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authorMark Brown <broonie@kernel.org>2023-06-21 00:56:07 +0100
committerMark Brown <broonie@kernel.org>2023-06-21 00:56:07 +0100
commit9bd1f9dbbf9b395e0f18661850fc923d129729af (patch)
tree809dd32bbc63fb30386982d1f45b769ae5006bcf /sound
parent3067e020d361ed346957eb5e253911f7a3e18f59 (diff)
parent198c93e2fc0b74ae520393118d7cb02762c04bf3 (diff)
ASoC: amd: ps: add SoundWire support
Merge series from Vijendar Mukunda <Vijendar.Mukunda@amd.com>: This patch series add support for - Platform device creation for SoundWire Manager instances and PDM controller. - SoundWire DMA driver. - Interrupt handling for SoundWire manager related interrupts, SoundWire DMA interrupts and ACP error interrupts. - ACP PCI driver PM ops modification with respect to SoundWire Power modes.
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/amd/Kconfig3
-rw-r--r--sound/soc/amd/ps/Makefile2
-rw-r--r--sound/soc/amd/ps/acp63.h172
-rw-r--r--sound/soc/amd/ps/pci-ps.c419
-rw-r--r--sound/soc/amd/ps/ps-sdw-dma.c555
5 files changed, 1115 insertions, 36 deletions
diff --git a/sound/soc/amd/Kconfig b/sound/soc/amd/Kconfig
index 57d5e342a8eb..1dd8579e8034 100644
--- a/sound/soc/amd/Kconfig
+++ b/sound/soc/amd/Kconfig
@@ -138,7 +138,8 @@ config SND_SOC_AMD_PS
help
This option enables Audio Coprocessor i.e ACP v6.3 support on
AMD Pink sardine platform. By enabling this flag build will be
- triggered for ACP PCI driver, ACP PDM DMA driver.
+ triggered for ACP PCI driver, ACP PDM DMA driver, ACP SoundWire
+ DMA driver.
Say m if you have such a device.
If unsure select "N".
diff --git a/sound/soc/amd/ps/Makefile b/sound/soc/amd/ps/Makefile
index 383973a12f6a..f2a5eaf2fa4d 100644
--- a/sound/soc/amd/ps/Makefile
+++ b/sound/soc/amd/ps/Makefile
@@ -3,7 +3,9 @@
snd-pci-ps-objs := pci-ps.o
snd-ps-pdm-dma-objs := ps-pdm-dma.o
snd-soc-ps-mach-objs := ps-mach.o
+snd-ps-sdw-dma-objs := ps-sdw-dma.o
obj-$(CONFIG_SND_SOC_AMD_PS) += snd-pci-ps.o
obj-$(CONFIG_SND_SOC_AMD_PS) += snd-ps-pdm-dma.o
+obj-$(CONFIG_SND_SOC_AMD_PS) += snd-ps-sdw-dma.o
obj-$(CONFIG_SND_SOC_AMD_PS_MACH) += snd-soc-ps-mach.o
diff --git a/sound/soc/amd/ps/acp63.h b/sound/soc/amd/ps/acp63.h
index 2f94448102d0..e96e6dc9d90f 100644
--- a/sound/soc/amd/ps/acp63.h
+++ b/sound/soc/amd/ps/acp63.h
@@ -10,7 +10,7 @@
#define ACP_DEVICE_ID 0x15E2
#define ACP63_REG_START 0x1240000
#define ACP63_REG_END 0x1250200
-#define ACP63_DEVS 3
+#define ACP63_DEVS 5
#define ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK 0x00010001
#define ACP_PGFSM_CNTL_POWER_ON_MASK 1
@@ -53,14 +53,99 @@
/* time in ms for runtime suspend delay */
#define ACP_SUSPEND_DELAY_MS 2000
-#define ACP63_DMIC_ADDR 2
-#define ACP63_PDM_MODE_DEVS 3
-#define ACP63_PDM_DEV_MASK 1
#define ACP_DMIC_DEV 2
+/* ACP63_PDM_MODE_DEVS corresponds to platform devices count for ACP PDM configuration */
+#define ACP63_PDM_MODE_DEVS 3
+
+/*
+ * ACP63_SDW0_MODE_DEVS corresponds to platform devices count for
+ * SW0 SoundWire manager instance configuration
+ */
+#define ACP63_SDW0_MODE_DEVS 2
+
+/*
+ * ACP63_SDW0_SDW1_MODE_DEVS corresponds to platform devices count for SW0 + SW1 SoundWire manager
+ * instances configuration
+ */
+#define ACP63_SDW0_SDW1_MODE_DEVS 3
+
+/*
+ * ACP63_SDW0_PDM_MODE_DEVS corresponds to platform devices count for SW0 manager
+ * instance + ACP PDM controller configuration
+ */
+#define ACP63_SDW0_PDM_MODE_DEVS 4
+
+/*
+ * ACP63_SDW0_SDW1_PDM_MODE_DEVS corresponds to platform devices count for
+ * SW0 + SW1 SoundWire manager instances + ACP PDM controller configuration
+ */
+#define ACP63_SDW0_SDW1_PDM_MODE_DEVS 5
+#define ACP63_DMIC_ADDR 2
+#define ACP63_SDW_ADDR 5
+#define AMD_SDW_MAX_MANAGERS 2
+
/* time in ms for acp timeout */
#define ACP_TIMEOUT 500
+/* ACP63_PDM_DEV_CONFIG corresponds to platform device configuration for ACP PDM controller */
+#define ACP63_PDM_DEV_CONFIG BIT(0)
+
+/* ACP63_SDW_DEV_CONFIG corresponds to platform device configuration for SDW manager instances */
+#define ACP63_SDW_DEV_CONFIG BIT(1)
+
+/*
+ * ACP63_SDW_PDM_DEV_CONFIG corresponds to platform device configuration for ACP PDM + SoundWire
+ * manager instance combination.
+ */
+#define ACP63_SDW_PDM_DEV_CONFIG GENMASK(1, 0)
+#define ACP_SDW0_STAT BIT(21)
+#define ACP_SDW1_STAT BIT(2)
+#define ACP_ERROR_IRQ BIT(29)
+
+#define ACP_AUDIO0_TX_THRESHOLD 0x1c
+#define ACP_AUDIO1_TX_THRESHOLD 0x1a
+#define ACP_AUDIO2_TX_THRESHOLD 0x18
+#define ACP_AUDIO0_RX_THRESHOLD 0x1b
+#define ACP_AUDIO1_RX_THRESHOLD 0x19
+#define ACP_AUDIO2_RX_THRESHOLD 0x17
+#define ACP_P1_AUDIO1_TX_THRESHOLD BIT(6)
+#define ACP_P1_AUDIO1_RX_THRESHOLD BIT(5)
+#define ACP_SDW_DMA_IRQ_MASK 0x1F800000
+#define ACP_P1_SDW_DMA_IRQ_MASK 0x60
+#define ACP63_SDW0_DMA_MAX_STREAMS 6
+#define ACP63_SDW1_DMA_MAX_STREAMS 2
+#define ACP_P1_AUDIO_TX_THRESHOLD 6
+#define SDW0_DMA_TX_IRQ_MASK(i) (ACP_AUDIO0_TX_THRESHOLD - (2 * (i)))
+#define SDW0_DMA_RX_IRQ_MASK(i) (ACP_AUDIO0_RX_THRESHOLD - (2 * (i)))
+#define SDW1_DMA_IRQ_MASK(i) (ACP_P1_AUDIO_TX_THRESHOLD - (i))
+
+#define ACP_DELAY_US 5
+#define ACP_SDW_RING_BUFF_ADDR_OFFSET (128 * 1024)
+#define SDW0_MEM_WINDOW_START 0x4800000
+#define ACP_SDW_SRAM_PTE_OFFSET 0x03800400
+#define SDW0_PTE_OFFSET 0x400
+#define SDW_FIFO_SIZE 0x100
+#define SDW_DMA_SIZE 0x40
+#define ACP_SDW0_FIFO_OFFSET 0x100
+#define ACP_SDW_PTE_OFFSET 0x100
+#define SDW_FIFO_OFFSET 0x100
+#define SDW_PTE_OFFSET(i) (SDW0_PTE_OFFSET + ((i) * 0x600))
+#define ACP_SDW_FIFO_OFFSET(i) (ACP_SDW0_FIFO_OFFSET + ((i) * 0x500))
+#define SDW_MEM_WINDOW_START(i) (SDW0_MEM_WINDOW_START + ((i) * 0xC0000))
+
+#define SDW_PLAYBACK_MIN_NUM_PERIODS 2
+#define SDW_PLAYBACK_MAX_NUM_PERIODS 8
+#define SDW_PLAYBACK_MAX_PERIOD_SIZE 8192
+#define SDW_PLAYBACK_MIN_PERIOD_SIZE 1024
+#define SDW_CAPTURE_MIN_NUM_PERIODS 2
+#define SDW_CAPTURE_MAX_NUM_PERIODS 8
+#define SDW_CAPTURE_MAX_PERIOD_SIZE 8192
+#define SDW_CAPTURE_MIN_PERIOD_SIZE 1024
+
+#define SDW_MAX_BUFFER (SDW_PLAYBACK_MAX_PERIOD_SIZE * SDW_PLAYBACK_MAX_NUM_PERIODS)
+#define SDW_MIN_BUFFER SDW_MAX_BUFFER
+
enum acp_config {
ACP_CONFIG_0 = 0,
ACP_CONFIG_1,
@@ -80,6 +165,20 @@ enum acp_config {
ACP_CONFIG_15,
};
+enum amd_sdw0_channel {
+ ACP_SDW0_AUDIO0_TX = 0,
+ ACP_SDW0_AUDIO1_TX,
+ ACP_SDW0_AUDIO2_TX,
+ ACP_SDW0_AUDIO0_RX,
+ ACP_SDW0_AUDIO1_RX,
+ ACP_SDW0_AUDIO2_RX,
+};
+
+enum amd_sdw1_channel {
+ ACP_SDW1_AUDIO1_TX,
+ ACP_SDW1_AUDIO1_RX,
+};
+
struct pdm_stream_instance {
u16 num_pages;
u16 channels;
@@ -95,14 +194,77 @@ struct pdm_dev_data {
struct snd_pcm_substream *capture_stream;
};
+struct sdw_dma_dev_data {
+ void __iomem *acp_base;
+ struct mutex *acp_lock; /* used to protect acp common register access */
+ struct snd_pcm_substream *sdw0_dma_stream[ACP63_SDW0_DMA_MAX_STREAMS];
+ struct snd_pcm_substream *sdw1_dma_stream[ACP63_SDW1_DMA_MAX_STREAMS];
+};
+
+struct acp_sdw_dma_stream {
+ u16 num_pages;
+ u16 channels;
+ u32 stream_id;
+ u32 instance;
+ dma_addr_t dma_addr;
+ u64 bytescount;
+};
+
+union acp_sdw_dma_count {
+ struct {
+ u32 low;
+ u32 high;
+ } bcount;
+ u64 bytescount;
+};
+
+struct sdw_dma_ring_buf_reg {
+ u32 reg_dma_size;
+ u32 reg_fifo_addr;
+ u32 reg_fifo_size;
+ u32 reg_ring_buf_size;
+ u32 reg_ring_buf_addr;
+ u32 water_mark_size_reg;
+ u32 pos_low_reg;
+ u32 pos_high_reg;
+};
+
+/**
+ * struct acp63_dev_data - acp pci driver context
+ * @acp63_base: acp mmio base
+ * @res: resource
+ * @pdev: array of child platform device node structures
+ * @acp_lock: used to protect acp common registers
+ * @sdw_fw_node: SoundWire controller fw node handle
+ * @pdev_config: platform device configuration
+ * @pdev_count: platform devices count
+ * @pdm_dev_index: pdm platform device index
+ * @sdw_manager_count: SoundWire manager instance count
+ * @sdw0_dev_index: SoundWire Manager-0 platform device index
+ * @sdw1_dev_index: SoundWire Manager-1 platform device index
+ * @sdw_dma_dev_index: SoundWire DMA controller platform device index
+ * @sdw0-dma_intr_stat: DMA interrupt status array for SoundWire manager-SW0 instance
+ * @sdw_dma_intr_stat: DMA interrupt status array for SoundWire manager-SW1 instance
+ * @acp_reset: flag set to true when bus reset is applied across all
+ * the active SoundWire manager instances
+ */
+
struct acp63_dev_data {
void __iomem *acp63_base;
struct resource *res;
struct platform_device *pdev[ACP63_DEVS];
struct mutex acp_lock; /* protect shared registers */
- u16 pdev_mask;
+ struct fwnode_handle *sdw_fw_node;
+ u16 pdev_config;
u16 pdev_count;
u16 pdm_dev_index;
+ u8 sdw_manager_count;
+ u16 sdw0_dev_index;
+ u16 sdw1_dev_index;
+ u16 sdw_dma_dev_index;
+ u16 sdw0_dma_intr_stat[ACP63_SDW0_DMA_MAX_STREAMS];
+ u16 sdw1_dma_intr_stat[ACP63_SDW1_DMA_MAX_STREAMS];
+ bool acp_reset;
};
int snd_amd_acp_find_config(struct pci_dev *pci);
diff --git a/sound/soc/amd/ps/pci-ps.c b/sound/soc/amd/ps/pci-ps.c
index 54752d6040d6..5b46dc8573f8 100644
--- a/sound/soc/amd/ps/pci-ps.c
+++ b/sound/soc/amd/ps/pci-ps.c
@@ -6,6 +6,7 @@
*/
#include <linux/pci.h>
+#include <linux/bitops.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/delay.h>
@@ -15,6 +16,7 @@
#include <sound/pcm_params.h>
#include <linux/pm_runtime.h>
#include <linux/iopoll.h>
+#include <linux/soundwire/sdw_amd.h>
#include "acp63.h"
@@ -54,6 +56,7 @@ static int acp63_reset(void __iomem *acp_base)
static void acp63_enable_interrupts(void __iomem *acp_base)
{
writel(1, acp_base + ACP_EXTERNAL_INTR_ENB);
+ writel(ACP_ERROR_IRQ, acp_base + ACP_EXTERNAL_INTR_CNTL);
}
static void acp63_disable_interrupts(void __iomem *acp_base)
@@ -96,60 +99,302 @@ static int acp63_deinit(void __iomem *acp_base, struct device *dev)
return 0;
}
+static irqreturn_t acp63_irq_thread(int irq, void *context)
+{
+ struct sdw_dma_dev_data *sdw_dma_data;
+ struct acp63_dev_data *adata = context;
+ u32 stream_index;
+ u16 pdev_index;
+
+ pdev_index = adata->sdw_dma_dev_index;
+ sdw_dma_data = dev_get_drvdata(&adata->pdev[pdev_index]->dev);
+
+ for (stream_index = 0; stream_index < ACP63_SDW0_DMA_MAX_STREAMS; stream_index++) {
+ if (adata->sdw0_dma_intr_stat[stream_index]) {
+ if (sdw_dma_data->sdw0_dma_stream[stream_index])
+ snd_pcm_period_elapsed(sdw_dma_data->sdw0_dma_stream[stream_index]);
+ adata->sdw0_dma_intr_stat[stream_index] = 0;
+ }
+ }
+ for (stream_index = 0; stream_index < ACP63_SDW1_DMA_MAX_STREAMS; stream_index++) {
+ if (adata->sdw1_dma_intr_stat[stream_index]) {
+ if (sdw_dma_data->sdw1_dma_stream[stream_index])
+ snd_pcm_period_elapsed(sdw_dma_data->sdw1_dma_stream[stream_index]);
+ adata->sdw1_dma_intr_stat[stream_index] = 0;
+ }
+ }
+ return IRQ_HANDLED;
+}
+
static irqreturn_t acp63_irq_handler(int irq, void *dev_id)
{
struct acp63_dev_data *adata;
struct pdm_dev_data *ps_pdm_data;
- u32 val;
+ struct amd_sdw_manager *amd_manager;
+ u32 ext_intr_stat, ext_intr_stat1;
+ u32 stream_id = 0;
+ u16 irq_flag = 0;
+ u16 sdw_dma_irq_flag = 0;
u16 pdev_index;
+ u16 index;
adata = dev_id;
if (!adata)
return IRQ_NONE;
+ /* ACP interrupts will be cleared by reading particular bit and writing
+ * same value to the status register. writing zero's doesn't have any
+ * effect.
+ * Bit by bit checking of IRQ field is implemented.
+ */
+ ext_intr_stat = readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
+ if (ext_intr_stat & ACP_SDW0_STAT) {
+ writel(ACP_SDW0_STAT, adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
+ pdev_index = adata->sdw0_dev_index;
+ amd_manager = dev_get_drvdata(&adata->pdev[pdev_index]->dev);
+ if (amd_manager)
+ schedule_work(&amd_manager->amd_sdw_irq_thread);
+ irq_flag = 1;
+ }
+
+ ext_intr_stat1 = readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
+ if (ext_intr_stat1 & ACP_SDW1_STAT) {
+ writel(ACP_SDW1_STAT, adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
+ pdev_index = adata->sdw1_dev_index;
+ amd_manager = dev_get_drvdata(&adata->pdev[pdev_index]->dev);
+ if (amd_manager)
+ schedule_work(&amd_manager->amd_sdw_irq_thread);
+ irq_flag = 1;
+ }
+
+ if (ext_intr_stat & ACP_ERROR_IRQ) {
+ writel(ACP_ERROR_IRQ, adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
+ /* TODO: Report SoundWire Manager instance errors */
+ writel(0, adata->acp63_base + ACP_SW0_I2S_ERROR_REASON);
+ writel(0, adata->acp63_base + ACP_SW1_I2S_ERROR_REASON);
+ writel(0, adata->acp63_base + ACP_ERROR_STATUS);
+ irq_flag = 1;
+ }
- val = readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
- if (val & BIT(PDM_DMA_STAT)) {
+ if (ext_intr_stat & BIT(PDM_DMA_STAT)) {
pdev_index = adata->pdm_dev_index;
ps_pdm_data = dev_get_drvdata(&adata->pdev[pdev_index]->dev);
writel(BIT(PDM_DMA_STAT), adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
if (ps_pdm_data->capture_stream)
snd_pcm_period_elapsed(ps_pdm_data->capture_stream);
+ irq_flag = 1;
+ }
+ if (ext_intr_stat & ACP_SDW_DMA_IRQ_MASK) {
+ for (index = ACP_AUDIO2_RX_THRESHOLD; index <= ACP_AUDIO0_TX_THRESHOLD; index++) {
+ if (ext_intr_stat & BIT(index)) {
+ writel(BIT(index), adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
+ switch (index) {
+ case ACP_AUDIO0_TX_THRESHOLD:
+ stream_id = ACP_SDW0_AUDIO0_TX;
+ break;
+ case ACP_AUDIO1_TX_THRESHOLD:
+ stream_id = ACP_SDW0_AUDIO1_TX;
+ break;
+ case ACP_AUDIO2_TX_THRESHOLD:
+ stream_id = ACP_SDW0_AUDIO2_TX;
+ break;
+ case ACP_AUDIO0_RX_THRESHOLD:
+ stream_id = ACP_SDW0_AUDIO0_RX;
+ break;
+ case ACP_AUDIO1_RX_THRESHOLD:
+ stream_id = ACP_SDW0_AUDIO1_RX;
+ break;
+ case ACP_AUDIO2_RX_THRESHOLD:
+ stream_id = ACP_SDW0_AUDIO2_RX;
+ break;
+ }
+
+ adata->sdw0_dma_intr_stat[stream_id] = 1;
+ sdw_dma_irq_flag = 1;
+ }
+ }
+ }
+
+ if (ext_intr_stat1 & ACP_P1_AUDIO1_RX_THRESHOLD) {
+ writel(ACP_P1_AUDIO1_RX_THRESHOLD,
+ adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
+ adata->sdw1_dma_intr_stat[ACP_SDW1_AUDIO1_RX] = 1;
+ sdw_dma_irq_flag = 1;
+ }
+
+ if (ext_intr_stat1 & ACP_P1_AUDIO1_TX_THRESHOLD) {
+ writel(ACP_P1_AUDIO1_TX_THRESHOLD,
+ adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
+ adata->sdw1_dma_intr_stat[ACP_SDW1_AUDIO1_TX] = 1;
+ sdw_dma_irq_flag = 1;
+ }
+
+ if (sdw_dma_irq_flag)
+ return IRQ_WAKE_THREAD;
+
+ if (irq_flag)
return IRQ_HANDLED;
+ else
+ return IRQ_NONE;
+}
+
+static int sdw_amd_scan_controller(struct device *dev)
+{
+ struct acp63_dev_data *acp_data;
+ struct fwnode_handle *link;
+ char name[32];
+ u32 sdw_manager_bitmap;
+ u8 count = 0;
+ u32 acp_sdw_power_mode = 0;
+ int index;
+ int ret;
+
+ acp_data = dev_get_drvdata(dev);
+ /*
+ * Current implementation is based on MIPI DisCo 2.0 spec.
+ * Found controller, find links supported.
+ */
+ ret = fwnode_property_read_u32_array((acp_data->sdw_fw_node), "mipi-sdw-manager-list",
+ &sdw_manager_bitmap, 1);
+
+ if (ret) {
+ dev_err(dev, "Failed to read mipi-sdw-manager-list: %d\n", ret);
+ return -EINVAL;
}
- return IRQ_NONE;
+ count = hweight32(sdw_manager_bitmap);
+ /* Check count is within bounds */
+ if (count > AMD_SDW_MAX_MANAGERS) {
+ dev_err(dev, "Manager count %d exceeds max %d\n", count, AMD_SDW_MAX_MANAGERS);
+ return -EINVAL;
+ }
+
+ if (!count) {
+ dev_dbg(dev, "No SoundWire Managers detected\n");
+ return -EINVAL;
+ }
+ dev_dbg(dev, "ACPI reports %d SoundWire Manager devices\n", count);
+ acp_data->sdw_manager_count = count;
+ for (index = 0; index < count; index++) {
+ snprintf(name, sizeof(name), "mipi-sdw-link-%d-subproperties", index);
+ link = fwnode_get_named_child_node(acp_data->sdw_fw_node, name);
+ if (!link) {
+ dev_err(dev, "Manager node %s not found\n", name);
+ return -EIO;
+ }
+
+ ret = fwnode_property_read_u32(link, "amd-sdw-power-mode", &acp_sdw_power_mode);
+ if (ret)
+ return ret;
+ /*
+ * when SoundWire configuration is selected from acp pin config,
+ * based on manager instances count, acp init/de-init sequence should be
+ * executed as part of PM ops only when Bus reset is applied for the active
+ * SoundWire manager instances.
+ */
+ if (acp_sdw_power_mode != AMD_SDW_POWER_OFF_MODE) {
+ acp_data->acp_reset = false;
+ return 0;
+ }
+ }
+ return 0;
}
-static void get_acp63_device_config(u32 config, struct pci_dev *pci,
- struct acp63_dev_data *acp_data)
+static int get_acp63_device_config(u32 config, struct pci_dev *pci, struct acp63_dev_data *acp_data)
{
struct acpi_device *dmic_dev;
+ struct acpi_device *sdw_dev;
const union acpi_object *obj;
bool is_dmic_dev = false;
+ bool is_sdw_dev = false;
+ int ret;
dmic_dev = acpi_find_child_device(ACPI_COMPANION(&pci->dev), ACP63_DMIC_ADDR, 0);
if (dmic_dev) {
+ /* is_dmic_dev flag will be set when ACP PDM controller device exists */
if (!acpi_dev_get_property(dmic_dev, "acp-audio-device-type",
ACPI_TYPE_INTEGER, &obj) &&
obj->integer.value == ACP_DMIC_DEV)
is_dmic_dev = true;
}
+ sdw_dev = acpi_find_child_device(ACPI_COMPANION(&pci->dev), ACP63_SDW_ADDR, 0);
+ if (sdw_dev) {
+ acp_data->sdw_fw_node = acpi_fwnode_handle(sdw_dev);
+ ret = sdw_amd_scan_controller(&pci->dev);
+ /* is_sdw_dev flag will be set when SoundWire Manager device exists */
+ if (!ret)
+ is_sdw_dev = true;
+ }
+ if (!is_dmic_dev && !is_sdw_dev)
+ return -ENODEV;
+ dev_dbg(&pci->dev, "Audio Mode %d\n", config);
switch (config) {
- case ACP_CONFIG_0:
- case ACP_CONFIG_1:
+ case ACP_CONFIG_4:
+ case ACP_CONFIG_5:
+ case ACP_CONFIG_10:
+ case ACP_CONFIG_11:
+ if (is_dmic_dev) {
+ acp_data->pdev_config = ACP63_PDM_DEV_CONFIG;
+ acp_data->pdev_count = ACP63_PDM_MODE_DEVS;
+ }
+ break;
case ACP_CONFIG_2:
case ACP_CONFIG_3:
- case ACP_CONFIG_9:
- case ACP_CONFIG_15:
- dev_dbg(&pci->dev, "Audio Mode %d\n", config);
+ if (is_sdw_dev) {
+ switch (acp_data->sdw_manager_count) {
+ case 1:
+ acp_data->pdev_config = ACP63_SDW_DEV_CONFIG;
+ acp_data->pdev_count = ACP63_SDW0_MODE_DEVS;
+ break;
+ case 2:
+ acp_data->pdev_config = ACP63_SDW_DEV_CONFIG;
+ acp_data->pdev_count = ACP63_SDW0_SDW1_MODE_DEVS;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
break;
- default:
- if (is_dmic_dev) {
- acp_data->pdev_mask = ACP63_PDM_DEV_MASK;
+ case ACP_CONFIG_6:
+ case ACP_CONFIG_7:
+ case ACP_CONFIG_12:
+ case ACP_CONFIG_8:
+ case ACP_CONFIG_13:
+ case ACP_CONFIG_14:
+ if (is_dmic_dev && is_sdw_dev) {
+ switch (acp_data->sdw_manager_count) {
+ case 1:
+ acp_data->pdev_config = ACP63_SDW_PDM_DEV_CONFIG;
+ acp_data->pdev_count = ACP63_SDW0_PDM_MODE_DEVS;
+ break;
+ case 2:
+ acp_data->pdev_config = ACP63_SDW_PDM_DEV_CONFIG;
+ acp_data->pdev_count = ACP63_SDW0_SDW1_PDM_MODE_DEVS;
+ break;
+ default:
+ return -EINVAL;
+ }
+ } else if (is_dmic_dev) {
+ acp_data->pdev_config = ACP63_PDM_DEV_CONFIG;
acp_data->pdev_count = ACP63_PDM_MODE_DEVS;
+ } else if (is_sdw_dev) {
+ switch (acp_data->sdw_manager_count) {
+ case 1:
+ acp_data->pdev_config = ACP63_SDW_DEV_CONFIG;
+ acp_data->pdev_count = ACP63_SDW0_MODE_DEVS;
+ break;
+ case 2:
+ acp_data->pdev_config = ACP63_SDW_DEV_CONFIG;
+ acp_data->pdev_count = ACP63_SDW0_SDW1_MODE_DEVS;
+ break;
+ default:
+ return -EINVAL;
+ }
}
break;
+ default:
+ break;
}
+ return 0;
}
static void acp63_fill_platform_dev_info(struct platform_device_info *pdevinfo,
@@ -173,6 +418,7 @@ static void acp63_fill_platform_dev_info(struct platform_device_info *pdevinfo,
static int create_acp63_platform_devs(struct pci_dev *pci, struct acp63_dev_data *adata, u32 addr)
{
+ struct acp_sdw_pdata *sdw_pdata;
struct platform_device_info pdevinfo[ACP63_DEVS];
struct device *parent;
int index;
@@ -180,9 +426,9 @@ static int create_acp63_platform_devs(struct pci_dev *pci, struct acp63_dev_data
parent = &pci->dev;
dev_dbg(&pci->dev,
- "%s pdev_mask:0x%x pdev_count:0x%x\n", __func__, adata->pdev_mask,
+ "%s pdev_config:0x%x pdev_count:0x%x\n", __func__, adata->pdev_config,
adata->pdev_count);
- if (adata->pdev_mask) {
+ if (adata->pdev_config) {
adata->res = devm_kzalloc(&pci->dev, sizeof(struct resource), GFP_KERNEL);
if (!adata->res) {
ret = -ENOMEM;
@@ -194,8 +440,8 @@ static int create_acp63_platform_devs(struct pci_dev *pci, struct acp63_dev_data
memset(&pdevinfo, 0, sizeof(pdevinfo));
}
- switch (adata->pdev_mask) {
- case ACP63_PDM_DEV_MASK:
+ switch (adata->pdev_config) {
+ case ACP63_PDM_DEV_CONFIG:
adata->pdm_dev_index = 0;
acp63_fill_platform_dev_info(&pdevinfo[0], parent, NULL, "acp_ps_pdm_dma",
0, adata->res, 1, NULL, 0);
@@ -204,8 +450,104 @@ static int create_acp63_platform_devs(struct pci_dev *pci, struct acp63_dev_data
acp63_fill_platform_dev_info(&pdevinfo[2], parent, NULL, "acp_ps_mach",
0, NULL, 0, NULL, 0);
break;
+ case ACP63_SDW_DEV_CONFIG:
+ if (adata->pdev_count == ACP63_SDW0_MODE_DEVS) {
+ sdw_pdata = devm_kzalloc(&pci->dev, sizeof(struct acp_sdw_pdata),
+ GFP_KERNEL);
+ if (!sdw_pdata) {
+ ret = -ENOMEM;
+ goto de_init;
+ }
+
+ sdw_pdata->instance = 0;
+ sdw_pdata->acp_sdw_lock = &adata->acp_lock;
+ adata->sdw0_dev_index = 0;
+ adata->sdw_dma_dev_index = 1;
+ acp63_fill_platform_dev_info(&pdevinfo[0], parent, adata->sdw_fw_node,
+ "amd_sdw_manager", 0, adata->res, 1,
+ sdw_pdata, sizeof(struct acp_sdw_pdata));
+ acp63_fill_platform_dev_info(&pdevinfo[1], parent, NULL, "amd_ps_sdw_dma",
+ 0, adata->res, 1, NULL, 0);
+ } else if (adata->pdev_count == ACP63_SDW0_SDW1_MODE_DEVS) {
+ sdw_pdata = devm_kzalloc(&pci->dev, sizeof(struct acp_sdw_pdata) * 2,
+ GFP_KERNEL);
+ if (!sdw_pdata) {
+ ret = -ENOMEM;
+ goto de_init;
+ }
+
+ sdw_pdata[0].instance = 0;
+ sdw_pdata[1].instance = 1;
+ sdw_pdata[0].acp_sdw_lock = &adata->acp_lock;
+ sdw_pdata[1].acp_sdw_lock = &adata->acp_lock;
+ sdw_pdata->acp_sdw_lock = &adata->acp_lock;
+ adata->sdw0_dev_index = 0;
+ adata->sdw1_dev_index = 1;
+ adata->sdw_dma_dev_index = 2;
+ acp63_fill_platform_dev_info(&pdevinfo[0], parent, adata->sdw_fw_node,
+ "amd_sdw_manager", 0, adata->res, 1,
+ &sdw_pdata[0], sizeof(struct acp_sdw_pdata));
+ acp63_fill_platform_dev_info(&pdevinfo[1], parent, adata->sdw_fw_node,
+ "amd_sdw_manager", 1, adata->res, 1,
+ &sdw_pdata[1], sizeof(struct acp_sdw_pdata));
+ acp63_fill_platform_dev_info(&pdevinfo[2], parent, NULL, "amd_ps_sdw_dma",
+ 0, adata->res, 1, NULL, 0);
+ }
+ break;
+ case ACP63_SDW_PDM_DEV_CONFIG:
+ if (adata->pdev_count == ACP63_SDW0_PDM_MODE_DEVS) {
+ sdw_pdata = devm_kzalloc(&pci->dev, sizeof(struct acp_sdw_pdata),
+ GFP_KERNEL);
+ if (!sdw_pdata) {
+ ret = -ENOMEM;
+ goto de_init;
+ }
+
+ sdw_pdata->instance = 0;
+ sdw_pdata->acp_sdw_lock = &adata->acp_lock;
+ adata->pdm_dev_index = 0;
+ adata->sdw0_dev_index = 1;
+ adata->sdw_dma_dev_index = 2;
+ acp63_fill_platform_dev_info(&pdevinfo[0], parent, NULL, "acp_ps_pdm_dma",
+ 0, adata->res, 1, NULL, 0);
+ acp63_fill_platform_dev_info(&pdevinfo[1], parent, adata->sdw_fw_node,
+ "amd_sdw_manager", 0, adata->res, 1,
+ sdw_pdata, sizeof(struct acp_sdw_pdata));
+ acp63_fill_platform_dev_info(&pdevinfo[2], parent, NULL, "amd_ps_sdw_dma",
+ 0, adata->res, 1, NULL, 0);
+ acp63_fill_platform_dev_info(&pdevinfo[3], parent, NULL, "dmic-codec",
+ 0, NULL, 0, NULL, 0);
+ } else if (adata->pdev_count == ACP63_SDW0_SDW1_PDM_MODE_DEVS) {
+ sdw_pdata = devm_kzalloc(&pci->dev, sizeof(struct acp_sdw_pdata) * 2,
+ GFP_KERNEL);
+ if (!sdw_pdata) {
+ ret = -ENOMEM;
+ goto de_init;
+ }
+ sdw_pdata[0].instance = 0;
+ sdw_pdata[1].instance = 1;
+ sdw_pdata[0].acp_sdw_lock = &adata->acp_lock;
+ sdw_pdata[1].acp_sdw_lock = &adata->acp_lock;
+ adata->pdm_dev_index = 0;
+ adata->sdw0_dev_index = 1;
+ adata->sdw1_dev_index = 2;
+ adata->sdw_dma_dev_index = 3;
+ acp63_fill_platform_dev_info(&pdevinfo[0], parent, NULL, "acp_ps_pdm_dma",
+ 0, adata->res, 1, NULL, 0);
+ acp63_fill_platform_dev_info(&pdevinfo[1], parent, adata->sdw_fw_node,
+ "amd_sdw_manager", 0, adata->res, 1,
+ &sdw_pdata[0], sizeof(struct acp_sdw_pdata));
+ acp63_fill_platform_dev_info(&pdevinfo[2], parent, adata->sdw_fw_node,
+ "amd_sdw_manager", 1, adata->res, 1,
+ &sdw_pdata[1], sizeof(struct acp_sdw_pdata));
+ acp63_fill_platform_dev_info(&pdevinfo[3], parent, NULL, "amd_ps_sdw_dma",
+ 0, adata->res, 1, NULL, 0);
+ acp63_fill_platform_dev_info(&pdevinfo[4], parent, NULL, "dmic-codec",
+ 0, NULL, 0, NULL, 0);
+ }
+ break;
default:
- dev_dbg(&pci->dev, "No PDM devices found\n");
+ dev_dbg(&pci->dev, "No PDM or SoundWire manager devices found\n");
return 0;
}
@@ -276,25 +618,38 @@ static int snd_acp63_probe(struct pci_dev *pci,
ret = -ENOMEM;
goto release_regions;
}
+ /*
+ * By default acp_reset flag is set to true. i.e acp_deinit() and acp_init()
+ * will be invoked for all ACP configurations during suspend/resume callbacks.
+ * This flag should be set to false only when SoundWire manager power mode
+ * set to ClockStopMode.
+ */
+ adata->acp_reset = true;
pci_set_master(pci);
pci_set_drvdata(pci, adata);
mutex_init(&adata->acp_lock);
ret = acp63_init(adata->acp63_base, &pci->dev);
if (ret)
goto release_regions;
- ret = devm_request_irq(&pci->dev, pci->irq, acp63_irq_handler,
- irqflags, "ACP_PCI_IRQ", adata);
+ ret = devm_request_threaded_irq(&pci->dev, pci->irq, acp63_irq_handler,
+ acp63_irq_thread, irqflags, "ACP_PCI_IRQ", adata);
if (ret) {
dev_err(&pci->dev, "ACP PCI IRQ request failed\n");
goto de_init;
}
val = readl(adata->acp63_base + ACP_PIN_CONFIG);
- get_acp63_device_config(val, pci, adata);
+ ret = get_acp63_device_config(val, pci, adata);
+ /* ACP PCI driver probe should be continued even PDM or SoundWire Devices are not found */
+ if (ret) {
+ dev_err(&pci->dev, "get acp device config failed:%d\n", ret);
+ goto skip_pdev_creation;
+ }
ret = create_acp63_platform_devs(pci, adata, addr);
if (ret < 0) {
dev_err(&pci->dev, "ACP platform devices creation failed\n");
goto de_init;
}
+skip_pdev_creation:
pm_runtime_set_autosuspend_delay(&pci->dev, ACP_SUSPEND_DELAY_MS);
pm_runtime_use_autosuspend(&pci->dev);
pm_runtime_put_noidle(&pci->dev);
@@ -314,24 +669,28 @@ disable_pci:
static int __maybe_unused snd_acp63_suspend(struct device *dev)
{
struct acp63_dev_data *adata;
- int ret;
+ int ret = 0;
adata = dev_get_drvdata(dev);
- ret = acp63_deinit(adata->acp63_base, dev);
- if (ret)
- dev_err(dev, "ACP de-init failed\n");
+ if (adata->acp_reset) {
+ ret = acp63_deinit(adata->acp63_base, dev);
+ if (ret)
+ dev_err(dev, "ACP de-init failed\n");
+ }
return ret;
}
static int __maybe_unused snd_acp63_resume(struct device *dev)
{
struct acp63_dev_data *adata;
- int ret;
+ int ret = 0;
adata = dev_get_drvdata(dev);
- ret = acp63_init(adata->acp63_base, dev);
- if (ret)
- dev_err(dev, "ACP init failed\n");
+ if (adata->acp_reset) {
+ ret = acp63_init(adata->acp63_base, dev);
+ if (ret)
+ dev_err(dev, "ACP init failed\n");
+ }
return ret;
}
diff --git a/sound/soc/amd/ps/ps-sdw-dma.c b/sound/soc/amd/ps/ps-sdw-dma.c
new file mode 100644
index 000000000000..ade130a8062a
--- /dev/null
+++ b/sound/soc/amd/ps/ps-sdw-dma.c
@@ -0,0 +1,555 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * AMD ALSA SoC Pink Sardine SoundWire DMA Driver
+ *
+ * Copyright 2023 Advanced Micro Devices, Inc.
+ */
+
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <linux/pm_runtime.h>
+#include <linux/soundwire/sdw_amd.h>
+#include "acp63.h"
+
+#define DRV_NAME "amd_ps_sdw_dma"
+
+static struct sdw_dma_ring_buf_reg sdw0_dma_ring_buf_reg[ACP63_SDW0_DMA_MAX_STREAMS] = {
+ {ACP_AUDIO0_TX_DMA_SIZE, ACP_AUDIO0_TX_FIFOADDR, ACP_AUDIO0_TX_FIFOSIZE,
+ ACP_AUDIO0_TX_RINGBUFSIZE, ACP_AUDIO0_TX_RINGBUFADDR, ACP_AUDIO0_TX_INTR_WATERMARK_SIZE,
+ ACP_AUDIO0_TX_LINEARPOSITIONCNTR_LOW, ACP_AUDIO0_TX_LINEARPOSITIONCNTR_HIGH},
+ {ACP_AUDIO1_TX_DMA_SIZE, ACP_AUDIO1_TX_FIFOADDR, ACP_AUDIO1_TX_FIFOSIZE,
+ ACP_AUDIO1_TX_RINGBUFSIZE, ACP_AUDIO1_TX_RINGBUFADDR, ACP_AUDIO1_TX_INTR_WATERMARK_SIZE,
+ ACP_AUDIO1_TX_LINEARPOSITIONCNTR_LOW, ACP_AUDIO1_TX_LINEARPOSITIONCNTR_HIGH},
+ {ACP_AUDIO2_TX_DMA_SIZE, ACP_AUDIO2_TX_FIFOADDR, ACP_AUDIO2_TX_FIFOSIZE,
+ ACP_AUDIO2_TX_RINGBUFSIZE, ACP_AUDIO2_TX_RINGBUFADDR, ACP_AUDIO2_TX_INTR_WATERMARK_SIZE,
+ ACP_AUDIO2_TX_LINEARPOSITIONCNTR_LOW, ACP_AUDIO2_TX_LINEARPOSITIONCNTR_HIGH},
+ {ACP_AUDIO0_RX_DMA_SIZE, ACP_AUDIO0_RX_FIFOADDR, ACP_AUDIO0_RX_FIFOSIZE,
+ ACP_AUDIO0_RX_RINGBUFSIZE, ACP_AUDIO0_RX_RINGBUFADDR, ACP_AUDIO0_RX_INTR_WATERMARK_SIZE,
+ ACP_AUDIO0_TX_LINEARPOSITIONCNTR_LOW, ACP_AUDIO0_TX_LINEARPOSITIONCNTR_HIGH},
+ {ACP_AUDIO1_RX_DMA_SIZE, ACP_AUDIO1_RX_FIFOADDR, ACP_AUDIO1_RX_FIFOSIZE,
+ ACP_AUDIO1_RX_RINGBUFSIZE, ACP_AUDIO1_RX_RINGBUFADDR, ACP_AUDIO1_RX_INTR_WATERMARK_SIZE,
+ ACP_AUDIO1_RX_LINEARPOSITIONCNTR_LOW, ACP_AUDIO1_RX_LINEARPOSITIONCNTR_HIGH},
+ {ACP_AUDIO2_RX_DMA_SIZE, ACP_AUDIO2_RX_FIFOADDR, ACP_AUDIO2_RX_FIFOSIZE,
+ ACP_AUDIO2_RX_RINGBUFSIZE, ACP_AUDIO2_RX_RINGBUFADDR, ACP_AUDIO2_RX_INTR_WATERMARK_SIZE,
+ ACP_AUDIO2_RX_LINEARPOSITIONCNTR_LOW, ACP_AUDIO2_RX_LINEARPOSITIONCNTR_HIGH}
+};
+
+static struct sdw_dma_ring_buf_reg sdw1_dma_ring_buf_reg[ACP63_SDW1_DMA_MAX_STREAMS] = {
+ {ACP_P1_AUDIO1_TX_DMA_SIZE, ACP_P1_AUDIO1_TX_FIFOADDR, ACP_P1_AUDIO1_TX_FIFOSIZE,
+ ACP_P1_AUDIO1_TX_RINGBUFSIZE, ACP_P1_AUDIO1_TX_RINGBUFADDR,
+ ACP_P1_AUDIO1_TX_INTR_WATERMARK_SIZE,
+ ACP_P1_AUDIO1_TX_LINEARPOSITIONCNTR_LOW, ACP_P1_AUDIO1_TX_LINEARPOSITIONCNTR_HIGH},
+ {ACP_P1_AUDIO1_RX_DMA_SIZE, ACP_P1_AUDIO1_RX_FIFOADDR, ACP_P1_AUDIO1_RX_FIFOSIZE,
+ ACP_P1_AUDIO1_RX_RINGBUFSIZE, ACP_P1_AUDIO1_RX_RINGBUFADDR,
+ ACP_P1_AUDIO1_RX_INTR_WATERMARK_SIZE,
+ ACP_P1_AUDIO1_RX_LINEARPOSITIONCNTR_LOW, ACP_P1_AUDIO1_RX_LINEARPOSITIONCNTR_HIGH},
+};
+
+static u32 sdw0_dma_enable_reg[ACP63_SDW0_DMA_MAX_STREAMS] = {
+ ACP_SW0_AUDIO0_TX_EN,
+ ACP_SW0_AUDIO1_TX_EN,
+ ACP_SW0_AUDIO2_TX_EN,
+ ACP_SW0_AUDIO0_RX_EN,
+ ACP_SW0_AUDIO1_RX_EN,
+ ACP_SW0_AUDIO2_RX_EN,
+};
+
+static u32 sdw1_dma_enable_reg[ACP63_SDW1_DMA_MAX_STREAMS] = {
+ ACP_SW1_AUDIO1_TX_EN,
+ ACP_SW1_AUDIO1_RX_EN,
+};
+
+static const struct snd_pcm_hardware acp63_sdw_hardware_playback = {
+ .info = SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE,
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .buffer_bytes_max = SDW_PLAYBACK_MAX_NUM_PERIODS * SDW_PLAYBACK_MAX_PERIOD_SIZE,
+ .period_bytes_min = SDW_PLAYBACK_MIN_PERIOD_SIZE,
+ .period_bytes_max = SDW_PLAYBACK_MAX_PERIOD_SIZE,
+ .periods_min = SDW_PLAYBACK_MIN_NUM_PERIODS,
+ .periods_max = SDW_PLAYBACK_MAX_NUM_PERIODS,
+};
+
+static const struct snd_pcm_hardware acp63_sdw_hardware_capture = {
+ .info = SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE,
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .buffer_bytes_max = SDW_CAPTURE_MAX_NUM_PERIODS * SDW_CAPTURE_MAX_PERIOD_SIZE,
+ .period_bytes_min = SDW_CAPTURE_MIN_PERIOD_SIZE,
+ .period_bytes_max = SDW_CAPTURE_MAX_PERIOD_SIZE,
+ .periods_min = SDW_CAPTURE_MIN_NUM_PERIODS,
+ .periods_max = SDW_CAPTURE_MAX_NUM_PERIODS,
+};
+
+static void acp63_enable_disable_sdw_dma_interrupts(void __iomem *acp_base, bool enable)
+{
+ u32 ext_intr_cntl, ext_intr_cntl1;
+ u32 irq_mask = ACP_SDW_DMA_IRQ_MASK;
+ u32 irq_mask1 = ACP_P1_SDW_DMA_IRQ_MASK;
+
+ if (enable) {
+ ext_intr_cntl = readl(acp_base + ACP_EXTERNAL_INTR_CNTL);
+ ext_intr_cntl |= irq_mask;
+ writel(ext_intr_cntl, acp_base + ACP_EXTERNAL_INTR_CNTL);
+ ext_intr_cntl1 = readl(acp_base + ACP_EXTERNAL_INTR_CNTL1);
+ ext_intr_cntl1 |= irq_mask1;
+ writel(ext_intr_cntl1, acp_base + ACP_EXTERNAL_INTR_CNTL1);
+ } else {
+ ext_intr_cntl = readl(acp_base + ACP_EXTERNAL_INTR_CNTL);
+ ext_intr_cntl &= ~irq_mask;
+ writel(ext_intr_cntl, acp_base + ACP_EXTERNAL_INTR_CNTL);
+ ext_intr_cntl1 = readl(acp_base + ACP_EXTERNAL_INTR_CNTL1);
+ ext_intr_cntl1 &= ~irq_mask1;
+ writel(ext_intr_cntl1, acp_base + ACP_EXTERNAL_INTR_CNTL1);
+ }
+}
+
+static void acp63_config_dma(struct acp_sdw_dma_stream *stream, void __iomem *acp_base,
+ u32 stream_id)
+{
+ u16 page_idx;
+ u32 low, high, val;
+ u32 sdw_dma_pte_offset;
+ dma_addr_t addr;
+
+ addr = stream->dma_addr;
+ sdw_dma_pte_offset = SDW_PTE_OFFSET(stream->instance);
+ val = sdw_dma_pte_offset + (stream_id * ACP_SDW_PTE_OFFSET);
+
+ /* Group Enable */
+ writel(ACP_SDW_SRAM_PTE_OFFSET | BIT(31), acp_base + ACPAXI2AXI_ATU_BASE_ADDR_GRP_2);
+ writel(PAGE_SIZE_4K_ENABLE, acp_base + ACPAXI2AXI_ATU_PAGE_SIZE_GRP_2);
+ for (page_idx = 0; page_idx < stream->num_pages; page_idx++) {
+ /* Load the low address of page int ACP SRAM through SRBM */
+ low = lower_32_bits(addr);
+ high = upper_32_bits(addr);
+
+ writel(low, acp_base + ACP_SCRATCH_REG_0 + val);
+ high |= BIT(31);
+ writel(high, acp_base + ACP_SCRATCH_REG_0 + val + 4);
+ val += 8;
+ addr += PAGE_SIZE;
+ }
+ writel(0x1, acp_base + ACPAXI2AXI_ATU_CTRL);
+}
+
+static int acp63_configure_sdw_ringbuffer(void __iomem *acp_base, u32 stream_id, u32 size,
+ u32 manager_instance)
+{
+ u32 reg_dma_size;
+ u32 reg_fifo_addr;
+ u32 reg_fifo_size;
+ u32 reg_ring_buf_size;
+ u32 reg_ring_buf_addr;
+ u32 sdw_fifo_addr;
+ u32 sdw_fifo_offset;
+ u32 sdw_ring_buf_addr;
+ u32 sdw_ring_buf_size;
+ u32 sdw_mem_window_offset;
+
+ switch (manager_instance) {
+ case ACP_SDW0:
+ reg_dma_size = sdw0_dma_ring_buf_reg[stream_id].reg_dma_size;
+ reg_fifo_addr = sdw0_dma_ring_buf_reg[stream_id].reg_fifo_addr;
+ reg_fifo_size = sdw0_dma_ring_buf_reg[stream_id].reg_fifo_size;
+ reg_ring_buf_size = sdw0_dma_ring_buf_reg[stream_id].reg_ring_buf_size;
+ reg_ring_buf_addr = sdw0_dma_ring_buf_reg[stream_id].reg_ring_buf_addr;
+ break;
+ case ACP_SDW1:
+ reg_dma_size = sdw1_dma_ring_buf_reg[stream_id].reg_dma_size;
+ reg_fifo_addr = sdw1_dma_ring_buf_reg[stream_id].reg_fifo_addr;
+ reg_fifo_size = sdw1_dma_ring_buf_reg[stream_id].reg_fifo_size;
+ reg_ring_buf_size = sdw1_dma_ring_buf_reg[stream_id].reg_ring_buf_size;
+ reg_ring_buf_addr = sdw1_dma_ring_buf_reg[stream_id].reg_ring_buf_addr;
+ break;
+ default:
+ return -EINVAL;
+ }
+ sdw_fifo_offset = ACP_SDW_FIFO_OFFSET(manager_instance);
+ sdw_mem_window_offset = SDW_MEM_WINDOW_START(manager_instance);
+ sdw_fifo_addr = sdw_fifo_offset + (stream_id * SDW_FIFO_OFFSET);
+ sdw_ring_buf_addr = sdw_mem_window_offset + (stream_id * ACP_SDW_RING_BUFF_ADDR_OFFSET);
+ sdw_ring_buf_size = size;
+ writel(sdw_ring_buf_size, acp_base + reg_ring_buf_size);
+ writel(sdw_ring_buf_addr, acp_base + reg_ring_buf_addr);
+ writel(sdw_fifo_addr, acp_base + reg_fifo_addr);
+ writel(SDW_DMA_SIZE, acp_base + reg_dma_size);
+ writel(SDW_FIFO_SIZE, acp_base + reg_fifo_size);
+ return 0;
+}
+
+static int acp63_sdw_dma_open(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime;
+ struct acp_sdw_dma_stream *stream;
+ struct snd_soc_dai *cpu_dai;
+ struct amd_sdw_manager *amd_manager;
+ struct snd_soc_pcm_runtime *prtd = substream->private_data;
+ int ret;
+
+ runtime = substream->runtime;
+ cpu_dai = asoc_rtd_to_cpu(prtd, 0);
+ amd_manager = snd_soc_dai_get_drvdata(cpu_dai);
+ stream = kzalloc(sizeof(*stream), GFP_KERNEL);
+ if (!stream)
+ return -ENOMEM;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ runtime->hw = acp63_sdw_hardware_playback;
+ else
+ runtime->hw = acp63_sdw_hardware_capture;
+ ret = snd_pcm_hw_constraint_integer(runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS);
+ if (ret < 0) {
+ dev_err(component->dev, "set integer constraint failed\n");
+ kfree(stream);
+ return ret;
+ }
+
+ stream->stream_id = cpu_dai->id;
+ stream->instance = amd_manager->instance;
+ runtime->private_data = stream;
+ return ret;
+}
+
+static int acp63_sdw_dma_hw_params(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct acp_sdw_dma_stream *stream;
+ struct sdw_dma_dev_data *sdw_data;
+ u32 period_bytes;
+ u32 water_mark_size_reg;
+ u32 irq_mask, ext_intr_ctrl;
+ u64 size;
+ u32 stream_id;
+ u32 acp_ext_intr_cntl_reg;
+ int ret;
+
+ sdw_data = dev_get_drvdata(component->dev);
+ stream = substream->runtime->private_data;
+ if (!stream)
+ return -EINVAL;
+ stream_id = stream->stream_id;
+ switch (stream->instance) {
+ case ACP_SDW0:
+ sdw_data->sdw0_dma_stream[stream_id] = substream;
+ water_mark_size_reg = sdw0_dma_ring_buf_reg[stream_id].water_mark_size_reg;
+ acp_ext_intr_cntl_reg = ACP_EXTERNAL_INTR_CNTL;
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ irq_mask = BIT(SDW0_DMA_TX_IRQ_MASK(stream_id));
+ else
+ irq_mask = BIT(SDW0_DMA_RX_IRQ_MASK(stream_id));
+ break;
+ case ACP_SDW1:
+ sdw_data->sdw1_dma_stream[stream_id] = substream;
+ acp_ext_intr_cntl_reg = ACP_EXTERNAL_INTR_CNTL1;
+ water_mark_size_reg = sdw1_dma_ring_buf_reg[stream_id].water_mark_size_reg;
+ irq_mask = BIT(SDW1_DMA_IRQ_MASK(stream_id));
+ break;
+ default:
+ return -EINVAL;
+ }
+ size = params_buffer_bytes(params);
+ period_bytes = params_period_bytes(params);
+ stream->dma_addr = substream->runtime->dma_addr;
+ stream->num_pages = (PAGE_ALIGN(size) >> PAGE_SHIFT);
+ acp63_config_dma(stream, sdw_data->acp_base, stream_id);
+ ret = acp63_configure_sdw_ringbuffer(sdw_data->acp_base, stream_id, size,
+ stream->instance);
+ if (ret) {
+ dev_err(component->dev, "Invalid DMA channel\n");
+ return -EINVAL;
+ }
+ ext_intr_ctrl = readl(sdw_data->acp_base + acp_ext_intr_cntl_reg);
+ ext_intr_ctrl |= irq_mask;
+ writel(ext_intr_ctrl, sdw_data->acp_base + acp_ext_intr_cntl_reg);
+ writel(period_bytes, sdw_data->acp_base + water_mark_size_reg);
+ return 0;
+}
+
+static u64 acp63_sdw_get_byte_count(struct acp_sdw_dma_stream *stream, void __iomem *acp_base)
+{
+ union acp_sdw_dma_count byte_count;
+ u32 pos_low_reg, pos_high_reg;
+
+ byte_count.bytescount = 0;
+ switch (stream->instance) {
+ case ACP_SDW0:
+ pos_low_reg = sdw0_dma_ring_buf_reg[stream->stream_id].pos_low_reg;
+ pos_high_reg = sdw0_dma_ring_buf_reg[stream->stream_id].pos_high_reg;
+ break;
+ case ACP_SDW1:
+ pos_low_reg = sdw1_dma_ring_buf_reg[stream->stream_id].pos_low_reg;
+ pos_high_reg = sdw1_dma_ring_buf_reg[stream->stream_id].pos_high_reg;
+ break;
+ default:
+ return -EINVAL;
+ }
+ if (pos_low_reg) {
+ byte_count.bcount.high = readl(acp_base + pos_high_reg);
+ byte_count.bcount.low = readl(acp_base + pos_low_reg);
+ }
+ return byte_count.bytescount;
+}
+
+static snd_pcm_uframes_t acp63_sdw_dma_pointer(struct snd_soc_component *comp,
+ struct snd_pcm_substream *substream)
+{
+ struct sdw_dma_dev_data *sdw_data;
+ struct acp_sdw_dma_stream *stream;
+ u32 pos, buffersize;
+ u64 bytescount;
+
+ sdw_data = dev_get_drvdata(comp->dev);
+ stream = substream->runtime->private_data;
+ buffersize = frames_to_bytes(substream->runtime,
+ substream->runtime->buffer_size);
+ bytescount = acp63_sdw_get_byte_count(stream, sdw_data->acp_base);
+ if (bytescount > stream->bytescount)
+ bytescount -= stream->bytescount;
+ pos = do_div(bytescount, buffersize);
+ return bytes_to_frames(substream->runtime, pos);
+}
+
+static int acp63_sdw_dma_new(struct snd_soc_component *component,
+ struct snd_soc_pcm_runtime *rtd)
+{
+ struct device *parent = component->dev->parent;
+
+ snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,
+ parent, SDW_MIN_BUFFER, SDW_MAX_BUFFER);
+ return 0;
+}
+
+static int acp63_sdw_dma_close(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct sdw_dma_dev_data *sdw_data;
+ struct acp_sdw_dma_stream *stream;
+
+ sdw_data = dev_get_drvdata(component->dev);
+ stream = substream->runtime->private_data;
+ if (!stream)
+ return -EINVAL;
+ switch (stream->instance) {
+ case ACP_SDW0:
+ sdw_data->sdw0_dma_stream[stream->stream_id] = NULL;
+ break;
+ case ACP_SDW1:
+ sdw_data->sdw1_dma_stream[stream->stream_id] = NULL;
+ break;
+ default:
+ return -EINVAL;
+ }
+ kfree(stream);
+ return 0;
+}
+
+static int acp63_sdw_dma_enable(struct snd_pcm_substream *substream,
+ void __iomem *acp_base, bool sdw_dma_enable)
+{
+ struct acp_sdw_dma_stream *stream;
+ u32 stream_id;
+ u32 sdw_dma_en_reg;
+ u32 sdw_dma_en_stat_reg;
+ u32 sdw_dma_stat;
+ u32 dma_enable;
+
+ stream = substream->runtime->private_data;
+ stream_id = stream->stream_id;
+ switch (stream->instance) {
+ case ACP_SDW0:
+ sdw_dma_en_reg = sdw0_dma_enable_reg[stream_id];
+ break;
+ case ACP_SDW1:
+ sdw_dma_en_reg = sdw1_dma_enable_reg[stream_id];
+ break;
+ default:
+ return -EINVAL;
+ }
+ sdw_dma_en_stat_reg = sdw_dma_en_reg + 4;
+ dma_enable = sdw_dma_enable;
+ writel(dma_enable, acp_base + sdw_dma_en_reg);
+ return readl_poll_timeout(acp_base + sdw_dma_en_stat_reg, sdw_dma_stat,
+ (sdw_dma_stat == dma_enable), ACP_DELAY_US, ACP_COUNTER);
+}
+
+static int acp63_sdw_dma_trigger(struct snd_soc_component *comp,
+ struct snd_pcm_substream *substream,
+ int cmd)
+{
+ struct sdw_dma_dev_data *sdw_data;
+ int ret;
+
+ sdw_data = dev_get_drvdata(comp->dev);
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ ret = acp63_sdw_dma_enable(substream, sdw_data->acp_base, true);
+ break;
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_STOP:
+ ret = acp63_sdw_dma_enable(substream, sdw_data->acp_base, false);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ if (ret)
+ dev_err(comp->dev, "trigger %d failed: %d", cmd, ret);
+ return ret;
+}
+
+static const struct snd_soc_component_driver acp63_sdw_component = {
+ .name = DRV_NAME,
+ .open = acp63_sdw_dma_open,
+ .close = acp63_sdw_dma_close,
+ .hw_params = acp63_sdw_dma_hw_params,
+ .trigger = acp63_sdw_dma_trigger,
+ .pointer = acp63_sdw_dma_pointer,
+ .pcm_construct = acp63_sdw_dma_new,
+};
+
+static int acp63_sdw_platform_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct sdw_dma_dev_data *sdw_data;
+ struct acp63_dev_data *acp_data;
+ struct device *parent;
+ int status;
+
+ parent = pdev->dev.parent;
+ acp_data = dev_get_drvdata(parent);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
+ return -ENODEV;
+ }
+
+ sdw_data = devm_kzalloc(&pdev->dev, sizeof(*sdw_data), GFP_KERNEL);
+ if (!sdw_data)
+ return -ENOMEM;
+
+ sdw_data->acp_base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+ if (!sdw_data->acp_base)
+ return -ENOMEM;
+
+ sdw_data->acp_lock = &acp_data->acp_lock;
+ dev_set_drvdata(&pdev->dev, sdw_data);
+ status = devm_snd_soc_register_component(&pdev->dev,
+ &acp63_sdw_component,
+ NULL, 0);
+ if (status) {
+ dev_err(&pdev->dev, "Fail to register sdw dma component\n");
+ return status;
+ }
+ pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS);
+ pm_runtime_use_autosuspend(&pdev->dev);
+ pm_runtime_mark_last_busy(&pdev->dev);
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+ return 0;
+}
+
+static int acp63_sdw_platform_remove(struct platform_device *pdev)
+{
+ pm_runtime_disable(&pdev->dev);
+ return 0;
+}
+
+static int acp_restore_sdw_dma_config(struct sdw_dma_dev_data *sdw_data)
+{
+ struct acp_sdw_dma_stream *stream;
+ struct snd_pcm_substream *substream;
+ struct snd_pcm_runtime *runtime;
+ u32 period_bytes, buf_size, water_mark_size_reg;
+ u32 stream_count;
+ int index, instance, ret;
+
+ for (instance = 0; instance < AMD_SDW_MAX_MANAGERS; instance++) {
+ if (instance == ACP_SDW0)
+ stream_count = ACP63_SDW0_DMA_MAX_STREAMS;
+ else
+ stream_count = ACP63_SDW1_DMA_MAX_STREAMS;
+
+ for (index = 0; index < stream_count; index++) {
+ if (instance == ACP_SDW0) {
+ substream = sdw_data->sdw0_dma_stream[index];
+ water_mark_size_reg =
+ sdw0_dma_ring_buf_reg[index].water_mark_size_reg;
+ } else {
+ substream = sdw_data->sdw1_dma_stream[index];
+ water_mark_size_reg =
+ sdw1_dma_ring_buf_reg[index].water_mark_size_reg;
+ }
+
+ if (substream && substream->runtime) {
+ runtime = substream->runtime;
+ stream = runtime->private_data;
+ period_bytes = frames_to_bytes(runtime, runtime->period_size);
+ buf_size = frames_to_bytes(runtime, runtime->buffer_size);
+ acp63_config_dma(stream, sdw_data->acp_base, index);
+ ret = acp63_configure_sdw_ringbuffer(sdw_data->acp_base, index,
+ buf_size, instance);
+ if (ret)
+ return ret;
+ writel(period_bytes, sdw_data->acp_base + water_mark_size_reg);
+ }
+ }
+ }
+ acp63_enable_disable_sdw_dma_interrupts(sdw_data->acp_base, true);
+ return 0;
+}
+
+static int __maybe_unused acp63_sdw_pcm_resume(struct device *dev)
+{
+ struct sdw_dma_dev_data *sdw_data;
+
+ sdw_data = dev_get_drvdata(dev);
+ return acp_restore_sdw_dma_config(sdw_data);
+}
+
+static const struct dev_pm_ops acp63_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(NULL, acp63_sdw_pcm_resume)
+};
+
+static struct platform_driver acp63_sdw_dma_driver = {
+ .probe = acp63_sdw_platform_probe,
+ .remove = acp63_sdw_platform_remove,
+ .driver = {
+ .name = "amd_ps_sdw_dma",
+ .pm = &acp63_pm_ops,
+ },
+};
+
+module_platform_driver(acp63_sdw_dma_driver);
+
+MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
+MODULE_DESCRIPTION("AMD ACP6.3 PS SDW DMA Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);