1 files changed, 374 insertions, 0 deletions
diff --git a/drivers/media/video/ovcamchip/ov6x30.c b/drivers/media/video/ovcamchip/ov6x30.c
new file mode 100644
index 000000000000..44a842379b45
--- /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 <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 [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,
+};