Merge series "ASoC: SOF: finalize Baytrail/CherryTrail support" from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>:

This long-overdue patchset adds missing system suspend/resume support
and hardens the IPC to solve module load/unload issues on specific
devices such as Cyan Chromebook. With this series SOF is finally
iso-feature with the legacy driver. Thanks to Ranjani and Keyon for
the basic patches and Enric for testing.

The last part needed for Baytrail/Cherrytrail is simplification of the
driver/card names and turn-key UCM support (on-going work with
Jaroslav).

Keyon Jie (1):
  ASoC: SOF: Intel: BYT: harden IPC initialization and handling

Pierre-Louis Bossart (3):
  ASoC: Intel: bytcr_rt5640/51: remove .ignore_suspend
  ASoC: Intel: byt/cht: add .pm_ops
  ASoC: SOF: Intel: BYT: mask BUSY or DONE interrupts in handler

Ranjani Sridharan (4):
  ASoC: SOF: Intel: byt: Add PM callbacks
  ASoC: SOF: pm: handle resume on legacy Intel platforms
  ASoC: SOF: ipc: ignore DSP replies received when they are not expected
  ASoC: SOF: Intel: BYT: add .remove op

 sound/soc/intel/boards/bytcht_cx2072x.c      |   3 +
 sound/soc/intel/boards/bytcht_da7213.c       |   3 +
 sound/soc/intel/boards/bytcht_es8316.c       |   3 +
 sound/soc/intel/boards/bytcr_rt5640.c        |   7 +-
 sound/soc/intel/boards/bytcr_rt5651.c        |   6 +-
 sound/soc/intel/boards/cht_bsw_max98090_ti.c |   3 +
 sound/soc/intel/boards/cht_bsw_nau8824.c     |   3 +
 sound/soc/intel/boards/cht_bsw_rt5645.c      |   3 +
 sound/soc/intel/boards/cht_bsw_rt5672.c      |   3 +
 sound/soc/sof/intel/byt.c                    | 116 ++++++++++++++-----
 sound/soc/sof/ipc.c                          |   9 +-
 sound/soc/sof/pm.c                           |   8 +-
 sound/soc/sof/sof-priv.h                     |   2 +-
 13 files changed, 122 insertions(+), 47 deletions(-)

base-commit: 0d71a5cf69
--
2.20.1

sound/soc/intel/boards/bytcht_cx2072x.c

@@ -261,6 +261,9 @@ static int snd_byt_cht_cx2072x_probe(struct platform_device *pdev)
 static struct platform_driver snd_byt_cht_cx2072x_driver = {
 	.driver = {
 		.name = "bytcht_cx2072x",
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
+		.pm = &snd_soc_pm_ops,
+#endif
 	},
 	.probe = snd_byt_cht_cx2072x_probe,
 };

sound/soc/intel/boards/bytcht_da7213.c

@@ -272,6 +272,9 @@ static int bytcht_da7213_probe(struct platform_device *pdev)
 static struct platform_driver bytcht_da7213_driver = {
 	.driver = {
 		.name = "bytcht_da7213",
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
+		.pm = &snd_soc_pm_ops,
+#endif
 	},
 	.probe = bytcht_da7213_probe,
 };

sound/soc/intel/boards/bytcht_es8316.c

@@ -605,6 +605,9 @@ static int snd_byt_cht_es8316_mc_remove(struct platform_device *pdev)
 static struct platform_driver snd_byt_cht_es8316_mc_driver = {
 	.driver = {
 		.name = "bytcht_es8316",
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
+		.pm = &snd_soc_pm_ops,
+#endif
 	},
 	.probe = snd_byt_cht_es8316_mc_probe,
 	.remove = snd_byt_cht_es8316_mc_remove,

sound/soc/intel/boards/bytcr_rt5640.c

@@ -910,9 +910,6 @@ static int byt_rt5640_init(struct snd_soc_pcm_runtime *runtime)
 	if (ret)
 		return ret;
 
-	snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
-	snd_soc_dapm_ignore_suspend(&card->dapm, "Speaker");
-
 	if (byt_rt5640_quirk & BYT_RT5640_MCLK_EN) {
 		/*
 		 * The firmware might enable the clock at
@@ -1065,7 +1062,6 @@ static struct snd_soc_dai_link byt_rt5640_dais[] = {
 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 						| SND_SOC_DAIFMT_CBS_CFS,
 		.be_hw_params_fixup = byt_rt5640_codec_fixup,
-		.ignore_suspend = 1,
 		.nonatomic = true,
 		.dpcm_playback = 1,
 		.dpcm_capture = 1,
@@ -1323,6 +1319,9 @@ static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
 static struct platform_driver snd_byt_rt5640_mc_driver = {
 	.driver = {
 		.name = "bytcr_rt5640",
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
+		.pm = &snd_soc_pm_ops,
+#endif
 	},
 	.probe = snd_byt_rt5640_mc_probe,
 };

sound/soc/intel/boards/bytcr_rt5651.c

@@ -601,8 +601,6 @@ static int byt_rt5651_init(struct snd_soc_pcm_runtime *runtime)
 		dev_err(card->dev, "unable to add card controls\n");
 		return ret;
 	}
-	snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
-	snd_soc_dapm_ignore_suspend(&card->dapm, "Speaker");
 
 	if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) {
 		/*
@@ -775,7 +773,6 @@ static struct snd_soc_dai_link byt_rt5651_dais[] = {
 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 						| SND_SOC_DAIFMT_CBS_CFS,
 		.be_hw_params_fixup = byt_rt5651_codec_fixup,
-		.ignore_suspend = 1,
 		.nonatomic = true,
 		.dpcm_playback = 1,
 		.dpcm_capture = 1,
@@ -1100,6 +1097,9 @@ static int snd_byt_rt5651_mc_probe(struct platform_device *pdev)
 static struct platform_driver snd_byt_rt5651_mc_driver = {
 	.driver = {
 		.name = "bytcr_rt5651",
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
+		.pm = &snd_soc_pm_ops,
+#endif
 	},
 	.probe = snd_byt_rt5651_mc_probe,
 };

sound/soc/intel/boards/cht_bsw_max98090_ti.c

@@ -616,6 +616,9 @@ static int snd_cht_mc_remove(struct platform_device *pdev)
 static struct platform_driver snd_cht_mc_driver = {
 	.driver = {
 		.name = "cht-bsw-max98090",
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
+		.pm = &snd_soc_pm_ops,
+#endif
 	},
 	.probe = snd_cht_mc_probe,
 	.remove = snd_cht_mc_remove,

sound/soc/intel/boards/cht_bsw_nau8824.c

@@ -282,6 +282,9 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
 static struct platform_driver snd_cht_mc_driver = {
 	.driver = {
 		.name = "cht-bsw-nau8824",
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
+		.pm = &snd_soc_pm_ops,
+#endif
 	},
 	.probe = snd_cht_mc_probe,
 };

sound/soc/intel/boards/cht_bsw_rt5645.c

@@ -680,6 +680,9 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
 static struct platform_driver snd_cht_mc_driver = {
 	.driver = {
 		.name = "cht-bsw-rt5645",
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
+		.pm = &snd_soc_pm_ops,
+#endif
 	},
 	.probe = snd_cht_mc_probe,
 };

sound/soc/intel/boards/cht_bsw_rt5672.c

@@ -459,6 +459,9 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
 static struct platform_driver snd_cht_mc_driver = {
 	.driver = {
 		.name = "cht-bsw-rt5672",
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
+		.pm = &snd_soc_pm_ops,
+#endif
 	},
 	.probe = snd_cht_mc_probe,
 };

sound/soc/sof/intel/byt.c

@@ -160,13 +160,31 @@ static void byt_dump(struct snd_sof_dev *sdev, u32 flags)
 static irqreturn_t byt_irq_handler(int irq, void *context)
 {
 	struct snd_sof_dev *sdev = context;
-	u64 isr;
+	u64 ipcx, ipcd;
 	int ret = IRQ_NONE;
 
-	/* Interrupt arrived, check src */
+	ipcx = snd_sof_dsp_read64(sdev, BYT_DSP_BAR, SHIM_IPCX);
-	isr = snd_sof_dsp_read64(sdev, BYT_DSP_BAR, SHIM_ISRX);
+	ipcd = snd_sof_dsp_read64(sdev, BYT_DSP_BAR, SHIM_IPCD);
-	if (isr & (SHIM_ISRX_DONE | SHIM_ISRX_BUSY))
+
+	if (ipcx & SHIM_BYT_IPCX_DONE) {
+
+		/* reply message from DSP, Mask Done interrupt first */
+		snd_sof_dsp_update_bits64_unlocked(sdev, BYT_DSP_BAR,
+						   SHIM_IMRX,
+						   SHIM_IMRX_DONE,
+						   SHIM_IMRX_DONE);
 		ret = IRQ_WAKE_THREAD;
+	}
+
+	if (ipcd & SHIM_BYT_IPCD_BUSY) {
+
+		/* new message from DSP, Mask Busy interrupt first */
+		snd_sof_dsp_update_bits64_unlocked(sdev, BYT_DSP_BAR,
+						   SHIM_IMRX,
+						   SHIM_IMRX_BUSY,
+						   SHIM_IMRX_BUSY);
+		ret = IRQ_WAKE_THREAD;
+	}
 
 	return ret;
 }
@@ -175,19 +193,12 @@ static irqreturn_t byt_irq_thread(int irq, void *context)
 {
 	struct snd_sof_dev *sdev = context;
 	u64 ipcx, ipcd;
-	u64 imrx;
 
-	imrx = snd_sof_dsp_read64(sdev, BYT_DSP_BAR, SHIM_IMRX);
 	ipcx = snd_sof_dsp_read64(sdev, BYT_DSP_BAR, SHIM_IPCX);
+	ipcd = snd_sof_dsp_read64(sdev, BYT_DSP_BAR, SHIM_IPCD);
 
 	/* reply message from DSP */
-	if (ipcx & SHIM_BYT_IPCX_DONE &&
+	if (ipcx & SHIM_BYT_IPCX_DONE) {
-	    !(imrx & SHIM_IMRX_DONE)) {
-		/* Mask Done interrupt before first */
-		snd_sof_dsp_update_bits64_unlocked(sdev, BYT_DSP_BAR,
-						   SHIM_IMRX,
-						   SHIM_IMRX_DONE,
-						   SHIM_IMRX_DONE);
 
 		spin_lock_irq(&sdev->ipc_lock);
 
@@ -207,14 +218,7 @@ static irqreturn_t byt_irq_thread(int irq, void *context)
 	}
 
 	/* new message from DSP */
-	ipcd = snd_sof_dsp_read64(sdev, BYT_DSP_BAR, SHIM_IPCD);
+	if (ipcd & SHIM_BYT_IPCD_BUSY) {
-	if (ipcd & SHIM_BYT_IPCD_BUSY &&
-	    !(imrx & SHIM_IMRX_BUSY)) {
-		/* Mask Busy interrupt before return */
-		snd_sof_dsp_update_bits64_unlocked(sdev, BYT_DSP_BAR,
-						   SHIM_IMRX,
-						   SHIM_IMRX_BUSY,
-						   SHIM_IMRX_BUSY);
 
 		/* Handle messages from DSP Core */
 		if ((ipcd & SOF_IPC_PANIC_MAGIC_MASK) == SOF_IPC_PANIC_MAGIC) {
@@ -232,6 +236,10 @@ static irqreturn_t byt_irq_thread(int irq, void *context)
 
 static int byt_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
 {
+	/* unmask and prepare to receive Done interrupt */
+	snd_sof_dsp_update_bits64_unlocked(sdev, BYT_DSP_BAR, SHIM_IMRX,
+					   SHIM_IMRX_DONE, 0);
+
 	/* send the message */
 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
 			  msg->msg_size);
@@ -297,7 +305,7 @@ static void byt_host_done(struct snd_sof_dev *sdev)
 					   SHIM_BYT_IPCD_DONE,
 					   SHIM_BYT_IPCD_DONE);
 
-	/* unmask busy interrupt */
+	/* unmask and prepare to receive next new message */
 	snd_sof_dsp_update_bits64_unlocked(sdev, BYT_DSP_BAR, SHIM_IMRX,
 					   SHIM_IMRX_BUSY, 0);
 }
@@ -307,10 +315,6 @@ static void byt_dsp_done(struct snd_sof_dev *sdev)
 	/* clear DONE bit - tell DSP we have completed */
 	snd_sof_dsp_update_bits64_unlocked(sdev, BYT_DSP_BAR, SHIM_IPCX,
 					   SHIM_BYT_IPCX_DONE, 0);
-
-	/* unmask Done interrupt */
-	snd_sof_dsp_update_bits64_unlocked(sdev, BYT_DSP_BAR, SHIM_IMRX,
-					   SHIM_IMRX_DONE, 0);
 }
 
 /*
@@ -428,6 +432,42 @@ static void byt_set_mach_params(const struct snd_soc_acpi_mach *mach,
 	mach_params->platform = dev_name(dev);
 }
 
+static void byt_reset_dsp_disable_int(struct snd_sof_dev *sdev)
+{
+	/* Disable Interrupt from both sides */
+	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRX, 0x3, 0x3);
+	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRD, 0x3, 0x3);
+
+	/* Put DSP into reset, set reset vector */
+	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_CSR,
+				  SHIM_BYT_CSR_RST | SHIM_BYT_CSR_VECTOR_SEL,
+				  SHIM_BYT_CSR_RST | SHIM_BYT_CSR_VECTOR_SEL);
+}
+
+static int byt_suspend(struct snd_sof_dev *sdev, u32 target_state)
+{
+	byt_reset_dsp_disable_int(sdev);
+
+	return 0;
+}
+
+static int byt_resume(struct snd_sof_dev *sdev)
+{
+	/* enable BUSY and disable DONE Interrupt by default */
+	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRX,
+				  SHIM_IMRX_BUSY | SHIM_IMRX_DONE,
+				  SHIM_IMRX_DONE);
+
+	return 0;
+}
+
+static int byt_remove(struct snd_sof_dev *sdev)
+{
+	byt_reset_dsp_disable_int(sdev);
+
+	return 0;
+}
+
 /* Baytrail DAIs */
 static struct snd_soc_dai_driver byt_dai[] = {
 {
@@ -567,9 +607,10 @@ static int tangier_pci_probe(struct snd_sof_dev *sdev)
 		return ret;
 	}
 
-	/* enable Interrupt from both sides */
+	/* enable BUSY and disable DONE Interrupt by default */
-	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRX, 0x3, 0x0);
+	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRX,
-	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRD, 0x3, 0x0);
+				  SHIM_IMRX_BUSY | SHIM_IMRX_DONE,
+				  SHIM_IMRX_DONE);
 
 	/* set default mailbox offset for FW ready message */
 	sdev->dsp_box.offset = MBOX_OFFSET;
@@ -769,9 +810,10 @@ static int byt_acpi_probe(struct snd_sof_dev *sdev)
 		return ret;
 	}
 
-	/* enable Interrupt from both sides */
+	/* enable BUSY and disable DONE Interrupt by default */
-	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRX, 0x3, 0x0);
+	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRX,
-	snd_sof_dsp_update_bits64(sdev, BYT_DSP_BAR, SHIM_IMRD, 0x3, 0x0);
+				  SHIM_IMRX_BUSY | SHIM_IMRX_DONE,
+				  SHIM_IMRX_DONE);
 
 	/* set default mailbox offset for FW ready message */
 	sdev->dsp_box.offset = MBOX_OFFSET;
@@ -783,6 +825,7 @@ static int byt_acpi_probe(struct snd_sof_dev *sdev)
 const struct snd_sof_dsp_ops sof_byt_ops = {
 	/* device init */
 	.probe		= byt_acpi_probe,
+	.remove		= byt_remove,
 
 	/* DSP core boot / reset */
 	.run		= byt_run,
@@ -832,6 +875,10 @@ const struct snd_sof_dsp_ops sof_byt_ops = {
 	/*Firmware loading */
 	.load_firmware	= snd_sof_load_firmware_memcpy,
 
+	/* PM */
+	.suspend = byt_suspend,
+	.resume = byt_resume,
+
 	/* DAI drivers */
 	.drv = byt_dai,
 	.num_drv = 3, /* we have only 3 SSPs on byt*/
@@ -857,6 +904,7 @@ EXPORT_SYMBOL_NS(byt_chip_info, SND_SOC_SOF_BAYTRAIL);
 const struct snd_sof_dsp_ops sof_cht_ops = {
 	/* device init */
 	.probe		= byt_acpi_probe,
+	.remove		= byt_remove,
 
 	/* DSP core boot / reset */
 	.run		= byt_run,
@@ -906,6 +954,10 @@ const struct snd_sof_dsp_ops sof_cht_ops = {
 	/*Firmware loading */
 	.load_firmware	= snd_sof_load_firmware_memcpy,
 
+	/* PM */
+	.suspend = byt_suspend,
+	.resume = byt_resume,
+
 	/* DAI drivers */
 	.drv = byt_dai,
 	/* all 6 SSPs may be available for cherrytrail */

sound/soc/sof/ipc.c

@@ -335,21 +335,20 @@ int sof_ipc_tx_message_no_pm(struct snd_sof_ipc *ipc, u32 header,
 EXPORT_SYMBOL(sof_ipc_tx_message_no_pm);
 
 /* handle reply message from DSP */
-int snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id)
+void snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id)
 {
 	struct snd_sof_ipc_msg *msg = &sdev->ipc->msg;
 
 	if (msg->ipc_complete) {
-		dev_err(sdev->dev, "error: no reply expected, received 0x%x",
+		dev_dbg(sdev->dev,
+			"no reply expected, received 0x%x, will be ignored",
 			msg_id);
-		return -EINVAL;
+		return;
 	}
 
 	/* wake up and return the error if we have waiters on this message ? */
 	msg->ipc_complete = true;
 	wake_up(&msg->waitq);
-
-	return 0;
 }
 EXPORT_SYMBOL(snd_sof_ipc_reply);
 

sound/soc/sof/pm.c

@@ -114,8 +114,12 @@ static int sof_resume(struct device *dev, bool runtime_resume)
 		return ret;
 	}
 
-	/* Nothing further to do if resuming from a low-power D0 substate */
+	/*
-	if (!runtime_resume && old_state == SOF_DSP_PM_D0)
+	 * Nothing further to be done for platforms that support the low power
+	 * D0 substate.
+	 */
+	if (!runtime_resume && sof_ops(sdev)->set_power_state &&
+	    old_state == SOF_DSP_PM_D0)
 		return 0;
 
 	sdev->fw_state = SOF_FW_BOOT_PREPARE;

sound/soc/sof/sof-priv.h

@@ -480,7 +480,7 @@ int snd_sof_fw_parse_ext_data(struct snd_sof_dev *sdev, u32 bar, u32 offset);
  */
 struct snd_sof_ipc *snd_sof_ipc_init(struct snd_sof_dev *sdev);
 void snd_sof_ipc_free(struct snd_sof_dev *sdev);
-int snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id);
+void snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id);
 void snd_sof_ipc_msgs_rx(struct snd_sof_dev *sdev);
 int snd_sof_ipc_stream_pcm_params(struct snd_sof_dev *sdev,
 				  struct sof_ipc_pcm_params *params);