Most of the drivers do following in their ->target_index() routines:
struct cpufreq_freqs freqs; freqs.old = old freq... freqs.new = new freq...
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
/* Change rate here */
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
This is replicated over all cpufreq drivers today and there doesn't exists a good enough reason why this shouldn't be moved to cpufreq core instead.
Earlier patches have added support in cpufreq core to do cpufreq notification on frequency change, this one removes it from this driver.
Some related minor cleanups are also done along with it.
Cc: Steven Miao realmz6@gmail.com Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- drivers/cpufreq/blackfin-cpufreq.c | 22 +++++++--------------- 1 file changed, 7 insertions(+), 15 deletions(-)
diff --git a/drivers/cpufreq/blackfin-cpufreq.c b/drivers/cpufreq/blackfin-cpufreq.c index 12528b2..e9e63fc 100644 --- a/drivers/cpufreq/blackfin-cpufreq.c +++ b/drivers/cpufreq/blackfin-cpufreq.c @@ -132,27 +132,23 @@ static int bfin_target(struct cpufreq_policy *policy, unsigned int index) #ifndef CONFIG_BF60x unsigned int plldiv; #endif - struct cpufreq_freqs freqs; static unsigned long lpj_ref; static unsigned int lpj_ref_freq; + unsigned int old_freq, new_freq; int ret = 0;
#if defined(CONFIG_CYCLES_CLOCKSOURCE) cycles_t cycles; #endif
- freqs.old = bfin_getfreq_khz(0); - freqs.new = bfin_freq_table[index].frequency; + old_freq = bfin_getfreq_khz(0); + new_freq = bfin_freq_table[index].frequency;
- pr_debug("cpufreq: changing cclk to %lu; target = %u, oldfreq = %u\n", - freqs.new, freqs.new, freqs.old); - - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); #ifndef CONFIG_BF60x plldiv = (bfin_read_PLL_DIV() & SSEL) | dpm_state_table[index].csel; bfin_write_PLL_DIV(plldiv); #else - ret = cpu_set_cclk(policy->cpu, freqs.new * 1000); + ret = cpu_set_cclk(policy->cpu, new_freq * 1000); if (ret != 0) { WARN_ONCE(ret, "cpufreq set freq failed %d\n", ret); return ret; @@ -168,17 +164,13 @@ static int bfin_target(struct cpufreq_policy *policy, unsigned int index) #endif if (!lpj_ref_freq) { lpj_ref = loops_per_jiffy; - lpj_ref_freq = freqs.old; + lpj_ref_freq = old_freq; } - if (freqs.new != freqs.old) { + if (new_freq != old_freq) { loops_per_jiffy = cpufreq_scale(lpj_ref, - lpj_ref_freq, freqs.new); + lpj_ref_freq, new_freq); }
- /* TODO: just test case for cycles clock source, remove later */ - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - - pr_debug("cpufreq: done\n"); return ret; }