linux-kernel - [PATCH V3 15/25] ASoC: amd: ps: implement function to restore dma config for ACP7.0 platform

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250207062819.1527184-16-Vijendar.Mukunda@amd.com>
Date: Fri, 7 Feb 2025 11:58:09 +0530
From: Vijendar Mukunda <Vijendar.Mukunda@....com>
To: <broonie@...nel.org>, <alsa-devel@...a-project.org>
CC: <venkataprasad.potturu@....com>, <Basavaraj.Hiregoudar@....com>,
	<Sunil-kumar.Dommati@....com>, <lgirdwood@...il.com>, <perex@...ex.cz>,
	<tiwai@...e.com>, <linux-kernel@...r.kernel.org>,
	<linux-sound@...r.kernel.org>, <Syed.SabaKareem@....com>,
	<Mario.Limonciello@....com>, Vijendar Mukunda <Vijendar.Mukunda@....com>
Subject: [PATCH V3 15/25] ASoC: amd: ps: implement function to restore dma config for ACP7.0 platform

Implement function to restore the dma configuration during system level
resume for ACP7.0 & ACP7.1 platforms. Add a conditional check to invoke
restore dma configuration function based on acp pci revision id.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
---
 sound/soc/amd/ps/acp63.h      |  2 ++
 sound/soc/amd/ps/ps-sdw-dma.c | 46 ++++++++++++++++++++++++++++++++++-
 2 files changed, 47 insertions(+), 1 deletion(-)

diff --git a/sound/soc/amd/ps/acp63.h b/sound/soc/amd/ps/acp63.h
index 4d197bb8271a..0aef3a852ff1 100644
--- a/sound/soc/amd/ps/acp63.h
+++ b/sound/soc/amd/ps/acp63.h
@@ -142,6 +142,8 @@
 
 #define ACP70_SDW0_DMA_MAX_STREAMS	6
 #define ACP70_SDW1_DMA_MAX_STREAMS	ACP70_SDW0_DMA_MAX_STREAMS
+#define ACP70_SDW_DMA_IRQ_MASK		0x1F800000
+#define ACP70_P1_SDW_DMA_IRQ_MASK	0x1F8
 
 #define ACP70_P1_AUDIO0_TX_THRESHOLD      0x8
 #define ACP70_P1_AUDIO1_TX_THRESHOLD      0x6
diff --git a/sound/soc/amd/ps/ps-sdw-dma.c b/sound/soc/amd/ps/ps-sdw-dma.c
index 2966244eb25e..557d312a23b2 100644
--- a/sound/soc/amd/ps/ps-sdw-dma.c
+++ b/sound/soc/amd/ps/ps-sdw-dma.c
@@ -725,12 +725,56 @@ static int acp63_restore_sdw_dma_config(struct sdw_dma_dev_data *sdw_data)
 	return 0;
 }
 
+static int acp70_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, irq_mask, irq_mask1;
+	int index, instance, ret;
+
+	irq_mask = ACP70_SDW_DMA_IRQ_MASK;
+	irq_mask1 = ACP70_P1_SDW_DMA_IRQ_MASK;
+	stream_count = ACP70_SDW0_DMA_MAX_STREAMS;
+	for (instance = 0; instance < AMD_SDW_MAX_MANAGERS; instance++) {
+		for (index = 0; index < stream_count; index++) {
+			if (instance == ACP_SDW0) {
+				substream = sdw_data->acp70_sdw0_dma_stream[index];
+				water_mark_size_reg = acp70_sdw0_dma_reg[index].water_mark_size_reg;
+			} else {
+				substream = sdw_data->acp70_sdw1_dma_stream[index];
+				water_mark_size_reg = acp70_sdw1_dma_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,
+								     sdw_data->acp_rev);
+				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, irq_mask, irq_mask1, 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 acp63_restore_sdw_dma_config(sdw_data);
+	if (sdw_data->acp_rev == ACP63_PCI_REV)
+		return acp63_restore_sdw_dma_config(sdw_data);
+	else
+		return acp70_restore_sdw_dma_config(sdw_data);
 }
 
 static const struct dev_pm_ops acp63_pm_ops = {
-- 
2.34.1