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author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-02 13:34:00 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-02 13:34:00 -0700 |
commit | 1810b6cb162e0c19e0ecbbacbcfd66f578f335ec (patch) | |
tree | 810494ca945483bf669a062d445d49d3bfb7d6a7 /include/asm-arm/arch-imx | |
parent | ef7a4567dc542d8cc563755478464ea928fede41 (diff) | |
parent | 9b6553cd01ce3ea7a6a532f7b7e62e3535d6b102 (diff) | |
download | op-kernel-dev-1810b6cb162e0c19e0ecbbacbcfd66f578f335ec.zip op-kernel-dev-1810b6cb162e0c19e0ecbbacbcfd66f578f335ec.tar.gz |
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm: (27 commits)
[ARM] 3433/1: ARM: OMAP: 8/8 Update board files
[ARM] 3455/1: ARM: OMAP: 7/8 Misc updates, take 2
[ARM] 3454/1: ARM: OMAP: 6/8 Update framebuffer low-level init code, take 2
[ARM] 3430/1: ARM: OMAP: 5/8 Update PM
[ARM] 3429/1: ARM: OMAP: 4/8 Update GPIO
[ARM] 3428/1: ARM: OMAP: 3/8 Update pin multiplexing
[ARM] 3427/1: ARM: OMAP: 2/8 Update timers
[ARM] 3426/1: ARM: OMAP: 1/8 Update clock framework
[ARM] 3396/2: AT91RM9200 Platform devices update
[ARM] 3395/2: AT91RM9200 Dataflash Card vs MMC selection
[ARM] 3393/2: AT91RM9200 LED support
[ARM] 3453/1: Poodle: Correctly set the memory size
[ARM] 3446/1: i.MX: MMC/SD SDHC controller registration for i.MX/MX1 MX1ADS board
[ARM] 3444/1: i.MX: Scatter-gather DMA emulation for i.MX/MX1
[ARM] 3451/1: ep93xx: use the m48t86 rtc driver on the ts72xx platform
[ARM] 3450/1: ep93xx: use the ep93xx rtc driver
[ARM] 3452/1: [S3C2410] RX3715 - add nand information
[ARM] 3449/1: [S3C2410] Anubis - fix NAND timings
[ARM] 3448/1: [S3C2410] Settle delay when _enabling_ USB PLL
[ARM] 3442/1: [S3C2410] SMDK: NAND device setup
...
Diffstat (limited to 'include/asm-arm/arch-imx')
-rw-r--r-- | include/asm-arm/arch-imx/dma.h | 17 | ||||
-rw-r--r-- | include/asm-arm/arch-imx/imx-dma.h | 90 |
2 files changed, 93 insertions, 14 deletions
diff --git a/include/asm-arm/arch-imx/dma.h b/include/asm-arm/arch-imx/dma.h index b45fa36..621ff2c 100644 --- a/include/asm-arm/arch-imx/dma.h +++ b/include/asm-arm/arch-imx/dma.h @@ -17,27 +17,16 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + #ifndef __ASM_ARCH_DMA_H #define __ASM_ARCH_DMA_H -/* - * DMA registration - */ - typedef enum { DMA_PRIO_HIGH = 0, - DMA_PRIO_MEDIUM = 3, - DMA_PRIO_LOW = 6 + DMA_PRIO_MEDIUM = 1, + DMA_PRIO_LOW = 2 } imx_dma_prio; -int imx_request_dma(char *name, imx_dma_prio prio, - void (*irq_handler) (int, void *, struct pt_regs *), - void (*err_handler) (int, void *, struct pt_regs *), - void *data); - -void imx_free_dma(int dma_ch); - - #define DMA_REQ_UART3_T 2 #define DMA_REQ_UART3_R 3 #define DMA_REQ_SSI2_T 4 diff --git a/include/asm-arm/arch-imx/imx-dma.h b/include/asm-arm/arch-imx/imx-dma.h new file mode 100644 index 0000000..f2063c1 --- /dev/null +++ b/include/asm-arm/arch-imx/imx-dma.h @@ -0,0 +1,90 @@ +/* + * linux/include/asm-arm/imxads/dma.h + * + * Copyright (C) 1997,1998 Russell King + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <asm/dma.h> + +#ifndef __ASM_ARCH_IMX_DMA_H +#define __ASM_ARCH_IMX_DMA_H + +#define IMX_DMA_CHANNELS 11 + +/* + * struct imx_dma_channel - i.MX specific DMA extension + * @name: name specified by DMA client + * @irq_handler: client callback for end of transfer + * @err_handler: client callback for error condition + * @data: clients context data for callbacks + * @dma_mode: direction of the transfer %DMA_MODE_READ or %DMA_MODE_WRITE + * @sg: pointer to the actual read/written chunk for scatter-gather emulation + * @sgbc: counter of processed bytes in the actual read/written chunk + * @resbytes: total residual number of bytes to transfer + * (it can be lower or same as sum of SG mapped chunk sizes) + * @sgcount: number of chunks to be read/written + * + * Structure is used for IMX DMA processing. It would be probably good + * @struct dma_struct in the future for external interfacing and use + * @struct imx_dma_channel only as extension to it. + */ + +struct imx_dma_channel { + const char *name; + void (*irq_handler) (int, void *, struct pt_regs *); + void (*err_handler) (int, void *, struct pt_regs *); + void *data; + dmamode_t dma_mode; + struct scatterlist *sg; + unsigned int sgbc; + unsigned int sgcount; + unsigned int resbytes; + int dma_num; +}; + +extern struct imx_dma_channel imx_dma_channels[IMX_DMA_CHANNELS]; + + +/* The type to distinguish channel numbers parameter from ordinal int type */ +typedef int imx_dmach_t; + +int +imx_dma_setup_single(imx_dmach_t dma_ch, dma_addr_t dma_address, + unsigned int dma_length, unsigned int dev_addr, dmamode_t dmamode); + +int +imx_dma_setup_sg(imx_dmach_t dma_ch, + struct scatterlist *sg, unsigned int sgcount, unsigned int dma_length, + unsigned int dev_addr, dmamode_t dmamode); + +int +imx_dma_setup_handlers(imx_dmach_t dma_ch, + void (*irq_handler) (int, void *, struct pt_regs *), + void (*err_handler) (int, void *, struct pt_regs *), void *data); + +void imx_dma_enable(imx_dmach_t dma_ch); + +void imx_dma_disable(imx_dmach_t dma_ch); + +int imx_dma_request(imx_dmach_t dma_ch, const char *name); + +void imx_dma_free(imx_dmach_t dma_ch); + +int imx_dma_request_by_prio(imx_dmach_t *pdma_ch, const char *name, imx_dma_prio prio); + + +#endif /* _ASM_ARCH_IMX_DMA_H */ |