ALSA: hda - Cache pin-cap values

Added snd_hda_query_pin_caps() to read and cache pin-cap values
to avoid too frequently issuing the same verbs.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_codec.c

@@ -1052,6 +1052,7 @@ EXPORT_SYMBOL_HDA(snd_hda_codec_cleanup_stream);
 
 /* FIXME: more better hash key? */
 #define HDA_HASH_KEY(nid,dir,idx) (u32)((nid) + ((idx) << 16) + ((dir) << 24))
+#define HDA_HASH_PINCAP_KEY(nid) (u32)((nid) + (0x02 << 24))
 #define INFO_AMP_CAPS	(1<<0)
 #define INFO_AMP_VOL(ch)	(1 << (1 + (ch)))
 
@@ -1142,6 +1143,21 @@ int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
 }
 EXPORT_SYMBOL_HDA(snd_hda_override_amp_caps);
 
+u32 snd_hda_query_pin_caps(struct hda_codec *codec, hda_nid_t nid)
+{
+	struct hda_amp_info *info;
+
+	info = get_alloc_amp_hash(codec, HDA_HASH_PINCAP_KEY(nid));
+	if (!info)
+		return 0;
+	if (!info->head.val) {
+		info->amp_caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
+		info->head.val |= INFO_AMP_CAPS;
+	}
+	return info->amp_caps;
+}
+EXPORT_SYMBOL_HDA(snd_hda_query_pin_caps);
+
 /*
  * read the current volume to info
  * if the cache exists, read the cache value.

sound/pci/hda/hda_generic.c

@@ -144,7 +144,7 @@ static int add_new_node(struct hda_codec *codec, struct hda_gspec *spec, hda_nid
 	node->type = (node->wid_caps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
 
 	if (node->type == AC_WID_PIN) {
-		node->pin_caps = snd_hda_param_read(codec, node->nid, AC_PAR_PIN_CAP);
+		node->pin_caps = snd_hda_query_pin_caps(codec, node->nid);
 		node->pin_ctl = snd_hda_codec_read(codec, node->nid, 0, AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
 		node->def_cfg = snd_hda_codec_get_pincfg(codec, node->nid);
 	}

sound/pci/hda/hda_local.h

@@ -411,6 +411,7 @@ static inline u32 get_wcaps(struct hda_codec *codec, hda_nid_t nid)
 u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction);
 int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
 			      unsigned int caps);
+u32 snd_hda_query_pin_caps(struct hda_codec *codec, hda_nid_t nid);
 
 int snd_hda_ctl_add(struct hda_codec *codec, struct snd_kcontrol *kctl);
 void snd_hda_ctls_clear(struct hda_codec *codec);

sound/pci/hda/patch_realtek.c

@@ -770,7 +770,7 @@ static void alc_set_input_pin(struct hda_codec *codec, hda_nid_t nid,
 
 	if (auto_pin_type <= AUTO_PIN_FRONT_MIC) {
 		unsigned int pincap;
-		pincap = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
+		pincap = snd_hda_query_pin_caps(codec, nid);
 		pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
 		if (pincap & AC_PINCAP_VREF_80)
 			val = PIN_VREF80;
@@ -16746,13 +16746,13 @@ static int alc662_input_pin_idx(struct hda_codec *codec, hda_nid_t nid,
 
 static int alc662_is_input_pin(struct hda_codec *codec, hda_nid_t nid)
 {
-	unsigned int pincap = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
+	unsigned int pincap = snd_hda_query_pin_caps(codec, nid);
 	return (pincap & AC_PINCAP_IN) != 0;
 }
 
 static int alc662_is_output_pin(struct hda_codec *codec, hda_nid_t nid)
 {
-	unsigned int pincap = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
+	unsigned int pincap = snd_hda_query_pin_caps(codec, nid);
 	return (pincap & AC_PINCAP_OUT) != 0;
 }
 

sound/pci/hda/patch_sigmatel.c

@@ -2537,8 +2537,7 @@ static int stac92xx_build_pcms(struct hda_codec *codec)
 
 static unsigned int stac92xx_get_vref(struct hda_codec *codec, hda_nid_t nid)
 {
-	unsigned int pincap = snd_hda_param_read(codec, nid,
-						 AC_PAR_PIN_CAP);
+	unsigned int pincap = snd_hda_query_pin_caps(codec, nid);
 	pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
 	if (pincap & AC_PINCAP_VREF_100)
 		return AC_PINCTL_VREF_100;
@@ -2799,7 +2798,7 @@ static hda_nid_t check_line_out_switch(struct hda_codec *codec)
 	if (cfg->line_out_type != AUTO_PIN_LINE_OUT)
 		return 0;
 	nid = cfg->input_pins[AUTO_PIN_LINE];
-	pincap = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
+	pincap = snd_hda_query_pin_caps(codec, nid);
 	if (pincap & AC_PINCAP_OUT)
 		return nid;
 	return 0;
@@ -2822,7 +2821,7 @@ static hda_nid_t check_mic_out_switch(struct hda_codec *codec)
 		/* some laptops have an internal analog microphone
 		 * which can't be used as a output */
 		if (get_defcfg_connect(def_conf) != AC_JACK_PORT_FIXED) {
-			pincap = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
+			pincap = snd_hda_query_pin_caps(codec, nid);
 			if (pincap & AC_PINCAP_OUT)
 				return nid;
 		}