Merge series "ASoC: Intel: catpt: Offload fixes and code optimization" from Cezary Rojewski <[e-mail]>:

First two of the series address bugs connected mainly to offload streams:
- scenarios with very low buffer sizes: RESET_STREAM IPC timeouts
- fix lp clock selection when switching between PAUSE <-> RESUME states:
glitches on first offload when no additional stream is opened
simultaneously

Follow ups are: code reduction and optimization oriented patches.
This has been foretold in:

[PATCH v10 00/14] ASoC: Intel: Catpt - Lynx and Wildcat point
https://www.spinics.net/lists/alsa-devel/msg116440.html
Note: LPT power up/down sequences might get aligned with WPT once
enough testing is done as capabilities are shared for both DSPs.

First, optimize applying of user settings - prevent redundand calls from
happening - and then as mentioned above, streamline power on/off sequence
for LPT and WPT.

Cezary Rojewski (5):
ASoC: Intel: catpt: Skip position update for unprepared streams
ASoC: Intel: catpt: Correct clock selection for dai trigger
ASoC: Intel: catpt: Optimize applying user settings
ASoC: Intel: catpt: Streamline power routines across LPT and WPT
ASoC: Intel: catpt: Cleanup after power routines streamlining

sound/soc/intel/catpt/core.h | 10 ++-
sound/soc/intel/catpt/device.c | 18 +++---
sound/soc/intel/catpt/dsp.c | 56 ++--------------
sound/soc/intel/catpt/pcm.c | 113 ++++++++++++++++-----------------
4 files changed, 74 insertions(+), 123 deletions(-)

--
2.17.1

base-commit: 3650b228f83adda7e5ee532e2b90429c03f7b9ec

sound/soc/intel/catpt/core.h

···
 	u32 host_ssp_offset[CATPT_SSP_COUNT];
 	u32 dram_mask;
 	u32 iram_mask;
+	u32 d3srampgd_bit;
+	u32 d3pgd_bit;
 	void (*pll_shutdown)(struct catpt_dev *cdev, bool enable);
-	int (*power_up)(struct catpt_dev *cdev);
-	int (*power_down)(struct catpt_dev *cdev);
 };
 
 struct catpt_dev {
···
 
 void lpt_dsp_pll_shutdown(struct catpt_dev *cdev, bool enable);
 void wpt_dsp_pll_shutdown(struct catpt_dev *cdev, bool enable);
-int lpt_dsp_power_up(struct catpt_dev *cdev);
-int lpt_dsp_power_down(struct catpt_dev *cdev);
-int wpt_dsp_power_up(struct catpt_dev *cdev);
-int wpt_dsp_power_down(struct catpt_dev *cdev);
+int catpt_dsp_power_up(struct catpt_dev *cdev);
+int catpt_dsp_power_down(struct catpt_dev *cdev);
 int catpt_dsp_stall(struct catpt_dev *cdev, bool stall);
 void catpt_dsp_update_srampge(struct catpt_dev *cdev, struct resource *sram,
 			      unsigned long mask);

sound/soc/intel/catpt/device.c

···
 	dma_release_channel(chan);
 	if (ret)
 		return ret;
-	return cdev->spec->power_down(cdev);
+	return catpt_dsp_power_down(cdev);
 }
 
 static int __maybe_unused catpt_resume(struct device *dev)
···
 	struct catpt_dev *cdev = dev_get_drvdata(dev);
 	int ret, i;
 
-	ret = cdev->spec->power_up(cdev);
+	ret = catpt_dsp_power_up(cdev);
 	if (ret)
 		return ret;
 
···
 {
 	int ret;
 
-	ret = cdev->spec->power_up(cdev);
+	ret = catpt_dsp_power_up(cdev);
 	if (ret)
 		return ret;
 
···
 err_boot_fw:
 	catpt_dmac_remove(cdev);
 err_dmac_probe:
-	cdev->spec->power_down(cdev);
+	catpt_dsp_power_down(cdev);
 
 	return ret;
 }
···
 
 	snd_soc_unregister_component(cdev->dev);
 	catpt_dmac_remove(cdev);
-	cdev->spec->power_down(cdev);
+	catpt_dsp_power_down(cdev);
 
 	catpt_sram_free(&cdev->iram);
 	catpt_sram_free(&cdev->dram);
···
 	.host_ssp_offset = { 0x0E8000, 0x0E9000 },
 	.dram_mask = LPT_VDRTCTL0_DSRAMPGE_MASK,
 	.iram_mask = LPT_VDRTCTL0_ISRAMPGE_MASK,
+	.d3srampgd_bit = LPT_VDRTCTL0_D3SRAMPGD,
+	.d3pgd_bit = LPT_VDRTCTL0_D3PGD,
 	.pll_shutdown = lpt_dsp_pll_shutdown,
-	.power_up = lpt_dsp_power_up,
-	.power_down = lpt_dsp_power_down,
 };
 
 static struct catpt_spec wpt_desc = {
···
 	.host_ssp_offset = { 0x0FC000, 0x0FD000 },
 	.dram_mask = WPT_VDRTCTL0_DSRAMPGE_MASK,
 	.iram_mask = WPT_VDRTCTL0_ISRAMPGE_MASK,
+	.d3srampgd_bit = WPT_VDRTCTL0_D3SRAMPGD,
+	.d3pgd_bit = WPT_VDRTCTL0_D3PGD,
 	.pll_shutdown = wpt_dsp_pll_shutdown,
-	.power_up = wpt_dsp_power_up,
-	.power_down = wpt_dsp_power_down,
 };
 
 static const struct acpi_device_id catpt_ids[] = {

sound/soc/intel/catpt/dsp.c

···
 	}
 }
 
-int lpt_dsp_power_down(struct catpt_dev *cdev)
-{
-	catpt_dsp_reset(cdev, true);
-
-	/* set 24Mhz clock for both SSPs */
-	catpt_updatel_shim(cdev, CS1, CATPT_CS_SBCS(0) | CATPT_CS_SBCS(1),
-			   CATPT_CS_SBCS(0) | CATPT_CS_SBCS(1));
-	catpt_dsp_select_lpclock(cdev, true, false);
-
-	/* DRAM power gating all */
-	catpt_dsp_set_srampge(cdev, &cdev->dram, cdev->spec->dram_mask,
-			      cdev->spec->dram_mask);
-	catpt_dsp_set_srampge(cdev, &cdev->iram, cdev->spec->iram_mask,
-			      cdev->spec->iram_mask);
-
-	catpt_updatel_pci(cdev, PMCS, PCI_PM_CTRL_STATE_MASK, PCI_D3hot);
-	/* give hw time to drop off */
-	udelay(50);
-
-	return 0;
-}
-
-int lpt_dsp_power_up(struct catpt_dev *cdev)
-{
-	/* SRAM power gating none */
-	catpt_dsp_set_srampge(cdev, &cdev->dram, cdev->spec->dram_mask, 0);
-	catpt_dsp_set_srampge(cdev, &cdev->iram, cdev->spec->iram_mask, 0);
-
-	catpt_updatel_pci(cdev, PMCS, PCI_PM_CTRL_STATE_MASK, PCI_D0);
-	/* give hw time to wake up */
-	udelay(100);
-
-	catpt_dsp_select_lpclock(cdev, false, false);
-	catpt_updatel_shim(cdev, CS1,
-			   CATPT_CS_SBCS(0) | CATPT_CS_SBCS(1),
-			   CATPT_CS_SBCS(0) | CATPT_CS_SBCS(1));
-	/* stagger DSP reset after clock selection */
-	udelay(50);
-
-	catpt_dsp_reset(cdev, false);
-	/* generate int deassert msg to fix inversed int logic */
-	catpt_updatel_shim(cdev, IMC, CATPT_IMC_IPCDB | CATPT_IMC_IPCCD, 0);
-
-	return 0;
-}
-
-int wpt_dsp_power_down(struct catpt_dev *cdev)
+int catpt_dsp_power_down(struct catpt_dev *cdev)
 {
 	u32 mask, val;
 
···
 			      cdev->spec->dram_mask);
 	catpt_dsp_set_srampge(cdev, &cdev->iram, cdev->spec->iram_mask,
 			      cdev->spec->iram_mask);
-	mask = WPT_VDRTCTL0_D3SRAMPGD | WPT_VDRTCTL0_D3PGD;
-	catpt_updatel_pci(cdev, VDRTCTL0, mask, WPT_VDRTCTL0_D3PGD);
+	mask = cdev->spec->d3srampgd_bit | cdev->spec->d3pgd_bit;
+	catpt_updatel_pci(cdev, VDRTCTL0, mask, cdev->spec->d3pgd_bit);
 
 	catpt_updatel_pci(cdev, PMCS, PCI_PM_CTRL_STATE_MASK, PCI_D3hot);
 	/* give hw time to drop off */
···
 	return 0;
 }
 
-int wpt_dsp_power_up(struct catpt_dev *cdev)
+int catpt_dsp_power_up(struct catpt_dev *cdev)
 {
 	u32 mask, val;
 
···
 	catpt_updatel_pci(cdev, PMCS, PCI_PM_CTRL_STATE_MASK, PCI_D0);
 
 	/* SRAM power gating none */
-	mask = WPT_VDRTCTL0_D3SRAMPGD | WPT_VDRTCTL0_D3PGD;
+	mask = cdev->spec->d3srampgd_bit | cdev->spec->d3pgd_bit;
 	catpt_updatel_pci(cdev, VDRTCTL0, mask, mask);
 	catpt_dsp_set_srampge(cdev, &cdev->dram, cdev->spec->dram_mask, 0);
 	catpt_dsp_set_srampge(cdev, &cdev->iram, cdev->spec->iram_mask, 0);

sound/soc/intel/catpt/pcm.c

···
 	snd_soc_dai_set_dma_data(dai, substream, NULL);
 }
 
+static int catpt_set_dspvol(struct catpt_dev *cdev, u8 stream_id, long *ctlvol);
+
+static int catpt_dai_apply_usettings(struct snd_soc_dai *dai,
+				     struct catpt_stream_runtime *stream)
+{
+	struct catpt_dev *cdev = dev_get_drvdata(dai->dev);
+	struct snd_soc_component *component = dai->component;
+	struct snd_kcontrol *pos, *kctl = NULL;
+	const char *name;
+	int ret;
+	u32 id = stream->info.stream_hw_id;
+
+	/* only selected streams have individual controls */
+	switch (id) {
+	case CATPT_PIN_ID_OFFLOAD1:
+		name = "Media0 Playback Volume";
+		break;
+	case CATPT_PIN_ID_OFFLOAD2:
+		name = "Media1 Playback Volume";
+		break;
+	case CATPT_PIN_ID_CAPTURE1:
+		name = "Mic Capture Volume";
+		break;
+	case CATPT_PIN_ID_REFERENCE:
+		name = "Loopback Mute";
+		break;
+	default:
+		return 0;
+	};
+
+	list_for_each_entry(pos, &component->card->snd_card->controls, list) {
+		if (pos->private_data == component &&
+		    !strncmp(name, pos->id.name, sizeof(pos->id.name))) {
+			kctl = pos;
+			break;
+		}
+	}
+	if (!kctl)
+		return -ENOENT;
+
+	if (stream->template->type != CATPT_STRM_TYPE_LOOPBACK)
+		return catpt_set_dspvol(cdev, id, (long *)kctl->private_value);
+	ret = catpt_ipc_mute_loopback(cdev, id, *(bool *)kctl->private_value);
+	if (ret)
+		return CATPT_IPC_ERROR(ret);
+	return 0;
+}
+
 static int catpt_dai_hw_params(struct snd_pcm_substream *substream,
 			       struct snd_pcm_hw_params *params,
 			       struct snd_soc_dai *dai)
···
 	if (ret)
 		return CATPT_IPC_ERROR(ret);
 
+	ret = catpt_dai_apply_usettings(dai, stream);
+	if (ret)
+		return ret;
+
 	stream->allocated = true;
 	return 0;
 }
···
 	return 0;
 }
 
-static int catpt_set_dspvol(struct catpt_dev *cdev, u8 stream_id, long *ctlvol);
-
-static int catpt_dai_apply_usettings(struct snd_soc_dai *dai,
-				     struct catpt_stream_runtime *stream)
-{
-	struct catpt_dev *cdev = dev_get_drvdata(dai->dev);
-	struct snd_soc_component *component = dai->component;
-	struct snd_kcontrol *pos, *kctl = NULL;
-	const char *name;
-	int ret;
-	u32 id = stream->info.stream_hw_id;
-
-	/* only selected streams have individual controls */
-	switch (id) {
-	case CATPT_PIN_ID_OFFLOAD1:
-		name = "Media0 Playback Volume";
-		break;
-	case CATPT_PIN_ID_OFFLOAD2:
-		name = "Media1 Playback Volume";
-		break;
-	case CATPT_PIN_ID_CAPTURE1:
-		name = "Mic Capture Volume";
-		break;
-	case CATPT_PIN_ID_REFERENCE:
-		name = "Loopback Mute";
-		break;
-	default:
-		return 0;
-	}
-
-	list_for_each_entry(pos, &component->card->snd_card->controls, list) {
-		if (pos->private_data == component &&
-		    !strncmp(name, pos->id.name, sizeof(pos->id.name))) {
-			kctl = pos;
-			break;
-		}
-	}
-	if (!kctl)
-		return -ENOENT;
-
-	if (stream->template->type != CATPT_STRM_TYPE_LOOPBACK)
-		return catpt_set_dspvol(cdev, id, (long *)kctl->private_value);
-	ret = catpt_ipc_mute_loopback(cdev, id, *(bool *)kctl->private_value);
-	if (ret)
-		return CATPT_IPC_ERROR(ret);
-	return 0;
-}
-
 static int catpt_dai_prepare(struct snd_pcm_substream *substream,
 			     struct snd_soc_dai *dai)
 {
···
 	ret = catpt_ipc_pause_stream(cdev, stream->info.stream_hw_id);
 	if (ret)
 		return CATPT_IPC_ERROR(ret);
-
-	ret = catpt_dsp_update_lpclock(cdev);
-	if (ret)
-		return ret;
-
-	ret = catpt_dai_apply_usettings(dai, stream);
-	if (ret)
-		return ret;
 
 	stream->prepared = true;
 	return 0;
···
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 	resume_stream:
+		catpt_dsp_update_lpclock(cdev);
 		ret = catpt_ipc_resume_stream(cdev, stream->info.stream_hw_id);
 		if (ret)
 			return CATPT_IPC_ERROR(ret);
···
 
 	case SNDRV_PCM_TRIGGER_STOP:
 		stream->prepared = false;
-		catpt_dsp_update_lpclock(cdev);
 		fallthrough;
 	case SNDRV_PCM_TRIGGER_SUSPEND:
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 		ret = catpt_ipc_pause_stream(cdev, stream->info.stream_hw_id);
+		catpt_dsp_update_lpclock(cdev);
 		if (ret)
 			return CATPT_IPC_ERROR(ret);
 		break;
···
 
 	dsppos = bytes_to_frames(r, pos->stream_position);
 
+	if (!stream->prepared)
+		goto exit;
 	/* only offload is set_write_pos driven */
 	if (stream->template->type != CATPT_STRM_TYPE_RENDER)
 		goto exit;