gpio: driver for 42 AB8500 GPIO pins

To get rid of port expanders, the free GPIOs of ab8500
can be used. There are 42 GPIO pins. Out of which 16
are interrupt capable.This patch implements 16 virtual
IRQ mapped to 16 interrupt capable AB8500 GPIOs.

Signed-off-by: Bibek Basu <bibek.basu@stericsson.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
[Renamed header file as per MFD structure]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

2 files changed, 62 insertions, 0 deletions

diff --git a/include/linux/mfd/ab8500.h b/include/linux/mfd/ab8500.h
index 6e4f77ef4d20..b31843075198 100644
--- a/include/linux/mfd/ab8500.h
+++ b/include/linux/mfd/ab8500.h
@@ -74,6 +74,45 @@
 #define AB8500_INT_ACC_DETECT_21DB_F    37
 #define AB8500_INT_ACC_DETECT_21DB_R    38
 #define AB8500_INT_GP_SW_ADC_CONV_END   39
+#define AB8500_INT_ACC_DETECT_1DB_F     33
+#define AB8500_INT_ACC_DETECT_1DB_R     34
+#define AB8500_INT_ACC_DETECT_22DB_F    35
+#define AB8500_INT_ACC_DETECT_22DB_R    36
+#define AB8500_INT_ACC_DETECT_21DB_F    37
+#define AB8500_INT_ACC_DETECT_21DB_R    38
+#define AB8500_INT_GP_SW_ADC_CONV_END   39
+#define AB8500_INT_GPIO6R               40
+#define AB8500_INT_GPIO7R               41
+#define AB8500_INT_GPIO8R               42
+#define AB8500_INT_GPIO9R               43
+#define AB8500_INT_GPIO10R              44
+#define AB8500_INT_GPIO11R              45
+#define AB8500_INT_GPIO12R              46
+#define AB8500_INT_GPIO13R              47
+#define AB8500_INT_GPIO24R              48
+#define AB8500_INT_GPIO25R              49
+#define AB8500_INT_GPIO36R              50
+#define AB8500_INT_GPIO37R              51
+#define AB8500_INT_GPIO38R              52
+#define AB8500_INT_GPIO39R              53
+#define AB8500_INT_GPIO40R              54
+#define AB8500_INT_GPIO41R              55
+#define AB8500_INT_GPIO6F               56
+#define AB8500_INT_GPIO7F               57
+#define AB8500_INT_GPIO8F               58
+#define AB8500_INT_GPIO9F               59
+#define AB8500_INT_GPIO10F              60
+#define AB8500_INT_GPIO11F              61
+#define AB8500_INT_GPIO12F              62
+#define AB8500_INT_GPIO13F              63
+#define AB8500_INT_GPIO24F              64
+#define AB8500_INT_GPIO25F              65
+#define AB8500_INT_GPIO36F              66
+#define AB8500_INT_GPIO37F              67
+#define AB8500_INT_GPIO38F              68
+#define AB8500_INT_GPIO39F              69
+#define AB8500_INT_GPIO40F              70
+#define AB8500_INT_GPIO41F              71
 #define AB8500_INT_ADP_SOURCE_ERROR     72
 #define AB8500_INT_ADP_SINK_ERROR       73
 #define AB8500_INT_ADP_PROBE_PLUG       74
@@ -141,6 +180,7 @@ struct ab8500 {
 
 struct regulator_reg_init;
 struct regulator_init_data;
+struct ab8500_gpio_platform_data;
 
 /**
  * struct ab8500_platform_data - AB8500 platform data
@@ -158,6 +198,7 @@ struct ab8500_platform_data {
         struct ab8500_regulator_reg_init *regulator_reg_init;
         int num_regulator;
         struct regulator_init_data *regulator;
+        struct ab8500_gpio_platform_data *gpio;
 };
 
 extern int __devinit ab8500_init(struct ab8500 *ab8500);
diff --git a/include/linux/mfd/ab8500/gpio.h b/include/linux/mfd/ab8500/gpio.h
new file mode 100644
index 000000000000..488a8c920a29
--- /dev/null
+++ b/include/linux/mfd/ab8500/gpio.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright ST-Ericsson 2010.
+ *
+ * Author: Bibek Basu <bibek.basu@stericsson.com>
+ * Licensed under GPLv2.
+ */
+
+#ifndef _AB8500_GPIO_H
+#define _AB8500_GPIO_H
+
+/*
+ * Platform data to register a block: only the initial gpio/irq number.
+ */
+
+struct ab8500_gpio_platform_data {
+        int gpio_base;
+        u32 irq_base;
+        u8  config_reg[7];
+};
+
+#endif /* _AB8500_GPIO_H */