--- /dev/null
+/*
+ bt866 - BT866 Digital Video Encoder (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 code was adapted for the bt866 by Christer Weinigel and ported
+ to 2.6 by Martin Samuelsson.
+
+ 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 <linux/types.h>
+#include <linux/i2c.h>
+
+#include <linux/videodev.h>
+#include <asm/uaccess.h>
+
+#include <linux/video_encoder.h>
+
+MODULE_LICENSE("GPL");
+
+#define BT866_DEVNAME "bt866"
+#define I2C_BT866 0x88
+
+MODULE_LICENSE("GPL");
+
+#define DEBUG(x) /* Debug driver */
+
+/* ----------------------------------------------------------------------- */
+
+struct bt866 {
+ struct i2c_client *i2c;
+ int addr;
+ unsigned char reg[128];
+
+ int norm;
+ int enable;
+ int bright;
+ int contrast;
+ int hue;
+ int sat;
+};
+
+static int bt866_write(struct bt866 *dev,
+ unsigned char subaddr, unsigned char data);
+
+static int bt866_do_command(struct bt866 *encoder,
+ unsigned int cmd, void *arg)
+{
+ switch (cmd) {
+ case ENCODER_GET_CAPABILITIES:
+ {
+ struct video_encoder_capability *cap = arg;
+
+ DEBUG(printk
+ (KERN_INFO "%s: get capabilities\n",
+ encoder->i2c->name));
+
+ cap->flags
+ = VIDEO_ENCODER_PAL
+ | VIDEO_ENCODER_NTSC
+ | VIDEO_ENCODER_CCIR;
+ cap->inputs = 2;
+ cap->outputs = 1;
+ }
+ break;
+
+ case ENCODER_SET_NORM:
+ {
+ int *iarg = arg;
+
+ DEBUG(printk(KERN_INFO "%s: set norm %d\n",
+ encoder->i2c->name, *iarg));
+
+ switch (*iarg) {
+
+ case VIDEO_MODE_NTSC:
+ break;
+
+ case VIDEO_MODE_PAL:
+ break;
+
+ default:
+ return -EINVAL;
+
+ }
+ encoder->norm = *iarg;
+ }
+ break;
+
+ case ENCODER_SET_INPUT:
+ {
+ int *iarg = arg;
+ static const __u8 init[] = {
+ 0xc8, 0xcc, /* CRSCALE */
+ 0xca, 0x91, /* CBSCALE */
+ 0xcc, 0x24, /* YC16 | OSDNUM */
+ 0xda, 0x00, /* */
+ 0xdc, 0x24, /* SETMODE | PAL */
+ 0xde, 0x02, /* EACTIVE */
+
+ /* overlay colors */
+ 0x70, 0xEB, 0x90, 0x80, 0xB0, 0x80, /* white */
+ 0x72, 0xA2, 0x92, 0x8E, 0xB2, 0x2C, /* yellow */
+ 0x74, 0x83, 0x94, 0x2C, 0xB4, 0x9C, /* cyan */
+ 0x76, 0x70, 0x96, 0x3A, 0xB6, 0x48, /* green */
+ 0x78, 0x54, 0x98, 0xC6, 0xB8, 0xB8, /* magenta */
+ 0x7A, 0x41, 0x9A, 0xD4, 0xBA, 0x64, /* red */
+ 0x7C, 0x23, 0x9C, 0x72, 0xBC, 0xD4, /* blue */
+ 0x7E, 0x10, 0x9E, 0x80, 0xBE, 0x80, /* black */
+
+ 0x60, 0xEB, 0x80, 0x80, 0xc0, 0x80, /* white */
+ 0x62, 0xA2, 0x82, 0x8E, 0xc2, 0x2C, /* yellow */
+ 0x64, 0x83, 0x84, 0x2C, 0xc4, 0x9C, /* cyan */
+ 0x66, 0x70, 0x86, 0x3A, 0xc6, 0x48, /* green */
+ 0x68, 0x54, 0x88, 0xC6, 0xc8, 0xB8, /* magenta */
+ 0x6A, 0x41, 0x8A, 0xD4, 0xcA, 0x64, /* red */
+ 0x6C, 0x23, 0x8C, 0x72, 0xcC, 0xD4, /* blue */
+ 0x6E, 0x10, 0x8E, 0x80, 0xcE, 0x80, /* black */
+ };
+ int i;
+ u8 val;
+
+ for (i = 0; i < ARRAY_SIZE(init) / 2; i += 2)
+ bt866_write(encoder, init[i], init[i+1]);
+
+ val = encoder->reg[0xdc];
+
+ if (*iarg == 0)
+ val |= 0x40; /* CBSWAP */
+ else
+ val &= ~0x40; /* !CBSWAP */
+
+ bt866_write(encoder, 0xdc, val);
+
+ val = encoder->reg[0xcc];
+ if (*iarg == 2)
+ val |= 0x01; /* OSDBAR */
+ else
+ val &= ~0x01; /* !OSDBAR */
+ bt866_write(encoder, 0xcc, val);
+
+ DEBUG(printk(KERN_INFO "%s: set input %d\n",
+ encoder->i2c->name, *iarg));
+
+ switch (*iarg) {
+ case 0:
+ break;
+ case 1:
+ break;
+ default:
+ return -EINVAL;
+
+ }
+ }
+ break;
+
+ case ENCODER_SET_OUTPUT:
+ {
+ int *iarg = arg;
+
+ DEBUG(printk(KERN_INFO "%s: set output %d\n",
+ encoder->i2c->name, *iarg));
+
+ /* not much choice of outputs */
+ if (*iarg != 0)
+ return -EINVAL;
+ }
+ break;
+
+ case ENCODER_ENABLE_OUTPUT:
+ {
+ int *iarg = arg;
+ encoder->enable = !!*iarg;
+
+ DEBUG(printk
+ (KERN_INFO "%s: enable output %d\n",
+ encoder->i2c->name, encoder->enable));
+ }
+ break;
+
+ case 4711:
+ {
+ int *iarg = arg;
+ __u8 val;
+
+ printk("bt866: square = %d\n", *iarg);
+
+ val = encoder->reg[0xdc];
+ if (*iarg)
+ val |= 1; /* SQUARE */
+ else
+ val &= ~1; /* !SQUARE */
+ bt866_write(encoder, 0xdc, val);
+ break;
+ }
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int bt866_write(struct bt866 *encoder,
+ unsigned char subaddr, unsigned char data)
+{
+ unsigned char buffer[2];
+ int err;
+
+ buffer[0] = subaddr;
+ buffer[1] = data;
+
+ encoder->reg[subaddr] = data;
+
+ DEBUG(printk
+ ("%s: write 0x%02X = 0x%02X\n",
+ encoder->i2c->name, subaddr, data));
+
+ for (err = 0; err < 3;) {
+ if (i2c_master_send(encoder->i2c, buffer, 2) == 2)
+ break;
+ err++;
+ printk(KERN_WARNING "%s: I/O error #%d "
+ "(write 0x%02x/0x%02x)\n",
+ encoder->i2c->name, err, encoder->addr, subaddr);
+ schedule_timeout_interruptible(HZ/10);
+ }
+ if (err == 3) {
+ printk(KERN_WARNING "%s: giving up\n",
+ encoder->i2c->name);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int bt866_attach(struct i2c_adapter *adapter);
+static int bt866_detach(struct i2c_client *client);
+static int bt866_command(struct i2c_client *client,
+ unsigned int cmd, void *arg);
+
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = {I2C_BT866>>1, I2C_CLIENT_END};
+static unsigned short probe[2] = {I2C_CLIENT_END, I2C_CLIENT_END};
+static unsigned short ignore[2] = {I2C_CLIENT_END, I2C_CLIENT_END};
+
+static struct i2c_client_address_data addr_data = {
+ normal_i2c,
+ probe,
+ ignore,
+};
+
+static struct i2c_driver i2c_driver_bt866 = {
+ .driver.name = BT866_DEVNAME,
+ .id = I2C_DRIVERID_BT866,
+ .attach_adapter = bt866_attach,
+ .detach_client = bt866_detach,
+ .command = bt866_command
+};
+
+
+static struct i2c_client bt866_client_tmpl =
+{
+ .name = "(nil)",
+ .addr = 0,
+ .adapter = NULL,
+ .driver = &i2c_driver_bt866,
+ .usage_count = 0
+};
+
+static int bt866_found_proc(struct i2c_adapter *adapter,
+ int addr, int kind)
+{
+ struct bt866 *encoder;
+ struct i2c_client *client;
+
+ client = kzalloc(sizeof(*client), GFP_KERNEL);
+ if (client == NULL)
+ return -ENOMEM;
+ memcpy(client, &bt866_client_tmpl, sizeof(*client));
+
+ encoder = kzalloc(sizeof(*encoder), GFP_KERNEL);
+ if (encoder == NULL) {
+ kfree(client);
+ return -ENOMEM;
+ }
+
+ i2c_set_clientdata(client, encoder);
+ client->adapter = adapter;
+ client->addr = addr;
+ sprintf(client->name, "%s-%02x", BT866_DEVNAME, adapter->id);
+
+ encoder->i2c = client;
+ encoder->addr = addr;
+ //encoder->encoder_type = ENCODER_TYPE_UNKNOWN;
+
+ /* initialize */
+
+ i2c_attach_client(client);
+
+ return 0;
+}
+
+static int bt866_attach(struct i2c_adapter *adapter)
+{
+ if (adapter->id == I2C_HW_B_ZR36067)
+ return i2c_probe(adapter, &addr_data, bt866_found_proc);
+ return 0;
+}
+
+static int bt866_detach(struct i2c_client *client)
+{
+ struct bt866 *encoder = i2c_get_clientdata(client);
+
+ i2c_detach_client(client);
+ kfree(encoder);
+ kfree(client);
+
+ return 0;
+}
+
+static int bt866_command(struct i2c_client *client,
+ unsigned int cmd, void *arg)
+{
+ struct bt866 *encoder = i2c_get_clientdata(client);
+ return bt866_do_command(encoder, cmd, arg);
+}
+
+static int __devinit bt866_init(void)
+{
+ i2c_add_driver(&i2c_driver_bt866);
+ return 0;
+}
+
+static void __devexit bt866_exit(void)
+{
+ i2c_del_driver(&i2c_driver_bt866);
+}
+
+module_init(bt866_init);
+module_exit(bt866_exit);
git://git.onelab.eu / linux-2.6.git / blobdiff