Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC specific changes from Arnd Bergmann:
 "These changes are all to SoC-specific code, a total of 33 branches on
  17 platforms were pulled into this.  Like last time, Renesas sh-mobile
  is now the platform with the most changes, followed by OMAP and
  EXYNOS.

  Two new platforms, TI Keystone and Rockchips RK3xxx are added in this
  branch, both containing almost no platform specific code at all, since
  they are using generic subsystem interfaces for clocks, pinctrl,
  interrupts etc.  The device drivers are getting merged through the
  respective subsystem maintainer trees.

  One more SoC (u300) is now multiplatform capable and several others
  (shmobile, exynos, msm, integrator, kirkwood, clps711x) are moving
  towards that goal with this series but need more work.

  Also noteworthy is the work on PCI here, which is traditionally part
  of the SoC specific code.  With the changes done by Thomas Petazzoni,
  we can now more easily have PCI host controller drivers as loadable
  modules and keep them separate from the platform code in
  drivers/pci/host.  This has already led to the discovery that three
  platforms (exynos, spear and imx) are actually using an identical PCIe
  host controller and will be able to share a driver once support for
  spear and imx is added."

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (480 commits)
  ARM: integrator: let pciv3 use mem/premem from device tree
  ARM: integrator: set local side PCI addresses right
  ARM: dts: Add pcie controller node for exynos5440-ssdk5440
  ARM: dts: Add pcie controller node for Samsung EXYNOS5440 SoC
  ARM: EXYNOS: Enable PCIe support for Exynos5440
  pci: Add PCIe driver for Samsung Exynos
  ARM: OMAP5: voltagedomain data: remove temporary OMAP4 voltage data
  ARM: keystone: Move CPU bringup code to dedicated asm file
  ARM: multiplatform: always pick one CPU type
  ARM: imx: select syscon for IMX6SL
  ARM: keystone: select ARM_ERRATA_798181 only for SMP
  ARM: imx: Synertronixx scb9328 needs to select SOC_IMX1
  ARM: OMAP2+: AM43x: resolve SMP related build error
  dmaengine: edma: enable build for AM33XX
  ARM: edma: Add EDMA crossbar event mux support
  ARM: edma: Add DT and runtime PM support to the private EDMA API
  dmaengine: edma: Add TI EDMA device tree binding
  arm: add basic support for Rockchip RK3066a boards
  arm: add debug uarts for rockchip rk29xx and rk3xxx series
  arm: Add basic clocks for Rockchip rk3066a SoCs
  ...

1 files changed, 183 insertions, 0 deletions

diff --git a/include/linux/platform_data/edma.h b/include/linux/platform_data/edma.h
new file mode 100644
index 0000000..57300fd
--- /dev/null
+++ b/include/linux/platform_data/edma.h
@@ -0,0 +1,183 @@
+/*
+ *  TI EDMA definitions
+ *
+ *  Copyright (C) 2006-2013 Texas Instruments.
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ */
+
+/*
+ * This EDMA3 programming framework exposes two basic kinds of resource:
+ *
+ *  Channel	Triggers transfers, usually from a hardware event but
+ *		also manually or by "chaining" from DMA completions.
+ *		Each channel is coupled to a Parameter RAM (PaRAM) slot.
+ *
+ *  Slot	Each PaRAM slot holds a DMA transfer descriptor (PaRAM
+ *		"set"), source and destination addresses, a link to a
+ *		next PaRAM slot (if any), options for the transfer, and
+ *		instructions for updating those addresses.  There are
+ *		more than twice as many slots as event channels.
+ *
+ * Each PaRAM set describes a sequence of transfers, either for one large
+ * buffer or for several discontiguous smaller buffers.  An EDMA transfer
+ * is driven only from a channel, which performs the transfers specified
+ * in its PaRAM slot until there are no more transfers.  When that last
+ * transfer completes, the "link" field may be used to reload the channel's
+ * PaRAM slot with a new transfer descriptor.
+ *
+ * The EDMA Channel Controller (CC) maps requests from channels into physical
+ * Transfer Controller (TC) requests when the channel triggers (by hardware
+ * or software events, or by chaining).  The two physical DMA channels provided
+ * by the TCs are thus shared by many logical channels.
+ *
+ * DaVinci hardware also has a "QDMA" mechanism which is not currently
+ * supported through this interface.  (DSP firmware uses it though.)
+ */
+
+#ifndef EDMA_H_
+#define EDMA_H_
+
+/* PaRAM slots are laid out like this */
+struct edmacc_param {
+	unsigned int opt;
+	unsigned int src;
+	unsigned int a_b_cnt;
+	unsigned int dst;
+	unsigned int src_dst_bidx;
+	unsigned int link_bcntrld;
+	unsigned int src_dst_cidx;
+	unsigned int ccnt;
+};
+
+/* fields in edmacc_param.opt */
+#define SAM		BIT(0)
+#define DAM		BIT(1)
+#define SYNCDIM		BIT(2)
+#define STATIC		BIT(3)
+#define EDMA_FWID	(0x07 << 8)
+#define TCCMODE		BIT(11)
+#define EDMA_TCC(t)	((t) << 12)
+#define TCINTEN		BIT(20)
+#define ITCINTEN	BIT(21)
+#define TCCHEN		BIT(22)
+#define ITCCHEN		BIT(23)
+
+/*ch_status paramater of callback function possible values*/
+#define DMA_COMPLETE 1
+#define DMA_CC_ERROR 2
+#define DMA_TC1_ERROR 3
+#define DMA_TC2_ERROR 4
+
+enum address_mode {
+	INCR = 0,
+	FIFO = 1
+};
+
+enum fifo_width {
+	W8BIT = 0,
+	W16BIT = 1,
+	W32BIT = 2,
+	W64BIT = 3,
+	W128BIT = 4,
+	W256BIT = 5
+};
+
+enum dma_event_q {
+	EVENTQ_0 = 0,
+	EVENTQ_1 = 1,
+	EVENTQ_2 = 2,
+	EVENTQ_3 = 3,
+	EVENTQ_DEFAULT = -1
+};
+
+enum sync_dimension {
+	ASYNC = 0,
+	ABSYNC = 1
+};
+
+#define EDMA_CTLR_CHAN(ctlr, chan)	(((ctlr) << 16) | (chan))
+#define EDMA_CTLR(i)			((i) >> 16)
+#define EDMA_CHAN_SLOT(i)		((i) & 0xffff)
+
+#define EDMA_CHANNEL_ANY		-1	/* for edma_alloc_channel() */
+#define EDMA_SLOT_ANY			-1	/* for edma_alloc_slot() */
+#define EDMA_CONT_PARAMS_ANY		 1001
+#define EDMA_CONT_PARAMS_FIXED_EXACT	 1002
+#define EDMA_CONT_PARAMS_FIXED_NOT_EXACT 1003
+
+#define EDMA_MAX_CC               2
+
+/* alloc/free DMA channels and their dedicated parameter RAM slots */
+int edma_alloc_channel(int channel,
+	void (*callback)(unsigned channel, u16 ch_status, void *data),
+	void *data, enum dma_event_q);
+void edma_free_channel(unsigned channel);
+
+/* alloc/free parameter RAM slots */
+int edma_alloc_slot(unsigned ctlr, int slot);
+void edma_free_slot(unsigned slot);
+
+/* alloc/free a set of contiguous parameter RAM slots */
+int edma_alloc_cont_slots(unsigned ctlr, unsigned int id, int slot, int count);
+int edma_free_cont_slots(unsigned slot, int count);
+
+/* calls that operate on part of a parameter RAM slot */
+void edma_set_src(unsigned slot, dma_addr_t src_port,
+				enum address_mode mode, enum fifo_width);
+void edma_set_dest(unsigned slot, dma_addr_t dest_port,
+				 enum address_mode mode, enum fifo_width);
+void edma_get_position(unsigned slot, dma_addr_t *src, dma_addr_t *dst);
+void edma_set_src_index(unsigned slot, s16 src_bidx, s16 src_cidx);
+void edma_set_dest_index(unsigned slot, s16 dest_bidx, s16 dest_cidx);
+void edma_set_transfer_params(unsigned slot, u16 acnt, u16 bcnt, u16 ccnt,
+		u16 bcnt_rld, enum sync_dimension sync_mode);
+void edma_link(unsigned from, unsigned to);
+void edma_unlink(unsigned from);
+
+/* calls that operate on an entire parameter RAM slot */
+void edma_write_slot(unsigned slot, const struct edmacc_param *params);
+void edma_read_slot(unsigned slot, struct edmacc_param *params);
+
+/* channel control operations */
+int edma_start(unsigned channel);
+void edma_stop(unsigned channel);
+void edma_clean_channel(unsigned channel);
+void edma_clear_event(unsigned channel);
+void edma_pause(unsigned channel);
+void edma_resume(unsigned channel);
+
+struct edma_rsv_info {
+
+	const s16	(*rsv_chans)[2];
+	const s16	(*rsv_slots)[2];
+};
+
+/* platform_data for EDMA driver */
+struct edma_soc_info {
+
+	/* how many dma resources of each type */
+	unsigned	n_channel;
+	unsigned	n_region;
+	unsigned	n_slot;
+	unsigned	n_tc;
+	unsigned	n_cc;
+	/*
+	 * Default queue is expected to be a low-priority queue.
+	 * This way, long transfers on the default queue started
+	 * by the codec engine will not cause audio defects.
+	 */
+	enum dma_event_q	default_queue;
+
+	/* Resource reservation for other cores */
+	struct edma_rsv_info	*rsv;
+
+	s8	(*queue_tc_mapping)[2];
+	s8	(*queue_priority_mapping)[2];
+	const s16	(*xbar_chans)[2];
+};
+
+#endif