Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 338 insertions, 0 deletions

diff --git a/sound/soc/amd/vangogh/pci-acp5x.c b/sound/soc/amd/vangogh/pci-acp5x.c
new file mode 100644
index 0000000000..c4634a8a17
--- /dev/null
+++ b/sound/soc/amd/vangogh/pci-acp5x.c
@@ -0,0 +1,338 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// AMD Vangogh ACP PCI Driver
+//
+// Copyright (C) 2021 Advanced Micro Devices, Inc. All rights reserved.
+
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
+
+#include "acp5x.h"
+
+struct acp5x_dev_data {
+	void __iomem *acp5x_base;
+	bool acp5x_audio_mode;
+	struct resource *res;
+	struct platform_device *pdev[ACP5x_DEVS];
+};
+
+static int acp5x_power_on(void __iomem *acp5x_base)
+{
+	u32 val;
+	int timeout;
+
+	val = acp_readl(acp5x_base + ACP_PGFSM_STATUS);
+
+	if (val == 0)
+		return val;
+
+	if ((val & ACP_PGFSM_STATUS_MASK) !=
+				ACP_POWER_ON_IN_PROGRESS)
+		acp_writel(ACP_PGFSM_CNTL_POWER_ON_MASK,
+			   acp5x_base + ACP_PGFSM_CONTROL);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = acp_readl(acp5x_base + ACP_PGFSM_STATUS);
+		if ((val & ACP_PGFSM_STATUS_MASK) == ACP_POWERED_ON)
+			return 0;
+		udelay(1);
+	}
+	return -ETIMEDOUT;
+}
+
+static int acp5x_reset(void __iomem *acp5x_base)
+{
+	u32 val;
+	int timeout;
+
+	acp_writel(1, acp5x_base + ACP_SOFT_RESET);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = acp_readl(acp5x_base + ACP_SOFT_RESET);
+		if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK)
+			break;
+		cpu_relax();
+	}
+	acp_writel(0, acp5x_base + ACP_SOFT_RESET);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = acp_readl(acp5x_base + ACP_SOFT_RESET);
+		if (!val)
+			return 0;
+		cpu_relax();
+	}
+	return -ETIMEDOUT;
+}
+
+static void acp5x_enable_interrupts(void __iomem *acp5x_base)
+{
+	acp_writel(0x01, acp5x_base + ACP_EXTERNAL_INTR_ENB);
+}
+
+static void acp5x_disable_interrupts(void __iomem *acp5x_base)
+{
+	acp_writel(ACP_EXT_INTR_STAT_CLEAR_MASK, acp5x_base +
+		   ACP_EXTERNAL_INTR_STAT);
+	acp_writel(0x00, acp5x_base + ACP_EXTERNAL_INTR_CNTL);
+	acp_writel(0x00, acp5x_base + ACP_EXTERNAL_INTR_ENB);
+}
+
+static int acp5x_init(void __iomem *acp5x_base)
+{
+	int ret;
+
+	/* power on */
+	ret = acp5x_power_on(acp5x_base);
+	if (ret) {
+		pr_err("ACP5x power on failed\n");
+		return ret;
+	}
+	acp_writel(0x01, acp5x_base + ACP_CONTROL);
+	/* Reset */
+	ret = acp5x_reset(acp5x_base);
+	if (ret) {
+		pr_err("ACP5x reset failed\n");
+		return ret;
+	}
+	acp_writel(0x03, acp5x_base + ACP_CLKMUX_SEL);
+	acp5x_enable_interrupts(acp5x_base);
+	return 0;
+}
+
+static int acp5x_deinit(void __iomem *acp5x_base)
+{
+	int ret;
+
+	acp5x_disable_interrupts(acp5x_base);
+	/* Reset */
+	ret = acp5x_reset(acp5x_base);
+	if (ret) {
+		pr_err("ACP5x reset failed\n");
+		return ret;
+	}
+	acp_writel(0x00, acp5x_base + ACP_CLKMUX_SEL);
+	acp_writel(0x00, acp5x_base + ACP_CONTROL);
+	return 0;
+}
+
+static int snd_acp5x_probe(struct pci_dev *pci,
+			   const struct pci_device_id *pci_id)
+{
+	struct acp5x_dev_data *adata;
+	struct platform_device_info pdevinfo[ACP5x_DEVS];
+	unsigned int irqflags, flag;
+	int ret, i;
+	u32 addr, val;
+
+	/* Return if acp config flag is defined */
+	flag = snd_amd_acp_find_config(pci);
+	if (flag)
+		return -ENODEV;
+
+	irqflags = IRQF_SHARED;
+	if (pci->revision != 0x50)
+		return -ENODEV;
+
+	if (pci_enable_device(pci)) {
+		dev_err(&pci->dev, "pci_enable_device failed\n");
+		return -ENODEV;
+	}
+
+	ret = pci_request_regions(pci, "AMD ACP5x audio");
+	if (ret < 0) {
+		dev_err(&pci->dev, "pci_request_regions failed\n");
+		goto disable_pci;
+	}
+
+	adata = devm_kzalloc(&pci->dev, sizeof(struct acp5x_dev_data),
+			     GFP_KERNEL);
+	if (!adata) {
+		ret = -ENOMEM;
+		goto release_regions;
+	}
+	addr = pci_resource_start(pci, 0);
+	adata->acp5x_base = devm_ioremap(&pci->dev, addr,
+					 pci_resource_len(pci, 0));
+	if (!adata->acp5x_base) {
+		ret = -ENOMEM;
+		goto release_regions;
+	}
+	pci_set_master(pci);
+	pci_set_drvdata(pci, adata);
+	ret = acp5x_init(adata->acp5x_base);
+	if (ret)
+		goto release_regions;
+
+	val = acp_readl(adata->acp5x_base + ACP_PIN_CONFIG);
+	switch (val) {
+	case I2S_MODE:
+		adata->res = devm_kzalloc(&pci->dev,
+					  sizeof(struct resource) * ACP5x_RES,
+					  GFP_KERNEL);
+		if (!adata->res) {
+			ret = -ENOMEM;
+			goto de_init;
+		}
+
+		adata->res[0].name = "acp5x_i2s_iomem";
+		adata->res[0].flags = IORESOURCE_MEM;
+		adata->res[0].start = addr;
+		adata->res[0].end = addr + (ACP5x_REG_END - ACP5x_REG_START);
+
+		adata->res[1].name = "acp5x_i2s_sp";
+		adata->res[1].flags = IORESOURCE_MEM;
+		adata->res[1].start = addr + ACP5x_I2STDM_REG_START;
+		adata->res[1].end = addr + ACP5x_I2STDM_REG_END;
+
+		adata->res[2].name = "acp5x_i2s_hs";
+		adata->res[2].flags = IORESOURCE_MEM;
+		adata->res[2].start = addr + ACP5x_HS_TDM_REG_START;
+		adata->res[2].end = addr + ACP5x_HS_TDM_REG_END;
+
+		adata->res[3].name = "acp5x_i2s_irq";
+		adata->res[3].flags = IORESOURCE_IRQ;
+		adata->res[3].start = pci->irq;
+		adata->res[3].end = adata->res[3].start;
+
+		adata->acp5x_audio_mode = ACP5x_I2S_MODE;
+
+		memset(&pdevinfo, 0, sizeof(pdevinfo));
+		pdevinfo[0].name = "acp5x_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 = "acp5x_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 = "acp5x_i2s_playcap";
+		pdevinfo[2].id = 1;
+		pdevinfo[2].parent = &pci->dev;
+		pdevinfo[2].num_res = 1;
+		pdevinfo[2].res = &adata->res[2];
+
+		pdevinfo[3].name = "acp5x_mach";
+		pdevinfo[3].id = 0;
+		pdevinfo[3].parent = &pci->dev;
+		for (i = 0; i < ACP5x_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_info(&pci->dev, "ACP audio mode : %d\n", val);
+	}
+	pm_runtime_set_autosuspend_delay(&pci->dev, 2000);
+	pm_runtime_use_autosuspend(&pci->dev);
+	pm_runtime_put_noidle(&pci->dev);
+	pm_runtime_allow(&pci->dev);
+	return 0;
+
+unregister_devs:
+	for (--i; i >= 0; i--)
+		platform_device_unregister(adata->pdev[i]);
+de_init:
+	if (acp5x_deinit(adata->acp5x_base))
+		dev_err(&pci->dev, "ACP de-init failed\n");
+release_regions:
+	pci_release_regions(pci);
+disable_pci:
+	pci_disable_device(pci);
+
+	return ret;
+}
+
+static int __maybe_unused snd_acp5x_suspend(struct device *dev)
+{
+	int ret;
+	struct acp5x_dev_data *adata;
+
+	adata = dev_get_drvdata(dev);
+	ret = acp5x_deinit(adata->acp5x_base);
+	if (ret)
+		dev_err(dev, "ACP de-init failed\n");
+	else
+		dev_dbg(dev, "ACP de-initialized\n");
+
+	return ret;
+}
+
+static int __maybe_unused snd_acp5x_resume(struct device *dev)
+{
+	int ret;
+	struct acp5x_dev_data *adata;
+
+	adata = dev_get_drvdata(dev);
+	ret = acp5x_init(adata->acp5x_base);
+	if (ret) {
+		dev_err(dev, "ACP init failed\n");
+		return ret;
+	}
+	return 0;
+}
+
+static const struct dev_pm_ops acp5x_pm = {
+	SET_RUNTIME_PM_OPS(snd_acp5x_suspend,
+			   snd_acp5x_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(snd_acp5x_suspend, snd_acp5x_resume)
+};
+
+static void snd_acp5x_remove(struct pci_dev *pci)
+{
+	struct acp5x_dev_data *adata;
+	int i, ret;
+
+	adata = pci_get_drvdata(pci);
+	if (adata->acp5x_audio_mode == ACP5x_I2S_MODE) {
+		for (i = 0; i < ACP5x_DEVS; i++)
+			platform_device_unregister(adata->pdev[i]);
+	}
+	ret = acp5x_deinit(adata->acp5x_base);
+	if (ret)
+		dev_err(&pci->dev, "ACP de-init failed\n");
+	pm_runtime_forbid(&pci->dev);
+	pm_runtime_get_noresume(&pci->dev);
+	pci_release_regions(pci);
+	pci_disable_device(pci);
+}
+
+static const struct pci_device_id snd_acp5x_ids[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, ACP_DEVICE_ID),
+	.class = PCI_CLASS_MULTIMEDIA_OTHER << 8,
+	.class_mask = 0xffffff },
+	{ 0, },
+};
+MODULE_DEVICE_TABLE(pci, snd_acp5x_ids);
+
+static struct pci_driver acp5x_driver  = {
+	.name = KBUILD_MODNAME,
+	.id_table = snd_acp5x_ids,
+	.probe = snd_acp5x_probe,
+	.remove = snd_acp5x_remove,
+	.driver = {
+		.pm = &acp5x_pm,
+	}
+};
+
+module_pci_driver(acp5x_driver);
+
+MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
+MODULE_DESCRIPTION("AMD Vangogh ACP PCI driver");
+MODULE_LICENSE("GPL v2");