[PATCH 06/13] ASoC: amd: acp: add code for scanning acp pdm controller
From: Syed Saba Kareem
Date: Sat Oct 21 2023 - 10:52:28 EST
Add common code for scanning acp pdm controller and create
platform device for the same.
Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@xxxxxxx>
---
sound/soc/amd/acp/acp-legacy-common.c | 52 +++++++++++++++++++++++++++
sound/soc/amd/acp/acp-pci.c | 11 +++++-
sound/soc/amd/acp/amd.h | 22 ++++++++++++
sound/soc/amd/acp/chip_offset_byte.h | 1 +
sound/soc/amd/mach-config.h | 1 +
5 files changed, 86 insertions(+), 1 deletion(-)
diff --git a/sound/soc/amd/acp/acp-legacy-common.c b/sound/soc/amd/acp/acp-legacy-common.c
index e16ef94e6336..af85a153a770 100644
--- a/sound/soc/amd/acp/acp-legacy-common.c
+++ b/sound/soc/amd/acp/acp-legacy-common.c
@@ -16,6 +16,10 @@
#include <linux/pci.h>
#include <linux/export.h>
+#define ACP_RENOIR_PDM_ADDR 0x02
+#define ACP_REMBRANDT_PDM_ADDR 0x03
+#define ACP63_PDM_ADDR 0x02
+
void acp_enable_interrupts(struct acp_dev_data *adata)
{
struct acp_resource *rsrc = adata->rsrc;
@@ -348,4 +352,52 @@ int smn_read(struct pci_dev *dev, u32 smn_addr)
}
EXPORT_SYMBOL_NS_GPL(smn_read, SND_SOC_ACP_COMMON);
+int check_acp_pdm(struct pci_dev *pci, struct acp_chip_info *chip)
+{
+ struct acpi_device *pdm_dev;
+ const union acpi_object *obj;
+ u32 pdm_addr, val;
+
+ val = readl(chip->base + ACP_PIN_CONFIG);
+ switch (val) {
+ case ACP_CONFIG_4:
+ case ACP_CONFIG_5:
+ case ACP_CONFIG_6:
+ case ACP_CONFIG_7:
+ case ACP_CONFIG_8:
+ case ACP_CONFIG_10:
+ case ACP_CONFIG_11:
+ case ACP_CONFIG_12:
+ case ACP_CONFIG_13:
+ case ACP_CONFIG_14:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (chip->acp_rev) {
+ case ACP3X_DEV:
+ pdm_addr = ACP_RENOIR_PDM_ADDR;
+ break;
+ case ACP6X_DEV:
+ pdm_addr = ACP_REMBRANDT_PDM_ADDR;
+ break;
+ case ACP63_DEV:
+ pdm_addr = ACP63_PDM_ADDR;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ pdm_dev = acpi_find_child_device(ACPI_COMPANION(&pci->dev), pdm_addr, 0);
+ if (pdm_dev) {
+ if (!acpi_dev_get_property(pdm_dev, "acp-audio-device-type",
+ ACPI_TYPE_INTEGER, &obj) &&
+ obj->integer.value == pdm_addr)
+ return 0;
+ }
+ return -ENODEV;
+}
+EXPORT_SYMBOL_NS_GPL(check_acp_pdm, SND_SOC_ACP_COMMON);
+
MODULE_LICENSE("Dual BSD/GPL");
diff --git a/sound/soc/amd/acp/acp-pci.c b/sound/soc/amd/acp/acp-pci.c
index d7fc4a0e9245..bbf079d47dc4 100644
--- a/sound/soc/amd/acp/acp-pci.c
+++ b/sound/soc/amd/acp/acp-pci.c
@@ -55,7 +55,7 @@ static int acp_pci_probe(struct pci_dev *pci, const struct pci_device_id *pci_id
int ret;
flag = snd_amd_acp_find_config(pci);
- if (flag != FLAG_AMD_LEGACY)
+ if (flag != FLAG_AMD_LEGACY && flag != FLAG_AMD_LEGACY_ONLY_DMIC)
return -ENODEV;
chip = devm_kzalloc(&pci->dev, sizeof(*chip), GFP_KERNEL);
@@ -129,6 +129,13 @@ static int acp_pci_probe(struct pci_dev *pci, const struct pci_device_id *pci_id
}
}
+ if (flag == FLAG_AMD_LEGACY_ONLY_DMIC) {
+ ret = check_acp_pdm(pci, chip);
+ if (ret < 0)
+ goto skip_pdev_creation;
+ }
+
+ chip->flag = flag;
memset(&pdevinfo, 0, sizeof(pdevinfo));
pdevinfo.name = chip->name;
@@ -145,6 +152,8 @@ static int acp_pci_probe(struct pci_dev *pci, const struct pci_device_id *pci_id
ret = PTR_ERR(pdev);
goto unregister_dmic_dev;
}
+
+skip_pdev_creation:
chip->chip_pdev = pdev;
dev_set_drvdata(&pci->dev, chip);
pm_runtime_set_autosuspend_delay(&pci->dev, 2000);
diff --git a/sound/soc/amd/acp/amd.h b/sound/soc/amd/acp/amd.h
index 87d1e1f7d6b6..2ffe1effc6b5 100644
--- a/sound/soc/amd/acp/amd.h
+++ b/sound/soc/amd/acp/amd.h
@@ -133,6 +133,7 @@ struct acp_chip_info {
unsigned int acp_rev; /* ACP Revision id */
void __iomem *base; /* ACP memory PCI base */
struct platform_device *chip_pdev;
+ unsigned int flag; /* Distinguish b/w Legacy or Only PDM */
};
struct acp_stream {
@@ -188,6 +189,25 @@ struct acp_dev_data {
u32 xfer_rx_resolution[3];
};
+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,
+};
+
extern const struct snd_soc_dai_ops asoc_acp_cpu_dai_ops;
extern const struct snd_soc_dai_ops acp_dmic_dai_ops;
@@ -214,6 +234,8 @@ void restore_acp_pdm_params(struct snd_pcm_substream *substream,
int restore_acp_i2s_params(struct snd_pcm_substream *substream,
struct acp_dev_data *adata, struct acp_stream *stream);
+int check_acp_pdm(struct pci_dev *pci, struct acp_chip_info *chip);
+
static inline u64 acp_get_byte_count(struct acp_dev_data *adata, int dai_id, int direction)
{
u64 byte_count = 0, low = 0, high = 0;
diff --git a/sound/soc/amd/acp/chip_offset_byte.h b/sound/soc/amd/acp/chip_offset_byte.h
index ce3948e0679c..cfd6c4d07594 100644
--- a/sound/soc/amd/acp/chip_offset_byte.h
+++ b/sound/soc/amd/acp/chip_offset_byte.h
@@ -19,6 +19,7 @@
#define ACP_PGFSM_STATUS 0x1420
#define ACP_SOFT_RESET 0x1000
#define ACP_CONTROL 0x1004
+#define ACP_PIN_CONFIG 0x1440
#define ACP_EXTERNAL_INTR_REG_ADDR(adata, offset, ctrl) \
(adata->acp_base + adata->rsrc->irq_reg_offset + offset + (ctrl * 0x04))
diff --git a/sound/soc/amd/mach-config.h b/sound/soc/amd/mach-config.h
index d392e6d6e6e1..e6b520459164 100644
--- a/sound/soc/amd/mach-config.h
+++ b/sound/soc/amd/mach-config.h
@@ -15,6 +15,7 @@
#define FLAG_AMD_SOF BIT(1)
#define FLAG_AMD_SOF_ONLY_DMIC BIT(2)
#define FLAG_AMD_LEGACY BIT(3)
+#define FLAG_AMD_LEGACY_ONLY_DMIC BIT(4)
#define ACP_PCI_DEV_ID 0x15E2
--
2.25.1