android-mainline/ANDROID-SoC-core-Introduce-macro-SOC_SINGLE_MULTI_EXT.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Meng Wang <mwang@codeaurora.org>
Date: Wed, 6 Sep 2017 10:21:14 +0800
Subject: ANDROID: SoC: core: Introduce macro SOC_SINGLE_MULTI_EXT

For some of the mixer controls, client would like to register
count as a parameter. Macro adds support to specify the count.

[CPNOTE: 19/07/21] Lee: Requested status via the bug

BUG: 144610828
Change-Id: I26343af2e4a35952d93dc2d5fa0caad2a3e50ffe
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
Signed-off-by: Meng Wang <mwang@codeaurora.org>
---
 include/sound/soc.h  | 15 +++++++++++++++
 sound/soc/soc-core.c | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)

diff --git a/include/sound/soc.h b/include/sound/soc.h
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -239,6 +239,14 @@
 	.get = xhandler_get, .put = xhandler_put, \
 	.private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
 					    xmax, xinvert) }
+#define SOC_SINGLE_MULTI_EXT(xname, xreg, xshift, xmax, xinvert, xcount,\
+	xhandler_get, xhandler_put) \
+{	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+	.info = snd_soc_info_multi_ext, \
+	.get = xhandler_get, .put = xhandler_put, \
+	.private_value = (unsigned long)&(struct soc_multi_mixer_control) \
+		{.reg = xreg, .shift = xshift, .rshift = xshift, .max = xmax, \
+		.count = xcount, .platform_max = xmax, .invert = xinvert} }
 #define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
 	 xhandler_get, xhandler_put, tlv_array) \
 {	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
@@ -575,6 +583,8 @@ int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol);
 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol);
+int snd_soc_info_multi_ext(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_info *uinfo);
 
 /* SoC PCM stream information */
 struct snd_soc_pcm_stream {
@@ -1139,6 +1149,11 @@ struct soc_mreg_control {
 	unsigned int regbase, regcount, nbits, invert;
 };
 
+struct soc_multi_mixer_control {
+	int min, max, platform_max, count;
+	unsigned int reg, rreg, shift, rshift, invert;
+};
+
 /* enumerated kcontrol */
 struct soc_enum {
 	int reg;
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3174,6 +3174,39 @@ int snd_soc_get_dai_id(struct device_node *ep)
 }
 EXPORT_SYMBOL_GPL(snd_soc_get_dai_id);
 
+/**
+ * snd_soc_info_multi_ext - external single mixer info callback
+ * @kcontrol: mixer control
+ * @uinfo: control element information
+ *
+ * Callback to provide information about a single external mixer control.
+ * that accepts multiple input.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_info_multi_ext(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_info *uinfo)
+{
+	struct soc_multi_mixer_control *mc =
+		(struct soc_multi_mixer_control *)kcontrol->private_value;
+	int platform_max;
+
+	if (!mc->platform_max)
+		mc->platform_max = mc->max;
+	platform_max = mc->platform_max;
+
+	if (platform_max == 1 && !strnstr(kcontrol->id.name, " Volume", 30))
+		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	else
+		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+
+	uinfo->count = mc->count;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = platform_max;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_info_multi_ext);
+
 int snd_soc_get_dai_name(const struct of_phandle_args *args,
 				const char **dai_name)
 {