From b78d8e59a6f611e229fab8ec3014c58eba975000 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Mon, 6 Jun 2011 00:07:55 +0800 Subject: gpio/mxc: Change gpio-mxc into an upstanding gpio driver The patch makes necessary changes on gpio-mxc as below to turn it into an upstanding gpio driver. * Add a list to save all mx2 ports references, so that mx2_gpio_irq_handler can walk through all interrupt status registers * Use readl/writel to replace mach-specific accessors __raw_readl/__raw_writel * Change mxc_gpio_init into mxc_gpio_probe function * Move "struct mxc_gpio_port" into gpio-mxc.c, as it needs not to be public at all, and also make some other cleanup on plat-mxc/include/mach/gpio.h at the same time And the patch then migrates mach-imx and mach-mx5 to the updated driver by adding corresponding platform devices. Signed-off-by: Shawn Guo Acked-by: Olof Johansson Acked-by: Sascha Hauer Signed-off-by: Grant Likely --- arch/arm/plat-mxc/devices/Makefile | 1 + arch/arm/plat-mxc/devices/platform-gpio-mxc.c | 32 +++++++++++++++++++++++++++ 2 files changed, 33 insertions(+) create mode 100644 arch/arm/plat-mxc/devices/platform-gpio-mxc.c (limited to 'arch/arm/plat-mxc/devices') diff --git a/arch/arm/plat-mxc/devices/Makefile b/arch/arm/plat-mxc/devices/Makefile index ad2922acf480..b41bf972b54b 100644 --- a/arch/arm/plat-mxc/devices/Makefile +++ b/arch/arm/plat-mxc/devices/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_IMX_HAVE_PLATFORM_FEC) += platform-fec.o obj-$(CONFIG_IMX_HAVE_PLATFORM_FLEXCAN) += platform-flexcan.o obj-$(CONFIG_IMX_HAVE_PLATFORM_FSL_USB2_UDC) += platform-fsl-usb2-udc.o obj-$(CONFIG_IMX_HAVE_PLATFORM_GPIO_KEYS) += platform-gpio_keys.o +obj-y += platform-gpio-mxc.o obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX21_HCD) += platform-imx21-hcd.o obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX2_WDT) += platform-imx2-wdt.o obj-$(CONFIG_IMX_HAVE_PLATFORM_IMXDI_RTC) += platform-imxdi_rtc.o diff --git a/arch/arm/plat-mxc/devices/platform-gpio-mxc.c b/arch/arm/plat-mxc/devices/platform-gpio-mxc.c new file mode 100644 index 000000000000..cf1b7fdfa20d --- /dev/null +++ b/arch/arm/plat-mxc/devices/platform-gpio-mxc.c @@ -0,0 +1,32 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2011 Linaro Limited + * + * This program is free software; you can redistribute it and/or modify it under + * the terms of the GNU General Public License version 2 as published by the + * Free Software Foundation. + */ +#include + +struct platform_device *__init mxc_register_gpio(int id, + resource_size_t iobase, resource_size_t iosize, int irq, int irq_high) +{ + struct resource res[] = { + { + .start = iobase, + .end = iobase + iosize - 1, + .flags = IORESOURCE_MEM, + }, { + .start = irq, + .end = irq, + .flags = IORESOURCE_IRQ, + }, { + .start = irq_high, + .end = irq_high, + .flags = IORESOURCE_IRQ, + }, + }; + + return platform_device_register_resndata(&mxc_aips_bus, + "gpio-mxc", id, res, ARRAY_SIZE(res), NULL, 0); +} -- cgit v1.2.2