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path: root/drivers/gpio/gpio-mxc.c
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2011-07-19gpio/mxc/mxs: fix build error introduced by the irq_gc_ack() renamingShawn Guo
The following commit renames irq_gc_ack() to irq_gc_ack_set_bit(), and makes gpio-mxc and gpio-mxs fail to build. 659fb32d1b67476f4ade25e9ea0e2642a5b9c4b5 genirq: replace irq_gc_ack() with {set,clr}_bit variants (fwd) The patch fixed a couple of typo of comma to semicolon. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-08gpio/mxc: add device tree probe supportShawn Guo
The patch adds device tree probe support for gpio-mxc driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-08gpio/mxc: get rid of the uses of cpu_is_mx()Shawn Guo
The patch removes all the uses of cpu_is_mx(). Instead, it utilizes platform_device_id to distinguish the different gpio types, IMX1_GPIO on i.mx1, IMX21_GPIO on i.mx21 and i.mx27, IMX31_GPIO on all other i.mx SoCs. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-07gpio/mxc: add missing initialization of basic_mmio_gpio shadow variablesLothar Waßmann
The bgpio_init() function does not initialise the shadow register for the GPIO direction register. Thus, when configuring the first GPIO with gpio_set_direction() all other GPIOs of the same bank will be configured as inputs. Since the bgpio layer cannot know whether the register is readable, the initialisation should be done by the caller of bgpio_init(). Also, the 'data' shadow variable that is used inside basic_mmio_gpio to cache the current value of the GPIO_DR register is initialised from the GPIO_PSR register within bgpio_init(). Thus when setting the output value of a certain GPIO, the other GPIO outputs of the same bank will be set or cleared depending on the pin state of the GPIO inputs during bgpio_init(). Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-11gpio/mxc: fix a bug with gpio_get_value callingShawn Guo
When calling gpio_get_value, the gpio number other than bit offset should be passed as the argument. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-07gpio/mxc: convert gpio-mxc to use generic irq chipShawn Guo
The patch converts gpio-mxc driver to use generic irq chip. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-06gpio/mxc: convert gpio-mxc to use basic_mmio_gpio libraryShawn Guo
The gpio-mxc controller complies with basic_mmio_gpio library. The patch convert the driver to use the library. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-06gpio/mxc: Change gpio-mxc into an upstanding gpio driverShawn Guo
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 <shawn.guo@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-06gpio/mxc: Move Freescale MXC gpio driver to drivers/gpioShawn Guo
GPIO drivers are getting moved to drivers/gpio for cleanup and consolidation. This patch moves the plat-mxc driver. Follow up patches will clean it up and make it a fine upstanding gpio driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>