mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 08:51:13 +00:00
77 lines
1.9 KiB
Diff
77 lines
1.9 KiB
Diff
|
From e28e3e0d01c0fcb628e841977b51c45189b43f47 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Viorel Suman <viorel.suman@nxp.com>
|
||
|
|
Date: Thu, 8 Mar 2018 14:37:30 +0200
|
||
|
|
Subject: [PATCH] MLK-17580: ASoC: fsl: dsd: Add DSD utilities helper
|
||
|
|
|
||
|
|
Add DSD utilities helper.
|
||
|
|
|
||
|
|
Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
|
||
|
|
Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com
|
||
|
|
---
|
||
|
|
sound/soc/fsl/fsl_dsd.h | 59 +++++++++++++++++++++++++++++++++++++++++++++++++
|
||
|
|
1 file changed, 59 insertions(+)
|
||
|
|
create mode 100644 sound/soc/fsl/fsl_dsd.h
|
||
|
|
|
||
|
|
--- /dev/null
|
||
|
|
+++ b/sound/soc/fsl/fsl_dsd.h
|
||
|
|
@@ -0,0 +1,59 @@
|
||
|
|
+/*
|
||
|
|
+ * Copyright 2018 NXP
|
||
|
|
+ *
|
||
|
|
+ * This program is free software; you can redistribute it and/or modify
|
||
|
|
+ * it under the terms of the GNU General Public License version 2 as
|
||
|
|
+ * published by the Free Software Foundation.
|
||
|
|
+ */
|
||
|
|
+
|
||
|
|
+#ifndef __FSL_DSD_H
|
||
|
|
+#define __FSL_DSD_H
|
||
|
|
+
|
||
|
|
+#include <linux/pinctrl/consumer.h>
|
||
|
|
+#include <sound/pcm_params.h>
|
||
|
|
+#include <sound/soc.h>
|
||
|
|
+
|
||
|
|
+static bool fsl_is_dsd(struct snd_pcm_hw_params *params)
|
||
|
|
+{
|
||
|
|
+ snd_pcm_format_t format = params_format(params);
|
||
|
|
+
|
||
|
|
+ switch (format) {
|
||
|
|
+ case SNDRV_PCM_FORMAT_DSD_U8:
|
||
|
|
+ case SNDRV_PCM_FORMAT_DSD_U16_LE:
|
||
|
|
+ case SNDRV_PCM_FORMAT_DSD_U16_BE:
|
||
|
|
+ case SNDRV_PCM_FORMAT_DSD_U32_LE:
|
||
|
|
+ case SNDRV_PCM_FORMAT_DSD_U32_BE:
|
||
|
|
+ return true;
|
||
|
|
+ default:
|
||
|
|
+ return false;
|
||
|
|
+ }
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+static struct pinctrl_state *fsl_get_pins_state(struct pinctrl *pinctrl,
|
||
|
|
+ struct snd_pcm_hw_params *params)
|
||
|
|
+{
|
||
|
|
+ int dsd_bclk;
|
||
|
|
+ struct pinctrl_state *state = 0;
|
||
|
|
+
|
||
|
|
+ if (fsl_is_dsd(params)) {
|
||
|
|
+ dsd_bclk = params_rate(params) * params_physical_width(params);
|
||
|
|
+
|
||
|
|
+ switch (dsd_bclk) {
|
||
|
|
+ case 22579200: /* DSD512 */
|
||
|
|
+ state = pinctrl_lookup_state(pinctrl, "dsd512");
|
||
|
|
+ break;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ /* Get default DSD state */
|
||
|
|
+ if (IS_ERR_OR_NULL(state))
|
||
|
|
+ state = pinctrl_lookup_state(pinctrl, "dsd");
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ /* Get default state */
|
||
|
|
+ if (IS_ERR_OR_NULL(state))
|
||
|
|
+ state = pinctrl_lookup_state(pinctrl, "default");
|
||
|
|
+
|
||
|
|
+ return state;
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+#endif /* __FSL_DSD_H */
|