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path: root/drivers/gpio/gpio-xilinx.c
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2015-07-16gpio/xilinx: Use correct address when setting initial values.Raphaël Teysseyre1-2/+2
xgpio_save_regs() is used in this driver to setup the initial values of the registers in the hardware. The relevant registers at that time are: 0x0 -> channel 0 data (32 bits, one for each GPIO on this channel). 0x4 -> channel 0 tri, controls in/out status for each GPIO of this channel. 0x8 -> channel 1 data 0xC -> channel 1 tri gpio-xilinx.c defines these: XGPIO_DATA_OFFSET (0x0) XGPIO_TRI_OFFSET (0x4) XGPIO_CHANNEL_OFFSET 0x8 Before this patch, the "data" register value of channel 1 was written at 0x4 intead of 0x8 (overwriting the channel 0 "tri" register), and the "tri" register value for channel 1 was written at 0x8 instead of 0xC. Signed-off-by: Raphaël Teysseyre <[email protected]> Reviewed-by: Michal Simek <[email protected]> Reviewed-by: Alexandre Courbot <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2015-05-12gpio: xilinx: Fix kernel-doc warningsMichal Simek1-1/+3
Fix kernel-doc format: - Add gpio-width description - Remove additional "inited" variable description - Add return value description - xgpio_remove Signed-off-by: Michal Simek <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2015-01-15gpio/xilinx: Use of_mm_gpiochip_removeRicardo Ribalda Delgado1-4/+1
Use the newly created of_mm_gpiochip_remove function for cleaning up of_mm_gpiochip_add Suggested-by: Alexandre Courbot <[email protected]> Signed-off-by: Ricardo Ribalda Delgado <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2015-01-15gpio/xilinx: Create a single gpio chip on dual coresRicardo Ribalda Delgado1-108/+109
Currently, we had two gpio chips on cores configured as dual. This lead to mapping the same memory region twice and duplicating the init and remove code. This patch creates a single gpiochip for single and dual cores. Suggested-by: Alexandre Courbot <[email protected]> Signed-off-by: Ricardo Ribalda Delgado <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2015-01-15gpio/xilinx: Fix kernel-docRicardo Ribalda Delgado1-16/+21
Some documentation were not following the kernel-doc format. Backporting patch from Xilinx git repository. Suggested-by: Michal Simek <[email protected]> Acked-by: Michal Simek <[email protected]> Acked-by: Alexandre Courbot <[email protected]> Signed-off-by: Ricardo Ribalda Delgado <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2015-01-15gpio/xilinx: Add support for X86 ArchRicardo Ribalda Delgado1-1/+1
Core can be accessed via PCIe on X86 platform. This patch also allows the driver to be used as module. Acked-by: Michal Simek <[email protected]> Signed-off-by: Ricardo Ribalda Delgado <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2015-01-15gpio/xilinx: Convert the driver to platform device interfaceRicardo Ribalda Delgado1-17/+66
This way we do not need to transverse the device tree manually and we support hot plugged devices. Also Implement remove callback so the driver can be unloaded Acked-by: Michal Simek <[email protected]> Signed-off-by: Ricardo Ribalda Delgado <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2015-01-15gpio/xilinx: Remove offset propertyRicardo Ribalda Delgado1-23/+11
Instead of calculating the register offset per call, pre-calculate it on probe time. Acked-by: Alexandre Courbot <[email protected]> Acked-by: Michal Simek <[email protected]> Signed-off-by: Ricardo Ribalda Delgado <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2014-09-24gpio: Fix ngpio in gpio-xilinx driverGernot Vormayr1-12/+15
If one adds gpio-controller; to the chip in the devicetree, then initialization fails with 'gpiochip_find_base: cannot find free range', because ngpio is 0. This patch fixes the bug. This version includes the suggestions from Linus Walleij. Tested on ml507 board. Signed-off-by: Gernot Vormayr <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2014-05-09gpio: xilinx: Make of_device_id array constJingoo Han1-1/+1
Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han <[email protected]> Reviewed-by: Michal Simek <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2013-06-17GPIO: xilinx: Use BIT macroMichal Simek1-6/+6
Use BIT macro from linux/bitops.h. Signed-off-by: Michal Simek <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2013-06-17GPIO: xilinx: Use __raw_readl/__raw_writel IO functionsMichal Simek1-2/+7
This driver can be used on Xilinx ARM Zynq platform where in_be32/out_be32 functions are not implemented. Use __raw_readl/__raw_writel functions which are implemented on Microblaze and PowerPC. For ARM readl/writel functions are used instead. The correct way how to implement this is to detect endians directly on IP. But for the gpio case without interrupt connected(it means without interrupt logic) there are just 2 registers data and tristate where auto detection can't be done. Signed-off-by: Michal Simek <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2013-06-17GPIO: xilinx: Add support for dual channelMichal Simek1-12/+91
Supporting the second channel in the driver. Offset is 0x8 and both channnels share the same IRQ. Signed-off-by: Michal Simek <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2013-06-17GPIO: xilinx: Simplify driver probe functionMichal Simek1-14/+10
Simplification is done by using OF helper function which increase readability of code and remove (if (var) var = be32_to_cpup;) assignment. Signed-off-by: Michal Simek <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2012-11-28gpio: remove use of __devinitdataBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devinitdata is no longer needed. Signed-off-by: Bill Pemberton <[email protected]> Cc: Grant Likely <[email protected]> Acked-by: Linus Walleij <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2012-11-28gpio: remove use of __devinitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <[email protected]> Cc: Grant Likely <[email protected]> Cc: Peter Tyser <[email protected]> Cc: Santosh Shilimkar <[email protected]> Cc: Kevin Hilman <[email protected]> Acked-by: Linus Walleij <[email protected]> Acked-by: Mark Brown <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-12-12gpiolib: output basic details and consolidate gpio device driversGrant Likely1-1/+0
This patch adds a kernel message, containing GPIO range and device name on successful device registration, and removes duplicate messages from the following drivers: * gpio-adp5588 * gpio-bt8xx * gpio-cs5535 * gpio-janz-ttl * gpio-nomadik * gpio-pcf857x * gpio-xilinx * drivers/of/gpio.c Signed-off-by: Hartmut Knaack <[email protected]> [[email protected]: squashed 2 patches together] Signed-off-by: Grant Likely <[email protected]>
2011-10-31drivers/gpio: Fix drivers who are implicit users of module.hPaul Gortmaker1-0/+1
A pending cleanup will mean that module.h won't be implicitly everywhere anymore. Make sure the modular drivers in gpio are actually calling out for <module.h> explicitly in advance. Signed-off-by: Paul Gortmaker <[email protected]>
2011-06-06gpio: reorganize driversGrant Likely1-0/+233
Sort the gpio makefile and enforce the naming convention gpio-*.c for gpio drivers. v2: cleaned up filenames in Kconfig and comment blocks v3: fixup use of BASIC_MMIO to GENERIC_GPIO for mxc Signed-off-by: Grant Likely <[email protected]>
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