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Diffstat (limited to 'drivers/staging/media/atomisp/i2c/ov2680.c')
-rw-r--r--drivers/staging/media/atomisp/i2c/ov2680.c1559
1 files changed, 1559 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/i2c/ov2680.c b/drivers/staging/media/atomisp/i2c/ov2680.c
new file mode 100644
index 0000000..5660910
--- /dev/null
+++ b/drivers/staging/media/atomisp/i2c/ov2680.c
@@ -0,0 +1,1559 @@
+/*
+ * Support for OmniVision OV2680 1080p HD camera sensor.
+ *
+ * Copyright (c) 2013 Intel Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <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/gpio.h>
+#include <linux/moduleparam.h>
+#include <media/v4l2-device.h>
+#include <linux/io.h>
+#include <linux/acpi.h>
+#include "../include/linux/atomisp_gmin_platform.h"
+
+#include "ov2680.h"
+
+static int h_flag = 0;
+static int v_flag = 0;
+static enum atomisp_bayer_order ov2680_bayer_order_mapping[] = {
+ atomisp_bayer_order_bggr,
+ atomisp_bayer_order_grbg,
+ atomisp_bayer_order_gbrg,
+ atomisp_bayer_order_rggb,
+};
+
+/* i2c read/write stuff */
+static int ov2680_read_reg(struct i2c_client *client,
+ 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 != OV2680_8BIT && data_length != OV2680_16BIT
+ && data_length != OV2680_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 == OV2680_8BIT)
+ *val = (u8)data[0];
+ else if (data_length == OV2680_16BIT)
+ *val = be16_to_cpu(*(u16 *)&data[0]);
+ else
+ *val = be32_to_cpu(*(u32 *)&data[0]);
+ //dev_dbg(&client->dev, "++++i2c read adr%x = %x\n", reg,*val);
+ return 0;
+}
+
+static int ov2680_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);
+ //dev_dbg(&client->dev, "+++i2c write reg=%x->%x\n", data[0]*256 +data[1],data[2]);
+ return ret == num_msg ? 0 : -EIO;
+}
+
+static int ov2680_write_reg(struct i2c_client *client, u16 data_length,
+ u16 reg, u16 val)
+{
+ int ret;
+ unsigned char data[4] = {0};
+ u16 *wreg = (u16 *)data;
+ const u16 len = data_length + sizeof(u16); /* 16-bit address + data */
+
+ if (data_length != OV2680_8BIT && data_length != OV2680_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 == OV2680_8BIT) {
+ data[2] = (u8)(val);
+ } else {
+ /* OV2680_16BIT */
+ u16 *wdata = (u16 *)&data[2];
+ *wdata = cpu_to_be16(val);
+ }
+
+ ret = ov2680_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;
+}
+
+/*
+ * ov2680_write_reg_array - Initializes a list of OV2680 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().
+ *
+ * __ov2680_flush_reg_array, __ov2680_buf_reg_array() and
+ * __ov2680_write_reg_is_consecutive() are internal functions to
+ * ov2680_write_reg_array_fast() and should be not used anywhere else.
+ *
+ */
+
+static int __ov2680_flush_reg_array(struct i2c_client *client,
+ struct ov2680_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 ov2680_i2c_write(client, size, (u8 *)&ctrl->buffer);
+}
+
+static int __ov2680_buf_reg_array(struct i2c_client *client,
+ struct ov2680_write_ctrl *ctrl,
+ const struct ov2680_reg *next)
+{
+ int size;
+ u16 *data16;
+
+ switch (next->type) {
+ case OV2680_8BIT:
+ size = 1;
+ ctrl->buffer.data[ctrl->index] = (u8)next->val;
+ break;
+ case OV2680_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->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) >= OV2680_MAX_WRITE_BUF_SIZE)
+ return __ov2680_flush_reg_array(client, ctrl);
+
+ return 0;
+}
+
+static int __ov2680_write_reg_is_consecutive(struct i2c_client *client,
+ struct ov2680_write_ctrl *ctrl,
+ const struct ov2680_reg *next)
+{
+ if (ctrl->index == 0)
+ return 1;
+
+ return ctrl->buffer.addr + ctrl->index == next->reg;
+}
+
+static int ov2680_write_reg_array(struct i2c_client *client,
+ const struct ov2680_reg *reglist)
+{
+ const struct ov2680_reg *next = reglist;
+ struct ov2680_write_ctrl ctrl;
+ int err;
+ dev_dbg(&client->dev, "++++write reg array\n");
+ ctrl.index = 0;
+ for (; next->type != OV2680_TOK_TERM; next++) {
+ switch (next->type & OV2680_TOK_MASK) {
+ case OV2680_TOK_DELAY:
+ err = __ov2680_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.
+ */
+ dev_dbg(&client->dev, "+++ov2680_write_reg_array reg=%x->%x\n", next->reg,next->val);
+ if (!__ov2680_write_reg_is_consecutive(client, &ctrl,
+ next)) {
+ err = __ov2680_flush_reg_array(client, &ctrl);
+ if (err)
+ return err;
+ }
+ err = __ov2680_buf_reg_array(client, &ctrl, next);
+ if (err) {
+ dev_err(&client->dev, "%s: write error, aborted\n",
+ __func__);
+ return err;
+ }
+ break;
+ }
+ }
+
+ return __ov2680_flush_reg_array(client, &ctrl);
+}
+static int ov2680_g_focal(struct v4l2_subdev *sd, s32 *val)
+{
+
+ *val = (OV2680_FOCAL_LENGTH_NUM << 16) | OV2680_FOCAL_LENGTH_DEM;
+ return 0;
+}
+
+static int ov2680_g_fnumber(struct v4l2_subdev *sd, s32 *val)
+{
+ /*const f number for ov2680*/
+
+ *val = (OV2680_F_NUMBER_DEFAULT_NUM << 16) | OV2680_F_NUMBER_DEM;
+ return 0;
+}
+
+static int ov2680_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
+{
+
+ *val = (OV2680_F_NUMBER_DEFAULT_NUM << 24) |
+ (OV2680_F_NUMBER_DEM << 16) |
+ (OV2680_F_NUMBER_DEFAULT_NUM << 8) | OV2680_F_NUMBER_DEM;
+ return 0;
+}
+
+static int ov2680_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ dev_dbg(&client->dev, "++++ov2680_g_bin_factor_x\n");
+ *val = ov2680_res[dev->fmt_idx].bin_factor_x;
+
+ return 0;
+}
+
+static int ov2680_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ *val = ov2680_res[dev->fmt_idx].bin_factor_y;
+ dev_dbg(&client->dev, "++++ov2680_g_bin_factor_y\n");
+ return 0;
+}
+
+
+static int ov2680_get_intg_factor(struct i2c_client *client,
+ struct camera_mipi_info *info,
+ const struct ov2680_resolution *res)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ struct atomisp_sensor_mode_data *buf = &info->data;
+ unsigned int pix_clk_freq_hz;
+ u16 reg_val;
+ int ret;
+ dev_dbg(&client->dev, "++++ov2680_get_intg_factor\n");
+ if (!info)
+ return -EINVAL;
+
+ /* pixel clock */
+ pix_clk_freq_hz = res->pix_clk_freq * 1000000;
+
+ dev->vt_pix_clk_freq_mhz = pix_clk_freq_hz;
+ buf->vt_pix_clk_freq_mhz = pix_clk_freq_hz;
+
+ /* get integration time */
+ buf->coarse_integration_time_min = OV2680_COARSE_INTG_TIME_MIN;
+ buf->coarse_integration_time_max_margin =
+ OV2680_COARSE_INTG_TIME_MAX_MARGIN;
+
+ buf->fine_integration_time_min = OV2680_FINE_INTG_TIME_MIN;
+ buf->fine_integration_time_max_margin =
+ OV2680_FINE_INTG_TIME_MAX_MARGIN;
+
+ buf->fine_integration_time_def = OV2680_FINE_INTG_TIME_MIN;
+ buf->frame_length_lines = res->lines_per_frame;
+ buf->line_length_pck = res->pixels_per_line;
+ buf->read_mode = res->bin_mode;
+
+ /* get the cropping and output resolution to ISP for this mode. */
+ ret = ov2680_read_reg(client, OV2680_16BIT,
+ OV2680_HORIZONTAL_START_H, &reg_val);
+ if (ret)
+ return ret;
+ buf->crop_horizontal_start = reg_val;
+
+ ret = ov2680_read_reg(client, OV2680_16BIT,
+ OV2680_VERTICAL_START_H, &reg_val);
+ if (ret)
+ return ret;
+ buf->crop_vertical_start = reg_val;
+
+ ret = ov2680_read_reg(client, OV2680_16BIT,
+ OV2680_HORIZONTAL_END_H, &reg_val);
+ if (ret)
+ return ret;
+ buf->crop_horizontal_end = reg_val;
+
+ ret = ov2680_read_reg(client, OV2680_16BIT,
+ OV2680_VERTICAL_END_H, &reg_val);
+ if (ret)
+ return ret;
+ buf->crop_vertical_end = reg_val;
+
+ ret = ov2680_read_reg(client, OV2680_16BIT,
+ OV2680_HORIZONTAL_OUTPUT_SIZE_H, &reg_val);
+ if (ret)
+ return ret;
+ buf->output_width = reg_val;
+
+ ret = ov2680_read_reg(client, OV2680_16BIT,
+ OV2680_VERTICAL_OUTPUT_SIZE_H, &reg_val);
+ if (ret)
+ return ret;
+ buf->output_height = reg_val;
+
+ buf->binning_factor_x = res->bin_factor_x ?
+ (res->bin_factor_x * 2) : 1;
+ buf->binning_factor_y = res->bin_factor_y ?
+ (res->bin_factor_y * 2) : 1;
+ return 0;
+}
+
+static long __ov2680_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
+ int gain, int digitgain)
+
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ u16 vts,hts;
+ int ret,exp_val;
+
+ dev_dbg(&client->dev, "+++++++__ov2680_set_exposure coarse_itg %d, gain %d, digitgain %d++\n",coarse_itg, gain, digitgain);
+
+ hts = ov2680_res[dev->fmt_idx].pixels_per_line;
+ vts = ov2680_res[dev->fmt_idx].lines_per_frame;
+
+ /* group hold */
+ ret = ov2680_write_reg(client, OV2680_8BIT,
+ OV2680_GROUP_ACCESS, 0x00);
+ if (ret) {
+ dev_err(&client->dev, "%s: write %x error, aborted\n",
+ __func__, OV2680_GROUP_ACCESS);
+ return ret;
+ }
+
+ /* Increase the VTS to match exposure + MARGIN */
+ if (coarse_itg > vts - OV2680_INTEGRATION_TIME_MARGIN)
+ vts = (u16) coarse_itg + OV2680_INTEGRATION_TIME_MARGIN;
+
+ ret = ov2680_write_reg(client, OV2680_16BIT, OV2680_TIMING_VTS_H, vts);
+ if (ret) {
+ dev_err(&client->dev, "%s: write %x error, aborted\n",
+ __func__, OV2680_TIMING_VTS_H);
+ return ret;
+ }
+
+ /* set exposure */
+
+ /* Lower four bit should be 0*/
+ exp_val = coarse_itg << 4;
+ ret = ov2680_write_reg(client, OV2680_8BIT,
+ OV2680_EXPOSURE_L, exp_val & 0xFF);
+ if (ret) {
+ dev_err(&client->dev, "%s: write %x error, aborted\n",
+ __func__, OV2680_EXPOSURE_L);
+ return ret;
+ }
+
+ ret = ov2680_write_reg(client, OV2680_8BIT,
+ OV2680_EXPOSURE_M, (exp_val >> 8) & 0xFF);
+ if (ret) {
+ dev_err(&client->dev, "%s: write %x error, aborted\n",
+ __func__, OV2680_EXPOSURE_M);
+ return ret;
+ }
+
+ ret = ov2680_write_reg(client, OV2680_8BIT,
+ OV2680_EXPOSURE_H, (exp_val >> 16) & 0x0F);
+ if (ret) {
+ dev_err(&client->dev, "%s: write %x error, aborted\n",
+ __func__, OV2680_EXPOSURE_H);
+ return ret;
+ }
+
+ /* Analog gain */
+ ret = ov2680_write_reg(client, OV2680_16BIT, OV2680_AGC_H, gain);
+ if (ret) {
+ dev_err(&client->dev, "%s: write %x error, aborted\n",
+ __func__, OV2680_AGC_H);
+ return ret;
+ }
+ /* Digital gain */
+ if (digitgain) {
+ ret = ov2680_write_reg(client, OV2680_16BIT,
+ OV2680_MWB_RED_GAIN_H, digitgain);
+ if (ret) {
+ dev_err(&client->dev, "%s: write %x error, aborted\n",
+ __func__, OV2680_MWB_RED_GAIN_H);
+ return ret;
+ }
+
+ ret = ov2680_write_reg(client, OV2680_16BIT,
+ OV2680_MWB_GREEN_GAIN_H, digitgain);
+ if (ret) {
+ dev_err(&client->dev, "%s: write %x error, aborted\n",
+ __func__, OV2680_MWB_RED_GAIN_H);
+ return ret;
+ }
+
+ ret = ov2680_write_reg(client, OV2680_16BIT,
+ OV2680_MWB_BLUE_GAIN_H, digitgain);
+ if (ret) {
+ dev_err(&client->dev, "%s: write %x error, aborted\n",
+ __func__, OV2680_MWB_RED_GAIN_H);
+ return ret;
+ }
+ }
+
+ /* End group */
+ ret = ov2680_write_reg(client, OV2680_8BIT,
+ OV2680_GROUP_ACCESS, 0x10);
+ if (ret)
+ return ret;
+
+ /* Delay launch group */
+ ret = ov2680_write_reg(client, OV2680_8BIT,
+ OV2680_GROUP_ACCESS, 0xa0);
+ if (ret)
+ return ret;
+ return ret;
+}
+
+static int ov2680_set_exposure(struct v4l2_subdev *sd, int exposure,
+ int gain, int digitgain)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ int ret;
+
+ mutex_lock(&dev->input_lock);
+ ret = __ov2680_set_exposure(sd, exposure, gain, digitgain);
+ mutex_unlock(&dev->input_lock);
+
+ return ret;
+}
+
+static long ov2680_s_exposure(struct v4l2_subdev *sd,
+ struct atomisp_exposure *exposure)
+{
+ u16 coarse_itg = exposure->integration_time[0];
+ u16 analog_gain = exposure->gain[0];
+ u16 digital_gain = exposure->gain[1];
+
+ /* we should not accept the invalid value below */
+ if (analog_gain == 0) {
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ v4l2_err(client, "%s: invalid value\n", __func__);
+ return -EINVAL;
+ }
+
+ // EXPOSURE CONTROL DISABLED FOR INITIAL CHECKIN, TUNING DOESN'T WORK
+ return ov2680_set_exposure(sd, coarse_itg, analog_gain, digital_gain);
+}
+
+
+
+
+
+static long ov2680_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
+{
+
+ switch (cmd) {
+ case ATOMISP_IOC_S_EXPOSURE:
+ return ov2680_s_exposure(sd, arg);
+
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/* This returns the exposure time being used. This should only be used
+ * for filling in EXIF data, not for actual image processing.
+ */
+static int ov2680_q_exposure(struct v4l2_subdev *sd, s32 *value)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ u16 reg_v, reg_v2;
+ int ret;
+
+ /* get exposure */
+ ret = ov2680_read_reg(client, OV2680_8BIT,
+ OV2680_EXPOSURE_L,
+ &reg_v);
+ if (ret)
+ goto err;
+
+ ret = ov2680_read_reg(client, OV2680_8BIT,
+ OV2680_EXPOSURE_M,
+ &reg_v2);
+ if (ret)
+ goto err;
+
+ reg_v += reg_v2 << 8;
+ ret = ov2680_read_reg(client, OV2680_8BIT,
+ OV2680_EXPOSURE_H,
+ &reg_v2);
+ if (ret)
+ goto err;
+
+ *value = reg_v + (((u32)reg_v2 << 16));
+err:
+ return ret;
+}
+
+static u32 ov2680_translate_bayer_order(enum atomisp_bayer_order code)
+{
+ switch (code) {
+ case atomisp_bayer_order_rggb:
+ return MEDIA_BUS_FMT_SRGGB10_1X10;
+ case atomisp_bayer_order_grbg:
+ return MEDIA_BUS_FMT_SGRBG10_1X10;
+ case atomisp_bayer_order_bggr:
+ return MEDIA_BUS_FMT_SBGGR10_1X10;
+ case atomisp_bayer_order_gbrg:
+ return MEDIA_BUS_FMT_SGBRG10_1X10;
+ }
+ return 0;
+}
+
+static int ov2680_v_flip(struct v4l2_subdev *sd, s32 value)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ struct camera_mipi_info *ov2680_info = NULL;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret;
+ u16 val;
+ u8 index;
+ dev_dbg(&client->dev, "@%s: value:%d\n", __func__, value);
+ ret = ov2680_read_reg(client, OV2680_8BIT, OV2680_FLIP_REG, &val);
+ if (ret)
+ return ret;
+ if (value) {
+ val |= OV2680_FLIP_MIRROR_BIT_ENABLE;
+ } else {
+ val &= ~OV2680_FLIP_MIRROR_BIT_ENABLE;
+ }
+ ret = ov2680_write_reg(client, OV2680_8BIT,
+ OV2680_FLIP_REG, val);
+ if (ret)
+ return ret;
+ index = (v_flag>0?OV2680_FLIP_BIT:0) | (h_flag>0?OV2680_MIRROR_BIT:0);
+ ov2680_info = v4l2_get_subdev_hostdata(sd);
+ if (ov2680_info) {
+ ov2680_info->raw_bayer_order = ov2680_bayer_order_mapping[index];
+ dev->format.code = ov2680_translate_bayer_order(
+ ov2680_info->raw_bayer_order);
+ }
+ return ret;
+}
+
+static int ov2680_h_flip(struct v4l2_subdev *sd, s32 value)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ struct camera_mipi_info *ov2680_info = NULL;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret;
+ u16 val;
+ u8 index;
+ dev_dbg(&client->dev, "@%s: value:%d\n", __func__, value);
+
+ ret = ov2680_read_reg(client, OV2680_8BIT, OV2680_MIRROR_REG, &val);
+ if (ret)
+ return ret;
+ if (value) {
+ val |= OV2680_FLIP_MIRROR_BIT_ENABLE;
+ } else {
+ val &= ~OV2680_FLIP_MIRROR_BIT_ENABLE;
+ }
+ ret = ov2680_write_reg(client, OV2680_8BIT,
+ OV2680_MIRROR_REG, val);
+ if (ret)
+ return ret;
+ index = (v_flag>0?OV2680_FLIP_BIT:0) | (h_flag>0?OV2680_MIRROR_BIT:0);
+ ov2680_info = v4l2_get_subdev_hostdata(sd);
+ if (ov2680_info) {
+ ov2680_info->raw_bayer_order = ov2680_bayer_order_mapping[index];
+ dev->format.code = ov2680_translate_bayer_order(
+ ov2680_info->raw_bayer_order);
+ }
+ return ret;
+}
+
+static int ov2680_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct ov2680_device *dev =
+ container_of(ctrl->handler, struct ov2680_device, ctrl_handler);
+ struct i2c_client *client = v4l2_get_subdevdata(&dev->sd);
+ int ret = 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_VFLIP:
+ dev_dbg(&client->dev, "%s: CID_VFLIP:%d.\n",
+ __func__, ctrl->val);
+ ret = ov2680_v_flip(&dev->sd, ctrl->val);
+ break;
+ case V4L2_CID_HFLIP:
+ dev_dbg(&client->dev, "%s: CID_HFLIP:%d.\n",
+ __func__, ctrl->val);
+ ret = ov2680_h_flip(&dev->sd, ctrl->val);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ return ret;
+}
+
+static int ov2680_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct ov2680_device *dev =
+ container_of(ctrl->handler, struct ov2680_device, ctrl_handler);
+ int ret = 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_EXPOSURE_ABSOLUTE:
+ ret = ov2680_q_exposure(&dev->sd, &ctrl->val);
+ break;
+ case V4L2_CID_FOCAL_ABSOLUTE:
+ ret = ov2680_g_focal(&dev->sd, &ctrl->val);
+ break;
+ case V4L2_CID_FNUMBER_ABSOLUTE:
+ ret = ov2680_g_fnumber(&dev->sd, &ctrl->val);
+ break;
+ case V4L2_CID_FNUMBER_RANGE:
+ ret = ov2680_g_fnumber_range(&dev->sd, &ctrl->val);
+ break;
+ case V4L2_CID_BIN_FACTOR_HORZ:
+ ret = ov2680_g_bin_factor_x(&dev->sd, &ctrl->val);
+ break;
+ case V4L2_CID_BIN_FACTOR_VERT:
+ ret = ov2680_g_bin_factor_y(&dev->sd, &ctrl->val);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops ctrl_ops = {
+ .s_ctrl = ov2680_s_ctrl,
+ .g_volatile_ctrl = ov2680_g_volatile_ctrl
+};
+
+struct v4l2_ctrl_config ov2680_controls[] = {
+ {
+ .ops = &ctrl_ops,
+ .id = V4L2_CID_EXPOSURE_ABSOLUTE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "exposure",
+ .min = 0x0,
+ .max = 0xffff,
+ .step = 0x01,
+ .def = 0x00,
+ .flags = 0,
+ },
+ {
+ .ops = &ctrl_ops,
+ .id = V4L2_CID_FOCAL_ABSOLUTE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "focal length",
+ .min = OV2680_FOCAL_LENGTH_DEFAULT,
+ .max = OV2680_FOCAL_LENGTH_DEFAULT,
+ .step = 0x01,
+ .def = OV2680_FOCAL_LENGTH_DEFAULT,
+ .flags = 0,
+ },
+ {
+ .ops = &ctrl_ops,
+ .id = V4L2_CID_FNUMBER_ABSOLUTE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "f-number",
+ .min = OV2680_F_NUMBER_DEFAULT,
+ .max = OV2680_F_NUMBER_DEFAULT,
+ .step = 0x01,
+ .def = OV2680_F_NUMBER_DEFAULT,
+ .flags = 0,
+ },
+ {
+ .ops = &ctrl_ops,
+ .id = V4L2_CID_FNUMBER_RANGE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "f-number range",
+ .min = OV2680_F_NUMBER_RANGE,
+ .max = OV2680_F_NUMBER_RANGE,
+ .step = 0x01,
+ .def = OV2680_F_NUMBER_RANGE,
+ .flags = 0,
+ },
+ {
+ .ops = &ctrl_ops,
+ .id = V4L2_CID_BIN_FACTOR_HORZ,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "horizontal binning factor",
+ .min = 0,
+ .max = OV2680_BIN_FACTOR_MAX,
+ .step = 1,
+ .def = 0,
+ .flags = 0,
+ },
+ {
+ .ops = &ctrl_ops,
+ .id = V4L2_CID_BIN_FACTOR_VERT,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "vertical binning factor",
+ .min = 0,
+ .max = OV2680_BIN_FACTOR_MAX,
+ .step = 1,
+ .def = 0,
+ .flags = 0,
+ },
+ {
+ .ops = &ctrl_ops,
+ .id = V4L2_CID_VFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Flip",
+ .min = 0,
+ .max = 1,
+ .step = 1,
+ .def = 0,
+ },
+ {
+ .ops = &ctrl_ops,
+ .id = V4L2_CID_HFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Mirror",
+ .min = 0,
+ .max = 1,
+ .step = 1,
+ .def = 0,
+ },
+};
+
+static int ov2680_init_registers(struct v4l2_subdev *sd)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret;
+
+ ret = ov2680_write_reg(client, OV2680_8BIT, OV2680_SW_RESET, 0x01);
+ ret |= ov2680_write_reg_array(client, ov2680_global_setting);
+
+ return ret;
+}
+
+static int ov2680_init(struct v4l2_subdev *sd)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+
+ int ret;
+
+ mutex_lock(&dev->input_lock);
+
+ /* restore settings */
+ ov2680_res = ov2680_res_preview;
+ N_RES = N_RES_PREVIEW;
+
+ ret = ov2680_init_registers(sd);
+
+ mutex_unlock(&dev->input_lock);
+
+ return ret;
+}
+
+static int power_ctrl(struct v4l2_subdev *sd, bool flag)
+{
+ int ret = 0;
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ if (!dev || !dev->platform_data)
+ return -ENODEV;
+
+ /* Non-gmin platforms use the legacy callback */
+ if (dev->platform_data->power_ctrl)
+ return dev->platform_data->power_ctrl(sd, flag);
+
+ if (flag) {
+ ret |= dev->platform_data->v1p8_ctrl(sd, 1);
+ ret |= dev->platform_data->v2p8_ctrl(sd, 1);
+ usleep_range(10000, 15000);
+ }
+
+ if (!flag || ret) {
+ ret |= dev->platform_data->v1p8_ctrl(sd, 0);
+ ret |= dev->platform_data->v2p8_ctrl(sd, 0);
+ }
+ return ret;
+}
+
+static int gpio_ctrl(struct v4l2_subdev *sd, bool flag)
+{
+ int ret;
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+
+ if (!dev || !dev->platform_data)
+ return -ENODEV;
+
+ /* Non-gmin platforms use the legacy callback */
+ if (dev->platform_data->gpio_ctrl)
+ return dev->platform_data->gpio_ctrl(sd, flag);
+
+ /* The OV2680 documents only one GPIO input (#XSHUTDN), but
+ * existing integrations often wire two (reset/power_down)
+ * because that is the way other sensors work. There is no
+ * way to tell how it is wired internally, so existing
+ * firmwares expose both and we drive them symmetrically. */
+ if (flag) {
+ ret = dev->platform_data->gpio0_ctrl(sd, 1);
+ usleep_range(10000, 15000);
+ ret |= dev->platform_data->gpio1_ctrl(sd, 1);
+ usleep_range(10000, 15000);
+ } else {
+ ret = dev->platform_data->gpio1_ctrl(sd, 0);
+ ret |= dev->platform_data->gpio0_ctrl(sd, 0);
+ }
+ return ret;
+}
+
+static int power_up(struct v4l2_subdev *sd)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret;
+
+ if (!dev->platform_data) {
+ dev_err(&client->dev,
+ "no camera_sensor_platform_data");
+ return -ENODEV;
+ }
+
+ /* power control */
+ ret = power_ctrl(sd, 1);
+ if (ret)
+ goto fail_power;
+
+ /* according to DS, at least 5ms is needed between DOVDD and PWDN */
+ usleep_range(5000, 6000);
+
+ /* gpio ctrl */
+ ret = gpio_ctrl(sd, 1);
+ if (ret) {
+ ret = gpio_ctrl(sd, 1);
+ if (ret)
+ goto fail_power;
+ }
+
+ /* flis clock control */
+ ret = dev->platform_data->flisclk_ctrl(sd, 1);
+ if (ret)
+ goto fail_clk;
+
+ /* according to DS, 20ms is needed between PWDN and i2c access */
+ msleep(20);
+
+ return 0;
+
+fail_clk:
+ gpio_ctrl(sd, 0);
+fail_power:
+ power_ctrl(sd, 0);
+ dev_err(&client->dev, "sensor power-up failed\n");
+
+ return ret;
+}
+
+static int power_down(struct v4l2_subdev *sd)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret = 0;
+
+ h_flag = 0;
+ v_flag = 0;
+ if (!dev->platform_data) {
+ dev_err(&client->dev,
+ "no camera_sensor_platform_data");
+ return -ENODEV;
+ }
+
+ ret = dev->platform_data->flisclk_ctrl(sd, 0);
+ if (ret)
+ dev_err(&client->dev, "flisclk failed\n");
+
+ /* gpio ctrl */
+ ret = gpio_ctrl(sd, 0);
+ if (ret) {
+ ret = gpio_ctrl(sd, 0);
+ if (ret)
+ dev_err(&client->dev, "gpio failed 2\n");
+ }
+
+ /* power control */
+ ret = power_ctrl(sd, 0);
+ if (ret)
+ dev_err(&client->dev, "vprog failed.\n");
+
+ return ret;
+}
+
+static int ov2680_s_power(struct v4l2_subdev *sd, int on)
+{
+ int ret;
+
+ if (on == 0){
+ ret = power_down(sd);
+ } else {
+ ret = power_up(sd);
+ if (!ret)
+ return ov2680_init(sd);
+ }
+ return ret;
+}
+
+/*
+ * distance - calculate the distance
+ * @res: resolution
+ * @w: width
+ * @h: height
+ *
+ * Get the gap between resolution and w/h.
+ * res->width/height smaller than w/h wouldn't be considered.
+ * Returns the value of gap or -1 if fail.
+ */
+#define LARGEST_ALLOWED_RATIO_MISMATCH 600
+static int distance(struct ov2680_resolution *res, u32 w, u32 h)
+{
+ unsigned int w_ratio = (res->width << 13) / w;
+ unsigned int h_ratio;
+ int match;
+
+ if (h == 0)
+ return -1;
+ h_ratio = (res->height << 13) / h;
+ if (h_ratio == 0)
+ return -1;
+ match = abs(((w_ratio << 13) / h_ratio) - ((int)8192));
+
+
+ if ((w_ratio < (int)8192) || (h_ratio < (int)8192) ||
+ (match > LARGEST_ALLOWED_RATIO_MISMATCH))
+ return -1;
+
+ return w_ratio + h_ratio;
+}
+
+/* Return the nearest higher resolution index */
+static int nearest_resolution_index(int w, int h)
+{
+ int i;
+ int idx = -1;
+ int dist;
+ int min_dist = INT_MAX;
+ struct ov2680_resolution *tmp_res = NULL;
+
+ for (i = 0; i < N_RES; i++) {
+ tmp_res = &ov2680_res[i];
+ dist = distance(tmp_res, w, h);
+ if (dist == -1)
+ continue;
+ if (dist < min_dist) {
+ min_dist = dist;
+ idx = i;
+ }
+ }
+
+ return idx;
+}
+
+static int get_resolution_index(int w, int h)
+{
+ int i;
+
+ for (i = 0; i < N_RES; i++) {
+ if (w != ov2680_res[i].width)
+ continue;
+ if (h != ov2680_res[i].height)
+ continue;
+
+ return i;
+ }
+
+ return -1;
+}
+
+static int ov2680_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct v4l2_mbus_framefmt *fmt = &format->format;
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct camera_mipi_info *ov2680_info = NULL;
+ int ret = 0;
+ int idx = 0;
+ dev_dbg(&client->dev, "+++++ov2680_s_mbus_fmt+++++l\n");
+ if (format->pad)
+ return -EINVAL;
+
+ if (!fmt)
+ return -EINVAL;
+
+ ov2680_info = v4l2_get_subdev_hostdata(sd);
+ if (!ov2680_info)
+ return -EINVAL;
+
+ mutex_lock(&dev->input_lock);
+ idx = nearest_resolution_index(fmt->width, fmt->height);
+ if (idx == -1) {
+ /* return the largest resolution */
+ fmt->width = ov2680_res[N_RES - 1].width;
+ fmt->height = ov2680_res[N_RES - 1].height;
+ } else {
+ fmt->width = ov2680_res[idx].width;
+ fmt->height = ov2680_res[idx].height;
+ }
+ fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+ cfg->try_fmt = *fmt;
+ mutex_unlock(&dev->input_lock);
+ return 0;
+ }
+ dev->fmt_idx = get_resolution_index(fmt->width, fmt->height);
+ dev_dbg(&client->dev, "+++++get_resolution_index=%d+++++l\n",
+ dev->fmt_idx);
+ if (dev->fmt_idx == -1) {
+ dev_err(&client->dev, "get resolution fail\n");
+ mutex_unlock(&dev->input_lock);
+ return -EINVAL;
+ }
+ v4l2_info(client, "__s_mbus_fmt i=%d, w=%d, h=%d\n", dev->fmt_idx,
+ fmt->width, fmt->height);
+ dev_dbg(&client->dev, "__s_mbus_fmt i=%d, w=%d, h=%d\n",
+ dev->fmt_idx, fmt->width, fmt->height);
+
+ ret = ov2680_write_reg_array(client, ov2680_res[dev->fmt_idx].regs);
+ if (ret)
+ dev_err(&client->dev, "ov2680 write resolution register err\n");
+
+ ret = ov2680_get_intg_factor(client, ov2680_info,
+ &ov2680_res[dev->fmt_idx]);
+ if (ret) {
+ dev_err(&client->dev, "failed to get integration_factor\n");
+ goto err;
+ }
+
+ /*recall flip functions to avoid flip registers
+ * were overridden by default setting
+ */
+ if (h_flag)
+ ov2680_h_flip(sd, h_flag);
+ if (v_flag)
+ ov2680_v_flip(sd, v_flag);
+
+ v4l2_info(client, "\n%s idx %d \n", __func__, dev->fmt_idx);
+
+ /*ret = startup(sd);
+ * if (ret)
+ * dev_err(&client->dev, "ov2680 startup err\n");
+ */
+err:
+ mutex_unlock(&dev->input_lock);
+ return ret;
+}
+
+static int ov2680_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct v4l2_mbus_framefmt *fmt = &format->format;
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+
+ if (format->pad)
+ return -EINVAL;
+
+ if (!fmt)
+ return -EINVAL;
+
+ fmt->width = ov2680_res[dev->fmt_idx].width;
+ fmt->height = ov2680_res[dev->fmt_idx].height;
+ fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
+
+ return 0;
+}
+
+static int ov2680_detect(struct i2c_client *client)
+{
+ struct i2c_adapter *adapter = client->adapter;
+ u16 high, low;
+ int ret;
+ u16 id;
+ u8 revision;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
+ return -ENODEV;
+
+ ret = ov2680_read_reg(client, OV2680_8BIT,
+ OV2680_SC_CMMN_CHIP_ID_H, &high);
+ if (ret) {
+ dev_err(&client->dev, "sensor_id_high = 0x%x\n", high);
+ return -ENODEV;
+ }
+ ret = ov2680_read_reg(client, OV2680_8BIT,
+ OV2680_SC_CMMN_CHIP_ID_L, &low);
+ id = ((((u16) high) << 8) | (u16) low);
+
+ if (id != OV2680_ID) {
+ dev_err(&client->dev, "sensor ID error 0x%x\n", id);
+ return -ENODEV;
+ }
+
+ ret = ov2680_read_reg(client, OV2680_8BIT,
+ OV2680_SC_CMMN_SUB_ID, &high);
+ revision = (u8) high & 0x0f;
+
+ dev_err(&client->dev, "sensor_revision id = 0x%x\n", id);
+ dev_err(&client->dev, "detect ov2680 success\n");
+ dev_err(&client->dev, "################5##########\n");
+ return 0;
+}
+
+static int ov2680_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret;
+
+ mutex_lock(&dev->input_lock);
+ if(enable )
+ dev_dbg(&client->dev, "ov2680_s_stream one \n");
+ else
+ dev_dbg(&client->dev, "ov2680_s_stream off \n");
+
+ ret = ov2680_write_reg(client, OV2680_8BIT, OV2680_SW_STREAM,
+ enable ? OV2680_START_STREAMING :
+ OV2680_STOP_STREAMING);
+#if 0
+ /* restore settings */
+ ov2680_res = ov2680_res_preview;
+ N_RES = N_RES_PREVIEW;
+#endif
+
+ //otp valid at stream on state
+ //if(!dev->otp_data)
+ // dev->otp_data = ov2680_otp_read(sd);
+
+ mutex_unlock(&dev->input_lock);
+
+ return ret;
+}
+
+
+static int ov2680_s_config(struct v4l2_subdev *sd,
+ int irq, void *platform_data)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret = 0;
+
+ if (!platform_data)
+ return -ENODEV;
+
+ dev->platform_data =
+ (struct camera_sensor_platform_data *)platform_data;
+
+ mutex_lock(&dev->input_lock);
+ /* power off the module, then power on it in future
+ * as first power on by board may not fulfill the
+ * power on sequqence needed by the module
+ */
+ ret = power_down(sd);
+ if (ret) {
+ dev_err(&client->dev, "ov2680 power-off err.\n");
+ goto fail_power_off;
+ }
+
+ ret = power_up(sd);
+ if (ret) {
+ dev_err(&client->dev, "ov2680 power-up err.\n");
+ goto fail_power_on;
+ }
+
+ ret = dev->platform_data->csi_cfg(sd, 1);
+ if (ret)
+ goto fail_csi_cfg;
+
+ /* config & detect sensor */
+ ret = ov2680_detect(client);
+ if (ret) {
+ dev_err(&client->dev, "ov2680_detect err s_config.\n");
+ goto fail_csi_cfg;
+ }
+
+ /* turn off sensor, after probed */
+ ret = power_down(sd);
+ if (ret) {
+ dev_err(&client->dev, "ov2680 power-off err.\n");
+ goto fail_csi_cfg;
+ }
+ mutex_unlock(&dev->input_lock);
+
+ return 0;
+
+fail_csi_cfg:
+ dev->platform_data->csi_cfg(sd, 0);
+fail_power_on:
+ power_down(sd);
+ dev_err(&client->dev, "sensor power-gating failed\n");
+fail_power_off:
+ mutex_unlock(&dev->input_lock);
+ return ret;
+}
+
+static int ov2680_g_parm(struct v4l2_subdev *sd,
+ struct v4l2_streamparm *param)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ if (!param)
+ return -EINVAL;
+
+ if (param->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ dev_err(&client->dev, "unsupported buffer type.\n");
+ return -EINVAL;
+ }
+
+ memset(param, 0, sizeof(*param));
+ param->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ if (dev->fmt_idx >= 0 && dev->fmt_idx < N_RES) {
+ param->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
+ param->parm.capture.timeperframe.numerator = 1;
+ param->parm.capture.capturemode = dev->run_mode;
+ param->parm.capture.timeperframe.denominator =
+ ov2680_res[dev->fmt_idx].fps;
+ }
+ return 0;
+}
+
+static int ov2680_s_parm(struct v4l2_subdev *sd,
+ struct v4l2_streamparm *param)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ dev->run_mode = param->parm.capture.capturemode;
+
+ v4l2_info(client, "\n%s:run_mode :%x\n", __func__, dev->run_mode);
+
+ mutex_lock(&dev->input_lock);
+ switch (dev->run_mode) {
+ case CI_MODE_VIDEO:
+ ov2680_res = ov2680_res_video;
+ N_RES = N_RES_VIDEO;
+ break;
+ case CI_MODE_STILL_CAPTURE:
+ ov2680_res = ov2680_res_still;
+ N_RES = N_RES_STILL;
+ break;
+ default:
+ ov2680_res = ov2680_res_preview;
+ N_RES = N_RES_PREVIEW;
+ }
+ mutex_unlock(&dev->input_lock);
+ return 0;
+}
+
+static int ov2680_g_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *interval)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+
+ interval->interval.numerator = 1;
+ interval->interval.denominator = ov2680_res[dev->fmt_idx].fps;
+
+ return 0;
+}
+
+static int ov2680_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->index >= MAX_FMTS)
+ return -EINVAL;
+
+ code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
+ return 0;
+}
+
+static int ov2680_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ int index = fse->index;
+
+ if (index >= N_RES)
+ return -EINVAL;
+
+ fse->min_width = ov2680_res[index].width;
+ fse->min_height = ov2680_res[index].height;
+ fse->max_width = ov2680_res[index].width;
+ fse->max_height = ov2680_res[index].height;
+
+ return 0;
+
+}
+
+static int ov2680_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
+{
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+
+ mutex_lock(&dev->input_lock);
+ *frames = ov2680_res[dev->fmt_idx].skip_frames;
+ mutex_unlock(&dev->input_lock);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_video_ops ov2680_video_ops = {
+ .s_stream = ov2680_s_stream,
+ .g_parm = ov2680_g_parm,
+ .s_parm = ov2680_s_parm,
+ .g_frame_interval = ov2680_g_frame_interval,
+};
+
+static const struct v4l2_subdev_sensor_ops ov2680_sensor_ops = {
+ .g_skip_frames = ov2680_g_skip_frames,
+};
+
+static const struct v4l2_subdev_core_ops ov2680_core_ops = {
+ .s_power = ov2680_s_power,
+ .ioctl = ov2680_ioctl,
+};
+
+static const struct v4l2_subdev_pad_ops ov2680_pad_ops = {
+ .enum_mbus_code = ov2680_enum_mbus_code,
+ .enum_frame_size = ov2680_enum_frame_size,
+ .get_fmt = ov2680_get_fmt,
+ .set_fmt = ov2680_set_fmt,
+};
+
+static const struct v4l2_subdev_ops ov2680_ops = {
+ .core = &ov2680_core_ops,
+ .video = &ov2680_video_ops,
+ .pad = &ov2680_pad_ops,
+ .sensor = &ov2680_sensor_ops,
+};
+
+static int ov2680_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ov2680_device *dev = to_ov2680_sensor(sd);
+ dev_dbg(&client->dev, "ov2680_remove...\n");
+
+ dev->platform_data->csi_cfg(sd, 0);
+
+ v4l2_device_unregister_subdev(sd);
+ media_entity_cleanup(&dev->sd.entity);
+ v4l2_ctrl_handler_free(&dev->ctrl_handler);
+ kfree(dev);
+
+ return 0;
+}
+
+static int ov2680_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct ov2680_device *dev;
+ int ret;
+ void *pdata;
+ unsigned int i;
+
+ printk("++++ov2680_probe++++\n");
+ dev_info(&client->dev, "++++ov2680_probe++++\n");
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev) {
+ dev_err(&client->dev, "out of memory\n");
+ return -ENOMEM;
+ }
+
+ mutex_init(&dev->input_lock);
+
+ dev->fmt_idx = 0;
+ v4l2_i2c_subdev_init(&(dev->sd), client, &ov2680_ops);
+
+ if (ACPI_COMPANION(&client->dev))
+ pdata = gmin_camera_platform_data(&dev->sd,
+ ATOMISP_INPUT_FORMAT_RAW_10,
+ atomisp_bayer_order_bggr);
+ else
+ pdata = client->dev.platform_data;
+
+ if (!pdata) {
+ ret = -EINVAL;
+ goto out_free;
+ }
+
+ ret = ov2680_s_config(&dev->sd, client->irq, pdata);
+ if (ret)
+ goto out_free;
+
+ ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA);
+ if (ret)
+ goto out_free;
+
+ dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ dev->pad.flags = MEDIA_PAD_FL_SOURCE;
+ dev->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
+ dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+ ret =
+ v4l2_ctrl_handler_init(&dev->ctrl_handler,
+ ARRAY_SIZE(ov2680_controls));
+ if (ret) {
+ ov2680_remove(client);
+ return ret;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(ov2680_controls); i++)
+ v4l2_ctrl_new_custom(&dev->ctrl_handler, &ov2680_controls[i],
+ NULL);
+
+ if (dev->ctrl_handler.error) {
+ ov2680_remove(client);
+ return dev->ctrl_handler.error;
+ }
+
+ /* Use same lock for controls as for everything else. */
+ dev->ctrl_handler.lock = &dev->input_lock;
+ dev->sd.ctrl_handler = &dev->ctrl_handler;
+
+ ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad);
+ if (ret)
+ {
+ ov2680_remove(client);
+ dev_dbg(&client->dev, "+++ remove ov2680 \n");
+ }
+ return ret;
+out_free:
+ dev_dbg(&client->dev, "+++ out free \n");
+ v4l2_device_unregister_subdev(&dev->sd);
+ kfree(dev);
+ return ret;
+}
+
+static struct acpi_device_id ov2680_acpi_match[] = {
+ {"XXOV2680"},
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, ov2680_acpi_match);
+
+
+MODULE_DEVICE_TABLE(i2c, ov2680_id);
+static struct i2c_driver ov2680_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = OV2680_NAME,
+ .acpi_match_table = ACPI_PTR(ov2680_acpi_match),
+
+ },
+ .probe = ov2680_probe,
+ .remove = ov2680_remove,
+ .id_table = ov2680_id,
+};
+
+static int init_ov2680(void)
+{
+ return i2c_add_driver(&ov2680_driver);
+}
+
+static void exit_ov2680(void)
+{
+
+ i2c_del_driver(&ov2680_driver);
+}
+
+module_init(init_ov2680);
+module_exit(exit_ov2680);
+
+MODULE_AUTHOR("Jacky Wang <Jacky_wang@ovt.com>");
+MODULE_DESCRIPTION("A low-level driver for OmniVision 2680 sensors");
+MODULE_LICENSE("GPL");
+
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