mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
105 lines
3.3 KiB
Diff
105 lines
3.3 KiB
Diff
|
From f7045758fffa176ea68730ea855415e619bf516d Mon Sep 17 00:00:00 2001
|
||
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
||
|
|
Date: Sat, 3 Mar 2018 16:25:19 +0000
|
||
|
|
Subject: [PATCH 240/454] audioinjector-octo: Add continuous clock feature
|
||
|
|
|
||
|
|
By user request, add a switch to prevent the clocks being stopped when
|
||
|
|
the stream is paused, stopped or shutdown. Provide access to the switch
|
||
|
|
by adding a 'non-stop-clocks' parameter to the audioinjector-addons
|
||
|
|
overlay.
|
||
|
|
|
||
|
|
See: https://github.com/raspberrypi/linux/issues/2409
|
||
|
|
|
||
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
||
|
|
---
|
||
|
|
arch/arm/boot/dts/overlays/README | 5 +++--
|
||
|
|
.../overlays/audioinjector-addons-overlay.dts | 6 +++++-
|
||
|
|
sound/soc/bcm/audioinjector-octo-soundcard.c | 19 +++++++++++--------
|
||
|
|
3 files changed, 19 insertions(+), 11 deletions(-)
|
||
|
|
|
||
|
|
--- a/arch/arm/boot/dts/overlays/README
|
||
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
||
|
|
@@ -357,8 +357,9 @@ Params: interrupt GPIO use
|
||
|
|
|
||
|
|
Name: audioinjector-addons
|
||
|
|
Info: Configures the audioinjector.net audio add on soundcards
|
||
|
|
-Load: dtoverlay=audioinjector-addons
|
||
|
|
-Params: <None>
|
||
|
|
+Load: dtoverlay=audioinjector-addons,<param>=<val>
|
||
|
|
+Params: non-stop-clocks Keeps the clocks running even when the stream
|
||
|
|
+ is paused or stopped (default off)
|
||
|
|
|
||
|
|
|
||
|
|
Name: audioinjector-wm8731-audio
|
||
|
|
--- a/arch/arm/boot/dts/overlays/audioinjector-addons-overlay.dts
|
||
|
|
+++ b/arch/arm/boot/dts/overlays/audioinjector-addons-overlay.dts
|
||
|
|
@@ -42,7 +42,7 @@
|
||
|
|
|
||
|
|
fragment@2 {
|
||
|
|
target = <&sound>;
|
||
|
|
- __overlay__ {
|
||
|
|
+ snd: __overlay__ {
|
||
|
|
compatible = "ai,audioinjector-octo-soundcard";
|
||
|
|
mult-gpios = <&gpio 27 0>, <&gpio 22 0>, <&gpio 23 0>,
|
||
|
|
<&gpio 24 0>;
|
||
|
|
@@ -52,4 +52,8 @@
|
||
|
|
status = "okay";
|
||
|
|
};
|
||
|
|
};
|
||
|
|
+
|
||
|
|
+ __overrides__ {
|
||
|
|
+ non-stop-clocks = <&snd>, "non-stop-clocks?";
|
||
|
|
+ };
|
||
|
|
};
|
||
|
|
--- a/sound/soc/bcm/audioinjector-octo-soundcard.c
|
||
|
|
+++ b/sound/soc/bcm/audioinjector-octo-soundcard.c
|
||
|
|
@@ -29,6 +29,7 @@
|
||
|
|
static struct gpio_descs *mult_gpios;
|
||
|
|
static struct gpio_desc *codec_rst_gpio;
|
||
|
|
static unsigned int audioinjector_octo_rate;
|
||
|
|
+static bool non_stop_clocks;
|
||
|
|
|
||
|
|
static const unsigned int audioinjector_octo_rates[] = {
|
||
|
|
96000, 48000, 32000, 24000, 16000, 8000, 88200, 44100, 29400, 22050, 14700,
|
||
|
|
@@ -133,12 +134,16 @@ static int audioinjector_octo_hw_params(
|
||
|
|
static int audioinjector_octo_trigger(struct snd_pcm_substream *substream,
|
||
|
|
int cmd){
|
||
|
|
int mult[4];
|
||
|
|
- mult[0] = 0;
|
||
|
|
- mult[1] = 0;
|
||
|
|
- mult[2] = 0;
|
||
|
|
- mult[3] = 0;
|
||
|
|
+
|
||
|
|
+ memset(mult, 0, sizeof(mult));
|
||
|
|
|
||
|
|
switch (cmd) {
|
||
|
|
+ case SNDRV_PCM_TRIGGER_STOP:
|
||
|
|
+ case SNDRV_PCM_TRIGGER_SUSPEND:
|
||
|
|
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
||
|
|
+ if (!non_stop_clocks)
|
||
|
|
+ break;
|
||
|
|
+ /* Drop through... */
|
||
|
|
case SNDRV_PCM_TRIGGER_START:
|
||
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
||
|
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
||
|
|
@@ -177,10 +182,6 @@ static int audioinjector_octo_trigger(st
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
- case SNDRV_PCM_TRIGGER_STOP:
|
||
|
|
- case SNDRV_PCM_TRIGGER_SUSPEND:
|
||
|
|
- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
||
|
|
- break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
@@ -276,6 +277,8 @@ static int audioinjector_octo_probe(stru
|
||
|
|
if (IS_ERR(codec_rst_gpio))
|
||
|
|
return PTR_ERR(codec_rst_gpio);
|
||
|
|
|
||
|
|
+ non_stop_clocks = of_property_read_bool(pdev->dev.of_node, "non-stop-clocks");
|
||
|
|
+
|
||
|
|
if (codec_rst_gpio)
|
||
|
|
gpiod_set_value(codec_rst_gpio, 1);
|
||
|
|
msleep(500);
|