From: Boojin Kim <boojin.kim@xxxxxxxxxxx>
This patch adds MDMA platform data and enables
MDMA for DMA memcpy operation for EXYNOS SoCs.
Signed-off-by: Boojin Kim <boojin.kim@xxxxxxxxxxx>
Signed-off-by: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
---
arch/arm/mach-exynos/clock-exynos4.c | 9 ++++++
arch/arm/mach-exynos/dma.c | 35 ++++++++++++++++++++++++
arch/arm/mach-exynos/include/mach/irqs.h | 2 +
arch/arm/mach-exynos/include/mach/map.h | 3 +-
arch/arm/plat-samsung/include/plat/dma-pl330.h | 8 +++++
5 files changed, 56 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-exynos/clock-exynos4.c b/arch/arm/mach-exynos/clock-exynos4.c
index 411b366b..ffcc46b 100644
--- a/arch/arm/mach-exynos/clock-exynos4.c
+++ b/arch/arm/mach-exynos/clock-exynos4.c
@@ -783,6 +783,13 @@ static struct clk exynos4_clk_pdma1 = {
.ctrlbit = (1 << 1),
};
+static struct clk exynos4_clk_mdma1 = {
+ .name = "dma",
+ .devname = "dma-pl330.2",
+ .enable = exynos4_clk_ip_image_ctrl,
+ .ctrlbit = ((1 << 8) | (1 << 5) | (1 << 2)),
+};
+
struct clk *exynos4_clkset_group_list[] = {
[0] = &clk_ext_xtal_mux,
[1] = &clk_xusbxti,
@@ -1301,6 +1308,7 @@ static struct clksrc_clk *exynos4_sysclks[] = {
static struct clk *exynos4_clk_cdev[] = {
&exynos4_clk_pdma0,
&exynos4_clk_pdma1,
+ &exynos4_clk_mdma,
};
static struct clksrc_clk *exynos4_clksrc_cdev[] = {
@@ -1329,6 +1337,7 @@ static struct clk_lookup exynos4_clk_lookup[] = {
CLKDEV_INIT("s3c-sdhci.3", "mmc_busclk.2", &exynos4_clk_sclk_mmc3.clk),
CLKDEV_INIT("dma-pl330.0", "apb_pclk", &exynos4_clk_pdma0),
CLKDEV_INIT("dma-pl330.1", "apb_pclk", &exynos4_clk_pdma1),
+ CLKDEV_INIT("dma-pl330.2", "apb_pclk", &exynos4_clk_mdma),
CLKDEV_INIT("s3c64xx-spi.0", "spi_busclk0", &exynos4_clk_sclk_spi0.clk),
CLKDEV_INIT("s3c64xx-spi.1", "spi_busclk0", &exynos4_clk_sclk_spi1.clk),
CLKDEV_INIT("s3c64xx-spi.2", "spi_busclk0", &exynos4_clk_sclk_spi2.clk),
diff --git a/arch/arm/mach-exynos/dma.c b/arch/arm/mach-exynos/dma.c
index b10fcd2..e89329e 100644
--- a/arch/arm/mach-exynos/dma.c
+++ b/arch/arm/mach-exynos/dma.c
@@ -139,6 +139,38 @@ struct amba_device exynos4_device_pdma1 = {
.periphid = 0x00041330,
};
+u8 mdma_peri[] = {
+ DMACH_MTOM_0,
+ DMACH_MTOM_1,
+ DMACH_MTOM_2,
+ DMACH_MTOM_3,
+ DMACH_MTOM_4,
+ DMACH_MTOM_5,
+ DMACH_MTOM_6,
+ DMACH_MTOM_7,
+};
+
+struct dma_pl330_platdata exynos4_mdma_pdata = {
+ .nr_valid_peri = ARRAY_SIZE(mdma_peri),
+ .peri_id = mdma_peri,
+};
+
+struct amba_device exynos4_device_mdma = {
+ .dev = {
+ .init_name = "dma-pl330.2",
+ .dma_mask = &dma_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ .platform_data = &exynos4_mdma_pdata,
+ },
+ .res = {
+ .start = EXYNOS4_PA_MDMA1,
+ .end = EXYNOS4_PA_MDMA1 + SZ_4K,
+ .flags = IORESOURCE_MEM,
+ },
+ .irq = {IRQ_MDMA1, NO_IRQ},
+ .periphid = 0x00041330,
+};
+
static int __init exynos4_dma_init(void)
{
if (of_have_populated_dt())
@@ -152,6 +184,9 @@ static int __init exynos4_dma_init(void)
dma_cap_set(DMA_CYCLIC, exynos4_pdma1_pdata.cap_mask);
amba_device_register(&exynos4_device_pdma1, &iomem_resource);
+ dma_cap_set(DMA_MEMCPY, exynos4_mdma_pdata.cap_mask);
+ amba_device_register(&exynos4_device_mdma, &iomem_resource);
+
return 0;
}
arch_initcall(exynos4_dma_init);
diff --git a/arch/arm/mach-exynos/include/mach/irqs.h b/arch/arm/mach-exynos/include/mach/irqs.h
index acf998f..874e224 100644
--- a/arch/arm/mach-exynos/include/mach/irqs.h
+++ b/arch/arm/mach-exynos/include/mach/irqs.h
@@ -45,6 +45,8 @@
#define IRQ_EINT15 IRQ_SPI(31)
#define IRQ_EINT16_31 IRQ_SPI(32)
+#define IRQ_MDMA0 IRQ_SPI(33)
+#define IRQ_MDMA1 IRQ_SPI(34)
#define IRQ_PDMA0 IRQ_SPI(35)
#define IRQ_PDMA1 IRQ_SPI(36)
#define IRQ_TIMER0_VIC IRQ_SPI(37)
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
index b157eb4..0691ca8 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -80,7 +80,8 @@
#define EXYNOS4_PA_TWD 0x10500600
#define EXYNOS4_PA_L2CC 0x10502000
-#define EXYNOS4_PA_MDMA 0x10810000
+#define EXYNOS4_PA_MDMA0 0x10810000
+#define EXYNOS4_PA_MDMA1 0x12840000
#define EXYNOS4_PA_PDMA0 0x12680000
#define EXYNOS4_PA_PDMA1 0x12690000
diff --git a/arch/arm/plat-samsung/include/plat/dma-pl330.h b/arch/arm/plat-samsung/include/plat/dma-pl330.h
index c5eaad5..ecf23a8 100644
--- a/arch/arm/plat-samsung/include/plat/dma-pl330.h
+++ b/arch/arm/plat-samsung/include/plat/dma-pl330.h
@@ -82,6 +82,14 @@ enum dma_ch {
DMACH_SLIMBUS4_TX,
DMACH_SLIMBUS5_RX,
DMACH_SLIMBUS5_TX,
+ DMACH_MTOM_0,
+ DMACH_MTOM_1,
+ DMACH_MTOM_2,
+ DMACH_MTOM_3,
+ DMACH_MTOM_4,
+ DMACH_MTOM_5,
+ DMACH_MTOM_6,
+ DMACH_MTOM_7,
/* END Marker, also used to denote a reserved channel */
DMACH_MAX,
};
--
1.7.4.4
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