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Commit 3ef374a2 authored by Bibek Basu's avatar Bibek Basu Committed by Linus Walleij
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mach-ux500: board support for AB8500 GPIO driver 



This is the board support patch for ab8500 gpio driver
on mach-ux500.Patch implements 16 virtual
IRQ mapped to 16 interrupt capable AB8500 GPIOs.

Signed-off-by: default avatarBibek Basu <bibek.basu@stericsson.com>
[Modify for header file placement]
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 0cb3fcd7

arch/arm/mach-ux500/board-mop500.c

+24 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ 
#include <linux/mfd/ab8500.h>

#include <linux/regulator/ab8500.h>

#include <linux/mfd/tc3589x.h>

#include <linux/mfd/ab8500/gpio.h>

#include <linux/leds-lp5521.h>

#include <linux/input.h>

#include <linux/gpio_keys.h>
@@ -42,10 +43,33 @@ 
#include "board-mop500.h"

#include "board-mop500-regulators.h"



static struct ab8500_gpio_platform_data ab8500_gpio_pdata = {

	.gpio_base		= MOP500_AB8500_GPIO(0),

	.irq_base		= MOP500_AB8500_VIR_GPIO_IRQ_BASE,

	/* config_reg is the initial configuration of ab8500 pins.

	 * The pins can be configured as GPIO or alt functions based

	 * on value present in GpioSel1 to GpioSel6 and AlternatFunction

	 * register. This is the array of 7 configuration settings.

	 * One has to compile time decide these settings. Below is the

	 * explaination of these setting

	 * GpioSel1 = 0x00 => Pins GPIO1 to GPIO8 are not used as GPIO

	 * GpioSel2 = 0x1E => Pins GPIO10 to GPIO13 are configured as GPIO

	 * GpioSel3 = 0x80 => Pin GPIO24 is configured as GPIO

	 * GpioSel4 = 0x01 => Pin GPIo25 is configured as GPIO

	 * GpioSel5 = 0x7A => Pins GPIO34, GPIO36 to GPIO39 are conf as GPIO

	 * GpioSel6 = 0x00 => Pins GPIO41 & GPIo42 are not configured as GPIO

	 * AlternaFunction = 0x00 => If Pins GPIO10 to 13 are not configured

	 * as GPIO then this register selectes the alternate fucntions

	 */

	.config_reg		= {0x00, 0x1E, 0x80, 0x01,

					0x7A, 0x00, 0x00},

};



static struct ab8500_platform_data ab8500_platdata = {

	.irq_base	= MOP500_AB8500_IRQ_BASE,

	.regulator	= ab8500_regulators,

	.num_regulator	= ARRAY_SIZE(ab8500_regulators),

	.gpio		= &ab8500_gpio_pdata,

};



static struct resource ab8500_resources[] = {

arch/arm/mach-ux500/board-mop500.h

+4 −0
Original line number Diff line number Diff line
@@ -27,6 +27,10 @@ 
#define GPIO_BU21013_CS			MOP500_EGPIO(13)

#define GPIO_SDMMC_EN			MOP500_EGPIO(17)

#define GPIO_SDMMC_1V8_3V_SEL		MOP500_EGPIO(18)

#define MOP500_EGPIO_END		MOP500_EGPIO(24)



/* GPIOs on the AB8500 mixed-signals circuit */

#define MOP500_AB8500_GPIO(x)		(MOP500_EGPIO_END + (x))



struct i2c_board_info;

arch/arm/mach-ux500/include/mach/irqs-board-mop500.h

+13 −2
Original line number Diff line number Diff line
@@ -35,7 +35,18 @@ 
#define MOP500_STMPE1601_IRQBASE        MOP500_EGPIO_IRQ_END

#define MOP500_STMPE1601_IRQ(x)         (MOP500_STMPE1601_IRQBASE + (x))



#define MOP500_NR_IRQS          MOP500_STMPE1601_IRQ(STMPE_NR_INTERNAL_IRQS)

#define MOP500_STMPE1601_IRQ_END	\

	MOP500_STMPE1601_IRQ(STMPE_NR_INTERNAL_IRQS)



/* AB8500 virtual gpio IRQ */

#define AB8500_VIR_GPIO_NR_IRQS			16



#define MOP500_AB8500_VIR_GPIO_IRQ_BASE		\

	MOP500_STMPE1601_IRQ_END

#define MOP500_AB8500_VIR_GPIO_IRQ_END		\

	(MOP500_AB8500_VIR_GPIO_IRQ_BASE + AB8500_VIR_GPIO_NR_IRQS)



#define MOP500_NR_IRQS		MOP500_AB8500_VIR_GPIO_IRQ_END



#define MOP500_IRQ_END		MOP500_NR_IRQS