diff options
| author | Alex Elder <elder@linaro.org> | 2021-03-24 08:15:27 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-24 16:52:47 -0700 |
| commit | 1910494ee32cb43e295f9bf471bdc1d28ada99f7 (patch) | |
| tree | 9c454c0c47ae53ce762e1e1d51d0133d564aa677 /drivers/net/ipa/ipa_main.c | |
| parent | e6e49e435512c8bcf104e594d3cc34b8f3818492 (diff) | |
net: ipa: move ipa_aggr_granularity_val()
We only use ipa_aggr_granularity_val() inside "ipa_main.c", so it
doesn't really need to be defined in a header file. It makes some
sense to be grouped with the register definitions, but it is unlike
the other inline functions now defined in "ipa_reg.h". So move it
into "ipa_main.c" where it's used. TIMER_FREQUENCY is used only
by that function, so move that definition as well.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ipa/ipa_main.c')
| -rw-r--r-- | drivers/net/ipa/ipa_main.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c index 62d82d48aed6..ba1bfc30210a 100644 --- a/drivers/net/ipa/ipa_main.c +++ b/drivers/net/ipa/ipa_main.c @@ -287,6 +287,21 @@ ipa_hardware_config_qsb(struct ipa *ipa, const struct ipa_data *data) iowrite32(val, ipa->reg_virt + IPA_REG_QSB_MAX_READS_OFFSET); } +/* The internal inactivity timer clock is used for the aggregation timer */ +#define TIMER_FREQUENCY 32000 /* 32 KHz inactivity timer clock */ + +/* Compute the value to use in the COUNTER_CFG register AGGR_GRANULARITY + * field to represent the given number of microseconds. The value is one + * less than the number of timer ticks in the requested period. 0 is not + * a valid granularity value. + */ +static u32 ipa_aggr_granularity_val(u32 usec) +{ + /* assert(usec != 0); */ + + return DIV_ROUND_CLOSEST(usec * TIMER_FREQUENCY, USEC_PER_SEC) - 1; +} + /* IPA uses unified Qtime starting at IPA v4.5, implementing various * timestamps and timers independent of the IPA core clock rate. The * Qtimer is based on a 56-bit timestamp incremented at each tick of |