omap: Fix functions for dynamic remuxing of pins

Make the omap_mux_read and write available for board code,
and rename omap_mux_set_board_signals into omap_mux_write_array.
Also add the related prototypes and comments into mux.h.

In some cases we want to change the signals dynamically,
mostly for power management.

Note that we cannot use the signal names as they are set
__init to save memory.

Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 11 insertions, 11 deletions

diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c
index 40ea9fd4211d..3f59bd12cbbf 100644
--- a/arch/arm/mach-omap2/mux.c
+++ b/arch/arm/mach-omap2/mux.c
@@ -51,7 +51,7 @@ struct omap_mux_entry {
 static unsigned long mux_phys;
 static void __iomem *mux_base;
 
-static inline u16 omap_mux_read(u16 reg)
+u16 omap_mux_read(u16 reg)
 {
         if (cpu_is_omap24xx())
                 return __raw_readb(mux_base + reg);
@@ -59,7 +59,7 @@ static inline u16 omap_mux_read(u16 reg)
                 return __raw_readw(mux_base + reg);
 }
 
-static inline void omap_mux_write(u16 val, u16 reg)
+void omap_mux_write(u16 val, u16 reg)
 {
         if (cpu_is_omap24xx())
                 __raw_writeb(val, mux_base + reg);
@@ -67,6 +67,14 @@ static inline void omap_mux_write(u16 val, u16 reg)
                 __raw_writew(val, mux_base + reg);
 }
 
+void omap_mux_write_array(struct omap_board_mux *board_mux)
+{
+        while (board_mux->reg_offset !=  OMAP_MUX_TERMINATOR) {
+                omap_mux_write(board_mux->value, board_mux->reg_offset);
+                board_mux++;
+        }
+}
+
 #if defined(CONFIG_ARCH_OMAP24XX) && defined(CONFIG_OMAP_MUX)
 
 static struct omap_mux_cfg arch_mux_cfg;
@@ -833,14 +841,6 @@ static void __init omap_mux_set_cmdline_signals(void)
         kfree(options);
 }
 
-static void __init omap_mux_set_board_signals(struct omap_board_mux *board_mux)
-{
-        while (board_mux->reg_offset !=  OMAP_MUX_TERMINATOR) {
-                omap_mux_write(board_mux->value, board_mux->reg_offset);
-                board_mux++;
-        }
-}
-
 static int __init omap_mux_copy_names(struct omap_mux *src,
                                         struct omap_mux *dst)
 {
@@ -1004,7 +1004,7 @@ int __init omap_mux_init(u32 mux_pbase, u32 mux_size,
 
 #ifdef CONFIG_OMAP_MUX
         omap_mux_set_cmdline_signals();
-        omap_mux_set_board_signals(board_mux);
+        omap_mux_write_array(board_mux);
 #endif
 
         return 0;