Subject: [PATCH RESEND 3/3] ARM: S3C24XX: add dma pdata for s3c2410, s3c2440 and s3c2442

From: [email-masked] (Heiko Stübner)
Date: Sun, 13 Oct 2013 20:15:28 +0200

Am Sonntag, 13. Oktober 2013, 16:55:37 schrieb Vinod Koul:
> On Fri, Oct 11, 2013 at 11:01:33AM +0200, Heiko St?bner wrote:
> > 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.
> 
> Perhpas you should have used Reported-by tag for that..

yep, I should've, if I hadn't forgotten.

Maybe Kgene, who will most likely apply the patches, can add a

Reported-by: Olof Johansson <[email-masked]>

at the time.

> 
> ~Vinod
> 
> > Signed-off-by: Heiko Stuebner <[email-masked]>
> > ---
> > 
> >  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 16ac669..4cfe7a4 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 fe07189..e46c104 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 5a0cfff..89ba1b0
> > 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,