7408187d22
Conversions from kmalloc+memset to k(z|c)alloc. Signed-off-by: Panagiotis Issaris <takis@issaris.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
334 lines
8.1 KiB
C
334 lines
8.1 KiB
C
/* OmniVision OV7610/OV7110 Camera Chip Support Code
|
|
*
|
|
* Copyright (c) 1999-2004 Mark McClelland <mark@alpha.dyndns.org>
|
|
* http://alpha.dyndns.org/ov511/
|
|
*
|
|
* Color fixes by by Orion Sky Lawlor <olawlor@acm.org> (2/26/2000)
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version. NO WARRANTY OF ANY KIND is expressed or implied.
|
|
*/
|
|
|
|
#define DEBUG
|
|
|
|
#include <linux/slab.h>
|
|
#include "ovcamchip_priv.h"
|
|
|
|
/* Registers */
|
|
#define REG_GAIN 0x00 /* gain [5:0] */
|
|
#define REG_BLUE 0x01 /* blue channel balance */
|
|
#define REG_RED 0x02 /* red channel balance */
|
|
#define REG_SAT 0x03 /* saturation */
|
|
#define REG_CNT 0x05 /* Y contrast */
|
|
#define REG_BRT 0x06 /* Y brightness */
|
|
#define REG_BLUE_BIAS 0x0C /* blue channel bias [5:0] */
|
|
#define REG_RED_BIAS 0x0D /* red channel bias [5:0] */
|
|
#define REG_GAMMA_COEFF 0x0E /* gamma settings */
|
|
#define REG_WB_RANGE 0x0F /* AEC/ALC/S-AWB settings */
|
|
#define REG_EXP 0x10 /* manual exposure setting */
|
|
#define REG_CLOCK 0x11 /* polarity/clock prescaler */
|
|
#define REG_FIELD_DIVIDE 0x16 /* field interval/mode settings */
|
|
#define REG_HWIN_START 0x17 /* horizontal window start */
|
|
#define REG_HWIN_END 0x18 /* horizontal window end */
|
|
#define REG_VWIN_START 0x19 /* vertical window start */
|
|
#define REG_VWIN_END 0x1A /* vertical window end */
|
|
#define REG_PIXEL_SHIFT 0x1B /* pixel shift */
|
|
#define REG_YOFFSET 0x21 /* Y channel offset */
|
|
#define REG_UOFFSET 0x22 /* U channel offset */
|
|
#define REG_ECW 0x24 /* exposure white level for AEC */
|
|
#define REG_ECB 0x25 /* exposure black level for AEC */
|
|
#define REG_FRAMERATE_H 0x2A /* frame rate MSB + misc */
|
|
#define REG_FRAMERATE_L 0x2B /* frame rate LSB */
|
|
#define REG_ALC 0x2C /* Auto Level Control settings */
|
|
#define REG_VOFFSET 0x2E /* V channel offset adjustment */
|
|
#define REG_ARRAY_BIAS 0x2F /* array bias -- don't change */
|
|
#define REG_YGAMMA 0x33 /* misc gamma settings [7:6] */
|
|
#define REG_BIAS_ADJUST 0x34 /* misc bias settings */
|
|
|
|
/* Window parameters */
|
|
#define HWSBASE 0x38
|
|
#define HWEBASE 0x3a
|
|
#define VWSBASE 0x05
|
|
#define VWEBASE 0x05
|
|
|
|
struct ov7x10 {
|
|
int auto_brt;
|
|
int auto_exp;
|
|
int bandfilt;
|
|
int mirror;
|
|
};
|
|
|
|
/* Lawrence Glaister <lg@jfm.bc.ca> reports:
|
|
*
|
|
* Register 0x0f in the 7610 has the following effects:
|
|
*
|
|
* 0x85 (AEC method 1): Best overall, good contrast range
|
|
* 0x45 (AEC method 2): Very overexposed
|
|
* 0xa5 (spec sheet default): Ok, but the black level is
|
|
* shifted resulting in loss of contrast
|
|
* 0x05 (old driver setting): very overexposed, too much
|
|
* contrast
|
|
*/
|
|
static struct ovcamchip_regvals regvals_init_7x10[] = {
|
|
{ 0x10, 0xff },
|
|
{ 0x16, 0x03 },
|
|
{ 0x28, 0x24 },
|
|
{ 0x2b, 0xac },
|
|
{ 0x12, 0x00 },
|
|
{ 0x38, 0x81 },
|
|
{ 0x28, 0x24 }, /* 0c */
|
|
{ 0x0f, 0x85 }, /* lg's setting */
|
|
{ 0x15, 0x01 },
|
|
{ 0x20, 0x1c },
|
|
{ 0x23, 0x2a },
|
|
{ 0x24, 0x10 },
|
|
{ 0x25, 0x8a },
|
|
{ 0x26, 0xa2 },
|
|
{ 0x27, 0xc2 },
|
|
{ 0x2a, 0x04 },
|
|
{ 0x2c, 0xfe },
|
|
{ 0x2d, 0x93 },
|
|
{ 0x30, 0x71 },
|
|
{ 0x31, 0x60 },
|
|
{ 0x32, 0x26 },
|
|
{ 0x33, 0x20 },
|
|
{ 0x34, 0x48 },
|
|
{ 0x12, 0x24 },
|
|
{ 0x11, 0x01 },
|
|
{ 0x0c, 0x24 },
|
|
{ 0x0d, 0x24 },
|
|
{ 0xff, 0xff }, /* END MARKER */
|
|
};
|
|
|
|
/* This initializes the OV7x10 camera chip and relevant variables. */
|
|
static int ov7x10_init(struct i2c_client *c)
|
|
{
|
|
struct ovcamchip *ov = i2c_get_clientdata(c);
|
|
struct ov7x10 *s;
|
|
int rc;
|
|
|
|
DDEBUG(4, &c->dev, "entered");
|
|
|
|
rc = ov_write_regvals(c, regvals_init_7x10);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
ov->spriv = s = kzalloc(sizeof *s, GFP_KERNEL);
|
|
if (!s)
|
|
return -ENOMEM;
|
|
|
|
s->auto_brt = 1;
|
|
s->auto_exp = 1;
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int ov7x10_free(struct i2c_client *c)
|
|
{
|
|
struct ovcamchip *ov = i2c_get_clientdata(c);
|
|
|
|
kfree(ov->spriv);
|
|
return 0;
|
|
}
|
|
|
|
static int ov7x10_set_control(struct i2c_client *c,
|
|
struct ovcamchip_control *ctl)
|
|
{
|
|
struct ovcamchip *ov = i2c_get_clientdata(c);
|
|
struct ov7x10 *s = ov->spriv;
|
|
int rc;
|
|
int v = ctl->value;
|
|
|
|
switch (ctl->id) {
|
|
case OVCAMCHIP_CID_CONT:
|
|
rc = ov_write(c, REG_CNT, v >> 8);
|
|
break;
|
|
case OVCAMCHIP_CID_BRIGHT:
|
|
rc = ov_write(c, REG_BRT, v >> 8);
|
|
break;
|
|
case OVCAMCHIP_CID_SAT:
|
|
rc = ov_write(c, REG_SAT, v >> 8);
|
|
break;
|
|
case OVCAMCHIP_CID_HUE:
|
|
rc = ov_write(c, REG_RED, 0xFF - (v >> 8));
|
|
if (rc < 0)
|
|
goto out;
|
|
|
|
rc = ov_write(c, REG_BLUE, v >> 8);
|
|
break;
|
|
case OVCAMCHIP_CID_EXP:
|
|
rc = ov_write(c, REG_EXP, v);
|
|
break;
|
|
case OVCAMCHIP_CID_FREQ:
|
|
{
|
|
int sixty = (v == 60);
|
|
|
|
rc = ov_write_mask(c, 0x2a, sixty?0x00:0x80, 0x80);
|
|
if (rc < 0)
|
|
goto out;
|
|
|
|
rc = ov_write(c, 0x2b, sixty?0x00:0xac);
|
|
if (rc < 0)
|
|
goto out;
|
|
|
|
rc = ov_write_mask(c, 0x13, 0x10, 0x10);
|
|
if (rc < 0)
|
|
goto out;
|
|
|
|
rc = ov_write_mask(c, 0x13, 0x00, 0x10);
|
|
break;
|
|
}
|
|
case OVCAMCHIP_CID_BANDFILT:
|
|
rc = ov_write_mask(c, 0x2d, v?0x04:0x00, 0x04);
|
|
s->bandfilt = v;
|
|
break;
|
|
case OVCAMCHIP_CID_AUTOBRIGHT:
|
|
rc = ov_write_mask(c, 0x2d, v?0x10:0x00, 0x10);
|
|
s->auto_brt = v;
|
|
break;
|
|
case OVCAMCHIP_CID_AUTOEXP:
|
|
rc = ov_write_mask(c, 0x29, v?0x00:0x80, 0x80);
|
|
s->auto_exp = v;
|
|
break;
|
|
case OVCAMCHIP_CID_MIRROR:
|
|
rc = ov_write_mask(c, 0x12, v?0x40:0x00, 0x40);
|
|
s->mirror = v;
|
|
break;
|
|
default:
|
|
DDEBUG(2, &c->dev, "control not supported: %d", ctl->id);
|
|
return -EPERM;
|
|
}
|
|
|
|
out:
|
|
DDEBUG(3, &c->dev, "id=%d, arg=%d, rc=%d", ctl->id, v, rc);
|
|
return rc;
|
|
}
|
|
|
|
static int ov7x10_get_control(struct i2c_client *c,
|
|
struct ovcamchip_control *ctl)
|
|
{
|
|
struct ovcamchip *ov = i2c_get_clientdata(c);
|
|
struct ov7x10 *s = ov->spriv;
|
|
int rc = 0;
|
|
unsigned char val = 0;
|
|
|
|
switch (ctl->id) {
|
|
case OVCAMCHIP_CID_CONT:
|
|
rc = ov_read(c, REG_CNT, &val);
|
|
ctl->value = val << 8;
|
|
break;
|
|
case OVCAMCHIP_CID_BRIGHT:
|
|
rc = ov_read(c, REG_BRT, &val);
|
|
ctl->value = val << 8;
|
|
break;
|
|
case OVCAMCHIP_CID_SAT:
|
|
rc = ov_read(c, REG_SAT, &val);
|
|
ctl->value = val << 8;
|
|
break;
|
|
case OVCAMCHIP_CID_HUE:
|
|
rc = ov_read(c, REG_BLUE, &val);
|
|
ctl->value = val << 8;
|
|
break;
|
|
case OVCAMCHIP_CID_EXP:
|
|
rc = ov_read(c, REG_EXP, &val);
|
|
ctl->value = val;
|
|
break;
|
|
case OVCAMCHIP_CID_BANDFILT:
|
|
ctl->value = s->bandfilt;
|
|
break;
|
|
case OVCAMCHIP_CID_AUTOBRIGHT:
|
|
ctl->value = s->auto_brt;
|
|
break;
|
|
case OVCAMCHIP_CID_AUTOEXP:
|
|
ctl->value = s->auto_exp;
|
|
break;
|
|
case OVCAMCHIP_CID_MIRROR:
|
|
ctl->value = s->mirror;
|
|
break;
|
|
default:
|
|
DDEBUG(2, &c->dev, "control not supported: %d", ctl->id);
|
|
return -EPERM;
|
|
}
|
|
|
|
DDEBUG(3, &c->dev, "id=%d, arg=%d, rc=%d", ctl->id, ctl->value, rc);
|
|
return rc;
|
|
}
|
|
|
|
static int ov7x10_mode_init(struct i2c_client *c, struct ovcamchip_window *win)
|
|
{
|
|
int qvga = win->quarter;
|
|
|
|
/******** QVGA-specific regs ********/
|
|
|
|
ov_write(c, 0x14, qvga?0x24:0x04);
|
|
|
|
/******** Palette-specific regs ********/
|
|
|
|
if (win->format == VIDEO_PALETTE_GREY) {
|
|
ov_write_mask(c, 0x0e, 0x40, 0x40);
|
|
ov_write_mask(c, 0x13, 0x20, 0x20);
|
|
} else {
|
|
ov_write_mask(c, 0x0e, 0x00, 0x40);
|
|
ov_write_mask(c, 0x13, 0x00, 0x20);
|
|
}
|
|
|
|
/******** Clock programming ********/
|
|
|
|
ov_write(c, 0x11, win->clockdiv);
|
|
|
|
/******** Resolution-specific ********/
|
|
|
|
if (win->width == 640 && win->height == 480)
|
|
ov_write(c, 0x35, 0x9e);
|
|
else
|
|
ov_write(c, 0x35, 0x1e);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ov7x10_set_window(struct i2c_client *c, struct ovcamchip_window *win)
|
|
{
|
|
int ret, hwscale, vwscale;
|
|
|
|
ret = ov7x10_mode_init(c, win);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (win->quarter) {
|
|
hwscale = 1;
|
|
vwscale = 0;
|
|
} else {
|
|
hwscale = 2;
|
|
vwscale = 1;
|
|
}
|
|
|
|
ov_write(c, 0x17, HWSBASE + (win->x >> hwscale));
|
|
ov_write(c, 0x18, HWEBASE + ((win->x + win->width) >> hwscale));
|
|
ov_write(c, 0x19, VWSBASE + (win->y >> vwscale));
|
|
ov_write(c, 0x1a, VWEBASE + ((win->y + win->height) >> vwscale));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ov7x10_command(struct i2c_client *c, unsigned int cmd, void *arg)
|
|
{
|
|
switch (cmd) {
|
|
case OVCAMCHIP_CMD_S_CTRL:
|
|
return ov7x10_set_control(c, arg);
|
|
case OVCAMCHIP_CMD_G_CTRL:
|
|
return ov7x10_get_control(c, arg);
|
|
case OVCAMCHIP_CMD_S_MODE:
|
|
return ov7x10_set_window(c, arg);
|
|
default:
|
|
DDEBUG(2, &c->dev, "command not supported: %d", cmd);
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
}
|
|
|
|
struct ovcamchip_ops ov7x10_ops = {
|
|
.init = ov7x10_init,
|
|
.free = ov7x10_free,
|
|
.command = ov7x10_command,
|
|
};
|