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Diffstat (limited to 'meta-amdfalconx86/recipes-kernel/linux/files/1129-ASoC-AMD-Manage-ACP-2.x-SRAM-banks-power.patch')
-rw-r--r--meta-amdfalconx86/recipes-kernel/linux/files/1129-ASoC-AMD-Manage-ACP-2.x-SRAM-banks-power.patch190
1 files changed, 0 insertions, 190 deletions
diff --git a/meta-amdfalconx86/recipes-kernel/linux/files/1129-ASoC-AMD-Manage-ACP-2.x-SRAM-banks-power.patch b/meta-amdfalconx86/recipes-kernel/linux/files/1129-ASoC-AMD-Manage-ACP-2.x-SRAM-banks-power.patch
deleted file mode 100644
index 76135b6e..00000000
--- a/meta-amdfalconx86/recipes-kernel/linux/files/1129-ASoC-AMD-Manage-ACP-2.x-SRAM-banks-power.patch
+++ /dev/null
@@ -1,190 +0,0 @@
-From 21a602911b8e34e680a969e28db3f9966567612d Mon Sep 17 00:00:00 2001
-From: Maruthi Srinivas Bayyavarapu <Maruthi.Bayyavarapu@amd.com>
-Date: Mon, 21 Dec 2015 16:13:29 +0530
-Subject: [PATCH 04/17] ASoC: AMD: Manage ACP 2.x SRAM banks power
-
-ACP SRAM banks gets turned on when ACP is powered on.
-Not all banks are used for playback/capture. So, power on
-required banks during audio device open and power off during
-audio device close.
-
-Signed-off-by: Maruthi Bayyavarapu <maruthi.bayyavarapu@amd.com>
-Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
-Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
-Signed-off-by: Kalyan Alle <kalyan.alle@amd.com>
----
- sound/soc/amd/acp-pcm-dma.c | 94 +++++++++++++++++++++++++++++++++++++++++----
- 1 file changed, 87 insertions(+), 7 deletions(-)
-
-diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
-index c0819b5..cc8b841 100644
---- a/sound/soc/amd/acp-pcm-dma.c
-+++ b/sound/soc/amd/acp-pcm-dma.c
-@@ -376,9 +376,57 @@ static int acp_dma_stop(void __iomem *acp_mmio, u8 ch_num)
- return 0;
- }
-
-+static void acp_set_sram_bank_state(void __iomem *acp_mmio, u16 bank,
-+ bool power_on)
-+{
-+ u32 val, req_reg, sts_reg, sts_reg_mask;
-+ u32 loops = 1000;
-+
-+ if (bank < 32) {
-+ req_reg = mmACP_MEM_SHUT_DOWN_REQ_LO;
-+ sts_reg = mmACP_MEM_SHUT_DOWN_STS_LO;
-+ sts_reg_mask = 0xFFFFFFFF;
-+
-+ } else {
-+ bank -= 32;
-+ req_reg = mmACP_MEM_SHUT_DOWN_REQ_HI;
-+ sts_reg = mmACP_MEM_SHUT_DOWN_STS_HI;
-+ sts_reg_mask = 0x0000FFFF;
-+ }
-+
-+ val = acp_reg_read(acp_mmio, req_reg);
-+ if (val & (1 << bank)) {
-+ /* bank is in off state */
-+ if (power_on == true)
-+ /* request to on */
-+ val &= ~(1 << bank);
-+ else
-+ /* request to off */
-+ return;
-+ } else {
-+ /* bank is in on state */
-+ if (power_on == false)
-+ /* request to off */
-+ val |= 1 << bank;
-+ else
-+ /* request to on */
-+ return;
-+ }
-+ acp_reg_write(val, acp_mmio, req_reg);
-+
-+ while (acp_reg_read(acp_mmio, sts_reg) != sts_reg_mask) {
-+ if (!loops--) {
-+ pr_err("ACP SRAM bank %d state change failed\n", bank);
-+ break;
-+ }
-+ cpu_relax();
-+ }
-+}
-+
- /* Initialize and bring ACP hardware to default state. */
- static int acp_init(void __iomem *acp_mmio)
- {
-+ u16 bank;
- u32 val, count, sram_pte_offset;
-
- /* Assert Soft reset of ACP */
-@@ -447,6 +495,13 @@ static int acp_init(void __iomem *acp_mmio)
- acp_reg_write(ACP_EXTERNAL_INTR_CNTL__DMAIOCMask_MASK,
- acp_mmio, mmACP_EXTERNAL_INTR_CNTL);
-
-+ /* When ACP_TILE_P1 is turned on, all SRAM banks get turned on.
-+ * Now, turn off all of them. This can't be done in 'poweron' of
-+ * ACP pm domain, as this requires ACP to be initialized.
-+ */
-+ for (bank = 1; bank < 48; bank++)
-+ acp_set_sram_bank_state(acp_mmio, bank, false);
-+
- return 0;
- }
-
-@@ -559,6 +614,7 @@ static irqreturn_t dma_irq_handler(int irq, void *arg)
-
- static int acp_dma_open(struct snd_pcm_substream *substream)
- {
-+ u16 bank;
- int ret = 0;
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct snd_soc_pcm_runtime *prtd = substream->private_data;
-@@ -592,10 +648,17 @@ static int acp_dma_open(struct snd_pcm_substream *substream)
- if (!intr_data->play_stream && !intr_data->capture_stream)
- acp_reg_write(1, adata->acp_mmio, mmACP_EXTERNAL_INTR_ENB);
-
-- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- intr_data->play_stream = substream;
-- else
-+ for (bank = 1; bank <= 4; bank++)
-+ acp_set_sram_bank_state(intr_data->acp_mmio, bank,
-+ true);
-+ } else {
- intr_data->capture_stream = substream;
-+ for (bank = 5; bank <= 8; bank++)
-+ acp_set_sram_bank_state(intr_data->acp_mmio, bank,
-+ true);
-+ }
-
- return 0;
- }
-@@ -627,6 +690,7 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
- pg = virt_to_page(substream->dma_buffer.area);
-
- if (pg != NULL) {
-+ acp_set_sram_bank_state(rtd->acp_mmio, 0, true);
- /* Save for runtime private data */
- rtd->pg = pg;
- rtd->order = get_order(size);
-@@ -802,6 +866,7 @@ static int acp_dma_new(struct snd_soc_pcm_runtime *rtd)
-
- static int acp_dma_close(struct snd_pcm_substream *substream)
- {
-+ u16 bank;
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct audio_substream_data *rtd = runtime->private_data;
- struct snd_soc_pcm_runtime *prtd = substream->private_data;
-@@ -809,10 +874,17 @@ static int acp_dma_close(struct snd_pcm_substream *substream)
-
- kfree(rtd);
-
-- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- adata->play_stream = NULL;
-- else
-+ for (bank = 1; bank <= 4; bank++)
-+ acp_set_sram_bank_state(adata->acp_mmio, bank,
-+ false);
-+ } else {
- adata->capture_stream = NULL;
-+ for (bank = 5; bank <= 8; bank++)
-+ acp_set_sram_bank_state(adata->acp_mmio, bank,
-+ false);
-+ }
-
- /* Disable ACP irq, when the current stream is being closed and
- * another stream is also not active.
-@@ -906,17 +978,25 @@ static int acp_audio_remove(struct platform_device *pdev)
-
- static int acp_pcm_resume(struct device *dev)
- {
-+ u16 bank;
- struct audio_drv_data *adata = dev_get_drvdata(dev);
-
- acp_init(adata->acp_mmio);
-
-- if (adata->play_stream && adata->play_stream->runtime)
-+ if (adata->play_stream && adata->play_stream->runtime) {
-+ for (bank = 1; bank <= 4; bank++)
-+ acp_set_sram_bank_state(adata->acp_mmio, bank,
-+ true);
- config_acp_dma(adata->acp_mmio,
- adata->play_stream->runtime->private_data);
-- if (adata->capture_stream && adata->capture_stream->runtime)
-+ }
-+ if (adata->capture_stream && adata->capture_stream->runtime) {
-+ for (bank = 5; bank <= 8; bank++)
-+ acp_set_sram_bank_state(adata->acp_mmio, bank,
-+ true);
- config_acp_dma(adata->acp_mmio,
- adata->capture_stream->runtime->private_data);
--
-+ }
- acp_reg_write(1, adata->acp_mmio, mmACP_EXTERNAL_INTR_ENB);
- return 0;
- }
---
-2.7.4
-
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-19 22:05:51 +0000