diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c')
-rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c index 6a0a74832fb6..49bd77a755aa 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c @@ -223,9 +223,11 @@ static void dpu_core_irq_callback_handler(struct dpu_kms *dpu_kms, unsigned int VERB("IRQ=[%d, %d]\n", DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx)); - if (!irq_entry->cb) + if (!irq_entry->cb) { DRM_ERROR("no registered cb, IRQ=[%d, %d]\n", DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx)); + return; + } atomic_inc(&irq_entry->count); @@ -235,6 +237,11 @@ static void dpu_core_irq_callback_handler(struct dpu_kms *dpu_kms, unsigned int irq_entry->cb(irq_entry->arg); } +/** + * dpu_core_irq - core IRQ handler + * @kms: MSM KMS handle + * @return: interrupt handling status + */ irqreturn_t dpu_core_irq(struct msm_kms *kms) { struct dpu_kms *dpu_kms = to_dpu_kms(kms); @@ -440,6 +447,12 @@ static void dpu_disable_all_irqs(struct dpu_kms *dpu_kms) wmb(); } +/** + * dpu_core_irq_read - IRQ helper function for reading IRQ status + * @dpu_kms: DPU handle + * @irq_idx: irq index + * @return: non-zero if irq detected; otherwise no irq detected + */ u32 dpu_core_irq_read(struct dpu_kms *dpu_kms, unsigned int irq_idx) { @@ -474,6 +487,12 @@ u32 dpu_core_irq_read(struct dpu_kms *dpu_kms, return intr_status; } +/** + * dpu_hw_intr_init(): Initializes the interrupts hw object + * @dev: Corresponding device for devres management + * @addr: mapped register io address of MDP + * @m: pointer to MDSS catalog data + */ struct dpu_hw_intr *dpu_hw_intr_init(struct drm_device *dev, void __iomem *addr, const struct dpu_mdss_cfg *m) @@ -515,6 +534,17 @@ struct dpu_hw_intr *dpu_hw_intr_init(struct drm_device *dev, return intr; } +/** + * dpu_core_irq_register_callback - For registering callback function on IRQ + * interrupt + * @dpu_kms: DPU handle + * @irq_idx: irq index + * @irq_cb: IRQ callback function. + * @irq_arg: IRQ callback argument. + * @return: 0 for success registering callback, otherwise failure + * + * This function supports registration of multiple callbacks for each interrupt. + */ int dpu_core_irq_register_callback(struct dpu_kms *dpu_kms, unsigned int irq_idx, void (*irq_cb)(void *arg), @@ -565,6 +595,15 @@ int dpu_core_irq_register_callback(struct dpu_kms *dpu_kms, return 0; } +/** + * dpu_core_irq_unregister_callback - For unregistering callback function on IRQ + * interrupt + * @dpu_kms: DPU handle + * @irq_idx: irq index + * @return: 0 for success registering callback, otherwise failure + * + * This function supports registration of multiple callbacks for each interrupt. + */ int dpu_core_irq_unregister_callback(struct dpu_kms *dpu_kms, unsigned int irq_idx) { @@ -626,6 +665,11 @@ static int dpu_debugfs_core_irq_show(struct seq_file *s, void *v) DEFINE_SHOW_ATTRIBUTE(dpu_debugfs_core_irq); +/** + * dpu_debugfs_core_irq_init - register core irq debugfs + * @dpu_kms: pointer to kms + * @parent: debugfs directory root + */ void dpu_debugfs_core_irq_init(struct dpu_kms *dpu_kms, struct dentry *parent) { @@ -634,6 +678,11 @@ void dpu_debugfs_core_irq_init(struct dpu_kms *dpu_kms, } #endif +/** + * dpu_core_irq_preinstall - perform pre-installation of core IRQ handler + * @kms: MSM KMS handle + * @return: none + */ void dpu_core_irq_preinstall(struct msm_kms *kms) { struct dpu_kms *dpu_kms = to_dpu_kms(kms); @@ -651,6 +700,11 @@ void dpu_core_irq_preinstall(struct msm_kms *kms) } } +/** + * dpu_core_irq_uninstall - uninstall core IRQ handler + * @kms: MSM KMS handle + * @return: none + */ void dpu_core_irq_uninstall(struct msm_kms *kms) { struct dpu_kms *dpu_kms = to_dpu_kms(kms); |