These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

8 files changed, 144 insertions, 20 deletions

diff --git a/kernel/sound/soc/intel/common/Makefile b/kernel/sound/soc/intel/common/Makefile
index f24154ca4..d9105584c 100644
--- a/kernel/sound/soc/intel/common/Makefile
+++ b/kernel/sound/soc/intel/common/Makefile
@@ -1,7 +1,11 @@
-snd-soc-sst-dsp-objs := sst-dsp.o sst-firmware.o
+snd-soc-sst-dsp-objs := sst-dsp.o
 snd-soc-sst-acpi-objs := sst-acpi.o
 snd-soc-sst-ipc-objs := sst-ipc.o
 
+ifneq ($(CONFIG_DW_DMAC_CORE),)
+snd-soc-sst-dsp-objs += sst-firmware.o
+endif
+
 obj-$(CONFIG_SND_SOC_INTEL_SST) += snd-soc-sst-dsp.o snd-soc-sst-ipc.o
 obj-$(CONFIG_SND_SOC_INTEL_SST_ACPI) += snd-soc-sst-acpi.o
 
diff --git a/kernel/sound/soc/intel/common/sst-acpi.c b/kernel/sound/soc/intel/common/sst-acpi.c
index 42f293f9c..67b6d3d52 100644
--- a/kernel/sound/soc/intel/common/sst-acpi.c
+++ b/kernel/sound/soc/intel/common/sst-acpi.c
@@ -263,7 +263,7 @@ static struct sst_acpi_desc sst_acpi_baytrail_desc = {
 	.resindex_dma_base = -1,
 };
 
-static struct acpi_device_id sst_acpi_match[] = {
+static const struct acpi_device_id sst_acpi_match[] = {
 	{ "INT33C8", (unsigned long)&sst_acpi_haswell_desc },
 	{ "INT3438", (unsigned long)&sst_acpi_broadwell_desc },
 	{ "80860F28", (unsigned long)&sst_acpi_baytrail_desc },
diff --git a/kernel/sound/soc/intel/common/sst-dsp-priv.h b/kernel/sound/soc/intel/common/sst-dsp-priv.h
index 396d54510..2151652d3 100644
--- a/kernel/sound/soc/intel/common/sst-dsp-priv.h
+++ b/kernel/sound/soc/intel/common/sst-dsp-priv.h
@@ -22,6 +22,8 @@
 #include <linux/interrupt.h>
 #include <linux/firmware.h>
 
+#include "../skylake/skl-sst-dsp.h"
+
 struct sst_mem_block;
 struct sst_module;
 struct sst_fw;
@@ -258,6 +260,8 @@ struct sst_mem_block {
  */
 struct sst_dsp {
 
+	/* Shared for all platforms */
+
 	/* runtime */
 	struct sst_dsp_device *sst_dev;
 	spinlock_t spinlock;	/* IPC locking */
@@ -268,10 +272,6 @@ struct sst_dsp {
 	int irq;
 	u32 id;
 
-	/* list of free and used ADSP memory blocks */
-	struct list_head used_block_list;
-	struct list_head free_block_list;
-
 	/* operations */
 	struct sst_ops *ops;
 
@@ -284,6 +284,12 @@ struct sst_dsp {
 	/* mailbox */
 	struct sst_mailbox mailbox;
 
+	/* HSW/Byt data */
+
+	/* list of free and used ADSP memory blocks */
+	struct list_head used_block_list;
+	struct list_head free_block_list;
+
 	/* SST FW files loaded and their modules */
 	struct list_head module_list;
 	struct list_head fw_list;
@@ -299,6 +305,16 @@ struct sst_dsp {
 	/* DMA FW loading */
 	struct sst_dma *dma;
 	bool fw_use_dma;
+
+	/* SKL data */
+
+	/* To allocate CL dma buffers */
+	struct skl_dsp_loader_ops dsp_ops;
+	struct skl_dsp_fw_ops fw_ops;
+	int sst_state;
+	struct skl_cl_dev cl_dev;
+	u32 intr_status;
+	const struct firmware *fw;
 };
 
 /* Size optimised DRAM/IRAM memcpy */
diff --git a/kernel/sound/soc/intel/common/sst-dsp.c b/kernel/sound/soc/intel/common/sst-dsp.c
index 64e94212d..c9452e02e 100644
--- a/kernel/sound/soc/intel/common/sst-dsp.c
+++ b/kernel/sound/soc/intel/common/sst-dsp.c
@@ -20,6 +20,7 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
+#include <linux/delay.h>
 
 #include "sst-dsp.h"
 #include "sst-dsp-priv.h"
@@ -196,6 +197,22 @@ int sst_dsp_shim_update_bits64_unlocked(struct sst_dsp *sst, u32 offset,
 }
 EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64_unlocked);
 
+/* This is for registers bits with attribute RWC */
+void sst_dsp_shim_update_bits_forced_unlocked(struct sst_dsp *sst, u32 offset,
+				u32 mask, u32 value)
+{
+	unsigned int old, new;
+	u32 ret;
+
+	ret = sst_dsp_shim_read_unlocked(sst, offset);
+
+	old = ret;
+	new = (old & (~mask)) | (value & mask);
+
+	sst_dsp_shim_write_unlocked(sst, offset, new);
+}
+EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits_forced_unlocked);
+
 int sst_dsp_shim_update_bits(struct sst_dsp *sst, u32 offset,
 				u32 mask, u32 value)
 {
@@ -222,6 +239,60 @@ int sst_dsp_shim_update_bits64(struct sst_dsp *sst, u32 offset,
 }
 EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64);
 
+/* This is for registers bits with attribute RWC */
+void sst_dsp_shim_update_bits_forced(struct sst_dsp *sst, u32 offset,
+				u32 mask, u32 value)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&sst->spinlock, flags);
+	sst_dsp_shim_update_bits_forced_unlocked(sst, offset, mask, value);
+	spin_unlock_irqrestore(&sst->spinlock, flags);
+}
+EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits_forced);
+
+int sst_dsp_register_poll(struct sst_dsp *ctx, u32 offset, u32 mask,
+			 u32 target, u32 timeout, char *operation)
+{
+	int time, ret;
+	u32 reg;
+	bool done = false;
+
+	/*
+	 * we will poll for couple of ms using mdelay, if not successful
+	 * then go to longer sleep using usleep_range
+	 */
+
+	/* check if set state successful */
+	for (time = 0; time < 5; time++) {
+		if ((sst_dsp_shim_read_unlocked(ctx, offset) & mask) == target) {
+			done = true;
+			break;
+		}
+		mdelay(1);
+	}
+
+	if (done ==  false) {
+		/* sleeping in 10ms steps so adjust timeout value */
+		timeout /= 10;
+
+		for (time = 0; time < timeout; time++) {
+			if ((sst_dsp_shim_read_unlocked(ctx, offset) & mask) == target)
+				break;
+
+			usleep_range(5000, 10000);
+		}
+	}
+
+	reg = sst_dsp_shim_read_unlocked(ctx, offset);
+	dev_info(ctx->dev, "FW Poll Status: reg=%#x %s %s\n", reg, operation,
+			(time < timeout) ? "successful" : "timedout");
+	ret = time < timeout ? 0 : -ETIME;
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(sst_dsp_register_poll);
+
 void sst_dsp_dump(struct sst_dsp *sst)
 {
 	if (sst->ops->dump)
@@ -349,6 +420,7 @@ void sst_dsp_inbox_read(struct sst_dsp *sst, void *message, size_t bytes)
 }
 EXPORT_SYMBOL_GPL(sst_dsp_inbox_read);
 
+#if IS_ENABLED(CONFIG_DW_DMAC_CORE)
 struct sst_dsp *sst_dsp_new(struct device *dev,
 	struct sst_dsp_device *sst_dev, struct sst_pdata *pdata)
 {
@@ -413,6 +485,7 @@ void sst_dsp_free(struct sst_dsp *sst)
 	sst_dma_free(sst->dma);
 }
 EXPORT_SYMBOL_GPL(sst_dsp_free);
+#endif
 
 /* Module information */
 MODULE_AUTHOR("Liam Girdwood");
diff --git a/kernel/sound/soc/intel/common/sst-dsp.h b/kernel/sound/soc/intel/common/sst-dsp.h
index 96aeb2556..859f0de00 100644
--- a/kernel/sound/soc/intel/common/sst-dsp.h
+++ b/kernel/sound/soc/intel/common/sst-dsp.h
@@ -216,10 +216,12 @@ struct sst_pdata {
 	void *dsp;
 };
 
+#if IS_ENABLED(CONFIG_DW_DMAC_CORE)
 /* Initialization */
 struct sst_dsp *sst_dsp_new(struct device *dev,
 	struct sst_dsp_device *sst_dev, struct sst_pdata *pdata);
 void sst_dsp_free(struct sst_dsp *sst);
+#endif
 
 /* SHIM Read / Write */
 void sst_dsp_shim_write(struct sst_dsp *sst, u32 offset, u32 value);
@@ -230,6 +232,8 @@ void sst_dsp_shim_write64(struct sst_dsp *sst, u32 offset, u64 value);
 u64 sst_dsp_shim_read64(struct sst_dsp *sst, u32 offset);
 int sst_dsp_shim_update_bits64(struct sst_dsp *sst, u32 offset,
 				u64 mask, u64 value);
+void sst_dsp_shim_update_bits_forced(struct sst_dsp *sst, u32 offset,
+				u32 mask, u32 value);
 
 /* SHIM Read / Write Unlocked for callers already holding sst lock */
 void sst_dsp_shim_write_unlocked(struct sst_dsp *sst, u32 offset, u32 value);
@@ -240,6 +244,8 @@ void sst_dsp_shim_write64_unlocked(struct sst_dsp *sst, u32 offset, u64 value);
 u64 sst_dsp_shim_read64_unlocked(struct sst_dsp *sst, u32 offset);
 int sst_dsp_shim_update_bits64_unlocked(struct sst_dsp *sst, u32 offset,
 					u64 mask, u64 value);
+void sst_dsp_shim_update_bits_forced_unlocked(struct sst_dsp *sst, u32 offset,
+				u32 mask, u32 value);
 
 /* Internal generic low-level SST IO functions - can be overidden */
 void sst_shim32_write(void __iomem *addr, u32 offset, u32 value);
@@ -278,6 +284,8 @@ void sst_dsp_inbox_read(struct sst_dsp *dsp, void *message, size_t bytes);
 void sst_dsp_outbox_write(struct sst_dsp *dsp, void *message, size_t bytes);
 void sst_dsp_outbox_read(struct sst_dsp *dsp, void *message, size_t bytes);
 void sst_dsp_mailbox_dump(struct sst_dsp *dsp, size_t bytes);
+int sst_dsp_register_poll(struct sst_dsp  *dsp, u32 offset, u32 mask,
+		 u32 expected_value, u32 timeout, char *operation);
 
 /* Debug */
 void sst_dsp_dump(struct sst_dsp *sst);
diff --git a/kernel/sound/soc/intel/common/sst-firmware.c b/kernel/sound/soc/intel/common/sst-firmware.c
index ebcca6dc4..1636a1eeb 100644
--- a/kernel/sound/soc/intel/common/sst-firmware.c
+++ b/kernel/sound/soc/intel/common/sst-firmware.c
@@ -26,7 +26,6 @@
 #include <linux/acpi.h>
 
 /* supported DMA engine drivers */
-#include <linux/platform_data/dma-dw.h>
 #include <linux/dma/dw.h>
 
 #include <asm/page.h>
@@ -169,12 +168,6 @@ err:
 	return ret;
 }
 
-static struct dw_dma_platform_data dw_pdata = {
-	.is_private = 1,
-	.chan_allocation_order = CHAN_ALLOCATION_ASCENDING,
-	.chan_priority = CHAN_PRIORITY_ASCENDING,
-};
-
 static struct dw_dma_chip *dw_probe(struct device *dev, struct resource *mem,
 	int irq)
 {
@@ -195,7 +188,8 @@ static struct dw_dma_chip *dw_probe(struct device *dev, struct resource *mem,
 		return ERR_PTR(err);
 
 	chip->dev = dev;
-	err = dw_dma_probe(chip, &dw_pdata);
+
+	err = dw_dma_probe(chip, NULL);
 	if (err)
 		return ERR_PTR(err);
 
diff --git a/kernel/sound/soc/intel/common/sst-ipc.c b/kernel/sound/soc/intel/common/sst-ipc.c
index 4b62a5538..a12c7bb08 100644
--- a/kernel/sound/soc/intel/common/sst-ipc.c
+++ b/kernel/sound/soc/intel/common/sst-ipc.c
@@ -129,11 +129,31 @@ static int msg_empty_list_init(struct sst_generic_ipc *ipc)
 		return -ENOMEM;
 
 	for (i = 0; i < IPC_EMPTY_LIST_SIZE; i++) {
+		ipc->msg[i].tx_data = kzalloc(ipc->tx_data_max_size, GFP_KERNEL);
+		if (ipc->msg[i].tx_data == NULL)
+			goto free_mem;
+
+		ipc->msg[i].rx_data = kzalloc(ipc->rx_data_max_size, GFP_KERNEL);
+		if (ipc->msg[i].rx_data == NULL) {
+			kfree(ipc->msg[i].tx_data);
+			goto free_mem;
+		}
+
 		init_waitqueue_head(&ipc->msg[i].waitq);
 		list_add(&ipc->msg[i].list, &ipc->empty_list);
 	}
 
 	return 0;
+
+free_mem:
+	while (i > 0) {
+		kfree(ipc->msg[i-1].tx_data);
+		kfree(ipc->msg[i-1].rx_data);
+		--i;
+	}
+	kfree(ipc->msg);
+
+	return -ENOMEM;
 }
 
 static void ipc_tx_msgs(struct kthread_work *work)
@@ -142,7 +162,6 @@ static void ipc_tx_msgs(struct kthread_work *work)
 		container_of(work, struct sst_generic_ipc, kwork);
 	struct ipc_message *msg;
 	unsigned long flags;
-	u64 ipcx;
 
 	spin_lock_irqsave(&ipc->dsp->spinlock, flags);
 
@@ -153,8 +172,8 @@ static void ipc_tx_msgs(struct kthread_work *work)
 
 	/* if the DSP is busy, we will TX messages after IRQ.
 	 * also postpone if we are in the middle of procesing completion irq*/
-	ipcx = sst_dsp_shim_read_unlocked(ipc->dsp, SST_IPCX);
-	if (ipcx & (SST_IPCX_BUSY | SST_IPCX_DONE)) {
+	if (ipc->ops.is_dsp_busy && ipc->ops.is_dsp_busy(ipc->dsp)) {
+		dev_dbg(ipc->dev, "ipc_tx_msgs dsp busy\n");
 		spin_unlock_irqrestore(&ipc->dsp->spinlock, flags);
 		return;
 	}
@@ -280,11 +299,18 @@ EXPORT_SYMBOL_GPL(sst_ipc_init);
 
 void sst_ipc_fini(struct sst_generic_ipc *ipc)
 {
+	int i;
+
 	if (ipc->tx_thread)
 		kthread_stop(ipc->tx_thread);
 
-	if (ipc->msg)
+	if (ipc->msg) {
+		for (i = 0; i < IPC_EMPTY_LIST_SIZE; i++) {
+			kfree(ipc->msg[i].tx_data);
+			kfree(ipc->msg[i].rx_data);
+		}
 		kfree(ipc->msg);
+	}
 }
 EXPORT_SYMBOL_GPL(sst_ipc_fini);
 
diff --git a/kernel/sound/soc/intel/common/sst-ipc.h b/kernel/sound/soc/intel/common/sst-ipc.h
index 125ea451a..ceb7e468a 100644
--- a/kernel/sound/soc/intel/common/sst-ipc.h
+++ b/kernel/sound/soc/intel/common/sst-ipc.h
@@ -32,9 +32,9 @@ struct ipc_message {
 	u64 header;
 
 	/* direction wrt host CPU */
-	char tx_data[IPC_MAX_MAILBOX_BYTES];
+	char *tx_data;
 	size_t tx_size;
-	char rx_data[IPC_MAX_MAILBOX_BYTES];
+	char *rx_data;
 	size_t rx_size;
 
 	wait_queue_head_t waitq;
@@ -51,6 +51,7 @@ struct sst_plat_ipc_ops {
 	void (*shim_dbg)(struct sst_generic_ipc *, const char *);
 	void (*tx_data_copy)(struct ipc_message *, char *, size_t);
 	u64  (*reply_msg_match)(u64 header, u64 *mask);
+	bool (*is_dsp_busy)(struct sst_dsp *dsp);
 };
 
 /* SST generic IPC data */
@@ -68,6 +69,8 @@ struct sst_generic_ipc {
 	struct kthread_work kwork;
 	bool pending;
 	struct ipc_message *msg;
+	int tx_data_max_size;
+	int rx_data_max_size;
 
 	struct sst_plat_ipc_ops ops;
 };