mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 07:22:33 +00:00
114 lines
3.3 KiB
Diff
114 lines
3.3 KiB
Diff
From 5bef4e8125d09443b5486971d5550ed285cde4b1 Mon Sep 17 00:00:00 2001
|
|
From: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
|
|
Date: Mon, 1 Mar 2021 19:09:01 +0200
|
|
Subject: [PATCH 151/247] ASoC: mchp-i2s-mcc: Add multi-channel support for I2S
|
|
and LEFT_J formats
|
|
|
|
The latest I2S-MCC available in SAMA7G5 supports multi-channel for I2S and
|
|
Left-Justified formats. For this, the new version uses 8 (4 * 2) input and
|
|
output pins, with each pin being responsible for 2 channels. This sums up
|
|
to a total of 8 channels for synchronous capture and playback.
|
|
|
|
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
|
|
Link: https://lore.kernel.org/r/20210301170905.835091-4-codrin.ciubotariu@microchip.com
|
|
Signed-off-by: Mark Brown <broonie@kernel.org>
|
|
---
|
|
sound/soc/atmel/mchp-i2s-mcc.c | 38 ++++++++++++++++++++++++++++++++++
|
|
1 file changed, 38 insertions(+)
|
|
|
|
--- a/sound/soc/atmel/mchp-i2s-mcc.c
|
|
+++ b/sound/soc/atmel/mchp-i2s-mcc.c
|
|
@@ -16,6 +16,7 @@
|
|
#include <linux/clk.h>
|
|
#include <linux/mfd/syscon.h>
|
|
#include <linux/lcm.h>
|
|
+#include <linux/of_device.h>
|
|
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
@@ -225,6 +226,10 @@ static const struct regmap_config mchp_i
|
|
.max_register = MCHP_I2SMCC_VERSION,
|
|
};
|
|
|
|
+struct mchp_i2s_mcc_soc_data {
|
|
+ unsigned int data_pin_pair_num;
|
|
+};
|
|
+
|
|
struct mchp_i2s_mcc_dev {
|
|
struct wait_queue_head wq_txrdy;
|
|
struct wait_queue_head wq_rxrdy;
|
|
@@ -232,6 +237,7 @@ struct mchp_i2s_mcc_dev {
|
|
struct regmap *regmap;
|
|
struct clk *pclk;
|
|
struct clk *gclk;
|
|
+ const struct mchp_i2s_mcc_soc_data *soc;
|
|
struct snd_dmaengine_dai_dma_data playback;
|
|
struct snd_dmaengine_dai_dma_data capture;
|
|
unsigned int fmt;
|
|
@@ -549,6 +555,17 @@ static int mchp_i2s_mcc_hw_params(struct
|
|
}
|
|
|
|
if (dev->fmt & (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_LEFT_J)) {
|
|
+ /* for I2S and LEFT_J one pin is needed for every 2 channels */
|
|
+ if (channels > dev->soc->data_pin_pair_num * 2) {
|
|
+ dev_err(dev->dev,
|
|
+ "unsupported number of audio channels: %d\n",
|
|
+ channels);
|
|
+ return -EINVAL;
|
|
+ }
|
|
+
|
|
+ /* enable for interleaved format */
|
|
+ mrb |= MCHP_I2SMCC_MRB_CRAMODE_REGULAR;
|
|
+
|
|
switch (channels) {
|
|
case 1:
|
|
if (is_playback)
|
|
@@ -558,6 +575,12 @@ static int mchp_i2s_mcc_hw_params(struct
|
|
break;
|
|
case 2:
|
|
break;
|
|
+ case 4:
|
|
+ mra |= MCHP_I2SMCC_MRA_WIRECFG_I2S_2_TDM_1;
|
|
+ break;
|
|
+ case 8:
|
|
+ mra |= MCHP_I2SMCC_MRA_WIRECFG_I2S_4_TDM_2;
|
|
+ break;
|
|
default:
|
|
dev_err(dev->dev, "unsupported number of audio channels\n");
|
|
return -EINVAL;
|
|
@@ -869,12 +892,22 @@ static const struct snd_soc_component_dr
|
|
};
|
|
|
|
#ifdef CONFIG_OF
|
|
+static struct mchp_i2s_mcc_soc_data mchp_i2s_mcc_sam9x60 = {
|
|
+ .data_pin_pair_num = 1,
|
|
+};
|
|
+
|
|
+static struct mchp_i2s_mcc_soc_data mchp_i2s_mcc_sama7g5 = {
|
|
+ .data_pin_pair_num = 4,
|
|
+};
|
|
+
|
|
static const struct of_device_id mchp_i2s_mcc_dt_ids[] = {
|
|
{
|
|
.compatible = "microchip,sam9x60-i2smcc",
|
|
+ .data = &mchp_i2s_mcc_sam9x60,
|
|
},
|
|
{
|
|
.compatible = "microchip,sama7g5-i2smcc",
|
|
+ .data = &mchp_i2s_mcc_sama7g5,
|
|
},
|
|
{ /* sentinel */ }
|
|
};
|
|
@@ -932,6 +965,11 @@ static int mchp_i2s_mcc_probe(struct pla
|
|
dev->gclk = NULL;
|
|
}
|
|
|
|
+ dev->soc = of_device_get_match_data(&pdev->dev);
|
|
+ if (!dev->soc) {
|
|
+ dev_err(&pdev->dev, "failed to get soc data\n");
|
|
+ return -ENODEV;
|
|
+ }
|
|
dev->dev = &pdev->dev;
|
|
dev->regmap = regmap;
|
|
platform_set_drvdata(pdev, dev);
|