[alsa-devel] [PATCH v2 09/12] ASoC: SOF: Intel: hda: fix the hda init chip
Pierre-Louis Bossart
pierre-louis.bossart at linux.intel.com
Wed May 22 18:21:39 CEST 2019
From: Zhu Yingjiang <yingjiang.zhu at linux.intel.com>
re-write hda_init_caps and remove the HDA reset, clean HDA
streams and clear interrupt steps in hda_dsp_probe so the
HDA init steps will not be called twice if the
CONFIG_SND_SOC_SOF_HDA is true.
Fixes: 8a300c8fb17 ("ASoC: SOF: Intel: Add HDA controller for Intel DSP")
Reviewed-by: Takashi Iwai <tiwai at suse.de>
Signed-off-by: Zhu Yingjiang <yingjiang.zhu at linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---
sound/soc/sof/intel/hda-ctrl.c | 102 ++++++++++++++++++++++++++++++---
sound/soc/sof/intel/hda.c | 99 ++++++--------------------------
2 files changed, 112 insertions(+), 89 deletions(-)
diff --git a/sound/soc/sof/intel/hda-ctrl.c b/sound/soc/sof/intel/hda-ctrl.c
index 2c3645736e1f..07bc123112c9 100644
--- a/sound/soc/sof/intel/hda-ctrl.c
+++ b/sound/soc/sof/intel/hda-ctrl.c
@@ -161,21 +161,105 @@ int hda_dsp_ctrl_clock_power_gating(struct snd_sof_dev *sdev, bool enable)
return 0;
}
-#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
-/*
- * While performing reset, controller may not come back properly and causing
- * issues, so recommendation is to set CGCTL.MISCBDCGE to 0 then do reset
- * (init chip) and then again set CGCTL.MISCBDCGE to 1
- */
int hda_dsp_ctrl_init_chip(struct snd_sof_dev *sdev, bool full_reset)
{
struct hdac_bus *bus = sof_to_bus(sdev);
- int ret;
+ struct hdac_stream *stream;
+ int sd_offset, ret = 0;
+
+ if (bus->chip_init)
+ return 0;
hda_dsp_ctrl_misc_clock_gating(sdev, false);
- ret = snd_hdac_bus_init_chip(bus, full_reset);
+
+ if (full_reset) {
+ /* clear WAKESTS */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
+ SOF_HDA_WAKESTS_INT_MASK,
+ SOF_HDA_WAKESTS_INT_MASK);
+
+ /* reset HDA controller */
+ ret = hda_dsp_ctrl_link_reset(sdev, true);
+ if (ret < 0) {
+ dev_err(sdev->dev, "error: failed to reset HDA controller\n");
+ return ret;
+ }
+
+ usleep_range(500, 1000);
+
+ /* exit HDA controller reset */
+ ret = hda_dsp_ctrl_link_reset(sdev, false);
+ if (ret < 0) {
+ dev_err(sdev->dev, "error: failed to exit HDA controller reset\n");
+ return ret;
+ }
+
+ usleep_range(1000, 1200);
+ }
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+ /* check to see if controller is ready */
+ if (!snd_hdac_chip_readb(bus, GCTL)) {
+ dev_dbg(bus->dev, "controller not ready!\n");
+ return -EBUSY;
+ }
+
+ /* Accept unsolicited responses */
+ snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_UNSOL, AZX_GCTL_UNSOL);
+
+ /* detect codecs */
+ if (!bus->codec_mask) {
+ bus->codec_mask = snd_hdac_chip_readw(bus, STATESTS);
+ dev_dbg(bus->dev, "codec_mask = 0x%lx\n", bus->codec_mask);
+ }
+#endif
+
+ /* clear stream status */
+ list_for_each_entry(stream, &bus->stream_list, list) {
+ sd_offset = SOF_STREAM_SD_OFFSET(stream);
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
+ sd_offset +
+ SOF_HDA_ADSP_REG_CL_SD_STS,
+ SOF_HDA_CL_DMA_SD_INT_MASK,
+ SOF_HDA_CL_DMA_SD_INT_MASK);
+ }
+
+ /* clear WAKESTS */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
+ SOF_HDA_WAKESTS_INT_MASK,
+ SOF_HDA_WAKESTS_INT_MASK);
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+ /* clear rirb status */
+ snd_hdac_chip_writeb(bus, RIRBSTS, RIRB_INT_MASK);
+#endif
+
+ /* clear interrupt status register */
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTSTS,
+ SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_ALL_STREAM);
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+ /* initialize the codec command I/O */
+ snd_hdac_bus_init_cmd_io(bus);
+#endif
+
+ /* enable CIE and GIE interrupts */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL,
+ SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN,
+ SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN);
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+ /* program the position buffer */
+ if (bus->use_posbuf && bus->posbuf.addr) {
+ snd_hdac_chip_writel(bus, DPLBASE, (u32)bus->posbuf.addr);
+ snd_hdac_chip_writel(bus, DPUBASE,
+ upper_32_bits(bus->posbuf.addr));
+ }
+#endif
+
+ bus->chip_init = true;
+
hda_dsp_ctrl_misc_clock_gating(sdev, true);
return ret;
}
-#endif
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 7e3980a2f7ba..e47f03dc62f0 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -264,9 +264,12 @@ static const char *fixup_tplg_name(struct snd_sof_dev *sdev,
return tplg_filename;
}
+#endif
+
static int hda_init_caps(struct snd_sof_dev *sdev)
{
struct hdac_bus *bus = sof_to_bus(sdev);
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
struct hdac_ext_link *hlink;
struct snd_soc_acpi_mach_params *mach_params;
struct snd_soc_acpi_mach *hda_mach;
@@ -274,8 +277,9 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
struct snd_soc_acpi_mach *mach;
const char *tplg_filename;
int codec_num = 0;
- int ret = 0;
int i;
+#endif
+ int ret = 0;
device_disable_async_suspend(bus->dev);
@@ -283,6 +287,14 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
if (bus->ppcap)
dev_dbg(sdev->dev, "PP capability, will probe DSP later.\n");
+ ret = hda_dsp_ctrl_init_chip(sdev, true);
+ if (ret < 0) {
+ dev_err(bus->dev, "error: init chip failed with ret: %d\n",
+ ret);
+ return ret;
+ }
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
if (bus->mlcap)
snd_hdac_ext_bus_get_ml_capabilities(bus);
@@ -293,12 +305,6 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
return ret;
}
- ret = hda_dsp_ctrl_init_chip(sdev, true);
- if (ret < 0) {
- dev_err(bus->dev, "error: init chip failed with ret: %d\n", ret);
- goto out;
- }
-
/* codec detection */
if (!bus->codec_mask) {
dev_info(bus->dev, "no hda codecs found!\n");
@@ -339,8 +345,10 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
/* use local variable for readability */
tplg_filename = pdata->tplg_filename;
tplg_filename = fixup_tplg_name(sdev, tplg_filename);
- if (!tplg_filename)
- goto out;
+ if (!tplg_filename) {
+ hda_codec_i915_exit(sdev);
+ return ret;
+ }
pdata->tplg_filename = tplg_filename;
}
}
@@ -364,35 +372,10 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
*/
list_for_each_entry(hlink, &bus->hlink_list, list)
snd_hdac_ext_bus_link_put(bus, hlink);
-
- return 0;
-
-out:
- hda_codec_i915_exit(sdev);
- return ret;
-}
-
-#else
-
-static int hda_init_caps(struct snd_sof_dev *sdev)
-{
- /*
- * set CGCTL.MISCBDCGE to 0 during reset and set back to 1
- * when reset finished.
- * TODO: maybe no need for init_caps?
- */
- hda_dsp_ctrl_misc_clock_gating(sdev, 0);
-
- /* clear WAKESTS */
- snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
- SOF_HDA_WAKESTS_INT_MASK,
- SOF_HDA_WAKESTS_INT_MASK);
-
+#endif
return 0;
}
-#endif
-
static const struct sof_intel_dsp_desc
*get_chip_info(struct snd_sof_pdata *pdata)
{
@@ -409,9 +392,8 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
struct pci_dev *pci = to_pci_dev(sdev->dev);
struct sof_intel_hda_dev *hdev;
struct hdac_bus *bus;
- struct hdac_stream *stream;
const struct sof_intel_dsp_desc *chip;
- int sd_offset, ret = 0;
+ int ret = 0;
/*
* detect DSP by checking class/subclass/prog-id information
@@ -558,49 +540,6 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
if (ret < 0)
goto free_ipc_irq;
- /* reset HDA controller */
- ret = hda_dsp_ctrl_link_reset(sdev, true);
- if (ret < 0) {
- dev_err(sdev->dev, "error: failed to reset HDA controller\n");
- goto free_ipc_irq;
- }
-
- /* exit HDA controller reset */
- ret = hda_dsp_ctrl_link_reset(sdev, false);
- if (ret < 0) {
- dev_err(sdev->dev, "error: failed to exit HDA controller reset\n");
- goto free_ipc_irq;
- }
-
- /* clear stream status */
- list_for_each_entry(stream, &bus->stream_list, list) {
- sd_offset = SOF_STREAM_SD_OFFSET(stream);
- snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
- sd_offset +
- SOF_HDA_ADSP_REG_CL_SD_STS,
- SOF_HDA_CL_DMA_SD_INT_MASK,
- SOF_HDA_CL_DMA_SD_INT_MASK);
- }
-
- /* clear WAKESTS */
- snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_WAKESTS,
- SOF_HDA_WAKESTS_INT_MASK,
- SOF_HDA_WAKESTS_INT_MASK);
-
- /* clear interrupt status register */
- snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTSTS,
- SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_ALL_STREAM);
-
- /* enable CIE and GIE interrupts */
- snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL,
- SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN,
- SOF_HDA_INT_CTRL_EN | SOF_HDA_INT_GLOBAL_EN);
-
- /* re-enable CGCTL.MISCBDCGE after reset */
- hda_dsp_ctrl_misc_clock_gating(sdev, true);
-
- device_disable_async_suspend(&pci->dev);
-
/* enable DSP features */
snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
SOF_HDA_PPCTL_GPROCEN, SOF_HDA_PPCTL_GPROCEN);
--
2.20.1
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