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Sun, 11 Nov 2018 23:31:45 -0600 From: Vijendar Mukunda CC: , , , Vijendar Mukunda , Maruthi Bayyavarapu , Liam Girdwood , "Mark Brown" , Jaroslav Kysela , Takashi Iwai , Maruthi Srinivas Bayyavarapu , Sanju R Mehta , "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." , open list Subject: [PATCH 03/11] ASoC: amd: create ACP3x PCM platform device Date: Mon, 12 Nov 2018 11:04:54 +0530 Message-ID: <1542000903-19020-4-git-send-email-Vijendar.Mukunda@amd.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1542000903-19020-1-git-send-email-Vijendar.Mukunda@amd.com> References: <1542000903-19020-1-git-send-email-Vijendar.Mukunda@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:165.204.84.17;IPV:NLI;CTRY:US;EFV:NLI;SFV:NSPM;SFS:(10009020)(396003)(39860400002)(136003)(376002)(346002)(2980300002)(428003)(189003)(199004)(106466001)(39060400002)(426003)(81166006)(81156014)(16586007)(77096007)(8676002)(48376002)(126002)(476003)(14444005)(47776003)(26005)(72206003)(53416004)(54906003)(36756003)(50466002)(336012)(50226002)(2616005)(105586002)(11346002)(486006)(1671002)(8936002)(478600001)(2906002)(316002)(68736007)(446003)(53936002)(109986005)(97736004)(86362001)(4326008)(7696005)(5660300001)(305945005)(186003)(76176011)(6666004)(356004)(104016004)(51416003)(266003)(32563001);DIR:OUT;SFP:1101;SCL:1;SRVR:BLUPR12MB0419;H:SATLEXCHOV01.amd.com;FPR:;SPF:None;LANG:en;PTR:InfoDomainNonexistent;MX:1;A:1; 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(no To-header on input) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ACP 3x IP has I2S controller device as one of IP blocks. Create a platform device for it, so that the PCM platform driver can be bound to this device. Pass PCI resources like MMIO, irq to the platform device. Signed-off-by: Maruthi Bayyavarapu Tested-by: Ravulapati Vishnu vardhan Rao Signed-off-by: Vijendar Mukunda --- sound/soc/amd/raven/acp3x.h | 4 +++ sound/soc/amd/raven/pci-acp3x.c | 70 ++++++++++++++++++++++++++++++++++++++++- 2 files changed, 73 insertions(+), 1 deletion(-) diff --git a/sound/soc/amd/raven/acp3x.h b/sound/soc/amd/raven/acp3x.h index e9b4df0..83b1ed8 100644 --- a/sound/soc/amd/raven/acp3x.h +++ b/sound/soc/amd/raven/acp3x.h @@ -1,6 +1,10 @@ #include "chip_offset_byte.h" #define ACP3x_PHY_BASE_ADDRESS 0x1240000 +#define ACP3x_I2S_MODE 0 +#define ACP3x_REG_START 0x1240000 +#define ACP3x_REG_END 0x1250200 +#define I2S_MODE 0x04 static inline u32 rv_readl(void __iomem *base_addr) { diff --git a/sound/soc/amd/raven/pci-acp3x.c b/sound/soc/amd/raven/pci-acp3x.c index 27588ed..0700162 100644 --- a/sound/soc/amd/raven/pci-acp3x.c +++ b/sound/soc/amd/raven/pci-acp3x.c @@ -16,19 +16,26 @@ #include #include #include +#include +#include #include "acp3x.h" struct acp3x_dev_data { void __iomem *acp3x_base; + bool acp3x_audio_mode; + struct resource *res; + struct platform_device *pdev; }; static int snd_acp3x_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) { int ret; - u32 addr; + u32 addr, val; struct acp3x_dev_data *adata; + struct platform_device_info pdevinfo; + unsigned int irqflags; if (pci_enable_device(pci)) { dev_err(&pci->dev, "pci_enable_device failed\n"); @@ -48,6 +55,15 @@ static int snd_acp3x_probe(struct pci_dev *pci, goto release_regions; } + /* check for msi interrupt support */ + ret = pci_enable_msi(pci); + if (ret) + /* msi is not enabled */ + irqflags = IRQF_SHARED; + else + /* msi is enabled */ + irqflags = 0; + addr = pci_resource_start(pci, 0); adata->acp3x_base = ioremap(addr, pci_resource_len(pci, 0)); if (!adata->acp3x_base) { @@ -56,8 +72,57 @@ static int snd_acp3x_probe(struct pci_dev *pci, } pci_set_master(pci); pci_set_drvdata(pci, adata); + + 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, + GFP_KERNEL); + if (!adata->res) { + ret = -ENOMEM; + goto unmap_mmio; + } + + adata->res[0].name = "acp3x_i2s_iomem"; + adata->res[0].flags = IORESOURCE_MEM; + 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->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 (!adata->pdev) { + dev_err(&pci->dev, "cannot register %s device\n", + pdevinfo.name); + ret = -ENODEV; + goto unmap_mmio; + } + break; + default: + dev_err(&pci->dev, "Inavlid ACP audio mode : %d\n", val); + ret = -ENODEV; + goto unmap_mmio; + } return 0; +unmap_mmio: + pci_disable_msi(pci); + iounmap(adata->acp3x_base); release_regions: pci_release_regions(pci); disable_pci: @@ -70,7 +135,10 @@ static void snd_acp3x_remove(struct pci_dev *pci) { struct acp3x_dev_data *adata = pci_get_drvdata(pci); + platform_device_unregister(adata->pdev); iounmap(adata->acp3x_base); + + pci_disable_msi(pci); pci_release_regions(pci); pci_disable_device(pci); } -- 2.7.4