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Support clk in gpio driver. There's no gpio clock in PXA25x and PXA27x.
So use dummy clk instead. And move the gpio edge initialization into
gpio driver for arch-mmp.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
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Append code to clear gpio edge detect in gpio-pxa driver.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
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Remove most gpio macros and change gpio driver to platform driver.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
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Remove __raw_readl()/__raw_writel(). Use readl_relaxed()/writel_relaxed()
instead.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
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Use cpuid to recognize the gpio number and type. CPU_PXA26x is the
special case since we can't identify it by cpuid.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
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Avoid to define gpio_to_irq() and irq_to_gpio() for potential name
confliction since multiple architecture will be built together.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
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GPIO0 and GPIO1 are linked to unique interrupt line in PXA series,
others are linked to another interrupt line. All GPIO are linked to one
interrupt line in MMP series.
Since gpio driver is shared between PXA series and MMP series, define
GPIO0 and GPIO1 as chained interrupt chip. So we can move out gpio code
from irq.c to gpio-pxa.c.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
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This sorts out merge conflicts with the arm/gpio branch that
already got merged into mainline Linux.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The <mach/gpio.h> file is included from upper directories
and deal with generic GPIO and gpiolib stuff. Break out the
platform and driver specific defines and functions into its own
header file.
Cc: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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As per example from the other ARM boards, push the PXA
GPIO driver down to the GPIO subsystem so it can be consolidated.
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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