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authorLinus Torvalds <torvalds@g5.osdl.org>2006-04-02 13:34:00 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-02 13:34:00 -0700
commit1810b6cb162e0c19e0ecbbacbcfd66f578f335ec (patch)
tree810494ca945483bf669a062d445d49d3bfb7d6a7 /include/asm-arm/arch-imx
parentef7a4567dc542d8cc563755478464ea928fede41 (diff)
parent9b6553cd01ce3ea7a6a532f7b7e62e3535d6b102 (diff)
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.h17
-rw-r--r--include/asm-arm/arch-imx/imx-dma.h90
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 b45fa367d71..621ff2c730f 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 00000000000..f2063c1d610
--- /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 */