diff options
Diffstat (limited to 'drivers/gpu/msm/kgsl_pwrctrl.c')
| -rw-r--r-- | drivers/gpu/msm/kgsl_pwrctrl.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/msm/kgsl_pwrctrl.c b/drivers/gpu/msm/kgsl_pwrctrl.c index e42f92392e8d..4162fa61f51a 100644 --- a/drivers/gpu/msm/kgsl_pwrctrl.c +++ b/drivers/gpu/msm/kgsl_pwrctrl.c @@ -1022,6 +1022,8 @@ static void __force_on(struct kgsl_device *device, int flag, int on) if (on) { switch (flag) { case KGSL_PWRFLAGS_CLK_ON: + /* make sure pwrrail is ON before enabling clocks */ + kgsl_pwrctrl_pwrrail(device, KGSL_PWRFLAGS_ON); kgsl_pwrctrl_clk(device, KGSL_PWRFLAGS_ON, KGSL_STATE_ACTIVE); break; @@ -1817,7 +1819,12 @@ static int kgsl_pwrctrl_pwrrail(struct kgsl_device *device, int state) struct kgsl_pwrctrl *pwr = &device->pwrctrl; int status = 0; - if (test_bit(KGSL_PWRFLAGS_POWER_ON, &pwr->ctrl_flags)) + /* + * Disabling the regulator means also disabling dependent clocks. + * Hence don't disable it if force clock ON is set. + */ + if (test_bit(KGSL_PWRFLAGS_POWER_ON, &pwr->ctrl_flags) || + test_bit(KGSL_PWRFLAGS_CLK_ON, &pwr->ctrl_flags)) return 0; if (state == KGSL_PWRFLAGS_OFF) { |