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From: Vijendar Mukunda <vijendar.mukunda@amd.com>
To: <broonie@kernel.org>, <alsa-devel@alsa-project.org>
Cc: <Alexander.Deucher@amd.com>, <Sunil-kumar.Dommati@amd.com>,
	"Vijendar Mukunda" <Vijendar.Mukunda@amd.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
	"Vijendar Mukunda" <vijendar.mukunda@amd.com>,
	open list <linux-kernel@vger.kernel.org>
Subject: [PATCH 02/12] ASoC: amd: add Vangogh ACP PCI driver
Date: Wed, 7 Jul 2021 11:26:13 +0530	[thread overview]
Message-ID: <20210707055623.27371-3-vijendar.mukunda@amd.com> (raw)
In-Reply-To: <20210707055623.27371-1-vijendar.mukunda@amd.com>

From: Vijendar Mukunda <Vijendar.Mukunda@amd.com>

ACP is a PCI audio device.
This patch adds PCI driver to bind to this device and get
PCI resources.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
---
 sound/soc/amd/vangogh/acp5x.h     | 21 ++++++++
 sound/soc/amd/vangogh/pci-acp5x.c | 87 +++++++++++++++++++++++++++++++
 2 files changed, 108 insertions(+)
 create mode 100644 sound/soc/amd/vangogh/acp5x.h
 create mode 100644 sound/soc/amd/vangogh/pci-acp5x.c

diff --git a/sound/soc/amd/vangogh/acp5x.h b/sound/soc/amd/vangogh/acp5x.h
new file mode 100644
index 000000000000..a5e7f7cb65a1
--- /dev/null
+++ b/sound/soc/amd/vangogh/acp5x.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * AMD ALSA SoC PCM Driver
+ *
+ * Copyright (C) 2021 Advanced Micro Devices, Inc. All rights reserved.
+ */
+
+#include "vg_chip_offset_byte.h"
+
+#define ACP5x_PHY_BASE_ADDRESS 0x1240000
+#define ACP_DEVICE_ID 0x15E2
+
+static inline u32 acp_readl(void __iomem *base_addr)
+{
+	return readl(base_addr - ACP5x_PHY_BASE_ADDRESS);
+}
+
+static inline void acp_writel(u32 val, void __iomem *base_addr)
+{
+	writel(val, base_addr - ACP5x_PHY_BASE_ADDRESS);
+}
diff --git a/sound/soc/amd/vangogh/pci-acp5x.c b/sound/soc/amd/vangogh/pci-acp5x.c
new file mode 100644
index 000000000000..e56d060a5cb9
--- /dev/null
+++ b/sound/soc/amd/vangogh/pci-acp5x.c
@@ -0,0 +1,87 @@
+// 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 "acp5x.h"
+
+struct acp5x_dev_data {
+	void __iomem *acp5x_base;
+};
+
+static int snd_acp5x_probe(struct pci_dev *pci,
+			   const struct pci_device_id *pci_id)
+{
+	struct acp5x_dev_data *adata;
+	int ret;
+	u32 addr;
+
+	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);
+
+release_regions:
+	pci_release_regions(pci);
+disable_pci:
+	pci_disable_device(pci);
+
+	return ret;
+}
+
+static void snd_acp5x_remove(struct pci_dev *pci)
+{
+	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,
+};
+
+module_pci_driver(acp5x_driver);
+
+MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
+MODULE_DESCRIPTION("AMD Vangogh ACP PCI driver");
+MODULE_LICENSE("GPL v2");
-- 
2.17.1


  parent reply	other threads:[~2021-07-07  5:39 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20210707055623.27371-1-vijendar.mukunda@amd.com>
2021-07-07  5:56 ` [PATCH 01/12] ASoC: amd: add Vangogh ACP5x IP register header Vijendar Mukunda
2021-07-07  5:56 ` Vijendar Mukunda [this message]
2021-07-07 16:17   ` [PATCH 02/12] ASoC: amd: add Vangogh ACP PCI driver Mark Brown
2021-07-08 14:07     ` Mukunda,Vijendar
2021-07-07  5:56 ` [PATCH 03/12] add acp5x init/de-init functions Vijendar Mukunda
2021-07-07 16:15   ` Pierre-Louis Bossart
2021-07-08 13:30     ` Mukunda,Vijendar
2021-07-07  5:56 ` [PATCH 04/12] ASoC: amd: create acp5x platform devices Vijendar Mukunda
2021-07-07 16:22   ` Mark Brown
2021-07-08 15:02     ` Mukunda,Vijendar
2021-07-07  5:56 ` [PATCH 05/12] ASoC: amd: add ACP5x PCM platform driver Vijendar Mukunda
2021-07-07 16:17   ` Pierre-Louis Bossart
2021-07-08 13:31     ` Mukunda,Vijendar
2021-07-07 16:24   ` Mark Brown
2021-07-08 11:57     ` Mukunda,Vijendar
2021-07-07  5:56 ` [PATCH 06/12] ASoC: amd: irq handler changes for ACP5x PCM dma driver Vijendar Mukunda
2021-07-07 16:20   ` Pierre-Louis Bossart
2021-07-08 13:32     ` Mukunda,Vijendar
2021-07-07  5:56 ` [PATCH 07/12] ASoC: amd: add ACP5x pcm dma driver ops Vijendar Mukunda
2021-07-07 16:27   ` Pierre-Louis Bossart
2021-07-08 11:56     ` Mukunda,Vijendar
2021-07-07 16:30   ` Mark Brown
2021-07-08 11:43     ` Mukunda,Vijendar
2021-07-07  5:56 ` [PATCH 08/12] ASoC: amd: add vangogh i2s controller driver Vijendar Mukunda
2021-07-07  5:56 ` [PATCH 09/12] ASoC: amd: add vangogh i2s dai driver ops Vijendar Mukunda
2021-07-07 16:35   ` Mark Brown
2021-07-08 11:30     ` Mukunda,Vijendar
2021-07-07  5:56 ` [PATCH 10/12] ASoC: amd: add vangogh pci driver pm ops Vijendar Mukunda
2021-07-07 16:34   ` Pierre-Louis Bossart
2021-07-08 11:41     ` Mukunda,Vijendar
2021-07-13  6:36       ` Mukunda,Vijendar
2021-07-14 16:23         ` Mark Brown
2021-07-15 23:49           ` Mukunda,Vijendar
2021-07-07  5:56 ` [PATCH 11/12] ASoc: amd: add vangogh i2s dma " Vijendar Mukunda
2021-07-07  5:56 ` [PATCH 12/12] ASoC: amd: enable vangogh acp5x driver build Vijendar Mukunda
2021-07-07  9:00   ` kernel test robot
2021-07-08 14:08     ` Mukunda,Vijendar

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