diff options
Diffstat (limited to 'drivers/media/video/bt866.c')
| -rw-r--r-- | drivers/media/video/bt866.c | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/drivers/media/video/bt866.c b/drivers/media/video/bt866.c new file mode 100644 index 0000000..05e42bb --- /dev/null +++ b/drivers/media/video/bt866.c @@ -0,0 +1,377 @@ +/* + 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); |