[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/sound/soc/omap/sdma-pcm.c b/src/kernel/linux/v4.19/sound/soc/omap/sdma-pcm.c
new file mode 100644
index 0000000..21a9c24
--- /dev/null
+++ b/src/kernel/linux/v4.19/sound/soc/omap/sdma-pcm.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com
+ * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
+ */
+
+#include <linux/device.h>
+#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 <linux/omap-dmaengine.h>
+
+#include "sdma-pcm.h"
+
+static const struct snd_pcm_hardware sdma_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,
+ .period_bytes_min = 32,
+ .period_bytes_max = 64 * 1024,
+ .buffer_bytes_max = 128 * 1024,
+ .periods_min = 2,
+ .periods_max = 255,
+};
+
+static const struct snd_dmaengine_pcm_config sdma_dmaengine_pcm_config = {
+ .pcm_hardware = &sdma_pcm_hardware,
+ .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
+ .compat_filter_fn = omap_dma_filter_fn,
+ .prealloc_buffer_size = 128 * 1024,
+};
+
+int sdma_pcm_platform_register(struct device *dev,
+ char *txdmachan, char *rxdmachan)
+{
+ struct snd_dmaengine_pcm_config *config;
+ unsigned int flags = SND_DMAENGINE_PCM_FLAG_COMPAT;
+
+ /* Standard names for the directions: 'tx' and 'rx' */
+ if (!txdmachan && !rxdmachan)
+ return devm_snd_dmaengine_pcm_register(dev,
+ &sdma_dmaengine_pcm_config,
+ flags);
+
+ config = devm_kzalloc(dev, sizeof(*config), GFP_KERNEL);
+ if (!config)
+ return -ENOMEM;
+
+ *config = sdma_dmaengine_pcm_config;
+
+ if (!txdmachan || !rxdmachan) {
+ /* One direction only PCM */
+ flags |= SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX;
+ if (!txdmachan) {
+ txdmachan = rxdmachan;
+ rxdmachan = NULL;
+ }
+ }
+
+ config->chan_names[0] = txdmachan;
+ config->chan_names[1] = rxdmachan;
+
+ return devm_snd_dmaengine_pcm_register(dev, config, flags);
+}
+EXPORT_SYMBOL_GPL(sdma_pcm_platform_register);
+
+MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
+MODULE_DESCRIPTION("sDMA PCM ASoC platform driver");
+MODULE_LICENSE("GPL v2");