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385 lines
10 KiB
385 lines
10 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2005-2006 Micronas USA Inc. |
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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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