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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-18 00:33:29 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-18 00:33:29 -0300 |
| commit | 6ece15cc69504348ad484564d14968c542987053 (patch) | |
| tree | cd6194a333518d78edd611023f2e255e4b66c8c9 /arch/mips/mti-malta/malta-time.c | |
| parent | 0a2bb03fe20f81dc4cac96d7fe0e4194ae6efffd (diff) | |
Linux-libre 4.1.6-gnu
Diffstat (limited to 'arch/mips/mti-malta/malta-time.c')
| -rw-r--r-- | arch/mips/mti-malta/malta-time.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/mips/mti-malta/malta-time.c b/arch/mips/mti-malta/malta-time.c index 185e68261..a7f7d9ffb 100644 --- a/arch/mips/mti-malta/malta-time.c +++ b/arch/mips/mti-malta/malta-time.c @@ -148,6 +148,7 @@ int get_c0_perfcount_int(void) return mips_cpu_perf_irq; } +EXPORT_SYMBOL_GPL(get_c0_perfcount_int); unsigned int get_c0_compare_int(void) { @@ -165,14 +166,17 @@ unsigned int get_c0_compare_int(void) static void __init init_rtc(void) { - /* stop the clock whilst setting it up */ - CMOS_WRITE(RTC_SET | RTC_24H, RTC_CONTROL); + unsigned char freq, ctrl; - /* 32KHz time base */ - CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_FREQ_SELECT); + /* Set 32KHz time base if not already set */ + freq = CMOS_READ(RTC_FREQ_SELECT); + if ((freq & RTC_DIV_CTL) != RTC_REF_CLCK_32KHZ) + CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_FREQ_SELECT); - /* start the clock */ - CMOS_WRITE(RTC_24H, RTC_CONTROL); + /* Ensure SET bit is clear so RTC can run */ + ctrl = CMOS_READ(RTC_CONTROL); + if (ctrl & RTC_SET) + CMOS_WRITE(ctrl & ~RTC_SET, RTC_CONTROL); } void __init plat_time_init(void) |