diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/1107-ASoC-AMD-Add-ACP3x-runtime-pm-ops.patch')
-rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/1107-ASoC-AMD-Add-ACP3x-runtime-pm-ops.patch | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/1107-ASoC-AMD-Add-ACP3x-runtime-pm-ops.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/1107-ASoC-AMD-Add-ACP3x-runtime-pm-ops.patch new file mode 100644 index 00000000..ea5b15a4 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/1107-ASoC-AMD-Add-ACP3x-runtime-pm-ops.patch @@ -0,0 +1,89 @@ +From f4623d41bb204382ecacb7ca35975a48a9d81784 Mon Sep 17 00:00:00 2001 +From: Maruthi Srinivas Bayyavarapu <Maruthi.Bayyavarapu@amd.com> +Date: Thu, 30 Mar 2017 15:28:15 +0530 +Subject: [PATCH 1107/4131] ASoC: AMD: Add ACP3x runtime pm ops + +Added runtime PM operations for ACP3x PCM platform device. Device will +be powered on/off based on device is in use or not. + +Signed-off-by: Maruthi Bayyavarapu <maruthi.bayyavarapu@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + sound/soc/amd/raven/acp3x-pcm-dma.c | 39 +++++++++++++++++++++++++++++++++++++ + 1 file changed, 39 insertions(+) + +diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c +index f62bb7f..a5d3807 100644 +--- a/sound/soc/amd/raven/acp3x-pcm-dma.c ++++ b/sound/soc/amd/raven/acp3x-pcm-dma.c +@@ -16,6 +16,7 @@ + #include <linux/platform_device.h> + #include <linux/module.h> + #include <linux/err.h> ++#include <linux/pm_runtime.h> + + #include <sound/pcm.h> + #include <sound/pcm_params.h> +@@ -676,6 +677,9 @@ static int acp3x_audio_probe(struct platform_device *pdev) + goto dev_err; + } + ++ pm_runtime_set_autosuspend_delay(&pdev->dev, 10000); ++ pm_runtime_use_autosuspend(&pdev->dev); ++ pm_runtime_enable(&pdev->dev); + return 0; + dev_err: + status = acp3x_deinit(adata->acp3x_base); +@@ -701,14 +705,49 @@ static int acp3x_audio_remove(struct platform_device *pdev) + else + dev_info(&pdev->dev, "ACP de-initialized\n"); + ++ pm_runtime_disable(&pdev->dev); + return 0; + } + ++static int acp3x_pcm_runtime_suspend(struct device *dev) ++{ ++ int status; ++ struct i2s_dev_data *adata = dev_get_drvdata(dev); ++ ++ status = acp3x_deinit(adata->acp3x_base); ++ if (status) ++ dev_err(dev, "ACP de-init failed\n"); ++ else ++ dev_info(dev, "ACP de-initialized\n"); ++ ++ rv_writel(0, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB); ++ ++ return 0; ++} ++ ++static int acp3x_pcm_runtime_resume(struct device *dev) ++{ ++ int status; ++ struct i2s_dev_data *adata = dev_get_drvdata(dev); ++ ++ status = acp3x_init(adata->acp3x_base); ++ if (status) ++ return -ENODEV; ++ rv_writel(1, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB); ++ return 0; ++} ++ ++static const struct dev_pm_ops acp3x_pm_ops = { ++ .runtime_suspend = acp3x_pcm_runtime_suspend, ++ .runtime_resume = acp3x_pcm_runtime_resume, ++}; ++ + static struct platform_driver acp3x_dma_driver = { + .probe = acp3x_audio_probe, + .remove = acp3x_audio_remove, + .driver = { + .name = "acp3x_rv_i2s", ++ .pm = &acp3x_pm_ops, + }, + }; + +-- +2.7.4 + |