587 строки
14 KiB
C
587 строки
14 KiB
C
/*
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* saa711x - Philips SAA711x video decoder driver version 0.0.1
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*
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* To do: Now, it handles only saa7113/7114. Should be improved to
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* handle all Philips saa711x devices.
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*
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* Based on saa7113 driver from Dave Perks <dperks@ibm.net>
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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 <linux/types.h>
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#include <asm/uaccess.h>
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#include <linux/videodev.h>
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MODULE_DESCRIPTION("Philips SAA711x video decoder driver");
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MODULE_AUTHOR("Dave Perks, Jose Ignacio Gijon, Joerg Heckenbach, Mark McClelland, Dwaine Garden");
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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/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, " Set the default Debug level. Default: 0 (Off) - (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 saa711x {
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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_SAA7113 0x4A
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#define I2C_SAA7114 0x42
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/* ----------------------------------------------------------------------- */
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static inline int
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saa711x_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 saa711x *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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saa711x_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 saa711x 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 saa711x *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 = saa711x_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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saa711x_init_decoder (struct i2c_client *client,
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struct video_decoder_init *init)
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{
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return saa711x_write_block(client, init->data, init->len);
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}
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static inline int
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saa711x_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 saa711x_i2c_init[] = {
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0x00, 0x00, /* PH711x_CHIP_VERSION 00 - ID byte */
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0x01, 0x08, /* PH711x_INCREMENT_DELAY - (1) (1) (1) (1) IDEL3 IDEL2 IDELL1 IDEL0 */
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0x02, 0xc0, /* PH711x_ANALOG_INPUT_CONTR_1 - FUSE1 FUSE0 GUDL1 GUDL0 MODE3 MODE2 MODE1 MODE0 */
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0x03, 0x23, /* PH711x_ANALOG_INPUT_CONTR_2 - (1) HLNRS VBSL WPOFF HOLDG GAFIX GAI28 GAI18 */
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0x04, 0x00, /* PH711x_ANALOG_INPUT_CONTR_3 - GAI17 GAI16 GAI15 GAI14 GAI13 GAI12 GAI11 GAI10 */
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0x05, 0x00, /* PH711x_ANALOG_INPUT_CONTR_4 - GAI27 GAI26 GAI25 GAI24 GAI23 GAI22 GAI21 GAI20 */
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0x06, 0xeb, /* PH711x_HORIZONTAL_SYNC_START - HSB7 HSB6 HSB5 HSB4 HSB3 HSB2 HSB1 HSB0 */
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0x07, 0xe0, /* PH711x_HORIZONTAL_SYNC_STOP - HSS7 HSS6 HSS5 HSS4 HSS3 HSS2 HSS1 HSS0 */
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0x08, 0x88, /* PH711x_SYNC_CONTROL - AUFD FSEL FOET HTC1 HTC0 HPLL VNOI1 VNOI0 */
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0x09, 0x00, /* PH711x_LUMINANCE_CONTROL - BYPS PREF BPSS1 BPSS0 VBLB UPTCV APER1 APER0 */
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0x0a, 0x80, /* PH711x_LUMINANCE_BRIGHTNESS - BRIG7 BRIG6 BRIG5 BRIG4 BRIG3 BRIG2 BRIG1 BRIG0 */
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0x0b, 0x47, /* PH711x_LUMINANCE_CONTRAST - CONT7 CONT6 CONT5 CONT4 CONT3 CONT2 CONT1 CONT0 */
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0x0c, 0x40, /* PH711x_CHROMA_SATURATION - SATN7 SATN6 SATN5 SATN4 SATN3 SATN2 SATN1 SATN0 */
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0x0d, 0x00, /* PH711x_CHROMA_HUE_CONTROL - HUEC7 HUEC6 HUEC5 HUEC4 HUEC3 HUEC2 HUEC1 HUEC0 */
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0x0e, 0x01, /* PH711x_CHROMA_CONTROL - CDTO CSTD2 CSTD1 CSTD0 DCCF FCTC CHBW1 CHBW0 */
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0x0f, 0xaa, /* PH711x_CHROMA_GAIN_CONTROL - ACGC CGAIN6 CGAIN5 CGAIN4 CGAIN3 CGAIN2 CGAIN1 CGAIN0 */
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0x10, 0x00, /* PH711x_FORMAT_DELAY_CONTROL - OFTS1 OFTS0 HDEL1 HDEL0 VRLN YDEL2 YDEL1 YDEL0 */
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0x11, 0x1C, /* PH711x_OUTPUT_CONTROL_1 - GPSW1 CM99 GPSW0 HLSEL OEYC OERT VIPB COLO */
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0x12, 0x01, /* PH711x_OUTPUT_CONTROL_2 - RTSE13 RTSE12 RTSE11 RTSE10 RTSE03 RTSE02 RTSE01 RTSE00 */
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0x13, 0x00, /* PH711x_OUTPUT_CONTROL_3 - ADLSB (1) (1) OLDSB FIDP (1) AOSL1 AOSL0 */
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0x14, 0x00, /* RESERVED 14 - (1) (1) (1) (1) (1) (1) (1) (1) */
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0x15, 0x00, /* PH711x_V_GATE1_START - VSTA7 VSTA6 VSTA5 VSTA4 VSTA3 VSTA2 VSTA1 VSTA0 */
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0x16, 0x00, /* PH711x_V_GATE1_STOP - VSTO7 VSTO6 VSTO5 VSTO4 VSTO3 VSTO2 VSTO1 VSTO0 */
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0x17, 0x00, /* PH711x_V_GATE1_MSB - (1) (1) (1) (1) (1) (1) VSTO8 VSTA8 */
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};
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static int
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saa711x_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 saa711x *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 saa711x_init_decoder(client, init);
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else {
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struct video_decoder_init vdi;
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vdi.data = saa711x_i2c_init;
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vdi.len = sizeof(saa711x_i2c_init);
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return saa711x_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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saa711x_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 = saa711x_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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saa711x_write(client, 0x11,
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(decoder->reg[0x11] | 0x80));
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} else {
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saa711x_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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saa711x_write(client, 0x13,
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(decoder->reg[0x13] & 0xf0) | 0x0a);
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} else {
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saa711x_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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saa711x_write(client, 0x08,
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(decoder->reg[0x08] & 0x3f) | 0x40);
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saa711x_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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saa711x_write(client, 0x08,
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(decoder->reg[0x08] & 0x3f) | 0x00);
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saa711x_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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saa711x_write(client, 0x08,
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(decoder->reg[0x08] & 0x3f) | 0x00);
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saa711x_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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saa711x_write(client, 0x08,
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(decoder->reg[0x08] & 0x3f) | 0x80);
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saa711x_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 > 9) {
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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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saa711x_write(client, 0x02,
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(decoder->reg[0x02] & 0xf0) | decoder->input);
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/* bypass chrominance trap for modes 4..7 */
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saa711x_write(client, 0x09,
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(decoder->reg[0x09] & 0x7f) | ((decoder->input > 3) ? 0x80 : 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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saa711x_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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saa711x_write(client, 0x08,
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(decoder->reg[0x08] & 0xfb));
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saa711x_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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saa711x_write(client, 0x02,
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(decoder->reg[0x02] & 0xf8));
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saa711x_write(client, 0x08,
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(decoder->
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reg[0x08] & 0xfb) | 0x04);
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saa711x_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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saa711x_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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saa711x_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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saa711x_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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saa711x_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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/* standard i2c insmod options */
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static unsigned short normal_i2c[] = {
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I2C_SAA7113>>1, /* saa7113 */
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I2C_SAA7114>>1, /* saa7114 */
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I2C_CLIENT_END
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};
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I2C_CLIENT_INSMOD;
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static struct i2c_driver i2c_driver_saa711x;
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static int
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saa711x_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 saa711x *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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"saa711x.c: detecting saa711x 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 = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
|
|
if (client == 0)
|
|
return -ENOMEM;
|
|
client->addr = address;
|
|
client->adapter = adapter;
|
|
client->driver = &i2c_driver_saa711x;
|
|
strlcpy(I2C_NAME(client), "saa711x", sizeof(I2C_NAME(client)));
|
|
decoder = kzalloc(sizeof(struct saa711x), GFP_KERNEL);
|
|
if (decoder == NULL) {
|
|
kfree(client);
|
|
return -ENOMEM;
|
|
}
|
|
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 = saa711x_i2c_init;
|
|
vdi.len = sizeof(saa711x_i2c_init);
|
|
i = saa711x_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), saa711x_read(client, 0x00) >> 4,
|
|
client->addr << 1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
saa711x_attach_adapter (struct i2c_adapter *adapter)
|
|
{
|
|
dprintk(1,
|
|
KERN_INFO
|
|
"saa711x.c: starting probe for adapter %s (0x%x)\n",
|
|
I2C_NAME(adapter), adapter->id);
|
|
return i2c_probe(adapter, &addr_data, &saa711x_detect_client);
|
|
}
|
|
|
|
static int
|
|
saa711x_detach_client (struct i2c_client *client)
|
|
{
|
|
struct saa711x *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_saa711x = {
|
|
.driver = {
|
|
.name = "saa711x",
|
|
},
|
|
.id = I2C_DRIVERID_SAA711X,
|
|
.attach_adapter = saa711x_attach_adapter,
|
|
.detach_client = saa711x_detach_client,
|
|
.command = saa711x_command,
|
|
};
|
|
|
|
static int __init
|
|
saa711x_init (void)
|
|
{
|
|
return i2c_add_driver(&i2c_driver_saa711x);
|
|
}
|
|
|
|
static void __exit
|
|
saa711x_exit (void)
|
|
{
|
|
i2c_del_driver(&i2c_driver_saa711x);
|
|
}
|
|
|
|
module_init(saa711x_init);
|
|
module_exit(saa711x_exit);
|