Commit Graph

12 Commits

Author SHA1 Message Date
Hartley Sweeten
fd015480c2 ARM: 6636/1: ep93xx: default multiplexed gpio ports to gpio mode
The EP93xx C and D GPIO ports are multiplexed with the Keypad Interface
peripheral.  At power-up they default into non-GPIO mode with the Key
Matrix controller enabled so these ports are unusable for GPIO.  Note
that the Keypad Interface peripheral is only available in the EP9307,
EP9312, and EP9315 processor variants.

The keypad support will clear the DeviceConfig bits appropriately to
enable the Keypad Interface when the driver is loaded.  And, when the
driver is unloaded it will set the bits to return the ports to GPIO mode.

To make these ports available for GPIO after power-up on all EP93xx
processor variants, set the KEYS and GONK bits in the DeviceConfig
register.

Similarly, the E, G, and H ports are multiplexed with the IDE Interface
peripheral.  At power-up these also default into non-GPIO mode.  Note
that the IDE peripheral is only available in the EP9312 and EP9315
processor variants.

Since an IDE driver is not even available in mainline, set the EONIDE,
GONIDE, and HONIDE bits in the DeviceConfig register so that these
ports will be available for GPIO use after power-up.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-25 21:18:04 +00:00
Lennert Buytenhek
c0afc91602 ARM: ep93xx: irq_data conversion.
Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
2011-01-13 17:18:29 +01:00
Hartley Sweeten
4742723cbc ARM: 6029/1: ep93xx: gpio.c: local functions should be static
The functions ep93xx_gpio_update_int_params and ep93xx_gpio_int_mask
are not exported and should be static.  This was overlooked when
moving the code from core.c.

Also, change a comment to better indicate what the code is for.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-04-07 21:11:28 +01:00
Hartley Sweeten
d056ab7855 ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c
The GPIO support in core.c handles the interrupt support for GPIO
ports A, B, and F. The gpiolib implementation in gpio.c needs to
access the function ep93xx_gpio_int_mask when a gpio pin is made
an output and ep93xx_gpio_update_int_params in order to update
the registers.

Moving this support from core.c to gpio.c allows making the two
functions static. It also keeps all the GPIO handling together in one
file.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-24 21:08:36 +00:00
Ryan Mallon
595c050d89 [ARM] 5605/1: Fix ep93xx gpio.c headers
Fix a number of build errors in ep93xx gpio.c due to to missing irq.h

Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-17 13:35:58 +01:00
Hartley Sweeten
f04989bbf4 [ARM] 5575/1: ep93xx: Show gpio interrupt type in debugfs output.
ep93xx: Show gpio interrupt type in debugfs output.

EP93xx uses a private implementation for the debugfs output.
Modify this output so it includes the interrupt type when the
gpio is configured as an interrupt

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-06-27 10:41:14 +01:00
Hartley Sweeten
ddf4f3d994 [ARM] 5574/1: ep93xx: gpio.c: fix header includes and __iomem pointers
Fix ep93xx gpio.c header includes and __iomem pointers.

  1. <linux/gpio.h> should be included instead of <asm/gpio.h>
  2. <mach/hardware.h> should be included instead of <mach/ep93xx-regs.h>
  3. data_reg and data_dir_reg in struct ep93xx_gpio_chip should be
     void __iomem pointers not unsigned int

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-06-27 10:41:13 +01:00
Russell King
90bb28b064 Merge branches 'machtypes', 'core', 'ep93xx', 'ks8695', 'netdev' and 'sa1100' into devel 2008-10-09 21:31:54 +01:00
Hartley Sweeten
7a1f370118 [ARM] 5243/1: ep93xx: bugfix, GPIO ports C and F are swapped
In the GPIOLIB support for EP93xx ports C anf F are swapped. This
patch correct it.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-07 17:39:36 +01:00
Russell King
fced80c735 [ARM] Convert asm/io.h to linux/io.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-06 12:10:45 +01:00
Russell King
a09e64fbc0 [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
This just leaves include/asm-arm/plat-* to deal with.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07 09:55:48 +01:00
Ryan Mallon
b685004f8d [ARM] 4988/1: Add GPIO lib support to the EP93xx
Adds support for the generic GPIO lib to the EP93xx family. The gpio
handling code has been moved from core.c to a new file called gpio.c.
The GPIO based IRQ code has not been changed.

Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-19 14:01:43 +01:00