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authorAurelien Jarno <aurelien@aurel32.net>2008-10-14 11:44:26 +0200
committerRalf Baechle <ralf@linux-mips.org>2008-10-15 12:46:50 +0100
commitb06f3e19a673e44ff56ce265600c5c6eb99aa914 (patch)
tree50ae6bf47907f1f2e71f849e0638281a2d86f80d /arch/mips
parentd412283cef135811e1ed6c3840376c239f4920dd (diff)
downloadop-kernel-dev-b06f3e19a673e44ff56ce265600c5c6eb99aa914.zip
op-kernel-dev-b06f3e19a673e44ff56ce265600c5c6eb99aa914.tar.gz
MIPS: BCM47xx: Use the new SSB GPIO API
This patch simplifies the BCM47xx GPIO code by using the new SSB GPIO API, which does a lot things that were implemented directly in the BCM47xx code. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/Kconfig1
-rw-r--r--arch/mips/bcm47xx/gpio.c85
-rw-r--r--arch/mips/bcm47xx/setup.c5
-rw-r--r--arch/mips/include/asm/mach-bcm47xx/gpio.h41
4 files changed, 58 insertions, 74 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index cd5fbf6..b905744 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -52,6 +52,7 @@ config BCM47XX
select SSB
select SSB_DRIVER_MIPS
select SSB_DRIVER_EXTIF
+ select SSB_EMBEDDED
select SSB_PCICORE_HOSTMODE if PCI
select GENERIC_GPIO
select SYS_HAS_EARLY_PRINTK
diff --git a/arch/mips/bcm47xx/gpio.c b/arch/mips/bcm47xx/gpio.c
index f5a53ac..9b79880 100644
--- a/arch/mips/bcm47xx/gpio.c
+++ b/arch/mips/bcm47xx/gpio.c
@@ -12,68 +12,51 @@
#include <asm/mach-bcm47xx/bcm47xx.h>
#include <asm/mach-bcm47xx/gpio.h>
-int bcm47xx_gpio_to_irq(unsigned gpio)
+#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)
{
- if (ssb_bcm47xx.chipco.dev)
- return ssb_mips_irq(ssb_bcm47xx.chipco.dev) + 2;
- else if (ssb_bcm47xx.extif.dev)
- return ssb_mips_irq(ssb_bcm47xx.extif.dev) + 2;
- else
+ if (ssb_chipco_available(&ssb_bcm47xx.chipco) &&
+ ((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
return -EINVAL;
-}
-EXPORT_SYMBOL_GPL(bcm47xx_gpio_to_irq);
-int bcm47xx_gpio_get_value(unsigned gpio)
-{
- if (ssb_bcm47xx.chipco.dev)
- return ssb_chipco_gpio_in(&ssb_bcm47xx.chipco, 1 << gpio);
- else if (ssb_bcm47xx.extif.dev)
- return ssb_extif_gpio_in(&ssb_bcm47xx.extif, 1 << gpio);
- else
- return 0;
-}
-EXPORT_SYMBOL_GPL(bcm47xx_gpio_get_value);
+ if (ssb_extif_available(&ssb_bcm47xx.extif) &&
+ ((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES))
+ return -EINVAL;
-void bcm47xx_gpio_set_value(unsigned gpio, int value)
-{
- if (ssb_bcm47xx.chipco.dev)
- ssb_chipco_gpio_out(&ssb_bcm47xx.chipco,
- 1 << gpio,
- value ? 1 << gpio : 0);
- else if (ssb_bcm47xx.extif.dev)
- ssb_extif_gpio_out(&ssb_bcm47xx.extif,
- 1 << gpio,
- value ? 1 << gpio : 0);
-}
-EXPORT_SYMBOL_GPL(bcm47xx_gpio_set_value);
+ if (test_and_set_bit(gpio, gpio_in_use))
+ return -EBUSY;
-int bcm47xx_gpio_direction_input(unsigned gpio)
-{
- if (ssb_bcm47xx.chipco.dev && (gpio < BCM47XX_CHIPCO_GPIO_LINES))
- ssb_chipco_gpio_outen(&ssb_bcm47xx.chipco,
- 1 << gpio, 0);
- else if (ssb_bcm47xx.extif.dev && (gpio < BCM47XX_EXTIF_GPIO_LINES))
- ssb_extif_gpio_outen(&ssb_bcm47xx.extif,
- 1 << gpio, 0);
- else
- return -EINVAL;
return 0;
}
-EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_input);
+EXPORT_SYMBOL(gpio_request);
-int bcm47xx_gpio_direction_output(unsigned gpio, int value)
+void gpio_free(unsigned gpio)
{
- bcm47xx_gpio_set_value(gpio, value);
+ if (ssb_chipco_available(&ssb_bcm47xx.chipco) &&
+ ((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
+ return;
+
+ if (ssb_extif_available(&ssb_bcm47xx.extif) &&
+ ((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES))
+ return;
+
+ clear_bit(gpio, gpio_in_use);
+}
+EXPORT_SYMBOL(gpio_free);
- if (ssb_bcm47xx.chipco.dev && (gpio < BCM47XX_CHIPCO_GPIO_LINES))
- ssb_chipco_gpio_outen(&ssb_bcm47xx.chipco,
- 1 << gpio, 1 << gpio);
- else if (ssb_bcm47xx.extif.dev && (gpio < BCM47XX_EXTIF_GPIO_LINES))
- ssb_extif_gpio_outen(&ssb_bcm47xx.extif,
- 1 << gpio, 1 << gpio);
+int gpio_to_irq(unsigned gpio)
+{
+ if (ssb_chipco_available(&ssb_bcm47xx.chipco))
+ return ssb_mips_irq(ssb_bcm47xx.chipco.dev) + 2;
+ else if (ssb_extif_available(&ssb_bcm47xx.extif))
+ return ssb_mips_irq(ssb_bcm47xx.extif.dev) + 2;
else
return -EINVAL;
- return 0;
}
-EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_output);
+EXPORT_SYMBOL_GPL(gpio_to_irq);
diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index 8d36f18..2f580fa 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -27,6 +27,7 @@
#include <linux/types.h>
#include <linux/ssb/ssb.h>
+#include <linux/ssb/ssb_embedded.h>
#include <asm/bootinfo.h>
#include <asm/reboot.h>
#include <asm/time.h>
@@ -41,7 +42,7 @@ static void bcm47xx_machine_restart(char *command)
printk(KERN_ALERT "Please stand by while rebooting the system...\n");
local_irq_disable();
/* Set the watchdog timer to reset immediately */
- ssb_chipco_watchdog_timer_set(&ssb_bcm47xx.chipco, 1);
+ ssb_watchdog_timer_set(&ssb_bcm47xx, 1);
while (1)
cpu_relax();
}
@@ -50,7 +51,7 @@ static void bcm47xx_machine_halt(void)
{
/* Disable interrupts and watchdog and spin forever */
local_irq_disable();
- ssb_chipco_watchdog_timer_set(&ssb_bcm47xx.chipco, 0);
+ ssb_watchdog_timer_set(&ssb_bcm47xx, 0);
while (1)
cpu_relax();
}
diff --git a/arch/mips/include/asm/mach-bcm47xx/gpio.h b/arch/mips/include/asm/mach-bcm47xx/gpio.h
index cfc8f4d..d8ff4cd 100644
--- a/arch/mips/include/asm/mach-bcm47xx/gpio.h
+++ b/arch/mips/include/asm/mach-bcm47xx/gpio.h
@@ -9,47 +9,46 @@
#ifndef __BCM47XX_GPIO_H
#define __BCM47XX_GPIO_H
+#include <linux/ssb/ssb_embedded.h>
+#include <asm/mach-bcm47xx/bcm47xx.h>
+
#define BCM47XX_EXTIF_GPIO_LINES 5
#define BCM47XX_CHIPCO_GPIO_LINES 16
-extern int bcm47xx_gpio_to_irq(unsigned gpio);
-extern int bcm47xx_gpio_get_value(unsigned gpio);
-extern void bcm47xx_gpio_set_value(unsigned gpio, int value);
-extern int bcm47xx_gpio_direction_input(unsigned gpio);
-extern int bcm47xx_gpio_direction_output(unsigned gpio, int value);
-
-static inline int gpio_request(unsigned gpio, const char *label)
-{
- return 0;
-}
+extern int gpio_request(unsigned gpio, const char *label);
+extern void gpio_free(unsigned gpio);
+extern int gpio_to_irq(unsigned gpio);
-static inline void gpio_free(unsigned gpio)
+static inline int gpio_get_value(unsigned gpio)
{
+ return ssb_gpio_in(&ssb_bcm47xx, 1 << gpio);
}
-static inline int gpio_to_irq(unsigned gpio)
+static inline void gpio_set_value(unsigned gpio, int value)
{
- return bcm47xx_gpio_to_irq(gpio);
+ ssb_gpio_out(&ssb_bcm47xx, 1 << gpio, value ? 1 << gpio : 0);
}
-static inline int gpio_get_value(unsigned gpio)
+static inline int gpio_direction_input(unsigned gpio)
{
- return bcm47xx_gpio_get_value(gpio);
+ return ssb_gpio_outen(&ssb_bcm47xx, 1 << gpio, 0);
}
-static inline void gpio_set_value(unsigned gpio, int value)
+static inline int gpio_direction_output(unsigned gpio, int value)
{
- bcm47xx_gpio_set_value(gpio, value);
+ return ssb_gpio_outen(&ssb_bcm47xx, 1 << gpio, 1 << gpio);
}
-static inline int gpio_direction_input(unsigned gpio)
+static int gpio_intmask(unsigned gpio, int value)
{
- return bcm47xx_gpio_direction_input(gpio);
+ return ssb_gpio_intmask(&ssb_bcm47xx, 1 << gpio,
+ value ? 1 << gpio : 0);
}
-static inline int gpio_direction_output(unsigned gpio, int value)
+static int gpio_polarity(unsigned gpio, int value)
{
- return bcm47xx_gpio_direction_output(gpio, value);
+ return ssb_gpio_polarity(&ssb_bcm47xx, 1 << gpio,
+ value ? 1 << gpio : 0);
}
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