Platform driver glue for platforms using UDMA (am654 and j721e). Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx> --- sound/soc/ti/Kconfig | 4 ++++ sound/soc/ti/Makefile | 2 ++ sound/soc/ti/udma-pcm.c | 43 +++++++++++++++++++++++++++++++++++++++++ sound/soc/ti/udma-pcm.h | 18 +++++++++++++++++ 4 files changed, 67 insertions(+) create mode 100644 sound/soc/ti/udma-pcm.c create mode 100644 sound/soc/ti/udma-pcm.h diff --git a/sound/soc/ti/Kconfig b/sound/soc/ti/Kconfig index 29f61053ab62..bf85a160a523 100644 --- a/sound/soc/ti/Kconfig +++ b/sound/soc/ti/Kconfig @@ -10,6 +10,10 @@ config SND_SOC_TI_SDMA_PCM tristate select SND_SOC_GENERIC_DMAENGINE_PCM +config SND_SOC_TI_UDMA_PCM + tristate + select SND_SOC_GENERIC_DMAENGINE_PCM + comment "Texas Instruments DAI support for:" config SND_SOC_DAVINCI_ASP tristate "daVinci Audio Serial Port (ASP) or McBSP support" diff --git a/sound/soc/ti/Makefile b/sound/soc/ti/Makefile index 08c44d56ef3e..ea48c6679cc7 100644 --- a/sound/soc/ti/Makefile +++ b/sound/soc/ti/Makefile @@ -3,9 +3,11 @@ # Platform drivers snd-soc-ti-edma-objs := edma-pcm.o snd-soc-ti-sdma-objs := sdma-pcm.o +snd-soc-ti-udma-objs := udma-pcm.o obj-$(CONFIG_SND_SOC_TI_EDMA_PCM) += snd-soc-ti-edma.o obj-$(CONFIG_SND_SOC_TI_SDMA_PCM) += snd-soc-ti-sdma.o +obj-$(CONFIG_SND_SOC_TI_UDMA_PCM) += snd-soc-ti-udma.o # CPU DAI drivers snd-soc-davinci-asp-objs := davinci-i2s.o diff --git a/sound/soc/ti/udma-pcm.c b/sound/soc/ti/udma-pcm.c new file mode 100644 index 000000000000..39830caaaf7c --- /dev/null +++ b/sound/soc/ti/udma-pcm.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com + * Author: Peter Ujfalusi <peter.ujfalusi@xxxxxx> + */ + +#include <linux/module.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/dmaengine_pcm.h> + +#include "udma-pcm.h" + +static const struct snd_pcm_hardware udma_pcm_hardware = { + .info = SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME | + SNDRV_PCM_INFO_NO_PERIOD_WAKEUP | + SNDRV_PCM_INFO_INTERLEAVED, + .buffer_bytes_max = SIZE_MAX, + .period_bytes_min = 32, + .period_bytes_max = SZ_64K, + .periods_min = 2, + .periods_max = UINT_MAX, +}; + +static const struct snd_dmaengine_pcm_config udma_dmaengine_pcm_config = { + .pcm_hardware = &udma_pcm_hardware, + .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, +}; + +int udma_pcm_platform_register(struct device *dev) +{ + return devm_snd_dmaengine_pcm_register(dev, &udma_dmaengine_pcm_config, + 0); +} +EXPORT_SYMBOL_GPL(udma_pcm_platform_register); + +MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@xxxxxx>"); +MODULE_DESCRIPTION("UDMA PCM ASoC platform driver"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/ti/udma-pcm.h b/sound/soc/ti/udma-pcm.h new file mode 100644 index 000000000000..54111e7312c1 --- /dev/null +++ b/sound/soc/ti/udma-pcm.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com + */ + +#ifndef __UDMA_PCM_H__ +#define __UDMA_PCM_H__ + +#if IS_ENABLED(CONFIG_SND_SOC_TI_UDMA_PCM) +int udma_pcm_platform_register(struct device *dev); +#else +static inline int udma_pcm_platform_register(struct device *dev) +{ + return 0; +} +#endif /* CONFIG_SND_SOC_TI_UDMA_PCM */ + +#endif /* __UDMA_PCM_H__ */ -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
