From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/media/video/ovcamchip/Makefile | 4 + drivers/media/video/ovcamchip/ov6x20.c | 415 ++++++++++++++++++++++ drivers/media/video/ovcamchip/ov6x30.c | 374 ++++++++++++++++++++ drivers/media/video/ovcamchip/ov76be.c | 303 ++++++++++++++++ drivers/media/video/ovcamchip/ov7x10.c | 335 ++++++++++++++++++ drivers/media/video/ovcamchip/ov7x20.c | 455 +++++++++++++++++++++++++ drivers/media/video/ovcamchip/ovcamchip_core.c | 444 ++++++++++++++++++++++++ drivers/media/video/ovcamchip/ovcamchip_priv.h | 87 +++++ 8 files changed, 2417 insertions(+) create mode 100644 drivers/media/video/ovcamchip/Makefile create mode 100644 drivers/media/video/ovcamchip/ov6x20.c create mode 100644 drivers/media/video/ovcamchip/ov6x30.c create mode 100644 drivers/media/video/ovcamchip/ov76be.c create mode 100644 drivers/media/video/ovcamchip/ov7x10.c create mode 100644 drivers/media/video/ovcamchip/ov7x20.c create mode 100644 drivers/media/video/ovcamchip/ovcamchip_core.c create mode 100644 drivers/media/video/ovcamchip/ovcamchip_priv.h (limited to 'drivers/media/video/ovcamchip') diff --git a/drivers/media/video/ovcamchip/Makefile b/drivers/media/video/ovcamchip/Makefile new file mode 100644 index 00000000000..bca41ad93de --- /dev/null +++ b/drivers/media/video/ovcamchip/Makefile @@ -0,0 +1,4 @@ +ovcamchip-objs := ovcamchip_core.o ov6x20.o ov6x30.o ov7x10.o ov7x20.o \ + ov76be.o + +obj-$(CONFIG_VIDEO_OVCAMCHIP) += ovcamchip.o diff --git a/drivers/media/video/ovcamchip/ov6x20.c b/drivers/media/video/ovcamchip/ov6x20.c new file mode 100644 index 00000000000..3433619ad93 --- /dev/null +++ b/drivers/media/video/ovcamchip/ov6x20.c @@ -0,0 +1,415 @@ +/* OmniVision OV6620/OV6120 Camera Chip Support Code + * + * Copyright (c) 1999-2004 Mark McClelland + * http://alpha.dyndns.org/ov511/ + * + * 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 +#include "ovcamchip_priv.h" + +/* Registers */ +#define REG_GAIN 0x00 /* gain [5:0] */ +#define REG_BLUE 0x01 /* blue gain */ +#define REG_RED 0x02 /* red gain */ +#define REG_SAT 0x03 /* saturation */ +#define REG_CNT 0x05 /* Y contrast */ +#define REG_BRT 0x06 /* Y brightness */ +#define REG_WB_BLUE 0x0C /* WB blue ratio [5:0] */ +#define REG_WB_RED 0x0D /* WB red ratio [5:0] */ +#define REG_EXP 0x10 /* exposure */ + +/* Window parameters */ +#define HWSBASE 0x38 +#define HWEBASE 0x3A +#define VWSBASE 0x05 +#define VWEBASE 0x06 + +struct ov6x20 { + int auto_brt; + int auto_exp; + int backlight; + int bandfilt; + int mirror; +}; + +/* Initial values for use with OV511/OV511+ cameras */ +static struct ovcamchip_regvals regvals_init_6x20_511[] = { + { 0x12, 0x80 }, /* reset */ + { 0x11, 0x01 }, + { 0x03, 0x60 }, + { 0x05, 0x7f }, /* For when autoadjust is off */ + { 0x07, 0xa8 }, + { 0x0c, 0x24 }, + { 0x0d, 0x24 }, + { 0x0f, 0x15 }, /* COMS */ + { 0x10, 0x75 }, /* AEC Exposure time */ + { 0x12, 0x24 }, /* Enable AGC and AWB */ + { 0x14, 0x04 }, + { 0x16, 0x03 }, + { 0x26, 0xb2 }, /* BLC enable */ + /* 0x28: 0x05 Selects RGB format if RGB on */ + { 0x28, 0x05 }, + { 0x2a, 0x04 }, /* Disable framerate adjust */ + { 0x2d, 0x99 }, + { 0x33, 0xa0 }, /* Color Processing Parameter */ + { 0x34, 0xd2 }, /* Max A/D range */ + { 0x38, 0x8b }, + { 0x39, 0x40 }, + + { 0x3c, 0x39 }, /* Enable AEC mode changing */ + { 0x3c, 0x3c }, /* Change AEC mode */ + { 0x3c, 0x24 }, /* Disable AEC mode changing */ + + { 0x3d, 0x80 }, + /* These next two registers (0x4a, 0x4b) are undocumented. They + * control the color balance */ + { 0x4a, 0x80 }, + { 0x4b, 0x80 }, + { 0x4d, 0xd2 }, /* This reduces noise a bit */ + { 0x4e, 0xc1 }, + { 0x4f, 0x04 }, + { 0xff, 0xff }, /* END MARKER */ +}; + +/* Initial values for use with OV518 cameras */ +static struct ovcamchip_regvals regvals_init_6x20_518[] = { + { 0x12, 0x80 }, /* Do a reset */ + { 0x03, 0xc0 }, /* Saturation */ + { 0x05, 0x8a }, /* Contrast */ + { 0x0c, 0x24 }, /* AWB blue */ + { 0x0d, 0x24 }, /* AWB red */ + { 0x0e, 0x8d }, /* Additional 2x gain */ + { 0x0f, 0x25 }, /* Black expanding level = 1.3V */ + { 0x11, 0x01 }, /* Clock div. */ + { 0x12, 0x24 }, /* Enable AGC and AWB */ + { 0x13, 0x01 }, /* (default) */ + { 0x14, 0x80 }, /* Set reserved bit 7 */ + { 0x15, 0x01 }, /* (default) */ + { 0x16, 0x03 }, /* (default) */ + { 0x17, 0x38 }, /* (default) */ + { 0x18, 0xea }, /* (default) */ + { 0x19, 0x04 }, + { 0x1a, 0x93 }, + { 0x1b, 0x00 }, /* (default) */ + { 0x1e, 0xc4 }, /* (default) */ + { 0x1f, 0x04 }, /* (default) */ + { 0x20, 0x20 }, /* Enable 1st stage aperture correction */ + { 0x21, 0x10 }, /* Y offset */ + { 0x22, 0x88 }, /* U offset */ + { 0x23, 0xc0 }, /* Set XTAL power level */ + { 0x24, 0x53 }, /* AEC bright ratio */ + { 0x25, 0x7a }, /* AEC black ratio */ + { 0x26, 0xb2 }, /* BLC enable */ + { 0x27, 0xa2 }, /* Full output range */ + { 0x28, 0x01 }, /* (default) */ + { 0x29, 0x00 }, /* (default) */ + { 0x2a, 0x84 }, /* (default) */ + { 0x2b, 0xa8 }, /* Set custom frame rate */ + { 0x2c, 0xa0 }, /* (reserved) */ + { 0x2d, 0x95 }, /* Enable banding filter */ + { 0x2e, 0x88 }, /* V offset */ + { 0x33, 0x22 }, /* Luminance gamma on */ + { 0x34, 0xc7 }, /* A/D bias */ + { 0x36, 0x12 }, /* (reserved) */ + { 0x37, 0x63 }, /* (reserved) */ + { 0x38, 0x8b }, /* Quick AEC/AEB */ + { 0x39, 0x00 }, /* (default) */ + { 0x3a, 0x0f }, /* (default) */ + { 0x3b, 0x3c }, /* (default) */ + { 0x3c, 0x5c }, /* AEC controls */ + { 0x3d, 0x80 }, /* Drop 1 (bad) frame when AEC change */ + { 0x3e, 0x80 }, /* (default) */ + { 0x3f, 0x02 }, /* (default) */ + { 0x40, 0x10 }, /* (reserved) */ + { 0x41, 0x10 }, /* (reserved) */ + { 0x42, 0x00 }, /* (reserved) */ + { 0x43, 0x7f }, /* (reserved) */ + { 0x44, 0x80 }, /* (reserved) */ + { 0x45, 0x1c }, /* (reserved) */ + { 0x46, 0x1c }, /* (reserved) */ + { 0x47, 0x80 }, /* (reserved) */ + { 0x48, 0x5f }, /* (reserved) */ + { 0x49, 0x00 }, /* (reserved) */ + { 0x4a, 0x00 }, /* Color balance (undocumented) */ + { 0x4b, 0x80 }, /* Color balance (undocumented) */ + { 0x4c, 0x58 }, /* (reserved) */ + { 0x4d, 0xd2 }, /* U *= .938, V *= .838 */ + { 0x4e, 0xa0 }, /* (default) */ + { 0x4f, 0x04 }, /* UV 3-point average */ + { 0x50, 0xff }, /* (reserved) */ + { 0x51, 0x58 }, /* (reserved) */ + { 0x52, 0xc0 }, /* (reserved) */ + { 0x53, 0x42 }, /* (reserved) */ + { 0x27, 0xa6 }, /* Enable manual offset adj. (reg 21 & 22) */ + { 0x12, 0x20 }, + { 0x12, 0x24 }, + + { 0xff, 0xff }, /* END MARKER */ +}; + +/* This initializes the OV6x20 camera chip and relevant variables. */ +static int ov6x20_init(struct i2c_client *c) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + struct ov6x20 *s; + int rc; + + DDEBUG(4, &c->dev, "entered"); + + switch (c->adapter->id) { + case I2C_ALGO_SMBUS | I2C_HW_SMBUS_OV511: + rc = ov_write_regvals(c, regvals_init_6x20_511); + break; + case I2C_ALGO_SMBUS | I2C_HW_SMBUS_OV518: + rc = ov_write_regvals(c, regvals_init_6x20_518); + break; + default: + dev_err(&c->dev, "ov6x20: Unsupported adapter\n"); + rc = -ENODEV; + } + + if (rc < 0) + return rc; + + ov->spriv = s = kmalloc(sizeof *s, GFP_KERNEL); + if (!s) + return -ENOMEM; + memset(s, 0, sizeof *s); + + s->auto_brt = 1; + s->auto_exp = 1; + + return rc; +} + +static int ov6x20_free(struct i2c_client *c) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + + kfree(ov->spriv); + return 0; +} + +static int ov6x20_set_control(struct i2c_client *c, + struct ovcamchip_control *ctl) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + struct ov6x20 *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(c, 0x2b, sixty?0xa8:0x28); + if (rc < 0) + goto out; + + rc = ov_write(c, 0x2a, sixty?0x84:0xa4); + 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, 0x13, v?0x01:0x00, 0x01); + s->auto_exp = v; + break; + case OVCAMCHIP_CID_BACKLIGHT: + { + rc = ov_write_mask(c, 0x4e, v?0xe0:0xc0, 0xe0); + if (rc < 0) + goto out; + + rc = ov_write_mask(c, 0x29, v?0x08:0x00, 0x08); + if (rc < 0) + goto out; + + rc = ov_write_mask(c, 0x0e, v?0x80:0x00, 0x80); + s->backlight = 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 ov6x20_get_control(struct i2c_client *c, + struct ovcamchip_control *ctl) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + struct ov6x20 *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_BACKLIGHT: + ctl->value = s->backlight; + 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 ov6x20_mode_init(struct i2c_client *c, struct ovcamchip_window *win) +{ + /******** QCIF-specific regs ********/ + + ov_write(c, 0x14, win->quarter?0x24:0x04); + + /******** Palette-specific regs ********/ + + /* OV518 needs 8 bit multiplexed in color mode, and 16 bit in B&W */ + if (c->adapter->id == (I2C_ALGO_SMBUS | I2C_HW_SMBUS_OV518)) { + if (win->format == VIDEO_PALETTE_GREY) + ov_write_mask(c, 0x13, 0x00, 0x20); + else + ov_write_mask(c, 0x13, 0x20, 0x20); + } else { + if (win->format == VIDEO_PALETTE_GREY) + ov_write_mask(c, 0x13, 0x20, 0x20); + else + ov_write_mask(c, 0x13, 0x00, 0x20); + } + + /******** Clock programming ********/ + + /* The OV6620 needs special handling. This prevents the + * severe banding that normally occurs */ + + /* Clock down */ + ov_write(c, 0x2a, 0x04); + + ov_write(c, 0x11, win->clockdiv); + + ov_write(c, 0x2a, 0x84); + /* This next setting is critical. It seems to improve + * the gain or the contrast. The "reserved" bits seem + * to have some effect in this case. */ + ov_write(c, 0x2d, 0x85); /* FIXME: This messes up banding filter */ + + return 0; +} + +static int ov6x20_set_window(struct i2c_client *c, struct ovcamchip_window *win) +{ + int ret, hwscale, vwscale; + + ret = ov6x20_mode_init(c, win); + if (ret < 0) + return ret; + + if (win->quarter) { + hwscale = 0; + vwscale = 0; + } else { + hwscale = 1; + vwscale = 1; /* The datasheet says 0; it's wrong */ + } + + 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 ov6x20_command(struct i2c_client *c, unsigned int cmd, void *arg) +{ + switch (cmd) { + case OVCAMCHIP_CMD_S_CTRL: + return ov6x20_set_control(c, arg); + case OVCAMCHIP_CMD_G_CTRL: + return ov6x20_get_control(c, arg); + case OVCAMCHIP_CMD_S_MODE: + return ov6x20_set_window(c, arg); + default: + DDEBUG(2, &c->dev, "command not supported: %d", cmd); + return -ENOIOCTLCMD; + } +} + +struct ovcamchip_ops ov6x20_ops = { + .init = ov6x20_init, + .free = ov6x20_free, + .command = ov6x20_command, +}; diff --git a/drivers/media/video/ovcamchip/ov6x30.c b/drivers/media/video/ovcamchip/ov6x30.c new file mode 100644 index 00000000000..44a842379b4 --- /dev/null +++ b/drivers/media/video/ovcamchip/ov6x30.c @@ -0,0 +1,374 @@ +/* OmniVision OV6630/OV6130 Camera Chip Support Code + * + * Copyright (c) 1999-2004 Mark McClelland + * http://alpha.dyndns.org/ov511/ + * + * 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 +#include "ovcamchip_priv.h" + +/* Registers */ +#define REG_GAIN 0x00 /* gain [5:0] */ +#define REG_BLUE 0x01 /* blue gain */ +#define REG_RED 0x02 /* red gain */ +#define REG_SAT 0x03 /* saturation [7:3] */ +#define REG_CNT 0x05 /* Y contrast [3:0] */ +#define REG_BRT 0x06 /* Y brightness */ +#define REG_SHARP 0x07 /* sharpness */ +#define REG_WB_BLUE 0x0C /* WB blue ratio [5:0] */ +#define REG_WB_RED 0x0D /* WB red ratio [5:0] */ +#define REG_EXP 0x10 /* exposure */ + +/* Window parameters */ +#define HWSBASE 0x38 +#define HWEBASE 0x3A +#define VWSBASE 0x05 +#define VWEBASE 0x06 + +struct ov6x30 { + int auto_brt; + int auto_exp; + int backlight; + int bandfilt; + int mirror; +}; + +static struct ovcamchip_regvals regvals_init_6x30[] = { + { 0x12, 0x80 }, /* reset */ + { 0x00, 0x1f }, /* Gain */ + { 0x01, 0x99 }, /* Blue gain */ + { 0x02, 0x7c }, /* Red gain */ + { 0x03, 0xc0 }, /* Saturation */ + { 0x05, 0x0a }, /* Contrast */ + { 0x06, 0x95 }, /* Brightness */ + { 0x07, 0x2d }, /* Sharpness */ + { 0x0c, 0x20 }, + { 0x0d, 0x20 }, + { 0x0e, 0x20 }, + { 0x0f, 0x05 }, + { 0x10, 0x9a }, /* "exposure check" */ + { 0x11, 0x00 }, /* Pixel clock = fastest */ + { 0x12, 0x24 }, /* Enable AGC and AWB */ + { 0x13, 0x21 }, + { 0x14, 0x80 }, + { 0x15, 0x01 }, + { 0x16, 0x03 }, + { 0x17, 0x38 }, + { 0x18, 0xea }, + { 0x19, 0x04 }, + { 0x1a, 0x93 }, + { 0x1b, 0x00 }, + { 0x1e, 0xc4 }, + { 0x1f, 0x04 }, + { 0x20, 0x20 }, + { 0x21, 0x10 }, + { 0x22, 0x88 }, + { 0x23, 0xc0 }, /* Crystal circuit power level */ + { 0x25, 0x9a }, /* Increase AEC black pixel ratio */ + { 0x26, 0xb2 }, /* BLC enable */ + { 0x27, 0xa2 }, + { 0x28, 0x00 }, + { 0x29, 0x00 }, + { 0x2a, 0x84 }, /* (keep) */ + { 0x2b, 0xa8 }, /* (keep) */ + { 0x2c, 0xa0 }, + { 0x2d, 0x95 }, /* Enable auto-brightness */ + { 0x2e, 0x88 }, + { 0x33, 0x26 }, + { 0x34, 0x03 }, + { 0x36, 0x8f }, + { 0x37, 0x80 }, + { 0x38, 0x83 }, + { 0x39, 0x80 }, + { 0x3a, 0x0f }, + { 0x3b, 0x3c }, + { 0x3c, 0x1a }, + { 0x3d, 0x80 }, + { 0x3e, 0x80 }, + { 0x3f, 0x0e }, + { 0x40, 0x00 }, /* White bal */ + { 0x41, 0x00 }, /* White bal */ + { 0x42, 0x80 }, + { 0x43, 0x3f }, /* White bal */ + { 0x44, 0x80 }, + { 0x45, 0x20 }, + { 0x46, 0x20 }, + { 0x47, 0x80 }, + { 0x48, 0x7f }, + { 0x49, 0x00 }, + { 0x4a, 0x00 }, + { 0x4b, 0x80 }, + { 0x4c, 0xd0 }, + { 0x4d, 0x10 }, /* U = 0.563u, V = 0.714v */ + { 0x4e, 0x40 }, + { 0x4f, 0x07 }, /* UV average mode, color killer: strongest */ + { 0x50, 0xff }, + { 0x54, 0x23 }, /* Max AGC gain: 18dB */ + { 0x55, 0xff }, + { 0x56, 0x12 }, + { 0x57, 0x81 }, /* (default) */ + { 0x58, 0x75 }, + { 0x59, 0x01 }, /* AGC dark current compensation: +1 */ + { 0x5a, 0x2c }, + { 0x5b, 0x0f }, /* AWB chrominance levels */ + { 0x5c, 0x10 }, + { 0x3d, 0x80 }, + { 0x27, 0xa6 }, + /* Toggle AWB off and on */ + { 0x12, 0x20 }, + { 0x12, 0x24 }, + + { 0xff, 0xff }, /* END MARKER */ +}; + +/* This initializes the OV6x30 camera chip and relevant variables. */ +static int ov6x30_init(struct i2c_client *c) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + struct ov6x30 *s; + int rc; + + DDEBUG(4, &c->dev, "entered"); + + rc = ov_write_regvals(c, regvals_init_6x30); + if (rc < 0) + return rc; + + ov->spriv = s = kmalloc(sizeof *s, GFP_KERNEL); + if (!s) + return -ENOMEM; + memset(s, 0, sizeof *s); + + s->auto_brt = 1; + s->auto_exp = 1; + + return rc; +} + +static int ov6x30_free(struct i2c_client *c) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + + kfree(ov->spriv); + return 0; +} + +static int ov6x30_set_control(struct i2c_client *c, + struct ovcamchip_control *ctl) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + struct ov6x30 *s = ov->spriv; + int rc; + int v = ctl->value; + + switch (ctl->id) { + case OVCAMCHIP_CID_CONT: + rc = ov_write_mask(c, REG_CNT, v >> 12, 0x0f); + 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(c, 0x2b, sixty?0xa8:0x28); + if (rc < 0) + goto out; + + rc = ov_write(c, 0x2a, sixty?0x84:0xa4); + 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, 0x28, v?0x00:0x10, 0x10); + s->auto_exp = v; + break; + case OVCAMCHIP_CID_BACKLIGHT: + { + rc = ov_write_mask(c, 0x4e, v?0x80:0x60, 0xe0); + if (rc < 0) + goto out; + + rc = ov_write_mask(c, 0x29, v?0x08:0x00, 0x08); + if (rc < 0) + goto out; + + rc = ov_write_mask(c, 0x28, v?0x02:0x00, 0x02); + s->backlight = 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 ov6x30_get_control(struct i2c_client *c, + struct ovcamchip_control *ctl) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + struct ov6x30 *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 & 0x0f) << 12; + 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_BACKLIGHT: + ctl->value = s->backlight; + 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 ov6x30_mode_init(struct i2c_client *c, struct ovcamchip_window *win) +{ + /******** QCIF-specific regs ********/ + + ov_write_mask(c, 0x14, win->quarter?0x20:0x00, 0x20); + + /******** Palette-specific regs ********/ + + if (win->format == VIDEO_PALETTE_GREY) { + if (c->adapter->id == (I2C_ALGO_SMBUS | I2C_HW_SMBUS_OV518)) { + /* Do nothing - we're already in 8-bit mode */ + } else { + ov_write_mask(c, 0x13, 0x20, 0x20); + } + } else { + /* The OV518 needs special treatment. Although both the OV518 + * and the OV6630 support a 16-bit video bus, only the 8 bit Y + * bus is actually used. The UV bus is tied to ground. + * Therefore, the OV6630 needs to be in 8-bit multiplexed + * output mode */ + + if (c->adapter->id == (I2C_ALGO_SMBUS | I2C_HW_SMBUS_OV518)) { + /* Do nothing - we want to stay in 8-bit mode */ + /* Warning: Messing with reg 0x13 breaks OV518 color */ + } else { + ov_write_mask(c, 0x13, 0x00, 0x20); + } + } + + /******** Clock programming ********/ + + ov_write(c, 0x11, win->clockdiv); + + return 0; +} + +static int ov6x30_set_window(struct i2c_client *c, struct ovcamchip_window *win) +{ + int ret, hwscale, vwscale; + + ret = ov6x30_mode_init(c, win); + if (ret < 0) + return ret; + + if (win->quarter) { + hwscale = 0; + vwscale = 0; + } else { + hwscale = 1; + vwscale = 1; /* The datasheet says 0; it's wrong */ + } + + 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 ov6x30_command(struct i2c_client *c, unsigned int cmd, void *arg) +{ + switch (cmd) { + case OVCAMCHIP_CMD_S_CTRL: + return ov6x30_set_control(c, arg); + case OVCAMCHIP_CMD_G_CTRL: + return ov6x30_get_control(c, arg); + case OVCAMCHIP_CMD_S_MODE: + return ov6x30_set_window(c, arg); + default: + DDEBUG(2, &c->dev, "command not supported: %d", cmd); + return -ENOIOCTLCMD; + } +} + +struct ovcamchip_ops ov6x30_ops = { + .init = ov6x30_init, + .free = ov6x30_free, + .command = ov6x30_command, +}; diff --git a/drivers/media/video/ovcamchip/ov76be.c b/drivers/media/video/ovcamchip/ov76be.c new file mode 100644 index 00000000000..29bbdc05e3b --- /dev/null +++ b/drivers/media/video/ovcamchip/ov76be.c @@ -0,0 +1,303 @@ +/* OmniVision OV76BE Camera Chip Support Code + * + * Copyright (c) 1999-2004 Mark McClelland + * http://alpha.dyndns.org/ov511/ + * + * 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 +#include "ovcamchip_priv.h" + +/* OV7610 registers: Since the OV76BE is undocumented, we'll settle for these + * for now. */ +#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 ov76be { + int auto_brt; + int auto_exp; + int bandfilt; + int mirror; +}; + +/* NOTE: These are the same as the 7x10 settings, but should eventually be + * optimized for the OV76BE */ +static struct ovcamchip_regvals regvals_init_76be[] = { + { 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 OV76be camera chip and relevant variables. */ +static int ov76be_init(struct i2c_client *c) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + struct ov76be *s; + int rc; + + DDEBUG(4, &c->dev, "entered"); + + rc = ov_write_regvals(c, regvals_init_76be); + if (rc < 0) + return rc; + + ov->spriv = s = kmalloc(sizeof *s, GFP_KERNEL); + if (!s) + return -ENOMEM; + memset(s, 0, sizeof *s); + + s->auto_brt = 1; + s->auto_exp = 1; + + return rc; +} + +static int ov76be_free(struct i2c_client *c) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + + kfree(ov->spriv); + return 0; +} + +static int ov76be_set_control(struct i2c_client *c, + struct ovcamchip_control *ctl) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + struct ov76be *s = ov->spriv; + int rc; + int v = ctl->value; + + switch (ctl->id) { + 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_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, 0x76, 0x01, 0x01); + 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, 0x13, v?0x01:0x00, 0x01); + 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 ov76be_get_control(struct i2c_client *c, + struct ovcamchip_control *ctl) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + struct ov76be *s = ov->spriv; + int rc = 0; + unsigned char val = 0; + + switch (ctl->id) { + 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_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 ov76be_mode_init(struct i2c_client *c, struct ovcamchip_window *win) +{ + int qvga = win->quarter; + + /******** QVGA-specific regs ********/ + + ov_write(c, 0x14, qvga?0xa4:0x84); + + /******** 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 ov76be_set_window(struct i2c_client *c, struct ovcamchip_window *win) +{ + int ret, hwscale, vwscale; + + ret = ov76be_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 ov76be_command(struct i2c_client *c, unsigned int cmd, void *arg) +{ + switch (cmd) { + case OVCAMCHIP_CMD_S_CTRL: + return ov76be_set_control(c, arg); + case OVCAMCHIP_CMD_G_CTRL: + return ov76be_get_control(c, arg); + case OVCAMCHIP_CMD_S_MODE: + return ov76be_set_window(c, arg); + default: + DDEBUG(2, &c->dev, "command not supported: %d", cmd); + return -ENOIOCTLCMD; + } +} + +struct ovcamchip_ops ov76be_ops = { + .init = ov76be_init, + .free = ov76be_free, + .command = ov76be_command, +}; diff --git a/drivers/media/video/ovcamchip/ov7x10.c b/drivers/media/video/ovcamchip/ov7x10.c new file mode 100644 index 00000000000..6c383d4b14f --- /dev/null +++ b/drivers/media/video/ovcamchip/ov7x10.c @@ -0,0 +1,335 @@ +/* OmniVision OV7610/OV7110 Camera Chip Support Code + * + * Copyright (c) 1999-2004 Mark McClelland + * http://alpha.dyndns.org/ov511/ + * + * Color fixes by by Orion Sky Lawlor (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 +#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 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 = kmalloc(sizeof *s, GFP_KERNEL); + if (!s) + return -ENOMEM; + memset(s, 0, sizeof *s); + + 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, +}; diff --git a/drivers/media/video/ovcamchip/ov7x20.c b/drivers/media/video/ovcamchip/ov7x20.c new file mode 100644 index 00000000000..3c8c48f338b --- /dev/null +++ b/drivers/media/video/ovcamchip/ov7x20.c @@ -0,0 +1,455 @@ +/* OmniVision OV7620/OV7120 Camera Chip Support Code + * + * Copyright (c) 1999-2004 Mark McClelland + * http://alpha.dyndns.org/ov511/ + * + * OV7620 fixes by Charl P. Botha + * + * 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 +#include "ovcamchip_priv.h" + +/* Registers */ +#define REG_GAIN 0x00 /* gain [5:0] */ +#define REG_BLUE 0x01 /* blue gain */ +#define REG_RED 0x02 /* red gain */ +#define REG_SAT 0x03 /* saturation */ +#define REG_BRT 0x06 /* Y brightness */ +#define REG_SHARP 0x07 /* analog sharpness */ +#define REG_BLUE_BIAS 0x0C /* WB blue ratio [5:0] */ +#define REG_RED_BIAS 0x0D /* WB red ratio [5:0] */ +#define REG_EXP 0x10 /* exposure */ + +/* Default control settings. Values are in terms of V4L2 controls. */ +#define OV7120_DFL_BRIGHT 0x60 +#define OV7620_DFL_BRIGHT 0x60 +#define OV7120_DFL_SAT 0xb0 +#define OV7620_DFL_SAT 0xc0 +#define DFL_AUTO_EXP 1 +#define DFL_AUTO_GAIN 1 +#define OV7120_DFL_GAIN 0x00 +#define OV7620_DFL_GAIN 0x00 +/* NOTE: Since autoexposure is the default, these aren't programmed into the + * OV7x20 chip. They are just here because V4L2 expects a default */ +#define OV7120_DFL_EXP 0x7f +#define OV7620_DFL_EXP 0x7f + +/* Window parameters */ +#define HWSBASE 0x2F /* From 7620.SET (spec is wrong) */ +#define HWEBASE 0x2F +#define VWSBASE 0x05 +#define VWEBASE 0x05 + +struct ov7x20 { + int auto_brt; + int auto_exp; + int auto_gain; + int backlight; + int bandfilt; + int mirror; +}; + +/* Contrast look-up table */ +static unsigned char ctab[] = { + 0x01, 0x05, 0x09, 0x11, 0x15, 0x35, 0x37, 0x57, + 0x5b, 0xa5, 0xa7, 0xc7, 0xc9, 0xcf, 0xef, 0xff +}; + +/* Settings for (Black & White) OV7120 camera chip */ +static struct ovcamchip_regvals regvals_init_7120[] = { + { 0x12, 0x80 }, /* reset */ + { 0x13, 0x00 }, /* Autoadjust off */ + { 0x12, 0x20 }, /* Disable AWB */ + { 0x13, DFL_AUTO_GAIN?0x01:0x00 }, /* Autoadjust on (if desired) */ + { 0x00, OV7120_DFL_GAIN }, + { 0x01, 0x80 }, + { 0x02, 0x80 }, + { 0x03, OV7120_DFL_SAT }, + { 0x06, OV7120_DFL_BRIGHT }, + { 0x07, 0x00 }, + { 0x0c, 0x20 }, + { 0x0d, 0x20 }, + { 0x11, 0x01 }, + { 0x14, 0x84 }, + { 0x15, 0x01 }, + { 0x16, 0x03 }, + { 0x17, 0x2f }, + { 0x18, 0xcf }, + { 0x19, 0x06 }, + { 0x1a, 0xf5 }, + { 0x1b, 0x00 }, + { 0x20, 0x08 }, + { 0x21, 0x80 }, + { 0x22, 0x80 }, + { 0x23, 0x00 }, + { 0x26, 0xa0 }, + { 0x27, 0xfa }, + { 0x28, 0x20 }, /* DON'T set bit 6. It is for the OV7620 only */ + { 0x29, DFL_AUTO_EXP?0x00:0x80 }, + { 0x2a, 0x10 }, + { 0x2b, 0x00 }, + { 0x2c, 0x88 }, + { 0x2d, 0x95 }, + { 0x2e, 0x80 }, + { 0x2f, 0x44 }, + { 0x60, 0x20 }, + { 0x61, 0x02 }, + { 0x62, 0x5f }, + { 0x63, 0xd5 }, + { 0x64, 0x57 }, + { 0x65, 0x83 }, /* OV says "don't change this value" */ + { 0x66, 0x55 }, + { 0x67, 0x92 }, + { 0x68, 0xcf }, + { 0x69, 0x76 }, + { 0x6a, 0x22 }, + { 0x6b, 0xe2 }, + { 0x6c, 0x40 }, + { 0x6d, 0x48 }, + { 0x6e, 0x80 }, + { 0x6f, 0x0d }, + { 0x70, 0x89 }, + { 0x71, 0x00 }, + { 0x72, 0x14 }, + { 0x73, 0x54 }, + { 0x74, 0xa0 }, + { 0x75, 0x8e }, + { 0x76, 0x00 }, + { 0x77, 0xff }, + { 0x78, 0x80 }, + { 0x79, 0x80 }, + { 0x7a, 0x80 }, + { 0x7b, 0xe6 }, + { 0x7c, 0x00 }, + { 0x24, 0x3a }, + { 0x25, 0x60 }, + { 0xff, 0xff }, /* END MARKER */ +}; + +/* Settings for (color) OV7620 camera chip */ +static struct ovcamchip_regvals regvals_init_7620[] = { + { 0x12, 0x80 }, /* reset */ + { 0x00, OV7620_DFL_GAIN }, + { 0x01, 0x80 }, + { 0x02, 0x80 }, + { 0x03, OV7620_DFL_SAT }, + { 0x06, OV7620_DFL_BRIGHT }, + { 0x07, 0x00 }, + { 0x0c, 0x24 }, + { 0x0c, 0x24 }, + { 0x0d, 0x24 }, + { 0x11, 0x01 }, + { 0x12, 0x24 }, + { 0x13, DFL_AUTO_GAIN?0x01:0x00 }, + { 0x14, 0x84 }, + { 0x15, 0x01 }, + { 0x16, 0x03 }, + { 0x17, 0x2f }, + { 0x18, 0xcf }, + { 0x19, 0x06 }, + { 0x1a, 0xf5 }, + { 0x1b, 0x00 }, + { 0x20, 0x18 }, + { 0x21, 0x80 }, + { 0x22, 0x80 }, + { 0x23, 0x00 }, + { 0x26, 0xa2 }, + { 0x27, 0xea }, + { 0x28, 0x20 }, + { 0x29, DFL_AUTO_EXP?0x00:0x80 }, + { 0x2a, 0x10 }, + { 0x2b, 0x00 }, + { 0x2c, 0x88 }, + { 0x2d, 0x91 }, + { 0x2e, 0x80 }, + { 0x2f, 0x44 }, + { 0x60, 0x27 }, + { 0x61, 0x02 }, + { 0x62, 0x5f }, + { 0x63, 0xd5 }, + { 0x64, 0x57 }, + { 0x65, 0x83 }, + { 0x66, 0x55 }, + { 0x67, 0x92 }, + { 0x68, 0xcf }, + { 0x69, 0x76 }, + { 0x6a, 0x22 }, + { 0x6b, 0x00 }, + { 0x6c, 0x02 }, + { 0x6d, 0x44 }, + { 0x6e, 0x80 }, + { 0x6f, 0x1d }, + { 0x70, 0x8b }, + { 0x71, 0x00 }, + { 0x72, 0x14 }, + { 0x73, 0x54 }, + { 0x74, 0x00 }, + { 0x75, 0x8e }, + { 0x76, 0x00 }, + { 0x77, 0xff }, + { 0x78, 0x80 }, + { 0x79, 0x80 }, + { 0x7a, 0x80 }, + { 0x7b, 0xe2 }, + { 0x7c, 0x00 }, + { 0xff, 0xff }, /* END MARKER */ +}; + +/* Returns index into the specified look-up table, with 'n' elements, for which + * the value is greater than or equal to "val". If a match isn't found, (n-1) + * is returned. The entries in the table must be in ascending order. */ +static inline int ov7x20_lut_find(unsigned char lut[], int n, unsigned char val) +{ + int i = 0; + + while (lut[i] < val && i < n) + i++; + + return i; +} + +/* This initializes the OV7x20 camera chip and relevant variables. */ +static int ov7x20_init(struct i2c_client *c) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + struct ov7x20 *s; + int rc; + + DDEBUG(4, &c->dev, "entered"); + + if (ov->mono) + rc = ov_write_regvals(c, regvals_init_7120); + else + rc = ov_write_regvals(c, regvals_init_7620); + + if (rc < 0) + return rc; + + ov->spriv = s = kmalloc(sizeof *s, GFP_KERNEL); + if (!s) + return -ENOMEM; + memset(s, 0, sizeof *s); + + s->auto_brt = 1; + s->auto_exp = DFL_AUTO_EXP; + s->auto_gain = DFL_AUTO_GAIN; + + return 0; +} + +static int ov7x20_free(struct i2c_client *c) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + + kfree(ov->spriv); + return 0; +} + +static int ov7x20_set_v4l1_control(struct i2c_client *c, + struct ovcamchip_control *ctl) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + struct ov7x20 *s = ov->spriv; + int rc; + int v = ctl->value; + + switch (ctl->id) { + case OVCAMCHIP_CID_CONT: + { + /* Use Y gamma control instead. Bit 0 enables it. */ + rc = ov_write(c, 0x64, ctab[v >> 12]); + break; + } + case OVCAMCHIP_CID_BRIGHT: + /* 7620 doesn't like manual changes when in auto mode */ + if (!s->auto_brt) + rc = ov_write(c, REG_BRT, v >> 8); + else + rc = 0; + break; + case OVCAMCHIP_CID_SAT: + rc = ov_write(c, REG_SAT, v >> 8); + break; + case OVCAMCHIP_CID_EXP: + if (!s->auto_exp) + rc = ov_write(c, REG_EXP, v); + else + rc = -EBUSY; + 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, 0x76, 0x01, 0x01); + 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, 0x13, v?0x01:0x00, 0x01); + s->auto_exp = v; + break; + case OVCAMCHIP_CID_BACKLIGHT: + { + rc = ov_write_mask(c, 0x68, v?0xe0:0xc0, 0xe0); + if (rc < 0) + goto out; + + rc = ov_write_mask(c, 0x29, v?0x08:0x00, 0x08); + if (rc < 0) + goto out; + + rc = ov_write_mask(c, 0x28, v?0x02:0x00, 0x02); + s->backlight = 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 ov7x20_get_v4l1_control(struct i2c_client *c, + struct ovcamchip_control *ctl) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + struct ov7x20 *s = ov->spriv; + int rc = 0; + unsigned char val = 0; + + switch (ctl->id) { + case OVCAMCHIP_CID_CONT: + rc = ov_read(c, 0x64, &val); + ctl->value = ov7x20_lut_find(ctab, 16, val) << 12; + 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_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_BACKLIGHT: + ctl->value = s->backlight; + 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 ov7x20_mode_init(struct i2c_client *c, struct ovcamchip_window *win) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + int qvga = win->quarter; + + /******** QVGA-specific regs ********/ + ov_write_mask(c, 0x14, qvga?0x20:0x00, 0x20); + ov_write_mask(c, 0x28, qvga?0x00:0x20, 0x20); + ov_write(c, 0x24, qvga?0x20:0x3a); + ov_write(c, 0x25, qvga?0x30:0x60); + ov_write_mask(c, 0x2d, qvga?0x40:0x00, 0x40); + if (!ov->mono) + ov_write_mask(c, 0x67, qvga?0xf0:0x90, 0xf0); + ov_write_mask(c, 0x74, qvga?0x20:0x00, 0x20); + + /******** Clock programming ********/ + + ov_write(c, 0x11, win->clockdiv); + + return 0; +} + +static int ov7x20_set_window(struct i2c_client *c, struct ovcamchip_window *win) +{ + int ret, hwscale, vwscale; + + ret = ov7x20_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 ov7x20_command(struct i2c_client *c, unsigned int cmd, void *arg) +{ + switch (cmd) { + case OVCAMCHIP_CMD_S_CTRL: + return ov7x20_set_v4l1_control(c, arg); + case OVCAMCHIP_CMD_G_CTRL: + return ov7x20_get_v4l1_control(c, arg); + case OVCAMCHIP_CMD_S_MODE: + return ov7x20_set_window(c, arg); + default: + DDEBUG(2, &c->dev, "command not supported: %d", cmd); + return -ENOIOCTLCMD; + } +} + +struct ovcamchip_ops ov7x20_ops = { + .init = ov7x20_init, + .free = ov7x20_free, + .command = ov7x20_command, +}; diff --git a/drivers/media/video/ovcamchip/ovcamchip_core.c b/drivers/media/video/ovcamchip/ovcamchip_core.c new file mode 100644 index 00000000000..54dd5612d3b --- /dev/null +++ b/drivers/media/video/ovcamchip/ovcamchip_core.c @@ -0,0 +1,444 @@ +/* Shared Code for OmniVision Camera Chip Drivers + * + * Copyright (c) 2004 Mark McClelland + * http://alpha.dyndns.org/ov511/ + * + * 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 +#include +#include +#include +#include +#include "ovcamchip_priv.h" + +#define DRIVER_VERSION "v2.27 for Linux 2.6" +#define DRIVER_AUTHOR "Mark McClelland " +#define DRIVER_DESC "OV camera chip I2C driver" + +#define PINFO(fmt, args...) printk(KERN_INFO "ovcamchip: " fmt "\n" , ## args); +#define PERROR(fmt, args...) printk(KERN_ERR "ovcamchip: " fmt "\n" , ## args); + +#ifdef DEBUG +int ovcamchip_debug = 0; +static int debug; +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, + "Debug level: 0=none, 1=inits, 2=warning, 3=config, 4=functions, 5=all"); +#endif + +/* By default, let bridge driver tell us if chip is monochrome. mono=0 + * will ignore that and always treat chips as color. mono=1 will force + * monochrome mode for all chips. */ +static int mono = -1; +module_param(mono, int, 0); +MODULE_PARM_DESC(mono, + "1=chips are monochrome (OVx1xx), 0=force color, -1=autodetect (default)"); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +/* Registers common to all chips, that are needed for detection */ +#define GENERIC_REG_ID_HIGH 0x1C /* manufacturer ID MSB */ +#define GENERIC_REG_ID_LOW 0x1D /* manufacturer ID LSB */ +#define GENERIC_REG_COM_I 0x29 /* misc ID bits */ + +extern struct ovcamchip_ops ov6x20_ops; +extern struct ovcamchip_ops ov6x30_ops; +extern struct ovcamchip_ops ov7x10_ops; +extern struct ovcamchip_ops ov7x20_ops; +extern struct ovcamchip_ops ov76be_ops; + +static char *chip_names[NUM_CC_TYPES] = { + [CC_UNKNOWN] = "Unknown chip", + [CC_OV76BE] = "OV76BE", + [CC_OV7610] = "OV7610", + [CC_OV7620] = "OV7620", + [CC_OV7620AE] = "OV7620AE", + [CC_OV6620] = "OV6620", + [CC_OV6630] = "OV6630", + [CC_OV6630AE] = "OV6630AE", + [CC_OV6630AF] = "OV6630AF", +}; + +/* Forward declarations */ +static struct i2c_driver driver; +static struct i2c_client client_template; + +/* ----------------------------------------------------------------------- */ + +int ov_write_regvals(struct i2c_client *c, struct ovcamchip_regvals *rvals) +{ + int rc; + + while (rvals->reg != 0xff) { + rc = ov_write(c, rvals->reg, rvals->val); + if (rc < 0) + return rc; + rvals++; + } + + return 0; +} + +/* Writes bits at positions specified by mask to an I2C reg. Bits that are in + * the same position as 1's in "mask" are cleared and set to "value". Bits + * that are in the same position as 0's in "mask" are preserved, regardless + * of their respective state in "value". + */ +int ov_write_mask(struct i2c_client *c, + unsigned char reg, + unsigned char value, + unsigned char mask) +{ + int rc; + unsigned char oldval, newval; + + if (mask == 0xff) { + newval = value; + } else { + rc = ov_read(c, reg, &oldval); + if (rc < 0) + return rc; + + oldval &= (~mask); /* Clear the masked bits */ + value &= mask; /* Enforce mask on value */ + newval = oldval | value; /* Set the desired bits */ + } + + return ov_write(c, reg, newval); +} + +/* ----------------------------------------------------------------------- */ + +/* Reset the chip and ensure that I2C is synchronized. Returns <0 if failure. + */ +static int init_camchip(struct i2c_client *c) +{ + int i, success; + unsigned char high, low; + + /* Reset the chip */ + ov_write(c, 0x12, 0x80); + + /* Wait for it to initialize */ + msleep(150); + + for (i = 0, success = 0; i < I2C_DETECT_RETRIES && !success; i++) { + if (ov_read(c, GENERIC_REG_ID_HIGH, &high) >= 0) { + if (ov_read(c, GENERIC_REG_ID_LOW, &low) >= 0) { + if (high == 0x7F && low == 0xA2) { + success = 1; + continue; + } + } + } + + /* Reset the chip */ + ov_write(c, 0x12, 0x80); + + /* Wait for it to initialize */ + msleep(150); + + /* Dummy read to sync I2C */ + ov_read(c, 0x00, &low); + } + + if (!success) + return -EIO; + + PDEBUG(1, "I2C synced in %d attempt(s)", i); + + return 0; +} + +/* This detects the OV7610, OV7620, or OV76BE chip. */ +static int ov7xx0_detect(struct i2c_client *c) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + int rc; + unsigned char val; + + PDEBUG(4, ""); + + /* Detect chip (sub)type */ + rc = ov_read(c, GENERIC_REG_COM_I, &val); + if (rc < 0) { + PERROR("Error detecting ov7xx0 type"); + return rc; + } + + if ((val & 3) == 3) { + PINFO("Camera chip is an OV7610"); + ov->subtype = CC_OV7610; + } else if ((val & 3) == 1) { + rc = ov_read(c, 0x15, &val); + if (rc < 0) { + PERROR("Error detecting ov7xx0 type"); + return rc; + } + + if (val & 1) { + PINFO("Camera chip is an OV7620AE"); + /* OV7620 is a close enough match for now. There are + * some definite differences though, so this should be + * fixed */ + ov->subtype = CC_OV7620; + } else { + PINFO("Camera chip is an OV76BE"); + ov->subtype = CC_OV76BE; + } + } else if ((val & 3) == 0) { + PINFO("Camera chip is an OV7620"); + ov->subtype = CC_OV7620; + } else { + PERROR("Unknown camera chip version: %d", val & 3); + return -ENOSYS; + } + + if (ov->subtype == CC_OV76BE) + ov->sops = &ov76be_ops; + else if (ov->subtype == CC_OV7620) + ov->sops = &ov7x20_ops; + else + ov->sops = &ov7x10_ops; + + return 0; +} + +/* This detects the OV6620, OV6630, OV6630AE, or OV6630AF chip. */ +static int ov6xx0_detect(struct i2c_client *c) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + int rc; + unsigned char val; + + PDEBUG(4, ""); + + /* Detect chip (sub)type */ + rc = ov_read(c, GENERIC_REG_COM_I, &val); + if (rc < 0) { + PERROR("Error detecting ov6xx0 type"); + return -1; + } + + if ((val & 3) == 0) { + ov->subtype = CC_OV6630; + PINFO("Camera chip is an OV6630"); + } else if ((val & 3) == 1) { + ov->subtype = CC_OV6620; + PINFO("Camera chip is an OV6620"); + } else if ((val & 3) == 2) { + ov->subtype = CC_OV6630; + PINFO("Camera chip is an OV6630AE"); + } else if ((val & 3) == 3) { + ov->subtype = CC_OV6630; + PINFO("Camera chip is an OV6630AF"); + } + + if (ov->subtype == CC_OV6620) + ov->sops = &ov6x20_ops; + else + ov->sops = &ov6x30_ops; + + return 0; +} + +static int ovcamchip_detect(struct i2c_client *c) +{ + /* Ideally we would just try a single register write and see if it NAKs. + * That isn't possible since the OV518 can't report I2C transaction + * failures. So, we have to try to initialize the chip (i.e. reset it + * and check the ID registers) to detect its presence. */ + + /* Test for 7xx0 */ + PDEBUG(3, "Testing for 0V7xx0"); + c->addr = OV7xx0_SID; + if (init_camchip(c) < 0) { + /* Test for 6xx0 */ + PDEBUG(3, "Testing for 0V6xx0"); + c->addr = OV6xx0_SID; + if (init_camchip(c) < 0) { + return -ENODEV; + } else { + if (ov6xx0_detect(c) < 0) { + PERROR("Failed to init OV6xx0"); + return -EIO; + } + } + } else { + if (ov7xx0_detect(c) < 0) { + PERROR("Failed to init OV7xx0"); + return -EIO; + } + } + + return 0; +} + +/* ----------------------------------------------------------------------- */ + +static int ovcamchip_attach(struct i2c_adapter *adap) +{ + int rc = 0; + struct ovcamchip *ov; + struct i2c_client *c; + + /* I2C is not a PnP bus, so we can never be certain that we're talking + * to the right chip. To prevent damage to EEPROMS and such, only + * attach to adapters that are known to contain OV camera chips. */ + + switch (adap->id) { + case (I2C_ALGO_SMBUS | I2C_HW_SMBUS_OV511): + case (I2C_ALGO_SMBUS | I2C_HW_SMBUS_OV518): + case (I2C_ALGO_SMBUS | I2C_HW_SMBUS_OVFX2): + case (I2C_ALGO_SMBUS | I2C_HW_SMBUS_W9968CF): + PDEBUG(1, "Adapter ID 0x%06x accepted", adap->id); + break; + default: + PDEBUG(1, "Adapter ID 0x%06x rejected", adap->id); + return -ENODEV; + } + + c = kmalloc(sizeof *c, GFP_KERNEL); + if (!c) { + rc = -ENOMEM; + goto no_client; + } + memcpy(c, &client_template, sizeof *c); + c->adapter = adap; + strcpy(i2c_clientname(c), "OV????"); + + ov = kmalloc(sizeof *ov, GFP_KERNEL); + if (!ov) { + rc = -ENOMEM; + goto no_ov; + } + memset(ov, 0, sizeof *ov); + i2c_set_clientdata(c, ov); + + rc = ovcamchip_detect(c); + if (rc < 0) + goto error; + + strcpy(i2c_clientname(c), chip_names[ov->subtype]); + + PDEBUG(1, "Camera chip detection complete"); + + i2c_attach_client(c); + + return rc; +error: + kfree(ov); +no_ov: + kfree(c); +no_client: + PDEBUG(1, "returning %d", rc); + return rc; +} + +static int ovcamchip_detach(struct i2c_client *c) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + int rc; + + rc = ov->sops->free(c); + if (rc < 0) + return rc; + + i2c_detach_client(c); + + kfree(ov); + kfree(c); + return 0; +} + +static int ovcamchip_command(struct i2c_client *c, unsigned int cmd, void *arg) +{ + struct ovcamchip *ov = i2c_get_clientdata(c); + + if (!ov->initialized && + cmd != OVCAMCHIP_CMD_Q_SUBTYPE && + cmd != OVCAMCHIP_CMD_INITIALIZE) { + dev_err(&c->dev, "ERROR: Camera chip not initialized yet!\n"); + return -EPERM; + } + + switch (cmd) { + case OVCAMCHIP_CMD_Q_SUBTYPE: + { + *(int *)arg = ov->subtype; + return 0; + } + case OVCAMCHIP_CMD_INITIALIZE: + { + int rc; + + if (mono == -1) + ov->mono = *(int *)arg; + else + ov->mono = mono; + + if (ov->mono) { + if (ov->subtype != CC_OV7620) + dev_warn(&c->dev, "Warning: Monochrome not " + "implemented for this chip\n"); + else + dev_info(&c->dev, "Initializing chip as " + "monochrome\n"); + } + + rc = ov->sops->init(c); + if (rc < 0) + return rc; + + ov->initialized = 1; + return 0; + } + default: + return ov->sops->command(c, cmd, arg); + } +} + +/* ----------------------------------------------------------------------- */ + +static struct i2c_driver driver = { + .owner = THIS_MODULE, + .name = "ovcamchip", + .id = I2C_DRIVERID_OVCAMCHIP, + .class = I2C_CLASS_CAM_DIGITAL, + .flags = I2C_DF_NOTIFY, + .attach_adapter = ovcamchip_attach, + .detach_client = ovcamchip_detach, + .command = ovcamchip_command, +}; + +static struct i2c_client client_template = { + I2C_DEVNAME("(unset)"), + .driver = &driver, +}; + +static int __init ovcamchip_init(void) +{ +#ifdef DEBUG + ovcamchip_debug = debug; +#endif + + PINFO(DRIVER_VERSION " : " DRIVER_DESC); + return i2c_add_driver(&driver); +} + +static void __exit ovcamchip_exit(void) +{ + i2c_del_driver(&driver); +} + +module_init(ovcamchip_init); +module_exit(ovcamchip_exit); diff --git a/drivers/media/video/ovcamchip/ovcamchip_priv.h b/drivers/media/video/ovcamchip/ovcamchip_priv.h new file mode 100644 index 00000000000..575e612a554 --- /dev/null +++ b/drivers/media/video/ovcamchip/ovcamchip_priv.h @@ -0,0 +1,87 @@ +/* OmniVision* camera chip driver private definitions for core code and + * chip-specific code + * + * Copyright (c) 1999-2004 Mark McClelland + * + * 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. + * + * * OmniVision is a trademark of OmniVision Technologies, Inc. This driver + * is not sponsored or developed by them. + */ + +#ifndef __LINUX_OVCAMCHIP_PRIV_H +#define __LINUX_OVCAMCHIP_PRIV_H + +#include + +#ifdef DEBUG +extern int ovcamchip_debug; +#endif + +#define PDEBUG(level, fmt, args...) \ + if (ovcamchip_debug >= (level)) pr_debug("[%s:%d] " fmt "\n", \ + __FUNCTION__, __LINE__ , ## args) + +#define DDEBUG(level, dev, fmt, args...) \ + if (ovcamchip_debug >= (level)) dev_dbg(dev, "[%s:%d] " fmt "\n", \ + __FUNCTION__, __LINE__ , ## args) + +/* Number of times to retry chip detection. Increase this if you are getting + * "Failed to init camera chip" */ +#define I2C_DETECT_RETRIES 10 + +struct ovcamchip_regvals { + unsigned char reg; + unsigned char val; +}; + +struct ovcamchip_ops { + int (*init)(struct i2c_client *); + int (*free)(struct i2c_client *); + int (*command)(struct i2c_client *, unsigned int, void *); +}; + +struct ovcamchip { + struct ovcamchip_ops *sops; + void *spriv; /* Private data for OV7x10.c etc... */ + int subtype; /* = SEN_OV7610 etc... */ + int mono; /* Monochrome chip? (invalid until init) */ + int initialized; /* OVCAMCHIP_CMD_INITIALIZE was successful */ +}; + +/* --------------------------------- */ +/* I2C I/O */ +/* --------------------------------- */ + +static inline int ov_read(struct i2c_client *c, unsigned char reg, + unsigned char *value) +{ + int rc; + + rc = i2c_smbus_read_byte_data(c, reg); + *value = (unsigned char) rc; + return rc; +} + +static inline int ov_write(struct i2c_client *c, unsigned char reg, + unsigned char value ) +{ + return i2c_smbus_write_byte_data(c, reg, value); +} + +/* --------------------------------- */ +/* FUNCTION PROTOTYPES */ +/* --------------------------------- */ + +/* Functions in ovcamchip_core.c */ + +extern int ov_write_regvals(struct i2c_client *c, + struct ovcamchip_regvals *rvals); + +extern int ov_write_mask(struct i2c_client *c, unsigned char reg, + unsigned char value, unsigned char mask); + +#endif -- cgit v1.2.3