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* Copyright (C) 2008-2009 QUALCOMM Incorporated.
*/
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/i2c.h>
#include <linux/uaccess.h>
#include <linux/miscdevice.h>
#include <media/msm_camera.h>
#include <mach/gpio.h>
#include "mt9d112.h"
/* Micron MT9D112 Registers and their values */
/* Sensor Core Registers */
#define REG_MT9D112_MODEL_ID 0x3000
#define MT9D112_MODEL_ID 0x1580
/* SOC Registers Page 1 */
#define REG_MT9D112_SENSOR_RESET 0x301A
#define REG_MT9D112_STANDBY_CONTROL 0x3202
#define REG_MT9D112_MCU_BOOT 0x3386
struct mt9d112_work {
struct work_struct work;
};
static struct mt9d112_work *mt9d112_sensorw;
static struct i2c_client *mt9d112_client;
struct mt9d112_ctrl {
const struct msm_camera_sensor_info *sensordata;
};
static struct mt9d112_ctrl *mt9d112_ctrl;
static DECLARE_WAIT_QUEUE_HEAD(mt9d112_wait_queue);
DECLARE_MUTEX(mt9d112_sem);
/*=============================================================
EXTERNAL DECLARATIONS
==============================================================*/
extern struct mt9d112_reg mt9d112_regs;
/*=============================================================*/
static int mt9d112_reset(const struct msm_camera_sensor_info *dev)
{
int rc = 0;
rc = gpio_request(dev->sensor_reset, "mt9d112");
if (!rc) {
rc = gpio_direction_output(dev->sensor_reset, 0);
mdelay(20);
rc = gpio_direction_output(dev->sensor_reset, 1);
}
gpio_free(dev->sensor_reset);
return rc;
}
static int32_t mt9d112_i2c_txdata(unsigned short saddr,
unsigned char *txdata, int length)
{
struct i2c_msg msg[] = {
{
.addr = saddr,
.flags = 0,
.len = length,
.buf = txdata,
},
};
if (i2c_transfer(mt9d112_client->adapter, msg, 1) < 0) {
CDBG("mt9d112_i2c_txdata failed\n");
return -EIO;
}
return 0;
}
static int32_t mt9d112_i2c_write(unsigned short saddr,
unsigned short waddr, unsigned short wdata, enum mt9d112_width width)
{
int32_t rc = -EIO;
unsigned char buf[4];
memset(buf, 0, sizeof(buf));
switch (width) {
case WORD_LEN: {
buf[0] = (waddr & 0xFF00)>>8;
buf[1] = (waddr & 0x00FF);
buf[2] = (wdata & 0xFF00)>>8;
buf[3] = (wdata & 0x00FF);
rc = mt9d112_i2c_txdata(saddr, buf, 4);
}
break;
case BYTE_LEN: {
buf[0] = waddr;
buf[1] = wdata;
rc = mt9d112_i2c_txdata(saddr, buf, 2);
}
break;
default:
break;
}
if (rc < 0)
CDBG(
"i2c_write failed, addr = 0x%x, val = 0x%x!\n",
waddr, wdata);
return rc;
}
static int32_t mt9d112_i2c_write_table(
struct mt9d112_i2c_reg_conf const *reg_conf_tbl,
int num_of_items_in_table)
{
int i;
int32_t rc = -EIO;
for (i = 0; i < num_of_items_in_table; i++) {
rc = mt9d112_i2c_write(mt9d112_client->addr,
reg_conf_tbl->waddr, reg_conf_tbl->wdata,
reg_conf_tbl->width);
if (rc < 0)
break;
if (reg_conf_tbl->mdelay_time != 0)
mdelay(reg_conf_tbl->mdelay_time);
reg_conf_tbl++;
}
return rc;
}
static int mt9d112_i2c_rxdata(unsigned short saddr,
unsigned char *rxdata, int length)
{
struct i2c_msg msgs[] = {
{
.addr = saddr,
.flags = 0,
.len = 2,
.buf = rxdata,
},
{
.addr = saddr,
.flags = I2C_M_RD,
.len = length,
.buf = rxdata,
},
};
if (i2c_transfer(mt9d112_client->adapter, msgs, 2) < 0) {
CDBG("mt9d112_i2c_rxdata failed!\n");
return -EIO;
}
return 0;
}
static int32_t mt9d112_i2c_read(unsigned short saddr,
unsigned short raddr, unsigned short *rdata, enum mt9d112_width width)
{
int32_t rc = 0;
unsigned char buf[4];
if (!rdata)
return -EIO;
memset(buf, 0, sizeof(buf));
switch (width) {
case WORD_LEN: {
buf[0] = (raddr & 0xFF00)>>8;
buf[1] = (raddr & 0x00FF);
rc = mt9d112_i2c_rxdata(saddr, buf, 2);
if (rc < 0)
return rc;
*rdata = buf[0] << 8 | buf[1];
}
break;
default:
break;
}
if (rc < 0)
CDBG("mt9d112_i2c_read failed!\n");
return rc;
}
static int32_t mt9d112_set_lens_roll_off(void)
{
int32_t rc = 0;
rc = mt9d112_i2c_write_table(&mt9d112_regs.rftbl[0],
mt9d112_regs.rftbl_size);
return rc;
}
static long mt9d112_reg_init(void)
{
int32_t array_length;
int32_t i;
long rc;
/* PLL Setup Start */
rc = mt9d112_i2c_write_table(&mt9d112_regs.plltbl[0],
mt9d112_regs.plltbl_size);
if (rc < 0)
return rc;
/* PLL Setup End */
array_length = mt9d112_regs.prev_snap_reg_settings_size;
/* Configure sensor for Preview mode and Snapshot mode */
for (i = 0; i < array_length; i++) {
rc = mt9d112_i2c_write(mt9d112_client->addr,
mt9d112_regs.prev_snap_reg_settings[i].register_address,
mt9d112_regs.prev_snap_reg_settings[i].register_value,
WORD_LEN);
if (rc < 0)
return rc;
}
/* Configure for Noise Reduction, Saturation and Aperture Correction */
array_length = mt9d112_regs.noise_reduction_reg_settings_size;
for (i = 0; i < array_length; i++) {
rc = mt9d112_i2c_write(mt9d112_client->addr,
mt9d112_regs.noise_reduction_reg_settings[i].register_address,
mt9d112_regs.noise_reduction_reg_settings[i].register_value,
WORD_LEN);
if (rc < 0)
return rc;
}
/* Set Color Kill Saturation point to optimum value */
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x35A4,
0x0593,
WORD_LEN);
if (rc < 0)
return rc;
rc = mt9d112_i2c_write_table(&mt9d112_regs.stbl[0],
mt9d112_regs.stbl_size);
if (rc < 0)
return rc;
rc = mt9d112_set_lens_roll_off();
if (rc < 0)
return rc;
return 0;
}
static long mt9d112_set_sensor_mode(int mode)
{
uint16_t clock;
long rc = 0;
switch (mode) {
case SENSOR_PREVIEW_MODE:
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x338C, 0xA20C, WORD_LEN);
if (rc < 0)
return rc;
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x3390, 0x0004, WORD_LEN);
if (rc < 0)
return rc;
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x338C, 0xA215, WORD_LEN);
if (rc < 0)
return rc;
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x3390, 0x0004, WORD_LEN);
if (rc < 0)
return rc;
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x338C, 0xA20B, WORD_LEN);
if (rc < 0)
return rc;
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x3390, 0x0000, WORD_LEN);
if (rc < 0)
return rc;
clock = 0x0250;
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x341C, clock, WORD_LEN);
if (rc < 0)
return rc;
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x338C, 0xA103, WORD_LEN);
if (rc < 0)
return rc;
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x3390, 0x0001, WORD_LEN);
if (rc < 0)
return rc;
mdelay(5);
break;
case SENSOR_SNAPSHOT_MODE:
/* Switch to lower fps for Snapshot */
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x341C, 0x0120, WORD_LEN);
if (rc < 0)
return rc;
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x338C, 0xA120, WORD_LEN);
if (rc < 0)
return rc;
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x3390, 0x0002, WORD_LEN);
if (rc < 0)
return rc;
mdelay(5);
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x338C, 0xA103, WORD_LEN);
if (rc < 0)
return rc;
rc =
mt9d112_i2c_write(mt9d112_client->addr,
0x3390, 0x0002, WORD_LEN);
if (rc < 0)
return rc;
break;
default:
return -EINVAL;
}
return 0;
}
static long mt9d112_set_effect(int mode, int effect)
{
uint16_t reg_addr;
uint16_t reg_val;
long rc = 0;
switch (mode) {
case SENSOR_PREVIEW_MODE:
/* Context A Special Effects */
reg_addr = 0x2799;
break;
case SENSOR_SNAPSHOT_MODE:
/* Context B Special Effects */
reg_addr = 0x279B;
break;
default:
reg_addr = 0x2799;
break;
}
switch (effect) {
case CAMERA_EFFECT_OFF: {
reg_val = 0x6440;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x338C, reg_addr, WORD_LEN);
if (rc < 0)
return rc;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x3390, reg_val, WORD_LEN);
if (rc < 0)
return rc;
}
break;
case CAMERA_EFFECT_MONO: {
reg_val = 0x6441;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x338C, reg_addr, WORD_LEN);
if (rc < 0)
return rc;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x3390, reg_val, WORD_LEN);
if (rc < 0)
return rc;
}
break;
case CAMERA_EFFECT_NEGATIVE: {
reg_val = 0x6443;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x338C, reg_addr, WORD_LEN);
if (rc < 0)
return rc;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x3390, reg_val, WORD_LEN);
if (rc < 0)
return rc;
}
break;
case CAMERA_EFFECT_SOLARIZE: {
reg_val = 0x6445;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x338C, reg_addr, WORD_LEN);
if (rc < 0)
return rc;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x3390, reg_val, WORD_LEN);
if (rc < 0)
return rc;
}
break;
case CAMERA_EFFECT_SEPIA: {
reg_val = 0x6442;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x338C, reg_addr, WORD_LEN);
if (rc < 0)
return rc;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x3390, reg_val, WORD_LEN);
if (rc < 0)
return rc;
}
break;
case CAMERA_EFFECT_PASTEL:
case CAMERA_EFFECT_MOSAIC:
case CAMERA_EFFECT_RESIZE:
return -EINVAL;
default: {
reg_val = 0x6440;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x338C, reg_addr, WORD_LEN);
if (rc < 0)
return rc;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x3390, reg_val, WORD_LEN);
if (rc < 0)
return rc;
return -EINVAL;
}
}
/* Refresh Sequencer */
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x338C, 0xA103, WORD_LEN);
if (rc < 0)
return rc;
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x3390, 0x0005, WORD_LEN);
return rc;
}
static int mt9d112_sensor_init_probe(const struct msm_camera_sensor_info *data)
{
uint16_t model_id = 0;
int rc = 0;
CDBG("init entry \n");
rc = mt9d112_reset(data);
if (rc < 0) {
CDBG("reset failed!\n");
goto init_probe_fail;
}
mdelay(5);
/* Micron suggested Power up block Start:
* Put MCU into Reset - Stop MCU */
rc = mt9d112_i2c_write(mt9d112_client->addr,
REG_MT9D112_MCU_BOOT, 0x0501, WORD_LEN);
if (rc < 0)
goto init_probe_fail;
/* Pull MCU from Reset - Start MCU */
rc = mt9d112_i2c_write(mt9d112_client->addr,
REG_MT9D112_MCU_BOOT, 0x0500, WORD_LEN);
if (rc < 0)
goto init_probe_fail;
mdelay(5);
/* Micron Suggested - Power up block */
rc = mt9d112_i2c_write(mt9d112_client->addr,
REG_MT9D112_SENSOR_RESET, 0x0ACC, WORD_LEN);
if (rc < 0)
goto init_probe_fail;
rc = mt9d112_i2c_write(mt9d112_client->addr,
REG_MT9D112_STANDBY_CONTROL, 0x0008, WORD_LEN);
if (rc < 0)
goto init_probe_fail;
/* FUSED_DEFECT_CORRECTION */
rc = mt9d112_i2c_write(mt9d112_client->addr,
0x33F4, 0x031D, WORD_LEN);
if (rc < 0)
goto init_probe_fail;
mdelay(5);
/* Micron suggested Power up block End */
/* Read the Model ID of the sensor */
rc = mt9d112_i2c_read(mt9d112_client->addr,
REG_MT9D112_MODEL_ID, &model_id, WORD_LEN);
if (rc < 0)
goto init_probe_fail;
CDBG("mt9d112 model_id = 0x%x\n", model_id);
/* Check if it matches it with the value in Datasheet */
if (model_id != MT9D112_MODEL_ID) {
rc = -EINVAL;
goto init_probe_fail;
}
rc = mt9d112_reg_init();
if (rc < 0)
goto init_probe_fail;
return rc;
init_probe_fail:
return rc;
}
int mt9d112_sensor_init(const struct msm_camera_sensor_info *data)
{
int rc = 0;
mt9d112_ctrl = kzalloc(sizeof(struct mt9d112_ctrl), GFP_KERNEL);
if (!mt9d112_ctrl) {
CDBG("mt9d112_init failed!\n");
rc = -ENOMEM;
goto init_done;
}
if (data)
mt9d112_ctrl->sensordata = data;
/* Input MCLK = 24MHz */
msm_camio_clk_rate_set(24000000);
mdelay(5);
msm_camio_camif_pad_reg_reset();
rc = mt9d112_sensor_init_probe(data);
if (rc < 0) {
CDBG("mt9d112_sensor_init failed!\n");
goto init_fail;
}
init_done:
return rc;
init_fail:
kfree(mt9d112_ctrl);
return rc;
}
static int mt9d112_init_client(struct i2c_client *client)
{
/* Initialize the MSM_CAMI2C Chip */
init_waitqueue_head(&mt9d112_wait_queue);
return 0;
}
int mt9d112_sensor_config(void __user *argp)
{
struct sensor_cfg_data cfg_data;
long rc = 0;
if (copy_from_user(&cfg_data,
(void *)argp,
sizeof(struct sensor_cfg_data)))
return -EFAULT;
/* down(&mt9d112_sem); */
CDBG("mt9d112_ioctl, cfgtype = %d, mode = %d\n",
cfg_data.cfgtype, cfg_data.mode);
switch (cfg_data.cfgtype) {
case CFG_SET_MODE:
rc = mt9d112_set_sensor_mode(
cfg_data.mode);
break;
case CFG_SET_EFFECT:
rc = mt9d112_set_effect(cfg_data.mode,
cfg_data.cfg.effect);
break;
case CFG_GET_AF_MAX_STEPS:
default:
rc = -EINVAL;
break;
}
/* up(&mt9d112_sem); */
return rc;
}
int mt9d112_sensor_release(void)
{
int rc = 0;
/* down(&mt9d112_sem); */
kfree(mt9d112_ctrl);
/* up(&mt9d112_sem); */
return rc;
}
static int mt9d112_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int rc = 0;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
rc = -ENOTSUPP;
goto probe_failure;
}
mt9d112_sensorw =
kzalloc(sizeof(struct mt9d112_work), GFP_KERNEL);
if (!mt9d112_sensorw) {
rc = -ENOMEM;
goto probe_failure;
}
i2c_set_clientdata(client, mt9d112_sensorw);
mt9d112_init_client(client);
mt9d112_client = client;
CDBG("mt9d112_probe succeeded!\n");
return 0;
probe_failure:
kfree(mt9d112_sensorw);
mt9d112_sensorw = NULL;
CDBG("mt9d112_probe failed!\n");
return rc;
}
static const struct i2c_device_id mt9d112_i2c_id[] = {
{ "mt9d112", 0},
{ },
};
static struct i2c_driver mt9d112_i2c_driver = {
.id_table = mt9d112_i2c_id,
.probe = mt9d112_i2c_probe,
.remove = __exit_p(mt9d112_i2c_remove),
.driver = {
.name = "mt9d112",
},
};
static int mt9d112_sensor_probe(const struct msm_camera_sensor_info *info,
struct msm_sensor_ctrl *s)
{
int rc = i2c_add_driver(&mt9d112_i2c_driver);
if (rc < 0 || mt9d112_client == NULL) {
rc = -ENOTSUPP;
goto probe_done;
}
/* Input MCLK = 24MHz */
msm_camio_clk_rate_set(24000000);
mdelay(5);
rc = mt9d112_sensor_init_probe(info);
if (rc < 0)
goto probe_done;
s->s_init = mt9d112_sensor_init;
s->s_release = mt9d112_sensor_release;
s->s_config = mt9d112_sensor_config;
probe_done:
CDBG("%s %s:%d\n", __FILE__, __func__, __LINE__);
return rc;
}
static int __mt9d112_probe(struct platform_device *pdev)
{
return msm_camera_drv_start(pdev, mt9d112_sensor_probe);
}
static struct platform_driver msm_camera_driver = {
.probe = __mt9d112_probe,
.driver = {
.name = "msm_camera_mt9d112",
.owner = THIS_MODULE,
},
};
static int __init mt9d112_init(void)
{
return platform_driver_register(&msm_camera_driver);
}
module_init(mt9d112_init);
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