Openwrt/openwrt_archive
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
attitude_adjustment
openwrt_archive/target/linux/s3c24xx/patches-2.6.30/010-s3c-dma.patch
Lars-Peter Clausen 65a772a3f1 [s3c24xx] Update to 2.6.30.1, refresh patches 
SVN-Revision: 16680
2009-07-05 09:47:42 +00:00

1325 lines
37 KiB
Diff
Raw Permalink Blame History

--- a/arch/arm/mach-s3c2410/include/mach/dma.h
+++ b/arch/arm/mach-s3c2410/include/mach/dma.h
@@ -3,7 +3,7 @@
* Copyright (C) 2003,2004,2006 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
- * Samsung S3C241XX DMA support
+ * Samsung S3C24XX DMA support
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -13,8 +13,8 @@
#ifndef __ASM_ARCH_DMA_H
#define __ASM_ARCH_DMA_H __FILE__
+#include <plat/dma.h>
#include <linux/sysdev.h>
-#include <mach/hardware.h>
#define MAX_DMA_TRANSFER_SIZE 0x100000 /* Data Unit is half word */
@@ -55,9 +55,9 @@ enum dma_ch {
/* we have 4 dma channels */
#ifndef CONFIG_CPU_S3C2443
-#define S3C2410_DMA_CHANNELS (4)
+#define S3C_DMA_CHANNELS (4)
#else
-#define S3C2410_DMA_CHANNELS (6)
+#define S3C_DMA_CHANNELS (6)
#endif
/* types */
@@ -68,7 +68,6 @@ enum s3c2410_dma_state {
S3C2410_DMA_PAUSED
};
-
/* enum s3c2410_dma_loadst
*
* This represents the state of the DMA engine, wrt to the loaded / running
@@ -104,32 +103,6 @@ enum s3c2410_dma_loadst {
S3C2410_DMALOAD_1LOADED_1RUNNING,
};
-enum s3c2410_dma_buffresult {
- S3C2410_RES_OK,
- S3C2410_RES_ERR,
- S3C2410_RES_ABORT
-};
-
-enum s3c2410_dmasrc {
- S3C2410_DMASRC_HW, /* source is memory */
- S3C2410_DMASRC_MEM /* source is hardware */
-};
-
-/* enum s3c2410_chan_op
- *
- * operation codes passed to the DMA code by the user, and also used
- * to inform the current channel owner of any changes to the system state
-*/
-
-enum s3c2410_chan_op {
- S3C2410_DMAOP_START,
- S3C2410_DMAOP_STOP,
- S3C2410_DMAOP_PAUSE,
- S3C2410_DMAOP_RESUME,
- S3C2410_DMAOP_FLUSH,
- S3C2410_DMAOP_TIMEOUT, /* internal signal to handler */
- S3C2410_DMAOP_STARTED, /* indicate channel started */
-};
/* flags */
@@ -137,19 +110,18 @@ enum s3c2410_chan_op {
* waiting for reloads */
#define S3C2410_DMAF_AUTOSTART (1<<1) /* auto-start if buffer queued */
+#define S3C2410_DMAF_CIRCULAR (0x00) /* circular enqueue not supp. */
+
/* dma buffer */
-struct s3c2410_dma_client {
- char *name;
-};
+struct s3c2410_dma_buf;
-/* s3c2410_dma_buf_s
+/* s3c2410_dma_buf
*
* internally used buffer structure to describe a queued or running
* buffer.
*/
-struct s3c2410_dma_buf;
struct s3c2410_dma_buf {
struct s3c2410_dma_buf *next;
int magic; /* magic */
@@ -161,20 +133,6 @@ struct s3c2410_dma_buf {
/* [1] is this updated for both recv/send modes? */
-struct s3c2410_dma_chan;
-
-/* s3c2410_dma_cbfn_t
- *
- * buffer callback routine type
-*/
-
-typedef void (*s3c2410_dma_cbfn_t)(struct s3c2410_dma_chan *,
- void *buf, int size,
- enum s3c2410_dma_buffresult result);
-
-typedef int (*s3c2410_dma_opfn_t)(struct s3c2410_dma_chan *,
- enum s3c2410_chan_op );
-
struct s3c2410_dma_stats {
unsigned long loads;
unsigned long timeout_longest;
@@ -206,10 +164,10 @@ struct s3c2410_dma_chan {
/* channel configuration */
enum s3c2410_dmasrc source;
+ enum dma_ch req_ch;
unsigned long dev_addr;
unsigned long load_timeout;
unsigned int flags; /* channel flags */
- unsigned int hw_cfg; /* last hw config */
struct s3c24xx_dma_map *map; /* channel hw maps */
@@ -236,213 +194,12 @@ struct s3c2410_dma_chan {
struct sys_device dev;
};
-/* the currently allocated channel information */
-extern struct s3c2410_dma_chan s3c2410_chans[];
-
-/* note, we don't really use dma_device_t at the moment */
typedef unsigned long dma_device_t;
-/* functions --------------------------------------------------------------- */
-
-/* s3c2410_dma_request
- *
- * request a dma channel exclusivley
-*/
-
-extern int s3c2410_dma_request(unsigned int channel,
- struct s3c2410_dma_client *, void *dev);
-
-
-/* s3c2410_dma_ctrl
- *
- * change the state of the dma channel
-*/
-
-extern int s3c2410_dma_ctrl(unsigned int channel, enum s3c2410_chan_op op);
-
-/* s3c2410_dma_setflags
- *
- * set the channel's flags to a given state
-*/
-
-extern int s3c2410_dma_setflags(unsigned int channel,
- unsigned int flags);
-
-/* s3c2410_dma_free
- *
- * free the dma channel (will also abort any outstanding operations)
-*/
-
-extern int s3c2410_dma_free(unsigned int channel, struct s3c2410_dma_client *);
-
-/* s3c2410_dma_enqueue
- *
- * place the given buffer onto the queue of operations for the channel.
- * The buffer must be allocated from dma coherent memory, or the Dcache/WB
- * drained before the buffer is given to the DMA system.
-*/
-
-extern int s3c2410_dma_enqueue(unsigned int channel, void *id,
- dma_addr_t data, int size);
-
-/* s3c2410_dma_config
- *
- * configure the dma channel
-*/
-
-extern int s3c2410_dma_config(unsigned int channel, int xferunit, int dcon);
-
-/* s3c2410_dma_devconfig
- *
- * configure the device we're talking to
-*/
-
-extern int s3c2410_dma_devconfig(int channel, enum s3c2410_dmasrc source,
- int hwcfg, unsigned long devaddr);
-
-/* s3c2410_dma_getposition
- *
- * get the position that the dma transfer is currently at
-*/
-
-extern int s3c2410_dma_getposition(unsigned int channel,
- dma_addr_t *src, dma_addr_t *dest);
-
-extern int s3c2410_dma_set_opfn(unsigned int, s3c2410_dma_opfn_t rtn);
-extern int s3c2410_dma_set_buffdone_fn(unsigned int, s3c2410_dma_cbfn_t rtn);
-
-/* DMA Register definitions */
-
-#define S3C2410_DMA_DISRC (0x00)
-#define S3C2410_DMA_DISRCC (0x04)
-#define S3C2410_DMA_DIDST (0x08)
-#define S3C2410_DMA_DIDSTC (0x0C)
-#define S3C2410_DMA_DCON (0x10)
-#define S3C2410_DMA_DSTAT (0x14)
-#define S3C2410_DMA_DCSRC (0x18)
-#define S3C2410_DMA_DCDST (0x1C)
-#define S3C2410_DMA_DMASKTRIG (0x20)
-#define S3C2412_DMA_DMAREQSEL (0x24)
-#define S3C2443_DMA_DMAREQSEL (0x24)
-
-#define S3C2410_DISRCC_INC (1<<0)
-#define S3C2410_DISRCC_APB (1<<1)
-
-#define S3C2410_DMASKTRIG_STOP (1<<2)
-#define S3C2410_DMASKTRIG_ON (1<<1)
-#define S3C2410_DMASKTRIG_SWTRIG (1<<0)
-
-#define S3C2410_DCON_DEMAND (0<<31)
-#define S3C2410_DCON_HANDSHAKE (1<<31)
-#define S3C2410_DCON_SYNC_PCLK (0<<30)
-#define S3C2410_DCON_SYNC_HCLK (1<<30)
-
-#define S3C2410_DCON_INTREQ (1<<29)
-
-#define S3C2410_DCON_CH0_XDREQ0 (0<<24)
-#define S3C2410_DCON_CH0_UART0 (1<<24)
-#define S3C2410_DCON_CH0_SDI (2<<24)
-#define S3C2410_DCON_CH0_TIMER (3<<24)
-#define S3C2410_DCON_CH0_USBEP1 (4<<24)
-
-#define S3C2410_DCON_CH1_XDREQ1 (0<<24)
-#define S3C2410_DCON_CH1_UART1 (1<<24)
-#define S3C2410_DCON_CH1_I2SSDI (2<<24)
-#define S3C2410_DCON_CH1_SPI (3<<24)
-#define S3C2410_DCON_CH1_USBEP2 (4<<24)
-
-#define S3C2410_DCON_CH2_I2SSDO (0<<24)
-#define S3C2410_DCON_CH2_I2SSDI (1<<24)
-#define S3C2410_DCON_CH2_SDI (2<<24)
-#define S3C2410_DCON_CH2_TIMER (3<<24)
-#define S3C2410_DCON_CH2_USBEP3 (4<<24)
-
-#define S3C2410_DCON_CH3_UART2 (0<<24)
-#define S3C2410_DCON_CH3_SDI (1<<24)
-#define S3C2410_DCON_CH3_SPI (2<<24)
-#define S3C2410_DCON_CH3_TIMER (3<<24)
-#define S3C2410_DCON_CH3_USBEP4 (4<<24)
-
-#define S3C2410_DCON_SRCSHIFT (24)
-#define S3C2410_DCON_SRCMASK (7<<24)
-
-#define S3C2410_DCON_BYTE (0<<20)
-#define S3C2410_DCON_HALFWORD (1<<20)
-#define S3C2410_DCON_WORD (2<<20)
-
-#define S3C2410_DCON_AUTORELOAD (0<<22)
-#define S3C2410_DCON_NORELOAD (1<<22)
-#define S3C2410_DCON_HWTRIG (1<<23)
-
-#ifdef CONFIG_CPU_S3C2440
-#define S3C2440_DIDSTC_CHKINT (1<<2)
-
-#define S3C2440_DCON_CH0_I2SSDO (5<<24)
-#define S3C2440_DCON_CH0_PCMIN (6<<24)
-
-#define S3C2440_DCON_CH1_PCMOUT (5<<24)
-#define S3C2440_DCON_CH1_SDI (6<<24)
-
-#define S3C2440_DCON_CH2_PCMIN (5<<24)
-#define S3C2440_DCON_CH2_MICIN (6<<24)
-
-#define S3C2440_DCON_CH3_MICIN (5<<24)
-#define S3C2440_DCON_CH3_PCMOUT (6<<24)
-#endif
-
-#ifdef CONFIG_CPU_S3C2412
-
-#define S3C2412_DMAREQSEL_SRC(x) ((x)<<1)
-
-#define S3C2412_DMAREQSEL_HW (1)
-
-#define S3C2412_DMAREQSEL_SPI0TX S3C2412_DMAREQSEL_SRC(0)
-#define S3C2412_DMAREQSEL_SPI0RX S3C2412_DMAREQSEL_SRC(1)
-#define S3C2412_DMAREQSEL_SPI1TX S3C2412_DMAREQSEL_SRC(2)
-#define S3C2412_DMAREQSEL_SPI1RX S3C2412_DMAREQSEL_SRC(3)
-#define S3C2412_DMAREQSEL_I2STX S3C2412_DMAREQSEL_SRC(4)
-#define S3C2412_DMAREQSEL_I2SRX S3C2412_DMAREQSEL_SRC(5)
-#define S3C2412_DMAREQSEL_TIMER S3C2412_DMAREQSEL_SRC(9)
-#define S3C2412_DMAREQSEL_SDI S3C2412_DMAREQSEL_SRC(10)
-#define S3C2412_DMAREQSEL_USBEP1 S3C2412_DMAREQSEL_SRC(13)
-#define S3C2412_DMAREQSEL_USBEP2 S3C2412_DMAREQSEL_SRC(14)
-#define S3C2412_DMAREQSEL_USBEP3 S3C2412_DMAREQSEL_SRC(15)
-#define S3C2412_DMAREQSEL_USBEP4 S3C2412_DMAREQSEL_SRC(16)
-#define S3C2412_DMAREQSEL_XDREQ0 S3C2412_DMAREQSEL_SRC(17)
-#define S3C2412_DMAREQSEL_XDREQ1 S3C2412_DMAREQSEL_SRC(18)
-#define S3C2412_DMAREQSEL_UART0_0 S3C2412_DMAREQSEL_SRC(19)
-#define S3C2412_DMAREQSEL_UART0_1 S3C2412_DMAREQSEL_SRC(20)
-#define S3C2412_DMAREQSEL_UART1_0 S3C2412_DMAREQSEL_SRC(21)
-#define S3C2412_DMAREQSEL_UART1_1 S3C2412_DMAREQSEL_SRC(22)
-#define S3C2412_DMAREQSEL_UART2_0 S3C2412_DMAREQSEL_SRC(23)
-#define S3C2412_DMAREQSEL_UART2_1 S3C2412_DMAREQSEL_SRC(24)
-
-#endif
-
-#define S3C2443_DMAREQSEL_SRC(x) ((x)<<1)
-
-#define S3C2443_DMAREQSEL_HW (1)
-#define S3C2443_DMAREQSEL_SPI0TX S3C2443_DMAREQSEL_SRC(0)
-#define S3C2443_DMAREQSEL_SPI0RX S3C2443_DMAREQSEL_SRC(1)
-#define S3C2443_DMAREQSEL_SPI1TX S3C2443_DMAREQSEL_SRC(2)
-#define S3C2443_DMAREQSEL_SPI1RX S3C2443_DMAREQSEL_SRC(3)
-#define S3C2443_DMAREQSEL_I2STX S3C2443_DMAREQSEL_SRC(4)
-#define S3C2443_DMAREQSEL_I2SRX S3C2443_DMAREQSEL_SRC(5)
-#define S3C2443_DMAREQSEL_TIMER S3C2443_DMAREQSEL_SRC(9)
-#define S3C2443_DMAREQSEL_SDI S3C2443_DMAREQSEL_SRC(10)
-#define S3C2443_DMAREQSEL_XDREQ0 S3C2443_DMAREQSEL_SRC(17)
-#define S3C2443_DMAREQSEL_XDREQ1 S3C2443_DMAREQSEL_SRC(18)
-#define S3C2443_DMAREQSEL_UART0_0 S3C2443_DMAREQSEL_SRC(19)
-#define S3C2443_DMAREQSEL_UART0_1 S3C2443_DMAREQSEL_SRC(20)
-#define S3C2443_DMAREQSEL_UART1_0 S3C2443_DMAREQSEL_SRC(21)
-#define S3C2443_DMAREQSEL_UART1_1 S3C2443_DMAREQSEL_SRC(22)
-#define S3C2443_DMAREQSEL_UART2_0 S3C2443_DMAREQSEL_SRC(23)
-#define S3C2443_DMAREQSEL_UART2_1 S3C2443_DMAREQSEL_SRC(24)
-#define S3C2443_DMAREQSEL_UART3_0 S3C2443_DMAREQSEL_SRC(25)
-#define S3C2443_DMAREQSEL_UART3_1 S3C2443_DMAREQSEL_SRC(26)
-#define S3C2443_DMAREQSEL_PCMOUT S3C2443_DMAREQSEL_SRC(27)
-#define S3C2443_DMAREQSEL_PCMIN S3C2443_DMAREQSEL_SRC(28)
-#define S3C2443_DMAREQSEL_MICIN S3C2443_DMAREQSEL_SRC(29)
+static int s3c_dma_has_circular(void)
+{
+ return 0;
+}
#endif /* __ASM_ARCH_DMA_H */
--- a/arch/arm/mach-s3c2442/Kconfig
+++ b/arch/arm/mach-s3c2442/Kconfig
@@ -11,6 +11,7 @@ config CPU_S3C2442
select S3C2410_CLOCK
select S3C2410_GPIO
select S3C2410_PM if PM
+ select S3C2440_DMA if S3C2410_DMA
select CPU_S3C244X
select CPU_LLSERIAL_S3C2440
help
--- /dev/null
+++ b/arch/arm/plat-s3c/dma.c
@@ -0,0 +1,86 @@
+/* linux/arch/arm/plat-s3c/dma.c
+ *
+ * Copyright (c) 2003-2005,2006,2009 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C DMA core
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+struct s3c2410_dma_buf;
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+
+#include <mach/dma.h>
+#include <mach/irqs.h>
+
+#include <plat/dma-plat.h>
+
+/* dma channel state information */
+struct s3c2410_dma_chan s3c2410_chans[S3C_DMA_CHANNELS];
+struct s3c2410_dma_chan *s3c_dma_chan_map[DMACH_MAX];
+
+/* s3c_dma_lookup_channel
+ *
+ * change the dma channel number given into a real dma channel id
+*/
+
+struct s3c2410_dma_chan *s3c_dma_lookup_channel(unsigned int channel)
+{
+ if (channel & DMACH_LOW_LEVEL)
+ return &s3c2410_chans[channel & ~DMACH_LOW_LEVEL];
+ else
+ return s3c_dma_chan_map[channel];
+}
+
+/* do we need to protect the settings of the fields from
+ * irq?
+*/
+
+int s3c2410_dma_set_opfn(unsigned int channel, s3c2410_dma_opfn_t rtn)
+{
+ struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
+
+ if (chan == NULL)
+ return -EINVAL;
+
+ pr_debug("%s: chan=%p, op rtn=%p\n", __func__, chan, rtn);
+
+ chan->op_fn = rtn;
+
+ return 0;
+}
+EXPORT_SYMBOL(s3c2410_dma_set_opfn);
+
+int s3c2410_dma_set_buffdone_fn(unsigned int channel, s3c2410_dma_cbfn_t rtn)
+{
+ struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
+
+ if (chan == NULL)
+ return -EINVAL;
+
+ pr_debug("%s: chan=%p, callback rtn=%p\n", __func__, chan, rtn);
+
+ chan->callback_fn = rtn;
+
+ return 0;
+}
+EXPORT_SYMBOL(s3c2410_dma_set_buffdone_fn);
+
+int s3c2410_dma_setflags(unsigned int channel, unsigned int flags)
+{
+ struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
+
+ if (chan == NULL)
+ return -EINVAL;
+
+ chan->flags = flags;
+ return 0;
+}
+EXPORT_SYMBOL(s3c2410_dma_setflags);
--- /dev/null
+++ b/arch/arm/plat-s3c/include/plat/dma-core.h
@@ -0,0 +1,22 @@
+/* arch/arm/plat-s3c/include/plat/dma.h
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * Samsung S3C DMA core support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+extern struct s3c2410_dma_chan *s3c_dma_lookup_channel(unsigned int channel);
+
+extern struct s3c2410_dma_chan *s3c_dma_chan_map[];
+
+/* the currently allocated channel information */
+extern struct s3c2410_dma_chan s3c2410_chans[];
+
+
--- /dev/null
+++ b/arch/arm/plat-s3c/include/plat/dma.h
@@ -0,0 +1,128 @@
+/* arch/arm/plat-s3c/include/plat/dma.h
+ *
+ * Copyright (C) 2003,2004,2006 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * Samsung S3C DMA support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+enum s3c2410_dma_buffresult {
+ S3C2410_RES_OK,
+ S3C2410_RES_ERR,
+ S3C2410_RES_ABORT
+};
+
+enum s3c2410_dmasrc {
+ S3C2410_DMASRC_HW, /* source is memory */
+ S3C2410_DMASRC_MEM /* source is hardware */
+};
+
+/* enum s3c2410_chan_op
+ *
+ * operation codes passed to the DMA code by the user, and also used
+ * to inform the current channel owner of any changes to the system state
+*/
+
+enum s3c2410_chan_op {
+ S3C2410_DMAOP_START,
+ S3C2410_DMAOP_STOP,
+ S3C2410_DMAOP_PAUSE,
+ S3C2410_DMAOP_RESUME,
+ S3C2410_DMAOP_FLUSH,
+ S3C2410_DMAOP_TIMEOUT, /* internal signal to handler */
+ S3C2410_DMAOP_STARTED, /* indicate channel started */
+};
+
+struct s3c2410_dma_client {
+ char *name;
+};
+
+struct s3c2410_dma_chan;
+
+/* s3c2410_dma_cbfn_t
+ *
+ * buffer callback routine type
+*/
+
+typedef void (*s3c2410_dma_cbfn_t)(struct s3c2410_dma_chan *,
+ void *buf, int size,
+ enum s3c2410_dma_buffresult result);
+
+typedef int (*s3c2410_dma_opfn_t)(struct s3c2410_dma_chan *,
+ enum s3c2410_chan_op );
+
+
+
+/* s3c2410_dma_request
+ *
+ * request a dma channel exclusivley
+*/
+
+extern int s3c2410_dma_request(unsigned int channel,
+ struct s3c2410_dma_client *, void *dev);
+
+
+/* s3c2410_dma_ctrl
+ *
+ * change the state of the dma channel
+*/
+
+extern int s3c2410_dma_ctrl(unsigned int channel, enum s3c2410_chan_op op);
+
+/* s3c2410_dma_setflags
+ *
+ * set the channel's flags to a given state
+*/
+
+extern int s3c2410_dma_setflags(unsigned int channel,
+ unsigned int flags);
+
+/* s3c2410_dma_free
+ *
+ * free the dma channel (will also abort any outstanding operations)
+*/
+
+extern int s3c2410_dma_free(unsigned int channel, struct s3c2410_dma_client *);
+
+/* s3c2410_dma_enqueue
+ *
+ * place the given buffer onto the queue of operations for the channel.
+ * The buffer must be allocated from dma coherent memory, or the Dcache/WB
+ * drained before the buffer is given to the DMA system.
+*/
+
+extern int s3c2410_dma_enqueue(unsigned int channel, void *id,
+ dma_addr_t data, int size);
+
+
+/* s3c2410_dma_config
+ *
+ * configure the dma channel
+*/
+
+extern int s3c2410_dma_config(unsigned int channel, int xferunit);
+
+/* s3c2410_dma_devconfig
+ *
+ * configure the device we're talking to
+*/
+
+extern int s3c2410_dma_devconfig(int channel, enum s3c2410_dmasrc source,
+ unsigned long devaddr);
+
+/* s3c2410_dma_getposition
+ *
+ * get the position that the dma transfer is currently at
+*/
+
+extern int s3c2410_dma_getposition(unsigned int channel,
+ dma_addr_t *src, dma_addr_t *dest);
+
+extern int s3c2410_dma_set_opfn(unsigned int, s3c2410_dma_opfn_t rtn);
+extern int s3c2410_dma_set_buffdone_fn(unsigned int, s3c2410_dma_cbfn_t rtn);
+
+
--- a/arch/arm/plat-s3c/Kconfig
+++ b/arch/arm/plat-s3c/Kconfig
@@ -150,6 +150,13 @@ config S3C_GPIO_CFG_S3C64XX
Internal configuration to enable S3C64XX style GPIO configuration
functions.
+# DMA
+
+config S3C_DMA
+ bool
+ help
+ Internal configuration for S3C DMA core
+
# device definitions to compile in
config S3C_DEV_HSMMC
--- a/arch/arm/plat-s3c/Makefile
+++ b/arch/arm/plat-s3c/Makefile
@@ -18,6 +18,10 @@ obj-y += pwm-clock.o
obj-y += gpio.o
obj-y += gpio-config.o
+# DMA support
+
+obj-$(CONFIG_S3C_DMA) += dma.o
+
# PM support
obj-$(CONFIG_PM) += pm.o
@@ -31,3 +35,5 @@ obj-$(CONFIG_S3C_DEV_HSMMC1) += dev-hsmm
obj-y += dev-i2c0.o
obj-$(CONFIG_S3C_DEV_I2C1) += dev-i2c1.o
obj-$(CONFIG_S3C_DEV_FB) += dev-fb.o
+obj-$(CONFIG_S3C_DMA) += dma.o
+
--- a/arch/arm/plat-s3c24xx/dma.c
+++ b/arch/arm/plat-s3c24xx/dma.c
@@ -31,10 +31,11 @@
#include <asm/irq.h>
#include <mach/hardware.h>
#include <mach/dma.h>
-
#include <mach/map.h>
-#include <plat/dma.h>
+#include <plat/dma-core.h>
+#include <plat/regs-dma.h>
+#include <plat/dma-plat.h>
/* io map for dma */
static void __iomem *dma_base;
@@ -44,8 +45,6 @@ static int dma_channels;
static struct s3c24xx_dma_selection dma_sel;
-/* dma channel state information */
-struct s3c2410_dma_chan s3c2410_chans[S3C2410_DMA_CHANNELS];
/* debugging functions */
@@ -135,21 +134,6 @@ dmadbg_showregs(const char *fname, int l
#define dbg_showchan(chan) do { } while(0)
#endif /* CONFIG_S3C2410_DMA_DEBUG */
-static struct s3c2410_dma_chan *dma_chan_map[DMACH_MAX];
-
-/* lookup_dma_channel
- *
- * change the dma channel number given into a real dma channel id
-*/
-
-static struct s3c2410_dma_chan *lookup_dma_channel(unsigned int channel)
-{
- if (channel & DMACH_LOW_LEVEL)
- return &s3c2410_chans[channel & ~DMACH_LOW_LEVEL];
- else
- return dma_chan_map[channel];
-}
-
/* s3c2410_dma_stats_timeout
*
* Update DMA stats from timeout info
@@ -214,8 +198,6 @@ s3c2410_dma_waitforload(struct s3c2410_d
return 0;
}
-
-
/* s3c2410_dma_loadbuffer
*
* load a buffer, and update the channel state
@@ -453,7 +435,7 @@ s3c2410_dma_canload(struct s3c2410_dma_c
int s3c2410_dma_enqueue(unsigned int channel, void *id,
dma_addr_t data, int size)
{
- struct s3c2410_dma_chan *chan = lookup_dma_channel(channel);
+ struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
struct s3c2410_dma_buf *buf;
unsigned long flags;
@@ -804,7 +786,7 @@ EXPORT_SYMBOL(s3c2410_dma_request);
int s3c2410_dma_free(unsigned int channel, struct s3c2410_dma_client *client)
{
- struct s3c2410_dma_chan *chan = lookup_dma_channel(channel);
+ struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
unsigned long flags;
if (chan == NULL)
@@ -836,7 +818,7 @@ int s3c2410_dma_free(unsigned int channe
chan->irq_claimed = 0;
if (!(channel & DMACH_LOW_LEVEL))
- dma_chan_map[channel] = NULL;
+ s3c_dma_chan_map[channel] = NULL;
local_irq_restore(flags);
@@ -995,7 +977,7 @@ static int s3c2410_dma_started(struct s3
int
s3c2410_dma_ctrl(unsigned int channel, enum s3c2410_chan_op op)
{
- struct s3c2410_dma_chan *chan = lookup_dma_channel(channel);
+ struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
if (chan == NULL)
return -EINVAL;
@@ -1038,14 +1020,13 @@ EXPORT_SYMBOL(s3c2410_dma_ctrl);
/* s3c2410_dma_config
*
* xfersize: size of unit in bytes (1,2,4)
- * dcon: base value of the DCONx register
*/
int s3c2410_dma_config(unsigned int channel,
- int xferunit,
- int dcon)
+ int xferunit)
{
- struct s3c2410_dma_chan *chan = lookup_dma_channel(channel);
+ struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
+ unsigned int dcon;
pr_debug("%s: chan=%d, xfer_unit=%d, dcon=%08x\n",
__func__, channel, xferunit, dcon);
@@ -1055,10 +1036,33 @@ int s3c2410_dma_config(unsigned int chan
pr_debug("%s: Initial dcon is %08x\n", __func__, dcon);
- dcon |= chan->dcon & dma_sel.dcon_mask;
+ dcon = chan->dcon & dma_sel.dcon_mask;
pr_debug("%s: New dcon is %08x\n", __func__, dcon);
+ switch (chan->req_ch) {
+ case DMACH_I2S_IN:
+ case DMACH_I2S_OUT:
+ case DMACH_PCM_IN:
+ case DMACH_PCM_OUT:
+ case DMACH_MIC_IN:
+ default:
+ dcon |= S3C2410_DCON_HANDSHAKE;
+ dcon |= S3C2410_DCON_SYNC_PCLK;
+ break;
+
+ case DMACH_SDI:
+ /* note, ensure if need HANDSHAKE or not */
+ dcon |= S3C2410_DCON_SYNC_PCLK;
+ break;
+
+ case DMACH_XD0:
+ case DMACH_XD1:
+ dcon |= S3C2410_DCON_HANDSHAKE;
+ dcon |= S3C2410_DCON_SYNC_HCLK;
+ break;
+ }
+
switch (xferunit) {
case 1:
dcon |= S3C2410_DCON_BYTE;
@@ -1089,10 +1093,10 @@ int s3c2410_dma_config(unsigned int chan
}
EXPORT_SYMBOL(s3c2410_dma_config);
-
+#if 0 /* moved to plat-s3c? */
int s3c2410_dma_setflags(unsigned int channel, unsigned int flags)
{
- struct s3c2410_dma_chan *chan = lookup_dma_channel(channel);
+ struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
if (chan == NULL)
return -EINVAL;
@@ -1105,43 +1109,7 @@ int s3c2410_dma_setflags(unsigned int ch
}
EXPORT_SYMBOL(s3c2410_dma_setflags);
-
-
-/* do we need to protect the settings of the fields from
- * irq?
-*/
-
-int s3c2410_dma_set_opfn(unsigned int channel, s3c2410_dma_opfn_t rtn)
-{
- struct s3c2410_dma_chan *chan = lookup_dma_channel(channel);
-
- if (chan == NULL)
- return -EINVAL;
-
- pr_debug("%s: chan=%p, op rtn=%p\n", __func__, chan, rtn);
-
- chan->op_fn = rtn;
-
- return 0;
-}
-
-EXPORT_SYMBOL(s3c2410_dma_set_opfn);
-
-int s3c2410_dma_set_buffdone_fn(unsigned int channel, s3c2410_dma_cbfn_t rtn)
-{
- struct s3c2410_dma_chan *chan = lookup_dma_channel(channel);
-
- if (chan == NULL)
- return -EINVAL;
-
- pr_debug("%s: chan=%p, callback rtn=%p\n", __func__, chan, rtn);
-
- chan->callback_fn = rtn;
-
- return 0;
-}
-
-EXPORT_SYMBOL(s3c2410_dma_set_buffdone_fn);
+#endif
/* s3c2410_dma_devconfig
*
@@ -1150,29 +1118,38 @@ EXPORT_SYMBOL(s3c2410_dma_set_buffdone_f
* source: S3C2410_DMASRC_HW: source is hardware
* S3C2410_DMASRC_MEM: source is memory
*
- * hwcfg: the value for xxxSTCn register,
- * bit 0: 0=increment pointer, 1=leave pointer
- * bit 1: 0=source is AHB, 1=source is APB
- *
* devaddr: physical address of the source
*/
int s3c2410_dma_devconfig(int channel,
enum s3c2410_dmasrc source,
- int hwcfg,
unsigned long devaddr)
{
- struct s3c2410_dma_chan *chan = lookup_dma_channel(channel);
+ struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
+ unsigned int hwcfg;
if (chan == NULL)
return -EINVAL;
- pr_debug("%s: source=%d, hwcfg=%08x, devaddr=%08lx\n",
- __func__, (int)source, hwcfg, devaddr);
+ pr_debug("%s: source=%d, devaddr=%08lx\n",
+ __func__, (int)source, devaddr);
chan->source = source;
chan->dev_addr = devaddr;
- chan->hw_cfg = hwcfg;
+
+ switch (chan->req_ch) {
+ case DMACH_XD0:
+ case DMACH_XD1:
+ hwcfg = 0; /* AHB */
+ break;
+
+ default:
+ hwcfg = S3C2410_DISRCC_APB;
+ }
+
+ /* always assume our peripheral desintation is a fixed
+ * address in memory. */
+ hwcfg |= S3C2410_DISRCC_INC;
switch (source) {
case S3C2410_DMASRC_HW:
@@ -1219,7 +1196,7 @@ EXPORT_SYMBOL(s3c2410_dma_devconfig);
int s3c2410_dma_getposition(unsigned int channel, dma_addr_t *src, dma_addr_t *dst)
{
- struct s3c2410_dma_chan *chan = lookup_dma_channel(channel);
+ struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
if (chan == NULL)
return -EINVAL;
@@ -1278,8 +1255,8 @@ static int s3c2410_dma_resume(struct sys
printk(KERN_INFO "dma%d: restoring configuration\n", cp->number);
- s3c2410_dma_config(no, cp->xfer_unit, cp->dcon);
- s3c2410_dma_devconfig(no, cp->source, cp->hw_cfg, cp->dev_addr);
+ s3c2410_dma_config(no, cp->xfer_unit);
+ s3c2410_dma_devconfig(no, cp->source, cp->dev_addr);
/* re-select the dma source for this channel */
@@ -1476,7 +1453,8 @@ static struct s3c2410_dma_chan *s3c2410_
found:
dmach = &s3c2410_chans[ch];
dmach->map = ch_map;
- dma_chan_map[channel] = dmach;
+ dmach->req_ch = channel;
+ s3c_dma_chan_map[channel] = dmach;
/* select the channel */
--- a/arch/arm/plat-s3c24xx/include/plat/dma.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/* linux/include/asm-arm/plat-s3c24xx/dma.h
- *
- * Copyright (C) 2006 Simtec Electronics
- * Ben Dooks <ben@simtec.co.uk>
- *
- * Samsung S3C24XX DMA support
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-extern struct sysdev_class dma_sysclass;
-extern struct s3c2410_dma_chan s3c2410_chans[S3C2410_DMA_CHANNELS];
-
-#define DMA_CH_VALID (1<<31)
-#define DMA_CH_NEVER (1<<30)
-
-struct s3c24xx_dma_addr {
- unsigned long from;
- unsigned long to;
-};
-
-/* struct s3c24xx_dma_map
- *
- * this holds the mapping information for the channel selected
- * to be connected to the specified device
-*/
-
-struct s3c24xx_dma_map {
- const char *name;
- struct s3c24xx_dma_addr hw_addr;
-
- unsigned long channels[S3C2410_DMA_CHANNELS];
- unsigned long channels_rx[S3C2410_DMA_CHANNELS];
-};
-
-struct s3c24xx_dma_selection {
- struct s3c24xx_dma_map *map;
- unsigned long map_size;
- unsigned long dcon_mask;
-
- void (*select)(struct s3c2410_dma_chan *chan,
- struct s3c24xx_dma_map *map);
-
- void (*direction)(struct s3c2410_dma_chan *chan,
- struct s3c24xx_dma_map *map,
- enum s3c2410_dmasrc dir);
-};
-
-extern int s3c24xx_dma_init_map(struct s3c24xx_dma_selection *sel);
-
-/* struct s3c24xx_dma_order_ch
- *
- * channel map for one of the `enum dma_ch` dma channels. the list
- * entry contains a set of low-level channel numbers, orred with
- * DMA_CH_VALID, which are checked in the order in the array.
-*/
-
-struct s3c24xx_dma_order_ch {
- unsigned int list[S3C2410_DMA_CHANNELS]; /* list of channels */
- unsigned int flags; /* flags */
-};
-
-/* struct s3c24xx_dma_order
- *
- * information provided by either the core or the board to give the
- * dma system a hint on how to allocate channels
-*/
-
-struct s3c24xx_dma_order {
- struct s3c24xx_dma_order_ch channels[DMACH_MAX];
-};
-
-extern int s3c24xx_dma_order_set(struct s3c24xx_dma_order *map);
-
-/* DMA init code, called from the cpu support code */
-
-extern int s3c2410_dma_init(void);
-
-extern int s3c24xx_dma_init(unsigned int channels, unsigned int irq,
- unsigned int stride);
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/include/plat/dma-plat.h
@@ -0,0 +1,84 @@
+/* linux/arch/arm/plat-s3c24xx/include/plat/dma-plat.h
+ *
+ * Copyright (C) 2006 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * Samsung S3C24XX DMA support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <plat/dma-core.h>
+
+extern struct sysdev_class dma_sysclass;
+extern struct s3c2410_dma_chan s3c2410_chans[S3C_DMA_CHANNELS];
+
+#define DMA_CH_VALID (1<<31)
+#define DMA_CH_NEVER (1<<30)
+
+struct s3c24xx_dma_addr {
+ unsigned long from;
+ unsigned long to;
+};
+
+/* struct s3c24xx_dma_map
+ *
+ * this holds the mapping information for the channel selected
+ * to be connected to the specified device
+*/
+
+struct s3c24xx_dma_map {
+ const char *name;
+ struct s3c24xx_dma_addr hw_addr;
+
+ unsigned long channels[S3C_DMA_CHANNELS];
+ unsigned long channels_rx[S3C_DMA_CHANNELS];
+};
+
+struct s3c24xx_dma_selection {
+ struct s3c24xx_dma_map *map;
+ unsigned long map_size;
+ unsigned long dcon_mask;
+
+ void (*select)(struct s3c2410_dma_chan *chan,
+ struct s3c24xx_dma_map *map);
+
+ void (*direction)(struct s3c2410_dma_chan *chan,
+ struct s3c24xx_dma_map *map,
+ enum s3c2410_dmasrc dir);
+};
+
+extern int s3c24xx_dma_init_map(struct s3c24xx_dma_selection *sel);
+
+/* struct s3c24xx_dma_order_ch
+ *
+ * channel map for one of the `enum dma_ch` dma channels. the list
+ * entry contains a set of low-level channel numbers, orred with
+ * DMA_CH_VALID, which are checked in the order in the array.
+*/
+
+struct s3c24xx_dma_order_ch {
+ unsigned int list[S3C_DMA_CHANNELS]; /* list of channels */
+ unsigned int flags; /* flags */
+};
+
+/* struct s3c24xx_dma_order
+ *
+ * information provided by either the core or the board to give the
+ * dma system a hint on how to allocate channels
+*/
+
+struct s3c24xx_dma_order {
+ struct s3c24xx_dma_order_ch channels[DMACH_MAX];
+};
+
+extern int s3c24xx_dma_order_set(struct s3c24xx_dma_order *map);
+
+/* DMA init code, called from the cpu support code */
+
+extern int s3c2410_dma_init(void);
+
+extern int s3c24xx_dma_init(unsigned int channels, unsigned int irq,
+ unsigned int stride);
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/include/plat/regs-dma.h
@@ -0,0 +1,145 @@
+/* arch/arm/mach-s3c2410/include/mach/dma.h
+ *
+ * Copyright (C) 2003,2004,2006 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * Samsung S3C24XX DMA support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+/* DMA Register definitions */
+
+#define S3C2410_DMA_DISRC (0x00)
+#define S3C2410_DMA_DISRCC (0x04)
+#define S3C2410_DMA_DIDST (0x08)
+#define S3C2410_DMA_DIDSTC (0x0C)
+#define S3C2410_DMA_DCON (0x10)
+#define S3C2410_DMA_DSTAT (0x14)
+#define S3C2410_DMA_DCSRC (0x18)
+#define S3C2410_DMA_DCDST (0x1C)
+#define S3C2410_DMA_DMASKTRIG (0x20)
+#define S3C2412_DMA_DMAREQSEL (0x24)
+#define S3C2443_DMA_DMAREQSEL (0x24)
+
+#define S3C2410_DISRCC_INC (1<<0)
+#define S3C2410_DISRCC_APB (1<<1)
+
+#define S3C2410_DMASKTRIG_STOP (1<<2)
+#define S3C2410_DMASKTRIG_ON (1<<1)
+#define S3C2410_DMASKTRIG_SWTRIG (1<<0)
+
+#define S3C2410_DCON_DEMAND (0<<31)
+#define S3C2410_DCON_HANDSHAKE (1<<31)
+#define S3C2410_DCON_SYNC_PCLK (0<<30)
+#define S3C2410_DCON_SYNC_HCLK (1<<30)
+
+#define S3C2410_DCON_INTREQ (1<<29)
+
+#define S3C2410_DCON_CH0_XDREQ0 (0<<24)
+#define S3C2410_DCON_CH0_UART0 (1<<24)
+#define S3C2410_DCON_CH0_SDI (2<<24)
+#define S3C2410_DCON_CH0_TIMER (3<<24)
+#define S3C2410_DCON_CH0_USBEP1 (4<<24)
+
+#define S3C2410_DCON_CH1_XDREQ1 (0<<24)
+#define S3C2410_DCON_CH1_UART1 (1<<24)
+#define S3C2410_DCON_CH1_I2SSDI (2<<24)
+#define S3C2410_DCON_CH1_SPI (3<<24)
+#define S3C2410_DCON_CH1_USBEP2 (4<<24)
+
+#define S3C2410_DCON_CH2_I2SSDO (0<<24)
+#define S3C2410_DCON_CH2_I2SSDI (1<<24)
+#define S3C2410_DCON_CH2_SDI (2<<24)
+#define S3C2410_DCON_CH2_TIMER (3<<24)
+#define S3C2410_DCON_CH2_USBEP3 (4<<24)
+
+#define S3C2410_DCON_CH3_UART2 (0<<24)
+#define S3C2410_DCON_CH3_SDI (1<<24)
+#define S3C2410_DCON_CH3_SPI (2<<24)
+#define S3C2410_DCON_CH3_TIMER (3<<24)
+#define S3C2410_DCON_CH3_USBEP4 (4<<24)
+
+#define S3C2410_DCON_SRCSHIFT (24)
+#define S3C2410_DCON_SRCMASK (7<<24)
+
+#define S3C2410_DCON_BYTE (0<<20)
+#define S3C2410_DCON_HALFWORD (1<<20)
+#define S3C2410_DCON_WORD (2<<20)
+
+#define S3C2410_DCON_AUTORELOAD (0<<22)
+#define S3C2410_DCON_NORELOAD (1<<22)
+#define S3C2410_DCON_HWTRIG (1<<23)
+
+#if defined(CONFIG_CPU_S3C2440) || defined(CONFIG_CPU_S3C2442)
+#define S3C2440_DIDSTC_CHKINT (1<<2)
+
+#define S3C2440_DCON_CH0_I2SSDO (5<<24)
+#define S3C2440_DCON_CH0_PCMIN (6<<24)
+
+#define S3C2440_DCON_CH1_PCMOUT (5<<24)
+#define S3C2440_DCON_CH1_SDI (6<<24)
+
+#define S3C2440_DCON_CH2_PCMIN (5<<24)
+#define S3C2440_DCON_CH2_MICIN (6<<24)
+
+#define S3C2440_DCON_CH3_MICIN (5<<24)
+#define S3C2440_DCON_CH3_PCMOUT (6<<24)
+#endif
+
+#ifdef CONFIG_CPU_S3C2412
+
+#define S3C2412_DMAREQSEL_SRC(x) ((x)<<1)
+
+#define S3C2412_DMAREQSEL_HW (1)
+
+#define S3C2412_DMAREQSEL_SPI0TX S3C2412_DMAREQSEL_SRC(0)
+#define S3C2412_DMAREQSEL_SPI0RX S3C2412_DMAREQSEL_SRC(1)
+#define S3C2412_DMAREQSEL_SPI1TX S3C2412_DMAREQSEL_SRC(2)
+#define S3C2412_DMAREQSEL_SPI1RX S3C2412_DMAREQSEL_SRC(3)
+#define S3C2412_DMAREQSEL_I2STX S3C2412_DMAREQSEL_SRC(4)
+#define S3C2412_DMAREQSEL_I2SRX S3C2412_DMAREQSEL_SRC(5)
+#define S3C2412_DMAREQSEL_TIMER S3C2412_DMAREQSEL_SRC(9)
+#define S3C2412_DMAREQSEL_SDI S3C2412_DMAREQSEL_SRC(10)
+#define S3C2412_DMAREQSEL_USBEP1 S3C2412_DMAREQSEL_SRC(13)
+#define S3C2412_DMAREQSEL_USBEP2 S3C2412_DMAREQSEL_SRC(14)
+#define S3C2412_DMAREQSEL_USBEP3 S3C2412_DMAREQSEL_SRC(15)
+#define S3C2412_DMAREQSEL_USBEP4 S3C2412_DMAREQSEL_SRC(16)
+#define S3C2412_DMAREQSEL_XDREQ0 S3C2412_DMAREQSEL_SRC(17)
+#define S3C2412_DMAREQSEL_XDREQ1 S3C2412_DMAREQSEL_SRC(18)
+#define S3C2412_DMAREQSEL_UART0_0 S3C2412_DMAREQSEL_SRC(19)
+#define S3C2412_DMAREQSEL_UART0_1 S3C2412_DMAREQSEL_SRC(20)
+#define S3C2412_DMAREQSEL_UART1_0 S3C2412_DMAREQSEL_SRC(21)
+#define S3C2412_DMAREQSEL_UART1_1 S3C2412_DMAREQSEL_SRC(22)
+#define S3C2412_DMAREQSEL_UART2_0 S3C2412_DMAREQSEL_SRC(23)
+#define S3C2412_DMAREQSEL_UART2_1 S3C2412_DMAREQSEL_SRC(24)
+
+#endif
+
+#define S3C2443_DMAREQSEL_SRC(x) ((x)<<1)
+
+#define S3C2443_DMAREQSEL_HW (1)
+
+#define S3C2443_DMAREQSEL_SPI0TX S3C2443_DMAREQSEL_SRC(0)
+#define S3C2443_DMAREQSEL_SPI0RX S3C2443_DMAREQSEL_SRC(1)
+#define S3C2443_DMAREQSEL_SPI1TX S3C2443_DMAREQSEL_SRC(2)
+#define S3C2443_DMAREQSEL_SPI1RX S3C2443_DMAREQSEL_SRC(3)
+#define S3C2443_DMAREQSEL_I2STX S3C2443_DMAREQSEL_SRC(4)
+#define S3C2443_DMAREQSEL_I2SRX S3C2443_DMAREQSEL_SRC(5)
+#define S3C2443_DMAREQSEL_TIMER S3C2443_DMAREQSEL_SRC(9)
+#define S3C2443_DMAREQSEL_SDI S3C2443_DMAREQSEL_SRC(10)
+#define S3C2443_DMAREQSEL_XDREQ0 S3C2443_DMAREQSEL_SRC(17)
+#define S3C2443_DMAREQSEL_XDREQ1 S3C2443_DMAREQSEL_SRC(18)
+#define S3C2443_DMAREQSEL_UART0_0 S3C2443_DMAREQSEL_SRC(19)
+#define S3C2443_DMAREQSEL_UART0_1 S3C2443_DMAREQSEL_SRC(20)
+#define S3C2443_DMAREQSEL_UART1_0 S3C2443_DMAREQSEL_SRC(21)
+#define S3C2443_DMAREQSEL_UART1_1 S3C2443_DMAREQSEL_SRC(22)
+#define S3C2443_DMAREQSEL_UART2_0 S3C2443_DMAREQSEL_SRC(23)
+#define S3C2443_DMAREQSEL_UART2_1 S3C2443_DMAREQSEL_SRC(24)
+#define S3C2443_DMAREQSEL_UART3_0 S3C2443_DMAREQSEL_SRC(25)
+#define S3C2443_DMAREQSEL_UART3_1 S3C2443_DMAREQSEL_SRC(26)
+#define S3C2443_DMAREQSEL_PCMOUT S3C2443_DMAREQSEL_SRC(27)
+#define S3C2443_DMAREQSEL_PCMIN S3C2443_DMAREQSEL_SRC(28)
+#define S3C2443_DMAREQSEL_MICIN S3C2443_DMAREQSEL_SRC(29)
--- a/arch/arm/plat-s3c24xx/Kconfig
+++ b/arch/arm/plat-s3c24xx/Kconfig
@@ -71,6 +71,7 @@ config PM_SIMTEC
config S3C2410_DMA
bool "S3C2410 DMA support"
depends on ARCH_S3C2410
+ select S3C_DMA
help
S3C2410 DMA support. This is needed for drivers like sound which
use the S3C2410's DMA system to move data to and from the
--- a/arch/arm/mach-s3c2410/dma.c
+++ b/arch/arm/mach-s3c2410/dma.c
@@ -17,14 +17,16 @@
#include <linux/sysdev.h>
#include <linux/serial_core.h>
+#include <mach/map.h>
#include <mach/dma.h>
#include <plat/cpu.h>
-#include <plat/dma.h>
+#include <plat/dma-plat.h>
#include <plat/regs-serial.h>
#include <mach/regs-gpio.h>
#include <plat/regs-ac97.h>
+#include <plat/regs-dma.h>
#include <mach/regs-mem.h>
#include <mach/regs-lcd.h>
#include <mach/regs-sdi.h>
--- a/arch/arm/mach-s3c2440/dma.c
+++ b/arch/arm/mach-s3c2440/dma.c
@@ -17,14 +17,16 @@
#include <linux/sysdev.h>
#include <linux/serial_core.h>
+#include <mach/map.h>
#include <mach/dma.h>
-#include <plat/dma.h>
+#include <plat/dma-plat.h>
#include <plat/cpu.h>
#include <plat/regs-serial.h>
#include <mach/regs-gpio.h>
#include <plat/regs-ac97.h>
+#include <plat/regs-dma.h>
#include <mach/regs-mem.h>
#include <mach/regs-lcd.h>
#include <mach/regs-sdi.h>
--- a/sound/soc/s3c24xx/s3c24xx-pcm.c
+++ b/sound/soc/s3c24xx/s3c24xx-pcm.c
@@ -218,24 +218,17 @@ static int s3c24xx_pcm_prepare(struct sn
* sync to pclk, half-word transfers to the IIS-FIFO. */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
s3c2410_dma_devconfig(prtd->params->channel,
- S3C2410_DMASRC_MEM, S3C2410_DISRCC_INC |
- S3C2410_DISRCC_APB, prtd->params->dma_addr);
-
- s3c2410_dma_config(prtd->params->channel,
- prtd->params->dma_size,
- S3C2410_DCON_SYNC_PCLK |
- S3C2410_DCON_HANDSHAKE);
+ S3C2410_DMASRC_MEM,
+ prtd->params->dma_addr);
} else {
- s3c2410_dma_config(prtd->params->channel,
- prtd->params->dma_size,
- S3C2410_DCON_HANDSHAKE |
- S3C2410_DCON_SYNC_PCLK);
-
s3c2410_dma_devconfig(prtd->params->channel,
- S3C2410_DMASRC_HW, 0x3,
- prtd->params->dma_addr);
+ S3C2410_DMASRC_HW,
+ prtd->params->dma_addr);
}
+ s3c2410_dma_config(prtd->params->channel,
+ prtd->params->dma_size);
+
/* flush the DMA channel */
s3c2410_dma_ctrl(prtd->params->channel, S3C2410_DMAOP_FLUSH);
prtd->dma_loaded = 0;
Reference in New Issue View Git Blame Copy Permalink