ARM/dmaengine: edma: Merge the two drivers under drivers/dma/

Move the code out from arch/arm/common and merge it inside of the dmaengine
driver.
This change is done with as minimal (if eny) functional change to the code
as possible to avoid introducing regression.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

arch/arm/Kconfig

@@ -736,7 +736,6 @@ config ARCH_DAVINCI
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_IRQ_CHIP
 	select HAVE_IDE
-	select TI_PRIV_EDMA
 	select USE_OF
 	select ZONE_DMA
 	help

arch/arm/common/Kconfig

@@ -17,6 +17,3 @@ config SHARP_PARAM
 
 config SHARP_SCOOP
 	bool
-
-config TI_PRIV_EDMA
-	bool

arch/arm/common/Makefile

@@ -15,6 +15,5 @@ obj-$(CONFIG_MCPM)		+= mcpm_head.o mcpm_entry.o mcpm_platsmp.o vlock.o
 CFLAGS_REMOVE_mcpm_entry.o	= -pg
 AFLAGS_mcpm_head.o		:= -march=armv7-a
 AFLAGS_vlock.o			:= -march=armv7-a
-obj-$(CONFIG_TI_PRIV_EDMA)	+= edma.o
 obj-$(CONFIG_BL_SWITCHER)	+= bL_switcher.o
 obj-$(CONFIG_BL_SWITCHER_DUMMY_IF) += bL_switcher_dummy_if.o

arch/arm/mach-omap2/Kconfig

@@ -90,7 +90,6 @@ config ARCH_OMAP2PLUS
 	select OMAP_GPMC
 	select PINCTRL
 	select SOC_BUS
-	select TI_PRIV_EDMA
 	select OMAP_IRQCHIP
 	help
 	  Systems based on OMAP2, OMAP3, OMAP4 or OMAP5

drivers/dma/Kconfig

@@ -486,7 +486,6 @@ config TI_EDMA
 	depends on ARCH_DAVINCI || ARCH_OMAP || ARCH_KEYSTONE
 	select DMA_ENGINE
 	select DMA_VIRTUAL_CHANNELS
-	select TI_PRIV_EDMA
 	default n
 	help
 	  Enable support for the TI EDMA controller. This DMA

include/linux/platform_data/edma.h

@@ -41,37 +41,6 @@
 #ifndef EDMA_H_
 #define EDMA_H_
 
-/* PaRAM slots are laid out like this */
-struct edmacc_param {
-	u32 opt;
-	u32 src;
-	u32 a_b_cnt;
-	u32 dst;
-	u32 src_dst_bidx;
-	u32 link_bcntrld;
-	u32 src_dst_cidx;
-	u32 ccnt;
-} __packed;
-
-/* 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 EDMA_DMA_COMPLETE 1
-#define EDMA_DMA_CC_ERROR 2
-#define EDMA_DMA_TC1_ERROR 3
-#define EDMA_DMA_TC2_ERROR 4
-
 enum dma_event_q {
 	EVENTQ_0 = 0,
 	EVENTQ_1 = 1,
@@ -84,49 +53,6 @@ enum dma_event_q {
 #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
-
-struct edma;
-
-struct edma *edma_get_data(struct device *edma_dev);
-
-/* alloc/free DMA channels and their dedicated parameter RAM slots */
-int edma_alloc_channel(struct edma *cc, int channel,
-	void (*callback)(unsigned channel, u16 ch_status, void *data),
-	void *data, enum dma_event_q);
-void edma_free_channel(struct edma *cc, unsigned channel);
-
-/* alloc/free parameter RAM slots */
-int edma_alloc_slot(struct edma *cc, int slot);
-void edma_free_slot(struct edma *cc, unsigned slot);
-
-/* calls that operate on part of a parameter RAM slot */
-dma_addr_t edma_get_position(struct edma *cc, unsigned slot, bool dst);
-void edma_link(struct edma *cc, unsigned from, unsigned to);
-
-/* calls that operate on an entire parameter RAM slot */
-void edma_write_slot(struct edma *cc, unsigned slot,
-		     const struct edmacc_param *params);
-void edma_read_slot(struct edma *cc, unsigned slot,
-		    struct edmacc_param *params);
-
-/* channel control operations */
-int edma_start(struct edma *cc, unsigned channel);
-void edma_stop(struct edma *cc, unsigned channel);
-void edma_clean_channel(struct edma *cc, unsigned channel);
-void edma_pause(struct edma *cc, unsigned channel);
-void edma_resume(struct edma *cc, unsigned channel);
-int edma_trigger_channel(struct edma *cc, unsigned channel);
-
-void edma_assign_channel_eventq(struct edma *cc, unsigned channel,
-				enum dma_event_q eventq_no);
-
 struct edma_rsv_info {
 
 	const s16	(*rsv_chans)[2];