1 files changed, 362 insertions, 0 deletions
diff --git a/drivers/staging/go7007/wis-tw9903.c b/drivers/staging/go7007/wis-tw9903.c
new file mode 100644
index 000000000000..d8e41968022e
--- /dev/null
+++ b/drivers/staging/go7007/wis-tw9903.c
@@ -0,0 +1,362 @@
+/*
+ * Copyright (C) 2005-2006 Micronas USA Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/version.h>
+#include <linux/i2c.h>
+#include <linux/videodev2.h>
+#include <linux/ioctl.h>
+
+#include "wis-i2c.h"
+
+struct wis_tw9903 {
+	int norm;
+	int brightness;
+	int contrast;
+	int hue;
+};
+
+static u8 initial_registers[] =
+{
+	0x02, 0x44, /* input 1, composite */
+	0x03, 0x92, /* correct digital format */
+	0x04, 0x00,
+	0x05, 0x80, /* or 0x00 for PAL */
+	0x06, 0x40, /* second internal current reference */
+	0x07, 0x02, /* window */
+	0x08, 0x14, /* window */
+	0x09, 0xf0, /* window */
+	0x0a, 0x81, /* window */
+	0x0b, 0xd0, /* window */
+	0x0c, 0x8c,
+	0x0d, 0x00, /* scaling */
+	0x0e, 0x11, /* scaling */
+	0x0f, 0x00, /* scaling */
+	0x10, 0x00, /* brightness */
+	0x11, 0x60, /* contrast */
+	0x12, 0x01, /* sharpness */
+	0x13, 0x7f, /* U gain */
+	0x14, 0x5a, /* V gain */
+	0x15, 0x00, /* hue */
+	0x16, 0xc3, /* sharpness */
+	0x18, 0x00,
+	0x19, 0x58, /* vbi */
+	0x1a, 0x80,
+	0x1c, 0x0f, /* video norm */
+	0x1d, 0x7f, /* video norm */
+	0x20, 0xa0, /* clamping gain (working 0x50) */
+	0x21, 0x22,
+	0x22, 0xf0,
+	0x23, 0xfe,
+	0x24, 0x3c,
+	0x25, 0x38,
+	0x26, 0x44,
+	0x27, 0x20,
+	0x28, 0x00,
+	0x29, 0x15,
+	0x2a, 0xa0,
+	0x2b, 0x44,
+	0x2c, 0x37,
+	0x2d, 0x00,
+	0x2e, 0xa5, /* burst PLL control (working: a9) */
+	0x2f, 0xe0, /* 0xea is blue test frame -- 0xe0 for normal */
+	0x31, 0x00,
+	0x33, 0x22,
+	0x34, 0x11,
+	0x35, 0x35,
+	0x3b, 0x05,
+	0x06, 0xc0, /* reset device */
+	0x00, 0x00, /* Terminator (reg 0x00 is read-only) */
+};
+
+static int write_reg(struct i2c_client *client, u8 reg, u8 value)
+{
+	return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static int write_regs(struct i2c_client *client, u8 *regs)
+{
+	int i;
+
+	for (i = 0; regs[i] != 0x00; i += 2)
+		if (i2c_smbus_write_byte_data(client, regs[i], regs[i + 1]) < 0)
+			return -1;
+	return 0;
+}
+
+static int wis_tw9903_command(struct i2c_client *client,
+				unsigned int cmd, void *arg)
+{
+	struct wis_tw9903 *dec = i2c_get_clientdata(client);
+
+	switch (cmd) {
+	case VIDIOC_S_INPUT:
+	{
+		int *input = arg;
+
+		i2c_smbus_write_byte_data(client, 0x02, 0x40 | (*input << 1));
+		break;
+	}
+#if 0   /* The scaler on this thing seems to be horribly broken */
+	case DECODER_SET_RESOLUTION:
+	{
+		struct video_decoder_resolution *res = arg;
+		/*int hscale = 256 * 720 / res->width;*/
+		int hscale = 256 * 720 / (res->width - (res->width > 704 ? 0 : 8));
+		int vscale = 256 * (dec->norm & V4L2_STD_NTSC ?  240 : 288)
+				/ res->height;
+		u8 regs[] = {
+			0x0d, vscale & 0xff,
+			0x0f, hscale & 0xff,
+			0x0e, ((vscale & 0xf00) >> 4) | ((hscale & 0xf00) >> 8),
+			0x06, 0xc0, /* reset device */
+			0,	0,
+		};
+		printk(KERN_DEBUG "vscale is %04x, hscale is %04x\n",
+				vscale, hscale);
+		/*write_regs(client, regs);*/
+		break;
+	}
+#endif
+	case VIDIOC_S_STD:
+	{
+		v4l2_std_id *input = arg;
+		u8 regs[] = {
+			0x05, *input & V4L2_STD_NTSC ? 0x80 : 0x00,
+			0x07, *input & V4L2_STD_NTSC ? 0x02 : 0x12,
+			0x08, *input & V4L2_STD_NTSC ? 0x14 : 0x18,
+			0x09, *input & V4L2_STD_NTSC ? 0xf0 : 0x20,
+			0,	0,
+		};
+		write_regs(client, regs);
+		dec->norm = *input;
+		break;
+	}
+	case VIDIOC_QUERYCTRL:
+	{
+		struct v4l2_queryctrl *ctrl = arg;
+
+		switch (ctrl->id) {
+		case V4L2_CID_BRIGHTNESS:
+			ctrl->type = V4L2_CTRL_TYPE_INTEGER;
+			strncpy(ctrl->name, "Brightness", sizeof(ctrl->name));
+			ctrl->minimum = -128;
+			ctrl->maximum = 127;
+			ctrl->step = 1;
+			ctrl->default_value = 0x00;
+			ctrl->flags = 0;
+			break;
+		case V4L2_CID_CONTRAST:
+			ctrl->type = V4L2_CTRL_TYPE_INTEGER;
+			strncpy(ctrl->name, "Contrast", sizeof(ctrl->name));
+			ctrl->minimum = 0;
+			ctrl->maximum = 255;
+			ctrl->step = 1;
+			ctrl->default_value = 0x60;
+			ctrl->flags = 0;
+			break;
+#if 0
+		/* I don't understand how the Chroma Gain registers work... */
+		case V4L2_CID_SATURATION:
+			ctrl->type = V4L2_CTRL_TYPE_INTEGER;
+			strncpy(ctrl->name, "Saturation", sizeof(ctrl->name));
+			ctrl->minimum = 0;
+			ctrl->maximum = 127;
+			ctrl->step = 1;
+			ctrl->default_value = 64;
+			ctrl->flags = 0;
+			break;
+#endif
+		case V4L2_CID_HUE:
+			ctrl->type = V4L2_CTRL_TYPE_INTEGER;
+			strncpy(ctrl->name, "Hue", sizeof(ctrl->name));
+			ctrl->minimum = -128;
+			ctrl->maximum = 127;
+			ctrl->step = 1;
+			ctrl->default_value = 0;
+			ctrl->flags = 0;
+			break;
+		}
+		break;
+	}
+	case VIDIOC_S_CTRL:
+	{
+		struct v4l2_control *ctrl = arg;
+
+		switch (ctrl->id) {
+		case V4L2_CID_BRIGHTNESS:
+			if (ctrl->value > 127)
+				dec->brightness = 127;
+			else if (ctrl->value < -128)
+				dec->brightness = -128;
+			else
+				dec->brightness = ctrl->value;
+			write_reg(client, 0x10, dec->brightness);
+			break;
+		case V4L2_CID_CONTRAST:
+			if (ctrl->value > 255)
+				dec->contrast = 255;
+			else if (ctrl->value < 0)
+				dec->contrast = 0;
+			else
+				dec->contrast = ctrl->value;
+			write_reg(client, 0x11, dec->contrast);
+			break;
+#if 0
+		case V4L2_CID_SATURATION:
+			if (ctrl->value > 127)
+				dec->saturation = 127;
+			else if (ctrl->value < 0)
+				dec->saturation = 0;
+			else
+				dec->saturation = ctrl->value;
+			/*write_reg(client, 0x0c, dec->saturation);*/
+			break;
+#endif
+		case V4L2_CID_HUE:
+			if (ctrl->value > 127)
+				dec->hue = 127;
+			else if (ctrl->value < -128)
+				dec->hue = -128;
+			else
+				dec->hue = ctrl->value;
+			write_reg(client, 0x15, dec->hue);
+			break;
+		}
+		break;
+	}
+	case VIDIOC_G_CTRL:
+	{
+		struct v4l2_control *ctrl = arg;
+
+		switch (ctrl->id) {
+		case V4L2_CID_BRIGHTNESS:
+			ctrl->value = dec->brightness;
+			break;
+		case V4L2_CID_CONTRAST:
+			ctrl->value = dec->contrast;
+			break;
+#if 0
+		case V4L2_CID_SATURATION:
+			ctrl->value = dec->saturation;
+			break;
+#endif
+		case V4L2_CID_HUE:
+			ctrl->value = dec->hue;
+			break;
+		}
+		break;
+	}
+	default:
+		break;
+	}
+	return 0;
+}
+
+static struct i2c_driver wis_tw9903_driver;
+
+static struct i2c_client wis_tw9903_client_templ = {
+	.name		= "TW9903 (WIS)",
+	.driver		= &wis_tw9903_driver,
+};
+
+static int wis_tw9903_detect(struct i2c_adapter *adapter, int addr, int kind)
+{
+	struct i2c_client *client;
+	struct wis_tw9903 *dec;
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+		return 0;
+
+	client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+	if (client == NULL)
+		return -ENOMEM;
+	memcpy(client, &wis_tw9903_client_templ,
+			sizeof(wis_tw9903_client_templ));
+	client->adapter = adapter;
+	client->addr = addr;
+
+	dec = kmalloc(sizeof(struct wis_tw9903), GFP_KERNEL);
+	if (dec == NULL) {
+		kfree(client);
+		return -ENOMEM;
+	}
+	dec->norm = V4L2_STD_NTSC;
+	dec->brightness = 0;
+	dec->contrast = 0x60;
+	dec->hue = 0;
+	i2c_set_clientdata(client, dec);
+
+	printk(KERN_DEBUG
+		"wis-tw9903: initializing TW9903 at address %d on %s\n",
+		addr, adapter->name);
+
+	if (write_regs(client, initial_registers) < 0) {
+		printk(KERN_ERR "wis-tw9903: error initializing TW9903\n");
+		kfree(client);
+		kfree(dec);
+		return 0;
+	}
+
+	i2c_attach_client(client);
+	return 0;
+}
+
+static int wis_tw9903_detach(struct i2c_client *client)
+{
+	struct wis_tw9903 *dec = i2c_get_clientdata(client);
+	int r;
+
+	r = i2c_detach_client(client);
+	if (r < 0)
+		return r;
+
+	kfree(client);
+	kfree(dec);
+	return 0;
+}
+
+static struct i2c_driver wis_tw9903_driver = {
+	.driver = {
+		.name	= "WIS TW9903 I2C driver",
+	},
+	.id		= I2C_DRIVERID_WIS_TW9903,
+	.detach_client	= wis_tw9903_detach,
+	.command	= wis_tw9903_command,
+};
+
+static int __init wis_tw9903_init(void)
+{
+	int r;
+
+	r = i2c_add_driver(&wis_tw9903_driver);
+	if (r < 0)
+		return r;
+	return wis_i2c_add_driver(wis_tw9903_driver.id, wis_tw9903_detect);
+}
+
+static void __exit wis_tw9903_cleanup(void)
+{
+	wis_i2c_del_driver(wis_tw9903_detect);
+	i2c_del_driver(&wis_tw9903_driver);
+}
+
+module_init(wis_tw9903_init);
+module_exit(wis_tw9903_cleanup);
+
+MODULE_LICENSE("GPL v2");