[ALSA] hda-codec - Add test model for ALC268

This implements a test model for the ALC268.  It depends on the feature
added by alc260-test-eapd-0.2.diff.  This patch also adds a mention of
the ALC260 test model to ALSA-Configuration.txt since this seems to have
been missed.
Signed-off-by: Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

Documentation/sound/alsa/ALSA-Configuration.txt

@@ -801,6 +801,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	  will		Will laptops (PB V7900)
 	  replacer	Replacer 672V
 	  basic		fixed pin assignment (old default model)
+	  test		for testing/debugging purpose, almost all controls can
+			adjusted.  Appearing only when compiled with
+			$CONFIG_SND_DEBUG=y
 	  auto		auto-config reading BIOS (default)
 
 	ALC262
@@ -821,6 +824,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	  3stack	3-stack model
 	  toshiba	Toshiba A205
 	  acer		Acer laptops
+	  test		for testing/debugging purpose, almost all controls can
+			adjusted.  Appearing only when compiled with
+			$CONFIG_SND_DEBUG=y
 	  auto		auto-config reading BIOS (default)
 
 	ALC662

sound/pci/hda/patch_realtek.c

@@ -106,6 +106,9 @@ enum {
 	ALC268_3ST,
 	ALC268_TOSHIBA,
 	ALC268_ACER,
+#ifdef CONFIG_SND_DEBUG
+	ALC268_TEST,
+#endif
 	ALC268_AUTO,
 	ALC268_MODEL_LAST /* last tag */
 };
@@ -9366,6 +9369,60 @@ static struct hda_input_mux alc268_capture_source = {
 	},
 };
 
+#ifdef CONFIG_SND_DEBUG
+static struct snd_kcontrol_new alc268_test_mixer[] = {
+	HDA_CODEC_VOLUME("Front Playback Volume", 0x2, 0x0, HDA_OUTPUT),
+	HDA_CODEC_MUTE("Front Playback Switch", 0x14, 0x0, HDA_OUTPUT),
+	HDA_CODEC_VOLUME("Headphone Playback Volume", 0x3, 0x0, HDA_OUTPUT),
+	HDA_CODEC_MUTE("Headphone Playback Switch", 0x15, 0x0, HDA_OUTPUT),
+
+	/* Volume widgets */
+	HDA_CODEC_VOLUME("LOUT1 Playback Volume", 0x02, 0x0, HDA_OUTPUT),
+	HDA_CODEC_VOLUME("LOUT2 Playback Volume", 0x03, 0x0, HDA_OUTPUT),
+	HDA_BIND_MUTE_MONO("Mono sum Playback Switch", 0x0e, 1, 2, HDA_INPUT),
+	HDA_BIND_MUTE("LINE-OUT sum Playback Switch", 0x0f, 2, HDA_INPUT),
+	HDA_BIND_MUTE("HP-OUT sum Playback Switch", 0x10, 2, HDA_INPUT),
+	HDA_BIND_MUTE("LINE-OUT Playback Switch", 0x14, 2, HDA_OUTPUT),
+	HDA_BIND_MUTE("HP-OUT Playback Switch", 0x15, 2, HDA_OUTPUT),
+	HDA_BIND_MUTE("Mono Playback Switch", 0x16, 2, HDA_OUTPUT),
+	HDA_CODEC_VOLUME("MIC1 Capture Volume", 0x18, 0x0, HDA_INPUT),
+	HDA_BIND_MUTE("MIC1 Capture Switch", 0x18, 2, HDA_OUTPUT),
+	HDA_CODEC_VOLUME("MIC2 Capture Volume", 0x19, 0x0, HDA_INPUT),
+	HDA_CODEC_VOLUME("LINE1 Capture Volume", 0x1a, 0x0, HDA_INPUT),
+	HDA_BIND_MUTE("LINE1 Capture Switch", 0x1a, 2, HDA_OUTPUT),
+	HDA_CODEC_VOLUME("PCBEEP Playback Volume", 0x1d, 0x0, HDA_INPUT),
+	HDA_CODEC_VOLUME("PCM-IN1 Capture Volume", 0x23, 0x0, HDA_OUTPUT),
+	HDA_BIND_MUTE("PCM-IN1 Capture Switch", 0x23, 2, HDA_OUTPUT),
+	HDA_CODEC_VOLUME("PCM-IN2 Capture Volume", 0x24, 0x0, HDA_OUTPUT),
+	HDA_BIND_MUTE("PCM-IN2 Capture Switch", 0x24, 2, HDA_OUTPUT),
+
+	/* Modes for retasking pin widgets */
+	ALC_PIN_MODE("LINE-OUT pin mode", 0x14, ALC_PIN_DIR_INOUT),
+	ALC_PIN_MODE("HP-OUT pin mode", 0x15, ALC_PIN_DIR_INOUT),
+	ALC_PIN_MODE("MIC1 pin mode", 0x18, ALC_PIN_DIR_INOUT),
+	ALC_PIN_MODE("LINE1 pin mode", 0x1a, ALC_PIN_DIR_INOUT),
+
+	/* Controls for GPIO pins, assuming they are configured as outputs */
+	ALC_GPIO_DATA_SWITCH("GPIO pin 0", 0x01, 0x01),
+	ALC_GPIO_DATA_SWITCH("GPIO pin 1", 0x01, 0x02),
+	ALC_GPIO_DATA_SWITCH("GPIO pin 2", 0x01, 0x04),
+	ALC_GPIO_DATA_SWITCH("GPIO pin 3", 0x01, 0x08),
+
+	/* Switches to allow the digital SPDIF output pin to be enabled.
+	 * The ALC268 does not have an SPDIF input.
+	 */
+	ALC_SPDIF_CTRL_SWITCH("SPDIF Playback Switch", 0x06, 0x01),
+
+	/* A switch allowing EAPD to be enabled.  Some laptops seem to use
+	 * this output to turn on an external amplifier.
+	 */
+	ALC_EAPD_CTRL_SWITCH("LINE-OUT EAPD Enable Switch", 0x0f, 0x02),
+	ALC_EAPD_CTRL_SWITCH("HP-OUT EAPD Enable Switch", 0x10, 0x02),
+
+	{ } /* end */
+};
+#endif
+
 /* create input playback/capture controls for the given pin */
 static int alc268_new_analog_output(struct alc_spec *spec, hda_nid_t nid,
 				    const char *ctlname, int idx)
@@ -9578,6 +9635,9 @@ static const char *alc268_models[ALC268_MODEL_LAST] = {
 	[ALC268_3ST]		= "3stack",
 	[ALC268_TOSHIBA]	= "toshiba",
 	[ALC268_ACER]		= "acer",
+#ifdef CONFIG_SND_DEBUG
+	[ALC268_TEST]		= "test",
+#endif
 	[ALC268_AUTO]		= "auto",
 };
 
@@ -9636,6 +9696,22 @@ static struct alc_config_preset alc268_presets[] = {
 		.unsol_event = alc268_acer_unsol_event,
 		.init_hook = alc268_acer_init_hook,
 	},
+#ifdef CONFIG_SND_DEBUG
+	[ALC268_TEST] = {
+		.mixers = { alc268_test_mixer, alc268_capture_mixer },
+		.init_verbs = { alc268_base_init_verbs, alc268_eapd_verbs,
+				alc268_volume_init_verbs },
+		.num_dacs = ARRAY_SIZE(alc268_dac_nids),
+		.dac_nids = alc268_dac_nids,
+		.num_adc_nids = ARRAY_SIZE(alc268_adc_nids_alt),
+		.adc_nids = alc268_adc_nids_alt,
+		.hp_nid = 0x03,
+		.dig_out_nid = ALC268_DIGOUT_NID,
+		.num_channel_mode = ARRAY_SIZE(alc268_modes),
+		.channel_mode = alc268_modes,
+		.input_mux = &alc268_capture_source,
+	},
+#endif
 };
 
 static int patch_alc268(struct hda_codec *codec)