[ARM] 5464/1: Freescale STMP platform support [7/10]
Sources: support for 378x boards Signed-off-by: dmitry pervushin <dpervushin@embeddedalley.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
dmitry pervushin
Russell King
parent
45d9108011
commit
bc19d892a1
2
arch/arm/mach-stmp378x/Makefile
Normal file
2
arch/arm/mach-stmp378x/Makefile
Normal file
@ -0,0 +1,2 @@
|
||||
obj-$(CONFIG_ARCH_STMP378X) += stmp378x.o
|
||||
obj-$(CONFIG_MACH_STMP378X) += stmp378x_devb.o
|
||||
3
arch/arm/mach-stmp378x/Makefile.boot
Normal file
3
arch/arm/mach-stmp378x/Makefile.boot
Normal file
@ -0,0 +1,3 @@
|
||||
zreladdr-y := 0x40008000
|
||||
params_phys-y := 0x40000100
|
||||
initrd_phys-y := 0x40800000
|
||||
225
arch/arm/mach-stmp378x/stmp378x.c
Normal file
225
arch/arm/mach-stmp378x/stmp378x.c
Normal file
@ -0,0 +1,225 @@
|
||||
/*
|
||||
* Freescale STMP378X platform support
|
||||
*
|
||||
* Embedded Alley Solutions, Inc <source@embeddedalley.com>
|
||||
*
|
||||
* Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
|
||||
* Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
|
||||
*/
|
||||
|
||||
/*
|
||||
* The code contained herein is licensed under the GNU General Public
|
||||
* License. You may obtain a copy of the GNU General Public License
|
||||
* Version 2 or later at the following locations:
|
||||
*
|
||||
* http://www.opensource.org/licenses/gpl-license.html
|
||||
* http://www.gnu.org/copyleft/gpl.html
|
||||
*/
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/irq.h>
|
||||
|
||||
#include <asm/dma.h>
|
||||
#include <asm/setup.h>
|
||||
#include <asm/mach-types.h>
|
||||
|
||||
#include <asm/mach/arch.h>
|
||||
#include <asm/mach/irq.h>
|
||||
#include <asm/mach/map.h>
|
||||
#include <asm/mach/time.h>
|
||||
|
||||
#include <mach/pins.h>
|
||||
#include <mach/pinmux.h>
|
||||
#include <mach/dma.h>
|
||||
#include <mach/hardware.h>
|
||||
#include <mach/system.h>
|
||||
#include <mach/platform.h>
|
||||
#include <mach/stmp3xxx.h>
|
||||
#include <mach/regs-icoll.h>
|
||||
#include <mach/regs-apbh.h>
|
||||
#include <mach/regs-apbx.h>
|
||||
|
||||
#include "stmp378x.h"
|
||||
/*
|
||||
* IRQ handling
|
||||
*/
|
||||
static void stmp378x_ack_irq(unsigned int irq)
|
||||
{
|
||||
/* Tell ICOLL to release IRQ line */
|
||||
HW_ICOLL_VECTOR_WR(0x0);
|
||||
|
||||
/* ACK current interrupt */
|
||||
HW_ICOLL_LEVELACK_WR(BV_ICOLL_LEVELACK_IRQLEVELACK__LEVEL0);
|
||||
|
||||
/* Barrier */
|
||||
(void) HW_ICOLL_STAT_RD();
|
||||
}
|
||||
|
||||
static void stmp378x_mask_irq(unsigned int irq)
|
||||
{
|
||||
/* IRQ disable */
|
||||
HW_ICOLL_INTERRUPTn_CLR(irq, BM_ICOLL_INTERRUPTn_ENABLE);
|
||||
}
|
||||
|
||||
static void stmp378x_unmask_irq(unsigned int irq)
|
||||
{
|
||||
/* IRQ enable */
|
||||
HW_ICOLL_INTERRUPTn_SET(irq, BM_ICOLL_INTERRUPTn_ENABLE);
|
||||
}
|
||||
|
||||
static struct irq_chip stmp378x_chip = {
|
||||
.ack = stmp378x_ack_irq,
|
||||
.mask = stmp378x_mask_irq,
|
||||
.unmask = stmp378x_unmask_irq,
|
||||
};
|
||||
|
||||
void __init stmp378x_init_irq(void)
|
||||
{
|
||||
stmp3xxx_init_irq(&stmp378x_chip);
|
||||
}
|
||||
|
||||
/*
|
||||
* DMA interrupt handling
|
||||
*/
|
||||
void stmp3xxx_arch_dma_enable_interrupt(int channel)
|
||||
{
|
||||
int dmabus = channel / 16;
|
||||
|
||||
switch (dmabus) {
|
||||
case STMP3XXX_BUS_APBH:
|
||||
HW_APBH_CTRL1_SET(1 << (16 + (channel % 16)));
|
||||
HW_APBH_CTRL2_SET(1 << (16 + (channel % 16)));
|
||||
break;
|
||||
|
||||
case STMP3XXX_BUS_APBX:
|
||||
HW_APBX_CTRL1_SET(1 << (16 + (channel % 16)));
|
||||
HW_APBX_CTRL2_SET(1 << (16 + (channel % 16)));
|
||||
break;
|
||||
}
|
||||
}
|
||||
EXPORT_SYMBOL(stmp3xxx_arch_dma_enable_interrupt);
|
||||
|
||||
void stmp3xxx_arch_dma_clear_interrupt(int channel)
|
||||
{
|
||||
int dmabus = channel / 16;
|
||||
|
||||
switch (dmabus) {
|
||||
case STMP3XXX_BUS_APBH:
|
||||
HW_APBH_CTRL1_CLR(1 << (channel % 16));
|
||||
HW_APBH_CTRL2_CLR(1 << (channel % 16));
|
||||
break;
|
||||
|
||||
case STMP3XXX_BUS_APBX:
|
||||
HW_APBX_CTRL1_CLR(1 << (channel % 16));
|
||||
HW_APBX_CTRL2_CLR(1 << (channel % 16));
|
||||
break;
|
||||
}
|
||||
}
|
||||
EXPORT_SYMBOL(stmp3xxx_arch_dma_clear_interrupt);
|
||||
|
||||
int stmp3xxx_arch_dma_is_interrupt(int channel)
|
||||
{
|
||||
int dmabus = channel / 16;
|
||||
int r = 0;
|
||||
|
||||
switch (dmabus) {
|
||||
case STMP3XXX_BUS_APBH:
|
||||
r = HW_APBH_CTRL1_RD() & (1 << (channel % 16));
|
||||
break;
|
||||
|
||||
case STMP3XXX_BUS_APBX:
|
||||
r = HW_APBX_CTRL1_RD() & (1 << (channel % 16));
|
||||
break;
|
||||
}
|
||||
return r;
|
||||
}
|
||||
EXPORT_SYMBOL(stmp3xxx_arch_dma_is_interrupt);
|
||||
|
||||
void stmp3xxx_arch_dma_reset_channel(int channel)
|
||||
{
|
||||
int dmabus = channel / 16;
|
||||
unsigned chbit = 1 << (channel % 16);
|
||||
|
||||
switch (dmabus) {
|
||||
case STMP3XXX_BUS_APBH:
|
||||
/* Reset channel and wait for it to complete */
|
||||
HW_APBH_CTRL0_SET(chbit <<
|
||||
BP_APBH_CTRL0_RESET_CHANNEL);
|
||||
while (HW_APBH_CTRL0_RD() &
|
||||
(chbit << BP_APBH_CTRL0_RESET_CHANNEL))
|
||||
continue;
|
||||
break;
|
||||
|
||||
case STMP3XXX_BUS_APBX:
|
||||
/* Reset channel and wait for it to complete */
|
||||
HW_APBX_CHANNEL_CTRL_SET(
|
||||
BF_APBX_CHANNEL_CTRL_RESET_CHANNEL(chbit));
|
||||
while (HW_APBX_CHANNEL_CTRL_RD() &
|
||||
BF_APBX_CHANNEL_CTRL_RESET_CHANNEL(chbit))
|
||||
continue;
|
||||
break;
|
||||
}
|
||||
}
|
||||
EXPORT_SYMBOL(stmp3xxx_arch_dma_reset_channel);
|
||||
|
||||
void stmp3xxx_arch_dma_freeze(int channel)
|
||||
{
|
||||
int dmabus = channel / 16;
|
||||
unsigned chbit = 1 << (channel % 16);
|
||||
|
||||
switch (dmabus) {
|
||||
case STMP3XXX_BUS_APBH:
|
||||
HW_APBH_CTRL0_SET(1<<chbit);
|
||||
break;
|
||||
case STMP3XXX_BUS_APBX:
|
||||
HW_APBX_CHANNEL_CTRL_SET(1<<chbit);
|
||||
break;
|
||||
}
|
||||
}
|
||||
EXPORT_SYMBOL(stmp3xxx_arch_dma_freeze);
|
||||
|
||||
void stmp3xxx_arch_dma_unfreeze(int channel)
|
||||
{
|
||||
int dmabus = channel / 16;
|
||||
unsigned chbit = 1 << (channel % 16);
|
||||
|
||||
switch (dmabus) {
|
||||
case STMP3XXX_BUS_APBH:
|
||||
HW_APBH_CTRL0_CLR(1<<chbit);
|
||||
break;
|
||||
case STMP3XXX_BUS_APBX:
|
||||
HW_APBX_CHANNEL_CTRL_CLR(1<<chbit);
|
||||
break;
|
||||
}
|
||||
}
|
||||
EXPORT_SYMBOL(stmp3xxx_arch_dma_unfreeze);
|
||||
|
||||
/*
|
||||
* The registers are all very closely mapped, so we might as well map them all
|
||||
* with a single mapping
|
||||
*
|
||||
* Logical Physical
|
||||
* f0000000 80000000 On-chip registers
|
||||
* f1000000 00000000 256k on-chip SRAM
|
||||
*/
|
||||
|
||||
static struct map_desc stmp378x_io_desc[] __initdata = {
|
||||
{
|
||||
.virtual = (u32)STMP3XXX_REGS_BASE,
|
||||
.pfn = __phys_to_pfn(STMP3XXX_REGS_PHBASE),
|
||||
.length = STMP3XXX_REGS_SIZE,
|
||||
.type = MT_DEVICE,
|
||||
},
|
||||
{
|
||||
.virtual = (u32)STMP3XXX_OCRAM_BASE,
|
||||
.pfn = __phys_to_pfn(STMP3XXX_OCRAM_PHBASE),
|
||||
.length = STMP3XXX_OCRAM_SIZE,
|
||||
.type = MT_DEVICE,
|
||||
},
|
||||
};
|
||||
|
||||
void __init stmp378x_map_io(void)
|
||||
{
|
||||
iotable_init(stmp378x_io_desc, ARRAY_SIZE(stmp378x_io_desc));
|
||||
}
|
||||
24
arch/arm/mach-stmp378x/stmp378x.h
Normal file
24
arch/arm/mach-stmp378x/stmp378x.h
Normal file
@ -0,0 +1,24 @@
|
||||
/*
|
||||
* Freescale STMP37XX/STMP378X internal functions and data declarations
|
||||
*
|
||||
* Embedded Alley Solutions, Inc <source@embeddedalley.com>
|
||||
*
|
||||
* Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
|
||||
* Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
|
||||
*/
|
||||
|
||||
/*
|
||||
* The code contained herein is licensed under the GNU General Public
|
||||
* License. You may obtain a copy of the GNU General Public License
|
||||
* Version 2 or later at the following locations:
|
||||
*
|
||||
* http://www.opensource.org/licenses/gpl-license.html
|
||||
* http://www.gnu.org/copyleft/gpl.html
|
||||
*/
|
||||
#ifndef __MACH_STMP378X_H
|
||||
#define __MACH_STMP378X_H
|
||||
|
||||
void stmp378x_map_io(void);
|
||||
void stmp378x_init_irq(void);
|
||||
|
||||
#endif /* __MACH_STMP378X_COMMON_H */
|
||||
80
arch/arm/mach-stmp378x/stmp378x_devb.c
Normal file
80
arch/arm/mach-stmp378x/stmp378x_devb.c
Normal file
@ -0,0 +1,80 @@
|
||||
/*
|
||||
* Freescale STMP378X development board support
|
||||
*
|
||||
* Embedded Alley Solutions, Inc <source@embeddedalley.com>
|
||||
*
|
||||
* Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
|
||||
* Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
|
||||
*/
|
||||
|
||||
/*
|
||||
* The code contained herein is licensed under the GNU General Public
|
||||
* License. You may obtain a copy of the GNU General Public License
|
||||
* Version 2 or later at the following locations:
|
||||
*
|
||||
* http://www.opensource.org/licenses/gpl-license.html
|
||||
* http://www.gnu.org/copyleft/gpl.html
|
||||
*/
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/platform_device.h>
|
||||
|
||||
#include <asm/setup.h>
|
||||
#include <asm/mach-types.h>
|
||||
#include <asm/mach/arch.h>
|
||||
|
||||
#include <mach/pins.h>
|
||||
#include <mach/pinmux.h>
|
||||
#include <mach/stmp3xxx.h>
|
||||
|
||||
#include "stmp378x.h"
|
||||
|
||||
static struct platform_device *devices[] = {
|
||||
&stmp3xxx_dbguart,
|
||||
};
|
||||
|
||||
static struct pin_desc dbguart_pins_0[] = {
|
||||
{ PINID_PWM0, PIN_FUN3, },
|
||||
{ PINID_PWM1, PIN_FUN3, },
|
||||
};
|
||||
|
||||
static struct pin_group dbguart_pins[] = {
|
||||
[0] = {
|
||||
.pins = dbguart_pins_0,
|
||||
.nr_pins = ARRAY_SIZE(dbguart_pins_0),
|
||||
},
|
||||
};
|
||||
|
||||
static int dbguart_pins_control(int id, int request)
|
||||
{
|
||||
int r = 0;
|
||||
|
||||
if (request)
|
||||
r = stmp3xxx_request_pin_group(&dbguart_pins[id], "debug uart");
|
||||
else
|
||||
stmp3xxx_release_pin_group(&dbguart_pins[id], "debug uart");
|
||||
return r;
|
||||
}
|
||||
|
||||
static void __init stmp378x_devb_init(void)
|
||||
{
|
||||
stmp3xxx_pinmux_init(NR_REAL_IRQS);
|
||||
|
||||
/* init stmp3xxx platform */
|
||||
stmp3xxx_init();
|
||||
|
||||
stmp3xxx_dbguart.dev.platform_data = dbguart_pins_control;
|
||||
|
||||
/* add board's devices */
|
||||
platform_add_devices(devices, ARRAY_SIZE(devices));
|
||||
}
|
||||
|
||||
MACHINE_START(STMP378X, "STMP378X")
|
||||
.phys_io = 0x80000000,
|
||||
.io_pg_offst = ((0xf0000000) >> 18) & 0xfffc,
|
||||
.boot_params = 0x40000100,
|
||||
.map_io = stmp378x_map_io,
|
||||
.init_irq = stmp378x_init_irq,
|
||||
.timer = &stmp3xxx_timer,
|
||||
.init_machine = stmp378x_devb_init,
|
||||
MACHINE_END
|
||||
Loading…
Reference in New Issue
Block a user