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Date: Fri, 18 Mar 2011 09:07:49 +0530
From: Bibek Basu <bibek.basu@...ricsson.com>
To: <linus.walleij@...ricsson.com>, <grant.likely@...retlab.ca>
Cc: <linux-kernel@...r.kernel.org>, <bibek.basu@...ricsson.com>
Subject: [PATCH] AB8500 GPIO : 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: Bibek Basu <bibek.basu@...ricsson.com>
---
arch/arm/mach-ux500/board-mop500.c | 24 ++++++++++++++++++++
arch/arm/mach-ux500/board-mop500.h | 3 +-
.../mach-ux500/include/mach/irqs-board-mop500.h | 15 ++++++++++-
3 files changed, 39 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index 67d9c63..69ee789 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -21,6 +21,7 @@
#include <linux/spi/spi.h>
#include <linux/mfd/ab8500.h>
#include <linux/mfd/tc3589x.h>
+#include <linux/mfd/ab8500/ab8500-gpio.h>
#include <linux/leds-lp5521.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
@@ -102,10 +103,33 @@ static pin_cfg_t mop500_pins[] = {
GPIO267_USB_DAT0 | PIN_PULL_DOWN,
};
+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[] = {
diff --git a/arch/arm/mach-ux500/board-mop500.h b/arch/arm/mach-ux500/board-mop500.h
index 19b6c27..d00ea06 100644
--- a/arch/arm/mach-ux500/board-mop500.h
+++ b/arch/arm/mach-ux500/board-mop500.h
@@ -8,7 +8,8 @@
#define __BOARD_MOP500_H
#define MOP500_EGPIO(x) (NOMADIK_NR_GPIO + (x))
-
+#define MOP500_EGPIO_END MOP500_EGPIO(24)
+#define MOP500_AB8500_GPIO(x) (MOP500_EGPIO_END + (x))
/* GPIOs on the TC35892 expander */
#define GPIO_SDMMC_CD MOP500_EGPIO(3)
#define GPIO_PROX_SENSOR MOP500_EGPIO(7)
diff --git a/arch/arm/mach-ux500/include/mach/irqs-board-mop500.h b/arch/arm/mach-ux500/include/mach/irqs-board-mop500.h
index 7cdeb2a..97ef55f 100644
--- a/arch/arm/mach-ux500/include/mach/irqs-board-mop500.h
+++ b/arch/arm/mach-ux500/include/mach/irqs-board-mop500.h
@@ -35,9 +35,20 @@
#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)
-#define MOP500_IRQ_END MOP500_NR_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
#if MOP500_IRQ_END > IRQ_BOARD_END
#undef IRQ_BOARD_END
--
1.7.2.dirty
--
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