xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

gpio: Emma Mobile GPIO driver V2

Browse Source 
This patch is V2 of the Emma Mobile GPIO driver. This
driver is designed to be reusable between multiple SoCs
that share the same basic building block, but so far it
has only been used on Emma Mobile EV2.

Each driver instance handles 32 GPIOs with individually
maskable IRQs. The driver operates on two I/O memory
ranges and the 32 GPIOs are hooked up to two interrupts.

In the case of Emma Mobile EV2 this GPIO building block
is used as main external interrupt controller hooking up
159 GPIOS as 159 interrupts via 5 driver instances and
10 interrupts to the GIC and the Cortex-A9 Dual.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Magnus Damm
2012-05-17 15:22:23 +09:00
committed by Rafael J. Wysocki
parent 4da7731934
commit a07e103ef0
4 changed files with 435 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
include/linux/platform_data/gpio-em.h Normal file
View File

@@ -0,0 +1,10 @@
#ifndef __GPIO_EM_H__
#define __GPIO_EM_H__
struct gpio_em_config {
unsigned int gpio_base;
unsigned int irq_base;
unsigned int number_of_pins;
};
#endif /* __GPIO_EM_H__ */