ACP 3x IP has PDM decoder as one of IP blocks. Create a platform device for it, so that the PDM platform driver can be bound to this device. Pass PCI resources like MMIO, irq to this platform device.
Signed-off-by: Vijendar Mukunda Vijendar.Mukunda@amd.com --- sound/soc/amd/renoir/rn-pci-acp3x.c | 61 ++++++++++++++++++++++++++++- sound/soc/amd/renoir/rn_acp3x.h | 3 ++ 2 files changed, 62 insertions(+), 2 deletions(-)
diff --git a/sound/soc/amd/renoir/rn-pci-acp3x.c b/sound/soc/amd/renoir/rn-pci-acp3x.c index 429813f6ba1c..362409ef0d85 100644 --- a/sound/soc/amd/renoir/rn-pci-acp3x.c +++ b/sound/soc/amd/renoir/rn-pci-acp3x.c @@ -8,6 +8,8 @@ #include <linux/module.h> #include <linux/io.h> #include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h>
#include "rn_acp3x.h"
@@ -17,6 +19,8 @@ MODULE_PARM_DESC(acp_power_gating, "Enable acp power gating");
struct acp_dev_data { void __iomem *acp_base; + struct resource *res; + struct platform_device *pdev; };
static int rn_acp_power_on(void __iomem *acp_base) @@ -151,6 +155,8 @@ static int snd_rn_acp_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) { struct acp_dev_data *adata; + struct platform_device_info pdevinfo; + unsigned int irqflags; int ret; u32 addr;
@@ -172,20 +178,70 @@ static int snd_rn_acp_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->acp_base = devm_ioremap(&pci->dev, addr, pci_resource_len(pci, 0)); if (!adata->acp_base) { ret = -ENOMEM; - goto release_regions; + goto disable_msi; } pci_set_master(pci); pci_set_drvdata(pci, adata); ret = rn_acp_init(adata->acp_base); if (ret) - goto release_regions; + goto disable_msi; + + adata->res = devm_kzalloc(&pci->dev, + sizeof(struct resource) * 2, + GFP_KERNEL); + if (!adata->res) { + ret = -ENOMEM; + goto de_init; + } + + adata->res[0].name = "acp_pdm_iomem"; + adata->res[0].flags = IORESOURCE_MEM; + adata->res[0].start = addr; + adata->res[0].end = addr + (ACP_REG_END - ACP_REG_START); + adata->res[1].name = "acp_pdm_irq"; + adata->res[1].flags = IORESOURCE_IRQ; + adata->res[1].start = pci->irq; + adata->res[1].end = pci->irq; + + memset(&pdevinfo, 0, sizeof(pdevinfo)); + pdevinfo.name = "acp_rn_pdm_dma"; + 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 (IS_ERR(adata->pdev)) { + dev_err(&pci->dev, "cannot register %s device\n", + pdevinfo.name); + ret = PTR_ERR(adata->pdev); + goto unregister_devs; + } return 0;
+unregister_devs: + platform_device_unregister(adata->pdev); +de_init: + if (rn_acp_deinit(adata->acp_base)) + dev_err(&pci->dev, "ACP de-init failed\n"); +disable_msi: + pci_disable_msi(pci); release_regions: pci_release_regions(pci); disable_pci: @@ -200,6 +256,7 @@ static void snd_rn_acp_remove(struct pci_dev *pci) int ret;
adata = pci_get_drvdata(pci); + platform_device_unregister(adata->pdev); ret = rn_acp_deinit(adata->acp_base); if (ret) dev_err(&pci->dev, "ACP de-init failed\n"); diff --git a/sound/soc/amd/renoir/rn_acp3x.h b/sound/soc/amd/renoir/rn_acp3x.h index ec2a85085163..5e4fd99397d5 100644 --- a/sound/soc/amd/renoir/rn_acp3x.h +++ b/sound/soc/amd/renoir/rn_acp3x.h @@ -8,6 +8,9 @@ #include "rn_chip_offset_byte.h"
#define ACP_PHY_BASE_ADDRESS 0x1240000 +#define ACP_REG_START 0x1240000 +#define ACP_REG_END 0x1250200 + #define ACP_DEVICE_ID 0x15E2 #define ACP_POWER_ON 0x00 #define ACP_POWER_ON_IN_PROGRESS 0x01