Commit 63f9d9df authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

powerpc/time: Remove ifdef in get_dec() and set_dec()



Move SPRN_PIT definition in reg.h.

This allows to remove ifdef in get_dec() and set_dec() and
makes them more readable.

Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/3c9a6eb0fc040868ac59be66f338d08fd017668d.1601549945.git.christophe.leroy@csgroup.eu
parent 6601ec1c
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+2 −0
Original line number Diff line number Diff line
@@ -521,6 +521,8 @@
#define SPRN_TSCR	0x399	/* Thread Switch Control Register */

#define SPRN_DEC	0x016		/* Decrement Register */
#define SPRN_PIT	0x3DB		/* Programmable Interval Timer (40x/BOOKE) */

#define SPRN_DER	0x095		/* Debug Enable Register */
#define DER_RSTE	0x40000000	/* Reset Interrupt */
#define DER_CHSTPE	0x20000000	/* Check Stop */
+0 −1
Original line number Diff line number Diff line
@@ -174,7 +174,6 @@
#define SPRN_L1CSR1	0x3F3	/* L1 Cache Control and Status Register 1 */
#define SPRN_MMUCSR0	0x3F4	/* MMU Control and Status Register 0 */
#define SPRN_MMUCFG	0x3F7	/* MMU Configuration Register */
#define SPRN_PIT	0x3DB	/* Programmable Interval Timer */
#define SPRN_BUCSR	0x3F5	/* Branch Unit Control and Status */
#define SPRN_L2CSR0	0x3F9	/* L2 Data Cache Control and Status Register 0 */
#define SPRN_L2CSR1	0x3FA	/* L2 Data Cache Control and Status Register 1 */
+10 −13
Original line number Diff line number Diff line
@@ -100,11 +100,10 @@ static inline void set_tb(unsigned int upper, unsigned int lower)
 */
static inline u64 get_dec(void)
{
#if defined(CONFIG_40x)
	return (mfspr(SPRN_PIT));
#else
	return (mfspr(SPRN_DEC));
#endif
	if (IS_ENABLED(CONFIG_40x))
		return mfspr(SPRN_PIT);

	return mfspr(SPRN_DEC);
}

/*
@@ -114,14 +113,12 @@ static inline u64 get_dec(void)
 */
static inline void set_dec(u64 val)
{
#if defined(CONFIG_40x)
	if (IS_ENABLED(CONFIG_40x))
		mtspr(SPRN_PIT, (u32)val);
#else
#ifndef CONFIG_BOOKE
	--val;
#endif
	else if (IS_ENABLED(CONFIG_BOOKE))
		mtspr(SPRN_DEC, val);
#endif /* not 40x */
	else
		mtspr(SPRN_DEC, val - 1);
}

static inline unsigned long tb_ticks_since(unsigned long tstamp)