diff options
| author | Albrecht Dreß <albrecht.dress@arcor.de> | 2009-11-12 13:31:35 -0700 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2009-11-12 13:31:35 -0700 |
| commit | 690b846aa1b42b4f35bfac0022b75a288d97fd13 (patch) | |
| tree | 091ef9d196c9b80156bc6ce132eaa4f39e02afd4 /arch/powerpc/platforms/52xx | |
| parent | 02d9e58e464b8aeed9a9cba951c3ae3c6bd06e30 (diff) | |
mpc5200/gpt: tiny fix for gpt period limitation
This patch changes the period parameter of mpc52xx_gpt_start_timer to
a u64 to support larger timeout periods.
Signed-off-by: Albrecht Dreß <albrecht.dress@arcor.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'arch/powerpc/platforms/52xx')
| -rw-r--r-- | arch/powerpc/platforms/52xx/mpc52xx_gpt.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c index 2c3fa13571c..77572abca6c 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c @@ -378,12 +378,12 @@ EXPORT_SYMBOL(mpc52xx_gpt_from_irq); /** * mpc52xx_gpt_start_timer - Set and enable the GPT timer * @gpt: Pointer to gpt private data structure - * @period: period of timer + * @period: period of timer in ns; max. ~130s @ 33MHz IPB clock * @continuous: set to 1 to make timer continuous free running * * An interrupt will be generated every time the timer fires */ -int mpc52xx_gpt_start_timer(struct mpc52xx_gpt_priv *gpt, int period, +int mpc52xx_gpt_start_timer(struct mpc52xx_gpt_priv *gpt, u64 period, int continuous) { u32 clear, set; @@ -400,7 +400,7 @@ int mpc52xx_gpt_start_timer(struct mpc52xx_gpt_priv *gpt, int period, * arithmatic is done here to preserve the precision until the value * is scaled back down into the u32 range. Period is in 'ns', bus * frequency is in Hz. */ - clocks = (u64)period * (u64)gpt->ipb_freq; + clocks = period * (u64)gpt->ipb_freq; do_div(clocks, 1000000000); /* Scale it down to ns range */ /* This device cannot handle a clock count greater than 32 bits */ |