[PATCH 1/6] DMA: AT91: Serial: Add parameter for serial dma use
Jean-Christophe PLAGNIOL-VILLARD
plagnioj at jcrosoft.com
Mon Oct 29 07:42:21 EDT 2012
On 17:09 Mon 29 Oct , Elen Song wrote:
> Signed-off-by: Elen Song <elen.song at atmel.com>
> ---
> arch/arm/mach-at91/include/mach/board.h | 2 ++
> drivers/tty/serial/atmel_serial.c | 1 +
> include/linux/platform_data/dma-atmel.h | 10 ++++++++++
> 3 files changed, 13 insertions(+)
you will have to rebase this over a clean if the platofrm_data I'll send today
or tomorrow that will move all the platform_data to inclide/linux
btw your patch broke the avr32
Best Regards.
J.
>
> diff --git a/arch/arm/mach-at91/include/mach/board.h b/arch/arm/mach-at91/include/mach/board.h
> index c55a436..a2188a6 100644
> --- a/arch/arm/mach-at91/include/mach/board.h
> +++ b/arch/arm/mach-at91/include/mach/board.h
> @@ -129,6 +129,8 @@ struct atmel_uart_data {
> short use_dma_tx; /* use transmit DMA? */
> short use_dma_rx; /* use receive DMA? */
> void __iomem *regs; /* virt. base address, if any */
> + struct at_dma_slave *dma_tx_slave;
> + struct at_dma_slave *dma_rx_slave;
> struct serial_rs485 rs485; /* rs485 settings */
> };
> extern void __init at91_add_device_serial(void);
> diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
> index 3d7e1ee..1b1bd4f 100644
> --- a/drivers/tty/serial/atmel_serial.c
> +++ b/drivers/tty/serial/atmel_serial.c
> @@ -45,6 +45,7 @@
>
> #include <asm/mach/serial_at91.h>
> #include <mach/board.h>
> +#include <linux/platform_data/dma-atmel.h>
>
> #ifdef CONFIG_ARM
> #include <mach/cpu.h>
> diff --git a/include/linux/platform_data/dma-atmel.h b/include/linux/platform_data/dma-atmel.h
> index cab0997..bb05302 100644
> --- a/include/linux/platform_data/dma-atmel.h
> +++ b/include/linux/platform_data/dma-atmel.h
> @@ -26,11 +26,21 @@ struct at_dma_platform_data {
> /**
> * struct at_dma_slave - Controller-specific information about a slave
> * @dma_dev: required DMA master device
> + * @tx_reg: physical address of data register used for
> + * memory-to-peripheral transfers
> + * @rx_reg: physical address of data register used for
> + * peripheral-to-memory transfers
> + * @reg_width: peripheral register width
> * @cfg: Platform-specific initializer for the CFG register
> + * @ctrla: Platform-specific initializer for the CTRLA register
> */
> struct at_dma_slave {
> struct device *dma_dev;
> + dma_addr_t tx_reg;
> + dma_addr_t rx_reg;
> + u32 reg_width;
> u32 cfg;
> + u32 ctrla;
> };
>
>
> --
> 1.7.9.5
>
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