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/*
* linux / drivers / pcmcia / pxa / pxa_cm_x255 . 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 , 2008
* Mike Rapoport < mike @ compulab . co . il >
*
*/
# include <linux/platform_device.h>
# include <linux/irq.h>
# include <linux/delay.h>
# include <linux/gpio.h>
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# include <linux/export.h>
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# include "soc_common.h"
# define GPIO_PCMCIA_SKTSEL (54)
# define GPIO_PCMCIA_S0_CD_VALID (16)
# define GPIO_PCMCIA_S1_CD_VALID (17)
# define GPIO_PCMCIA_S0_RDYINT (6)
# define GPIO_PCMCIA_S1_RDYINT (8)
# define GPIO_PCMCIA_RESET (9)
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# define PCMCIA_S0_CD_VALID gpio_to_irq(GPIO_PCMCIA_S0_CD_VALID)
# define PCMCIA_S1_CD_VALID gpio_to_irq(GPIO_PCMCIA_S1_CD_VALID)
# define PCMCIA_S0_RDYINT gpio_to_irq(GPIO_PCMCIA_S0_RDYINT)
# define PCMCIA_S1_RDYINT gpio_to_irq(GPIO_PCMCIA_S1_RDYINT)
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static struct pcmcia_irqs irqs [ ] = {
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{ . sock = 0 , . str = " PCMCIA0 CD " } ,
{ . sock = 1 , . str = " PCMCIA1 CD " } ,
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} ;
static int cmx255_pcmcia_hw_init ( struct soc_pcmcia_socket * skt )
{
int ret = gpio_request ( GPIO_PCMCIA_RESET , " PCCard reset " ) ;
if ( ret )
return ret ;
gpio_direction_output ( GPIO_PCMCIA_RESET , 0 ) ;
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skt - > socket . pci_irq = skt - > nr = = 0 ? PCMCIA_S0_RDYINT : PCMCIA_S1_RDYINT ;
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irqs [ 0 ] . irq = PCMCIA_S0_CD_VALID ;
irqs [ 1 ] . irq = PCMCIA_S1_CD_VALID ;
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ret = soc_pcmcia_request_irqs ( skt , irqs , ARRAY_SIZE ( irqs ) ) ;
if ( ! ret )
gpio_free ( GPIO_PCMCIA_RESET ) ;
return ret ;
}
static void cmx255_pcmcia_shutdown ( struct soc_pcmcia_socket * skt )
{
soc_pcmcia_free_irqs ( skt , irqs , ARRAY_SIZE ( irqs ) ) ;
gpio_free ( GPIO_PCMCIA_RESET ) ;
}
static void cmx255_pcmcia_socket_state ( struct soc_pcmcia_socket * skt ,
struct pcmcia_state * state )
{
int cd = skt - > nr ? GPIO_PCMCIA_S1_CD_VALID : GPIO_PCMCIA_S0_CD_VALID ;
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int rdy = skt - > nr ? GPIO_PCMCIA_S1_RDYINT : GPIO_PCMCIA_S0_RDYINT ;
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state - > detect = ! gpio_get_value ( cd ) ;
state - > ready = ! ! gpio_get_value ( rdy ) ;
state - > bvd1 = 1 ;
state - > bvd2 = 1 ;
state - > vs_3v = 0 ;
state - > vs_Xv = 0 ;
state - > wrprot = 0 ; /* not available */
}
static int cmx255_pcmcia_configure_socket ( struct soc_pcmcia_socket * skt ,
const socket_state_t * state )
{
switch ( skt - > nr ) {
case 0 :
if ( state - > flags & SS_RESET ) {
gpio_set_value ( GPIO_PCMCIA_SKTSEL , 0 ) ;
udelay ( 1 ) ;
gpio_set_value ( GPIO_PCMCIA_RESET , 1 ) ;
udelay ( 10 ) ;
gpio_set_value ( GPIO_PCMCIA_RESET , 0 ) ;
}
break ;
case 1 :
if ( state - > flags & SS_RESET ) {
gpio_set_value ( GPIO_PCMCIA_SKTSEL , 1 ) ;
udelay ( 1 ) ;
gpio_set_value ( GPIO_PCMCIA_RESET , 1 ) ;
udelay ( 10 ) ;
gpio_set_value ( GPIO_PCMCIA_RESET , 0 ) ;
}
break ;
}
return 0 ;
}
static struct pcmcia_low_level cmx255_pcmcia_ops __initdata = {
. owner = THIS_MODULE ,
. hw_init = cmx255_pcmcia_hw_init ,
. hw_shutdown = cmx255_pcmcia_shutdown ,
. socket_state = cmx255_pcmcia_socket_state ,
. configure_socket = cmx255_pcmcia_configure_socket ,
. nr = 1 ,
} ;
static struct platform_device * cmx255_pcmcia_device ;
int __init cmx255_pcmcia_init ( void )
{
int ret ;
cmx255_pcmcia_device = platform_device_alloc ( " pxa2xx-pcmcia " , - 1 ) ;
if ( ! cmx255_pcmcia_device )
return - ENOMEM ;
ret = platform_device_add_data ( cmx255_pcmcia_device , & cmx255_pcmcia_ops ,
sizeof ( cmx255_pcmcia_ops ) ) ;
if ( ret = = 0 ) {
printk ( KERN_INFO " Registering cm-x255 PCMCIA interface. \n " ) ;
ret = platform_device_add ( cmx255_pcmcia_device ) ;
}
if ( ret )
platform_device_put ( cmx255_pcmcia_device ) ;
return ret ;
}
void __exit cmx255_pcmcia_exit ( void )
{
platform_device_unregister ( cmx255_pcmcia_device ) ;
}