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openwrt-owl/target/linux/brcm47xx/patches-3.6/015-MIPS-BCM47XX-remove-GPI...

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commit 2da4c74dc3711275e82856e62884c99f7a45f541
Author: Hauke Mehrtens <hauke@hauke-m.de>
Date: Tue Nov 20 22:24:34 2012 +0000
MIPS: BCM47XX: remove GPIO driver
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>
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -101,6 +101,7 @@ config ATH79
config BCM47XX
bool "Broadcom BCM47XX based boards"
+ select ARCH_WANT_OPTIONAL_GPIOLIB
select CEVT_R4K
select CSRC_R4K
select DMA_NONCOHERENT
@@ -108,7 +109,6 @@ 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
--- a/arch/mips/bcm47xx/Kconfig
+++ b/arch/mips/bcm47xx/Kconfig
@@ -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.
--- a/arch/mips/bcm47xx/Makefile
+++ b/arch/mips/bcm47xx/Makefile
@@ -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
--- a/arch/mips/bcm47xx/gpio.c
+++ /dev/null
@@ -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);
--- a/arch/mips/bcm47xx/wgt634u.c
+++ b/arch/mips/bcm47xx/wgt634u.c
@@ -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 ir
/* 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);
--- a/arch/mips/include/asm/mach-bcm47xx/gpio.h
+++ b/arch/mips/include/asm/mach-bcm47xx/gpio.h
@@ -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 */
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