clocksource: sh_tmu: Replace hardcoded register values with macros

Define symbolic macros for all used registers bits.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

diff --git a/drivers/clocksource/sh_tmu.c b/drivers/clocksource/sh_tmu.c
index 55b7a37f0c9b2bf0efe2709703bf14f4b1a2b7c2..63ed92d56c8fafaf2014cf734b1de2091c5e4356 100644 (file)
--- a/drivers/clocksource/sh_tmu.c
+++ b/drivers/clocksource/sh_tmu.c
@@ -69,6 +69,15 @@ static DEFINE_RAW_SPINLOCK(sh_tmu_lock);
 #define TCNT 1 /* channel register */
 #define TCR 2 /* channel register */
 
+#define TCR_UNF                        (1 << 8)
+#define TCR_UNIE               (1 << 5)
+#define TCR_TPSC_CLK4          (0 << 0)
+#define TCR_TPSC_CLK16         (1 << 0)
+#define TCR_TPSC_CLK64         (2 << 0)
+#define TCR_TPSC_CLK256                (3 << 0)
+#define TCR_TPSC_CLK1024       (4 << 0)
+#define TCR_TPSC_MASK          (7 << 0)
+
 static inline unsigned long sh_tmu_read(struct sh_tmu_channel *ch, int reg_nr)
 {
        unsigned long offs;
@@ -140,7 +149,7 @@ static int __sh_tmu_enable(struct sh_tmu_channel *ch)
 
        /* configure channel to parent clock / 4, irq off */
        ch->rate = clk_get_rate(ch->tmu->clk) / 4;
-       sh_tmu_write(ch, TCR, 0x0000);
+       sh_tmu_write(ch, TCR, TCR_TPSC_CLK4);
 
        /* enable channel */
        sh_tmu_start_stop_ch(ch, 1);
@@ -165,7 +174,7 @@ static void __sh_tmu_disable(struct sh_tmu_channel *ch)
        sh_tmu_start_stop_ch(ch, 0);
 
        /* disable interrupts in TMU block */
-       sh_tmu_write(ch, TCR, 0x0000);
+       sh_tmu_write(ch, TCR, TCR_TPSC_CLK4);
 
        /* stop clock */
        clk_disable(ch->tmu->clk);
@@ -195,7 +204,7 @@ static void sh_tmu_set_next(struct sh_tmu_channel *ch, unsigned long delta,
        sh_tmu_read(ch, TCR);
 
        /* enable interrupt */
-       sh_tmu_write(ch, TCR, 0x0020);
+       sh_tmu_write(ch, TCR, TCR_UNIE | TCR_TPSC_CLK4);
 
        /* reload delta value in case of periodic timer */
        if (periodic)
@@ -215,9 +224,9 @@ static irqreturn_t sh_tmu_interrupt(int irq, void *dev_id)
 
        /* disable or acknowledge interrupt */
        if (ch->ced.mode == CLOCK_EVT_MODE_ONESHOT)
-               sh_tmu_write(ch, TCR, 0x0000);
+               sh_tmu_write(ch, TCR, TCR_TPSC_CLK4);
        else
-               sh_tmu_write(ch, TCR, 0x0020);
+               sh_tmu_write(ch, TCR, TCR_UNIE | TCR_TPSC_CLK4);
 
        /* notify clockevent layer */
        ch->ced.event_handler(&ch->ced);