patch-2.4.5 linux/drivers/media/video/bt819.c

• Lines: 497
• Date: Sat May 19 17:43:06 2001
• Orig file: v2.4.4/linux/drivers/media/video/bt819.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.4/linux/drivers/media/video/bt819.c linux/drivers/media/video/bt819.c
@@ -0,0 +1,496 @@
+/* 
+    bt819 - BT819A VideoStream Decoder (Rockwell Part)
+
+    Copyright (C) 1999 Mike Bernson <mike@mlb.org>
+    Copyright (C) 1998 Dave Perks <dperks@ibm.net>
+
+    Modifications for LML33/DC10plus unified driver
+    Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
+    
+    This code was modify/ported from the saa7111 driver written
+    by Dave Perks.
+
+    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.
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/malloc.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+
+#include <linux/videodev.h>
+
+#include <linux/i2c-old.h>
+#include <linux/video_decoder.h>
+
+#define DEBUG(x)       x	/* Debug driver */
+
+/* ----------------------------------------------------------------------- */
+
+struct bt819 {
+	struct i2c_bus *bus;
+	int addr;
+	unsigned char reg[32];
+
+	int initialized;
+	int norm;
+	int input;
+	int enable;
+	int bright;
+	int contrast;
+	int hue;
+	int sat;
+};
+
+struct timing {
+	int hactive;
+	int hdelay;
+	int vactive;
+	int vdelay;
+	int hscale;
+	int vscale;
+};
+
+struct timing timing_data[] = {
+	{864 - 24, 2, 623, 1, 0x0504, 0x0000},
+	{858 - 24, 2, 523, 1, 0x00f8, 0x0000},
+//      { 858-68, 64, 523, 1, 0x00f8, 0x0000 },
+};
+
+#define   I2C_BT819        0x8a
+
+#define   I2C_DELAY   10
+
+/* ----------------------------------------------------------------------- */
+
+static int bt819_write(struct bt819 *dev, unsigned char subaddr,
+		       unsigned char data)
+{
+	int ack;
+
+	LOCK_I2C_BUS(dev->bus);
+	i2c_start(dev->bus);
+	i2c_sendbyte(dev->bus, dev->addr, I2C_DELAY);
+	i2c_sendbyte(dev->bus, subaddr, I2C_DELAY);
+	ack = i2c_sendbyte(dev->bus, data, I2C_DELAY);
+	dev->reg[subaddr] = data;
+	i2c_stop(dev->bus);
+	UNLOCK_I2C_BUS(dev->bus);
+	return ack;
+}
+
+static int bt819_setbit(struct bt819 *dev, int subaddr, int bit, int data)
+{
+	return bt819_write(dev, subaddr, (dev->reg[subaddr] & ~(1 << bit)) | (data ? (1 << bit) : 0));
+}
+
+static int bt819_write_block(struct bt819 *dev, unsigned const char *data,
+			     unsigned int len)
+{
+	int ack;
+	unsigned subaddr;
+
+	ack = 0;
+	while (len > 1) {
+		LOCK_I2C_BUS(dev->bus);
+		i2c_start(dev->bus);
+		i2c_sendbyte(dev->bus, dev->addr, I2C_DELAY);
+		ack = i2c_sendbyte(dev->bus, (subaddr = *data++), I2C_DELAY);
+		ack = i2c_sendbyte(dev->bus, (dev->reg[subaddr] = *data++),
+				 I2C_DELAY);
+		len -= 2;
+		while (len > 1 && *data == ++subaddr) {
+			data++;
+			ack =
+			    i2c_sendbyte(dev->bus, (dev->reg[subaddr] = *data++), I2C_DELAY);
+			len -= 2;
+		}
+		i2c_stop(dev->bus);
+		UNLOCK_I2C_BUS(dev->bus);
+	}
+	return ack;
+}
+
+static int bt819_read(struct bt819 *dev, unsigned char subaddr)
+{
+	int data;
+
+	LOCK_I2C_BUS(dev->bus);
+	i2c_start(dev->bus);
+	i2c_sendbyte(dev->bus, dev->addr, I2C_DELAY);
+	i2c_sendbyte(dev->bus, subaddr, I2C_DELAY);
+	i2c_start(dev->bus);
+	i2c_sendbyte(dev->bus, dev->addr | 1, I2C_DELAY);
+	data = i2c_readbyte(dev->bus, 1);
+	i2c_stop(dev->bus);
+	UNLOCK_I2C_BUS(dev->bus);
+	return data;
+}
+
+static int bt819_init(struct i2c_device *device)
+{
+	struct bt819 *decoder;
+
+	static unsigned char init[] = {
+		//0x1f, 0x00,     /* Reset */
+		0x01, 0x59,	/* 0x01 input format */
+		0x02, 0x00,	/* 0x02 temporal decimation */
+		0x03, 0x12,	/* 0x03 Cropping msb */
+		0x04, 0x16,	/* 0x04 Vertical Delay, lsb */
+		0x05, 0xe0,	/* 0x05 Vertical Active lsb */
+		0x06, 0x80,	/* 0x06 Horizontal Delay lsb */
+		0x07, 0xd0,	/* 0x07 Horizontal Active lsb */
+		0x08, 0x00,	/* 0x08 Horizontal Scaling msb */
+		0x09, 0xf8,	/* 0x09 Horizontal Scaling lsb */
+		0x0a, 0x00,	/* 0x0a Brightness control */
+		0x0b, 0x30,	/* 0x0b Miscellaneous control */
+		0x0c, 0xd8,	/* 0x0c Luma Gain lsb */
+		0x0d, 0xfe,	/* 0x0d Chroma Gain (U) lsb */
+		0x0e, 0xb4,	/* 0x0e Chroma Gain (V) msb */
+		0x0f, 0x00,	/* 0x0f Hue control */
+		0x12, 0x04,	/* 0x12 Output Format */
+		0x13, 0x20,	/* 0x13 Vertial Scaling msb 0x60, */
+		0x14, 0x00,	/* 0x14 Vertial Scaling lsb */
+		0x16, 0x04,	/* 0x16 Video Timing Polarity 0x02, */
+		0x18, 0x68,	/* 0x18 AGC Delay */
+		0x19, 0x5d,	/* 0x19 Burst Gate Delay */
+		0x1a, 0x80,	/* 0x1a ADC Interface */
+	};
+
+	struct timing *timing;
+
+	decoder = device->data;
+	timing = &timing_data[decoder->norm];
+
+	init[3 * 2 - 1] = (((timing->vdelay >> 8) & 0x03) << 6) |
+	    (((timing->vactive >> 8) & 0x03) << 4) |
+	    (((timing->hdelay >> 8) & 0x03) << 2) |
+	    ((timing->hactive >> 8) & 0x03);
+	init[4 * 2 - 1] = timing->vdelay & 0xff;
+	init[5 * 2 - 1] = timing->vactive & 0xff;
+	init[6 * 2 - 1] = timing->hdelay & 0xff;
+	init[7 * 2 - 1] = timing->hactive & 0xff;
+	init[8 * 2 - 1] = timing->hscale >> 8;
+	init[9 * 2 - 1] = timing->hscale & 0xff;
+
+	bt819_write(decoder, 0x1f, 0x00);
+	mdelay(1);
+	return bt819_write_block(decoder, init, sizeof(init));
+
+}
+
+/* ----------------------------------------------------------------------- */
+
+static int bt819_attach(struct i2c_device *device)
+{
+	int i;
+	struct bt819 *decoder;
+
+	MOD_INC_USE_COUNT;
+
+	device->data = decoder = kmalloc(sizeof(struct bt819), GFP_KERNEL);
+	if (decoder == NULL) {
+		MOD_DEC_USE_COUNT;
+		return -ENOMEM;
+	}
+
+	memset(decoder, 0, sizeof(struct bt819));
+	strcpy(device->name, "bt819");
+	decoder->bus = device->bus;
+	decoder->addr = device->addr;
+	decoder->norm = VIDEO_MODE_NTSC;
+	decoder->input = 0;
+	decoder->enable = 1;
+	decoder->bright = 32768;
+	decoder->contrast = 32768;
+	decoder->hue = 32768;
+	decoder->sat = 32768;
+	decoder->initialized = 0;
+
+	i = bt819_init(device);
+	if (i < 0) {
+		printk(KERN_ERR "%s: bt819_attach: init status %d\n",
+		       decoder->bus->name, i);
+	} else {
+		printk(KERN_INFO "%s: bt819_attach: chip version %x\n",
+		       decoder->bus->name, bt819_read(decoder,
+						      0x17) & 0x0f);
+	}
+	return 0;
+}
+
+static int bt819_detach(struct i2c_device *device)
+{
+	kfree(device->data);
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+static int bt819_command(struct i2c_device *device, unsigned int cmd, void *arg)
+{
+	int temp;
+
+	struct bt819 *decoder = device->data;
+	//return 0;
+
+	if (!decoder->initialized) {	// First call to bt819_init could be
+		bt819_init(device);	// without #FRST = 0
+		decoder->initialized = 1;
+	}
+
+	switch (cmd) {
+
+	case DECODER_GET_CAPABILITIES:
+		{
+			struct video_decoder_capability *cap = arg;
+
+			cap->flags
+			    = VIDEO_DECODER_PAL
+			    | VIDEO_DECODER_NTSC | VIDEO_DECODER_CCIR;
+			cap->inputs = 8;
+			cap->outputs = 1;
+		}
+		break;
+
+	case DECODER_GET_STATUS:
+		{
+			int *iarg = arg;
+			int status;
+			int res;
+
+			status = bt819_read(decoder, 0x00);
+			res = 0;
+			if ((status & 0x80)) {
+				res |= DECODER_STATUS_GOOD;
+			}
+			switch (decoder->norm) {
+			case VIDEO_MODE_NTSC:
+				res |= DECODER_STATUS_NTSC;
+				break;
+			case VIDEO_MODE_PAL:
+				res |= DECODER_STATUS_PAL;
+				break;
+			default:
+			case VIDEO_MODE_AUTO:
+				if ((status & 0x10)) {
+					res |= DECODER_STATUS_PAL;
+				} else {
+					res |= DECODER_STATUS_NTSC;
+				}
+				break;
+			}
+			res |= DECODER_STATUS_COLOR;
+			*iarg = res;
+
+			DEBUG(printk(KERN_INFO "%s-bt819: get status %x\n",
+				     decoder->bus->name, *iarg));
+		}
+		break;
+
+	case DECODER_SET_NORM:
+		{
+			int *iarg = arg;
+			struct timing *timing;
+
+			DEBUG(printk(KERN_INFO "%s-bt819: set norm %x\n",
+				     decoder->bus->name, *iarg));
+
+			if (*iarg == VIDEO_MODE_NTSC) {
+				bt819_setbit(decoder, 0x01, 0, 1);
+				bt819_setbit(decoder, 0x01, 1, 0);
+				bt819_write(decoder, 0x18, 0x68);
+				bt819_write(decoder, 0x19, 0x5d);
+				//bt819_setbit(decoder, 0x1a,  5, 1);
+				timing = &timing_data[VIDEO_MODE_NTSC];
+			} else {
+				bt819_setbit(decoder, 0x01, 0, 1);
+				bt819_setbit(decoder, 0x01, 1, 1);
+				bt819_write(decoder, 0x18, 0x7f);
+				bt819_write(decoder, 0x19, 0x72);
+				//bt819_setbit(decoder, 0x1a,  5, 0);
+				timing = &timing_data[VIDEO_MODE_PAL];
+			}
+
+			bt819_write(decoder, 0x03,
+				    (((timing->vdelay >> 8) & 0x03) << 6) |
+				    (((timing->
+				       vactive >> 8) & 0x03) << 4) |
+				    (((timing->
+				       hdelay >> 8) & 0x03) << 2) |
+				    ((timing->hactive >> 8) & 0x03));
+			bt819_write(decoder, 0x04, timing->vdelay & 0xff);
+			bt819_write(decoder, 0x05, timing->vactive & 0xff);
+			bt819_write(decoder, 0x06, timing->hdelay & 0xff);
+			bt819_write(decoder, 0x07, timing->hactive & 0xff);
+			bt819_write(decoder, 0x08, timing->hscale >> 8);
+			bt819_write(decoder, 0x09, timing->hscale & 0xff);
+			decoder->norm = *iarg;
+		}
+		break;
+
+	case DECODER_SET_INPUT:
+		{
+			int *iarg = arg;
+
+			DEBUG(printk(KERN_INFO "%s-bt819: set input %x\n",
+				     decoder->bus->name, *iarg));
+
+			if (*iarg < 0 || *iarg > 7) {
+				return -EINVAL;
+			}
+
+			if (decoder->input != *iarg) {
+				decoder->input = *iarg;
+				/* select mode */
+				if (decoder->input == 0) {
+					bt819_setbit(decoder, 0x0b, 6, 0);
+					bt819_setbit(decoder, 0x1a, 1, 1);
+				} else {
+					bt819_setbit(decoder, 0x0b, 6, 1);
+					bt819_setbit(decoder, 0x1a, 1, 0);
+				}
+			}
+		}
+		break;
+
+	case DECODER_SET_OUTPUT:
+		{
+			int *iarg = arg;
+
+			DEBUG(printk(KERN_INFO "%s-bt819: set output %x\n",
+				     decoder->bus->name, *iarg));
+
+			/* not much choice of outputs */
+			if (*iarg != 0) {
+				return -EINVAL;
+			}
+		}
+		break;
+
+	case DECODER_ENABLE_OUTPUT:
+		{
+			int *iarg = arg;
+			int enable = (*iarg != 0);
+
+			DEBUG(printk
+			      (KERN_INFO "%s-bt819: enable output %x\n",
+			       decoder->bus->name, *iarg));
+
+			if (decoder->enable != enable) {
+				decoder->enable = enable;
+
+				if (decoder->enable) {
+					bt819_setbit(decoder, 0x16, 7, 0);
+				} else {
+					bt819_setbit(decoder, 0x16, 7, 1);
+				}
+			}
+		}
+		break;
+
+	case DECODER_SET_PICTURE:
+		{
+			struct video_picture *pic = arg;
+
+			DEBUG(printk
+			      (KERN_INFO
+			       "%s-bt819: set picture brightness %d contrast %d colour %d\n",
+			       decoder->bus->name, pic->brightness,
+			       pic->contrast, pic->colour));
+
+
+			if (decoder->bright != pic->brightness) {
+				/* We want -128 to 127 we get 0-65535 */
+				decoder->bright = pic->brightness;
+				bt819_write(decoder, 0x0a,
+					    (decoder->bright >> 8) - 128);
+			}
+
+			if (decoder->contrast != pic->contrast) {
+				/* We want 0 to 511 we get 0-65535 */
+				decoder->contrast = pic->contrast;
+				bt819_write(decoder, 0x0c,
+					    (decoder->
+					     contrast >> 7) & 0xff);
+				bt819_setbit(decoder, 0x0b, 2,
+					     ((decoder->
+					       contrast >> 15) & 0x01));
+			}
+
+			if (decoder->sat != pic->colour) {
+				/* We want 0 to 511 we get 0-65535 */
+				decoder->sat = pic->colour;
+				bt819_write(decoder, 0x0d,
+					    (decoder->sat >> 7) & 0xff);
+				bt819_setbit(decoder, 0x0b, 1,
+					     ((decoder->
+					       sat >> 15) & 0x01));
+
+				temp = (decoder->sat * 201) / 237;
+				bt819_write(decoder, 0x0e,
+					    (temp >> 7) & 0xff);
+				bt819_setbit(decoder, 0x0b, 0,
+					     (temp >> 15) & 0x01);
+			}
+
+			if (decoder->hue != pic->hue) {
+				/* We want -128 to 127 we get 0-65535 */
+				decoder->hue = pic->hue;
+				bt819_write(decoder, 0x0f,
+					    128 - (decoder->hue >> 8));
+			}
+		}
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static struct i2c_driver i2c_driver_bt819 = {
+	"bt819",		/* name */
+	I2C_DRIVERID_VIDEODECODER,	/* ID */
+	I2C_BT819, I2C_BT819 + 1,
+
+	bt819_attach,
+	bt819_detach,
+	bt819_command
+};
+
+EXPORT_NO_SYMBOLS;
+
+static int bt819_setup(void)
+{
+	return i2c_register_driver(&i2c_driver_bt819);
+}
+
+static void bt819_exit(void)
+{
+	i2c_unregister_driver(&i2c_driver_bt819);
+}
+
+module_init(bt819_setup);
+module_exit(bt819_exit);