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// SPDX-License-Identifier: GPL-2.0-only
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/*
* linux / drivers / pcmcia / pxa2xx_vpac270 . c
*
* Driver for Voipac PXA270 PCMCIA and CF sockets
*
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* Copyright ( C ) 2010 - 2011 Marek Vasut < marek . vasut @ gmail . com >
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*/
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# include <linux/gpio.h>
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# include <linux/module.h>
# include <linux/platform_device.h>
# include <asm/mach-types.h>
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# include "vpac270.h"
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# include <pcmcia/soc_common.h>
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static struct gpio vpac270_pcmcia_gpios [ ] = {
{ GPIO107_VPAC270_PCMCIA_PPEN , GPIOF_INIT_LOW , " PCMCIA PPEN " } ,
{ GPIO11_VPAC270_PCMCIA_RESET , GPIOF_INIT_LOW , " PCMCIA Reset " } ,
} ;
static struct gpio vpac270_cf_gpios [ ] = {
{ GPIO16_VPAC270_CF_RESET , GPIOF_INIT_LOW , " CF Reset " } ,
} ;
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static int vpac270_pcmcia_hw_init ( struct soc_pcmcia_socket * skt )
{
int ret ;
if ( skt - > nr = = 0 ) {
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ret = gpio_request_array ( vpac270_pcmcia_gpios ,
ARRAY_SIZE ( vpac270_pcmcia_gpios ) ) ;
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skt - > stat [ SOC_STAT_CD ] . gpio = GPIO84_VPAC270_PCMCIA_CD ;
skt - > stat [ SOC_STAT_CD ] . name = " PCMCIA CD " ;
skt - > stat [ SOC_STAT_RDY ] . gpio = GPIO35_VPAC270_PCMCIA_RDY ;
skt - > stat [ SOC_STAT_RDY ] . name = " PCMCIA Ready " ;
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} else {
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ret = gpio_request_array ( vpac270_cf_gpios ,
ARRAY_SIZE ( vpac270_cf_gpios ) ) ;
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skt - > stat [ SOC_STAT_CD ] . gpio = GPIO17_VPAC270_CF_CD ;
skt - > stat [ SOC_STAT_CD ] . name = " CF CD " ;
skt - > stat [ SOC_STAT_RDY ] . gpio = GPIO12_VPAC270_CF_RDY ;
skt - > stat [ SOC_STAT_RDY ] . name = " CF Ready " ;
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}
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return ret ;
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}
static void vpac270_pcmcia_hw_shutdown ( struct soc_pcmcia_socket * skt )
{
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if ( skt - > nr = = 0 )
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gpio_free_array ( vpac270_pcmcia_gpios ,
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ARRAY_SIZE ( vpac270_pcmcia_gpios ) ) ;
else
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gpio_free_array ( vpac270_cf_gpios ,
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ARRAY_SIZE ( vpac270_cf_gpios ) ) ;
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}
static void vpac270_pcmcia_socket_state ( struct soc_pcmcia_socket * skt ,
struct pcmcia_state * state )
{
state - > vs_3v = 1 ;
state - > vs_Xv = 0 ;
}
static int
vpac270_pcmcia_configure_socket ( struct soc_pcmcia_socket * skt ,
const socket_state_t * state )
{
if ( skt - > nr = = 0 ) {
gpio_set_value ( GPIO11_VPAC270_PCMCIA_RESET ,
( state - > flags & SS_RESET ) ) ;
gpio_set_value ( GPIO107_VPAC270_PCMCIA_PPEN ,
! ( state - > Vcc = = 33 | | state - > Vcc = = 50 ) ) ;
} else {
gpio_set_value ( GPIO16_VPAC270_CF_RESET ,
( state - > flags & SS_RESET ) ) ;
}
return 0 ;
}
static struct pcmcia_low_level vpac270_pcmcia_ops = {
. owner = THIS_MODULE ,
. first = 0 ,
. nr = 2 ,
. hw_init = vpac270_pcmcia_hw_init ,
. hw_shutdown = vpac270_pcmcia_hw_shutdown ,
. socket_state = vpac270_pcmcia_socket_state ,
. configure_socket = vpac270_pcmcia_configure_socket ,
} ;
static struct platform_device * vpac270_pcmcia_device ;
static int __init vpac270_pcmcia_init ( void )
{
int ret ;
if ( ! machine_is_vpac270 ( ) )
return - ENODEV ;
vpac270_pcmcia_device = platform_device_alloc ( " pxa2xx-pcmcia " , - 1 ) ;
if ( ! vpac270_pcmcia_device )
return - ENOMEM ;
ret = platform_device_add_data ( vpac270_pcmcia_device ,
& vpac270_pcmcia_ops , sizeof ( vpac270_pcmcia_ops ) ) ;
if ( ! ret )
ret = platform_device_add ( vpac270_pcmcia_device ) ;
if ( ret )
platform_device_put ( vpac270_pcmcia_device ) ;
return ret ;
}
static void __exit vpac270_pcmcia_exit ( void )
{
platform_device_unregister ( vpac270_pcmcia_device ) ;
}
module_init ( vpac270_pcmcia_init ) ;
module_exit ( vpac270_pcmcia_exit ) ;
MODULE_AUTHOR ( " Marek Vasut <marek.vasut@gmail.com> " ) ;
MODULE_DESCRIPTION ( " PCMCIA support for Voipac PXA270 " ) ;
MODULE_ALIAS ( " platform:pxa2xx-pcmcia " ) ;
MODULE_LICENSE ( " GPL " ) ;