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Diffstat (limited to 'drivers/media/video/bt819.c')
-rw-r--r--drivers/media/video/bt819.c660
1 files changed, 660 insertions, 0 deletions
diff --git a/drivers/media/video/bt819.c b/drivers/media/video/bt819.c
new file mode 100644
index 000000000000..cf0db2554a80
--- /dev/null
+++ b/drivers/media/video/bt819.c
@@ -0,0 +1,660 @@
+/*
+ * 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>
+ *
+ * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
+ * - moved over to linux>=2.4.x i2c protocol (9/9/2002)
+ *
+ * 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/major.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/signal.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <linux/sched.h>
+#include <asm/segment.h>
+#include <linux/types.h>
+
+#include <linux/videodev.h>
+#include <asm/uaccess.h>
+
+MODULE_DESCRIPTION("Brooktree-819 video decoder driver");
+MODULE_AUTHOR("Mike Bernson & Dave Perks");
+MODULE_LICENSE("GPL");
+
+#include <linux/i2c.h>
+#include <linux/i2c-dev.h>
+
+#define I2C_NAME(s) (s)->name
+
+#include <linux/video_decoder.h>
+
+static int debug = 0;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0-1)");
+
+#define dprintk(num, format, args...) \
+ do { \
+ if (debug >= num) \
+ printk(format, ##args); \
+ } while (0)
+
+/* ----------------------------------------------------------------------- */
+
+struct bt819 {
+ 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;
+};
+
+/* for values, see the bt819 datasheet */
+static struct timing timing_data[] = {
+ {864 - 24, 20, 625 - 2, 1, 0x0504, 0x0000},
+ {858 - 24, 20, 525 - 2, 1, 0x00f8, 0x0000},
+};
+
+#define I2C_BT819 0x8a
+
+/* ----------------------------------------------------------------------- */
+
+static inline int
+bt819_write (struct i2c_client *client,
+ u8 reg,
+ u8 value)
+{
+ struct bt819 *decoder = i2c_get_clientdata(client);
+
+ decoder->reg[reg] = value;
+ return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static inline int
+bt819_setbit (struct i2c_client *client,
+ u8 reg,
+ u8 bit,
+ u8 value)
+{
+ struct bt819 *decoder = i2c_get_clientdata(client);
+
+ return bt819_write(client, reg,
+ (decoder->
+ reg[reg] & ~(1 << bit)) |
+ (value ? (1 << bit) : 0));
+}
+
+static int
+bt819_write_block (struct i2c_client *client,
+ const u8 *data,
+ unsigned int len)
+{
+ int ret = -1;
+ u8 reg;
+
+ /* the bt819 has an autoincrement function, use it if
+ * the adapter understands raw I2C */
+ if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ /* do raw I2C, not smbus compatible */
+ struct bt819 *decoder = i2c_get_clientdata(client);
+ struct i2c_msg msg;
+ u8 block_data[32];
+
+ msg.addr = client->addr;
+ msg.flags = 0;
+ while (len >= 2) {
+ msg.buf = (char *) block_data;
+ msg.len = 0;
+ block_data[msg.len++] = reg = data[0];
+ do {
+ block_data[msg.len++] =
+ decoder->reg[reg++] = data[1];
+ len -= 2;
+ data += 2;
+ } while (len >= 2 && data[0] == reg &&
+ msg.len < 32);
+ if ((ret = i2c_transfer(client->adapter,
+ &msg, 1)) < 0)
+ break;
+ }
+ } else {
+ /* do some slow I2C emulation kind of thing */
+ while (len >= 2) {
+ reg = *data++;
+ if ((ret = bt819_write(client, reg, *data++)) < 0)
+ break;
+ len -= 2;
+ }
+ }
+
+ return ret;
+}
+
+static inline int
+bt819_read (struct i2c_client *client,
+ u8 reg)
+{
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int
+bt819_init (struct i2c_client *client)
+{
+ struct bt819 *decoder = i2c_get_clientdata(client);
+
+ 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 0x00
+ chroma comb OFF, line drop scaling, interlace scaling
+ BUG? Why does turning the chroma comb on fuck up color?
+ Bug in the bt819 stepping on my board?
+ */
+ 0x14, 0x00, /* 0x14 Vertial Scaling lsb */
+ 0x16, 0x07, /* 0x16 Video Timing Polarity
+ ACTIVE=active low
+ FIELD: high=odd,
+ vreset=active high,
+ hreset=active high */
+ 0x18, 0x68, /* 0x18 AGC Delay */
+ 0x19, 0x5d, /* 0x19 Burst Gate Delay */
+ 0x1a, 0x80, /* 0x1a ADC Interface */
+ };
+
+ struct timing *timing = &timing_data[decoder->norm];
+
+ init[0x03 * 2 - 1] =
+ (((timing->vdelay >> 8) & 0x03) << 6) | (((timing->
+ vactive >> 8) &
+ 0x03) << 4) |
+ (((timing->hdelay >> 8) & 0x03) << 2) | ((timing->
+ hactive >> 8) &
+ 0x03);
+ init[0x04 * 2 - 1] = timing->vdelay & 0xff;
+ init[0x05 * 2 - 1] = timing->vactive & 0xff;
+ init[0x06 * 2 - 1] = timing->hdelay & 0xff;
+ init[0x07 * 2 - 1] = timing->hactive & 0xff;
+ init[0x08 * 2 - 1] = timing->hscale >> 8;
+ init[0x09 * 2 - 1] = timing->hscale & 0xff;
+ /* 0x15 in array is address 0x19 */
+ init[0x15 * 2 - 1] = (decoder->norm == 0) ? 115 : 93; /* Chroma burst delay */
+ /* reset */
+ bt819_write(client, 0x1f, 0x00);
+ mdelay(1);
+
+ /* init */
+ return bt819_write_block(client, init, sizeof(init));
+
+}
+
+/* ----------------------------------------------------------------------- */
+
+static int
+bt819_command (struct i2c_client *client,
+ unsigned int cmd,
+ void *arg)
+{
+ int temp;
+
+ struct bt819 *decoder = i2c_get_clientdata(client);
+
+ if (!decoder->initialized) { // First call to bt819_init could be
+ bt819_init(client); // without #FRST = 0
+ decoder->initialized = 1;
+ }
+
+ switch (cmd) {
+
+ case 0:
+ /* This is just for testing!!! */
+ bt819_init(client);
+ break;
+
+ case DECODER_GET_CAPABILITIES:
+ {
+ struct video_decoder_capability *cap = arg;
+
+ cap->flags = VIDEO_DECODER_PAL |
+ VIDEO_DECODER_NTSC |
+ VIDEO_DECODER_AUTO |
+ VIDEO_DECODER_CCIR;
+ cap->inputs = 8;
+ cap->outputs = 1;
+ }
+ break;
+
+ case DECODER_GET_STATUS:
+ {
+ int *iarg = arg;
+ int status;
+ int res;
+
+ status = bt819_read(client, 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;
+
+ dprintk(1, KERN_INFO "%s: get status %x\n", I2C_NAME(client),
+ *iarg);
+ }
+ break;
+
+ case DECODER_SET_NORM:
+ {
+ int *iarg = arg;
+ struct timing *timing = NULL;
+
+ dprintk(1, KERN_INFO "%s: set norm %x\n", I2C_NAME(client),
+ *iarg);
+
+ switch (*iarg) {
+ case VIDEO_MODE_NTSC:
+ bt819_setbit(client, 0x01, 0, 1);
+ bt819_setbit(client, 0x01, 1, 0);
+ bt819_setbit(client, 0x01, 5, 0);
+ bt819_write(client, 0x18, 0x68);
+ bt819_write(client, 0x19, 0x5d);
+ //bt819_setbit(client, 0x1a, 5, 1);
+ timing = &timing_data[VIDEO_MODE_NTSC];
+ break;
+ case VIDEO_MODE_PAL:
+ bt819_setbit(client, 0x01, 0, 1);
+ bt819_setbit(client, 0x01, 1, 1);
+ bt819_setbit(client, 0x01, 5, 1);
+ bt819_write(client, 0x18, 0x7f);
+ bt819_write(client, 0x19, 0x72);
+ //bt819_setbit(client, 0x1a, 5, 0);
+ timing = &timing_data[VIDEO_MODE_PAL];
+ break;
+ case VIDEO_MODE_AUTO:
+ bt819_setbit(client, 0x01, 0, 0);
+ bt819_setbit(client, 0x01, 1, 0);
+ break;
+ default:
+ dprintk(1,
+ KERN_ERR
+ "%s: unsupported norm %d\n",
+ I2C_NAME(client), *iarg);
+ return -EINVAL;
+ }
+
+ if (timing) {
+ bt819_write(client, 0x03,
+ (((timing->vdelay >> 8) & 0x03) << 6) |
+ (((timing->vactive >> 8) & 0x03) << 4) |
+ (((timing->hdelay >> 8) & 0x03) << 2) |
+ ((timing->hactive >> 8) & 0x03) );
+ bt819_write(client, 0x04, timing->vdelay & 0xff);
+ bt819_write(client, 0x05, timing->vactive & 0xff);
+ bt819_write(client, 0x06, timing->hdelay & 0xff);
+ bt819_write(client, 0x07, timing->hactive & 0xff);
+ bt819_write(client, 0x08, (timing->hscale >> 8) & 0xff);
+ bt819_write(client, 0x09, timing->hscale & 0xff);
+ }
+
+ decoder->norm = *iarg;
+ }
+ break;
+
+ case DECODER_SET_INPUT:
+ {
+ int *iarg = arg;
+
+ dprintk(1, KERN_INFO "%s: set input %x\n", I2C_NAME(client),
+ *iarg);
+
+ if (*iarg < 0 || *iarg > 7) {
+ return -EINVAL;
+ }
+
+ if (decoder->input != *iarg) {
+ decoder->input = *iarg;
+ /* select mode */
+ if (decoder->input == 0) {
+ bt819_setbit(client, 0x0b, 6, 0);
+ bt819_setbit(client, 0x1a, 1, 1);
+ } else {
+ bt819_setbit(client, 0x0b, 6, 1);
+ bt819_setbit(client, 0x1a, 1, 0);
+ }
+ }
+ }
+ break;
+
+ case DECODER_SET_OUTPUT:
+ {
+ int *iarg = arg;
+
+ dprintk(1, KERN_INFO "%s: set output %x\n", I2C_NAME(client),
+ *iarg);
+
+ /* not much choice of outputs */
+ if (*iarg != 0) {
+ return -EINVAL;
+ }
+ }
+ break;
+
+ case DECODER_ENABLE_OUTPUT:
+ {
+ int *iarg = arg;
+ int enable = (*iarg != 0);
+
+ dprintk(1, KERN_INFO "%s: enable output %x\n",
+ I2C_NAME(client), *iarg);
+
+ if (decoder->enable != enable) {
+ decoder->enable = enable;
+
+ if (decoder->enable) {
+ bt819_setbit(client, 0x16, 7, 0);
+ } else {
+ bt819_setbit(client, 0x16, 7, 1);
+ }
+ }
+ }
+ break;
+
+ case DECODER_SET_PICTURE:
+ {
+ struct video_picture *pic = arg;
+
+ dprintk(1,
+ KERN_INFO
+ "%s: set picture brightness %d contrast %d colour %d\n",
+ I2C_NAME(client), 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(client, 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(client, 0x0c,
+ (decoder->contrast >> 7) & 0xff);
+ bt819_setbit(client, 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(client, 0x0d,
+ (decoder->sat >> 7) & 0xff);
+ bt819_setbit(client, 0x0b, 1,
+ ((decoder->sat >> 15) & 0x01));
+
+ temp = (decoder->sat * 201) / 237;
+ bt819_write(client, 0x0e, (temp >> 7) & 0xff);
+ bt819_setbit(client, 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(client, 0x0f,
+ 128 - (decoder->hue >> 8));
+ }
+ }
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+/*
+ * Generic i2c probe
+ * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
+ */
+static unsigned short normal_i2c[] = {
+ I2C_BT819 >> 1,
+ I2C_CLIENT_END,
+};
+static unsigned short normal_i2c_range[] = { I2C_CLIENT_END };
+
+static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short force[2] = { I2C_CLIENT_END , I2C_CLIENT_END };
+
+static struct i2c_client_address_data addr_data = {
+ .normal_i2c = normal_i2c,
+ .normal_i2c_range = normal_i2c_range,
+ .probe = probe,
+ .probe_range = probe_range,
+ .ignore = ignore,
+ .ignore_range = ignore_range,
+ .force = force
+};
+
+static struct i2c_driver i2c_driver_bt819;
+
+static int
+bt819_detect_client (struct i2c_adapter *adapter,
+ int address,
+ int kind)
+{
+ int i, id;
+ struct bt819 *decoder;
+ struct i2c_client *client;
+
+ dprintk(1,
+ KERN_INFO
+ "saa7111.c: detecting bt819 client on address 0x%x\n",
+ address << 1);
+
+ /* Check if the adapter supports the needed features */
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return 0;
+
+ client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+ if (client == 0)
+ return -ENOMEM;
+ memset(client, 0, sizeof(struct i2c_client));
+ client->addr = address;
+ client->adapter = adapter;
+ client->driver = &i2c_driver_bt819;
+ client->flags = I2C_CLIENT_ALLOW_USE;
+
+ decoder = kmalloc(sizeof(struct bt819), GFP_KERNEL);
+ if (decoder == NULL) {
+ kfree(client);
+ return -ENOMEM;
+ }
+
+ memset(decoder, 0, sizeof(struct bt819));
+ 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;
+ i2c_set_clientdata(client, decoder);
+
+ id = bt819_read(client, 0x17);
+ switch (id & 0xf0) {
+ case 0x70:
+ strlcpy(I2C_NAME(client), "bt819a", sizeof(I2C_NAME(client)));
+ break;
+ case 0x60:
+ strlcpy(I2C_NAME(client), "bt817a", sizeof(I2C_NAME(client)));
+ break;
+ case 0x20:
+ strlcpy(I2C_NAME(client), "bt815a", sizeof(I2C_NAME(client)));
+ break;
+ default:
+ dprintk(1,
+ KERN_ERR
+ "bt819: unknown chip version 0x%x (ver 0x%x)\n",
+ id & 0xf0, id & 0x0f);
+ kfree(decoder);
+ kfree(client);
+ return 0;
+ }
+
+ i = i2c_attach_client(client);
+ if (i) {
+ kfree(client);
+ kfree(decoder);
+ return i;
+ }
+
+ i = bt819_init(client);
+ if (i < 0) {
+ dprintk(1, KERN_ERR "%s_attach: init status %d\n",
+ I2C_NAME(client), i);
+ } else {
+ dprintk(1,
+ KERN_INFO
+ "%s_attach: chip version 0x%x at address 0x%x\n",
+ I2C_NAME(client), id & 0x0f,
+ client->addr << 1);
+ }
+
+ return 0;
+}
+
+static int
+bt819_attach_adapter (struct i2c_adapter *adapter)
+{
+ return i2c_probe(adapter, &addr_data, &bt819_detect_client);
+}
+
+static int
+bt819_detach_client (struct i2c_client *client)
+{
+ struct bt819 *decoder = i2c_get_clientdata(client);
+ int err;
+
+ err = i2c_detach_client(client);
+ if (err) {
+ return err;
+ }
+
+ kfree(decoder);
+ kfree(client);
+
+ return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static struct i2c_driver i2c_driver_bt819 = {
+ .owner = THIS_MODULE,
+ .name = "bt819",
+
+ .id = I2C_DRIVERID_BT819,
+ .flags = I2C_DF_NOTIFY,
+
+ .attach_adapter = bt819_attach_adapter,
+ .detach_client = bt819_detach_client,
+ .command = bt819_command,
+};
+
+static int __init
+bt819_init_module (void)
+{
+ return i2c_add_driver(&i2c_driver_bt819);
+}
+
+static void __exit
+bt819_exit (void)
+{
+ i2c_del_driver(&i2c_driver_bt819);
+}
+
+module_init(bt819_init_module);
+module_exit(bt819_exit);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 04:03:44 +0100