diff options
Diffstat (limited to 'drivers/staging/media/atomisp/i2c/atomisp-gc2235.c')
| -rw-r--r-- | drivers/staging/media/atomisp/i2c/atomisp-gc2235.c | 1122 |
1 files changed, 0 insertions, 1122 deletions
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c b/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c deleted file mode 100644 index 93f9c618f3d8..000000000000 --- a/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c +++ /dev/null @@ -1,1122 +0,0 @@ -/* - * Support for GalaxyCore GC2235 2M camera sensor. - * - * Copyright (c) 2014 Intel Corporation. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/string.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/kmod.h> -#include <linux/device.h> -#include <linux/delay.h> -#include <linux/slab.h> -#include <linux/i2c.h> -#include <linux/moduleparam.h> -#include <media/v4l2-device.h> -#include "../include/linux/atomisp_gmin_platform.h" -#include <linux/acpi.h> -#include <linux/io.h> - -#include "gc2235.h" - -/* i2c read/write stuff */ -static int gc2235_read_reg(struct i2c_client *client, - u16 data_length, u16 reg, u16 *val) -{ - int err; - struct i2c_msg msg[2]; - unsigned char data[6]; - - if (!client->adapter) { - dev_err(&client->dev, "%s error, no client->adapter\n", - __func__); - return -ENODEV; - } - - if (data_length != GC2235_8BIT) { - dev_err(&client->dev, "%s error, invalid data length\n", - __func__); - return -EINVAL; - } - - memset(msg, 0, sizeof(msg)); - - msg[0].addr = client->addr; - msg[0].flags = 0; - msg[0].len = 1; - msg[0].buf = data; - - /* high byte goes out first */ - data[0] = (u8)(reg & 0xff); - - msg[1].addr = client->addr; - msg[1].len = data_length; - msg[1].flags = I2C_M_RD; - msg[1].buf = data; - - err = i2c_transfer(client->adapter, msg, 2); - if (err != 2) { - if (err >= 0) - err = -EIO; - dev_err(&client->dev, - "read from offset 0x%x error %d", reg, err); - return err; - } - - *val = 0; - /* high byte comes first */ - if (data_length == GC2235_8BIT) - *val = (u8)data[0]; - - return 0; -} - -static int gc2235_i2c_write(struct i2c_client *client, u16 len, u8 *data) -{ - struct i2c_msg msg; - const int num_msg = 1; - int ret; - - msg.addr = client->addr; - msg.flags = 0; - msg.len = len; - msg.buf = data; - ret = i2c_transfer(client->adapter, &msg, 1); - - return ret == num_msg ? 0 : -EIO; -} - -static int gc2235_write_reg(struct i2c_client *client, u16 data_length, - u8 reg, u8 val) -{ - int ret; - unsigned char data[4] = {0}; - const u16 len = data_length + sizeof(u8); /* 16-bit address + data */ - - if (data_length != GC2235_8BIT) { - dev_err(&client->dev, - "%s error, invalid data_length\n", __func__); - return -EINVAL; - } - - /* high byte goes out first */ - data[0] = reg; - data[1] = val; - - ret = gc2235_i2c_write(client, len, data); - if (ret) - dev_err(&client->dev, - "write error: wrote 0x%x to offset 0x%x error %d", - val, reg, ret); - - return ret; -} - -static int __gc2235_flush_reg_array(struct i2c_client *client, - struct gc2235_write_ctrl *ctrl) -{ - u16 size; - - if (ctrl->index == 0) - return 0; - - size = sizeof(u8) + ctrl->index; /* 8-bit address + data */ - ctrl->index = 0; - - return gc2235_i2c_write(client, size, (u8 *)&ctrl->buffer); -} - -static int __gc2235_buf_reg_array(struct i2c_client *client, - struct gc2235_write_ctrl *ctrl, - const struct gc2235_reg *next) -{ - int size; - - if (next->type != GC2235_8BIT) - return -EINVAL; - - size = 1; - ctrl->buffer.data[ctrl->index] = (u8)next->val; - - /* When first item is added, we need to store its starting address */ - if (ctrl->index == 0) - ctrl->buffer.addr = next->reg; - - ctrl->index += size; - - /* - * Buffer cannot guarantee free space for u32? Better flush it to avoid - * possible lack of memory for next item. - */ - if (ctrl->index + sizeof(u8) >= GC2235_MAX_WRITE_BUF_SIZE) - return __gc2235_flush_reg_array(client, ctrl); - - return 0; -} -static int __gc2235_write_reg_is_consecutive(struct i2c_client *client, - struct gc2235_write_ctrl *ctrl, - const struct gc2235_reg *next) -{ - if (ctrl->index == 0) - return 1; - - return ctrl->buffer.addr + ctrl->index == next->reg; -} -static int gc2235_write_reg_array(struct i2c_client *client, - const struct gc2235_reg *reglist) -{ - const struct gc2235_reg *next = reglist; - struct gc2235_write_ctrl ctrl; - int err; - - ctrl.index = 0; - for (; next->type != GC2235_TOK_TERM; next++) { - switch (next->type & GC2235_TOK_MASK) { - case GC2235_TOK_DELAY: - err = __gc2235_flush_reg_array(client, &ctrl); - if (err) - return err; - msleep(next->val); - break; - default: - /* - * If next address is not consecutive, data needs to be - * flushed before proceed. - */ - if (!__gc2235_write_reg_is_consecutive(client, &ctrl, - next)) { - err = __gc2235_flush_reg_array(client, &ctrl); - if (err) - return err; - } - err = __gc2235_buf_reg_array(client, &ctrl, next); - if (err) { - dev_err(&client->dev, "%s: write error, aborted\n", - __func__); - return err; - } - break; - } - } - - return __gc2235_flush_reg_array(client, &ctrl); -} - -static int gc2235_g_focal(struct v4l2_subdev *sd, s32 *val) -{ - *val = (GC2235_FOCAL_LENGTH_NUM << 16) | GC2235_FOCAL_LENGTH_DEM; - return 0; -} - -static int gc2235_g_fnumber(struct v4l2_subdev *sd, s32 *val) -{ - /*const f number for imx*/ - *val = (GC2235_F_NUMBER_DEFAULT_NUM << 16) | GC2235_F_NUMBER_DEM; - return 0; -} - -static int gc2235_g_fnumber_range(struct v4l2_subdev *sd, s32 *val) -{ - *val = (GC2235_F_NUMBER_DEFAULT_NUM << 24) | - (GC2235_F_NUMBER_DEM << 16) | - (GC2235_F_NUMBER_DEFAULT_NUM << 8) | GC2235_F_NUMBER_DEM; - return 0; -} - - -static int gc2235_get_intg_factor(struct i2c_client *client, - struct camera_mipi_info *info, - const struct gc2235_resolution *res) -{ - struct v4l2_subdev *sd = i2c_get_clientdata(client); - struct gc2235_device *dev = to_gc2235_sensor(sd); - struct atomisp_sensor_mode_data *buf = &info->data; - u16 reg_val, reg_val_h, dummy; - int ret; - - if (!info) - return -EINVAL; - - /* pixel clock calculattion */ - buf->vt_pix_clk_freq_mhz = dev->vt_pix_clk_freq_mhz = 30000000; - - /* get integration time */ - buf->coarse_integration_time_min = GC2235_COARSE_INTG_TIME_MIN; - buf->coarse_integration_time_max_margin = - GC2235_COARSE_INTG_TIME_MAX_MARGIN; - - buf->fine_integration_time_min = GC2235_FINE_INTG_TIME_MIN; - buf->fine_integration_time_max_margin = - GC2235_FINE_INTG_TIME_MAX_MARGIN; - - buf->fine_integration_time_def = GC2235_FINE_INTG_TIME_MIN; - buf->frame_length_lines = res->lines_per_frame; - buf->line_length_pck = res->pixels_per_line; - buf->read_mode = res->bin_mode; - - /* get the cropping and output resolution to ISP for this mode. */ - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_H_CROP_START_H, ®_val_h); - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_H_CROP_START_L, ®_val); - if (ret) - return ret; - - buf->crop_horizontal_start = (reg_val_h << 8) | reg_val; - - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_V_CROP_START_H, ®_val_h); - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_V_CROP_START_L, ®_val); - if (ret) - return ret; - - buf->crop_vertical_start = (reg_val_h << 8) | reg_val; - - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_H_OUTSIZE_H, ®_val_h); - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_H_OUTSIZE_L, ®_val); - if (ret) - return ret; - buf->output_width = (reg_val_h << 8) | reg_val; - - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_V_OUTSIZE_H, ®_val_h); - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_V_OUTSIZE_L, ®_val); - if (ret) - return ret; - buf->output_height = (reg_val_h << 8) | reg_val; - - buf->crop_horizontal_end = buf->crop_horizontal_start + - buf->output_width - 1; - buf->crop_vertical_end = buf->crop_vertical_start + - buf->output_height - 1; - - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_HB_H, ®_val_h); - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_HB_L, ®_val); - if (ret) - return ret; - - dummy = (reg_val_h << 8) | reg_val; - - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_SH_DELAY_H, ®_val_h); - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_SH_DELAY_L, ®_val); - -#if 0 - buf->line_length_pck = buf->output_width + 16 + dummy + - (((u16)reg_val_h << 8) | (u16)reg_val) + 4; -#endif - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_VB_H, ®_val_h); - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_VB_L, ®_val); - if (ret) - return ret; - -#if 0 - buf->frame_length_lines = buf->output_height + 32 + - (((u16)reg_val_h << 8) | (u16)reg_val); -#endif - buf->binning_factor_x = res->bin_factor_x ? - res->bin_factor_x : 1; - buf->binning_factor_y = res->bin_factor_y ? - res->bin_factor_y : 1; - return 0; -} - -static long __gc2235_set_exposure(struct v4l2_subdev *sd, int coarse_itg, - int gain, int digitgain) - -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - u16 coarse_integration = (u16)coarse_itg; - int ret = 0; - u16 expo_coarse_h, expo_coarse_l, gain_val = 0xF0, gain_val2 = 0xF0; - expo_coarse_h = coarse_integration >> 8; - expo_coarse_l = coarse_integration & 0xff; - - ret = gc2235_write_reg(client, GC2235_8BIT, - GC2235_EXPOSURE_H, expo_coarse_h); - ret = gc2235_write_reg(client, GC2235_8BIT, - GC2235_EXPOSURE_L, expo_coarse_l); - - if (gain <= 0x58) { - gain_val = 0x40; - gain_val2 = 0x58; - } else if (gain < 256) { - gain_val = 0x40; - gain_val2 = gain; - } else { - gain_val2 = 64 * gain / 256; - gain_val = 0xff; - } - - ret = gc2235_write_reg(client, GC2235_8BIT, - GC2235_GLOBAL_GAIN, (u8)gain_val); - ret = gc2235_write_reg(client, GC2235_8BIT, - GC2235_PRE_GAIN, (u8)gain_val2); - - return ret; -} - - -static int gc2235_set_exposure(struct v4l2_subdev *sd, int exposure, - int gain, int digitgain) -{ - struct gc2235_device *dev = to_gc2235_sensor(sd); - int ret; - - mutex_lock(&dev->input_lock); - ret = __gc2235_set_exposure(sd, exposure, gain, digitgain); - mutex_unlock(&dev->input_lock); - - return ret; -} - -static long gc2235_s_exposure(struct v4l2_subdev *sd, - struct atomisp_exposure *exposure) -{ - int exp = exposure->integration_time[0]; - int gain = exposure->gain[0]; - int digitgain = exposure->gain[1]; - - /* we should not accept the invalid value below. */ - if (gain == 0) { - struct i2c_client *client = v4l2_get_subdevdata(sd); - v4l2_err(client, "%s: invalid value\n", __func__); - return -EINVAL; - } - - return gc2235_set_exposure(sd, exp, gain, digitgain); -} -static long gc2235_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) -{ - switch (cmd) { - case ATOMISP_IOC_S_EXPOSURE: - return gc2235_s_exposure(sd, arg); - default: - return -EINVAL; - } - return 0; -} -/* This returns the exposure time being used. This should only be used - * for filling in EXIF data, not for actual image processing. - */ -static int gc2235_q_exposure(struct v4l2_subdev *sd, s32 *value) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - u16 reg_v, reg_v2; - int ret; - - /* get exposure */ - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_EXPOSURE_L, - ®_v); - if (ret) - goto err; - - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_EXPOSURE_H, - ®_v2); - if (ret) - goto err; - - reg_v += reg_v2 << 8; - - *value = reg_v; -err: - return ret; -} - -static int gc2235_g_volatile_ctrl(struct v4l2_ctrl *ctrl) -{ - struct gc2235_device *dev = - container_of(ctrl->handler, struct gc2235_device, ctrl_handler); - int ret = 0; - - switch (ctrl->id) { - case V4L2_CID_EXPOSURE_ABSOLUTE: - ret = gc2235_q_exposure(&dev->sd, &ctrl->val); - break; - case V4L2_CID_FOCAL_ABSOLUTE: - ret = gc2235_g_focal(&dev->sd, &ctrl->val); - break; - case V4L2_CID_FNUMBER_ABSOLUTE: - ret = gc2235_g_fnumber(&dev->sd, &ctrl->val); - break; - case V4L2_CID_FNUMBER_RANGE: - ret = gc2235_g_fnumber_range(&dev->sd, &ctrl->val); - break; - default: - ret = -EINVAL; - } - - return ret; -} - -static const struct v4l2_ctrl_ops ctrl_ops = { - .g_volatile_ctrl = gc2235_g_volatile_ctrl -}; - -static struct v4l2_ctrl_config gc2235_controls[] = { - { - .ops = &ctrl_ops, - .id = V4L2_CID_EXPOSURE_ABSOLUTE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "exposure", - .min = 0x0, - .max = 0xffff, - .step = 0x01, - .def = 0x00, - .flags = 0, - }, - { - .ops = &ctrl_ops, - .id = V4L2_CID_FOCAL_ABSOLUTE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "focal length", - .min = GC2235_FOCAL_LENGTH_DEFAULT, - .max = GC2235_FOCAL_LENGTH_DEFAULT, - .step = 0x01, - .def = GC2235_FOCAL_LENGTH_DEFAULT, - .flags = 0, - }, - { - .ops = &ctrl_ops, - .id = V4L2_CID_FNUMBER_ABSOLUTE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "f-number", - .min = GC2235_F_NUMBER_DEFAULT, - .max = GC2235_F_NUMBER_DEFAULT, - .step = 0x01, - .def = GC2235_F_NUMBER_DEFAULT, - .flags = 0, - }, - { - .ops = &ctrl_ops, - .id = V4L2_CID_FNUMBER_RANGE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "f-number range", - .min = GC2235_F_NUMBER_RANGE, - .max = GC2235_F_NUMBER_RANGE, - .step = 0x01, - .def = GC2235_F_NUMBER_RANGE, - .flags = 0, - }, -}; - -static int __gc2235_init(struct v4l2_subdev *sd) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - - /* restore settings */ - gc2235_res = gc2235_res_preview; - N_RES = N_RES_PREVIEW; - - return gc2235_write_reg_array(client, gc2235_init_settings); -} - -static int is_init; - -static int power_ctrl(struct v4l2_subdev *sd, bool flag) -{ - int ret = -1; - struct gc2235_device *dev = to_gc2235_sensor(sd); - - if (!dev || !dev->platform_data) - return -ENODEV; - - if (flag) { - ret = dev->platform_data->v1p8_ctrl(sd, 1); - usleep_range(60, 90); - if (ret == 0) - ret |= dev->platform_data->v2p8_ctrl(sd, 1); - } else { - ret = dev->platform_data->v1p8_ctrl(sd, 0); - ret |= dev->platform_data->v2p8_ctrl(sd, 0); - } - return ret; -} - -static int gpio_ctrl(struct v4l2_subdev *sd, bool flag) -{ - struct gc2235_device *dev = to_gc2235_sensor(sd); - int ret = -1; - - if (!dev || !dev->platform_data) - return -ENODEV; - - ret |= dev->platform_data->gpio1_ctrl(sd, !flag); - usleep_range(60, 90); - return dev->platform_data->gpio0_ctrl(sd, flag); -} - -static int power_up(struct v4l2_subdev *sd) -{ - struct gc2235_device *dev = to_gc2235_sensor(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - int ret; - - if (!dev->platform_data) { - dev_err(&client->dev, - "no camera_sensor_platform_data"); - return -ENODEV; - } - /* power control */ - ret = power_ctrl(sd, 1); - if (ret) - goto fail_power; - - /* according to DS, at least 5ms is needed between DOVDD and PWDN */ - usleep_range(5000, 6000); - - ret = dev->platform_data->flisclk_ctrl(sd, 1); - if (ret) - goto fail_clk; - usleep_range(5000, 6000); - - /* gpio ctrl */ - ret = gpio_ctrl(sd, 1); - if (ret) { - ret = gpio_ctrl(sd, 1); - if (ret) - goto fail_power; - } - - msleep(5); - return 0; - -fail_clk: - gpio_ctrl(sd, 0); -fail_power: - power_ctrl(sd, 0); - dev_err(&client->dev, "sensor power-up failed\n"); - - return ret; -} - -static int power_down(struct v4l2_subdev *sd) -{ - struct gc2235_device *dev = to_gc2235_sensor(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - int ret = 0; - - if (!dev->platform_data) { - dev_err(&client->dev, - "no camera_sensor_platform_data"); - return -ENODEV; - } - /* gpio ctrl */ - ret = gpio_ctrl(sd, 0); - if (ret) { - ret = gpio_ctrl(sd, 0); - if (ret) - dev_err(&client->dev, "gpio failed 2\n"); - } - - ret = dev->platform_data->flisclk_ctrl(sd, 0); - if (ret) - dev_err(&client->dev, "flisclk failed\n"); - - /* power control */ - ret = power_ctrl(sd, 0); - if (ret) - dev_err(&client->dev, "vprog failed.\n"); - - return ret; -} - -static int gc2235_s_power(struct v4l2_subdev *sd, int on) -{ - int ret; - - if (on == 0) - ret = power_down(sd); - else { - ret = power_up(sd); - if (!ret) - ret = __gc2235_init(sd); - is_init = 1; - } - return ret; -} - -/* - * distance - calculate the distance - * @res: resolution - * @w: width - * @h: height - * - * Get the gap between resolution and w/h. - * res->width/height smaller than w/h wouldn't be considered. - * Returns the value of gap or -1 if fail. - */ -#define LARGEST_ALLOWED_RATIO_MISMATCH 800 -static int distance(struct gc2235_resolution *res, u32 w, u32 h) -{ - unsigned int w_ratio = (res->width << 13) / w; - unsigned int h_ratio; - int match; - - if (h == 0) - return -1; - h_ratio = (res->height << 13) / h; - if (h_ratio == 0) - return -1; - match = abs(((w_ratio << 13) / h_ratio) - 8192); - - if ((w_ratio < 8192) || (h_ratio < 8192) || - (match > LARGEST_ALLOWED_RATIO_MISMATCH)) - return -1; - - return w_ratio + h_ratio; -} - -/* Return the nearest higher resolution index */ -static int nearest_resolution_index(int w, int h) -{ - int i; - int idx = -1; - int dist; - int min_dist = INT_MAX; - struct gc2235_resolution *tmp_res = NULL; - - for (i = 0; i < N_RES; i++) { - tmp_res = &gc2235_res[i]; - dist = distance(tmp_res, w, h); - if (dist == -1) - continue; - if (dist < min_dist) { - min_dist = dist; - idx = i; - } - } - - return idx; -} - -static int get_resolution_index(int w, int h) -{ - int i; - - for (i = 0; i < N_RES; i++) { - if (w != gc2235_res[i].width) - continue; - if (h != gc2235_res[i].height) - continue; - - return i; - } - - return -1; -} - -static int startup(struct v4l2_subdev *sd) -{ - struct gc2235_device *dev = to_gc2235_sensor(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - int ret = 0; - if (is_init == 0) { - /* force gc2235 to do a reset in res change, otherwise it - * can not output normal after switching res. and it is not - * necessary for first time run up after power on, for the sack - * of performance - */ - power_down(sd); - power_up(sd); - gc2235_write_reg_array(client, gc2235_init_settings); - } - - ret = gc2235_write_reg_array(client, gc2235_res[dev->fmt_idx].regs); - if (ret) { - dev_err(&client->dev, "gc2235 write register err.\n"); - return ret; - } - is_init = 0; - - return ret; -} - -static int gc2235_set_fmt(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, - struct v4l2_subdev_format *format) -{ - - struct v4l2_mbus_framefmt *fmt = &format->format; - struct gc2235_device *dev = to_gc2235_sensor(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct camera_mipi_info *gc2235_info = NULL; - int ret = 0; - int idx; - - gc2235_info = v4l2_get_subdev_hostdata(sd); - if (!gc2235_info) - return -EINVAL; - if (format->pad) - return -EINVAL; - if (!fmt) - return -EINVAL; - mutex_lock(&dev->input_lock); - idx = nearest_resolution_index(fmt->width, fmt->height); - if (idx == -1) { - /* return the largest resolution */ - fmt->width = gc2235_res[N_RES - 1].width; - fmt->height = gc2235_res[N_RES - 1].height; - } else { - fmt->width = gc2235_res[idx].width; - fmt->height = gc2235_res[idx].height; - } - fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; - if (format->which == V4L2_SUBDEV_FORMAT_TRY) { - cfg->try_fmt = *fmt; - mutex_unlock(&dev->input_lock); - return 0; - } - - dev->fmt_idx = get_resolution_index(fmt->width, fmt->height); - if (dev->fmt_idx == -1) { - dev_err(&client->dev, "get resolution fail\n"); - mutex_unlock(&dev->input_lock); - return -EINVAL; - } - - ret = startup(sd); - if (ret) { - dev_err(&client->dev, "gc2235 startup err\n"); - goto err; - } - - ret = gc2235_get_intg_factor(client, gc2235_info, - &gc2235_res[dev->fmt_idx]); - if (ret) - dev_err(&client->dev, "failed to get integration_factor\n"); - -err: - mutex_unlock(&dev->input_lock); - return ret; -} - -static int gc2235_get_fmt(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, - struct v4l2_subdev_format *format) -{ - struct v4l2_mbus_framefmt *fmt = &format->format; - struct gc2235_device *dev = to_gc2235_sensor(sd); - - if (format->pad) - return -EINVAL; - - if (!fmt) - return -EINVAL; - - fmt->width = gc2235_res[dev->fmt_idx].width; - fmt->height = gc2235_res[dev->fmt_idx].height; - fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; - - return 0; -} - -static int gc2235_detect(struct i2c_client *client) -{ - struct i2c_adapter *adapter = client->adapter; - u16 high, low; - int ret; - u16 id; - - if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) - return -ENODEV; - - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_SENSOR_ID_H, &high); - if (ret) { - dev_err(&client->dev, "sensor_id_high = 0x%x\n", high); - return -ENODEV; - } - ret = gc2235_read_reg(client, GC2235_8BIT, - GC2235_SENSOR_ID_L, &low); - id = ((high << 8) | low); - - if (id != GC2235_ID) { - dev_err(&client->dev, "sensor ID error, 0x%x\n", id); - return -ENODEV; - } - - dev_info(&client->dev, "detect gc2235 success\n"); - return 0; -} - -static int gc2235_s_stream(struct v4l2_subdev *sd, int enable) -{ - struct gc2235_device *dev = to_gc2235_sensor(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - int ret; - mutex_lock(&dev->input_lock); - - if (enable) - ret = gc2235_write_reg_array(client, gc2235_stream_on); - else - ret = gc2235_write_reg_array(client, gc2235_stream_off); - - mutex_unlock(&dev->input_lock); - return ret; -} - - -static int gc2235_s_config(struct v4l2_subdev *sd, - int irq, void *platform_data) -{ - struct gc2235_device *dev = to_gc2235_sensor(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - int ret = 0; - - if (!platform_data) - return -ENODEV; - - dev->platform_data = - (struct camera_sensor_platform_data *)platform_data; - - mutex_lock(&dev->input_lock); - /* power off the module, then power on it in future - * as first power on by board may not fulfill the - * power on sequqence needed by the module - */ - ret = power_down(sd); - if (ret) { - dev_err(&client->dev, "gc2235 power-off err.\n"); - goto fail_power_off; - } - - ret = power_up(sd); - if (ret) { - dev_err(&client->dev, "gc2235 power-up err.\n"); - goto fail_power_on; - } - - ret = dev->platform_data->csi_cfg(sd, 1); - if (ret) - goto fail_csi_cfg; - - /* config & detect sensor */ - ret = gc2235_detect(client); - if (ret) { - dev_err(&client->dev, "gc2235_detect err s_config.\n"); - goto fail_csi_cfg; - } - - /* turn off sensor, after probed */ - ret = power_down(sd); - if (ret) { - dev_err(&client->dev, "gc2235 power-off err.\n"); - goto fail_csi_cfg; - } - mutex_unlock(&dev->input_lock); - - return 0; - -fail_csi_cfg: - dev->platform_data->csi_cfg(sd, 0); -fail_power_on: - power_down(sd); - dev_err(&client->dev, "sensor power-gating failed\n"); -fail_power_off: - mutex_unlock(&dev->input_lock); - return ret; -} - -static int gc2235_g_frame_interval(struct v4l2_subdev *sd, - struct v4l2_subdev_frame_interval *interval) -{ - struct gc2235_device *dev = to_gc2235_sensor(sd); - - interval->interval.numerator = 1; - interval->interval.denominator = gc2235_res[dev->fmt_idx].fps; - - return 0; -} - -static int gc2235_enum_mbus_code(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, - struct v4l2_subdev_mbus_code_enum *code) -{ - if (code->index >= MAX_FMTS) - return -EINVAL; - - code->code = MEDIA_BUS_FMT_SBGGR10_1X10; - return 0; -} - -static int gc2235_enum_frame_size(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, - struct v4l2_subdev_frame_size_enum *fse) -{ - int index = fse->index; - - if (index >= N_RES) - return -EINVAL; - - fse->min_width = gc2235_res[index].width; - fse->min_height = gc2235_res[index].height; - fse->max_width = gc2235_res[index].width; - fse->max_height = gc2235_res[index].height; - - return 0; - -} - -static int gc2235_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) -{ - struct gc2235_device *dev = to_gc2235_sensor(sd); - - mutex_lock(&dev->input_lock); - *frames = gc2235_res[dev->fmt_idx].skip_frames; - mutex_unlock(&dev->input_lock); - - return 0; -} - -static const struct v4l2_subdev_sensor_ops gc2235_sensor_ops = { - .g_skip_frames = gc2235_g_skip_frames, -}; - -static const struct v4l2_subdev_video_ops gc2235_video_ops = { - .s_stream = gc2235_s_stream, - .g_frame_interval = gc2235_g_frame_interval, -}; - -static const struct v4l2_subdev_core_ops gc2235_core_ops = { - .s_power = gc2235_s_power, - .ioctl = gc2235_ioctl, -}; - -static const struct v4l2_subdev_pad_ops gc2235_pad_ops = { - .enum_mbus_code = gc2235_enum_mbus_code, - .enum_frame_size = gc2235_enum_frame_size, - .get_fmt = gc2235_get_fmt, - .set_fmt = gc2235_set_fmt, -}; - -static const struct v4l2_subdev_ops gc2235_ops = { - .core = &gc2235_core_ops, - .video = &gc2235_video_ops, - .pad = &gc2235_pad_ops, - .sensor = &gc2235_sensor_ops, -}; - -static int gc2235_remove(struct i2c_client *client) -{ - struct v4l2_subdev *sd = i2c_get_clientdata(client); - struct gc2235_device *dev = to_gc2235_sensor(sd); - dev_dbg(&client->dev, "gc2235_remove...\n"); - - dev->platform_data->csi_cfg(sd, 0); - - v4l2_device_unregister_subdev(sd); - media_entity_cleanup(&dev->sd.entity); - v4l2_ctrl_handler_free(&dev->ctrl_handler); - kfree(dev); - - return 0; -} - -static int gc2235_probe(struct i2c_client *client) -{ - struct gc2235_device *dev; - void *gcpdev; - int ret; - unsigned int i; - - dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (!dev) - return -ENOMEM; - - mutex_init(&dev->input_lock); - - dev->fmt_idx = 0; - v4l2_i2c_subdev_init(&(dev->sd), client, &gc2235_ops); - - gcpdev = gmin_camera_platform_data(&dev->sd, - ATOMISP_INPUT_FORMAT_RAW_10, - atomisp_bayer_order_grbg); - - ret = gc2235_s_config(&dev->sd, client->irq, gcpdev); - if (ret) - goto out_free; - - dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; - dev->pad.flags = MEDIA_PAD_FL_SOURCE; - dev->format.code = MEDIA_BUS_FMT_SBGGR10_1X10; - dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; - ret = - v4l2_ctrl_handler_init(&dev->ctrl_handler, - ARRAY_SIZE(gc2235_controls)); - if (ret) { - gc2235_remove(client); - return ret; - } - - for (i = 0; i < ARRAY_SIZE(gc2235_controls); i++) - v4l2_ctrl_new_custom(&dev->ctrl_handler, &gc2235_controls[i], - NULL); - - if (dev->ctrl_handler.error) { - gc2235_remove(client); - return dev->ctrl_handler.error; - } - - /* Use same lock for controls as for everything else. */ - dev->ctrl_handler.lock = &dev->input_lock; - dev->sd.ctrl_handler = &dev->ctrl_handler; - - ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad); - if (ret) - gc2235_remove(client); - - return atomisp_register_i2c_module(&dev->sd, gcpdev, RAW_CAMERA); - -out_free: - v4l2_device_unregister_subdev(&dev->sd); - kfree(dev); - - return ret; -} - -static const struct acpi_device_id gc2235_acpi_match[] = { - { "INT33F8" }, - {}, -}; -MODULE_DEVICE_TABLE(acpi, gc2235_acpi_match); - -static struct i2c_driver gc2235_driver = { - .driver = { - .name = "gc2235", - .acpi_match_table = gc2235_acpi_match, - }, - .probe_new = gc2235_probe, - .remove = gc2235_remove, -}; -module_i2c_driver(gc2235_driver); - -MODULE_AUTHOR("Shuguang Gong <Shuguang.Gong@intel.com>"); -MODULE_DESCRIPTION("A low-level driver for GC2235 sensors"); -MODULE_LICENSE("GPL"); |