ARM: OMAP: Allow registering pin mux function
This patch changes pin multiplexing init to allow registering
custom function. The omap_cfg_reg() func will be split into
omap processor specific functions in later patch.
This is done to make adding omap3 pin multiplexing easier.
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/plat-omap/mux.c b/arch/arm/plat-omap/mux.c
index 75211f2..d881379 100644
--- a/arch/arm/plat-omap/mux.c
+++ b/arch/arm/plat-omap/mux.c
@@ -36,17 +36,17 @@
#define OMAP24XX_PULL_ENA (1 << 3)
#define OMAP24XX_PULL_UP (1 << 4)
-static struct pin_config * pin_table;
-static unsigned long pin_table_sz;
+static struct omap_mux_cfg *mux_cfg;
-extern struct pin_config * omap730_pins;
-extern struct pin_config * omap1xxx_pins;
-extern struct pin_config * omap24xx_pins;
-
-int __init omap_mux_register(struct pin_config * pins, unsigned long size)
+int __init omap_mux_register(struct omap_mux_cfg *arch_mux_cfg)
{
- pin_table = pins;
- pin_table_sz = size;
+ if (!arch_mux_cfg || !arch_mux_cfg->pins || arch_mux_cfg->size == 0
+ || !arch_mux_cfg->cfg_reg) {
+ printk(KERN_ERR "Invalid pin table\n");
+ return -EINVAL;
+ }
+
+ mux_cfg = arch_mux_cfg;
return 0;
}
@@ -64,17 +64,19 @@
pull_orig = 0, pull = 0;
unsigned int mask, warn = 0;
- if (!pin_table)
- BUG();
+ if (mux_cfg == NULL) {
+ printk(KERN_ERR "Pin mux table not initialized\n");
+ return -ENODEV;
+ }
- if (index >= pin_table_sz) {
+ if (index >= mux_cfg->size) {
printk(KERN_ERR "Invalid pin mux index: %lu (%lu)\n",
- index, pin_table_sz);
+ index, mux_cfg->size);
dump_stack();
return -ENODEV;
}
- cfg = (struct pin_config *)&pin_table[index];
+ cfg = (struct pin_config *)&mux_cfg->pins[index];
if (cpu_is_omap24xx()) {
u8 reg = 0;