[MIPS] txx9tmr clockevent/clocksource driver

Convert jmr3927_clock_event_device to more generic
txx9tmr_clock_event_device which supports one-shot mode.  The
txx9tmr_clock_event_device can be used for TX49 too if the cp0 timer
interrupt was not available.

Convert jmr3927_hpt_read to txx9_clocksource driver which does not
depends jiffies anymore.  The txx9_clocksource itself can be used for
TX49, but normally TX49 uses higher precision clocksource_mips.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 7 insertions, 12 deletions

diff --git a/arch/mips/tx4938/toshiba_rbtx4938/setup.c b/arch/mips/tx4938/toshiba_rbtx4938/setup.c
index ceecaf498957..4a8152375efe 100644
--- a/arch/mips/tx4938/toshiba_rbtx4938/setup.c
+++ b/arch/mips/tx4938/toshiba_rbtx4938/setup.c
@@ -26,6 +26,7 @@
 #include <asm/reboot.h>
 #include <asm/irq.h>
 #include <asm/time.h>
+#include <asm/txx9tmr.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/bootinfo.h>
@@ -773,15 +774,8 @@ void __init tx4938_board_setup(void)
         }
 
         /* TMR */
-        /* disable all timers */
-        for (i = 0; i < TX4938_NR_TMR; i++) {
-                tx4938_tmrptr(i)->tcr  = 0x00000020;
-                tx4938_tmrptr(i)->tisr = 0;
-                tx4938_tmrptr(i)->cpra = 0xffffffff;
-                tx4938_tmrptr(i)->itmr = 0;
-                tx4938_tmrptr(i)->ccdr = 0;
-                tx4938_tmrptr(i)->pgmr = 0;
-        }
+        for (i = 0; i < TX4938_NR_TMR; i++)
+                txx9_tmr_init(TX4938_TMR_REG(i) & 0xfffffffffULL);
 
         /* enable DMA */
         TX4938_WR64(0xff1fb150, TX4938_DMA_MCR_MSTEN);
@@ -852,12 +846,13 @@ void tx4938_report_pcic_status(void)
 
 #endif /* CONFIG_PCI */
 
-/* We use onchip r4k counter or TMR timer as our system wide timer
- * interrupt running at 100HZ. */
-
 void __init plat_time_init(void)
 {
         mips_hpt_frequency = txx9_cpu_clock / 2;
+        if (tx4938_ccfgptr->ccfg & TX4938_CCFG_TINTDIS)
+                txx9_clockevent_init(TX4938_TMR_REG(0) & 0xfffffffffULL,
+                                     TXX9_IRQ_BASE + TX4938_IR_TMR(0),
+                                     txx9_gbus_clock / 2);
 }
 
 void __init toshiba_rbtx4938_setup(void)