ASoC: amd: add vangogh i2s controller driver

Add Vangogh I2S controller driver to support two I2S controller
instances.

Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20210721180430.11571-9-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/amd/vangogh/acp5x-i2s.c b/sound/soc/amd/vangogh/acp5x-i2s.c
new file mode 100644 (file)
index 0000000..30b6510
--- /dev/null
+++ b/sound/soc/amd/vangogh/acp5x-i2s.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// AMD ALSA SoC PCM Driver
+//
+// Copyright (C) 2021 Advanced Micro Devices, Inc. All rights reserved.
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <linux/dma-mapping.h>
+
+#include "acp5x.h"
+
+#define DRV_NAME "acp5x_i2s_playcap"
+
+static const struct snd_soc_component_driver acp5x_dai_component = {
+       .name = "acp5x-i2s",
+};
+
+static struct snd_soc_dai_driver acp5x_i2s_dai = {
+       .playback = {
+               .rates = SNDRV_PCM_RATE_8000_96000,
+               .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+                       SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+               .channels_min = 2,
+               .channels_max = 2,
+               .rate_min = 8000,
+               .rate_max = 96000,
+       },
+       .capture = {
+               .rates = SNDRV_PCM_RATE_8000_96000,
+               .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+                       SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+               .channels_min = 2,
+               .channels_max = 2,
+               .rate_min = 8000,
+               .rate_max = 96000,
+       },
+};
+
+static int acp5x_dai_probe(struct platform_device *pdev)
+{
+       struct resource *res;
+       struct i2s_dev_data *adata;
+       int ret;
+
+       adata = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dev_data),
+                            GFP_KERNEL);
+       if (!adata)
+               return -ENOMEM;
+
+       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       if (!res) {
+               dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
+               return -ENOMEM;
+       }
+       adata->acp5x_base = devm_ioremap(&pdev->dev, res->start,
+                                        resource_size(res));
+       if (IS_ERR(adata->acp5x_base))
+               return PTR_ERR(adata->acp5x_base);
+
+       adata->master_mode = I2S_MASTER_MODE_ENABLE;
+       dev_set_drvdata(&pdev->dev, adata);
+       ret = devm_snd_soc_register_component(&pdev->dev,
+                                             &acp5x_dai_component,
+                                             &acp5x_i2s_dai, 1);
+       if (ret)
+               dev_err(&pdev->dev, "Fail to register acp i2s dai\n");
+       return ret;
+}
+
+static struct platform_driver acp5x_dai_driver = {
+       .probe = acp5x_dai_probe,
+       .driver = {
+               .name = "acp5x_i2s_playcap",
+       },
+};
+
+module_platform_driver(acp5x_dai_driver);
+
+MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
+MODULE_DESCRIPTION("AMD ACP5.x CPU DAI Driver");
+MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_LICENSE("GPL v2");

diff --git a/sound/soc/amd/vangogh/acp5x.h b/sound/soc/amd/vangogh/acp5x.h
index 929be9905e8e7f74b76de359c0a04dd4172d25b4..3238c1154053e5eb409cd6723953c277bb618f72 100644 (file)
--- a/sound/soc/amd/vangogh/acp5x.h
+++ b/sound/soc/amd/vangogh/acp5x.h
@@ -71,7 +71,11 @@
 #define DMA_SIZE 0x40
 #define FRM_LEN 0x100
 
+#define I2S_MASTER_MODE_ENABLE 1
+#define I2S_MASTER_MODE_DISABLE 0
+
 struct i2s_dev_data {
+       bool master_mode;
        unsigned int i2s_irq;
        void __iomem *acp5x_base;
        struct snd_pcm_substream *play_stream;