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/*
* Driver for ov3660 CMOS Image Sensor from Omnivision
*
* 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.
*/
#include <asm/errno.h>
#include "../cmos-subdev.h"
#include "../../wmt-vid.h"
#include "ov3660.h"
#define sensor_write_array(sd, arr, sz) \
cmos_init_16bit_addr(arr, sz, (sd)->i2c_addr)
#define sensor_read(sd, reg) \
wmt_vid_i2c_read16addr(sd->i2c_addr, reg)
#define sensor_write(sd, reg, val) \
wmt_vid_i2c_write16addr(sd->i2c_addr, reg, val)
struct cmos_win_size {
char *name;
int width;
int height;
uint32_t *regs;
size_t size;
};
#define CMOS_WIN_SIZE(n, w, h, r) \
{.name = n, .width = w , .height = h, .regs = r, .size = ARRAY_SIZE(r) }
static const struct cmos_win_size cmos_supported_win_sizes[] = {
CMOS_WIN_SIZE("VGA", 640, 480, ov3660_640_480_regs),
CMOS_WIN_SIZE("QXGA", 2048, 1536, ov3660_2048_1536_regs),
};
static const struct cmos_win_size *cmos_select_win(u32 *width, u32 *height)
{
int i;
for (i = 0; i < ARRAY_SIZE(cmos_supported_win_sizes); i++) {
if (cmos_supported_win_sizes[i].width == *width &&
cmos_supported_win_sizes[i].height == *height) {
*width = cmos_supported_win_sizes[i].width;
*height = cmos_supported_win_sizes[i].height;
return &cmos_supported_win_sizes[i];
}
}
return NULL;
}
static int sensor_s_wb(struct cmos_subdev *sd, enum v4l2_wb_mode value)
{
uint32_t *regs;
size_t size;
switch (value) {
case WHITE_BALANCE_AUTO:
regs = ov3660_wb_auto;
size = ARRAY_SIZE(ov3660_wb_auto);
break;
case WHITE_BALANCE_INCANDESCENCE:
regs = ov3660_wb_incandescent;
size = ARRAY_SIZE(ov3660_wb_incandescent);
break;
case WHITE_BALANCE_DAYLIGHT:
regs = ov3660_wb_daylight;
size = ARRAY_SIZE(ov3660_wb_daylight);
break;
case WHITE_BALANCE_CLOUDY:
regs = ov3660_wb_cloudy;
size = ARRAY_SIZE(ov3660_wb_cloudy);
break;
case WHITE_BALANCE_FLUORESCENT:
regs = ov3660_wb_fluorescent;
size = ARRAY_SIZE(ov3660_wb_fluorescent);
break;
default:
return -EINVAL;
}
sensor_write_array(sd, regs, size);
return 0;
}
static int sensor_queryctrl(struct cmos_subdev *sd, struct v4l2_queryctrl *qc)
{
switch (qc->id) {
case V4L2_CID_VFLIP:
case V4L2_CID_HFLIP:
return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
case V4L2_CID_DO_WHITE_BALANCE:
return v4l2_ctrl_query_fill(qc, 0, 3, 1, 0);
}
return -EINVAL;
}
static int sensor_s_ctrl(struct cmos_subdev *sd, struct v4l2_control *ctrl)
{
switch (ctrl->id) {
case V4L2_CID_VFLIP:
case V4L2_CID_HFLIP:
case V4L2_CID_DO_WHITE_BALANCE:
return sensor_s_wb(sd, ctrl->value);
}
return -EINVAL;
}
static int sensor_g_mbus_fmt(struct cmos_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
return -EINVAL;
}
static int sensor_s_mbus_fmt(struct cmos_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
const struct cmos_win_size *win;
win = cmos_select_win(&mf->width, &mf->height);
if (!win)
return -EINVAL;
sensor_write_array(sd, win->regs, win->size);
return 0;
}
static int sensor_try_mbus_fmt(struct cmos_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
const struct cmos_win_size *win;
/*
* select suitable win
*/
win = cmos_select_win(&mf->width, &mf->height);
return 0;
}
static int sensor_identify(struct cmos_subdev *sd)
{
uint32_t data;
data = sensor_read(sd, 0x300a);
data <<= 8;
data |= sensor_read(sd, 0x300b);
return (data == sd->id) ? 0 : 1;
}
static int sensor_init(struct cmos_subdev *sd)
{
if (!sensor_identify(sd))
return -1;
sensor_write(sd, 0x3103, 0x11);
sensor_write(sd, 0x3008, 0x82);
msleep(5);
sensor_write_array(sd, ov3660_default_regs_init,
ARRAY_SIZE(ov3660_default_regs_init));
return 0;
}
static int sensor_exit(struct cmos_subdev *sd)
{
sensor_write(sd, 0x3017, 0x80);
sensor_write(sd, 0x3018, 0x03);
return 0;
}
static struct cmos_subdev_ops ov3660_ops = {
.identify = sensor_identify,
.init = sensor_init,
.exit = sensor_exit,
.queryctrl = sensor_queryctrl,
.s_ctrl = sensor_s_ctrl,
.s_mbus_fmt = sensor_s_mbus_fmt,
.g_mbus_fmt = sensor_g_mbus_fmt,
.try_mbus_fmt = sensor_try_mbus_fmt,
};
struct cmos_subdev ov3660 = {
.name = "ov3660",
.i2c_addr = 0x3c,
.id = 0x3660,
.max_width = 2048,
.max_height = 1536,
.ops = &ov3660_ops,
};
static int __init ov3660_init(void)
{
return cmos_register_sudbdev(&ov3660);
}
static void __exit ov3660_exit(void)
{
cmos_unregister_subdev(&ov3660);
return;
}
module_init(ov3660_init);
module_exit(ov3660_exit);
MODULE_LICENSE("GPL");
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