ARM: shmobile: r8a7740: add DMAEngine support for SDHI

Current shdmac can support SDHI DMAC on r8a7740.
This support reduce CPU duty when SDHI access.

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>

diff --git a/arch/arm/mach-shmobile/include/mach/r8a7740.h b/arch/arm/mach-shmobile/include/mach/r8a7740.h
index f71507b..0f14ce8 100644 (file)
--- a/arch/arm/mach-shmobile/include/mach/r8a7740.h
+++ b/arch/arm/mach-shmobile/include/mach/r8a7740.h
@@ -591,6 +591,12 @@ enum {
 /* DMA slave IDs */
 enum {
        SHDMA_SLAVE_INVALID,
+       SHDMA_SLAVE_SDHI0_RX,
+       SHDMA_SLAVE_SDHI0_TX,
+       SHDMA_SLAVE_SDHI1_RX,
+       SHDMA_SLAVE_SDHI1_TX,
+       SHDMA_SLAVE_SDHI2_RX,
+       SHDMA_SLAVE_SDHI2_TX,
        SHDMA_SLAVE_FSIA_RX,
        SHDMA_SLAVE_FSIA_TX,
        SHDMA_SLAVE_FSIB_TX,

diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c
index 516a7ec..320c43a 100644 (file)
--- a/arch/arm/mach-shmobile/setup-r8a7740.c
+++ b/arch/arm/mach-shmobile/setup-r8a7740.c
@@ -306,6 +306,36 @@ enum {
 
 static const struct sh_dmae_slave_config r8a7740_dmae_slaves[] = {
        {
+               .slave_id       = SHDMA_SLAVE_SDHI0_TX,
+               .addr           = 0xe6850030,
+               .chcr           = CHCR_TX(XMIT_SZ_16BIT),
+               .mid_rid        = 0xc1,
+       }, {
+               .slave_id       = SHDMA_SLAVE_SDHI0_RX,
+               .addr           = 0xe6850030,
+               .chcr           = CHCR_RX(XMIT_SZ_16BIT),
+               .mid_rid        = 0xc2,
+       }, {
+               .slave_id       = SHDMA_SLAVE_SDHI1_TX,
+               .addr           = 0xe6860030,
+               .chcr           = CHCR_TX(XMIT_SZ_16BIT),
+               .mid_rid        = 0xc9,
+       }, {
+               .slave_id       = SHDMA_SLAVE_SDHI1_RX,
+               .addr           = 0xe6860030,
+               .chcr           = CHCR_RX(XMIT_SZ_16BIT),
+               .mid_rid        = 0xca,
+       }, {
+               .slave_id       = SHDMA_SLAVE_SDHI2_TX,
+               .addr           = 0xe6870030,
+               .chcr           = CHCR_TX(XMIT_SZ_16BIT),
+               .mid_rid        = 0xcd,
+       }, {
+               .slave_id       = SHDMA_SLAVE_SDHI2_RX,
+               .addr           = 0xe6870030,
+               .chcr           = CHCR_RX(XMIT_SZ_16BIT),
+               .mid_rid        = 0xce,
+       }, {
                .slave_id       = SHDMA_SLAVE_FSIA_TX,
                .addr           = 0xfe1f0024,
                .chcr           = CHCR_TX(XMIT_SZ_32BIT),