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[ARM] 4578/1: CM-x270: PCMCIA support 

This patch provides support for PCMCIA on CM-X270

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Mike Rapoport 2007-09-23 16:00:20 +01:00 committed by Russell King
parent a8fc078955
commit 87944f3361
2 changed files with 176 additions and 0 deletions
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1
drivers/pcmcia/Makefile
View File

@ -69,4 +69,5 @@ sa1100_cs-$(CONFIG_SA1100_SIMPAD) += sa1100_simpad.o
pxa2xx_cs-$(CONFIG_ARCH_LUBBOCK) += pxa2xx_lubbock.o sa1111_generic.o
pxa2xx_cs-$(CONFIG_MACH_MAINSTONE) += pxa2xx_mainstone.o
pxa2xx_cs-$(CONFIG_PXA_SHARPSL) += pxa2xx_sharpsl.o
pxa2xx_cs-$(CONFIG_MACH_ARMCORE) += pxa2xx_cm_x270.o

175
drivers/pcmcia/pxa2xx_cm_x270.c Normal file
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@ -0,0 +1,175 @@
/*
* linux/drivers/pcmcia/pxa/pxa_cm_x270.c
*
* 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.
*
* Compulab Ltd., 2003, 2007
* Mike Rapoport <mike@compulab.co.il>
*
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <pcmcia/ss.h>
#include <asm/hardware.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/cm-x270.h>
#include "soc_common.h"
static struct pcmcia_irqs irqs[] = {
{ 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" },
{ 1, PCMCIA_S1_CD_VALID, "PCMCIA1 CD" },
};
static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) |
GPIO_bit(GPIO49_nPWE) |
GPIO_bit(GPIO50_nPIOR) |
GPIO_bit(GPIO51_nPIOW) |
GPIO_bit(GPIO85_nPCE_1) |
GPIO_bit(GPIO54_nPCE_2);
pxa_gpio_mode(GPIO48_nPOE_MD);
pxa_gpio_mode(GPIO49_nPWE_MD);
pxa_gpio_mode(GPIO50_nPIOR_MD);
pxa_gpio_mode(GPIO51_nPIOW_MD);
pxa_gpio_mode(GPIO85_nPCE_1_MD);
pxa_gpio_mode(GPIO54_nPCE_2_MD);
pxa_gpio_mode(GPIO55_nPREG_MD);
pxa_gpio_mode(GPIO56_nPWAIT_MD);
pxa_gpio_mode(GPIO57_nIOIS16_MD);
/* Reset signal */
pxa_gpio_mode(GPIO53_nPCE_2 | GPIO_OUT);
GPCR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2);
set_irq_type(PCMCIA_S0_CD_VALID, IRQ_TYPE_EDGE_BOTH);
set_irq_type(PCMCIA_S1_CD_VALID, IRQ_TYPE_EDGE_BOTH);
/* irq's for slots: */
set_irq_type(PCMCIA_S0_RDYINT, IRQ_TYPE_EDGE_FALLING);
set_irq_type(PCMCIA_S1_RDYINT, IRQ_TYPE_EDGE_FALLING);
skt->irq = (skt->nr == 0) ? PCMCIA_S0_RDYINT : PCMCIA_S1_RDYINT;
return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
set_irq_type(IRQ_TO_GPIO(PCMCIA_S0_CD_VALID), IRQ_TYPE_NONE);
set_irq_type(IRQ_TO_GPIO(PCMCIA_S1_CD_VALID), IRQ_TYPE_NONE);
set_irq_type(IRQ_TO_GPIO(PCMCIA_S0_RDYINT), IRQ_TYPE_NONE);
set_irq_type(IRQ_TO_GPIO(PCMCIA_S1_RDYINT), IRQ_TYPE_NONE);
}
static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
struct pcmcia_state *state)
{
state->detect = (PCC_DETECT(skt->nr) == 0) ? 1 : 0;
state->ready = (PCC_READY(skt->nr) == 0) ? 0 : 1;
state->bvd1 = 1;
state->bvd2 = 1;
state->vs_3v = 0;
state->vs_Xv = 0;
state->wrprot = 0; /* not available */
}
static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
const socket_state_t *state)
{
GPSR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE);
pxa_gpio_mode(GPIO49_nPWE | GPIO_OUT);
switch (skt->nr) {
case 0:
if (state->flags & SS_RESET) {
GPCR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE);
GPSR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2);
udelay(10);
GPCR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2);
GPSR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE);
}
break;
case 1:
if (state->flags & SS_RESET) {
GPCR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE);
GPSR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2);
udelay(10);
GPCR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2);
GPSR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE);
}
break;
}
pxa_gpio_mode(GPIO49_nPWE_MD);
return 0;
}
static void cmx270_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
}
static void cmx270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
}
static struct pcmcia_low_level cmx270_pcmcia_ops = {
.owner = THIS_MODULE,
.hw_init = cmx270_pcmcia_hw_init,
.hw_shutdown = cmx270_pcmcia_shutdown,
.socket_state = cmx270_pcmcia_socket_state,
.configure_socket = cmx270_pcmcia_configure_socket,
.socket_init = cmx270_pcmcia_socket_init,
.socket_suspend = cmx270_pcmcia_socket_suspend,
.nr = 2,
};
static struct platform_device *cmx270_pcmcia_device;
static int __init cmx270_pcmcia_init(void)
{
int ret;
cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
if (!cmx270_pcmcia_device)
return -ENOMEM;
cmx270_pcmcia_device->dev.platform_data = &cmx270_pcmcia_ops;
printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
ret = platform_device_add(cmx270_pcmcia_device);
if (ret)
platform_device_put(cmx270_pcmcia_device);
return ret;
}
static void __exit cmx270_pcmcia_exit(void)
{
platform_device_unregister(cmx270_pcmcia_device);
}
module_init(cmx270_pcmcia_init);
module_exit(cmx270_pcmcia_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
MODULE_DESCRIPTION("CM-x270 PCMCIA driver");