linux-kernel - [PATCH v4 3/7] ASoC: core: add SOC_DOUBLE_RANGE

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Message-Id: <20240305-rk3308-audio-codec-v4-3-312acdbe628f@bootlin.com>
Date: Tue, 05 Mar 2024 15:36:30 +0100
From: Luca Ceresoli <luca.ceresoli@...tlin.com>
To: Nicolas Frattaroli <frattaroli.nicolas@...il.com>, 
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
 Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, 
 Heiko Stuebner <heiko@...ech.de>, Rob Herring <robh+dt@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>
Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 linux-rockchip@...ts.infradead.org, linux-sound@...r.kernel.org, 
 alsa-devel@...a-project.org, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 Luca Ceresoli <luca.ceresoli@...tlin.com>
Subject: [PATCH v4 3/7] ASoC: core: add SOC_DOUBLE_RANGE_TLV() helper macro

No macro currently allows handling a stereo control that has left and right
in the same register and whose minimum register value is not zero. Add one
that does that.

Note that even though the snd_soc_*_volsw_range() look more appropriate
given the _range suffix, they are not suitable because they don't honor the
two shift values. The snd_soc_*_volsw() look more generic and are suitable
for the task.

Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.com>

---

Changed in v4: nothing
Changed in v3: nothing

This patch is new in v2.
---
 include/sound/soc.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 6defc5547ff9..7492315ce0b8 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -149,6 +149,18 @@
 		{.reg = xreg, .rreg = xreg, \
 		.shift = shift_left, .rshift = shift_right, \
 		.max = xmax, .min = xmin} }
+#define SOC_DOUBLE_RANGE_TLV(xname, xreg, xshift_left, xshift_right, xmin, xmax, \
+			     xinvert, tlv_array) \
+{	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
+	.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
+		  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
+	.tlv.p = (tlv_array), \
+	.info = snd_soc_info_volsw, \
+	.get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
+	.private_value = (unsigned long)&(struct soc_mixer_control) \
+		{.reg = xreg, .rreg = xreg, \
+		 .shift = xshift_left, .rshift = xshift_right, \
+		 .min = xmin, .max = xmax, .invert = xinvert} }
 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
 {	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 	.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\

-- 
2.34.1