[PATCH 0/8] ASoC: SOF: IPC updates

[PATCH 0/8] ASoC: SOF: IPC updates

[Pierre-Louis Bossart]

Align the Intel IPC code with the recommended hardware sequences
instead of confusing ones, remove useless command and clean-up
interface definition.

Daniel Baluta (1):
  ASoC: SOF: Do not send cmd via SHIM register

Pierre-Louis Bossart (6):
  ASoC: SOF: Intel: cnl-ipc: read all IPC registers first
  ASoC: SOF: Intel: cnl-ipc: move code around for clarity
  ASoC: SOF: Intel: cnl-ipc: re-enable IPC IRQ at end of handler
  ASoC: SOF: Intel: hda-ipc: read all IPC registers first
  ASoC: SOF: Intel: hda-ipc: re-enable IPC IRQ at end of handler
  ASoC: SOF: Intel: ipc: don't check for HIPCCTL register value

Slawomir Blauciak (1):
  ASoC: SOF: ipc: replace fw ready bitfield with explicit bit ordering

 include/sound/sof/info.h      | 20 ++++++-------
 sound/soc/sof/intel/byt.c     |  5 +---
 sound/soc/sof/intel/cnl.c     | 56 +++++++++++++++++------------------
 sound/soc/sof/intel/hda-ipc.c | 43 +++++++++++++--------------
 sound/soc/sof/ipc.c           | 11 ++++---
 5 files changed, 67 insertions(+), 68 deletions(-)

-- 
2.20.1

[PATCH 1/8] ASoC: SOF: Do not send cmd via SHIM register

[Pierre-Louis Bossart]

From: Daniel Baluta <daniel.baluta@gmail.com>

We use shim registers only to notify the other
side that a message was sent. The actual information
for the message is transmitted via mailbox.

cmd information inside shim register is not used by
the DSP, so we remove it to avoid confusion.

Signed-off-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/intel/byt.c     | 5 +----
 sound/soc/sof/intel/cnl.c     | 4 +---
 sound/soc/sof/intel/hda-ipc.c | 4 +---
 3 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/sound/soc/sof/intel/byt.c b/sound/soc/sof/intel/byt.c
index 9e4c07eb889b..8765eedfcf54 100644
--- a/sound/soc/sof/intel/byt.c
+++ b/sound/soc/sof/intel/byt.c
@@ -373,13 +373,10 @@ 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)
 {
-	u64 cmd = msg->header;
-
 	/* send the message */
 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
 			  msg->msg_size);
-	snd_sof_dsp_write64(sdev, BYT_DSP_BAR, SHIM_IPCX,
-			    cmd | SHIM_BYT_IPCX_BUSY);
+	snd_sof_dsp_write64(sdev, BYT_DSP_BAR, SHIM_IPCX, SHIM_BYT_IPCX_BUSY);
 
 	return 0;
 }
diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index e59d180da7e2..fd86269b5037 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -151,13 +151,11 @@ static void cnl_ipc_dsp_done(struct snd_sof_dev *sdev)
 static int cnl_ipc_send_msg(struct snd_sof_dev *sdev,
 			    struct snd_sof_ipc_msg *msg)
 {
-	u32 cmd = msg->header;
-
 	/* send the message */
 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
 			  msg->msg_size);
 	snd_sof_dsp_write(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDR,
-			  cmd | CNL_DSP_REG_HIPCIDR_BUSY);
+			  CNL_DSP_REG_HIPCIDR_BUSY);
 
 	return 0;
 }
diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c
index 51b285103394..728dd1e075a4 100644
--- a/sound/soc/sof/intel/hda-ipc.c
+++ b/sound/soc/sof/intel/hda-ipc.c
@@ -56,13 +56,11 @@ static void hda_dsp_ipc_dsp_done(struct snd_sof_dev *sdev)
 
 int hda_dsp_ipc_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
 {
-	u32 cmd = msg->header;
-
 	/* send IPC message to DSP */
 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
 			  msg->msg_size);
 	snd_sof_dsp_write(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCI,
-			  cmd | HDA_DSP_REG_HIPCI_BUSY);
+			  HDA_DSP_REG_HIPCI_BUSY);
 
 	return 0;
 }
-- 
2.20.1

[PATCH 2/8] ASoC: SOF: Intel: cnl-ipc: read all IPC registers first

[Pierre-Louis Bossart]

Align with hardware recommended sequences, and read all IPC registers
before doing any other actions. Playing with BUSY and DONE bits may
invalidate values.

The values read may not actually be necessary but at least this
provides a snapshot of the IPC registers with no consistency issues.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/intel/cnl.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index fd86269b5037..1fae75fc313f 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -42,6 +42,8 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 	hipcida = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDA);
 	hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCCTL);
 	hipctdr = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCTDR);
+	hipctdd = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCTDD);
+	hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDR);
 
 	/* reenable IPC interrupt */
 	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
@@ -50,8 +52,6 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 	/* reply message from DSP */
 	if (hipcida & CNL_DSP_REG_HIPCIDA_DONE &&
 	    hipcctl & CNL_DSP_REG_HIPCCTL_DONE) {
-		hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
-					 CNL_DSP_REG_HIPCIDR);
 		msg_ext = hipci & CNL_DSP_REG_HIPCIDR_MSG_MASK;
 		msg = hipcida & CNL_DSP_REG_HIPCIDA_MSG_MASK;
 
@@ -84,8 +84,6 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 
 	/* new message from DSP */
 	if (hipctdr & CNL_DSP_REG_HIPCTDR_BUSY) {
-		hipctdd = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
-					   CNL_DSP_REG_HIPCTDD);
 		msg = hipctdr & CNL_DSP_REG_HIPCTDR_MSG_MASK;
 		msg_ext = hipctdd & CNL_DSP_REG_HIPCTDD_MSG_MASK;
 
-- 
2.20.1

[PATCH 3/8] ASoC: SOF: Intel: cnl-ipc: move code around for clarity

[Pierre-Louis Bossart]

Move all register access to cnl_ipc_host_done()
No functionality change.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/intel/cnl.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index 1fae75fc313f..4ecba1d8ec7f 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -99,15 +99,6 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 			snd_sof_ipc_msgs_rx(sdev);
 		}
 
-		/*
-		 * clear busy interrupt to tell dsp controller this
-		 * interrupt has been accepted, not trigger it again
-		 */
-		snd_sof_dsp_update_bits_forced(sdev, HDA_DSP_BAR,
-					       CNL_DSP_REG_HIPCTDR,
-					       CNL_DSP_REG_HIPCTDR_BUSY,
-					       CNL_DSP_REG_HIPCTDR_BUSY);
-
 		cnl_ipc_host_done(sdev);
 
 		ret = IRQ_HANDLED;
@@ -118,6 +109,14 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 
 static void cnl_ipc_host_done(struct snd_sof_dev *sdev)
 {
+	/*
+	 * clear busy interrupt to tell dsp controller this
+	 * interrupt has been accepted, not trigger it again
+	 */
+	snd_sof_dsp_update_bits_forced(sdev, HDA_DSP_BAR,
+				       CNL_DSP_REG_HIPCTDR,
+				       CNL_DSP_REG_HIPCTDR_BUSY,
+				       CNL_DSP_REG_HIPCTDR_BUSY);
 	/*
 	 * set done bit to ack dsp the msg has been
 	 * processed and send reply msg to dsp
-- 
2.20.1

[PATCH 4/8] ASoC: SOF: Intel: cnl-ipc: re-enable IPC IRQ at end of handler

[Pierre-Louis Bossart]

Align with Skylake driver and enable the IRQ at end of handler,
instead of at beginning.

Also add an error log if we have nothing to do in this handler.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/intel/cnl.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index 4ecba1d8ec7f..b794a881542f 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -37,7 +37,7 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 	u32 hipctdd;
 	u32 msg;
 	u32 msg_ext;
-	irqreturn_t ret = IRQ_NONE;
+	bool ipc_irq = false;
 
 	hipcida = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDA);
 	hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCCTL);
@@ -45,10 +45,6 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 	hipctdd = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCTDD);
 	hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDR);
 
-	/* reenable IPC interrupt */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
-				HDA_DSP_ADSPIC_IPC, HDA_DSP_ADSPIC_IPC);
-
 	/* reply message from DSP */
 	if (hipcida & CNL_DSP_REG_HIPCIDA_DONE &&
 	    hipcctl & CNL_DSP_REG_HIPCCTL_DONE) {
@@ -79,7 +75,7 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 
 		spin_unlock_irq(&sdev->ipc_lock);
 
-		ret = IRQ_HANDLED;
+		ipc_irq = true;
 	}
 
 	/* new message from DSP */
@@ -101,10 +97,22 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 
 		cnl_ipc_host_done(sdev);
 
-		ret = IRQ_HANDLED;
+		ipc_irq = true;
+	}
+
+	if (!ipc_irq) {
+		/*
+		 * This interrupt is not shared so no need to return IRQ_NONE.
+		 */
+		dev_err_ratelimited(sdev->dev,
+				    "error: nothing to do in IRQ thread\n");
 	}
 
-	return ret;
+	/* re-enable IPC interrupt */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
+				HDA_DSP_ADSPIC_IPC, HDA_DSP_ADSPIC_IPC);
+
+	return IRQ_HANDLED;
 }
 
 static void cnl_ipc_host_done(struct snd_sof_dev *sdev)
-- 
2.20.1

[PATCH 5/8] ASoC: SOF: Intel: hda-ipc: read all IPC registers first

[Pierre-Louis Bossart]

Align with hardware recommended sequences, and read all IPC registers
before doing any other actions. Playing with BUSY and DONE bits may
invalidate values.

The values read may not actually be necessary but at least this
provides a snapshot of the IPC registers with no consistency issues.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/intel/hda-ipc.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c
index 728dd1e075a4..1f01897fa6e3 100644
--- a/sound/soc/sof/intel/hda-ipc.c
+++ b/sound/soc/sof/intel/hda-ipc.c
@@ -145,6 +145,8 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 				  HDA_DSP_REG_HIPCIE);
 	hipct = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCT);
 	hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCCTL);
+	hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCI);
+	hipcte = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCTE);
 
 	/* reenable IPC interrupt */
 	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
@@ -153,8 +155,6 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	/* is this a reply message from the DSP */
 	if (hipcie & HDA_DSP_REG_HIPCIE_DONE &&
 	    hipcctl & HDA_DSP_REG_HIPCCTL_DONE) {
-		hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
-					 HDA_DSP_REG_HIPCI);
 		msg = hipci & HDA_DSP_REG_HIPCI_MSG_MASK;
 		msg_ext = hipcie & HDA_DSP_REG_HIPCIE_MSG_MASK;
 
@@ -202,9 +202,6 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	/* is this a new message from DSP */
 	if (hipct & HDA_DSP_REG_HIPCT_BUSY &&
 	    hipcctl & HDA_DSP_REG_HIPCCTL_BUSY) {
-
-		hipcte = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
-					  HDA_DSP_REG_HIPCTE);
 		msg = hipct & HDA_DSP_REG_HIPCT_MSG_MASK;
 		msg_ext = hipcte & HDA_DSP_REG_HIPCTE_MSG_MASK;
 
-- 
2.20.1

[PATCH 6/8] ASoC: SOF: Intel: hda-ipc: re-enable IPC IRQ at end of handler

[Pierre-Louis Bossart]

Align with Skylake driver and enable the IRQ at end of handler,
instead of at beginning.

Also add an error log if we have nothing to do in this handler.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/intel/hda-ipc.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c
index 1f01897fa6e3..04972f27ffe6 100644
--- a/sound/soc/sof/intel/hda-ipc.c
+++ b/sound/soc/sof/intel/hda-ipc.c
@@ -131,7 +131,6 @@ static bool hda_dsp_ipc_is_sof(uint32_t msg)
 irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 {
 	struct snd_sof_dev *sdev = context;
-	irqreturn_t ret = IRQ_NONE;
 	u32 hipci;
 	u32 hipcie;
 	u32 hipct;
@@ -139,6 +138,7 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	u32 hipcctl;
 	u32 msg;
 	u32 msg_ext;
+	bool ipc_irq = false;
 
 	/* read IPC status */
 	hipcie = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
@@ -148,10 +148,6 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCI);
 	hipcte = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCTE);
 
-	/* reenable IPC interrupt */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
-				HDA_DSP_ADSPIC_IPC, HDA_DSP_ADSPIC_IPC);
-
 	/* is this a reply message from the DSP */
 	if (hipcie & HDA_DSP_REG_HIPCIE_DONE &&
 	    hipcctl & HDA_DSP_REG_HIPCCTL_DONE) {
@@ -196,7 +192,7 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 
 		spin_unlock_irq(&sdev->ipc_lock);
 
-		ret = IRQ_HANDLED;
+		ipc_irq = true;
 	}
 
 	/* is this a new message from DSP */
@@ -225,10 +221,22 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 
 		hda_dsp_ipc_host_done(sdev);
 
-		ret = IRQ_HANDLED;
+		ipc_irq = true;
 	}
 
-	return ret;
+	if (!ipc_irq) {
+		/*
+		 * This interrupt is not shared so no need to return IRQ_NONE.
+		 */
+		dev_err_ratelimited(sdev->dev,
+				    "error: nothing to do in IRQ thread\n");
+	}
+
+	/* re-enable IPC interrupt */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
+				HDA_DSP_ADSPIC_IPC, HDA_DSP_ADSPIC_IPC);
+
+	return IRQ_HANDLED;
 }
 
 /* is this IRQ for ADSP ? - we only care about IPC here */
-- 
2.20.1

[PATCH 7/8] ASoC: SOF: Intel: ipc: don't check for HIPCCTL register value

[Pierre-Louis Bossart]

The HIPCCTL register controls the IPC interrupts. It can be set or
cleared to mask or enable these interrupts, but it makes no sense to
read and test its fields in an interrupt (which can only executed if
its fields are set).

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/intel/cnl.c     | 5 +----
 sound/soc/sof/intel/hda-ipc.c | 8 ++------
 2 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index b794a881542f..9a4927b6b6ae 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -31,7 +31,6 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 {
 	struct snd_sof_dev *sdev = context;
 	u32 hipci;
-	u32 hipcctl;
 	u32 hipcida;
 	u32 hipctdr;
 	u32 hipctdd;
@@ -40,14 +39,12 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 	bool ipc_irq = false;
 
 	hipcida = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDA);
-	hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCCTL);
 	hipctdr = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCTDR);
 	hipctdd = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCTDD);
 	hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDR);
 
 	/* reply message from DSP */
-	if (hipcida & CNL_DSP_REG_HIPCIDA_DONE &&
-	    hipcctl & CNL_DSP_REG_HIPCCTL_DONE) {
+	if (hipcida & CNL_DSP_REG_HIPCIDA_DONE) {
 		msg_ext = hipci & CNL_DSP_REG_HIPCIDR_MSG_MASK;
 		msg = hipcida & CNL_DSP_REG_HIPCIDA_MSG_MASK;
 
diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c
index 04972f27ffe6..50244b82600c 100644
--- a/sound/soc/sof/intel/hda-ipc.c
+++ b/sound/soc/sof/intel/hda-ipc.c
@@ -135,7 +135,6 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	u32 hipcie;
 	u32 hipct;
 	u32 hipcte;
-	u32 hipcctl;
 	u32 msg;
 	u32 msg_ext;
 	bool ipc_irq = false;
@@ -144,13 +143,11 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	hipcie = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
 				  HDA_DSP_REG_HIPCIE);
 	hipct = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCT);
-	hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCCTL);
 	hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCI);
 	hipcte = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCTE);
 
 	/* is this a reply message from the DSP */
-	if (hipcie & HDA_DSP_REG_HIPCIE_DONE &&
-	    hipcctl & HDA_DSP_REG_HIPCCTL_DONE) {
+	if (hipcie & HDA_DSP_REG_HIPCIE_DONE) {
 		msg = hipci & HDA_DSP_REG_HIPCI_MSG_MASK;
 		msg_ext = hipcie & HDA_DSP_REG_HIPCIE_MSG_MASK;
 
@@ -196,8 +193,7 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	}
 
 	/* is this a new message from DSP */
-	if (hipct & HDA_DSP_REG_HIPCT_BUSY &&
-	    hipcctl & HDA_DSP_REG_HIPCCTL_BUSY) {
+	if (hipct & HDA_DSP_REG_HIPCT_BUSY) {
 		msg = hipct & HDA_DSP_REG_HIPCT_MSG_MASK;
 		msg_ext = hipcte & HDA_DSP_REG_HIPCTE_MSG_MASK;
 
-- 
2.20.1

[PATCH 8/8] ASoC: SOF: ipc: replace fw ready bitfield with explicit bit ordering

[Pierre-Louis Bossart]

From: Slawomir Blauciak <slawomir.blauciak@linux.intel.com>

Previously the structure used bitfields, which do not guarantee bit
ordering.

This change makes sure the order is clearly defined.  It also renames
and repurposes the field for general use.

Signed-off-by: Slawomir Blauciak <slawomir.blauciak@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 include/sound/sof/info.h | 20 ++++++++++----------
 sound/soc/sof/ipc.c      | 11 +++++++----
 2 files changed, 17 insertions(+), 14 deletions(-)

diff --git a/include/sound/sof/info.h b/include/sound/sof/info.h
index 21dae04d8183..16528d2b4a50 100644
--- a/include/sound/sof/info.h
+++ b/include/sound/sof/info.h
@@ -18,6 +18,14 @@
 
 #define SOF_IPC_MAX_ELEMS	16
 
+/*
+ * Firmware boot info flag bits (64-bit)
+ */
+#define SOF_IPC_INFO_BUILD		BIT(0)
+#define SOF_IPC_INFO_LOCKS		BIT(1)
+#define SOF_IPC_INFO_LOCKSV		BIT(2)
+#define SOF_IPC_INFO_GDB		BIT(3)
+
 /* extended data types that can be appended onto end of sof_ipc_fw_ready */
 enum sof_ipc_ext_data {
 	SOF_IPC_EXT_DMA_BUFFER = 0,
@@ -49,16 +57,8 @@ struct sof_ipc_fw_ready {
 	uint32_t hostbox_size;
 	struct sof_ipc_fw_version version;
 
-	/* Miscellaneous debug flags showing build/debug features enabled */
-	union {
-		uint64_t reserved;
-		struct {
-			uint64_t build:1;
-			uint64_t locks:1;
-			uint64_t locks_verbose:1;
-			uint64_t gdb:1;
-		} bits;
-	} debug;
+	/* Miscellaneous flags */
+	uint64_t flags;
 
 	/* reserved for future use */
 	uint32_t reserved[4];
diff --git a/sound/soc/sof/ipc.c b/sound/soc/sof/ipc.c
index 4327b4718116..996ac19986b7 100644
--- a/sound/soc/sof/ipc.c
+++ b/sound/soc/sof/ipc.c
@@ -764,16 +764,19 @@ int snd_sof_ipc_valid(struct snd_sof_dev *sdev)
 		}
 	}
 
-	if (ready->debug.bits.build) {
+	if (ready->flags & SOF_IPC_INFO_BUILD) {
 		dev_info(sdev->dev,
 			 "Firmware debug build %d on %s-%s - options:\n"
 			 " GDB: %s\n"
 			 " lock debug: %s\n"
 			 " lock vdebug: %s\n",
 			 v->build, v->date, v->time,
-			 ready->debug.bits.gdb ? "enabled" : "disabled",
-			 ready->debug.bits.locks ? "enabled" : "disabled",
-			 ready->debug.bits.locks_verbose ? "enabled" : "disabled");
+			 ready->flags & SOF_IPC_INFO_GDB ?
+				"enabled" : "disabled",
+			 ready->flags & SOF_IPC_INFO_LOCKS ?
+				"enabled" : "disabled",
+			 ready->flags & SOF_IPC_INFO_LOCKSV ?
+				"enabled" : "disabled");
 	}
 
 	/* copy the fw_version into debugfs at first boot */
-- 
2.20.1

Applied "ASoC: SOF: Intel: ipc: don't check for HIPCCTL register value" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: Intel: ipc: don't check for HIPCCTL register value

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.3

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 09a173a63fbb89762712a4ec48722ba98d4e1bcc Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Mon, 3 Jun 2019 11:20:31 -0500
Subject: [PATCH] ASoC: SOF: Intel: ipc: don't check for HIPCCTL register value

The HIPCCTL register controls the IPC interrupts. It can be set or
cleared to mask or enable these interrupts, but it makes no sense to
read and test its fields in an interrupt (which can only executed if
its fields are set).

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/intel/cnl.c     | 5 +----
 sound/soc/sof/intel/hda-ipc.c | 8 ++------
 2 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index b794a881542f..9a4927b6b6ae 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -31,7 +31,6 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 {
 	struct snd_sof_dev *sdev = context;
 	u32 hipci;
-	u32 hipcctl;
 	u32 hipcida;
 	u32 hipctdr;
 	u32 hipctdd;
@@ -40,14 +39,12 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 	bool ipc_irq = false;
 
 	hipcida = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDA);
-	hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCCTL);
 	hipctdr = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCTDR);
 	hipctdd = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCTDD);
 	hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDR);
 
 	/* reply message from DSP */
-	if (hipcida & CNL_DSP_REG_HIPCIDA_DONE &&
-	    hipcctl & CNL_DSP_REG_HIPCCTL_DONE) {
+	if (hipcida & CNL_DSP_REG_HIPCIDA_DONE) {
 		msg_ext = hipci & CNL_DSP_REG_HIPCIDR_MSG_MASK;
 		msg = hipcida & CNL_DSP_REG_HIPCIDA_MSG_MASK;
 
diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c
index 04972f27ffe6..50244b82600c 100644
--- a/sound/soc/sof/intel/hda-ipc.c
+++ b/sound/soc/sof/intel/hda-ipc.c
@@ -135,7 +135,6 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	u32 hipcie;
 	u32 hipct;
 	u32 hipcte;
-	u32 hipcctl;
 	u32 msg;
 	u32 msg_ext;
 	bool ipc_irq = false;
@@ -144,13 +143,11 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	hipcie = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
 				  HDA_DSP_REG_HIPCIE);
 	hipct = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCT);
-	hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCCTL);
 	hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCI);
 	hipcte = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCTE);
 
 	/* is this a reply message from the DSP */
-	if (hipcie & HDA_DSP_REG_HIPCIE_DONE &&
-	    hipcctl & HDA_DSP_REG_HIPCCTL_DONE) {
+	if (hipcie & HDA_DSP_REG_HIPCIE_DONE) {
 		msg = hipci & HDA_DSP_REG_HIPCI_MSG_MASK;
 		msg_ext = hipcie & HDA_DSP_REG_HIPCIE_MSG_MASK;
 
@@ -196,8 +193,7 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	}
 
 	/* is this a new message from DSP */
-	if (hipct & HDA_DSP_REG_HIPCT_BUSY &&
-	    hipcctl & HDA_DSP_REG_HIPCCTL_BUSY) {
+	if (hipct & HDA_DSP_REG_HIPCT_BUSY) {
 		msg = hipct & HDA_DSP_REG_HIPCT_MSG_MASK;
 		msg_ext = hipcte & HDA_DSP_REG_HIPCTE_MSG_MASK;
 
-- 
2.20.1

Applied "ASoC: SOF: Intel: hda-ipc: re-enable IPC IRQ at end of handler" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: Intel: hda-ipc: re-enable IPC IRQ at end of handler

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.3

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 66e65339b824a597a8c750ddf993af17c847dce6 Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Mon, 3 Jun 2019 11:20:30 -0500
Subject: [PATCH] ASoC: SOF: Intel: hda-ipc: re-enable IPC IRQ at end of
 handler

Align with Skylake driver and enable the IRQ at end of handler,
instead of at beginning.

Also add an error log if we have nothing to do in this handler.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/intel/hda-ipc.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c
index 1f01897fa6e3..04972f27ffe6 100644
--- a/sound/soc/sof/intel/hda-ipc.c
+++ b/sound/soc/sof/intel/hda-ipc.c
@@ -131,7 +131,6 @@ static bool hda_dsp_ipc_is_sof(uint32_t msg)
 irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 {
 	struct snd_sof_dev *sdev = context;
-	irqreturn_t ret = IRQ_NONE;
 	u32 hipci;
 	u32 hipcie;
 	u32 hipct;
@@ -139,6 +138,7 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	u32 hipcctl;
 	u32 msg;
 	u32 msg_ext;
+	bool ipc_irq = false;
 
 	/* read IPC status */
 	hipcie = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
@@ -148,10 +148,6 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCI);
 	hipcte = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCTE);
 
-	/* reenable IPC interrupt */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
-				HDA_DSP_ADSPIC_IPC, HDA_DSP_ADSPIC_IPC);
-
 	/* is this a reply message from the DSP */
 	if (hipcie & HDA_DSP_REG_HIPCIE_DONE &&
 	    hipcctl & HDA_DSP_REG_HIPCCTL_DONE) {
@@ -196,7 +192,7 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 
 		spin_unlock_irq(&sdev->ipc_lock);
 
-		ret = IRQ_HANDLED;
+		ipc_irq = true;
 	}
 
 	/* is this a new message from DSP */
@@ -225,10 +221,22 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 
 		hda_dsp_ipc_host_done(sdev);
 
-		ret = IRQ_HANDLED;
+		ipc_irq = true;
 	}
 
-	return ret;
+	if (!ipc_irq) {
+		/*
+		 * This interrupt is not shared so no need to return IRQ_NONE.
+		 */
+		dev_err_ratelimited(sdev->dev,
+				    "error: nothing to do in IRQ thread\n");
+	}
+
+	/* re-enable IPC interrupt */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
+				HDA_DSP_ADSPIC_IPC, HDA_DSP_ADSPIC_IPC);
+
+	return IRQ_HANDLED;
 }
 
 /* is this IRQ for ADSP ? - we only care about IPC here */
-- 
2.20.1

Applied "ASoC: SOF: Intel: hda-ipc: read all IPC registers first" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: Intel: hda-ipc: read all IPC registers first

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.3

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 5dbeb8287421984a09c92a79c503f8bd41cf3fe7 Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Mon, 3 Jun 2019 11:20:29 -0500
Subject: [PATCH] ASoC: SOF: Intel: hda-ipc: read all IPC registers first

Align with hardware recommended sequences, and read all IPC registers
before doing any other actions. Playing with BUSY and DONE bits may
invalidate values.

The values read may not actually be necessary but at least this
provides a snapshot of the IPC registers with no consistency issues.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/intel/hda-ipc.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c
index 728dd1e075a4..1f01897fa6e3 100644
--- a/sound/soc/sof/intel/hda-ipc.c
+++ b/sound/soc/sof/intel/hda-ipc.c
@@ -145,6 +145,8 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 				  HDA_DSP_REG_HIPCIE);
 	hipct = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCT);
 	hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCCTL);
+	hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCI);
+	hipcte = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCTE);
 
 	/* reenable IPC interrupt */
 	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
@@ -153,8 +155,6 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	/* is this a reply message from the DSP */
 	if (hipcie & HDA_DSP_REG_HIPCIE_DONE &&
 	    hipcctl & HDA_DSP_REG_HIPCCTL_DONE) {
-		hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
-					 HDA_DSP_REG_HIPCI);
 		msg = hipci & HDA_DSP_REG_HIPCI_MSG_MASK;
 		msg_ext = hipcie & HDA_DSP_REG_HIPCIE_MSG_MASK;
 
@@ -202,9 +202,6 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context)
 	/* is this a new message from DSP */
 	if (hipct & HDA_DSP_REG_HIPCT_BUSY &&
 	    hipcctl & HDA_DSP_REG_HIPCCTL_BUSY) {
-
-		hipcte = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
-					  HDA_DSP_REG_HIPCTE);
 		msg = hipct & HDA_DSP_REG_HIPCT_MSG_MASK;
 		msg_ext = hipcte & HDA_DSP_REG_HIPCTE_MSG_MASK;
 
-- 
2.20.1

Applied "ASoC: SOF: Intel: cnl-ipc: re-enable IPC IRQ at end of handler" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: Intel: cnl-ipc: re-enable IPC IRQ at end of handler

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.3

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 3f58521bc81455bdfec2a44febf25ace8988a47f Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Mon, 3 Jun 2019 11:20:28 -0500
Subject: [PATCH] ASoC: SOF: Intel: cnl-ipc: re-enable IPC IRQ at end of
 handler

Align with Skylake driver and enable the IRQ at end of handler,
instead of at beginning.

Also add an error log if we have nothing to do in this handler.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/intel/cnl.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index 4ecba1d8ec7f..b794a881542f 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -37,7 +37,7 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 	u32 hipctdd;
 	u32 msg;
 	u32 msg_ext;
-	irqreturn_t ret = IRQ_NONE;
+	bool ipc_irq = false;
 
 	hipcida = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDA);
 	hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCCTL);
@@ -45,10 +45,6 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 	hipctdd = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCTDD);
 	hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDR);
 
-	/* reenable IPC interrupt */
-	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
-				HDA_DSP_ADSPIC_IPC, HDA_DSP_ADSPIC_IPC);
-
 	/* reply message from DSP */
 	if (hipcida & CNL_DSP_REG_HIPCIDA_DONE &&
 	    hipcctl & CNL_DSP_REG_HIPCCTL_DONE) {
@@ -79,7 +75,7 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 
 		spin_unlock_irq(&sdev->ipc_lock);
 
-		ret = IRQ_HANDLED;
+		ipc_irq = true;
 	}
 
 	/* new message from DSP */
@@ -101,10 +97,22 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 
 		cnl_ipc_host_done(sdev);
 
-		ret = IRQ_HANDLED;
+		ipc_irq = true;
+	}
+
+	if (!ipc_irq) {
+		/*
+		 * This interrupt is not shared so no need to return IRQ_NONE.
+		 */
+		dev_err_ratelimited(sdev->dev,
+				    "error: nothing to do in IRQ thread\n");
 	}
 
-	return ret;
+	/* re-enable IPC interrupt */
+	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
+				HDA_DSP_ADSPIC_IPC, HDA_DSP_ADSPIC_IPC);
+
+	return IRQ_HANDLED;
 }
 
 static void cnl_ipc_host_done(struct snd_sof_dev *sdev)
-- 
2.20.1

Applied "ASoC: SOF: Intel: cnl-ipc: move code around for clarity" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: Intel: cnl-ipc: move code around for clarity

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.3

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 ddbe9223393e4d067f010de65a05c9a6cb7790c1 Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Mon, 3 Jun 2019 11:20:27 -0500
Subject: [PATCH] ASoC: SOF: Intel: cnl-ipc: move code around for clarity

Move all register access to cnl_ipc_host_done()
No functionality change.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/intel/cnl.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index 1fae75fc313f..4ecba1d8ec7f 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -99,15 +99,6 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 			snd_sof_ipc_msgs_rx(sdev);
 		}
 
-		/*
-		 * clear busy interrupt to tell dsp controller this
-		 * interrupt has been accepted, not trigger it again
-		 */
-		snd_sof_dsp_update_bits_forced(sdev, HDA_DSP_BAR,
-					       CNL_DSP_REG_HIPCTDR,
-					       CNL_DSP_REG_HIPCTDR_BUSY,
-					       CNL_DSP_REG_HIPCTDR_BUSY);
-
 		cnl_ipc_host_done(sdev);
 
 		ret = IRQ_HANDLED;
@@ -118,6 +109,14 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 
 static void cnl_ipc_host_done(struct snd_sof_dev *sdev)
 {
+	/*
+	 * clear busy interrupt to tell dsp controller this
+	 * interrupt has been accepted, not trigger it again
+	 */
+	snd_sof_dsp_update_bits_forced(sdev, HDA_DSP_BAR,
+				       CNL_DSP_REG_HIPCTDR,
+				       CNL_DSP_REG_HIPCTDR_BUSY,
+				       CNL_DSP_REG_HIPCTDR_BUSY);
 	/*
 	 * set done bit to ack dsp the msg has been
 	 * processed and send reply msg to dsp
-- 
2.20.1

Applied "ASoC: SOF: Intel: cnl-ipc: read all IPC registers first" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: Intel: cnl-ipc: read all IPC registers first

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.3

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 c24b1b7279398c9140a8130b4c20db0c06d5dfc4 Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Mon, 3 Jun 2019 11:20:26 -0500
Subject: [PATCH] ASoC: SOF: Intel: cnl-ipc: read all IPC registers first

Align with hardware recommended sequences, and read all IPC registers
before doing any other actions. Playing with BUSY and DONE bits may
invalidate values.

The values read may not actually be necessary but at least this
provides a snapshot of the IPC registers with no consistency issues.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/intel/cnl.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index fd86269b5037..1fae75fc313f 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -42,6 +42,8 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 	hipcida = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDA);
 	hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCCTL);
 	hipctdr = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCTDR);
+	hipctdd = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCTDD);
+	hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDR);
 
 	/* reenable IPC interrupt */
 	snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC,
@@ -50,8 +52,6 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 	/* reply message from DSP */
 	if (hipcida & CNL_DSP_REG_HIPCIDA_DONE &&
 	    hipcctl & CNL_DSP_REG_HIPCCTL_DONE) {
-		hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
-					 CNL_DSP_REG_HIPCIDR);
 		msg_ext = hipci & CNL_DSP_REG_HIPCIDR_MSG_MASK;
 		msg = hipcida & CNL_DSP_REG_HIPCIDA_MSG_MASK;
 
@@ -84,8 +84,6 @@ static irqreturn_t cnl_ipc_irq_thread(int irq, void *context)
 
 	/* new message from DSP */
 	if (hipctdr & CNL_DSP_REG_HIPCTDR_BUSY) {
-		hipctdd = snd_sof_dsp_read(sdev, HDA_DSP_BAR,
-					   CNL_DSP_REG_HIPCTDD);
 		msg = hipctdr & CNL_DSP_REG_HIPCTDR_MSG_MASK;
 		msg_ext = hipctdd & CNL_DSP_REG_HIPCTDD_MSG_MASK;
 
-- 
2.20.1

Applied "ASoC: SOF: Do not send cmd via SHIM register" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: Do not send cmd via SHIM register

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.3

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 6fbbc18ead0f4f64a722f7e325046e5860d2c52b Mon Sep 17 00:00:00 2001
From: Daniel Baluta <daniel.baluta@gmail.com>
Date: Mon, 3 Jun 2019 11:20:25 -0500
Subject: [PATCH] ASoC: SOF: Do not send cmd via SHIM register

We use shim registers only to notify the other
side that a message was sent. The actual information
for the message is transmitted via mailbox.

cmd information inside shim register is not used by
the DSP, so we remove it to avoid confusion.

Signed-off-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sof/intel/byt.c     | 5 +----
 sound/soc/sof/intel/cnl.c     | 4 +---
 sound/soc/sof/intel/hda-ipc.c | 4 +---
 3 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/sound/soc/sof/intel/byt.c b/sound/soc/sof/intel/byt.c
index 9e4c07eb889b..8765eedfcf54 100644
--- a/sound/soc/sof/intel/byt.c
+++ b/sound/soc/sof/intel/byt.c
@@ -373,13 +373,10 @@ 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)
 {
-	u64 cmd = msg->header;
-
 	/* send the message */
 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
 			  msg->msg_size);
-	snd_sof_dsp_write64(sdev, BYT_DSP_BAR, SHIM_IPCX,
-			    cmd | SHIM_BYT_IPCX_BUSY);
+	snd_sof_dsp_write64(sdev, BYT_DSP_BAR, SHIM_IPCX, SHIM_BYT_IPCX_BUSY);
 
 	return 0;
 }
diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c
index e59d180da7e2..fd86269b5037 100644
--- a/sound/soc/sof/intel/cnl.c
+++ b/sound/soc/sof/intel/cnl.c
@@ -151,13 +151,11 @@ static void cnl_ipc_dsp_done(struct snd_sof_dev *sdev)
 static int cnl_ipc_send_msg(struct snd_sof_dev *sdev,
 			    struct snd_sof_ipc_msg *msg)
 {
-	u32 cmd = msg->header;
-
 	/* send the message */
 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
 			  msg->msg_size);
 	snd_sof_dsp_write(sdev, HDA_DSP_BAR, CNL_DSP_REG_HIPCIDR,
-			  cmd | CNL_DSP_REG_HIPCIDR_BUSY);
+			  CNL_DSP_REG_HIPCIDR_BUSY);
 
 	return 0;
 }
diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c
index 51b285103394..728dd1e075a4 100644
--- a/sound/soc/sof/intel/hda-ipc.c
+++ b/sound/soc/sof/intel/hda-ipc.c
@@ -56,13 +56,11 @@ static void hda_dsp_ipc_dsp_done(struct snd_sof_dev *sdev)
 
 int hda_dsp_ipc_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
 {
-	u32 cmd = msg->header;
-
 	/* send IPC message to DSP */
 	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
 			  msg->msg_size);
 	snd_sof_dsp_write(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCI,
-			  cmd | HDA_DSP_REG_HIPCI_BUSY);
+			  HDA_DSP_REG_HIPCI_BUSY);
 
 	return 0;
 }
-- 
2.20.1

Applied "ASoC: SOF: ipc: replace fw ready bitfield with explicit bit ordering" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: ipc: replace fw ready bitfield with explicit bit ordering

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.2

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 347d1c4b0779cbeabaebb9b8e9967afe28db22f1 Mon Sep 17 00:00:00 2001
From: Slawomir Blauciak <slawomir.blauciak@linux.intel.com>
Date: Mon, 3 Jun 2019 11:20:32 -0500
Subject: [PATCH] ASoC: SOF: ipc: replace fw ready bitfield with explicit bit
 ordering

Previously the structure used bitfields, which do not guarantee bit
ordering.

This change makes sure the order is clearly defined.  It also renames
and repurposes the field for general use.

Signed-off-by: Slawomir Blauciak <slawomir.blauciak@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 include/sound/sof/info.h | 20 ++++++++++----------
 sound/soc/sof/ipc.c      | 11 +++++++----
 2 files changed, 17 insertions(+), 14 deletions(-)

diff --git a/include/sound/sof/info.h b/include/sound/sof/info.h
index 21dae04d8183..16528d2b4a50 100644
--- a/include/sound/sof/info.h
+++ b/include/sound/sof/info.h
@@ -18,6 +18,14 @@
 
 #define SOF_IPC_MAX_ELEMS	16
 
+/*
+ * Firmware boot info flag bits (64-bit)
+ */
+#define SOF_IPC_INFO_BUILD		BIT(0)
+#define SOF_IPC_INFO_LOCKS		BIT(1)
+#define SOF_IPC_INFO_LOCKSV		BIT(2)
+#define SOF_IPC_INFO_GDB		BIT(3)
+
 /* extended data types that can be appended onto end of sof_ipc_fw_ready */
 enum sof_ipc_ext_data {
 	SOF_IPC_EXT_DMA_BUFFER = 0,
@@ -49,16 +57,8 @@ struct sof_ipc_fw_ready {
 	uint32_t hostbox_size;
 	struct sof_ipc_fw_version version;
 
-	/* Miscellaneous debug flags showing build/debug features enabled */
-	union {
-		uint64_t reserved;
-		struct {
-			uint64_t build:1;
-			uint64_t locks:1;
-			uint64_t locks_verbose:1;
-			uint64_t gdb:1;
-		} bits;
-	} debug;
+	/* Miscellaneous flags */
+	uint64_t flags;
 
 	/* reserved for future use */
 	uint32_t reserved[4];
diff --git a/sound/soc/sof/ipc.c b/sound/soc/sof/ipc.c
index 10304a90cf25..2414640a32d1 100644
--- a/sound/soc/sof/ipc.c
+++ b/sound/soc/sof/ipc.c
@@ -763,16 +763,19 @@ int snd_sof_ipc_valid(struct snd_sof_dev *sdev)
 		}
 	}
 
-	if (ready->debug.bits.build) {
+	if (ready->flags & SOF_IPC_INFO_BUILD) {
 		dev_info(sdev->dev,
 			 "Firmware debug build %d on %s-%s - options:\n"
 			 " GDB: %s\n"
 			 " lock debug: %s\n"
 			 " lock vdebug: %s\n",
 			 v->build, v->date, v->time,
-			 ready->debug.bits.gdb ? "enabled" : "disabled",
-			 ready->debug.bits.locks ? "enabled" : "disabled",
-			 ready->debug.bits.locks_verbose ? "enabled" : "disabled");
+			 ready->flags & SOF_IPC_INFO_GDB ?
+				"enabled" : "disabled",
+			 ready->flags & SOF_IPC_INFO_LOCKS ?
+				"enabled" : "disabled",
+			 ready->flags & SOF_IPC_INFO_LOCKSV ?
+				"enabled" : "disabled");
 	}
 
 	/* copy the fw_version into debugfs at first boot */
-- 
2.20.1