| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Support for OmniVision OV5693 1080p HD camera sensor. |
| * |
| * Copyright (c) 2013 Intel Corporation. All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License version |
| * 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/kernel.h> |
| #include <linux/mm.h> |
| #include <linux/string.h> |
| #include <linux/errno.h> |
| #include <linux/init.h> |
| #include <linux/kmod.h> |
| #include <linux/device.h> |
| #include <linux/delay.h> |
| #include <linux/slab.h> |
| #include <linux/i2c.h> |
| #include <linux/moduleparam.h> |
| #include <media/v4l2-device.h> |
| #include <linux/io.h> |
| #include <linux/acpi.h> |
| #include "../../include/linux/atomisp_gmin_platform.h" |
| |
| #include "ov5693.h" |
| #include "ad5823.h" |
| |
| #define __cci_delay(t) \ |
| do { \ |
| if ((t) < 10) { \ |
| usleep_range((t) * 1000, ((t) + 1) * 1000); \ |
| } else { \ |
| msleep((t)); \ |
| } \ |
| } while (0) |
| |
| /* Value 30ms reached through experimentation on byt ecs. |
| * The DS specifies a much lower value but when using a smaller value |
| * the I2C bus sometimes locks up permanently when starting the camera. |
| * This issue could not be reproduced on cht, so we can reduce the |
| * delay value to a lower value when insmod. |
| */ |
| static uint up_delay = 30; |
| module_param(up_delay, uint, 0644); |
| MODULE_PARM_DESC(up_delay, |
| "Delay prior to the first CCI transaction for ov5693"); |
| |
| static int vcm_ad_i2c_wr8(struct i2c_client *client, u8 reg, u8 val) |
| { |
| int err; |
| struct i2c_msg msg; |
| u8 buf[2]; |
| |
| buf[0] = reg; |
| buf[1] = val; |
| |
| msg.addr = VCM_ADDR; |
| msg.flags = 0; |
| msg.len = 2; |
| msg.buf = &buf[0]; |
| |
| err = i2c_transfer(client->adapter, &msg, 1); |
| if (err != 1) { |
| dev_err(&client->dev, "%s: vcm i2c fail, err code = %d\n", |
| __func__, err); |
| return -EIO; |
| } |
| return 0; |
| } |
| |
| static int ad5823_i2c_write(struct i2c_client *client, u8 reg, u8 val) |
| { |
| struct i2c_msg msg; |
| u8 buf[2]; |
| |
| buf[0] = reg; |
| buf[1] = val; |
| msg.addr = AD5823_VCM_ADDR; |
| msg.flags = 0; |
| msg.len = 0x02; |
| msg.buf = &buf[0]; |
| |
| if (i2c_transfer(client->adapter, &msg, 1) != 1) |
| return -EIO; |
| return 0; |
| } |
| |
| static int ad5823_i2c_read(struct i2c_client *client, u8 reg, u8 *val) |
| { |
| struct i2c_msg msg[2]; |
| u8 buf[2]; |
| |
| buf[0] = reg; |
| buf[1] = 0; |
| |
| msg[0].addr = AD5823_VCM_ADDR; |
| msg[0].flags = 0; |
| msg[0].len = 0x01; |
| msg[0].buf = &buf[0]; |
| |
| msg[1].addr = 0x0c; |
| msg[1].flags = I2C_M_RD; |
| msg[1].len = 0x01; |
| msg[1].buf = &buf[1]; |
| *val = 0; |
| if (i2c_transfer(client->adapter, msg, 2) != 2) |
| return -EIO; |
| *val = buf[1]; |
| return 0; |
| } |
| |
| static const u32 ov5693_embedded_effective_size = 28; |
| |
| /* i2c read/write stuff */ |
| static int ov5693_read_reg(struct i2c_client *client, |
| u16 data_length, u16 reg, u16 *val) |
| { |
| int err; |
| struct i2c_msg msg[2]; |
| unsigned char data[6]; |
| |
| if (!client->adapter) { |
| dev_err(&client->dev, "%s error, no client->adapter\n", |
| __func__); |
| return -ENODEV; |
| } |
| |
| if (data_length != OV5693_8BIT && data_length != OV5693_16BIT |
| && data_length != OV5693_32BIT) { |
| dev_err(&client->dev, "%s error, invalid data length\n", |
| __func__); |
| return -EINVAL; |
| } |
| |
| memset(msg, 0, sizeof(msg)); |
| |
| msg[0].addr = client->addr; |
| msg[0].flags = 0; |
| msg[0].len = I2C_MSG_LENGTH; |
| msg[0].buf = data; |
| |
| /* high byte goes out first */ |
| data[0] = (u8)(reg >> 8); |
| data[1] = (u8)(reg & 0xff); |
| |
| msg[1].addr = client->addr; |
| msg[1].len = data_length; |
| msg[1].flags = I2C_M_RD; |
| msg[1].buf = data; |
| |
| err = i2c_transfer(client->adapter, msg, 2); |
| if (err != 2) { |
| if (err >= 0) |
| err = -EIO; |
| dev_err(&client->dev, |
| "read from offset 0x%x error %d", reg, err); |
| return err; |
| } |
| |
| *val = 0; |
| /* high byte comes first */ |
| if (data_length == OV5693_8BIT) |
| *val = (u8)data[0]; |
| else if (data_length == OV5693_16BIT) |
| *val = be16_to_cpu(*(__be16 *)&data[0]); |
| else |
| *val = be32_to_cpu(*(__be32 *)&data[0]); |
| |
| return 0; |
| } |
| |
| static int ov5693_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 vcm_dw_i2c_write(struct i2c_client *client, u16 data) |
| { |
| struct i2c_msg msg; |
| const int num_msg = 1; |
| int ret; |
| __be16 val; |
| |
| val = cpu_to_be16(data); |
| msg.addr = VCM_ADDR; |
| msg.flags = 0; |
| msg.len = OV5693_16BIT; |
| msg.buf = (void *)&val; |
| |
| ret = i2c_transfer(client->adapter, &msg, 1); |
| |
| return ret == num_msg ? 0 : -EIO; |
| } |
| |
| /* |
| * Theory: per datasheet, the two VCMs both allow for a 2-byte read. |
| * The DW9714 doesn't actually specify what this does (it has a |
| * two-byte write-only protocol, but specifies the read sequence as |
| * legal), but it returns the same data (zeroes) always, after an |
| * undocumented initial NAK. The AD5823 has a one-byte address |
| * register to which all writes go, and subsequent reads will cycle |
| * through the 8 bytes of registers. Notably, the default values (the |
| * device is always power-cycled affirmatively, so we can rely on |
| * these) in AD5823 are not pairwise repetitions of the same 16 bit |
| * word. So all we have to do is sequentially read two bytes at a |
| * time and see if we detect a difference in any of the first four |
| * pairs. |
| */ |
| static int vcm_detect(struct i2c_client *client) |
| { |
| int i, ret; |
| struct i2c_msg msg; |
| u16 data0 = 0, data; |
| |
| for (i = 0; i < 4; i++) { |
| msg.addr = VCM_ADDR; |
| msg.flags = I2C_M_RD; |
| msg.len = sizeof(data); |
| msg.buf = (u8 *)&data; |
| ret = i2c_transfer(client->adapter, &msg, 1); |
| |
| /* |
| * DW9714 always fails the first read and returns |
| * zeroes for subsequent ones |
| */ |
| if (i == 0 && ret == -EREMOTEIO) { |
| data0 = 0; |
| continue; |
| } |
| |
| if (i == 0) |
| data0 = data; |
| |
| if (data != data0) |
| return VCM_AD5823; |
| } |
| return ret == 1 ? VCM_DW9714 : ret; |
| } |
| |
| static int ov5693_write_reg(struct i2c_client *client, u16 data_length, |
| u16 reg, u16 val) |
| { |
| int ret; |
| unsigned char data[4] = {0}; |
| __be16 *wreg = (void *)data; |
| const u16 len = data_length + sizeof(u16); /* 16-bit address + data */ |
| |
| if (data_length != OV5693_8BIT && data_length != OV5693_16BIT) { |
| dev_err(&client->dev, |
| "%s error, invalid data_length\n", __func__); |
| return -EINVAL; |
| } |
| |
| /* high byte goes out first */ |
| *wreg = cpu_to_be16(reg); |
| |
| if (data_length == OV5693_8BIT) { |
| data[2] = (u8)(val); |
| } else { |
| /* OV5693_16BIT */ |
| __be16 *wdata = (void *)&data[2]; |
| |
| *wdata = cpu_to_be16(val); |
| } |
| |
| ret = ov5693_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; |
| } |
| |
| /* |
| * ov5693_write_reg_array - Initializes a list of OV5693 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(). |
| * |
| * __ov5693_flush_reg_array, __ov5693_buf_reg_array() and |
| * __ov5693_write_reg_is_consecutive() are internal functions to |
| * ov5693_write_reg_array_fast() and should be not used anywhere else. |
| * |
| */ |
| |
| static int __ov5693_flush_reg_array(struct i2c_client *client, |
| struct ov5693_write_ctrl *ctrl) |
| { |
| u16 size; |
| __be16 *reg = (void *)&ctrl->buffer.addr; |
| |
| if (ctrl->index == 0) |
| return 0; |
| |
| size = sizeof(u16) + ctrl->index; /* 16-bit address + data */ |
| |
| *reg = cpu_to_be16(ctrl->buffer.addr); |
| ctrl->index = 0; |
| |
| return ov5693_i2c_write(client, size, (u8 *)reg); |
| } |
| |
| static int __ov5693_buf_reg_array(struct i2c_client *client, |
| struct ov5693_write_ctrl *ctrl, |
| const struct ov5693_reg *next) |
| { |
| int size; |
| __be16 *data16; |
| |
| switch (next->type) { |
| case OV5693_8BIT: |
| size = 1; |
| ctrl->buffer.data[ctrl->index] = (u8)next->val; |
| break; |
| case OV5693_16BIT: |
| size = 2; |
| |
| data16 = (void *)&ctrl->buffer.data[ctrl->index]; |
| *data16 = cpu_to_be16((u16)next->val); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| /* When first item is added, we need to store its starting address */ |
| if (ctrl->index == 0) |
| ctrl->buffer.addr = next->reg; |
| |
| ctrl->index += size; |
| |
| /* |
| * Buffer cannot guarantee free space for u32? Better flush it to avoid |
| * possible lack of memory for next item. |
| */ |
| if (ctrl->index + sizeof(u16) >= OV5693_MAX_WRITE_BUF_SIZE) |
| return __ov5693_flush_reg_array(client, ctrl); |
| |
| return 0; |
| } |
| |
| static int __ov5693_write_reg_is_consecutive(struct i2c_client *client, |
| struct ov5693_write_ctrl *ctrl, |
| const struct ov5693_reg *next) |
| { |
| if (ctrl->index == 0) |
| return 1; |
| |
| return ctrl->buffer.addr + ctrl->index == next->reg; |
| } |
| |
| static int ov5693_write_reg_array(struct i2c_client *client, |
| const struct ov5693_reg *reglist) |
| { |
| const struct ov5693_reg *next = reglist; |
| struct ov5693_write_ctrl ctrl; |
| int err; |
| |
| ctrl.index = 0; |
| for (; next->type != OV5693_TOK_TERM; next++) { |
| switch (next->type & OV5693_TOK_MASK) { |
| case OV5693_TOK_DELAY: |
| err = __ov5693_flush_reg_array(client, &ctrl); |
| if (err) |
| return err; |
| msleep(next->val); |
| break; |
| default: |
| /* |
| * If next address is not consecutive, data needs to be |
| * flushed before proceed. |
| */ |
| if (!__ov5693_write_reg_is_consecutive(client, &ctrl, |
| next)) { |
| err = __ov5693_flush_reg_array(client, &ctrl); |
| if (err) |
| return err; |
| } |
| err = __ov5693_buf_reg_array(client, &ctrl, next); |
| if (err) { |
| dev_err(&client->dev, |
| "%s: write error, aborted\n", |
| __func__); |
| return err; |
| } |
| break; |
| } |
| } |
| |
| return __ov5693_flush_reg_array(client, &ctrl); |
| } |
| |
| static int ov5693_g_focal(struct v4l2_subdev *sd, s32 *val) |
| { |
| *val = (OV5693_FOCAL_LENGTH_NUM << 16) | OV5693_FOCAL_LENGTH_DEM; |
| return 0; |
| } |
| |
| static int ov5693_g_fnumber(struct v4l2_subdev *sd, s32 *val) |
| { |
| /*const f number for imx*/ |
| *val = (OV5693_F_NUMBER_DEFAULT_NUM << 16) | OV5693_F_NUMBER_DEM; |
| return 0; |
| } |
| |
| static int ov5693_g_fnumber_range(struct v4l2_subdev *sd, s32 *val) |
| { |
| *val = (OV5693_F_NUMBER_DEFAULT_NUM << 24) | |
| (OV5693_F_NUMBER_DEM << 16) | |
| (OV5693_F_NUMBER_DEFAULT_NUM << 8) | OV5693_F_NUMBER_DEM; |
| return 0; |
| } |
| |
| static int ov5693_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| |
| *val = ov5693_res[dev->fmt_idx].bin_factor_x; |
| |
| return 0; |
| } |
| |
| static int ov5693_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| |
| *val = ov5693_res[dev->fmt_idx].bin_factor_y; |
| |
| return 0; |
| } |
| |
| static int ov5693_get_intg_factor(struct i2c_client *client, |
| struct camera_mipi_info *info, |
| const struct ov5693_resolution *res) |
| { |
| struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| struct atomisp_sensor_mode_data *buf = &info->data; |
| unsigned int pix_clk_freq_hz; |
| u16 reg_val; |
| int ret; |
| |
| 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 = OV5693_COARSE_INTG_TIME_MIN; |
| buf->coarse_integration_time_max_margin = |
| OV5693_COARSE_INTG_TIME_MAX_MARGIN; |
| |
| buf->fine_integration_time_min = OV5693_FINE_INTG_TIME_MIN; |
| buf->fine_integration_time_max_margin = |
| OV5693_FINE_INTG_TIME_MAX_MARGIN; |
| |
| buf->fine_integration_time_def = OV5693_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 = ov5693_read_reg(client, OV5693_16BIT, |
| OV5693_HORIZONTAL_START_H, ®_val); |
| if (ret) |
| return ret; |
| buf->crop_horizontal_start = reg_val; |
| |
| ret = ov5693_read_reg(client, OV5693_16BIT, |
| OV5693_VERTICAL_START_H, ®_val); |
| if (ret) |
| return ret; |
| buf->crop_vertical_start = reg_val; |
| |
| ret = ov5693_read_reg(client, OV5693_16BIT, |
| OV5693_HORIZONTAL_END_H, ®_val); |
| if (ret) |
| return ret; |
| buf->crop_horizontal_end = reg_val; |
| |
| ret = ov5693_read_reg(client, OV5693_16BIT, |
| OV5693_VERTICAL_END_H, ®_val); |
| if (ret) |
| return ret; |
| buf->crop_vertical_end = reg_val; |
| |
| ret = ov5693_read_reg(client, OV5693_16BIT, |
| OV5693_HORIZONTAL_OUTPUT_SIZE_H, ®_val); |
| if (ret) |
| return ret; |
| buf->output_width = reg_val; |
| |
| ret = ov5693_read_reg(client, OV5693_16BIT, |
| OV5693_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 : 1; |
| buf->binning_factor_y = res->bin_factor_y ? |
| res->bin_factor_y : 1; |
| return 0; |
| } |
| |
| static long __ov5693_set_exposure(struct v4l2_subdev *sd, int coarse_itg, |
| int gain, int digitgain) |
| |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| u16 vts, hts; |
| int ret, exp_val; |
| |
| hts = ov5693_res[dev->fmt_idx].pixels_per_line; |
| vts = ov5693_res[dev->fmt_idx].lines_per_frame; |
| /* |
| * If coarse_itg is larger than 1<<15, can not write to reg directly. |
| * The way is to write coarse_itg/2 to the reg, meanwhile write 2*hts |
| * to the reg. |
| */ |
| if (coarse_itg > (1 << 15)) { |
| hts = hts * 2; |
| coarse_itg = (int)coarse_itg / 2; |
| } |
| /* group hold */ |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_GROUP_ACCESS, 0x00); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_GROUP_ACCESS); |
| return ret; |
| } |
| |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_TIMING_HTS_H, (hts >> 8) & 0xFF); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_TIMING_HTS_H); |
| return ret; |
| } |
| |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_TIMING_HTS_L, hts & 0xFF); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_TIMING_HTS_L); |
| return ret; |
| } |
| /* Increase the VTS to match exposure + MARGIN */ |
| if (coarse_itg > vts - OV5693_INTEGRATION_TIME_MARGIN) |
| vts = (u16)coarse_itg + OV5693_INTEGRATION_TIME_MARGIN; |
| |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_TIMING_VTS_H, (vts >> 8) & 0xFF); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_TIMING_VTS_H); |
| return ret; |
| } |
| |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_TIMING_VTS_L, vts & 0xFF); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_TIMING_VTS_L); |
| return ret; |
| } |
| |
| /* set exposure */ |
| |
| /* Lower four bit should be 0*/ |
| exp_val = coarse_itg << 4; |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_EXPOSURE_L, exp_val & 0xFF); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_EXPOSURE_L); |
| return ret; |
| } |
| |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_EXPOSURE_M, (exp_val >> 8) & 0xFF); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_EXPOSURE_M); |
| return ret; |
| } |
| |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_EXPOSURE_H, (exp_val >> 16) & 0x0F); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_EXPOSURE_H); |
| return ret; |
| } |
| |
| /* Analog gain */ |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_AGC_L, gain & 0xff); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_AGC_L); |
| return ret; |
| } |
| |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_AGC_H, (gain >> 8) & 0xff); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_AGC_H); |
| return ret; |
| } |
| |
| /* Digital gain */ |
| if (digitgain) { |
| ret = ov5693_write_reg(client, OV5693_16BIT, |
| OV5693_MWB_RED_GAIN_H, digitgain); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_MWB_RED_GAIN_H); |
| return ret; |
| } |
| |
| ret = ov5693_write_reg(client, OV5693_16BIT, |
| OV5693_MWB_GREEN_GAIN_H, digitgain); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_MWB_RED_GAIN_H); |
| return ret; |
| } |
| |
| ret = ov5693_write_reg(client, OV5693_16BIT, |
| OV5693_MWB_BLUE_GAIN_H, digitgain); |
| if (ret) { |
| dev_err(&client->dev, "%s: write %x error, aborted\n", |
| __func__, OV5693_MWB_RED_GAIN_H); |
| return ret; |
| } |
| } |
| |
| /* End group */ |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_GROUP_ACCESS, 0x10); |
| if (ret) |
| return ret; |
| |
| /* Delay launch group */ |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_GROUP_ACCESS, 0xa0); |
| if (ret) |
| return ret; |
| return ret; |
| } |
| |
| static int ov5693_set_exposure(struct v4l2_subdev *sd, int exposure, |
| int gain, int digitgain) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| int ret; |
| |
| mutex_lock(&dev->input_lock); |
| ret = __ov5693_set_exposure(sd, exposure, gain, digitgain); |
| mutex_unlock(&dev->input_lock); |
| |
| return ret; |
| } |
| |
| static long ov5693_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; |
| } |
| return ov5693_set_exposure(sd, coarse_itg, analog_gain, digital_gain); |
| } |
| |
| static int ov5693_read_otp_reg_array(struct i2c_client *client, u16 size, |
| u16 addr, u8 *buf) |
| { |
| u16 index; |
| int ret; |
| u16 *pVal = NULL; |
| |
| for (index = 0; index <= size; index++) { |
| pVal = (u16 *)(buf + index); |
| ret = |
| ov5693_read_reg(client, OV5693_8BIT, addr + index, |
| pVal); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int __ov5693_otp_read(struct v4l2_subdev *sd, u8 *buf) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| int ret; |
| int i; |
| u8 *b = buf; |
| |
| dev->otp_size = 0; |
| for (i = 1; i < OV5693_OTP_BANK_MAX; i++) { |
| /*set bank NO and OTP read mode. */ |
| ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_OTP_BANK_REG, |
| (i | 0xc0)); //[7:6] 2'b11 [5:0] bank no |
| if (ret) { |
| dev_err(&client->dev, "failed to prepare OTP page\n"); |
| return ret; |
| } |
| //pr_debug("write 0x%x->0x%x\n",OV5693_OTP_BANK_REG,(i|0xc0)); |
| |
| /*enable read */ |
| ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_OTP_READ_REG, |
| OV5693_OTP_MODE_READ); // enable :1 |
| if (ret) { |
| dev_err(&client->dev, |
| "failed to set OTP reading mode page"); |
| return ret; |
| } |
| //pr_debug("write 0x%x->0x%x\n",OV5693_OTP_READ_REG,OV5693_OTP_MODE_READ); |
| |
| /* Reading the OTP data array */ |
| ret = ov5693_read_otp_reg_array(client, OV5693_OTP_BANK_SIZE, |
| OV5693_OTP_START_ADDR, |
| b); |
| if (ret) { |
| dev_err(&client->dev, "failed to read OTP data\n"); |
| return ret; |
| } |
| |
| //pr_debug("BANK[%2d] %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", i, *b, *(b+1), *(b+2), *(b+3), *(b+4), *(b+5), *(b+6), *(b+7), *(b+8), *(b+9), *(b+10), *(b+11), *(b+12), *(b+13), *(b+14), *(b+15)); |
| |
| //Intel OTP map, try to read 320byts first. |
| if (i == 21) { |
| if ((*b) == 0) { |
| dev->otp_size = 320; |
| break; |
| } else { |
| b = buf; |
| continue; |
| } |
| } else if (i == |
| 24) { //if the first 320bytes data doesn't not exist, try to read the next 32bytes data. |
| if ((*b) == 0) { |
| dev->otp_size = 32; |
| break; |
| } else { |
| b = buf; |
| continue; |
| } |
| } else if (i == |
| 27) { //if the prvious 32bytes data doesn't exist, try to read the next 32bytes data again. |
| if ((*b) == 0) { |
| dev->otp_size = 32; |
| break; |
| } else { |
| dev->otp_size = 0; // no OTP data. |
| break; |
| } |
| } |
| |
| b = b + OV5693_OTP_BANK_SIZE; |
| } |
| return 0; |
| } |
| |
| /* |
| * Read otp data and store it into a kmalloced buffer. |
| * The caller must kfree the buffer when no more needed. |
| * @size: set to the size of the returned otp data. |
| */ |
| static void *ov5693_otp_read(struct v4l2_subdev *sd) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| u8 *buf; |
| int ret; |
| |
| buf = devm_kzalloc(&client->dev, (OV5693_OTP_DATA_SIZE + 16), GFP_KERNEL); |
| if (!buf) |
| return ERR_PTR(-ENOMEM); |
| |
| //otp valid after mipi on and sw stream on |
| ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_FRAME_OFF_NUM, 0x00); |
| |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_SW_STREAM, OV5693_START_STREAMING); |
| |
| ret = __ov5693_otp_read(sd, buf); |
| |
| //mipi off and sw stream off after otp read |
| ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_FRAME_OFF_NUM, 0x0f); |
| |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_SW_STREAM, OV5693_STOP_STREAMING); |
| |
| /* Driver has failed to find valid data */ |
| if (ret) { |
| dev_err(&client->dev, "sensor found no valid OTP data\n"); |
| return ERR_PTR(ret); |
| } |
| |
| return buf; |
| } |
| |
| static int ov5693_g_priv_int_data(struct v4l2_subdev *sd, |
| struct v4l2_private_int_data *priv) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| u8 __user *to = priv->data; |
| u32 read_size = priv->size; |
| int ret; |
| |
| /* No need to copy data if size is 0 */ |
| if (!read_size) |
| goto out; |
| |
| if (IS_ERR(dev->otp_data)) { |
| dev_err(&client->dev, "OTP data not available"); |
| return PTR_ERR(dev->otp_data); |
| } |
| |
| /* Correct read_size value only if bigger than maximum */ |
| if (read_size > OV5693_OTP_DATA_SIZE) |
| read_size = OV5693_OTP_DATA_SIZE; |
| |
| ret = copy_to_user(to, dev->otp_data, read_size); |
| if (ret) { |
| dev_err(&client->dev, "%s: failed to copy OTP data to user\n", |
| __func__); |
| return -EFAULT; |
| } |
| |
| pr_debug("%s read_size:%d\n", __func__, read_size); |
| |
| out: |
| /* Return correct size */ |
| priv->size = dev->otp_size; |
| |
| return 0; |
| } |
| |
| static long ov5693_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) |
| { |
| switch (cmd) { |
| case ATOMISP_IOC_S_EXPOSURE: |
| return ov5693_s_exposure(sd, arg); |
| case ATOMISP_IOC_G_SENSOR_PRIV_INT_DATA: |
| return ov5693_g_priv_int_data(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 ov5693_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 = ov5693_read_reg(client, OV5693_8BIT, |
| OV5693_EXPOSURE_L, |
| ®_v); |
| if (ret) |
| goto err; |
| |
| ret = ov5693_read_reg(client, OV5693_8BIT, |
| OV5693_EXPOSURE_M, |
| ®_v2); |
| if (ret) |
| goto err; |
| |
| reg_v += reg_v2 << 8; |
| ret = ov5693_read_reg(client, OV5693_8BIT, |
| OV5693_EXPOSURE_H, |
| ®_v2); |
| if (ret) |
| goto err; |
| |
| *value = reg_v + (((u32)reg_v2 << 16)); |
| err: |
| return ret; |
| } |
| |
| static int ad5823_t_focus_vcm(struct v4l2_subdev *sd, u16 val) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret; |
| u8 vcm_code; |
| |
| ret = ad5823_i2c_read(client, AD5823_REG_VCM_CODE_MSB, &vcm_code); |
| if (ret) |
| return ret; |
| |
| /* set reg VCM_CODE_MSB Bit[1:0] */ |
| vcm_code = (vcm_code & VCM_CODE_MSB_MASK) | |
| ((val >> 8) & ~VCM_CODE_MSB_MASK); |
| ret = ad5823_i2c_write(client, AD5823_REG_VCM_CODE_MSB, vcm_code); |
| if (ret) |
| return ret; |
| |
| /* set reg VCM_CODE_LSB Bit[7:0] */ |
| ret = ad5823_i2c_write(client, AD5823_REG_VCM_CODE_LSB, (val & 0xff)); |
| if (ret) |
| return ret; |
| |
| /* set required vcm move time */ |
| vcm_code = AD5823_RESONANCE_PERIOD / AD5823_RESONANCE_COEF |
| - AD5823_HIGH_FREQ_RANGE; |
| ret = ad5823_i2c_write(client, AD5823_REG_VCM_MOVE_TIME, vcm_code); |
| |
| return ret; |
| } |
| |
| static int ad5823_t_focus_abs(struct v4l2_subdev *sd, s32 value) |
| { |
| value = min(value, AD5823_MAX_FOCUS_POS); |
| return ad5823_t_focus_vcm(sd, value); |
| } |
| |
| static int ov5693_t_focus_abs(struct v4l2_subdev *sd, s32 value) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret = 0; |
| |
| dev_dbg(&client->dev, "%s: FOCUS_POS: 0x%x\n", __func__, value); |
| value = clamp(value, 0, OV5693_VCM_MAX_FOCUS_POS); |
| if (dev->vcm == VCM_DW9714) { |
| if (dev->vcm_update) { |
| ret = vcm_dw_i2c_write(client, VCM_PROTECTION_OFF); |
| if (ret) |
| return ret; |
| ret = vcm_dw_i2c_write(client, DIRECT_VCM); |
| if (ret) |
| return ret; |
| ret = vcm_dw_i2c_write(client, VCM_PROTECTION_ON); |
| if (ret) |
| return ret; |
| dev->vcm_update = false; |
| } |
| ret = vcm_dw_i2c_write(client, |
| vcm_val(value, VCM_DEFAULT_S)); |
| } else if (dev->vcm == VCM_AD5823) { |
| ad5823_t_focus_abs(sd, value); |
| } |
| if (ret == 0) { |
| dev->number_of_steps = value - dev->focus; |
| dev->focus = value; |
| dev->timestamp_t_focus_abs = ktime_get(); |
| } else |
| dev_err(&client->dev, |
| "%s: i2c failed. ret %d\n", __func__, ret); |
| |
| return ret; |
| } |
| |
| static int ov5693_t_focus_rel(struct v4l2_subdev *sd, s32 value) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| |
| return ov5693_t_focus_abs(sd, dev->focus + value); |
| } |
| |
| #define DELAY_PER_STEP_NS 1000000 |
| #define DELAY_MAX_PER_STEP_NS (1000000 * 1023) |
| static int ov5693_q_focus_status(struct v4l2_subdev *sd, s32 *value) |
| { |
| u32 status = 0; |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| ktime_t temptime; |
| ktime_t timedelay = ns_to_ktime(min_t(u32, |
| abs(dev->number_of_steps) * DELAY_PER_STEP_NS, |
| DELAY_MAX_PER_STEP_NS)); |
| |
| temptime = ktime_sub(ktime_get(), (dev->timestamp_t_focus_abs)); |
| if (ktime_compare(temptime, timedelay) <= 0) { |
| status |= ATOMISP_FOCUS_STATUS_MOVING; |
| status |= ATOMISP_FOCUS_HP_IN_PROGRESS; |
| } else { |
| status |= ATOMISP_FOCUS_STATUS_ACCEPTS_NEW_MOVE; |
| status |= ATOMISP_FOCUS_HP_COMPLETE; |
| } |
| |
| *value = status; |
| |
| return 0; |
| } |
| |
| static int ov5693_q_focus_abs(struct v4l2_subdev *sd, s32 *value) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| s32 val; |
| |
| ov5693_q_focus_status(sd, &val); |
| |
| if (val & ATOMISP_FOCUS_STATUS_MOVING) |
| *value = dev->focus - dev->number_of_steps; |
| else |
| *value = dev->focus; |
| |
| return 0; |
| } |
| |
| static int ov5693_t_vcm_slew(struct v4l2_subdev *sd, s32 value) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| |
| dev->number_of_steps = value; |
| dev->vcm_update = true; |
| return 0; |
| } |
| |
| static int ov5693_t_vcm_timing(struct v4l2_subdev *sd, s32 value) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| |
| dev->number_of_steps = value; |
| dev->vcm_update = true; |
| return 0; |
| } |
| |
| static int ov5693_s_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct ov5693_device *dev = |
| container_of(ctrl->handler, struct ov5693_device, ctrl_handler); |
| struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); |
| int ret = 0; |
| |
| switch (ctrl->id) { |
| case V4L2_CID_FOCUS_ABSOLUTE: |
| dev_dbg(&client->dev, "%s: CID_FOCUS_ABSOLUTE:%d.\n", |
| __func__, ctrl->val); |
| ret = ov5693_t_focus_abs(&dev->sd, ctrl->val); |
| break; |
| case V4L2_CID_FOCUS_RELATIVE: |
| dev_dbg(&client->dev, "%s: CID_FOCUS_RELATIVE:%d.\n", |
| __func__, ctrl->val); |
| ret = ov5693_t_focus_rel(&dev->sd, ctrl->val); |
| break; |
| case V4L2_CID_VCM_SLEW: |
| ret = ov5693_t_vcm_slew(&dev->sd, ctrl->val); |
| break; |
| case V4L2_CID_VCM_TIMING: |
| ret = ov5693_t_vcm_timing(&dev->sd, ctrl->val); |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| return ret; |
| } |
| |
| static int ov5693_g_volatile_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct ov5693_device *dev = |
| container_of(ctrl->handler, struct ov5693_device, ctrl_handler); |
| int ret = 0; |
| |
| switch (ctrl->id) { |
| case V4L2_CID_EXPOSURE_ABSOLUTE: |
| ret = ov5693_q_exposure(&dev->sd, &ctrl->val); |
| break; |
| case V4L2_CID_FOCAL_ABSOLUTE: |
| ret = ov5693_g_focal(&dev->sd, &ctrl->val); |
| break; |
| case V4L2_CID_FNUMBER_ABSOLUTE: |
| ret = ov5693_g_fnumber(&dev->sd, &ctrl->val); |
| break; |
| case V4L2_CID_FNUMBER_RANGE: |
| ret = ov5693_g_fnumber_range(&dev->sd, &ctrl->val); |
| break; |
| case V4L2_CID_FOCUS_ABSOLUTE: |
| ret = ov5693_q_focus_abs(&dev->sd, &ctrl->val); |
| break; |
| case V4L2_CID_FOCUS_STATUS: |
| ret = ov5693_q_focus_status(&dev->sd, &ctrl->val); |
| break; |
| case V4L2_CID_BIN_FACTOR_HORZ: |
| ret = ov5693_g_bin_factor_x(&dev->sd, &ctrl->val); |
| break; |
| case V4L2_CID_BIN_FACTOR_VERT: |
| ret = ov5693_g_bin_factor_y(&dev->sd, &ctrl->val); |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static const struct v4l2_ctrl_ops ctrl_ops = { |
| .s_ctrl = ov5693_s_ctrl, |
| .g_volatile_ctrl = ov5693_g_volatile_ctrl |
| }; |
| |
| static const struct v4l2_ctrl_config ov5693_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 = OV5693_FOCAL_LENGTH_DEFAULT, |
| .max = OV5693_FOCAL_LENGTH_DEFAULT, |
| .step = 0x01, |
| .def = OV5693_FOCAL_LENGTH_DEFAULT, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_FNUMBER_ABSOLUTE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "f-number", |
| .min = OV5693_F_NUMBER_DEFAULT, |
| .max = OV5693_F_NUMBER_DEFAULT, |
| .step = 0x01, |
| .def = OV5693_F_NUMBER_DEFAULT, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_FNUMBER_RANGE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "f-number range", |
| .min = OV5693_F_NUMBER_RANGE, |
| .max = OV5693_F_NUMBER_RANGE, |
| .step = 0x01, |
| .def = OV5693_F_NUMBER_RANGE, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_FOCUS_ABSOLUTE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "focus move absolute", |
| .min = 0, |
| .max = OV5693_VCM_MAX_FOCUS_POS, |
| .step = 1, |
| .def = 0, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_FOCUS_RELATIVE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "focus move relative", |
| .min = OV5693_VCM_MAX_FOCUS_NEG, |
| .max = OV5693_VCM_MAX_FOCUS_POS, |
| .step = 1, |
| .def = 0, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_FOCUS_STATUS, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "focus status", |
| .min = 0, |
| .max = 100, /* allow enum to grow in the future */ |
| .step = 1, |
| .def = 0, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_VCM_SLEW, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "vcm slew", |
| .min = 0, |
| .max = OV5693_VCM_SLEW_STEP_MAX, |
| .step = 1, |
| .def = 0, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_VCM_TIMING, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "vcm step time", |
| .min = 0, |
| .max = OV5693_VCM_SLEW_TIME_MAX, |
| .step = 1, |
| .def = 0, |
| .flags = 0, |
| }, |
| { |
| .ops = &ctrl_ops, |
| .id = V4L2_CID_BIN_FACTOR_HORZ, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "horizontal binning factor", |
| .min = 0, |
| .max = OV5693_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 = OV5693_BIN_FACTOR_MAX, |
| .step = 1, |
| .def = 0, |
| .flags = 0, |
| }, |
| }; |
| |
| static int ov5693_init(struct v4l2_subdev *sd) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret; |
| |
| pr_info("%s\n", __func__); |
| mutex_lock(&dev->input_lock); |
| dev->vcm_update = false; |
| |
| if (dev->vcm == VCM_AD5823) { |
| ret = vcm_ad_i2c_wr8(client, 0x01, 0x01); /* vcm init test */ |
| if (ret) |
| dev_err(&client->dev, |
| "vcm reset failed\n"); |
| /*change the mode*/ |
| ret = ad5823_i2c_write(client, AD5823_REG_VCM_CODE_MSB, |
| AD5823_RING_CTRL_ENABLE); |
| if (ret) |
| dev_err(&client->dev, |
| "vcm enable ringing failed\n"); |
| ret = ad5823_i2c_write(client, AD5823_REG_MODE, |
| AD5823_ARC_RES1); |
| if (ret) |
| dev_err(&client->dev, |
| "vcm change mode failed\n"); |
| } |
| |
| /*change initial focus value for ad5823*/ |
| if (dev->vcm == VCM_AD5823) { |
| dev->focus = AD5823_INIT_FOCUS_POS; |
| ov5693_t_focus_abs(sd, AD5823_INIT_FOCUS_POS); |
| } else { |
| dev->focus = 0; |
| ov5693_t_focus_abs(sd, 0); |
| } |
| |
| mutex_unlock(&dev->input_lock); |
| |
| return 0; |
| } |
| |
| static int power_ctrl(struct v4l2_subdev *sd, bool flag) |
| { |
| int ret; |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| |
| if (!dev || !dev->platform_data) |
| return -ENODEV; |
| |
| /* |
| * This driver assumes "internal DVDD, PWDNB tied to DOVDD". |
| * In this set up only gpio0 (XSHUTDN) should be available |
| * but in some products (for example ECS) gpio1 (PWDNB) is |
| * also available. If gpio1 is available we emulate it being |
| * tied to DOVDD here. |
| */ |
| if (flag) { |
| ret = dev->platform_data->v2p8_ctrl(sd, 1); |
| dev->platform_data->gpio1_ctrl(sd, 1); |
| if (ret == 0) { |
| ret = dev->platform_data->v1p8_ctrl(sd, 1); |
| if (ret) { |
| dev->platform_data->gpio1_ctrl(sd, 0); |
| ret = dev->platform_data->v2p8_ctrl(sd, 0); |
| } |
| } |
| } else { |
| dev->platform_data->gpio1_ctrl(sd, 0); |
| ret = dev->platform_data->v1p8_ctrl(sd, 0); |
| ret |= dev->platform_data->v2p8_ctrl(sd, 0); |
| } |
| |
| return ret; |
| } |
| |
| static int gpio_ctrl(struct v4l2_subdev *sd, bool flag) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| |
| if (!dev || !dev->platform_data) |
| return -ENODEV; |
| |
| return dev->platform_data->gpio0_ctrl(sd, flag); |
| } |
| |
| static int __power_up(struct v4l2_subdev *sd) |
| { |
| struct ov5693_device *dev = to_ov5693_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 */ |
| /* add this delay time to 10~11ms*/ |
| usleep_range(10000, 11000); |
| |
| /* 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; |
| |
| __cci_delay(up_delay); |
| |
| 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 ov5693_device *dev = to_ov5693_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret = 0; |
| |
| dev->focus = OV5693_INVALID_CONFIG; |
| 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 power_up(struct v4l2_subdev *sd) |
| { |
| static const int retry_count = 4; |
| int i, ret; |
| |
| for (i = 0; i < retry_count; i++) { |
| ret = __power_up(sd); |
| if (!ret) |
| return 0; |
| |
| power_down(sd); |
| } |
| return ret; |
| } |
| |
| static int ov5693_s_power(struct v4l2_subdev *sd, int on) |
| { |
| int ret; |
| |
| pr_info("%s: on %d\n", __func__, on); |
| if (on == 0) |
| return power_down(sd); |
| else { |
| ret = power_up(sd); |
| if (!ret) { |
| ret = ov5693_init(sd); |
| /* restore settings */ |
| ov5693_res = ov5693_res_preview; |
| N_RES = N_RES_PREVIEW; |
| } |
| } |
| return ret; |
| } |
| |
| /* |
| * 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 ov5693_resolution *res, u32 w, 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; |
| } |
| |
| /* Return the nearest higher resolution index |
| * Firstly try to find the approximate aspect ratio resolution |
| * If we find multiple same AR resolutions, choose the |
| * minimal size. |
| */ |
| static int nearest_resolution_index(int w, int h) |
| { |
| int i; |
| int idx = -1; |
| int dist; |
| int min_dist = INT_MAX; |
| int min_res_w = INT_MAX; |
| struct ov5693_resolution *tmp_res = NULL; |
| |
| for (i = 0; i < N_RES; i++) { |
| tmp_res = &ov5693_res[i]; |
| dist = distance(tmp_res, w, h); |
| if (dist == -1) |
| continue; |
| if (dist < min_dist) { |
| min_dist = dist; |
| idx = i; |
| min_res_w = ov5693_res[i].width; |
| continue; |
| } |
| if (dist == min_dist && ov5693_res[i].width < min_res_w) |
| idx = i; |
| } |
| |
| return idx; |
| } |
| |
| static int get_resolution_index(int w, int h) |
| { |
| int i; |
| |
| for (i = 0; i < N_RES; i++) { |
| if (w != ov5693_res[i].width) |
| continue; |
| if (h != ov5693_res[i].height) |
| continue; |
| |
| return i; |
| } |
| |
| return -1; |
| } |
| |
| /* TODO: remove it. */ |
| static int startup(struct v4l2_subdev *sd) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret = 0; |
| |
| ret = ov5693_write_reg(client, OV5693_8BIT, |
| OV5693_SW_RESET, 0x01); |
| if (ret) { |
| dev_err(&client->dev, "ov5693 reset err.\n"); |
| return ret; |
| } |
| |
| ret = ov5693_write_reg_array(client, ov5693_global_setting); |
| if (ret) { |
| dev_err(&client->dev, "ov5693 write register err.\n"); |
| return ret; |
| } |
| |
| ret = ov5693_write_reg_array(client, ov5693_res[dev->fmt_idx].regs); |
| if (ret) { |
| dev_err(&client->dev, "ov5693 write register err.\n"); |
| return ret; |
| } |
| |
| return ret; |
| } |
| |
| static int ov5693_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 ov5693_device *dev = to_ov5693_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct camera_mipi_info *ov5693_info = NULL; |
| int ret = 0; |
| int idx; |
| |
| if (format->pad) |
| return -EINVAL; |
| if (!fmt) |
| return -EINVAL; |
| ov5693_info = v4l2_get_subdev_hostdata(sd); |
| if (!ov5693_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 = ov5693_res[N_RES - 1].width; |
| fmt->height = ov5693_res[N_RES - 1].height; |
| } else { |
| fmt->width = ov5693_res[idx].width; |
| fmt->height = ov5693_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); |
| if (dev->fmt_idx == -1) { |
| dev_err(&client->dev, "get resolution fail\n"); |
| mutex_unlock(&dev->input_lock); |
| return -EINVAL; |
| } |
| |
| ret = startup(sd); |
| if (ret) { |
| int i = 0; |
| |
| dev_err(&client->dev, "ov5693 startup err, retry to power up\n"); |
| for (i = 0; i < OV5693_POWER_UP_RETRY_NUM; i++) { |
| dev_err(&client->dev, |
| "ov5693 retry to power up %d/%d times, result: ", |
| i + 1, OV5693_POWER_UP_RETRY_NUM); |
| power_down(sd); |
| ret = power_up(sd); |
| if (!ret) { |
| mutex_unlock(&dev->input_lock); |
| ov5693_init(sd); |
| mutex_lock(&dev->input_lock); |
| } else { |
| dev_err(&client->dev, "power up failed, continue\n"); |
| continue; |
| } |
| ret = startup(sd); |
| if (ret) { |
| dev_err(&client->dev, " startup FAILED!\n"); |
| } else { |
| dev_err(&client->dev, " startup SUCCESS!\n"); |
| break; |
| } |
| } |
| } |
| |
| /* |
| * After sensor settings are set to HW, sometimes stream is started. |
| * This would cause ISP timeout because ISP is not ready to receive |
| * data yet. So add stop streaming here. |
| */ |
| ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_SW_STREAM, |
| OV5693_STOP_STREAMING); |
| if (ret) |
| dev_warn(&client->dev, "ov5693 stream off err\n"); |
| |
| ret = ov5693_get_intg_factor(client, ov5693_info, |
| &ov5693_res[dev->fmt_idx]); |
| if (ret) { |
| dev_err(&client->dev, "failed to get integration_factor\n"); |
| goto err; |
| } |
| |
| ov5693_info->metadata_width = fmt->width * 10 / 8; |
| ov5693_info->metadata_height = 1; |
| ov5693_info->metadata_effective_width = &ov5693_embedded_effective_size; |
| |
| err: |
| mutex_unlock(&dev->input_lock); |
| return ret; |
| } |
| |
| static int ov5693_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 ov5693_device *dev = to_ov5693_sensor(sd); |
| |
| if (format->pad) |
| return -EINVAL; |
| |
| if (!fmt) |
| return -EINVAL; |
| |
| fmt->width = ov5693_res[dev->fmt_idx].width; |
| fmt->height = ov5693_res[dev->fmt_idx].height; |
| fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; |
| |
| return 0; |
| } |
| |
| static int ov5693_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 = ov5693_read_reg(client, OV5693_8BIT, |
| OV5693_SC_CMMN_CHIP_ID_H, &high); |
| if (ret) { |
| dev_err(&client->dev, "sensor_id_high = 0x%x\n", high); |
| return -ENODEV; |
| } |
| ret = ov5693_read_reg(client, OV5693_8BIT, |
| OV5693_SC_CMMN_CHIP_ID_L, &low); |
| id = ((((u16)high) << 8) | (u16)low); |
| |
| if (id != OV5693_ID) { |
| dev_err(&client->dev, "sensor ID error 0x%x\n", id); |
| return -ENODEV; |
| } |
| |
| ret = ov5693_read_reg(client, OV5693_8BIT, |
| OV5693_SC_CMMN_SUB_ID, &high); |
| revision = (u8)high & 0x0f; |
| |
| dev_dbg(&client->dev, "sensor_revision = 0x%x\n", revision); |
| dev_dbg(&client->dev, "detect ov5693 success\n"); |
| return 0; |
| } |
| |
| static int ov5693_s_stream(struct v4l2_subdev *sd, int enable) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret; |
| |
| mutex_lock(&dev->input_lock); |
| |
| ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_SW_STREAM, |
| enable ? OV5693_START_STREAMING : |
| OV5693_STOP_STREAMING); |
| |
| mutex_unlock(&dev->input_lock); |
| |
| return ret; |
| } |
| |
| static int ov5693_s_config(struct v4l2_subdev *sd, |
| int irq, void *platform_data) |
| { |
| struct ov5693_device *dev = to_ov5693_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, "ov5693 power-off err.\n"); |
| goto fail_power_off; |
| } |
| |
| ret = power_up(sd); |
| if (ret) { |
| dev_err(&client->dev, "ov5693 power-up err.\n"); |
| goto fail_power_on; |
| } |
| |
| if (!dev->vcm) |
| dev->vcm = vcm_detect(client); |
| |
| ret = dev->platform_data->csi_cfg(sd, 1); |
| if (ret) |
| goto fail_csi_cfg; |
| |
| /* config & detect sensor */ |
| ret = ov5693_detect(client); |
| if (ret) { |
| dev_err(&client->dev, "ov5693_detect err s_config.\n"); |
| goto fail_csi_cfg; |
| } |
| |
| dev->otp_data = ov5693_otp_read(sd); |
| |
| /* turn off sensor, after probed */ |
| ret = power_down(sd); |
| if (ret) { |
| dev_err(&client->dev, "ov5693 power-off err.\n"); |
| goto fail_csi_cfg; |
| } |
| mutex_unlock(&dev->input_lock); |
| |
| return ret; |
| |
| 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 ov5693_g_frame_interval(struct v4l2_subdev *sd, |
| struct v4l2_subdev_frame_interval *interval) |
| { |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| |
| interval->interval.numerator = 1; |
| interval->interval.denominator = ov5693_res[dev->fmt_idx].fps; |
| |
| return 0; |
| } |
| |
| static int ov5693_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 ov5693_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 = ov5693_res[index].width; |
| fse->min_height = ov5693_res[index].height; |
| fse->max_width = ov5693_res[index].width; |
| fse->max_height = ov5693_res[index].height; |
| |
| return 0; |
| } |
| |
| static const struct v4l2_subdev_video_ops ov5693_video_ops = { |
| .s_stream = ov5693_s_stream, |
| .g_frame_interval = ov5693_g_frame_interval, |
| }; |
| |
| static const struct v4l2_subdev_core_ops ov5693_core_ops = { |
| .s_power = ov5693_s_power, |
| .ioctl = ov5693_ioctl, |
| }; |
| |
| static const struct v4l2_subdev_pad_ops ov5693_pad_ops = { |
| .enum_mbus_code = ov5693_enum_mbus_code, |
| .enum_frame_size = ov5693_enum_frame_size, |
| .get_fmt = ov5693_get_fmt, |
| .set_fmt = ov5693_set_fmt, |
| }; |
| |
| static const struct v4l2_subdev_ops ov5693_ops = { |
| .core = &ov5693_core_ops, |
| .video = &ov5693_video_ops, |
| .pad = &ov5693_pad_ops, |
| }; |
| |
| static int ov5693_remove(struct i2c_client *client) |
| { |
| struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| struct ov5693_device *dev = to_ov5693_sensor(sd); |
| |
| dev_dbg(&client->dev, "ov5693_remove...\n"); |
| |
| dev->platform_data->csi_cfg(sd, 0); |
| |
| v4l2_device_unregister_subdev(sd); |
| |
| atomisp_gmin_remove_subdev(sd); |
| |
| media_entity_cleanup(&dev->sd.entity); |
| v4l2_ctrl_handler_free(&dev->ctrl_handler); |
| kfree(dev); |
| |
| return 0; |
| } |
| |
| static int ov5693_probe(struct i2c_client *client) |
| { |
| struct ov5693_device *dev; |
| int i2c; |
| int ret; |
| void *pdata; |
| unsigned int i; |
| |
| /* |
| * Firmware workaround: Some modules use a "secondary default" |
| * address of 0x10 which doesn't appear on schematics, and |
| * some BIOS versions haven't gotten the memo. Work around |
| * via config. |
| */ |
| i2c = gmin_get_var_int(&client->dev, false, "I2CAddr", -1); |
| if (i2c != -1) { |
| dev_info(&client->dev, |
| "Overriding firmware-provided I2C address (0x%x) with 0x%x\n", |
| client->addr, i2c); |
| client->addr = i2c; |
| } |
| |
| 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, &ov5693_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 = ov5693_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(ov5693_controls)); |
| if (ret) { |
| ov5693_remove(client); |
| return ret; |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(ov5693_controls); i++) |
| v4l2_ctrl_new_custom(&dev->ctrl_handler, &ov5693_controls[i], |
| NULL); |
| |
| if (dev->ctrl_handler.error) { |
| ov5693_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) |
| ov5693_remove(client); |
| |
| return ret; |
| out_free: |
| v4l2_device_unregister_subdev(&dev->sd); |
| kfree(dev); |
| return ret; |
| } |
| |
| static const struct acpi_device_id ov5693_acpi_match[] = { |
| {"INT33BE"}, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match); |
| |
| static struct i2c_driver ov5693_driver = { |
| .driver = { |
| .name = "ov5693", |
| .acpi_match_table = ov5693_acpi_match, |
| }, |
| .probe_new = ov5693_probe, |
| .remove = ov5693_remove, |
| }; |
| module_i2c_driver(ov5693_driver); |
| |
| MODULE_DESCRIPTION("A low-level driver for OmniVision 5693 sensors"); |
| MODULE_LICENSE("GPL"); |