ASoC: amd: add platform devices for acp6.2 pdm driver and dmic driver

ACP6.2 IP has PDM decoder block.
Create a platform device for it, so that the PDM platform driver
can be bound to this device.
Pass PCI resources like MMIO to this platform device.

Create a platform device for generic dmic codec driver.

Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@amd.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20220827165657.2343818-5-Syed.SabaKareem@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/amd/ps/acp62.h b/sound/soc/amd/ps/acp62.h
index cb07c06..507cdf8 100644 (file)
--- a/sound/soc/amd/ps/acp62.h
+++ b/sound/soc/amd/ps/acp62.h
@@ -8,6 +8,10 @@
 #include <sound/acp62_chip_offset_byte.h>
 
 #define ACP_DEVICE_ID 0x15E2
+#define ACP6x_REG_START                0x1240000
+#define ACP6x_REG_END          0x1250200
+#define ACP6x_DEVS             2
+#define ACP6x_PDM_MODE         1
 
 #define ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK  0x00010001
 #define ACP_PGFSM_CNTL_POWER_ON_MASK   1
@@ -21,6 +25,25 @@
 #define ACP_ERROR_MASK 0x20000000
 #define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF
 
+enum acp_config {
+       ACP_CONFIG_0 = 0,
+       ACP_CONFIG_1,
+       ACP_CONFIG_2,
+       ACP_CONFIG_3,
+       ACP_CONFIG_4,
+       ACP_CONFIG_5,
+       ACP_CONFIG_6,
+       ACP_CONFIG_7,
+       ACP_CONFIG_8,
+       ACP_CONFIG_9,
+       ACP_CONFIG_10,
+       ACP_CONFIG_11,
+       ACP_CONFIG_12,
+       ACP_CONFIG_13,
+       ACP_CONFIG_14,
+       ACP_CONFIG_15,
+};
+
 static inline u32 acp62_readl(void __iomem *base_addr)
 {
        return readl(base_addr);

diff --git a/sound/soc/amd/ps/pci-ps.c b/sound/soc/amd/ps/pci-ps.c
index a87dbf8..adad296 100644 (file)
--- a/sound/soc/amd/ps/pci-ps.c
+++ b/sound/soc/amd/ps/pci-ps.c
@@ -9,11 +9,16 @@
 #include <linux/module.h>
 #include <linux/io.h>
 #include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/acpi.h>
 
 #include "acp62.h"
 
 struct acp62_dev_data {
        void __iomem *acp62_base;
+       struct resource *res;
+       bool acp62_audio_mode;
+       struct platform_device *pdev[ACP6x_DEVS];
 };
 
 static int acp62_power_on(void __iomem *acp_base)
@@ -114,8 +119,12 @@ static int snd_acp62_probe(struct pci_dev *pci,
                           const struct pci_device_id *pci_id)
 {
        struct acp62_dev_data *adata;
+       struct platform_device_info pdevinfo[ACP6x_DEVS];
+       int index, ret;
+       int val = 0x00;
+       struct acpi_device *adev;
+       const union acpi_object *obj;
        u32 addr;
-       int ret;
 
        /* Pink Sardine device check */
        switch (pci->revision) {
@@ -154,8 +163,72 @@ static int snd_acp62_probe(struct pci_dev *pci,
        ret = acp62_init(adata->acp62_base, &pci->dev);
        if (ret)
                goto release_regions;
+       val = acp62_readl(adata->acp62_base + ACP_PIN_CONFIG);
+       switch (val) {
+       case ACP_CONFIG_0:
+       case ACP_CONFIG_1:
+       case ACP_CONFIG_2:
+       case ACP_CONFIG_3:
+       case ACP_CONFIG_9:
+       case ACP_CONFIG_15:
+               dev_info(&pci->dev, "Audio Mode %d\n", val);
+               break;
+       default:
+
+               /* Checking DMIC hardware*/
+               adev = acpi_find_child_device(ACPI_COMPANION(&pci->dev), 0x02, 0);
+
+               if (!adev)
+                       break;
+
+               if (!acpi_dev_get_property(adev, "acp-audio-device-type",
+                                          ACPI_TYPE_INTEGER, &obj) &&
+                                          obj->integer.value == 2) {
+                       adata->res = devm_kzalloc(&pci->dev, sizeof(struct resource), GFP_KERNEL);
+                       if (!adata->res) {
+                               ret = -ENOMEM;
+                               goto de_init;
+                       }
+
+                       adata->res->name = "acp_iomem";
+                       adata->res->flags = IORESOURCE_MEM;
+                       adata->res->start = addr;
+                       adata->res->end = addr + (ACP6x_REG_END - ACP6x_REG_START);
+                       adata->acp62_audio_mode = ACP6x_PDM_MODE;
 
+                       memset(&pdevinfo, 0, sizeof(pdevinfo));
+                       pdevinfo[0].name = "acp_ps_pdm_dma";
+                       pdevinfo[0].id = 0;
+                       pdevinfo[0].parent = &pci->dev;
+                       pdevinfo[0].num_res = 1;
+                       pdevinfo[0].res = adata->res;
+
+                       pdevinfo[1].name = "dmic-codec";
+                       pdevinfo[1].id = 0;
+                       pdevinfo[1].parent = &pci->dev;
+
+                       for (index = 0; index < ACP6x_DEVS; index++) {
+                               adata->pdev[index] =
+                                       platform_device_register_full(&pdevinfo[index]);
+
+                               if (IS_ERR(adata->pdev[index])) {
+                                       dev_err(&pci->dev,
+                                               "cannot register %s device\n",
+                                                pdevinfo[index].name);
+                                       ret = PTR_ERR(adata->pdev[index]);
+                                       goto unregister_devs;
+                               }
+                       }
+               }
+               break;
+       }
        return 0;
+unregister_devs:
+       for (--index; index >= 0; index--)
+               platform_device_unregister(adata->pdev[index]);
+de_init:
+       if (acp62_deinit(adata->acp62_base, &pci->dev))
+               dev_err(&pci->dev, "ACP de-init failed\n");
 release_regions:
        pci_release_regions(pci);
 disable_pci:
@@ -167,9 +240,13 @@ disable_pci:
 static void snd_acp62_remove(struct pci_dev *pci)
 {
        struct acp62_dev_data *adata;
-       int ret;
+       int ret, index;
 
        adata = pci_get_drvdata(pci);
+       if (adata->acp62_audio_mode == ACP6x_PDM_MODE) {
+               for (index = 0; index < ACP6x_DEVS; index++)
+                       platform_device_unregister(adata->pdev[index]);
+       }
        ret = acp62_deinit(adata->acp62_base, &pci->dev);
        if (ret)
                dev_err(&pci->dev, "ACP de-init failed\n");