1 files changed, 380 insertions, 0 deletions
diff --git a/drivers/staging/go7007/wis-tw2804.c b/drivers/staging/go7007/wis-tw2804.c
new file mode 100644
index 00000000000..27fe4d0d4ed
--- /dev/null
+++ b/drivers/staging/go7007/wis-tw2804.c
@@ -0,0 +1,380 @@
+/*
+ * 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_tw2804 {
+	int channel;
+	int norm;
+	int brightness;
+	int contrast;
+	int saturation;
+	int hue;
+};
+
+static u8 global_registers[] =
+{
+	0x39, 0x00,
+	0x3a, 0xff,
+	0x3b, 0x84,
+	0x3c, 0x80,
+	0x3d, 0x80,
+	0x3e, 0x82,
+	0x3f, 0x82,
+	0xff, 0xff, /* Terminator (reg 0xff does not exist) */
+};
+
+static u8 channel_registers[] =
+{
+	0x01, 0xc4,
+	0x02, 0xa5,
+	0x03, 0x20,
+	0x04, 0xd0,
+	0x05, 0x20,
+	0x06, 0xd0,
+	0x07, 0x88,
+	0x08, 0x20,
+	0x09, 0x07,
+	0x0a, 0xf0,
+	0x0b, 0x07,
+	0x0c, 0xf0,
+	0x0d, 0x40,
+	0x0e, 0xd2,
+	0x0f, 0x80,
+	0x10, 0x80,
+	0x11, 0x80,
+	0x12, 0x80,
+	0x13, 0x1f,
+	0x14, 0x00,
+	0x15, 0x00,
+	0x16, 0x00,
+	0x17, 0x00,
+	0x18, 0xff,
+	0x19, 0xff,
+	0x1a, 0xff,
+	0x1b, 0xff,
+	0x1c, 0xff,
+	0x1d, 0xff,
+	0x1e, 0xff,
+	0x1f, 0xff,
+	0x20, 0x07,
+	0x21, 0x07,
+	0x22, 0x00,
+	0x23, 0x91,
+	0x24, 0x51,
+	0x25, 0x03,
+	0x26, 0x00,
+	0x27, 0x00,
+	0x28, 0x00,
+	0x29, 0x00,
+	0x2a, 0x00,
+	0x2b, 0x00,
+	0x2c, 0x00,
+	0x2d, 0x00,
+	0x2e, 0x00,
+	0x2f, 0x00,
+	0x30, 0x00,
+	0x31, 0x00,
+	0x32, 0x00,
+	0x33, 0x00,
+	0x34, 0x00,
+	0x35, 0x00,
+	0x36, 0x00,
+	0x37, 0x00,
+	0xff, 0xff, /* Terminator (reg 0xff does not exist) */
+};
+
+static int write_reg(struct i2c_client *client, u8 reg, u8 value, int channel)
+{
+	return i2c_smbus_write_byte_data(client, reg | (channel << 6), value);
+}
+
+static int write_regs(struct i2c_client *client, u8 *regs, int channel)
+{
+	int i;
+
+	for (i = 0; regs[i] != 0xff; i += 2)
+		if (i2c_smbus_write_byte_data(client,
+				regs[i] | (channel << 6), regs[i + 1]) < 0)
+			return -1;
+	return 0;
+}
+
+static int wis_tw2804_command(struct i2c_client *client,
+				unsigned int cmd, void *arg)
+{
+	struct wis_tw2804 *dec = i2c_get_clientdata(client);
+
+	if (cmd == DECODER_SET_CHANNEL) {
+		int *input = arg;
+
+		if (*input < 0 || *input > 3) {
+			printk(KERN_ERR "wis-tw2804: channel %d is not "
+					"between 0 and 3!\n", *input);
+			return 0;
+		}
+		dec->channel = *input;
+		printk(KERN_DEBUG "wis-tw2804: initializing TW2804 "
+				"channel %d\n", dec->channel);
+		if (dec->channel == 0 &&
+				write_regs(client, global_registers, 0) < 0) {
+			printk(KERN_ERR "wis-tw2804: error initializing "
+					"TW2804 global registers\n");
+			return 0;
+		}
+		if (write_regs(client, channel_registers, dec->channel) < 0) {
+			printk(KERN_ERR "wis-tw2804: error initializing "
+					"TW2804 channel %d\n", dec->channel);
+			return 0;
+		}
+		return 0;
+	}
+
+	if (dec->channel < 0) {
+		printk(KERN_DEBUG "wis-tw2804: ignoring command %08x until "
+				"channel number is set\n", cmd);
+		return 0;
+	}
+
+	switch (cmd) {
+	case VIDIOC_S_STD:
+	{
+		v4l2_std_id *input = arg;
+		u8 regs[] = {
+			0x01, *input & V4L2_STD_NTSC ? 0xc4 : 0x84,
+			0x09, *input & V4L2_STD_NTSC ? 0x07 : 0x04,
+			0x0a, *input & V4L2_STD_NTSC ? 0xf0 : 0x20,
+			0x0b, *input & V4L2_STD_NTSC ? 0x07 : 0x04,
+			0x0c, *input & V4L2_STD_NTSC ? 0xf0 : 0x20,
+			0x0d, *input & V4L2_STD_NTSC ? 0x40 : 0x4a,
+			0x16, *input & V4L2_STD_NTSC ? 0x00 : 0x40,
+			0x17, *input & V4L2_STD_NTSC ? 0x00 : 0x40,
+			0x20, *input & V4L2_STD_NTSC ? 0x07 : 0x0f,
+			0x21, *input & V4L2_STD_NTSC ? 0x07 : 0x0f,
+			0xff,	0xff,
+		};
+		write_regs(client, regs, dec->channel);
+		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 = 0;
+			ctrl->maximum = 255;
+			ctrl->step = 1;
+			ctrl->default_value = 128;
+			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 = 128;
+			ctrl->flags = 0;
+			break;
+		case V4L2_CID_SATURATION:
+			ctrl->type = V4L2_CTRL_TYPE_INTEGER;
+			strncpy(ctrl->name, "Saturation", sizeof(ctrl->name));
+			ctrl->minimum = 0;
+			ctrl->maximum = 255;
+			ctrl->step = 1;
+			ctrl->default_value = 128;
+			ctrl->flags = 0;
+			break;
+		case V4L2_CID_HUE:
+			ctrl->type = V4L2_CTRL_TYPE_INTEGER;
+			strncpy(ctrl->name, "Hue", sizeof(ctrl->name));
+			ctrl->minimum = 0;
+			ctrl->maximum = 255;
+			ctrl->step = 1;
+			ctrl->default_value = 128;
+			ctrl->flags = 0;
+			break;
+		}
+		break;
+	}
+	case VIDIOC_S_CTRL:
+	{
+		struct v4l2_control *ctrl = arg;
+
+		switch (ctrl->id) {
+		case V4L2_CID_BRIGHTNESS:
+			if (ctrl->value > 255)
+				dec->brightness = 255;
+			else if (ctrl->value < 0)
+				dec->brightness = 0;
+			else
+				dec->brightness = ctrl->value;
+			write_reg(client, 0x12, dec->brightness, dec->channel);
+			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, dec->channel);
+			break;
+		case V4L2_CID_SATURATION:
+			if (ctrl->value > 255)
+				dec->saturation = 255;
+			else if (ctrl->value < 0)
+				dec->saturation = 0;
+			else
+				dec->saturation = ctrl->value;
+			write_reg(client, 0x10, dec->saturation, dec->channel);
+			break;
+		case V4L2_CID_HUE:
+			if (ctrl->value > 255)
+				dec->hue = 255;
+			else if (ctrl->value < 0)
+				dec->hue = 0;
+			else
+				dec->hue = ctrl->value;
+			write_reg(client, 0x0f, dec->hue, dec->channel);
+			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;
+		case V4L2_CID_SATURATION:
+			ctrl->value = dec->saturation;
+			break;
+		case V4L2_CID_HUE:
+			ctrl->value = dec->hue;
+			break;
+		}
+		break;
+	}
+	default:
+		break;
+	}
+	return 0;
+}
+
+static struct i2c_driver wis_tw2804_driver;
+
+static struct i2c_client wis_tw2804_client_templ = {
+	.name		= "TW2804 (WIS)",
+	.driver		= &wis_tw2804_driver,
+};
+
+static int wis_tw2804_detect(struct i2c_adapter *adapter, int addr, int kind)
+{
+	struct i2c_client *client;
+	struct wis_tw2804 *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_tw2804_client_templ,
+			sizeof(wis_tw2804_client_templ));
+	client->adapter = adapter;
+	client->addr = addr;
+
+	dec = kmalloc(sizeof(struct wis_tw2804), GFP_KERNEL);
+	if (dec == NULL) {
+		kfree(client);
+		return -ENOMEM;
+	}
+	dec->channel = -1;
+	dec->norm = V4L2_STD_NTSC;
+	dec->brightness = 128;
+	dec->contrast = 128;
+	dec->saturation = 128;
+	dec->hue = 128;
+	i2c_set_clientdata(client, dec);
+
+	printk(KERN_DEBUG "wis-tw2804: creating TW2804 at address %d on %s\n",
+		addr, adapter->name);
+
+	i2c_attach_client(client);
+	return 0;
+}
+
+static int wis_tw2804_detach(struct i2c_client *client)
+{
+	struct wis_tw2804 *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_tw2804_driver = {
+	.driver = {
+		.name	= "WIS TW2804 I2C driver",
+	},
+	.id		= I2C_DRIVERID_WIS_TW2804,
+	.detach_client	= wis_tw2804_detach,
+	.command	= wis_tw2804_command,
+};
+
+static int __init wis_tw2804_init(void)
+{
+	int r;
+
+	r = i2c_add_driver(&wis_tw2804_driver);
+	if (r < 0)
+		return r;
+	return wis_i2c_add_driver(wis_tw2804_driver.id, wis_tw2804_detect);
+}
+
+static void __exit wis_tw2804_cleanup(void)
+{
+	wis_i2c_del_driver(wis_tw2804_detect);
+	i2c_del_driver(&wis_tw2804_driver);
+}
+
+module_init(wis_tw2804_init);
+module_exit(wis_tw2804_cleanup);
+
+MODULE_LICENSE("GPL v2");