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authorDavid S. Miller <davem@davemloft.net>2008-10-29 23:18:41 -0700
committerDavid S. Miller <davem@davemloft.net>2008-12-04 09:16:44 -0800
commit86821d18f9d8fd42fa3180ad3703d491aecc52d9 (patch)
tree003f664c4bbe560968207a0067340fa3728e9b15 /arch/sparc64
parent6d1e428a4e02761250c6498fe63657444fdfc3d5 (diff)
sparc64: Rework auxio driver to save some text space.
Use common functions instead of inlining and duplicating logic over and over to handle the SBUS vs. EBUS cases. Before: text data bss dec hex filename 715 568 16 1299 513 arch/sparc64/kernel/auxio.o After: text data bss dec hex filename 631 568 16 1215 4bf arch/sparc64/kernel/auxio.o Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64')
-rw-r--r--arch/sparc64/kernel/auxio.c70
1 files changed, 26 insertions, 44 deletions
diff --git a/arch/sparc64/kernel/auxio.c b/arch/sparc64/kernel/auxio.c
index 858beda8652..8b67347d422 100644
--- a/arch/sparc64/kernel/auxio.c
+++ b/arch/sparc64/kernel/auxio.c
@@ -27,73 +27,55 @@ enum auxio_type {
static enum auxio_type auxio_devtype = AUXIO_TYPE_NODEV;
static DEFINE_SPINLOCK(auxio_lock);
-static void __auxio_sbus_set(u8 bits_on, u8 bits_off)
+static void __auxio_rmw(u8 bits_on, u8 bits_off, int ebus)
{
if (auxio_register) {
- unsigned char regval;
unsigned long flags;
- unsigned char newval;
+ u8 regval, newval;
spin_lock_irqsave(&auxio_lock, flags);
- regval = sbus_readb(auxio_register);
+ regval = (ebus ?
+ (u8) readl(auxio_register) :
+ sbus_readb(auxio_register));
newval = regval | bits_on;
newval &= ~bits_off;
- newval &= ~AUXIO_AUX1_MASK;
- sbus_writeb(newval, auxio_register);
+ if (!ebus)
+ newval &= ~AUXIO_AUX1_MASK;
+ if (ebus)
+ writel((u32) newval, auxio_register);
+ else
+ sbus_writeb(newval, auxio_register);
spin_unlock_irqrestore(&auxio_lock, flags);
}
}
-static void __auxio_ebus_set(u8 bits_on, u8 bits_off)
+static void __auxio_set_bit(u8 bit, int on, int ebus)
{
- if (auxio_register) {
- unsigned char regval;
- unsigned long flags;
- unsigned char newval;
-
- spin_lock_irqsave(&auxio_lock, flags);
-
- regval = (u8)readl(auxio_register);
- newval = regval | bits_on;
- newval &= ~bits_off;
- writel((u32)newval, auxio_register);
+ u8 bits_on = (ebus ? AUXIO_PCIO_LED : AUXIO_AUX1_LED);
+ u8 bits_off = 0;
- spin_unlock_irqrestore(&auxio_lock, flags);
+ if (!on) {
+ u8 tmp = bits_off;
+ bits_off = bits_on;
+ bits_on = tmp;
}
-}
-
-static inline void __auxio_ebus_set_led(int on)
-{
- (on) ? __auxio_ebus_set(AUXIO_PCIO_LED, 0) :
- __auxio_ebus_set(0, AUXIO_PCIO_LED) ;
-}
-
-static inline void __auxio_sbus_set_led(int on)
-{
- (on) ? __auxio_sbus_set(AUXIO_AUX1_LED, 0) :
- __auxio_sbus_set(0, AUXIO_AUX1_LED) ;
+ __auxio_rmw(bits_on, bits_off, ebus);
}
void auxio_set_led(int on)
{
- switch(auxio_devtype) {
- case AUXIO_TYPE_SBUS:
- __auxio_sbus_set_led(on);
- break;
- case AUXIO_TYPE_EBUS:
- __auxio_ebus_set_led(on);
- break;
- default:
- break;
- }
+ int ebus = auxio_devtype == AUXIO_TYPE_EBUS;
+ u8 bit;
+
+ bit = (ebus ? AUXIO_PCIO_LED : AUXIO_AUX1_LED);
+ __auxio_set_bit(bit, on, ebus);
}
-static inline void __auxio_sbus_set_lte(int on)
+static void __auxio_sbus_set_lte(int on)
{
- (on) ? __auxio_sbus_set(AUXIO_AUX1_LTE, 0) :
- __auxio_sbus_set(0, AUXIO_AUX1_LTE) ;
+ __auxio_set_bit(AUXIO_AUX1_LTE, on, 0);
}
void auxio_set_lte(int on)