Commit aa80a4a5 authored by Rob Clark's avatar Rob Clark

drm/msm: kexec fixes

In kexec environment, we are more likely to encounter irq's already
enabled from previous environment.  At which point we find that writes
to disable/clear pending irq's are slightly less than useless without
first enabling clocks.

TODO: full blown state read-in so kexec'd kernel can inherit the mode
already setup.
Signed-off-by: default avatarRob Clark <robdclark@gmail.com>
parent 757fdfaf
......@@ -32,7 +32,10 @@ static void mdp4_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
void mdp4_irq_preinstall(struct msm_kms *kms)
{
struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
mdp4_enable(mdp4_kms);
mdp4_write(mdp4_kms, REG_MDP4_INTR_CLEAR, 0xffffffff);
mdp4_write(mdp4_kms, REG_MDP4_INTR_ENABLE, 0x00000000);
mdp4_disable(mdp4_kms);
}
int mdp4_irq_postinstall(struct msm_kms *kms)
......@@ -53,7 +56,9 @@ int mdp4_irq_postinstall(struct msm_kms *kms)
void mdp4_irq_uninstall(struct msm_kms *kms)
{
struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
mdp4_enable(mdp4_kms);
mdp4_write(mdp4_kms, REG_MDP4_INTR_ENABLE, 0x00000000);
mdp4_disable(mdp4_kms);
}
irqreturn_t mdp4_irq(struct msm_kms *kms)
......
......@@ -34,7 +34,10 @@ static void mdp5_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
void mdp5_irq_preinstall(struct msm_kms *kms)
{
struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
mdp5_enable(mdp5_kms);
mdp5_write(mdp5_kms, REG_MDP5_INTR_CLEAR, 0xffffffff);
mdp5_write(mdp5_kms, REG_MDP5_INTR_EN, 0x00000000);
mdp5_disable(mdp5_kms);
}
int mdp5_irq_postinstall(struct msm_kms *kms)
......@@ -57,7 +60,9 @@ int mdp5_irq_postinstall(struct msm_kms *kms)
void mdp5_irq_uninstall(struct msm_kms *kms)
{
struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
mdp5_enable(mdp5_kms);
mdp5_write(mdp5_kms, REG_MDP5_INTR_EN, 0x00000000);
mdp5_disable(mdp5_kms);
}
static void mdp5_irq_mdp(struct mdp_kms *mdp_kms)
......
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