[PATCH 1/5] ASoC: amd: Registering device endpoints using MFD framework

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Removed platform based endpoint registering.
Now Registering DMA and multiple I2S BT playback
endpoint devices automatically by using MFD framework.

Signed-off-by: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati@xxxxxxx>
Reviewed-by: Vijendar Mukunda <vijendar.mukunda@xxxxxxx>
---
 sound/soc/amd/raven/acp3x.h     |  54 ++++++++-------
 sound/soc/amd/raven/pci-acp3x.c | 148 +++++++++++++++++++++++++++++-----------
 2 files changed, 139 insertions(+), 63 deletions(-)

diff --git a/sound/soc/amd/raven/acp3x.h b/sound/soc/amd/raven/acp3x.h
index 4f2cadd..3a27fc8 100644
--- a/sound/soc/amd/raven/acp3x.h
+++ b/sound/soc/amd/raven/acp3x.h
@@ -7,33 +7,41 @@
 
 #include "chip_offset_byte.h"
 
-#define ACP3x_PHY_BASE_ADDRESS 0x1240000
-#define	ACP3x_I2S_MODE	0
-#define	ACP3x_REG_START	0x1240000
-#define	ACP3x_REG_END	0x1250200
-#define I2S_MODE	0x04
-#define	BT_TX_THRESHOLD 26
-#define	BT_RX_THRESHOLD 25
-#define ACP3x_POWER_ON 0x00
-#define ACP3x_POWER_ON_IN_PROGRESS 0x01
-#define ACP3x_POWER_OFF 0x02
-#define ACP3x_POWER_OFF_IN_PROGRESS 0x03
+#define ACP3x_DEVS		3
+#define ACP3x_PHY_BASE_ADDRESS	0x1240000
+#define	ACP3x_I2S_MODE		0
+#define	ACP3x_REG_START		0x1240000
+#define	ACP3x_REG_END		0x1250200
+#define ACP3x_I2STDM_REG_START	0x1242400
+#define ACP3x_I2STDM_REG_END	0x1242410
+#define ACP3x_BT_TDM_REG_START	0x1242800
+#define ACP3x_BT_TDM_REG_END	0x1242810
+#define I2S_MODE		0x04
+#define	I2S_RX_THRESHOLD	27
+#define	I2S_TX_THRESHOLD	28
+#define	BT_TX_THRESHOLD		26
+#define	BT_RX_THRESHOLD		25
+#define ACP_ERR_INTR_MASK	29
+#define ACP3x_POWER_ON		0x00
+#define ACP3x_POWER_ON_IN_PROGRESS	0x01
+#define ACP3x_POWER_OFF			0x02
+#define ACP3x_POWER_OFF_IN_PROGRESS	0x03
 #define ACP3x_SOFT_RESET__SoftResetAudDone_MASK	0x00010001
 
 #define ACP_SRAM_PTE_OFFSET	0x02050000
-#define PAGE_SIZE_4K_ENABLE 0x2
+#define PAGE_SIZE_4K_ENABLE	0x2
 #define MEM_WINDOW_START	0x4000000
-#define PLAYBACK_FIFO_ADDR_OFFSET 0x400
-#define CAPTURE_FIFO_ADDR_OFFSET  0x500
-
-#define PLAYBACK_MIN_NUM_PERIODS    2
-#define PLAYBACK_MAX_NUM_PERIODS    8
-#define PLAYBACK_MAX_PERIOD_SIZE    16384
-#define PLAYBACK_MIN_PERIOD_SIZE    4096
-#define CAPTURE_MIN_NUM_PERIODS     2
-#define CAPTURE_MAX_NUM_PERIODS     8
-#define CAPTURE_MAX_PERIOD_SIZE     16384
-#define CAPTURE_MIN_PERIOD_SIZE     4096
+#define PLAYBACK_FIFO_ADDR_OFFSET	0x400
+#define CAPTURE_FIFO_ADDR_OFFSET	0x500
+
+#define PLAYBACK_MIN_NUM_PERIODS	2
+#define PLAYBACK_MAX_NUM_PERIODS	8
+#define PLAYBACK_MAX_PERIOD_SIZE	16384
+#define PLAYBACK_MIN_PERIOD_SIZE	4096
+#define CAPTURE_MIN_NUM_PERIODS		2
+#define CAPTURE_MAX_NUM_PERIODS		8
+#define CAPTURE_MAX_PERIOD_SIZE		16384
+#define CAPTURE_MIN_PERIOD_SIZE		4096
 
 #define MAX_BUFFER (PLAYBACK_MAX_PERIOD_SIZE * PLAYBACK_MAX_NUM_PERIODS)
 #define MIN_BUFFER MAX_BUFFER
diff --git a/sound/soc/amd/raven/pci-acp3x.c b/sound/soc/amd/raven/pci-acp3x.c
index facec24..c0b8fad 100644
--- a/sound/soc/amd/raven/pci-acp3x.c
+++ b/sound/soc/amd/raven/pci-acp3x.c
@@ -9,23 +9,49 @@
 #include <linux/io.h>
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
+#include <linux/mfd/core.h>
+#include <linux/pm_runtime.h>
+#include <sound/pcm.h>
 
 #include "acp3x.h"
 
+struct i2s_platform_data {
+	unsigned int cap;
+	int channel;
+	u32 snd_rates;
+};
 struct acp3x_dev_data {
+	struct device *parent;
+	struct mfd_cell *cell;
+	struct resource *res;
 	void __iomem *acp3x_base;
 	bool acp3x_audio_mode;
-	struct resource *res;
 	struct platform_device *pdev;
 };
 
+
+static struct device *get_mfd_cell_dev(const char *device_name, int r)
+{
+	char auto_dev_name[25];
+	struct device *dev;
+
+	snprintf(auto_dev_name, sizeof(auto_dev_name),
+		 "%s.%d.auto", device_name, r);
+	dev = bus_find_device_by_name(&platform_bus_type,
+					NULL, auto_dev_name);
+	dev_info(dev, "device %s added\n", auto_dev_name);
+	return dev;
+}
+
 static int snd_acp3x_probe(struct pci_dev *pci,
 			   const struct pci_device_id *pci_id)
 {
 	int ret;
-	u32 addr, val;
+	uint64_t addr;
+	int val, i, r;
 	struct acp3x_dev_data *adata;
-	struct platform_device_info pdevinfo;
+	struct device *dev;
+	struct i2s_platform_data *i2s_pdata;
 	unsigned int irqflags;
 
 	if (pci_enable_device(pci)) {
@@ -63,47 +89,82 @@ static int snd_acp3x_probe(struct pci_dev *pci,
 	}
 	pci_set_master(pci);
 	pci_set_drvdata(pci, adata);
-
+	adata->parent = &pci->dev;
 	val = rv_readl(adata->acp3x_base + mmACP_I2S_PIN_CONFIG);
 	switch (val) {
 	case I2S_MODE:
 		adata->res = devm_kzalloc(&pci->dev,
-					  sizeof(struct resource) * 2,
-					  GFP_KERNEL);
-		if (!adata->res) {
+				sizeof(struct resource) * 4,
+						GFP_KERNEL);
+		adata->cell = devm_kzalloc(&pci->dev,
+				sizeof(struct mfd_cell) * 3,
+						GFP_KERNEL);
+		if (!adata->cell) {
 			ret = -ENOMEM;
 			goto unmap_mmio;
 		}
 
-		adata->res[0].name = "acp3x_i2s_iomem";
-		adata->res[0].flags = IORESOURCE_MEM;
-		adata->res[0].start = addr;
-		adata->res[0].end = addr + (ACP3x_REG_END - ACP3x_REG_START);
-
-		adata->res[1].name = "acp3x_i2s_irq";
-		adata->res[1].flags = IORESOURCE_IRQ;
-		adata->res[1].start = pci->irq;
-		adata->res[1].end = pci->irq;
-
-		adata->acp3x_audio_mode = ACP3x_I2S_MODE;
-
-		memset(&pdevinfo, 0, sizeof(pdevinfo));
-		pdevinfo.name = "acp3x_rv_i2s";
-		pdevinfo.id = 0;
-		pdevinfo.parent = &pci->dev;
-		pdevinfo.num_res = 2;
-		pdevinfo.res = adata->res;
-		pdevinfo.data = &irqflags;
-		pdevinfo.size_data = sizeof(irqflags);
-
-		adata->pdev = platform_device_register_full(&pdevinfo);
-		if (IS_ERR(adata->pdev)) {
-			dev_err(&pci->dev, "cannot register %s device\n",
-				pdevinfo.name);
-			ret = PTR_ERR(adata->pdev);
-			goto unmap_mmio;
+		i2s_pdata = devm_kzalloc(&pci->dev,
+				sizeof(struct i2s_platform_data) * 3,
+						GFP_KERNEL);
+		if (i2s_pdata == NULL) {
+			kfree(adata->res);
+			kfree(adata->cell);
+			return -ENOMEM;
 		}
+		adata->res[0].name	= "acp3x_i2s_iomem";
+		adata->res[0].flags	= IORESOURCE_MEM;
+		adata->res[0].start	= addr;
+		adata->res[0].end	= addr +
+			(ACP3x_REG_END - ACP3x_REG_START);
+		i2s_pdata[0].cap	= 0;
+		i2s_pdata[0].snd_rates	= SNDRV_PCM_RATE_8000_96000;
+
+		adata->res[1].name	= "acp3x_i2s_sp_play_cap";
+		adata->res[1].flags	= IORESOURCE_MEM;
+		adata->res[1].start	= addr + ACP3x_I2STDM_REG_START;
+		adata->res[1].end	= addr + ACP3x_I2STDM_REG_END;
+		i2s_pdata[1].cap	= 0;
+		i2s_pdata[1].snd_rates	= SNDRV_PCM_RATE_8000_96000;
+
+		adata->res[2].name	= "acp3x_i2s_bt_play_cap";
+		adata->res[2].flags	= IORESOURCE_MEM;
+		adata->res[2].start	= addr + ACP3x_BT_TDM_REG_START;
+		adata->res[2].end	= addr + ACP3x_BT_TDM_REG_END;
+		i2s_pdata[2].cap	= 0;
+		i2s_pdata[2].snd_rates	= SNDRV_PCM_RATE_8000_96000;
+
+		adata->res[3].name	= "acp3x_i2s_irq";
+		adata->res[3].flags	= IORESOURCE_IRQ;
+		adata->res[3].start	= pci->irq;
+		adata->res[3].end	= adata->res[3].start;
+
+		adata->acp3x_audio_mode	= ACP3x_I2S_MODE;
+
+		adata->cell[0].name	=	"acp3x_rv_i2s_dma";
+		adata->cell[0].num_resources	= 4;
+		adata->cell[0].resources	= &adata->res[0];
+		adata->cell[0].platform_data	= &irqflags;
+		adata->cell[0].pdata_size	= sizeof(irqflags);
+
+		adata->cell[1].name		= "acp3x_i2s_playcap";
+		adata->cell[1].num_resources	= 1;
+		adata->cell[1].resources	= &adata->res[1];
+		adata->cell[1].platform_data	= &i2s_pdata[0];
+		adata->cell[1].pdata_size	=
+				sizeof(struct i2s_platform_data);
+
+		adata->cell[2].name		= "acp3x_i2s_playcap";
+		adata->cell[2].num_resources	= 1;
+		adata->cell[2].resources	= &adata->res[2];
+		adata->cell[2].platform_data	= &i2s_pdata[1];
+		adata->cell[2].pdata_size	=
+				sizeof(struct i2s_platform_data);
+		r = mfd_add_hotplug_devices(adata->parent, adata->cell,	3);
+		for (i = 0; i < 3 ; i++)
+			dev = get_mfd_cell_dev(adata->cell[i].name, i);
 		break;
+
 	default:
 		dev_err(&pci->dev, "Invalid ACP audio mode : %d\n", val);
 		ret = -ENODEV;
@@ -112,23 +173,29 @@ static int snd_acp3x_probe(struct pci_dev *pci,
 	return 0;
 
 unmap_mmio:
-	pci_disable_msi(pci);
+	mfd_remove_devices(adata->parent);
+	kfree(adata->res);
+	kfree(adata->cell);
 	iounmap(adata->acp3x_base);
+	/*ignore device status and return driver probe error*/
+	return -ENODEV;
 release_regions:
 	pci_release_regions(pci);
+	/*ignore device status and return driver probe error*/
+	return -ENODEV;
 disable_pci:
 	pci_disable_device(pci);
-
-	return ret;
+	/*ignore device status and return driver probe error*/
+	return -ENODEV;
 }
 
 static void snd_acp3x_remove(struct pci_dev *pci)
 {
 	struct acp3x_dev_data *adata = pci_get_drvdata(pci);
-
-	platform_device_unregister(adata->pdev);
+	mfd_remove_devices(adata->parent);
+	kfree(adata->res);
+	kfree(adata->cell);
 	iounmap(adata->acp3x_base);
-
 	pci_disable_msi(pci);
 	pci_release_regions(pci);
 	pci_disable_device(pci);
@@ -151,6 +218,7 @@ static struct pci_driver acp3x_driver  = {
 
 module_pci_driver(acp3x_driver);
 
+MODULE_AUTHOR("Vishnuvardhanrao.Ravulapati@xxxxxxx");
 MODULE_AUTHOR("Maruthi.Bayyavarapu@xxxxxxx");
 MODULE_DESCRIPTION("AMD ACP3x PCI driver");
 MODULE_LICENSE("GPL v2");
-- 
2.7.4

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