809 lines
18 KiB
C
809 lines
18 KiB
C
/*
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* saa7191.c - Philips SAA7191 video decoder driver
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*
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* Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
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* Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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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/init.h>
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#include <linux/kernel.h>
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#include <linux/major.h>
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/videodev.h>
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#include <linux/video_decoder.h>
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#include <linux/i2c.h>
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#include "saa7191.h"
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#define SAA7191_MODULE_VERSION "0.0.5"
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MODULE_DESCRIPTION("Philips SAA7191 video decoder driver");
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MODULE_VERSION(SAA7191_MODULE_VERSION);
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MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
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MODULE_LICENSE("GPL");
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// #define SAA7191_DEBUG
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#ifdef SAA7191_DEBUG
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#define dprintk(x...) printk("SAA7191: " x);
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#else
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#define dprintk(x...)
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#endif
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#define SAA7191_SYNC_COUNT 30
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#define SAA7191_SYNC_DELAY 100 /* milliseconds */
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struct saa7191 {
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struct i2c_client *client;
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/* the register values are stored here as the actual
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* I2C-registers are write-only */
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u8 reg[25];
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int input;
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int norm;
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};
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static struct i2c_driver i2c_driver_saa7191;
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static const u8 initseq[] = {
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0, /* Subaddress */
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0x50, /* (0x50) SAA7191_REG_IDEL */
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/* 50 Hz signal timing */
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0x30, /* (0x30) SAA7191_REG_HSYB */
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0x00, /* (0x00) SAA7191_REG_HSYS */
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0xe8, /* (0xe8) SAA7191_REG_HCLB */
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0xb6, /* (0xb6) SAA7191_REG_HCLS */
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0xf4, /* (0xf4) SAA7191_REG_HPHI */
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/* control */
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SAA7191_LUMA_APER_1, /* (0x01) SAA7191_REG_LUMA - CVBS mode */
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0x00, /* (0x00) SAA7191_REG_HUEC */
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0xf8, /* (0xf8) SAA7191_REG_CKTQ */
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0xf8, /* (0xf8) SAA7191_REG_CKTS */
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0x90, /* (0x90) SAA7191_REG_PLSE */
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0x90, /* (0x90) SAA7191_REG_SESE */
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0x00, /* (0x00) SAA7191_REG_GAIN */
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SAA7191_STDC_NFEN | SAA7191_STDC_HRMV, /* (0x0c) SAA7191_REG_STDC
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* - not SECAM,
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* slow time constant */
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SAA7191_IOCK_OEDC | SAA7191_IOCK_OEHS | SAA7191_IOCK_OEVS
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| SAA7191_IOCK_OEDY, /* (0x78) SAA7191_REG_IOCK
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* - chroma from CVBS, GPSW1 & 2 off */
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SAA7191_CTL3_AUFD | SAA7191_CTL3_SCEN | SAA7191_CTL3_OFTS
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| SAA7191_CTL3_YDEL0, /* (0x99) SAA7191_REG_CTL3
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* - automatic field detection */
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0x00, /* (0x00) SAA7191_REG_CTL4 */
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0x2c, /* (0x2c) SAA7191_REG_CHCV - PAL nominal value */
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0x00, /* unused */
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0x00, /* unused */
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/* 60 Hz signal timing */
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0x34, /* (0x34) SAA7191_REG_HS6B */
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0x0a, /* (0x0a) SAA7191_REG_HS6S */
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0xf4, /* (0xf4) SAA7191_REG_HC6B */
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0xce, /* (0xce) SAA7191_REG_HC6S */
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0xf4, /* (0xf4) SAA7191_REG_HP6I */
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};
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/* SAA7191 register handling */
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static u8 saa7191_read_reg(struct i2c_client *client,
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u8 reg)
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{
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return ((struct saa7191 *)i2c_get_clientdata(client))->reg[reg];
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}
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static int saa7191_read_status(struct i2c_client *client,
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u8 *value)
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{
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int ret;
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ret = i2c_master_recv(client, value, 1);
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if (ret < 0) {
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printk(KERN_ERR "SAA7191: saa7191_read_status(): read failed\n");
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return ret;
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}
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return 0;
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}
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static int saa7191_write_reg(struct i2c_client *client, u8 reg,
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u8 value)
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{
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((struct saa7191 *)i2c_get_clientdata(client))->reg[reg] = value;
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return i2c_smbus_write_byte_data(client, reg, value);
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}
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/* the first byte of data must be the first subaddress number (register) */
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static int saa7191_write_block(struct i2c_client *client,
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u8 length, u8 *data)
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{
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int i;
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int ret;
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struct saa7191 *decoder = (struct saa7191 *)i2c_get_clientdata(client);
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for (i = 0; i < (length - 1); i++) {
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decoder->reg[data[0] + i] = data[i + 1];
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}
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ret = i2c_master_send(client, data, length);
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if (ret < 0) {
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printk(KERN_ERR "SAA7191: saa7191_write_block(): "
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"write failed\n");
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return ret;
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}
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return 0;
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}
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/* Helper functions */
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static int saa7191_set_input(struct i2c_client *client, int input)
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{
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struct saa7191 *decoder = i2c_get_clientdata(client);
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u8 luma = saa7191_read_reg(client, SAA7191_REG_LUMA);
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u8 iock = saa7191_read_reg(client, SAA7191_REG_IOCK);
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int err;
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switch (input) {
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case SAA7191_INPUT_COMPOSITE: /* Set Composite input */
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iock &= ~(SAA7191_IOCK_CHRS | SAA7191_IOCK_GPSW1
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| SAA7191_IOCK_GPSW2);
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/* Chrominance trap active */
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luma &= ~SAA7191_LUMA_BYPS;
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break;
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case SAA7191_INPUT_SVIDEO: /* Set S-Video input */
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iock |= SAA7191_IOCK_CHRS | SAA7191_IOCK_GPSW2;
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/* Chrominance trap bypassed */
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luma |= SAA7191_LUMA_BYPS;
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break;
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default:
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return -EINVAL;
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}
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err = saa7191_write_reg(client, SAA7191_REG_LUMA, luma);
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if (err)
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return -EIO;
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err = saa7191_write_reg(client, SAA7191_REG_IOCK, iock);
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if (err)
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return -EIO;
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decoder->input = input;
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return 0;
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}
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static int saa7191_set_norm(struct i2c_client *client, int norm)
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{
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struct saa7191 *decoder = i2c_get_clientdata(client);
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u8 stdc = saa7191_read_reg(client, SAA7191_REG_STDC);
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u8 ctl3 = saa7191_read_reg(client, SAA7191_REG_CTL3);
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u8 chcv = saa7191_read_reg(client, SAA7191_REG_CHCV);
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int err;
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switch(norm) {
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case SAA7191_NORM_PAL:
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stdc &= ~SAA7191_STDC_SECS;
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ctl3 &= ~(SAA7191_CTL3_AUFD | SAA7191_CTL3_FSEL);
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chcv = SAA7191_CHCV_PAL;
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break;
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case SAA7191_NORM_NTSC:
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stdc &= ~SAA7191_STDC_SECS;
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ctl3 &= ~SAA7191_CTL3_AUFD;
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ctl3 |= SAA7191_CTL3_FSEL;
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chcv = SAA7191_CHCV_NTSC;
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break;
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case SAA7191_NORM_SECAM:
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stdc |= SAA7191_STDC_SECS;
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ctl3 &= ~(SAA7191_CTL3_AUFD | SAA7191_CTL3_FSEL);
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chcv = SAA7191_CHCV_PAL;
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break;
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default:
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return -EINVAL;
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}
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err = saa7191_write_reg(client, SAA7191_REG_CTL3, ctl3);
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if (err)
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return -EIO;
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err = saa7191_write_reg(client, SAA7191_REG_STDC, stdc);
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if (err)
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return -EIO;
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err = saa7191_write_reg(client, SAA7191_REG_CHCV, chcv);
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if (err)
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return -EIO;
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decoder->norm = norm;
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dprintk("ctl3: %02x stdc: %02x chcv: %02x\n", ctl3,
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stdc, chcv);
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dprintk("norm: %d\n", norm);
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return 0;
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}
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static int saa7191_wait_for_signal(struct i2c_client *client, u8 *status)
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{
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int i = 0;
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dprintk("Checking for signal...\n");
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for (i = 0; i < SAA7191_SYNC_COUNT; i++) {
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if (saa7191_read_status(client, status))
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return -EIO;
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if (((*status) & SAA7191_STATUS_HLCK) == 0) {
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dprintk("Signal found\n");
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return 0;
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}
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msleep(SAA7191_SYNC_DELAY);
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}
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dprintk("No signal\n");
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return -EBUSY;
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}
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static int saa7191_autodetect_norm_extended(struct i2c_client *client)
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{
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u8 stdc = saa7191_read_reg(client, SAA7191_REG_STDC);
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u8 ctl3 = saa7191_read_reg(client, SAA7191_REG_CTL3);
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u8 status;
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int err = 0;
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dprintk("SAA7191 extended signal auto-detection...\n");
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stdc &= ~SAA7191_STDC_SECS;
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ctl3 &= ~(SAA7191_CTL3_FSEL);
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err = saa7191_write_reg(client, SAA7191_REG_STDC, stdc);
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if (err) {
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err = -EIO;
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goto out;
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}
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err = saa7191_write_reg(client, SAA7191_REG_CTL3, ctl3);
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if (err) {
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err = -EIO;
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goto out;
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}
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ctl3 |= SAA7191_CTL3_AUFD;
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err = saa7191_write_reg(client, SAA7191_REG_CTL3, ctl3);
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if (err) {
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err = -EIO;
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goto out;
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}
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msleep(SAA7191_SYNC_DELAY);
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err = saa7191_wait_for_signal(client, &status);
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if (err)
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goto out;
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if (status & SAA7191_STATUS_FIDT) {
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/* 60Hz signal -> NTSC */
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dprintk("60Hz signal: NTSC\n");
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return saa7191_set_norm(client, SAA7191_NORM_NTSC);
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}
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/* 50Hz signal */
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dprintk("50Hz signal: Trying PAL...\n");
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/* try PAL first */
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err = saa7191_set_norm(client, SAA7191_NORM_PAL);
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if (err)
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goto out;
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msleep(SAA7191_SYNC_DELAY);
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err = saa7191_wait_for_signal(client, &status);
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if (err)
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goto out;
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/* not 50Hz ? */
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if (status & SAA7191_STATUS_FIDT) {
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dprintk("No 50Hz signal\n");
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err = -EAGAIN;
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goto out;
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}
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if (status & SAA7191_STATUS_CODE) {
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dprintk("PAL\n");
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return 0;
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}
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dprintk("No color detected with PAL - Trying SECAM...\n");
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/* no color detected ? -> try SECAM */
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err = saa7191_set_norm(client,
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SAA7191_NORM_SECAM);
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if (err)
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goto out;
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msleep(SAA7191_SYNC_DELAY);
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err = saa7191_wait_for_signal(client, &status);
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if (err)
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goto out;
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/* not 50Hz ? */
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if (status & SAA7191_STATUS_FIDT) {
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dprintk("No 50Hz signal\n");
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err = -EAGAIN;
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goto out;
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}
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if (status & SAA7191_STATUS_CODE) {
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/* Color detected -> SECAM */
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dprintk("SECAM\n");
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return 0;
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}
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dprintk("No color detected with SECAM - Going back to PAL.\n");
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/* still no color detected ?
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* -> set norm back to PAL */
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err = saa7191_set_norm(client,
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SAA7191_NORM_PAL);
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if (err)
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goto out;
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out:
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ctl3 = saa7191_read_reg(client, SAA7191_REG_CTL3);
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if (ctl3 & SAA7191_CTL3_AUFD) {
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ctl3 &= ~(SAA7191_CTL3_AUFD);
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err = saa7191_write_reg(client, SAA7191_REG_CTL3, ctl3);
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if (err) {
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err = -EIO;
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}
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}
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return err;
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}
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static int saa7191_autodetect_norm(struct i2c_client *client)
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{
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u8 status;
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dprintk("SAA7191 signal auto-detection...\n");
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dprintk("Reading status...\n");
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if (saa7191_read_status(client, &status))
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return -EIO;
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dprintk("Checking for signal...\n");
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/* no signal ? */
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if (status & SAA7191_STATUS_HLCK) {
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dprintk("No signal\n");
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return -EBUSY;
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}
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dprintk("Signal found\n");
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if (status & SAA7191_STATUS_FIDT) {
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/* 60hz signal -> NTSC */
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dprintk("NTSC\n");
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return saa7191_set_norm(client, SAA7191_NORM_NTSC);
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} else {
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/* 50hz signal -> PAL */
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dprintk("PAL\n");
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return saa7191_set_norm(client, SAA7191_NORM_PAL);
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}
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}
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static int saa7191_get_control(struct i2c_client *client,
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struct saa7191_control *ctrl)
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{
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u8 reg;
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int ret = 0;
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switch (ctrl->type) {
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case SAA7191_CONTROL_BANDPASS:
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case SAA7191_CONTROL_BANDPASS_WEIGHT:
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case SAA7191_CONTROL_CORING:
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reg = saa7191_read_reg(client, SAA7191_REG_LUMA);
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switch (ctrl->type) {
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case SAA7191_CONTROL_BANDPASS:
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ctrl->value = ((s32)reg & SAA7191_LUMA_BPSS_MASK)
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>> SAA7191_LUMA_BPSS_SHIFT;
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break;
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case SAA7191_CONTROL_BANDPASS_WEIGHT:
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ctrl->value = ((s32)reg & SAA7191_LUMA_APER_MASK)
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>> SAA7191_LUMA_APER_SHIFT;
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break;
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case SAA7191_CONTROL_CORING:
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ctrl->value = ((s32)reg & SAA7191_LUMA_CORI_MASK)
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>> SAA7191_LUMA_CORI_SHIFT;
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break;
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}
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break;
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case SAA7191_CONTROL_FORCE_COLOUR:
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case SAA7191_CONTROL_CHROMA_GAIN:
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reg = saa7191_read_reg(client, SAA7191_REG_GAIN);
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if (ctrl->type == SAA7191_CONTROL_FORCE_COLOUR)
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ctrl->value = ((s32)reg & SAA7191_GAIN_COLO) ? 1 : 0;
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else
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ctrl->value = ((s32)reg & SAA7191_GAIN_LFIS_MASK)
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>> SAA7191_GAIN_LFIS_SHIFT;
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break;
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case SAA7191_CONTROL_HUE:
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reg = saa7191_read_reg(client, SAA7191_REG_HUEC);
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if (reg < 0x80)
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reg += 0x80;
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else
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reg -= 0x80;
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ctrl->value = (s32)reg;
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break;
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case SAA7191_CONTROL_VTRC:
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reg = saa7191_read_reg(client, SAA7191_REG_STDC);
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ctrl->value = ((s32)reg & SAA7191_STDC_VTRC) ? 1 : 0;
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break;
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case SAA7191_CONTROL_LUMA_DELAY:
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reg = saa7191_read_reg(client, SAA7191_REG_CTL3);
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ctrl->value = ((s32)reg & SAA7191_CTL3_YDEL_MASK)
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>> SAA7191_CTL3_YDEL_SHIFT;
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if (ctrl->value >= 4)
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ctrl->value -= 8;
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break;
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case SAA7191_CONTROL_VNR:
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reg = saa7191_read_reg(client, SAA7191_REG_CTL4);
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ctrl->value = ((s32)reg & SAA7191_CTL4_VNOI_MASK)
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>> SAA7191_CTL4_VNOI_SHIFT;
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break;
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default:
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ret = -EINVAL;
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}
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return ret;
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}
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static int saa7191_set_control(struct i2c_client *client,
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struct saa7191_control *ctrl)
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{
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u8 reg;
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int ret = 0;
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switch (ctrl->type) {
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case SAA7191_CONTROL_BANDPASS:
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case SAA7191_CONTROL_BANDPASS_WEIGHT:
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case SAA7191_CONTROL_CORING:
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reg = saa7191_read_reg(client, SAA7191_REG_LUMA);
|
|
switch (ctrl->type) {
|
|
case SAA7191_CONTROL_BANDPASS:
|
|
reg &= ~SAA7191_LUMA_BPSS_MASK;
|
|
reg |= (ctrl->value << SAA7191_LUMA_BPSS_SHIFT)
|
|
& SAA7191_LUMA_BPSS_MASK;
|
|
break;
|
|
case SAA7191_CONTROL_BANDPASS_WEIGHT:
|
|
reg &= ~SAA7191_LUMA_APER_MASK;
|
|
reg |= (ctrl->value << SAA7191_LUMA_APER_SHIFT)
|
|
& SAA7191_LUMA_APER_MASK;
|
|
break;
|
|
case SAA7191_CONTROL_CORING:
|
|
reg &= ~SAA7191_LUMA_CORI_MASK;
|
|
reg |= (ctrl->value << SAA7191_LUMA_CORI_SHIFT)
|
|
& SAA7191_LUMA_CORI_MASK;
|
|
break;
|
|
}
|
|
ret = saa7191_write_reg(client, SAA7191_REG_LUMA, reg);
|
|
break;
|
|
case SAA7191_CONTROL_FORCE_COLOUR:
|
|
case SAA7191_CONTROL_CHROMA_GAIN:
|
|
reg = saa7191_read_reg(client, SAA7191_REG_GAIN);
|
|
if (ctrl->type == SAA7191_CONTROL_FORCE_COLOUR) {
|
|
if (ctrl->value)
|
|
reg |= SAA7191_GAIN_COLO;
|
|
else
|
|
reg &= ~SAA7191_GAIN_COLO;
|
|
} else {
|
|
reg &= ~SAA7191_GAIN_LFIS_MASK;
|
|
reg |= (ctrl->value << SAA7191_GAIN_LFIS_SHIFT)
|
|
& SAA7191_GAIN_LFIS_MASK;
|
|
}
|
|
ret = saa7191_write_reg(client, SAA7191_REG_GAIN, reg);
|
|
break;
|
|
case SAA7191_CONTROL_HUE:
|
|
reg = ctrl->value & 0xff;
|
|
if (reg < 0x80)
|
|
reg += 0x80;
|
|
else
|
|
reg -= 0x80;
|
|
ret = saa7191_write_reg(client, SAA7191_REG_HUEC, reg);
|
|
break;
|
|
case SAA7191_CONTROL_VTRC:
|
|
reg = saa7191_read_reg(client, SAA7191_REG_STDC);
|
|
if (ctrl->value)
|
|
reg |= SAA7191_STDC_VTRC;
|
|
else
|
|
reg &= ~SAA7191_STDC_VTRC;
|
|
ret = saa7191_write_reg(client, SAA7191_REG_STDC, reg);
|
|
break;
|
|
case SAA7191_CONTROL_LUMA_DELAY: {
|
|
s32 value = ctrl->value;
|
|
if (value < 0)
|
|
value += 8;
|
|
reg = saa7191_read_reg(client, SAA7191_REG_CTL3);
|
|
reg &= ~SAA7191_CTL3_YDEL_MASK;
|
|
reg |= (value << SAA7191_CTL3_YDEL_SHIFT)
|
|
& SAA7191_CTL3_YDEL_MASK;
|
|
ret = saa7191_write_reg(client, SAA7191_REG_CTL3, reg);
|
|
break;
|
|
}
|
|
case SAA7191_CONTROL_VNR:
|
|
reg = saa7191_read_reg(client, SAA7191_REG_CTL4);
|
|
reg &= ~SAA7191_CTL4_VNOI_MASK;
|
|
reg |= (ctrl->value << SAA7191_CTL4_VNOI_SHIFT)
|
|
& SAA7191_CTL4_VNOI_MASK;
|
|
ret = saa7191_write_reg(client, SAA7191_REG_CTL4, reg);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* I2C-interface */
|
|
|
|
static int saa7191_attach(struct i2c_adapter *adap, int addr, int kind)
|
|
{
|
|
int err = 0;
|
|
struct saa7191 *decoder;
|
|
struct i2c_client *client;
|
|
|
|
printk(KERN_INFO "Philips SAA7191 driver version %s\n",
|
|
SAA7191_MODULE_VERSION);
|
|
|
|
client = kzalloc(sizeof(*client), GFP_KERNEL);
|
|
if (!client)
|
|
return -ENOMEM;
|
|
decoder = kzalloc(sizeof(*decoder), GFP_KERNEL);
|
|
if (!decoder) {
|
|
err = -ENOMEM;
|
|
goto out_free_client;
|
|
}
|
|
|
|
client->addr = addr;
|
|
client->adapter = adap;
|
|
client->driver = &i2c_driver_saa7191;
|
|
client->flags = 0;
|
|
strcpy(client->name, "saa7191 client");
|
|
i2c_set_clientdata(client, decoder);
|
|
|
|
decoder->client = client;
|
|
|
|
err = i2c_attach_client(client);
|
|
if (err)
|
|
goto out_free_decoder;
|
|
|
|
err = saa7191_write_block(client, sizeof(initseq), (u8 *)initseq);
|
|
if (err) {
|
|
printk(KERN_ERR "SAA7191 initialization failed\n");
|
|
goto out_detach_client;
|
|
}
|
|
|
|
printk(KERN_INFO "SAA7191 initialized\n");
|
|
|
|
decoder->input = SAA7191_INPUT_COMPOSITE;
|
|
decoder->norm = SAA7191_NORM_PAL;
|
|
|
|
err = saa7191_autodetect_norm(client);
|
|
if (err && (err != -EBUSY)) {
|
|
printk(KERN_ERR "SAA7191: Signal auto-detection failed\n");
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_detach_client:
|
|
i2c_detach_client(client);
|
|
out_free_decoder:
|
|
kfree(decoder);
|
|
out_free_client:
|
|
kfree(client);
|
|
return err;
|
|
}
|
|
|
|
static int saa7191_probe(struct i2c_adapter *adap)
|
|
{
|
|
/* Always connected to VINO */
|
|
if (adap->id == I2C_HW_SGI_VINO)
|
|
return saa7191_attach(adap, SAA7191_ADDR, 0);
|
|
/* Feel free to add probe here :-) */
|
|
return -ENODEV;
|
|
}
|
|
|
|
static int saa7191_detach(struct i2c_client *client)
|
|
{
|
|
struct saa7191 *decoder = i2c_get_clientdata(client);
|
|
|
|
i2c_detach_client(client);
|
|
kfree(decoder);
|
|
kfree(client);
|
|
return 0;
|
|
}
|
|
|
|
static int saa7191_command(struct i2c_client *client, unsigned int cmd,
|
|
void *arg)
|
|
{
|
|
struct saa7191 *decoder = i2c_get_clientdata(client);
|
|
|
|
switch (cmd) {
|
|
case DECODER_GET_CAPABILITIES: {
|
|
struct video_decoder_capability *cap = arg;
|
|
|
|
cap->flags = VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC |
|
|
VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO;
|
|
cap->inputs = (client->adapter->id == I2C_HW_SGI_VINO) ? 2 : 1;
|
|
cap->outputs = 1;
|
|
break;
|
|
}
|
|
case DECODER_GET_STATUS: {
|
|
int *iarg = arg;
|
|
u8 status;
|
|
int res = 0;
|
|
|
|
if (saa7191_read_status(client, &status)) {
|
|
return -EIO;
|
|
}
|
|
if ((status & SAA7191_STATUS_HLCK) == 0)
|
|
res |= DECODER_STATUS_GOOD;
|
|
if (status & SAA7191_STATUS_CODE)
|
|
res |= DECODER_STATUS_COLOR;
|
|
switch (decoder->norm) {
|
|
case SAA7191_NORM_NTSC:
|
|
res |= DECODER_STATUS_NTSC;
|
|
break;
|
|
case SAA7191_NORM_PAL:
|
|
res |= DECODER_STATUS_PAL;
|
|
break;
|
|
case SAA7191_NORM_SECAM:
|
|
res |= DECODER_STATUS_SECAM;
|
|
break;
|
|
case SAA7191_NORM_AUTO:
|
|
default:
|
|
if (status & SAA7191_STATUS_FIDT)
|
|
res |= DECODER_STATUS_NTSC;
|
|
else
|
|
res |= DECODER_STATUS_PAL;
|
|
break;
|
|
}
|
|
*iarg = res;
|
|
break;
|
|
}
|
|
case DECODER_SET_NORM: {
|
|
int *iarg = arg;
|
|
|
|
switch (*iarg) {
|
|
case VIDEO_MODE_AUTO:
|
|
return saa7191_autodetect_norm(client);
|
|
case VIDEO_MODE_PAL:
|
|
return saa7191_set_norm(client, SAA7191_NORM_PAL);
|
|
case VIDEO_MODE_NTSC:
|
|
return saa7191_set_norm(client, SAA7191_NORM_NTSC);
|
|
case VIDEO_MODE_SECAM:
|
|
return saa7191_set_norm(client, SAA7191_NORM_SECAM);
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
}
|
|
case DECODER_SET_INPUT: {
|
|
int *iarg = arg;
|
|
|
|
switch (client->adapter->id) {
|
|
case I2C_HW_SGI_VINO:
|
|
return saa7191_set_input(client, *iarg);
|
|
default:
|
|
if (*iarg != 0)
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
}
|
|
case DECODER_SET_OUTPUT: {
|
|
int *iarg = arg;
|
|
|
|
/* not much choice of outputs */
|
|
if (*iarg != 0)
|
|
return -EINVAL;
|
|
break;
|
|
}
|
|
case DECODER_ENABLE_OUTPUT: {
|
|
/* Always enabled */
|
|
break;
|
|
}
|
|
case DECODER_SET_PICTURE: {
|
|
struct video_picture *pic = arg;
|
|
unsigned val;
|
|
int err;
|
|
|
|
val = (pic->hue >> 8) - 0x80;
|
|
|
|
err = saa7191_write_reg(client, SAA7191_REG_HUEC, val);
|
|
if (err)
|
|
return -EIO;
|
|
|
|
break;
|
|
}
|
|
case DECODER_SAA7191_GET_STATUS: {
|
|
struct saa7191_status *status = arg;
|
|
u8 status_reg;
|
|
|
|
if (saa7191_read_status(client, &status_reg))
|
|
return -EIO;
|
|
|
|
status->signal = ((status_reg & SAA7191_STATUS_HLCK) == 0)
|
|
? 1 : 0;
|
|
status->signal_60hz = (status_reg & SAA7191_STATUS_FIDT)
|
|
? 1 : 0;
|
|
status->color = (status_reg & SAA7191_STATUS_CODE) ? 1 : 0;
|
|
|
|
status->input = decoder->input;
|
|
status->norm = decoder->norm;
|
|
|
|
break;
|
|
}
|
|
case DECODER_SAA7191_SET_NORM: {
|
|
int *norm = arg;
|
|
|
|
switch (*norm) {
|
|
case SAA7191_NORM_AUTO:
|
|
return saa7191_autodetect_norm(client);
|
|
case SAA7191_NORM_AUTO_EXT:
|
|
return saa7191_autodetect_norm_extended(client);
|
|
default:
|
|
return saa7191_set_norm(client, *norm);
|
|
}
|
|
}
|
|
case DECODER_SAA7191_GET_CONTROL: {
|
|
return saa7191_get_control(client, arg);
|
|
}
|
|
case DECODER_SAA7191_SET_CONTROL: {
|
|
return saa7191_set_control(client, arg);
|
|
}
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct i2c_driver i2c_driver_saa7191 = {
|
|
.driver = {
|
|
.name = "saa7191",
|
|
},
|
|
.id = I2C_DRIVERID_SAA7191,
|
|
.attach_adapter = saa7191_probe,
|
|
.detach_client = saa7191_detach,
|
|
.command = saa7191_command
|
|
};
|
|
|
|
static int saa7191_init(void)
|
|
{
|
|
return i2c_add_driver(&i2c_driver_saa7191);
|
|
}
|
|
|
|
static void saa7191_exit(void)
|
|
{
|
|
i2c_del_driver(&i2c_driver_saa7191);
|
|
}
|
|
|
|
module_init(saa7191_init);
|
|
module_exit(saa7191_exit);
|