patch_cmedia.c

底层驱动开发

	memset(assigned, 0, sizeof(assigned));
	/* check the pins we found */
	for (i = 0; i < cfg->line_outs; i++) {
		nid = cfg->line_out_pins[i];
		/* nid 0x0b~0x0e is hardwired to audio widget 0x3~0x6 */
		if (nid >= 0x0b && nid <= 0x0e) {
			spec->dac_nids[i] = (nid - 0x0b) + 0x03;
			assigned[nid - 0x0b] = 1;
		}
	}
	/* left pin can be connect to any audio widget */
	for (i = 0; i < cfg->line_outs; i++) {
		nid = cfg->line_out_pins[i];
		if (nid <= 0x0e)
			continue;
		/* search for an empty channel */
		for (j = 0; j < cfg->line_outs; j++) {
			if (! assigned[j]) {
				spec->dac_nids[i] = j + 0x03;
				assigned[j] = 1;
				break;
			}
		}
	}
	spec->num_dacs = cfg->line_outs;
	return 0;
}

/* create multi_init table, which is used for multichannel initialization */
static int cmi9880_fill_multi_init(struct hda_codec *codec, const struct auto_pin_cfg *cfg)
{
	struct cmi_spec *spec = codec->spec;
	hda_nid_t nid;
	int i, j, k, len;

	/* clear the table, only one c-media dac assumed here */
	memset(spec->multi_init, 0, sizeof(spec->multi_init));
	for (j = 0, i = 0; i < cfg->line_outs; i++) {
		hda_nid_t conn[4];
		nid = cfg->line_out_pins[i];
		/* set as output */
		spec->multi_init[j].nid = nid;
		spec->multi_init[j].verb = AC_VERB_SET_PIN_WIDGET_CONTROL;
		spec->multi_init[j].param = PIN_OUT;
		j++;
		if (nid > 0x0e) {
			/* set connection */
			spec->multi_init[j].nid = nid;
			spec->multi_init[j].verb = AC_VERB_SET_CONNECT_SEL;
			spec->multi_init[j].param = 0;
			/* find the index in connect list */
			len = snd_hda_get_connections(codec, nid, conn, 4);
			for (k = 0; k < len; k++)
				if (conn[k] == spec->dac_nids[i]) {
					spec->multi_init[j].param = k;
					break;
				}
			j++;
		}
	}
	return 0;
}

static int cmi9880_init(struct hda_codec *codec)
{
	struct cmi_spec *spec = codec->spec;
	if (spec->board_config == CMI_ALLOUT)
		snd_hda_sequence_write(codec, cmi9880_allout_init);
	else
		snd_hda_sequence_write(codec, cmi9880_basic_init);
	if (spec->board_config == CMI_AUTO)
		snd_hda_sequence_write(codec, spec->multi_init);
	return 0;
}

#ifdef CONFIG_PM
/*
 * resume
 */
static int cmi9880_resume(struct hda_codec *codec)
{
	struct cmi_spec *spec = codec->spec;

	cmi9880_init(codec);
	snd_hda_resume_ctls(codec, cmi9880_basic_mixer);
	if (spec->surr_switch)
		snd_hda_resume_ctls(codec, cmi9880_ch_mode_mixer);
	if (spec->multiout.dig_out_nid)
		snd_hda_resume_spdif_out(codec);
	if (spec->dig_in_nid)
		snd_hda_resume_spdif_in(codec);

	return 0;
}
#endif

/*
 * Analog playback callbacks
 */
static int cmi9880_playback_pcm_open(struct hda_pcm_stream *hinfo,
				     struct hda_codec *codec,
				     snd_pcm_substream_t *substream)
{
	struct cmi_spec *spec = codec->spec;
	return snd_hda_multi_out_analog_open(codec, &spec->multiout, substream);
}

static int cmi9880_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
					struct hda_codec *codec,
					unsigned int stream_tag,
					unsigned int format,
					snd_pcm_substream_t *substream)
{
	struct cmi_spec *spec = codec->spec;
	return snd_hda_multi_out_analog_prepare(codec, &spec->multiout, stream_tag,
						format, substream);
}

static int cmi9880_playback_pcm_cleanup(struct hda_pcm_stream *hinfo,
				       struct hda_codec *codec,
				       snd_pcm_substream_t *substream)
{
	struct cmi_spec *spec = codec->spec;
	return snd_hda_multi_out_analog_cleanup(codec, &spec->multiout);
}

/*
 * Digital out
 */
static int cmi9880_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,
					 struct hda_codec *codec,
					 snd_pcm_substream_t *substream)
{
	struct cmi_spec *spec = codec->spec;
	return snd_hda_multi_out_dig_open(codec, &spec->multiout);
}

static int cmi9880_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
					  struct hda_codec *codec,
					  snd_pcm_substream_t *substream)
{
	struct cmi_spec *spec = codec->spec;
	return snd_hda_multi_out_dig_close(codec, &spec->multiout);
}

/*
 * Analog capture
 */
static int cmi9880_capture_pcm_prepare(struct hda_pcm_stream *hinfo,
				      struct hda_codec *codec,
				      unsigned int stream_tag,
				      unsigned int format,
				      snd_pcm_substream_t *substream)
{
	struct cmi_spec *spec = codec->spec;

	snd_hda_codec_setup_stream(codec, spec->adc_nids[substream->number],
				   stream_tag, 0, format);
	return 0;
}

static int cmi9880_capture_pcm_cleanup(struct hda_pcm_stream *hinfo,
				      struct hda_codec *codec,
				      snd_pcm_substream_t *substream)
{
	struct cmi_spec *spec = codec->spec;

	snd_hda_codec_setup_stream(codec, spec->adc_nids[substream->number], 0, 0, 0);
	return 0;
}


/*
 */
static struct hda_pcm_stream cmi9880_pcm_analog_playback = {
	.substreams = 1,
	.channels_min = 2,
	.channels_max = 8,
	.nid = 0x03, /* NID to query formats and rates */
	.ops = {
		.open = cmi9880_playback_pcm_open,
		.prepare = cmi9880_playback_pcm_prepare,
		.cleanup = cmi9880_playback_pcm_cleanup
	},
};

static struct hda_pcm_stream cmi9880_pcm_analog_capture = {
	.substreams = 2,
	.channels_min = 2,
	.channels_max = 2,
	.nid = 0x08, /* NID to query formats and rates */
	.ops = {
		.prepare = cmi9880_capture_pcm_prepare,
		.cleanup = cmi9880_capture_pcm_cleanup
	},
};

static struct hda_pcm_stream cmi9880_pcm_digital_playback = {
	.substreams = 1,
	.channels_min = 2,
	.channels_max = 2,
	/* NID is set in cmi9880_build_pcms */
	.ops = {
		.open = cmi9880_dig_playback_pcm_open,
		.close = cmi9880_dig_playback_pcm_close
	},
};

static struct hda_pcm_stream cmi9880_pcm_digital_capture = {
	.substreams = 1,
	.channels_min = 2,
	.channels_max = 2,
	/* NID is set in cmi9880_build_pcms */
};

static int cmi9880_build_pcms(struct hda_codec *codec)
{
	struct cmi_spec *spec = codec->spec;
	struct hda_pcm *info = spec->pcm_rec;

	codec->num_pcms = 1;
	codec->pcm_info = info;

	info->name = "CMI9880";
	info->stream[SNDRV_PCM_STREAM_PLAYBACK] = cmi9880_pcm_analog_playback;
	info->stream[SNDRV_PCM_STREAM_CAPTURE] = cmi9880_pcm_analog_capture;

	if (spec->multiout.dig_out_nid || spec->dig_in_nid) {
		codec->num_pcms++;
		info++;
		info->name = "CMI9880 Digital";
		if (spec->multiout.dig_out_nid) {
			info->stream[SNDRV_PCM_STREAM_PLAYBACK] = cmi9880_pcm_digital_playback;
			info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = spec->multiout.dig_out_nid;
		}
		if (spec->dig_in_nid) {
			info->stream[SNDRV_PCM_STREAM_CAPTURE] = cmi9880_pcm_digital_capture;
			info->stream[SNDRV_PCM_STREAM_CAPTURE].nid = spec->dig_in_nid;
		}
	}

	return 0;
}

static void cmi9880_free(struct hda_codec *codec)
{
	kfree(codec->spec);
}

/*
 */

static struct hda_board_config cmi9880_cfg_tbl[] = {
	{ .modelname = "minimal", .config = CMI_MINIMAL },
	{ .modelname = "min_fp", .config = CMI_MIN_FP },
	{ .modelname = "full", .config = CMI_FULL },
	{ .modelname = "full_dig", .config = CMI_FULL_DIG },
	{ .pci_subvendor = 0x1043, .pci_subdevice = 0x813d, .config = CMI_FULL_DIG }, /* ASUS P5AD2 */
	{ .modelname = "allout", .config = CMI_ALLOUT },
	{ .modelname = "auto", .config = CMI_AUTO },
	{} /* terminator */
};

static struct hda_codec_ops cmi9880_patch_ops = {
	.build_controls = cmi9880_build_controls,
	.build_pcms = cmi9880_build_pcms,
	.init = cmi9880_init,
	.free = cmi9880_free,
#ifdef CONFIG_PM
	.resume = cmi9880_resume,
#endif
};

static int patch_cmi9880(struct hda_codec *codec)
{
	struct cmi_spec *spec;

	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
	if (spec == NULL)
		return -ENOMEM;

	codec->spec = spec;
	spec->board_config = snd_hda_check_board_config(codec, cmi9880_cfg_tbl);
	if (spec->board_config < 0) {
		snd_printdd(KERN_INFO "hda_codec: Unknown model for CMI9880\n");
		spec->board_config = CMI_AUTO; /* try everything */
	}

	/* copy default DAC NIDs */
	memcpy(spec->dac_nids, cmi9880_dac_nids, sizeof(spec->dac_nids));
	spec->num_dacs = 4;

	switch (spec->board_config) {
	case CMI_MINIMAL:
	case CMI_MIN_FP:
		spec->surr_switch = 1;
		if (spec->board_config == CMI_MINIMAL)
			spec->num_ch_modes = 2;
		else {
			spec->front_panel = 1;
			spec->num_ch_modes = 3;
		}
		spec->channel_modes = cmi9880_channel_modes;
		spec->multiout.max_channels = cmi9880_channel_modes[0].channels;
		spec->input_mux = &cmi9880_basic_mux;
		break;
	case CMI_FULL:
	case CMI_FULL_DIG:
		spec->front_panel = 1;
		spec->multiout.max_channels = 8;
		spec->input_mux = &cmi9880_basic_mux;
		if (spec->board_config == CMI_FULL_DIG) {
			spec->multiout.dig_out_nid = CMI_DIG_OUT_NID;
			spec->dig_in_nid = CMI_DIG_IN_NID;
		}
		break;
	case CMI_ALLOUT:
		spec->front_panel = 1;
		spec->multiout.max_channels = 8;
		spec->no_line_in = 1;
		spec->input_mux = &cmi9880_no_line_mux;
		spec->multiout.dig_out_nid = CMI_DIG_OUT_NID;
		break;
	case CMI_AUTO:
		{
		unsigned int port_e, port_f, port_g, port_h;
		unsigned int port_spdifi, port_spdifo;
		struct auto_pin_cfg cfg;

		/* collect pin default configuration */
		port_e = snd_hda_codec_read(codec, 0x0f, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
		port_f = snd_hda_codec_read(codec, 0x10, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
		spec->front_panel = 1;
		if (get_defcfg_connect(port_e) == AC_JACK_PORT_NONE ||
		    get_defcfg_connect(port_f) == AC_JACK_PORT_NONE) {
			port_g = snd_hda_codec_read(codec, 0x1f, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
			port_h = snd_hda_codec_read(codec, 0x20, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
			spec->surr_switch = 1;
			/* no front panel */
			if (get_defcfg_connect(port_g) == AC_JACK_PORT_NONE ||
			    get_defcfg_connect(port_h) == AC_JACK_PORT_NONE) {
				/* no optional rear panel */
				spec->board_config = CMI_MINIMAL;
				spec->front_panel = 0;
				spec->num_ch_modes = 2;
			} else {
				spec->board_config = CMI_MIN_FP;
				spec->num_ch_modes = 3;
			}
			spec->channel_modes = cmi9880_channel_modes;
			spec->input_mux = &cmi9880_basic_mux;
			spec->multiout.max_channels = cmi9880_channel_modes[0].channels;
		} else {
			spec->input_mux = &cmi9880_basic_mux;
			port_spdifi = snd_hda_codec_read(codec, 0x13, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
			port_spdifo = snd_hda_codec_read(codec, 0x12, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
			if (get_defcfg_connect(port_spdifo) != AC_JACK_PORT_NONE)
				spec->multiout.dig_out_nid = CMI_DIG_OUT_NID;
			if (get_defcfg_connect(port_spdifi) != AC_JACK_PORT_NONE)
				spec->dig_in_nid = CMI_DIG_IN_NID;
			spec->multiout.max_channels = 8;
		}
		snd_hda_parse_pin_def_config(codec, &cfg);
		if (cfg.line_outs) {
			spec->multiout.max_channels = cfg.line_outs * 2;
			cmi9880_fill_multi_dac_nids(codec, &cfg);
			cmi9880_fill_multi_init(codec, &cfg);
		} else
			snd_printd("patch_cmedia: cannot detect association in defcfg\n");
		break;
		}
	}

	spec->multiout.num_dacs = spec->num_dacs;
	spec->multiout.dac_nids = spec->dac_nids;

	spec->adc_nids = cmi9880_adc_nids;

	codec->patch_ops = cmi9880_patch_ops;

	return 0;
}

/*
 * patch entries
 */
struct hda_codec_preset snd_hda_preset_cmedia[] = {
	{ .id = 0x13f69880, .name = "CMI9880", .patch = patch_cmi9880 },
 	{ .id = 0x434d4980, .name = "CMI9880", .patch = patch_cmi9880 },
	{} /* terminator */
};