604 lines
15 KiB
C
604 lines
15 KiB
C
/*
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* saa7110 - Philips SAA7110(A) video decoder driver
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*
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* Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl>
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*
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* Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
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* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
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* - some corrections for Pinnacle Systems Inc. DC10plus card.
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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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* 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/types.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/wait.h>
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#include <asm/io.h>
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#include <asm/uaccess.h>
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MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
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MODULE_AUTHOR("Pauline Middelink");
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MODULE_LICENSE("GPL");
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#include <linux/i2c.h>
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#define I2C_NAME(s) (s)->name
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#include <linux/videodev.h>
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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, 0);
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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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#define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */
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#define SAA7110_MAX_OUTPUT 0 /* its a decoder only */
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#define I2C_SAA7110 0x9C /* or 0x9E */
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#define SAA7110_NR_REG 0x35
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struct saa7110 {
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u8 reg[SAA7110_NR_REG];
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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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wait_queue_head_t wq;
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};
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/* ----------------------------------------------------------------------- */
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/* I2C support functions */
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/* ----------------------------------------------------------------------- */
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static int
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saa7110_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 saa7110 *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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saa7110_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 = *data; /* first register to write to */
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/* Sanity check */
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if (reg + (len - 1) > SAA7110_NR_REG)
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return ret;
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/* the saa7110 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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struct saa7110 *decoder = i2c_get_clientdata(client);
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ret = i2c_master_send(client, data, len);
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/* Cache the written data */
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memcpy(decoder->reg + reg, data + 1, len - 1);
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} else {
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for (++data, --len; len; len--) {
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if ((ret = saa7110_write(client, reg++,
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*data++)) < 0)
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break;
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}
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}
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return ret;
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}
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static inline int
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saa7110_read (struct i2c_client *client)
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{
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return i2c_smbus_read_byte(client);
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}
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/* ----------------------------------------------------------------------- */
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/* SAA7110 functions */
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/* ----------------------------------------------------------------------- */
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#define FRESP_06H_COMPST 0x03 //0x13
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#define FRESP_06H_SVIDEO 0x83 //0xC0
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static int
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saa7110_selmux (struct i2c_client *client,
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int chan)
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{
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static const unsigned char modes[9][8] = {
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/* mode 0 */
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{FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
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0x44, 0x75, 0x16},
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/* mode 1 */
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{FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
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0x44, 0x75, 0x16},
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/* mode 2 */
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{FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
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0x60, 0xB5, 0x05},
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/* mode 3 */
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{FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
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0x60, 0xB5, 0x05},
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/* mode 4 */
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{FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
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0x60, 0xB5, 0x03},
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/* mode 5 */
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{FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
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0x60, 0xB5, 0x03},
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/* mode 6 */
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{FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
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0x44, 0x75, 0x12},
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/* mode 7 */
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{FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
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0x60, 0xB5, 0x14},
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/* mode 8 */
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{FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
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0x44, 0x75, 0x21}
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};
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struct saa7110 *decoder = i2c_get_clientdata(client);
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const unsigned char *ptr = modes[chan];
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saa7110_write(client, 0x06, ptr[0]); /* Luminance control */
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saa7110_write(client, 0x20, ptr[1]); /* Analog Control #1 */
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saa7110_write(client, 0x21, ptr[2]); /* Analog Control #2 */
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saa7110_write(client, 0x22, ptr[3]); /* Mixer Control #1 */
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saa7110_write(client, 0x2C, ptr[4]); /* Mixer Control #2 */
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saa7110_write(client, 0x30, ptr[5]); /* ADCs gain control */
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saa7110_write(client, 0x31, ptr[6]); /* Mixer Control #3 */
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saa7110_write(client, 0x21, ptr[7]); /* Analog Control #2 */
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decoder->input = chan;
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return 0;
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}
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static const unsigned char initseq[1 + SAA7110_NR_REG] = {
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0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
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/* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
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/* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
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/* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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/* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
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/* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
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/* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
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};
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static int
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determine_norm (struct i2c_client *client)
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{
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DEFINE_WAIT(wait);
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struct saa7110 *decoder = i2c_get_clientdata(client);
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int status;
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/* mode changed, start automatic detection */
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saa7110_write_block(client, initseq, sizeof(initseq));
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saa7110_selmux(client, decoder->input);
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prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
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schedule_timeout(HZ/4);
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finish_wait(&decoder->wq, &wait);
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status = saa7110_read(client);
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if (status & 0x40) {
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dprintk(1, KERN_INFO "%s: status=0x%02x (no signal)\n",
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I2C_NAME(client), status);
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return decoder->norm; // no change
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}
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if ((status & 3) == 0) {
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saa7110_write(client, 0x06, 0x83);
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if (status & 0x20) {
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dprintk(1,
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KERN_INFO
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"%s: status=0x%02x (NTSC/no color)\n",
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I2C_NAME(client), status);
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//saa7110_write(client,0x2E,0x81);
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return VIDEO_MODE_NTSC;
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}
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dprintk(1, KERN_INFO "%s: status=0x%02x (PAL/no color)\n",
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I2C_NAME(client), status);
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//saa7110_write(client,0x2E,0x9A);
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return VIDEO_MODE_PAL;
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}
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//saa7110_write(client,0x06,0x03);
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if (status & 0x20) { /* 60Hz */
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dprintk(1, KERN_INFO "%s: status=0x%02x (NTSC)\n",
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I2C_NAME(client), status);
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saa7110_write(client, 0x0D, 0x86);
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saa7110_write(client, 0x0F, 0x50);
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saa7110_write(client, 0x11, 0x2C);
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//saa7110_write(client,0x2E,0x81);
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return VIDEO_MODE_NTSC;
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}
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/* 50Hz -> PAL/SECAM */
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saa7110_write(client, 0x0D, 0x86);
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saa7110_write(client, 0x0F, 0x10);
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saa7110_write(client, 0x11, 0x59);
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//saa7110_write(client,0x2E,0x9A);
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prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
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schedule_timeout(HZ/4);
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finish_wait(&decoder->wq, &wait);
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status = saa7110_read(client);
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if ((status & 0x03) == 0x01) {
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dprintk(1, KERN_INFO "%s: status=0x%02x (SECAM)\n",
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I2C_NAME(client), status);
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saa7110_write(client, 0x0D, 0x87);
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return VIDEO_MODE_SECAM;
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}
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dprintk(1, KERN_INFO "%s: status=0x%02x (PAL)\n", I2C_NAME(client),
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status);
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return VIDEO_MODE_PAL;
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}
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static int
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saa7110_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 saa7110 *decoder = i2c_get_clientdata(client);
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int v;
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switch (cmd) {
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case 0:
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//saa7110_write_block(client, initseq, sizeof(initseq));
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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 *dc = arg;
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dc->flags =
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VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC |
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VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO;
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dc->inputs = SAA7110_MAX_INPUT;
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dc->outputs = SAA7110_MAX_OUTPUT;
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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 status;
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int res = 0;
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status = saa7110_read(client);
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dprintk(1, KERN_INFO "%s: status=0x%02x norm=%d\n",
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I2C_NAME(client), status, decoder->norm);
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if (!(status & 0x40))
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res |= DECODER_STATUS_GOOD;
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if (status & 0x03)
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res |= DECODER_STATUS_COLOR;
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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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}
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*(int *) arg = res;
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}
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break;
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case DECODER_SET_NORM:
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v = *(int *) arg;
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if (decoder->norm != v) {
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decoder->norm = v;
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//saa7110_write(client, 0x06, 0x03);
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switch (v) {
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case VIDEO_MODE_NTSC:
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saa7110_write(client, 0x0D, 0x86);
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saa7110_write(client, 0x0F, 0x50);
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saa7110_write(client, 0x11, 0x2C);
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//saa7110_write(client, 0x2E, 0x81);
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dprintk(1,
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KERN_INFO "%s: switched to NTSC\n",
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I2C_NAME(client));
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break;
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case VIDEO_MODE_PAL:
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saa7110_write(client, 0x0D, 0x86);
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saa7110_write(client, 0x0F, 0x10);
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saa7110_write(client, 0x11, 0x59);
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//saa7110_write(client, 0x2E, 0x9A);
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dprintk(1,
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KERN_INFO "%s: switched to PAL\n",
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I2C_NAME(client));
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break;
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case VIDEO_MODE_SECAM:
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saa7110_write(client, 0x0D, 0x87);
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saa7110_write(client, 0x0F, 0x10);
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saa7110_write(client, 0x11, 0x59);
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//saa7110_write(client, 0x2E, 0x9A);
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dprintk(1,
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KERN_INFO
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"%s: switched to SECAM\n",
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I2C_NAME(client));
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break;
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case VIDEO_MODE_AUTO:
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dprintk(1,
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KERN_INFO
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"%s: TV standard detection...\n",
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I2C_NAME(client));
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decoder->norm = determine_norm(client);
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*(int *) arg = decoder->norm;
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break;
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default:
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return -EPERM;
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}
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}
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break;
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case DECODER_SET_INPUT:
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v = *(int *) arg;
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if (v < 0 || v > SAA7110_MAX_INPUT) {
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dprintk(1,
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KERN_INFO "%s: input=%d not available\n",
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I2C_NAME(client), v);
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return -EINVAL;
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}
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if (decoder->input != v) {
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saa7110_selmux(client, v);
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dprintk(1, KERN_INFO "%s: switched to input=%d\n",
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I2C_NAME(client), v);
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}
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break;
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case DECODER_SET_OUTPUT:
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v = *(int *) arg;
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/* not much choice of outputs */
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if (v != 0)
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return -EINVAL;
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break;
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case DECODER_ENABLE_OUTPUT:
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v = *(int *) arg;
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if (decoder->enable != v) {
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decoder->enable = v;
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saa7110_write(client, 0x0E, v ? 0x18 : 0x80);
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dprintk(1, KERN_INFO "%s: YUV %s\n", I2C_NAME(client),
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v ? "on" : "off");
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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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saa7110_write(client, 0x19, 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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saa7110_write(client, 0x13,
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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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saa7110_write(client, 0x12, 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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saa7110_write(client, 0x07,
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(decoder->hue >> 8) - 128);
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}
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}
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break;
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case DECODER_DUMP:
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for (v = 0; v < SAA7110_NR_REG; v += 16) {
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int j;
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dprintk(1, KERN_DEBUG "%s: %02x:", I2C_NAME(client),
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v);
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for (j = 0; j < 16 && v + j < SAA7110_NR_REG; j++)
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dprintk(1, " %02x", decoder->reg[v + j]);
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dprintk(1, "\n");
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}
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break;
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default:
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dprintk(1, KERN_INFO "unknown saa7110_command??(%d)\n",
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cmd);
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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[] = {
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I2C_SAA7110 >> 1,
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(I2C_SAA7110 >> 1) + 1,
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I2C_CLIENT_END
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};
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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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};
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static struct i2c_driver i2c_driver_saa7110;
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static int
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saa7110_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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struct i2c_client *client;
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struct saa7110 *decoder;
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int rv;
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dprintk(1,
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KERN_INFO
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"saa7110.c: detecting saa7110 client on address 0x%x\n",
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address << 1);
|
|
|
|
/* Check if the adapter supports the needed features */
|
|
if (!i2c_check_functionality
|
|
(adapter,
|
|
I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
|
|
return 0;
|
|
|
|
client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
|
|
if (client == 0)
|
|
return -ENOMEM;
|
|
client->addr = address;
|
|
client->adapter = adapter;
|
|
client->driver = &i2c_driver_saa7110;
|
|
strlcpy(I2C_NAME(client), "saa7110", sizeof(I2C_NAME(client)));
|
|
|
|
decoder = kzalloc(sizeof(struct saa7110), GFP_KERNEL);
|
|
if (decoder == 0) {
|
|
kfree(client);
|
|
return -ENOMEM;
|
|
}
|
|
decoder->norm = VIDEO_MODE_PAL;
|
|
decoder->input = 0;
|
|
decoder->enable = 1;
|
|
decoder->bright = 32768;
|
|
decoder->contrast = 32768;
|
|
decoder->hue = 32768;
|
|
decoder->sat = 32768;
|
|
init_waitqueue_head(&decoder->wq);
|
|
i2c_set_clientdata(client, decoder);
|
|
|
|
rv = i2c_attach_client(client);
|
|
if (rv) {
|
|
kfree(client);
|
|
kfree(decoder);
|
|
return rv;
|
|
}
|
|
|
|
rv = saa7110_write_block(client, initseq, sizeof(initseq));
|
|
if (rv < 0)
|
|
dprintk(1, KERN_ERR "%s_attach: init status %d\n",
|
|
I2C_NAME(client), rv);
|
|
else {
|
|
int ver, status;
|
|
saa7110_write(client, 0x21, 0x10);
|
|
saa7110_write(client, 0x0e, 0x18);
|
|
saa7110_write(client, 0x0D, 0x04);
|
|
ver = saa7110_read(client);
|
|
saa7110_write(client, 0x0D, 0x06);
|
|
//mdelay(150);
|
|
status = saa7110_read(client);
|
|
dprintk(1,
|
|
KERN_INFO
|
|
"%s_attach: SAA7110A version %x at 0x%02x, status=0x%02x\n",
|
|
I2C_NAME(client), ver, client->addr << 1, status);
|
|
saa7110_write(client, 0x0D, 0x86);
|
|
saa7110_write(client, 0x0F, 0x10);
|
|
saa7110_write(client, 0x11, 0x59);
|
|
//saa7110_write(client, 0x2E, 0x9A);
|
|
}
|
|
|
|
//saa7110_selmux(client,0);
|
|
//determine_norm(client);
|
|
/* setup and implicit mode 0 select has been performed */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
saa7110_attach_adapter (struct i2c_adapter *adapter)
|
|
{
|
|
dprintk(1,
|
|
KERN_INFO
|
|
"saa7110.c: starting probe for adapter %s (0x%x)\n",
|
|
I2C_NAME(adapter), adapter->id);
|
|
return i2c_probe(adapter, &addr_data, &saa7110_detect_client);
|
|
}
|
|
|
|
static int
|
|
saa7110_detach_client (struct i2c_client *client)
|
|
{
|
|
struct saa7110 *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_saa7110 = {
|
|
.driver = {
|
|
.name = "saa7110",
|
|
},
|
|
|
|
.id = I2C_DRIVERID_SAA7110,
|
|
|
|
.attach_adapter = saa7110_attach_adapter,
|
|
.detach_client = saa7110_detach_client,
|
|
.command = saa7110_command,
|
|
};
|
|
|
|
static int __init
|
|
saa7110_init (void)
|
|
{
|
|
return i2c_add_driver(&i2c_driver_saa7110);
|
|
}
|
|
|
|
static void __exit
|
|
saa7110_exit (void)
|
|
{
|
|
i2c_del_driver(&i2c_driver_saa7110);
|
|
}
|
|
|
|
module_init(saa7110_init);
|
|
module_exit(saa7110_exit);
|