diff options
| author | Tomasz Figa <tomasz.figa@gmail.com> | 2013-10-16 23:10:54 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-11-24 18:38:24 +0400 |
| commit | 1db0287ab186637488e51ae43109692624f2d5a3 (patch) | |
| tree | 13a3fa95b54b8f9b1e56125a5d369cd3d9fb37c5 /arch/arm/mach-s3c64xx/include | |
| parent | 1b49f10c69b45a8b169c69eaa127e7f91a32f7c7 (diff) | |
| download | linux-1db0287ab186637488e51ae43109692624f2d5a3.tar.xz | |
ARM: s3c64xx: Add support for DMA using generic amba-pl08x driver
This patch adds all required platform-specific data and initialization
code to support the generic amba-pl08x driver on S3C64xx SoCs.
Also some compatibility definitions are added to make the transition
from legacy API to DMA engine easier. The biggest hack here is passing
const char * pointers through DMA resource, casted to unsigned long,
but this is how Samsung DMA wrappers (used to support both s3c-dma and
DMA engine in drivers) are designed.
Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'arch/arm/mach-s3c64xx/include')
| -rw-r--r-- | arch/arm/mach-s3c64xx/include/mach/dma.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c64xx/include/mach/dma.h b/arch/arm/mach-s3c64xx/include/mach/dma.h index fe1a98cf0e4c..26a6bc300589 100644 --- a/arch/arm/mach-s3c64xx/include/mach/dma.h +++ b/arch/arm/mach-s3c64xx/include/mach/dma.h @@ -11,6 +11,8 @@ #ifndef __ASM_ARCH_DMA_H #define __ASM_ARCH_DMA_H __FILE__ +#ifdef CONFIG_S3C64XX_DMA + #define S3C_DMA_CHANNELS (16) /* see mach-s3c2410/dma.h for notes on dma channel numbers */ @@ -128,4 +130,65 @@ struct s3c2410_dma_chan { #include <plat/dma-core.h> +#else + +#define S3C64XX_DMA_CHAN(name) ((unsigned long)(name)) + +/* DMA0/SDMA0 */ +#define DMACH_UART0 S3C64XX_DMA_CHAN("uart0_tx") +#define DMACH_UART0_SRC2 S3C64XX_DMA_CHAN("uart0_rx") +#define DMACH_UART1 S3C64XX_DMA_CHAN("uart1_tx") +#define DMACH_UART1_SRC2 S3C64XX_DMA_CHAN("uart1_rx") +#define DMACH_UART2 S3C64XX_DMA_CHAN("uart2_tx") +#define DMACH_UART2_SRC2 S3C64XX_DMA_CHAN("uart2_rx") +#define DMACH_UART3 S3C64XX_DMA_CHAN("uart3_tx") +#define DMACH_UART3_SRC2 S3C64XX_DMA_CHAN("uart3_rx") +#define DMACH_PCM0_TX S3C64XX_DMA_CHAN("pcm0_tx") +#define DMACH_PCM0_RX S3C64XX_DMA_CHAN("pcm0_rx") +#define DMACH_I2S0_OUT S3C64XX_DMA_CHAN("i2s0_tx") +#define DMACH_I2S0_IN S3C64XX_DMA_CHAN("i2s0_rx") +#define DMACH_SPI0_TX S3C64XX_DMA_CHAN("spi0_tx") +#define DMACH_SPI0_RX S3C64XX_DMA_CHAN("spi0_rx") +#define DMACH_HSI_I2SV40_TX S3C64XX_DMA_CHAN("i2s2_tx") +#define DMACH_HSI_I2SV40_RX S3C64XX_DMA_CHAN("i2s2_rx") + +/* DMA1/SDMA1 */ +#define DMACH_PCM1_TX S3C64XX_DMA_CHAN("pcm1_tx") +#define DMACH_PCM1_RX S3C64XX_DMA_CHAN("pcm1_rx") +#define DMACH_I2S1_OUT S3C64XX_DMA_CHAN("i2s1_tx") +#define DMACH_I2S1_IN S3C64XX_DMA_CHAN("i2s1_rx") +#define DMACH_SPI1_TX S3C64XX_DMA_CHAN("spi1_tx") +#define DMACH_SPI1_RX S3C64XX_DMA_CHAN("spi1_rx") +#define DMACH_AC97_PCMOUT S3C64XX_DMA_CHAN("ac97_out") +#define DMACH_AC97_PCMIN S3C64XX_DMA_CHAN("ac97_in") +#define DMACH_AC97_MICIN S3C64XX_DMA_CHAN("ac97_mic") +#define DMACH_PWM S3C64XX_DMA_CHAN("pwm") +#define DMACH_IRDA S3C64XX_DMA_CHAN("irda") +#define DMACH_EXTERNAL S3C64XX_DMA_CHAN("external") +#define DMACH_SECURITY_RX S3C64XX_DMA_CHAN("sec_rx") +#define DMACH_SECURITY_TX S3C64XX_DMA_CHAN("sec_tx") + +enum dma_ch { + DMACH_MAX = 32 +}; + +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 <linux/amba/pl08x.h> +#include <plat/dma-ops.h> + +#endif + #endif /* __ASM_ARCH_IRQ_H */ |