The patch
ASoC: SOF: Intel: hda-dsp: Add helper for setting DSP D0ix substate
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.5
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 62f8f76604623980d41cf73691ca45288871efd9 Mon Sep 17 00:00:00 2001
From: Keyon Jie yang.jie@linux.intel.com Date: Fri, 25 Oct 2019 17:41:00 -0500 Subject: [PATCH] ASoC: SOF: Intel: hda-dsp: Add helper for setting DSP D0ix substate
Adding helper to implement setting dsp to d0i3 or d0i0 status, this will be needed for driver D0ix support.
Signed-off-by: Keyon Jie yang.jie@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Link: https://lore.kernel.org/r/20191025224122.7718-5-pierre-louis.bossart@linux.i... Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/sof/intel/hda-dsp.c | 46 +++++++++++++++++++++++++++++++++++ sound/soc/sof/intel/hda.h | 10 ++++++++ 2 files changed, 56 insertions(+)
diff --git a/sound/soc/sof/intel/hda-dsp.c b/sound/soc/sof/intel/hda-dsp.c index 3ea401646e0c..fa2f1f66c72c 100644 --- a/sound/soc/sof/intel/hda-dsp.c +++ b/sound/soc/sof/intel/hda-dsp.c @@ -306,6 +306,52 @@ void hda_dsp_ipc_int_disable(struct snd_sof_dev *sdev) HDA_DSP_REG_HIPCCTL_BUSY | HDA_DSP_REG_HIPCCTL_DONE, 0); }
+static int hda_dsp_wait_d0i3c_done(struct snd_sof_dev *sdev, int retry) +{ + struct hdac_bus *bus = sof_to_bus(sdev); + + while (snd_hdac_chip_readb(bus, VS_D0I3C) & SOF_HDA_VS_D0I3C_CIP) { + if (!retry--) + return -ETIMEDOUT; + usleep_range(10, 15); + } + + return 0; +} + +int hda_dsp_set_power_state(struct snd_sof_dev *sdev, + enum sof_d0_substate d0_substate) +{ + struct hdac_bus *bus = sof_to_bus(sdev); + int retry = 50; + int ret; + u8 value; + + /* Write to D0I3C after Command-In-Progress bit is cleared */ + ret = hda_dsp_wait_d0i3c_done(sdev, retry); + if (ret < 0) { + dev_err(bus->dev, "CIP timeout before update D0I3C!\n"); + return ret; + } + + /* Update D0I3C register */ + value = d0_substate == SOF_DSP_D0I3 ? SOF_HDA_VS_D0I3C_I3 : 0; + snd_hdac_chip_updateb(bus, VS_D0I3C, SOF_HDA_VS_D0I3C_I3, value); + + /* Wait for cmd in progress to be cleared before exiting the function */ + retry = 50; + ret = hda_dsp_wait_d0i3c_done(sdev, retry); + if (ret < 0) { + dev_err(bus->dev, "CIP timeout after D0I3C updated!\n"); + return ret; + } + + dev_vdbg(bus->dev, "D0I3C updated, register = 0x%x\n", + snd_hdac_chip_readb(bus, VS_D0I3C)); + + return 0; +} + static int hda_suspend(struct snd_sof_dev *sdev, bool runtime_suspend) { struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h index ea02bf40cb25..0e7c366b8f71 100644 --- a/sound/soc/sof/intel/hda.h +++ b/sound/soc/sof/intel/hda.h @@ -64,6 +64,13 @@ #define SOF_HDA_PPCTL_PIE BIT(31) #define SOF_HDA_PPCTL_GPROCEN BIT(30)
+/*Vendor Specific Registers*/ +#define SOF_HDA_VS_D0I3C 0x104A + +/* D0I3C Register fields */ +#define SOF_HDA_VS_D0I3C_CIP BIT(0) /* Command-In-Progress */ +#define SOF_HDA_VS_D0I3C_I3 BIT(2) /* D0i3 enable bit */ + /* DPIB entry size: 8 Bytes = 2 DWords */ #define SOF_HDA_DPIB_ENTRY_SIZE 0x8
@@ -455,6 +462,9 @@ int hda_dsp_core_reset_power_down(struct snd_sof_dev *sdev, void hda_dsp_ipc_int_enable(struct snd_sof_dev *sdev); void hda_dsp_ipc_int_disable(struct snd_sof_dev *sdev);
+int hda_dsp_set_power_state(struct snd_sof_dev *sdev, + enum sof_d0_substate d0_substate); + int hda_dsp_suspend(struct snd_sof_dev *sdev); int hda_dsp_resume(struct snd_sof_dev *sdev); int hda_dsp_runtime_suspend(struct snd_sof_dev *sdev);