ALSA: hda/ca0132: Add unsol handler for DSP and jack detection

This patch adds the unsolicited response handler for incoming DSP responses and
jack detection reporting, and routines for reading the incoming DSP response.

Signed-off-by: Ian Minett <ian_minett@creativelabs.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_ca0132.c

@@ -1172,6 +1172,59 @@ static int dspio_write_multiple(struct hda_codec *codec,
 	return status;
 }
 
+static int dspio_read(struct hda_codec *codec, unsigned int *data)
+{
+	int status;
+
+	status = dspio_send(codec, VENDOR_DSPIO_SCP_POST_READ_DATA, 0);
+	if (status == -EIO)
+		return status;
+
+	status = dspio_send(codec, VENDOR_DSPIO_STATUS, 0);
+	if (status == -EIO ||
+	    status == VENDOR_STATUS_DSPIO_SCP_RESPONSE_QUEUE_EMPTY)
+		return -EIO;
+
+	*data = snd_hda_codec_read(codec, WIDGET_DSP_CTRL, 0,
+				   VENDOR_DSPIO_SCP_READ_DATA, 0);
+
+	return 0;
+}
+
+static int dspio_read_multiple(struct hda_codec *codec, unsigned int *buffer,
+			       unsigned int *buf_size, unsigned int size_count)
+{
+	int status = 0;
+	unsigned int size = *buf_size;
+	unsigned int count;
+	unsigned int skip_count;
+	unsigned int dummy;
+
+	if ((buffer == NULL))
+		return -1;
+
+	count = 0;
+	while (count < size && count < size_count) {
+		status = dspio_read(codec, buffer++);
+		if (status != 0)
+			break;
+		count++;
+	}
+
+	skip_count = count;
+	if (status == 0) {
+		while (skip_count < size) {
+			status = dspio_read(codec, &dummy);
+			if (status != 0)
+				break;
+			skip_count++;
+		}
+	}
+	*buf_size = count;
+
+	return status;
+}
+
 /*
  * Construct the SCP header using corresponding fields
  */
@@ -1231,6 +1284,38 @@ struct scp_msg {
 	unsigned int data[SCP_MAX_DATA_WORDS];
 };
 
+static void dspio_clear_response_queue(struct hda_codec *codec)
+{
+	unsigned int dummy = 0;
+	int status = -1;
+
+	/* clear all from the response queue */
+	do {
+		status = dspio_read(codec, &dummy);
+	} while (status == 0);
+}
+
+static int dspio_get_response_data(struct hda_codec *codec)
+{
+	struct ca0132_spec *spec = codec->spec;
+	unsigned int data = 0;
+	unsigned int count;
+
+	if (dspio_read(codec, &data) < 0)
+		return -EIO;
+
+	if ((data & 0x00ffffff) == spec->wait_scp_header) {
+		spec->scp_resp_header = data;
+		spec->scp_resp_count = data >> 27;
+		count = spec->wait_num_data;
+		dspio_read_multiple(codec, spec->scp_resp_data,
+				    &spec->scp_resp_count, count);
+		return 0;
+	}
+
+	return -EIO;
+}
+
 /*
  * Send SCP message to DSP
  */
@@ -3743,6 +3828,12 @@ static int ca0132_build_controls(struct hda_codec *codec)
 	return 0;
 }
 
+static void ca0132_init_unsol(struct hda_codec *codec)
+{
+	snd_hda_jack_detect_enable(codec, UNSOL_TAG_HP, UNSOL_TAG_HP);
+	snd_hda_jack_detect_enable(codec, UNSOL_TAG_AMIC1, UNSOL_TAG_AMIC1);
+}
+
 static void refresh_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir)
 {
 	unsigned int caps;
@@ -4152,6 +4243,47 @@ static void ca0132_download_dsp(struct hda_codec *codec)
 		ca0132_set_dsp_msr(codec, true);
 }
 
+static void ca0132_process_dsp_response(struct hda_codec *codec)
+{
+	struct ca0132_spec *spec = codec->spec;
+
+	snd_printdd(KERN_INFO "ca0132_process_dsp_response\n");
+	if (spec->wait_scp) {
+		if (dspio_get_response_data(codec) >= 0)
+			spec->wait_scp = 0;
+	}
+
+	dspio_clear_response_queue(codec);
+}
+
+static void ca0132_unsol_event(struct hda_codec *codec, unsigned int res)
+{
+	snd_printdd(KERN_INFO "ca0132_unsol_event: 0x%x\n", res);
+
+
+	if (((res >> AC_UNSOL_RES_TAG_SHIFT) & 0x3f) == UNSOL_TAG_DSP) {
+		ca0132_process_dsp_response(codec);
+	} else {
+		res = snd_hda_jack_get_action(codec,
+				(res >> AC_UNSOL_RES_TAG_SHIFT) & 0x3f);
+
+		snd_printdd(KERN_INFO "snd_hda_jack_get_action: 0x%x\n", res);
+
+		switch (res) {
+		case UNSOL_TAG_HP:
+			ca0132_select_out(codec);
+			snd_hda_jack_report_sync(codec);
+			break;
+		case UNSOL_TAG_AMIC1:
+			ca0132_select_mic(codec);
+			snd_hda_jack_report_sync(codec);
+			break;
+		default:
+			break;
+		}
+	}
+}
+
 static int ca0132_init(struct hda_codec *codec)
 {
 	struct ca0132_spec *spec = codec->spec;
@@ -4187,9 +4319,13 @@ static int ca0132_init(struct hda_codec *codec)
 	for (i = 0; i < spec->num_init_verbs; i++)
 		snd_hda_sequence_write(codec, spec->init_verbs[i]);
 
+	ca0132_init_unsol(codec);
+
 	ca0132_select_out(codec);
 	ca0132_select_mic(codec);
 
+	snd_hda_jack_report_sync(codec);
+
 	snd_hda_power_down(codec);
 
 	return 0;
@@ -4211,11 +4347,13 @@ static struct hda_codec_ops ca0132_patch_ops = {
 	.build_pcms = ca0132_build_pcms,
 	.init = ca0132_init,
 	.free = ca0132_free,
+	.unsol_event = ca0132_unsol_event,
 };
 
 static int patch_ca0132(struct hda_codec *codec)
 {
 	struct ca0132_spec *spec;
+	int err;
 
 	snd_printdd("patch_ca0132\n");
 
@@ -4237,6 +4375,10 @@ static int patch_ca0132(struct hda_codec *codec)
 
 	ca0132_config(codec);
 
+	err = snd_hda_parse_pin_def_config(codec, &spec->autocfg, NULL);
+	if (err < 0)
+		return err;
+
 	codec->patch_ops = ca0132_patch_ops;
 
 	return 0;