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-rw-r--r--sound/soc/amd/rpl/Makefile5
-rw-r--r--sound/soc/amd/rpl/rpl-pci-acp6x.c227
-rw-r--r--sound/soc/amd/rpl/rpl_acp6x.h36
-rw-r--r--sound/soc/amd/rpl/rpl_acp6x_chip_offset_byte.h30
4 files changed, 298 insertions, 0 deletions
diff --git a/sound/soc/amd/rpl/Makefile b/sound/soc/amd/rpl/Makefile
new file mode 100644
index 000000000000..11a33a05e94b
--- /dev/null
+++ b/sound/soc/amd/rpl/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0+
+# RPL platform Support
+snd-rpl-pci-acp6x-objs := rpl-pci-acp6x.o
+
+obj-$(CONFIG_SND_SOC_AMD_RPL_ACP6x) += snd-rpl-pci-acp6x.o
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 000000000000..a8e548ed991b
--- /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");
diff --git a/sound/soc/amd/rpl/rpl_acp6x.h b/sound/soc/amd/rpl/rpl_acp6x.h
new file mode 100644
index 000000000000..f5816a33632e
--- /dev/null
+++ b/sound/soc/amd/rpl/rpl_acp6x.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * AMD ACP Driver
+ *
+ * Copyright (C) 2021 Advanced Micro Devices, Inc. All rights reserved.
+ */
+
+#include "rpl_acp6x_chip_offset_byte.h"
+
+#define ACP_DEVICE_ID 0x15E2
+#define ACP6x_PHY_BASE_ADDRESS 0x1240000
+
+#define ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK 0x00010001
+#define ACP_PGFSM_CNTL_POWER_ON_MASK 1
+#define ACP_PGFSM_CNTL_POWER_OFF_MASK 0
+#define ACP_PGFSM_STATUS_MASK 3
+#define ACP_POWERED_ON 0
+#define ACP_POWER_ON_IN_PROGRESS 1
+#define ACP_POWERED_OFF 2
+#define ACP_POWER_OFF_IN_PROGRESS 3
+
+#define DELAY_US 5
+#define ACP_COUNTER 20000
+
+/* time in ms for runtime suspend delay */
+#define ACP_SUSPEND_DELAY_MS 2000
+
+static inline u32 rpl_acp_readl(void __iomem *base_addr)
+{
+ return readl(base_addr - ACP6x_PHY_BASE_ADDRESS);
+}
+
+static inline void rpl_acp_writel(u32 val, void __iomem *base_addr)
+{
+ writel(val, base_addr - ACP6x_PHY_BASE_ADDRESS);
+}
diff --git a/sound/soc/amd/rpl/rpl_acp6x_chip_offset_byte.h b/sound/soc/amd/rpl/rpl_acp6x_chip_offset_byte.h
new file mode 100644
index 000000000000..456498f5396d
--- /dev/null
+++ b/sound/soc/amd/rpl/rpl_acp6x_chip_offset_byte.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * AMD ACP 6.2 Register Documentation
+ *
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ */
+
+#ifndef _rpl_acp6x_OFFSET_HEADER
+#define _rpl_acp6x_OFFSET_HEADER
+
+/* Registers from ACP_CLKRST block */
+#define ACP_SOFT_RESET 0x1241000
+#define ACP_CONTROL 0x1241004
+#define ACP_STATUS 0x1241008
+#define ACP_DYNAMIC_CG_MASTER_CONTROL 0x1241010
+#define ACP_PGFSM_CONTROL 0x124101C
+#define ACP_PGFSM_STATUS 0x1241020
+#define ACP_CLKMUX_SEL 0x1241024
+
+/* Registers from ACP_AON block */
+#define ACP_PME_EN 0x1241400
+#define ACP_DEVICE_STATE 0x1241404
+#define AZ_DEVICE_STATE 0x1241408
+#define ACP_PIN_CONFIG 0x1241440
+#define ACP_PAD_PULLUP_CTRL 0x1241444
+#define ACP_PAD_PULLDOWN_CTRL 0x1241448
+#define ACP_PAD_DRIVE_STRENGTH_CTRL 0x124144C
+#define ACP_PAD_SCHMEN_CTRL 0x1241450
+
+#endif
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