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* [ARM] pxa: move common GPIO handling code into plat-pxaEric Miao2009-03-231-365/+0
| | | | | | | | | | | | | | | | | | | | | | 1. add common GPIO handling code into [arch/arm/plat-pxa] 2. common code in <mach/gpio.h> moved into <plat/gpio.h>, new processors should implement its own <mach/gpio.h>, provide the following required definitions and '#include <plat/gpio.h>' in the end: - GPIO_REGS_VIRT for mapped virtual address of the GPIO registers' physical I/O memory - macros of GPLR(), GPSR(), GPDR() for constant optimization for functions gpio_{set,get}_value() (so that bit-bang code can still have tolerable performance) - NR_BUILTIN_GPIO for the number of onchip GPIO - definitions of __gpio_is_inverted() and __gpio_is_occupied(), they can be either macros or inlined functions Signed-off-by: Eric Miao <eric.miao@marvell.com>
* [ARM] pxa: access GPIO registers by chip so to make it further genericEric Miao2009-03-091-168/+178
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Let's handle GPIOs by banks, each bank covers up to 32 GPIOs with one set of registers, and each set of registers start from different offsets. GPLR GPDR GPSR GPCR GRER GFER GEDR BANK 0 - 0x0000 0x000C 0x0018 0x0024 0x0030 0x003C 0x0048 BANK 1 - 0x0004 0x0010 0x001C 0x0028 0x0034 0x0040 0x004C BANK 2 - 0x0008 0x0014 0x0020 0x002C 0x0038 0x0044 0x0050 BANK 3 - 0x0100 0x010C 0x0118 0x0124 0x0130 0x013C 0x0148 BANK 4 - 0x0104 0x0110 0x011C 0x0128 0x0134 0x0140 0x014C BANK 5 - 0x0108 0x0114 0x0120 0x012C 0x0138 0x0144 0x0150 NOTE: BANK 3 is only available on PXA27x and later processors. BANK 4 and 5 are only available on PXA935 1. introduce GPIO_BANK(n) for the offset base of each bank 2. 'struct pxa_gpio_chip' is expanded to include IRQ edge and mask setings, and saved register values as well, and is dynamically allocated due to possible bank number ranging from 3 to 6 3. all accesses to GPIO registers are made through 'regbase' within 'pxa_gpio_chip', and register offset 4. introduce several inline functions to simplify the code a bit 5. change IRQ demux handler to base on gpio chips Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Eric Miao <eric.miao@marvell.com>
* [ARM] pxa: move declaration of 'pxa_last_gpio' into <mach/gpio.h>Eric Miao2009-03-091-2/+2
| | | | Signed-off-by: Eric Miao <eric.miao@marvell.com>
* [ARM] pxa: move GPIO register definitions into <mach/gpio.h>Eric Miao2009-03-091-9/+5
| | | | | | | | This makes gpio.c fully independent of pxa-regs.h (except for the virtual address of the registers). Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Eric Miao <eric.miao@marvell.com>
* [ARM] pxa: move pxa_gpio_mode() outside of generic gpio.cEric Miao2009-03-091-31/+0
| | | | | | | | Looks like we have to live with pxa_gpio_mode() for a while, giving its presence is actually making gpio.c not generic enough, let's move it temporarily outside before it can be fully purged. Signed-off-by: Eric Miao <eric.miao@marvell.com>
* [ARM] pxa: move IRQ handling of GPIO 0 and 1 outside of gpio.cEric Miao2009-03-091-88/+25
| | | | | | | | | | | | | | | This is part of the work making gpio.c generic enough, the changes include: 1. move IRQ handling of GPIO 0 and 1 outside (and back into irq.c) 2. pxa_init_gpio() accepts a range for muxed GPIO IRQs, and an IRQ number for the muxed GPIOs 3. __gpio_is_occupied() and __gpio_is_inverted() are made inline, and are moved into <mach/gpio.h> instead of generic gpio.c Signed-off-by: Eric Miao <eric.miao@marvell.com>
* [ARM] pxa: move GPIOx_BASE and GPIO register offsets to gpio.cEric Miao2008-12-021-0/+12
| | | | Signed-off-by: Eric Miao <eric.miao@marvell.com>
* [ARM] pxa: add support for additional GPIOs on PXA26xEric Miao2008-12-021-10/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | Original patch from Marek Vasut, the problems with PXA26x are: 1. there are additional 4 GPIOs 86,87,88,89 have their direction bits inverted in GPDR2, as well as their alternate function bits being '1' for their GPIO functionality in GAFRx 2. there is no easy way to decide if the processor is a pxa26x or a pxa250/pxa255 at run-time, so the assumption here is the pxa26x will be treated as one of the pxa25x variants, and board code should have a better knowledge of the processor it is featured Introduce pxa26x_init_irq() for the second purpose, and treat the additional GPIOs > 85 on PXA25x specially. Kconfig option CONFIG_CPU_PXA26x is introduced to optimize the code a bit when PXA26x support isn't needed. Board config options have to select this to enable the support for PXA26x. __gpio_is_inverted() will be optimized way when CONFIG_CPU_PXA26x isn't selected. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Eric Miao <eric.miao@marvell.com>
* Merge branch 'pxa-all' into develRussell King2008-10-091-1/+1
|\ | | | | | | | | | | | | | | | | Conflicts: arch/arm/mach-pxa/Kconfig arch/arm/mach-pxa/corgi.c arch/arm/mach-pxa/include/mach/hardware.h arch/arm/mach-pxa/spitz.c
| * [ARM] 5298/1: Drop desc_handle_irq()Dmitry Baryshkov2008-10-091-1/+1
| | | | | | | | | | | | | | | | desc_handle_irq() was declared as obsolete since long ago. Replace it with generic_handle_irq() Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] Convert asm/io.h to linux/io.hRussell King2008-09-061-1/+1
|/ | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/machRussell King2008-08-071-3/+3
| | | | | | This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Remove asm/hardware.h, use asm/arch/hardware.h insteadRussell King2008-08-071-1/+1
| | | | | | | | | Remove includes of asm/hardware.h in addition to asm/arch/hardware.h. Then, since asm/hardware.h only exists to include asm/arch/hardware.h, update everything to directly include asm/arch/hardware.h and remove asm/hardware.h. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 5003/1: Shut up sparse warningsDmitry Baryshkov2008-04-191-3/+3
| | | | | | | Shut up sparse warnings by making GPIO_IRQ_MASK unisgned Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] pxa: separate GPIOs and their mode definitions to pxa2xx-gpio.heric miao2008-04-191-0/+1
| | | | | | | | | | | | | two reasons: 1. GPIO namings and their mode definitions are conceptually not part of the PXA register definitions 2. this is actually a temporary move in the transition of PXA2xx to use MFP-alike APIs (as what PXA3xx is now doing), so that legacy code will still work and new code can be added in step by step Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] pxa: make pxa_gpio_irq_type() processor genericeric miao2008-04-191-2/+18
| | | | | | | | | | | | | | | | | | The main issue here is that pxa3xx does not have GAFRx registers, access directly to these registers should be avoided for pxa3xx: 1. introduce __gpio_is_occupied() to indicate the GAFRx and GPDRx registers are already configured on pxa{25x,27x} while returns 0 always on pxa3xx 2. pxa_gpio_mode(gpio | GPIO_IN) is replaced directly with assign- ment of GPDRx, the side effect of this change is that the pin _must_ be configured before use, pxa_gpio_irq_type() will not change the pin to GPIO, as this restriction is sane, esp. with the new MFP framework Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] pxa: move GPIO sysdev outside of generic.c into gpio.ceric miao2008-04-191-0/+57
| | | | | Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] pxa: merge assignment of set_wake into pxa_init_{irq,gpio}()eric miao2008-04-191-22/+12
| | | | | | | | | | | | | To further clean up the GPIO and IRQ structure: 1. pxa_init_irq_gpio() and pxa_init_gpio() combines into a single function pxa_init_gpio() 2. assignment of set_wake merged into pxa_init_{irq,gpio}() as an argument Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] pxa: move GPIO IRQ specific code out of irq.c into gpio.ceric miao2008-04-191-0/+183
| | | | | Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] pxa: introduce GPIO_CHIP() macro to clean up the definitionseric miao2008-04-191-48/+18
| | | | | Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* gpiolib support for the PXA architecturePhilipp Zabel2008-02-051-0/+197
This adds gpiolib support for the PXA architecture: - move all GPIO API functions from generic.c into gpio.c - convert the gpio_get/set_value macros into inline functions This makes it easier to hook up GPIOs provided by external chips like ASICs and CPLDs. Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Jean Delvare <khali@linux-fr.org> Cc: Eric Miao <eric.miao@marvell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ Minor ARM fixup from David Brownell folded into this ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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