620 строки
14 KiB
C
620 строки
14 KiB
C
/*
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* saa7111 - Philips SAA7111A video decoder driver version 0.0.3
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*
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* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
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*
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* Slight changes for video timing and attachment output by
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* Wolfgang Scherr <scherr@net4you.net>
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*
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* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
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* - moved over to linux>=2.4.x i2c protocol (1/1/2003)
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*
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* Changes by Michael Hunold <michael@mihu.de>
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* - implemented DECODER_SET_GPIO, DECODER_INIT, DECODER_SET_VBI_BYPASS
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/kernel.h>
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#include <linux/major.h>
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#include <linux/slab.h>
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#include <linux/mm.h>
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#include <linux/pci.h>
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#include <linux/signal.h>
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#include <asm/io.h>
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#include <asm/pgtable.h>
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#include <asm/page.h>
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#include <linux/sched.h>
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#include <asm/segment.h>
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#include <linux/types.h>
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#include <linux/videodev.h>
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#include <asm/uaccess.h>
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MODULE_DESCRIPTION("Philips SAA7111 video decoder driver");
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MODULE_AUTHOR("Dave Perks");
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MODULE_LICENSE("GPL");
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#include <linux/i2c.h>
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#include <linux/i2c-dev.h>
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#define I2C_NAME(s) (s)->name
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#include <linux/video_decoder.h>
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static int debug = 0;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Debug level (0-1)");
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#define dprintk(num, format, args...) \
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do { \
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if (debug >= num) \
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printk(format, ##args); \
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} while (0)
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/* ----------------------------------------------------------------------- */
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struct saa7111 {
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unsigned char reg[32];
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int norm;
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int input;
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int enable;
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int bright;
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int contrast;
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int hue;
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int sat;
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};
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#define I2C_SAA7111 0x48
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/* ----------------------------------------------------------------------- */
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static inline int
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saa7111_write (struct i2c_client *client,
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u8 reg,
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u8 value)
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{
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struct saa7111 *decoder = i2c_get_clientdata(client);
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decoder->reg[reg] = value;
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return i2c_smbus_write_byte_data(client, reg, value);
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}
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static int
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saa7111_write_block (struct i2c_client *client,
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const u8 *data,
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unsigned int len)
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{
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int ret = -1;
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u8 reg;
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/* the saa7111 has an autoincrement function, use it if
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* the adapter understands raw I2C */
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if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
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/* do raw I2C, not smbus compatible */
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struct saa7111 *decoder = i2c_get_clientdata(client);
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struct i2c_msg msg;
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u8 block_data[32];
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msg.addr = client->addr;
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msg.flags = 0;
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while (len >= 2) {
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msg.buf = (char *) block_data;
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msg.len = 0;
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block_data[msg.len++] = reg = data[0];
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do {
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block_data[msg.len++] =
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decoder->reg[reg++] = data[1];
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len -= 2;
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data += 2;
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} while (len >= 2 && data[0] == reg &&
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msg.len < 32);
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if ((ret = i2c_transfer(client->adapter,
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&msg, 1)) < 0)
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break;
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}
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} else {
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/* do some slow I2C emulation kind of thing */
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while (len >= 2) {
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reg = *data++;
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if ((ret = saa7111_write(client, reg,
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*data++)) < 0)
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break;
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len -= 2;
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}
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}
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return ret;
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}
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static int
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saa7111_init_decoder (struct i2c_client *client,
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struct video_decoder_init *init)
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{
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return saa7111_write_block(client, init->data, init->len);
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}
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static inline int
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saa7111_read (struct i2c_client *client,
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u8 reg)
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{
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return i2c_smbus_read_byte_data(client, reg);
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}
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/* ----------------------------------------------------------------------- */
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static const unsigned char saa7111_i2c_init[] = {
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0x00, 0x00, /* 00 - ID byte */
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0x01, 0x00, /* 01 - reserved */
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/*front end */
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0x02, 0xd0, /* 02 - FUSE=3, GUDL=2, MODE=0 */
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0x03, 0x23, /* 03 - HLNRS=0, VBSL=1, WPOFF=0,
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* HOLDG=0, GAFIX=0, GAI1=256, GAI2=256 */
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0x04, 0x00, /* 04 - GAI1=256 */
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0x05, 0x00, /* 05 - GAI2=256 */
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/* decoder */
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0x06, 0xf3, /* 06 - HSB at 13(50Hz) / 17(60Hz)
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* pixels after end of last line */
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/*0x07, 0x13, * 07 - HSS at 113(50Hz) / 117(60Hz) pixels
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* after end of last line */
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0x07, 0xe8, /* 07 - HSS seems to be needed to
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* work with NTSC, too */
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0x08, 0xc8, /* 08 - AUFD=1, FSEL=1, EXFIL=0,
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* VTRC=1, HPLL=0, VNOI=0 */
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0x09, 0x01, /* 09 - BYPS=0, PREF=0, BPSS=0,
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* VBLB=0, UPTCV=0, APER=1 */
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0x0a, 0x80, /* 0a - BRIG=128 */
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0x0b, 0x47, /* 0b - CONT=1.109 */
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0x0c, 0x40, /* 0c - SATN=1.0 */
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0x0d, 0x00, /* 0d - HUE=0 */
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0x0e, 0x01, /* 0e - CDTO=0, CSTD=0, DCCF=0,
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* FCTC=0, CHBW=1 */
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0x0f, 0x00, /* 0f - reserved */
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0x10, 0x48, /* 10 - OFTS=1, HDEL=0, VRLN=1, YDEL=0 */
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0x11, 0x1c, /* 11 - GPSW=0, CM99=0, FECO=0, COMPO=1,
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* OEYC=1, OEHV=1, VIPB=0, COLO=0 */
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0x12, 0x00, /* 12 - output control 2 */
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0x13, 0x00, /* 13 - output control 3 */
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0x14, 0x00, /* 14 - reserved */
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0x15, 0x00, /* 15 - VBI */
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0x16, 0x00, /* 16 - VBI */
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0x17, 0x00, /* 17 - VBI */
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};
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static int
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saa7111_command (struct i2c_client *client,
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unsigned int cmd,
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void *arg)
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{
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struct saa7111 *decoder = i2c_get_clientdata(client);
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switch (cmd) {
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case 0:
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case DECODER_INIT:
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{
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struct video_decoder_init *init = arg;
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if (NULL != init)
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return saa7111_init_decoder(client, init);
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else {
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struct video_decoder_init vdi;
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vdi.data = saa7111_i2c_init;
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vdi.len = sizeof(saa7111_i2c_init);
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return saa7111_init_decoder(client, &vdi);
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}
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}
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case DECODER_DUMP:
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{
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int i;
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for (i = 0; i < 32; i += 16) {
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int j;
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printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i);
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for (j = 0; j < 16; ++j) {
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printk(" %02x",
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saa7111_read(client, i + j));
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}
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printk("\n");
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}
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}
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break;
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case DECODER_GET_CAPABILITIES:
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{
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struct video_decoder_capability *cap = arg;
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cap->flags = VIDEO_DECODER_PAL |
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VIDEO_DECODER_NTSC |
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VIDEO_DECODER_SECAM |
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VIDEO_DECODER_AUTO |
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VIDEO_DECODER_CCIR;
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cap->inputs = 8;
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cap->outputs = 1;
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}
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break;
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case DECODER_GET_STATUS:
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{
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int *iarg = arg;
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int status;
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int res;
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status = saa7111_read(client, 0x1f);
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dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client),
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status);
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res = 0;
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if ((status & (1 << 6)) == 0) {
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res |= DECODER_STATUS_GOOD;
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}
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switch (decoder->norm) {
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case VIDEO_MODE_NTSC:
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res |= DECODER_STATUS_NTSC;
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break;
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case VIDEO_MODE_PAL:
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res |= DECODER_STATUS_PAL;
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break;
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case VIDEO_MODE_SECAM:
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res |= DECODER_STATUS_SECAM;
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break;
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default:
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case VIDEO_MODE_AUTO:
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if ((status & (1 << 5)) != 0) {
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res |= DECODER_STATUS_NTSC;
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} else {
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res |= DECODER_STATUS_PAL;
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}
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break;
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}
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if ((status & (1 << 0)) != 0) {
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res |= DECODER_STATUS_COLOR;
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}
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*iarg = res;
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}
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break;
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case DECODER_SET_GPIO:
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{
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int *iarg = arg;
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if (0 != *iarg) {
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saa7111_write(client, 0x11,
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(decoder->reg[0x11] | 0x80));
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} else {
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saa7111_write(client, 0x11,
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(decoder->reg[0x11] & 0x7f));
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}
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break;
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}
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case DECODER_SET_VBI_BYPASS:
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{
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int *iarg = arg;
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if (0 != *iarg) {
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saa7111_write(client, 0x13,
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(decoder->reg[0x13] & 0xf0) | 0x0a);
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} else {
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saa7111_write(client, 0x13,
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(decoder->reg[0x13] & 0xf0));
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}
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break;
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}
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case DECODER_SET_NORM:
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{
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int *iarg = arg;
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switch (*iarg) {
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case VIDEO_MODE_NTSC:
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saa7111_write(client, 0x08,
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(decoder->reg[0x08] & 0x3f) | 0x40);
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saa7111_write(client, 0x0e,
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(decoder->reg[0x0e] & 0x8f));
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break;
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case VIDEO_MODE_PAL:
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saa7111_write(client, 0x08,
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(decoder->reg[0x08] & 0x3f) | 0x00);
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saa7111_write(client, 0x0e,
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(decoder->reg[0x0e] & 0x8f));
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break;
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case VIDEO_MODE_SECAM:
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saa7111_write(client, 0x08,
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(decoder->reg[0x08] & 0x3f) | 0x00);
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saa7111_write(client, 0x0e,
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(decoder->reg[0x0e] & 0x8f) | 0x50);
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break;
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case VIDEO_MODE_AUTO:
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saa7111_write(client, 0x08,
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(decoder->reg[0x08] & 0x3f) | 0x80);
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saa7111_write(client, 0x0e,
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(decoder->reg[0x0e] & 0x8f));
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break;
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default:
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return -EINVAL;
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}
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decoder->norm = *iarg;
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}
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break;
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case DECODER_SET_INPUT:
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{
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int *iarg = arg;
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if (*iarg < 0 || *iarg > 7) {
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return -EINVAL;
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}
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if (decoder->input != *iarg) {
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decoder->input = *iarg;
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/* select mode */
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saa7111_write(client, 0x02,
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(decoder->
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reg[0x02] & 0xf8) | decoder->input);
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/* bypass chrominance trap for modes 4..7 */
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saa7111_write(client, 0x09,
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(decoder->
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reg[0x09] & 0x7f) | ((decoder->
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input >
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3) ? 0x80 :
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0));
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}
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}
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break;
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case DECODER_SET_OUTPUT:
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{
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int *iarg = arg;
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/* not much choice of outputs */
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if (*iarg != 0) {
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return -EINVAL;
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}
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}
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break;
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case DECODER_ENABLE_OUTPUT:
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{
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int *iarg = arg;
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int enable = (*iarg != 0);
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if (decoder->enable != enable) {
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decoder->enable = enable;
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/* RJ: If output should be disabled (for
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* playing videos), we also need a open PLL.
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* The input is set to 0 (where no input
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* source is connected), although this
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* is not necessary.
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*
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* If output should be enabled, we have to
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* reverse the above.
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*/
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if (decoder->enable) {
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saa7111_write(client, 0x02,
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(decoder->
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reg[0x02] & 0xf8) |
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decoder->input);
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saa7111_write(client, 0x08,
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(decoder->reg[0x08] & 0xfb));
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saa7111_write(client, 0x11,
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(decoder->
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reg[0x11] & 0xf3) | 0x0c);
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} else {
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saa7111_write(client, 0x02,
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(decoder->reg[0x02] & 0xf8));
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saa7111_write(client, 0x08,
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(decoder->
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reg[0x08] & 0xfb) | 0x04);
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saa7111_write(client, 0x11,
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(decoder->reg[0x11] & 0xf3));
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}
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}
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}
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break;
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case DECODER_SET_PICTURE:
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{
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struct video_picture *pic = arg;
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if (decoder->bright != pic->brightness) {
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/* We want 0 to 255 we get 0-65535 */
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decoder->bright = pic->brightness;
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saa7111_write(client, 0x0a, decoder->bright >> 8);
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}
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if (decoder->contrast != pic->contrast) {
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/* We want 0 to 127 we get 0-65535 */
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decoder->contrast = pic->contrast;
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saa7111_write(client, 0x0b,
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decoder->contrast >> 9);
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}
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if (decoder->sat != pic->colour) {
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/* We want 0 to 127 we get 0-65535 */
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decoder->sat = pic->colour;
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saa7111_write(client, 0x0c, decoder->sat >> 9);
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}
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if (decoder->hue != pic->hue) {
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/* We want -128 to 127 we get 0-65535 */
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decoder->hue = pic->hue;
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saa7111_write(client, 0x0d,
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(decoder->hue - 32768) >> 8);
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}
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}
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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/*
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* Generic i2c probe
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* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
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*/
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static unsigned short normal_i2c[] = { I2C_SAA7111 >> 1, I2C_CLIENT_END };
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static unsigned short ignore = I2C_CLIENT_END;
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static struct i2c_client_address_data addr_data = {
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.normal_i2c = normal_i2c,
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.probe = &ignore,
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.ignore = &ignore,
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.force = &ignore,
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};
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static struct i2c_driver i2c_driver_saa7111;
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static int
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saa7111_detect_client (struct i2c_adapter *adapter,
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int address,
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int kind)
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{
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int i;
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struct i2c_client *client;
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struct saa7111 *decoder;
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struct video_decoder_init vdi;
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dprintk(1,
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KERN_INFO
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"saa7111.c: detecting saa7111 client on address 0x%x\n",
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address << 1);
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/* Check if the adapter supports the needed features */
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if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
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return 0;
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client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
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if (client == 0)
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return -ENOMEM;
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memset(client, 0, sizeof(struct i2c_client));
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client->addr = address;
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client->adapter = adapter;
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client->driver = &i2c_driver_saa7111;
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client->flags = I2C_CLIENT_ALLOW_USE;
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|
strlcpy(I2C_NAME(client), "saa7111", sizeof(I2C_NAME(client)));
|
|
|
|
decoder = kmalloc(sizeof(struct saa7111), GFP_KERNEL);
|
|
if (decoder == NULL) {
|
|
kfree(client);
|
|
return -ENOMEM;
|
|
}
|
|
memset(decoder, 0, sizeof(struct saa7111));
|
|
decoder->norm = VIDEO_MODE_NTSC;
|
|
decoder->input = 0;
|
|
decoder->enable = 1;
|
|
decoder->bright = 32768;
|
|
decoder->contrast = 32768;
|
|
decoder->hue = 32768;
|
|
decoder->sat = 32768;
|
|
i2c_set_clientdata(client, decoder);
|
|
|
|
i = i2c_attach_client(client);
|
|
if (i) {
|
|
kfree(client);
|
|
kfree(decoder);
|
|
return i;
|
|
}
|
|
|
|
vdi.data = saa7111_i2c_init;
|
|
vdi.len = sizeof(saa7111_i2c_init);
|
|
i = saa7111_init_decoder(client, &vdi);
|
|
if (i < 0) {
|
|
dprintk(1, KERN_ERR "%s_attach error: init status %d\n",
|
|
I2C_NAME(client), i);
|
|
} else {
|
|
dprintk(1,
|
|
KERN_INFO
|
|
"%s_attach: chip version %x at address 0x%x\n",
|
|
I2C_NAME(client), saa7111_read(client, 0x00) >> 4,
|
|
client->addr << 1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
saa7111_attach_adapter (struct i2c_adapter *adapter)
|
|
{
|
|
dprintk(1,
|
|
KERN_INFO
|
|
"saa7111.c: starting probe for adapter %s (0x%x)\n",
|
|
I2C_NAME(adapter), adapter->id);
|
|
return i2c_probe(adapter, &addr_data, &saa7111_detect_client);
|
|
}
|
|
|
|
static int
|
|
saa7111_detach_client (struct i2c_client *client)
|
|
{
|
|
struct saa7111 *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_saa7111 = {
|
|
.owner = THIS_MODULE,
|
|
.name = "saa7111",
|
|
|
|
.id = I2C_DRIVERID_SAA7111A,
|
|
.flags = I2C_DF_NOTIFY,
|
|
|
|
.attach_adapter = saa7111_attach_adapter,
|
|
.detach_client = saa7111_detach_client,
|
|
.command = saa7111_command,
|
|
};
|
|
|
|
static int __init
|
|
saa7111_init (void)
|
|
{
|
|
return i2c_add_driver(&i2c_driver_saa7111);
|
|
}
|
|
|
|
static void __exit
|
|
saa7111_exit (void)
|
|
{
|
|
i2c_del_driver(&i2c_driver_saa7111);
|
|
}
|
|
|
|
module_init(saa7111_init);
|
|
module_exit(saa7111_exit);
|