diff options
Diffstat (limited to 'drivers/media/i2c/s5k4ecgx.c')
| -rw-r--r-- | drivers/media/i2c/s5k4ecgx.c | 1032 |
1 files changed, 0 insertions, 1032 deletions
diff --git a/drivers/media/i2c/s5k4ecgx.c b/drivers/media/i2c/s5k4ecgx.c deleted file mode 100644 index 3dddcd9dd351..000000000000 --- a/drivers/media/i2c/s5k4ecgx.c +++ /dev/null @@ -1,1032 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Driver for Samsung S5K4ECGX 1/4" 5Mp CMOS Image Sensor SoC - * with an Embedded Image Signal Processor. - * - * Copyright (C) 2012, Linaro, Sangwook Lee <sangwook.lee@linaro.org> - * Copyright (C) 2012, Insignal Co,. Ltd, Homin Lee <suapapa@insignal.co.kr> - * - * Based on s5k6aa and noon010pc30 driver - * Copyright (C) 2011, Samsung Electronics Co., Ltd. - */ - -#include <linux/clk.h> -#include <linux/crc32.h> -#include <linux/ctype.h> -#include <linux/delay.h> -#include <linux/firmware.h> -#include <linux/gpio.h> -#include <linux/i2c.h> -#include <linux/module.h> -#include <linux/regulator/consumer.h> -#include <linux/slab.h> -#include <asm/unaligned.h> - -#include <media/media-entity.h> -#include <media/i2c/s5k4ecgx.h> -#include <media/v4l2-ctrls.h> -#include <media/v4l2-device.h> -#include <media/v4l2-mediabus.h> -#include <media/v4l2-subdev.h> - -static int debug; -module_param(debug, int, 0644); - -#define S5K4ECGX_DRIVER_NAME "s5k4ecgx" -#define S5K4ECGX_FIRMWARE "s5k4ecgx.bin" - -/* Firmware revision information */ -#define REG_FW_REVISION 0x700001a6 -#define REG_FW_VERSION 0x700001a4 -#define S5K4ECGX_REVISION_1_1 0x11 -#define S5K4ECGX_FW_VERSION 0x4ec0 - -/* General purpose parameters */ -#define REG_USER_BRIGHTNESS 0x7000022c -#define REG_USER_CONTRAST 0x7000022e -#define REG_USER_SATURATION 0x70000230 - -#define REG_G_ENABLE_PREV 0x7000023e -#define REG_G_ENABLE_PREV_CHG 0x70000240 -#define REG_G_NEW_CFG_SYNC 0x7000024a -#define REG_G_PREV_IN_WIDTH 0x70000250 -#define REG_G_PREV_IN_HEIGHT 0x70000252 -#define REG_G_PREV_IN_XOFFS 0x70000254 -#define REG_G_PREV_IN_YOFFS 0x70000256 -#define REG_G_CAP_IN_WIDTH 0x70000258 -#define REG_G_CAP_IN_HEIGHT 0x7000025a -#define REG_G_CAP_IN_XOFFS 0x7000025c -#define REG_G_CAP_IN_YOFFS 0x7000025e -#define REG_G_INPUTS_CHANGE_REQ 0x70000262 -#define REG_G_ACTIVE_PREV_CFG 0x70000266 -#define REG_G_PREV_CFG_CHG 0x70000268 -#define REG_G_PREV_OPEN_AFTER_CH 0x7000026a - -/* Preview context register sets. n = 0...4. */ -#define PREG(n, x) ((n) * 0x30 + (x)) -#define REG_P_OUT_WIDTH(n) PREG(n, 0x700002a6) -#define REG_P_OUT_HEIGHT(n) PREG(n, 0x700002a8) -#define REG_P_FMT(n) PREG(n, 0x700002aa) -#define REG_P_PVI_MASK(n) PREG(n, 0x700002b4) -#define REG_P_FR_TIME_TYPE(n) PREG(n, 0x700002be) -#define FR_TIME_DYNAMIC 0 -#define FR_TIME_FIXED 1 -#define FR_TIME_FIXED_ACCURATE 2 -#define REG_P_FR_TIME_Q_TYPE(n) PREG(n, 0x700002c0) -#define FR_TIME_Q_DYNAMIC 0 -#define FR_TIME_Q_BEST_FRRATE 1 -#define FR_TIME_Q_BEST_QUALITY 2 - -/* Frame period in 0.1 ms units */ -#define REG_P_MAX_FR_TIME(n) PREG(n, 0x700002c2) -#define REG_P_MIN_FR_TIME(n) PREG(n, 0x700002c4) -#define US_TO_FR_TIME(__t) ((__t) / 100) -#define REG_P_PREV_MIRROR(n) PREG(n, 0x700002d0) -#define REG_P_CAP_MIRROR(n) PREG(n, 0x700002d2) - -#define REG_G_PREVZOOM_IN_WIDTH 0x70000494 -#define REG_G_PREVZOOM_IN_HEIGHT 0x70000496 -#define REG_G_PREVZOOM_IN_XOFFS 0x70000498 -#define REG_G_PREVZOOM_IN_YOFFS 0x7000049a -#define REG_G_CAPZOOM_IN_WIDTH 0x7000049c -#define REG_G_CAPZOOM_IN_HEIGHT 0x7000049e -#define REG_G_CAPZOOM_IN_XOFFS 0x700004a0 -#define REG_G_CAPZOOM_IN_YOFFS 0x700004a2 - -/* n = 0...4 */ -#define REG_USER_SHARPNESS(n) (0x70000a28 + (n) * 0xb6) - -/* Reduce sharpness range for user space API */ -#define SHARPNESS_DIV 8208 -#define TOK_TERM 0xffffffff - -/* - * FIXME: This is copied from s5k6aa, because of no information - * in the S5K4ECGX datasheet. - * H/W register Interface (0xd0000000 - 0xd0000fff) - */ -#define AHB_MSB_ADDR_PTR 0xfcfc -#define GEN_REG_OFFSH 0xd000 -#define REG_CMDWR_ADDRH 0x0028 -#define REG_CMDWR_ADDRL 0x002a -#define REG_CMDRD_ADDRH 0x002c -#define REG_CMDRD_ADDRL 0x002e -#define REG_CMDBUF0_ADDR 0x0f12 - -struct s5k4ecgx_frmsize { - struct v4l2_frmsize_discrete size; - /* Fixed sensor matrix crop rectangle */ - struct v4l2_rect input_window; -}; - -struct regval_list { - u32 addr; - u16 val; -}; - -/* - * TODO: currently only preview is supported and snapshot (capture) - * is not implemented yet - */ -static const struct s5k4ecgx_frmsize s5k4ecgx_prev_sizes[] = { - { - .size = { 176, 144 }, - .input_window = { 0x00, 0x00, 0x928, 0x780 }, - }, { - .size = { 352, 288 }, - .input_window = { 0x00, 0x00, 0x928, 0x780 }, - }, { - .size = { 640, 480 }, - .input_window = { 0x00, 0x00, 0xa00, 0x780 }, - }, { - .size = { 720, 480 }, - .input_window = { 0x00, 0x00, 0xa00, 0x6a8 }, - } -}; - -#define S5K4ECGX_NUM_PREV ARRAY_SIZE(s5k4ecgx_prev_sizes) - -struct s5k4ecgx_pixfmt { - u32 code; - u32 colorspace; - /* REG_TC_PCFG_Format register value */ - u16 reg_p_format; -}; - -/* By default value, output from sensor will be YUV422 0-255 */ -static const struct s5k4ecgx_pixfmt s5k4ecgx_formats[] = { - { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG, 5 }, -}; - -static const char * const s5k4ecgx_supply_names[] = { - /* - * Usually 2.8V is used for analog power (vdda) - * and digital IO (vddio, vdddcore) - */ - "vdda", - "vddio", - "vddcore", - "vddreg", /* The internal s5k4ecgx regulator's supply (1.8V) */ -}; - -#define S5K4ECGX_NUM_SUPPLIES ARRAY_SIZE(s5k4ecgx_supply_names) - -enum s5k4ecgx_gpio_id { - STBY, - RSET, - GPIO_NUM, -}; - -struct s5k4ecgx { - struct v4l2_subdev sd; - struct media_pad pad; - struct v4l2_ctrl_handler handler; - - struct s5k4ecgx_platform_data *pdata; - const struct s5k4ecgx_pixfmt *curr_pixfmt; - const struct s5k4ecgx_frmsize *curr_frmsize; - struct mutex lock; - u8 streaming; - u8 set_params; - - struct regulator_bulk_data supplies[S5K4ECGX_NUM_SUPPLIES]; - struct s5k4ecgx_gpio gpio[GPIO_NUM]; -}; - -static inline struct s5k4ecgx *to_s5k4ecgx(struct v4l2_subdev *sd) -{ - return container_of(sd, struct s5k4ecgx, sd); -} - -static int s5k4ecgx_i2c_read(struct i2c_client *client, u16 addr, u16 *val) -{ - u8 wbuf[2] = { addr >> 8, addr & 0xff }; - struct i2c_msg msg[2]; - u8 rbuf[2]; - int ret; - - msg[0].addr = client->addr; - msg[0].flags = 0; - msg[0].len = 2; - msg[0].buf = wbuf; - - msg[1].addr = client->addr; - msg[1].flags = I2C_M_RD; - msg[1].len = 2; - msg[1].buf = rbuf; - - ret = i2c_transfer(client->adapter, msg, 2); - *val = be16_to_cpu(*((__be16 *)rbuf)); - - v4l2_dbg(4, debug, client, "i2c_read: 0x%04X : 0x%04x\n", addr, *val); - - return ret == 2 ? 0 : ret; -} - -static int s5k4ecgx_i2c_write(struct i2c_client *client, u16 addr, u16 val) -{ - u8 buf[4] = { addr >> 8, addr & 0xff, val >> 8, val & 0xff }; - - int ret = i2c_master_send(client, buf, 4); - v4l2_dbg(4, debug, client, "i2c_write: 0x%04x : 0x%04x\n", addr, val); - - return ret == 4 ? 0 : ret; -} - -static int s5k4ecgx_write(struct i2c_client *client, u32 addr, u16 val) -{ - u16 high = addr >> 16, low = addr & 0xffff; - int ret; - - v4l2_dbg(3, debug, client, "write: 0x%08x : 0x%04x\n", addr, val); - - ret = s5k4ecgx_i2c_write(client, REG_CMDWR_ADDRH, high); - if (!ret) - ret = s5k4ecgx_i2c_write(client, REG_CMDWR_ADDRL, low); - if (!ret) - ret = s5k4ecgx_i2c_write(client, REG_CMDBUF0_ADDR, val); - - return ret; -} - -static int s5k4ecgx_read(struct i2c_client *client, u32 addr, u16 *val) -{ - u16 high = addr >> 16, low = addr & 0xffff; - int ret; - - ret = s5k4ecgx_i2c_write(client, REG_CMDRD_ADDRH, high); - if (!ret) - ret = s5k4ecgx_i2c_write(client, REG_CMDRD_ADDRL, low); - if (!ret) - ret = s5k4ecgx_i2c_read(client, REG_CMDBUF0_ADDR, val); - - return ret; -} - -static int s5k4ecgx_read_fw_ver(struct v4l2_subdev *sd) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - u16 hw_rev, fw_ver = 0; - int ret; - - ret = s5k4ecgx_read(client, REG_FW_VERSION, &fw_ver); - if (ret < 0 || fw_ver != S5K4ECGX_FW_VERSION) { - v4l2_err(sd, "FW version check failed!\n"); - return -ENODEV; - } - - ret = s5k4ecgx_read(client, REG_FW_REVISION, &hw_rev); - if (ret < 0) - return ret; - - v4l2_info(sd, "chip found FW ver: 0x%x, HW rev: 0x%x\n", - fw_ver, hw_rev); - return 0; -} - -static int s5k4ecgx_set_ahb_address(struct v4l2_subdev *sd) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - int ret; - - /* Set APB peripherals start address */ - ret = s5k4ecgx_i2c_write(client, AHB_MSB_ADDR_PTR, GEN_REG_OFFSH); - if (ret < 0) - return ret; - /* - * FIXME: This is copied from s5k6aa, because of no information - * in s5k4ecgx's datasheet. - * sw_reset is activated to put device into idle status - */ - ret = s5k4ecgx_i2c_write(client, 0x0010, 0x0001); - if (ret < 0) - return ret; - - ret = s5k4ecgx_i2c_write(client, 0x1030, 0x0000); - if (ret < 0) - return ret; - /* Halt ARM CPU */ - return s5k4ecgx_i2c_write(client, 0x0014, 0x0001); -} - -#define FW_CRC_SIZE 4 -/* Register address, value are 4, 2 bytes */ -#define FW_RECORD_SIZE 6 -/* - * The firmware has following format: - * < total number of records (4 bytes + 2 bytes padding) N >, - * < record 0 >, ..., < record N - 1 >, < CRC32-CCITT (4-bytes) >, - * where "record" is a 4-byte register address followed by 2-byte - * register value (little endian). - * The firmware generator can be found in following git repository: - * git://git.linaro.org/people/sangwook/fimc-v4l2-app.git - */ -static int s5k4ecgx_load_firmware(struct v4l2_subdev *sd) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - const struct firmware *fw; - const u8 *ptr; - int err, i, regs_num; - u32 addr, crc, crc_file, addr_inc = 0; - u16 val; - - err = request_firmware(&fw, S5K4ECGX_FIRMWARE, sd->v4l2_dev->dev); - if (err) { - v4l2_err(sd, "Failed to read firmware %s\n", S5K4ECGX_FIRMWARE); - return err; - } - regs_num = get_unaligned_le32(fw->data); - - v4l2_dbg(3, debug, sd, "FW: %s size %zu register sets %d\n", - S5K4ECGX_FIRMWARE, fw->size, regs_num); - - regs_num++; /* Add header */ - if (fw->size != regs_num * FW_RECORD_SIZE + FW_CRC_SIZE) { - err = -EINVAL; - goto fw_out; - } - crc_file = get_unaligned_le32(fw->data + regs_num * FW_RECORD_SIZE); - crc = crc32_le(~0, fw->data, regs_num * FW_RECORD_SIZE); - if (crc != crc_file) { - v4l2_err(sd, "FW: invalid crc (%#x:%#x)\n", crc, crc_file); - err = -EINVAL; - goto fw_out; - } - ptr = fw->data + FW_RECORD_SIZE; - for (i = 1; i < regs_num; i++) { - addr = get_unaligned_le32(ptr); - ptr += sizeof(u32); - val = get_unaligned_le16(ptr); - ptr += sizeof(u16); - if (addr - addr_inc != 2) - err = s5k4ecgx_write(client, addr, val); - else - err = s5k4ecgx_i2c_write(client, REG_CMDBUF0_ADDR, val); - if (err) - break; - addr_inc = addr; - } -fw_out: - release_firmware(fw); - return err; -} - -/* Set preview and capture input window */ -static int s5k4ecgx_set_input_window(struct i2c_client *c, - const struct v4l2_rect *r) -{ - int ret; - - ret = s5k4ecgx_write(c, REG_G_PREV_IN_WIDTH, r->width); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_PREV_IN_HEIGHT, r->height); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_PREV_IN_XOFFS, r->left); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_PREV_IN_YOFFS, r->top); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_CAP_IN_WIDTH, r->width); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_CAP_IN_HEIGHT, r->height); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_CAP_IN_XOFFS, r->left); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_CAP_IN_YOFFS, r->top); - - return ret; -} - -/* Set preview and capture zoom input window */ -static int s5k4ecgx_set_zoom_window(struct i2c_client *c, - const struct v4l2_rect *r) -{ - int ret; - - ret = s5k4ecgx_write(c, REG_G_PREVZOOM_IN_WIDTH, r->width); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_PREVZOOM_IN_HEIGHT, r->height); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_PREVZOOM_IN_XOFFS, r->left); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_PREVZOOM_IN_YOFFS, r->top); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_CAPZOOM_IN_WIDTH, r->width); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_CAPZOOM_IN_HEIGHT, r->height); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_CAPZOOM_IN_XOFFS, r->left); - if (!ret) - ret = s5k4ecgx_write(c, REG_G_CAPZOOM_IN_YOFFS, r->top); - - return ret; -} - -static int s5k4ecgx_set_output_framefmt(struct s5k4ecgx *priv) -{ - struct i2c_client *client = v4l2_get_subdevdata(&priv->sd); - int ret; - - ret = s5k4ecgx_write(client, REG_P_OUT_WIDTH(0), - priv->curr_frmsize->size.width); - if (!ret) - ret = s5k4ecgx_write(client, REG_P_OUT_HEIGHT(0), - priv->curr_frmsize->size.height); - if (!ret) - ret = s5k4ecgx_write(client, REG_P_FMT(0), - priv->curr_pixfmt->reg_p_format); - return ret; -} - -static int s5k4ecgx_init_sensor(struct v4l2_subdev *sd) -{ - int ret; - - ret = s5k4ecgx_set_ahb_address(sd); - - /* The delay is from manufacturer's settings */ - msleep(100); - - if (!ret) - ret = s5k4ecgx_load_firmware(sd); - if (ret) - v4l2_err(sd, "Failed to write initial settings\n"); - - return ret; -} - -static int s5k4ecgx_gpio_set_value(struct s5k4ecgx *priv, int id, u32 val) -{ - if (!gpio_is_valid(priv->gpio[id].gpio)) - return 0; - gpio_set_value(priv->gpio[id].gpio, val); - - return 1; -} - -static int __s5k4ecgx_power_on(struct s5k4ecgx *priv) -{ - int ret; - - ret = regulator_bulk_enable(S5K4ECGX_NUM_SUPPLIES, priv->supplies); - if (ret) - return ret; - usleep_range(30, 50); - - /* The polarity of STBY is controlled by TSP */ - if (s5k4ecgx_gpio_set_value(priv, STBY, priv->gpio[STBY].level)) - usleep_range(30, 50); - - if (s5k4ecgx_gpio_set_value(priv, RSET, priv->gpio[RSET].level)) - usleep_range(30, 50); - - return 0; -} - -static int __s5k4ecgx_power_off(struct s5k4ecgx *priv) -{ - if (s5k4ecgx_gpio_set_value(priv, RSET, !priv->gpio[RSET].level)) - usleep_range(30, 50); - - if (s5k4ecgx_gpio_set_value(priv, STBY, !priv->gpio[STBY].level)) - usleep_range(30, 50); - - priv->streaming = 0; - - return regulator_bulk_disable(S5K4ECGX_NUM_SUPPLIES, priv->supplies); -} - -/* Find nearest matching image pixel size. */ -static int s5k4ecgx_try_frame_size(struct v4l2_mbus_framefmt *mf, - const struct s5k4ecgx_frmsize **size) -{ - unsigned int min_err = ~0; - int i = ARRAY_SIZE(s5k4ecgx_prev_sizes); - const struct s5k4ecgx_frmsize *fsize = &s5k4ecgx_prev_sizes[0], - *match = NULL; - - while (i--) { - int err = abs(fsize->size.width - mf->width) - + abs(fsize->size.height - mf->height); - if (err < min_err) { - min_err = err; - match = fsize; - } - fsize++; - } - if (match) { - mf->width = match->size.width; - mf->height = match->size.height; - if (size) - *size = match; - return 0; - } - - return -EINVAL; -} - -static int s5k4ecgx_enum_mbus_code(struct v4l2_subdev *sd, - struct v4l2_subdev_state *sd_state, - struct v4l2_subdev_mbus_code_enum *code) -{ - if (code->index >= ARRAY_SIZE(s5k4ecgx_formats)) - return -EINVAL; - code->code = s5k4ecgx_formats[code->index].code; - - return 0; -} - -static int s5k4ecgx_get_fmt(struct v4l2_subdev *sd, - struct v4l2_subdev_state *sd_state, - struct v4l2_subdev_format *fmt) -{ - struct s5k4ecgx *priv = to_s5k4ecgx(sd); - struct v4l2_mbus_framefmt *mf; - - if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { - if (sd_state) { - mf = v4l2_subdev_get_try_format(sd, sd_state, 0); - fmt->format = *mf; - } - return 0; - } - - mf = &fmt->format; - - mutex_lock(&priv->lock); - mf->width = priv->curr_frmsize->size.width; - mf->height = priv->curr_frmsize->size.height; - mf->code = priv->curr_pixfmt->code; - mf->colorspace = priv->curr_pixfmt->colorspace; - mf->field = V4L2_FIELD_NONE; - mutex_unlock(&priv->lock); - - return 0; -} - -static const struct s5k4ecgx_pixfmt *s5k4ecgx_try_fmt(struct v4l2_subdev *sd, - struct v4l2_mbus_framefmt *mf) -{ - int i = ARRAY_SIZE(s5k4ecgx_formats); - - while (--i) - if (mf->code == s5k4ecgx_formats[i].code) - break; - mf->code = s5k4ecgx_formats[i].code; - - return &s5k4ecgx_formats[i]; -} - -static int s5k4ecgx_set_fmt(struct v4l2_subdev *sd, - struct v4l2_subdev_state *sd_state, - struct v4l2_subdev_format *fmt) -{ - struct s5k4ecgx *priv = to_s5k4ecgx(sd); - const struct s5k4ecgx_frmsize *fsize = NULL; - const struct s5k4ecgx_pixfmt *pf; - struct v4l2_mbus_framefmt *mf; - int ret = 0; - - pf = s5k4ecgx_try_fmt(sd, &fmt->format); - s5k4ecgx_try_frame_size(&fmt->format, &fsize); - fmt->format.colorspace = V4L2_COLORSPACE_JPEG; - fmt->format.field = V4L2_FIELD_NONE; - - if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { - if (sd_state) { - mf = v4l2_subdev_get_try_format(sd, sd_state, 0); - *mf = fmt->format; - } - return 0; - } - - mutex_lock(&priv->lock); - if (!priv->streaming) { - priv->curr_frmsize = fsize; - priv->curr_pixfmt = pf; - priv->set_params = 1; - } else { - ret = -EBUSY; - } - mutex_unlock(&priv->lock); - - return ret; -} - -static const struct v4l2_subdev_pad_ops s5k4ecgx_pad_ops = { - .enum_mbus_code = s5k4ecgx_enum_mbus_code, - .get_fmt = s5k4ecgx_get_fmt, - .set_fmt = s5k4ecgx_set_fmt, -}; - -/* - * V4L2 subdev controls - */ -static int s5k4ecgx_s_ctrl(struct v4l2_ctrl *ctrl) -{ - struct v4l2_subdev *sd = &container_of(ctrl->handler, struct s5k4ecgx, - handler)->sd; - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct s5k4ecgx *priv = to_s5k4ecgx(sd); - unsigned int i; - int err = 0; - - v4l2_dbg(1, debug, sd, "ctrl: 0x%x, value: %d\n", ctrl->id, ctrl->val); - - mutex_lock(&priv->lock); - switch (ctrl->id) { - case V4L2_CID_CONTRAST: - err = s5k4ecgx_write(client, REG_USER_CONTRAST, ctrl->val); - break; - - case V4L2_CID_SATURATION: - err = s5k4ecgx_write(client, REG_USER_SATURATION, ctrl->val); - break; - - case V4L2_CID_SHARPNESS: - /* TODO: Revisit, is this setting for all presets ? */ - for (i = 0; i < 4 && !err; i++) - err = s5k4ecgx_write(client, REG_USER_SHARPNESS(i), - ctrl->val * SHARPNESS_DIV); - break; - - case V4L2_CID_BRIGHTNESS: - err = s5k4ecgx_write(client, REG_USER_BRIGHTNESS, ctrl->val); - break; - } - mutex_unlock(&priv->lock); - if (err < 0) - v4l2_err(sd, "Failed to write s_ctrl err %d\n", err); - - return err; -} - -static const struct v4l2_ctrl_ops s5k4ecgx_ctrl_ops = { - .s_ctrl = s5k4ecgx_s_ctrl, -}; - -/* - * Reading s5k4ecgx version information - */ -static int s5k4ecgx_registered(struct v4l2_subdev *sd) -{ - int ret; - struct s5k4ecgx *priv = to_s5k4ecgx(sd); - - mutex_lock(&priv->lock); - ret = __s5k4ecgx_power_on(priv); - if (!ret) { - ret = s5k4ecgx_read_fw_ver(sd); - __s5k4ecgx_power_off(priv); - } - mutex_unlock(&priv->lock); - - return ret; -} - -/* - * V4L2 subdev internal operations - */ -static int s5k4ecgx_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) -{ - struct v4l2_mbus_framefmt *mf = v4l2_subdev_get_try_format(sd, - fh->state, - 0); - - mf->width = s5k4ecgx_prev_sizes[0].size.width; - mf->height = s5k4ecgx_prev_sizes[0].size.height; - mf->code = s5k4ecgx_formats[0].code; - mf->colorspace = V4L2_COLORSPACE_JPEG; - mf->field = V4L2_FIELD_NONE; - - return 0; -} - -static const struct v4l2_subdev_internal_ops s5k4ecgx_subdev_internal_ops = { - .registered = s5k4ecgx_registered, - .open = s5k4ecgx_open, -}; - -static int s5k4ecgx_s_power(struct v4l2_subdev *sd, int on) -{ - struct s5k4ecgx *priv = to_s5k4ecgx(sd); - int ret; - - v4l2_dbg(1, debug, sd, "Switching %s\n", on ? "on" : "off"); - - if (on) { - ret = __s5k4ecgx_power_on(priv); - if (ret < 0) - return ret; - /* Time to stabilize sensor */ - msleep(100); - ret = s5k4ecgx_init_sensor(sd); - if (ret < 0) - __s5k4ecgx_power_off(priv); - else - priv->set_params = 1; - } else { - ret = __s5k4ecgx_power_off(priv); - } - - return ret; -} - -static int s5k4ecgx_log_status(struct v4l2_subdev *sd) -{ - v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name); - - return 0; -} - -static const struct v4l2_subdev_core_ops s5k4ecgx_core_ops = { - .s_power = s5k4ecgx_s_power, - .log_status = s5k4ecgx_log_status, -}; - -static int __s5k4ecgx_s_params(struct s5k4ecgx *priv) -{ - struct i2c_client *client = v4l2_get_subdevdata(&priv->sd); - const struct v4l2_rect *crop_rect = &priv->curr_frmsize->input_window; - int ret; - - ret = s5k4ecgx_set_input_window(client, crop_rect); - if (!ret) - ret = s5k4ecgx_set_zoom_window(client, crop_rect); - if (!ret) - ret = s5k4ecgx_write(client, REG_G_INPUTS_CHANGE_REQ, 1); - if (!ret) - ret = s5k4ecgx_write(client, 0x70000a1e, 0x28); - if (!ret) - ret = s5k4ecgx_write(client, 0x70000ad4, 0x3c); - if (!ret) - ret = s5k4ecgx_set_output_framefmt(priv); - if (!ret) - ret = s5k4ecgx_write(client, REG_P_PVI_MASK(0), 0x52); - if (!ret) - ret = s5k4ecgx_write(client, REG_P_FR_TIME_TYPE(0), - FR_TIME_DYNAMIC); - if (!ret) - ret = s5k4ecgx_write(client, REG_P_FR_TIME_Q_TYPE(0), - FR_TIME_Q_BEST_FRRATE); - if (!ret) - ret = s5k4ecgx_write(client, REG_P_MIN_FR_TIME(0), - US_TO_FR_TIME(33300)); - if (!ret) - ret = s5k4ecgx_write(client, REG_P_MAX_FR_TIME(0), - US_TO_FR_TIME(66600)); - if (!ret) - ret = s5k4ecgx_write(client, REG_P_PREV_MIRROR(0), 0); - if (!ret) - ret = s5k4ecgx_write(client, REG_P_CAP_MIRROR(0), 0); - if (!ret) - ret = s5k4ecgx_write(client, REG_G_ACTIVE_PREV_CFG, 0); - if (!ret) - ret = s5k4ecgx_write(client, REG_G_PREV_OPEN_AFTER_CH, 1); - if (!ret) - ret = s5k4ecgx_write(client, REG_G_NEW_CFG_SYNC, 1); - if (!ret) - ret = s5k4ecgx_write(client, REG_G_PREV_CFG_CHG, 1); - - return ret; -} - -static int __s5k4ecgx_s_stream(struct s5k4ecgx *priv, int on) -{ - struct i2c_client *client = v4l2_get_subdevdata(&priv->sd); - int ret; - - if (on && priv->set_params) { - ret = __s5k4ecgx_s_params(priv); - if (ret < 0) - return ret; - priv->set_params = 0; - } - /* - * This enables/disables preview stream only. Capture requests - * are not supported yet. - */ - ret = s5k4ecgx_write(client, REG_G_ENABLE_PREV, on); - if (ret < 0) - return ret; - return s5k4ecgx_write(client, REG_G_ENABLE_PREV_CHG, 1); -} - -static int s5k4ecgx_s_stream(struct v4l2_subdev *sd, int on) -{ - struct s5k4ecgx *priv = to_s5k4ecgx(sd); - int ret = 0; - - v4l2_dbg(1, debug, sd, "Turn streaming %s\n", on ? "on" : "off"); - - mutex_lock(&priv->lock); - - if (priv->streaming == !on) { - ret = __s5k4ecgx_s_stream(priv, on); - if (!ret) - priv->streaming = on & 1; - } - - mutex_unlock(&priv->lock); - return ret; -} - -static const struct v4l2_subdev_video_ops s5k4ecgx_video_ops = { - .s_stream = s5k4ecgx_s_stream, -}; - -static const struct v4l2_subdev_ops s5k4ecgx_ops = { - .core = &s5k4ecgx_core_ops, - .pad = &s5k4ecgx_pad_ops, - .video = &s5k4ecgx_video_ops, -}; - -/* - * GPIO setup - */ -static int s5k4ecgx_config_gpio(int nr, int val, const char *name) -{ - unsigned long flags = val ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW; - int ret; - - if (!gpio_is_valid(nr)) - return 0; - ret = gpio_request_one(nr, flags, name); - if (!ret) - gpio_export(nr, 0); - - return ret; -} - -static void s5k4ecgx_free_gpios(struct s5k4ecgx *priv) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(priv->gpio); i++) { - if (!gpio_is_valid(priv->gpio[i].gpio)) - continue; - gpio_free(priv->gpio[i].gpio); - priv->gpio[i].gpio = -EINVAL; - } -} - -static int s5k4ecgx_config_gpios(struct s5k4ecgx *priv, - const struct s5k4ecgx_platform_data *pdata) -{ - const struct s5k4ecgx_gpio *gpio = &pdata->gpio_stby; - int ret; - - priv->gpio[STBY].gpio = -EINVAL; - priv->gpio[RSET].gpio = -EINVAL; - - ret = s5k4ecgx_config_gpio(gpio->gpio, gpio->level, "S5K4ECGX_STBY"); - - if (ret) { - s5k4ecgx_free_gpios(priv); - return ret; - } - priv->gpio[STBY] = *gpio; - if (gpio_is_valid(gpio->gpio)) - gpio_set_value(gpio->gpio, 0); - - gpio = &pdata->gpio_reset; - - ret = s5k4ecgx_config_gpio(gpio->gpio, gpio->level, "S5K4ECGX_RST"); - if (ret) { - s5k4ecgx_free_gpios(priv); - return ret; - } - priv->gpio[RSET] = *gpio; - if (gpio_is_valid(gpio->gpio)) - gpio_set_value(gpio->gpio, 0); - - return 0; -} - -static int s5k4ecgx_init_v4l2_ctrls(struct s5k4ecgx *priv) -{ - const struct v4l2_ctrl_ops *ops = &s5k4ecgx_ctrl_ops; - struct v4l2_ctrl_handler *hdl = &priv->handler; - int ret; - - ret = v4l2_ctrl_handler_init(hdl, 4); - if (ret) - return ret; - - v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BRIGHTNESS, -208, 127, 1, 0); - v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -127, 127, 1, 0); - v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION, -127, 127, 1, 0); - - /* Sharpness default is 24612, and then (24612/SHARPNESS_DIV) = 2 */ - v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SHARPNESS, -32704/SHARPNESS_DIV, - 24612/SHARPNESS_DIV, 1, 2); - if (hdl->error) { - ret = hdl->error; - v4l2_ctrl_handler_free(hdl); - return ret; - } - priv->sd.ctrl_handler = hdl; - - return 0; -}; - -static int s5k4ecgx_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct s5k4ecgx_platform_data *pdata = client->dev.platform_data; - struct v4l2_subdev *sd; - struct s5k4ecgx *priv; - int ret, i; - - if (pdata == NULL) { - dev_err(&client->dev, "platform data is missing!\n"); - return -EINVAL; - } - - priv = devm_kzalloc(&client->dev, sizeof(struct s5k4ecgx), GFP_KERNEL); - if (!priv) - return -ENOMEM; - - mutex_init(&priv->lock); - priv->streaming = 0; - - sd = &priv->sd; - /* Registering subdev */ - v4l2_i2c_subdev_init(sd, client, &s5k4ecgx_ops); - /* Static name; NEVER use in new drivers! */ - strscpy(sd->name, S5K4ECGX_DRIVER_NAME, sizeof(sd->name)); - - sd->internal_ops = &s5k4ecgx_subdev_internal_ops; - /* Support v4l2 sub-device user space API */ - sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; - - priv->pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; - ret = media_entity_pads_init(&sd->entity, 1, &priv->pad); - if (ret) - return ret; - - ret = s5k4ecgx_config_gpios(priv, pdata); - if (ret) { - dev_err(&client->dev, "Failed to set gpios\n"); - goto out_err1; - } - for (i = 0; i < S5K4ECGX_NUM_SUPPLIES; i++) - priv->supplies[i].supply = s5k4ecgx_supply_names[i]; - - ret = devm_regulator_bulk_get(&client->dev, S5K4ECGX_NUM_SUPPLIES, - priv->supplies); - if (ret) { - dev_err(&client->dev, "Failed to get regulators\n"); - goto out_err2; - } - ret = s5k4ecgx_init_v4l2_ctrls(priv); - if (ret) - goto out_err2; - - priv->curr_pixfmt = &s5k4ecgx_formats[0]; - priv->curr_frmsize = &s5k4ecgx_prev_sizes[0]; - - return 0; - -out_err2: - s5k4ecgx_free_gpios(priv); -out_err1: - media_entity_cleanup(&priv->sd.entity); - - return ret; -} - -static void s5k4ecgx_remove(struct i2c_client *client) -{ - struct v4l2_subdev *sd = i2c_get_clientdata(client); - struct s5k4ecgx *priv = to_s5k4ecgx(sd); - - mutex_destroy(&priv->lock); - s5k4ecgx_free_gpios(priv); - v4l2_device_unregister_subdev(sd); - v4l2_ctrl_handler_free(&priv->handler); - media_entity_cleanup(&sd->entity); -} - -static const struct i2c_device_id s5k4ecgx_id[] = { - { S5K4ECGX_DRIVER_NAME, 0 }, - {} -}; -MODULE_DEVICE_TABLE(i2c, s5k4ecgx_id); - -static struct i2c_driver v4l2_i2c_driver = { - .driver = { - .name = S5K4ECGX_DRIVER_NAME, - }, - .probe = s5k4ecgx_probe, - .remove = s5k4ecgx_remove, - .id_table = s5k4ecgx_id, -}; - -module_i2c_driver(v4l2_i2c_driver); - -MODULE_DESCRIPTION("Samsung S5K4ECGX 5MP SOC camera"); -MODULE_AUTHOR("Sangwook Lee <sangwook.lee@linaro.org>"); -MODULE_AUTHOR("Seok-Young Jang <quartz.jang@samsung.com>"); -MODULE_LICENSE("GPL"); -MODULE_FIRMWARE(S5K4ECGX_FIRMWARE); |