brcm47xx: use libgpio instaed of implementing the gpio interface ourself.

SVN-Revision: 32992

1 files changed, 170 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/patches-3.3/501-bcma-add-gpio-driver.patch b/target/linux/brcm47xx/patches-3.3/501-bcma-add-gpio-driver.patch
new file mode 100644
index 0000000000..1fd2cffffb
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.3/501-bcma-add-gpio-driver.patch
@@ -0,0 +1,170 @@
+--- a/drivers/bcma/Kconfig
++++ b/drivers/bcma/Kconfig
+@@ -39,6 +39,11 @@ config BCMA_HOST_SOC
+ 	depends on BCMA_DRIVER_MIPS
+ 	select USB_HCD_BCMA if USB_EHCI_HCD || USB_OHCI_HCD
+ 
++config BCMA_DRIVER_GPIO
++	bool
++	depends on BCMA_DRIVER_MIPS
++	default y
++
+ config BCMA_SFLASH
+ 	bool
+ 	depends on BCMA_DRIVER_MIPS
+--- a/drivers/bcma/Makefile
++++ b/drivers/bcma/Makefile
+@@ -6,6 +6,7 @@ bcma-y					+= driver_pci.o
+ bcma-$(CONFIG_BCMA_DRIVER_PCI_HOSTMODE)	+= driver_pci_host.o
+ bcma-$(CONFIG_BCMA_DRIVER_MIPS)		+= driver_mips.o
+ bcma-$(CONFIG_BCMA_DRIVER_GMAC_CMN)	+= driver_gmac_cmn.o
++bcma-$(CONFIG_BCMA_DRIVER_GPIO)		+= driver_gpio.o
+ bcma-$(CONFIG_BCMA_HOST_PCI)		+= host_pci.o
+ bcma-$(CONFIG_BCMA_HOST_SOC)		+= host_soc.o
+ obj-$(CONFIG_BCMA)			+= bcma.o
+--- /dev/null
++++ b/drivers/bcma/driver_gpio.c
+@@ -0,0 +1,96 @@
++/*
++ * Broadcom specific AMBA
++ * GPIO driver for SoCs
++ *
++ * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de>
++ *
++ * Licensed under the GNU/GPL. See COPYING for details.
++ */
++
++#include <linux/export.h>
++#include <linux/bcma/bcma.h>
++#include <linux/bcma/bcma_driver_gpio.h>
++
++u32 bcma_gpio_in(struct bcma_bus *bus, u32 mask)
++{
++	unsigned long flags;
++	u32 res = 0;
++
++	spin_lock_irqsave(&bus->gpio_lock, flags);
++	res = bcma_chipco_gpio_in(&bus->drv_cc, mask);
++	spin_unlock_irqrestore(&bus->gpio_lock, flags);
++
++	return res;
++}
++EXPORT_SYMBOL(bcma_gpio_in);
++
++u32 bcma_gpio_out(struct bcma_bus *bus, u32 mask, u32 value)
++{
++	unsigned long flags;
++	u32 res = 0;
++
++	spin_lock_irqsave(&bus->gpio_lock, flags);
++	res = bcma_chipco_gpio_out(&bus->drv_cc, mask, value);
++	spin_unlock_irqrestore(&bus->gpio_lock, flags);
++
++	return res;
++}
++EXPORT_SYMBOL(bcma_gpio_out);
++
++u32 bcma_gpio_outen(struct bcma_bus *bus, u32 mask, u32 value)
++{
++	unsigned long flags;
++	u32 res = 0;
++
++	spin_lock_irqsave(&bus->gpio_lock, flags);
++	res = bcma_chipco_gpio_outen(&bus->drv_cc, mask, value);
++	spin_unlock_irqrestore(&bus->gpio_lock, flags);
++
++	return res;
++}
++EXPORT_SYMBOL(bcma_gpio_outen);
++
++u32 bcma_gpio_control(struct bcma_bus *bus, u32 mask, u32 value)
++{
++	unsigned long flags;
++	u32 res = 0;
++
++	spin_lock_irqsave(&bus->gpio_lock, flags);
++	res = bcma_chipco_gpio_control(&bus->drv_cc, mask, value);
++	spin_unlock_irqrestore(&bus->gpio_lock, flags);
++
++	return res;
++}
++EXPORT_SYMBOL(bcma_gpio_control);
++
++u32 bcma_gpio_intmask(struct bcma_bus *bus, u32 mask, u32 value)
++{
++	unsigned long flags;
++	u32 res = 0;
++
++	spin_lock_irqsave(&bus->gpio_lock, flags);
++	res = bcma_chipco_gpio_intmask(&bus->drv_cc, mask, value);
++	spin_unlock_irqrestore(&bus->gpio_lock, flags);
++
++	return res;
++}
++EXPORT_SYMBOL(bcma_gpio_intmask);
++
++u32 bcma_gpio_polarity(struct bcma_bus *bus, u32 mask, u32 value)
++{
++	unsigned long flags;
++	u32 res = 0;
++
++	spin_lock_irqsave(&bus->gpio_lock, flags);
++	res = bcma_chipco_gpio_polarity(&bus->drv_cc, mask, value);
++	spin_unlock_irqrestore(&bus->gpio_lock, flags);
++
++	return res;
++}
++EXPORT_SYMBOL(bcma_gpio_polarity);
++
++int bcma_gpio_count(struct bcma_bus *bus)
++{
++	return BCMA_GPIO_CC_LINES;
++}
++EXPORT_SYMBOL(bcma_gpio_count);
+--- a/drivers/bcma/scan.c
++++ b/drivers/bcma/scan.c
+@@ -422,6 +422,10 @@ void bcma_init_bus(struct bcma_bus *bus)
+ 	if (bus->init_done)
+ 		return;
+ 
++#ifdef CONFIG_BCMA_DRIVER_GPIO
++	spin_lock_init(&bus->gpio_lock);
++#endif
++
+ 	INIT_LIST_HEAD(&bus->cores);
+ 	bus->nr_cores = 0;
+ 
+--- a/include/linux/bcma/bcma.h
++++ b/include/linux/bcma/bcma.h
+@@ -255,6 +255,11 @@ struct bcma_bus {
+ 	struct bcma_drv_mips drv_mips;
+ 	struct bcma_drv_gmac_cmn drv_gmac_cmn;
+ 
++#ifdef CONFIG_BCMA_DRIVER_GPIO
++	/* Lock for GPIO register access. */
++	spinlock_t gpio_lock;
++#endif /* CONFIG_BCMA_DRIVER_GPIO */
++
+ 	/* We decided to share SPROM struct with SSB as long as we do not need
+ 	 * any hacks for BCMA. This simplifies drivers code. */
+ 	struct ssb_sprom sprom;
+--- /dev/null
++++ b/include/linux/bcma/bcma_driver_gpio.h
+@@ -0,0 +1,17 @@
++#ifndef LINUX_BCMA_DRIVER_GPIO_H_
++#define LINUX_BCMA_DRIVER_GPIO_H_
++
++#include <linux/types.h>
++#include <linux/bcma/bcma.h>
++
++#define BCMA_GPIO_CC_LINES	16
++
++u32 bcma_gpio_in(struct bcma_bus *bus, u32 mask);
++u32 bcma_gpio_out(struct bcma_bus *bus, u32 mask, u32 value);
++u32 bcma_gpio_outen(struct bcma_bus *bus, u32 mask, u32 value);
++u32 bcma_gpio_control(struct bcma_bus *bus, u32 mask, u32 value);
++u32 bcma_gpio_intmask(struct bcma_bus *bus, u32 mask, u32 value);
++u32 bcma_gpio_polarity(struct bcma_bus *bus, u32 mask, u32 value);
++int bcma_gpio_count(struct bcma_bus *bus);
++
++#endif /* LINUX_BCMA_DRIVER_GPIO_H_ */