| /* |
| * Support for OmniVision ov8858 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| * 02110-1301, USA. |
| * |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/module.h> |
| #include <media/v4l2-device.h> |
| #include <linux/acpi.h> |
| #include "../include/linux/atomisp_gmin_platform.h" |
| #ifdef CONFIG_PLATFORM_BTNS |
| #include "ov8858_btns.h" |
| #else |
| #include "ov8858.h" |
| #endif |
| static int ov8858_i2c_read(struct i2c_client *client, u16 len, u16 addr, |
| u8 *buf) |
| { |
| struct i2c_msg msg[2]; |
| u8 address[2]; |
| int err; |
| |
| if (!client->adapter) { |
| dev_err(&client->dev, "%s error, no adapter\n", __func__); |
| return -ENODEV; |
| } |
| |
| dev_dbg(&client->dev, "%s: len = %d, addr = 0x%04x\n", |
| __func__, len, addr); |
| |
| memset(msg, 0, sizeof(msg)); |
| |
| address[0] = (addr >> 8) & 0xff; |
| address[1] = addr & 0xff; |
| |
| msg[0].addr = client->addr; |
| msg[0].flags = 0; |
| msg[0].len = I2C_MSG_LENGTH; |
| msg[0].buf = address; |
| |
| msg[1].addr = client->addr; |
| msg[1].len = len; |
| msg[1].flags = I2C_M_RD; |
| msg[1].buf = buf; |
| |
| err = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); |
| if (err != 2) { |
| if (err >= 0) |
| err = -EIO; |
| goto error; |
| } |
| |
| return 0; |
| error: |
| dev_err(&client->dev, "reading from address 0x%x error %d", addr, err); |
| return err; |
| } |
| |
| static int ov8858_read_reg(struct i2c_client *client, u16 type, u16 reg, |
| u16 *val) |
| { |
| u8 data[OV8858_SHORT_MAX]; |
| int err; |
| |
| dev_dbg(&client->dev, "%s: type = %d, reg = 0x%04x\n", |
| __func__, type, reg); |
| |
| /* read only 8 and 16 bit values */ |
| if (type != OV8858_8BIT && type != OV8858_16BIT) { |
| dev_err(&client->dev, "%s error, invalid data length\n", |
| __func__); |
| return -EINVAL; |
| } |
| |
| memset(data, 0, sizeof(data)); |
| |
| err = ov8858_i2c_read(client, type, reg, data); |
| if (err) |
| goto error; |
| |
| /* high byte comes first */ |
| if (type == OV8858_8BIT) |
| *val = (u8)data[0]; |
| else |
| *val = data[0] << 8 | data[1]; |
| |
| dev_dbg(&client->dev, "%s: val = 0x%04x\n", __func__, *val); |
| |
| return 0; |
| |
| error: |
| dev_err(&client->dev, "read from offset 0x%x error %d", reg, err); |
| return err; |
| } |
| |
| static int ov8858_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 |
| ov8858_write_reg(struct i2c_client *client, u16 data_length, u16 reg, u16 val) |
| { |
| int ret; |
| unsigned char data[4] = {0}; |
| u16 *wreg; |
| const u16 len = data_length + sizeof(u16); /* 16-bit address + data */ |
| |
| dev_dbg(&client->dev, |
| "%s: data_length = %d, reg = 0x%04x, val = 0x%04x\n", |
| __func__, data_length, reg, val); |
| |
| if (!client->adapter) { |
| dev_err(&client->dev, "%s error, no adapter\n", __func__); |
| return -ENODEV; |
| } |
| |
| if (data_length != OV8858_8BIT && data_length != OV8858_16BIT) { |
| dev_err(&client->dev, "%s error, invalid length\n", __func__); |
| return -EINVAL; |
| } |
| |
| /* high byte goes out first */ |
| wreg = (u16 *)data; |
| *wreg = cpu_to_be16(reg); |
| |
| if (data_length == OV8858_8BIT) { |
| data[2] = (u8)(val); |
| } else { |
| /* OV8858_16BIT */ |
| u16 *wdata = (u16 *)&data[2]; |
| *wdata = be16_to_cpu(val); |
| } |
| |
| ret = ov8858_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; |
| } |
| |
| /* |
| * ov8858_write_reg_array - Initializes a list of 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(). |
| * |
| * __ov8858_flush_reg_array(), __ov8858_buf_reg_array() and |
| * __ov8858_write_reg_is_consecutive() are internal functions to |
| * ov8858_write_reg_array() and should be not used anywhere else. |
| * |
| */ |
| static int __ov8858_flush_reg_array(struct i2c_client *client, |
| struct ov8858_write_ctrl *ctrl) |
| { |
| u16 size; |
| if (ctrl->index == 0) |
| return 0; |
| |
| size = sizeof(u16) + ctrl->index; /* 16-bit address + data */ |
| ctrl->buffer.addr = cpu_to_be16(ctrl->buffer.addr); |
| ctrl->index = 0; |
| |
| return ov8858_i2c_write(client, size, (u8 *)&ctrl->buffer); |
| } |
| |
| static int __ov8858_buf_reg_array(struct i2c_client *client, |
| struct ov8858_write_ctrl *ctrl, |
| const struct ov8858_reg *next) |
| { |
| int size; |
| u16 *data16; |
| |
| switch (next->type) { |
| case OV8858_8BIT: |
| size = 1; |
| ctrl->buffer.data[ctrl->index] = (u8)next->val; |
| break; |
| case OV8858_16BIT: |
| size = 2; |
| data16 = (u16 *)&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->sreg; |
| |
| 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) >= OV8858_MAX_WRITE_BUF_SIZE) |
| __ov8858_flush_reg_array(client, ctrl); |
| |
| return 0; |
| } |
| |
| static int |
| __ov8858_write_reg_is_consecutive(struct i2c_client *client, |
| struct ov8858_write_ctrl *ctrl, |
| const struct ov8858_reg *next) |
| { |
| if (ctrl->index == 0) |
| return 1; |
| |
| return ctrl->buffer.addr + ctrl->index == next->sreg; |
| } |
| |
| static int ov8858_write_reg_array(struct i2c_client *client, |
| const struct ov8858_reg *reglist) |
| { |
| const struct ov8858_reg *next = reglist; |
| struct ov8858_write_ctrl ctrl; |
| int err; |
| |
| ctrl.index = 0; |
| for (; next->type != OV8858_TOK_TERM; next++) { |
| switch (next->type & OV8858_TOK_MASK) { |
| case OV8858_TOK_DELAY: |
| err = __ov8858_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 proceeding |
| */ |
| if (!__ov8858_write_reg_is_consecutive(client, |
| &ctrl, next)) { |
| err = __ov8858_flush_reg_array(client, &ctrl); |
| if (err) |
| return err; |
| } |
| err = __ov8858_buf_reg_array(client, &ctrl, next); |
| if (err) { |
| dev_err(&client->dev, "%s: write error\n", |
| __func__); |
| return err; |
| } |
| break; |
| } |
| } |
| |
| return __ov8858_flush_reg_array(client, &ctrl); |
| } |
| |
| static int __ov8858_min_fps_diff(int fps, |
| const struct ov8858_fps_setting *fps_list) |
| { |
| int diff = INT_MAX; |
| int i; |
| |
| if (fps == 0) |
| return 0; |
| |
| for (i = 0; i < MAX_FPS_OPTIONS_SUPPORTED; i++) { |
| if (!fps_list[i].fps) |
| break; |
| if (abs(fps_list[i].fps - fps) < diff) |
| diff = abs(fps_list[i].fps - fps); |
| } |
| |
| return diff; |
| } |
| |
| static int __ov8858_nearest_fps_index(int fps, |
| const struct ov8858_fps_setting *fps_list) |
| { |
| int fps_index = 0; |
| int i; |
| |
| for (i = 0; i < MAX_FPS_OPTIONS_SUPPORTED; i++) { |
| if (!fps_list[i].fps) |
| break; |
| if (abs(fps_list[i].fps - fps) |
| < abs(fps_list[fps_index].fps - fps)) |
| fps_index = i; |
| } |
| return fps_index; |
| } |
| |
| static int __ov8858_update_frame_timing(struct v4l2_subdev *sd, |
| u16 *hts, u16 *vts) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret; |
| |
| |
| dev_dbg(&client->dev, "%s OV8858_TIMING_HTS=0x%04x\n", |
| __func__, *hts); |
| |
| /* HTS = pixel_per_line / 2 */ |
| ret = ov8858_write_reg(client, OV8858_16BIT, |
| OV8858_TIMING_HTS, *hts >> 1); |
| if (ret) |
| return ret; |
| dev_dbg(&client->dev, "%s OV8858_TIMING_VTS=0x%04x\n", |
| __func__, *vts); |
| |
| return ov8858_write_reg(client, OV8858_16BIT, OV8858_TIMING_VTS, *vts); |
| } |
| |
| static int __ov8858_set_exposure(struct v4l2_subdev *sd, int exposure, int gain, |
| int dig_gain, u16 *hts, u16 *vts) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int exp_val, ret; |
| dev_dbg(&client->dev, "%s, exposure = %d, gain=%d, dig_gain=%d\n", |
| __func__, exposure, gain, dig_gain); |
| |
| if (dev->limit_exposure_flag) { |
| if (exposure > *vts - OV8858_INTEGRATION_TIME_MARGIN) |
| exposure = *vts - OV8858_INTEGRATION_TIME_MARGIN; |
| } else { |
| if (*vts < exposure + OV8858_INTEGRATION_TIME_MARGIN) |
| *vts = (u16) exposure + OV8858_INTEGRATION_TIME_MARGIN; |
| } |
| |
| ret = __ov8858_update_frame_timing(sd, hts, vts); |
| if (ret) |
| return ret; |
| |
| /* For ov8858, the low 4 bits are fraction bits and must be kept 0 */ |
| exp_val = exposure << 4; |
| ret = ov8858_write_reg(client, OV8858_8BIT, |
| OV8858_LONG_EXPO+2, exp_val & 0xFF); |
| if (ret) |
| return ret; |
| |
| ret = ov8858_write_reg(client, OV8858_8BIT, |
| OV8858_LONG_EXPO+1, (exp_val >> 8) & 0xFF); |
| if (ret) |
| return ret; |
| |
| ret = ov8858_write_reg(client, OV8858_8BIT, |
| OV8858_LONG_EXPO, (exp_val >> 16) & 0x0F); |
| if (ret) |
| return ret; |
| |
| /* Digital gain : to all MWB channel gains */ |
| if (dig_gain) { |
| ret = ov8858_write_reg(client, OV8858_16BIT, |
| OV8858_MWB_RED_GAIN_H, dig_gain); |
| if (ret) |
| return ret; |
| |
| ret = ov8858_write_reg(client, OV8858_16BIT, |
| OV8858_MWB_GREEN_GAIN_H, dig_gain); |
| if (ret) |
| return ret; |
| |
| ret = ov8858_write_reg(client, OV8858_16BIT, |
| OV8858_MWB_BLUE_GAIN_H, dig_gain); |
| if (ret) |
| return ret; |
| } |
| |
| ret = ov8858_write_reg(client, OV8858_16BIT, OV8858_LONG_GAIN, |
| gain & 0x07ff); |
| if (ret) |
| return ret; |
| |
| dev->gain = gain; |
| dev->exposure = exposure; |
| dev->digital_gain = dig_gain; |
| |
| return 0; |
| } |
| |
| static int ov8858_set_exposure(struct v4l2_subdev *sd, int exposure, int gain, |
| int dig_gain) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| const struct ov8858_resolution *res; |
| u16 hts, vts; |
| int ret; |
| |
| mutex_lock(&dev->input_lock); |
| |
| /* Validate exposure: cannot exceed 16bit value */ |
| exposure = clamp_t(int, exposure, 0, OV8858_MAX_EXPOSURE_VALUE); |
| |
| /* Validate gain: must not exceed maximum 8bit value */ |
| gain = clamp_t(int, gain, 0, OV8858_MAX_GAIN_VALUE); |
| |
| /* Validate digital gain: must not exceed 12 bit value*/ |
| dig_gain = clamp_t(int, dig_gain, 0, OV8858_MWB_GAIN_MAX); |
| |
| res = &dev->curr_res_table[dev->fmt_idx]; |
| /* |
| * Vendor: HTS reg value is half the total pixel line |
| */ |
| hts = res->fps_options[dev->fps_index].pixels_per_line; |
| vts = res->fps_options[dev->fps_index].lines_per_frame; |
| |
| ret = __ov8858_set_exposure(sd, exposure, gain, dig_gain, &hts, &vts); |
| |
| mutex_unlock(&dev->input_lock); |
| |
| return ret; |
| } |
| |
| /* |
| When exposure gain value set to sensor, the sensor changed value. |
| So we need the function to get real value |
| */ |
| static int ov8858_g_update_exposure(struct v4l2_subdev *sd, |
| struct atomisp_update_exposure *exposure) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int gain = exposure->gain; |
| |
| dev_dbg(&client->dev, "%s: gain: %d, digi_gain: %d\n", __func__, |
| exposure->gain, exposure->digi_gain); |
| exposure->update_digi_gain = dev->digital_gain; |
| /* This real gain value fetching function is provided by vendor */ |
| exposure->update_gain = (((gain & 0x700) >> 8) + 1) * (gain & 0xFF); |
| |
| return 0; |
| } |
| |
| static int ov8858_s_exposure(struct v4l2_subdev *sd, |
| struct atomisp_exposure *exposure) |
| { |
| return ov8858_set_exposure(sd, exposure->integration_time[0], |
| exposure->gain[0], exposure->gain[1]); |
| } |
| |
| static int ov8858_priv_int_data_init(struct v4l2_subdev *sd) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| u32 size = OV8858_OTP_END_ADDR - OV8858_OTP_START_ADDR + 1; |
| int r; |
| u16 isp_ctrl2 = 0; |
| |
| if (!dev->otp_data) { |
| dev->otp_data = devm_kzalloc(&client->dev, size, GFP_KERNEL); |
| if (!dev->otp_data) { |
| dev_err(&client->dev, "%s: can't allocate memory", |
| __func__); |
| r = -ENOMEM; |
| goto error3; |
| } |
| |
| /* Streaming has to be on */ |
| r = ov8858_write_reg(client, OV8858_8BIT, OV8858_STREAM_MODE, |
| 0x01); |
| if (r) |
| goto error2; |
| |
| /* Turn off Dead Pixel Correction */ |
| r = ov8858_read_reg(client, OV8858_8BIT, |
| OV8858_OTP_ISP_CTRL2, &isp_ctrl2); |
| if (r) |
| goto error1; |
| |
| r = ov8858_write_reg(client, OV8858_8BIT, OV8858_OTP_ISP_CTRL2, |
| isp_ctrl2 & ~OV8858_OTP_DPC_ENABLE); |
| if (r) |
| goto error1; |
| |
| /* Enable partial OTP read mode */ |
| r = ov8858_write_reg(client, OV8858_8BIT, OV8858_OTP_MODE_CTRL, |
| OV8858_OTP_MODE_PROGRAM_DISABLE | |
| OV8858_OTP_MODE_MANUAL); |
| if (r) |
| goto error1; |
| |
| /* Set address range of OTP memory to read */ |
| r = ov8858_write_reg(client, OV8858_16BIT, |
| OV8858_OTP_START_ADDR_REG, |
| OV8858_OTP_START_ADDR); |
| if (r) |
| goto error1; |
| |
| r = ov8858_write_reg(client, OV8858_16BIT, |
| OV8858_OTP_END_ADDR_REG, |
| OV8858_OTP_END_ADDR); |
| if (r) |
| goto error1; |
| |
| /* Load the OTP data into the OTP buffer */ |
| r = ov8858_write_reg(client, OV8858_8BIT, OV8858_OTP_LOAD_CTRL, |
| OV8858_OTP_LOAD_ENABLE); |
| if (r) |
| goto error1; |
| |
| /* Wait for the data to load into the buffer */ |
| usleep_range(5000, 5500); |
| |
| /* Read the OTP data from the buffer */ |
| r = ov8858_i2c_read(client, size, OV8858_OTP_START_ADDR, |
| dev->otp_data); |
| if (r) |
| goto error1; |
| |
| /* Turn on Dead Pixel Correction */ |
| r = ov8858_write_reg(client, OV8858_8BIT, OV8858_OTP_ISP_CTRL2, |
| isp_ctrl2 | OV8858_OTP_DPC_ENABLE); |
| if (r) |
| goto error1; |
| |
| /* Stop streaming */ |
| r = ov8858_write_reg(client, 1, OV8858_STREAM_MODE, 0x00); |
| if (r) { |
| dev_err(&client->dev, "%s: cannot turn off streaming\n", |
| __func__); |
| goto error1; |
| } |
| } |
| |
| |
| return 0; |
| |
| error1: |
| /* Turn on Dead Pixel Correction and set streaming off */ |
| ov8858_write_reg(client, OV8858_8BIT, OV8858_OTP_ISP_CTRL2, |
| isp_ctrl2 | OV8858_OTP_DPC_ENABLE); |
| ov8858_write_reg(client, 1, OV8858_STREAM_MODE, 0x00); |
| error2: |
| devm_kfree(&client->dev, dev->otp_data); |
| dev->otp_data = NULL; |
| error3: |
| dev_err(&client->dev, "%s: OTP reading failed\n", __func__); |
| return r; |
| } |
| |
| static int ov8858_g_priv_int_data(struct v4l2_subdev *sd, |
| struct v4l2_private_int_data *priv) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| u32 size = OV8858_OTP_END_ADDR - OV8858_OTP_START_ADDR + 1; |
| int r; |
| |
| mutex_lock(&dev->input_lock); |
| |
| if (!dev->otp_data) { |
| dev_err(&client->dev, "%s: otp data is NULL\n", __func__); |
| mutex_unlock(&dev->input_lock); |
| return -EFAULT; |
| } |
| |
| if (copy_to_user(priv->data, dev->otp_data, |
| min_t(__u32, priv->size, size))) { |
| r = -EFAULT; |
| dev_err(&client->dev, "%s: OTP reading failed\n", __func__); |
| mutex_unlock(&dev->input_lock); |
| return r; |
| } |
| |
| priv->size = size; |
| mutex_unlock(&dev->input_lock); |
| |
| return 0; |
| } |
| |
| static int __ov8858_init(struct v4l2_subdev *sd) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| int ret; |
| dev_dbg(&client->dev, "%s\n", __func__); |
| |
| /* Sets the default FPS */ |
| dev->fps_index = 0; |
| |
| /* Set default exposure values (initially start values) */ |
| dev->exposure = 256; |
| dev->gain = 16; |
| dev->digital_gain = 1024; |
| dev->limit_exposure_flag = false; |
| |
| dev_dbg(&client->dev, "%s: Writing basic settings to ov8858\n", |
| __func__); |
| ret = ov8858_write_reg_array(client, ov8858_BasicSettings); |
| if (ret) |
| return ret; |
| |
| return ov8858_priv_int_data_init(sd); |
| } |
| |
| static int ov8858_init(struct v4l2_subdev *sd, u32 val) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| int ret; |
| |
| mutex_lock(&dev->input_lock); |
| ret = __ov8858_init(sd); |
| mutex_unlock(&dev->input_lock); |
| |
| return ret; |
| } |
| |
| static void ov8858_uninit(struct v4l2_subdev *sd) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| struct v4l2_ctrl *ctrl; |
| dev_dbg(&client->dev, "%s:\n", __func__); |
| |
| dev->exposure = 0; |
| dev->gain = 0; |
| dev->digital_gain = 0; |
| dev->limit_exposure_flag = false; |
| mutex_unlock(&dev->input_lock); |
| ctrl = v4l2_ctrl_find(sd->ctrl_handler, |
| V4L2_CID_EXPOSURE_AUTO_PRIORITY); |
| if (ctrl) |
| v4l2_ctrl_s_ctrl(ctrl, V4L2_EXPOSURE_AUTO); |
| mutex_lock(&dev->input_lock); |
| } |
| |
| static int ov8858_g_comp_delay(struct v4l2_subdev *sd, unsigned int *usec) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| int ret = 0, exposure; |
| u16 vts, data; |
| |
| if (dev->exposure == 0) { |
| ret = ov8858_read_reg(client, OV8858_16BIT, |
| OV8858_LONG_EXPO + 1, &data); |
| if (ret) |
| return ret; |
| exposure = data; |
| exposure >>= 4; |
| } else { |
| exposure = dev->exposure; |
| } |
| |
| ret = ov8858_read_reg(client, OV8858_16BIT, OV8858_TIMING_VTS, &vts); |
| if (ret || vts == 0) |
| vts = OV8858_DEPTH_VTS_CONST; |
| |
| *usec = (exposure * 33333 / vts); |
| if (*usec > OV8858_DEPTH_COMP_CONST) |
| *usec = *usec - OV8858_DEPTH_COMP_CONST; |
| else |
| *usec = OV8858_DEPTH_COMP_CONST; |
| |
| return 0; |
| } |
| |
| static long ov8858_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| switch (cmd) { |
| case ATOMISP_IOC_S_EXPOSURE: |
| return ov8858_s_exposure(sd, (struct atomisp_exposure *)arg); |
| case ATOMISP_IOC_G_SENSOR_PRIV_INT_DATA: |
| return ov8858_g_priv_int_data(sd, arg); |
| case ATOMISP_IOC_G_DEPTH_SYNC_COMP: |
| return ov8858_g_comp_delay(sd, (unsigned int *)arg); |
| case ATOMISP_IOC_G_UPDATE_EXPOSURE: |
| return ov8858_g_update_exposure(sd, |
| (struct atomisp_update_exposure *)arg); |
| default: |
| dev_dbg(&client->dev, "Unhandled command 0x%X\n", cmd); |
| return -EINVAL; |
| } |
| } |
| |
| static int __power_ctrl(struct v4l2_subdev *sd, bool flag) |
| { |
| int ret = 0; |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| |
| if (!dev || !dev->platform_data) |
| return -ENODEV; |
| |
| /* Non-gmin platforms use the legacy callback */ |
| if (dev->platform_data->power_ctrl) |
| return dev->platform_data->power_ctrl(sd, flag); |
| |
| if (dev->platform_data->v1p2_ctrl) { |
| ret = dev->platform_data->v1p2_ctrl(sd, flag); |
| if (ret) { |
| dev_err(&client->dev, |
| "failed to power %s 1.2v power rail\n", |
| flag ? "up" : "down"); |
| return ret; |
| } |
| } |
| |
| if (dev->platform_data->v2p8_ctrl) { |
| ret = dev->platform_data->v2p8_ctrl(sd, flag); |
| if (ret) { |
| dev_err(&client->dev, |
| "failed to power %s 2.8v power rail\n", |
| flag ? "up" : "down"); |
| return ret; |
| } |
| } |
| |
| if (dev->platform_data->v1p8_ctrl) { |
| ret = dev->platform_data->v1p8_ctrl(sd, flag); |
| if (ret) { |
| dev_err(&client->dev, |
| "failed to power %s 1.8v power rail\n", |
| flag ? "up" : "down"); |
| if (dev->platform_data->v2p8_ctrl) |
| dev->platform_data->v2p8_ctrl(sd, 0); |
| return ret; |
| } |
| } |
| |
| if (flag) |
| msleep(20); /* Wait for power lines to stabilize */ |
| return ret; |
| } |
| |
| static int __gpio_ctrl(struct v4l2_subdev *sd, bool flag) |
| { |
| struct i2c_client *client; |
| struct ov8858_device *dev; |
| |
| if (!sd) |
| return -EINVAL; |
| |
| client = v4l2_get_subdevdata(sd); |
| dev = to_ov8858_sensor(sd); |
| |
| if (!client || !dev || !dev->platform_data) |
| return -ENODEV; |
| |
| /* Non-gmin platforms use the legacy callback */ |
| if (dev->platform_data->gpio_ctrl) |
| return dev->platform_data->gpio_ctrl(sd, flag); |
| |
| if (dev->platform_data->gpio0_ctrl) |
| return dev->platform_data->gpio0_ctrl(sd, flag); |
| |
| dev_err(&client->dev, "failed to find platform gpio callback\n"); |
| |
| return -EINVAL; |
| } |
| |
| static int power_up(struct v4l2_subdev *sd) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| int ret; |
| dev_dbg(&client->dev, "%s\n", __func__); |
| |
| /* Enable power */ |
| ret = __power_ctrl(sd, 1); |
| if (ret) { |
| dev_err(&client->dev, "power rail on failed %d.\n", ret); |
| goto fail_power; |
| } |
| |
| /* Enable clock */ |
| ret = dev->platform_data->flisclk_ctrl(sd, 1); |
| if (ret) { |
| dev_err(&client->dev, "flisclk on failed %d\n", ret); |
| goto fail_clk; |
| } |
| |
| /* Release reset */ |
| ret = __gpio_ctrl(sd, 1); |
| if (ret) { |
| dev_err(&client->dev, "gpio on failed %d\n", ret); |
| goto fail_gpio; |
| } |
| |
| /* Minumum delay is 8192 clock cycles before first i2c transaction, |
| * which is 1.37 ms at the lowest allowed clock rate 6 MHz */ |
| usleep_range(2000, 2500); |
| return 0; |
| |
| fail_gpio: |
| dev->platform_data->flisclk_ctrl(sd, 0); |
| fail_clk: |
| __power_ctrl(sd, 0); |
| fail_power: |
| dev_err(&client->dev, "Sensor power-up failed\n"); |
| |
| return ret; |
| } |
| |
| static int power_down(struct v4l2_subdev *sd) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret; |
| dev_dbg(&client->dev, "%s\n", __func__); |
| |
| ret = dev->platform_data->flisclk_ctrl(sd, 0); |
| if (ret) |
| dev_err(&client->dev, "flisclk off failed\n"); |
| |
| ret = __gpio_ctrl(sd, 0); |
| if (ret) |
| dev_err(&client->dev, "gpio off failed\n"); |
| |
| ret = __power_ctrl(sd, 0); |
| if (ret) |
| dev_err(&client->dev, "power rail off failed.\n"); |
| |
| return ret; |
| } |
| |
| static int __ov8858_s_power(struct v4l2_subdev *sd, int on) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| int ret, r = 0; |
| |
| if (on == 0) { |
| ov8858_uninit(sd); |
| if (dev->vcm_driver && dev->vcm_driver->power_down) |
| r = dev->vcm_driver->power_down(sd); |
| ret = power_down(sd); |
| if (r != 0 && ret == 0) |
| ret = r; |
| } else { |
| ret = power_up(sd); |
| if (ret) |
| power_down(sd); |
| if (dev->vcm_driver && dev->vcm_driver->power_up) { |
| ret = dev->vcm_driver->power_up(sd); |
| if (ret) { |
| power_down(sd); |
| return ret; |
| } |
| } |
| return __ov8858_init(sd); |
| } |
| |
| return ret; |
| } |
| |
| static int ov8858_s_power(struct v4l2_subdev *sd, int on) |
| { |
| int ret; |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| |
| mutex_lock(&dev->input_lock); |
| ret = __ov8858_s_power(sd, on); |
| mutex_unlock(&dev->input_lock); |
| |
| /* |
| * FIXME: Compatibility with old behaviour: return to preview |
| * when the device is power cycled. |
| */ |
| if (!ret && on) |
| v4l2_ctrl_s_ctrl(dev->run_mode, ATOMISP_RUN_MODE_PREVIEW); |
| |
| return ret; |
| } |
| |
| /* |
| * Return value of the specified register, first try getting it from |
| * the register list and if not found, get from the sensor via i2c. |
| */ |
| static int ov8858_get_register(struct v4l2_subdev *sd, int reg, int type, |
| const struct ov8858_reg *reglist) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| const struct ov8858_reg *next; |
| u16 val; |
| |
| /* Try if the values are in the register list */ |
| for (next = reglist; next->type != OV8858_TOK_TERM; next++) { |
| if (next->sreg == reg) { |
| if (type == OV8858_8BIT) |
| return next->val; |
| |
| if (type == OV8858_16BIT && |
| next[1].type != OV8858_TOK_TERM) |
| return next[0].val << 8 | next[1].val; |
| } |
| } |
| |
| /* If not, read from sensor */ |
| if (ov8858_read_reg(client, type, reg, &val)) { |
| dev_err(&client->dev, "failed to read register 0x%08x\n", reg); |
| return -EIO; |
| } |
| |
| return val; |
| } |
| |
| static inline int ov8858_get_register_16bit(struct v4l2_subdev *sd, int reg, |
| const struct ov8858_reg *reglist) |
| { |
| return ov8858_get_register(sd, reg, OV8858_16BIT, reglist); |
| } |
| |
| static inline int ov8858_get_register_8bit(struct v4l2_subdev *sd, int reg, |
| const struct ov8858_reg *reglist) |
| { |
| return ov8858_get_register(sd, reg, OV8858_8BIT, reglist); |
| } |
| |
| static int __ov8858_get_pll1_values(struct v4l2_subdev *sd, |
| int *value, |
| const struct ov8858_reg *reglist) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| unsigned int prediv_idx; |
| unsigned int multiplier; |
| unsigned int sys_prediv; |
| unsigned int prediv_coef[] = {2, 3, 4, 5, 6, 8, 12, 16}; |
| int ret; |
| |
| ret = ov8858_get_register_8bit(sd, OV8858_PLL1_PREDIV0, reglist); |
| if (ret < 0) |
| return ret; |
| |
| if (ret & OV8858_PLL1_PREDIV0_MASK) |
| *value /= 2; |
| |
| ret = ov8858_get_register_8bit(sd, OV8858_PLL1_PREDIV, reglist); |
| |
| if (ret < 0) |
| return ret; |
| |
| prediv_idx = ret & OV8858_PLL1_PREDIV_MASK; |
| *value = *value * 2 / prediv_coef[prediv_idx]; |
| |
| ret = ov8858_get_register_16bit(sd, OV8858_PLL1_MULTIPLIER, reglist); |
| if (ret < 0) |
| return ret; |
| |
| multiplier = ret; |
| *value *= multiplier & OV8858_PLL1_MULTIPLIER_MASK; |
| ret = ov8858_get_register_8bit(sd, OV8858_PLL1_SYS_PRE_DIV, reglist); |
| |
| if (ret < 0) |
| return ret; |
| |
| sys_prediv = ret & OV8858_PLL1_SYS_PRE_DIV_MASK; |
| *value /= (sys_prediv + 3); |
| ret = ov8858_get_register_8bit(sd, OV8858_PLL1_SYS_DIVIDER, reglist); |
| |
| if (ret < 0) |
| return ret; |
| |
| if (ret & OV8858_PLL1_SYS_DIVIDER_MASK) |
| *value /= 2; |
| |
| dev_dbg(&client->dev, "%s: *value: %d\n", __func__, *value); |
| |
| return 0; |
| } |
| |
| static int __ov8858_get_pll2a_values(struct v4l2_subdev *sd, int *value, |
| const struct ov8858_reg *reglist) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| unsigned int prediv_idx; |
| unsigned int multiplier; |
| unsigned int prediv_coef[] = {2, 3, 4, 5, 6, 8, 12, 16}; |
| int ret; |
| |
| ret = ov8858_get_register_8bit(sd, OV8858_PLL2_PREDIV0, reglist); |
| if (ret < 0) |
| return ret; |
| |
| if (ret & OV8858_PLL2_PREDIV0_MASK) |
| *value /= 2; |
| |
| ret = ov8858_get_register_8bit(sd, OV8858_PLL2_PREDIV, reglist); |
| if (ret < 0) |
| return ret; |
| |
| prediv_idx = (ret & OV8858_PLL2_PREDIV_MASK); |
| *value = *value * 2 / prediv_coef[prediv_idx]; |
| |
| ret = ov8858_get_register_16bit(sd, OV8858_PLL2_MULTIPLIER, reglist); |
| if (ret < 0) |
| return ret; |
| |
| multiplier = ret; |
| *value *= multiplier & OV8858_PLL2_MULTIPLIER_MASK; |
| dev_dbg(&client->dev, "%s: *value: %d\n", __func__, *value); |
| |
| return 0; |
| } |
| static int __ov8858_get_pll2b_values(struct v4l2_subdev *sd, int *value, |
| const struct ov8858_reg *reglist) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| unsigned int dac_divider; |
| int ret; |
| |
| ret = ov8858_get_register_8bit(sd, OV8858_PLL2_DAC_DIVIDER, reglist); |
| if (ret < 0) |
| return ret; |
| |
| dac_divider = (ret & OV8858_PLL2_DAC_DIVIDER_MASK) + 1; |
| *value /= dac_divider; |
| |
| dev_dbg(&client->dev, "%s: *value: %d\n", __func__, *value); |
| |
| return 0; |
| } |
| static int __ov8858_get_pll2c_values(struct v4l2_subdev *sd, int *value, |
| const struct ov8858_reg *reglist) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| unsigned int sys_pre_div; |
| unsigned int sys_divider_idx; |
| unsigned int sys_divider_coef[] = {2, 3, 4, 5, 6, 7, 8, 10}; |
| int ret; |
| |
| ret = ov8858_get_register_8bit(sd, OV8858_PLL2_SYS_PRE_DIV, reglist); |
| if (ret < 0) |
| return ret; |
| |
| sys_pre_div = (ret & OV8858_PLL2_SYS_PRE_DIV_MASK) + 1; |
| *value /= sys_pre_div; |
| |
| ret = ov8858_get_register_8bit(sd, OV8858_PLL2_SYS_DIVIDER, reglist); |
| if (ret < 0) |
| return ret; |
| |
| sys_divider_idx = ret & OV8858_PLL2_SYS_DIVIDER_MASK; |
| *value *= 2 / sys_divider_coef[sys_divider_idx]; |
| |
| dev_dbg(&client->dev, "%s: *value: %d\n", __func__, *value); |
| |
| return 0; |
| } |
| |
| static int ov8858_get_intg_factor(struct v4l2_subdev *sd, |
| struct camera_mipi_info *info, |
| const struct ov8858_reg *reglist) |
| { |
| const unsigned int ext_clk = 19200000; /* Hz */ |
| struct atomisp_sensor_mode_data *m = &info->data; |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct device *d = &client->dev; |
| const struct ov8858_resolution *res = |
| &dev->curr_res_table[dev->fmt_idx]; |
| unsigned int pll_sclksel1; |
| unsigned int pll_sclksel2; |
| unsigned int sys_pre_div; |
| unsigned int sclk_pdiv; |
| unsigned int sclk = ext_clk; |
| u16 hts; |
| int ret; |
| |
| memset(&info->data, 0, sizeof(info->data)); |
| |
| ret = ov8858_get_register_8bit(sd, OV8858_PLL_SCLKSEL1, reglist); |
| if (ret < 0) |
| return ret; |
| |
| dev_dbg(d, "%s: OV8858_PLL_SCLKSEL1: 0x%02x\n", __func__, ret); |
| pll_sclksel1 = ret & OV8858_PLL_SCLKSEL1_MASK; |
| |
| ret = ov8858_get_register_8bit(sd, OV8858_PLL_SCLKSEL2, reglist); |
| if (ret < 0) |
| return ret; |
| |
| dev_dbg(d, "%s: OV8858_PLL_SCLKSEL2: 0x%02x\n", __func__, ret); |
| pll_sclksel2 = ret & OV8858_PLL_SCLKSEL2_MASK; |
| |
| if (pll_sclksel2) { |
| ret = __ov8858_get_pll2a_values(sd, &sclk, reglist); |
| if (ret < 0) |
| return ret; |
| ret = __ov8858_get_pll2b_values(sd, &sclk, reglist); |
| if (ret < 0) |
| return ret; |
| } else if (pll_sclksel1) { |
| ret = __ov8858_get_pll2a_values(sd, &sclk, reglist); |
| if (ret < 0) |
| return ret; |
| ret = __ov8858_get_pll2c_values(sd, &sclk, reglist); |
| if (ret < 0) |
| return ret; |
| } else { |
| ret = __ov8858_get_pll1_values(sd, &sclk, reglist); |
| if (ret < 0) |
| return ret; |
| } |
| |
| ret = ov8858_get_register_8bit(sd, OV8858_SRB_HOST_INPUT_DIS, reglist); |
| if (ret < 0) |
| return ret; |
| |
| dev_dbg(d, "%s: OV8858_SRB_HOST_INPUT_DIS: 0x%02x\n", __func__, ret); |
| |
| sys_pre_div = ret & OV8858_SYS_PRE_DIV_MASK; |
| sys_pre_div >>= OV8858_SYS_PRE_DIV_OFFSET; |
| |
| if (sys_pre_div == 1) |
| sclk /= 2; |
| else if (sys_pre_div == 2) |
| sclk /= 4; |
| |
| sclk_pdiv = ret & OV8858_SCLK_PDIV_MASK; |
| sclk_pdiv >>= OV8858_SCLK_PDIV_OFFSET; |
| |
| if (sclk_pdiv > 1) |
| sclk /= sclk_pdiv; |
| |
| dev_dbg(d, "%s: sclk: %d\n", __func__, sclk); |
| |
| dev->vt_pix_clk_freq_mhz = sclk; |
| m->vt_pix_clk_freq_mhz = sclk; |
| |
| /* HTS and VTS */ |
| m->frame_length_lines = |
| res->fps_options[dev->fps_index].lines_per_frame; |
| m->line_length_pck = res->fps_options[dev->fps_index].pixels_per_line; |
| |
| m->coarse_integration_time_min = 0; |
| m->coarse_integration_time_max_margin = OV8858_INTEGRATION_TIME_MARGIN; |
| ret = ov8858_read_reg(client, OV8858_16BIT, OV8858_TIMING_HTS, &hts); |
| if (ret < 0) |
| return ret; |
| m->hts = hts; |
| dev_dbg(&client->dev, "%s: get HTS %d\n", __func__, hts); |
| |
| /* OV Sensor do not use fine integration time. */ |
| m->fine_integration_time_min = 0; |
| m->fine_integration_time_max_margin = 0; |
| |
| /* |
| * read_mode indicate whether binning is used for calculating |
| * the correct exposure value from the user side. So adapt the |
| * read mode values accordingly. |
| */ |
| m->read_mode = res->bin_factor_x ? |
| OV8858_READ_MODE_BINNING_ON : OV8858_READ_MODE_BINNING_OFF; |
| |
| ret = ov8858_get_register_8bit(sd, OV8858_H_INC_ODD, res->regs); |
| if (ret < 0) |
| return ret; |
| m->binning_factor_x = (ret + 1) / 2; |
| |
| ret = ov8858_get_register_8bit(sd, OV8858_V_INC_ODD, res->regs); |
| if (ret < 0) |
| return ret; |
| m->binning_factor_y = (ret + 1) / 2; |
| |
| /* Get the cropping and output resolution to ISP for this mode. */ |
| ret = ov8858_get_register_16bit(sd, OV8858_HORIZONTAL_START_H, |
| res->regs); |
| if (ret < 0) |
| return ret; |
| |
| m->crop_horizontal_start = ret; |
| |
| ret = ov8858_get_register_16bit(sd, OV8858_VERTICAL_START_H, res->regs); |
| if (ret < 0) |
| return ret; |
| |
| m->crop_vertical_start = ret; |
| |
| ret = ov8858_get_register_16bit(sd, OV8858_HORIZONTAL_END_H, res->regs); |
| if (ret < 0) |
| return ret; |
| |
| m->crop_horizontal_end = ret; |
| |
| ret = ov8858_get_register_16bit(sd, OV8858_VERTICAL_END_H, res->regs); |
| if (ret < 0) |
| return ret; |
| |
| m->crop_vertical_end = ret; |
| |
| ret = ov8858_get_register_16bit(sd, OV8858_HORIZONTAL_OUTPUT_SIZE_H, |
| res->regs); |
| if (ret < 0) |
| return ret; |
| |
| m->output_width = ret; |
| |
| ret = ov8858_get_register_16bit(sd, OV8858_VERTICAL_OUTPUT_SIZE_H, |
| res->regs); |
| if (ret < 0) |
| return ret; |
| |
| m->output_height = ret; |
| |
| return 0; |
| } |
| |
| /* |
| * distance - calculate the distance |
| * @res: resolution |
| * @w: width |
| * @h: height |
| * |
| * Get the gap between res_w/res_h and w/h. |
| * distance = (res_w/res_h - w/h) / (w/h) * 8192 |
| * res->width/height smaller than w/h wouldn't be considered. |
| * The gap of ratio larger than 1/8 wouldn't be considered. |
| * Returns the value of gap or -1 if fail. |
| */ |
| #define LARGEST_ALLOWED_RATIO_MISMATCH 1024 |
| static int distance(struct ov8858_resolution const *res, const u32 w, |
| const u32 h) |
| { |
| int ratio; |
| int distance; |
| |
| if (w == 0 || h == 0 || |
| res->width < w || res->height < h) |
| return -1; |
| |
| ratio = res->width << 13; |
| ratio /= w; |
| ratio *= h; |
| ratio /= res->height; |
| |
| distance = abs(ratio - 8192); |
| |
| if (distance > LARGEST_ALLOWED_RATIO_MISMATCH) |
| return -1; |
| return distance; |
| } |
| |
| /* |
| * Returns the nearest higher resolution index. |
| * @w: width |
| * @h: height |
| * matching is done based on enveloping resolution and |
| * aspect ratio. If the aspect ratio cannot be matched |
| * to any index, -1 is returned. |
| */ |
| static int nearest_resolution_index(struct v4l2_subdev *sd, int w, int h) |
| { |
| int i; |
| int idx = -1; |
| int dist; |
| int fps_diff; |
| int min_fps_diff = INT_MAX; |
| int min_dist = INT_MAX; |
| int min_res_w = INT_MAX; |
| const struct ov8858_resolution *tmp_res = NULL; |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| dev_dbg(&client->dev, "%s: w=%d, h=%d\n", __func__, w, h); |
| |
| for (i = 0; i < dev->entries_curr_table; i++) { |
| tmp_res = &dev->curr_res_table[i]; |
| dist = distance(tmp_res, w, h); |
| dev_dbg(&client->dev, |
| "%s[%d]: %dx%d distance=%d\n", tmp_res->desc, |
| i, tmp_res->width, tmp_res->height, dist); |
| if (dist == -1) |
| continue; |
| if (dist < min_dist) { |
| min_dist = dist; |
| min_res_w = tmp_res->width; |
| min_fps_diff = __ov8858_min_fps_diff(dev->fps, |
| tmp_res->fps_options); |
| idx = i; |
| } |
| if (dist == min_dist) { |
| fps_diff = __ov8858_min_fps_diff(dev->fps, |
| tmp_res->fps_options); |
| if (fps_diff < min_fps_diff) { |
| min_fps_diff = fps_diff; |
| idx = i; |
| } |
| if (tmp_res->width < min_res_w) { |
| min_res_w = tmp_res->width; |
| idx = i; |
| } |
| } |
| } |
| |
| return idx; |
| } |
| |
| static int ov8858_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 ov8858_device *dev = to_ov8858_sensor(sd); |
| struct camera_mipi_info *ov8858_info = NULL; |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| const struct ov8858_resolution *res; |
| int ret; |
| int idx; |
| if (format->pad) |
| return -EINVAL; |
| if (!fmt) |
| return -EINVAL; |
| |
| ov8858_info = v4l2_get_subdev_hostdata(sd); |
| if (ov8858_info == NULL) |
| return -EINVAL; |
| |
| mutex_lock(&dev->input_lock); |
| |
| if ((fmt->width > OV8858_RES_WIDTH_MAX) || |
| (fmt->height > OV8858_RES_HEIGHT_MAX)) { |
| fmt->width = OV8858_RES_WIDTH_MAX; |
| fmt->height = OV8858_RES_HEIGHT_MAX; |
| } else { |
| idx = nearest_resolution_index(sd, fmt->width, fmt->height); |
| |
| /* |
| * nearest_resolution_index() doesn't return smaller |
| * resolutions. If it fails, it means the requested resolution |
| * is higher than we can support. Fallback to highest possible |
| * resolution in this case. |
| */ |
| if (idx == -1) |
| idx = dev->entries_curr_table - 1; |
| |
| fmt->width = dev->curr_res_table[idx].width; |
| fmt->height = dev->curr_res_table[idx].height; |
| } |
| |
| fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; |
| if (format->which == V4L2_SUBDEV_FORMAT_TRY) { |
| cfg->try_fmt = *fmt; |
| mutex_unlock(&dev->input_lock); |
| return 0; |
| } |
| |
| dev->fmt_idx = nearest_resolution_index(sd, fmt->width, fmt->height); |
| if (dev->fmt_idx == -1) { |
| ret = -EINVAL; |
| goto out; |
| } |
| res = &dev->curr_res_table[dev->fmt_idx]; |
| dev_dbg(&client->dev, "%s: selected width = %d, height = %d\n", |
| __func__, res->width, res->height); |
| |
| /* Adjust the FPS selection based on the resolution selected */ |
| dev->fps_index = __ov8858_nearest_fps_index(dev->fps, res->fps_options); |
| dev->fps = res->fps_options[dev->fps_index].fps; |
| dev->regs = res->fps_options[dev->fps_index].regs; |
| if (!dev->regs) |
| dev->regs = res->regs; |
| |
| ret = ov8858_write_reg_array(client, dev->regs); |
| if (ret) |
| goto out; |
| |
| dev->pixels_per_line = res->fps_options[dev->fps_index].pixels_per_line; |
| dev->lines_per_frame = res->fps_options[dev->fps_index].lines_per_frame; |
| |
| /* ov8858 only support RGB RAW10 output */ |
| ov8858_info->metadata_width = res->width * 10 / 8; |
| ov8858_info->metadata_height = 2; |
| ov8858_info->metadata_format = ATOMISP_INPUT_FORMAT_EMBEDDED; |
| |
| /* Set the initial exposure */ |
| ret = __ov8858_set_exposure(sd, dev->exposure, dev->gain, |
| dev->digital_gain, &dev->pixels_per_line, |
| &dev->lines_per_frame); |
| if (ret) |
| goto out; |
| |
| ret = ov8858_get_intg_factor(sd, ov8858_info, dev->regs); |
| |
| out: |
| mutex_unlock(&dev->input_lock); |
| |
| return ret; |
| } |
| |
| static int ov8858_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 ov8858_device *dev = to_ov8858_sensor(sd); |
| |
| if (format->pad) |
| return -EINVAL; |
| if (!fmt) |
| return -EINVAL; |
| |
| mutex_lock(&dev->input_lock); |
| fmt->width = dev->curr_res_table[dev->fmt_idx].width; |
| fmt->height = dev->curr_res_table[dev->fmt_idx].height; |
| fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; |
| mutex_unlock(&dev->input_lock); |
| |
| return 0; |
| } |
| |
| static int ov8858_detect(struct i2c_client *client, u16 *id) |
| { |
| struct i2c_adapter *adapter = client->adapter; |
| u16 id_hi = 0; |
| u16 id_low = 0; |
| int ret; |
| |
| /* i2c check */ |
| if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) |
| return -ENODEV; |
| |
| dev_dbg(&client->dev, "%s: I2C functionality ok\n", __func__); |
| ret = ov8858_read_reg(client, OV8858_8BIT, OV8858_CHIP_ID_HIGH, &id_hi); |
| if (ret) |
| return ret; |
| dev_dbg(&client->dev, "%s: id_high = 0x%04x\n", __func__, id_hi); |
| ret = ov8858_read_reg(client, OV8858_8BIT, OV8858_CHIP_ID_LOW, &id_low); |
| if (ret) |
| return ret; |
| dev_dbg(&client->dev, "%s: id_low = 0x%04x\n", __func__, id_low); |
| *id = (id_hi << 8) | id_low; |
| |
| dev_dbg(&client->dev, "%s: chip_id = 0x%04x\n", __func__, *id); |
| |
| dev_info(&client->dev, "%s: chip_id = 0x%04x\n", __func__, *id); |
| if (*id != OV8858_CHIP_ID) |
| return -ENODEV; |
| |
| /* Stream off now. */ |
| return ov8858_write_reg(client, OV8858_8BIT, OV8858_STREAM_MODE, 0); |
| } |
| |
| static void __ov8858_print_timing(struct v4l2_subdev *sd) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| u16 width = dev->curr_res_table[dev->fmt_idx].width; |
| u16 height = dev->curr_res_table[dev->fmt_idx].height; |
| |
| dev_dbg(&client->dev, "Dump ov8858 timing in stream on:\n"); |
| dev_dbg(&client->dev, "width: %d:\n", width); |
| dev_dbg(&client->dev, "height: %d:\n", height); |
| dev_dbg(&client->dev, "pixels_per_line: %d:\n", dev->pixels_per_line); |
| dev_dbg(&client->dev, "line per frame: %d:\n", dev->lines_per_frame); |
| dev_dbg(&client->dev, "pix freq: %d:\n", dev->vt_pix_clk_freq_mhz); |
| /* updated formula: pixels_per_line = 2 * HTS */ |
| /* updated formula: fps = SCLK / (VTS * HTS) */ |
| dev_dbg(&client->dev, "init fps: %d:\n", dev->vt_pix_clk_freq_mhz / |
| (dev->pixels_per_line / 2) / dev->lines_per_frame); |
| dev_dbg(&client->dev, "HBlank: %d nS:\n", |
| 1000 * (dev->pixels_per_line - width) / |
| (dev->vt_pix_clk_freq_mhz / 1000000)); |
| dev_dbg(&client->dev, "VBlank: %d uS:\n", |
| (dev->lines_per_frame - height) * dev->pixels_per_line / |
| (dev->vt_pix_clk_freq_mhz / 1000000)); |
| } |
| |
| /* |
| * ov8858 stream on/off |
| */ |
| static int ov8858_s_stream(struct v4l2_subdev *sd, int enable) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret; |
| u16 val; |
| dev_dbg(&client->dev, "%s: enable = %d\n", __func__, enable); |
| |
| /* Set orientation */ |
| ret = ov8858_read_reg(client, OV8858_8BIT, OV8858_FORMAT2, &val); |
| if (ret) |
| return ret; |
| |
| ret = ov8858_write_reg(client, OV8858_8BIT, OV8858_FORMAT2, |
| dev->hflip ? val | OV8858_FLIP_ENABLE : |
| val & ~OV8858_FLIP_ENABLE); |
| if (ret) |
| return ret; |
| |
| ret = ov8858_read_reg(client, OV8858_8BIT, OV8858_FORMAT1, &val); |
| if (ret) |
| return ret; |
| |
| ret = ov8858_write_reg(client, OV8858_8BIT, OV8858_FORMAT1, |
| dev->vflip ? val | OV8858_FLIP_ENABLE : |
| val & ~OV8858_FLIP_ENABLE); |
| if (ret) |
| return ret; |
| |
| mutex_lock(&dev->input_lock); |
| if (enable) { |
| __ov8858_print_timing(sd); |
| ret = ov8858_write_reg_array(client, ov8858_streaming); |
| if (ret != 0) { |
| dev_err(&client->dev, "write_reg_array err\n"); |
| goto out; |
| } |
| dev->streaming = 1; |
| } else { |
| ret = ov8858_write_reg_array(client, ov8858_soft_standby); |
| if (ret != 0) { |
| dev_err(&client->dev, "write_reg_array err\n"); |
| goto out; |
| } |
| dev->streaming = 0; |
| dev->fps_index = 0; |
| dev->fps = 0; |
| } |
| out: |
| mutex_unlock(&dev->input_lock); |
| return ret; |
| } |
| |
| static int __update_ov8858_device_settings(struct ov8858_device *dev, |
| u16 sensor_id) |
| { |
| if (sensor_id == OV8858_CHIP_ID) |
| #ifdef CONFIG_PLATFORM_BTNS |
| dev->vcm_driver = &ov8858_vcms[OV8858_ID_DEFAULT]; |
| #else |
| dev->vcm_driver = &ov8858_vcms[OV8858_SUNNY]; |
| #endif |
| else |
| return -ENODEV; |
| |
| if (dev->vcm_driver && dev->vcm_driver->init) |
| return dev->vcm_driver->init(&dev->sd); |
| |
| return 0; |
| } |
| |
| static int ov8858_s_config(struct v4l2_subdev *sd, |
| int irq, void *pdata) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| u16 sensor_id; |
| int ret; |
| |
| if (pdata == NULL) |
| return -ENODEV; |
| |
| dev->platform_data = pdata; |
| |
| mutex_lock(&dev->input_lock); |
| |
| if (dev->platform_data->platform_init) { |
| ret = dev->platform_data->platform_init(client); |
| if (ret) { |
| mutex_unlock(&dev->input_lock); |
| dev_err(&client->dev, "platform init error %d!\n", ret); |
| return ret; |
| } |
| } |
| |
| ret = __ov8858_s_power(sd, 1); |
| if (ret) { |
| dev_err(&client->dev, "power-up error %d!\n", ret); |
| mutex_unlock(&dev->input_lock); |
| return ret; |
| } |
| |
| ret = dev->platform_data->csi_cfg(sd, 1); |
| if (ret) |
| goto fail_csi_cfg; |
| |
| /* config & detect sensor */ |
| ret = ov8858_detect(client, &sensor_id); |
| if (ret) { |
| dev_err(&client->dev, "detect error %d!\n", ret); |
| goto fail_detect; |
| } |
| |
| dev->sensor_id = sensor_id; |
| |
| /* power off sensor */ |
| ret = __ov8858_s_power(sd, 0); |
| if (ret) { |
| dev->platform_data->csi_cfg(sd, 0); |
| dev_err(&client->dev, "__ov8858_s_power-down error %d!\n", ret); |
| goto fail_update; |
| } |
| |
| /* Resolution settings depend on sensor type and platform */ |
| ret = __update_ov8858_device_settings(dev, dev->sensor_id); |
| if (ret) { |
| dev->platform_data->csi_cfg(sd, 0); |
| dev_err(&client->dev, "__update_ov8858_device_settings error %d!\n", ret); |
| goto fail_update; |
| } |
| |
| mutex_unlock(&dev->input_lock); |
| return ret; |
| |
| fail_detect: |
| dev->platform_data->csi_cfg(sd, 0); |
| fail_csi_cfg: |
| __ov8858_s_power(sd, 0); |
| fail_update: |
| if (dev->platform_data->platform_deinit) |
| dev->platform_data->platform_deinit(); |
| mutex_unlock(&dev->input_lock); |
| dev_err(&client->dev, "sensor power-gating failed\n"); |
| return ret; |
| } |
| |
| static int |
| ov8858_enum_mbus_code(struct v4l2_subdev *sd, |
| struct v4l2_subdev_pad_config *cfg, |
| struct v4l2_subdev_mbus_code_enum *code) |
| { |
| if (code->index) |
| return -EINVAL; |
| code->code = MEDIA_BUS_FMT_SBGGR10_1X10; |
| |
| return 0; |
| } |
| |
| static int |
| ov8858_enum_frame_size(struct v4l2_subdev *sd, |
| struct v4l2_subdev_pad_config *cfg, |
| struct v4l2_subdev_frame_size_enum *fse) |
| { |
| int index = fse->index; |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| |
| mutex_lock(&dev->input_lock); |
| if (index >= dev->entries_curr_table) { |
| mutex_unlock(&dev->input_lock); |
| return -EINVAL; |
| } |
| |
| fse->min_width = dev->curr_res_table[index].width; |
| fse->min_height = dev->curr_res_table[index].height; |
| fse->max_width = dev->curr_res_table[index].width; |
| fse->max_height = dev->curr_res_table[index].height; |
| mutex_unlock(&dev->input_lock); |
| |
| return 0; |
| } |
| |
| static int ov8858_s_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct ov8858_device *dev = container_of( |
| ctrl->handler, struct ov8858_device, ctrl_handler); |
| struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); |
| |
| /* input_lock is taken by the control framework, so it |
| * doesn't need to be taken here. |
| */ |
| |
| switch (ctrl->id) { |
| case V4L2_CID_RUN_MODE: |
| switch (ctrl->val) { |
| case ATOMISP_RUN_MODE_VIDEO: |
| dev->curr_res_table = ov8858_res_video; |
| dev->entries_curr_table = ARRAY_SIZE(ov8858_res_video); |
| break; |
| case ATOMISP_RUN_MODE_STILL_CAPTURE: |
| dev->curr_res_table = ov8858_res_still; |
| dev->entries_curr_table = ARRAY_SIZE(ov8858_res_still); |
| break; |
| default: |
| dev->curr_res_table = ov8858_res_preview; |
| dev->entries_curr_table = |
| ARRAY_SIZE(ov8858_res_preview); |
| } |
| |
| dev->fmt_idx = 0; |
| dev->fps_index = 0; |
| |
| return 0; |
| case V4L2_CID_FOCUS_ABSOLUTE: |
| if (dev->vcm_driver && dev->vcm_driver->t_focus_abs) |
| return dev->vcm_driver->t_focus_abs(&dev->sd, |
| ctrl->val); |
| return 0; |
| case V4L2_CID_EXPOSURE_AUTO_PRIORITY: |
| if (ctrl->val == V4L2_EXPOSURE_AUTO) |
| dev->limit_exposure_flag = false; |
| else if (ctrl->val == V4L2_EXPOSURE_APERTURE_PRIORITY) |
| dev->limit_exposure_flag = true; |
| return 0; |
| case V4L2_CID_HFLIP: |
| dev->hflip = ctrl->val; |
| return 0; |
| case V4L2_CID_VFLIP: |
| dev->vflip = ctrl->val; |
| return 0; |
| default: |
| dev_err(&client->dev, "%s: Error: Invalid ctrl: 0x%X\n", |
| __func__, ctrl->id); |
| return -EINVAL; |
| } |
| } |
| |
| static int ov8858_g_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct ov8858_device *dev = container_of( |
| ctrl->handler, struct ov8858_device, ctrl_handler); |
| struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); |
| int r_odd, r_even; |
| int i = dev->fmt_idx; |
| |
| switch (ctrl->id) { |
| case V4L2_CID_FOCUS_STATUS: |
| if (dev->vcm_driver && dev->vcm_driver->q_focus_status) |
| return dev->vcm_driver->q_focus_status(&dev->sd, |
| &(ctrl->val)); |
| return 0; |
| case V4L2_CID_BIN_FACTOR_HORZ: |
| r_odd = ov8858_get_register_8bit(&dev->sd, OV8858_H_INC_ODD, |
| dev->curr_res_table[i].regs); |
| if (r_odd < 0) |
| return r_odd; |
| r_even = ov8858_get_register_8bit(&dev->sd, OV8858_H_INC_EVEN, |
| dev->curr_res_table[i].regs); |
| if (r_even < 0) |
| return r_even; |
| ctrl->val = fls(r_odd + (r_even)) - 2; |
| return 0; |
| |
| case V4L2_CID_BIN_FACTOR_VERT: |
| r_odd = ov8858_get_register_8bit(&dev->sd, OV8858_V_INC_ODD, |
| dev->curr_res_table[i].regs); |
| if (r_odd < 0) |
| return r_odd; |
| r_even = ov8858_get_register_8bit(&dev->sd, OV8858_V_INC_EVEN, |
| dev->curr_res_table[i].regs); |
| if (r_even < 0) |
| return r_even; |
| ctrl->val = fls(r_odd + (r_even)) - 2; |
| return 0; |
| case V4L2_CID_HFLIP: |
| ctrl->val = dev->hflip; |
| break; |
| case V4L2_CID_VFLIP: |
| ctrl->val = dev->vflip; |
| break; |
| case V4L2_CID_EXPOSURE_ABSOLUTE: |
| ctrl->val = dev->exposure; |
| break; |
| default: |
| dev_warn(&client->dev, |
| "%s: Error: Invalid ctrl: 0x%X\n", __func__, ctrl->id); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| ov8858_g_frame_interval(struct v4l2_subdev *sd, |
| struct v4l2_subdev_frame_interval *interval) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| const struct ov8858_resolution *res = |
| &dev->curr_res_table[dev->fmt_idx]; |
| |
| mutex_lock(&dev->input_lock); |
| interval->interval.denominator = res->fps_options[dev->fps_index].fps; |
| interval->interval.numerator = 1; |
| mutex_unlock(&dev->input_lock); |
| return 0; |
| } |
| |
| static int __ov8858_s_frame_interval(struct v4l2_subdev *sd, |
| struct v4l2_subdev_frame_interval *interval) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| const struct ov8858_resolution *res = |
| &dev->curr_res_table[dev->fmt_idx]; |
| struct camera_mipi_info *info = NULL; |
| unsigned int fps_index; |
| int ret = 0; |
| int fps; |
| |
| info = v4l2_get_subdev_hostdata(sd); |
| if (info == NULL) |
| return -EINVAL; |
| |
| if (!interval->interval.numerator) |
| interval->interval.numerator = 1; |
| |
| fps = interval->interval.denominator / interval->interval.numerator; |
| |
| /* No need to proceed further if we are not streaming */ |
| if (!dev->streaming) { |
| /* Save the new FPS and use it while selecting setting */ |
| dev->fps = fps; |
| return 0; |
| } |
| |
| /* Ignore if we are already using the required FPS. */ |
| if (fps == res->fps_options[dev->fps_index].fps) |
| return 0; |
| |
| fps_index = __ov8858_nearest_fps_index(fps, res->fps_options); |
| |
| if (res->fps_options[fps_index].regs && |
| res->fps_options[fps_index].regs != dev->regs) { |
| dev_err(&client->dev, |
| "Sensor is streaming, can't apply new configuration\n"); |
| return -EBUSY; |
| } |
| |
| dev->fps_index = fps_index; |
| dev->fps = res->fps_options[dev->fps_index].fps; |
| |
| /* Update the new frametimings based on FPS */ |
| dev->pixels_per_line = |
| res->fps_options[dev->fps_index].pixels_per_line; |
| dev->lines_per_frame = |
| res->fps_options[dev->fps_index].lines_per_frame; |
| |
| /* update frametiming. Conside the curren exposure/gain as well */ |
| ret = __ov8858_update_frame_timing(sd, |
| &dev->pixels_per_line, &dev->lines_per_frame); |
| if (ret) |
| return ret; |
| |
| /* Update the new values so that user side knows the current settings */ |
| ret = ov8858_get_intg_factor(sd, info, dev->regs); |
| if (ret) |
| return ret; |
| |
| interval->interval.denominator = res->fps_options[dev->fps_index].fps; |
| interval->interval.numerator = 1; |
| __ov8858_print_timing(sd); |
| |
| return ret; |
| } |
| |
| static int ov8858_s_frame_interval(struct v4l2_subdev *sd, |
| struct v4l2_subdev_frame_interval *interval) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| int ret; |
| |
| mutex_lock(&dev->input_lock); |
| ret = __ov8858_s_frame_interval(sd, interval); |
| mutex_unlock(&dev->input_lock); |
| |
| return ret; |
| } |
| |
| static int ov8858_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) |
| { |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| |
| mutex_lock(&dev->input_lock); |
| *frames = dev->curr_res_table[dev->fmt_idx].skip_frames; |
| mutex_unlock(&dev->input_lock); |
| |
| return 0; |
| } |
| |
| static const struct v4l2_subdev_sensor_ops ov8858_sensor_ops = { |
| .g_skip_frames = ov8858_g_skip_frames, |
| }; |
| |
| static const struct v4l2_ctrl_ops ctrl_ops = { |
| .s_ctrl = ov8858_s_ctrl, |
| .g_volatile_ctrl = ov8858_g_ctrl, |
| }; |
| |
| static const struct v4l2_subdev_video_ops ov8858_video_ops = { |
| .s_stream = ov8858_s_stream, |
| .g_frame_interval = ov8858_g_frame_interval, |
| .s_frame_interval = ov8858_s_frame_interval, |
| }; |
| |
| static const struct v4l2_subdev_core_ops ov8858_core_ops = { |
| .s_power = ov8858_s_power, |
| .ioctl = ov8858_ioctl, |
| .init = ov8858_init, |
| }; |
| |
| static const struct v4l2_subdev_pad_ops ov8858_pad_ops = { |
| .enum_mbus_code = ov8858_enum_mbus_code, |
| .enum_frame_size = ov8858_enum_frame_size, |
| .get_fmt = ov8858_get_fmt, |
| .set_fmt = ov8858_set_fmt, |
| }; |
| |
| static const struct v4l2_subdev_ops ov8858_ops = { |
| .core = &ov8858_core_ops, |
| .video = &ov8858_video_ops, |
| .pad = &ov8858_pad_ops, |
| .sensor = &ov8858_sensor_ops, |
| }; |
| |
| static const struct media_entity_operations ov_entity_ops = { |
| .link_setup = NULL, |
| }; |
| |
| static int ov8858_remove(struct i2c_client *client) |
| { |
| struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| struct ov8858_device *dev = to_ov8858_sensor(sd); |
| if (dev->platform_data->platform_deinit) |
| dev->platform_data->platform_deinit(); |
| |
| media_entity_cleanup(&dev->sd.entity); |
| v4l2_ctrl_handler_free(&dev->ctrl_handler); |
| dev->platform_data->csi_cfg(sd, 0); |
| v4l2_device_unregister_subdev(sd); |
| kfree(dev); |
| |
| return 0; |
| } |
| |
| static const char * const ctrl_run_mode_menu[] = { |
| NULL, |
| "Video", |
| "Still capture", |
| "Continuous capture", |
| "Preview", |
| }; |
| |
| static const struct v4l2_ctrl_config ctrl_run_mode = { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_RUN_MODE, |
| .name = "run mode", |
| .type = V4L2_CTRL_TYPE_MENU, |
| .min = 1, |
| .def = 4, |
| .max = 4, |
| .qmenu = ctrl_run_mode_menu, |
| }; |
| |
| static const struct v4l2_ctrl_config ctrls[] = { |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_VFLIP, |
| .name = "Vertical flip", |
| .type = V4L2_CTRL_TYPE_BOOLEAN, |
| .min = false, |
| .max = true, |
| .step = 1, |
| }, { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_HFLIP, |
| .name = "Horizontal flip", |
| .type = V4L2_CTRL_TYPE_BOOLEAN, |
| .min = false, |
| .max = true, |
| .step = 1, |
| }, { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_EXPOSURE_ABSOLUTE, |
| .name = "Absolute exposure", |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .max = 0xffff, |
| .min = 0x0, |
| .step = 1, |
| .def = 0x00, |
| .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_VOLATILE, |
| }, { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_FOCUS_ABSOLUTE, |
| .name = "Focus absolute", |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .step = 1, |
| .max = OV8858_MAX_FOCUS_POS, |
| }, { |
| /* This one is junk: see the spec for proper use of this CID. */ |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_FOCUS_STATUS, |
| .name = "Focus status", |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .step = 1, |
| .max = 100, |
| .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_VOLATILE, |
| }, { |
| /* This is crap. For compatibility use only. */ |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_FOCAL_ABSOLUTE, |
| .name = "Focal lenght", |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .min = (OV8858_FOCAL_LENGTH_NUM << 16) | |
| OV8858_FOCAL_LENGTH_DEM, |
| .max = (OV8858_FOCAL_LENGTH_NUM << 16) | |
| OV8858_FOCAL_LENGTH_DEM, |
| .step = 1, |
| .def = (OV8858_FOCAL_LENGTH_NUM << 16) | |
| OV8858_FOCAL_LENGTH_DEM, |
| .flags = V4L2_CTRL_FLAG_READ_ONLY, |
| }, { |
| /* This one is crap, too. For compatibility use only. */ |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_FNUMBER_ABSOLUTE, |
| .name = "F-number", |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .min = (OV8858_F_NUMBER_DEFAULT_NUM << 16) | |
| OV8858_F_NUMBER_DEM, |
| .max = (OV8858_F_NUMBER_DEFAULT_NUM << 16) | |
| OV8858_F_NUMBER_DEM, |
| .step = 1, |
| .def = (OV8858_F_NUMBER_DEFAULT_NUM << 16) | |
| OV8858_F_NUMBER_DEM, |
| .flags = V4L2_CTRL_FLAG_READ_ONLY, |
| }, { |
| /* |
| * The most utter crap. _Never_ use this, even for |
| * compatibility reasons! |
| */ |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_FNUMBER_RANGE, |
| .name = "F-number range", |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .min = (OV8858_F_NUMBER_DEFAULT_NUM << 24) | |
| (OV8858_F_NUMBER_DEM << 16) | |
| (OV8858_F_NUMBER_DEFAULT_NUM << 8) | |
| OV8858_F_NUMBER_DEM, |
| .max = (OV8858_F_NUMBER_DEFAULT_NUM << 24) | |
| (OV8858_F_NUMBER_DEM << 16) | |
| (OV8858_F_NUMBER_DEFAULT_NUM << 8) | |
| OV8858_F_NUMBER_DEM, |
| .step = 1, |
| .def = (OV8858_F_NUMBER_DEFAULT_NUM << 24) | |
| (OV8858_F_NUMBER_DEM << 16) | |
| (OV8858_F_NUMBER_DEFAULT_NUM << 8) | |
| OV8858_F_NUMBER_DEM, |
| .flags = V4L2_CTRL_FLAG_READ_ONLY, |
| }, { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_BIN_FACTOR_HORZ, |
| .name = "Horizontal binning factor", |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .max = OV8858_BIN_FACTOR_MAX, |
| .step = 1, |
| .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_VOLATILE, |
| }, { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_BIN_FACTOR_VERT, |
| .name = "Vertical binning factor", |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .max = OV8858_BIN_FACTOR_MAX, |
| .step = 1, |
| .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_VOLATILE, |
| }, { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_EXPOSURE_AUTO_PRIORITY, |
| .name = "Exposure auto priority", |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .min = V4L2_EXPOSURE_AUTO, |
| .max = V4L2_EXPOSURE_APERTURE_PRIORITY, |
| .step = 1, |
| } |
| }; |
| |
| static int ov8858_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| struct ov8858_device *dev; |
| unsigned int i; |
| int ret = 0; |
| struct camera_sensor_platform_data *pdata; |
| |
| dev_dbg(&client->dev, "%s:\n", __func__); |
| |
| /* allocate sensor device & init sub device */ |
| dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
| if (!dev) { |
| dev_err(&client->dev, "%s: out of memory\n", __func__); |
| return -ENOMEM; |
| } |
| |
| mutex_init(&dev->input_lock); |
| |
| if (id) |
| dev->i2c_id = id->driver_data; |
| dev->fmt_idx = 0; |
| dev->sensor_id = OV_ID_DEFAULT; |
| dev->vcm_driver = &ov8858_vcms[OV8858_ID_DEFAULT]; |
| |
| v4l2_i2c_subdev_init(&(dev->sd), client, &ov8858_ops); |
| |
| if (ACPI_COMPANION(&client->dev)) { |
| pdata = gmin_camera_platform_data(&dev->sd, |
| ATOMISP_INPUT_FORMAT_RAW_10, |
| atomisp_bayer_order_bggr); |
| if (!pdata) { |
| dev_err(&client->dev, |
| "%s: failed to get acpi platform data\n", |
| __func__); |
| goto out_free; |
| } |
| ret = ov8858_s_config(&dev->sd, client->irq, pdata); |
| if (ret) { |
| dev_err(&client->dev, |
| "%s: failed to set config\n", __func__); |
| goto out_free; |
| } |
| ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA); |
| if (ret) { |
| dev_err(&client->dev, |
| "%s: failed to register subdev\n", __func__); |
| goto out_free; |
| } |
| } |
| /* |
| * sd->name is updated with sensor driver name by the v4l2. |
| * change it to sensor name in this case. |
| */ |
| snprintf(dev->sd.name, sizeof(dev->sd.name), "%s%x %d-%04x", |
| OV_SUBDEV_PREFIX, dev->sensor_id, |
| i2c_adapter_id(client->adapter), client->addr); |
| |
| 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.ops = &ov_entity_ops; |
| dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; |
| |
| ret = v4l2_ctrl_handler_init(&dev->ctrl_handler, ARRAY_SIZE(ctrls) + 1); |
| if (ret) { |
| ov8858_remove(client); |
| return ret; |
| } |
| |
| dev->run_mode = v4l2_ctrl_new_custom(&dev->ctrl_handler, |
| &ctrl_run_mode, NULL); |
| |
| for (i = 0; i < ARRAY_SIZE(ctrls); i++) |
| v4l2_ctrl_new_custom(&dev->ctrl_handler, &ctrls[i], NULL); |
| |
| if (dev->ctrl_handler.error) { |
| ov8858_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; |
| v4l2_ctrl_handler_setup(&dev->ctrl_handler); |
| |
| ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad); |
| if (ret) { |
| ov8858_remove(client); |
| return ret; |
| } |
| |
| return 0; |
| |
| out_free: |
| v4l2_device_unregister_subdev(&dev->sd); |
| kfree(dev); |
| return ret; |
| } |
| |
| static const struct i2c_device_id ov8858_id[] = { |
| {OV8858_NAME, 0}, |
| {} |
| }; |
| |
| MODULE_DEVICE_TABLE(i2c, ov8858_id); |
| |
| static const struct acpi_device_id ov8858_acpi_match[] = { |
| {"INT3477"}, |
| {}, |
| }; |
| |
| static struct i2c_driver ov8858_driver = { |
| .driver = { |
| .name = OV8858_NAME, |
| .acpi_match_table = ACPI_PTR(ov8858_acpi_match), |
| }, |
| .probe = ov8858_probe, |
| .remove = ov8858_remove, |
| .id_table = ov8858_id, |
| }; |
| |
| static __init int ov8858_init_mod(void) |
| { |
| return i2c_add_driver(&ov8858_driver); |
| } |
| |
| static __exit void ov8858_exit_mod(void) |
| { |
| i2c_del_driver(&ov8858_driver); |
| } |
| |
| module_init(ov8858_init_mod); |
| module_exit(ov8858_exit_mod); |
| |
| MODULE_DESCRIPTION("A low-level driver for Omnivision OV8858 sensors"); |
| MODULE_LICENSE("GPL"); |