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8d7cf8370d
The patch makes necessary changes on gpio-mxs as below to turn it into an upstanding gpio driver. * Clean up the gpio port definition stuff * Use readl/writel to replace mach-specific accessors __raw_readl/__raw_writel * Change mxs_gpio_init into mxs_gpio_probe function And it then migrates mach-mxs to the updated driver by adding corresponding platform devices. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/*
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* Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License version 2 as published by the
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* Free Software Foundation.
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*/
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#include <linux/compiler.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <mach/mx23.h>
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#include <mach/mx28.h>
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#include <mach/devices-common.h>
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struct platform_device *__init mxs_add_gpio(
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int id, resource_size_t iobase, int irq)
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{
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struct resource res[] = {
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{
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.start = iobase,
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.end = iobase + SZ_8K - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.start = irq,
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.end = irq,
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.flags = IORESOURCE_IRQ,
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},
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};
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return platform_device_register_resndata(&mxs_apbh_bus,
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"gpio-mxs", id, res, ARRAY_SIZE(res), NULL, 0);
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}
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static int __init mxs_add_mxs_gpio(void)
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{
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if (cpu_is_mx23()) {
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mxs_add_gpio(0, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO0);
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mxs_add_gpio(1, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO1);
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mxs_add_gpio(2, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO2);
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}
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if (cpu_is_mx28()) {
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mxs_add_gpio(0, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO0);
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mxs_add_gpio(1, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO1);
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mxs_add_gpio(2, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO2);
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mxs_add_gpio(3, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO3);
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mxs_add_gpio(4, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO4);
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}
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return 0;
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}
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postcore_initcall(mxs_add_mxs_gpio);
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