diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/801-audio-0047-MLK-17580-ASoC-fsl-dsd-Add-DSD-utilities-helper.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/801-audio-0047-MLK-17580-ASoC-fsl-dsd-Add-DSD-utilities-helper.patch | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/801-audio-0047-MLK-17580-ASoC-fsl-dsd-Add-DSD-utilities-helper.patch b/target/linux/layerscape/patches-5.4/801-audio-0047-MLK-17580-ASoC-fsl-dsd-Add-DSD-utilities-helper.patch new file mode 100644 index 0000000000..9290b3b9cb --- /dev/null +++ b/target/linux/layerscape/patches-5.4/801-audio-0047-MLK-17580-ASoC-fsl-dsd-Add-DSD-utilities-helper.patch @@ -0,0 +1,76 @@ +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 */ |