Hello, I wrote:
Since we already moved to GENERIC_TIME, we should implement
alternatives of old do_gettimeoffset routines to get sub-jiffies
resolution from gettimeofday(). This patch includes:
Take 2. Changes from previous patch are:
* Update against current git tree.
* Just fix sb1250_hpt_setup typo.
* Remove hack from jmr3927_hpt_read, bcm1480_hpt_read and add comments.
Subject: [PATCH] rest of works for migration to GENERIC_TIME
Since we already moved to GENERIC_TIME, we should implement
alternatives of old do_gettimeoffset routines to get sub-jiffies
resolution from gettimeofday(). This patch includes:
* MIPS clocksource support (based on works by Manish Lachwani).
* remove unused gettimeoffset routines and related codes.
* remove unised 64bit do_div64_32().
* simplify mips_hpt_init. (no argument needed, __init tag)
It looks like this change might have broken some code...
Now it looks I was too rash. :-)
* simplify c0_hpt_timer_init. (no need to write to c0_count)
* remove some hpt_init routines.
* mips_hpt_mask variable to specify bitmask of hpt value.
* convert jmr3927_do_gettimeoffset to jmr3927_hpt_read.
* convert ip27_do_gettimeoffset to ip27_hpt_read.
* convert bcm1480_do_gettimeoffset to bcm1480_hpt_read.
* simplify sb1250 hpt functions. (no need to subtract and shift)
Other than board independent part are not tested. Please test if you
have those platforms. Thank you.
diff --git a/arch/mips/dec/time.c b/arch/mips/dec/time.c
index 4cf0c06..69e424e 100644
--- a/arch/mips/dec/time.c
+++ b/arch/mips/dec/time.c
@@ -160,11 +160,6 @@ static unsigned int dec_ioasic_hpt_read(
return ioasic_read(IO_REG_FCTR);
}
-static void dec_ioasic_hpt_init(unsigned int count)
-{
- ioasic_write(IO_REG_FCTR, ioasic_read(IO_REG_FCTR) - count);
-}
-
void __init dec_time_init(void)
{
@@ -174,11 +169,9 @@ void __init dec_time_init(void)
mips_timer_state = dec_timer_state;
mips_timer_ack = dec_timer_ack;
- if (!cpu_has_counter && IOASIC) {
+ if (!cpu_has_counter && IOASIC)
/* For pre-R4k systems we use the I/O ASIC's counter. */
mips_hpt_read = dec_ioasic_hpt_read;
- mips_hpt_init = dec_ioasic_hpt_init;
- }
With mips_hpt_init() handler gone, how the initial value is loaded here?
Well, this doesn't seem needed anymore, since the jiffy interrupts are
caused by RTC there...
WBR, Sergei
