summaryrefslogtreecommitdiff
path: root/arch/arm/mach-davinci/include/mach/gpio.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-08 21:00:55 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-08 21:00:55 +0400
commit44d51a029f95d49c5c7ccd7808f81904c20c3abd (patch)
tree41b82695b3bfb73b4146809546c2d79d6eaa4c47 /arch/arm/mach-davinci/include/mach/gpio.h
parent2d53056973079e6c2ffc0d7ae3afbdd3d4f18ae3 (diff)
parentcce3dddb87e4b72b1787527eec6826a43a562e71 (diff)
downloadlinux-44d51a029f95d49c5c7ccd7808f81904c20c3abd.tar.xz
Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci
* 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci: davinci: dm646x EVM: Specify reserved EDMA channel/slots davinci: da8xx/omapl EVM: Specify reserved channels/slots davinci: support for EDMA resource sharing davinci: edma: provide ability to detect insufficient CC info data davinci: da8xx: sparse cleanup: remove duplicate entries in irq priorities davinci: DM365: fixed second serial port Davinci: tnetv107x evm board initial support Davinci: tnetv107x initial gpio support Davinci: tnetv107x soc support Davinci: tnetv107x decompresser uart definitions Davinci: generalized debug macros
Diffstat (limited to 'arch/arm/mach-davinci/include/mach/gpio.h')
-rw-r--r--arch/arm/mach-davinci/include/mach/gpio.h22
1 files changed, 15 insertions, 7 deletions
diff --git a/arch/arm/mach-davinci/include/mach/gpio.h b/arch/arm/mach-davinci/include/mach/gpio.h
index 504cc180a60b..fbece126c2bf 100644
--- a/arch/arm/mach-davinci/include/mach/gpio.h
+++ b/arch/arm/mach-davinci/include/mach/gpio.h
@@ -25,6 +25,7 @@
enum davinci_gpio_type {
GPIO_TYPE_DAVINCI = 0,
+ GPIO_TYPE_TNETV107X,
};
/*
@@ -87,9 +88,13 @@ static inline u32 __gpio_mask(unsigned gpio)
return 1 << (gpio % 32);
}
-/* The get/set/clear functions will inline when called with constant
+/*
+ * The get/set/clear functions will inline when called with constant
* parameters referencing built-in GPIOs, for low-overhead bitbanging.
*
+ * gpio_set_value() will inline only on traditional Davinci style controllers
+ * with distinct set/clear registers.
+ *
* Otherwise, calls with variable parameters or referencing external
* GPIOs (e.g. on GPIO expander chips) use outlined functions.
*/
@@ -100,12 +105,15 @@ static inline void gpio_set_value(unsigned gpio, int value)
u32 mask;
ctlr = __gpio_to_controller(gpio);
- mask = __gpio_mask(gpio);
- if (value)
- __raw_writel(mask, ctlr->set_data);
- else
- __raw_writel(mask, ctlr->clr_data);
- return;
+
+ if (ctlr->set_data != ctlr->clr_data) {
+ mask = __gpio_mask(gpio);
+ if (value)
+ __raw_writel(mask, ctlr->set_data);
+ else
+ __raw_writel(mask, ctlr->clr_data);
+ return;
+ }
}
__gpio_set_value(gpio, value);