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authorSamuel Ortiz <sameo@openedhand.com>2008-06-20 11:09:51 +0200
committerSamuel Ortiz <samuel@sortiz.org>2008-07-20 19:55:00 +0200
commit3b26bf17226f66bfd6cd4e36ac81f83fe994043a (patch)
treef619c0570a31cbb0cdd2e3c148bd66bb962b7b74 /include/linux/mfd
parent1effe5bc6cfbac4506d7944d68dadbd29ad62645 (diff)
mfd: New asic3 gpio configuration code
The ASIC3 GPIO configuration code is a bit obscure and hardly readable. This patch changes it so that it is now more readable and understandable, by being more explicit. Signed-off-by: Samuel Ortiz <sameo@openedhand.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/mfd')
-rw-r--r--include/linux/mfd/asic3.h34
1 files changed, 24 insertions, 10 deletions
diff --git a/include/linux/mfd/asic3.h b/include/linux/mfd/asic3.h
index b1c365800ab..7e47cfb0c44 100644
--- a/include/linux/mfd/asic3.h
+++ b/include/linux/mfd/asic3.h
@@ -8,7 +8,7 @@
* published by the Free Software Foundation.
*
* Copyright 2001 Compaq Computer Corporation.
- * Copyright 2007 OpendHand.
+ * Copyright 2007-2008 OpenedHand Ltd.
*/
#ifndef __ASIC3_H__
@@ -17,15 +17,8 @@
#include <linux/types.h>
struct asic3_platform_data {
- struct {
- u32 dir;
- u32 init;
- u32 sleep_mask;
- u32 sleep_out;
- u32 batt_fault_out;
- u32 sleep_conf;
- u32 alt_function;
- } gpio_a, gpio_b, gpio_c, gpio_d;
+ u16 *gpio_config;
+ unsigned int gpio_config_num;
unsigned int bus_shift;
@@ -86,6 +79,27 @@ struct asic3_platform_data {
*/
#define ASIC3_GPIO_Status 0x30 /* R Pin status */
+/*
+ * ASIC3 GPIO config
+ *
+ * Bits 0..6 gpio number
+ * Bits 7..13 Alternate function
+ * Bit 14 Direction
+ * Bit 15 Initial value
+ *
+ */
+#define ASIC3_CONFIG_GPIO_PIN(config) ((config) & 0x7f)
+#define ASIC3_CONFIG_GPIO_ALT(config) (((config) & (0x7f << 7)) >> 7)
+#define ASIC3_CONFIG_GPIO_DIR(config) ((config & (1 << 14)) >> 14)
+#define ASIC3_CONFIG_GPIO_INIT(config) ((config & (1 << 15)) >> 15)
+#define ASIC3_CONFIG_GPIO(gpio, alt, dir, init) (((gpio) & 0x7f) \
+ | (((alt) & 0x7f) << 7) | (((dir) & 0x1) << 14) \
+ | (((init) & 0x1) << 15))
+#define ASIC3_CONFIG_GPIO_DEFAULT(gpio, dir, init) \
+ ASIC3_CONFIG_GPIO((gpio), 0, (dir), (init))
+#define ASIC3_CONFIG_GPIO_DEFAULT_OUT(gpio, init) \
+ ASIC3_CONFIG_GPIO((gpio), 0, 1, (init))
+
#define ASIC3_SPI_Base 0x0400
#define ASIC3_SPI_Control 0x0000
#define ASIC3_SPI_TxData 0x0004