394 lines
11 KiB
C
394 lines
11 KiB
C
/*
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* Copyright (C) 2005-2006 Micronas USA Inc.
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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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* 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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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/i2c.h>
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#include <linux/videodev2.h>
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#include <media/tuner.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-device.h>
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#include <linux/slab.h>
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MODULE_DESCRIPTION("sony-btf-mpx driver");
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MODULE_LICENSE("GPL v2");
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "debug level 0=off(default) 1=on");
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/* #define MPX_DEBUG */
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/*
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* Note:
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*
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* AS(IF/MPX) pin: LOW HIGH/OPEN
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* IF/MPX address: 0x42/0x40 0x43/0x44
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*/
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static int force_mpx_mode = -1;
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module_param(force_mpx_mode, int, 0644);
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struct sony_btf_mpx {
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struct v4l2_subdev sd;
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int mpxmode;
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u32 audmode;
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};
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static inline struct sony_btf_mpx *to_state(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct sony_btf_mpx, sd);
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}
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static int mpx_write(struct i2c_client *client, int dev, int addr, int val)
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{
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u8 buffer[5];
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struct i2c_msg msg;
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buffer[0] = dev;
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buffer[1] = addr >> 8;
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buffer[2] = addr & 0xff;
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buffer[3] = val >> 8;
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buffer[4] = val & 0xff;
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msg.addr = client->addr;
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msg.flags = 0;
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msg.len = 5;
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msg.buf = buffer;
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i2c_transfer(client->adapter, &msg, 1);
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return 0;
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}
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/*
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* MPX register values for the BTF-PG472Z:
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*
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* FM_ NICAM_ SCART_
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* MODUS SOURCE ACB PRESCAL PRESCAL PRESCAL SYSTEM VOLUME
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* 10/0030 12/0008 12/0013 12/000E 12/0010 12/0000 10/0020 12/0000
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* ---------------------------------------------------------------
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* Auto 1003 0020 0100 2603 5000 XXXX 0001 7500
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*
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* B/G
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* Mono 1003 0020 0100 2603 5000 XXXX 0003 7500
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* A2 1003 0020 0100 2601 5000 XXXX 0003 7500
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* NICAM 1003 0120 0100 2603 5000 XXXX 0008 7500
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*
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* I
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* Mono 1003 0020 0100 2603 7900 XXXX 000A 7500
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* NICAM 1003 0120 0100 2603 7900 XXXX 000A 7500
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*
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* D/K
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* Mono 1003 0020 0100 2603 5000 XXXX 0004 7500
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* A2-1 1003 0020 0100 2601 5000 XXXX 0004 7500
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* A2-2 1003 0020 0100 2601 5000 XXXX 0005 7500
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* A2-3 1003 0020 0100 2601 5000 XXXX 0007 7500
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* NICAM 1003 0120 0100 2603 5000 XXXX 000B 7500
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*
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* L/L'
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* Mono 0003 0200 0100 7C03 5000 2200 0009 7500
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* NICAM 0003 0120 0100 7C03 5000 XXXX 0009 7500
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*
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* M
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* Mono 1003 0200 0100 2B03 5000 2B00 0002 7500
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*
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* For Asia, replace the 0x26XX in FM_PRESCALE with 0x14XX.
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*
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* Bilingual selection in A2/NICAM:
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*
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* High byte of SOURCE Left chan Right chan
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* 0x01 MAIN SUB
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* 0x03 MAIN MAIN
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* 0x04 SUB SUB
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*
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* Force mono in NICAM by setting the high byte of SOURCE to 0x02 (L/L') or
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* 0x00 (all other bands). Force mono in A2 with FMONO_A2:
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*
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* FMONO_A2
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* 10/0022
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* --------
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* Forced mono ON 07F0
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* Forced mono OFF 0190
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*/
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static const struct {
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enum { AUD_MONO, AUD_A2, AUD_NICAM, AUD_NICAM_L } audio_mode;
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u16 modus;
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u16 source;
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u16 acb;
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u16 fm_prescale;
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u16 nicam_prescale;
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u16 scart_prescale;
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u16 system;
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u16 volume;
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} mpx_audio_modes[] = {
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/* Auto */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
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0x5000, 0x0000, 0x0001, 0x7500 },
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/* B/G Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
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0x5000, 0x0000, 0x0003, 0x7500 },
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/* B/G A2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
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0x5000, 0x0000, 0x0003, 0x7500 },
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/* B/G NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
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0x5000, 0x0000, 0x0008, 0x7500 },
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/* I Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
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0x7900, 0x0000, 0x000A, 0x7500 },
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/* I NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
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0x7900, 0x0000, 0x000A, 0x7500 },
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/* D/K Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
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0x5000, 0x0000, 0x0004, 0x7500 },
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/* D/K A2-1 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
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0x5000, 0x0000, 0x0004, 0x7500 },
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/* D/K A2-2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
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0x5000, 0x0000, 0x0005, 0x7500 },
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/* D/K A2-3 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
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0x5000, 0x0000, 0x0007, 0x7500 },
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/* D/K NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
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0x5000, 0x0000, 0x000B, 0x7500 },
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/* L/L' Mono */ { AUD_MONO, 0x0003, 0x0200, 0x0100, 0x7C03,
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0x5000, 0x2200, 0x0009, 0x7500 },
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/* L/L' NICAM */{ AUD_NICAM_L, 0x0003, 0x0120, 0x0100, 0x7C03,
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0x5000, 0x0000, 0x0009, 0x7500 },
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};
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#define MPX_NUM_MODES ARRAY_SIZE(mpx_audio_modes)
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static int mpx_setup(struct sony_btf_mpx *t)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&t->sd);
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u16 source = 0;
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u8 buffer[3];
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struct i2c_msg msg;
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int mode = t->mpxmode;
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/* reset MPX */
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buffer[0] = 0x00;
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buffer[1] = 0x80;
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buffer[2] = 0x00;
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msg.addr = client->addr;
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msg.flags = 0;
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msg.len = 3;
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msg.buf = buffer;
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i2c_transfer(client->adapter, &msg, 1);
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buffer[1] = 0x00;
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i2c_transfer(client->adapter, &msg, 1);
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if (t->audmode != V4L2_TUNER_MODE_MONO)
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mode++;
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if (mpx_audio_modes[mode].audio_mode != AUD_MONO) {
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switch (t->audmode) {
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case V4L2_TUNER_MODE_MONO:
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switch (mpx_audio_modes[mode].audio_mode) {
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case AUD_A2:
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source = mpx_audio_modes[mode].source;
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break;
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case AUD_NICAM:
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source = 0x0000;
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break;
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case AUD_NICAM_L:
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source = 0x0200;
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break;
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default:
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break;
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}
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break;
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case V4L2_TUNER_MODE_STEREO:
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source = mpx_audio_modes[mode].source;
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break;
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case V4L2_TUNER_MODE_LANG1:
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source = 0x0300;
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break;
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case V4L2_TUNER_MODE_LANG2:
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source = 0x0400;
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break;
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}
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source |= mpx_audio_modes[mode].source & 0x00ff;
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} else
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source = mpx_audio_modes[mode].source;
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mpx_write(client, 0x10, 0x0030, mpx_audio_modes[mode].modus);
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mpx_write(client, 0x12, 0x0008, source);
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mpx_write(client, 0x12, 0x0013, mpx_audio_modes[mode].acb);
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mpx_write(client, 0x12, 0x000e,
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mpx_audio_modes[mode].fm_prescale);
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mpx_write(client, 0x12, 0x0010,
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mpx_audio_modes[mode].nicam_prescale);
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mpx_write(client, 0x12, 0x000d,
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mpx_audio_modes[mode].scart_prescale);
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mpx_write(client, 0x10, 0x0020, mpx_audio_modes[mode].system);
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mpx_write(client, 0x12, 0x0000, mpx_audio_modes[mode].volume);
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if (mpx_audio_modes[mode].audio_mode == AUD_A2)
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mpx_write(client, 0x10, 0x0022,
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t->audmode == V4L2_TUNER_MODE_MONO ? 0x07f0 : 0x0190);
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#ifdef MPX_DEBUG
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{
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u8 buf1[3], buf2[2];
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struct i2c_msg msgs[2];
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v4l2_info(client,
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"MPX registers: %04x %04x %04x %04x %04x %04x %04x %04x\n",
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mpx_audio_modes[mode].modus,
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source,
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mpx_audio_modes[mode].acb,
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mpx_audio_modes[mode].fm_prescale,
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mpx_audio_modes[mode].nicam_prescale,
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mpx_audio_modes[mode].scart_prescale,
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mpx_audio_modes[mode].system,
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mpx_audio_modes[mode].volume);
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buf1[0] = 0x11;
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buf1[1] = 0x00;
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buf1[2] = 0x7e;
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msgs[0].addr = client->addr;
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msgs[0].flags = 0;
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msgs[0].len = 3;
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msgs[0].buf = buf1;
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msgs[1].addr = client->addr;
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msgs[1].flags = I2C_M_RD;
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msgs[1].len = 2;
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msgs[1].buf = buf2;
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i2c_transfer(client->adapter, msgs, 2);
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v4l2_info(client, "MPX system: %02x%02x\n",
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buf2[0], buf2[1]);
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buf1[0] = 0x11;
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buf1[1] = 0x02;
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buf1[2] = 0x00;
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i2c_transfer(client->adapter, msgs, 2);
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v4l2_info(client, "MPX status: %02x%02x\n",
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buf2[0], buf2[1]);
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}
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#endif
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return 0;
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}
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static int sony_btf_mpx_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
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{
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struct sony_btf_mpx *t = to_state(sd);
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int default_mpx_mode = 0;
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if (std & V4L2_STD_PAL_BG)
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default_mpx_mode = 1;
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else if (std & V4L2_STD_PAL_I)
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default_mpx_mode = 4;
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else if (std & V4L2_STD_PAL_DK)
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default_mpx_mode = 6;
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else if (std & V4L2_STD_SECAM_L)
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default_mpx_mode = 11;
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if (default_mpx_mode != t->mpxmode) {
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t->mpxmode = default_mpx_mode;
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mpx_setup(t);
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}
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return 0;
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}
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static int sony_btf_mpx_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
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{
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struct sony_btf_mpx *t = to_state(sd);
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vt->capability = V4L2_TUNER_CAP_NORM |
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V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
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V4L2_TUNER_CAP_LANG2;
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vt->rxsubchans = V4L2_TUNER_SUB_MONO |
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V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_LANG1 |
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V4L2_TUNER_SUB_LANG2;
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vt->audmode = t->audmode;
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return 0;
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}
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static int sony_btf_mpx_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
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{
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struct sony_btf_mpx *t = to_state(sd);
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if (vt->type != V4L2_TUNER_ANALOG_TV)
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return -EINVAL;
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if (vt->audmode != t->audmode) {
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t->audmode = vt->audmode;
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mpx_setup(t);
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}
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return 0;
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}
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/* --------------------------------------------------------------------------*/
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static const struct v4l2_subdev_tuner_ops sony_btf_mpx_tuner_ops = {
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.s_tuner = sony_btf_mpx_s_tuner,
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.g_tuner = sony_btf_mpx_g_tuner,
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};
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static const struct v4l2_subdev_video_ops sony_btf_mpx_video_ops = {
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.s_std = sony_btf_mpx_s_std,
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};
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static const struct v4l2_subdev_ops sony_btf_mpx_ops = {
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.tuner = &sony_btf_mpx_tuner_ops,
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.video = &sony_btf_mpx_video_ops,
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};
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/* --------------------------------------------------------------------------*/
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static int sony_btf_mpx_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct sony_btf_mpx *t;
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struct v4l2_subdev *sd;
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
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return -ENODEV;
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v4l_info(client, "chip found @ 0x%x (%s)\n",
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client->addr << 1, client->adapter->name);
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t = devm_kzalloc(&client->dev, sizeof(*t), GFP_KERNEL);
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if (t == NULL)
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return -ENOMEM;
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sd = &t->sd;
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v4l2_i2c_subdev_init(sd, client, &sony_btf_mpx_ops);
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/* Initialize sony_btf_mpx */
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t->mpxmode = 0;
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t->audmode = V4L2_TUNER_MODE_STEREO;
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return 0;
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}
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static int sony_btf_mpx_remove(struct i2c_client *client)
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{
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struct v4l2_subdev *sd = i2c_get_clientdata(client);
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v4l2_device_unregister_subdev(sd);
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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static const struct i2c_device_id sony_btf_mpx_id[] = {
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{ "sony-btf-mpx", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, sony_btf_mpx_id);
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static struct i2c_driver sony_btf_mpx_driver = {
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.driver = {
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.name = "sony-btf-mpx",
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},
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.probe = sony_btf_mpx_probe,
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.remove = sony_btf_mpx_remove,
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.id_table = sony_btf_mpx_id,
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};
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module_i2c_driver(sony_btf_mpx_driver);
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