1 files changed, 231 insertions, 33 deletions

diff --git a/sound/soc/amd/raven/pci-acp3x.c b/sound/soc/amd/raven/pci-acp3x.c
index facec2472b34..65330bb50e74 100644
--- a/sound/soc/amd/raven/pci-acp3x.c
+++ b/sound/soc/amd/raven/pci-acp3x.c
@@ -9,6 +9,8 @@
 #include <linux/io.h>
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
+#include <linux/delay.h>
 
 #include "acp3x.h"
 
@@ -16,17 +18,120 @@ struct acp3x_dev_data {
 	void __iomem *acp3x_base;
 	bool acp3x_audio_mode;
 	struct resource *res;
-	struct platform_device *pdev;
+	struct platform_device *pdev[ACP3x_DEVS];
 };
 
+static int acp3x_power_on(void __iomem *acp3x_base)
+{
+	u32 val;
+	int timeout;
+
+	val = rv_readl(acp3x_base + mmACP_PGFSM_STATUS);
+
+	if (val == 0)
+		return val;
+
+	if (!((val & ACP_PGFSM_STATUS_MASK) ==
+				ACP_POWER_ON_IN_PROGRESS))
+		rv_writel(ACP_PGFSM_CNTL_POWER_ON_MASK,
+			acp3x_base + mmACP_PGFSM_CONTROL);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = rv_readl(acp3x_base + mmACP_PGFSM_STATUS);
+		if (!val)
+			return 0;
+		udelay(1);
+	}
+	return -ETIMEDOUT;
+}
+
+static int acp3x_power_off(void __iomem *acp3x_base)
+{
+	u32 val;
+	int timeout;
+
+	rv_writel(ACP_PGFSM_CNTL_POWER_OFF_MASK,
+			acp3x_base + mmACP_PGFSM_CONTROL);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = rv_readl(acp3x_base + mmACP_PGFSM_STATUS);
+		if ((val & ACP_PGFSM_STATUS_MASK) == ACP_POWERED_OFF)
+			return 0;
+		udelay(1);
+	}
+	return -ETIMEDOUT;
+}
+
+static int acp3x_reset(void __iomem *acp3x_base)
+{
+	u32 val;
+	int timeout;
+
+	rv_writel(1, acp3x_base + mmACP_SOFT_RESET);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = rv_readl(acp3x_base + mmACP_SOFT_RESET);
+		if (val & ACP3x_SOFT_RESET__SoftResetAudDone_MASK)
+			break;
+		cpu_relax();
+	}
+	rv_writel(0, acp3x_base + mmACP_SOFT_RESET);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = rv_readl(acp3x_base + mmACP_SOFT_RESET);
+		if (!val)
+			return 0;
+		cpu_relax();
+	}
+	return -ETIMEDOUT;
+}
+
+static int acp3x_init(void __iomem *acp3x_base)
+{
+	int ret;
+
+	/* power on */
+	ret = acp3x_power_on(acp3x_base);
+	if (ret) {
+		pr_err("ACP3x power on failed\n");
+		return ret;
+	}
+	/* Reset */
+	ret = acp3x_reset(acp3x_base);
+	if (ret) {
+		pr_err("ACP3x reset failed\n");
+		return ret;
+	}
+	return 0;
+}
+
+static int acp3x_deinit(void __iomem *acp3x_base)
+{
+	int ret;
+
+	/* Reset */
+	ret = acp3x_reset(acp3x_base);
+	if (ret) {
+		pr_err("ACP3x reset failed\n");
+		return ret;
+	}
+	/* power off */
+	ret = acp3x_power_off(acp3x_base);
+	if (ret) {
+		pr_err("ACP3x power off failed\n");
+		return ret;
+	}
+	return 0;
+}
+
 static int snd_acp3x_probe(struct pci_dev *pci,
 			   const struct pci_device_id *pci_id)
 {
-	int ret;
-	u32 addr, val;
 	struct acp3x_dev_data *adata;
-	struct platform_device_info pdevinfo;
+	struct platform_device_info pdevinfo[ACP3x_DEVS];
 	unsigned int irqflags;
+	int ret, i;
+	u32 addr, val;
 
 	if (pci_enable_device(pci)) {
 		dev_err(&pci->dev, "pci_enable_device failed\n");
@@ -56,23 +161,27 @@ static int snd_acp3x_probe(struct pci_dev *pci,
 		irqflags = 0;
 
 	addr = pci_resource_start(pci, 0);
-	adata->acp3x_base = ioremap(addr, pci_resource_len(pci, 0));
+	adata->acp3x_base = devm_ioremap(&pci->dev, addr,
+					pci_resource_len(pci, 0));
 	if (!adata->acp3x_base) {
 		ret = -ENOMEM;
-		goto release_regions;
+		goto disable_msi;
 	}
 	pci_set_master(pci);
 	pci_set_drvdata(pci, adata);
+	ret = acp3x_init(adata->acp3x_base);
+	if (ret)
+		goto disable_msi;
 
 	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,
+					  sizeof(struct resource) * 4,
 					  GFP_KERNEL);
 		if (!adata->res) {
 			ret = -ENOMEM;
-			goto unmap_mmio;
+			goto de_init;
 		}
 
 		adata->res[0].name = "acp3x_i2s_iomem";
@@ -80,40 +189,82 @@ static int snd_acp3x_probe(struct pci_dev *pci,
 		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->res[1].name = "acp3x_i2s_sp";
+		adata->res[1].flags = IORESOURCE_MEM;
+		adata->res[1].start = addr + ACP3x_I2STDM_REG_START;
+		adata->res[1].end = addr + ACP3x_I2STDM_REG_END;
+
+		adata->res[2].name = "acp3x_i2s_bt";
+		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;
+
+		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;
 
 		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;
+		pdevinfo[0].name = "acp3x_rv_i2s_dma";
+		pdevinfo[0].id = 0;
+		pdevinfo[0].parent = &pci->dev;
+		pdevinfo[0].num_res = 4;
+		pdevinfo[0].res = &adata->res[0];
+		pdevinfo[0].data = &irqflags;
+		pdevinfo[0].size_data = sizeof(irqflags);
+
+		pdevinfo[1].name = "acp3x_i2s_playcap";
+		pdevinfo[1].id = 0;
+		pdevinfo[1].parent = &pci->dev;
+		pdevinfo[1].num_res = 1;
+		pdevinfo[1].res = &adata->res[1];
+
+		pdevinfo[2].name = "acp3x_i2s_playcap";
+		pdevinfo[2].id = 1;
+		pdevinfo[2].parent = &pci->dev;
+		pdevinfo[2].num_res = 1;
+		pdevinfo[2].res = &adata->res[1];
+
+		pdevinfo[3].name = "acp3x_i2s_playcap";
+		pdevinfo[3].id = 2;
+		pdevinfo[3].parent = &pci->dev;
+		pdevinfo[3].num_res = 1;
+		pdevinfo[3].res = &adata->res[2];
+		for (i = 0; i < ACP3x_DEVS; i++) {
+			adata->pdev[i] =
+				platform_device_register_full(&pdevinfo[i]);
+			if (IS_ERR(adata->pdev[i])) {
+				dev_err(&pci->dev, "cannot register %s device\n",
+					pdevinfo[i].name);
+				ret = PTR_ERR(adata->pdev[i]);
+				goto unregister_devs;
+			}
 		}
 		break;
 	default:
 		dev_err(&pci->dev, "Invalid ACP audio mode : %d\n", val);
 		ret = -ENODEV;
-		goto unmap_mmio;
+		goto disable_msi;
 	}
+	pm_runtime_set_autosuspend_delay(&pci->dev, 2000);
+	pm_runtime_use_autosuspend(&pci->dev);
+	pm_runtime_set_active(&pci->dev);
+	pm_runtime_put_noidle(&pci->dev);
+	pm_runtime_enable(&pci->dev);
+	pm_runtime_allow(&pci->dev);
 	return 0;
 
-unmap_mmio:
+unregister_devs:
+	if (val == I2S_MODE)
+		for (i = 0; i < ACP3x_DEVS; i++)
+			platform_device_unregister(adata->pdev[i]);
+de_init:
+	if (acp3x_deinit(adata->acp3x_base))
+		dev_err(&pci->dev, "ACP de-init failed\n");
+disable_msi:
 	pci_disable_msi(pci);
-	iounmap(adata->acp3x_base);
 release_regions:
 	pci_release_regions(pci);
 disable_pci:
@@ -122,13 +273,56 @@ disable_pci:
 	return ret;
 }
 
-static void snd_acp3x_remove(struct pci_dev *pci)
+static int snd_acp3x_suspend(struct device *dev)
+{
+	int ret;
+	struct acp3x_dev_data *adata;
+
+	adata = dev_get_drvdata(dev);
+	ret = acp3x_deinit(adata->acp3x_base);
+	if (ret)
+		dev_err(dev, "ACP de-init failed\n");
+	else
+		dev_dbg(dev, "ACP de-initialized\n");
+
+	return 0;
+}
+
+static int snd_acp3x_resume(struct device *dev)
 {
-	struct acp3x_dev_data *adata = pci_get_drvdata(pci);
+	int ret;
+	struct acp3x_dev_data *adata;
 
-	platform_device_unregister(adata->pdev);
-	iounmap(adata->acp3x_base);
+	adata = dev_get_drvdata(dev);
+	ret = acp3x_init(adata->acp3x_base);
+	if (ret) {
+		dev_err(dev, "ACP init failed\n");
+		return ret;
+	}
+	return 0;
+}
 
+static const struct dev_pm_ops acp3x_pm = {
+	.runtime_suspend = snd_acp3x_suspend,
+	.runtime_resume =  snd_acp3x_resume,
+	.resume =	snd_acp3x_resume,
+};
+
+static void snd_acp3x_remove(struct pci_dev *pci)
+{
+	struct acp3x_dev_data *adata;
+	int i, ret;
+
+	adata = pci_get_drvdata(pci);
+	if (adata->acp3x_audio_mode == ACP3x_I2S_MODE) {
+		for (i = 0; i < ACP3x_DEVS; i++)
+			platform_device_unregister(adata->pdev[i]);
+	}
+	ret = acp3x_deinit(adata->acp3x_base);
+	if (ret)
+		dev_err(&pci->dev, "ACP de-init failed\n");
+	pm_runtime_disable(&pci->dev);
+	pm_runtime_get_noresume(&pci->dev);
 	pci_disable_msi(pci);
 	pci_release_regions(pci);
 	pci_disable_device(pci);
@@ -147,10 +341,14 @@ static struct pci_driver acp3x_driver  = {
 	.id_table = snd_acp3x_ids,
 	.probe = snd_acp3x_probe,
 	.remove = snd_acp3x_remove,
+	.driver = {
+		.pm = &acp3x_pm,
+	}
 };
 
 module_pci_driver(acp3x_driver);
 
+MODULE_AUTHOR("Vishnuvardhanrao.Ravulapati@amd.com");
 MODULE_AUTHOR("Maruthi.Bayyavarapu@amd.com");
 MODULE_DESCRIPTION("AMD ACP3x PCI driver");
 MODULE_LICENSE("GPL v2");