mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 10:39:04 +00:00
8c405cdccc
The patches were generated from the RPi repo with the following command: git format-patch v6.6.34..rpi-6.1.y Some patches needed rebasing and, as usual, the applied and reverted, wireless drivers, Github workflows, READMEs and defconfigs patches were removed. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
155 lines
4.7 KiB
Diff
155 lines
4.7 KiB
Diff
From 1c450e6957e905ac9e41490b738fe31fc0beb829 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.com>
|
|
Date: Mon, 3 Jul 2023 10:14:43 +0100
|
|
Subject: [PATCH 0547/1085] ASOC: dwc: Improve DMA shutdown
|
|
|
|
Disabling the I2S interface with outstanding transfers prevents the
|
|
DMAC from shutting down, so keep it partially active after a stop.
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
|
|
---
|
|
sound/soc/dwc/dwc-i2s.c | 87 +++++++++++++++++++++++++++++++----------
|
|
1 file changed, 67 insertions(+), 20 deletions(-)
|
|
|
|
--- a/sound/soc/dwc/dwc-i2s.c
|
|
+++ b/sound/soc/dwc/dwc-i2s.c
|
|
@@ -21,7 +21,7 @@
|
|
#include <linux/reset.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/pm_runtime.h>
|
|
-#include <sound/designware_i2s.h>
|
|
+#include <sound/designware_i2s.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <sound/soc.h>
|
|
@@ -208,15 +208,10 @@ static void i2s_start(struct dw_i2s_dev
|
|
i2s_write_reg(dev->i2s_base, CER, 1);
|
|
}
|
|
|
|
-static void i2s_stop(struct dw_i2s_dev *dev,
|
|
- struct snd_pcm_substream *substream)
|
|
+static void i2s_pause(struct dw_i2s_dev *dev, struct snd_pcm_substream *substream)
|
|
{
|
|
|
|
i2s_clear_irqs(dev, substream->stream);
|
|
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
- i2s_write_reg(dev->i2s_base, ITER, 0);
|
|
- else
|
|
- i2s_write_reg(dev->i2s_base, IRER, 0);
|
|
|
|
if (dev->use_pio || dev->is_jh7110)
|
|
i2s_disable_irqs(dev, substream->stream, 8);
|
|
@@ -225,23 +220,15 @@ static void i2s_stop(struct dw_i2s_dev *
|
|
|
|
if (!dev->active) {
|
|
i2s_write_reg(dev->i2s_base, CER, 0);
|
|
- i2s_write_reg(dev->i2s_base, IER, 0);
|
|
+ /* Keep the device enabled until the shutdown - do not clear IER */
|
|
}
|
|
}
|
|
|
|
-static int dw_i2s_startup(struct snd_pcm_substream *substream,
|
|
- struct snd_soc_dai *cpu_dai)
|
|
+static void i2s_stop(struct dw_i2s_dev *dev, struct snd_pcm_substream *substream)
|
|
{
|
|
- struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(cpu_dai);
|
|
-
|
|
- if (dev->is_jh7110) {
|
|
- struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
|
|
- struct snd_soc_dai_link *dai_link = rtd->dai_link;
|
|
-
|
|
- dai_link->trigger_stop = SND_SOC_TRIGGER_ORDER_LDC;
|
|
- }
|
|
+ i2s_clear_irqs(dev, substream->stream);
|
|
|
|
- return 0;
|
|
+ i2s_disable_irqs(dev, substream->stream, 8);
|
|
}
|
|
|
|
static void dw_i2s_config(struct dw_i2s_dev *dev, int stream)
|
|
@@ -354,6 +341,62 @@ static int dw_i2s_hw_params(struct snd_p
|
|
return 0;
|
|
}
|
|
|
|
+static int dw_i2s_startup(struct snd_pcm_substream *substream,
|
|
+ struct snd_soc_dai *cpu_dai)
|
|
+{
|
|
+ struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(cpu_dai);
|
|
+ union dw_i2s_snd_dma_data *dma_data = NULL;
|
|
+ u32 dmacr;
|
|
+
|
|
+ dev_dbg(dev->dev, "%s(%s)\n", __func__, substream->name);
|
|
+ if (!(dev->capability & DWC_I2S_RECORD) &&
|
|
+ substream->stream == SNDRV_PCM_STREAM_CAPTURE)
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (!(dev->capability & DWC_I2S_PLAY) &&
|
|
+ substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
+ return -EINVAL;
|
|
+
|
|
+ dw_i2s_config(dev, substream->stream);
|
|
+ dmacr = i2s_read_reg(dev->i2s_base, I2S_DMACR);
|
|
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
+ dma_data = &dev->play_dma_data;
|
|
+ else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
|
|
+ dma_data = &dev->capture_dma_data;
|
|
+
|
|
+ snd_soc_dai_set_dma_data(cpu_dai, substream, (void *)dma_data);
|
|
+ i2s_write_reg(dev->i2s_base, I2S_DMACR, dmacr);
|
|
+
|
|
+ if (dev->is_jh7110) {
|
|
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
|
|
+ struct snd_soc_dai_link *dai_link = rtd->dai_link;
|
|
+
|
|
+ dai_link->trigger_stop = SND_SOC_TRIGGER_ORDER_LDC;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void dw_i2s_shutdown(struct snd_pcm_substream *substream,
|
|
+ struct snd_soc_dai *dai)
|
|
+{
|
|
+ struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
|
|
+
|
|
+ dev_dbg(dev->dev, "%s(%s)\n", __func__, substream->name);
|
|
+ i2s_disable_channels(dev, substream->stream);
|
|
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
+ i2s_write_reg(dev->i2s_base, ITER, 0);
|
|
+ else
|
|
+ i2s_write_reg(dev->i2s_base, IRER, 0);
|
|
+
|
|
+ i2s_disable_irqs(dev, substream->stream, 8);
|
|
+
|
|
+ if (!dev->active) {
|
|
+ i2s_write_reg(dev->i2s_base, CER, 0);
|
|
+ i2s_write_reg(dev->i2s_base, IER, 0);
|
|
+ }
|
|
+}
|
|
+
|
|
static int dw_i2s_prepare(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
@@ -381,9 +424,12 @@ static int dw_i2s_trigger(struct snd_pcm
|
|
i2s_start(dev, substream);
|
|
break;
|
|
|
|
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
+ dev->active--;
|
|
+ i2s_pause(dev, substream);
|
|
+ break;
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
dev->active--;
|
|
i2s_stop(dev, substream);
|
|
break;
|
|
@@ -512,6 +558,7 @@ static int dw_i2s_dai_probe(struct snd_s
|
|
static const struct snd_soc_dai_ops dw_i2s_dai_ops = {
|
|
.probe = dw_i2s_dai_probe,
|
|
.startup = dw_i2s_startup,
|
|
+ .shutdown = dw_i2s_shutdown,
|
|
.hw_params = dw_i2s_hw_params,
|
|
.prepare = dw_i2s_prepare,
|
|
.trigger = dw_i2s_trigger,
|