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

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32992 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
hauke
2012-08-04 19:46:25 +00:00
parent 039f179551
commit 1d6c42df96
13 changed files with 810 additions and 377 deletions
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170
target/linux/brcm47xx/patches-3.3/501-bcma-add-gpio-driver.patch Normal file
View File

@@ -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_ */