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authorLinus Torvalds <torvalds@linux-foundation.org>2011-11-04 18:02:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-11-04 18:02:25 -0700
commitfba9569924e06da076cb2ad12474bbd82d69f54d (patch)
treef0b7d9c82f8dd90f0dc757a4c00afc0872fc1484 /arch/arm
parent3d0a8d10cfb4cc3d1877c29a866ee7d8a46aa2fa (diff)
parent4598fc2c94b68740e0269db03c98a1e7ad5af773 (diff)
Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (63 commits) dmaengine: mid_dma: mask_peripheral_interrupt only when dmac is idle dmaengine/ep93xx_dma: add module.h include pch_dma: Reduce wasting memory pch_dma: Fix suspend issue dma/timberdale: free_irq() on an error path dma: shdma: transfer based runtime PM dmaengine: shdma: protect against the IRQ handler dmaengine i.MX DMA/SDMA: add missing include of linux/module.h dmaengine: delete redundant chan_id and chancnt initialization in dma drivers dmaengine/amba-pl08x: Check txd->llis_va before freeing dma_pool dmaengine/amba-pl08x: Add support for sg len greater than one for slave transfers serial: sh-sci: don't filter on DMA device, use only channel ID ARM: SAMSUNG: Remove Samsung specific enum type for dma direction ASoC: Samsung: Update DMA interface spi/s3c64xx: Merge dma control code spi/s3c64xx: Add support DMA engine API ARM: SAMSUNG: Remove S3C-PL330-DMA driver ARM: S5P64X0: Use generic DMA PL330 driver ARM: S5PC100: Use generic DMA PL330 driver ARM: S5PV210: Use generic DMA PL330 driver ... Fix up fairly trivial conflicts in - arch/arm/mach-exynos4/{Kconfig,clock.c} - arch/arm/mach-s5p64x0/dma.c
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/include/asm/hardware/pl080.h4
-rw-r--r--arch/arm/mach-exynos4/Kconfig2
-rw-r--r--arch/arm/mach-exynos4/clock.c14
-rw-r--r--arch/arm/mach-exynos4/dma.c299
-rw-r--r--arch/arm/mach-exynos4/include/mach/dma.h4
-rw-r--r--arch/arm/mach-s3c2410/include/mach/dma.h20
-rw-r--r--arch/arm/mach-s3c2412/dma.c4
-rw-r--r--arch/arm/mach-s3c64xx/dma.c10
-rw-r--r--arch/arm/mach-s3c64xx/include/mach/dma.h8
-rw-r--r--arch/arm/mach-s5p64x0/Kconfig4
-rw-r--r--arch/arm/mach-s5p64x0/clock-s5p6440.c9
-rw-r--r--arch/arm/mach-s5p64x0/clock-s5p6450.c9
-rw-r--r--arch/arm/mach-s5p64x0/dma.c269
-rw-r--r--arch/arm/mach-s5p64x0/include/mach/dma.h4
-rw-r--r--arch/arm/mach-s5pc100/Kconfig2
-rw-r--r--arch/arm/mach-s5pc100/clock.c11
-rw-r--r--arch/arm/mach-s5pc100/dma.c323
-rw-r--r--arch/arm/mach-s5pc100/include/mach/dma.h4
-rw-r--r--arch/arm/mach-s5pv210/Kconfig2
-rw-r--r--arch/arm/mach-s5pv210/clock.c10
-rw-r--r--arch/arm/mach-s5pv210/dma.c316
-rw-r--r--arch/arm/mach-s5pv210/include/mach/dma.h4
-rw-r--r--arch/arm/plat-s3c24xx/dma.c10
-rw-r--r--arch/arm/plat-samsung/Kconfig9
-rw-r--r--arch/arm/plat-samsung/Makefile4
-rw-r--r--arch/arm/plat-samsung/dma-ops.c131
-rw-r--r--arch/arm/plat-samsung/include/plat/dma-ops.h63
-rw-r--r--arch/arm/plat-samsung/include/plat/dma-pl330.h (renamed from arch/arm/plat-samsung/include/plat/s3c-dma-pl330.h)24
-rw-r--r--arch/arm/plat-samsung/include/plat/dma-s3c24xx.h2
-rw-r--r--arch/arm/plat-samsung/include/plat/dma.h10
-rw-r--r--arch/arm/plat-samsung/include/plat/s3c-pl330-pdata.h32
-rw-r--r--arch/arm/plat-samsung/s3c-dma-ops.c130
-rw-r--r--arch/arm/plat-samsung/s3c-pl330.c1244
33 files changed, 1229 insertions, 1762 deletions
diff --git a/arch/arm/include/asm/hardware/pl080.h b/arch/arm/include/asm/hardware/pl080.h
index e4a04e4e562..33c78d7af2e 100644
--- a/arch/arm/include/asm/hardware/pl080.h
+++ b/arch/arm/include/asm/hardware/pl080.h
@@ -21,6 +21,9 @@
* OneNAND features.
*/
+#ifndef ASM_PL080_H
+#define ASM_PL080_H
+
#define PL080_INT_STATUS (0x00)
#define PL080_TC_STATUS (0x04)
#define PL080_TC_CLEAR (0x08)
@@ -138,3 +141,4 @@ struct pl080s_lli {
u32 control1;
};
+#endif /* ASM_PL080_H */
diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig
index a6527359803..44013e0672f 100644
--- a/arch/arm/mach-exynos4/Kconfig
+++ b/arch/arm/mach-exynos4/Kconfig
@@ -11,7 +11,7 @@ if ARCH_EXYNOS4
config CPU_EXYNOS4210
bool
- select S3C_PL330_DMA
+ select SAMSUNG_DMADEV
select ARM_CPU_SUSPEND if PM
help
Enable EXYNOS4210 CPU support
diff --git a/arch/arm/mach-exynos4/clock.c b/arch/arm/mach-exynos4/clock.c
index 0d59be3fa1f..e21952dfb7e 100644
--- a/arch/arm/mach-exynos4/clock.c
+++ b/arch/arm/mach-exynos4/clock.c
@@ -111,6 +111,11 @@ struct clk clk_sclk_usbphy1 = {
.name = "sclk_usbphy1",
};
+static struct clk dummy_apb_pclk = {
+ .name = "apb_pclk",
+ .id = -1,
+};
+
static int exynos4_clksrc_mask_top_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P_CLKSRC_MASK_TOP, clk, enable);
@@ -503,12 +508,12 @@ static struct clk init_clocks_off[] = {
.enable = exynos4_clk_ip_fsys_ctrl,
.ctrlbit = (1 << 9),
}, {
- .name = "pdma",
+ .name = "dma",
.devname = "s3c-pl330.0",
.enable = exynos4_clk_ip_fsys_ctrl,
.ctrlbit = (1 << 0),
}, {
- .name = "pdma",
+ .name = "dma",
.devname = "s3c-pl330.1",
.enable = exynos4_clk_ip_fsys_ctrl,
.ctrlbit = (1 << 1),
@@ -1281,6 +1286,11 @@ void __init exynos4_register_clocks(void)
s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
+<<<<<<< HEAD
register_syscore_ops(&exynos4_clock_syscore_ops);
+=======
+ s3c24xx_register_clock(&dummy_apb_pclk);
+
+>>>>>>> 4598fc2c94b68740e0269db03c98a1e7ad5af773
s3c_pwmclk_init();
}
diff --git a/arch/arm/mach-exynos4/dma.c b/arch/arm/mach-exynos4/dma.c
index 564bb530f33..d57d6625502 100644
--- a/arch/arm/mach-exynos4/dma.c
+++ b/arch/arm/mach-exynos4/dma.c
@@ -21,151 +21,228 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/pl330.h>
+#include <asm/irq.h>
#include <plat/devs.h>
#include <plat/irqs.h>
#include <mach/map.h>
#include <mach/irqs.h>
-
-#include <plat/s3c-pl330-pdata.h>
+#include <mach/dma.h>
static u64 dma_dmamask = DMA_BIT_MASK(32);
-static struct resource exynos4_pdma0_resource[] = {
- [0] = {
- .start = EXYNOS4_PA_PDMA0,
- .end = EXYNOS4_PA_PDMA0 + SZ_4K,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = IRQ_PDMA0,
- .end = IRQ_PDMA0,
- .flags = IORESOURCE_IRQ,
+struct dma_pl330_peri pdma0_peri[28] = {
+ {
+ .peri_id = (u8)DMACH_PCM0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_PCM0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_PCM2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_PCM2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_MSM_REQ0,
+ }, {
+ .peri_id = (u8)DMACH_MSM_REQ2,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S0S_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART4_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART4_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SLIMBUS0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SLIMBUS0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SLIMBUS2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SLIMBUS2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SLIMBUS4_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SLIMBUS4_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_AC97_MICIN,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_AC97_PCMIN,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_AC97_PCMOUT,
+ .rqtype = MEMTODEV,
},
};
-static struct s3c_pl330_platdata exynos4_pdma0_pdata = {
- .peri = {
- [0] = DMACH_PCM0_RX,
- [1] = DMACH_PCM0_TX,
- [2] = DMACH_PCM2_RX,
- [3] = DMACH_PCM2_TX,
- [4] = DMACH_MSM_REQ0,
- [5] = DMACH_MSM_REQ2,
- [6] = DMACH_SPI0_RX,
- [7] = DMACH_SPI0_TX,
- [8] = DMACH_SPI2_RX,
- [9] = DMACH_SPI2_TX,
- [10] = DMACH_I2S0S_TX,
- [11] = DMACH_I2S0_RX,
- [12] = DMACH_I2S0_TX,
- [13] = DMACH_I2S2_RX,
- [14] = DMACH_I2S2_TX,
- [15] = DMACH_UART0_RX,
- [16] = DMACH_UART0_TX,
- [17] = DMACH_UART2_RX,
- [18] = DMACH_UART2_TX,
- [19] = DMACH_UART4_RX,
- [20] = DMACH_UART4_TX,
- [21] = DMACH_SLIMBUS0_RX,
- [22] = DMACH_SLIMBUS0_TX,
- [23] = DMACH_SLIMBUS2_RX,
- [24] = DMACH_SLIMBUS2_TX,
- [25] = DMACH_SLIMBUS4_RX,
- [26] = DMACH_SLIMBUS4_TX,
- [27] = DMACH_AC97_MICIN,
- [28] = DMACH_AC97_PCMIN,
- [29] = DMACH_AC97_PCMOUT,
- [30] = DMACH_MAX,
- [31] = DMACH_MAX,
- },
+struct dma_pl330_platdata exynos4_pdma0_pdata = {
+ .nr_valid_peri = ARRAY_SIZE(pdma0_peri),
+ .peri = pdma0_peri,
};
-static struct platform_device exynos4_device_pdma0 = {
- .name = "s3c-pl330",
- .id = 0,
- .num_resources = ARRAY_SIZE(exynos4_pdma0_resource),
- .resource = exynos4_pdma0_resource,
- .dev = {
+struct amba_device exynos4_device_pdma0 = {
+ .dev = {
+ .init_name = "dma-pl330.0",
.dma_mask = &dma_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &exynos4_pdma0_pdata,
},
+ .res = {
+ .start = EXYNOS4_PA_PDMA0,
+ .end = EXYNOS4_PA_PDMA0 + SZ_4K,
+ .flags = IORESOURCE_MEM,
+ },
+ .irq = {IRQ_PDMA0, NO_IRQ},
+ .periphid = 0x00041330,
};
-static struct resource exynos4_pdma1_resource[] = {
- [0] = {
- .start = EXYNOS4_PA_PDMA1,
- .end = EXYNOS4_PA_PDMA1 + SZ_4K,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = IRQ_PDMA1,
- .end = IRQ_PDMA1,
- .flags = IORESOURCE_IRQ,
+struct dma_pl330_peri pdma1_peri[25] = {
+ {
+ .peri_id = (u8)DMACH_PCM0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_PCM0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_PCM1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_PCM1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_MSM_REQ1,
+ }, {
+ .peri_id = (u8)DMACH_MSM_REQ3,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S0S_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART3_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART3_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SLIMBUS1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SLIMBUS1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SLIMBUS3_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SLIMBUS3_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SLIMBUS5_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SLIMBUS5_TX,
+ .rqtype = MEMTODEV,
},
};
-static struct s3c_pl330_platdata exynos4_pdma1_pdata = {
- .peri = {
- [0] = DMACH_PCM0_RX,
- [1] = DMACH_PCM0_TX,
- [2] = DMACH_PCM1_RX,
- [3] = DMACH_PCM1_TX,
- [4] = DMACH_MSM_REQ1,
- [5] = DMACH_MSM_REQ3,
- [6] = DMACH_SPI1_RX,
- [7] = DMACH_SPI1_TX,
- [8] = DMACH_I2S0S_TX,
- [9] = DMACH_I2S0_RX,
- [10] = DMACH_I2S0_TX,
- [11] = DMACH_I2S1_RX,
- [12] = DMACH_I2S1_TX,
- [13] = DMACH_UART0_RX,
- [14] = DMACH_UART0_TX,
- [15] = DMACH_UART1_RX,
- [16] = DMACH_UART1_TX,
- [17] = DMACH_UART3_RX,
- [18] = DMACH_UART3_TX,
- [19] = DMACH_SLIMBUS1_RX,
- [20] = DMACH_SLIMBUS1_TX,
- [21] = DMACH_SLIMBUS3_RX,
- [22] = DMACH_SLIMBUS3_TX,
- [23] = DMACH_SLIMBUS5_RX,
- [24] = DMACH_SLIMBUS5_TX,
- [25] = DMACH_SLIMBUS0AUX_RX,
- [26] = DMACH_SLIMBUS0AUX_TX,
- [27] = DMACH_SPDIF,
- [28] = DMACH_MAX,
- [29] = DMACH_MAX,
- [30] = DMACH_MAX,
- [31] = DMACH_MAX,
- },
+struct dma_pl330_platdata exynos4_pdma1_pdata = {
+ .nr_valid_peri = ARRAY_SIZE(pdma1_peri),
+ .peri = pdma1_peri,
};
-static struct platform_device exynos4_device_pdma1 = {
- .name = "s3c-pl330",
- .id = 1,
- .num_resources = ARRAY_SIZE(exynos4_pdma1_resource),
- .resource = exynos4_pdma1_resource,
- .dev = {
+struct amba_device exynos4_device_pdma1 = {
+ .dev = {
+ .init_name = "dma-pl330.1",
.dma_mask = &dma_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &exynos4_pdma1_pdata,
},
-};
-
-static struct platform_device *exynos4_dmacs[] __initdata = {
- &exynos4_device_pdma0,
- &exynos4_device_pdma1,
+ .res = {
+ .start = EXYNOS4_PA_PDMA1,
+ .end = EXYNOS4_PA_PDMA1 + SZ_4K,
+ .flags = IORESOURCE_MEM,
+ },
+ .irq = {IRQ_PDMA1, NO_IRQ},
+ .periphid = 0x00041330,
};
static int __init exynos4_dma_init(void)
{
- platform_add_devices(exynos4_dmacs, ARRAY_SIZE(exynos4_dmacs));
+ amba_device_register(&exynos4_device_pdma0, &iomem_resource);
return 0;
}
diff --git a/arch/arm/mach-exynos4/include/mach/dma.h b/arch/arm/mach-exynos4/include/mach/dma.h
index 81209eb1409..201842a3769 100644
--- a/arch/arm/mach-exynos4/include/mach/dma.h
+++ b/arch/arm/mach-exynos4/include/mach/dma.h
@@ -20,7 +20,7 @@
#ifndef __MACH_DMA_H
#define __MACH_DMA_H
-/* This platform uses the common S3C DMA API driver for PL330 */
-#include <plat/s3c-dma-pl330.h>
+/* This platform uses the common DMA API driver for PL330 */
+#include <plat/dma-pl330.h>
#endif /* __MACH_DMA_H */
diff --git a/arch/arm/mach-s3c2410/include/mach/dma.h b/arch/arm/mach-s3c2410/include/mach/dma.h
index b2b2a5bb275..ae8e482b642 100644
--- a/arch/arm/mach-s3c2410/include/mach/dma.h
+++ b/arch/arm/mach-s3c2410/include/mach/dma.h
@@ -13,7 +13,6 @@
#ifndef __ASM_ARCH_DMA_H
#define __ASM_ARCH_DMA_H __FILE__
-#include <plat/dma.h>
#include <linux/sysdev.h>
#define MAX_DMA_TRANSFER_SIZE 0x100000 /* Data Unit is half word */
@@ -51,6 +50,18 @@ enum dma_ch {
DMACH_MAX, /* the end entry */
};
+static inline bool samsung_dma_has_circular(void)
+{
+ return false;
+}
+
+static inline bool samsung_dma_is_dmadev(void)
+{
+ return false;
+}
+
+#include <plat/dma.h>
+
#define DMACH_LOW_LEVEL (1<<28) /* use this to specifiy hardware ch no */
/* we have 4 dma channels */
@@ -163,7 +174,7 @@ struct s3c2410_dma_chan {
struct s3c2410_dma_client *client;
/* channel configuration */
- enum s3c2410_dmasrc source;
+ enum dma_data_direction source;
enum dma_ch req_ch;
unsigned long dev_addr;
unsigned long load_timeout;
@@ -196,9 +207,4 @@ struct s3c2410_dma_chan {
typedef unsigned long dma_device_t;
-static inline bool s3c_dma_has_circular(void)
-{
- return false;
-}
-
#endif /* __ASM_ARCH_DMA_H */
diff --git a/arch/arm/mach-s3c2412/dma.c b/arch/arm/mach-s3c2412/dma.c
index c61e3261615..d2a7d5ef3e6 100644
--- a/arch/arm/mach-s3c2412/dma.c
+++ b/arch/arm/mach-s3c2412/dma.c
@@ -130,11 +130,11 @@ static struct s3c24xx_dma_map __initdata s3c2412_dma_mappings[] = {
static void s3c2412_dma_direction(struct s3c2410_dma_chan *chan,
struct s3c24xx_dma_map *map,
- enum s3c2410_dmasrc dir)
+ enum dma_data_direction dir)
{
unsigned long chsel;
- if (dir == S3C2410_DMASRC_HW)
+ if (dir == DMA_FROM_DEVICE)
chsel = map->channels_rx[0];
else
chsel = map->channels[0];
diff --git a/arch/arm/mach-s3c64xx/dma.c b/arch/arm/mach-s3c64xx/dma.c
index 204bfafe4bf..67c97fab62f 100644
--- a/arch/arm/mach-s3c64xx/dma.c
+++ b/arch/arm/mach-s3c64xx/dma.c
@@ -147,14 +147,14 @@ static void s3c64xx_dma_fill_lli(struct s3c2410_dma_chan *chan,
u32 control0, control1;
switch (chan->source) {
- case S3C2410_DMASRC_HW:
+ case DMA_FROM_DEVICE:
src = chan->dev_addr;
dst = data;
control0 = PL080_CONTROL_SRC_AHB2;
control0 |= PL080_CONTROL_DST_INCR;
break;
- case S3C2410_DMASRC_MEM:
+ case DMA_TO_DEVICE:
src = data;
dst = chan->dev_addr;
control0 = PL080_CONTROL_DST_AHB2;
@@ -416,7 +416,7 @@ EXPORT_SYMBOL(s3c2410_dma_enqueue);
int s3c2410_dma_devconfig(enum dma_ch channel,
- enum s3c2410_dmasrc source,
+ enum dma_data_direction source,
unsigned long devaddr)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
@@ -437,11 +437,11 @@ int s3c2410_dma_devconfig(enum dma_ch channel,
pr_debug("%s: peripheral %d\n", __func__, peripheral);
switch (source) {
- case S3C2410_DMASRC_HW:
+ case DMA_FROM_DEVICE:
config = 2 << PL080_CONFIG_FLOW_CONTROL_SHIFT;
config |= peripheral << PL080_CONFIG_SRC_SEL_SHIFT;
break;
- case S3C2410_DMASRC_MEM:
+ case DMA_TO_DEVICE:
config = 1 << PL080_CONFIG_FLOW_CONTROL_SHIFT;
config |= peripheral << PL080_CONFIG_DST_SEL_SHIFT;
break;
diff --git a/arch/arm/mach-s3c64xx/include/mach/dma.h b/arch/arm/mach-s3c64xx/include/mach/dma.h
index 0a5d9268a23..fe1a98cf0e4 100644
--- a/arch/arm/mach-s3c64xx/include/mach/dma.h
+++ b/arch/arm/mach-s3c64xx/include/mach/dma.h
@@ -58,11 +58,15 @@ enum dma_ch {
DMACH_MAX /* the end */
};
-static __inline__ bool s3c_dma_has_circular(void)
+static inline bool samsung_dma_has_circular(void)
{
return true;
}
+static inline bool samsung_dma_is_dmadev(void)
+{
+ return false;
+}
#define S3C2410_DMAF_CIRCULAR (1 << 0)
#include <plat/dma.h>
@@ -95,7 +99,7 @@ struct s3c2410_dma_chan {
unsigned char peripheral;
unsigned int flags;
- enum s3c2410_dmasrc source;
+ enum dma_data_direction source;
dma_addr_t dev_addr;
diff --git a/arch/arm/mach-s5p64x0/Kconfig b/arch/arm/mach-s5p64x0/Kconfig
index 65c7518dad7..9527ed24dbf 100644
--- a/arch/arm/mach-s5p64x0/Kconfig
+++ b/arch/arm/mach-s5p64x0/Kconfig
@@ -9,14 +9,14 @@ if ARCH_S5P64X0
config CPU_S5P6440
bool
- select S3C_PL330_DMA
+ select SAMSUNG_DMADEV
select S5P_HRT
help
Enable S5P6440 CPU support
config CPU_S5P6450
bool
- select S3C_PL330_DMA
+ select SAMSUNG_DMADEV
select S5P_HRT
help
Enable S5P6450 CPU support
diff --git a/arch/arm/mach-s5p64x0/clock-s5p6440.c b/arch/arm/mach-s5p64x0/clock-s5p6440.c
index 0e9cd3092dd..c1f548f69a0 100644
--- a/arch/arm/mach-s5p64x0/clock-s5p6440.c
+++ b/arch/arm/mach-s5p64x0/clock-s5p6440.c
@@ -146,7 +146,7 @@ static struct clk init_clocks_off[] = {
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 8),
}, {
- .name = "pdma",
+ .name = "dma",
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 12),
@@ -499,6 +499,11 @@ static struct clksrc_clk *sysclks[] = {
&clk_pclk_low,
};
+static struct clk dummy_apb_pclk = {
+ .name = "apb_pclk",
+ .id = -1,
+};
+
void __init_or_cpufreq s5p6440_setup_clocks(void)
{
struct clk *xtal_clk;
@@ -581,5 +586,7 @@ void __init s5p6440_register_clocks(void)
s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
+ s3c24xx_register_clock(&dummy_apb_pclk);
+
s3c_pwmclk_init();
}
diff --git a/arch/arm/mach-s5p64x0/clock-s5p6450.c b/arch/arm/mach-s5p64x0/clock-s5p6450.c
index d9dc16cde10..3d9b6097557 100644
--- a/arch/arm/mach-s5p64x0/clock-s5p6450.c
+++ b/arch/arm/mach-s5p64x0/clock-s5p6450.c
@@ -179,7 +179,7 @@ static struct clk init_clocks_off[] = {
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 3),
}, {
- .name = "pdma",
+ .name = "dma",
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 12),
@@ -553,6 +553,11 @@ static struct clksrc_clk *sysclks[] = {
&clk_sclk_audio0,
};
+static struct clk dummy_apb_pclk = {
+ .name = "apb_pclk",
+ .id = -1,
+};
+
void __init_or_cpufreq s5p6450_setup_clocks(void)
{
struct clk *xtal_clk;
@@ -632,5 +637,7 @@ void __init s5p6450_register_clocks(void)
s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
+ s3c24xx_register_clock(&dummy_apb_pclk);
+
s3c_pwmclk_init();
}
diff --git a/arch/arm/mach-s5p64x0/dma.c b/arch/arm/mach-s5p64x0/dma.c
index 0e5b3e63e5b..442dd4ad12d 100644
--- a/arch/arm/mach-s5p64x0/dma.c
+++ b/arch/arm/mach-s5p64x0/dma.c
@@ -21,115 +21,208 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/pl330.h>
+
+#include <asm/irq.h>
#include <mach/map.h>
#include <mach/irqs.h>
#include <mach/regs-clock.h>
+#include <mach/dma.h>
#include <plat/cpu.h>
#include <plat/devs.h>
-#include <plat/s3c-pl330-pdata.h>
+#include <plat/irqs.h>
static u64 dma_dmamask = DMA_BIT_MASK(32);
-static struct resource s5p64x0_pdma_resource[] = {
- [0] = {
- .start = S5P64X0_PA_PDMA,
- .end = S5P64X0_PA_PDMA + SZ_4K,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = IRQ_DMA0,
- .end = IRQ_DMA0,
- .flags = IORESOURCE_IRQ,
+struct dma_pl330_peri s5p6440_pdma_peri[22] = {
+ {
+ .peri_id = (u8)DMACH_UART0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART3_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART3_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = DMACH_MAX,
+ }, {
+ .peri_id = DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_PCM0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_PCM0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_RX,
+ .rqtype = DEVTOMEM,
},
};
-static struct s3c_pl330_platdata s5p6440_pdma_pdata = {
- .peri = {
- [0] = DMACH_UART0_RX,
- [1] = DMACH_UART0_TX,
- [2] = DMACH_UART1_RX,
- [3] = DMACH_UART1_TX,
- [4] = DMACH_UART2_RX,
- [5] = DMACH_UART2_TX,
- [6] = DMACH_UART3_RX,
- [7] = DMACH_UART3_TX,
- [8] = DMACH_MAX,
- [9] = DMACH_MAX,
- [10] = DMACH_PCM0_TX,
- [11] = DMACH_PCM0_RX,
- [12] = DMACH_I2S0_TX,
- [13] = DMACH_I2S0_RX,
- [14] = DMACH_SPI0_TX,
- [15] = DMACH_SPI0_RX,
- [16] = DMACH_MAX,
- [17] = DMACH_MAX,
- [18] = DMACH_MAX,
- [19] = DMACH_MAX,
- [20] = DMACH_SPI1_TX,
- [21] = DMACH_SPI1_RX,
- [22] = DMACH_MAX,
- [23] = DMACH_MAX,
- [24] = DMACH_MAX,
- [25] = DMACH_MAX,
- [26] = DMACH_MAX,
- [27] = DMACH_MAX,
- [28] = DMACH_MAX,
- [29] = DMACH_PWM,
- [30] = DMACH_MAX,
- [31] = DMACH_MAX,
- },
+struct dma_pl330_platdata s5p6440_pdma_pdata = {
+ .nr_valid_peri = ARRAY_SIZE(s5p6440_pdma_peri),
+ .peri = s5p6440_pdma_peri,
};
-static struct s3c_pl330_platdata s5p6450_pdma_pdata = {
- .peri = {
- [0] = DMACH_UART0_RX,
- [1] = DMACH_UART0_TX,
- [2] = DMACH_UART1_RX,
- [3] = DMACH_UART1_TX,
- [4] = DMACH_UART2_RX,
- [5] = DMACH_UART2_TX,
- [6] = DMACH_UART3_RX,
- [7] = DMACH_UART3_TX,
- [8] = DMACH_UART4_RX,
- [9] = DMACH_UART4_TX,
- [10] = DMACH_PCM0_TX,
- [11] = DMACH_PCM0_RX,
- [12] = DMACH_I2S0_TX,
- [13] = DMACH_I2S0_RX,
- [14] = DMACH_SPI0_TX,
- [15] = DMACH_SPI0_RX,
- [16] = DMACH_PCM1_TX,
- [17] = DMACH_PCM1_RX,
- [18] = DMACH_PCM2_TX,
- [19] = DMACH_PCM2_RX,
- [20] = DMACH_SPI1_TX,
- [21] = DMACH_SPI1_RX,
- [22] = DMACH_USI_TX,
- [23] = DMACH_USI_RX,
- [24] = DMACH_MAX,
- [25] = DMACH_I2S1_TX,
- [26] = DMACH_I2S1_RX,
- [27] = DMACH_I2S2_TX,
- [28] = DMACH_I2S2_RX,
- [29] = DMACH_PWM,
- [30] = DMACH_UART5_RX,
- [31] = DMACH_UART5_TX,
+struct dma_pl330_peri s5p6450_pdma_peri[32] = {
+ {
+ .peri_id = (u8)DMACH_UART0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART3_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART3_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART4_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART4_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_PCM0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_PCM0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_PCM1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_PCM1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_PCM2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_PCM2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_USI_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_USI_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_I2S1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_PWM,
+ }, {
+ .peri_id = (u8)DMACH_UART5_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART5_TX,
+ .rqtype = MEMTODEV,
},
};
-static struct platform_device s5p64x0_device_pdma = {
- .name = "s3c-pl330",
- .id = -1,
- .num_resources = ARRAY_SIZE(s5p64x0_pdma_resource),
- .resource = s5p64x0_pdma_resource,
- .dev = {
+struct dma_pl330_platdata s5p6450_pdma_pdata = {
+ .nr_valid_peri = ARRAY_SIZE(s5p6450_pdma_peri),
+ .peri = s5p6450_pdma_peri,
+};
+
+struct amba_device s5p64x0_device_pdma = {
+ .dev = {
+ .init_name = "dma-pl330",
.dma_mask = &dma_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
+ .res = {
+ .start = S5P64X0_PA_PDMA,
+ .end = S5P64X0_PA_PDMA + SZ_4K,
+ .flags = IORESOURCE_MEM,
+ },
+ .irq = {IRQ_DMA0, NO_IRQ},
+ .periphid = 0x00041330,
};
static int __init s5p64x0_dma_init(void)
@@ -139,7 +232,7 @@ static int __init s5p64x0_dma_init(void)
else
s5p64x0_device_pdma.dev.platform_data = &s5p6440_pdma_pdata;
- platform_device_register(&s5p64x0_device_pdma);
+ amba_device_register(&s5p64x0_device_pdma, &iomem_resource);
return 0;
}
diff --git a/arch/arm/mach-s5p64x0/include/mach/dma.h b/arch/arm/mach-s5p64x0/include/mach/dma.h
index 81209eb1409..5a622af461d 100644
--- a/arch/arm/mach-s5p64x0/include/mach/dma.h
+++ b/arch/arm/mach-s5p64x0/include/mach/dma.h
@@ -20,7 +20,7 @@
#ifndef __MACH_DMA_H
#define __MACH_DMA_H
-/* This platform uses the common S3C DMA API driver for PL330 */
-#include <plat/s3c-dma-pl330.h>
+/* This platform uses the common common DMA API driver for PL330 */
+#include <plat/dma-pl330.h>
#endif /* __MACH_DMA_H */
diff --git a/arch/arm/mach-s5pc100/Kconfig b/arch/arm/mach-s5pc100/Kconfig
index e8a33c4b054..e538a4c67e9 100644
--- a/arch/arm/mach-s5pc100/Kconfig
+++ b/arch/arm/mach-s5pc100/Kconfig
@@ -10,7 +10,7 @@ if ARCH_S5PC100
config CPU_S5PC100
bool
select S5P_EXT_INT
- select S3C_PL330_DMA
+ select SAMSUNG_DMADEV
help
Enable S5PC100 CPU support
diff --git a/arch/arm/mach-s5pc100/clock.c b/arch/arm/mach-s5pc100/clock.c
index ff5cbb30de5..6527c05c5fa 100644
--- a/arch/arm/mach-s5pc100/clock.c
+++ b/arch/arm/mach-s5pc100/clock.c
@@ -33,6 +33,11 @@ static struct clk s5p_clk_otgphy = {
.name = "otg_phy",
};
+static struct clk dummy_apb_pclk = {
+ .name = "apb_pclk",
+ .id = -1,
+};
+
static struct clk *clk_src_mout_href_list[] = {
[0] = &s5p_clk_27m,
[1] = &clk_fin_hpll,
@@ -454,13 +459,13 @@ static struct clk init_clocks_off[] = {
.enable = s5pc100_d1_0_ctrl,
.ctrlbit = (1 << 2),
}, {
- .name = "pdma",
+ .name = "dma",
.devname = "s3c-pl330.1",
.parent = &clk_div_d1_bus.clk,
.enable = s5pc100_d1_0_ctrl,
.ctrlbit = (1 << 1),
}, {
- .name = "pdma",
+ .name = "dma",
.devname = "s3c-pl330.0",
.parent = &clk_div_d1_bus.clk,
.enable = s5pc100_d1_0_ctrl,
@@ -1276,5 +1281,7 @@ void __init s5pc100_register_clocks(void)
s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
+ s3c24xx_register_clock(&dummy_apb_pclk);
+
s3c_pwmclk_init();
}
diff --git a/arch/arm/mach-s5pc100/dma.c b/arch/arm/mach-s5pc100/dma.c
index bf4cd0fb97c..ef803e92d35 100644
--- a/arch/arm/mach-s5pc100/dma.c
+++ b/arch/arm/mach-s5pc100/dma.c
@@ -1,4 +1,8 @@
-/*
+/* linux/arch/arm/mach-s5pc100/dma.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
* Copyright (C) 2010 Samsung Electronics Co. Ltd.
* Jaswinder Singh <jassi.brar@samsung.com>
*
@@ -17,150 +21,245 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/pl330.h>
+#include <asm/irq.h>
#include <plat/devs.h>
+#include <plat/irqs.h>
#include <mach/map.h>
#include <mach/irqs.h>
-
-#include <plat/s3c-pl330-pdata.h>
+#include <mach/dma.h>
static u64 dma_dmamask = DMA_BIT_MASK(32);
-static struct resource s5pc100_pdma0_resource[] = {
- [0] = {
- .start = S5PC100_PA_PDMA0,
- .end = S5PC100_PA_PDMA0 + SZ_4K,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = IRQ_PDMA0,
- .end = IRQ_PDMA0,
- .flags = IORESOURCE_IRQ,
+struct dma_pl330_peri pdma0_peri[30] = {
+ {
+ .peri_id = (u8)DMACH_UART0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART3_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART3_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = DMACH_IRDA,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S0S_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_AC97_MICIN,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_AC97_PCMIN,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_AC97_PCMOUT,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_EXTERNAL,
+ }, {
+ .peri_id = (u8)DMACH_PWM,
+ }, {
+ .peri_id = (u8)DMACH_SPDIF,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_HSI_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_HSI_TX,
+ .rqtype = MEMTODEV,
},
};
-static struct s3c_pl330_platdata s5pc100_pdma0_pdata = {
- .peri = {
- [0] = DMACH_UART0_RX,
- [1] = DMACH_UART0_TX,
- [2] = DMACH_UART1_RX,
- [3] = DMACH_UART1_TX,
- [4] = DMACH_UART2_RX,
- [5] = DMACH_UART2_TX,
- [6] = DMACH_UART3_RX,
- [7] = DMACH_UART3_TX,
- [8] = DMACH_IRDA,
- [9] = DMACH_I2S0_RX,
- [10] = DMACH_I2S0_TX,
- [11] = DMACH_I2S0S_TX,
- [12] = DMACH_I2S1_RX,
- [13] = DMACH_I2S1_TX,
- [14] = DMACH_I2S2_RX,
- [15] = DMACH_I2S2_TX,
- [16] = DMACH_SPI0_RX,
- [17] = DMACH_SPI0_TX,
- [18] = DMACH_SPI1_RX,
- [19] = DMACH_SPI1_TX,
- [20] = DMACH_SPI2_RX,
- [21] = DMACH_SPI2_TX,
- [22] = DMACH_AC97_MICIN,
- [23] = DMACH_AC97_PCMIN,
- [24] = DMACH_AC97_PCMOUT,
- [25] = DMACH_EXTERNAL,
- [26] = DMACH_PWM,
- [27] = DMACH_SPDIF,
- [28] = DMACH_HSI_RX,
- [29] = DMACH_HSI_TX,
- [30] = DMACH_MAX,
- [31] = DMACH_MAX,
- },
+struct dma_pl330_platdata s5pc100_pdma0_pdata = {
+ .nr_valid_peri = ARRAY_SIZE(pdma0_peri),
+ .peri = pdma0_peri,
};
-static struct platform_device s5pc100_device_pdma0 = {
- .name = "s3c-pl330",
- .id = 0,
- .num_resources = ARRAY_SIZE(s5pc100_pdma0_resource),
- .resource = s5pc100_pdma0_resource,
- .dev = {
+struct amba_device s5pc100_device_pdma0 = {
+ .dev = {
+ .init_name = "dma-pl330.0",
.dma_mask = &dma_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &s5pc100_pdma0_pdata,
},
-};
-
-static struct resource s5pc100_pdma1_resource[] = {
- [0] = {
- .start = S5PC100_PA_PDMA1,
- .end = S5PC100_PA_PDMA1 + SZ_4K,
+ .res = {
+ .start = S5PC100_PA_PDMA0,
+ .end = S5PC100_PA_PDMA0 + SZ_4K,
.flags = IORESOURCE_MEM,
},
- [1] = {
- .start = IRQ_PDMA1,
- .end = IRQ_PDMA1,
- .flags = IORESOURCE_IRQ,
- },
+ .irq = {IRQ_PDMA0, NO_IRQ},
+ .periphid = 0x00041330,
};
-static struct s3c_pl330_platdata s5pc100_pdma1_pdata = {
- .peri = {
- [0] = DMACH_UART0_RX,
- [1] = DMACH_UART0_TX,
- [2] = DMACH_UART1_RX,
- [3] = DMACH_UART1_TX,
- [4] = DMACH_UART2_RX,
- [5] = DMACH_UART2_TX,
- [6] = DMACH_UART3_RX,
- [7] = DMACH_UART3_TX,
- [8] = DMACH_IRDA,
- [9] = DMACH_I2S0_RX,
- [10] = DMACH_I2S0_TX,
- [11] = DMACH_I2S0S_TX,
- [12] = DMACH_I2S1_RX,
- [13] = DMACH_I2S1_TX,
- [14] = DMACH_I2S2_RX,
- [15] = DMACH_I2S2_TX,
- [16] = DMACH_SPI0_RX,
- [17] = DMACH_SPI0_TX,
- [18] = DMACH_SPI1_RX,
- [19] = DMACH_SPI1_TX,
- [20] = DMACH_SPI2_RX,
- [21] = DMACH_SPI2_TX,
- [22] = DMACH_PCM0_RX,
- [23] = DMACH_PCM0_TX,
- [24] = DMACH_PCM1_RX,
- [25] = DMACH_PCM1_TX,
- [26] = DMACH_MSM_REQ0,
- [27] = DMACH_MSM_REQ1,
- [28] = DMACH_MSM_REQ2,
- [29] = DMACH_MSM_REQ3,
- [30] = DMACH_MAX,
- [31] = DMACH_MAX,
+struct dma_pl330_peri pdma1_peri[30] = {
+ {
+ .peri_id = (u8)DMACH_UART0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART3_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART3_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = DMACH_IRDA,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S0S_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_PCM0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_PCM1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_PCM1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_PCM1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_MSM_REQ0,
+ }, {
+ .peri_id = (u8)DMACH_MSM_REQ1,
+ }, {
+ .peri_id = (u8)DMACH_MSM_REQ2,
+ }, {
+ .peri_id = (u8)DMACH_MSM_REQ3,
},
};
-static struct platform_device s5pc100_device_pdma1 = {
- .name = "s3c-pl330",
- .id = 1,
- .num_resources = ARRAY_SIZE(s5pc100_pdma1_resource),
- .resource = s5pc100_pdma1_resource,
- .dev = {
+struct dma_pl330_platdata s5pc100_pdma1_pdata = {
+ .nr_valid_peri = ARRAY_SIZE(pdma1_peri),
+ .peri = pdma1_peri,
+};
+
+struct amba_device s5pc100_device_pdma1 = {
+ .dev = {
+ .init_name = "dma-pl330.1",
.dma_mask = &dma_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &s5pc100_pdma1_pdata,
},
-};
-
-static struct platform_device *s5pc100_dmacs[] __initdata = {
- &s5pc100_device_pdma0,
- &s5pc100_device_pdma1,
+ .res = {
+ .start = S5PC100_PA_PDMA1,
+ .end = S5PC100_PA_PDMA1 + SZ_4K,
+ .flags = IORESOURCE_MEM,
+ },
+ .irq = {IRQ_PDMA1, NO_IRQ},
+ .periphid = 0x00041330,
};
static int __init s5pc100_dma_init(void)
{
- platform_add_devices(s5pc100_dmacs, ARRAY_SIZE(s5pc100_dmacs));
+ amba_device_register(&s5pc100_device_pdma0, &iomem_resource);
return 0;
}
diff --git a/arch/arm/mach-s5pc100/include/mach/dma.h b/arch/arm/mach-s5pc100/include/mach/dma.h
index 81209eb1409..201842a3769 100644
--- a/arch/arm/mach-s5pc100/include/mach/dma.h
+++ b/arch/arm/mach-s5pc100/include/mach/dma.h
@@ -20,7 +20,7 @@
#ifndef __MACH_DMA_H
#define __MACH_DMA_H
-/* This platform uses the common S3C DMA API driver for PL330 */
-#include <plat/s3c-dma-pl330.h>
+/* This platform uses the common DMA API driver for PL330 */
+#include <plat/dma-pl330.h>
#endif /* __MACH_DMA_H */
diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
index aaeb44a7371..e3ebe96923c 100644
--- a/arch/arm/mach-s5pv210/Kconfig
+++ b/arch/arm/mach-s5pv210/Kconfig
@@ -11,7 +11,7 @@ if ARCH_S5PV210
config CPU_S5PV210
bool
- select S3C_PL330_DMA
+ select SAMSUNG_DMADEV
select S5P_EXT_INT
select S5P_HRT
help
diff --git a/arch/arm/mach-s5pv210/clock.c b/arch/arm/mach-s5pv210/clock.c
index f5f8fa89679..1ab34000cc7 100644
--- a/arch/arm/mach-s5pv210/clock.c
+++ b/arch/arm/mach-s5pv210/clock.c
@@ -203,6 +203,11 @@ static struct clk clk_pcmcdclk2 = {
.name = "pcmcdclk",
};
+static struct clk dummy_apb_pclk = {
+ .name = "apb_pclk",
+ .id = -1,
+};
+
static struct clk *clkset_vpllsrc_list[] = {
[0] = &clk_fin_vpll,
[1] = &clk_sclk_hdmi27m,
@@ -289,13 +294,13 @@ static struct clk_ops clk_fout_apll_ops = {
static struct clk init_clocks_off[] = {
{
- .name = "pdma",
+ .name = "dma",
.devname = "s3c-pl330.0",
.parent = &clk_hclk_psys.clk,
.enable = s5pv210_clk_ip0_ctrl,
.ctrlbit = (1 << 3),
}, {
- .name = "pdma",
+ .name = "dma",
.devname = "s3c-pl330.1",
.parent = &clk_hclk_psys.clk,
.enable = s5pv210_clk_ip0_ctrl,
@@ -1159,5 +1164,6 @@ void __init s5pv210_register_clocks(void)
s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
+ s3c24xx_register_clock(&dummy_apb_pclk);
s3c_pwmclk_init();
}
diff --git a/arch/arm/mach-s5pv210/dma.c b/arch/arm/mach-s5pv210/dma.c
index 497d3439a14..f79d0b06cbf 100644
--- a/arch/arm/mach-s5pv210/dma.c
+++ b/arch/arm/mach-s5pv210/dma.c
@@ -1,4 +1,8 @@
-/*
+/* linux/arch/arm/mach-s5pv210/dma.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
* Copyright (C) 2010 Samsung Electronics Co. Ltd.
* Jaswinder Singh <jassi.brar@samsung.com>
*
@@ -17,151 +21,239 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/pl330.h>
+#include <asm/irq.h>
#include <plat/devs.h>
#include <plat/irqs.h>
#include <mach/map.h>
#include <mach/irqs.h>
-
-#include <plat/s3c-pl330-pdata.h>
+#include <mach/dma.h>
static u64 dma_dmamask = DMA_BIT_MASK(32);
-static struct resource s5pv210_pdma0_resource[] = {
- [0] = {
- .start = S5PV210_PA_PDMA0,
- .end = S5PV210_PA_PDMA0 + SZ_4K,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = IRQ_PDMA0,
- .end = IRQ_PDMA0,
- .flags = IORESOURCE_IRQ,
+struct dma_pl330_peri pdma0_peri[28] = {
+ {
+ .peri_id = (u8)DMACH_UART0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART3_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART3_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S0S_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_AC97_MICIN,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_AC97_PCMIN,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_AC97_PCMOUT,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_PWM,
+ }, {
+ .peri_id = (u8)DMACH_SPDIF,
+ .rqtype = MEMTODEV,
},
};
-static struct s3c_pl330_platdata s5pv210_pdma0_pdata = {
- .peri = {
- [0] = DMACH_UART0_RX,
- [1] = DMACH_UART0_TX,
- [2] = DMACH_UART1_RX,
- [3] = DMACH_UART1_TX,
- [4] = DMACH_UART2_RX,
- [5] = DMACH_UART2_TX,
- [6] = DMACH_UART3_RX,
- [7] = DMACH_UART3_TX,
- [8] = DMACH_MAX,
- [9] = DMACH_I2S0_RX,
- [10] = DMACH_I2S0_TX,
- [11] = DMACH_I2S0S_TX,
- [12] = DMACH_I2S1_RX,
- [13] = DMACH_I2S1_TX,
- [14] = DMACH_MAX,
- [15] = DMACH_MAX,
- [16] = DMACH_SPI0_RX,
- [17] = DMACH_SPI0_TX,
- [18] = DMACH_SPI1_RX,
- [19] = DMACH_SPI1_TX,
- [20] = DMACH_MAX,
- [21] = DMACH_MAX,
- [22] = DMACH_AC97_MICIN,
- [23] = DMACH_AC97_PCMIN,
- [24] = DMACH_AC97_PCMOUT,
- [25] = DMACH_MAX,
- [26] = DMACH_PWM,
- [27] = DMACH_SPDIF,
- [28] = DMACH_MAX,
- [29] = DMACH_MAX,
- [30] = DMACH_MAX,
- [31] = DMACH_MAX,
- },
+struct dma_pl330_platdata s5pv210_pdma0_pdata = {
+ .nr_valid_peri = ARRAY_SIZE(pdma0_peri),
+ .peri = pdma0_peri,
};
-static struct platform_device s5pv210_device_pdma0 = {
- .name = "s3c-pl330",
- .id = 0,
- .num_resources = ARRAY_SIZE(s5pv210_pdma0_resource),
- .resource = s5pv210_pdma0_resource,
- .dev = {
+struct amba_device s5pv210_device_pdma0 = {
+ .dev = {
+ .init_name = "dma-pl330.0",
.dma_mask = &dma_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &s5pv210_pdma0_pdata,
},
-};
-
-static struct resource s5pv210_pdma1_resource[] = {
- [0] = {
- .start = S5PV210_PA_PDMA1,
- .end = S5PV210_PA_PDMA1 + SZ_4K,
+ .res = {
+ .start = S5PV210_PA_PDMA0,
+ .end = S5PV210_PA_PDMA0 + SZ_4K,
.flags = IORESOURCE_MEM,
},
- [1] = {
- .start = IRQ_PDMA1,
- .end = IRQ_PDMA1,
- .flags = IORESOURCE_IRQ,
- },
+ .irq = {IRQ_PDMA0, NO_IRQ},
+ .periphid = 0x00041330,
};
-static struct s3c_pl330_platdata s5pv210_pdma1_pdata = {
- .peri = {
- [0] = DMACH_UART0_RX,
- [1] = DMACH_UART0_TX,
- [2] = DMACH_UART1_RX,
- [3] = DMACH_UART1_TX,
- [4] = DMACH_UART2_RX,
- [5] = DMACH_UART2_TX,
- [6] = DMACH_UART3_RX,
- [7] = DMACH_UART3_TX,
- [8] = DMACH_MAX,
- [9] = DMACH_I2S0_RX,
- [10] = DMACH_I2S0_TX,
- [11] = DMACH_I2S0S_TX,
- [12] = DMACH_I2S1_RX,
- [13] = DMACH_I2S1_TX,
- [14] = DMACH_I2S2_RX,
- [15] = DMACH_I2S2_TX,
- [16] = DMACH_SPI0_RX,
- [17] = DMACH_SPI0_TX,
- [18] = DMACH_SPI1_RX,
- [19] = DMACH_SPI1_TX,
- [20] = DMACH_MAX,
- [21] = DMACH_MAX,
- [22] = DMACH_PCM0_RX,
- [23] = DMACH_PCM0_TX,
- [24] = DMACH_PCM1_RX,
- [25] = DMACH_PCM1_TX,
- [26] = DMACH_MSM_REQ0,
- [27] = DMACH_MSM_REQ1,
- [28] = DMACH_MSM_REQ2,
- [29] = DMACH_MSM_REQ3,
- [30] = DMACH_PCM2_RX,
- [31] = DMACH_PCM2_TX,
+struct dma_pl330_peri pdma1_peri[32] = {
+ {
+ .peri_id = (u8)DMACH_UART0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_UART3_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_UART3_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S0S_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_I2S2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_I2S2_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_SPI1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_MAX,
+ }, {
+ .peri_id = (u8)DMACH_PCM0_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_PCM0_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_PCM1_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_PCM1_TX,
+ .rqtype = MEMTODEV,
+ }, {
+ .peri_id = (u8)DMACH_MSM_REQ0,
+ }, {
+ .peri_id = (u8)DMACH_MSM_REQ1,
+ }, {
+ .peri_id = (u8)DMACH_MSM_REQ2,
+ }, {
+ .peri_id = (u8)DMACH_MSM_REQ3,
+ }, {
+ .peri_id = (u8)DMACH_PCM2_RX,
+ .rqtype = DEVTOMEM,
+ }, {
+ .peri_id = (u8)DMACH_PCM2_TX,
+ .rqtype = MEMTODEV,
},
};
-static struct platform_device s5pv210_device_pdma1 = {
- .name = "s3c-pl330",
- .id = 1,
- .num_resources = ARRAY_SIZE(s5pv210_pdma1_resource),
- .resource = s5pv210_pdma1_resource,
- .dev = {
+struct dma_pl330_platdata s5pv210_pdma1_pdata = {
+ .nr_valid_peri = ARRAY_SIZE(pdma1_peri),
+ .peri = pdma1_peri,
+};
+
+struct amba_device s5pv210_device_pdma1 = {
+ .dev = {
+ .init_name = "dma-pl330.1",
.dma_mask = &dma_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &s5pv210_pdma1_pdata,
},
-};
-
-static struct platform_device *s5pv210_dmacs[] __initdata = {
- &s5pv210_device_pdma0,
- &s5pv210_device_pdma1,
+ .res = {
+ .start = S5PV210_PA_PDMA1,
+ .end = S5PV210_PA_PDMA1 + SZ_4K,
+ .flags = IORESOURCE_MEM,
+ },
+ .irq = {IRQ_PDMA1, NO_IRQ},
+ .periphid = 0x00041330,
};
static int __init s5pv210_dma_init(void)
{
- platform_add_devices(s5pv210_dmacs, ARRAY_SIZE(s5pv210_dmacs));
+ amba_device_register(&s5pv210_device_pdma0, &iomem_resource);
return 0;
}
diff --git a/arch/arm/mach-s5pv210/include/mach/dma.h b/arch/arm/mach-s5pv210/include/mach/dma.h
index 81209eb1409..201842a3769 100644
--- a/arch/arm/mach-s5pv210/include/mach/dma.h
+++ b/arch/arm/mach-s5pv210/include/mach/dma.h
@@ -20,7 +20,7 @@
#ifndef __MACH_DMA_H
#define __MACH_DMA_H
-/* This platform uses the common S3C DMA API driver for PL330 */
-#include <plat/s3c-dma-pl330.h>
+/* This platform uses the common DMA API driver for PL330 */
+#include <plat/dma-pl330.h>
#endif /* __MACH_DMA_H */
diff --git a/arch/arm/plat-s3c24xx/dma.c b/arch/arm/plat-s3c24xx/dma.c
index 539bd0e3def..53754bcf15a 100644
--- a/arch/arm/plat-s3c24xx/dma.c
+++ b/arch/arm/plat-s3c24xx/dma.c
@@ -1094,14 +1094,14 @@ EXPORT_SYMBOL(s3c2410_dma_config);
*
* configure the dma source/destination hardware type and address
*
- * source: S3C2410_DMASRC_HW: source is hardware
- * S3C2410_DMASRC_MEM: source is memory
+ * source: DMA_FROM_DEVICE: source is hardware
+ * DMA_TO_DEVICE: source is memory
*
* devaddr: physical address of the source
*/
int s3c2410_dma_devconfig(enum dma_ch channel,
- enum s3c2410_dmasrc source,
+ enum dma_data_direction source,
unsigned long devaddr)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
@@ -1131,7 +1131,7 @@ int s3c2410_dma_devconfig(enum dma_ch channel,
hwcfg |= S3C2410_DISRCC_INC;
switch (source) {
- case S3C2410_DMASRC_HW:
+ case DMA_FROM_DEVICE:
/* source is hardware */
pr_debug("%s: hw source, devaddr=%08lx, hwcfg=%d\n",
__func__, devaddr, hwcfg);
@@ -1142,7 +1142,7 @@ int s3c2410_dma_devconfig(enum dma_ch channel,
chan->addr_reg = dma_regaddr(chan, S3C2410_DMA_DIDST);
break;
- case S3C2410_DMASRC_MEM:
+ case DMA_TO_DEVICE:
/* source is memory */
pr_debug("%s: mem source, devaddr=%08lx, hwcfg=%d\n",
__func__, devaddr, hwcfg);
diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
index 3895f9aff0d..7a96198e3a7 100644
--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -295,11 +295,14 @@ config S3C_DMA
help
Internal configuration for S3C DMA core
-config S3C_PL330_DMA
+config SAMSUNG_DMADEV
bool
- select PL330
+ select DMADEVICES
+ select PL330_DMA if (CPU_EXYNOS4210 || CPU_S5PV210 || CPU_S5PC100 || \
+ CPU_S5P6450 || CPU_S5P6440)
+ select ARM_AMBA
help
- S3C DMA API Driver for PL330 DMAC.
+ Use DMA device engine for PL330 DMAC.
comment "Power management"
diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
index 09adb84f271..3dd5dbad55c 100644
--- a/arch/arm/plat-samsung/Makefile
+++ b/arch/arm/plat-samsung/Makefile
@@ -62,9 +62,9 @@ obj-$(CONFIG_SAMSUNG_DEV_BACKLIGHT) += dev-backlight.o
# DMA support
-obj-$(CONFIG_S3C_DMA) += dma.o
+obj-$(CONFIG_S3C_DMA) += dma.o s3c-dma-ops.o
-obj-$(CONFIG_S3C_PL330_DMA) += s3c-pl330.o
+obj-$(CONFIG_SAMSUNG_DMADEV) += dma-ops.o
# PM support
diff --git a/arch/arm/plat-samsung/dma-ops.c b/arch/arm/plat-samsung/dma-ops.c
new file mode 100644
index 00000000000..6e3d9abc9e2
--- /dev/null
+++ b/arch/arm/plat-samsung/dma-ops.c
@@ -0,0 +1,131 @@
+/* linux/arch/arm/plat-samsung/dma-ops.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Samsung DMA Operations
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/amba/pl330.h>
+#include <linux/scatterlist.h>
+
+#include <mach/dma.h>
+
+static inline bool pl330_filter(struct dma_chan *chan, void *param)
+{
+ struct dma_pl330_peri *peri = chan->private;
+ return peri->peri_id == (unsigned)param;
+}
+
+static unsigned samsung_dmadev_request(enum dma_ch dma_ch,
+ struct samsung_dma_info *info)
+{
+ struct dma_chan *chan;
+ dma_cap_mask_t mask;
+ struct dma_slave_config slave_config;
+
+ dma_cap_zero(mask);
+ dma_cap_set(info->cap, mask);
+
+ chan = dma_request_channel(mask, pl330_filter, (void *)dma_ch);
+
+ if (info->direction == DMA_FROM_DEVICE) {
+ memset(&slave_config, 0, sizeof(struct dma_slave_config));
+ slave_config.direction = info->direction;
+ slave_config.src_addr = info->fifo;
+ slave_config.src_addr_width = info->width;
+ slave_config.src_maxburst = 1;
+ dmaengine_slave_config(chan, &slave_config);
+ } else if (info->direction == DMA_TO_DEVICE) {
+ memset(&slave_config, 0, sizeof(struct dma_slave_config));
+ slave_config.direction = info->direction;
+ slave_config.dst_addr = info->fifo;
+ slave_config.dst_addr_width = info->width;
+ slave_config.dst_maxburst = 1;
+ dmaengine_slave_config(chan, &slave_config);
+ }
+
+ return (unsigned)chan;
+}
+
+static int samsung_dmadev_release(unsigned ch,
+ struct s3c2410_dma_client *client)
+{
+ dma_release_channel((struct dma_chan *)ch);
+
+ return 0;
+}
+
+static int samsung_dmadev_prepare(unsigned ch,
+ struct samsung_dma_prep_info *info)
+{
+ struct scatterlist sg;
+ struct dma_chan *chan = (struct dma_chan *)ch;
+ struct dma_async_tx_descriptor *desc;
+
+ switch (info->cap) {
+ case DMA_SLAVE:
+ sg_init_table(&sg, 1);
+ sg_dma_len(&sg) = info->len;
+ sg_set_page(&sg, pfn_to_page(PFN_DOWN(info->buf)),
+ info->len, offset_in_page(info->buf));
+ sg_dma_address(&sg) = info->buf;
+
+ desc = chan->device->device_prep_slave_sg(chan,
+ &sg, 1, info->direction, DMA_PREP_INTERRUPT);
+ break;
+ case DMA_CYCLIC:
+ desc = chan->device->device_prep_dma_cyclic(chan,
+ info->buf, info->len, info->period, info->direction);
+ break;
+ default:
+ dev_err(&chan->dev->device, "unsupported format\n");
+ return -EFAULT;
+ }
+
+ if (!desc) {
+ dev_err(&chan->dev->device, "cannot prepare cyclic dma\n");
+ return -EFAULT;
+ }
+
+ desc->callback = info->fp;
+ desc->callback_param = info->fp_param;
+
+ dmaengine_submit((struct dma_async_tx_descriptor *)desc);
+
+ return 0;
+}
+
+static inline int samsung_dmadev_trigger(unsigned ch)
+{
+ dma_async_issue_pending((struct dma_chan *)ch);
+
+ return 0;
+}
+
+static inline int samsung_dmadev_flush(unsigned ch)
+{
+ return dmaengine_terminate_all((struct dma_chan *)ch);
+}
+
+struct samsung_dma_ops dmadev_ops = {
+ .request = samsung_dmadev_request,
+ .release = samsung_dmadev_release,
+ .prepare = samsung_dmadev_prepare,
+ .trigger = samsung_dmadev_trigger,
+ .started = NULL,
+ .flush = samsung_dmadev_flush,
+ .stop = samsung_dmadev_flush,
+};
+
+void *samsung_dmadev_get_ops(void)
+{
+ return &dmadev_ops;
+}
+EXPORT_SYMBOL(samsung_dmadev_get_ops);
diff --git a/arch/arm/plat-samsung/include/plat/dma-ops.h b/arch/arm/plat-samsung/include/plat/dma-ops.h
new file mode 100644
index 00000000000..4c1a363526c
--- /dev/null
+++ b/arch/arm/plat-samsung/include/plat/dma-ops.h
@@ -0,0 +1,63 @@
+/* arch/arm/plat-samsung/include/plat/dma-ops.h
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Samsung DMA support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __SAMSUNG_DMA_OPS_H_
+#define __SAMSUNG_DMA_OPS_H_ __FILE__
+
+#include <linux/dmaengine.h>
+
+struct samsung_dma_prep_info {
+ enum dma_transaction_type cap;
+ enum dma_data_direction direction;
+ dma_addr_t buf;
+ unsigned long period;
+ unsigned long len;
+ void (*fp)(void *data);
+ void *fp_param;
+};
+
+struct samsung_dma_info {
+ enum dma_transaction_type cap;
+ enum dma_data_direction direction;
+ enum dma_slave_buswidth width;
+ dma_addr_t fifo;
+ struct s3c2410_dma_client *client;
+};
+
+struct samsung_dma_ops {
+ unsigned (*request)(enum dma_ch ch, struct samsung_dma_info *info);
+ int (*release)(unsigned ch, struct s3c2410_dma_client *client);
+ int (*prepare)(unsigned ch, struct samsung_dma_prep_info *info);
+ int (*trigger)(unsigned ch);
+ int (*started)(unsigned ch);
+ int (*flush)(unsigned ch);
+ int (*stop)(unsigned ch);
+};
+
+extern void *samsung_dmadev_get_ops(void);
+extern void *s3c_dma_get_ops(void);
+
+static inline void *__samsung_dma_get_ops(void)
+{
+ if (samsung_dma_is_dmadev())
+ return samsung_dmadev_get_ops();
+ else
+ return s3c_dma_get_ops();
+}
+
+/*
+ * samsung_dma_get_ops
+ * get the set of samsung dma operations
+ */
+#define samsung_dma_get_ops() __samsung_dma_get_ops()
+
+#endif /* __SAMSUNG_DMA_OPS_H_ */
diff --git a/arch/arm/plat-samsung/include/plat/s3c-dma-pl330.h b/arch/arm/plat-samsung/include/plat/dma-pl330.h
index 81074421312..2e55e595867 100644
--- a/arch/arm/plat-samsung/include/plat/s3c-dma-pl330.h
+++ b/arch/arm/plat-samsung/include/plat/dma-pl330.h
@@ -8,11 +8,8 @@
* (at your option) any later version.
*/
-#ifndef __S3C_DMA_PL330_H_
-#define __S3C_DMA_PL330_H_
-
-#define S3C2410_DMAF_AUTOSTART (1 << 0)
-#define S3C2410_DMAF_CIRCULAR (1 << 1)
+#ifndef __DMA_PL330_H_
+#define __DMA_PL330_H_ __FILE__
/*
* PL330 can assign any channel to communicate with
@@ -20,7 +17,7 @@
* For the sake of consistency across client drivers,
* We keep the channel names unchanged and only add
* missing peripherals are added.
- * Order is not important since S3C PL330 API driver
+ * Order is not important since DMA PL330 API driver
* use these just as IDs.
*/
enum dma_ch {
@@ -88,11 +85,20 @@ enum dma_ch {
DMACH_MAX,
};
-static inline bool s3c_dma_has_circular(void)
+struct s3c2410_dma_client {
+ char *name;
+};
+
+static inline bool samsung_dma_has_circular(void)
+{
+ return true;
+}
+
+static inline bool samsung_dma_is_dmadev(void)
{
return true;
}
-#include <plat/dma.h>
+#include <plat/dma-ops.h>
-#endif /* __S3C_DMA_PL330_H_ */
+#endif /* __DMA_PL330_H_ */
diff --git a/arch/arm/plat-samsung/include/plat/dma-s3c24xx.h b/arch/arm/plat-samsung/include/plat/dma-s3c24xx.h
index ab9bce637cb..1c1ed548125 100644
--- a/arch/arm/plat-samsung/include/plat/dma-s3c24xx.h
+++ b/arch/arm/plat-samsung/include/plat/dma-s3c24xx.h
@@ -41,7 +41,7 @@ struct s3c24xx_dma_selection {
void (*direction)(struct s3c2410_dma_chan *chan,
struct s3c24xx_dma_map *map,
- enum s3c2410_dmasrc dir);
+ enum dma_data_direction dir);
};
extern int s3c24xx_dma_init_map(struct s3c24xx_dma_selection *sel);
diff --git a/arch/arm/plat-samsung/include/plat/dma.h b/arch/arm/plat-samsung/include/plat/dma.h
index 8c273b7a6f5..b9061128abd 100644
--- a/arch/arm/plat-samsung/include/plat/dma.h
+++ b/arch/arm/plat-samsung/include/plat/dma.h
@@ -10,17 +10,14 @@
* published by the Free Software Foundation.
*/
+#include <linux/dma-mapping.h>
+
enum s3c2410_dma_buffresult {
S3C2410_RES_OK,
S3C2410_RES_ERR,
S3C2410_RES_ABORT
};
-enum s3c2410_dmasrc {
- S3C2410_DMASRC_HW, /* source is memory */
- S3C2410_DMASRC_MEM /* source is hardware */
-};
-
/* enum s3c2410_chan_op
*
* operation codes passed to the DMA code by the user, and also used
@@ -112,7 +109,7 @@ extern int s3c2410_dma_config(enum dma_ch channel, int xferunit);
*/
extern int s3c2410_dma_devconfig(enum dma_ch channel,
- enum s3c2410_dmasrc source, unsigned long devaddr);
+ enum dma_data_direction source, unsigned long devaddr);
/* s3c2410_dma_getposition
*
@@ -126,3 +123,4 @@ extern int s3c2410_dma_set_opfn(enum dma_ch, s3c2410_dma_opfn_t rtn);
extern int s3c2410_dma_set_buffdone_fn(enum dma_ch, s3c2410_dma_cbfn_t rtn);
+#include <plat/dma-ops.h>
diff --git a/arch/arm/plat-samsung/include/plat/s3c-pl330-pdata.h b/arch/arm/plat-samsung/include/plat/s3c-pl330-pdata.h
deleted file mode 100644
index bf5e2a9d408..00000000000
--- a/arch/arm/plat-samsung/include/plat/s3c-pl330-pdata.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/* linux/arch/arm/plat-samsung/include/plat/s3c-pl330-pdata.h
- *
- * Copyright (C) 2010 Samsung Electronics Co. Ltd.
- * Jaswinder Singh <jassi.brar@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef __S3C_PL330_PDATA_H
-#define __S3C_PL330_PDATA_H
-
-#include <plat/s3c-dma-pl330.h>
-
-/*
- * Every PL330 DMAC has max 32 peripheral interfaces,
- * of which some may be not be really used in your
- * DMAC's configuration.
- * Populate this array of 32 peri i/fs with relevant
- * channel IDs for used peri i/f and DMACH_MAX for
- * those unused.
- *
- * The platforms just need to provide this info
- * to the S3C DMA API driver for PL330.
- */
-struct s3c_pl330_platdata {
- enum dma_ch peri[32];
-};
-
-#endif /* __S3C_PL330_PDATA_H */
diff --git a/arch/arm/plat-samsung/s3c-dma-ops.c b/arch/arm/plat-samsung/s3c-dma-ops.c
new file mode 100644
index 00000000000..582333c7058
--- /dev/null
+++ b/arch/arm/plat-samsung/s3c-dma-ops.c
@@ -0,0 +1,130 @@
+/* linux/arch/arm/plat-samsung/s3c-dma-ops.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Samsung S3C-DMA Operations
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <mach/dma.h>
+
+struct cb_data {
+ void (*fp) (void *);
+ void *fp_param;
+ unsigned ch;
+ struct list_head node;
+};
+
+static LIST_HEAD(dma_list);
+
+static void s3c_dma_cb(struct s3c2410_dma_chan *channel, void *param,
+ int size, enum s3c2410_dma_buffresult res)
+{
+ struct cb_data *data = param;
+
+ data->fp(data->fp_param);
+}
+
+static unsigned s3c_dma_request(enum dma_ch dma_ch,
+ struct samsung_dma_info *info)
+{
+ struct cb_data *data;
+
+ if (s3c2410_dma_request(dma_ch, info->client, NULL) < 0) {
+ s3c2410_dma_free(dma_ch, info->client);
+ return 0;
+ }
+
+ data = kzalloc(sizeof(struct cb_data), GFP_KERNEL);
+ data->ch = dma_ch;
+ list_add_tail(&data->node, &dma_list);
+
+ s3c2410_dma_devconfig(dma_ch, info->direction, info->fifo);
+
+ if (info->cap == DMA_CYCLIC)
+ s3c2410_dma_setflags(dma_ch, S3C2410_DMAF_CIRCULAR);
+
+ s3c2410_dma_config(dma_ch, info->width);
+
+ return (unsigned)dma_ch;
+}
+
+static int s3c_dma_release(unsigned ch, struct s3c2410_dma_client *client)
+{
+ struct cb_data *data;
+
+ list_for_each_entry(data, &dma_list, node)
+ if (data->ch == ch)
+ break;
+ list_del(&data->node);
+
+ s3c2410_dma_free(ch, client);
+ kfree(data);
+
+ return 0;
+}
+
+static int s3c_dma_prepare(unsigned ch, struct samsung_dma_prep_info *info)
+{
+ struct cb_data *data;
+ int len = (info->cap == DMA_CYCLIC) ? info->period : info->len;
+
+ list_for_each_entry(data, &dma_list, node)
+ if (data->ch == ch)
+ break;
+
+ if (!data->fp) {
+ s3c2410_dma_set_buffdone_fn(ch, s3c_dma_cb);
+ data->fp = info->fp;
+ data->fp_param = info->fp_param;
+ }
+
+ s3c2410_dma_enqueue(ch, (void *)data, info->buf, len);
+
+ return 0;
+}
+
+static inline int s3c_dma_trigger(unsigned ch)
+{
+ return s3c2410_dma_ctrl(ch, S3C2410_DMAOP_START);
+}
+
+static inline int s3c_dma_started(unsigned ch)
+{
+ return s3c2410_dma_ctrl(ch, S3C2410_DMAOP_STARTED);
+}
+
+static inline int s3c_dma_flush(unsigned ch)
+{
+ return s3c2410_dma_ctrl(ch, S3C2410_DMAOP_FLUSH);
+}
+
+static inline int s3c_dma_stop(unsigned ch)
+{
+ return s3c2410_dma_ctrl(ch, S3C2410_DMAOP_STOP);
+}
+
+static struct samsung_dma_ops s3c_dma_ops = {
+ .request = s3c_dma_request,
+ .release = s3c_dma_release,
+ .prepare = s3c_dma_prepare,
+ .trigger = s3c_dma_trigger,
+ .started = s3c_dma_started,
+ .flush = s3c_dma_flush,
+ .stop = s3c_dma_stop,
+};
+
+void *s3c_dma_get_ops(void)
+{
+ return &s3c_dma_ops;
+}
+EXPORT_SYMBOL(s3c_dma_get_ops);
diff --git a/arch/arm/plat-samsung/s3c-pl330.c b/arch/arm/plat-samsung/s3c-pl330.c
deleted file mode 100644
index f85638c6f5a..00000000000
--- a/arch/arm/plat-samsung/s3c-pl330.c
+++ /dev/null
@@ -1,1244 +0,0 @@
-/* linux/arch/arm/plat-samsung/s3c-pl330.c
- *
- * Copyright (C) 2010 Samsung Electronics Co. Ltd.
- * Jaswinder Singh <jassi.brar@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-
-#include <asm/hardware/pl330.h>
-
-#include <plat/s3c-pl330-pdata.h>
-
-/**
- * struct s3c_pl330_dmac - Logical representation of a PL330 DMAC.
- * @busy_chan: Number of channels currently busy.
- * @peri: List of IDs of peripherals this DMAC can work with.
- * @node: To attach to the global list of DMACs.
- * @pi: PL330 configuration info for the DMAC.
- * @kmcache: Pool to quickly allocate xfers for all channels in the dmac.
- * @clk: Pointer of DMAC operation clock.
- */
-struct s3c_pl330_dmac {
- unsigned busy_chan;
- enum dma_ch *peri;
- struct list_head node;
- struct pl330_info *pi;
- struct kmem_cache *kmcache;
- struct clk *clk;
-};
-
-/**
- * struct s3c_pl330_xfer - A request submitted by S3C DMA clients.
- * @token: Xfer ID provided by the client.
- * @node: To attach to the list of xfers on a channel.
- * @px: Xfer for PL330 core.
- * @chan: Owner channel of this xfer.
- */
-struct s3c_pl330_xfer {
- void *token;
- struct list_head node;
- struct pl330_xfer px;
- struct s3c_pl330_chan *chan;
-};
-
-/**
- * struct s3c_pl330_chan - Logical channel to communicate with
- * a Physical peripheral.
- * @pl330_chan_id: Token of a hardware channel thread of PL330 DMAC.
- * NULL if the channel is available to be acquired.
- * @id: ID of the peripheral that this channel can communicate with.
- * @options: Options specified by the client.
- * @sdaddr: Address provided via s3c2410_dma_devconfig.
- * @node: To attach to the global list of channels.
- * @lrq: Pointer to the last submitted pl330_req to PL330 core.
- * @xfer_list: To manage list of xfers enqueued.
- * @req: Two requests to communicate with the PL330 engine.
- * @callback_fn: Callback function to the client.
- * @rqcfg: Channel configuration for the xfers.
- * @xfer_head: Pointer to the xfer to be next executed.
- * @dmac: Pointer to the DMAC that manages this channel, NULL if the
- * channel is available to be acquired.
- * @client: Client of this channel. NULL if the
- * channel is available to be acquired.
- */
-struct s3c_pl330_chan {
- void *pl330_chan_id;
- enum dma_ch id;
- unsigned int options;
- unsigned long sdaddr;
- struct list_head node;
- struct pl330_req *lrq;
- struct list_head xfer_list;
- struct pl330_req req[2];
- s3c2410_dma_cbfn_t callback_fn;
- struct pl330_reqcfg rqcfg;
- struct s3c_pl330_xfer *xfer_head;
- struct s3c_pl330_dmac *dmac;
- struct s3c2410_dma_client *client;
-};
-
-/* All DMACs in the platform */
-static LIST_HEAD(dmac_list);
-
-/* All channels to peripherals in the platform */
-static LIST_HEAD(chan_list);
-
-/*
- * Since we add resources(DMACs and Channels) to the global pool,
- * we need to guard access to the resources using a global lock
- */
-static DEFINE_SPINLOCK(res_lock);
-
-/* Returns the channel with ID 'id' in the chan_list */
-static struct s3c_pl330_chan *id_to_chan(const enum dma_ch id)
-{
- struct s3c_pl330_chan *ch;
-
- list_for_each_entry(ch, &chan_list, node)
- if (ch->id == id)
- return ch;
-
- return NULL;
-}
-
-/* Allocate a new channel with ID 'id' and add to chan_list */
-static void chan_add(const enum dma_ch id)
-{
- struct s3c_pl330_chan *ch = id_to_chan(id);
-
- /* Return if the channel already exists */
- if (ch)
- return;
-
- ch = kmalloc(sizeof(*ch), GFP_KERNEL);
- /* Return silently to work with other channels */
- if (!ch)
- return;
-
- ch->id = id;
- ch->dmac = NULL;
-
- list_add_tail(&ch->node, &chan_list);
-}
-
-/* If the channel is not yet acquired by any client */
-static bool chan_free(struct s3c_pl330_chan *ch)
-{
- if (!ch)
- return false;
-
- /* Channel points to some DMAC only when it's acquired */
- return ch->dmac ? false : true;
-}
-
-/*
- * Returns 0 is peripheral i/f is invalid or not present on the dmac.
- * Index + 1, otherwise.
- */
-static unsigned iface_of_dmac(struct s3c_pl330_dmac *dmac, enum dma_ch ch_id)
-{
- enum dma_ch *id = dmac->peri;
- int i;
-
- /* Discount invalid markers */
- if (ch_id == DMACH_MAX)
- return 0;
-
- for (i = 0; i < PL330_MAX_PERI; i++)
- if (id[i] == ch_id)
- return i + 1;
-
- return 0;
-}
-
-/* If all channel threads of the DMAC are busy */
-static inline bool dmac_busy(struct s3c_pl330_dmac *dmac)
-{
- struct pl330_info *pi = dmac->pi;
-
- return (dmac->busy_chan < pi->pcfg.num_chan) ? false : true;
-}
-
-/*
- * Returns the number of free channels that
- * can be handled by this dmac only.
- */
-static unsigned ch_onlyby_dmac(struct s3c_pl330_dmac *dmac)
-{
- enum dma_ch *id = dmac->peri;
- struct s3c_pl330_dmac *d;
- struct s3c_pl330_chan *ch;
- unsigned found, count = 0;
- enum dma_ch p;
- int i;
-
- for (i = 0; i < PL330_MAX_PERI; i++) {
- p = id[i];
- ch = id_to_chan(p);
-
- if (p == DMACH_MAX || !chan_free(ch))
- continue;
-
- found = 0;
- list_for_each_entry(d, &dmac_list, node) {
- if (d != dmac && iface_of_dmac(d, ch->id)) {
- found = 1;
- break;
- }
- }
- if (!found)
- count++;
- }
-
- return count;
-}
-
-/*
- * Measure of suitability of 'dmac' handling 'ch'
- *
- * 0 indicates 'dmac' can not handle 'ch' either
- * because it is not supported by the hardware or
- * because all dmac channels are currently busy.
- *
- * >0 vlaue indicates 'dmac' has the capability.
- * The bigger the value the more suitable the dmac.
- */
-#define MAX_SUIT UINT_MAX
-#define MIN_SUIT 0
-
-static unsigned suitablility(struct s3c_pl330_dmac *dmac,
- struct s3c_pl330_chan *ch)
-{
- struct pl330_info *pi = dmac->pi;
- enum dma_ch *id = dmac->peri;
- struct s3c_pl330_dmac *d;
- unsigned s;
- int i;
-
- s = MIN_SUIT;
- /* If all the DMAC channel threads are busy */
- if (dmac_busy(dmac))
- return s;
-
- for (i = 0; i < PL330_MAX_PERI; i++)
- if (id[i] == ch->id)
- break;
-
- /* If the 'dmac' can't talk to 'ch' */
- if (i == PL330_MAX_PERI)
- return s;
-
- s = MAX_SUIT;
- list_for_each_entry(d, &dmac_list, node) {
- /*
- * If some other dmac can talk to this
- * peri and has some channel free.
- */
- if (d != dmac && iface_of_dmac(d, ch->id) && !dmac_busy(d)) {
- s = 0;
- break;
- }
- }
- if (s)
- return s;
-
- s = 100;
-
- /* Good if free chans are more, bad otherwise */
- s += (pi->pcfg.num_chan - dmac->busy_chan) - ch_onlyby_dmac(dmac);
-
- return s;
-}
-
-/* More than one DMAC may have capability to transfer data with the
- * peripheral. This function assigns most suitable DMAC to manage the
- * channel and hence communicate with the peripheral.
- */
-static struct s3c_pl330_dmac *map_chan_to_dmac(struct s3c_pl330_chan *ch)
-{
- struct s3c_pl330_dmac *d, *dmac = NULL;
- unsigned sn, sl = MIN_SUIT;
-
- list_for_each_entry(d, &dmac_list, node) {
- sn = suitablility(d, ch);
-
- if (sn == MAX_SUIT)
- return d;
-
- if (sn > sl)
- dmac = d;
- }
-
- return dmac;
-}
-
-/* Acquire the channel for peripheral 'id' */
-static struct s3c_pl330_chan *chan_acquire(const enum dma_ch id)
-{
- struct s3c_pl330_chan *ch = id_to_chan(id);
- struct s3c_pl330_dmac *dmac;
-
- /* If the channel doesn't exist or is already acquired */
- if (!ch || !chan_free(ch)) {
- ch = NULL;
- goto acq_exit;
- }
-
- dmac = map_chan_to_dmac(ch);
- /* If couldn't map */
- if (!dmac) {
- ch = NULL;
- goto acq_exit;
- }
-
- dmac->busy_chan++;
- ch->dmac = dmac;
-
-acq_exit:
- return ch;
-}
-
-/* Delete xfer from the queue */
-static inline void del_from_queue(struct s3c_pl330_xfer *xfer)
-{
- struct s3c_pl330_xfer *t;
- struct s3c_pl330_chan *ch;
- int found;
-
- if (!xfer)
- return;
-
- ch = xfer->chan;
-
- /* Make sure xfer is in the queue */
- found = 0;
- list_for_each_entry(t, &ch->xfer_list, node)
- if (t == xfer) {
- found = 1;
- break;
- }
-
- if (!found)
- return;
-
- /* If xfer is last entry in the queue */
- if (xfer->node.next == &ch->xfer_list)
- t = list_entry(ch->xfer_list.next,
- struct s3c_pl330_xfer, node);
- else
- t = list_entry(xfer->node.next,
- struct s3c_pl330_xfer, node);
-
- /* If there was only one node left */
- if (t == xfer)
- ch->xfer_head = NULL;
- else if (ch->xfer_head == xfer)
- ch->xfer_head = t;
-
- list_del(&xfer->node);
-}
-
-/* Provides pointer to the next xfer in the queue.
- * If CIRCULAR option is set, the list is left intact,
- * otherwise the xfer is removed from the list.
- * Forced delete 'pluck' can be set to override the CIRCULAR option.
- */
-static struct s3c_pl330_xfer *get_from_queue(struct s3c_pl330_chan *ch,
- int pluck)
-{
- struct s3c_pl330_xfer *xfer = ch->xfer_head;
-
- if (!xfer)
- return NULL;
-
- /* If xfer is last entry in the queue */
- if (xfer->node.next == &ch->xfer_list)
- ch->xfer_head = list_entry(ch->xfer_list.next,
- struct s3c_pl330_xfer, node);
- else
- ch->xfer_head = list_entry(xfer->node.next,
- struct s3c_pl330_xfer, node);
-
- if (pluck || !(ch->options & S3C2410_DMAF_CIRCULAR))
- del_from_queue(xfer);
-
- return xfer;
-}
-
-static inline void add_to_queue(struct s3c_pl330_chan *ch,
- struct s3c_pl330_xfer *xfer, int front)
-{
- struct pl330_xfer *xt;
-
- /* If queue empty */
- if (ch->xfer_head == NULL)
- ch->xfer_head = xfer;
-
- xt = &ch->xfer_head->px;
- /* If the head already submitted (CIRCULAR head) */
- if (ch->options & S3C2410_DMAF_CIRCULAR &&
- (xt == ch->req[0].x || xt == ch->req[1].x))
- ch->xfer_head = xfer;
-
- /* If this is a resubmission, it should go at the head */
- if (front) {
- ch->xfer_head = xfer;
- list_add(&xfer->node, &ch->xfer_list);
- } else {
- list_add_tail(&xfer->node, &ch->xfer_list);
- }
-}
-
-static inline void _finish_off(struct s3c_pl330_xfer *xfer,
- enum s3c2410_dma_buffresult res, int ffree)
-{
- struct s3c_pl330_chan *ch;
-
- if (!xfer)
- return;
-
- ch = xfer->chan;
-
- /* Do callback */
- if (ch->callback_fn)
- ch->callback_fn(NULL, xfer->token, xfer->px.bytes, res);
-
- /* Force Free or if buffer is not needed anymore */
- if (ffree || !(ch->options & S3C2410_DMAF_CIRCULAR))
- kmem_cache_free(ch->dmac->kmcache, xfer);
-}
-
-static inline int s3c_pl330_submit(struct s3c_pl330_chan *ch,
- struct pl330_req *r)
-{
- struct s3c_pl330_xfer *xfer;
- int ret = 0;
-
- /* If already submitted */
- if (r->x)
- return 0;
-
- xfer = get_from_queue(ch, 0);
- if (xfer) {
- r->x = &xfer->px;
-
- /* Use max bandwidth for M<->M xfers */
- if (r->rqtype == MEMTOMEM) {
- struct pl330_info *pi = xfer->chan->dmac->pi;
- int burst = 1 << ch->rqcfg.brst_size;
- u32 bytes = r->x->bytes;
- int bl;
-
- bl = pi->pcfg.data_bus_width / 8;
- bl *= pi->pcfg.data_buf_dep;
- bl /= burst;
-
- /* src/dst_burst_len can't be more than 16 */
- if (bl > 16)
- bl = 16;
-
- while (bl > 1) {
- if (!(bytes % (bl * burst)))
- break;
- bl--;
- }
-
- ch->rqcfg.brst_len = bl;
- } else {
- ch->rqcfg.brst_len = 1;
- }
-
- ret = pl330_submit_req(ch->pl330_chan_id, r);
-
- /* If submission was successful */
- if (!ret) {
- ch->lrq = r; /* latest submitted req */
- return 0;
- }
-
- r->x = NULL;
-
- /* If both of the PL330 ping-pong buffers filled */
- if (ret == -EAGAIN) {
- dev_err(ch->dmac->pi->dev, "%s:%d!\n",
- __func__, __LINE__);
- /* Queue back again */
- add_to_queue(ch, xfer, 1);
- ret = 0;
- } else {
- dev_err(ch->dmac->pi->dev, "%s:%d!\n",
- __func__, __LINE__);
- _finish_off(xfer, S3C2410_RES_ERR, 0);
- }
- }
-
- return ret;
-}
-
-static void s3c_pl330_rq(struct s3c_pl330_chan *ch,
- struct pl330_req *r, enum pl330_op_err err)
-{
- unsigned long flags;
- struct s3c_pl330_xfer *xfer;
- struct pl330_xfer *xl = r->x;
- enum s3c2410_dma_buffresult res;
-
- spin_lock_irqsave(&res_lock, flags);
-
- r->x = NULL;
-
- s3c_pl330_submit(ch, r);
-
- spin_unlock_irqrestore(&res_lock, flags);
-
- /* Map result to S3C DMA API */
- if (err == PL330_ERR_NONE)
- res = S3C2410_RES_OK;
- else if (err == PL330_ERR_ABORT)
- res = S3C2410_RES_ABORT;
- else
- res = S3C2410_RES_ERR;
-
- /* If last request had some xfer */
- if (xl) {
- xfer = container_of(xl, struct s3c_pl330_xfer, px);
- _finish_off(xfer, res, 0);
- } else {
- dev_info(ch->dmac->pi->dev, "%s:%d No Xfer?!\n",
- __func__, __LINE__);
- }
-}
-
-static void s3c_pl330_rq0(void *token, enum pl330_op_err err)
-{
- struct pl330_req *r = token;
- struct s3c_pl330_chan *ch = container_of(r,
- struct s3c_pl330_chan, req[0]);
- s3c_pl330_rq(ch, r, err);
-}
-
-static void s3c_pl330_rq1(void *token, enum pl330_op_err err)
-{
- struct pl330_req *r = token;
- struct s3c_pl330_chan *ch = container_of(r,
- struct s3c_pl330_chan, req[1]);
- s3c_pl330_rq(ch, r, err);
-}
-
-/* Release an acquired channel */
-static void chan_release(struct s3c_pl330_chan *ch)
-{
- struct s3c_pl330_dmac *dmac;
-
- if (chan_free(ch))
- return;
-
- dmac = ch->dmac;
- ch->dmac = NULL;
- dmac->busy_chan--;
-}
-
-int s3c2410_dma_ctrl(enum dma_ch id, enum s3c2410_chan_op op)
-{
- struct s3c_pl330_xfer *xfer;
- enum pl330_chan_op pl330op;
- struct s3c_pl330_chan *ch;
- unsigned long flags;
- int idx, ret;
-
- spin_lock_irqsave(&res_lock, flags);
-
- ch = id_to_chan(id);
-
- if (!ch || chan_free(ch)) {
- ret = -EINVAL;
- goto ctrl_exit;
- }
-
- switch (op) {
- case S3C2410_DMAOP_START:
- /* Make sure both reqs are enqueued */
- idx = (ch->lrq == &ch->req[0]) ? 1 : 0;
- s3c_pl330_submit(ch, &ch->req[idx]);
- s3c_pl330_submit(ch, &ch->req[1 - idx]);
- pl330op = PL330_OP_START;
- break;
-
- case S3C2410_DMAOP_STOP:
- pl330op = PL330_OP_ABORT;
- break;
-
- case S3C2410_DMAOP_FLUSH:
- pl330op = PL330_OP_FLUSH;
- break;
-
- case S3C2410_DMAOP_PAUSE:
- case S3C2410_DMAOP_RESUME:
- case S3C2410_DMAOP_TIMEOUT:
- case S3C2410_DMAOP_STARTED:
- spin_unlock_irqrestore(&res_lock, flags);
- return 0;
-
- default:
- spin_unlock_irqrestore(&res_lock, flags);
- return -EINVAL;
- }
-
- ret = pl330_chan_ctrl(ch->pl330_chan_id, pl330op);
-
- if (pl330op == PL330_OP_START) {
- spin_unlock_irqrestore(&res_lock, flags);
- return ret;
- }
-
- idx = (ch->lrq == &ch->req[0]) ? 1 : 0;
-
- /* Abort the current xfer */
- if (ch->req[idx].x) {
- xfer = container_of(ch->req[idx].x,
- struct s3c_pl330_xfer, px);
-
- /* Drop xfer during FLUSH */
- if (pl330op == PL330_OP_FLUSH)
- del_from_queue(xfer);
-
- ch->req[idx].x = NULL;
-
- spin_unlock_irqrestore(&res_lock, flags);
- _finish_off(xfer, S3C2410_RES_ABORT,
- pl330op == PL330_OP_FLUSH ? 1 : 0);
- spin_lock_irqsave(&res_lock, flags);
- }
-
- /* Flush the whole queue */
- if (pl330op == PL330_OP_FLUSH) {
-
- if (ch->req[1 - idx].x) {
- xfer = container_of(ch->req[1 - idx].x,
- struct s3c_pl330_xfer, px);
-
- del_from_queue(xfer);
-
- ch->req[1 - idx].x = NULL;
-
- spin_unlock_irqrestore(&res_lock, flags);
- _finish_off(xfer, S3C2410_RES_ABORT, 1);
- spin_lock_irqsave(&res_lock, flags);
- }
-
- /* Finish off the remaining in the queue */
- xfer = ch->xfer_head;
- while (xfer) {
-
- del_from_queue(xfer);
-
- spin_unlock_irqrestore(&res_lock, flags);
- _finish_off(xfer, S3C2410_RES_ABORT, 1);
- spin_lock_irqsave(&res_lock, flags);
-
- xfer = ch->xfer_head;
- }
- }
-
-ctrl_exit:
- spin_unlock_irqrestore(&res_lock, flags);
-
- return ret;
-}
-EXPORT_SYMBOL(s3c2410_dma_ctrl);
-
-int s3c2410_dma_enqueue(enum dma_ch id, void *token,
- dma_addr_t addr, int size)
-{
- struct s3c_pl330_chan *ch;
- struct s3c_pl330_xfer *xfer;
- unsigned long flags;
- int idx, ret = 0;
-
- spin_lock_irqsave(&res_lock, flags);
-
- ch = id_to_chan(id);
-
- /* Error if invalid or free channel */
- if (!ch || chan_free(ch)) {
- ret = -EINVAL;
- goto enq_exit;
- }
-
- /* Error if size is unaligned */
- if (ch->rqcfg.brst_size && size % (1 << ch->rqcfg.brst_size)) {
- ret = -EINVAL;
- goto enq_exit;
- }
-
- xfer = kmem_cache_alloc(ch->dmac->kmcache, GFP_ATOMIC);
- if (!xfer) {
- ret = -ENOMEM;
- goto enq_exit;
- }
-
- xfer->token = token;
- xfer->chan = ch;
- xfer->px.bytes = size;
- xfer->px.next = NULL; /* Single request */
-
- /* For S3C DMA API, direction is always fixed for all xfers */
- if (ch->req[0].rqtype == MEMTODEV) {
- xfer->px.src_addr = addr;
- xfer->px.dst_addr = ch->sdaddr;
- } else {
- xfer->px.src_addr = ch->sdaddr;
- xfer->px.dst_addr = addr;
- }
-
- add_to_queue(ch, xfer, 0);
-
- /* Try submitting on either request */
- idx = (ch->lrq == &ch->req[0]) ? 1 : 0;
-
- if (!ch->req[idx].x)
- s3c_pl330_submit(ch, &ch->req[idx]);
- else
- s3c_pl330_submit(ch, &ch->req[1 - idx]);
-
- spin_unlock_irqrestore(&res_lock, flags);
-
- if (ch->options & S3C2410_DMAF_AUTOSTART)
- s3c2410_dma_ctrl(id, S3C2410_DMAOP_START);
-
- return 0;
-
-enq_exit:
- spin_unlock_irqrestore(&res_lock, flags);
-
- return ret;
-}
-EXPORT_SYMBOL(s3c2410_dma_enqueue);
-
-int s3c2410_dma_request(enum dma_ch id,
- struct s3c2410_dma_client *client,
- void *dev)
-{
- struct s3c_pl330_dmac *dmac;
- struct s3c_pl330_chan *ch;
- unsigned long flags;
- int ret = 0;
-
- spin_lock_irqsave(&res_lock, flags);
-
- ch = chan_acquire(id);
- if (!ch) {
- ret = -EBUSY;
- goto req_exit;
- }
-
- dmac = ch->dmac;
-
- ch->pl330_chan_id = pl330_request_channel(dmac->pi);
- if (!ch->pl330_chan_id) {
- chan_release(ch);
- ret = -EBUSY;
- goto req_exit;
- }
-
- ch->client = client;
- ch->options = 0; /* Clear any option */
- ch->callback_fn = NULL; /* Clear any callback */
- ch->lrq = NULL;
-
- ch->rqcfg.brst_size = 2; /* Default word size */
- ch->rqcfg.swap = SWAP_NO;
- ch->rqcfg.scctl = SCCTRL0; /* Noncacheable and nonbufferable */
- ch->rqcfg.dcctl = DCCTRL0; /* Noncacheable and nonbufferable */
- ch->rqcfg.privileged = 0;
- ch->rqcfg.insnaccess = 0;
-
- /* Set invalid direction */
- ch->req[0].rqtype = DEVTODEV;
- ch->req[1].rqtype = ch->req[0].rqtype;
-
- ch->req[0].cfg = &ch->rqcfg;
- ch->req[1].cfg = ch->req[0].cfg;
-
- ch->req[0].peri = iface_of_dmac(dmac, id) - 1; /* Original index */
- ch->req[1].peri = ch->req[0].peri;
-
- ch->req[0].token = &ch->req[0];
- ch->req[0].xfer_cb = s3c_pl330_rq0;
- ch->req[1].token = &ch->req[1];
- ch->req[1].xfer_cb = s3c_pl330_rq1;
-
- ch->req[0].x = NULL;
- ch->req[1].x = NULL;
-
- /* Reset xfer list */
- INIT_LIST_HEAD(&ch->xfer_list);
- ch->xfer_head = NULL;
-
-req_exit:
- spin_unlock_irqrestore(&res_lock, flags);
-
- return ret;
-}
-EXPORT_SYMBOL(s3c2410_dma_request);
-
-int s3c2410_dma_free(enum dma_ch id, struct s3c2410_dma_client *client)
-{
- struct s3c_pl330_chan *ch;
- struct s3c_pl330_xfer *xfer;
- unsigned long flags;
- int ret = 0;
- unsigned idx;
-
- spin_lock_irqsave(&res_lock, flags);
-
- ch = id_to_chan(id);
-
- if (!ch || chan_free(ch))
- goto free_exit;
-
- /* Refuse if someone else wanted to free the channel */
- if (ch->client != client) {
- ret = -EBUSY;
- goto free_exit;
- }
-
- /* Stop any active xfer, Flushe the queue and do callbacks */
- pl330_chan_ctrl(ch->pl330_chan_id, PL330_OP_FLUSH);
-
- /* Abort the submitted requests */
- idx = (ch->lrq == &ch->req[0]) ? 1 : 0;
-
- if (ch->req[idx].x) {
- xfer = container_of(ch->req[idx].x,
- struct s3c_pl330_xfer, px);
-
- ch->req[idx].x = NULL;
- del_from_queue(xfer);
-
- spin_unlock_irqrestore(&res_lock, flags);
- _finish_off(xfer, S3C2410_RES_ABORT, 1);
- spin_lock_irqsave(&res_lock, flags);
- }
-
- if (ch->req[1 - idx].x) {
- xfer = container_of(ch->req[1 - idx].x,
- struct s3c_pl330_xfer, px);
-
- ch->req[1 - idx].x = NULL;
- del_from_queue(xfer);
-
- spin_unlock_irqrestore(&res_lock, flags);
- _finish_off(xfer, S3C2410_RES_ABORT, 1);
- spin_lock_irqsave(&res_lock, flags);
- }
-
- /* Pluck and Abort the queued requests in order */
- do {
- xfer = get_from_queue(ch, 1);
-
- spin_unlock_irqrestore(&res_lock, flags);
- _finish_off(xfer, S3C2410_RES_ABORT, 1);
- spin_lock_irqsave(&res_lock, flags);
- } while (xfer);
-
- ch->client = NULL;
-
- pl330_release_channel(ch->pl330_chan_id);
-
- ch->pl330_chan_id = NULL;
-
- chan_release(ch);
-
-free_exit:
- spin_unlock_irqrestore(&res_lock, flags);
-
- return ret;
-}
-EXPORT_SYMBOL(s3c2410_dma_free);
-
-int s3c2410_dma_config(enum dma_ch id, int xferunit)
-{
- struct s3c_pl330_chan *ch;
- struct pl330_info *pi;
- unsigned long flags;
- int i, dbwidth, ret = 0;
-
- spin_lock_irqsave(&res_lock, flags);
-
- ch = id_to_chan(id);
-
- if (!ch || chan_free(ch)) {
- ret = -EINVAL;
- goto cfg_exit;
- }
-
- pi = ch->dmac->pi;
- dbwidth = pi->pcfg.data_bus_width / 8;
-
- /* Max size of xfer can be pcfg.data_bus_width */
- if (xferunit > dbwidth) {
- ret = -EINVAL;
- goto cfg_exit;
- }
-
- i = 0;
- while (xferunit != (1 << i))
- i++;
-
- /* If valid value */
- if (xferunit == (1 << i))
- ch->rqcfg.brst_size = i;
- else
- ret = -EINVAL;
-
-cfg_exit:
- spin_unlock_irqrestore(&res_lock, flags);
-
- return ret;
-}
-EXPORT_SYMBOL(s3c2410_dma_config);
-
-/* Options that are supported by this driver */
-#define S3C_PL330_FLAGS (S3C2410_DMAF_CIRCULAR | S3C2410_DMAF_AUTOSTART)
-
-int s3c2410_dma_setflags(enum dma_ch id, unsigned int options)
-{
- struct s3c_pl330_chan *ch;
- unsigned long flags;
- int ret = 0;
-
- spin_lock_irqsave(&res_lock, flags);
-
- ch = id_to_chan(id);
-
- if (!ch || chan_free(ch) || options & ~(S3C_PL330_FLAGS))
- ret = -EINVAL;
- else
- ch->options = options;
-
- spin_unlock_irqrestore(&res_lock, flags);
-
- return 0;
-}
-EXPORT_SYMBOL(s3c2410_dma_setflags);
-
-int s3c2410_dma_set_buffdone_fn(enum dma_ch id, s3c2410_dma_cbfn_t rtn)
-{
- struct s3c_pl330_chan *ch;
- unsigned long flags;
- int ret = 0;
-
- spin_lock_irqsave(&res_lock, flags);
-
- ch = id_to_chan(id);
-
- if (!ch || chan_free(ch))
- ret = -EINVAL;
- else
- ch->callback_fn = rtn;
-
- spin_unlock_irqrestore(&res_lock, flags);
-
- return ret;
-}
-EXPORT_SYMBOL(s3c2410_dma_set_buffdone_fn);
-
-int s3c2410_dma_devconfig(enum dma_ch id, enum s3c2410_dmasrc source,
- unsigned long address)
-{
- struct s3c_pl330_chan *ch;
- unsigned long flags;
- int ret = 0;
-
- spin_lock_irqsave(&res_lock, flags);
-
- ch = id_to_chan(id);
-
- if (!ch || chan_free(ch)) {
- ret = -EINVAL;
- goto devcfg_exit;
- }
-
- switch (source) {
- case S3C2410_DMASRC_HW: /* P->M */
- ch->req[0].rqtype = DEVTOMEM;
- ch->req[1].rqtype = DEVTOMEM;
- ch->rqcfg.src_inc = 0;
- ch->rqcfg.dst_inc = 1;
- break;
- case S3C2410_DMASRC_MEM: /* M->P */
- ch->req[0].rqtype = MEMTODEV;
- ch->req[1].rqtype = MEMTODEV;
- ch->rqcfg.src_inc = 1;
- ch->rqcfg.dst_inc = 0;
- break;
- default:
- ret = -EINVAL;
- goto devcfg_exit;
- }
-
- ch->sdaddr = address;
-
-devcfg_exit:
- spin_unlock_irqrestore(&res_lock, flags);
-
- return ret;
-}
-EXPORT_SYMBOL(s3c2410_dma_devconfig);
-
-int s3c2410_dma_getposition(enum dma_ch id, dma_addr_t *src, dma_addr_t *dst)
-{
- struct s3c_pl330_chan *ch = id_to_chan(id);
- struct pl330_chanstatus status;
- int ret;
-
- if (!ch || chan_free(ch))
- return -EINVAL;
-
- ret = pl330_chan_status(ch->pl330_chan_id, &status);
- if (ret < 0)
- return ret;
-
- *src = status.src_addr;
- *dst = status.dst_addr;
-
- return 0;
-}
-EXPORT_SYMBOL(s3c2410_dma_getposition);
-
-static irqreturn_t pl330_irq_handler(int irq, void *data)
-{
- if (pl330_update(data))
- return IRQ_HANDLED;
- else
- return IRQ_NONE;
-}
-
-static int pl330_probe(struct platform_device *pdev)
-{
- struct s3c_pl330_dmac *s3c_pl330_dmac;
- struct s3c_pl330_platdata *pl330pd;
- struct pl330_info *pl330_info;
- struct resource *res;
- int i, ret, irq;
-
- pl330pd = pdev->dev.platform_data;
-
- /* Can't do without the list of _32_ peripherals */
- if (!pl330pd || !pl330pd->peri) {
- dev_err(&pdev->dev, "platform data missing!\n");
- return -ENODEV;
- }
-
- pl330_info = kzalloc(sizeof(*pl330_info), GFP_KERNEL);
- if (!pl330_info)
- return -ENOMEM;
-
- pl330_info->pl330_data = NULL;
- pl330_info->dev = &pdev->dev;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- ret = -ENODEV;
- goto probe_err1;
- }
-
- request_mem_region(res->start, resource_size(res), pdev->name);
-
- pl330_info->base = ioremap(res->start, resource_size(res));
- if (!pl330_info->base) {
- ret = -ENXIO;
- goto probe_err2;
- }
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
- ret = irq;
- goto probe_err3;
- }
-
- ret = request_irq(irq, pl330_irq_handler, 0,
- dev_name(&pdev->dev), pl330_info);
- if (ret)
- goto probe_err4;
-
- /* Allocate a new DMAC */
- s3c_pl330_dmac = kmalloc(sizeof(*s3c_pl330_dmac), GFP_KERNEL);
- if (!s3c_pl330_dmac) {
- ret = -ENOMEM;
- goto probe_err5;
- }
-
- /* Get operation clock and enable it */
- s3c_pl330_dmac->clk = clk_get(&pdev->dev, "pdma");
- if (IS_ERR(s3c_pl330_dmac->clk)) {
- dev_err(&pdev->dev, "Cannot get operation clock.\n");
- ret = -EINVAL;
- goto probe_err6;
- }
- clk_enable(s3c_pl330_dmac->clk);
-
- ret = pl330_add(pl330_info);
- if (ret)
- goto probe_err7;
-
- /* Hook the info */
- s3c_pl330_dmac->pi = pl330_info;
-
- /* No busy channels */
- s3c_pl330_dmac->busy_chan = 0;
-
- s3c_pl330_dmac->kmcache = kmem_cache_create(dev_name(&pdev->dev),
- sizeof(struct s3c_pl330_xfer), 0, 0, NULL);
-
- if (!s3c_pl330_dmac->kmcache) {
- ret = -ENOMEM;
- goto probe_err8;
- }
-
- /* Get the list of peripherals */
- s3c_pl330_dmac->peri = pl330pd->peri;
-
- /* Attach to the list of DMACs */
- list_add_tail(&s3c_pl330_dmac->node, &dmac_list);
-
- /* Create a channel for each peripheral in the DMAC
- * that is, if it doesn't already exist
- */
- for (i = 0; i < PL330_MAX_PERI; i++)
- if (s3c_pl330_dmac->peri[i] != DMACH_MAX)
- chan_add(s3c_pl330_dmac->peri[i]);
-
- printk(KERN_INFO
- "Loaded driver for PL330 DMAC-%d %s\n", pdev->id, pdev->name);
- printk(KERN_INFO
- "\tDBUFF-%ux%ubytes Num_Chans-%u Num_Peri-%u Num_Events-%u\n",
- pl330_info->pcfg.data_buf_dep,
- pl330_info->pcfg.data_bus_width / 8, pl330_info->pcfg.num_chan,
- pl330_info->pcfg.num_peri, pl330_info->pcfg.num_events);
-
- return 0;
-
-probe_err8:
- pl330_del(pl330_info);
-probe_err7:
- clk_disable(s3c_pl330_dmac->clk);
- clk_put(s3c_pl330_dmac->clk);
-probe_err6:
- kfree(s3c_pl330_dmac);
-probe_err5:
- free_irq(irq, pl330_info);
-probe_err4:
-probe_err3:
- iounmap(pl330_info->base);
-probe_err2:
- release_mem_region(res->start, resource_size(res));
-probe_err1:
- kfree(pl330_info);
-
- return ret;
-}
-
-static int pl330_remove(struct platform_device *pdev)
-{
- struct s3c_pl330_dmac *dmac, *d;
- struct s3c_pl330_chan *ch;
- unsigned long flags;
- int del, found;
-
- if (!pdev->dev.platform_data)
- return -EINVAL;
-
- spin_lock_irqsave(&res_lock, flags);
-
- found = 0;
- list_for_each_entry(d, &dmac_list, node)
- if (d->pi->dev == &pdev->dev) {
- found = 1;
- break;
- }
-
- if (!found) {
- spin_unlock_irqrestore(&res_lock, flags);
- return 0;
- }
-
- dmac = d;
-
- /* Remove all Channels that are managed only by this DMAC */
- list_for_each_entry(ch, &chan_list, node) {
-
- /* Only channels that are handled by this DMAC */
- if (iface_of_dmac(dmac, ch->id))
- del = 1;
- else
- continue;
-
- /* Don't remove if some other DMAC has it too */
- list_for_each_entry(d, &dmac_list, node)
- if (d != dmac && iface_of_dmac(d, ch->id)) {
- del = 0;
- break;
- }
-
- if (del) {
- spin_unlock_irqrestore(&res_lock, flags);
- s3c2410_dma_free(ch->id, ch->client);
- spin_lock_irqsave(&res_lock, flags);
- list_del(&ch->node);
- kfree(ch);
- }
- }
-
- /* Disable operation clock */
- clk_disable(dmac->clk);
- clk_put(dmac->clk);
-
- /* Remove the DMAC */
- list_del(&dmac->node);
- kfree(dmac);
-
- spin_unlock_irqrestore(&res_lock, flags);
-
- return 0;
-}
-
-static struct platform_driver pl330_driver = {
- .driver = {
- .owner = THIS_MODULE,
- .name = "s3c-pl330",
- },
- .probe = pl330_probe,
- .remove = pl330_remove,
-};
-
-static int __init pl330_init(void)
-{
- return platform_driver_register(&pl330_driver);
-}
-module_init(pl330_init);
-
-static void __exit pl330_exit(void)
-{
- platform_driver_unregister(&pl330_driver);
- return;
-}
-module_exit(pl330_exit);
-
-MODULE_AUTHOR("Jaswinder Singh <jassi.brar@samsung.com>");
-MODULE_DESCRIPTION("Driver for PL330 DMA Controller");
-MODULE_LICENSE("GPL");