mirror of
https://github.com/torvalds/linux.git
synced 2024-11-16 17:12:06 +00:00
87944f3361
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>
176 lines
4.4 KiB
C
176 lines
4.4 KiB
C
/*
|
|
* 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");
|