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>

1 files changed, 14 insertions, 5 deletions

diff --git a/drivers/clocksource/sh_tmu.c b/drivers/clocksource/sh_tmu.c
index 55b7a37f0c9b..63ed92d56c8f 100644
--- 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);