[ARM] 5584/1: nomadik: add gpio driver and devices

Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 71 insertions, 0 deletions

diff --git a/arch/arm/mach-nomadik/include/mach/gpio.h b/arch/arm/mach-nomadik/include/mach/gpio.h
new file mode 100644
index 00000000000..61577c9f9a7
--- /dev/null
+++ b/arch/arm/mach-nomadik/include/mach/gpio.h
@@ -0,0 +1,71 @@
+/*
+ * Structures and registers for GPIO access in the Nomadik SoC
+ *
+ * Copyright (C) 2008 STMicroelectronics
+ *     Author: Prafulla WADASKAR <prafulla.wadaskar@st.com>
+ * Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_ARCH_GPIO_H
+#define __ASM_ARCH_GPIO_H
+
+#include <asm-generic/gpio.h>
+
+/*
+ * These currently cause a function call to happen, they may be optimized
+ * if needed by adding cpu-specific defines to identify blocks
+ * (see mach-pxa/include/mach/gpio.h as an example using GPLR etc)
+ */
+#define gpio_get_value  __gpio_get_value
+#define gpio_set_value  __gpio_set_value
+#define gpio_cansleep   __gpio_cansleep
+#define gpio_to_irq     __gpio_to_irq
+
+/*
+ * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving
+ * the "gpio" namespace for generic and cross-machine functions
+ */
+
+/* Register in the logic block */
+#define NMK_GPIO_DAT    0x00
+#define NMK_GPIO_DATS   0x04
+#define NMK_GPIO_DATC   0x08
+#define NMK_GPIO_PDIS   0x0c
+#define NMK_GPIO_DIR    0x10
+#define NMK_GPIO_DIRS   0x14
+#define NMK_GPIO_DIRC   0x18
+#define NMK_GPIO_SLPC   0x1c
+#define NMK_GPIO_AFSLA  0x20
+#define NMK_GPIO_AFSLB  0x24
+
+#define NMK_GPIO_RIMSC  0x40
+#define NMK_GPIO_FIMSC  0x44
+#define NMK_GPIO_IS     0x48
+#define NMK_GPIO_IC     0x4c
+#define NMK_GPIO_RWIMSC 0x50
+#define NMK_GPIO_FWIMSC 0x54
+#define NMK_GPIO_WKS    0x58
+
+/* Alternate functions: function C is set in hw by setting both A and B */
+#define NMK_GPIO_ALT_GPIO       0
+#define NMK_GPIO_ALT_A  1
+#define NMK_GPIO_ALT_B  2
+#define NMK_GPIO_ALT_C  (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B)
+
+extern int nmk_gpio_set_mode(int gpio, int gpio_mode);
+extern int nmk_gpio_get_mode(int gpio);
+
+/*
+ * Platform data to register a block: only the initial gpio/irq number.
+ */
+struct nmk_gpio_platform_data {
+        char *name;
+        int first_gpio;
+        int first_irq;
+        int parent_irq;
+};
+
+#endif /* __ASM_ARCH_GPIO_H */