| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Support for OmniVision OV2680 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 <asm/unaligned.h> |
| |
| #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 <linux/io.h> |
| #include <linux/acpi.h> |
| #include "../include/linux/atomisp_gmin_platform.h" |
| |
| #include "ov2680.h" |
| |
| static int h_flag; |
| static int v_flag; |
| static enum atomisp_bayer_order ov2680_bayer_order_mapping[] = { |
| atomisp_bayer_order_bggr, |
| atomisp_bayer_order_grbg, |
| atomisp_bayer_order_gbrg, |
| atomisp_bayer_order_rggb, |
| }; |
| |
| /* i2c read/write stuff */ |
| static int ov2680_read_reg(struct i2c_client *client, |
| int len, u16 reg, u16 *val) |
| { |
| struct i2c_msg msgs[2]; |
| u8 addr_buf[2] = { reg >> 8, reg & 0xff }; |
| u8 data_buf[4] = { 0, }; |
| int ret; |
| |
| if (len > 4) |
| return -EINVAL; |
| |
| msgs[0].addr = client->addr; |
| msgs[0].flags = 0; |
| msgs[0].len = ARRAY_SIZE(addr_buf); |
| msgs[0].buf = addr_buf; |
| |
| msgs[1].addr = client->addr; |
| msgs[1].flags = I2C_M_RD; |
| msgs[1].len = len; |
| msgs[1].buf = &data_buf[4 - len]; |
| |
| ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); |
| if (ret != ARRAY_SIZE(msgs)) { |
| dev_err(&client->dev, "read error: reg=0x%4x: %d\n", reg, ret); |
| return -EIO; |
| } |
| |
| *val = get_unaligned_be32(data_buf); |
| |
| return 0; |
| } |
| |
| static int ov2680_write_reg(struct i2c_client *client, unsigned int len, |
| u16 reg, u16 val) |
| { |
| u8 buf[6]; |
| int ret; |
| |
| if (len == 2) |
| put_unaligned_be16(val << (8 * (4 - len)), buf + 2); |
| else if (len == 1) |
| buf[2] = val; |
| else |
| return -EINVAL; |
| |
| put_unaligned_be16(reg, buf); |
| |
| ret = i2c_master_send(client, buf, len + 2); |
| if (ret != len + 2) { |
| dev_err(&client->dev, "write error %d reg 0x%04x, val 0x%02x: buf sent: %*ph\n", |
| ret, reg, val, len + 2, &buf); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static int ov2680_write_reg_array(struct i2c_client *client, |
| const struct ov2680_reg *reglist) |
| { |
| const struct ov2680_reg *next = reglist; |
| int ret; |
| |
| for (; next->reg != 0; next++) { |
| ret = ov2680_write_reg(client, 1, next->reg, next->val); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int ov2680_g_focal(struct v4l2_subdev *sd, s32 *val) |
| { |
| *val = (OV2680_FOCAL_LENGTH_NUM << 16) | OV2680_FOCAL_LENGTH_DEM; |
| return 0; |
| } |
| |
| static int ov2680_g_fnumber(struct v4l2_subdev *sd, s32 *val) |
| { |
| /* const f number for ov2680 */ |
| |
| *val = (OV2680_F_NUMBER_DEFAULT_NUM << 16) | OV2680_F_NUMBER_DEM; |
| return 0; |
| } |
| |
| static int ov2680_g_fnumber_range(struct v4l2_subdev *sd, s32 *val) |
| { |
| *val = (OV2680_F_NUMBER_DEFAULT_NUM << 24) | |
| (OV2680_F_NUMBER_DEM << 16) | |
| (OV2680_F_NUMBER_DEFAULT_NUM << 8) | OV2680_F_NUMBER_DEM; |
| return 0; |
| } |
| |
| static int ov2680_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val) |
| { |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| |
| dev_dbg(&client->dev, "++++ov2680_g_bin_factor_x\n"); |
| *val = ov2680_res[dev->fmt_idx].bin_factor_x; |
| |
| return 0; |
| } |
| |
| static int ov2680_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val) |
| { |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| |
| *val = ov2680_res[dev->fmt_idx].bin_factor_y; |
| dev_dbg(&client->dev, "++++ov2680_g_bin_factor_y\n"); |
| return 0; |
| } |
| |
| static int ov2680_get_intg_factor(struct i2c_client *client, |
| struct camera_mipi_info *info, |
| const struct ov2680_resolution *res) |
| { |
| struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| struct atomisp_sensor_mode_data *buf = &info->data; |
| unsigned int pix_clk_freq_hz; |
| u16 reg_val; |
| int ret; |
| |
| dev_dbg(&client->dev, "++++ov2680_get_intg_factor\n"); |
| if (!info) |
| return -EINVAL; |
| |
| /* pixel clock */ |
| pix_clk_freq_hz = res->pix_clk_freq * 1000000; |
| |
| 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 = OV2680_COARSE_INTG_TIME_MIN; |
| buf->coarse_integration_time_max_margin = |
| OV2680_COARSE_INTG_TIME_MAX_MARGIN; |
| |
| buf->fine_integration_time_min = OV2680_FINE_INTG_TIME_MIN; |
| buf->fine_integration_time_max_margin = |
| OV2680_FINE_INTG_TIME_MAX_MARGIN; |
| |
| buf->fine_integration_time_def = OV2680_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 = ov2680_read_reg(client, 2, |
| OV2680_HORIZONTAL_START_H, ®_val); |
| if (ret) |
| return ret; |
| buf->crop_horizontal_start = reg_val; |
| |
| ret = ov2680_read_reg(client, 2, |
| OV2680_VERTICAL_START_H, ®_val); |
| if (ret) |
| return ret; |
| buf->crop_vertical_start = reg_val; |
| |
| ret = ov2680_read_reg(client, 2, |
| OV2680_HORIZONTAL_END_H, ®_val); |
| if (ret) |
| return ret; |
| buf->crop_horizontal_end = reg_val; |
| |
| ret = ov2680_read_reg(client, 2, |
| OV2680_VERTICAL_END_H, ®_val); |
| if (ret) |
| return ret; |
| buf->crop_vertical_end = reg_val; |
| |
| ret = ov2680_read_reg(client, 2, |
| OV2680_HORIZONTAL_OUTPUT_SIZE_H, ®_val); |
| if (ret) |
| return ret; |
| buf->output_width = reg_val; |
| |
| ret = ov2680_read_reg(client, 2, |
| OV2680_VERTICAL_OUTPUT_SIZE_H, ®_val); |
| if (ret) |
| return ret; |
| buf->output_height = reg_val; |
| |
| buf->binning_factor_x = res->bin_factor_x ? |
| (res->bin_factor_x * 2) : 1; |
| buf->binning_factor_y = res->bin_factor_y ? |
| (res->bin_factor_y * 2) : 1; |
| return 0; |
| } |
| |
| static long __ov2680_set_exposure(struct v4l2_subdev *sd, int coarse_itg, |
| int gain, int digitgain) |
| |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| u16 vts; |
| int ret, exp_val; |
| |
| dev_dbg(&client->dev, |
| "+++++++__ov2680_set_exposure coarse_itg %d, gain %d, digitgain %d++\n", |
| coarse_itg, gain, digitgain); |
| |
| vts = ov2680_res[dev->fmt_idx].lines_per_frame; |
| |
| /* group hold */ |
| ret = ov2680_write_reg(client, 1, |
| OV2680_GROUP_ACCESS, 0x00); |
| if (ret) { |
| dev_err(&client->dev, "%s: write 0x%02x: error, aborted\n", |
| __func__, OV2680_GROUP_ACCESS); |
| return ret; |
| } |
| |
| /* Increase the VTS to match exposure + MARGIN */ |
| if (coarse_itg > vts - OV2680_INTEGRATION_TIME_MARGIN) |
| vts = (u16)coarse_itg + OV2680_INTEGRATION_TIME_MARGIN; |
| |
| ret = ov2680_write_reg(client, 2, OV2680_TIMING_VTS_H, vts); |
| if (ret) { |
| dev_err(&client->dev, "%s: write 0x%02x: error, aborted\n", |
| __func__, OV2680_TIMING_VTS_H); |
| return ret; |
| } |
| |
| /* set exposure */ |
| |
| /* Lower four bit should be 0*/ |
| exp_val = coarse_itg << 4; |
| ret = ov2680_write_reg(client, 1, |
| OV2680_EXPOSURE_L, exp_val & 0xFF); |
| if (ret) { |
| dev_err(&client->dev, "%s: write 0x%02x: error, aborted\n", |
| __func__, OV2680_EXPOSURE_L); |
| return ret; |
| } |
| |
| ret = ov2680_write_reg(client, 1, |
| OV2680_EXPOSURE_M, (exp_val >> 8) & 0xFF); |
| if (ret) { |
| dev_err(&client->dev, "%s: write 0x%02x: error, aborted\n", |
| __func__, OV2680_EXPOSURE_M); |
| return ret; |
| } |
| |
| ret = ov2680_write_reg(client, 1, |
| OV2680_EXPOSURE_H, (exp_val >> 16) & 0x0F); |
| if (ret) { |
| dev_err(&client->dev, "%s: write 0x%02x: error, aborted\n", |
| __func__, OV2680_EXPOSURE_H); |
| return ret; |
| } |
| |
| /* Analog gain */ |
| ret = ov2680_write_reg(client, 2, OV2680_AGC_H, gain); |
| if (ret) { |
| dev_err(&client->dev, "%s: write 0x%02x: error, aborted\n", |
| __func__, OV2680_AGC_H); |
| return ret; |
| } |
| /* Digital gain */ |
| if (digitgain) { |
| ret = ov2680_write_reg(client, 2, |
| OV2680_MWB_RED_GAIN_H, digitgain); |
| if (ret) { |
| dev_err(&client->dev, |
| "%s: write 0x%02x: error, aborted\n", |
| __func__, OV2680_MWB_RED_GAIN_H); |
| return ret; |
| } |
| |
| ret = ov2680_write_reg(client, 2, |
| OV2680_MWB_GREEN_GAIN_H, digitgain); |
| if (ret) { |
| dev_err(&client->dev, |
| "%s: write 0x%02x: error, aborted\n", |
| __func__, OV2680_MWB_RED_GAIN_H); |
| return ret; |
| } |
| |
| ret = ov2680_write_reg(client, 2, |
| OV2680_MWB_BLUE_GAIN_H, digitgain); |
| if (ret) { |
| dev_err(&client->dev, |
| "%s: write 0x%02x: error, aborted\n", |
| __func__, OV2680_MWB_RED_GAIN_H); |
| return ret; |
| } |
| } |
| |
| /* End group */ |
| ret = ov2680_write_reg(client, 1, |
| OV2680_GROUP_ACCESS, 0x10); |
| if (ret) |
| return ret; |
| |
| /* Delay launch group */ |
| ret = ov2680_write_reg(client, 1, |
| OV2680_GROUP_ACCESS, 0xa0); |
| if (ret) |
| return ret; |
| return ret; |
| } |
| |
| static int ov2680_set_exposure(struct v4l2_subdev *sd, int exposure, |
| int gain, int digitgain) |
| { |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| int ret; |
| |
| mutex_lock(&dev->input_lock); |
| ret = __ov2680_set_exposure(sd, exposure, gain, digitgain); |
| mutex_unlock(&dev->input_lock); |
| |
| return ret; |
| } |
| |
| static long ov2680_s_exposure(struct v4l2_subdev *sd, |
| struct atomisp_exposure *exposure) |
| { |
| u16 coarse_itg = exposure->integration_time[0]; |
| u16 analog_gain = exposure->gain[0]; |
| u16 digital_gain = exposure->gain[1]; |
| |
| /* we should not accept the invalid value below */ |
| if (analog_gain == 0) { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| |
| v4l2_err(client, "%s: invalid value\n", __func__); |
| return -EINVAL; |
| } |
| |
| // EXPOSURE CONTROL DISABLED FOR INITIAL CHECKIN, TUNING DOESN'T WORK |
| return ov2680_set_exposure(sd, coarse_itg, analog_gain, digital_gain); |
| } |
| |
| static long ov2680_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) |
| { |
| switch (cmd) { |
| case ATOMISP_IOC_S_EXPOSURE: |
| return ov2680_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 ov2680_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 = ov2680_read_reg(client, 1, |
| OV2680_EXPOSURE_L, |
| ®_v); |
| if (ret) |
| goto err; |
| |
| ret = ov2680_read_reg(client, 1, |
| OV2680_EXPOSURE_M, |
| ®_v2); |
| if (ret) |
| goto err; |
| |
| reg_v += reg_v2 << 8; |
| ret = ov2680_read_reg(client, 1, |
| OV2680_EXPOSURE_H, |
| ®_v2); |
| if (ret) |
| goto err; |
| |
| *value = reg_v + (((u32)reg_v2 << 16)); |
| err: |
| return ret; |
| } |
| |
| static u32 ov2680_translate_bayer_order(enum atomisp_bayer_order code) |
| { |
| switch (code) { |
| case atomisp_bayer_order_rggb: |
| return MEDIA_BUS_FMT_SRGGB10_1X10; |
| case atomisp_bayer_order_grbg: |
| return MEDIA_BUS_FMT_SGRBG10_1X10; |
| case atomisp_bayer_order_bggr: |
| return MEDIA_BUS_FMT_SBGGR10_1X10; |
| case atomisp_bayer_order_gbrg: |
| return MEDIA_BUS_FMT_SGBRG10_1X10; |
| } |
| return 0; |
| } |
| |
| static int ov2680_v_flip(struct v4l2_subdev *sd, s32 value) |
| { |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| struct camera_mipi_info *ov2680_info = NULL; |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret; |
| u16 val; |
| u8 index; |
| |
| dev_dbg(&client->dev, "@%s: value:%d\n", __func__, value); |
| ret = ov2680_read_reg(client, 1, OV2680_FLIP_REG, &val); |
| if (ret) |
| return ret; |
| if (value) |
| val |= OV2680_FLIP_MIRROR_BIT_ENABLE; |
| else |
| val &= ~OV2680_FLIP_MIRROR_BIT_ENABLE; |
| |
| ret = ov2680_write_reg(client, 1, |
| OV2680_FLIP_REG, val); |
| if (ret) |
| return ret; |
| index = (v_flag > 0 ? OV2680_FLIP_BIT : 0) | (h_flag > 0 ? OV2680_MIRROR_BIT : |
| 0); |
| ov2680_info = v4l2_get_subdev_hostdata(sd); |
| if (ov2680_info) { |
| ov2680_info->raw_bayer_order = ov2680_bayer_order_mapping[index]; |
| dev->format.code = ov2680_translate_bayer_order( |
| ov2680_info->raw_bayer_order); |
| } |
| return ret; |
| } |
| |
| static int ov2680_h_flip(struct v4l2_subdev *sd, s32 value) |
| { |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| struct camera_mipi_info *ov2680_info = NULL; |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret; |
| u16 val; |
| u8 index; |
| |
| dev_dbg(&client->dev, "@%s: value:%d\n", __func__, value); |
| |
| ret = ov2680_read_reg(client, 1, OV2680_MIRROR_REG, &val); |
| if (ret) |
| return ret; |
| if (value) |
| val |= OV2680_FLIP_MIRROR_BIT_ENABLE; |
| else |
| val &= ~OV2680_FLIP_MIRROR_BIT_ENABLE; |
| |
| ret = ov2680_write_reg(client, 1, |
| OV2680_MIRROR_REG, val); |
| if (ret) |
| return ret; |
| index = (v_flag > 0 ? OV2680_FLIP_BIT : 0) | (h_flag > 0 ? OV2680_MIRROR_BIT : |
| 0); |
| ov2680_info = v4l2_get_subdev_hostdata(sd); |
| if (ov2680_info) { |
| ov2680_info->raw_bayer_order = ov2680_bayer_order_mapping[index]; |
| dev->format.code = ov2680_translate_bayer_order( |
| ov2680_info->raw_bayer_order); |
| } |
| return ret; |
| } |
| |
| static int ov2680_s_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct ov2680_device *dev = |
| container_of(ctrl->handler, struct ov2680_device, ctrl_handler); |
| struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); |
| int ret = 0; |
| |
| switch (ctrl->id) { |
| case V4L2_CID_VFLIP: |
| dev_dbg(&client->dev, "%s: CID_VFLIP:%d.\n", |
| __func__, ctrl->val); |
| ret = ov2680_v_flip(&dev->sd, ctrl->val); |
| break; |
| case V4L2_CID_HFLIP: |
| dev_dbg(&client->dev, "%s: CID_HFLIP:%d.\n", |
| __func__, ctrl->val); |
| ret = ov2680_h_flip(&dev->sd, ctrl->val); |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| return ret; |
| } |
| |
| static int ov2680_g_volatile_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct ov2680_device *dev = |
| container_of(ctrl->handler, struct ov2680_device, ctrl_handler); |
| int ret = 0; |
| |
| switch (ctrl->id) { |
| case V4L2_CID_EXPOSURE_ABSOLUTE: |
| ret = ov2680_q_exposure(&dev->sd, &ctrl->val); |
| break; |
| case V4L2_CID_FOCAL_ABSOLUTE: |
| ret = ov2680_g_focal(&dev->sd, &ctrl->val); |
| break; |
| case V4L2_CID_FNUMBER_ABSOLUTE: |
| ret = ov2680_g_fnumber(&dev->sd, &ctrl->val); |
| break; |
| case V4L2_CID_FNUMBER_RANGE: |
| ret = ov2680_g_fnumber_range(&dev->sd, &ctrl->val); |
| break; |
| case V4L2_CID_BIN_FACTOR_HORZ: |
| ret = ov2680_g_bin_factor_x(&dev->sd, &ctrl->val); |
| break; |
| case V4L2_CID_BIN_FACTOR_VERT: |
| ret = ov2680_g_bin_factor_y(&dev->sd, &ctrl->val); |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static const struct v4l2_ctrl_ops ctrl_ops = { |
| .s_ctrl = ov2680_s_ctrl, |
| .g_volatile_ctrl = ov2680_g_volatile_ctrl |
| }; |
| |
| static const struct v4l2_ctrl_config ov2680_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 = OV2680_FOCAL_LENGTH_DEFAULT, |
| .max = OV2680_FOCAL_LENGTH_DEFAULT, |
| .step = 0x01, |
| .def = OV2680_FOCAL_LENGTH_DEFAULT, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_FNUMBER_ABSOLUTE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "f-number", |
| .min = OV2680_F_NUMBER_DEFAULT, |
| .max = OV2680_F_NUMBER_DEFAULT, |
| .step = 0x01, |
| .def = OV2680_F_NUMBER_DEFAULT, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_FNUMBER_RANGE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "f-number range", |
| .min = OV2680_F_NUMBER_RANGE, |
| .max = OV2680_F_NUMBER_RANGE, |
| .step = 0x01, |
| .def = OV2680_F_NUMBER_RANGE, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_BIN_FACTOR_HORZ, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "horizontal binning factor", |
| .min = 0, |
| .max = OV2680_BIN_FACTOR_MAX, |
| .step = 1, |
| .def = 0, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_BIN_FACTOR_VERT, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "vertical binning factor", |
| .min = 0, |
| .max = OV2680_BIN_FACTOR_MAX, |
| .step = 1, |
| .def = 0, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_VFLIP, |
| .type = V4L2_CTRL_TYPE_BOOLEAN, |
| .name = "Flip", |
| .min = 0, |
| .max = 1, |
| .step = 1, |
| .def = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_HFLIP, |
| .type = V4L2_CTRL_TYPE_BOOLEAN, |
| .name = "Mirror", |
| .min = 0, |
| .max = 1, |
| .step = 1, |
| .def = 0, |
| }, |
| }; |
| |
| static int ov2680_init_registers(struct v4l2_subdev *sd) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret; |
| |
| ret = ov2680_write_reg(client, 1, OV2680_SW_RESET, 0x01); |
| ret |= ov2680_write_reg_array(client, ov2680_global_setting); |
| |
| return ret; |
| } |
| |
| static int ov2680_init(struct v4l2_subdev *sd) |
| { |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| |
| int ret; |
| |
| mutex_lock(&dev->input_lock); |
| |
| /* restore settings */ |
| ov2680_res = ov2680_res_preview; |
| N_RES = N_RES_PREVIEW; |
| |
| ret = ov2680_init_registers(sd); |
| |
| mutex_unlock(&dev->input_lock); |
| |
| return ret; |
| } |
| |
| static int power_ctrl(struct v4l2_subdev *sd, bool flag) |
| { |
| int ret = 0; |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| |
| if (!dev || !dev->platform_data) |
| return -ENODEV; |
| |
| dev_dbg(&client->dev, "%s: %s", __func__, flag ? "on" : "off"); |
| |
| if (flag) { |
| ret |= dev->platform_data->v1p8_ctrl(sd, 1); |
| ret |= dev->platform_data->v2p8_ctrl(sd, 1); |
| usleep_range(10000, 15000); |
| } |
| |
| if (!flag || ret) { |
| 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) |
| { |
| int ret; |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| |
| if (!dev || !dev->platform_data) |
| return -ENODEV; |
| |
| /* |
| * The OV2680 documents only one GPIO input (#XSHUTDN), but |
| * existing integrations often wire two (reset/power_down) |
| * because that is the way other sensors work. There is no |
| * way to tell how it is wired internally, so existing |
| * firmwares expose both and we drive them symmetrically. |
| */ |
| if (flag) { |
| ret = dev->platform_data->gpio0_ctrl(sd, 1); |
| usleep_range(10000, 15000); |
| /* Ignore return from second gpio, it may not be there */ |
| dev->platform_data->gpio1_ctrl(sd, 1); |
| usleep_range(10000, 15000); |
| } else { |
| dev->platform_data->gpio1_ctrl(sd, 0); |
| ret = dev->platform_data->gpio0_ctrl(sd, 0); |
| } |
| return ret; |
| } |
| |
| static int power_up(struct v4l2_subdev *sd) |
| { |
| struct ov2680_device *dev = to_ov2680_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, 1); |
| 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 ov2680_device *dev = to_ov2680_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret = 0; |
| |
| h_flag = 0; |
| v_flag = 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 ov2680_s_power(struct v4l2_subdev *sd, int on) |
| { |
| int ret; |
| |
| if (on == 0) { |
| ret = power_down(sd); |
| } else { |
| ret = power_up(sd); |
| if (!ret) |
| return ov2680_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 600 |
| static int distance(struct ov2680_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 ov2680_resolution *tmp_res = NULL; |
| |
| for (i = 0; i < N_RES; i++) { |
| tmp_res = &ov2680_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 != ov2680_res[i].width) |
| continue; |
| if (h != ov2680_res[i].height) |
| continue; |
| |
| return i; |
| } |
| |
| return -1; |
| } |
| |
| static int ov2680_set_fmt(struct v4l2_subdev *sd, |
| struct v4l2_subdev_state *sd_state, |
| struct v4l2_subdev_format *format) |
| { |
| struct v4l2_mbus_framefmt *fmt = &format->format; |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct camera_mipi_info *ov2680_info = NULL; |
| int ret = 0; |
| int idx = 0; |
| |
| dev_dbg(&client->dev, "%s: %s: pad: %d, fmt: %p\n", |
| __func__, |
| (format->which == V4L2_SUBDEV_FORMAT_TRY) ? "try" : "set", |
| format->pad, fmt); |
| |
| if (format->pad) |
| return -EINVAL; |
| |
| if (!fmt) |
| return -EINVAL; |
| |
| ov2680_info = v4l2_get_subdev_hostdata(sd); |
| if (!ov2680_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 = ov2680_res[N_RES - 1].width; |
| fmt->height = ov2680_res[N_RES - 1].height; |
| } else { |
| fmt->width = ov2680_res[idx].width; |
| fmt->height = ov2680_res[idx].height; |
| } |
| fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; |
| if (format->which == V4L2_SUBDEV_FORMAT_TRY) { |
| sd_state->pads->try_fmt = *fmt; |
| mutex_unlock(&dev->input_lock); |
| return 0; |
| } |
| dev->fmt_idx = get_resolution_index(fmt->width, fmt->height); |
| dev_dbg(&client->dev, "%s: Resolution index: %d\n", |
| __func__, dev->fmt_idx); |
| if (dev->fmt_idx == -1) { |
| dev_err(&client->dev, "get resolution fail\n"); |
| mutex_unlock(&dev->input_lock); |
| return -EINVAL; |
| } |
| dev_dbg(&client->dev, "%s: i=%d, w=%d, h=%d\n", |
| __func__, dev->fmt_idx, fmt->width, fmt->height); |
| |
| // IS IT NEEDED? |
| power_up(sd); |
| ret = ov2680_write_reg_array(client, ov2680_res[dev->fmt_idx].regs); |
| if (ret) |
| dev_err(&client->dev, |
| "ov2680 write resolution register err: %d\n", ret); |
| |
| ret = ov2680_get_intg_factor(client, ov2680_info, |
| &ov2680_res[dev->fmt_idx]); |
| if (ret) { |
| dev_err(&client->dev, "failed to get integration factor\n"); |
| goto err; |
| } |
| |
| /* |
| * recall flip functions to avoid flip registers |
| * were overridden by default setting |
| */ |
| if (h_flag) |
| ov2680_h_flip(sd, h_flag); |
| if (v_flag) |
| ov2680_v_flip(sd, v_flag); |
| |
| v4l2_info(client, "\n%s idx %d\n", __func__, dev->fmt_idx); |
| |
| /* |
| * ret = startup(sd); |
| * if (ret) |
| * dev_err(&client->dev, "ov2680 startup err\n"); |
| */ |
| err: |
| mutex_unlock(&dev->input_lock); |
| return ret; |
| } |
| |
| static int ov2680_get_fmt(struct v4l2_subdev *sd, |
| struct v4l2_subdev_state *sd_state, |
| struct v4l2_subdev_format *format) |
| { |
| struct v4l2_mbus_framefmt *fmt = &format->format; |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| |
| if (format->pad) |
| return -EINVAL; |
| |
| if (!fmt) |
| return -EINVAL; |
| |
| fmt->width = ov2680_res[dev->fmt_idx].width; |
| fmt->height = ov2680_res[dev->fmt_idx].height; |
| fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; |
| |
| return 0; |
| } |
| |
| static int ov2680_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 = ov2680_read_reg(client, 1, |
| OV2680_SC_CMMN_CHIP_ID_H, &high); |
| if (ret) { |
| dev_err(&client->dev, "sensor_id_high = 0x%x\n", high); |
| return -ENODEV; |
| } |
| ret = ov2680_read_reg(client, 1, |
| OV2680_SC_CMMN_CHIP_ID_L, &low); |
| id = ((((u16)high) << 8) | (u16)low); |
| |
| if (id != OV2680_ID) { |
| dev_err(&client->dev, "sensor ID error 0x%x\n", id); |
| return -ENODEV; |
| } |
| |
| ret = ov2680_read_reg(client, 1, |
| OV2680_SC_CMMN_SUB_ID, &high); |
| revision = (u8)high & 0x0f; |
| |
| dev_info(&client->dev, "sensor_revision id = 0x%x, rev= %d\n", |
| id, revision); |
| |
| return 0; |
| } |
| |
| static int ov2680_s_stream(struct v4l2_subdev *sd, int enable) |
| { |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret; |
| |
| mutex_lock(&dev->input_lock); |
| if (enable) |
| dev_dbg(&client->dev, "ov2680_s_stream one\n"); |
| else |
| dev_dbg(&client->dev, "ov2680_s_stream off\n"); |
| |
| ret = ov2680_write_reg(client, 1, OV2680_SW_STREAM, |
| enable ? OV2680_START_STREAMING : |
| OV2680_STOP_STREAMING); |
| #if 0 |
| /* restore settings */ |
| ov2680_res = ov2680_res_preview; |
| N_RES = N_RES_PREVIEW; |
| #endif |
| |
| //otp valid at stream on state |
| //if(!dev->otp_data) |
| // dev->otp_data = ov2680_otp_read(sd); |
| |
| mutex_unlock(&dev->input_lock); |
| |
| return ret; |
| } |
| |
| static int ov2680_s_config(struct v4l2_subdev *sd, |
| int irq, void *platform_data) |
| { |
| struct ov2680_device *dev = to_ov2680_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, "ov2680 power-off err.\n"); |
| goto fail_power_off; |
| } |
| |
| ret = power_up(sd); |
| if (ret) { |
| dev_err(&client->dev, "ov2680 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 = ov2680_detect(client); |
| if (ret) { |
| dev_err(&client->dev, "ov2680_detect err s_config.\n"); |
| goto fail_csi_cfg; |
| } |
| |
| /* turn off sensor, after probed */ |
| ret = power_down(sd); |
| if (ret) { |
| dev_err(&client->dev, "ov2680 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 ov2680_g_frame_interval(struct v4l2_subdev *sd, |
| struct v4l2_subdev_frame_interval *interval) |
| { |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| |
| interval->interval.numerator = 1; |
| interval->interval.denominator = ov2680_res[dev->fmt_idx].fps; |
| |
| return 0; |
| } |
| |
| static int ov2680_enum_mbus_code(struct v4l2_subdev *sd, |
| struct v4l2_subdev_state *sd_state, |
| 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 ov2680_enum_frame_size(struct v4l2_subdev *sd, |
| struct v4l2_subdev_state *sd_state, |
| struct v4l2_subdev_frame_size_enum *fse) |
| { |
| int index = fse->index; |
| |
| if (index >= N_RES) |
| return -EINVAL; |
| |
| fse->min_width = ov2680_res[index].width; |
| fse->min_height = ov2680_res[index].height; |
| fse->max_width = ov2680_res[index].width; |
| fse->max_height = ov2680_res[index].height; |
| |
| return 0; |
| } |
| |
| static int ov2680_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) |
| { |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| |
| mutex_lock(&dev->input_lock); |
| *frames = ov2680_res[dev->fmt_idx].skip_frames; |
| mutex_unlock(&dev->input_lock); |
| |
| return 0; |
| } |
| |
| static const struct v4l2_subdev_video_ops ov2680_video_ops = { |
| .s_stream = ov2680_s_stream, |
| .g_frame_interval = ov2680_g_frame_interval, |
| }; |
| |
| static const struct v4l2_subdev_sensor_ops ov2680_sensor_ops = { |
| .g_skip_frames = ov2680_g_skip_frames, |
| }; |
| |
| static const struct v4l2_subdev_core_ops ov2680_core_ops = { |
| .s_power = ov2680_s_power, |
| .ioctl = ov2680_ioctl, |
| }; |
| |
| static const struct v4l2_subdev_pad_ops ov2680_pad_ops = { |
| .enum_mbus_code = ov2680_enum_mbus_code, |
| .enum_frame_size = ov2680_enum_frame_size, |
| .get_fmt = ov2680_get_fmt, |
| .set_fmt = ov2680_set_fmt, |
| }; |
| |
| static const struct v4l2_subdev_ops ov2680_ops = { |
| .core = &ov2680_core_ops, |
| .video = &ov2680_video_ops, |
| .pad = &ov2680_pad_ops, |
| .sensor = &ov2680_sensor_ops, |
| }; |
| |
| static int ov2680_remove(struct i2c_client *client) |
| { |
| struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| struct ov2680_device *dev = to_ov2680_sensor(sd); |
| |
| dev_dbg(&client->dev, "ov2680_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 ov2680_probe(struct i2c_client *client) |
| { |
| struct ov2680_device *dev; |
| int ret; |
| void *pdata; |
| 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, &ov2680_ops); |
| |
| pdata = gmin_camera_platform_data(&dev->sd, |
| ATOMISP_INPUT_FORMAT_RAW_10, |
| atomisp_bayer_order_bggr); |
| if (!pdata) { |
| ret = -EINVAL; |
| goto out_free; |
| } |
| |
| ret = ov2680_s_config(&dev->sd, client->irq, pdata); |
| if (ret) |
| goto out_free; |
| |
| ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA); |
| 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(ov2680_controls)); |
| if (ret) { |
| ov2680_remove(client); |
| return ret; |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(ov2680_controls); i++) |
| v4l2_ctrl_new_custom(&dev->ctrl_handler, &ov2680_controls[i], |
| NULL); |
| |
| if (dev->ctrl_handler.error) { |
| ov2680_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) { |
| ov2680_remove(client); |
| dev_dbg(&client->dev, "+++ remove ov2680\n"); |
| } |
| return ret; |
| out_free: |
| dev_dbg(&client->dev, "+++ out free\n"); |
| v4l2_device_unregister_subdev(&dev->sd); |
| kfree(dev); |
| return ret; |
| } |
| |
| static const struct acpi_device_id ov2680_acpi_match[] = { |
| {"XXOV2680"}, |
| {"OVTI2680"}, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(acpi, ov2680_acpi_match); |
| |
| static struct i2c_driver ov2680_driver = { |
| .driver = { |
| .name = "ov2680", |
| .acpi_match_table = ov2680_acpi_match, |
| }, |
| .probe_new = ov2680_probe, |
| .remove = ov2680_remove, |
| }; |
| module_i2c_driver(ov2680_driver); |
| |
| MODULE_AUTHOR("Jacky Wang <Jacky_wang@ovt.com>"); |
| MODULE_DESCRIPTION("A low-level driver for OmniVision 2680 sensors"); |
| MODULE_LICENSE("GPL"); |