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ARM: SAMSUNG: remove unused DMA infrastructure 

Everything uses dmaengine now, so there is no reason to
keep this around any longer. Thanks to everyone who was involved
in moving the users over to use the dmaengine APIs.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
wifi-calibration
Arnd Bergmann 2015-01-24 13:09:54 +09:00 committed by Kukjin Kim
parent 32b0aa9aae
commit d50b9e2e78
23 changed files with 1 additions and 3428 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
Documentation/arm/Samsung-S3C24XX/DMA.txt
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@ -1,46 +0,0 @@
S3C2410 DMA
===========
Introduction
------------
The kernel provides an interface to manage DMA transfers
using the DMA channels in the CPU, so that the central
duty of managing channel mappings, and programming the
channel generators is in one place.
DMA Channel Ordering
--------------------
Many of the range do not have connections for the DMA
channels to all sources, which means that some devices
have a restricted number of channels that can be used.
To allow flexibility for each CPU type and board, the
DMA code can be given a DMA ordering structure which
allows the order of channel search to be specified, as
well as allowing the prohibition of certain claims.
struct s3c24xx_dma_order has a list of channels, and
each channel within has a slot for a list of DMA
channel numbers. The slots are searched in order for
the presence of a DMA channel number with DMA_CH_VALID
or-ed in.
If the order has the flag DMA_CH_NEVER set, then after
checking the channel list, the system will return no
found channel, thus denying the request.
A board support file can call s3c24xx_dma_order_set()
to register a complete ordering set. The routine will
copy the data, so the original can be discarded with
__initdata.
Authour
-------
Ben Dooks,
Copyright (c) 2007 Ben Dooks, Simtec Electronics
Licensed under the GPL v2

26
arch/arm/mach-exynos/include/mach/dma.h
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@ -1,26 +0,0 @@
/*
* Copyright (C) 2010 Samsung Electronics Co. Ltd.
* Jaswinder Singh <jassi.brar@samsung.com>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __MACH_DMA_H
#define __MACH_DMA_H
/* This platform uses the common DMA API driver for PL330 */
#include <plat/dma-pl330.h>
#endif /* __MACH_DMA_H */

42
arch/arm/mach-s3c24xx/Kconfig
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@ -29,7 +29,6 @@ config CPU_S3C2410
default y
select CPU_ARM920T
select S3C2410_COMMON_CLK
select S3C2410_DMA if S3C24XX_DMA
select ARM_S3C2410_CPUFREQ if ARM_S3C24XX_CPUFREQ
select S3C2410_PM if PM
help
@ -40,7 +39,6 @@ config CPU_S3C2412
bool "SAMSUNG S3C2412"
select CPU_ARM926T
select S3C2412_COMMON_CLK
select S3C2412_DMA if S3C24XX_DMA
select S3C2412_PM if PM
help
Support for the S3C2412 and S3C2413 SoCs from the S3C24XX line
@ -50,7 +48,6 @@ config CPU_S3C2416
select CPU_ARM926T
select S3C2416_PM if PM
select S3C2443_COMMON_CLK
select S3C2443_DMA if S3C24XX_DMA
help
Support for the S3C2416 SoC from the S3C24XX line
@ -59,7 +56,6 @@ config CPU_S3C2440
select CPU_ARM920T
select S3C2410_COMMON_CLK
select S3C2410_PM if PM
select S3C2440_DMA if S3C24XX_DMA
help
Support for S3C2440 Samsung Mobile CPU based systems.
@ -67,7 +63,6 @@ config CPU_S3C2442
bool "SAMSUNG S3C2442"
select CPU_ARM920T
select S3C2410_COMMON_CLK
select S3C2410_DMA if S3C24XX_DMA
select S3C2410_PM if PM
help
Support for S3C2442 Samsung Mobile CPU based systems.
@ -80,7 +75,6 @@ config CPU_S3C2443
bool "SAMSUNG S3C2443"
select CPU_ARM920T
select S3C2443_COMMON_CLK
select S3C2443_DMA if S3C24XX_DMA
help
Support for the S3C2443 SoC from the S3C24XX line
@ -114,27 +108,6 @@ config S3C24XX_SETUP_TS
help
Compile in platform device definition for Samsung TouchScreen.
config S3C24XX_DMA
bool "S3C2410 DMA support (deprecated)"
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
peripheral blocks.
config S3C2410_DMA_DEBUG
bool "S3C2410 DMA support debug"
depends on S3C2410_DMA
help
Enable debugging output for the DMA code. This option sends info
to the kernel log, at priority KERN_DEBUG.
config S3C2410_DMA
bool
depends on S3C24XX_DMA && (CPU_S3C2410 || CPU_S3C2442)
help
DMA device selection for S3C2410 and compatible CPUs
config S3C2410_PM
bool
help
@ -325,11 +298,6 @@ config CPU_S3C2412_ONLY
!CPU_S3C2442 && !CPU_S3C2443
default y
config S3C2412_DMA
bool
help
Internal config node for S3C2412 DMA support
config S3C2412_PM
bool
select S3C2412_PM_SLEEP
@ -438,11 +406,6 @@ endif # CPU_S3C2416
if CPU_S3C2440
config S3C2440_DMA
bool
help
Support for S3C2440 specific DMA code5A
config S3C2440_XTAL_12000000
bool
help
@ -601,11 +564,6 @@ endif # CPU_S3C2442
if CPU_S3C2443 || CPU_S3C2416
config S3C2443_DMA
bool
help
Internal config node for S3C2443 DMA support
config S3C2443_SETUP_SPI
bool
help

7
arch/arm/mach-s3c24xx/Makefile
View File

@ -12,12 +12,10 @@
obj-y += common.o
obj-$(CONFIG_CPU_S3C2410) += s3c2410.o
obj-$(CONFIG_S3C2410_DMA) += dma-s3c2410.o
obj-$(CONFIG_S3C2410_PLL) += pll-s3c2410.o
obj-$(CONFIG_S3C2410_PM) += pm-s3c2410.o sleep-s3c2410.o
obj-$(CONFIG_CPU_S3C2412) += s3c2412.o
obj-$(CONFIG_S3C2412_DMA) += dma-s3c2412.o
obj-$(CONFIG_S3C2412_PM) += pm-s3c2412.o
obj-$(CONFIG_S3C2412_PM_SLEEP) += sleep-s3c2412.o
@ -27,7 +25,6 @@ obj-$(CONFIG_S3C2416_PM) += pm-s3c2416.o
obj-$(CONFIG_CPU_S3C2440) += s3c2440.o
obj-$(CONFIG_CPU_S3C2442) += s3c2442.o
obj-$(CONFIG_CPU_S3C244X) += s3c244x.o
obj-$(CONFIG_S3C2440_DMA) += dma-s3c2440.o
obj-$(CONFIG_S3C2440_PLL_12000000) += pll-s3c2440-12000000.o
obj-$(CONFIG_S3C2440_PLL_16934400) += pll-s3c2440-16934400.o
@ -39,15 +36,11 @@ obj-$(CONFIG_PM) += pm.o irq-pm.o sleep.o
# common code
obj-$(CONFIG_S3C24XX_DMA) += dma.o
obj-$(CONFIG_S3C2410_CPUFREQ_UTILS) += cpufreq-utils.o
obj-$(CONFIG_S3C2410_IOTIMING) += iotiming-s3c2410.o
obj-$(CONFIG_S3C2412_IOTIMING) += iotiming-s3c2412.o
obj-$(CONFIG_S3C2443_DMA) += dma-s3c2443.o
#
# machine support
# following is ordered alphabetically by option text.

182
arch/arm/mach-s3c24xx/dma-s3c2410.c
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@ -1,182 +0,0 @@
/* linux/arch/arm/mach-s3c2410/dma.c
*
* Copyright (c) 2006 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* S3C2410 DMA selection
*
* http://armlinux.simtec.co.uk/
*
* 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 <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/serial_core.h>
#include <linux/serial_s3c.h>
#include <mach/map.h>
#include <mach/dma.h>
#include <plat/cpu.h>
#include <plat/dma-s3c24xx.h>
#include <mach/regs-gpio.h>
#include <plat/regs-dma.h>
#include <mach/regs-lcd.h>
#include <plat/regs-spi.h>
static struct s3c24xx_dma_map __initdata s3c2410_dma_mappings[] = {
[DMACH_XD0] = {
.name = "xdreq0",
.channels[0] = S3C2410_DCON_CH0_XDREQ0 | DMA_CH_VALID,
},
[DMACH_XD1] = {
.name = "xdreq1",
.channels[1] = S3C2410_DCON_CH1_XDREQ1 | DMA_CH_VALID,
},
[DMACH_SDI] = {
.name = "sdi",
.channels[0] = S3C2410_DCON_CH0_SDI | DMA_CH_VALID,
.channels[2] = S3C2410_DCON_CH2_SDI | DMA_CH_VALID,
.channels[3] = S3C2410_DCON_CH3_SDI | DMA_CH_VALID,
},
[DMACH_SPI0] = {
.name = "spi0",
.channels[1] = S3C2410_DCON_CH1_SPI | DMA_CH_VALID,
},
[DMACH_SPI1] = {
.name = "spi1",
.channels[3] = S3C2410_DCON_CH3_SPI | DMA_CH_VALID,
},
[DMACH_UART0] = {
.name = "uart0",
.channels[0] = S3C2410_DCON_CH0_UART0 | DMA_CH_VALID,
},
[DMACH_UART1] = {
.name = "uart1",
.channels[1] = S3C2410_DCON_CH1_UART1 | DMA_CH_VALID,
},
[DMACH_UART2] = {
.name = "uart2",
.channels[3] = S3C2410_DCON_CH3_UART2 | DMA_CH_VALID,
},
[DMACH_TIMER] = {
.name = "timer",
.channels[0] = S3C2410_DCON_CH0_TIMER | DMA_CH_VALID,
.channels[2] = S3C2410_DCON_CH2_TIMER | DMA_CH_VALID,
.channels[3] = S3C2410_DCON_CH3_TIMER | DMA_CH_VALID,
},
[DMACH_I2S_IN] = {
.name = "i2s-sdi",
.channels[1] = S3C2410_DCON_CH1_I2SSDI | DMA_CH_VALID,
.channels[2] = S3C2410_DCON_CH2_I2SSDI | DMA_CH_VALID,
},
[DMACH_I2S_OUT] = {
.name = "i2s-sdo",
.channels[2] = S3C2410_DCON_CH2_I2SSDO | DMA_CH_VALID,
},
[DMACH_USB_EP1] = {
.name = "usb-ep1",
.channels[0] = S3C2410_DCON_CH0_USBEP1 | DMA_CH_VALID,
},
[DMACH_USB_EP2] = {
.name = "usb-ep2",
.channels[1] = S3C2410_DCON_CH1_USBEP2 | DMA_CH_VALID,
},
[DMACH_USB_EP3] = {
.name = "usb-ep3",
.channels[2] = S3C2410_DCON_CH2_USBEP3 | DMA_CH_VALID,
},
[DMACH_USB_EP4] = {
.name = "usb-ep4",
.channels[3] =S3C2410_DCON_CH3_USBEP4 | DMA_CH_VALID,
},
};
static void s3c2410_dma_select(struct s3c2410_dma_chan *chan,
struct s3c24xx_dma_map *map)
{
chan->dcon = map->channels[chan->number] & ~DMA_CH_VALID;
}
static struct s3c24xx_dma_selection __initdata s3c2410_dma_sel = {
.select = s3c2410_dma_select,
.dcon_mask = 7 << 24,
.map = s3c2410_dma_mappings,
.map_size = ARRAY_SIZE(s3c2410_dma_mappings),
};
static struct s3c24xx_dma_order __initdata s3c2410_dma_order = {
.channels = {
[DMACH_SDI] = {
.list = {
[0] = 3 | DMA_CH_VALID,
[1] = 2 | DMA_CH_VALID,
[2] = 0 | DMA_CH_VALID,
},
},
[DMACH_I2S_IN] = {
.list = {
[0] = 1 | DMA_CH_VALID,
[1] = 2 | DMA_CH_VALID,
},
},
},
};
static int __init s3c2410_dma_add(struct device *dev,
struct subsys_interface *sif)
{
s3c2410_dma_init();
s3c24xx_dma_order_set(&s3c2410_dma_order);
return s3c24xx_dma_init_map(&s3c2410_dma_sel);
}
#if defined(CONFIG_CPU_S3C2410)
static struct subsys_interface s3c2410_dma_interface = {
.name = "s3c2410_dma",
.subsys = &s3c2410_subsys,
.add_dev = s3c2410_dma_add,
};
static int __init s3c2410_dma_drvinit(void)
{
return subsys_interface_register(&s3c2410_dma_interface);
}
arch_initcall(s3c2410_dma_drvinit);
static struct subsys_interface s3c2410a_dma_interface = {
.name = "s3c2410a_dma",
.subsys = &s3c2410a_subsys,
.add_dev = s3c2410_dma_add,
};
static int __init s3c2410a_dma_drvinit(void)
{
return subsys_interface_register(&s3c2410a_dma_interface);
}
arch_initcall(s3c2410a_dma_drvinit);
#endif
#if defined(CONFIG_CPU_S3C2442)
/* S3C2442 DMA contains the same selection table as the S3C2410 */
static struct subsys_interface s3c2442_dma_interface = {
.name = "s3c2442_dma",
.subsys = &s3c2442_subsys,
.add_dev = s3c2410_dma_add,
};
static int __init s3c2442_dma_drvinit(void)
{
return subsys_interface_register(&s3c2442_dma_interface);
}
arch_initcall(s3c2442_dma_drvinit);
#endif

150
arch/arm/mach-s3c24xx/dma-s3c2412.c
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@ -1,150 +0,0 @@
/* linux/arch/arm/mach-s3c2412/dma.c
*
* Copyright (c) 2006 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* S3C2412 DMA selection
*
* http://armlinux.simtec.co.uk/
*
* 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 <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/serial_core.h>
#include <linux/serial_s3c.h>
#include <linux/io.h>
#include <mach/dma.h>
#include <plat/dma-s3c24xx.h>
#include <plat/cpu.h>
#include <mach/regs-gpio.h>
#include <plat/regs-dma.h>
#include <mach/regs-lcd.h>
#include <plat/regs-spi.h>
#define MAP(x) { (x)| DMA_CH_VALID, (x)| DMA_CH_VALID, (x)| DMA_CH_VALID, (x)| DMA_CH_VALID }
static struct s3c24xx_dma_map __initdata s3c2412_dma_mappings[] = {
[DMACH_XD0] = {
.name = "xdreq0",
.channels = MAP(S3C2412_DMAREQSEL_XDREQ0),
},
[DMACH_XD1] = {
.name = "xdreq1",
.channels = MAP(S3C2412_DMAREQSEL_XDREQ1),
},
[DMACH_SDI] = {
.name = "sdi",
.channels = MAP(S3C2412_DMAREQSEL_SDI),
},
[DMACH_SPI0_RX] = {
.name = "spi0-rx",
.channels = MAP(S3C2412_DMAREQSEL_SPI0RX),
},
[DMACH_SPI0_TX] = {
.name = "spi0-tx",
.channels = MAP(S3C2412_DMAREQSEL_SPI0TX),
},
[DMACH_SPI1_RX] = {
.name = "spi1-rx",
.channels = MAP(S3C2412_DMAREQSEL_SPI1RX),
},
[DMACH_SPI1_TX] = {
.name = "spi1-tx",
.channels = MAP(S3C2412_DMAREQSEL_SPI1TX),
},
[DMACH_UART0] = {
.name = "uart0",
.channels = MAP(S3C2412_DMAREQSEL_UART0_0),
},
[DMACH_UART1] = {
.name = "uart1",
.channels = MAP(S3C2412_DMAREQSEL_UART1_0),
},
[DMACH_UART2] = {
.name = "uart2",
.channels = MAP(S3C2412_DMAREQSEL_UART2_0),
},
[DMACH_UART0_SRC2] = {
.name = "uart0",
.channels = MAP(S3C2412_DMAREQSEL_UART0_1),
},
[DMACH_UART1_SRC2] = {
.name = "uart1",
.channels = MAP(S3C2412_DMAREQSEL_UART1_1),
},
[DMACH_UART2_SRC2] = {
.name = "uart2",
.channels = MAP(S3C2412_DMAREQSEL_UART2_1),
},
[DMACH_TIMER] = {
.name = "timer",
.channels = MAP(S3C2412_DMAREQSEL_TIMER),
},
[DMACH_I2S_IN] = {
.name = "i2s-sdi",
.channels = MAP(S3C2412_DMAREQSEL_I2SRX),
},
[DMACH_I2S_OUT] = {
.name = "i2s-sdo",
.channels = MAP(S3C2412_DMAREQSEL_I2STX),
},
[DMACH_USB_EP1] = {
.name = "usb-ep1",
.channels = MAP(S3C2412_DMAREQSEL_USBEP1),
},
[DMACH_USB_EP2] = {
.name = "usb-ep2",
.channels = MAP(S3C2412_DMAREQSEL_USBEP2),
},
[DMACH_USB_EP3] = {
.name = "usb-ep3",
.channels = MAP(S3C2412_DMAREQSEL_USBEP3),
},
[DMACH_USB_EP4] = {
.name = "usb-ep4",
.channels = MAP(S3C2412_DMAREQSEL_USBEP4),
},
};
static void s3c2412_dma_select(struct s3c2410_dma_chan *chan,
struct s3c24xx_dma_map *map)
{
unsigned long chsel = map->channels[0] & (~DMA_CH_VALID);
writel(chsel | S3C2412_DMAREQSEL_HW,
chan->regs + S3C2412_DMA_DMAREQSEL);
}
static struct s3c24xx_dma_selection __initdata s3c2412_dma_sel = {
.select = s3c2412_dma_select,
.dcon_mask = 0,
.map = s3c2412_dma_mappings,
.map_size = ARRAY_SIZE(s3c2412_dma_mappings),
};
static int __init s3c2412_dma_add(struct device *dev,
struct subsys_interface *sif)
{
s3c2410_dma_init();
return s3c24xx_dma_init_map(&s3c2412_dma_sel);
}
static struct subsys_interface s3c2412_dma_interface = {
.name = "s3c2412_dma",
.subsys = &s3c2412_subsys,
.add_dev = s3c2412_dma_add,
};
static int __init s3c2412_dma_init(void)
{
return subsys_interface_register(&s3c2412_dma_interface);
}
arch_initcall(s3c2412_dma_init);

193
arch/arm/mach-s3c24xx/dma-s3c2440.c
View File

@ -1,193 +0,0 @@
/* linux/arch/arm/mach-s3c2440/dma.c
*
* Copyright (c) 2006 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* S3C2440 DMA selection
*
* http://armlinux.simtec.co.uk/
*
* 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 <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/serial_core.h>
#include <linux/serial_s3c.h>
#include <mach/map.h>
#include <mach/dma.h>
#include <plat/dma-s3c24xx.h>
#include <plat/cpu.h>
#include <mach/regs-gpio.h>
#include <plat/regs-dma.h>
#include <mach/regs-lcd.h>
#include <plat/regs-spi.h>
static struct s3c24xx_dma_map __initdata s3c2440_dma_mappings[] = {
[DMACH_XD0] = {
.name = "xdreq0",
.channels[0] = S3C2410_DCON_CH0_XDREQ0 | DMA_CH_VALID,
},
[DMACH_XD1] = {
.name = "xdreq1",
.channels[1] = S3C2410_DCON_CH1_XDREQ1 | DMA_CH_VALID,
},
[DMACH_SDI] = {
.name = "sdi",
.channels[0] = S3C2410_DCON_CH0_SDI | DMA_CH_VALID,
.channels[1] = S3C2440_DCON_CH1_SDI | DMA_CH_VALID,
.channels[2] = S3C2410_DCON_CH2_SDI | DMA_CH_VALID,
.channels[3] = S3C2410_DCON_CH3_SDI | DMA_CH_VALID,
},
[DMACH_SPI0] = {
.name = "spi0",
.channels[1] = S3C2410_DCON_CH1_SPI | DMA_CH_VALID,
},
[DMACH_SPI1] = {
.name = "spi1",
.channels[3] = S3C2410_DCON_CH3_SPI | DMA_CH_VALID,
},
[DMACH_UART0] = {
.name = "uart0",
.channels[0] = S3C2410_DCON_CH0_UART0 | DMA_CH_VALID,
},
[DMACH_UART1] = {
.name = "uart1",
.channels[1] = S3C2410_DCON_CH1_UART1 | DMA_CH_VALID,
},
[DMACH_UART2] = {
.name = "uart2",
.channels[3] = S3C2410_DCON_CH3_UART2 | DMA_CH_VALID,
},
[DMACH_TIMER] = {
.name = "timer",
.channels[0] = S3C2410_DCON_CH0_TIMER | DMA_CH_VALID,
.channels[2] = S3C2410_DCON_CH2_TIMER | DMA_CH_VALID,
.channels[3] = S3C2410_DCON_CH3_TIMER | DMA_CH_VALID,
},
[DMACH_I2S_IN] = {
.name = "i2s-sdi",
.channels[1] = S3C2410_DCON_CH1_I2SSDI | DMA_CH_VALID,
.channels[2] = S3C2410_DCON_CH2_I2SSDI | DMA_CH_VALID,
},
[DMACH_I2S_OUT] = {
.name = "i2s-sdo",
.channels[0] = S3C2440_DCON_CH0_I2SSDO | DMA_CH_VALID,
.channels[2] = S3C2410_DCON_CH2_I2SSDO | DMA_CH_VALID,
},
[DMACH_PCM_IN] = {
.name = "pcm-in",
.channels[0] = S3C2440_DCON_CH0_PCMIN | DMA_CH_VALID,
.channels[2] = S3C2440_DCON_CH2_PCMIN | DMA_CH_VALID,
},
[DMACH_PCM_OUT] = {
.name = "pcm-out",
.channels[1] = S3C2440_DCON_CH1_PCMOUT | DMA_CH_VALID,
.channels[3] = S3C2440_DCON_CH3_PCMOUT | DMA_CH_VALID,
},
[DMACH_MIC_IN] = {
.name = "mic-in",
.channels[2] = S3C2440_DCON_CH2_MICIN | DMA_CH_VALID,
.channels[3] = S3C2440_DCON_CH3_MICIN | DMA_CH_VALID,
},
[DMACH_USB_EP1] = {
.name = "usb-ep1",
.channels[0] = S3C2410_DCON_CH0_USBEP1 | DMA_CH_VALID,
},
[DMACH_USB_EP2] = {
.name = "usb-ep2",
.channels[1] = S3C2410_DCON_CH1_USBEP2 | DMA_CH_VALID,
},
[DMACH_USB_EP3] = {
.name = "usb-ep3",
.channels[2] = S3C2410_DCON_CH2_USBEP3 | DMA_CH_VALID,
},
[DMACH_USB_EP4] = {
.name = "usb-ep4",
.channels[3] = S3C2410_DCON_CH3_USBEP4 | DMA_CH_VALID,
},
};
static void s3c2440_dma_select(struct s3c2410_dma_chan *chan,
struct s3c24xx_dma_map *map)
{
chan->dcon = map->channels[chan->number] & ~DMA_CH_VALID;
}
static struct s3c24xx_dma_selection __initdata s3c2440_dma_sel = {
.select = s3c2440_dma_select,
.dcon_mask = 7 << 24,
.map = s3c2440_dma_mappings,
.map_size = ARRAY_SIZE(s3c2440_dma_mappings),
};
static struct s3c24xx_dma_order __initdata s3c2440_dma_order = {
.channels = {
[DMACH_SDI] = {
.list = {
[0] = 3 | DMA_CH_VALID,
[1] = 2 | DMA_CH_VALID,
[2] = 1 | DMA_CH_VALID,
[3] = 0 | DMA_CH_VALID,
},
},
[DMACH_I2S_IN] = {
.list = {
[0] = 1 | DMA_CH_VALID,
[1] = 2 | DMA_CH_VALID,
},
},
[DMACH_I2S_OUT] = {
.list = {
[0] = 2 | DMA_CH_VALID,
[1] = 1 | DMA_CH_VALID,
},
},
[DMACH_PCM_IN] = {
.list = {
[0] = 2 | DMA_CH_VALID,
[1] = 1 | DMA_CH_VALID,
},
},
[DMACH_PCM_OUT] = {
.list = {
[0] = 1 | DMA_CH_VALID,
[1] = 3 | DMA_CH_VALID,
},
},
[DMACH_MIC_IN] = {
.list = {
[0] = 3 | DMA_CH_VALID,
[1] = 2 | DMA_CH_VALID,
},
},
},
};
static int __init s3c2440_dma_add(struct device *dev,
struct subsys_interface *sif)
{
s3c2410_dma_init();
s3c24xx_dma_order_set(&s3c2440_dma_order);
return s3c24xx_dma_init_map(&s3c2440_dma_sel);
}
static struct subsys_interface s3c2440_dma_interface = {
.name = "s3c2440_dma",
.subsys = &s3c2440_subsys,
.add_dev = s3c2440_dma_add,
};
static int __init s3c2440_dma_init(void)
{
return subsys_interface_register(&s3c2440_dma_interface);
}
arch_initcall(s3c2440_dma_init);

179
arch/arm/mach-s3c24xx/dma-s3c2443.c
View File

@ -1,179 +0,0 @@
/* linux/arch/arm/mach-s3c2443/dma.c
*
* Copyright (c) 2007 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* S3C2443 DMA selection
*
* http://armlinux.simtec.co.uk/
*
* 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 <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/serial_core.h>
#include <linux/serial_s3c.h>
#include <linux/io.h>
#include <mach/dma.h>
#include <plat/dma-s3c24xx.h>
#include <plat/cpu.h>
#include <mach/regs-gpio.h>
#include <plat/regs-dma.h>
#include <mach/regs-lcd.h>
#include <plat/regs-spi.h>
#define MAP(x) { \
[0] = (x) | DMA_CH_VALID, \
[1] = (x) | DMA_CH_VALID, \
[2] = (x) | DMA_CH_VALID, \
[3] = (x) | DMA_CH_VALID, \
[4] = (x) | DMA_CH_VALID, \
[5] = (x) | DMA_CH_VALID, \
}
static struct s3c24xx_dma_map __initdata s3c2443_dma_mappings[] = {
[DMACH_XD0] = {
.name = "xdreq0",
.channels = MAP(S3C2443_DMAREQSEL_XDREQ0),
},
[DMACH_XD1] = {
.name = "xdreq1",
.channels = MAP(S3C2443_DMAREQSEL_XDREQ1),
},
[DMACH_SDI] = { /* only on S3C2443 */
.name = "sdi",
.channels = MAP(S3C2443_DMAREQSEL_SDI),
},
[DMACH_SPI0_RX] = {
.name = "spi0-rx",
.channels = MAP(S3C2443_DMAREQSEL_SPI0RX),
},
[DMACH_SPI0_TX] = {
.name = "spi0-tx",
.channels = MAP(S3C2443_DMAREQSEL_SPI0TX),
},
[DMACH_SPI1_RX] = { /* only on S3C2443/S3C2450 */
.name = "spi1-rx",
.channels = MAP(S3C2443_DMAREQSEL_SPI1RX),
},
[DMACH_SPI1_TX] = { /* only on S3C2443/S3C2450 */
.name = "spi1-tx",
.channels = MAP(S3C2443_DMAREQSEL_SPI1TX),
},
[DMACH_UART0] = {
.name = "uart0",
.channels = MAP(S3C2443_DMAREQSEL_UART0_0),
},
[DMACH_UART1] = {
.name = "uart1",
.channels = MAP(S3C2443_DMAREQSEL_UART1_0),
},
[DMACH_UART2] = {
.name = "uart2",
.channels = MAP(S3C2443_DMAREQSEL_UART2_0),
},
[DMACH_UART3] = {
.name = "uart3",
.channels = MAP(S3C2443_DMAREQSEL_UART3_0),
},
[DMACH_UART0_SRC2] = {
.name = "uart0",
.channels = MAP(S3C2443_DMAREQSEL_UART0_1),
},
[DMACH_UART1_SRC2] = {
.name = "uart1",
.channels = MAP(S3C2443_DMAREQSEL_UART1_1),
},
[DMACH_UART2_SRC2] = {
.name = "uart2",
.channels = MAP(S3C2443_DMAREQSEL_UART2_1),
},
[DMACH_UART3_SRC2] = {
.name = "uart3",
.channels = MAP(S3C2443_DMAREQSEL_UART3_1),
},
[DMACH_TIMER] = {
.name = "timer",
.channels = MAP(S3C2443_DMAREQSEL_TIMER),
},
[DMACH_I2S_IN] = {
.name = "i2s-sdi",
.channels = MAP(S3C2443_DMAREQSEL_I2SRX),
},
[DMACH_I2S_OUT] = {
.name = "i2s-sdo",
.channels = MAP(S3C2443_DMAREQSEL_I2STX),
},
[DMACH_PCM_IN] = {
.name = "pcm-in",
.channels = MAP(S3C2443_DMAREQSEL_PCMIN),
},
[DMACH_PCM_OUT] = {
.name = "pcm-out",
.channels = MAP(S3C2443_DMAREQSEL_PCMOUT),
},
[DMACH_MIC_IN] = {
.name = "mic-in",
.channels = MAP(S3C2443_DMAREQSEL_MICIN),
},
};
static void s3c2443_dma_select(struct s3c2410_dma_chan *chan,
struct s3c24xx_dma_map *map)
{
unsigned long chsel = map->channels[0] & (~DMA_CH_VALID);
writel(chsel | S3C2443_DMAREQSEL_HW,
chan->regs + S3C2443_DMA_DMAREQSEL);
}
static struct s3c24xx_dma_selection __initdata s3c2443_dma_sel = {
.select = s3c2443_dma_select,
.dcon_mask = 0,
.map = s3c2443_dma_mappings,
.map_size = ARRAY_SIZE(s3c2443_dma_mappings),
};
static int __init s3c2443_dma_add(struct device *dev,
struct subsys_interface *sif)
{
s3c24xx_dma_init(6, IRQ_S3C2443_DMA0, 0x100);
return s3c24xx_dma_init_map(&s3c2443_dma_sel);
}
#ifdef CONFIG_CPU_S3C2416
/* S3C2416 DMA contains the same selection table as the S3C2443 */
static struct subsys_interface s3c2416_dma_interface = {
.name = "s3c2416_dma",
.subsys = &s3c2416_subsys,
.add_dev = s3c2443_dma_add,
};
static int __init s3c2416_dma_init(void)
{
return subsys_interface_register(&s3c2416_dma_interface);
}
arch_initcall(s3c2416_dma_init);
#endif
#ifdef CONFIG_CPU_S3C2443
static struct subsys_interface s3c2443_dma_interface = {
.name = "s3c2443_dma",
.subsys = &s3c2443_subsys,
.add_dev = s3c2443_dma_add,
};
static int __init s3c2443_dma_init(void)
{
return subsys_interface_register(&s3c2443_dma_interface);
}
arch_initcall(s3c2443_dma_init);
#endif

1465
arch/arm/mach-s3c24xx/dma.c
View File

File diff suppressed because it is too large Load Diff

159
arch/arm/mach-s3c24xx/include/mach/dma.h
View File

@ -15,8 +15,6 @@
#include <linux/device.h>
#define MAX_DMA_TRANSFER_SIZE 0x100000 /* Data Unit is half word */
/* We use `virtual` dma channels to hide the fact we have only a limited
* number of DMA channels, and not of all of them (dependent on the device)
* can be attached to any DMA source. We therefore let the DMA core handle
@ -54,161 +52,4 @@ enum dma_ch {
DMACH_MAX, /* the end entry */
};
static inline bool samsung_dma_has_circular(void)
{
return false;
}
static inline bool samsung_dma_is_dmadev(void)
{
return false;
}
#include <plat/dma.h>
#define DMACH_LOW_LEVEL (1<<28) /* use this to specifiy hardware ch no */
/* we have 4 dma channels */
#if !defined(CONFIG_CPU_S3C2443) && !defined(CONFIG_CPU_S3C2416)
#define S3C_DMA_CHANNELS (4)
#else
#define S3C_DMA_CHANNELS (6)
#endif
/* types */
enum s3c2410_dma_state {
S3C2410_DMA_IDLE,
S3C2410_DMA_RUNNING,
S3C2410_DMA_PAUSED
};
/* enum s3c2410_dma_loadst
*
* This represents the state of the DMA engine, wrt to the loaded / running
* transfers. Since we don't have any way of knowing exactly the state of
* the DMA transfers, we need to know the state to make decisions on whether
* we can
*
* S3C2410_DMA_NONE
*
* There are no buffers loaded (the channel should be inactive)
*
* S3C2410_DMA_1LOADED
*
* There is one buffer loaded, however it has not been confirmed to be
* loaded by the DMA engine. This may be because the channel is not
* yet running, or the DMA driver decided that it was too costly to
* sit and wait for it to happen.
*
* S3C2410_DMA_1RUNNING
*
* The buffer has been confirmed running, and not finisged
*
* S3C2410_DMA_1LOADED_1RUNNING
*
* There is a buffer waiting to be loaded by the DMA engine, and one
* currently running.
*/
enum s3c2410_dma_loadst {
S3C2410_DMALOAD_NONE,
S3C2410_DMALOAD_1LOADED,
S3C2410_DMALOAD_1RUNNING,
S3C2410_DMALOAD_1LOADED_1RUNNING,
};
/* flags */
#define S3C2410_DMAF_SLOW (1<<0) /* slow, so don't worry about
* waiting for reloads */
#define S3C2410_DMAF_AUTOSTART (1<<1) /* auto-start if buffer queued */
#define S3C2410_DMAF_CIRCULAR (1 << 2) /* no circular dma support */
/* dma buffer */
struct s3c2410_dma_buf;
/* s3c2410_dma_buf
*
* internally used buffer structure to describe a queued or running
* buffer.
*/
struct s3c2410_dma_buf {
struct s3c2410_dma_buf *next;
int magic; /* magic */
int size; /* buffer size in bytes */
dma_addr_t data; /* start of DMA data */
dma_addr_t ptr; /* where the DMA got to [1] */
void *id; /* client's id */
};
/* [1] is this updated for both recv/send modes? */
struct s3c2410_dma_stats {
unsigned long loads;
unsigned long timeout_longest;
unsigned long timeout_shortest;
unsigned long timeout_avg;
unsigned long timeout_failed;
};
struct s3c2410_dma_map;
/* struct s3c2410_dma_chan
*
* full state information for each DMA channel
*/
struct s3c2410_dma_chan {
/* channel state flags and information */
unsigned char number; /* number of this dma channel */
unsigned char in_use; /* channel allocated */
unsigned char irq_claimed; /* irq claimed for channel */
unsigned char irq_enabled; /* irq enabled for channel */
unsigned char xfer_unit; /* size of an transfer */
/* channel state */
enum s3c2410_dma_state state;
enum s3c2410_dma_loadst load_state;
struct s3c2410_dma_client *client;
/* channel configuration */
enum dma_data_direction source;
enum dma_ch req_ch;
unsigned long dev_addr;
unsigned long load_timeout;
unsigned int flags; /* channel flags */
struct s3c24xx_dma_map *map; /* channel hw maps */
/* channel's hardware position and configuration */
void __iomem *regs; /* channels registers */
void __iomem *addr_reg; /* data address register */
unsigned int irq; /* channel irq */
unsigned long dcon; /* default value of DCON */
/* driver handles */
s3c2410_dma_cbfn_t callback_fn; /* buffer done callback */
s3c2410_dma_opfn_t op_fn; /* channel op callback */
/* stats gathering */
struct s3c2410_dma_stats *stats;
struct s3c2410_dma_stats stats_store;
/* buffer list and information */
struct s3c2410_dma_buf *curr; /* current dma buffer */
struct s3c2410_dma_buf *next; /* next buffer to load */
struct s3c2410_dma_buf *end; /* end of queue */
/* system device */
struct device dev;
};
typedef unsigned long dma_device_t;
#endif /* __ASM_ARCH_DMA_H */

15
arch/arm/mach-s3c64xx/include/mach/dma.h
View File

@ -51,21 +51,6 @@ enum dma_ch {
DMACH_MAX = 32
};
struct s3c2410_dma_client {
char *name;
};
static inline bool samsung_dma_has_circular(void)
{
return true;
}
static inline bool samsung_dma_is_dmadev(void)
{
return true;
}
#include <linux/amba/pl08x.h>
#include <plat/dma-ops.h>
#endif /* __ASM_ARCH_IRQ_H */

15
arch/arm/plat-samsung/Kconfig
View File

@ -236,13 +236,6 @@ config S3C_SETUP_CAMIF
help
Compile in common setup code for S3C CAMIF devices
# DMA
config S3C_DMA
bool
help
Internal configuration for S3C DMA core
config SAMSUNG_PM_GPIO
bool
default y if GPIO_SAMSUNG && PM
@ -250,14 +243,6 @@ config SAMSUNG_PM_GPIO
Include legacy GPIO power management code for platforms not using
pinctrl-samsung driver.
config SAMSUNG_DMADEV
bool "Use legacy Samsung DMA abstraction"
depends on CPU_S5PV210 || ARCH_S3C64XX
select DMADEVICES
default y
help
Use DMA device engine for PL330 DMAC.
endif
config S5P_DEV_MFC

6
arch/arm/plat-samsung/Makefile
View File

@ -26,12 +26,6 @@ obj-$(CONFIG_SAMSUNG_DEV_BACKLIGHT) += dev-backlight.o
obj-$(CONFIG_S3C_SETUP_CAMIF) += setup-camif.o
# DMA support
obj-$(CONFIG_S3C_DMA) += dma.o s3c-dma-ops.o
obj-$(CONFIG_SAMSUNG_DMADEV) += dma-ops.o
# PM support
obj-$(CONFIG_PM_SLEEP) += pm-common.o

146
arch/arm/plat-samsung/dma-ops.c
View File

@ -1,146 +0,0 @@
/* linux/arch/arm/plat-samsung/dma-ops.c
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Samsung DMA Operations
*
* 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 <linux/kernel.h>
#include <linux/errno.h>
#include <linux/amba/pl330.h>
#include <linux/scatterlist.h>
#include <linux/export.h>
#include <mach/dma.h>
#if defined(CONFIG_PL330_DMA)
#define dma_filter pl330_filter
#elif defined(CONFIG_S3C64XX_PL080)
#define dma_filter pl08x_filter_id
#endif
static unsigned samsung_dmadev_request(enum dma_ch dma_ch,
struct samsung_dma_req *param,
struct device *dev, char *ch_name)
{
dma_cap_mask_t mask;
dma_cap_zero(mask);
dma_cap_set(param->cap, mask);
if (dev->of_node)
return (unsigned)dma_request_slave_channel(dev, ch_name);
else
return (unsigned)dma_request_channel(mask, dma_filter,
(void *)dma_ch);
}
static int samsung_dmadev_release(unsigned ch, void *param)
{
dma_release_channel((struct dma_chan *)ch);
return 0;
}
static int samsung_dmadev_config(unsigned ch,
struct samsung_dma_config *param)
{
struct dma_chan *chan = (struct dma_chan *)ch;
struct dma_slave_config slave_config;
if (param->direction == DMA_DEV_TO_MEM) {
memset(&slave_config, 0, sizeof(struct dma_slave_config));
slave_config.direction = param->direction;
slave_config.src_addr = param->fifo;
slave_config.src_addr_width = param->width;
slave_config.src_maxburst = 1;
dmaengine_slave_config(chan, &slave_config);
} else if (param->direction == DMA_MEM_TO_DEV) {
memset(&slave_config, 0, sizeof(struct dma_slave_config));
slave_config.direction = param->direction;
slave_config.dst_addr = param->fifo;
slave_config.dst_addr_width = param->width;
slave_config.dst_maxburst = 1;
dmaengine_slave_config(chan, &slave_config);
} else {
pr_warn("unsupported direction\n");
return -EINVAL;
}
return 0;
}
static int samsung_dmadev_prepare(unsigned ch,
struct samsung_dma_prep *param)
{
struct scatterlist sg;
struct dma_chan *chan = (struct dma_chan *)ch;
struct dma_async_tx_descriptor *desc;
switch (param->cap) {
case DMA_SLAVE:
sg_init_table(&sg, 1);
sg_dma_len(&sg) = param->len;
sg_set_page(&sg, pfn_to_page(PFN_DOWN(param->buf)),
param->len, offset_in_page(param->buf));
sg_dma_address(&sg) = param->buf;
desc = dmaengine_prep_slave_sg(chan,
&sg, 1, param->direction, DMA_PREP_INTERRUPT);
break;
case DMA_CYCLIC:
desc = dmaengine_prep_dma_cyclic(chan, param->buf,
param->len, param->period, param->direction,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
break;
default:
dev_err(&chan->dev->device, "unsupported format\n");
return -EFAULT;
}
if (!desc) {
dev_err(&chan->dev->device, "cannot prepare cyclic dma\n");
return -EFAULT;
}
desc->callback = param->fp;
desc->callback_param = param->fp_param;
dmaengine_submit((struct dma_async_tx_descriptor *)desc);
return 0;
}
static inline int samsung_dmadev_trigger(unsigned ch)
{
dma_async_issue_pending((struct dma_chan *)ch);
return 0;
}
static inline int samsung_dmadev_flush(unsigned ch)
{
return dmaengine_terminate_all((struct dma_chan *)ch);
}
static struct samsung_dma_ops dmadev_ops = {
.request = samsung_dmadev_request,
.release = samsung_dmadev_release,
.config = samsung_dmadev_config,
.prepare = samsung_dmadev_prepare,
.trigger = samsung_dmadev_trigger,
.started = NULL,
.flush = samsung_dmadev_flush,
.stop = samsung_dmadev_flush,
};
void *samsung_dmadev_get_ops(void)
{
return &dmadev_ops;
}
EXPORT_SYMBOL(samsung_dmadev_get_ops);

84
arch/arm/plat-samsung/dma.c
View File

@ -1,84 +0,0 @@
/* linux/arch/arm/plat-samsung/dma.c
*
* Copyright (c) 2003-2009 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>
/* 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(enum dma_ch 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(enum dma_ch 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(enum dma_ch 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);

22
arch/arm/plat-samsung/include/plat/dma-core.h
View File

@ -1,22 +0,0 @@
/* 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[];

69
arch/arm/plat-samsung/include/plat/dma-ops.h
View File

@ -1,69 +0,0 @@
/* arch/arm/plat-samsung/include/plat/dma-ops.h
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Samsung 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.
*/
#ifndef __SAMSUNG_DMA_OPS_H_
#define __SAMSUNG_DMA_OPS_H_ __FILE__
#include <linux/dmaengine.h>
#include <mach/dma.h>
struct samsung_dma_req {
enum dma_transaction_type cap;
struct s3c2410_dma_client *client;
};
struct samsung_dma_prep {
enum dma_transaction_type cap;
enum dma_transfer_direction direction;
dma_addr_t buf;
unsigned long period;
unsigned long len;
void (*fp)(void *data);
void *fp_param;
};
struct samsung_dma_config {
enum dma_transfer_direction direction;
enum dma_slave_buswidth width;
dma_addr_t fifo;
};
struct samsung_dma_ops {
unsigned (*request)(enum dma_ch ch, struct samsung_dma_req *param,
struct device *dev, char *ch_name);
int (*release)(unsigned ch, void *param);
int (*config)(unsigned ch, struct samsung_dma_config *param);
int (*prepare)(unsigned ch, struct samsung_dma_prep *param);
int (*trigger)(unsigned ch);
int (*started)(unsigned ch);
int (*flush)(unsigned ch);
int (*stop)(unsigned ch);
};
extern void *samsung_dmadev_get_ops(void);
extern void *s3c_dma_get_ops(void);
static inline void *__samsung_dma_get_ops(void)
{
if (samsung_dma_is_dmadev())
return samsung_dmadev_get_ops();
else
return s3c_dma_get_ops();
}
/*
* samsung_dma_get_ops
* get the set of samsung dma operations
*/
#define samsung_dma_get_ops() __samsung_dma_get_ops()
#endif /* __SAMSUNG_DMA_OPS_H_ */

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arch/arm/plat-samsung/include/plat/dma-pl330.h
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/*
* Copyright (C) 2010 Samsung Electronics Co. Ltd.
* Jaswinder Singh <jassi.brar@samsung.com>
*
* 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.
*/
#ifndef __DMA_PL330_H_
#define __DMA_PL330_H_ __FILE__
/*
* PL330 can assign any channel to communicate with
* any of the peripherals attched to the DMAC.
* For the sake of consistency across client drivers,
* We keep the channel names unchanged and only add
* missing peripherals are added.
* Order is not important since DMA PL330 API driver
* use these just as IDs.
*/
enum dma_ch {
DMACH_UART0_RX = 0,
DMACH_UART0_TX,
DMACH_UART1_RX,
DMACH_UART1_TX,
DMACH_UART2_RX,
DMACH_UART2_TX,
DMACH_UART3_RX,
DMACH_UART3_TX,
DMACH_UART4_RX,
DMACH_UART4_TX,
DMACH_UART5_RX,
DMACH_UART5_TX,
DMACH_USI_RX,
DMACH_USI_TX,
DMACH_IRDA,
DMACH_I2S0_RX,
DMACH_I2S0_TX,
DMACH_I2S0S_TX,
DMACH_I2S1_RX,
DMACH_I2S1_TX,
DMACH_I2S2_RX,
DMACH_I2S2_TX,
DMACH_SPI0_RX,
DMACH_SPI0_TX,
DMACH_SPI1_RX,
DMACH_SPI1_TX,
DMACH_SPI2_RX,
DMACH_SPI2_TX,
DMACH_AC97_MICIN,
DMACH_AC97_PCMIN,
DMACH_AC97_PCMOUT,
DMACH_EXTERNAL,
DMACH_PWM,
DMACH_SPDIF,
DMACH_HSI_RX,
DMACH_HSI_TX,
DMACH_PCM0_TX,
DMACH_PCM0_RX,
DMACH_PCM1_TX,
DMACH_PCM1_RX,
DMACH_PCM2_TX,
DMACH_PCM2_RX,
DMACH_MSM_REQ3,
DMACH_MSM_REQ2,
DMACH_MSM_REQ1,
DMACH_MSM_REQ0,
DMACH_SLIMBUS0_RX,
DMACH_SLIMBUS0_TX,
DMACH_SLIMBUS0AUX_RX,
DMACH_SLIMBUS0AUX_TX,
DMACH_SLIMBUS1_RX,
DMACH_SLIMBUS1_TX,
DMACH_SLIMBUS2_RX,
DMACH_SLIMBUS2_TX,
DMACH_SLIMBUS3_RX,
DMACH_SLIMBUS3_TX,
DMACH_SLIMBUS4_RX,
DMACH_SLIMBUS4_TX,
DMACH_SLIMBUS5_RX,
DMACH_SLIMBUS5_TX,
DMACH_MIPI_HSI0,
DMACH_MIPI_HSI1,
DMACH_MIPI_HSI2,
DMACH_MIPI_HSI3,
DMACH_MIPI_HSI4,
DMACH_MIPI_HSI5,
DMACH_MIPI_HSI6,
DMACH_MIPI_HSI7,
DMACH_DISP1,
DMACH_MTOM_0,
DMACH_MTOM_1,
DMACH_MTOM_2,
DMACH_MTOM_3,
DMACH_MTOM_4,
DMACH_MTOM_5,
DMACH_MTOM_6,
DMACH_MTOM_7,
/* END Marker, also used to denote a reserved channel */
DMACH_MAX,
};
struct s3c2410_dma_client {
char *name;
};
static inline bool samsung_dma_has_circular(void)
{
return true;
}
static inline bool samsung_dma_is_dmadev(void)
{
return true;
}
#include <plat/dma-ops.h>
#endif /* __DMA_PL330_H_ */

73
arch/arm/plat-samsung/include/plat/dma-s3c24xx.h
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/* linux/arch/arm/plat-samsung/include/plat/dma-s3c24xx.h
*
* Copyright (C) 2006 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* Samsung S3C24XX DMA support - per SoC functions
*
* 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 bus_type dma_subsys;
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_map
*
* this holds the mapping information for the channel selected
* to be connected to the specified device
*/
struct s3c24xx_dma_map {
const char *name;
unsigned long channels[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);
};
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);

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arch/arm/plat-samsung/include/plat/dma.h
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/* arch/arm/plat-samsung/include/plat/dma.h
*
* Copyright (C) 2003-2006 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.
*/
#ifndef __PLAT_DMA_H
#define __PLAT_DMA_H
#include <linux/dma-mapping.h>
enum s3c2410_dma_buffresult {
S3C2410_RES_OK,
S3C2410_RES_ERR,
S3C2410_RES_ABORT
};
/* 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;
enum dma_ch;
/* 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(enum dma_ch channel,
struct s3c2410_dma_client *, void *dev);
/* s3c2410_dma_ctrl
*
* change the state of the dma channel
*/
extern int s3c2410_dma_ctrl(enum dma_ch channel, enum s3c2410_chan_op op);
/* s3c2410_dma_setflags
*
* set the channel's flags to a given state
*/
extern int s3c2410_dma_setflags(enum dma_ch channel,
unsigned int flags);
/* s3c2410_dma_free
*
* free the dma channel (will also abort any outstanding operations)
*/
extern int s3c2410_dma_free(enum dma_ch 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(enum dma_ch channel, void *id,
dma_addr_t data, int size);
/* s3c2410_dma_config
*
* configure the dma channel
*/
extern int s3c2410_dma_config(enum dma_ch channel, int xferunit);
/* s3c2410_dma_devconfig
*
* configure the device we're talking to
*/
extern int s3c2410_dma_devconfig(enum dma_ch channel,
enum dma_data_direction source, unsigned long devaddr);
/* s3c2410_dma_getposition
*
* get the position that the dma transfer is currently at
*/
extern int s3c2410_dma_getposition(enum dma_ch channel,
dma_addr_t *src, dma_addr_t *dest);
extern int s3c2410_dma_set_opfn(enum dma_ch, s3c2410_dma_opfn_t rtn);
extern int s3c2410_dma_set_buffdone_fn(enum dma_ch, s3c2410_dma_cbfn_t rtn);
#include <plat/dma-ops.h>
#endif

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arch/arm/plat-samsung/include/plat/regs-dma.h
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/* arch/arm/plat-samsung/include/plat/regs-dma.h
*
* Copyright (C) 2003-2006 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.
*/
#ifndef __ASM_PLAT_REGS_DMA_H
#define __ASM_PLAT_REGS_DMA_H __FILE__
#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 /* CONFIG_CPU_S3C2440 */
#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 /* CONFIG_CPU_S3C2412 */
#if defined(CONFIG_CPU_S3C2416) || defined(CONFIG_CPU_S3C2443)
#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)
#endif /* CONFIG_CPU_S3C2443 */
#endif /* __ASM_PLAT_REGS_DMA_H */

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arch/arm/plat-samsung/s3c-dma-ops.c
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/* linux/arch/arm/plat-samsung/s3c-dma-ops.c
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Samsung S3C-DMA Operations
*
* 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 <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/export.h>
#include <mach/dma.h>
struct cb_data {
void (*fp) (void *);
void *fp_param;
unsigned ch;
struct list_head node;
};
static LIST_HEAD(dma_list);
static void s3c_dma_cb(struct s3c2410_dma_chan *channel, void *param,
int size, enum s3c2410_dma_buffresult res)
{
struct cb_data *data = param;
data->fp(data->fp_param);
}
static unsigned s3c_dma_request(enum dma_ch dma_ch,
struct samsung_dma_req *param,
struct device *dev, char *ch_name)
{
struct cb_data *data;
if (s3c2410_dma_request(dma_ch, param->client, NULL) < 0) {
s3c2410_dma_free(dma_ch, param->client);
return 0;
}
if (param->cap == DMA_CYCLIC)
s3c2410_dma_setflags(dma_ch, S3C2410_DMAF_CIRCULAR);
data = kzalloc(sizeof(struct cb_data), GFP_KERNEL);
data->ch = dma_ch;
list_add_tail(&data->node, &dma_list);
return (unsigned)dma_ch;
}
static int s3c_dma_release(unsigned ch, void *param)
{
struct cb_data *data;
list_for_each_entry(data, &dma_list, node)
if (data->ch == ch)
break;
list_del(&data->node);
s3c2410_dma_free(ch, param);
kfree(data);
return 0;
}
static int s3c_dma_config(unsigned ch, struct samsung_dma_config *param)
{
s3c2410_dma_devconfig(ch, param->direction, param->fifo);
s3c2410_dma_config(ch, param->width);
return 0;
}
static int s3c_dma_prepare(unsigned ch, struct samsung_dma_prep *param)
{
struct cb_data *data;
dma_addr_t pos = param->buf;
dma_addr_t end = param->buf + param->len;
list_for_each_entry(data, &dma_list, node)
if (data->ch == ch)
break;
if (!data->fp) {
s3c2410_dma_set_buffdone_fn(ch, s3c_dma_cb);
data->fp = param->fp;
data->fp_param = param->fp_param;
}
if (param->cap != DMA_CYCLIC) {
s3c2410_dma_enqueue(ch, (void *)data, param->buf, param->len);
return 0;
}
while (pos < end) {
s3c2410_dma_enqueue(ch, (void *)data, pos, param->period);
pos += param->period;
}
return 0;
}
static inline int s3c_dma_trigger(unsigned ch)
{
return s3c2410_dma_ctrl(ch, S3C2410_DMAOP_START);
}
static inline int s3c_dma_started(unsigned ch)
{
return s3c2410_dma_ctrl(ch, S3C2410_DMAOP_STARTED);
}
static inline int s3c_dma_flush(unsigned ch)
{
return s3c2410_dma_ctrl(ch, S3C2410_DMAOP_FLUSH);
}
static inline int s3c_dma_stop(unsigned ch)
{
return s3c2410_dma_ctrl(ch, S3C2410_DMAOP_STOP);
}
static struct samsung_dma_ops s3c_dma_ops = {
.request = s3c_dma_request,
.release = s3c_dma_release,
.config = s3c_dma_config,
.prepare = s3c_dma_prepare,
.trigger = s3c_dma_trigger,
.started = s3c_dma_started,
.flush = s3c_dma_flush,
.stop = s3c_dma_stop,
};
void *s3c_dma_get_ops(void)
{
return &s3c_dma_ops;
}
EXPORT_SYMBOL(s3c_dma_get_ops);

2
drivers/dma/Kconfig
View File

@ -184,7 +184,7 @@ config TEGRA20_APB_DMA
config S3C24XX_DMAC
tristate "Samsung S3C24XX DMA support"
depends on ARCH_S3C24XX && !S3C24XX_DMA
depends on ARCH_S3C24XX
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help