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Message-ID: <20231221073558.3181911-7-Vijendar.Mukunda@amd.com>
Date: Thu, 21 Dec 2023 13:05:52 +0530
From: Vijendar Mukunda <Vijendar.Mukunda@....com>
To: <broonie@...nel.org>, <vkoul@...nel.org>
CC: <alsa-devel@...a-project.org>, <Basavaraj.Hiregoudar@....com>,
<Sunil-kumar.Dommati@....com>, <pierre-louis.bossart@...ux.intel.com>,
<vinod.koul@...el.com>, <venkataprasad.potturu@....com>, Vijendar Mukunda
<Vijendar.Mukunda@....com>, Liam Girdwood <lgirdwood@...il.com>, "Peter
Ujfalusi" <peter.ujfalusi@...ux.intel.com>, Bard Liao
<yung-chuan.liao@...ux.intel.com>, Ranjani Sridharan
<ranjani.sridharan@...ux.intel.com>, Daniel Baluta <daniel.baluta@....com>,
Kai Vehmanen <kai.vehmanen@...ux.intel.com>, Jaroslav Kysela
<perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, V sujith kumar Reddy
<Vsujithkumar.Reddy@....com>, Mastan Katragadda <Mastan.Katragadda@....com>,
Rander Wang <rander.wang@...el.com>, "moderated list:SOUND - SOUND OPEN
FIRMWARE (SOF) DRIVERS" <sound-open-firmware@...a-project.org>, "open
list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..."
<linux-sound@...r.kernel.org>, open list <linux-kernel@...r.kernel.org>
Subject: [PATCH 06/12] ASoC: SOF: amd: add code for invoking soundwire manager helper functions
Add code for invoking Soundwire manager helper functions
when SoundWire configuration is selected.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
---
sound/soc/sof/amd/Kconfig | 17 +++++++
sound/soc/sof/amd/acp.c | 99 ++++++++++++++++++++++++++++++++++++++-
sound/soc/sof/amd/acp.h | 15 +++++-
3 files changed, 129 insertions(+), 2 deletions(-)
diff --git a/sound/soc/sof/amd/Kconfig b/sound/soc/sof/amd/Kconfig
index 19c5e27a193f..1cea1d75130c 100644
--- a/sound/soc/sof/amd/Kconfig
+++ b/sound/soc/sof/amd/Kconfig
@@ -60,6 +60,23 @@ config SND_SOC_SOF_ACP_PROBES
This option is not user-selectable but automatically handled by
'select' statements at a higher level
+config SND_SOC_SOF_AMD_SOUNDWIRE_LINK_BASELINE
+ tristate
+ select SOUNDWIRE_AMD if SND_SOC_SOF_AMD_SOUNDWIRE != n
+ select SND_AMD_SOUNDWIRE_ACPI if ACPI
+
+config SND_SOC_SOF_AMD_SOUNDWIRE
+ tristate "SOF support for SoundWire based AMD platforms"
+ default SND_SOC_SOF_AMD_SOUNDWIRE_LINK_BASELINE
+ depends on SND_SOC_SOF_AMD_SOUNDWIRE_LINK_BASELINE
+ depends on ACPI && SOUNDWIRE
+ depends on !(SOUNDWIRE=m && SND_SOC_SOF_AMD_SOUNDWIRE_LINK_BASELINE=y)
+ help
+ This adds support for SoundWire with Sound Open Firmware
+ for AMD platforms.
+ Say Y if you want to enable SoundWire links with SOF.
+ If unsure select "N".
+
config SND_SOC_SOF_AMD_ACP63
tristate "SOF support for ACP6.3 platform"
depends on SND_SOC_SOF_PCI
diff --git a/sound/soc/sof/amd/acp.c b/sound/soc/sof/amd/acp.c
index 32a741fcb84f..f24cd6b7490f 100644
--- a/sound/soc/sof/amd/acp.c
+++ b/sound/soc/sof/amd/acp.c
@@ -491,6 +491,81 @@ int amd_sof_acp_resume(struct snd_sof_dev *sdev)
}
EXPORT_SYMBOL_NS(amd_sof_acp_resume, SND_SOC_SOF_AMD_COMMON);
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_AMD_SOUNDWIRE)
+static int acp_sof_scan_sdw_devices(struct snd_sof_dev *sdev, u64 addr)
+{
+ struct acpi_device *sdw_dev;
+ struct acp_dev_data *acp_data;
+ const struct sof_amd_acp_desc *desc = get_chip_info(sdev->pdata);
+
+ if (!addr)
+ return -ENODEV;
+
+ acp_data = sdev->pdata->hw_pdata;
+ sdw_dev = acpi_find_child_device(ACPI_COMPANION(sdev->dev), addr, 0);
+ if (!sdw_dev)
+ return -ENODEV;
+
+ acp_data->info.handle = sdw_dev->handle;
+ acp_data->info.count = desc->sdw_max_link_count;
+
+ return amd_sdw_scan_controller(&acp_data->info);
+}
+
+static int amd_sof_sdw_probe(struct snd_sof_dev *sdev)
+{
+ struct acp_dev_data *acp_data;
+ struct sdw_amd_res sdw_res;
+ int ret;
+
+ acp_data = sdev->pdata->hw_pdata;
+
+ memset(&sdw_res, 0, sizeof(sdw_res));
+ sdw_res.addr = acp_data->addr;
+ sdw_res.reg_range = acp_data->reg_range;
+ sdw_res.handle = acp_data->info.handle;
+ sdw_res.parent = sdev->dev;
+ sdw_res.dev = sdev->dev;
+ sdw_res.acp_lock = &acp_data->acp_lock;
+ sdw_res.count = acp_data->info.count;
+ sdw_res.link_mask = acp_data->info.link_mask;
+ sdw_res.mmio_base = sdev->bar[ACP_DSP_BAR];
+
+ ret = sdw_amd_probe(&sdw_res, &acp_data->sdw);
+ if (ret)
+ dev_err(sdev->dev, "SoundWire probe failed\n");
+ return ret;
+}
+
+static int amd_sof_sdw_exit(struct snd_sof_dev *sdev)
+{
+ struct acp_dev_data *acp_data;
+
+ acp_data = sdev->pdata->hw_pdata;
+ if (acp_data->sdw)
+ sdw_amd_exit(acp_data->sdw);
+ acp_data->sdw = NULL;
+
+ return 0;
+}
+
+#else
+static int acp_sof_scan_sdw_devices(struct snd_sof_dev *sdev, u64 addr)
+{
+ return 0;
+}
+
+static int amd_sof_sdw_probe(struct snd_sof_dev *sdev)
+{
+ return 0;
+}
+
+static int amd_sof_sdw_exit(struct snd_sof_dev *sdev)
+{
+ return 0;
+}
+#endif
+
int amd_sof_acp_probe(struct snd_sof_dev *sdev)
{
struct pci_dev *pci = to_pci_dev(sdev->dev);
@@ -527,7 +602,9 @@ int amd_sof_acp_probe(struct snd_sof_dev *sdev)
}
pci_set_master(pci);
-
+ adata->addr = addr;
+ adata->reg_range = chip->reg_end_addr - chip->reg_start_addr;
+ mutex_init(&adata->acp_lock);
sdev->pdata->hw_pdata = adata;
adata->smn_dev = pci_get_device(PCI_VENDOR_ID_AMD, chip->host_bridge_id, NULL);
if (!adata->smn_dev) {
@@ -549,6 +626,21 @@ int amd_sof_acp_probe(struct snd_sof_dev *sdev)
if (ret < 0)
goto free_ipc_irq;
+ /* scan SoundWire capabilities exposed by DSDT */
+ ret = acp_sof_scan_sdw_devices(sdev, chip->sdw_acpi_dev_addr);
+ if (ret < 0) {
+ dev_dbg(sdev->dev, "skipping SoundWire, not detected with ACPI scan\n");
+ goto skip_soundwire;
+ }
+ ret = amd_sof_sdw_probe(sdev);
+ if (ret < 0) {
+ dev_err(sdev->dev, "error: SoundWire probe error\n");
+ free_irq(sdev->ipc_irq, sdev);
+ pci_dev_put(adata->smn_dev);
+ return ret;
+ }
+
+skip_soundwire:
sdev->dsp_box.offset = 0;
sdev->dsp_box.size = BOX_SIZE_512;
@@ -596,6 +688,9 @@ void amd_sof_acp_remove(struct snd_sof_dev *sdev)
if (adata->smn_dev)
pci_dev_put(adata->smn_dev);
+ if (adata->sdw)
+ amd_sof_sdw_exit(sdev);
+
if (sdev->ipc_irq)
free_irq(sdev->ipc_irq, sdev);
@@ -607,4 +702,6 @@ void amd_sof_acp_remove(struct snd_sof_dev *sdev)
EXPORT_SYMBOL_NS(amd_sof_acp_remove, SND_SOC_SOF_AMD_COMMON);
MODULE_DESCRIPTION("AMD ACP sof driver");
+MODULE_IMPORT_NS(SOUNDWIRE_AMD_INIT);
+MODULE_IMPORT_NS(SND_AMD_SOUNDWIRE_ACPI);
MODULE_LICENSE("Dual BSD/GPL");
diff --git a/sound/soc/sof/amd/acp.h b/sound/soc/sof/amd/acp.h
index c645aee216fd..e88d01330ec7 100644
--- a/sound/soc/sof/amd/acp.h
+++ b/sound/soc/sof/amd/acp.h
@@ -12,7 +12,7 @@
#define __SOF_AMD_ACP_H
#include <linux/dmi.h>
-
+#include <linux/soundwire/sdw_amd.h>
#include "../sof-priv.h"
#include "../sof-audio.h"
@@ -191,6 +191,10 @@ struct sof_amd_acp_desc {
u32 acp_clkmux_sel;
u32 fusion_dsp_offset;
u32 probe_reg_offset;
+ u32 reg_start_addr;
+ u32 reg_end_addr;
+ u32 sdw_max_link_count;
+ u64 sdw_acpi_dev_addr;
};
/* Common device data struct for ACP devices */
@@ -199,6 +203,12 @@ struct acp_dev_data {
const struct firmware *fw_dbin;
/* DMIC device */
struct platform_device *dmic_dev;
+ /* mutex lock to protect ACP common registers access */
+ struct mutex acp_lock;
+ /* ACPI information stored between scan and probe steps */
+ struct sdw_amd_acpi_info info;
+ /* sdw context allocated by SoundWire driver */
+ struct sdw_amd_ctx *sdw;
unsigned int fw_bin_size;
unsigned int fw_data_bin_size;
unsigned int fw_sram_data_bin_size;
@@ -207,6 +217,9 @@ struct acp_dev_data {
const char *fw_sram_data_bin;
u32 fw_bin_page_count;
u32 fw_data_bin_page_count;
+ u32 addr;
+ u32 reg_range;
+ u32 blk_type;
dma_addr_t sha_dma_addr;
u8 *bin_buf;
dma_addr_t dma_addr;
--
2.34.1
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