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ARM: mxc: use ARCH_NR_GPIOS to define gpio number 

The patch removes MXC_GPIO_IRQS and instead uses ARCH_NR_GPIOS to
define gpio number.  This change is need when we change mxc gpio
driver to be device tree aware.  When migrating the driver to device
tree, pdev->id becomes unusable.  It requires driver get gpio range
from gpio core, which will dynamically allocates number from
ARCH_NR_GPIOS to 0.

As a bonus point, it removes lines of '#if' and make the code a
little bit cleaner.  The side effect is the waste of number.  But
this is not a point when we go single image.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
hifive-unleashed-5.1
Shawn Guo 2011-07-07 00:37:42 +08:00 committed by Grant Likely
parent e7fc6ae744
commit 14305e685d
1 changed files with 3 additions and 18 deletions
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21
arch/arm/plat-mxc/include/mach/irqs.h
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@ -11,6 +11,8 @@
#ifndef __ASM_ARCH_MXC_IRQS_H__
#define __ASM_ARCH_MXC_IRQS_H__
#include <asm-generic/gpio.h>
/*
* SoCs with TZIC interrupt controller have 128 IRQs, those with AVIC have 64
*/
@ -22,30 +24,13 @@
#define MXC_GPIO_IRQ_START MXC_INTERNAL_IRQS
/* these are ordered by size to support multi-SoC kernels */
#if defined CONFIG_SOC_IMX53
#define MXC_GPIO_IRQS (32 * 7)
#elif defined CONFIG_ARCH_MX2
#define MXC_GPIO_IRQS (32 * 6)
#elif defined CONFIG_SOC_IMX50
#define MXC_GPIO_IRQS (32 * 6)
#elif defined CONFIG_ARCH_MX1
#define MXC_GPIO_IRQS (32 * 4)
#elif defined CONFIG_ARCH_MX25
#define MXC_GPIO_IRQS (32 * 4)
#elif defined CONFIG_SOC_IMX51
#define MXC_GPIO_IRQS (32 * 4)
#elif defined CONFIG_ARCH_MX3
#define MXC_GPIO_IRQS (32 * 3)
#endif
/*
* The next 16 interrupts are for board specific purposes. Since
* the kernel can only run on one machine at a time, we can re-use
* these. If you need more, increase MXC_BOARD_IRQS, but keep it
* within sensible limits.
*/
#define MXC_BOARD_IRQ_START (MXC_INTERNAL_IRQS + MXC_GPIO_IRQS)
#define MXC_BOARD_IRQ_START (MXC_INTERNAL_IRQS + ARCH_NR_GPIOS)
#ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
#define MXC_BOARD_IRQS 80