Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 227 insertions, 0 deletions

diff --git a/sound/soc/amd/rpl/rpl-pci-acp6x.c b/sound/soc/amd/rpl/rpl-pci-acp6x.c
new file mode 100644
index 0000000000..a8e548ed99
--- /dev/null
+++ b/sound/soc/amd/rpl/rpl-pci-acp6x.c
@@ -0,0 +1,227 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * AMD RPL ACP PCI Driver
+ *
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ */
+
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+
+#include "rpl_acp6x.h"
+
+struct rpl_dev_data {
+	void __iomem *acp6x_base;
+};
+
+static int rpl_power_on(void __iomem *acp_base)
+{
+	u32 val;
+	int timeout;
+
+	val = rpl_acp_readl(acp_base + ACP_PGFSM_STATUS);
+
+	if (!val)
+		return val;
+
+	if ((val & ACP_PGFSM_STATUS_MASK) != ACP_POWER_ON_IN_PROGRESS)
+		rpl_acp_writel(ACP_PGFSM_CNTL_POWER_ON_MASK, acp_base + ACP_PGFSM_CONTROL);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = rpl_acp_readl(acp_base + ACP_PGFSM_STATUS);
+		if (!val)
+			return 0;
+		udelay(1);
+	}
+	return -ETIMEDOUT;
+}
+
+static int rpl_reset(void __iomem *acp_base)
+{
+	u32 val;
+	int timeout;
+
+	rpl_acp_writel(1, acp_base + ACP_SOFT_RESET);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = rpl_acp_readl(acp_base + ACP_SOFT_RESET);
+		if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK)
+			break;
+		cpu_relax();
+	}
+	rpl_acp_writel(0, acp_base + ACP_SOFT_RESET);
+	timeout = 0;
+	while (++timeout < 500) {
+		val = rpl_acp_readl(acp_base + ACP_SOFT_RESET);
+		if (!val)
+			return 0;
+		cpu_relax();
+	}
+	return -ETIMEDOUT;
+}
+
+static int rpl_init(void __iomem *acp_base)
+{
+	int ret;
+
+	/* power on */
+	ret = rpl_power_on(acp_base);
+	if (ret) {
+		pr_err("ACP power on failed\n");
+		return ret;
+	}
+	rpl_acp_writel(0x01, acp_base + ACP_CONTROL);
+	/* Reset */
+	ret = rpl_reset(acp_base);
+	if (ret) {
+		pr_err("ACP reset failed\n");
+		return ret;
+	}
+	rpl_acp_writel(0x03, acp_base + ACP_CLKMUX_SEL);
+	return 0;
+}
+
+static int rpl_deinit(void __iomem *acp_base)
+{
+	int ret;
+
+	/* Reset */
+	ret = rpl_reset(acp_base);
+	if (ret) {
+		pr_err("ACP reset failed\n");
+		return ret;
+	}
+	rpl_acp_writel(0x00, acp_base + ACP_CLKMUX_SEL);
+	rpl_acp_writel(0x00, acp_base + ACP_CONTROL);
+	return 0;
+}
+
+static int snd_rpl_probe(struct pci_dev *pci,
+			 const struct pci_device_id *pci_id)
+{
+	struct rpl_dev_data *adata;
+	u32 addr;
+	int ret;
+
+	/* RPL device check */
+	switch (pci->revision) {
+	case 0x62:
+		break;
+	default:
+		dev_dbg(&pci->dev, "acp6x pci device not found\n");
+		return -ENODEV;
+	}
+	if (pci_enable_device(pci)) {
+		dev_err(&pci->dev, "pci_enable_device failed\n");
+		return -ENODEV;
+	}
+
+	ret = pci_request_regions(pci, "AMD ACP6x audio");
+	if (ret < 0) {
+		dev_err(&pci->dev, "pci_request_regions failed\n");
+		goto disable_pci;
+	}
+
+	adata = devm_kzalloc(&pci->dev, sizeof(struct rpl_dev_data),
+			     GFP_KERNEL);
+	if (!adata) {
+		ret = -ENOMEM;
+		goto release_regions;
+	}
+
+	addr = pci_resource_start(pci, 0);
+	adata->acp6x_base = devm_ioremap(&pci->dev, addr,
+					 pci_resource_len(pci, 0));
+	if (!adata->acp6x_base) {
+		ret = -ENOMEM;
+		goto release_regions;
+	}
+	pci_set_master(pci);
+	pci_set_drvdata(pci, adata);
+	ret = rpl_init(adata->acp6x_base);
+	if (ret)
+		goto release_regions;
+	pm_runtime_set_autosuspend_delay(&pci->dev, ACP_SUSPEND_DELAY_MS);
+	pm_runtime_use_autosuspend(&pci->dev);
+	pm_runtime_put_noidle(&pci->dev);
+	pm_runtime_allow(&pci->dev);
+
+	return 0;
+release_regions:
+	pci_release_regions(pci);
+disable_pci:
+	pci_disable_device(pci);
+
+	return ret;
+}
+
+static int __maybe_unused snd_rpl_suspend(struct device *dev)
+{
+	struct rpl_dev_data *adata;
+	int ret;
+
+	adata = dev_get_drvdata(dev);
+	ret = rpl_deinit(adata->acp6x_base);
+	if (ret)
+		dev_err(dev, "ACP de-init failed\n");
+	return ret;
+}
+
+static int __maybe_unused snd_rpl_resume(struct device *dev)
+{
+	struct rpl_dev_data *adata;
+	int ret;
+
+	adata = dev_get_drvdata(dev);
+	ret = rpl_init(adata->acp6x_base);
+	if (ret)
+		dev_err(dev, "ACP init failed\n");
+	return ret;
+}
+
+static const struct dev_pm_ops rpl_pm = {
+	SET_RUNTIME_PM_OPS(snd_rpl_suspend, snd_rpl_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(snd_rpl_suspend, snd_rpl_resume)
+};
+
+static void snd_rpl_remove(struct pci_dev *pci)
+{
+	struct rpl_dev_data *adata;
+	int ret;
+
+	adata = pci_get_drvdata(pci);
+	ret = rpl_deinit(adata->acp6x_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_rpl_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_rpl_ids);
+
+static struct pci_driver rpl_acp6x_driver  = {
+	.name = KBUILD_MODNAME,
+	.id_table = snd_rpl_ids,
+	.probe = snd_rpl_probe,
+	.remove = snd_rpl_remove,
+	.driver = {
+		.pm = &rpl_pm,
+	}
+};
+
+module_pci_driver(rpl_acp6x_driver);
+
+MODULE_DESCRIPTION("AMD ACP RPL PCI driver");
+MODULE_LICENSE("GPL v2");