d2912cb15b
Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
138 lines
3.2 KiB
C
138 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* linux/drivers/pcmcia/pxa2xx_stargate2.c
|
|
*
|
|
* Stargate 2 PCMCIA specific routines.
|
|
*
|
|
* Created: December 6, 2005
|
|
* Author: Ed C. Epp
|
|
* Copyright: Intel Corp 2005
|
|
* Jonathan Cameron <jic23@cam.ac.uk> 2009
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/gpio.h>
|
|
|
|
#include <pcmcia/ss.h>
|
|
|
|
#include <asm/irq.h>
|
|
#include <asm/mach-types.h>
|
|
|
|
#include "soc_common.h"
|
|
|
|
#define SG2_S0_POWER_CTL 108
|
|
#define SG2_S0_GPIO_RESET 82
|
|
#define SG2_S0_GPIO_DETECT 53
|
|
#define SG2_S0_GPIO_READY 81
|
|
|
|
static struct gpio sg2_pcmcia_gpios[] = {
|
|
{ SG2_S0_GPIO_RESET, GPIOF_OUT_INIT_HIGH, "PCMCIA Reset" },
|
|
{ SG2_S0_POWER_CTL, GPIOF_OUT_INIT_HIGH, "PCMCIA Power Ctrl" },
|
|
};
|
|
|
|
static int sg2_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
skt->stat[SOC_STAT_CD].gpio = SG2_S0_GPIO_DETECT;
|
|
skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
|
|
skt->stat[SOC_STAT_RDY].gpio = SG2_S0_GPIO_READY;
|
|
skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";
|
|
return 0;
|
|
}
|
|
|
|
static void sg2_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
|
|
struct pcmcia_state *state)
|
|
{
|
|
state->bvd1 = 0; /* not available - battery detect on card */
|
|
state->bvd2 = 0; /* not available */
|
|
state->vs_3v = 1; /* not available - voltage detect for card */
|
|
state->vs_Xv = 0; /* not available */
|
|
}
|
|
|
|
static int sg2_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
|
|
const socket_state_t *state)
|
|
{
|
|
/* Enable card power */
|
|
switch (state->Vcc) {
|
|
case 0:
|
|
/* sets power ctl register high */
|
|
gpio_set_value(SG2_S0_POWER_CTL, 1);
|
|
break;
|
|
case 33:
|
|
case 50:
|
|
/* sets power control register low (clear) */
|
|
gpio_set_value(SG2_S0_POWER_CTL, 0);
|
|
msleep(100);
|
|
break;
|
|
default:
|
|
pr_err("%s(): bad Vcc %u\n",
|
|
__func__, state->Vcc);
|
|
return -1;
|
|
}
|
|
|
|
/* reset */
|
|
gpio_set_value(SG2_S0_GPIO_RESET, !!(state->flags & SS_RESET));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct pcmcia_low_level sg2_pcmcia_ops __initdata = {
|
|
.owner = THIS_MODULE,
|
|
.hw_init = sg2_pcmcia_hw_init,
|
|
.socket_state = sg2_pcmcia_socket_state,
|
|
.configure_socket = sg2_pcmcia_configure_socket,
|
|
.nr = 1,
|
|
};
|
|
|
|
static struct platform_device *sg2_pcmcia_device;
|
|
|
|
static int __init sg2_pcmcia_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!machine_is_stargate2())
|
|
return -ENODEV;
|
|
|
|
sg2_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
|
|
if (!sg2_pcmcia_device)
|
|
return -ENOMEM;
|
|
|
|
ret = gpio_request_array(sg2_pcmcia_gpios, ARRAY_SIZE(sg2_pcmcia_gpios));
|
|
if (ret)
|
|
goto error_put_platform_device;
|
|
|
|
ret = platform_device_add_data(sg2_pcmcia_device,
|
|
&sg2_pcmcia_ops,
|
|
sizeof(sg2_pcmcia_ops));
|
|
if (ret)
|
|
goto error_free_gpios;
|
|
|
|
ret = platform_device_add(sg2_pcmcia_device);
|
|
if (ret)
|
|
goto error_free_gpios;
|
|
|
|
return 0;
|
|
error_free_gpios:
|
|
gpio_free_array(sg2_pcmcia_gpios, ARRAY_SIZE(sg2_pcmcia_gpios));
|
|
error_put_platform_device:
|
|
platform_device_put(sg2_pcmcia_device);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit sg2_pcmcia_exit(void)
|
|
{
|
|
platform_device_unregister(sg2_pcmcia_device);
|
|
gpio_free_array(sg2_pcmcia_gpios, ARRAY_SIZE(sg2_pcmcia_gpios));
|
|
}
|
|
|
|
fs_initcall(sg2_pcmcia_init);
|
|
module_exit(sg2_pcmcia_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:pxa2xx-pcmcia");
|