diff options
Diffstat (limited to 'drivers/media/i2c/sony-btf-mpx.c')
| -rw-r--r-- | drivers/media/i2c/sony-btf-mpx.c | 383 |
1 files changed, 383 insertions, 0 deletions
diff --git a/drivers/media/i2c/sony-btf-mpx.c b/drivers/media/i2c/sony-btf-mpx.c new file mode 100644 index 000000000..927a9ec41 --- /dev/null +++ b/drivers/media/i2c/sony-btf-mpx.c @@ -0,0 +1,383 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2005-2006 Micronas USA Inc. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/i2c.h> +#include <linux/videodev2.h> +#include <media/tuner.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-device.h> +#include <linux/slab.h> + +MODULE_DESCRIPTION("sony-btf-mpx driver"); +MODULE_LICENSE("GPL v2"); + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "debug level 0=off(default) 1=on"); + +/* #define MPX_DEBUG */ + +/* + * Note: + * + * AS(IF/MPX) pin: LOW HIGH/OPEN + * IF/MPX address: 0x42/0x40 0x43/0x44 + */ + + +static int force_mpx_mode = -1; +module_param(force_mpx_mode, int, 0644); + +struct sony_btf_mpx { + struct v4l2_subdev sd; + int mpxmode; + u32 audmode; +}; + +static inline struct sony_btf_mpx *to_state(struct v4l2_subdev *sd) +{ + return container_of(sd, struct sony_btf_mpx, sd); +} + +static int mpx_write(struct i2c_client *client, int dev, int addr, int val) +{ + u8 buffer[5]; + struct i2c_msg msg; + + buffer[0] = dev; + buffer[1] = addr >> 8; + buffer[2] = addr & 0xff; + buffer[3] = val >> 8; + buffer[4] = val & 0xff; + msg.addr = client->addr; + msg.flags = 0; + msg.len = 5; + msg.buf = buffer; + i2c_transfer(client->adapter, &msg, 1); + return 0; +} + +/* + * MPX register values for the BTF-PG472Z: + * + * FM_ NICAM_ SCART_ + * MODUS SOURCE ACB PRESCAL PRESCAL PRESCAL SYSTEM VOLUME + * 10/0030 12/0008 12/0013 12/000E 12/0010 12/0000 10/0020 12/0000 + * --------------------------------------------------------------- + * Auto 1003 0020 0100 2603 5000 XXXX 0001 7500 + * + * B/G + * Mono 1003 0020 0100 2603 5000 XXXX 0003 7500 + * A2 1003 0020 0100 2601 5000 XXXX 0003 7500 + * NICAM 1003 0120 0100 2603 5000 XXXX 0008 7500 + * + * I + * Mono 1003 0020 0100 2603 7900 XXXX 000A 7500 + * NICAM 1003 0120 0100 2603 7900 XXXX 000A 7500 + * + * D/K + * Mono 1003 0020 0100 2603 5000 XXXX 0004 7500 + * A2-1 1003 0020 0100 2601 5000 XXXX 0004 7500 + * A2-2 1003 0020 0100 2601 5000 XXXX 0005 7500 + * A2-3 1003 0020 0100 2601 5000 XXXX 0007 7500 + * NICAM 1003 0120 0100 2603 5000 XXXX 000B 7500 + * + * L/L' + * Mono 0003 0200 0100 7C03 5000 2200 0009 7500 + * NICAM 0003 0120 0100 7C03 5000 XXXX 0009 7500 + * + * M + * Mono 1003 0200 0100 2B03 5000 2B00 0002 7500 + * + * For Asia, replace the 0x26XX in FM_PRESCALE with 0x14XX. + * + * Bilingual selection in A2/NICAM: + * + * High byte of SOURCE Left chan Right chan + * 0x01 MAIN SUB + * 0x03 MAIN MAIN + * 0x04 SUB SUB + * + * Force mono in NICAM by setting the high byte of SOURCE to 0x02 (L/L') or + * 0x00 (all other bands). Force mono in A2 with FMONO_A2: + * + * FMONO_A2 + * 10/0022 + * -------- + * Forced mono ON 07F0 + * Forced mono OFF 0190 + */ + +static const struct { + enum { AUD_MONO, AUD_A2, AUD_NICAM, AUD_NICAM_L } audio_mode; + u16 modus; + u16 source; + u16 acb; + u16 fm_prescale; + u16 nicam_prescale; + u16 scart_prescale; + u16 system; + u16 volume; +} mpx_audio_modes[] = { + /* Auto */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603, + 0x5000, 0x0000, 0x0001, 0x7500 }, + /* B/G Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603, + 0x5000, 0x0000, 0x0003, 0x7500 }, + /* B/G A2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601, + 0x5000, 0x0000, 0x0003, 0x7500 }, + /* B/G NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603, + 0x5000, 0x0000, 0x0008, 0x7500 }, + /* I Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603, + 0x7900, 0x0000, 0x000A, 0x7500 }, + /* I NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603, + 0x7900, 0x0000, 0x000A, 0x7500 }, + /* D/K Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603, + 0x5000, 0x0000, 0x0004, 0x7500 }, + /* D/K A2-1 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601, + 0x5000, 0x0000, 0x0004, 0x7500 }, + /* D/K A2-2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601, + 0x5000, 0x0000, 0x0005, 0x7500 }, + /* D/K A2-3 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601, + 0x5000, 0x0000, 0x0007, 0x7500 }, + /* D/K NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603, + 0x5000, 0x0000, 0x000B, 0x7500 }, + /* L/L' Mono */ { AUD_MONO, 0x0003, 0x0200, 0x0100, 0x7C03, + 0x5000, 0x2200, 0x0009, 0x7500 }, + /* L/L' NICAM */{ AUD_NICAM_L, 0x0003, 0x0120, 0x0100, 0x7C03, + 0x5000, 0x0000, 0x0009, 0x7500 }, +}; + +#define MPX_NUM_MODES ARRAY_SIZE(mpx_audio_modes) + +static int mpx_setup(struct sony_btf_mpx *t) +{ + struct i2c_client *client = v4l2_get_subdevdata(&t->sd); + u16 source = 0; + u8 buffer[3]; + struct i2c_msg msg; + int mode = t->mpxmode; + + /* reset MPX */ + buffer[0] = 0x00; + buffer[1] = 0x80; + buffer[2] = 0x00; + msg.addr = client->addr; + msg.flags = 0; + msg.len = 3; + msg.buf = buffer; + i2c_transfer(client->adapter, &msg, 1); + buffer[1] = 0x00; + i2c_transfer(client->adapter, &msg, 1); + + if (t->audmode != V4L2_TUNER_MODE_MONO) + mode++; + + if (mpx_audio_modes[mode].audio_mode != AUD_MONO) { + switch (t->audmode) { + case V4L2_TUNER_MODE_MONO: + switch (mpx_audio_modes[mode].audio_mode) { + case AUD_A2: + source = mpx_audio_modes[mode].source; + break; + case AUD_NICAM: + source = 0x0000; + break; + case AUD_NICAM_L: + source = 0x0200; + break; + default: + break; + } + break; + case V4L2_TUNER_MODE_STEREO: + source = mpx_audio_modes[mode].source; + break; + case V4L2_TUNER_MODE_LANG1: + source = 0x0300; + break; + case V4L2_TUNER_MODE_LANG2: + source = 0x0400; + break; + } + source |= mpx_audio_modes[mode].source & 0x00ff; + } else + source = mpx_audio_modes[mode].source; + + mpx_write(client, 0x10, 0x0030, mpx_audio_modes[mode].modus); + mpx_write(client, 0x12, 0x0008, source); + mpx_write(client, 0x12, 0x0013, mpx_audio_modes[mode].acb); + mpx_write(client, 0x12, 0x000e, + mpx_audio_modes[mode].fm_prescale); + mpx_write(client, 0x12, 0x0010, + mpx_audio_modes[mode].nicam_prescale); + mpx_write(client, 0x12, 0x000d, + mpx_audio_modes[mode].scart_prescale); + mpx_write(client, 0x10, 0x0020, mpx_audio_modes[mode].system); + mpx_write(client, 0x12, 0x0000, mpx_audio_modes[mode].volume); + if (mpx_audio_modes[mode].audio_mode == AUD_A2) + mpx_write(client, 0x10, 0x0022, + t->audmode == V4L2_TUNER_MODE_MONO ? 0x07f0 : 0x0190); + +#ifdef MPX_DEBUG + { + u8 buf1[3], buf2[2]; + struct i2c_msg msgs[2]; + + v4l2_info(client, + "MPX registers: %04x %04x %04x %04x %04x %04x %04x %04x\n", + mpx_audio_modes[mode].modus, + source, + mpx_audio_modes[mode].acb, + mpx_audio_modes[mode].fm_prescale, + mpx_audio_modes[mode].nicam_prescale, + mpx_audio_modes[mode].scart_prescale, + mpx_audio_modes[mode].system, + mpx_audio_modes[mode].volume); + buf1[0] = 0x11; + buf1[1] = 0x00; + buf1[2] = 0x7e; + msgs[0].addr = client->addr; + msgs[0].flags = 0; + msgs[0].len = 3; + msgs[0].buf = buf1; + msgs[1].addr = client->addr; + msgs[1].flags = I2C_M_RD; + msgs[1].len = 2; + msgs[1].buf = buf2; + i2c_transfer(client->adapter, msgs, 2); + v4l2_info(client, "MPX system: %02x%02x\n", + buf2[0], buf2[1]); + buf1[0] = 0x11; + buf1[1] = 0x02; + buf1[2] = 0x00; + i2c_transfer(client->adapter, msgs, 2); + v4l2_info(client, "MPX status: %02x%02x\n", + buf2[0], buf2[1]); + } +#endif + return 0; +} + + +static int sony_btf_mpx_s_std(struct v4l2_subdev *sd, v4l2_std_id std) +{ + struct sony_btf_mpx *t = to_state(sd); + int default_mpx_mode = 0; + + if (std & V4L2_STD_PAL_BG) + default_mpx_mode = 1; + else if (std & V4L2_STD_PAL_I) + default_mpx_mode = 4; + else if (std & V4L2_STD_PAL_DK) + default_mpx_mode = 6; + else if (std & V4L2_STD_SECAM_L) + default_mpx_mode = 11; + + if (default_mpx_mode != t->mpxmode) { + t->mpxmode = default_mpx_mode; + mpx_setup(t); + } + return 0; +} + +static int sony_btf_mpx_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) +{ + struct sony_btf_mpx *t = to_state(sd); + + vt->capability = V4L2_TUNER_CAP_NORM | + V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 | + V4L2_TUNER_CAP_LANG2; + vt->rxsubchans = V4L2_TUNER_SUB_MONO | + V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_LANG1 | + V4L2_TUNER_SUB_LANG2; + vt->audmode = t->audmode; + return 0; +} + +static int sony_btf_mpx_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt) +{ + struct sony_btf_mpx *t = to_state(sd); + + if (vt->type != V4L2_TUNER_ANALOG_TV) + return -EINVAL; + + if (vt->audmode != t->audmode) { + t->audmode = vt->audmode; + mpx_setup(t); + } + return 0; +} + +/* --------------------------------------------------------------------------*/ + +static const struct v4l2_subdev_tuner_ops sony_btf_mpx_tuner_ops = { + .s_tuner = sony_btf_mpx_s_tuner, + .g_tuner = sony_btf_mpx_g_tuner, +}; + +static const struct v4l2_subdev_video_ops sony_btf_mpx_video_ops = { + .s_std = sony_btf_mpx_s_std, +}; + +static const struct v4l2_subdev_ops sony_btf_mpx_ops = { + .tuner = &sony_btf_mpx_tuner_ops, + .video = &sony_btf_mpx_video_ops, +}; + +/* --------------------------------------------------------------------------*/ + +static int sony_btf_mpx_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct sony_btf_mpx *t; + struct v4l2_subdev *sd; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) + return -ENODEV; + + v4l_info(client, "chip found @ 0x%x (%s)\n", + client->addr << 1, client->adapter->name); + + t = devm_kzalloc(&client->dev, sizeof(*t), GFP_KERNEL); + if (t == NULL) + return -ENOMEM; + + sd = &t->sd; + v4l2_i2c_subdev_init(sd, client, &sony_btf_mpx_ops); + + /* Initialize sony_btf_mpx */ + t->mpxmode = 0; + t->audmode = V4L2_TUNER_MODE_STEREO; + + return 0; +} + +static void sony_btf_mpx_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + + v4l2_device_unregister_subdev(sd); +} + +/* ----------------------------------------------------------------------- */ + +static const struct i2c_device_id sony_btf_mpx_id[] = { + { "sony-btf-mpx", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, sony_btf_mpx_id); + +static struct i2c_driver sony_btf_mpx_driver = { + .driver = { + .name = "sony-btf-mpx", + }, + .probe = sony_btf_mpx_probe, + .remove = sony_btf_mpx_remove, + .id_table = sony_btf_mpx_id, +}; +module_i2c_driver(sony_btf_mpx_driver); |