summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-omap2/mux.c
diff options
context:
space:
mode:
authorH. Peter Anvin <hpa@zytor.com>2010-04-29 16:53:17 -0700
committerH. Peter Anvin <hpa@zytor.com>2010-04-29 16:53:17 -0700
commitd9c5841e22231e4e49fd0a1004164e6fce59b7a6 (patch)
treee1f589c46b3ff79bbe7b1b2469f6362f94576da6 /arch/arm/mach-omap2/mux.c
parentb701a47ba48b698976fb2fe05fb285b0edc1d26a (diff)
parent5967ed87ade85a421ef814296c3c7f182b08c225 (diff)
Merge branch 'x86/asm' into x86/atomic
Merge reason: Conflict between LOCK_PREFIX_HERE and relative alternatives pointers Resolved Conflicts: arch/x86/include/asm/alternative.h arch/x86/kernel/alternative.c Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/arm/mach-omap2/mux.c')
-rw-r--r--arch/arm/mach-omap2/mux.c78
1 files changed, 56 insertions, 22 deletions
diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c
index e071b3fd187..8b3d26935a3 100644
--- a/arch/arm/mach-omap2/mux.c
+++ b/arch/arm/mach-omap2/mux.c
@@ -26,6 +26,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/ctype.h>
@@ -51,7 +52,7 @@ 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 +60,7 @@ 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);
@@ -67,7 +68,15 @@ static inline void omap_mux_write(u16 val, u16 reg)
__raw_writew(val, mux_base + reg);
}
-#if defined(CONFIG_ARCH_OMAP24XX) && defined(CONFIG_OMAP_MUX)
+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_OMAP2) && defined(CONFIG_OMAP_MUX)
static struct omap_mux_cfg arch_mux_cfg;
@@ -361,7 +370,7 @@ int __init omap2_mux_init(void)
/*----------------------------------------------------------------------------*/
-#ifdef CONFIG_ARCH_OMAP34XX
+#ifdef CONFIG_ARCH_OMAP3
static LIST_HEAD(muxmodes);
static DEFINE_MUTEX(muxmode_mutex);
@@ -478,7 +487,7 @@ int __init omap_mux_init_signal(char *muxname, int val)
static inline void omap_mux_decode(struct seq_file *s, u16 val)
{
char *flags[OMAP_MUX_MAX_NR_FLAGS];
- char mode[14];
+ char mode[sizeof("OMAP_MUX_MODE") + 1];
int i = -1;
sprintf(mode, "OMAP_MUX_MODE%d", val & 0x7);
@@ -545,6 +554,7 @@ static int omap_mux_dbg_board_show(struct seq_file *s, void *unused)
if (!m0_name)
continue;
+ /* REVISIT: Needs to be updated if mode0 names get longer */
for (i = 0; i < OMAP_MUX_DEFNAME_LEN; i++) {
if (m0_name[i] == '\0') {
m0_def[i] = m0_name[i];
@@ -833,14 +843,6 @@ 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)
{
@@ -960,7 +962,12 @@ static void __init omap_mux_init_list(struct omap_mux *superset)
while (superset->reg_offset != OMAP_MUX_TERMINATOR) {
struct omap_mux *entry;
-#ifndef CONFIG_OMAP_MUX
+#ifdef CONFIG_OMAP_MUX
+ if (!superset->muxnames || !superset->muxnames[0]) {
+ superset++;
+ continue;
+ }
+#else
/* Skip pins that are not muxed as GPIO by bootloader */
if (!OMAP_MODE_GPIO(omap_mux_read(superset->reg_offset))) {
superset++;
@@ -977,6 +984,38 @@ static void __init omap_mux_init_list(struct omap_mux *superset)
}
}
+#ifdef CONFIG_OMAP_MUX
+
+static void omap_mux_init_package(struct omap_mux *superset,
+ struct omap_mux *package_subset,
+ struct omap_ball *package_balls)
+{
+ if (package_subset)
+ omap_mux_package_fixup(package_subset, superset);
+ if (package_balls)
+ omap_mux_package_init_balls(package_balls, superset);
+}
+
+static void omap_mux_init_signals(struct omap_board_mux *board_mux)
+{
+ omap_mux_set_cmdline_signals();
+ omap_mux_write_array(board_mux);
+}
+
+#else
+
+static void omap_mux_init_package(struct omap_mux *superset,
+ struct omap_mux *package_subset,
+ struct omap_ball *package_balls)
+{
+}
+
+static void omap_mux_init_signals(struct omap_board_mux *board_mux)
+{
+}
+
+#endif
+
int __init omap_mux_init(u32 mux_pbase, u32 mux_size,
struct omap_mux *superset,
struct omap_mux *package_subset,
@@ -993,17 +1032,12 @@ int __init omap_mux_init(u32 mux_pbase, u32 mux_size,
return -ENODEV;
}
-#ifdef CONFIG_OMAP_MUX
- omap_mux_package_fixup(package_subset, superset);
- omap_mux_package_init_balls(package_balls, superset);
- omap_mux_set_cmdline_signals();
- omap_mux_set_board_signals(board_mux);
-#endif
-
+ omap_mux_init_package(superset, package_subset, package_balls);
omap_mux_init_list(superset);
+ omap_mux_init_signals(board_mux);
return 0;
}
-#endif /* CONFIG_ARCH_OMAP34XX */
+#endif /* CONFIG_ARCH_OMAP3 */