mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-10-22 17:44:26 -04:00
109 lines
3.5 KiB
Diff
109 lines
3.5 KiB
Diff
From 2bbdc5b38603384996271a8817b0578a2360af2f Mon Sep 17 00:00:00 2001
|
|
From: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
|
|
Date: Mon, 1 Mar 2021 19:09:03 +0200
|
|
Subject: [PATCH 152/247] ASoC: mchp-i2s-mcc: Add support to select TDM pins
|
|
|
|
SAMA7G5's I2S-MCC has 4 pairs of DIN/DOUT pins. Since TDM only uses a
|
|
single pair of pins for synchronous capture and playback, the controller
|
|
needs to be told which of the pair is connected. This can be mentioned
|
|
using the "microchip,tdm-data-pair" property from DT. The property is
|
|
optional, useful only if TDM is used. If it's missing, DIN/DOUT 0 pins
|
|
will be used by default.
|
|
|
|
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
|
|
Link: https://lore.kernel.org/r/20210301170905.835091-6-codrin.ciubotariu@microchip.com
|
|
Signed-off-by: Mark Brown <broonie@kernel.org>
|
|
---
|
|
sound/soc/atmel/mchp-i2s-mcc.c | 52 +++++++++++++++++++++++++++++++---
|
|
1 file changed, 48 insertions(+), 4 deletions(-)
|
|
|
|
--- a/sound/soc/atmel/mchp-i2s-mcc.c
|
|
+++ b/sound/soc/atmel/mchp-i2s-mcc.c
|
|
@@ -100,6 +100,8 @@
|
|
#define MCHP_I2SMCC_MRA_DATALENGTH_8_BITS_COMPACT (7 << 1)
|
|
|
|
#define MCHP_I2SMCC_MRA_WIRECFG_MASK GENMASK(5, 4)
|
|
+#define MCHP_I2SMCC_MRA_WIRECFG_TDM(pin) (((pin) << 4) & \
|
|
+ MCHP_I2SMCC_MRA_WIRECFG_MASK)
|
|
#define MCHP_I2SMCC_MRA_WIRECFG_I2S_1_TDM_0 (0 << 4)
|
|
#define MCHP_I2SMCC_MRA_WIRECFG_I2S_2_TDM_1 (1 << 4)
|
|
#define MCHP_I2SMCC_MRA_WIRECFG_I2S_4_TDM_2 (2 << 4)
|
|
@@ -245,6 +247,7 @@ struct mchp_i2s_mcc_dev {
|
|
unsigned int frame_length;
|
|
int tdm_slots;
|
|
int channels;
|
|
+ u8 tdm_data_pair;
|
|
unsigned int gclk_use:1;
|
|
unsigned int gclk_running:1;
|
|
unsigned int tx_rdy:1;
|
|
@@ -589,6 +592,8 @@ static int mchp_i2s_mcc_hw_params(struct
|
|
if (!frame_length)
|
|
frame_length = 2 * params_physical_width(params);
|
|
} else if (dev->fmt & SND_SOC_DAIFMT_DSP_A) {
|
|
+ mra |= MCHP_I2SMCC_MRA_WIRECFG_TDM(dev->tdm_data_pair);
|
|
+
|
|
if (dev->tdm_slots) {
|
|
if (channels % 2 && channels * 2 <= dev->tdm_slots) {
|
|
/*
|
|
@@ -914,6 +919,45 @@ static const struct of_device_id mchp_i2
|
|
MODULE_DEVICE_TABLE(of, mchp_i2s_mcc_dt_ids);
|
|
#endif
|
|
|
|
+static int mchp_i2s_mcc_soc_data_parse(struct platform_device *pdev,
|
|
+ struct mchp_i2s_mcc_dev *dev)
|
|
+{
|
|
+ int err;
|
|
+
|
|
+ if (!dev->soc) {
|
|
+ dev_err(&pdev->dev, "failed to get soc data\n");
|
|
+ return -ENODEV;
|
|
+ }
|
|
+
|
|
+ if (dev->soc->data_pin_pair_num == 1)
|
|
+ return 0;
|
|
+
|
|
+ err = of_property_read_u8(pdev->dev.of_node, "microchip,tdm-data-pair",
|
|
+ &dev->tdm_data_pair);
|
|
+ if (err < 0 && err != -EINVAL) {
|
|
+ dev_err(&pdev->dev,
|
|
+ "bad property data for 'microchip,tdm-data-pair': %d",
|
|
+ err);
|
|
+ return err;
|
|
+ }
|
|
+ if (err == -EINVAL) {
|
|
+ dev_info(&pdev->dev,
|
|
+ "'microchip,tdm-data-pair' not found; assuming DIN/DOUT 0 for TDM\n");
|
|
+ dev->tdm_data_pair = 0;
|
|
+ } else {
|
|
+ if (dev->tdm_data_pair > dev->soc->data_pin_pair_num - 1) {
|
|
+ dev_err(&pdev->dev,
|
|
+ "invalid value for 'microchip,tdm-data-pair': %d\n",
|
|
+ dev->tdm_data_pair);
|
|
+ return -EINVAL;
|
|
+ }
|
|
+ dev_dbg(&pdev->dev, "TMD format on DIN/DOUT %d pins\n",
|
|
+ dev->tdm_data_pair);
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
static int mchp_i2s_mcc_probe(struct platform_device *pdev)
|
|
{
|
|
struct mchp_i2s_mcc_dev *dev;
|
|
@@ -966,10 +1010,10 @@ static int mchp_i2s_mcc_probe(struct pla
|
|
}
|
|
|
|
dev->soc = of_device_get_match_data(&pdev->dev);
|
|
- if (!dev->soc) {
|
|
- dev_err(&pdev->dev, "failed to get soc data\n");
|
|
- return -ENODEV;
|
|
- }
|
|
+ err = mchp_i2s_mcc_soc_data_parse(pdev, dev);
|
|
+ if (err < 0)
|
|
+ return err;
|
|
+
|
|
dev->dev = &pdev->dev;
|
|
dev->regmap = regmap;
|
|
platform_set_drvdata(pdev, dev);
|