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x86/platform/intel-mid: Enable RTC on Intel Merrifield

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Intel Merrifield has legacy RTC in contrast to the rest on Intel MID
platforms.

Set legacy RTC flag explicitly in architecture initialization code and
allocate interrupt for it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170113164355.66161-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Andy Shevchenko 2017-01-13 18:43:55 +02:00 committed by Ingo Molnar
parent a665ece8b4
commit de1c2540aa
2 changed files with 15 additions and 0 deletions
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1
arch/x86/platform/intel-mid/mrfld.c
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@ -91,6 +91,7 @@ static unsigned long __init tangier_calibrate_tsc(void)
static void __init tangier_arch_setup(void)
{
x86_platform.calibrate_tsc = tangier_calibrate_tsc;
x86_platform.legacy.rtc = 1;
}
/* tangier arch ops */

14
arch/x86/platform/intel-mid/sfi.c
View File

@ -41,6 +41,7 @@
#include <asm/intel_scu_ipc.h>
#include <asm/apb_timer.h>
#include <asm/reboot.h>
#include <asm/time.h>
#define SFI_SIG_OEM0 "OEM0"
#define MAX_IPCDEVS 24
@ -539,8 +540,21 @@ static int __init sfi_parse_devs(struct sfi_table_header *table)
return 0;
}
static int __init intel_mid_legacy_rtc_init(void)
{
struct irq_alloc_info info;
if (!x86_platform.legacy.rtc)
return -ENODEV;
ioapic_set_alloc_attr(&info, NUMA_NO_NODE, 1, 0);
return mp_map_gsi_to_irq(RTC_IRQ, IOAPIC_MAP_ALLOC, &info);
}
static int __init intel_mid_platform_init(void)
{
intel_mid_legacy_rtc_init();
sfi_table_parse(SFI_SIG_GPIO, NULL, NULL, sfi_parse_gpio);
sfi_table_parse(SFI_SIG_DEVS, NULL, NULL, sfi_parse_devs);
return 0;