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!

1 files changed, 415 insertions, 0 deletions

diff --git a/drivers/media/video/ovcamchip/ov6x20.c b/drivers/media/video/ovcamchip/ov6x20.c
new file mode 100644
index 000000000000..3433619ad93f
--- /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 <mark@alpha.dyndns.org>
+ * 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 <linux/slab.h>
+#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,
+};