leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

MIPS: BCM47XX: remove GPIO driver

Browse Source 
Instated of providing an own GPIO driver use the one provided by ssb and
bcma.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4592
Acked-by: Florian Fainelli <florian@openwrt.org>
This commit is contained in:
Hauke Mehrtens 2012-11-20 22:24:34 +00:00 committed by John Crispin
parent ec43b08b57
commit 2da4c74dc3
6 changed files with 18 additions and 252 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/mips/Kconfig
View File

@ -105,6 +105,7 @@ config ATH79
config BCM47XX
bool "Broadcom BCM47XX based boards"
select ARCH_WANT_OPTIONAL_GPIOLIB
select CEVT_R4K
select CSRC_R4K
select DMA_NONCOHERENT
@ -112,7 +113,6 @@ config BCM47XX
select IRQ_CPU
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
select GENERIC_GPIO
select SYS_HAS_EARLY_PRINTK
select CFE
help

2
arch/mips/bcm47xx/Kconfig
View File

@ -9,6 +9,7 @@ config BCM47XX_SSB
select SSB_EMBEDDED
select SSB_B43_PCI_BRIDGE if PCI
select SSB_PCICORE_HOSTMODE if PCI
select SSB_DRIVER_GPIO
default y
help
Add support for old Broadcom BCM47xx boards with Sonics Silicon Backplane support.
@ -23,6 +24,7 @@ config BCM47XX_BCMA
select BCMA_DRIVER_MIPS
select BCMA_HOST_PCI if PCI
select BCMA_DRIVER_PCI_HOSTMODE if PCI
select BCMA_DRIVER_GPIO
default y
help
Add support for new Broadcom BCM47xx boards with Broadcom specific Advanced Microcontroller Bus.

2
arch/mips/bcm47xx/Makefile
View File

@ -3,5 +3,5 @@
# under Linux.
#
obj-y += gpio.o irq.o nvram.o prom.o serial.o setup.o time.o sprom.o
obj-y += irq.o nvram.o prom.o serial.o setup.o time.o sprom.o
obj-$(CONFIG_BCM47XX_SSB) += wgt634u.o

102
arch/mips/bcm47xx/gpio.c
View File

@ -1,102 +0,0 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
*/
#include <linux/export.h>
#include <linux/ssb/ssb.h>
#include <linux/ssb/ssb_driver_chipcommon.h>
#include <linux/ssb/ssb_driver_extif.h>
#include <asm/mach-bcm47xx/bcm47xx.h>
#include <asm/mach-bcm47xx/gpio.h>
#if (BCM47XX_CHIPCO_GPIO_LINES > BCM47XX_EXTIF_GPIO_LINES)
static DECLARE_BITMAP(gpio_in_use, BCM47XX_CHIPCO_GPIO_LINES);
#else
static DECLARE_BITMAP(gpio_in_use, BCM47XX_EXTIF_GPIO_LINES);
#endif
int gpio_request(unsigned gpio, const char *tag)
{
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco) &&
((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
return -EINVAL;
if (ssb_extif_available(&bcm47xx_bus.ssb.extif) &&
((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES))
return -EINVAL;
if (test_and_set_bit(gpio, gpio_in_use))
return -EBUSY;
return 0;
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
if (gpio >= BCM47XX_CHIPCO_GPIO_LINES)
return -EINVAL;
if (test_and_set_bit(gpio, gpio_in_use))
return -EBUSY;
return 0;
#endif
}
return -EINVAL;
}
EXPORT_SYMBOL(gpio_request);
void gpio_free(unsigned gpio)
{
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco) &&
((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
return;
if (ssb_extif_available(&bcm47xx_bus.ssb.extif) &&
((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES))
return;
clear_bit(gpio, gpio_in_use);
return;
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
if (gpio >= BCM47XX_CHIPCO_GPIO_LINES)
return;
clear_bit(gpio, gpio_in_use);
return;
#endif
}
}
EXPORT_SYMBOL(gpio_free);
int gpio_to_irq(unsigned gpio)
{
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco))
return ssb_mips_irq(bcm47xx_bus.ssb.chipco.dev) + 2;
else if (ssb_extif_available(&bcm47xx_bus.ssb.extif))
return ssb_mips_irq(bcm47xx_bus.ssb.extif.dev) + 2;
else
return -EINVAL;
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
return bcma_core_mips_irq(bcm47xx_bus.bcma.bus.drv_cc.core) + 2;
#endif
}
return -EINVAL;
}
EXPORT_SYMBOL_GPL(gpio_to_irq);

8
arch/mips/bcm47xx/wgt634u.c
View File

@ -11,6 +11,7 @@
#include <linux/leds.h>
#include <linux/mtd/physmap.h>
#include <linux/ssb/ssb.h>
#include <linux/ssb/ssb_embedded.h>
#include <linux/interrupt.h>
#include <linux/reboot.h>
#include <linux/gpio.h>
@ -116,7 +117,8 @@ static irqreturn_t gpio_interrupt(int irq, void *ignored)
/* Interrupt are level triggered, revert the interrupt polarity
to clear the interrupt. */
gpio_polarity(WGT634U_GPIO_RESET, state);
ssb_gpio_polarity(&bcm47xx_bus.ssb, 1 << WGT634U_GPIO_RESET,
state ? 1 << WGT634U_GPIO_RESET : 0);
if (!state) {
printk(KERN_INFO "Reset button pressed");
@ -150,7 +152,9 @@ static int __init wgt634u_init(void)
gpio_interrupt, IRQF_SHARED,
"WGT634U GPIO", &bcm47xx_bus.ssb.chipco)) {
gpio_direction_input(WGT634U_GPIO_RESET);
gpio_intmask(WGT634U_GPIO_RESET, 1);
ssb_gpio_intmask(&bcm47xx_bus.ssb,
1 << WGT634U_GPIO_RESET,
1 << WGT634U_GPIO_RESET);
ssb_chipco_irq_mask(&bcm47xx_bus.ssb.chipco,
SSB_CHIPCO_IRQ_GPIO,
SSB_CHIPCO_IRQ_GPIO);

154
arch/mips/include/asm/mach-bcm47xx/gpio.h
View File

@ -1,155 +1,17 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
*/
#ifndef __ASM_MIPS_MACH_BCM47XX_GPIO_H
#define __ASM_MIPS_MACH_BCM47XX_GPIO_H
#ifndef __BCM47XX_GPIO_H
#define __BCM47XX_GPIO_H
#include <asm-generic/gpio.h>
#include <linux/ssb/ssb_embedded.h>
#include <linux/bcma/bcma.h>
#include <asm/mach-bcm47xx/bcm47xx.h>
#define gpio_get_value __gpio_get_value
#define gpio_set_value __gpio_set_value
#define BCM47XX_EXTIF_GPIO_LINES 5
#define BCM47XX_CHIPCO_GPIO_LINES 16
#define gpio_cansleep __gpio_cansleep
#define gpio_to_irq __gpio_to_irq
extern int gpio_request(unsigned gpio, const char *label);
extern void gpio_free(unsigned gpio);
extern int gpio_to_irq(unsigned gpio);
static inline int gpio_get_value(unsigned gpio)
static inline int irq_to_gpio(unsigned int irq)
{
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
return ssb_gpio_in(&bcm47xx_bus.ssb, 1 << gpio);
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
return bcma_chipco_gpio_in(&bcm47xx_bus.bcma.bus.drv_cc,
1 << gpio);
#endif
}
return -EINVAL;
}
#define gpio_get_value_cansleep gpio_get_value
static inline void gpio_set_value(unsigned gpio, int value)
{
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
ssb_gpio_out(&bcm47xx_bus.ssb, 1 << gpio,
value ? 1 << gpio : 0);
return;
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
bcma_chipco_gpio_out(&bcm47xx_bus.bcma.bus.drv_cc, 1 << gpio,
value ? 1 << gpio : 0);
return;
#endif
}
}
#define gpio_set_value_cansleep gpio_set_value
static inline int gpio_cansleep(unsigned gpio)
{
return 0;
}
static inline int gpio_is_valid(unsigned gpio)
{
return gpio < (BCM47XX_EXTIF_GPIO_LINES + BCM47XX_CHIPCO_GPIO_LINES);
}
static inline int gpio_direction_input(unsigned gpio)
{
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
ssb_gpio_outen(&bcm47xx_bus.ssb, 1 << gpio, 0);
return 0;
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
bcma_chipco_gpio_outen(&bcm47xx_bus.bcma.bus.drv_cc, 1 << gpio,
0);
return 0;
#endif
}
return -EINVAL;
}
static inline int gpio_direction_output(unsigned gpio, int value)
{
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
/* first set the gpio out value */
ssb_gpio_out(&bcm47xx_bus.ssb, 1 << gpio,
value ? 1 << gpio : 0);
/* then set the gpio mode */
ssb_gpio_outen(&bcm47xx_bus.ssb, 1 << gpio, 1 << gpio);
return 0;
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
/* first set the gpio out value */
bcma_chipco_gpio_out(&bcm47xx_bus.bcma.bus.drv_cc, 1 << gpio,
value ? 1 << gpio : 0);
/* then set the gpio mode */
bcma_chipco_gpio_outen(&bcm47xx_bus.bcma.bus.drv_cc, 1 << gpio,
1 << gpio);
return 0;
#endif
}
return -EINVAL;
}
static inline int gpio_intmask(unsigned gpio, int value)
{
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
ssb_gpio_intmask(&bcm47xx_bus.ssb, 1 << gpio,
value ? 1 << gpio : 0);
return 0;
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
bcma_chipco_gpio_intmask(&bcm47xx_bus.bcma.bus.drv_cc,
1 << gpio, value ? 1 << gpio : 0);
return 0;
#endif
}
return -EINVAL;
}
static inline int gpio_polarity(unsigned gpio, int value)
{
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
ssb_gpio_polarity(&bcm47xx_bus.ssb, 1 << gpio,
value ? 1 << gpio : 0);
return 0;
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
bcma_chipco_gpio_polarity(&bcm47xx_bus.bcma.bus.drv_cc,
1 << gpio, value ? 1 << gpio : 0);
return 0;
#endif
}
return -EINVAL;
}
#endif /* __BCM47XX_GPIO_H */