1285 lines
30 KiB
C
1285 lines
30 KiB
C
/*
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* Support for GalaxyCore GC2235 2M camera sensor.
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*
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* Copyright (c) 2014 Intel Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/kmod.h>
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#include <linux/device.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/gpio.h>
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#include <linux/moduleparam.h>
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#include <media/v4l2-device.h>
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#ifndef CONFIG_GMIN_INTEL_MID /* FIXME! for non-gmin*/
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#include <media/v4l2-chip-ident.h>
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#endif
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#include <linux/io.h>
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#include "gc2235.h"
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/* i2c read/write stuff */
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static int gc2235_read_reg(struct i2c_client *client,
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u16 data_length, u16 reg, u16 *val)
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{
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int err;
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struct i2c_msg msg[2];
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unsigned char data[6];
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if (!client->adapter) {
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dev_err(&client->dev, "%s error, no client->adapter\n",
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__func__);
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return -ENODEV;
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}
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if (data_length != GC2235_8BIT) {
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dev_err(&client->dev, "%s error, invalid data length\n",
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__func__);
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return -EINVAL;
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}
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memset(msg, 0 , sizeof(msg));
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msg[0].addr = client->addr;
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msg[0].flags = 0;
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msg[0].len = 1;
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msg[0].buf = data;
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/* high byte goes out first */
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data[0] = (u8)(reg & 0xff);
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msg[1].addr = client->addr;
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msg[1].len = data_length;
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msg[1].flags = I2C_M_RD;
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msg[1].buf = data;
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err = i2c_transfer(client->adapter, msg, 2);
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if (err != 2) {
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if (err >= 0)
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err = -EIO;
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dev_err(&client->dev,
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"read from offset 0x%x error %d", reg, err);
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return err;
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}
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*val = 0;
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/* high byte comes first */
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if (data_length == GC2235_8BIT)
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*val = (u8)data[0];
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return 0;
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}
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static int gc2235_i2c_write(struct i2c_client *client, u16 len, u8 *data)
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{
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struct i2c_msg msg;
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const int num_msg = 1;
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int ret;
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msg.addr = client->addr;
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msg.flags = 0;
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msg.len = len;
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msg.buf = data;
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ret = i2c_transfer(client->adapter, &msg, 1);
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return ret == num_msg ? 0 : -EIO;
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}
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static int gc2235_write_reg(struct i2c_client *client, u16 data_length,
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u8 reg, u8 val)
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{
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int ret;
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unsigned char data[4] = {0};
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const u16 len = data_length + sizeof(u8); /* 16-bit address + data */
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if (data_length != GC2235_8BIT) {
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dev_err(&client->dev,
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"%s error, invalid data_length\n", __func__);
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return -EINVAL;
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}
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/* high byte goes out first */
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data[0] = reg;
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data[1] = val;
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ret = gc2235_i2c_write(client, len, data);
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if (ret)
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dev_err(&client->dev,
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"write error: wrote 0x%x to offset 0x%x error %d",
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val, reg, ret);
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return ret;
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}
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static int __gc2235_flush_reg_array(struct i2c_client *client,
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struct gc2235_write_ctrl *ctrl)
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{
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u16 size;
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if (ctrl->index == 0)
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return 0;
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size = sizeof(u8) + ctrl->index; /* 8-bit address + data */
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ctrl->index = 0;
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return gc2235_i2c_write(client, size, (u8 *)&ctrl->buffer);
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}
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static int __gc2235_buf_reg_array(struct i2c_client *client,
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struct gc2235_write_ctrl *ctrl,
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const struct gc2235_reg *next)
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{
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int size;
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if (next->type != GC2235_8BIT)
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return -EINVAL;
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size = 1;
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ctrl->buffer.data[ctrl->index] = (u8)next->val;
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/* When first item is added, we need to store its starting address */
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if (ctrl->index == 0)
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ctrl->buffer.addr = next->reg;
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ctrl->index += size;
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/*
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* Buffer cannot guarantee free space for u32? Better flush it to avoid
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* possible lack of memory for next item.
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*/
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if (ctrl->index + sizeof(u8) >= GC2235_MAX_WRITE_BUF_SIZE)
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return __gc2235_flush_reg_array(client, ctrl);
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return 0;
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}
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static int __gc2235_write_reg_is_consecutive(struct i2c_client *client,
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struct gc2235_write_ctrl *ctrl,
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const struct gc2235_reg *next)
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{
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if (ctrl->index == 0)
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return 1;
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return ctrl->buffer.addr + ctrl->index == next->reg;
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}
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static int gc2235_write_reg_array(struct i2c_client *client,
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const struct gc2235_reg *reglist)
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{
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const struct gc2235_reg *next = reglist;
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struct gc2235_write_ctrl ctrl;
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int err;
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ctrl.index = 0;
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for (; next->type != GC2235_TOK_TERM; next++) {
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switch (next->type & GC2235_TOK_MASK) {
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case GC2235_TOK_DELAY:
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err = __gc2235_flush_reg_array(client, &ctrl);
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if (err)
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return err;
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msleep(next->val);
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break;
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default:
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/*
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* If next address is not consecutive, data needs to be
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* flushed before proceed.
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*/
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if (!__gc2235_write_reg_is_consecutive(client, &ctrl,
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next)) {
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err = __gc2235_flush_reg_array(client, &ctrl);
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if (err)
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return err;
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}
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err = __gc2235_buf_reg_array(client, &ctrl, next);
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if (err) {
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dev_err(&client->dev, "%s: write error, aborted\n",
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__func__);
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return err;
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}
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break;
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}
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}
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return __gc2235_flush_reg_array(client, &ctrl);
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}
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static int gc2235_g_focal(struct v4l2_subdev *sd, s32 *val)
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{
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*val = (GC2235_FOCAL_LENGTH_NUM << 16) | GC2235_FOCAL_LENGTH_DEM;
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return 0;
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}
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static int gc2235_g_fnumber(struct v4l2_subdev *sd, s32 *val)
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{
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/*const f number for imx*/
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*val = (GC2235_F_NUMBER_DEFAULT_NUM << 16) | GC2235_F_NUMBER_DEM;
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return 0;
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}
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static int gc2235_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
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{
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*val = (GC2235_F_NUMBER_DEFAULT_NUM << 24) |
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(GC2235_F_NUMBER_DEM << 16) |
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(GC2235_F_NUMBER_DEFAULT_NUM << 8) | GC2235_F_NUMBER_DEM;
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return 0;
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}
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static int gc2235_get_intg_factor(struct i2c_client *client,
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struct camera_mipi_info *info,
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const struct gc2235_resolution *res)
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{
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struct v4l2_subdev *sd = i2c_get_clientdata(client);
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struct gc2235_device *dev = to_gc2235_sensor(sd);
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struct atomisp_sensor_mode_data *buf = &info->data;
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u16 reg_val, reg_val_h, dummy;
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int ret;
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if (info == NULL)
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return -EINVAL;
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/* pixel clock calculattion */
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buf->vt_pix_clk_freq_mhz = dev->vt_pix_clk_freq_mhz = 43750000;
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/* get integration time */
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buf->coarse_integration_time_min = GC2235_COARSE_INTG_TIME_MIN;
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buf->coarse_integration_time_max_margin =
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GC2235_COARSE_INTG_TIME_MAX_MARGIN;
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buf->fine_integration_time_min = GC2235_FINE_INTG_TIME_MIN;
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buf->fine_integration_time_max_margin =
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GC2235_FINE_INTG_TIME_MAX_MARGIN;
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buf->fine_integration_time_def = GC2235_FINE_INTG_TIME_MIN;
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buf->frame_length_lines = res->lines_per_frame;
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buf->line_length_pck = res->pixels_per_line;
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buf->read_mode = res->bin_mode;
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/* get the cropping and output resolution to ISP for this mode. */
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_H_CROP_START_H, ®_val_h);
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_H_CROP_START_L, ®_val);
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if (ret)
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return ret;
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buf->crop_horizontal_start = ((u16)reg_val_h << 8) | (u16)reg_val;
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_V_CROP_START_H, ®_val_h);
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_V_CROP_START_L, ®_val);
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if (ret)
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return ret;
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buf->crop_vertical_start = ((u16)reg_val_h << 8) | (u16)reg_val;
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_H_OUTSIZE_H, ®_val_h);
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_H_OUTSIZE_L, ®_val);
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if (ret)
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return ret;
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buf->output_width = ((u16)reg_val_h << 8) | (u16)reg_val;
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_V_OUTSIZE_H, ®_val_h);
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_V_OUTSIZE_L, ®_val);
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if (ret)
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return ret;
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buf->output_height = ((u16)reg_val_h << 8) | (u16)reg_val;
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buf->crop_horizontal_end = buf->crop_horizontal_start +
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buf->output_width - 1;
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buf->crop_vertical_end = buf->crop_vertical_start +
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buf->output_height - 1;
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_HB_H, ®_val_h);
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_HB_L, ®_val);
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if (ret)
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return ret;
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dummy = ((u16)reg_val_h << 8) | (u16)reg_val;
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_SH_DELAY_H, ®_val_h);
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_SH_DELAY_L, ®_val);
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buf->line_length_pck = buf->output_width + 16 + dummy +
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(((u16)reg_val_h << 8) | (u16)reg_val) + 4;
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_VB_H, ®_val_h);
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_VB_L, ®_val);
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if (ret)
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return ret;
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buf->frame_length_lines = buf->output_height + 32 +
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(((u16)reg_val_h << 8) | (u16)reg_val);
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buf->binning_factor_x = res->bin_factor_x ?
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res->bin_factor_x : 1;
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buf->binning_factor_y = res->bin_factor_y ?
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res->bin_factor_y : 1;
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return 0;
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}
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static long __gc2235_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
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int gain, int digitgain)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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u16 coarse_integration = (u16)coarse_itg;
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int ret = 0;
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u16 expo_coarse_h,expo_coarse_l, gain_val = 0xF0, gain_val2 = 0xF0;
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expo_coarse_h = coarse_integration>>8;
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expo_coarse_l = coarse_integration & 0xff;
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ret = gc2235_write_reg(client, GC2235_8BIT,
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GC2235_EXPOSURE_H, expo_coarse_h);
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ret = gc2235_write_reg(client, GC2235_8BIT,
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GC2235_EXPOSURE_L, expo_coarse_l);
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if (gain <= 0x58) {
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gain_val = 0x40;
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gain_val2 = 0x58;
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} else if (gain < 256) {
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gain_val = 0x40;
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gain_val2 = gain;
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} else {
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gain_val2 = 64 * gain / 256;
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gain_val = 0xff;
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}
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ret = gc2235_write_reg(client, GC2235_8BIT,
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GC2235_GLOBAL_GAIN, (u8)gain_val);
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ret = gc2235_write_reg(client, GC2235_8BIT,
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GC2235_PRE_GAIN, (u8)gain_val2);
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return ret;
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}
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static int gc2235_set_exposure(struct v4l2_subdev *sd, int exposure,
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int gain, int digitgain)
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{
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struct gc2235_device *dev = to_gc2235_sensor(sd);
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int ret;
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mutex_lock(&dev->input_lock);
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ret = __gc2235_set_exposure(sd, exposure, gain, digitgain);
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mutex_unlock(&dev->input_lock);
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return ret;
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}
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static long gc2235_s_exposure(struct v4l2_subdev *sd,
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struct atomisp_exposure *exposure)
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{
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int exp = exposure->integration_time[0];
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int gain = exposure->gain[0];
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int digitgain = exposure->gain[1];
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/* we should not accept the invalid value below. */
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if (gain == 0) {
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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v4l2_err(client, "%s: invalid value\n", __func__);
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return -EINVAL;
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}
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return gc2235_set_exposure(sd, exp, gain, digitgain);
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}
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static long gc2235_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
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{
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switch (cmd) {
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case ATOMISP_IOC_S_EXPOSURE:
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return gc2235_s_exposure(sd, arg);
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default:
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return -EINVAL;
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}
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return 0;
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}
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|
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/* This returns the exposure time being used. This should only be used
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for filling in EXIF data, not for actual image processing. */
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static int gc2235_q_exposure(struct v4l2_subdev *sd, s32 *value)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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u16 reg_v, reg_v2;
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int ret;
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/* get exposure */
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_EXPOSURE_L,
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®_v);
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if (ret)
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goto err;
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ret = gc2235_read_reg(client, GC2235_8BIT,
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GC2235_EXPOSURE_H,
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®_v2);
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if (ret)
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goto err;
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reg_v += reg_v2 << 8;
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*value = reg_v;
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err:
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return ret;
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}
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|
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struct gc2235_control gc2235_controls[] = {
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{
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.qc = {
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.id = V4L2_CID_EXPOSURE_ABSOLUTE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "exposure",
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.minimum = 0x0,
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.maximum = 0xffff,
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.step = 0x01,
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.default_value = 0x00,
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.flags = 0,
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},
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.query = gc2235_q_exposure,
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},
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{
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.qc = {
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.id = V4L2_CID_FOCAL_ABSOLUTE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "focal length",
|
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.minimum = GC2235_FOCAL_LENGTH_DEFAULT,
|
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.maximum = GC2235_FOCAL_LENGTH_DEFAULT,
|
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.step = 0x01,
|
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.default_value = GC2235_FOCAL_LENGTH_DEFAULT,
|
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.flags = 0,
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},
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.query = gc2235_g_focal,
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},
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{
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.qc = {
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.id = V4L2_CID_FNUMBER_ABSOLUTE,
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.type = V4L2_CTRL_TYPE_INTEGER,
|
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.name = "f-number",
|
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.minimum = GC2235_F_NUMBER_DEFAULT,
|
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.maximum = GC2235_F_NUMBER_DEFAULT,
|
|
.step = 0x01,
|
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.default_value = GC2235_F_NUMBER_DEFAULT,
|
|
.flags = 0,
|
|
},
|
|
.query = gc2235_g_fnumber,
|
|
},
|
|
{
|
|
.qc = {
|
|
.id = V4L2_CID_FNUMBER_RANGE,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "f-number range",
|
|
.minimum = GC2235_F_NUMBER_RANGE,
|
|
.maximum = GC2235_F_NUMBER_RANGE,
|
|
.step = 0x01,
|
|
.default_value = GC2235_F_NUMBER_RANGE,
|
|
.flags = 0,
|
|
},
|
|
.query = gc2235_g_fnumber_range,
|
|
},
|
|
};
|
|
#define N_CONTROLS (ARRAY_SIZE(gc2235_controls))
|
|
|
|
static struct gc2235_control *gc2235_find_control(u32 id)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < N_CONTROLS; i++)
|
|
if (gc2235_controls[i].qc.id == id)
|
|
return &gc2235_controls[i];
|
|
return NULL;
|
|
}
|
|
|
|
static int gc2235_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
|
|
{
|
|
struct gc2235_control *ctrl = gc2235_find_control(qc->id);
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
|
|
if (ctrl == NULL)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&dev->input_lock);
|
|
*qc = ctrl->qc;
|
|
mutex_unlock(&dev->input_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* imx control set/get */
|
|
static int gc2235_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
|
|
{
|
|
struct gc2235_control *s_ctrl;
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
int ret;
|
|
|
|
if (!ctrl)
|
|
return -EINVAL;
|
|
|
|
s_ctrl = gc2235_find_control(ctrl->id);
|
|
if ((s_ctrl == NULL) || (s_ctrl->query == NULL))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&dev->input_lock);
|
|
ret = s_ctrl->query(sd, &ctrl->value);
|
|
mutex_unlock(&dev->input_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int gc2235_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
|
|
{
|
|
struct gc2235_control *octrl = gc2235_find_control(ctrl->id);
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
int ret;
|
|
|
|
if ((octrl == NULL) || (octrl->tweak == NULL))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&dev->input_lock);
|
|
ret = octrl->tweak(sd, ctrl->value);
|
|
mutex_unlock(&dev->input_lock);
|
|
|
|
return ret;
|
|
}
|
|
static int __gc2235_init(struct v4l2_subdev *sd)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
/* restore settings */
|
|
gc2235_res = gc2235_res_preview;
|
|
N_RES = N_RES_PREVIEW;
|
|
|
|
return gc2235_write_reg_array(client, gc2235_init_settings);
|
|
}
|
|
|
|
static int gc2235_init(struct v4l2_subdev *sd)
|
|
{
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
int ret = 0;
|
|
|
|
mutex_lock(&dev->input_lock);
|
|
ret = __gc2235_init(sd);
|
|
mutex_unlock(&dev->input_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int power_up(struct v4l2_subdev *sd)
|
|
{
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
int ret;
|
|
|
|
if (NULL == dev->platform_data) {
|
|
dev_err(&client->dev,
|
|
"no camera_sensor_platform_data");
|
|
return -ENODEV;
|
|
}
|
|
/* power control */
|
|
ret = dev->platform_data->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);
|
|
|
|
ret = dev->platform_data->flisclk_ctrl(sd, 1);
|
|
if (ret)
|
|
goto fail_clk;
|
|
usleep_range(5000, 6000);
|
|
|
|
/* gpio ctrl */
|
|
ret = dev->platform_data->gpio_ctrl(sd, 1);
|
|
if (ret) {
|
|
ret = dev->platform_data->gpio_ctrl(sd, 1);
|
|
if (ret)
|
|
goto fail_power;
|
|
}
|
|
|
|
msleep(50);
|
|
|
|
return 0;
|
|
|
|
fail_clk:
|
|
dev->platform_data->gpio_ctrl(sd, 0);
|
|
fail_power:
|
|
dev->platform_data->power_ctrl(sd, 0);
|
|
dev_err(&client->dev, "sensor power-up failed\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int power_down(struct v4l2_subdev *sd)
|
|
{
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
int ret = 0;
|
|
|
|
if (NULL == dev->platform_data) {
|
|
dev_err(&client->dev,
|
|
"no camera_sensor_platform_data");
|
|
return -ENODEV;
|
|
}
|
|
/* gpio ctrl */
|
|
ret = dev->platform_data->gpio_ctrl(sd, 0);
|
|
if (ret) {
|
|
ret = dev->platform_data->gpio_ctrl(sd, 0);
|
|
if (ret)
|
|
dev_err(&client->dev, "gpio failed 2\n");
|
|
}
|
|
|
|
ret = dev->platform_data->flisclk_ctrl(sd, 0);
|
|
if (ret)
|
|
dev_err(&client->dev, "flisclk failed\n");
|
|
|
|
/* power control */
|
|
ret = dev->platform_data->power_ctrl(sd, 0);
|
|
if (ret)
|
|
dev_err(&client->dev, "vprog failed.\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int gc2235_s_power(struct v4l2_subdev *sd, int on)
|
|
{
|
|
int ret;
|
|
if (on == 0)
|
|
return power_down(sd);
|
|
else {
|
|
ret = power_up(sd);
|
|
if (!ret)
|
|
return gc2235_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 800
|
|
static int distance(struct gc2235_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 gc2235_resolution *tmp_res = NULL;
|
|
|
|
for (i = 0; i < N_RES; i++) {
|
|
tmp_res = &gc2235_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 != gc2235_res[i].width)
|
|
continue;
|
|
if (h != gc2235_res[i].height)
|
|
continue;
|
|
|
|
return i;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int gc2235_try_mbus_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_mbus_framefmt *fmt)
|
|
{
|
|
int idx;
|
|
|
|
if (!fmt)
|
|
return -EINVAL;
|
|
idx = nearest_resolution_index(fmt->width,
|
|
fmt->height);
|
|
if (idx == -1) {
|
|
/* return the largest resolution */
|
|
fmt->width = gc2235_res[N_RES - 1].width;
|
|
fmt->height = gc2235_res[N_RES - 1].height;
|
|
} else {
|
|
fmt->width = gc2235_res[idx].width;
|
|
fmt->height = gc2235_res[idx].height;
|
|
}
|
|
fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int startup(struct v4l2_subdev *sd)
|
|
{
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
int ret = 0;
|
|
|
|
ret = gc2235_write_reg_array(client, gc2235_res[dev->fmt_idx].regs);
|
|
if (ret) {
|
|
dev_err(&client->dev, "gc2235 write register err.\n");
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int gc2235_s_mbus_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_mbus_framefmt *fmt)
|
|
{
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
struct camera_mipi_info *gc2235_info = NULL;
|
|
int ret = 0;
|
|
|
|
gc2235_info = v4l2_get_subdev_hostdata(sd);
|
|
if (gc2235_info == NULL)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&dev->input_lock);
|
|
ret = gc2235_try_mbus_fmt(sd, fmt);
|
|
if (ret == -1) {
|
|
dev_err(&client->dev, "try fmt fail\n");
|
|
goto err;
|
|
}
|
|
|
|
dev->fmt_idx = get_resolution_index(fmt->width,
|
|
fmt->height);
|
|
if (dev->fmt_idx == -1) {
|
|
dev_err(&client->dev, "get resolution fail\n");
|
|
mutex_unlock(&dev->input_lock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = startup(sd);
|
|
if (ret) {
|
|
dev_err(&client->dev, "gc2235 startup err\n");
|
|
goto err;
|
|
}
|
|
|
|
ret = gc2235_get_intg_factor(client, gc2235_info,
|
|
&gc2235_res[dev->fmt_idx]);
|
|
if (ret)
|
|
dev_err(&client->dev, "failed to get integration_factor\n");
|
|
|
|
err:
|
|
mutex_unlock(&dev->input_lock);
|
|
return ret;
|
|
}
|
|
static int gc2235_g_mbus_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_mbus_framefmt *fmt)
|
|
{
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
|
|
if (!fmt)
|
|
return -EINVAL;
|
|
|
|
fmt->width = gc2235_res[dev->fmt_idx].width;
|
|
fmt->height = gc2235_res[dev->fmt_idx].height;
|
|
fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gc2235_detect(struct i2c_client *client)
|
|
{
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
u16 high, low;
|
|
int ret;
|
|
u16 id;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
|
|
return -ENODEV;
|
|
|
|
ret = gc2235_read_reg(client, GC2235_8BIT,
|
|
GC2235_SENSOR_ID_H, &high);
|
|
if (ret) {
|
|
dev_err(&client->dev, "sensor_id_high = 0x%x\n", high);
|
|
return -ENODEV;
|
|
}
|
|
ret = gc2235_read_reg(client, GC2235_8BIT,
|
|
GC2235_SENSOR_ID_L, &low);
|
|
id = ((((u16) high) << 8) | (u16) low);
|
|
|
|
if (id != GC2235_ID) {
|
|
dev_err(&client->dev, "sensor ID error, 0x%x\n", id);
|
|
return -ENODEV;
|
|
}
|
|
|
|
dev_dbg(&client->dev, "detect gc2235 success\n");
|
|
return 0;
|
|
}
|
|
|
|
static int gc2235_s_stream(struct v4l2_subdev *sd, int enable)
|
|
{
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
int ret;
|
|
|
|
mutex_lock(&dev->input_lock);
|
|
|
|
if (enable)
|
|
ret = gc2235_write_reg_array(client, gc2235_stream_on);
|
|
else
|
|
ret = gc2235_write_reg_array(client, gc2235_stream_off);
|
|
|
|
mutex_unlock(&dev->input_lock);
|
|
return ret;
|
|
}
|
|
|
|
/* gc2235 enum frame size, frame intervals */
|
|
static int gc2235_enum_framesizes(struct v4l2_subdev *sd,
|
|
struct v4l2_frmsizeenum *fsize)
|
|
{
|
|
unsigned int index = fsize->index;
|
|
|
|
if (index >= N_RES)
|
|
return -EINVAL;
|
|
|
|
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
|
|
fsize->discrete.width = gc2235_res[index].width;
|
|
fsize->discrete.height = gc2235_res[index].height;
|
|
fsize->reserved[0] = gc2235_res[index].used;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gc2235_enum_frameintervals(struct v4l2_subdev *sd,
|
|
struct v4l2_frmivalenum *fival)
|
|
{
|
|
unsigned int index = fival->index;
|
|
|
|
if (index >= N_RES)
|
|
return -EINVAL;
|
|
|
|
fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
|
|
fival->width = gc2235_res[index].width;
|
|
fival->height = gc2235_res[index].height;
|
|
fival->discrete.numerator = 1;
|
|
fival->discrete.denominator = gc2235_res[index].fps;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gc2235_enum_mbus_fmt(struct v4l2_subdev *sd,
|
|
unsigned int index,
|
|
enum v4l2_mbus_pixelcode *code)
|
|
{
|
|
*code = V4L2_MBUS_FMT_SBGGR10_1X10;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gc2235_s_config(struct v4l2_subdev *sd,
|
|
int irq, void *platform_data)
|
|
{
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
int ret = 0;
|
|
|
|
if (platform_data == NULL)
|
|
return -ENODEV;
|
|
|
|
dev->platform_data =
|
|
(struct camera_sensor_platform_data *)platform_data;
|
|
|
|
mutex_lock(&dev->input_lock);
|
|
if (dev->platform_data->platform_init) {
|
|
ret = dev->platform_data->platform_init(client);
|
|
if (ret) {
|
|
dev_err(&client->dev, "platform init err\n");
|
|
goto platform_init_failed;
|
|
}
|
|
}
|
|
/* 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, "gc2235 power-off err.\n");
|
|
goto fail_power_off;
|
|
}
|
|
|
|
ret = power_up(sd);
|
|
if (ret) {
|
|
dev_err(&client->dev, "gc2235 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 = gc2235_detect(client);
|
|
if (ret) {
|
|
dev_err(&client->dev, "gc2235_detect err s_config.\n");
|
|
goto fail_csi_cfg;
|
|
}
|
|
|
|
/* turn off sensor, after probed */
|
|
ret = power_down(sd);
|
|
if (ret) {
|
|
dev_err(&client->dev, "gc2235 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:
|
|
if (dev->platform_data->platform_deinit)
|
|
dev->platform_data->platform_deinit();
|
|
platform_init_failed:
|
|
mutex_unlock(&dev->input_lock);
|
|
return ret;
|
|
}
|
|
|
|
static int gc2235_g_parm(struct v4l2_subdev *sd,
|
|
struct v4l2_streamparm *param)
|
|
{
|
|
struct gc2235_device *dev = to_gc2235_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 =
|
|
gc2235_res[dev->fmt_idx].fps;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int gc2235_s_parm(struct v4l2_subdev *sd,
|
|
struct v4l2_streamparm *param)
|
|
{
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
dev->run_mode = param->parm.capture.capturemode;
|
|
|
|
mutex_lock(&dev->input_lock);
|
|
switch (dev->run_mode) {
|
|
case CI_MODE_VIDEO:
|
|
gc2235_res = gc2235_res_video;
|
|
N_RES = N_RES_VIDEO;
|
|
break;
|
|
case CI_MODE_STILL_CAPTURE:
|
|
gc2235_res = gc2235_res_still;
|
|
N_RES = N_RES_STILL;
|
|
break;
|
|
default:
|
|
gc2235_res = gc2235_res_preview;
|
|
N_RES = N_RES_PREVIEW;
|
|
}
|
|
mutex_unlock(&dev->input_lock);
|
|
return 0;
|
|
}
|
|
|
|
static int gc2235_g_frame_interval(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_frame_interval *interval)
|
|
{
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
|
|
interval->interval.numerator = 1;
|
|
interval->interval.denominator = gc2235_res[dev->fmt_idx].fps;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gc2235_enum_mbus_code(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_fh *fh,
|
|
struct v4l2_subdev_mbus_code_enum *code)
|
|
{
|
|
if (code->index >= MAX_FMTS)
|
|
return -EINVAL;
|
|
|
|
code->code = V4L2_MBUS_FMT_SBGGR10_1X10;
|
|
return 0;
|
|
}
|
|
|
|
static int gc2235_enum_frame_size(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_fh *fh,
|
|
struct v4l2_subdev_frame_size_enum *fse)
|
|
{
|
|
int index = fse->index;
|
|
|
|
if (index >= N_RES)
|
|
return -EINVAL;
|
|
|
|
fse->min_width = gc2235_res[index].width;
|
|
fse->min_height = gc2235_res[index].height;
|
|
fse->max_width = gc2235_res[index].width;
|
|
fse->max_height = gc2235_res[index].height;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
static struct v4l2_mbus_framefmt *
|
|
__gc2235_get_pad_format(struct gc2235_device *sensor,
|
|
struct v4l2_subdev_fh *fh, unsigned int pad,
|
|
enum v4l2_subdev_format_whence which)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
|
|
|
|
if (pad != 0) {
|
|
dev_err(&client->dev,
|
|
"__gc2235_get_pad_format err. pad %x\n", pad);
|
|
return NULL;
|
|
}
|
|
|
|
switch (which) {
|
|
case V4L2_SUBDEV_FORMAT_TRY:
|
|
return v4l2_subdev_get_try_format(fh, pad);
|
|
case V4L2_SUBDEV_FORMAT_ACTIVE:
|
|
return &sensor->format;
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static int gc2235_get_pad_format(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_fh *fh,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct gc2235_device *snr = to_gc2235_sensor(sd);
|
|
struct v4l2_mbus_framefmt *format =
|
|
__gc2235_get_pad_format(snr, fh, fmt->pad, fmt->which);
|
|
if (!format)
|
|
return -EINVAL;
|
|
|
|
fmt->format = *format;
|
|
return 0;
|
|
}
|
|
|
|
static int gc2235_set_pad_format(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_fh *fh,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct gc2235_device *snr = to_gc2235_sensor(sd);
|
|
|
|
if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
|
|
snr->format = fmt->format;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gc2235_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
|
|
{
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
|
|
mutex_lock(&dev->input_lock);
|
|
*frames = gc2235_res[dev->fmt_idx].skip_frames;
|
|
mutex_unlock(&dev->input_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_subdev_sensor_ops gc2235_sensor_ops = {
|
|
.g_skip_frames = gc2235_g_skip_frames,
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops gc2235_video_ops = {
|
|
.s_stream = gc2235_s_stream,
|
|
.g_parm = gc2235_g_parm,
|
|
.s_parm = gc2235_s_parm,
|
|
.enum_framesizes = gc2235_enum_framesizes,
|
|
.enum_frameintervals = gc2235_enum_frameintervals,
|
|
.enum_mbus_fmt = gc2235_enum_mbus_fmt,
|
|
.try_mbus_fmt = gc2235_try_mbus_fmt,
|
|
.g_mbus_fmt = gc2235_g_mbus_fmt,
|
|
.s_mbus_fmt = gc2235_s_mbus_fmt,
|
|
.g_frame_interval = gc2235_g_frame_interval,
|
|
};
|
|
|
|
static const struct v4l2_subdev_core_ops gc2235_core_ops = {
|
|
.s_power = gc2235_s_power,
|
|
.queryctrl = gc2235_queryctrl,
|
|
.g_ctrl = gc2235_g_ctrl,
|
|
.s_ctrl = gc2235_s_ctrl,
|
|
.ioctl = gc2235_ioctl,
|
|
};
|
|
|
|
static const struct v4l2_subdev_pad_ops gc2235_pad_ops = {
|
|
.enum_mbus_code = gc2235_enum_mbus_code,
|
|
.enum_frame_size = gc2235_enum_frame_size,
|
|
.get_fmt = gc2235_get_pad_format,
|
|
.set_fmt = gc2235_set_pad_format,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops gc2235_ops = {
|
|
.core = &gc2235_core_ops,
|
|
.video = &gc2235_video_ops,
|
|
.pad = &gc2235_pad_ops,
|
|
.sensor = &gc2235_sensor_ops,
|
|
};
|
|
|
|
static int gc2235_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct gc2235_device *dev = to_gc2235_sensor(sd);
|
|
dev_dbg(&client->dev, "gc2235_remove...\n");
|
|
|
|
if (dev->platform_data->platform_deinit)
|
|
dev->platform_data->platform_deinit();
|
|
|
|
dev->platform_data->csi_cfg(sd, 0);
|
|
|
|
v4l2_device_unregister_subdev(sd);
|
|
media_entity_cleanup(&dev->sd.entity);
|
|
kfree(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gc2235_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct gc2235_device *dev;
|
|
int ret;
|
|
|
|
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, &gc2235_ops);
|
|
|
|
if (client->dev.platform_data) {
|
|
ret = gc2235_s_config(&dev->sd, client->irq,
|
|
client->dev.platform_data);
|
|
if (ret)
|
|
goto out_free;
|
|
}
|
|
|
|
dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
|
dev->pad.flags = MEDIA_PAD_FL_SOURCE;
|
|
dev->format.code = V4L2_MBUS_FMT_SBGGR10_1X10;
|
|
dev->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
|
|
|
|
ret = media_entity_init(&dev->sd.entity, 1, &dev->pad, 0);
|
|
if (ret)
|
|
gc2235_remove(client);
|
|
|
|
return ret;
|
|
out_free:
|
|
v4l2_device_unregister_subdev(&dev->sd);
|
|
kfree(dev);
|
|
return ret;
|
|
}
|
|
|
|
MODULE_DEVICE_TABLE(i2c, gc2235_id);
|
|
static struct i2c_driver gc2235_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = GC2235_NAME,
|
|
},
|
|
.probe = gc2235_probe,
|
|
.remove = gc2235_remove,
|
|
.id_table = gc2235_id,
|
|
};
|
|
|
|
static int init_gc2235(void)
|
|
{
|
|
return i2c_add_driver(&gc2235_driver);
|
|
}
|
|
|
|
static void exit_gc2235(void)
|
|
{
|
|
|
|
i2c_del_driver(&gc2235_driver);
|
|
}
|
|
|
|
module_init(init_gc2235);
|
|
module_exit(exit_gc2235);
|
|
|
|
MODULE_AUTHOR("Shuguang Gong <Shuguang.Gong@intel.com>");
|
|
MODULE_DESCRIPTION("A low-level driver for GC2235 sensors");
|
|
MODULE_LICENSE("GPL");
|