diff options
Diffstat (limited to 'drivers/staging/media/atomisp/i2c/atomisp-ov2722.c')
| -rw-r--r-- | drivers/staging/media/atomisp/i2c/atomisp-ov2722.c | 1271 |
1 files changed, 0 insertions, 1271 deletions
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c deleted file mode 100644 index a362eebd882f..000000000000 --- a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c +++ /dev/null @@ -1,1271 +0,0 @@ -/* - * Support for OmniVision OV2722 1080p HD camera sensor. - * - * Copyright (c) 2013 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 "ov2722.h" - -/* i2c read/write stuff */ -static int ov2722_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 != OV2722_8BIT && data_length != OV2722_16BIT - && data_length != OV2722_32BIT) { - 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 = I2C_MSG_LENGTH; - msg[0].buf = data; - - /* high byte goes out first */ - data[0] = (u8)(reg >> 8); - data[1] = (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 == OV2722_8BIT) - *val = (u8)data[0]; - else if (data_length == OV2722_16BIT) - *val = be16_to_cpu(*(__be16 *)&data[0]); - else - *val = be32_to_cpu(*(__be32 *)&data[0]); - - return 0; -} - -static int ov2722_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 ov2722_write_reg(struct i2c_client *client, u16 data_length, - u16 reg, u16 val) -{ - int ret; - unsigned char data[4] = {0}; - __be16 *wreg = (__be16 *)data; - const u16 len = data_length + sizeof(u16); /* 16-bit address + data */ - - if (data_length != OV2722_8BIT && data_length != OV2722_16BIT) { - dev_err(&client->dev, - "%s error, invalid data_length\n", __func__); - return -EINVAL; - } - - /* high byte goes out first */ - *wreg = cpu_to_be16(reg); - - if (data_length == OV2722_8BIT) { - data[2] = (u8)(val); - } else { - /* OV2722_16BIT */ - __be16 *wdata = (__be16 *)&data[2]; - - *wdata = cpu_to_be16(val); - } - - ret = ov2722_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; -} - -/* - * ov2722_write_reg_array - Initializes a list of OV2722 registers - * @client: i2c driver client structure - * @reglist: list of registers to be written - * - * This function initializes a list of registers. When consecutive addresses - * are found in a row on the list, this function creates a buffer and sends - * consecutive data in a single i2c_transfer(). - * - * __ov2722_flush_reg_array, __ov2722_buf_reg_array() and - * __ov2722_write_reg_is_consecutive() are internal functions to - * ov2722_write_reg_array_fast() and should be not used anywhere else. - * - */ - -static int __ov2722_flush_reg_array(struct i2c_client *client, - struct ov2722_write_ctrl *ctrl) -{ - u16 size; - __be16 *data16 = (void *)&ctrl->buffer.addr; - - if (ctrl->index == 0) - return 0; - - size = sizeof(u16) + ctrl->index; /* 16-bit address + data */ - *data16 = cpu_to_be16(ctrl->buffer.addr); - ctrl->index = 0; - - return ov2722_i2c_write(client, size, (u8 *)&ctrl->buffer); -} - -static int __ov2722_buf_reg_array(struct i2c_client *client, - struct ov2722_write_ctrl *ctrl, - const struct ov2722_reg *next) -{ - int size; - __be16 *data16; - - switch (next->type) { - case OV2722_8BIT: - size = 1; - ctrl->buffer.data[ctrl->index] = (u8)next->val; - break; - case OV2722_16BIT: - size = 2; - data16 = (void *)&ctrl->buffer.data[ctrl->index]; - *data16 = cpu_to_be16((u16)next->val); - break; - default: - return -EINVAL; - } - - /* 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(u16) >= OV2722_MAX_WRITE_BUF_SIZE) - return __ov2722_flush_reg_array(client, ctrl); - - return 0; -} - -static int __ov2722_write_reg_is_consecutive(struct i2c_client *client, - struct ov2722_write_ctrl *ctrl, - const struct ov2722_reg *next) -{ - if (ctrl->index == 0) - return 1; - - return ctrl->buffer.addr + ctrl->index == next->reg; -} - -static int ov2722_write_reg_array(struct i2c_client *client, - const struct ov2722_reg *reglist) -{ - const struct ov2722_reg *next = reglist; - struct ov2722_write_ctrl ctrl; - int err; - - ctrl.index = 0; - for (; next->type != OV2722_TOK_TERM; next++) { - switch (next->type & OV2722_TOK_MASK) { - case OV2722_TOK_DELAY: - err = __ov2722_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 (!__ov2722_write_reg_is_consecutive(client, &ctrl, - next)) { - err = __ov2722_flush_reg_array(client, &ctrl); - if (err) - return err; - } - err = __ov2722_buf_reg_array(client, &ctrl, next); - if (err) { - dev_err(&client->dev, "%s: write error, aborted\n", - __func__); - return err; - } - break; - } - } - - return __ov2722_flush_reg_array(client, &ctrl); -} -static int ov2722_g_focal(struct v4l2_subdev *sd, s32 *val) -{ - *val = (OV2722_FOCAL_LENGTH_NUM << 16) | OV2722_FOCAL_LENGTH_DEM; - return 0; -} - -static int ov2722_g_fnumber(struct v4l2_subdev *sd, s32 *val) -{ - /*const f number for imx*/ - *val = (OV2722_F_NUMBER_DEFAULT_NUM << 16) | OV2722_F_NUMBER_DEM; - return 0; -} - -static int ov2722_g_fnumber_range(struct v4l2_subdev *sd, s32 *val) -{ - *val = (OV2722_F_NUMBER_DEFAULT_NUM << 24) | - (OV2722_F_NUMBER_DEM << 16) | - (OV2722_F_NUMBER_DEFAULT_NUM << 8) | OV2722_F_NUMBER_DEM; - return 0; -} - -static int ov2722_get_intg_factor(struct i2c_client *client, - struct camera_mipi_info *info, - const struct ov2722_resolution *res) -{ - struct v4l2_subdev *sd = i2c_get_clientdata(client); - struct ov2722_device *dev = NULL; - struct atomisp_sensor_mode_data *buf = &info->data; - const unsigned int ext_clk_freq_hz = 19200000; - const unsigned int pll_invariant_div = 10; - unsigned int pix_clk_freq_hz; - u16 pre_pll_clk_div; - u16 pll_multiplier; - u16 op_pix_clk_div; - u16 reg_val; - int ret; - - if (!info) - return -EINVAL; - - dev = to_ov2722_sensor(sd); - - /* pixel clock calculattion */ - ret = ov2722_read_reg(client, OV2722_8BIT, - OV2722_SC_CMMN_PLL_CTRL3, &pre_pll_clk_div); - if (ret) - return ret; - - ret = ov2722_read_reg(client, OV2722_8BIT, - OV2722_SC_CMMN_PLL_MULTIPLIER, &pll_multiplier); - if (ret) - return ret; - - ret = ov2722_read_reg(client, OV2722_8BIT, - OV2722_SC_CMMN_PLL_DEBUG_OPT, &op_pix_clk_div); - if (ret) - return ret; - - pre_pll_clk_div = (pre_pll_clk_div & 0x70) >> 4; - if (0 == pre_pll_clk_div) - return -EINVAL; - - pll_multiplier = pll_multiplier & 0x7f; - op_pix_clk_div = op_pix_clk_div & 0x03; - pix_clk_freq_hz = ext_clk_freq_hz / pre_pll_clk_div * pll_multiplier - * op_pix_clk_div / pll_invariant_div; - - dev->vt_pix_clk_freq_mhz = pix_clk_freq_hz; - buf->vt_pix_clk_freq_mhz = pix_clk_freq_hz; - - /* get integration time */ - buf->coarse_integration_time_min = OV2722_COARSE_INTG_TIME_MIN; - buf->coarse_integration_time_max_margin = - OV2722_COARSE_INTG_TIME_MAX_MARGIN; - - buf->fine_integration_time_min = OV2722_FINE_INTG_TIME_MIN; - buf->fine_integration_time_max_margin = - OV2722_FINE_INTG_TIME_MAX_MARGIN; - - buf->fine_integration_time_def = OV2722_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 = ov2722_read_reg(client, OV2722_16BIT, - OV2722_H_CROP_START_H, ®_val); - if (ret) - return ret; - buf->crop_horizontal_start = reg_val; - - ret = ov2722_read_reg(client, OV2722_16BIT, - OV2722_V_CROP_START_H, ®_val); - if (ret) - return ret; - buf->crop_vertical_start = reg_val; - - ret = ov2722_read_reg(client, OV2722_16BIT, - OV2722_H_CROP_END_H, ®_val); - if (ret) - return ret; - buf->crop_horizontal_end = reg_val; - - ret = ov2722_read_reg(client, OV2722_16BIT, - OV2722_V_CROP_END_H, ®_val); - if (ret) - return ret; - buf->crop_vertical_end = reg_val; - - ret = ov2722_read_reg(client, OV2722_16BIT, - OV2722_H_OUTSIZE_H, ®_val); - if (ret) - return ret; - buf->output_width = reg_val; - - ret = ov2722_read_reg(client, OV2722_16BIT, - OV2722_V_OUTSIZE_H, ®_val); - if (ret) - return ret; - buf->output_height = reg_val; - - 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 __ov2722_set_exposure(struct v4l2_subdev *sd, int coarse_itg, - int gain, int digitgain) - -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct ov2722_device *dev = to_ov2722_sensor(sd); - u16 hts, vts; - int ret; - - dev_dbg(&client->dev, "set_exposure without group hold\n"); - - /* clear VTS_DIFF on manual mode */ - ret = ov2722_write_reg(client, OV2722_16BIT, OV2722_VTS_DIFF_H, 0); - if (ret) - return ret; - - hts = dev->pixels_per_line; - vts = dev->lines_per_frame; - - if ((coarse_itg + OV2722_COARSE_INTG_TIME_MAX_MARGIN) > vts) - vts = coarse_itg + OV2722_COARSE_INTG_TIME_MAX_MARGIN; - - coarse_itg <<= 4; - digitgain <<= 2; - - ret = ov2722_write_reg(client, OV2722_16BIT, - OV2722_VTS_H, vts); - if (ret) - return ret; - - ret = ov2722_write_reg(client, OV2722_16BIT, - OV2722_HTS_H, hts); - if (ret) - return ret; - - /* set exposure */ - ret = ov2722_write_reg(client, OV2722_8BIT, - OV2722_AEC_PK_EXPO_L, - coarse_itg & 0xff); - if (ret) - return ret; - - ret = ov2722_write_reg(client, OV2722_16BIT, - OV2722_AEC_PK_EXPO_H, - (coarse_itg >> 8) & 0xfff); - if (ret) - return ret; - - /* set analog gain */ - ret = ov2722_write_reg(client, OV2722_16BIT, - OV2722_AGC_ADJ_H, gain); - if (ret) - return ret; - - /* set digital gain */ - ret = ov2722_write_reg(client, OV2722_16BIT, - OV2722_MWB_GAIN_R_H, digitgain); - if (ret) - return ret; - - ret = ov2722_write_reg(client, OV2722_16BIT, - OV2722_MWB_GAIN_G_H, digitgain); - if (ret) - return ret; - - ret = ov2722_write_reg(client, OV2722_16BIT, - OV2722_MWB_GAIN_B_H, digitgain); - - return ret; -} - -static int ov2722_set_exposure(struct v4l2_subdev *sd, int exposure, - int gain, int digitgain) -{ - struct ov2722_device *dev = to_ov2722_sensor(sd); - int ret; - - mutex_lock(&dev->input_lock); - ret = __ov2722_set_exposure(sd, exposure, gain, digitgain); - mutex_unlock(&dev->input_lock); - - return ret; -} - -static long ov2722_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 ov2722_set_exposure(sd, exp, gain, digitgain); -} - -static long ov2722_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) -{ - - switch (cmd) { - case ATOMISP_IOC_S_EXPOSURE: - return ov2722_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 ov2722_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 = ov2722_read_reg(client, OV2722_8BIT, - OV2722_AEC_PK_EXPO_L, - ®_v); - if (ret) - goto err; - - ret = ov2722_read_reg(client, OV2722_8BIT, - OV2722_AEC_PK_EXPO_M, - ®_v2); - if (ret) - goto err; - - reg_v += reg_v2 << 8; - ret = ov2722_read_reg(client, OV2722_8BIT, - OV2722_AEC_PK_EXPO_H, - ®_v2); - if (ret) - goto err; - - *value = reg_v + (((u32)reg_v2 << 16)); -err: - return ret; -} - -static int ov2722_g_volatile_ctrl(struct v4l2_ctrl *ctrl) -{ - struct ov2722_device *dev = - container_of(ctrl->handler, struct ov2722_device, ctrl_handler); - int ret = 0; - unsigned int val; - switch (ctrl->id) { - case V4L2_CID_EXPOSURE_ABSOLUTE: - ret = ov2722_q_exposure(&dev->sd, &ctrl->val); - break; - case V4L2_CID_FOCAL_ABSOLUTE: - ret = ov2722_g_focal(&dev->sd, &ctrl->val); - break; - case V4L2_CID_FNUMBER_ABSOLUTE: - ret = ov2722_g_fnumber(&dev->sd, &ctrl->val); - break; - case V4L2_CID_FNUMBER_RANGE: - ret = ov2722_g_fnumber_range(&dev->sd, &ctrl->val); - break; - case V4L2_CID_LINK_FREQ: - val = ov2722_res[dev->fmt_idx].mipi_freq; - if (val == 0) - return -EINVAL; - - ctrl->val = val * 1000; /* To Hz */ - break; - default: - ret = -EINVAL; - } - - return ret; -} - -static const struct v4l2_ctrl_ops ctrl_ops = { - .g_volatile_ctrl = ov2722_g_volatile_ctrl -}; - -static const struct v4l2_ctrl_config ov2722_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 = OV2722_FOCAL_LENGTH_DEFAULT, - .max = OV2722_FOCAL_LENGTH_DEFAULT, - .step = 0x01, - .def = OV2722_FOCAL_LENGTH_DEFAULT, - .flags = 0, - }, - { - .ops = &ctrl_ops, - .id = V4L2_CID_FNUMBER_ABSOLUTE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "f-number", - .min = OV2722_F_NUMBER_DEFAULT, - .max = OV2722_F_NUMBER_DEFAULT, - .step = 0x01, - .def = OV2722_F_NUMBER_DEFAULT, - .flags = 0, - }, - { - .ops = &ctrl_ops, - .id = V4L2_CID_FNUMBER_RANGE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "f-number range", - .min = OV2722_F_NUMBER_RANGE, - .max = OV2722_F_NUMBER_RANGE, - .step = 0x01, - .def = OV2722_F_NUMBER_RANGE, - .flags = 0, - }, - { - .ops = &ctrl_ops, - .id = V4L2_CID_LINK_FREQ, - .name = "Link Frequency", - .type = V4L2_CTRL_TYPE_INTEGER, - .min = 1, - .max = 1500000 * 1000, - .step = 1, - .def = 1, - .flags = V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY, - }, -}; - -static int ov2722_init(struct v4l2_subdev *sd) -{ - struct ov2722_device *dev = to_ov2722_sensor(sd); - - mutex_lock(&dev->input_lock); - - /* restore settings */ - ov2722_res = ov2722_res_preview; - N_RES = N_RES_PREVIEW; - - mutex_unlock(&dev->input_lock); - - return 0; -} - -static int power_ctrl(struct v4l2_subdev *sd, bool flag) -{ - int ret = -1; - struct ov2722_device *dev = to_ov2722_sensor(sd); - - if (!dev || !dev->platform_data) - return -ENODEV; - - if (flag) { - ret = dev->platform_data->v1p8_ctrl(sd, 1); - if (ret == 0) { - ret = dev->platform_data->v2p8_ctrl(sd, 1); - if (ret) - dev->platform_data->v1p8_ctrl(sd, 0); - } - } 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 ov2722_device *dev = to_ov2722_sensor(sd); - int ret = -1; - - if (!dev || !dev->platform_data) - return -ENODEV; - - /* Note: the GPIO order is asymmetric: always RESET# - * before PWDN# when turning it on or off. - */ - ret = dev->platform_data->gpio0_ctrl(sd, flag); - /* - *ov2722 PWDN# active high when pull down,opposite to the convention - */ - ret |= dev->platform_data->gpio1_ctrl(sd, !flag); - return ret; -} - -static int power_up(struct v4l2_subdev *sd) -{ - struct ov2722_device *dev = to_ov2722_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); - - /* gpio ctrl */ - ret = gpio_ctrl(sd, 1); - if (ret) { - ret = gpio_ctrl(sd, 0); - if (ret) - goto fail_power; - } - - /* flis clock control */ - ret = dev->platform_data->flisclk_ctrl(sd, 1); - if (ret) - goto fail_clk; - - /* according to DS, 20ms is needed between PWDN and i2c access */ - msleep(20); - - 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 ov2722_device *dev = to_ov2722_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; - } - - ret = dev->platform_data->flisclk_ctrl(sd, 0); - if (ret) - dev_err(&client->dev, "flisclk failed\n"); - - /* gpio ctrl */ - ret = gpio_ctrl(sd, 0); - if (ret) { - ret = gpio_ctrl(sd, 0); - if (ret) - dev_err(&client->dev, "gpio failed 2\n"); - } - - /* power control */ - ret = power_ctrl(sd, 0); - if (ret) - dev_err(&client->dev, "vprog failed.\n"); - - return ret; -} - -static int ov2722_s_power(struct v4l2_subdev *sd, int on) -{ - int ret; - if (on == 0) - return power_down(sd); - else { - ret = power_up(sd); - if (!ret) - return ov2722_init(sd); - } - 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 ov2722_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 ov2722_resolution *tmp_res = NULL; - - for (i = 0; i < N_RES; i++) { - tmp_res = &ov2722_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 != ov2722_res[i].width) - continue; - if (h != ov2722_res[i].height) - continue; - - return i; - } - - return -1; -} - -/* TODO: remove it. */ -static int startup(struct v4l2_subdev *sd) -{ - struct ov2722_device *dev = to_ov2722_sensor(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - int ret = 0; - - ret = ov2722_write_reg(client, OV2722_8BIT, - OV2722_SW_RESET, 0x01); - if (ret) { - dev_err(&client->dev, "ov2722 reset err.\n"); - return ret; - } - - ret = ov2722_write_reg_array(client, ov2722_res[dev->fmt_idx].regs); - if (ret) { - dev_err(&client->dev, "ov2722 write register err.\n"); - return ret; - } - - return ret; -} - -static int ov2722_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 ov2722_device *dev = to_ov2722_sensor(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct camera_mipi_info *ov2722_info = NULL; - int ret = 0; - int idx; - if (format->pad) - return -EINVAL; - if (!fmt) - return -EINVAL; - ov2722_info = v4l2_get_subdev_hostdata(sd); - if (!ov2722_info) - return -EINVAL; - - mutex_lock(&dev->input_lock); - idx = nearest_resolution_index(fmt->width, fmt->height); - if (idx == -1) { - /* return the largest resolution */ - fmt->width = ov2722_res[N_RES - 1].width; - fmt->height = ov2722_res[N_RES - 1].height; - } else { - fmt->width = ov2722_res[idx].width; - fmt->height = ov2722_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; - } - - dev->pixels_per_line = ov2722_res[dev->fmt_idx].pixels_per_line; - dev->lines_per_frame = ov2722_res[dev->fmt_idx].lines_per_frame; - - ret = startup(sd); - if (ret) { - int i = 0; - dev_err(&client->dev, "ov2722 startup err, retry to power up\n"); - for (i = 0; i < OV2722_POWER_UP_RETRY_NUM; i++) { - dev_err(&client->dev, - "ov2722 retry to power up %d/%d times, result: ", - i + 1, OV2722_POWER_UP_RETRY_NUM); - power_down(sd); - ret = power_up(sd); - if (ret) { - dev_err(&client->dev, "power up failed, continue\n"); - continue; - } - ret = startup(sd); - if (ret) { - dev_err(&client->dev, " startup FAILED!\n"); - } else { - dev_err(&client->dev, " startup SUCCESS!\n"); - break; - } - } - if (ret) { - dev_err(&client->dev, "ov2722 startup err\n"); - goto err; - } - } - - ret = ov2722_get_intg_factor(client, ov2722_info, - &ov2722_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 ov2722_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 ov2722_device *dev = to_ov2722_sensor(sd); - - if (format->pad) - return -EINVAL; - if (!fmt) - return -EINVAL; - - fmt->width = ov2722_res[dev->fmt_idx].width; - fmt->height = ov2722_res[dev->fmt_idx].height; - fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; - - return 0; -} - -static int ov2722_detect(struct i2c_client *client) -{ - struct i2c_adapter *adapter = client->adapter; - u16 high, low; - int ret; - u16 id; - u8 revision; - - if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) - return -ENODEV; - - ret = ov2722_read_reg(client, OV2722_8BIT, - OV2722_SC_CMMN_CHIP_ID_H, &high); - if (ret) { - dev_err(&client->dev, "sensor_id_high = 0x%x\n", high); - return -ENODEV; - } - ret = ov2722_read_reg(client, OV2722_8BIT, - OV2722_SC_CMMN_CHIP_ID_L, &low); - id = (high << 8) | low; - - if ((id != OV2722_ID) && (id != OV2720_ID)) { - dev_err(&client->dev, "sensor ID error\n"); - return -ENODEV; - } - - ret = ov2722_read_reg(client, OV2722_8BIT, - OV2722_SC_CMMN_SUB_ID, &high); - revision = (u8) high & 0x0f; - - dev_dbg(&client->dev, "sensor_revision = 0x%x\n", revision); - dev_dbg(&client->dev, "detect ov2722 success\n"); - return 0; -} - -static int ov2722_s_stream(struct v4l2_subdev *sd, int enable) -{ - struct ov2722_device *dev = to_ov2722_sensor(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); - int ret; - - mutex_lock(&dev->input_lock); - - ret = ov2722_write_reg(client, OV2722_8BIT, OV2722_SW_STREAM, - enable ? OV2722_START_STREAMING : - OV2722_STOP_STREAMING); - - mutex_unlock(&dev->input_lock); - return ret; -} - -static int ov2722_s_config(struct v4l2_subdev *sd, - int irq, void *platform_data) -{ - struct ov2722_device *dev = to_ov2722_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, "ov2722 power-off err.\n"); - goto fail_power_off; - } - - ret = power_up(sd); - if (ret) { - dev_err(&client->dev, "ov2722 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 = ov2722_detect(client); - if (ret) { - dev_err(&client->dev, "ov2722_detect err s_config.\n"); - goto fail_csi_cfg; - } - - /* turn off sensor, after probed */ - ret = power_down(sd); - if (ret) { - dev_err(&client->dev, "ov2722 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 ov2722_g_frame_interval(struct v4l2_subdev *sd, - struct v4l2_subdev_frame_interval *interval) -{ - struct ov2722_device *dev = to_ov2722_sensor(sd); - - interval->interval.numerator = 1; - interval->interval.denominator = ov2722_res[dev->fmt_idx].fps; - - return 0; -} - -static int ov2722_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 ov2722_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 = ov2722_res[index].width; - fse->min_height = ov2722_res[index].height; - fse->max_width = ov2722_res[index].width; - fse->max_height = ov2722_res[index].height; - - return 0; - -} - - -static int ov2722_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) -{ - struct ov2722_device *dev = to_ov2722_sensor(sd); - - mutex_lock(&dev->input_lock); - *frames = ov2722_res[dev->fmt_idx].skip_frames; - mutex_unlock(&dev->input_lock); - - return 0; -} - -static const struct v4l2_subdev_sensor_ops ov2722_sensor_ops = { - .g_skip_frames = ov2722_g_skip_frames, -}; - -static const struct v4l2_subdev_video_ops ov2722_video_ops = { - .s_stream = ov2722_s_stream, - .g_frame_interval = ov2722_g_frame_interval, -}; - -static const struct v4l2_subdev_core_ops ov2722_core_ops = { - .s_power = ov2722_s_power, - .ioctl = ov2722_ioctl, -}; - -static const struct v4l2_subdev_pad_ops ov2722_pad_ops = { - .enum_mbus_code = ov2722_enum_mbus_code, - .enum_frame_size = ov2722_enum_frame_size, - .get_fmt = ov2722_get_fmt, - .set_fmt = ov2722_set_fmt, -}; - -static const struct v4l2_subdev_ops ov2722_ops = { - .core = &ov2722_core_ops, - .video = &ov2722_video_ops, - .pad = &ov2722_pad_ops, - .sensor = &ov2722_sensor_ops, -}; - -static int ov2722_remove(struct i2c_client *client) -{ - struct v4l2_subdev *sd = i2c_get_clientdata(client); - struct ov2722_device *dev = to_ov2722_sensor(sd); - dev_dbg(&client->dev, "ov2722_remove...\n"); - - dev->platform_data->csi_cfg(sd, 0); - v4l2_ctrl_handler_free(&dev->ctrl_handler); - v4l2_device_unregister_subdev(sd); - - atomisp_gmin_remove_subdev(sd); - - media_entity_cleanup(&dev->sd.entity); - kfree(dev); - - return 0; -} - -static int __ov2722_init_ctrl_handler(struct ov2722_device *dev) -{ - struct v4l2_ctrl_handler *hdl; - unsigned int i; - hdl = &dev->ctrl_handler; - v4l2_ctrl_handler_init(&dev->ctrl_handler, ARRAY_SIZE(ov2722_controls)); - for (i = 0; i < ARRAY_SIZE(ov2722_controls); i++) - v4l2_ctrl_new_custom(&dev->ctrl_handler, &ov2722_controls[i], - NULL); - - dev->link_freq = v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_LINK_FREQ); - - if (dev->ctrl_handler.error || !dev->link_freq) - return dev->ctrl_handler.error; - - dev->sd.ctrl_handler = hdl; - - return 0; -} - -static int ov2722_probe(struct i2c_client *client) -{ - struct ov2722_device *dev; - void *ovpdev; - int ret; - - 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, &ov2722_ops); - - ovpdev = gmin_camera_platform_data(&dev->sd, - ATOMISP_INPUT_FORMAT_RAW_10, - atomisp_bayer_order_grbg); - - ret = ov2722_s_config(&dev->sd, client->irq, ovpdev); - if (ret) - goto out_free; - - ret = __ov2722_init_ctrl_handler(dev); - if (ret) - goto out_ctrl_handler_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 = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad); - if (ret) - ov2722_remove(client); - - return atomisp_register_i2c_module(&dev->sd, ovpdev, RAW_CAMERA); - -out_ctrl_handler_free: - v4l2_ctrl_handler_free(&dev->ctrl_handler); - -out_free: - v4l2_device_unregister_subdev(&dev->sd); - kfree(dev); - return ret; -} - -static const struct acpi_device_id ov2722_acpi_match[] = { - { "INT33FB" }, - {}, -}; -MODULE_DEVICE_TABLE(acpi, ov2722_acpi_match); - -static struct i2c_driver ov2722_driver = { - .driver = { - .name = "ov2722", - .acpi_match_table = ov2722_acpi_match, - }, - .probe_new = ov2722_probe, - .remove = ov2722_remove, -}; -module_i2c_driver(ov2722_driver); - -MODULE_AUTHOR("Wei Liu <wei.liu@intel.com>"); -MODULE_DESCRIPTION("A low-level driver for OmniVision 2722 sensors"); -MODULE_LICENSE("GPL"); |