ARM: shmobile: use common DMAEngine definitions on r8a7740

This patch switch over to use common DMAEngine definitions,
and reduced a waste of code.

It is easy to understand if sh_dmae_pdata / sh_dmae_slave_config
settings are used defined value instead of direct value.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

arch/arm/mach-shmobile/setup-r8a7740.c

@@ -27,6 +27,7 @@
 #include <linux/sh_dma.h>
 #include <linux/sh_timer.h>
 #include <linux/dma-mapping.h>
+#include <mach/dma-register.h>
 #include <mach/r8a7740.h>
 #include <mach/common.h>
 #include <mach/irqs.h>
@@ -279,31 +280,6 @@ static struct platform_device *r8a7740_early_devices[] __initdata = {
 };
 
 /* DMA */
-enum {
-	XMIT_SZ_8BIT		= 0,
-	XMIT_SZ_16BIT		= 1,
-	XMIT_SZ_32BIT		= 2,
-	XMIT_SZ_64BIT		= 7,
-	XMIT_SZ_128BIT		= 3,
-	XMIT_SZ_256BIT		= 4,
-	XMIT_SZ_512BIT		= 5,
-};
-
-/* log2(size / 8) - used to calculate number of transfers */
-#define TS_SHIFT {			\
-	[XMIT_SZ_8BIT]		= 0,	\
-	[XMIT_SZ_16BIT]		= 1,	\
-	[XMIT_SZ_32BIT]		= 2,	\
-	[XMIT_SZ_64BIT]		= 3,	\
-	[XMIT_SZ_128BIT]	= 4,	\
-	[XMIT_SZ_256BIT]	= 5,	\
-	[XMIT_SZ_512BIT]	= 6,	\
-}
-
-#define TS_INDEX2VAL(i) ((((i) & 0x3) << 3) | (((i) & 0xc) << (20 - 2)))
-#define CHCR_TX(xmit_sz) (DM_FIX | SM_INC | 0x800 | TS_INDEX2VAL((xmit_sz)))
-#define CHCR_RX(xmit_sz) (DM_INC | SM_FIX | 0x800 | TS_INDEX2VAL((xmit_sz)))
-
 static const struct sh_dmae_slave_config r8a7740_dmae_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_SDHI0_TX,
@@ -370,19 +346,17 @@ static const struct sh_dmae_channel r8a7740_dmae_channels[] = {
 	DMA_CHANNEL(0x60, 8, 8),
 };
 
-static const unsigned int ts_shift[] = TS_SHIFT;
-
 static struct sh_dmae_pdata dma_platform_data = {
 	.slave		= r8a7740_dmae_slaves,
 	.slave_num	= ARRAY_SIZE(r8a7740_dmae_slaves),
 	.channel	= r8a7740_dmae_channels,
 	.channel_num	= ARRAY_SIZE(r8a7740_dmae_channels),
-	.ts_low_shift	= 3,
-	.ts_low_mask	= 0x18,
-	.ts_high_shift	= (20 - 2),
-	.ts_high_mask	= 0x00300000,
-	.ts_shift	= ts_shift,
-	.ts_shift_num	= ARRAY_SIZE(ts_shift),
+	.ts_low_shift	= TS_LOW_SHIFT,
+	.ts_low_mask	= TS_LOW_BIT << TS_LOW_SHIFT,
+	.ts_high_shift	= TS_HI_SHIFT,
+	.ts_high_mask	= TS_HI_BIT << TS_HI_SHIFT,
+	.ts_shift	= dma_ts_shift,
+	.ts_shift_num	= ARRAY_SIZE(dma_ts_shift),
 	.dmaor_init	= DMAOR_DME,
 	.chclr_present	= 1,
 };
@@ -502,20 +476,6 @@ static struct platform_device dma2_device = {
 };
 
 /* USB-DMAC */
-/* Transmit sizes and respective CHCR register values */
-enum {
-	USBTS_XMIT_SZ_8BYTE		= 0,
-	USBTS_XMIT_SZ_16BYTE		= 1,
-	USBTS_XMIT_SZ_32BYTE		= 2,
-};
-
-/* log2(size / 8) - used to calculate number of transfers */
-static const unsigned int dma_usbts_shift[] = {
-	[USBTS_XMIT_SZ_8BYTE]	= 3,
-	[USBTS_XMIT_SZ_16BYTE]	= 4,
-	[USBTS_XMIT_SZ_32BYTE]	= 5,
-};
-
 static const struct sh_dmae_channel r8a7740_usb_dma_channels[] = {
 	{
 		.offset = 0,
@@ -524,8 +484,6 @@ static const struct sh_dmae_channel r8a7740_usb_dma_channels[] = {
 	},
 };
 
-#define USBTS_INDEX2VAL(i) (((i) & 3) << 6)
-
 static const struct sh_dmae_slave_config r8a7740_usb_dma_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_USBHS_TX,
@@ -541,10 +499,10 @@ static struct sh_dmae_pdata usb_dma_platform_data = {
 	.slave_num	= ARRAY_SIZE(r8a7740_usb_dma_slaves),
 	.channel	= r8a7740_usb_dma_channels,
 	.channel_num	= ARRAY_SIZE(r8a7740_usb_dma_channels),
-	.ts_low_shift	= 6,
-	.ts_low_mask	= 0xc0,
-	.ts_high_shift	= 0,
-	.ts_high_mask	= 0,
+	.ts_low_shift	= USBTS_LOW_SHIFT,
+	.ts_low_mask	= USBTS_LOW_BIT << USBTS_LOW_SHIFT,
+	.ts_high_shift	= USBTS_HI_SHIFT,
+	.ts_high_mask	= USBTS_HI_BIT << USBTS_HI_SHIFT,
 	.ts_shift	= dma_usbts_shift,
 	.ts_shift_num	= ARRAY_SIZE(dma_usbts_shift),
 	.dmaor_init	= DMAOR_DME,