diff options
Diffstat (limited to 'drivers/staging/media/atomisp/i2c/ov8858.c')
| -rw-r--r-- | drivers/staging/media/atomisp/i2c/ov8858.c | 2169 |
1 files changed, 0 insertions, 2169 deletions
diff --git a/drivers/staging/media/atomisp/i2c/ov8858.c b/drivers/staging/media/atomisp/i2c/ov8858.c deleted file mode 100644 index 3cf8c710ac65..000000000000 --- a/drivers/staging/media/atomisp/i2c/ov8858.c +++ /dev/null @@ -1,2169 +0,0 @@ -/* - * 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. - * - * - */ - -#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) { - 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; - - 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; - - 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); - - 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: - 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); - - 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) -{ - 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) - return -ENOMEM; - - mutex_init(&dev->input_lock); - - 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); - - 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 acpi_device_id ov8858_acpi_match[] = { - {"INT3477"}, - {}, -}; -MODULE_DEVICE_TABLE(acpi, ov8858_acpi_match); - -static struct i2c_driver ov8858_driver = { - .driver = { - .name = "ov8858", - .acpi_match_table = ov8858_acpi_match, - }, - .probe_new = ov8858_probe, - .remove = ov8858_remove, -}; -module_i2c_driver(ov8858_driver); - -MODULE_DESCRIPTION("A low-level driver for Omnivision OV8858 sensors"); -MODULE_LICENSE("GPL"); |