Commit 9ed76e03 authored by Boojin Kim's avatar Boojin Kim Committed by Kukjin Kim
Browse files

ARM: EXYNOS: Enable MDMA driver 



This patch adds MDMA platform data and enables
MDMA for DMA memcpy operation for EXYNOS SoCs.

Signed-off-by: default avatarBoojin Kim <boojin.kim@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 44b2cef5

arch/arm/mach-exynos/clock-exynos4.c

+8 −0
Original line number Diff line number Diff line
@@ -784,6 +784,13 @@ 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,
@@ -1302,6 +1309,7 @@ static struct clksrc_clk *exynos4_sysclks[] = { 
static struct clk *exynos4_clk_cdev[] = {

	&exynos4_clk_pdma0,

	&exynos4_clk_pdma1,

	&exynos4_clk_mdma1,

};



static struct clksrc_clk *exynos4_clksrc_cdev[] = {

arch/arm/mach-exynos/dma.c

+22 −0
Original line number Diff line number Diff line
@@ -113,6 +113,25 @@ static struct dma_pl330_platdata exynos4_pdma1_pdata = { 
static AMBA_AHB_DEVICE(exynos4_pdma1,  "dma-pl330.1", 0x00041330,

	EXYNOS4_PA_PDMA1, {IRQ_PDMA1}, &exynos4_pdma1_pdata);



static 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,

};



static struct dma_pl330_platdata exynos4_mdma1_pdata = {

	.nr_valid_peri = ARRAY_SIZE(mdma_peri),

	.peri_id = mdma_peri,

};



static AMBA_AHB_DEVICE(exynos4_mdma1,  "dma-pl330.2", 0x00041330,

	EXYNOS4_PA_MDMA1, {IRQ_MDMA1}, &exynos4_mdma1_pdata);



static int __init exynos4_dma_init(void)

{

	if (of_have_populated_dt())
@@ -126,6 +145,9 @@ static int __init exynos4_dma_init(void) 
	dma_cap_set(DMA_CYCLIC, exynos4_pdma1_pdata.cap_mask);

	amba_device_register(&exynos4_pdma1_device, &iomem_resource);



	dma_cap_set(DMA_MEMCPY, exynos4_mdma1_pdata.cap_mask);

	amba_device_register(&exynos4_mdma1_device, &iomem_resource);



	return 0;

}

arch_initcall(exynos4_dma_init);

arch/arm/mach-exynos/include/mach/irqs.h

+2 −0
Original line number Diff line number Diff line
@@ -43,6 +43,8 @@ 
#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)

arch/arm/mach-exynos/include/mach/map.h

+2 −1
Original line number Diff line number Diff line
@@ -67,7 +67,8 @@ 
#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

arch/arm/plat-samsung/include/plat/dma-pl330.h

+8 −0
Original line number Diff line number Diff line
@@ -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,

};