[net-next-2.6.git] / drivers / staging / go7007 / wis-tw9903.c

/*
 * 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/i2c.h>
#include <linux/videodev2.h>
#include <linux/ioctl.h>
#include <linux/slab.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 int wis_tw9903_probe(struct i2c_client *client,
			    const struct i2c_device_id *id)
{
	struct i2c_adapter *adapter = client->adapter;
	struct wis_tw9903 *dec;

	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return -ENODEV;

	dec = kmalloc(sizeof(struct wis_tw9903), GFP_KERNEL);
	if (dec == NULL)
		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",
		client->addr, adapter->name);

	if (write_regs(client, initial_registers) < 0) {
		printk(KERN_ERR "wis-tw9903: error initializing TW9903\n");
		i2c_set_clientdata(client, NULL);
		kfree(dec);
		return -ENODEV;
	}

	return 0;
}

static int wis_tw9903_remove(struct i2c_client *client)
{
	struct wis_tw9903 *dec = i2c_get_clientdata(client);

	i2c_set_clientdata(client, NULL);
	kfree(dec);
	return 0;
}

static const struct i2c_device_id wis_tw9903_id[] = {
	{ "wis_tw9903", 0 },
	{ }
};

static struct i2c_driver wis_tw9903_driver = {
	.driver = {
		.name	= "WIS TW9903 I2C driver",
	},
	.probe		= wis_tw9903_probe,
	.remove		= wis_tw9903_remove,
	.command	= wis_tw9903_command,
	.id_table	= wis_tw9903_id,
};

static int __init wis_tw9903_init(void)
{
	return i2c_add_driver(&wis_tw9903_driver);
}

static void __exit wis_tw9903_cleanup(void)
{
	i2c_del_driver(&wis_tw9903_driver);
}

module_init(wis_tw9903_init);
module_exit(wis_tw9903_cleanup);

MODULE_LICENSE("GPL v2");
Commit	Line	Data
866b8695 GKH	1	/*
	2	* Copyright (C) 2005-2006 Micronas USA Inc.
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License (Version 2) as
	6	* published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License
	14	* along with this program; if not, write to the Free Software Foundation,
	15	* Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
	16	*/
	17
	18	#include <linux/module.h>
	19	#include <linux/init.h>
866b8695	20	#include <linux/i2c.h>
df20d69e	21	#include <linux/videodev2.h>
866b8695	22	#include <linux/ioctl.h>
5a0e3ad6	23	#include <linux/slab.h>
866b8695 GKH	24
	25	#include "wis-i2c.h"
	26
	27	struct wis_tw9903 {
	28	int norm;
	29	int brightness;
	30	int contrast;
	31	int hue;
	32	};
	33
	34	static u8 initial_registers[] =
	35	{
	36	0x02, 0x44, /* input 1, composite */
	37	0x03, 0x92, /* correct digital format */
	38	0x04, 0x00,
	39	0x05, 0x80, /* or 0x00 for PAL */
	40	0x06, 0x40, /* second internal current reference */
	41	0x07, 0x02, /* window */
	42	0x08, 0x14, /* window */
	43	0x09, 0xf0, /* window */
	44	0x0a, 0x81, /* window */
	45	0x0b, 0xd0, /* window */
	46	0x0c, 0x8c,
	47	0x0d, 0x00, /* scaling */
	48	0x0e, 0x11, /* scaling */
	49	0x0f, 0x00, /* scaling */
	50	0x10, 0x00, /* brightness */
	51	0x11, 0x60, /* contrast */
	52	0x12, 0x01, /* sharpness */
	53	0x13, 0x7f, /* U gain */
	54	0x14, 0x5a, /* V gain */
	55	0x15, 0x00, /* hue */
	56	0x16, 0xc3, /* sharpness */
	57	0x18, 0x00,
	58	0x19, 0x58, /* vbi */
	59	0x1a, 0x80,
	60	0x1c, 0x0f, /* video norm */
	61	0x1d, 0x7f, /* video norm */
	62	0x20, 0xa0, /* clamping gain (working 0x50) */
	63	0x21, 0x22,
	64	0x22, 0xf0,
	65	0x23, 0xfe,
	66	0x24, 0x3c,
	67	0x25, 0x38,
	68	0x26, 0x44,
	69	0x27, 0x20,
	70	0x28, 0x00,
	71	0x29, 0x15,
	72	0x2a, 0xa0,
	73	0x2b, 0x44,
	74	0x2c, 0x37,
	75	0x2d, 0x00,
	76	0x2e, 0xa5, /* burst PLL control (working: a9) */
	77	0x2f, 0xe0, /* 0xea is blue test frame -- 0xe0 for normal */
	78	0x31, 0x00,
	79	0x33, 0x22,
	80	0x34, 0x11,
	81	0x35, 0x35,
	82	0x3b, 0x05,
	83	0x06, 0xc0, /* reset device */
	84	0x00, 0x00, /* Terminator (reg 0x00 is read-only) */
	85	};
	86
	87	static int write_reg(struct i2c_client *client, u8 reg, u8 value)
88	{
89	return i2c_smbus_write_byte_data(client, reg, value);
90	}
91
92	static int write_regs(struct i2c_client client, u8 regs)
93	{
94	int i;
95
96	for (i = 0; regs[i] != 0x00; i += 2)
97	if (i2c_smbus_write_byte_data(client, regs[i], regs[i + 1]) < 0)
98	return -1;
99	return 0;
100	}
101
102	static int wis_tw9903_command(struct i2c_client *client,
103	unsigned int cmd, void *arg)
104	{
105	struct wis_tw9903 *dec = i2c_get_clientdata(client);
106
107	switch (cmd) {
df20d69e	108	case VIDIOC_S_INPUT:
866b8695 GKH	109	{
	110	int *input = arg;
	111
	112	i2c_smbus_write_byte_data(client, 0x02, 0x40 \| (*input << 1));
	113	break;
	114	}
028d4c98 MCC	115	#if 0
028d4c98 MCC	116	/* The scaler on this thing seems to be horribly broken */
866b8695 GKH	117	case DECODER_SET_RESOLUTION:
	118	{
	119	struct video_decoder_resolution *res = arg;
	120	/int hscale = 256 720 / res->width;*/
	121	int hscale = 256 * 720 / (res->width - (res->width > 704 ? 0 : 8));
df20d69e	122	int vscale = 256 * (dec->norm & V4L2_STD_NTSC ? 240 : 288)
866b8695 GKH	123	/ res->height;
	124	u8 regs[] = {
	125	0x0d, vscale & 0xff,
	126	0x0f, hscale & 0xff,
	127	0x0e, ((vscale & 0xf00) >> 4) \| ((hscale & 0xf00) >> 8),
	128	0x06, 0xc0, /* reset device */
	129	0, 0,
	130	};
	131	printk(KERN_DEBUG "vscale is %04x, hscale is %04x\n",
	132	vscale, hscale);
	133	/write_regs(client, regs);/
	134	break;
	135	}
	136	#endif
df20d69e	137	case VIDIOC_S_STD:
866b8695	138	{
df20d69e	139	v4l2_std_id *input = arg;
866b8695	140	u8 regs[] = {
df20d69e RC	141	0x05, *input & V4L2_STD_NTSC ? 0x80 : 0x00,
	142	0x07, *input & V4L2_STD_NTSC ? 0x02 : 0x12,
	143	0x08, *input & V4L2_STD_NTSC ? 0x14 : 0x18,
	144	0x09, *input & V4L2_STD_NTSC ? 0xf0 : 0x20,
866b8695 GKH	145	0, 0,
	146	};
	147	write_regs(client, regs);
	148	dec->norm = *input;
	149	break;
	150	}
	151	case VIDIOC_QUERYCTRL:
	152	{
	153	struct v4l2_queryctrl *ctrl = arg;
	154
	155	switch (ctrl->id) {
	156	case V4L2_CID_BRIGHTNESS:
	157	ctrl->type = V4L2_CTRL_TYPE_INTEGER;
	158	strncpy(ctrl->name, "Brightness", sizeof(ctrl->name));
	159	ctrl->minimum = -128;
	160	ctrl->maximum = 127;
	161	ctrl->step = 1;
	162	ctrl->default_value = 0x00;
	163	ctrl->flags = 0;
	164	break;
	165	case V4L2_CID_CONTRAST:
	166	ctrl->type = V4L2_CTRL_TYPE_INTEGER;
	167	strncpy(ctrl->name, "Contrast", sizeof(ctrl->name));
	168	ctrl->minimum = 0;
	169	ctrl->maximum = 255;
	170	ctrl->step = 1;
	171	ctrl->default_value = 0x60;
	172	ctrl->flags = 0;
	173	break;
	174	#if 0
	175	/* I don't understand how the Chroma Gain registers work... */
	176	case V4L2_CID_SATURATION:
	177	ctrl->type = V4L2_CTRL_TYPE_INTEGER;
	178	strncpy(ctrl->name, "Saturation", sizeof(ctrl->name));
	179	ctrl->minimum = 0;
	180	ctrl->maximum = 127;
	181	ctrl->step = 1;
	182	ctrl->default_value = 64;
	183	ctrl->flags = 0;
	184	break;
	185	#endif
	186	case V4L2_CID_HUE:
	187	ctrl->type = V4L2_CTRL_TYPE_INTEGER;
	188	strncpy(ctrl->name, "Hue", sizeof(ctrl->name));
	189	ctrl->minimum = -128;
	190	ctrl->maximum = 127;
	191	ctrl->step = 1;
	192	ctrl->default_value = 0;
	193	ctrl->flags = 0;
	194	break;
	195	}
	196	break;
	197	}
	198	case VIDIOC_S_CTRL:
	199	{
	200	struct v4l2_control *ctrl = arg;
	201
	202	switch (ctrl->id) {
	203	case V4L2_CID_BRIGHTNESS:
	204	if (ctrl->value > 127)
	205	dec->brightness = 127;
	206	else if (ctrl->value < -128)
	207	dec->brightness = -128;
	208	else
209	dec->brightness = ctrl->value;
210	write_reg(client, 0x10, dec->brightness);
211	break;
212	case V4L2_CID_CONTRAST:
213	if (ctrl->value > 255)
214	dec->contrast = 255;
215	else if (ctrl->value < 0)
216	dec->contrast = 0;
217	else
218	dec->contrast = ctrl->value;
219	write_reg(client, 0x11, dec->contrast);
220	break;
221	#if 0
222	case V4L2_CID_SATURATION:
223	if (ctrl->value > 127)
224	dec->saturation = 127;
225	else if (ctrl->value < 0)
226	dec->saturation = 0;
227	else
228	dec->saturation = ctrl->value;
229	/write_reg(client, 0x0c, dec->saturation);/
230	break;
231	#endif
232	case V4L2_CID_HUE:
233	if (ctrl->value > 127)
234	dec->hue = 127;
235	else if (ctrl->value < -128)
236	dec->hue = -128;
237	else
238	dec->hue = ctrl->value;
239	write_reg(client, 0x15, dec->hue);
240	break;
241	}
242	break;
243	}
244	case VIDIOC_G_CTRL:
245	{
246	struct v4l2_control *ctrl = arg;
247
248	switch (ctrl->id) {
249	case V4L2_CID_BRIGHTNESS:
250	ctrl->value = dec->brightness;
251	break;
252	case V4L2_CID_CONTRAST:
253	ctrl->value = dec->contrast;
254	break;
255	#if 0
256	case V4L2_CID_SATURATION:
257	ctrl->value = dec->saturation;
258	break;
259	#endif
260	case V4L2_CID_HUE:
261	ctrl->value = dec->hue;
262	break;
263	}
264	break;
265	}
266	default:
267	break;
268	}
269	return 0;
270	}
271
7400516a JD	272	static int wis_tw9903_probe(struct i2c_client *client,
7400516a JD	273	const struct i2c_device_id *id)
866b8695	274	{
7400516a	275	struct i2c_adapter *adapter = client->adapter;
866b8695 GKH	276	struct wis_tw9903 *dec;
	277
	278	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
7400516a	279	return -ENODEV;
866b8695 GKH	280
866b8695 GKH	281	dec = kmalloc(sizeof(struct wis_tw9903), GFP_KERNEL);
7400516a	282	if (dec == NULL)
866b8695	283	return -ENOMEM;
7400516a	284
df20d69e	285	dec->norm = V4L2_STD_NTSC;
866b8695 GKH	286	dec->brightness = 0;
	287	dec->contrast = 0x60;
	288	dec->hue = 0;
	289	i2c_set_clientdata(client, dec);
	290
	291	printk(KERN_DEBUG
	292	"wis-tw9903: initializing TW9903 at address %d on %s\n",
7400516a	293	client->addr, adapter->name);
866b8695 GKH	294
	295	if (write_regs(client, initial_registers) < 0) {
	296	printk(KERN_ERR "wis-tw9903: error initializing TW9903\n");
665752e5	297	i2c_set_clientdata(client, NULL);
866b8695	298	kfree(dec);
7400516a	299	return -ENODEV;
866b8695 GKH	300	}
866b8695 GKH	301
866b8695 GKH	302	return 0;
	303	}
	304
7400516a	305	static int wis_tw9903_remove(struct i2c_client *client)
866b8695 GKH	306	{
866b8695 GKH	307	struct wis_tw9903 *dec = i2c_get_clientdata(client);
866b8695	308
7400516a	309	i2c_set_clientdata(client, NULL);
866b8695 GKH	310	kfree(dec);
	311	return 0;
	312	}
	313
b76a3263	314	static const struct i2c_device_id wis_tw9903_id[] = {
7400516a JD	315	{ "wis_tw9903", 0 },
	316	{ }
	317	};
	318
866b8695 GKH	319	static struct i2c_driver wis_tw9903_driver = {
	320	.driver = {
	321	.name = "WIS TW9903 I2C driver",
	322	},
7400516a JD	323	.probe = wis_tw9903_probe,
7400516a JD	324	.remove = wis_tw9903_remove,
866b8695	325	.command = wis_tw9903_command,
7400516a	326	.id_table = wis_tw9903_id,
866b8695 GKH	327	};
	328
	329	static int __init wis_tw9903_init(void)
	330	{
7400516a	331	return i2c_add_driver(&wis_tw9903_driver);
866b8695 GKH	332	}
	333
	334	static void __exit wis_tw9903_cleanup(void)
	335	{
866b8695 GKH	336	i2c_del_driver(&wis_tw9903_driver);
	337	}
	338
	339	module_init(wis_tw9903_init);
	340	module_exit(wis_tw9903_cleanup);
	341
	342	MODULE_LICENSE("GPL v2");