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From: Devid Antonio Filoni <[email protected]>
To:
Subject: [PATCH v3] staging: atomisp: add a driver for ov5648 camera sensor
Date: Mon, 2 Oct 2017 21:30:14 +0200
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Greg Kroah-Hartman <[email protected]>, [email protected],
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=?UTF-8?q?J=C3=A9r=C3=A9my=20Lefaure?= <[email protected]>,
Mauro Carvalho Chehab <[email protected]>, Alan Cox <[email protected]>
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The ov5648 5-megapixel camera sensor from OmniVision supports up to 2592x1944
resolution and MIPI CSI-2 interface. Output format is raw sRGB/Bayer with
10 bits per colour (SGRBG10_1X10).
This patch is a port of ov5648 driver after applying following
01org/ProductionKernelQuilts patches:
- 0004-ov2680-ov5648-Fork-lift-source-from-CTS.patch
- 0005-ov2680-ov5648-gminification.patch
- 0006-ov5648-Focus-support.patch
- 0007-Fix-resolution-issues-on-rear-camera.patch
- 0008-ov2680-ov5648-Enabled-the-set_exposure-functions.patch
- 0010-IRDA-cameras-mode-list-cleanup-unification.patch
- 0012-ov5648-Add-1296x972-binned-mode.patch
- 0014-ov5648-Adapt-to-Atomisp2-Gmin-VCM-framework.patch
- 0015-dw9714-Gmin-Atomisp-specific-VCM-driver.patch
- 0017-ov5648-Fix-deadlock-on-I2C-error.patch
- 0018-gc2155-Fix-deadlock-on-error.patch
- 0019-ov5648-Add-1280x960-binned-mode.patch
- 0020-ov5648-Make-1280x960-as-default-video-resolution.patch
- 0021-MALATA-Fix-testCameraToSurfaceTextureMetadata-CTS.patch
- 0023-OV5648-Added-5MP-video-resolution.patch
New changes introduced during the port:
- Rename entity types to entity functions
- Replace v4l2_subdev_fh by v4l2_subdev_pad_config
- Make use of media_bus_format enum
- Rename media_entity_init function to media_entity_pads_init
- Replace try_mbus_fmt by set_fmt
- Replace s_mbus_fmt by set_fmt
- Replace g_mbus_fmt by get_fmt
- Use s_ctrl/g_volatile_ctrl instead of ctrl core ops
- Update gmin platform API path
- Constify acpi_device_id
- Add "INT5648" value to acpi_device_id
- Fix some checkpatch errors and warnings
- Remove FSF's mailing address from the sample GPL notice
"INT5648" ACPI device id can be found in following production hardware:
BIOS Information
Vendor: LENOVO
Version: 1HCN40WW
Release Date: 11/04/2016
...
BIOS Revision: 0.40
Firmware Revision: 0.0
...
System Information
Manufacturer: LENOVO
Product Name: 80SG
Version: MIIX 310-10ICR
...
SKU Number: LENOVO_MT_80SG_BU_idea_FM_MIIX 310-10ICR
Family: IDEAPAD
...
Device DSDT excerpt:
Device (CA00)
{
Name (_ADR, Zero) // _ADR: Address
Name (_HID, "INT5648") // _HID: Hardware ID
Name (_CID, "INT5648") // _CID: Compatible ID
Name (_SUB, "INTL0000") // _SUB: Subsystem ID
Name (_DDN, "ov5648") // _DDN: DOS Device Name
...
I was not able to properly test this patch on my Lenovo Miix 310 due to other
issues with atomisp, the output is the same as ov2680 driver (OVTI2680)
which is very similar.
Signed-off-by: Devid Antonio Filoni <[email protected]>
---
Changes in v2:
- Fix indentation
- Add atomisp prefix to Kconfig option
Changes in v3:
- Use module_i2c_driver() macro
- Switch i2c drivers to use ->probe_new()
- Remove unused ->gpio_ctrl() callback
- Remove unused ->power_ctrl() callback
- Remove unneeded header inclusions
- Sort header inclusions alphabetically
- Replace kzalloc with devm_kzalloc
- Remove "XXOV5648" acpi_device_id, we don't know if it's used in any production device
- Use reverse XMAS tree declarations
- Fix comments style
- Remove __func__ from all dev_{dbg,info,err}() calls
- Add missing new line chars in all dev_{dbg,info,err}() calls
- Remove useless dev_{dbg,err}() calls
- Fix all checkpatch.pl issues
drivers/staging/media/atomisp/i2c/Kconfig | 12 +
drivers/staging/media/atomisp/i2c/Makefile | 1 +
drivers/staging/media/atomisp/i2c/atomisp-ov5648.c | 1787 ++++++++++++++++++++++++++++
drivers/staging/media/atomisp/i2c/ov5648.h | 828 +++++++++++++
4 files changed, 2628 insertions(+)
create mode 100644 drivers/staging/media/atomisp/i2c/atomisp-ov5648.c
create mode 100644 drivers/staging/media/atomisp/i2c/ov5648.h
diff --git a/drivers/staging/media/atomisp/i2c/Kconfig b/drivers/staging/media/atomisp/i2c/Kconfig
index a76f17d..6bd849d 100644
--- a/drivers/staging/media/atomisp/i2c/Kconfig
+++ b/drivers/staging/media/atomisp/i2c/Kconfig
@@ -83,6 +83,18 @@ config VIDEO_ATOMISP_OV2680
It currently only works with the atomisp driver.
+config VIDEO_ATOMISP_OV5648
+ tristate "Omnivision OV5648 sensor support"
+ depends on ACPI
+ depends on I2C && VIDEO_V4L2
+ ---help---
+ This is a Video4Linux2 sensor-level driver for the Omnivision
+ OV5648 raw camera.
+
+ ov5648 is a 5M raw sensor.
+
+ It currently only works with the atomisp driver.
+
#
# Kconfig for flash drivers
#
diff --git a/drivers/staging/media/atomisp/i2c/Makefile b/drivers/staging/media/atomisp/i2c/Makefile
index f8b3505..bb9cf7b 100644
--- a/drivers/staging/media/atomisp/i2c/Makefile
+++ b/drivers/staging/media/atomisp/i2c/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_VIDEO_ATOMISP_MT9M114) += atomisp-mt9m114.o
obj-$(CONFIG_VIDEO_ATOMISP_GC2235) += atomisp-gc2235.o
obj-$(CONFIG_VIDEO_ATOMISP_OV2722) += atomisp-ov2722.o
obj-$(CONFIG_VIDEO_ATOMISP_OV2680) += atomisp-ov2680.o
+obj-$(CONFIG_VIDEO_ATOMISP_OV5648) += atomisp-ov5648.o
obj-$(CONFIG_VIDEO_ATOMISP_GC0310) += atomisp-gc0310.o
obj-$(CONFIG_VIDEO_ATOMISP_MSRLIST_HELPER) += atomisp-libmsrlisthelper.o
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-ov5648.c b/drivers/staging/media/atomisp/i2c/atomisp-ov5648.c
new file mode 100644
index 0000000..15cb64b
--- /dev/null
+++ b/drivers/staging/media/atomisp/i2c/atomisp-ov5648.c
@@ -0,0 +1,1787 @@
+/*
+ * Support for OmniVision OV5648 5M camera sensor.
+ * Based on OmniVision OV2722 driver.
+ *
+ * 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/delay.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/i2c.h>
+#include <linux/io.h>
+#include <linux/kmod.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include "../include/linux/atomisp_gmin_platform.h"
+
+#include "ov5648.h"
+
+#define OV5648_DEBUG_EN 0
+
+#define H_FLIP_DEFAULT 1
+#define V_FLIP_DEFAULT 0
+static int h_flag = H_FLIP_DEFAULT;
+static int v_flag = V_FLIP_DEFAULT;
+
+static int ov5648_read_reg(struct i2c_client *client,
+ u16 data_length, u16 reg, u16 *val)
+{
+ struct i2c_msg msg[2];
+ unsigned char data[6];
+ int err;
+
+ if (data_length != OV5648_8BIT && data_length != OV5648_16BIT &&
+ data_length != OV5648_32BIT) {
+ dev_err(&client->dev, "read_reg error, invalid data length %x\n",
+ data_length);
+ 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) {
+ dev_err(&client->dev,
+ "read from offset 0x%x, error: %d\n", reg, err);
+ return err < 0 ? err : -EIO;
+ }
+
+ *val = 0;
+ /* high byte comes first */
+ if (data_length == OV5648_8BIT)
+ *val = (u8)data[0];
+ else if (data_length == OV5648_16BIT)
+ *val = be16_to_cpu(*(u16 *)&data[0]);
+ else
+ *val = be32_to_cpu(*(u32 *)&data[0]);
+
+ return 0;
+}
+
+static int ov5648_i2c_write(struct i2c_client *client, u16 len, u8 *data)
+{
+ const int num_msg = 1;
+ struct i2c_msg msg;
+ 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 ov5648_write_reg(struct i2c_client *client, u16 data_length,
+ u16 reg, u16 val)
+{
+ const u16 len = data_length + sizeof(u16); /* 16-bit address + data */
+ unsigned char data[4] = {0};
+ u16 *wreg = (u16 *)data;
+ int ret;
+
+ if (data_length != OV5648_8BIT && data_length != OV5648_16BIT &&
+ data_length != OV5648_32BIT) {
+ dev_err(&client->dev,
+ "write_reg error, invalid data_length %x\n",
+ data_length);
+ return -EINVAL;
+ }
+
+ /* High byte goes out first */
+ *wreg = cpu_to_be16(reg);
+
+ if (data_length == OV5648_8BIT) {
+ data[2] = (u8)(val);
+ } else if (data_length == OV5648_16BIT) {
+ u16 *wdata = (u16 *)&data[2];
+ *wdata = cpu_to_be16(val);
+ } else {
+ u32 *wdata = (u32 *)&data[2];
+ *wdata = cpu_to_be32(val);
+ }
+
+ ret = ov5648_i2c_write(client, len, data);
+ if (ret)
+ dev_err(&client->dev,
+ "write error: wrote 0x%x to offset 0x%x, error: %d\n",
+ val, reg, ret);
+
+ return ret;
+}
+
+/*
+ * ov5648_write_reg_array - Initializes a list of OV5648 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().
+ *
+ * __ov5648_flush_reg_array, __ov5648_buf_reg_array() and
+ * __ov5648_write_reg_is_consecutive() are internal functions to
+ * ov5648_write_reg_array_fast() and should be not used anywhere else.
+ *
+ */
+static int __ov5648_flush_reg_array(struct i2c_client *client,
+ struct ov5648_write_ctrl *ctrl)
+{
+ u16 size;
+
+ if (ctrl->index == 0)
+ return 0;
+
+ size = sizeof(u16) + ctrl->index;
+ ctrl->buffer.addr = cpu_to_be16(ctrl->buffer.addr);
+ ctrl->index = 0;
+
+ return ov5648_i2c_write(client, size, (u8 *)&ctrl->buffer);
+}
+
+static int __ov5648_buf_reg_array(struct i2c_client *client,
+ struct ov5648_write_ctrl *ctrl,
+ const struct ov5648_reg *next)
+{
+ u16 *data16;
+ int size;
+
+ switch (next->type) {
+ case OV5648_8BIT:
+ size = 1;
+ ctrl->buffer.data[ctrl->index] = (u8)next->val;
+ break;
+ case OV5648_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) >= OV5648_MAX_WRITE_BUF_SIZE)
+ return __ov5648_flush_reg_array(client, ctrl);
+
+ return 0;
+}
+
+static int __ov5648_write_reg_is_consecutive(struct i2c_client *client,
+ struct ov5648_write_ctrl *ctrl,
+ const struct ov5648_reg *next)
+{
+ if (ctrl->index == 0)
+ return 1;
+
+ return ctrl->buffer.addr + ctrl->index == next->reg;
+}
+
+static int ov5648_write_reg_array(struct i2c_client *client,
+ const struct ov5648_reg *reglist)
+{
+ const struct ov5648_reg *next;
+ struct ov5648_write_ctrl ctrl;
+ int err;
+
+ ctrl.index = 0;
+ for (next = reglist; next->type != OV5648_TOK_TERM; next++) {
+ switch (next->type & OV5648_TOK_MASK) {
+ case OV5648_TOK_DELAY:
+ err = __ov5648_flush_reg_array(client, &ctrl);
+ if (err)
+ return err;
+ msleep(next->val);
+ break;
+ default:
+ /*
+ * If next address is not consecutive, data needs to be
+ * flushed before proceed.
+ */
+ if (!__ov5648_write_reg_is_consecutive(client, &ctrl,
+ next)) {
+ err = __ov5648_flush_reg_array(client, &ctrl);
+ if (err)
+ return err;
+ }
+ err = __ov5648_buf_reg_array(client, &ctrl, next);
+ if (err) {
+ dev_err(&client->dev, "write error: %d, aborted\n", err);
+ return err;
+ }
+ break;
+ }
+ }
+
+ return __ov5648_flush_reg_array(client, &ctrl);
+}
+
+static int ov5648_g_focal(struct v4l2_subdev *sd, s32 *val)
+{
+ *val = (OV5648_FOCAL_LENGTH_NUM << 16) | OV5648_FOCAL_LENGTH_DEM;
+ return 0;
+}
+
+static int ov5648_g_fnumber(struct v4l2_subdev *sd, s32 *val)
+{
+ *val = (OV5648_F_NUMBER_DEFAULT_NUM << 16) | OV5648_F_NUMBER_DEM;
+ return 0;
+}
+
+static int ov5648_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
+{
+ *val = (OV5648_F_NUMBER_DEFAULT_NUM << 24) |
+ (OV5648_F_NUMBER_DEM << 16) |
+ (OV5648_F_NUMBER_DEFAULT_NUM << 8) | OV5648_F_NUMBER_DEM;
+ return 0;
+}
+
+static int ov5648_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val)
+{
+ struct ov5648_device *dev = to_ov5648_sensor(sd);
+
+ *val = ov5648_res[dev->fmt_idx].bin_factor_x;
+
+ return 0;
+}
+
+static int ov5648_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val)
+{
+ struct ov5648_device *dev = to_ov5648_sensor(sd);
+
+ *val = ov5648_res[dev->fmt_idx].bin_factor_y;
+
+ return 0;
+}
+
+static int ov5648_get_intg_factor(struct i2c_client *client,
+ struct camera_mipi_info *info,
+ const struct ov5648_resolution *res)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct atomisp_sensor_mode_data *buf = &info->data;
+ struct ov5648_device *dev = to_ov5648_sensor(sd);
+ unsigned int pix_clk_freq_hz;
+ u16 reg_val;
+ int ret;
+
+ if (!info)
+ return -EINVAL;
+
+ 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;
+
+ buf->coarse_integration_time_min = OV5648_COARSE_INTG_TIME_MIN;
+ buf->coarse_integration_time_max_margin =
+ OV5648_COARSE_INTG_TIME_MAX_MARGIN;
+
+ buf->fine_integration_time_min = OV5648_FINE_INTG_TIME_MIN;
+ buf->fine_integration_time_max_margin =
+ OV5648_FINE_INTG_TIME_MAX_MARGIN;
+
+ buf->fine_integration_time_def = OV5648_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;
+
+ ret = ov5648_read_reg(client, OV5648_16BIT,
+ OV5648_HORIZONTAL_START_H, ®_val);
+ if (ret)
+ return ret;
+ buf->crop_horizontal_start = reg_val;
+
+ ret = ov5648_read_reg(client, OV5648_16BIT,
+ OV5648_VERTICAL_START_H, ®_val);
+ if (ret)
+ return ret;
+ buf->crop_vertical_start = reg_val;
+
+ ret = ov5648_read_reg(client, OV5648_16BIT,
+ OV5648_HORIZONTAL_END_H, ®_val);
+ if (ret)
+ return ret;
+ buf->crop_horizontal_end = reg_val;
+
+ ret = ov5648_read_reg(client, OV5648_16BIT,
+ OV5648_VERTICAL_END_H, ®_val);
+ if (ret)
+ return ret;
+ buf->crop_vertical_end = reg_val;
+
+ ret = ov5648_read_reg(client, OV5648_16BIT,
+ OV5648_HORIZONTAL_OUTPUT_SIZE_H, ®_val);
+ if (ret)
+ return ret;
+ buf->output_width = reg_val;
+
+ ret = ov5648_read_reg(client, OV5648_16BIT,
+ OV5648_VERTICAL_OUTPUT_SIZE_H, ®_val);
+ if (ret)
+ return ret;
+ buf->output_height = reg_val;
+
+ buf->binning_factor_x = res->bin_factor_x ?
+ res->bin_factor_x : 1;
+ buf->binning_factor_y = res->bin_factor_y ?
+ res->bin_factor_y : 1;
+ return 0;
+}
+
+static long __ov5648_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
+ int gain, int digitgain)
+
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov5648_device *dev = to_ov5648_sensor(sd);
+ int ret, exp_val, vts_val, temp;
+ u16 vts, hts;
+
+ if (dev->run_mode == CI_MODE_VIDEO)
+ ov5648_res = ov5648_res_video;
+ else if (dev->run_mode == CI_MODE_STILL_CAPTURE)
+ ov5648_res = ov5648_res_still;
+ else
+ ov5648_res = ov5648_res_preview;
+
+ hts = ov5648_res[dev->fmt_idx].pixels_per_line;
+ vts = ov5648_res[dev->fmt_idx].lines_per_frame;
+
+ /* Group hold */
+ ret = ov5648_write_reg(client, OV5648_8BIT,
+ OV5648_GROUP_ACCESS, 0x00);
+ if (ret)
+ return ret;
+
+ /* Increase the VTS to match exposure + 4 */
+ if (coarse_itg + OV5648_INTEGRATION_TIME_MARGIN > vts)
+ vts_val = coarse_itg + OV5648_INTEGRATION_TIME_MARGIN;
+ else
+ vts_val = vts;
+ {
+ ret = ov5648_write_reg(client, OV5648_8BIT,
+ OV5648_TIMING_VTS_H,
+ (vts_val >> 8) & 0xFF);
+ if (ret)
+ return ret;
+ ret = ov5648_write_reg(client, OV5648_8BIT,
+ OV5648_TIMING_VTS_L,
+ vts_val & 0xFF);
+ if (ret)
+ return ret;
+ }
+
+ /* Set exposure. Lower four bit should be 0 */
+ exp_val = coarse_itg << 4;
+
+ ret = ov5648_write_reg(client, OV5648_8BIT,
+ OV5648_EXPOSURE_L, exp_val & 0xFF);
+ if (ret)
+ return ret;
+
+ ret = ov5648_write_reg(client, OV5648_8BIT,
+ OV5648_EXPOSURE_M, (exp_val >> 8) & 0xFF);
+ if (ret)
+ return ret;
+
+ ret = ov5648_write_reg(client, OV5648_8BIT,
+ OV5648_EXPOSURE_H, (exp_val >> 16) & 0x0F);
+ if (ret)
+ return ret;
+
+ /* Digital gain */
+ if (digitgain != dev->pre_digitgain) {
+ dev->pre_digitgain = digitgain;
+ temp = digitgain * dev->current_otp.R_gain >> 10;
+ if (temp >= 0x400) {
+ ret = ov5648_write_reg(client, OV5648_16BIT,
+ OV5648_MWB_RED_GAIN_H, temp);
+ if (ret)
+ return ret;
+ }
+
+ temp = digitgain * dev->current_otp.G_gain >> 10;
+ if (temp >= 0x400) {
+ ret = ov5648_write_reg(client, OV5648_16BIT,
+ OV5648_MWB_GREEN_GAIN_H, temp);
+ if (ret)
+ return ret;
+ }
+
+ temp = digitgain * dev->current_otp.B_gain >> 10;
+ if (temp >= 0x400) {
+ ret = ov5648_write_reg(client, OV5648_16BIT,
+ OV5648_MWB_BLUE_GAIN_H, temp);
+ if (ret)
+ return ret;
+ }
+ }
+
+ /* Analog gain */
+ ret = ov5648_write_reg(client, OV5648_8BIT,
+ OV5648_AGC_L, gain & 0xff);
+ if (ret)
+ return ret;
+
+ ret = ov5648_write_reg(client, OV5648_8BIT,
+ OV5648_AGC_H, (gain >> 8) & 0xff);
+ if (ret)
+ return ret;
+
+ /* End group */
+ ret = ov5648_write_reg(client, OV5648_8BIT,
+ OV5648_GROUP_ACCESS, 0x10);
+ if (ret)
+ return ret;
+
+ /* Delay launch group */
+ ret = ov5648_write_reg(client, OV5648_8BIT,
+ OV5648_GROUP_ACCESS, 0xa0);
+ if (ret)
+ return ret;
+
+ return ret;
+}
+
+static int ov5648_set_exposure(struct v4l2_subdev *sd, int exposure,
+ int gain, int digitgain)
+{
+ struct ov5648_device *dev = to_ov5648_sensor(sd);
+ int ret;
+
+ mutex_lock(&dev->input_lock);
+ ret = __ov5648_set_exposure(sd, exposure, gain, digitgain);
+ mutex_unlock(&dev->input_lock);
+
+ return ret;
+}
+
+static long ov5648_s_exposure(struct v4l2_subdev *sd,
+ struct atomisp_exposure *exposure)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int exp = exposure->integration_time[0];
+ int digitgain = exposure->gain[1];
+ int gain = exposure->gain[0];
+
+ /* We should not accept the invalid value below */
+ if (gain == 0) {
+ dev_err(&client->dev, "invalid gain value\n");
+ return -EINVAL;
+ }
+
+ return ov5648_set_exposure(sd, exp, gain, digitgain);
+}
+
+static long ov5648_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
+{
+ switch (cmd) {
+ case ATOMISP_IOC_S_EXPOSURE:
+ return ov5648_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 ov5648_q_exposure(struct v4l2_subdev *sd, s32 *value)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ u16 reg_v, reg_v2;
+ int ret;
+
+ ret = ov5648_read_reg(client, OV5648_8BIT,
+ OV5648_EXPOSURE_L, ®_v);
+ if (ret)
+ return ret;
+
+ ret = ov5648_read_reg(client, OV5648_8BIT,
+ OV5648_EXPOSURE_M, ®_v2);
+ if (ret)
+ return ret;
+
+ reg_v += reg_v2 << 8;
+ ret = ov5648_read_reg(client, OV5648_8BIT,
+ OV5648_EXPOSURE_H, ®_v2);
+ if (ret)
+ return ret;
+
+ *value = reg_v + (((u32)reg_v2 << 16));
+ return ret;
+}
+
+static int ov5648_vcm_power_up(struct v4l2_subdev *sd)
+{
+ struct ov5648_device *dev = to_ov5648_sensor(sd);
+ struct camera_sensor_platform_data *pdata = dev->platform_data;
+ struct camera_vcm_control *vcm;
+
+ if (!dev->vcm_driver)
+ if (pdata && pdata->get_vcm_ctrl)
+ dev->vcm_driver =
+ pdata->get_vcm_ctrl(&dev->sd,
+ dev->camera_module);
+
+ vcm = dev->vcm_driver;
+ if (vcm && vcm->ops && vcm->ops->power_up)
+ return vcm->ops->power_up(sd, vcm);
+
+ return 0;
+}
+
+static int ov5648_vcm_power_down(struct v4l2_subdev *sd)
+{
+ struct ov5648_device *dev = to_ov5648_sensor(sd);
+ struct camera_vcm_control *vcm = dev->vcm_driver;
+
+ if (vcm && vcm->ops && vcm->ops->power_down)
+ return vcm->ops->power_down(sd, vcm);
+
+ return 0;
+}
+
+static int ov5648_v_flip(struct v4l2_subdev *sd, s32 value)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret;
+ u16 val;
+
+ ret = ov5648_read_reg(client, OV5648_8BIT, OV5648_VFLIP_REG, &val);
+ if (ret)
+ return ret;
+
+ if (value)
+ val |= OV5648_VFLIP_VALUE;
+ else
+ val &= ~OV5648_VFLIP_VALUE;
+ ret = ov5648_write_reg(client, OV5648_8BIT,
+ OV5648_VFLIP_REG, val);
+ return ret;
+}
+
+static int ov5648_h_flip(struct v4l2_subdev *sd, s32 value)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret;
+ u16 val;
+
+ ret = ov5648_read_reg(client, OV5648_8BIT, OV5648_HFLIP_REG, &val);
+ if (ret)
+ return ret;
+
+ if (value)
+ val |= OV5648_HFLIP_VALUE;
+ else
+ val &= ~OV5648_HFLIP_VALUE;
+ ret = ov5648_write_reg(client, OV5648_8BIT,
+ OV5648_HFLIP_REG, val);
+ return ret;
+}
+
+static int ov5648_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct ov5648_device *dev = container_of(ctrl->handler,
+ struct ov5648_device, ctrl_handler);
+ int ret;
+
+ switch (ctrl->id) {
+ case V4L2_CID_VFLIP:
+ ret = ov5648_v_flip(&dev->sd, ctrl->val);
+ break;
+ case V4L2_CID_HFLIP:
+ ret = ov5648_h_flip(&dev->sd, ctrl->val);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ return ret;
+}
+
+static int ov5648_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct ov5648_device *dev = container_of(ctrl->handler,
+ struct ov5648_device, ctrl_handler);
+ int ret;
+
+ switch (ctrl->id) {
+ case V4L2_CID_EXPOSURE_ABSOLUTE:
+ ret = ov5648_q_exposure(&dev->sd, &ctrl->val);
+ break;
+ case V4L2_CID_FOCAL_ABSOLUTE:
+ ret = ov5648_g_focal(&dev->sd, &ctrl->val);
+ break;
+ case V4L2_CID_FNUMBER_ABSOLUTE:
+ ret = ov5648_g_fnumber(&dev->sd, &ctrl->val);
+ break;
+ case V4L2_CID_FNUMBER_RANGE:
+ ret = ov5648_g_fnumber_range(&dev->sd, &ctrl->val);
+ break;
+ case V4L2_CID_BIN_FACTOR_HORZ:
+ ret = ov5648_g_bin_factor_x(&dev->sd, &ctrl->val);
+ break;
+ case V4L2_CID_BIN_FACTOR_VERT:
+ ret = ov5648_g_bin_factor_y(&dev->sd, &ctrl->val);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops ctrl_ops = {
+ .s_ctrl = ov5648_s_ctrl,
+ .g_volatile_ctrl = ov5648_g_volatile_ctrl
+};
+
+struct v4l2_ctrl_config ov5648_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 = OV5648_FOCAL_LENGTH_DEFAULT,
+ .max = OV5648_FOCAL_LENGTH_DEFAULT,
+ .step = 0x01,
+ .def = OV5648_FOCAL_LENGTH_DEFAULT,
+ .flags = 0,
+ },
+ {
+ .ops = &ctrl_ops,
+ .id = V4L2_CID_FNUMBER_ABSOLUTE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "f-number",
+ .min = OV5648_F_NUMBER_DEFAULT,
+ .max = OV5648_F_NUMBER_DEFAULT,
+ .step = 0x01,
+ .def = OV5648_F_NUMBER_DEFAULT,
+ .flags = 0,
+ },
+ {
+ .ops = &ctrl_ops,
+ .id = V4L2_CID_FNUMBER_RANGE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "f-number range",
+ .min = OV5648_F_NUMBER_RANGE,
+ .max = OV5648_F_NUMBER_RANGE,
+ .step = 0x01,
+ .def = OV5648_F_NUMBER_RANGE,
+ .flags = 0,
+ },
+ {
+ .ops = &ctrl_ops,
+ .id = V4L2_CID_BIN_FACTOR_HORZ,
+ .type = V4L2_CTRL_TYPE_INTEGER,