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Message-Id: <20180727023728.7810-1-suzuki.katsuhiro@socionext.com>
Date: Fri, 27 Jul 2018 11:37:28 +0900
From: Katsuhiro Suzuki <suzuki.katsuhiro@...ionext.com>
To: Mark Brown <broonie@...nel.org>, alsa-devel@...a-project.org
Cc: Masami Hiramatsu <masami.hiramatsu@...aro.org>,
Jassi Brar <jaswinder.singh@...aro.org>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Katsuhiro Suzuki <suzuki.katsuhiro@...ionext.com>
Subject: [PATCH] ASoC: uniphier: add support for multichannel output
This patch adds multichannel PCM output support for LD11/LD20.
Currently driver tested and supported only 2ch, 6ch, and 8ch.
Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@...ionext.com>
---
sound/soc/uniphier/aio-core.c | 78 ++++++++++++++++++++++++++++++++---
sound/soc/uniphier/aio-ld11.c | 2 +-
sound/soc/uniphier/aio-reg.h | 1 +
sound/soc/uniphier/aio.h | 3 ++
4 files changed, 78 insertions(+), 6 deletions(-)
diff --git a/sound/soc/uniphier/aio-core.c b/sound/soc/uniphier/aio-core.c
index 638cb3fc5f7b..8b09bbb0f8d0 100644
--- a/sound/soc/uniphier/aio-core.c
+++ b/sound/soc/uniphier/aio-core.c
@@ -264,6 +264,57 @@ void aio_port_reset(struct uniphier_aio_sub *sub)
}
}
+/**
+ * aio_port_set_ch - set channels of LPCM
+ * @sub: the AIO substream pointer, PCM substream only
+ * @ch : count of channels
+ *
+ * Set suitable slot selecting to input/output port block of AIO.
+ *
+ * This function may return error if non-PCM substream.
+ *
+ * Return: Zero if successful, otherwise a negative value on error.
+ */
+static int aio_port_set_ch(struct uniphier_aio_sub *sub)
+{
+ struct regmap *r = sub->aio->chip->regmap;
+ u32 slotsel_2ch[] = {
+ 0, 0, 0, 0, 0,
+ };
+ u32 slotsel_multi[] = {
+ OPORTMXTYSLOTCTR_SLOTSEL_SLOT0,
+ OPORTMXTYSLOTCTR_SLOTSEL_SLOT1,
+ OPORTMXTYSLOTCTR_SLOTSEL_SLOT2,
+ OPORTMXTYSLOTCTR_SLOTSEL_SLOT3,
+ OPORTMXTYSLOTCTR_SLOTSEL_SLOT4,
+ };
+ u32 mode, *slotsel;
+ int i;
+
+ switch (params_channels(&sub->params)) {
+ case 8:
+ case 6:
+ mode = OPORTMXTYSLOTCTR_MODE;
+ slotsel = slotsel_multi;
+ break;
+ case 2:
+ mode = 0;
+ slotsel = slotsel_2ch;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ for (i = 0; i < AUD_MAX_SLOTSEL; i++) {
+ regmap_update_bits(r, OPORTMXTYSLOTCTR(sub->swm->oport.map, i),
+ OPORTMXTYSLOTCTR_MODE, mode);
+ regmap_update_bits(r, OPORTMXTYSLOTCTR(sub->swm->oport.map, i),
+ OPORTMXTYSLOTCTR_SLOTSEL_MASK, slotsel[i]);
+ }
+
+ return 0;
+}
+
/**
* aio_port_set_rate - set sampling rate of LPCM
* @sub: the AIO substream pointer, PCM substream only
@@ -575,6 +626,10 @@ int aio_port_set_param(struct uniphier_aio_sub *sub, int pass_through,
rate = params_rate(params);
}
+ ret = aio_port_set_ch(sub);
+ if (ret)
+ return ret;
+
ret = aio_port_set_rate(sub, rate);
if (ret)
return ret;
@@ -731,15 +786,28 @@ void aio_port_set_volume(struct uniphier_aio_sub *sub, int vol)
int aio_if_set_param(struct uniphier_aio_sub *sub, int pass_through)
{
struct regmap *r = sub->aio->chip->regmap;
- u32 v;
+ u32 memfmt, v;
if (sub->swm->dir == PORT_DIR_OUTPUT) {
- if (pass_through)
+ if (pass_through) {
v = PBOUTMXCTR0_ENDIAN_0123 |
PBOUTMXCTR0_MEMFMT_STREAM;
- else
- v = PBOUTMXCTR0_ENDIAN_3210 |
- PBOUTMXCTR0_MEMFMT_2CH;
+ } else {
+ switch (params_channels(&sub->params)) {
+ case 2:
+ memfmt = PBOUTMXCTR0_MEMFMT_2CH;
+ break;
+ case 6:
+ memfmt = PBOUTMXCTR0_MEMFMT_6CH;
+ break;
+ case 8:
+ memfmt = PBOUTMXCTR0_MEMFMT_8CH;
+ break;
+ default:
+ return -EINVAL;
+ }
+ v = PBOUTMXCTR0_ENDIAN_3210 | memfmt;
+ }
regmap_write(r, PBOUTMXCTR0(sub->swm->oif.map), v);
regmap_write(r, PBOUTMXCTR1(sub->swm->oif.map), 0);
diff --git a/sound/soc/uniphier/aio-ld11.c b/sound/soc/uniphier/aio-ld11.c
index ab04d3331be9..de962df245ba 100644
--- a/sound/soc/uniphier/aio-ld11.c
+++ b/sound/soc/uniphier/aio-ld11.c
@@ -286,7 +286,7 @@ static struct snd_soc_dai_driver uniphier_aio_dai_ld11[] = {
.formats = SNDRV_PCM_FMTBIT_S32_LE,
.rates = SNDRV_PCM_RATE_48000,
.channels_min = 2,
- .channels_max = 2,
+ .channels_max = 8,
},
.ops = &uniphier_aio_i2s_ops,
},
diff --git a/sound/soc/uniphier/aio-reg.h b/sound/soc/uniphier/aio-reg.h
index 45fdc6ae358a..734395dbcffb 100644
--- a/sound/soc/uniphier/aio-reg.h
+++ b/sound/soc/uniphier/aio-reg.h
@@ -374,6 +374,7 @@
#define OPORTMXTYVOLGAINSTATUS(n, m) (0x42108 + 0x400 * (n) + 0x20 * (m))
#define OPORTMXTYVOLGAINSTATUS_CUR_MASK GENMASK(15, 0)
#define OPORTMXTYSLOTCTR(n, m) (0x42114 + 0x400 * (n) + 0x20 * (m))
+#define OPORTMXTYSLOTCTR_MODE BIT(15)
#define OPORTMXTYSLOTCTR_SLOTSEL_MASK GENMASK(11, 8)
#define OPORTMXTYSLOTCTR_SLOTSEL_SLOT0 (0x8 << 8)
#define OPORTMXTYSLOTCTR_SLOTSEL_SLOT1 (0x9 << 8)
diff --git a/sound/soc/uniphier/aio.h b/sound/soc/uniphier/aio.h
index aa89c2f6fa24..23a5c3c68658 100644
--- a/sound/soc/uniphier/aio.h
+++ b/sound/soc/uniphier/aio.h
@@ -141,6 +141,9 @@ enum IEC61937_PC {
#define AUD_MIN_FRAGMENT_SIZE (4 * 1024)
#define AUD_MAX_FRAGMENT_SIZE (16 * 1024)
+/* max 5 slots, 10 channels, 2 channel in 1 slot */
+#define AUD_MAX_SLOTSEL 5
+
/*
* This is a selector for virtual register map of AIO.
*
--
2.18.0
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