openwrt-xburst/target/linux/brcm47xx/patches-3.3/501-bcma-add-gpio-driver.patch

--- 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 +1,90 @@
+/*
+ * 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);
--- 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 +1,21 @@
+#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);
+
+static inline int bcma_gpio_count(struct bcma_bus *bus)
+{
+	return BCMA_GPIO_CC_LINES;
+}
+
+#endif /* LINUX_BCMA_DRIVER_GPIO_H_ */