diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2012-12-01 16:18:07 +0530 |
|---|---|---|
| committer | Jon Medhurst <tixy@linaro.org> | 2013-04-29 09:43:15 +0100 |
| commit | 23f4428dbdcac2fb064a1c4fdbb084fbaa584d0e (patch) | |
| tree | f64c5d8a6de3937390706d47f3124b551e1cb20f /drivers | |
| parent | b16af23be497bb00d4233677e3affe76caed6a7c (diff) | |
misc: vexpress/spc: add support to get frequency table from spc
SPC controller driver has already populated frequency table from firmware and
not its time to share it with other frameworks like: cpufreq. This patch
provides interface to get freq table from spc driver.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/vexpress/arm-spc.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/misc/vexpress/arm-spc.c b/drivers/misc/vexpress/arm-spc.c index 5708bb35a10..913dd087282 100644 --- a/drivers/misc/vexpress/arm-spc.c +++ b/drivers/misc/vexpress/arm-spc.c @@ -117,6 +117,7 @@ struct vexpress_spc_drvdata { struct semaphore lock; struct completion done; uint32_t freqs[MAX_CLUSTERS][MAX_OPPS]; + int freqs_cnt[MAX_CLUSTERS]; }; static struct vexpress_spc_drvdata *info; @@ -278,7 +279,7 @@ static int vexpress_spc_find_perf_index(int cluster, u32 freq) { int idx; /* Hash function would be ideal, based on hashtable in v3.8?? */ - for (idx = 0; idx < MAX_OPPS; idx++) + for (idx = 0; idx < info->freqs_cnt[cluster]; idx++) if (info->freqs[cluster][idx] == freq) break; return idx; @@ -613,9 +614,18 @@ static int vexpress_spc_populate_opps(uint32_t cluster) break; } + info->freqs_cnt[cluster] = j; return ret; } +unsigned int *vexpress_spc_get_freq_table(uint32_t cluster, int *count) +{ + + *count = info->freqs_cnt[cluster]; + return info->freqs[cluster]; +} +EXPORT_SYMBOL_GPL(vexpress_spc_get_freq_table); + static int vexpress_spc_init(void) { struct device_node *node = of_find_compatible_node(NULL, NULL, |