diff options
| author | Deepak Kumar <dkumar@codeaurora.org> | 2017-03-17 17:27:42 +0530 |
|---|---|---|
| committer | Deepak Kumar <dkumar@codeaurora.org> | 2017-04-04 14:09:52 +0530 |
| commit | c1de946ab2d5d57a9c78e26d124cfb351d11eec9 (patch) | |
| tree | 08b38201e1adba06eb01c3b8af29703da958bbbf /drivers/gpu/msm/kgsl_pwrctrl.c | |
| parent | f4a611a3af743ebcc087102f176c35eb3ba9c2ba (diff) | |
msm: kgsl: Disable memory retention for core clock before entering SLUMBER
Memory retention is needed only for NAP state but not for SLUMBER state.
Disables memory retention for core clock before entering SLUMBER to save
power.
Change-Id: I64a5ecec6fc90d662da8d9d793860e56b0c6473f
Signed-off-by: Deepak Kumar <dkumar@codeaurora.org>
Diffstat (limited to 'drivers/gpu/msm/kgsl_pwrctrl.c')
| -rw-r--r-- | drivers/gpu/msm/kgsl_pwrctrl.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/gpu/msm/kgsl_pwrctrl.c b/drivers/gpu/msm/kgsl_pwrctrl.c index e4c431546d2a..9a2864bfd811 100644 --- a/drivers/gpu/msm/kgsl_pwrctrl.c +++ b/drivers/gpu/msm/kgsl_pwrctrl.c @@ -2003,10 +2003,6 @@ static int _get_clocks(struct kgsl_device *device) if (!strcmp(name, "isense_clk")) pwr->isense_clk_indx = i; - - if (device->ftbl->clk_set_options) - device->ftbl->clk_set_options(device, name, - pwr->grp_clks[i]); break; } } @@ -2453,6 +2449,22 @@ static void kgsl_pwrctrl_disable(struct kgsl_device *device) kgsl_pwrctrl_pwrrail(device, KGSL_PWRFLAGS_OFF); } +static void +kgsl_pwrctrl_clk_set_options(struct kgsl_device *device, bool on) +{ + struct kgsl_pwrctrl *pwr = &device->pwrctrl; + int i; + + for (i = 0; i < KGSL_MAX_CLKS; i++) { + if (pwr->grp_clks[i] == NULL) + continue; + + if (device->ftbl->clk_set_options) + device->ftbl->clk_set_options(device, clocks[i], + pwr->grp_clks[i], on); + } +} + /** * _init() - Get the GPU ready to start, but don't turn anything on * @device - Pointer to the kgsl_device struct @@ -2499,6 +2511,7 @@ static int _wake(struct kgsl_device *device) device->ftbl->resume(device); /* fall through */ case KGSL_STATE_SLUMBER: + kgsl_pwrctrl_clk_set_options(device, true); status = device->ftbl->start(device, device->pwrctrl.superfast); device->pwrctrl.superfast = false; @@ -2535,6 +2548,7 @@ static int _wake(struct kgsl_device *device) device->pwrctrl.interval_timeout); break; case KGSL_STATE_AWARE: + kgsl_pwrctrl_clk_set_options(device, true); /* Enable state before turning on irq */ kgsl_pwrctrl_set_state(device, KGSL_STATE_ACTIVE); kgsl_pwrctrl_irq(device, KGSL_PWRFLAGS_ON); @@ -2649,6 +2663,7 @@ _slumber(struct kgsl_device *device) status = kgsl_pwrctrl_enable(device); device->ftbl->suspend_context(device); device->ftbl->stop(device); + kgsl_pwrctrl_clk_set_options(device, false); kgsl_pwrctrl_disable(device); kgsl_pwrscale_sleep(device); kgsl_pwrctrl_irq(device, KGSL_PWRFLAGS_OFF); |