Commit 0273b4ef authored by Manuel Lauss's avatar Manuel Lauss Committed by Ralf Baechle

MIPS: Alchemy: XXS1500 PCMCIA driver rewrite

Rewritten XXS1500 PCMCIA socket driver, standalone (doesn't depend on
au1000_generic.c) and added carddetect IRQ support.
Signed-off-by: default avatarManuel Lauss <manuel.lauss@gmail.com>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Linux-PCMCIA <linux-pcmcia@lists.infradead.org>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 27dd65ac
......@@ -5,4 +5,4 @@
# Makefile for MyCable XXS1500 board.
#
lib-y := init.o board_setup.o
lib-y := init.o board_setup.o platform.o
......@@ -69,22 +69,6 @@ void __init board_setup(void)
/* Enable DTR = USB power up */
au_writel(0x01, UART3_ADDR + UART_MCR); /* UART_MCR_DTR is 0x01??? */
#ifdef CONFIG_PCMCIA_XXS1500
/* GPIO 0, 1, and 4 are inputs */
alchemy_gpio_direction_input(0);
alchemy_gpio_direction_input(1);
alchemy_gpio_direction_input(4);
/* GPIO2 208/9/10/11 are inputs */
alchemy_gpio_direction_input(208);
alchemy_gpio_direction_input(209);
alchemy_gpio_direction_input(210);
alchemy_gpio_direction_input(211);
/* Turn off power */
alchemy_gpio_direction_output(214, 0);
#endif
#ifdef CONFIG_PCI
#if defined(__MIPSEB__)
au_writel(0xf | (2 << 6) | (1 << 4), Au1500_PCI_CFG);
......
/*
* XXS1500 board platform device registration
*
* Copyright (C) 2009 Manuel Lauss
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/init.h>
#include <linux/platform_device.h>
#include <asm/mach-au1x00/au1000.h>
static struct resource xxs1500_pcmcia_res[] = {
{
.name = "pseudo-io",
.flags = IORESOURCE_MEM,
.start = PCMCIA_IO_PSEUDO_PHYS,
.end = PCMCIA_IO_PSEUDO_PHYS + 0x00040000 - 1,
},
{
.name = "pseudo-attr",
.flags = IORESOURCE_MEM,
.start = PCMCIA_ATTR_PSEUDO_PHYS,
.end = PCMCIA_ATTR_PSEUDO_PHYS + 0x00040000 - 1,
},
{
.name = "pseudo-mem",
.flags = IORESOURCE_MEM,
.start = PCMCIA_IO_PSEUDO_PHYS,
.end = PCMCIA_IO_PSEUDO_PHYS + 0x00040000 - 1,
},
};
static struct platform_device xxs1500_pcmcia_dev = {
.name = "xxs1500_pcmcia",
.id = -1,
.num_resources = ARRAY_SIZE(xxs1500_pcmcia_res),
.resource = xxs1500_pcmcia_res,
};
static struct platform_device *xxs1500_devs[] __initdata = {
&xxs1500_pcmcia_dev,
};
static int __init xxs1500_dev_init(void)
{
return platform_add_devices(xxs1500_devs,
ARRAY_SIZE(xxs1500_devs));
}
device_initcall(xxs1500_dev_init);
......@@ -185,6 +185,16 @@ config PCMCIA_ALCHEMY_DEVBOARD
This driver is also available as a module called db1xxx_ss.ko
config PCMCIA_XXS1500
tristate "MyCable XXS1500 PCMCIA socket support"
depends on PCMCIA && MIPS_XXS1500
select 64BIT_PHYS_ADDR
help
Support for the PCMCIA/CF socket interface on MyCable XXS1500
systems.
This driver is also available as a module called xxs1500_ss.ko
config PCMCIA_BCM63XX
tristate "bcm63xx pcmcia support"
depends on BCM63XX && PCMCIA
......
......@@ -39,7 +39,6 @@ obj-$(CONFIG_PCMCIA_ALCHEMY_DEVBOARD) += db1xxx_ss.o
au1x00_ss-y += au1000_generic.o
au1x00_ss-$(CONFIG_MIPS_PB1000) += au1000_pb1x00.o
au1x00_ss-$(CONFIG_MIPS_XXS1500) += au1000_xxs1500.o
sa1111_cs-y += sa1111_generic.o
sa1111_cs-$(CONFIG_ASSABET_NEPONSET) += sa1100_neponset.o
......@@ -69,3 +68,5 @@ pxa2xx-obj-$(CONFIG_MACH_E740) += pxa2xx_e740.o
pxa2xx-obj-$(CONFIG_MACH_STARGATE2) += pxa2xx_stargate2.o
obj-$(CONFIG_PCMCIA_PXA2XX) += pxa2xx_base.o $(pxa2xx-obj-y)
obj-$(CONFIG_PCMCIA_XXS1500) += xxs1500_ss.o
/*
*
* MyCable board specific pcmcia routines.
*
* Copyright 2003 MontaVista Software Inc.
* Author: Pete Popov, MontaVista Software, Inc.
* ppopov@mvista.com or source@mvista.com
*
* ########################################################################
*
* This program is free software; you can distribute 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 distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* ########################################################################
*
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/proc_fs.h>
#include <linux/types.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/ss.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/bus_ops.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/system.h>
#include <asm/au1000.h>
#include <asm/au1000_pcmcia.h>
#define PCMCIA_MAX_SOCK 0
#define PCMCIA_NUM_SOCKS (PCMCIA_MAX_SOCK + 1)
#define PCMCIA_IRQ AU1000_GPIO_4
#if 0
#define DEBUG(x, args...) printk(__func__ ": " x, ##args)
#else
#define DEBUG(x,args...)
#endif
static int xxs1500_pcmcia_init(struct pcmcia_init *init)
{
return PCMCIA_NUM_SOCKS;
}
static int xxs1500_pcmcia_shutdown(void)
{
/* turn off power */
au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30),
GPIO2_OUTPUT);
au_sync_delay(100);
/* assert reset */
au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20),
GPIO2_OUTPUT);
au_sync_delay(100);
return 0;
}
static int
xxs1500_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state)
{
u32 inserted; u32 vs;
unsigned long gpio, gpio2;
if(sock > PCMCIA_MAX_SOCK) return -1;
gpio = au_readl(SYS_PINSTATERD);
gpio2 = au_readl(GPIO2_PINSTATE);
vs = gpio2 & ((1<<8) | (1<<9));
inserted = (!(gpio & 0x1) && !(gpio & 0x2));
state->ready = 0;
state->vs_Xv = 0;
state->vs_3v = 0;
state->detect = 0;
if (inserted) {
switch (vs) {
case 0:
case 1:
case 2:
state->vs_3v=1;
break;
case 3: /* 5V */
default:
/* return without setting 'detect' */
printk(KERN_ERR "au1x00_cs: unsupported VS\n",
vs);
return;
}
state->detect = 1;
}
if (state->detect) {
state->ready = 1;
}
state->bvd1= gpio2 & (1<<10);
state->bvd2 = gpio2 & (1<<11);
state->wrprot=0;
return 1;
}
static int xxs1500_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
{
if(info->sock > PCMCIA_MAX_SOCK) return -1;
info->irq = PCMCIA_IRQ;
return 0;
}
static int
xxs1500_pcmcia_configure_socket(const struct pcmcia_configure *configure)
{
if(configure->sock > PCMCIA_MAX_SOCK) return -1;
DEBUG("Vcc %dV Vpp %dV, reset %d\n",
configure->vcc, configure->vpp, configure->reset);
switch(configure->vcc){
case 33: /* Vcc 3.3V */
/* turn on power */
DEBUG("turn on power\n");
au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<14))|(1<<30),
GPIO2_OUTPUT);
au_sync_delay(100);
break;
case 50: /* Vcc 5V */
default: /* what's this ? */
printk(KERN_ERR "au1x00_cs: unsupported VCC\n");
case 0: /* Vcc 0 */
/* turn off power */
au_sync_delay(100);
au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30),
GPIO2_OUTPUT);
break;
}
if (!configure->reset) {
DEBUG("deassert reset\n");
au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<4))|(1<<20),
GPIO2_OUTPUT);
au_sync_delay(100);
au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<5))|(1<<21),
GPIO2_OUTPUT);
}
else {
DEBUG("assert reset\n");
au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20),
GPIO2_OUTPUT);
}
au_sync_delay(100);
return 0;
}
struct pcmcia_low_level xxs1500_pcmcia_ops = {
xxs1500_pcmcia_init,
xxs1500_pcmcia_shutdown,
xxs1500_pcmcia_socket_state,
xxs1500_pcmcia_get_irq_info,
xxs1500_pcmcia_configure_socket
};
/*
* PCMCIA socket code for the MyCable XXS1500 system.
*
* Copyright (c) 2009 Manuel Lauss <manuel.lauss@gmail.com>
*
*/
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/mm.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/resource.h>
#include <linux/spinlock.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/ss.h>
#include <pcmcia/cistpl.h>
#include <asm/irq.h>
#include <asm/system.h>
#include <asm/mach-au1x00/au1000.h>
#define MEM_MAP_SIZE 0x400000
#define IO_MAP_SIZE 0x1000
/*
* 3.3V cards only; all interfacing is done via gpios:
*
* 0/1: carddetect (00 = card present, xx = huh)
* 4: card irq
* 204: reset (high-act)
* 205: buffer enable (low-act)
* 208/209: card voltage key (00,01,10,11)
* 210: battwarn
* 211: batdead
* 214: power (low-act)
*/
#define GPIO_CDA 0
#define GPIO_CDB 1
#define GPIO_CARDIRQ 4
#define GPIO_RESET 204
#define GPIO_OUTEN 205
#define GPIO_VSL 208
#define GPIO_VSH 209
#define GPIO_BATTDEAD 210
#define GPIO_BATTWARN 211
#define GPIO_POWER 214
struct xxs1500_pcmcia_sock {
struct pcmcia_socket socket;
void *virt_io;
/* the "pseudo" addresses of the PCMCIA space. */
unsigned long phys_io;
unsigned long phys_attr;
unsigned long phys_mem;
/* previous flags for set_socket() */
unsigned int old_flags;
};
#define to_xxs_socket(x) container_of(x, struct xxs1500_pcmcia_sock, socket)
static irqreturn_t cdirq(int irq, void *data)
{
struct xxs1500_pcmcia_sock *sock = data;
pcmcia_parse_events(&sock->socket, SS_DETECT);
return IRQ_HANDLED;
}
static int xxs1500_pcmcia_configure(struct pcmcia_socket *skt,
struct socket_state_t *state)
{
struct xxs1500_pcmcia_sock *sock = to_xxs_socket(skt);
unsigned int changed;
/* power control */
switch (state->Vcc) {
case 0:
gpio_set_value(GPIO_POWER, 1); /* power off */
break;
case 33:
gpio_set_value(GPIO_POWER, 0); /* power on */
break;
case 50:
default:
return -EINVAL;
}
changed = state->flags ^ sock->old_flags;
if (changed & SS_RESET) {
if (state->flags & SS_RESET) {
gpio_set_value(GPIO_RESET, 1); /* assert reset */
gpio_set_value(GPIO_OUTEN, 1); /* buffers off */
} else {
gpio_set_value(GPIO_RESET, 0); /* deassert reset */
gpio_set_value(GPIO_OUTEN, 0); /* buffers on */
msleep(500);
}
}
sock->old_flags = state->flags;
return 0;
}
static int xxs1500_pcmcia_get_status(struct pcmcia_socket *skt,
unsigned int *value)
{
unsigned int status;
int i;
status = 0;
/* check carddetects: GPIO[0:1] must both be low */
if (!gpio_get_value(GPIO_CDA) && !gpio_get_value(GPIO_CDB))
status |= SS_DETECT;
/* determine card voltage: GPIO[208:209] binary value */
i = (!!gpio_get_value(GPIO_VSL)) | ((!!gpio_get_value(GPIO_VSH)) << 1);
switch (i) {
case 0:
case 1:
case 2:
status |= SS_3VCARD; /* 3V card */
break;
case 3: /* 5V card, unsupported */
default:
status |= SS_XVCARD; /* treated as unsupported in core */
}
/* GPIO214: low active power switch */
status |= gpio_get_value(GPIO_POWER) ? 0 : SS_POWERON;
/* GPIO204: high-active reset line */
status |= gpio_get_value(GPIO_RESET) ? SS_RESET : SS_READY;
/* other stuff */
status |= gpio_get_value(GPIO_BATTDEAD) ? 0 : SS_BATDEAD;
status |= gpio_get_value(GPIO_BATTWARN) ? 0 : SS_BATWARN;
*value = status;
return 0;
}
static int xxs1500_pcmcia_sock_init(struct pcmcia_socket *skt)
{
gpio_direction_input(GPIO_CDA);
gpio_direction_input(GPIO_CDB);
gpio_direction_input(GPIO_VSL);
gpio_direction_input(GPIO_VSH);
gpio_direction_input(GPIO_BATTDEAD);
gpio_direction_input(GPIO_BATTWARN);
gpio_direction_output(GPIO_RESET, 1); /* assert reset */
gpio_direction_output(GPIO_OUTEN, 1); /* disable buffers */
gpio_direction_output(GPIO_POWER, 1); /* power off */
return 0;
}
static int xxs1500_pcmcia_sock_suspend(struct pcmcia_socket *skt)
{
return 0;
}
static int au1x00_pcmcia_set_io_map(struct pcmcia_socket *skt,
struct pccard_io_map *map)
{
struct xxs1500_pcmcia_sock *sock = to_xxs_socket(skt);
map->start = (u32)sock->virt_io;
map->stop = map->start + IO_MAP_SIZE;
return 0;
}
static int au1x00_pcmcia_set_mem_map(struct pcmcia_socket *skt,
struct pccard_mem_map *map)
{
struct xxs1500_pcmcia_sock *sock = to_xxs_socket(skt);
if (map->flags & MAP_ATTRIB)
map->static_start = sock->phys_attr + map->card_start;
else
map->static_start = sock->phys_mem + map->card_start;
return 0;
}
static struct pccard_operations xxs1500_pcmcia_operations = {
.init = xxs1500_pcmcia_sock_init,
.suspend = xxs1500_pcmcia_sock_suspend,
.get_status = xxs1500_pcmcia_get_status,
.set_socket = xxs1500_pcmcia_configure,
.set_io_map = au1x00_pcmcia_set_io_map,
.set_mem_map = au1x00_pcmcia_set_mem_map,
};
static int __devinit xxs1500_pcmcia_probe(struct platform_device *pdev)
{
struct xxs1500_pcmcia_sock *sock;
struct resource *r;
phys_t physio;
int ret, irq;
sock = kzalloc(sizeof(struct xxs1500_pcmcia_sock), GFP_KERNEL);
if (!sock)
return -ENOMEM;
ret = -ENODEV;
/*
* pseudo-attr: The 32bit address of the PCMCIA attribute space
* for this socket (usually the 36bit address shifted 4 to the
* right).
*/
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pseudo-attr");
if (!r) {
dev_err(&pdev->dev, "missing 'pseudo-attr' resource!\n");
goto out0;
}
sock->phys_attr = r->start;
/*
* pseudo-mem: The 32bit address of the PCMCIA memory space for
* this socket (usually the 36bit address shifted 4 to the right)
*/
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pseudo-mem");
if (!r) {
dev_err(&pdev->dev, "missing 'pseudo-mem' resource!\n");
goto out0;
}
sock->phys_mem = r->start;
/*
* pseudo-io: The 32bit address of the PCMCIA IO space for this
* socket (usually the 36bit address shifted 4 to the right).
*/
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pseudo-io");
if (!r) {
dev_err(&pdev->dev, "missing 'pseudo-io' resource!\n");
goto out0;
}
sock->phys_io = r->start;
/* for io must remap the full 36bit address (for reference see
* alchemy/common/setup.c::__fixup_bigphys_addr)
*/
physio = ((phys_t)sock->phys_io) << 4;
/*
* PCMCIA client drivers use the inb/outb macros to access
* the IO registers. Since mips_io_port_base is added
* to the access address of the mips implementation of
* inb/outb, we need to subtract it here because we want
* to access the I/O or MEM address directly, without
* going through this "mips_io_port_base" mechanism.
*/
sock->virt_io = (void *)(ioremap(physio, IO_MAP_SIZE) -
mips_io_port_base);
if (!sock->virt_io) {
dev_err(&pdev->dev, "cannot remap IO area\n");
ret = -ENOMEM;
goto out0;
}
sock->socket.ops = &xxs1500_pcmcia_operations;
sock->socket.owner = THIS_MODULE;
sock->socket.pci_irq = gpio_to_irq(GPIO_CARDIRQ);
sock->socket.features = SS_CAP_STATIC_MAP | SS_CAP_PCCARD;
sock->socket.map_size = MEM_MAP_SIZE;
sock->socket.io_offset = (unsigned long)sock->virt_io;
sock->socket.dev.parent = &pdev->dev;
sock->socket.resource_ops = &pccard_static_ops;
platform_set_drvdata(pdev, sock);
/* setup carddetect irq: use one of the 2 GPIOs as an
* edge detector.
*/
irq = gpio_to_irq(GPIO_CDA);
set_irq_type(irq, IRQ_TYPE_EDGE_BOTH);
ret = request_irq(irq, cdirq, 0, "pcmcia_carddetect", sock);
if (ret) {
dev_err(&pdev->dev, "cannot setup cd irq\n");
goto out1;
}
ret = pcmcia_register_socket(&sock->socket);
if (ret) {
dev_err(&pdev->dev, "failed to register\n");
goto out2;
}
printk(KERN_INFO "MyCable XXS1500 PCMCIA socket services\n");
return 0;
out2:
free_irq(gpio_to_irq(GPIO_CDA), sock);
out1:
iounmap((void *)(sock->virt_io + (u32)mips_io_port_base));
out0:
kfree(sock);
return ret;
}
static int __devexit xxs1500_pcmcia_remove(struct platform_device *pdev)
{
struct xxs1500_pcmcia_sock *sock = platform_get_drvdata(pdev);
pcmcia_unregister_socket(&sock->socket);
free_irq(gpio_to_irq(GPIO_CDA), sock);
iounmap((void *)(sock->virt_io + (u32)mips_io_port_base));
kfree(sock);
return 0;
}
static struct platform_driver xxs1500_pcmcia_socket_driver = {
.driver = {
.name = "xxs1500_pcmcia",
.owner = THIS_MODULE,
},
.probe = xxs1500_pcmcia_probe,
.remove = __devexit_p(xxs1500_pcmcia_remove),
};
int __init xxs1500_pcmcia_socket_load(void)
{
return platform_driver_register(&xxs1500_pcmcia_socket_driver);
}
void __exit xxs1500_pcmcia_socket_unload(void)
{
platform_driver_unregister(&xxs1500_pcmcia_socket_driver);
}
module_init(xxs1500_pcmcia_socket_load);
module_exit(xxs1500_pcmcia_socket_unload);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("PCMCIA Socket Services for MyCable XXS1500 systems");
MODULE_AUTHOR("Manuel Lauss");
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