![Dominik Brodowski](/assets/img/avatar_default.png)
Convert users of kmalloc and memset to kzalloc Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
202 lines
5.1 KiB
C
202 lines
5.1 KiB
C
/*
|
|
* linux/drivers/pcmcia/pxa2xx_mainstone.c
|
|
*
|
|
* Mainstone PCMCIA specific routines.
|
|
*
|
|
* Created: May 12, 2004
|
|
* Author: Nicolas Pitre
|
|
* Copyright: MontaVista Software Inc.
|
|
*
|
|
* 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/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <pcmcia/ss.h>
|
|
|
|
#include <asm/hardware.h>
|
|
#include <asm/irq.h>
|
|
|
|
#include <asm/arch/pxa-regs.h>
|
|
#include <asm/arch/mainstone.h>
|
|
|
|
#include "soc_common.h"
|
|
|
|
|
|
static struct pcmcia_irqs irqs[] = {
|
|
{ 0, MAINSTONE_S0_CD_IRQ, "PCMCIA0 CD" },
|
|
{ 1, MAINSTONE_S1_CD_IRQ, "PCMCIA1 CD" },
|
|
{ 0, MAINSTONE_S0_STSCHG_IRQ, "PCMCIA0 STSCHG" },
|
|
{ 1, MAINSTONE_S1_STSCHG_IRQ, "PCMCIA1 STSCHG" },
|
|
};
|
|
|
|
static int mst_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
/*
|
|
* Setup default state of GPIO outputs
|
|
* before we enable them as outputs.
|
|
*/
|
|
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(GPIO79_pSKTSEL_MD);
|
|
pxa_gpio_mode(GPIO55_nPREG_MD);
|
|
pxa_gpio_mode(GPIO56_nPWAIT_MD);
|
|
pxa_gpio_mode(GPIO57_nIOIS16_MD);
|
|
|
|
skt->irq = (skt->nr == 0) ? MAINSTONE_S0_IRQ : MAINSTONE_S1_IRQ;
|
|
return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
|
|
}
|
|
|
|
static void mst_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
|
|
{
|
|
soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
|
|
}
|
|
|
|
static unsigned long mst_pcmcia_status[2];
|
|
|
|
static void mst_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
|
|
struct pcmcia_state *state)
|
|
{
|
|
unsigned long status, flip;
|
|
|
|
status = (skt->nr == 0) ? MST_PCMCIA0 : MST_PCMCIA1;
|
|
flip = (status ^ mst_pcmcia_status[skt->nr]) & MST_PCMCIA_nSTSCHG_BVD1;
|
|
|
|
/*
|
|
* Workaround for STSCHG which can't be deasserted:
|
|
* We therefore disable/enable corresponding IRQs
|
|
* as needed to avoid IRQ locks.
|
|
*/
|
|
if (flip) {
|
|
mst_pcmcia_status[skt->nr] = status;
|
|
if (status & MST_PCMCIA_nSTSCHG_BVD1)
|
|
enable_irq( (skt->nr == 0) ? MAINSTONE_S0_STSCHG_IRQ
|
|
: MAINSTONE_S1_STSCHG_IRQ );
|
|
else
|
|
disable_irq( (skt->nr == 0) ? MAINSTONE_S0_STSCHG_IRQ
|
|
: MAINSTONE_S1_STSCHG_IRQ );
|
|
}
|
|
|
|
state->detect = (status & MST_PCMCIA_nCD) ? 0 : 1;
|
|
state->ready = (status & MST_PCMCIA_nIRQ) ? 1 : 0;
|
|
state->bvd1 = (status & MST_PCMCIA_nSTSCHG_BVD1) ? 1 : 0;
|
|
state->bvd2 = (status & MST_PCMCIA_nSPKR_BVD2) ? 1 : 0;
|
|
state->vs_3v = (status & MST_PCMCIA_nVS1) ? 0 : 1;
|
|
state->vs_Xv = (status & MST_PCMCIA_nVS2) ? 0 : 1;
|
|
state->wrprot = 0; /* not available */
|
|
}
|
|
|
|
static int mst_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
|
|
const socket_state_t *state)
|
|
{
|
|
unsigned long power = 0;
|
|
int ret = 0;
|
|
|
|
switch (state->Vcc) {
|
|
case 0: power |= MST_PCMCIA_PWR_VCC_0; break;
|
|
case 33: power |= MST_PCMCIA_PWR_VCC_33; break;
|
|
case 50: power |= MST_PCMCIA_PWR_VCC_50; break;
|
|
default:
|
|
printk(KERN_ERR "%s(): bad Vcc %u\n",
|
|
__FUNCTION__, state->Vcc);
|
|
ret = -1;
|
|
}
|
|
|
|
switch (state->Vpp) {
|
|
case 0: power |= MST_PCMCIA_PWR_VPP_0; break;
|
|
case 120: power |= MST_PCMCIA_PWR_VPP_120; break;
|
|
default:
|
|
if(state->Vpp == state->Vcc) {
|
|
power |= MST_PCMCIA_PWR_VPP_VCC;
|
|
} else {
|
|
printk(KERN_ERR "%s(): bad Vpp %u\n",
|
|
__FUNCTION__, state->Vpp);
|
|
ret = -1;
|
|
}
|
|
}
|
|
|
|
if (state->flags & SS_RESET)
|
|
power |= MST_PCMCIA_RESET;
|
|
|
|
switch (skt->nr) {
|
|
case 0: MST_PCMCIA0 = power; break;
|
|
case 1: MST_PCMCIA1 = power; break;
|
|
default: ret = -1;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void mst_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
}
|
|
|
|
static void mst_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
|
|
{
|
|
}
|
|
|
|
static struct pcmcia_low_level mst_pcmcia_ops = {
|
|
.owner = THIS_MODULE,
|
|
.hw_init = mst_pcmcia_hw_init,
|
|
.hw_shutdown = mst_pcmcia_hw_shutdown,
|
|
.socket_state = mst_pcmcia_socket_state,
|
|
.configure_socket = mst_pcmcia_configure_socket,
|
|
.socket_init = mst_pcmcia_socket_init,
|
|
.socket_suspend = mst_pcmcia_socket_suspend,
|
|
.nr = 2,
|
|
};
|
|
|
|
static struct platform_device *mst_pcmcia_device;
|
|
|
|
static int __init mst_pcmcia_init(void)
|
|
{
|
|
int ret;
|
|
|
|
mst_pcmcia_device = kzalloc(sizeof(*mst_pcmcia_device), GFP_KERNEL);
|
|
if (!mst_pcmcia_device)
|
|
return -ENOMEM;
|
|
mst_pcmcia_device->name = "pxa2xx-pcmcia";
|
|
mst_pcmcia_device->dev.platform_data = &mst_pcmcia_ops;
|
|
|
|
ret = platform_device_register(mst_pcmcia_device);
|
|
if (ret)
|
|
kfree(mst_pcmcia_device);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit mst_pcmcia_exit(void)
|
|
{
|
|
/*
|
|
* This call is supposed to free our mst_pcmcia_device.
|
|
* Unfortunately platform_device don't have a free method, and
|
|
* we can't assume it's free of any reference at this point so we
|
|
* can't free it either.
|
|
*/
|
|
platform_device_unregister(mst_pcmcia_device);
|
|
}
|
|
|
|
fs_initcall(mst_pcmcia_init);
|
|
module_exit(mst_pcmcia_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|