From 1fecf8958eb7f90791f2c7e99afac393b64fa976 Mon Sep 17 00:00:00 2001 From: Heiko Stuebner Date: Mon, 21 Oct 2013 05:32:48 +0900 Subject: [PATCH] ARM: S3C24XX: add dma pdata for s3c2410, s3c2440 and s3c2442 s3c2410 and s3c2442 share the same dma channels while s3c2440 has slight differences. But on all three the reachable sources per dma channel has constraints attached and thus encodes the usable combinations using the S3C24XX_DMA_CHANREQ macro. This also fixes the warning about s3c2410_dma_resource being unused as reported by Olof Johansson. Reported-by: Olof Johansson Signed-off-by: Heiko Stuebner Reviewed-by: Tomasz Figa Signed-off-by: Kukjin Kim --- arch/arm/mach-s3c24xx/common.c | 100 ++++++++++++++++++++++ arch/arm/mach-s3c24xx/common.h | 2 + include/linux/platform_data/dma-s3c24xx.h | 3 + 3 files changed, 105 insertions(+) diff --git a/arch/arm/mach-s3c24xx/common.c b/arch/arm/mach-s3c24xx/common.c index bdcb29f4ea31..4adaa4b43ffe 100644 --- a/arch/arm/mach-s3c24xx/common.c +++ b/arch/arm/mach-s3c24xx/common.c @@ -343,6 +343,50 @@ static struct resource s3c2410_dma_resource[] = { }; #endif +#if defined(CONFIG_CPU_S3C2410) || defined(CONFIG_CPU_S3C2442) +static struct s3c24xx_dma_channel s3c2410_dma_channels[DMACH_MAX] = { + [DMACH_XD0] = { S3C24XX_DMA_AHB, true, S3C24XX_DMA_CHANREQ(0, 0), }, + [DMACH_XD1] = { S3C24XX_DMA_AHB, true, S3C24XX_DMA_CHANREQ(0, 1), }, + [DMACH_SDI] = { S3C24XX_DMA_APB, false, S3C24XX_DMA_CHANREQ(2, 0) | + S3C24XX_DMA_CHANREQ(2, 2) | + S3C24XX_DMA_CHANREQ(1, 3), + }, + [DMACH_SPI0] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(3, 1), }, + [DMACH_SPI1] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(2, 3), }, + [DMACH_UART0] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(1, 0), }, + [DMACH_UART1] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(1, 1), }, + [DMACH_UART2] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(0, 3), }, + [DMACH_TIMER] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(3, 0) | + S3C24XX_DMA_CHANREQ(3, 2) | + S3C24XX_DMA_CHANREQ(3, 3), + }, + [DMACH_I2S_IN] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(2, 1) | + S3C24XX_DMA_CHANREQ(1, 2), + }, + [DMACH_I2S_OUT] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(0, 2), }, + [DMACH_USB_EP1] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(4, 0), }, + [DMACH_USB_EP2] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(4, 1), }, + [DMACH_USB_EP3] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(4, 2), }, + [DMACH_USB_EP4] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(4, 3), }, +}; + +static struct s3c24xx_dma_platdata s3c2410_dma_platdata = { + .num_phy_channels = 4, + .channels = s3c2410_dma_channels, + .num_channels = DMACH_MAX, +}; + +struct platform_device s3c2410_device_dma = { + .name = "s3c2410-dma", + .id = 0, + .num_resources = ARRAY_SIZE(s3c2410_dma_resource), + .resource = s3c2410_dma_resource, + .dev = { + .platform_data = &s3c2410_dma_platdata, + }, +}; +#endif + #ifdef CONFIG_CPU_S3C2412 static struct s3c24xx_dma_channel s3c2412_dma_channels[DMACH_MAX] = { [DMACH_XD0] = { S3C24XX_DMA_AHB, true, 17 }, @@ -384,6 +428,62 @@ struct platform_device s3c2412_device_dma = { }; #endif +#if defined(CONFIG_CPU_S3C2440) +static struct s3c24xx_dma_channel s3c2440_dma_channels[DMACH_MAX] = { + [DMACH_XD0] = { S3C24XX_DMA_AHB, true, S3C24XX_DMA_CHANREQ(0, 0), }, + [DMACH_XD1] = { S3C24XX_DMA_AHB, true, S3C24XX_DMA_CHANREQ(0, 1), }, + [DMACH_SDI] = { S3C24XX_DMA_APB, false, S3C24XX_DMA_CHANREQ(2, 0) | + S3C24XX_DMA_CHANREQ(6, 1) | + S3C24XX_DMA_CHANREQ(2, 2) | + S3C24XX_DMA_CHANREQ(1, 3), + }, + [DMACH_SPI0] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(3, 1), }, + [DMACH_SPI1] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(2, 3), }, + [DMACH_UART0] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(1, 0), }, + [DMACH_UART1] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(1, 1), }, + [DMACH_UART2] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(0, 3), }, + [DMACH_TIMER] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(3, 0) | + S3C24XX_DMA_CHANREQ(3, 2) | + S3C24XX_DMA_CHANREQ(3, 3), + }, + [DMACH_I2S_IN] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(2, 1) | + S3C24XX_DMA_CHANREQ(1, 2), + }, + [DMACH_I2S_OUT] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(5, 0) | + S3C24XX_DMA_CHANREQ(0, 2), + }, + [DMACH_PCM_IN] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(6, 0) | + S3C24XX_DMA_CHANREQ(5, 2), + }, + [DMACH_PCM_OUT] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(5, 1) | + S3C24XX_DMA_CHANREQ(6, 3), + }, + [DMACH_MIC_IN] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(6, 2) | + S3C24XX_DMA_CHANREQ(5, 3), + }, + [DMACH_USB_EP1] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(4, 0), }, + [DMACH_USB_EP2] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(4, 1), }, + [DMACH_USB_EP3] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(4, 2), }, + [DMACH_USB_EP4] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(4, 3), }, +}; + +static struct s3c24xx_dma_platdata s3c2440_dma_platdata = { + .num_phy_channels = 4, + .channels = s3c2440_dma_channels, + .num_channels = DMACH_MAX, +}; + +struct platform_device s3c2440_device_dma = { + .name = "s3c2410-dma", + .id = 0, + .num_resources = ARRAY_SIZE(s3c2410_dma_resource), + .resource = s3c2410_dma_resource, + .dev = { + .platform_data = &s3c2440_dma_platdata, + }, +}; +#endif + #if defined(CONFIG_CPUS_3C2443) || defined(CONFIG_CPU_S3C2416) static struct resource s3c2443_dma_resource[] = { [0] = DEFINE_RES_MEM(S3C24XX_PA_DMA, S3C24XX_SZ_DMA), diff --git a/arch/arm/mach-s3c24xx/common.h b/arch/arm/mach-s3c24xx/common.h index fe071893275f..e46c10417216 100644 --- a/arch/arm/mach-s3c24xx/common.h +++ b/arch/arm/mach-s3c24xx/common.h @@ -109,7 +109,9 @@ extern void s3c2443_init_irq(void); extern struct syscore_ops s3c24xx_irq_syscore_ops; +extern struct platform_device s3c2410_device_dma; extern struct platform_device s3c2412_device_dma; +extern struct platform_device s3c2440_device_dma; extern struct platform_device s3c2443_device_dma; #endif /* __ARCH_ARM_MACH_S3C24XX_COMMON_H */ diff --git a/include/linux/platform_data/dma-s3c24xx.h b/include/linux/platform_data/dma-s3c24xx.h index 5a0cfffe3bbb..89ba1b0c90e4 100644 --- a/include/linux/platform_data/dma-s3c24xx.h +++ b/include/linux/platform_data/dma-s3c24xx.h @@ -9,6 +9,9 @@ * any later version. */ +/* Helper to encode the source selection constraints for early s3c socs. */ +#define S3C24XX_DMA_CHANREQ(src, chan) ((BIT(3) | src) << chan * 4) + enum s3c24xx_dma_bus { S3C24XX_DMA_APB, S3C24XX_DMA_AHB,