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msm: dcvs: do not run gpu set_floor_frequency callbacks after stop_sink

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Once a gpu calls stop_sink and is no longer participating in dcvs, we
should not call set_floor_frequency callbacks for that gpu.

Change-Id: I3cde82dc9975bcb37f065ea7ab8eb88a8f7fc933
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
This commit is contained in:
Steve Muckle
2012-11-19 16:38:55 -08:00
parent 016af00bf6
commit 77c66a3c6c
1 changed files with 17 additions and 3 deletions
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arch/arm/mach-msm/msm_dcvs.c
+17 -3
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@@ -150,6 +150,8 @@ static struct msm_dcvs_freq_entry cpu_freq_tbl[DCVS_MAX_NUM_FREQS];
static unsigned num_cpu_freqs;
static struct msm_dcvs_platform_data *dcvs_pdata;
static DEFINE_MUTEX(gpu_floor_mutex);
static void force_stop_slack_timer(struct dcvs_core *core)
{
unsigned long flags;
@@ -279,9 +281,12 @@ static void apply_gpu_floor(int cpu_freq)
gpu = &core_list[i];
if (gpu->dcvs_core_id == -1)
continue;
if (gpu->set_floor_frequency)
mutex_lock(&gpu_floor_mutex);
if (gpu->pending_freq != STOP_FREQ_CHANGE &&
gpu->set_floor_frequency)
gpu->set_floor_frequency(gpu->type_core_num,
gpu_floor_freq);
mutex_unlock(&gpu_floor_mutex);
}
}
@@ -928,7 +933,6 @@ int msm_dcvs_register_core(
core->get_frequency = get_frequency;
core->idle_enable = idle_enable;
core->set_floor_frequency = set_floor_frequency;
core->pending_freq = STOP_FREQ_CHANGE;
core->info = info;
if (type == MSM_DCVS_CORE_TYPE_CPU)
@@ -1094,10 +1098,18 @@ int msm_dcvs_freq_sink_stop(int dcvs_core_id)
0, core->actual_freq, &freq, &ret1);
core->idle_enable(core->type_core_num,
MSM_DCVS_ENABLE_HIGH_LATENCY_MODES);
if (core->type == MSM_DCVS_CORE_TYPE_GPU)
mutex_lock(&gpu_floor_mutex);
spin_lock_irqsave(&core->pending_freq_lock, flags);
/* flush out all the pending freq changes */
request_freq_change(core, STOP_FREQ_CHANGE);
spin_unlock_irqrestore(&core->pending_freq_lock, flags);
if (core->type == MSM_DCVS_CORE_TYPE_GPU)
mutex_unlock(&gpu_floor_mutex);
force_stop_slack_timer(core);
return 0;
@@ -1222,8 +1234,10 @@ static int __init msm_dcvs_early_init(void)
goto done;
}
for (i = 0; i < CORES_MAX; i++)
for (i = 0; i < CORES_MAX; i++) {
core_list[i].dcvs_core_id = -1;
core_list[i].pending_freq = STOP_FREQ_CHANGE;
}
done:
return ret;
}