new) > + gc2145_tx_write8(sensor, 0xb1, ctrls->a_gain->val); > + > + return gc2145_tx_commit(sensor);; > +} > + > +/* Test patterns */ > + > +enum { > + GC2145_TEST_PATTERN_DISABLED, > + GC2145_TEST_PATTERN_VGA_COLOR_BARS, > + GC2145_TEST_PATTERN_UXGA_COLOR_BARS, > + GC2145_TEST_PATTERN_SKIN_MAP, > + GC2145_TEST_PATTERN_SOLID_COLOR, > +}; > + > +static const char * const test_pattern_menu[] = { > + "Disabled", > + "VGA color bars", > + "UXGA color bars", > + "Skin map", > + "Solid black color", > + "Solid light gray color", > + "Solid gray color", > + "Solid dark gray color", > + "Solid white color", > + "Solid red color", > + "Solid green color", > + "Solid blue color", > + "Solid yellow color", > + "Solid cyan color", > + "Solid magenta color", > +}; > + > +static int gc2145_g_volatile_ctrl(struct v4l2_ctrl *ctrl) > +{ > + struct v4l2_subdev *sd = ctrl_to_sd(ctrl); > + struct gc2145_dev *sensor = to_gc2145_dev(sd); > + int ret; > + > + /* v4l2_ctrl_lock() locks our own mutex */ > + > + if (!sensor->powered) > + return -EIO; > + > + switch (ctrl->id) { > + case V4L2_CID_EXPOSURE_AUTO: > + ret = gc2145_get_exposure(sensor); > + if (ret) > + return ret; > + break; > + default: > + dev_err(&sensor->i2c_client->dev, "getting unknown control %d\n", ctrl->id); > + return -EINVAL; > + } > + > + return 0; > +} > + > +static int gc2145_s_ctrl(struct v4l2_ctrl *ctrl) > +{ > + struct v4l2_subdev *sd = ctrl_to_sd(ctrl); > + struct gc2145_dev *sensor = to_gc2145_dev(sd); > + struct gc2145_ctrls *ctrls = &sensor->ctrls; > + s32 val = ctrl->val; > + unsigned int i; > + int ret; > + u8 test1, test2; > + > + /* v4l2_ctrl_lock() locks our own mutex */ > + > + /* > + * If the device is not powered up by the host driver do > + * not apply any controls to H/W at this time. Instead > + * the controls will be restored right after power-up. > + */ > + if (!sensor->powered) > + return 0; > + > + switch (ctrl->id) { > + case V4L2_CID_EXPOSURE_AUTO: > + return gc2145_set_exposure(sensor); > + > + case V4L2_CID_AUTO_EXPOSURE_BIAS: > + if (val < 0 || val >= ARRAY_SIZE(ae_bias_menu_reg_values)) { > + dev_err(&sensor->i2c_client->dev, "ae bias out of range\n"); > + return -EINVAL; > + } > + > + return gc2145_write(sensor, 0x113, > + (u8)ae_bias_menu_reg_values[val]); > + > + case V4L2_CID_VFLIP: > + return gc2145_update_bits(sensor, 0x17, BIT(1), val ? BIT(1) : 0); > + > + case V4L2_CID_HFLIP: > + return gc2145_update_bits(sensor, 0x17, BIT(0), val ? BIT(0) : 0); > + > + case V4L2_CID_TEST_PATTERN: > + for (i = 0; i < ARRAY_SIZE(ctrls->test_data); i++) > + v4l2_ctrl_activate(ctrls->test_data[i], > + val == 6); /* solid color */ > + > + test1 = 0; > + test2 = 0x01; > + > + if (val == GC2145_TEST_PATTERN_VGA_COLOR_BARS) > + test1 = 0x04; > + else if (val == GC2145_TEST_PATTERN_UXGA_COLOR_BARS) > + test1 = 0x44; > + else if (val == GC2145_TEST_PATTERN_SKIN_MAP) > + test1 = 0x10; > + else if (val >= GC2145_TEST_PATTERN_SOLID_COLOR) { > + test1 = 0x04; > + test2 = ((val - GC2145_TEST_PATTERN_SOLID_COLOR) << 4) | 0x8; > + } else if (val != GC2145_TEST_PATTERN_DISABLED) { > + dev_err(&sensor->i2c_client->dev, "test pattern out of range\n"); > + return -EINVAL; > + } > + > + ret = gc2145_write(sensor, 0x8c, test1); > + if (ret) > + return ret; > + > + return gc2145_write(sensor, 0x8d, test2); > + > + default: > + dev_err(&sensor->i2c_client->dev, "setting unknown control %d\n", ctrl->id); > + return -EINVAL; > + } > +} > + > +static const struct v4l2_ctrl_ops gc2145_ctrl_ops = { > + .g_volatile_ctrl = gc2145_g_volatile_ctrl, > + .s_ctrl = gc2145_s_ctrl, > +}; > + > +static int gc2145_init_controls(struct gc2145_dev *sensor) > +{ > + const struct v4l2_ctrl_ops *ops = &gc2145_ctrl_ops; > + struct gc2145_ctrls *ctrls = &sensor->ctrls; > + struct v4l2_ctrl_handler *hdl = &ctrls->handler; > + int ret; > + > + v4l2_ctrl_handler_init(hdl, 32); > + > + /* we can use our own mutex for the ctrl lock */ > + hdl->lock = &sensor->lock; > + > + /* Exposure controls */ > + ctrls->auto_exposure = v4l2_ctrl_new_std_menu(hdl, ops, > + V4L2_CID_EXPOSURE_AUTO, > + V4L2_EXPOSURE_MANUAL, 0, > + V4L2_EXPOSURE_AUTO); > + ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE, > + 1, 0x1fff, 1, 0x80); > + ctrls->a_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN, > + 0, 255, 1, 0x20); > + ctrls->d_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_DIGITAL_GAIN, > + 0, 255, 1, 0x40); > + ctrls->exposure_bias = > + v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_AUTO_EXPOSURE_BIAS, > + ARRAY_SIZE(ae_bias_menu_values) - 1, > + AE_BIAS_MENU_DEFAULT_VALUE_INDEX, > + ae_bias_menu_values); > + > + /* V/H flips */ > + ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, > + V4L2_CID_HFLIP, 0, 1, 1, 0); > + ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, > + V4L2_CID_VFLIP, 0, 1, 1, 0); > + > + > + /* Test patterns */ > + ctrls->test_pattern = > + v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN, > + ARRAY_SIZE(test_pattern_menu) - 1, > + 0, 0, test_pattern_menu); > + > + v4l2_ctrl_auto_cluster(4, &ctrls->auto_exposure, V4L2_EXPOSURE_MANUAL, > + true); > + > + if (hdl->error) { > + ret = hdl->error; > + goto free_ctrls; > + } > + > + sensor->sd.ctrl_handler = hdl; > + return 0; > + > +free_ctrls: > + v4l2_ctrl_handler_free(hdl); > + return ret; > +} > + > +/* }}} */ > +/* {{{ Video ops */ > + > +static int gc2145_g_frame_interval(struct v4l2_subdev *sd, > + struct v4l2_subdev_frame_interval *fi) > +{ > + struct gc2145_dev *sensor = to_gc2145_dev(sd); > + > + if (fi->pad != 0) > + return -EINVAL; > + > + mutex_lock(&sensor->lock); > + fi->interval = sensor->frame_interval; > + mutex_unlock(&sensor->lock); > + > + return 0; > +} > + > +static int gc2145_s_frame_interval(struct v4l2_subdev *sd, > + struct v4l2_subdev_frame_interval *fi) > +{ > + struct gc2145_dev *sensor = to_gc2145_dev(sd); > + int ret = 0, fps; > + > + if (fi->pad != 0) > + return -EINVAL; > + > + mutex_lock(&sensor->lock); > + > + /* user requested infinite frame rate */ > + if (fi->interval.numerator == 0) > + fps = 60; > + else > + fps = DIV_ROUND_CLOSEST(fi->interval.denominator, > + fi->interval.numerator); > + > + fps = clamp(fps, 1, 60); > + > + sensor->frame_interval.numerator = 1; > + sensor->frame_interval.denominator = fps; > + fi->interval = sensor->frame_interval; > + > + mutex_unlock(&sensor->lock); > + return ret; > +} > + > +static int gc2145_set_2pclk(struct gc2145_dev *sensor, > + unsigned long *freq, bool apply) > +{ > + unsigned long pll_mult, pll_mult_max, pclk_div, pclk2, > + mclk; > + unsigned long pll_mult_best = 0, pclk_div_best = 0, diff_best = ULONG_MAX, diff, > + pclk2_best = 0; > + int mclk_div2_en; > + int mclk_div2_en_best = 0; > + > + mclk = clk_get_rate(sensor->xclk); > + if (mclk == 0) > + return -EINVAL; > + > + for (mclk_div2_en = 0; mclk_div2_en <= 1; mclk_div2_en++) { > + pll_mult_max = 768000000 / 4 / (mclk / (mclk_div2_en ? 2 : 1)); > + if (pll_mult_max > 32) > + pll_mult_max = 32; > + > + for (pll_mult = 2; pll_mult <= pll_mult_max; pll_mult++) { > + for (pclk_div = 1; pclk_div <= 8; pclk_div++) { > + pclk2 = mclk / (mclk_div2_en ? 2 : 1) * pll_mult / pclk_div; > + > + if (pclk2 > *freq) > + continue; > + > + diff = *freq - pclk2; > + > + if (diff < diff_best) { > + diff_best = diff; > + pclk2_best = pclk2; > + > + pll_mult_best = pll_mult; > + pclk_div_best = pclk_div; > + mclk_div2_en_best = mclk_div2_en; > + } > + > + if (diff == 0) > + goto found; > + } > + } > + } > + > + if (diff_best == ULONG_MAX) > + return -1; > + > +found: > + *freq = pclk2_best; > + if (!apply) > + return 0; > + > + gc2145_tx_start(sensor); > + > + gc2145_tx_write8(sensor, 0xf7, > + ((pclk_div_best - 1)) << 4 | > + (mclk_div2_en_best << 1) | BIT(0) /* pll_en */); > + gc2145_tx_write8(sensor, 0xf8, BIT(7) | (pll_mult_best - 1)); > + gc2145_tx_write8(sensor, 0xfa, > + (pclk_div_best - 1) << 4 | > + (((pclk_div_best - 1) / 2) & 0xf)); > + > + return gc2145_tx_commit(sensor); > +} > + > +static int gc2145_setup_awb(struct gc2145_dev *sensor, > + u16 x1, u16 y1, u16 x2, u16 y2) > +{ > + int ratio = 8; > + > + gc2145_tx_start(sensor); > + > + /* disable awb */ > + gc2145_tx_update_bits(sensor, 0x82, BIT(1), 0); > + > + /* reset white balance RGB gains */ > + gc2145_tx_write8(sensor, 0xb3, 0x40); > + gc2145_tx_write8(sensor, 0xb4, 0x40); > + gc2145_tx_write8(sensor, 0xb5, 0x40); > + > + /* awb window */ > + gc2145_tx_write8(sensor, 0x1ec, x1 / ratio); > + gc2145_tx_write8(sensor, 0x1ed, y1 / ratio); > + gc2145_tx_write8(sensor, 0x1ee, x2 / ratio); > + gc2145_tx_write8(sensor, 0x1ef, y2 / ratio); > + > + /* eanble awb */ > + gc2145_tx_update_bits(sensor, 0x82, BIT(1), BIT(1)); > + > + return gc2145_tx_commit(sensor); > +} > + > +static int gc2145_setup_aec(struct gc2145_dev *sensor, > + u16 x1, u16 y1, u16 x2, u16 y2, > + u16 cx1, u16 cy1, u16 cx2, u16 cy2) > +{ > + u16 x_ratio = 8; > + > + gc2145_tx_start(sensor); > + > + /* disable AEC */ > + gc2145_tx_write8(sensor, 0xb6, 0); > + > + /* set reasonable initial exposure and gains */ > + gc2145_tx_write16(sensor, 0x03, 1200); > + gc2145_tx_write8(sensor, 0xb1, 0x20); > + gc2145_tx_write8(sensor, 0xb2, 0xe0); > + > + /* setup measure window */ > + gc2145_tx_write8(sensor, 0x101, x1 / x_ratio); > + gc2145_tx_write8(sensor, 0x102, x2 / x_ratio); > + gc2145_tx_write8(sensor, 0x103, y1 / 8); > + gc2145_tx_write8(sensor, 0x104, y2 / 8); > + > + /* setup center */ > + gc2145_tx_write8(sensor, 0x105, cx1 / x_ratio); > + gc2145_tx_write8(sensor, 0x106, cx2 / x_ratio); > + gc2145_tx_write8(sensor, 0x107, cy1 / 8); > + gc2145_tx_write8(sensor, 0x108, cy2 / 8); > + > + /* enable AEC again */ > + gc2145_tx_write8(sensor, 0xb6, 1); > + > + return gc2145_tx_commit(sensor); > +} > + > +struct gc2145_sensor_params { > + unsigned int enable_scaler; > + unsigned int col_scaler_only; > + unsigned int row_skip; > + unsigned int col_skip; > + unsigned long sh_delay; > + unsigned long hb; > + unsigned long vb; > + unsigned long st; > + unsigned long et; > + unsigned long win_width; > + unsigned long win_height; > + unsigned long width; > + unsigned long height; > +}; > + > +static void gc2145_sensor_params_init(struct gc2145_sensor_params* p, int width, int height) > +{ > + p->win_height = height + 32; > + p->win_width = (width + 16); > + p->width = width; > + p->height = height; > + p->st = 2; > + p->et = 2; > + p->vb = 8; > + p->hb = 0x1f0; > + p->sh_delay = 30; > +} > + > +/* unit is PCLK periods */ > +static unsigned long > +gc2145_sensor_params_get_row_period(struct gc2145_sensor_params* p) > +{ > + return 2 * (p->win_width / 2 / (p->col_skip + 1) + p->sh_delay + p->hb + 4); > +} > + > +static unsigned long > +gc2145_sensor_params_get_frame_period(struct gc2145_sensor_params* p) > +{ > + unsigned long rt = gc2145_sensor_params_get_row_period(p); > + > + return rt * (p->vb + p->win_height) / (p->row_skip + 1); > +} > + > +static void > +gc2145_sensor_params_fit_hb_to_power_line_period(struct gc2145_sensor_params* p, > + unsigned long power_line_freq, > + unsigned long pclk) > +{ > + unsigned long rt, power_line_ratio; > + > + for (p->hb = 0x1f0; p->hb < 2047; p->hb++) { > + rt = gc2145_sensor_params_get_row_period(p); > + > + /* power_line_ratio is row_freq / power_line_freq * 1000 */ > + power_line_ratio = pclk / power_line_freq * 1000 / rt; > + > + /* if we're close enough, stop the search */ > + if (power_line_ratio % 1000 < 50) > + break; > + } > + > + /* finding the optimal Hb is not critical */ > + if (p->hb == 2047) > + p->hb = 0x1f0; > +} > + > +static void > +gc2145_sensor_params_fit_vb_to_frame_period(struct gc2145_sensor_params* p, > + unsigned long frame_period) > +{ > + unsigned long rt, fp; > + > + p->vb = 8; > + rt = gc2145_sensor_params_get_row_period(p); > + fp = gc2145_sensor_params_get_frame_period(p); > + > + if (frame_period > fp) > + p->vb = frame_period * (p->row_skip + 1) / rt - p->win_height; > + > + if (p->vb > 4095) > + p->vb = 4095; > +} > + > +static int gc2145_sensor_params_apply(struct gc2145_dev *sensor, > + struct gc2145_sensor_params* p) > +{ > + u32 off_x = (GC2145_SENSOR_WIDTH_MAX - p->width) / 2; > + u32 off_y = (GC2145_SENSOR_HEIGHT_MAX - p->height) / 2; > + > + gc2145_tx_start(sensor); > + > + gc2145_tx_write8(sensor, 0xfd, (p->enable_scaler ? BIT(0) : 0) > + | (p->col_scaler_only ? BIT(1) : 0)); > + > + gc2145_tx_write8(sensor, 0x18, 0x0a > + | (p->col_skip ? BIT(7) : 0) > + | (p->row_skip ? BIT(6) : 0)); > + > + gc2145_tx_write16(sensor, 0x09, off_y); > + gc2145_tx_write16(sensor, 0x0b, off_x); > + gc2145_tx_write16(sensor, 0x0d, p->win_height); > + gc2145_tx_write16(sensor, 0x0f, p->win_width); > + gc2145_tx_write16(sensor, 0x05, p->hb); > + gc2145_tx_write16(sensor, 0x07, p->vb); > + gc2145_tx_write16(sensor, 0x11, p->sh_delay); > + > + gc2145_tx_write8(sensor, 0x13, p->st); > + gc2145_tx_write8(sensor, 0x14, p->et); > + > + return gc2145_tx_commit(sensor); > +} > + > +static int gc2145_setup_mode(struct gc2145_dev *sensor) > +{ > + int scaling_desired, ret, pad, i; > + struct gc2145_sensor_params params = {0}; > + unsigned long pclk2, frame_period; > + unsigned long power_line_freq = 50; > + unsigned long width = sensor->fmt.width; > + unsigned long height = sensor->fmt.height; > + unsigned long framerate = sensor->frame_interval.denominator; > + const struct gc2145_pixfmt *pix_fmt; > + unsigned long rt, ft, ft_rt; > + > + pix_fmt = gc2145_find_format(sensor->fmt.code); > + if (!pix_fmt) { > + dev_err(&sensor->i2c_client->dev, > + "pixel format not supported %u\n", sensor->fmt.code); > + return -EINVAL; > + } > + > + /* > + * Equations for calculating framerate are: > + * > + * ww = width + 16 > + * wh = height + 32 > + * Rt = (ww / 2 / (col_skip + 1) + sh_delay + Hb + 4) > + * Ft = Rt * (Vb + wh) / (row_skip + 1) > + * framerate = 2pclk / 4 / Ft > + * > + * Based on these equations: > + * > + * 1) First we need to determine what 2PCLK frequency to use. The 2PCLK > + * frequency is not arbitrarily precise, so we need to calculate the > + * actual frequency used, after setting our target frequency. > + * > + * We use a simple heuristic: > + * > + * If pixel_count * 2 * framerate * 1.15 is > 40MHz, we use 60MHz, > + * otherwise we use 40MHz. > + * > + * 2) We want to determine lowest Hb that we can use to extend row > + * period so that row time takes an integer fraction of the power > + * line frequency period. Minimum Hb is 0x1f0. > + * > + * 3) If the requested resolution is less than half the sensor's size, > + * we'll use scaling, or row skipping + column scaling, or row and > + * column skiping, depending on what allows us to achieve the > + * requested framerate. > + * > + * 4) We use the selected Hb to calculate Vb value that will give > + * us the desired framerate, given the scaling/skipping option > + * selected in 3). > + */ > + > + scaling_desired = width <= GC2145_SENSOR_WIDTH_MAX / 2 > + && height <= GC2145_SENSOR_HEIGHT_MAX / 2; > + > + pclk2 = 60000000; > + > + ret = gc2145_set_2pclk(sensor, &pclk2, false); > + if (ret < 0) > + return ret; > + > + gc2145_sensor_params_init(¶ms, width, height); > + > + /* > + * if the resolution is < half the sensor size, enable the scaler > + * to cover more area of the chip > + */ > + if (scaling_desired) { > + params.enable_scaler = 1; > + pclk2 *= 2; > + gc2145_sensor_params_init(¶ms, width * 2, height * 2); > + } > + > + /* we need to call this each time pclk or power_line_freq is changed */ > + gc2145_sensor_params_fit_hb_to_power_line_period(¶ms, > + power_line_freq, > + pclk2 / 2); > + > + frame_period = gc2145_sensor_params_get_frame_period(¶ms); > + if (framerate <= pclk2 / 2 / frame_period) > + goto apply; > + > + if (scaling_desired) { > + /* try using just the column scaler + row skip */ > + params.col_scaler_only = 1; > + params.row_skip = 1; > + gc2145_sensor_params_fit_hb_to_power_line_period(¶ms, > + power_line_freq, > + pclk2 / 2); > + > + frame_period = gc2145_sensor_params_get_frame_period(¶ms); > + if (framerate <= pclk2 / 2 / frame_period) > + goto apply; > + } > + > +apply: > + /* adjust vb to fit the target framerate */ > + gc2145_sensor_params_fit_vb_to_frame_period(¶ms, > + pclk2 / 2 / framerate); > + > + gc2145_sensor_params_apply(sensor, ¶ms); > + > + ret = gc2145_set_2pclk(sensor, &pclk2, true); > + if (ret < 0) > + return ret; > + > + pad = (width > 256 && height > 256) ? 32 : 16; > + > + ret = gc2145_setup_awb(sensor, pad, pad, width - pad * 2, height - pad * 2); > + if (ret) > + return ret; > + > + ret = gc2145_setup_aec(sensor, > + pad, pad, width - pad * 2, height - pad * 2, > + 2 * pad, 2 * pad, width - pad * 4, height - pad * 4); > + if (ret) > + return ret; > + > + gc2145_tx_start(sensor); > + > + rt = gc2145_sensor_params_get_row_period(¶ms); > + ft = gc2145_sensor_params_get_frame_period(¶ms); > + ft_rt = ft / rt / 4; > + > + for (i = 0; i < 7; i++) { > + /* exposure settings for exposure levels */ > + gc2145_tx_write16(sensor, 0x127 + 2 * i, ft_rt * (i + 1)); > + /* max dg gains */ > + gc2145_tx_write8(sensor, 0x135 + i, 0x50); > + } > + > + /* max analog gain */ > + gc2145_tx_write8(sensor, 0x11f, 0x50); > + /* max digital gain */ > + gc2145_tx_write8(sensor, 0x120, 0xe0); > + > + gc2145_tx_write8(sensor, GC2145_P0_ISP_OUT_FORMAT, pix_fmt->fmt_setup); > + > + /* set gamma curve */ > + gc2145_tx_update_bits(sensor, 0x80, BIT(6), BIT(6)); > + > + /* disable denoising */ > + gc2145_tx_update_bits(sensor, 0x80, BIT(2), 0); > + > + /* drive strength */ > + gc2145_tx_write8(sensor, 0x24, > + (pclk2 / (params.enable_scaler + 1)) > 40000000 ? > + 0xff : 0x55); > + > + return gc2145_tx_commit(sensor); > +} > + > +static int gc2145_set_stream(struct gc2145_dev *sensor, int enable) > +{ > + gc2145_tx_start(sensor); > + gc2145_tx_write8(sensor, GC2145_REG_PAD_IO, enable ? 0x0f : 0); > + > + return gc2145_tx_commit(sensor); > +} > + > +static int gc2145_s_stream(struct v4l2_subdev *sd, int enable) > +{ > + struct gc2145_dev *sensor = to_gc2145_dev(sd); > + int ret = 0; > + > + mutex_lock(&sensor->lock); > + > + if (sensor->streaming == !enable) { > + if (enable && sensor->pending_mode_change) { > + ret = gc2145_setup_mode(sensor); > + if (ret) > + goto out; > + } > + > + ret = gc2145_set_stream(sensor, enable); > + if (ret) > + goto out; > + > + sensor->streaming = !!enable; > + } > + > +out: > + mutex_unlock(&sensor->lock); > + return ret; > +} > + > +/* }}} */ > +/* {{{ Pad ops */ > + > +static int gc2145_enum_mbus_code(struct v4l2_subdev *sd, > + struct v4l2_subdev_state *sd_state, > + struct v4l2_subdev_mbus_code_enum *code) > +{ > + if (code->pad != 0 || code->index >= ARRAY_SIZE(gc2145_formats)) > + return -EINVAL; > + > + code->code = gc2145_formats[code->index].code; > + > + return 0; > +} > + > +static int gc2145_enum_frame_size(struct v4l2_subdev *sd, > + struct v4l2_subdev_state *sd_state, > + struct v4l2_subdev_frame_size_enum *fse) > +{ > + if (fse->pad != 0 || fse->index > 0) > + return -EINVAL; > + > + fse->min_width = GC2145_SENSOR_WIDTH_MIN; > + fse->max_width = GC2145_SENSOR_WIDTH_MAX; > + > + fse->min_height = GC2145_SENSOR_HEIGHT_MIN; > + fse->max_height = GC2145_SENSOR_HEIGHT_MAX; > + > + return 0; > +} > + > +static int gc2145_enum_frame_interval( > + struct v4l2_subdev *sd, > + struct v4l2_subdev_state *sd_state, > + struct v4l2_subdev_frame_interval_enum *fie) > +{ > + if (fie->pad != 0 || fie->index > 0) > + return -EINVAL; > + > + fie->interval.numerator = 1; > + fie->interval.denominator = 30; > + > + return 0; > +} > + > +static int gc2145_get_fmt(struct v4l2_subdev *sd, > + struct v4l2_subdev_state *sd_state, > + struct v4l2_subdev_format *format) > +{ > + struct gc2145_dev *sensor = to_gc2145_dev(sd); > + struct v4l2_mbus_framefmt *mf; > + > + if (format->pad != 0) > + return -EINVAL; > + > + if (format->which == V4L2_SUBDEV_FORMAT_TRY) { > + mf = v4l2_subdev_get_try_format(sd, sd_state, format->pad); > + format->format = *mf; > + return 0; > + } > + > + mutex_lock(&sensor->lock); > + format->format = sensor->fmt; > + mutex_unlock(&sensor->lock); > + > + return 0; > +} > + > +static int gc2145_set_fmt(struct v4l2_subdev *sd, > + struct v4l2_subdev_state *sd_state, > + struct v4l2_subdev_format *format) > +{ > + struct gc2145_dev *sensor = to_gc2145_dev(sd); > + struct v4l2_mbus_framefmt *mf = &format->format; > + const struct gc2145_pixfmt *pixfmt; > + int ret = 0; > + > + if (format->pad != 0) > + return -EINVAL; > + > + /* check if we support requested mbus fmt */ > + pixfmt = gc2145_find_format(mf->code); > + if (!pixfmt) > + pixfmt = &gc2145_formats[0]; > + > + mf->code = pixfmt->code; > + mf->colorspace = pixfmt->colorspace; > + mf->xfer_func = V4L2_XFER_FUNC_DEFAULT; > + mf->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; > + mf->quantization = V4L2_QUANTIZATION_DEFAULT; > + mf->field = V4L2_FIELD_NONE; > + > + mutex_lock(&sensor->lock); > + > + mf->width = clamp(mf->width, GC2145_SENSOR_WIDTH_MIN, > + GC2145_SENSOR_WIDTH_MAX); > + mf->height = clamp(mf->height, GC2145_SENSOR_HEIGHT_MIN, > + GC2145_SENSOR_HEIGHT_MAX); > + > + if (format->which == V4L2_SUBDEV_FORMAT_TRY) { > + struct v4l2_mbus_framefmt *try_mf; > + > + try_mf = v4l2_subdev_get_try_format(sd, sd_state, format->pad); > + *try_mf = *mf; > + goto out; > + } > + > + if (sensor->streaming) { > + ret = -EBUSY; > + goto out; > + } > + > + sensor->fmt = *mf; > + sensor->pending_mode_change = true; > +out: > + mutex_unlock(&sensor->lock); > + return ret; > +} > + > +/* }}} */ > +/* {{{ Core Ops */ > + > +static int gc2145_configure(struct gc2145_dev *sensor) > +{ > + struct v4l2_fwnode_bus_parallel *bus = &sensor->ep.bus.parallel; > + u8 sync_mode = 0; > + u16 chip_id; > + int ret; > + > + ret = gc2145_read16(sensor, GC2145_REG_CHIP_ID, &chip_id); > + if (ret) > + return ret; > + > + dev_info(&sensor->i2c_client->dev, "device id: 0x%04x\n", > + (unsigned int)chip_id); > + > + if (chip_id != GC2145_REG_CHIP_ID_VALUE) { > + dev_err(&sensor->i2c_client->dev, > + "unsupported device id: 0x%04x\n", > + (unsigned int)chip_id); > + return -EINVAL; > + } > + > + /* setup parallel bus */ > + > + if (bus->flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) > + sync_mode |= 0x01; > + > + if (bus->flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) > + sync_mode |= 0x02; > + > + if (bus->flags & V4L2_MBUS_PCLK_SAMPLE_FALLING) > + sync_mode |= 0x04; > + > + gc2145_tx_start(sensor); > + > + /* soft reset */ > + gc2145_tx_write8(sensor, GC2145_REG_RESET, 0xf0); > + > + /* enable analog/digital parts */ > + gc2145_tx_write8(sensor, GC2145_REG_ANALOG_PWC, 0x06); > + > + /* safe initial PLL setting */ > + gc2145_tx_write8(sensor, GC2145_REG_PLL_MODE1, 0x1d); > + gc2145_tx_write8(sensor, GC2145_REG_PLL_MODE2, 0x84); > + gc2145_tx_write8(sensor, GC2145_REG_CLK_DIV_MODE, 0x00); > + > + gc2145_tx_write8(sensor, GC2145_REG_CM_MODE, 0xfe); > + > + /* disable pads */ > + gc2145_tx_write8(sensor, GC2145_REG_PAD_IO, 0); > + > + gc2145_tx_write8(sensor, 0x19, 0x0c); /* set AD pipe number */ > + gc2145_tx_write8(sensor, 0x20, 0x01); /* AD clk mode */ > + > + /* enable defect correction, etc. */ > + gc2145_tx_write8(sensor, 0x80, 0x0b); > + > + gc2145_tx_write8(sensor, GC2145_P0_SYNC_MODE, sync_mode); > + > + ret = gc2145_tx_commit(sensor); > + if (ret) > + return ret; > + > + /* load default register values from the firmware file */ > + ret = gc2145_load_firmware(sensor, GC2145_FIRMWARE_PARAMETERS); > + if (ret < 0) > + return ret; > + > + return 0; > +} > + > +static int gc2145_set_power(struct gc2145_dev *sensor, bool on) > +{ > + int ret = 0; > + > + if (on) { > + ret = regulator_bulk_enable(GC2145_NUM_SUPPLIES, > + sensor->supplies); > + if (ret) > + return ret; > + > + ret = clk_set_rate(sensor->xclk, 24000000); > + if (ret) > + goto xclk_off; > + > + ret = clk_prepare_enable(sensor->xclk); > + if (ret) > + goto power_off; > + > + usleep_range(10000, 12000); > + gpiod_direction_output(sensor->reset_gpio, 1); > + usleep_range(10000, 12000); > + gpiod_direction_output(sensor->enable_gpio, 1); > + usleep_range(10000, 12000); > + gpiod_direction_output(sensor->reset_gpio, 0); > + usleep_range(40000, 50000); > + > + ret = gc2145_configure(sensor); > + if (ret) > + goto power_off; > + > + ret = gc2145_setup_mode(sensor); > + if (ret) > + goto power_off; > + > + return 0; > + } > + > +xclk_off: > + clk_disable_unprepare(sensor->xclk); > +power_off: > + gpiod_direction_input(sensor->reset_gpio); > + gpiod_direction_input(sensor->enable_gpio); > + regulator_bulk_disable(GC2145_NUM_SUPPLIES, sensor->supplies); > + msleep(100); > + return ret; > +} > + > +static int gc2145_s_power(struct v4l2_subdev *sd, int on) > +{ > + struct gc2145_dev *sensor = to_gc2145_dev(sd); > + bool power_up, power_down; > + int ret = 0; > + > + mutex_lock(&sensor->lock); > + > + power_up = on && !sensor->powered; > + power_down = !on && sensor->powered; > + > + if (power_up || power_down) { > + ret = gc2145_set_power(sensor, power_up); > + if (!ret) > + sensor->powered = on; > + } > + > + mutex_unlock(&sensor->lock); > + > + if (!ret && power_up) { > + /* restore controls */ > + ret = v4l2_ctrl_handler_setup(&sensor->ctrls.handler); > + if (ret) > + gc2145_s_power(sd, 0); > + } > + > + return ret; > +} > + > +#ifdef CONFIG_VIDEO_ADV_DEBUG > +static int gc2145_g_register(struct v4l2_subdev *sd, > + struct v4l2_dbg_register *reg) > +{ > + struct gc2145_dev *sensor = to_gc2145_dev(sd); > + int ret; > + u8 val = 0; > + > + if (reg->reg > 0xffff) > + return -EINVAL; > + > + reg->size = 1; > + > + mutex_lock(&sensor->lock); > + ret = gc2145_read(sensor, reg->reg, &val); > + mutex_unlock(&sensor->lock); > + if (ret) > + return -EIO; > + > + reg->val = val; > + return 0; > +} > + > +static int gc2145_s_register(struct v4l2_subdev *sd, > + const struct v4l2_dbg_register *reg) > +{ > + struct gc2145_dev *sensor = to_gc2145_dev(sd); > + int ret; > + > + if (reg->reg > 0xffff || reg->val > 0xff) > + return -EINVAL; > + > + mutex_lock(&sensor->lock); > + ret = gc2145_write(sensor, reg->reg, reg->val); > + mutex_unlock(&sensor->lock); > + > + return ret; > +} > +#endif > + > +/* }}} */ > + > +static const struct v4l2_subdev_core_ops gc2145_core_ops = { > + .s_power = gc2145_s_power, > +#ifdef CONFIG_VIDEO_ADV_DEBUG > + .g_register = gc2145_g_register, > + .s_register = gc2145_s_register, > +#endif > +}; > + > +static const struct v4l2_subdev_pad_ops gc2145_pad_ops = { > + .enum_mbus_code = gc2145_enum_mbus_code, > + .enum_frame_size = gc2145_enum_frame_size, > + .enum_frame_interval = gc2145_enum_frame_interval, > + .get_fmt = gc2145_get_fmt, > + .set_fmt = gc2145_set_fmt, > +}; > + > +static const struct v4l2_subdev_video_ops gc2145_video_ops = { > + .g_frame_interval = gc2145_g_frame_interval, > + .s_frame_interval = gc2145_s_frame_interval, > + .s_stream = gc2145_s_stream, > +}; > + > +static const struct v4l2_subdev_ops gc2145_subdev_ops = { > + .core = &gc2145_core_ops, > + .pad = &gc2145_pad_ops, > + .video = &gc2145_video_ops, > +}; > + > +static int gc2145_get_regulators(struct gc2145_dev *sensor) > +{ > + int i; > + > + for (i = 0; i < GC2145_NUM_SUPPLIES; i++) > + sensor->supplies[i].supply = gc2145_supply_name[i]; > + > + return devm_regulator_bulk_get(&sensor->i2c_client->dev, > + GC2145_NUM_SUPPLIES, > + sensor->supplies); > +} > + > +static int gc2145_probe(struct i2c_client *client, > + const struct i2c_device_id *id) > +{ > + struct device *dev = &client->dev; > + struct fwnode_handle *endpoint; > + struct gc2145_dev *sensor; > + int ret; > + > + sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); > + if (!sensor) > + return -ENOMEM; > + > + sensor->i2c_client = client; > + > + sensor->fmt.code = gc2145_formats[0].code; > + sensor->fmt.width = 1600; > + sensor->fmt.height = 1200; > + sensor->fmt.field = V4L2_FIELD_NONE; > + sensor->frame_interval.numerator = 1; > + sensor->frame_interval.denominator = 10; > + sensor->pending_mode_change = true; > + sensor->current_bank = 0xff; > + > + endpoint = fwnode_graph_get_next_endpoint( > + of_fwnode_handle(client->dev.of_node), NULL); > + if (!endpoint) { > + dev_err(dev, "endpoint node not found\n"); > + return -EINVAL; > + } > + > + ret = v4l2_fwnode_endpoint_parse(endpoint, &sensor->ep); > + fwnode_handle_put(endpoint); > + if (ret) { > + dev_err(dev, "could not parse endpoint\n"); > + return ret; > + } > + > + if (sensor->ep.bus_type != V4L2_MBUS_PARALLEL) { > + dev_err(dev, "unsupported bus type %d\n", sensor->ep.bus_type); > + return -EINVAL; > + } > + > + sensor->xclk = devm_clk_get(dev, "xclk"); > + if (IS_ERR(sensor->xclk)) { > + dev_err(dev, "failed to get xclk\n"); > + return PTR_ERR(sensor->xclk); > + } > + > + sensor->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_IN); > + if (IS_ERR(sensor->enable_gpio)) { > + dev_err(dev, "failed to get enable gpio\n"); > + return PTR_ERR(sensor->enable_gpio); > + } > + > + sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_IN); > + if (IS_ERR(sensor->reset_gpio)) { > + dev_err(dev, "failed to get reset gpio\n"); > + return PTR_ERR(sensor->reset_gpio); > + } > + > + if (!sensor->enable_gpio || !sensor->reset_gpio) { > + dev_err(dev, "enable and reset pins must be configured\n"); > + return ret; > + } > + > + v4l2_i2c_subdev_init(&sensor->sd, client, &gc2145_subdev_ops); > + > + sensor->sd.flags = V4L2_SUBDEV_FL_HAS_DEVNODE; > + sensor->pad.flags = MEDIA_PAD_FL_SOURCE; > + sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; > + ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad); > + if (ret) > + return ret; > + > + mutex_init(&sensor->lock); > + > + ret = gc2145_get_regulators(sensor); > + if (ret) > + goto entity_cleanup; > + > + ret = gc2145_init_controls(sensor); > + if (ret) > + goto entity_cleanup; > + > + ret = v4l2_async_register_subdev(&sensor->sd); > + if (ret) > + goto free_ctrls; > + > + return 0; > + > +free_ctrls: > + v4l2_ctrl_handler_free(&sensor->ctrls.handler); > +entity_cleanup: > + mutex_destroy(&sensor->lock); > + media_entity_cleanup(&sensor->sd.entity); > + return ret; > +} > + > +static int gc2145_remove(struct i2c_client *client) > +{ > + struct v4l2_subdev *sd = i2c_get_clientdata(client); > + struct gc2145_dev *sensor = to_gc2145_dev(sd); > + > + v4l2_async_unregister_subdev(&sensor->sd); > + mutex_destroy(&sensor->lock); > + media_entity_cleanup(&sensor->sd.entity); > + v4l2_ctrl_handler_free(&sensor->ctrls.handler); > + > + return 0; > +} > + > +static const struct i2c_device_id gc2145_id[] = { > + {"gc2145", 0}, > + {}, > +}; > +MODULE_DEVICE_TABLE(i2c, gc2145_id); > + > +static const struct of_device_id gc2145_dt_ids[] = { > + { .compatible = "galaxycore,gc2145" }, > + { /* sentinel */ } > +}; > +MODULE_DEVICE_TABLE(of, gc2145_dt_ids); > + > +static struct i2c_driver gc2145_i2c_driver = { > + .driver = { > + .name = "gc2145", > + .of_match_table = gc2145_dt_ids, > + }, > + .id_table = gc2145_id, > + .probe = gc2145_probe, > + .remove = gc2145_remove, > +}; > + > +module_i2c_driver(gc2145_i2c_driver); > + > +MODULE_AUTHOR("Ondrej Jirman <megi@xxxxxx>"); > +MODULE_DESCRIPTION("GC2145 Camera Subdev Driver"); > +MODULE_LICENSE("GPL"); > diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c > index db5a19babe67..79630d25106c 100644 > --- a/drivers/media/i2c/ov5640.c > +++ b/drivers/media/i2c/ov5640.c > @@ -9,6 +9,7 @@ > #include <linux/clkdev.h> > #include <linux/ctype.h> > #include <linux/delay.h> > +#include <linux/firmware.h> > #include <linux/device.h> > #include <linux/gpio/consumer.h> > #include <linux/i2c.h> > @@ -31,7 +32,11 @@ > > #define OV5640_DEFAULT_SLAVE_ID 0x3c > > +#define OV5640_REG_SYS_RESET00 0x3000 > +#define OV5640_REG_SYS_RESET01 0x3001 > #define OV5640_REG_SYS_RESET02 0x3002 > +#define OV5640_REG_SYS_CLOCK_ENABLE00 0x3004 > +#define OV5640_REG_SYS_CLOCK_ENABLE01 0x3005 > #define OV5640_REG_SYS_CLOCK_ENABLE02 0x3006 > #define OV5640_REG_SYS_CTRL0 0x3008 > #define OV5640_REG_SYS_CTRL0_SW_PWDN 0x42 > @@ -41,6 +46,14 @@ > #define OV5640_REG_PAD_OUTPUT_ENABLE01 0x3017 > #define OV5640_REG_PAD_OUTPUT_ENABLE02 0x3018 > #define OV5640_REG_PAD_OUTPUT00 0x3019 > +#define OV5640_REG_FW_CMD_MAIN 0x3022 > +#define OV5640_REG_FW_CMD_ACK 0x3023 > +#define OV5640_REG_FW_CMD_PARA0 0x3024 > +#define OV5640_REG_FW_CMD_PARA1 0x3025 > +#define OV5640_REG_FW_CMD_PARA2 0x3026 > +#define OV5640_REG_FW_CMD_PARA3 0x3027 > +#define OV5640_REG_FW_CMD_PARA4 0x3028 > +#define OV5640_REG_FW_STATUS 0x3029 > #define OV5640_REG_SYSTEM_CONTROL1 0x302e > #define OV5640_REG_SC_PLL_CTRL0 0x3034 > #define OV5640_REG_SC_PLL_CTRL1 0x3035 > @@ -59,6 +72,7 @@ > #define OV5640_REG_AEC_PK_MANUAL 0x3503 > #define OV5640_REG_AEC_PK_REAL_GAIN 0x350a > #define OV5640_REG_AEC_PK_VTS 0x350c > +#define OV5640_REG_VCM_CONTROL4 0x3606 > #define OV5640_REG_TIMING_DVPHO 0x3808 > #define OV5640_REG_TIMING_DVPVO 0x380a > #define OV5640_REG_TIMING_HTS 0x380c > @@ -96,6 +110,20 @@ > #define OV5640_REG_SDE_CTRL4 0x5584 > #define OV5640_REG_SDE_CTRL5 0x5585 > #define OV5640_REG_AVG_READOUT 0x56a1 > +#define OV5640_REG_FIRMWARE_BASE 0x8000 > + > +#define OV5640_FW_STATUS_S_FIRMWARE 0x7f > +#define OV5640_FW_STATUS_S_STARTUP 0x7e > +#define OV5640_FW_STATUS_S_IDLE 0x70 > +#define OV5640_FW_STATUS_S_FOCUSING 0x00 > +#define OV5640_FW_STATUS_S_FOCUSED 0x10 > + > +#define OV5640_FW_CMD_TRIGGER_FOCUS 0x03 > +#define OV5640_FW_CMD_CONTINUOUS_FOCUS 0x04 > +#define OV5640_FW_CMD_GET_FOCUS_RESULT 0x07 > +#define OV5640_FW_CMD_RELEASE_FOCUS 0x08 > +#define OV5640_FW_CMD_ZONE_CONFIG 0x12 > +#define OV5640_FW_CMD_DEFAULT_ZONES 0x80 > > enum ov5640_mode_id { > OV5640_MODE_QQVGA_160_120 = 0, > @@ -112,7 +140,11 @@ enum ov5640_mode_id { > }; > > enum ov5640_frame_rate { > - OV5640_15_FPS = 0, > + OV5640_2_FPS = 0, > + OV5640_3_FPS, > + OV5640_5_FPS, > + OV5640_7_FPS, > + OV5640_15_FPS, > OV5640_30_FPS, > OV5640_60_FPS, > OV5640_NUM_FRAMERATES, > @@ -156,6 +188,10 @@ MODULE_PARM_DESC(virtual_channel, > "MIPI CSI-2 virtual channel (0..3), default 0"); > > static const int ov5640_framerates[] = { > + [OV5640_2_FPS] = 2, > + [OV5640_3_FPS] = 3, > + [OV5640_5_FPS] = 5, > + [OV5640_7_FPS] = 7, > [OV5640_15_FPS] = 15, > [OV5640_30_FPS] = 30, > [OV5640_60_FPS] = 60, > @@ -214,6 +250,12 @@ struct ov5640_ctrls { > struct v4l2_ctrl *auto_gain; > struct v4l2_ctrl *gain; > }; > + struct { > + struct v4l2_ctrl *focus_auto; > + struct v4l2_ctrl *af_start; > + struct v4l2_ctrl *af_stop; > + struct v4l2_ctrl *af_status; > + }; > struct v4l2_ctrl *brightness; > struct v4l2_ctrl *light_freq; > struct v4l2_ctrl *saturation; > @@ -257,6 +299,8 @@ struct ov5640_dev { > > bool pending_mode_change; > bool streaming; > + > + bool af_initialized; > }; > > static inline struct ov5640_dev *to_ov5640_dev(struct v4l2_subdev *sd) > @@ -1764,6 +1808,7 @@ static int ov5640_set_mode(struct ov5640_dev *sensor) > bool auto_exp = sensor->ctrls.auto_exp->val == V4L2_EXPOSURE_AUTO; > unsigned long rate; > int ret; > + u8 tmp; > > dn_mode = mode->dn_mode; > orig_dn_mode = orig_mode->dn_mode; > @@ -1836,6 +1881,22 @@ static int ov5640_set_mode(struct ov5640_dev *sensor) > if (ret < 0) > return ret; > > + ret = ov5640_read_reg(sensor, 0x5308, &tmp); > + if (ret) > + return ret; > + > + ret = ov5640_write_reg(sensor, 0x5308, tmp | 0x10 | 0x40); > + if (ret) > + return ret; > + > + ret = ov5640_write_reg(sensor, 0x5306, 0); > + if (ret) > + return ret; > + > + ret = ov5640_write_reg(sensor, 0x5302, 0); > + if (ret) > + return ret; > + > sensor->pending_mode_change = false; > sensor->last_mode = mode; > > @@ -1904,9 +1965,122 @@ static void ov5640_reset(struct ov5640_dev *sensor) > usleep_range(20000, 25000); > } > > +static int ov5640_copy_fw_to_device(struct ov5640_dev *sensor, > + const struct firmware *fw) > +{ > + struct i2c_client *client = sensor->i2c_client; > + const u8 *data = (const u8 *)fw->data; > + u8 fw_status; > + int i; > + int ret; > + > + // Putting MCU in reset state > + ret = ov5640_write_reg(sensor, OV5640_REG_SYS_RESET00, 0x20); > + if (ret) > + return ret; > + > + // Write firmware > + for (i = 0; i < fw->size / sizeof(u8); i++) > + ov5640_write_reg(sensor, > + OV5640_REG_FIRMWARE_BASE + i, > + data[i]); > + > + // Reset MCU state > + ov5640_write_reg(sensor, OV5640_REG_FW_CMD_MAIN, 0x00); > + ov5640_write_reg(sensor, OV5640_REG_FW_CMD_ACK, 0x00); > + ov5640_write_reg(sensor, OV5640_REG_FW_CMD_PARA0, 0x00); > + ov5640_write_reg(sensor, OV5640_REG_FW_CMD_PARA1, 0x00); > + ov5640_write_reg(sensor, OV5640_REG_FW_CMD_PARA2, 0x00); > + ov5640_write_reg(sensor, OV5640_REG_FW_CMD_PARA3, 0x00); > + ov5640_write_reg(sensor, OV5640_REG_FW_CMD_PARA4, 0x00); > + ov5640_write_reg(sensor, OV5640_REG_FW_STATUS, 0x7f); > + > + // Start AF MCU > + ret = ov5640_write_reg(sensor, OV5640_REG_SYS_RESET00, 0x00); > + if (ret) > + return ret; > + > + dev_info(&client->dev, "firmware upload success\n"); > + > + // Wait for firmware to be ready > + for (i = 0; i < 5; i++) { > + ret = ov5640_read_reg(sensor, OV5640_REG_FW_STATUS, &fw_status); > + if (fw_status == OV5640_FW_STATUS_S_IDLE) { > + dev_info(&client->dev, "fw started after %d ms\n", i * 50); > + return ret; > + } > + msleep(50); > + } > + dev_err(&client->dev, "uploaded firmware didn't start, got to 0x%x, retrying...\n", fw_status); > + > + // Putting MCU in reset state > + ret = ov5640_write_reg(sensor, OV5640_REG_SYS_RESET00, 0x20); > + if (ret) > + return ret; > + // Start AF MCU > + ret = ov5640_write_reg(sensor, OV5640_REG_SYS_RESET00, 0x00); > + if (ret) > + return ret; > + // Wait for firmware to be ready > + for (i = 0; i < 5; i++) { > + ret = ov5640_read_reg(sensor, OV5640_REG_FW_STATUS, &fw_status); > + if (fw_status == OV5640_FW_STATUS_S_IDLE) { > + dev_info(&client->dev, "fw started after %d ms\n", i * 50); > + return ret; > + } > + msleep(50); > + } > + dev_err(&client->dev, "uploaded firmware didn't start, got to 0x%x\n", fw_status); > + return -ETIMEDOUT; > +} > + > +static int ov5640_af_init(struct ov5640_dev *sensor) > +{ > + struct i2c_client *client = sensor->i2c_client; > + const char* fwname = "ov5640_af.bin"; > + const struct firmware *fw; > + int ret; > + > + if (sensor->af_initialized) { > + return 0; > + } > + > + if (firmware_request_nowarn(&fw, fwname, &client->dev) == 0) { > + ret = ov5640_copy_fw_to_device(sensor, fw); > + if (ret == 0) > + sensor->af_initialized = 1; > + } else { > + dev_warn(&client->dev, "%s: no autofocus firmware available (%s)\n", > + __func__, fwname); > + ret = -1; > + } > + release_firmware(fw); > + > + if (ret) > + return ret; > + > + // Enable AF systems > + ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_CLOCK_ENABLE00, > + (BIT(6) | BIT(5)), (BIT(6) | BIT(5))); > + if (ret) > + return ret; > + ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_CLOCK_ENABLE01, > + BIT(6), BIT(6)); > + if (ret) > + return ret; > + > + // Set lens focus driver on > + ov5640_write_reg(sensor, OV5640_REG_VCM_CONTROL4, 0x3f); > + if (ret) > + return ret; > + > + return ret; > +} > + > static int ov5640_set_power_on(struct ov5640_dev *sensor) > { > struct i2c_client *client = sensor->i2c_client; > + u16 chip_id; > int ret; > > ret = clk_prepare_enable(sensor->xclk); > @@ -1924,6 +2098,8 @@ static int ov5640_set_power_on(struct ov5640_dev *sensor) > goto xclk_off; > } > > + sensor->af_initialized = 0; > + > ov5640_reset(sensor); > ov5640_power(sensor, true); > > @@ -1931,6 +2107,13 @@ static int ov5640_set_power_on(struct ov5640_dev *sensor) > if (ret) > goto power_off; > > + ret = ov5640_read_reg16(sensor, OV5640_REG_CHIP_ID, &chip_id); > + if (ret) { > + dev_err(&client->dev, "%s: failed to read chip identifier\n", > + __func__); > + goto power_off; > + } > + > return 0; > > power_off: > @@ -1946,6 +2129,7 @@ static void ov5640_set_power_off(struct ov5640_dev *sensor) > ov5640_power(sensor, false); > regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies); > clk_disable_unprepare(sensor->xclk); > + msleep(100); > } > > static int ov5640_set_power_mipi(struct ov5640_dev *sensor, bool on) > @@ -2193,11 +2377,11 @@ static int ov5640_try_frame_interval(struct ov5640_dev *sensor, > u32 width, u32 height) > { > const struct ov5640_mode_info *mode; > - enum ov5640_frame_rate rate = OV5640_15_FPS; > + enum ov5640_frame_rate rate = OV5640_2_FPS; > int minfps, maxfps, best_fps, fps; > int i; > > - minfps = ov5640_framerates[OV5640_15_FPS]; > + minfps = ov5640_framerates[OV5640_2_FPS]; > maxfps = ov5640_framerates[OV5640_60_FPS]; > > if (fi->numerator == 0) { > @@ -2433,6 +2617,35 @@ static int ov5640_set_framefmt(struct ov5640_dev *sensor, > is_jpeg ? (BIT(5) | BIT(3)) : 0); > } > > +static int ov5640_fw_command(struct ov5640_dev *sensor, int command) > +{ > + u8 fw_ack; > + int i; > + int ret; > + > + ret = ov5640_write_reg(sensor, OV5640_REG_FW_CMD_ACK, 0x01); > + if(ret) > + return ret; > + > + ret = ov5640_write_reg(sensor, OV5640_REG_FW_CMD_MAIN, command); > + if(ret) > + return ret; > + > + for (i = 0; i < 100; i++) { > + ret = ov5640_read_reg(sensor, OV5640_REG_FW_CMD_ACK, &fw_ack); > + if (ret) > + return ret; > + > + if (fw_ack == 0){ > + return ret; > + } > + > + msleep(50); > + } > + return -ETIMEDOUT; > +} > + > + > /* > * Sensor Controls. > */ > @@ -2549,6 +2762,41 @@ static int ov5640_set_ctrl_exposure(struct ov5640_dev *sensor, > return ret; > } > > +static int ov5640_set_ctrl_focus(struct ov5640_dev *sensor, int command) > +{ > + struct i2c_client *client = sensor->i2c_client; > + int ret; > + > + ret = ov5640_af_init(sensor); > + if (ret) { > + dev_err(&client->dev, "%s: no autofocus firmware loaded\n", > + __func__); > + return 0; > + } > + > + if (command == OV5640_FW_CMD_RELEASE_FOCUS) { > + dev_dbg(&client->dev, "%s: Releasing autofocus\n", > + __func__); > + return ov5640_fw_command(sensor, OV5640_FW_CMD_RELEASE_FOCUS); > + } > + > + // Restart zone config > + ret = ov5640_fw_command(sensor, OV5640_FW_CMD_ZONE_CONFIG); > + if (ret) > + return ret; > + > + // Set default focus zones > + ret = ov5640_fw_command(sensor, OV5640_FW_CMD_DEFAULT_ZONES); > + if (ret) > + return ret; > + > + dev_dbg(&client->dev, "%s: Triggering autofocus\n", > + __func__); > + > + // Start focussing > + return ov5640_fw_command(sensor, command); > +} > + > static int ov5640_set_ctrl_gain(struct ov5640_dev *sensor, bool auto_gain) > { > struct ov5640_ctrls *ctrls = &sensor->ctrls; > @@ -2655,6 +2903,32 @@ static int ov5640_set_ctrl_vflip(struct ov5640_dev *sensor, int value) > (BIT(2) | BIT(1)) : 0); > } > > +static int ov5640_get_af_status(struct ov5640_dev *sensor) > +{ > + u8 fw_status; > + int ret; > + > + ret = ov5640_read_reg(sensor, OV5640_REG_FW_STATUS, &fw_status); > + if (ret) > + return ret; > + > + switch (fw_status) { > + case OV5640_FW_STATUS_S_FIRMWARE: > + case OV5640_FW_STATUS_S_STARTUP: > + return V4L2_AUTO_FOCUS_STATUS_FAILED; > + break; > + case OV5640_FW_STATUS_S_IDLE: > + return V4L2_AUTO_FOCUS_STATUS_IDLE; > + break; > + case OV5640_FW_STATUS_S_FOCUSED: > + return V4L2_AUTO_FOCUS_STATUS_REACHED; > + break; > + default: > + return V4L2_AUTO_FOCUS_STATUS_BUSY; > + break; > + } > +} > + > static int ov5640_g_volatile_ctrl(struct v4l2_ctrl *ctrl) > { > struct v4l2_subdev *sd = ctrl_to_sd(ctrl); > @@ -2676,6 +2950,12 @@ static int ov5640_g_volatile_ctrl(struct v4l2_ctrl *ctrl) > return val; > sensor->ctrls.exposure->val = val; > break; > + case V4L2_CID_FOCUS_AUTO: > + val = ov5640_get_af_status(sensor); > + if (val < 0) > + return val; > + sensor->ctrls.af_status->val = val; > + break; > } > > return 0; > @@ -2707,6 +2987,18 @@ static int ov5640_s_ctrl(struct v4l2_ctrl *ctrl) > case V4L2_CID_AUTO_WHITE_BALANCE: > ret = ov5640_set_ctrl_white_balance(sensor, ctrl->val); > break; > + case V4L2_CID_FOCUS_AUTO: > + if (ctrl->val) > + ret = ov5640_set_ctrl_focus(sensor, OV5640_FW_CMD_CONTINUOUS_FOCUS); > + else > + ret = ov5640_set_ctrl_focus(sensor, OV5640_FW_CMD_RELEASE_FOCUS); > + break; > + case V4L2_CID_AUTO_FOCUS_START: > + ret = ov5640_set_ctrl_focus(sensor, OV5640_FW_CMD_TRIGGER_FOCUS); > + break; > + case V4L2_CID_AUTO_FOCUS_STOP: > + ret = ov5640_set_ctrl_focus(sensor, OV5640_FW_CMD_RELEASE_FOCUS); > + break; > case V4L2_CID_HUE: > ret = ov5640_set_ctrl_hue(sensor, ctrl->val); > break; > @@ -2779,6 +3071,20 @@ static int ov5640_init_controls(struct ov5640_dev *sensor) > ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN, > 0, 1023, 1, 0); > > + /* Autofocus */ > + ctrls->focus_auto = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FOCUS_AUTO, > + 0, 1, 1, 0); > + ctrls->af_start = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTO_FOCUS_START, > + 0, 1, 1, 0); > + ctrls->af_stop = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTO_FOCUS_STOP, > + 0, 1, 1, 0); > + ctrls->af_status = v4l2_ctrl_new_std(hdl, ops, > + V4L2_CID_AUTO_FOCUS_STATUS, 0, > + (V4L2_AUTO_FOCUS_STATUS_BUSY | > + V4L2_AUTO_FOCUS_STATUS_REACHED | > + V4L2_AUTO_FOCUS_STATUS_FAILED), > + 0, V4L2_AUTO_FOCUS_STATUS_IDLE); > + > ctrls->saturation = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION, > 0, 255, 1, 64); > ctrls->hue = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HUE, > @@ -2812,6 +3118,7 @@ static int ov5640_init_controls(struct ov5640_dev *sensor) > v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false); > v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true); > v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true); > + v4l2_ctrl_cluster(4, &ctrls->focus_auto); > > sensor->sd.ctrl_handler = hdl; > return 0; > @@ -3013,34 +3320,6 @@ static int ov5640_get_regulators(struct ov5640_dev *sensor) > sensor->supplies); > } > > -static int ov5640_check_chip_id(struct ov5640_dev *sensor) > -{ > - struct i2c_client *client = sensor->i2c_client; > - int ret = 0; > - u16 chip_id; > - > - ret = ov5640_set_power_on(sensor); > - if (ret) > - return ret; > - > - ret = ov5640_read_reg16(sensor, OV5640_REG_CHIP_ID, &chip_id); > - if (ret) { > - dev_err(&client->dev, "%s: failed to read chip identifier\n", > - __func__); > - goto power_off; > - } > - > - if (chip_id != 0x5640) { > - dev_err(&client->dev, "%s: wrong chip identifier, expected 0x5640, got 0x%x\n", > - __func__, chip_id); > - ret = -ENXIO; > - } > - > -power_off: > - ov5640_set_power_off(sensor); > - return ret; > -} > - > static int ov5640_probe(struct i2c_client *client) > { > struct device *dev = &client->dev; > @@ -3076,7 +3355,7 @@ static int ov5640_probe(struct i2c_client *client) > &ov5640_mode_data[OV5640_MODE_VGA_640_480]; > sensor->last_mode = sensor->current_mode; > > - sensor->ae_target = 52; > + sensor->ae_target = 28; > > /* optional indication of physical rotation of sensor */ > ret = fwnode_property_read_u32(dev_fwnode(&client->dev), "rotation", > @@ -3158,10 +3437,6 @@ static int ov5640_probe(struct i2c_client *client) > > mutex_init(&sensor->lock); > > - ret = ov5640_check_chip_id(sensor); > - if (ret) > - goto entity_cleanup; > - > ret = ov5640_init_controls(sensor); > if (ret) > goto entity_cleanup; > > -- > People of Russia, stop Putin before his war on Ukraine escalates.
