ARM: shmobile: sh73a0: add DMAEngine support for MPDMAC
Current shdmac can support MPDMAC (= sound DMA) on sh73a0.
This support reduce CPU load when sound was playback.
On v2.0 manual, MPDMAC MID/RID number were wrong.
This patch is using the number which seems correct.
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/setup-sh73a0.c b/arch/arm/mach-shmobile/setup-sh73a0.c
index 04a0dfe..2c7bb03 100644
--- a/arch/arm/mach-shmobile/setup-sh73a0.c
+++ b/arch/arm/mach-shmobile/setup-sh73a0.c
@@ -651,6 +651,116 @@
},
};
+/* MPDMAC */
+static const struct sh_dmae_slave_config sh73a0_mpdma_slaves[] = {
+ {
+ .slave_id = SHDMA_SLAVE_FSI2A_RX,
+ .addr = 0xec230020,
+ .chcr = CHCR_RX(XMIT_SZ_32BIT),
+ .mid_rid = 0xd6, /* CHECK ME */
+ }, {
+ .slave_id = SHDMA_SLAVE_FSI2A_TX,
+ .addr = 0xec230024,
+ .chcr = CHCR_TX(XMIT_SZ_32BIT),
+ .mid_rid = 0xd5, /* CHECK ME */
+ }, {
+ .slave_id = SHDMA_SLAVE_FSI2C_RX,
+ .addr = 0xec230060,
+ .chcr = CHCR_RX(XMIT_SZ_32BIT),
+ .mid_rid = 0xda, /* CHECK ME */
+ }, {
+ .slave_id = SHDMA_SLAVE_FSI2C_TX,
+ .addr = 0xec230064,
+ .chcr = CHCR_TX(XMIT_SZ_32BIT),
+ .mid_rid = 0xd9, /* CHECK ME */
+ }, {
+ .slave_id = SHDMA_SLAVE_FSI2B_RX,
+ .addr = 0xec240020,
+ .chcr = CHCR_RX(XMIT_SZ_32BIT),
+ .mid_rid = 0x8e, /* CHECK ME */
+ }, {
+ .slave_id = SHDMA_SLAVE_FSI2B_TX,
+ .addr = 0xec240024,
+ .chcr = CHCR_RX(XMIT_SZ_32BIT),
+ .mid_rid = 0x8d, /* CHECK ME */
+ }, {
+ .slave_id = SHDMA_SLAVE_FSI2D_RX,
+ .addr = 0xec240060,
+ .chcr = CHCR_RX(XMIT_SZ_32BIT),
+ .mid_rid = 0x9a, /* CHECK ME */
+ },
+};
+
+#define MPDMA_CHANNEL(a, b, c) \
+{ \
+ .offset = a, \
+ .dmars = b, \
+ .dmars_bit = c, \
+ .chclr_offset = (0x220 - 0x20) + a \
+}
+
+static const struct sh_dmae_channel sh73a0_mpdma_channels[] = {
+ MPDMA_CHANNEL(0x00, 0, 0),
+ MPDMA_CHANNEL(0x10, 0, 8),
+ MPDMA_CHANNEL(0x20, 4, 0),
+ MPDMA_CHANNEL(0x30, 4, 8),
+ MPDMA_CHANNEL(0x50, 8, 0),
+ MPDMA_CHANNEL(0x70, 8, 8),
+};
+
+static struct sh_dmae_pdata sh73a0_mpdma_platform_data = {
+ .slave = sh73a0_mpdma_slaves,
+ .slave_num = ARRAY_SIZE(sh73a0_mpdma_slaves),
+ .channel = sh73a0_mpdma_channels,
+ .channel_num = ARRAY_SIZE(sh73a0_mpdma_channels),
+ .ts_low_shift = 3,
+ .ts_low_mask = 0x18,
+ .ts_high_shift = (20 - 2), /* 2 bits for shifted low TS */
+ .ts_high_mask = 0x00300000,
+ .ts_shift = ts_shift,
+ .ts_shift_num = ARRAY_SIZE(ts_shift),
+ .dmaor_init = DMAOR_DME,
+ .chclr_present = 1,
+};
+
+/* Resource order important! */
+static struct resource sh73a0_mpdma_resources[] = {
+ {
+ /* Channel registers and DMAOR */
+ .start = 0xec618020,
+ .end = 0xec61828f,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ /* DMARSx */
+ .start = 0xec619000,
+ .end = 0xec61900b,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "error_irq",
+ .start = gic_spi(181),
+ .end = gic_spi(181),
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ /* IRQ for channels 0-5 */
+ .start = gic_spi(175),
+ .end = gic_spi(180),
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device mpdma0_device = {
+ .name = "sh-dma-engine",
+ .id = 1,
+ .resource = sh73a0_mpdma_resources,
+ .num_resources = ARRAY_SIZE(sh73a0_mpdma_resources),
+ .dev = {
+ .platform_data = &sh73a0_mpdma_platform_data,
+ },
+};
+
static struct platform_device *sh73a0_early_devices[] __initdata = {
&scif0_device,
&scif1_device,
@@ -673,6 +783,7 @@
&i2c3_device,
&i2c4_device,
&dma0_device,
+ &mpdma0_device,
};
#define SRCR2 0xe61580b0