mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-20 02:34:23 +08:00
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>
123 lines
3.0 KiB
C
123 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* linux/drivers/pcmcia/pxa2xx_mainstone.c
|
|
*
|
|
* Mainstone PCMCIA specific routines.
|
|
*
|
|
* Created: May 12, 2004
|
|
* Author: Nicolas Pitre
|
|
* Copyright: MontaVista Software Inc.
|
|
*/
|
|
#include <linux/gpio/consumer.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <pcmcia/ss.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
|
|
#include "soc_common.h"
|
|
#include "max1600.h"
|
|
|
|
static int mst_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
struct device *dev = skt->socket.dev.parent;
|
|
struct max1600 *m;
|
|
int ret;
|
|
|
|
skt->stat[SOC_STAT_CD].name = skt->nr ? "bdetect" : "adetect";
|
|
skt->stat[SOC_STAT_BVD1].name = skt->nr ? "bbvd1" : "abvd1";
|
|
skt->stat[SOC_STAT_BVD2].name = skt->nr ? "bbvd2" : "abvd2";
|
|
skt->stat[SOC_STAT_RDY].name = skt->nr ? "bready" : "aready";
|
|
skt->stat[SOC_STAT_VS1].name = skt->nr ? "bvs1" : "avs1";
|
|
skt->stat[SOC_STAT_VS2].name = skt->nr ? "bvs2" : "avs2";
|
|
|
|
skt->gpio_reset = devm_gpiod_get(dev, skt->nr ? "breset" : "areset",
|
|
GPIOD_OUT_HIGH);
|
|
if (IS_ERR(skt->gpio_reset))
|
|
return PTR_ERR(skt->gpio_reset);
|
|
|
|
ret = max1600_init(dev, &m, skt->nr ? MAX1600_CHAN_B : MAX1600_CHAN_A,
|
|
MAX1600_CODE_HIGH);
|
|
if (ret)
|
|
return ret;
|
|
|
|
skt->driver_data = m;
|
|
|
|
return soc_pcmcia_request_gpiods(skt);
|
|
}
|
|
|
|
static unsigned int mst_pcmcia_bvd1_status[2];
|
|
|
|
static void mst_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
|
|
struct pcmcia_state *state)
|
|
{
|
|
unsigned int flip = mst_pcmcia_bvd1_status[skt->nr] ^ state->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_bvd1_status[skt->nr] = state->bvd1;
|
|
if (state->bvd1)
|
|
enable_irq(skt->stat[SOC_STAT_BVD1].irq);
|
|
else
|
|
disable_irq(skt->stat[SOC_STAT_BVD2].irq);
|
|
}
|
|
}
|
|
|
|
static int mst_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
|
|
const socket_state_t *state)
|
|
{
|
|
return max1600_configure(skt->driver_data, state->Vcc, state->Vpp);
|
|
}
|
|
|
|
static struct pcmcia_low_level mst_pcmcia_ops __initdata = {
|
|
.owner = THIS_MODULE,
|
|
.hw_init = mst_pcmcia_hw_init,
|
|
.socket_state = mst_pcmcia_socket_state,
|
|
.configure_socket = mst_pcmcia_configure_socket,
|
|
.nr = 2,
|
|
};
|
|
|
|
static struct platform_device *mst_pcmcia_device;
|
|
|
|
static int __init mst_pcmcia_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!machine_is_mainstone())
|
|
return -ENODEV;
|
|
|
|
mst_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
|
|
if (!mst_pcmcia_device)
|
|
return -ENOMEM;
|
|
|
|
ret = platform_device_add_data(mst_pcmcia_device, &mst_pcmcia_ops,
|
|
sizeof(mst_pcmcia_ops));
|
|
if (ret == 0)
|
|
ret = platform_device_add(mst_pcmcia_device);
|
|
|
|
if (ret)
|
|
platform_device_put(mst_pcmcia_device);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit mst_pcmcia_exit(void)
|
|
{
|
|
platform_device_unregister(mst_pcmcia_device);
|
|
}
|
|
|
|
fs_initcall(mst_pcmcia_init);
|
|
module_exit(mst_pcmcia_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:pxa2xx-pcmcia");
|