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>

1 files changed, 251 insertions, 0 deletions

diff --git a/kernel/sound/soc/intel/skylake/skl-sst-cldma.h b/kernel/sound/soc/intel/skylake/skl-sst-cldma.h
new file mode 100644
index 000000000..99e4c86b6
--- /dev/null
+++ b/kernel/sound/soc/intel/skylake/skl-sst-cldma.h
@@ -0,0 +1,251 @@
+/*
+ * Intel Code Loader DMA support
+ *
+ * Copyright (C) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#ifndef SKL_SST_CLDMA_H_
+#define SKL_SST_CLDMA_H_
+
+#define FW_CL_STREAM_NUMBER		0x1
+
+#define DMA_ADDRESS_128_BITS_ALIGNMENT	7
+#define BDL_ALIGN(x)			(x >> DMA_ADDRESS_128_BITS_ALIGNMENT)
+
+#define SKL_ADSPIC_CL_DMA			0x2
+#define SKL_ADSPIS_CL_DMA			0x2
+#define SKL_CL_DMA_SD_INT_DESC_ERR		0x10 /* Descriptor error interrupt */
+#define SKL_CL_DMA_SD_INT_FIFO_ERR		0x08 /* FIFO error interrupt */
+#define SKL_CL_DMA_SD_INT_COMPLETE		0x04 /* Buffer completion interrupt */
+
+/* Intel HD Audio Code Loader DMA Registers */
+
+#define HDA_ADSP_LOADER_BASE		0x80
+
+/* Stream Registers */
+#define SKL_ADSP_REG_CL_SD_CTL			(HDA_ADSP_LOADER_BASE + 0x00)
+#define SKL_ADSP_REG_CL_SD_STS			(HDA_ADSP_LOADER_BASE + 0x03)
+#define SKL_ADSP_REG_CL_SD_LPIB			(HDA_ADSP_LOADER_BASE + 0x04)
+#define SKL_ADSP_REG_CL_SD_CBL			(HDA_ADSP_LOADER_BASE + 0x08)
+#define SKL_ADSP_REG_CL_SD_LVI			(HDA_ADSP_LOADER_BASE + 0x0c)
+#define SKL_ADSP_REG_CL_SD_FIFOW		(HDA_ADSP_LOADER_BASE + 0x0e)
+#define SKL_ADSP_REG_CL_SD_FIFOSIZE		(HDA_ADSP_LOADER_BASE + 0x10)
+#define SKL_ADSP_REG_CL_SD_FORMAT		(HDA_ADSP_LOADER_BASE + 0x12)
+#define SKL_ADSP_REG_CL_SD_FIFOL		(HDA_ADSP_LOADER_BASE + 0x14)
+#define SKL_ADSP_REG_CL_SD_BDLPL		(HDA_ADSP_LOADER_BASE + 0x18)
+#define SKL_ADSP_REG_CL_SD_BDLPU		(HDA_ADSP_LOADER_BASE + 0x1c)
+
+/* CL: Software Position Based FIFO Capability Registers */
+#define SKL_ADSP_REG_CL_SPBFIFO			(HDA_ADSP_LOADER_BASE + 0x20)
+#define SKL_ADSP_REG_CL_SPBFIFO_SPBFCH		(SKL_ADSP_REG_CL_SPBFIFO + 0x0)
+#define SKL_ADSP_REG_CL_SPBFIFO_SPBFCCTL	(SKL_ADSP_REG_CL_SPBFIFO + 0x4)
+#define SKL_ADSP_REG_CL_SPBFIFO_SPIB		(SKL_ADSP_REG_CL_SPBFIFO + 0x8)
+#define SKL_ADSP_REG_CL_SPBFIFO_MAXFIFOS	(SKL_ADSP_REG_CL_SPBFIFO + 0xc)
+
+/* CL: Stream Descriptor x Control */
+
+/* Stream Reset */
+#define CL_SD_CTL_SRST_SHIFT		0
+#define CL_SD_CTL_SRST_MASK		(1 << CL_SD_CTL_SRST_SHIFT)
+#define CL_SD_CTL_SRST(x)		\
+			((x << CL_SD_CTL_SRST_SHIFT) & CL_SD_CTL_SRST_MASK)
+
+/* Stream Run */
+#define CL_SD_CTL_RUN_SHIFT		1
+#define CL_SD_CTL_RUN_MASK		(1 << CL_SD_CTL_RUN_SHIFT)
+#define CL_SD_CTL_RUN(x)		\
+			((x << CL_SD_CTL_RUN_SHIFT) & CL_SD_CTL_RUN_MASK)
+
+/* Interrupt On Completion Enable */
+#define CL_SD_CTL_IOCE_SHIFT		2
+#define CL_SD_CTL_IOCE_MASK		(1 << CL_SD_CTL_IOCE_SHIFT)
+#define CL_SD_CTL_IOCE(x)		\
+			((x << CL_SD_CTL_IOCE_SHIFT) & CL_SD_CTL_IOCE_MASK)
+
+/* FIFO Error Interrupt Enable */
+#define CL_SD_CTL_FEIE_SHIFT		3
+#define CL_SD_CTL_FEIE_MASK		(1 << CL_SD_CTL_FEIE_SHIFT)
+#define CL_SD_CTL_FEIE(x)		\
+			((x << CL_SD_CTL_FEIE_SHIFT) & CL_SD_CTL_FEIE_MASK)
+
+/* Descriptor Error Interrupt Enable */
+#define CL_SD_CTL_DEIE_SHIFT		4
+#define CL_SD_CTL_DEIE_MASK		(1 << CL_SD_CTL_DEIE_SHIFT)
+#define CL_SD_CTL_DEIE(x)		\
+			((x << CL_SD_CTL_DEIE_SHIFT) & CL_SD_CTL_DEIE_MASK)
+
+/* FIFO Limit Change */
+#define CL_SD_CTL_FIFOLC_SHIFT		5
+#define CL_SD_CTL_FIFOLC_MASK		(1 << CL_SD_CTL_FIFOLC_SHIFT)
+#define CL_SD_CTL_FIFOLC(x)		\
+			((x << CL_SD_CTL_FIFOLC_SHIFT) & CL_SD_CTL_FIFOLC_MASK)
+
+/* Stripe Control */
+#define CL_SD_CTL_STRIPE_SHIFT		16
+#define CL_SD_CTL_STRIPE_MASK		(0x3 << CL_SD_CTL_STRIPE_SHIFT)
+#define CL_SD_CTL_STRIPE(x)		\
+			((x << CL_SD_CTL_STRIPE_SHIFT) & CL_SD_CTL_STRIPE_MASK)
+
+/* Traffic Priority */
+#define CL_SD_CTL_TP_SHIFT		18
+#define CL_SD_CTL_TP_MASK		(1 << CL_SD_CTL_TP_SHIFT)
+#define CL_SD_CTL_TP(x)			\
+			((x << CL_SD_CTL_TP_SHIFT) & CL_SD_CTL_TP_MASK)
+
+/* Bidirectional Direction Control */
+#define CL_SD_CTL_DIR_SHIFT		19
+#define CL_SD_CTL_DIR_MASK		(1 << CL_SD_CTL_DIR_SHIFT)
+#define CL_SD_CTL_DIR(x)		\
+			((x << CL_SD_CTL_DIR_SHIFT) & CL_SD_CTL_DIR_MASK)
+
+/* Stream Number */
+#define CL_SD_CTL_STRM_SHIFT		20
+#define CL_SD_CTL_STRM_MASK		(0xf << CL_SD_CTL_STRM_SHIFT)
+#define CL_SD_CTL_STRM(x)		\
+			((x << CL_SD_CTL_STRM_SHIFT) & CL_SD_CTL_STRM_MASK)
+
+/* CL: Stream Descriptor x Status */
+
+/* Buffer Completion Interrupt Status */
+#define CL_SD_STS_BCIS(x)		CL_SD_CTL_IOCE(x)
+
+/* FIFO Error */
+#define CL_SD_STS_FIFOE(x)		CL_SD_CTL_FEIE(x)
+
+/* Descriptor Error */
+#define CL_SD_STS_DESE(x)		CL_SD_CTL_DEIE(x)
+
+/* FIFO Ready */
+#define CL_SD_STS_FIFORDY(x)	CL_SD_CTL_FIFOLC(x)
+
+
+/* CL: Stream Descriptor x Last Valid Index */
+#define CL_SD_LVI_SHIFT			0
+#define CL_SD_LVI_MASK			(0xff << CL_SD_LVI_SHIFT)
+#define CL_SD_LVI(x)			((x << CL_SD_LVI_SHIFT) & CL_SD_LVI_MASK)
+
+/* CL: Stream Descriptor x FIFO Eviction Watermark */
+#define CL_SD_FIFOW_SHIFT		0
+#define CL_SD_FIFOW_MASK		(0x7 << CL_SD_FIFOW_SHIFT)
+#define CL_SD_FIFOW(x)			\
+			((x << CL_SD_FIFOW_SHIFT) & CL_SD_FIFOW_MASK)
+
+/* CL: Stream Descriptor x Buffer Descriptor List Pointer Lower Base Address */
+
+/* Protect Bits */
+#define CL_SD_BDLPLBA_PROT_SHIFT	0
+#define CL_SD_BDLPLBA_PROT_MASK		(1 << CL_SD_BDLPLBA_PROT_SHIFT)
+#define CL_SD_BDLPLBA_PROT(x)		\
+		((x << CL_SD_BDLPLBA_PROT_SHIFT) & CL_SD_BDLPLBA_PROT_MASK)
+
+/* Buffer Descriptor List Lower Base Address */
+#define CL_SD_BDLPLBA_SHIFT		7
+#define CL_SD_BDLPLBA_MASK		(0x1ffffff << CL_SD_BDLPLBA_SHIFT)
+#define CL_SD_BDLPLBA(x)		\
+	((BDL_ALIGN(lower_32_bits(x)) << CL_SD_BDLPLBA_SHIFT) & CL_SD_BDLPLBA_MASK)
+
+/* Buffer Descriptor List Upper Base Address */
+#define CL_SD_BDLPUBA_SHIFT		0
+#define CL_SD_BDLPUBA_MASK		(0xffffffff << CL_SD_BDLPUBA_SHIFT)
+#define CL_SD_BDLPUBA(x)		\
+		((upper_32_bits(x) << CL_SD_BDLPUBA_SHIFT) & CL_SD_BDLPUBA_MASK)
+
+/*
+ * Code Loader - Software Position Based FIFO
+ * Capability Registers x Software Position Based FIFO Header
+ */
+
+/* Next Capability Pointer */
+#define CL_SPBFIFO_SPBFCH_PTR_SHIFT	0
+#define CL_SPBFIFO_SPBFCH_PTR_MASK	(0xff << CL_SPBFIFO_SPBFCH_PTR_SHIFT)
+#define CL_SPBFIFO_SPBFCH_PTR(x)	\
+		((x << CL_SPBFIFO_SPBFCH_PTR_SHIFT) & CL_SPBFIFO_SPBFCH_PTR_MASK)
+
+/* Capability Identifier */
+#define CL_SPBFIFO_SPBFCH_ID_SHIFT	16
+#define CL_SPBFIFO_SPBFCH_ID_MASK	(0xfff << CL_SPBFIFO_SPBFCH_ID_SHIFT)
+#define CL_SPBFIFO_SPBFCH_ID(x)		\
+		((x << CL_SPBFIFO_SPBFCH_ID_SHIFT) & CL_SPBFIFO_SPBFCH_ID_MASK)
+
+/* Capability Version */
+#define CL_SPBFIFO_SPBFCH_VER_SHIFT	28
+#define CL_SPBFIFO_SPBFCH_VER_MASK	(0xf << CL_SPBFIFO_SPBFCH_VER_SHIFT)
+#define CL_SPBFIFO_SPBFCH_VER(x)	\
+	((x << CL_SPBFIFO_SPBFCH_VER_SHIFT) & CL_SPBFIFO_SPBFCH_VER_MASK)
+
+/* Software Position in Buffer Enable */
+#define CL_SPBFIFO_SPBFCCTL_SPIBE_SHIFT	0
+#define CL_SPBFIFO_SPBFCCTL_SPIBE_MASK	(1 << CL_SPBFIFO_SPBFCCTL_SPIBE_SHIFT)
+#define CL_SPBFIFO_SPBFCCTL_SPIBE(x)	\
+	((x << CL_SPBFIFO_SPBFCCTL_SPIBE_SHIFT) & CL_SPBFIFO_SPBFCCTL_SPIBE_MASK)
+
+/* SST IPC SKL defines */
+#define SKL_WAIT_TIMEOUT		500	/* 500 msec */
+#define SKL_MAX_BUFFER_SIZE		(32 * PAGE_SIZE)
+
+enum skl_cl_dma_wake_states {
+	SKL_CL_DMA_STATUS_NONE = 0,
+	SKL_CL_DMA_BUF_COMPLETE,
+	SKL_CL_DMA_ERR,	/* TODO: Expand the error states */
+};
+
+struct sst_dsp;
+
+struct skl_cl_dev_ops {
+	void (*cl_setup_bdle)(struct sst_dsp *ctx,
+			struct snd_dma_buffer *dmab_data,
+			u32 **bdlp, int size, int with_ioc);
+	void (*cl_setup_controller)(struct sst_dsp *ctx,
+			struct snd_dma_buffer *dmab_bdl,
+			unsigned int max_size, u32 page_count);
+	void (*cl_setup_spb)(struct sst_dsp  *ctx,
+			unsigned int size, bool enable);
+	void (*cl_cleanup_spb)(struct sst_dsp  *ctx);
+	void (*cl_trigger)(struct sst_dsp  *ctx, bool enable);
+	void (*cl_cleanup_controller)(struct sst_dsp  *ctx);
+	int (*cl_copy_to_dmabuf)(struct sst_dsp *ctx,
+			const void *bin, u32 size);
+	void (*cl_stop_dma)(struct sst_dsp *ctx);
+};
+
+/**
+ * skl_cl_dev - holds information for code loader dma transfer
+ *
+ * @dmab_data: buffer pointer
+ * @dmab_bdl: buffer descriptor list
+ * @bufsize: ring buffer size
+ * @frags: Last valid buffer descriptor index in the BDL
+ * @curr_spib_pos: Current position in ring buffer
+ * @dma_buffer_offset: dma buffer offset
+ * @ops: operations supported on CL dma
+ * @wait_queue: wait queue to wake for wake event
+ * @wake_status: DMA wake status
+ * @wait_condition: condition to wait on wait queue
+ * @cl_dma_lock: for synchronized access to cldma
+ */
+struct skl_cl_dev {
+	struct snd_dma_buffer dmab_data;
+	struct snd_dma_buffer dmab_bdl;
+
+	unsigned int bufsize;
+	unsigned int frags;
+
+	unsigned int curr_spib_pos;
+	unsigned int dma_buffer_offset;
+	struct skl_cl_dev_ops ops;
+
+	wait_queue_head_t wait_queue;
+	int wake_status;
+	bool wait_condition;
+};
+
+#endif /* SKL_SST_CLDMA_H_ */