| /* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #ifndef __SDE_CORE_IRQ_H__ |
| #define __SDE_CORE_IRQ_H__ |
| |
| #include "sde_kms.h" |
| #include "sde_hw_interrupts.h" |
| |
| /** |
| * sde_core_irq_preinstall - perform pre-installation of core IRQ handler |
| * @sde_kms: SDE handle |
| * @return: none |
| */ |
| void sde_core_irq_preinstall(struct sde_kms *sde_kms); |
| |
| /** |
| * sde_core_irq_postinstall - perform post-installation of core IRQ handler |
| * @sde_kms: SDE handle |
| * @return: 0 if success; error code otherwise |
| */ |
| int sde_core_irq_postinstall(struct sde_kms *sde_kms); |
| |
| /** |
| * sde_core_irq_uninstall - uninstall core IRQ handler |
| * @sde_kms: SDE handle |
| * @return: none |
| */ |
| void sde_core_irq_uninstall(struct sde_kms *sde_kms); |
| |
| /** |
| * sde_core_irq - core IRQ handler |
| * @sde_kms: SDE handle |
| * @return: interrupt handling status |
| */ |
| irqreturn_t sde_core_irq(struct sde_kms *sde_kms); |
| |
| /** |
| * sde_core_irq_idx_lookup - IRQ helper function for lookup irq_idx from HW |
| * interrupt mapping table. |
| * @sde_kms: SDE handle |
| * @intr_type: SDE HW interrupt type for lookup |
| * @instance_idx: SDE HW block instance defined in sde_hw_mdss.h |
| * @return: irq_idx or -EINVAL when fail to lookup |
| */ |
| int sde_core_irq_idx_lookup( |
| struct sde_kms *sde_kms, |
| enum sde_intr_type intr_type, |
| uint32_t instance_idx); |
| |
| /** |
| * sde_core_irq_enable - IRQ helper function for enabling one or more IRQs |
| * @sde_kms: SDE handle |
| * @irq_idxs: Array of irq index |
| * @irq_count: Number of irq_idx provided in the array |
| * @return: 0 for success enabling IRQ, otherwise failure |
| * |
| * This function increments count on each enable and decrements on each |
| * disable. Interrupts is enabled if count is 0 before increment. |
| */ |
| int sde_core_irq_enable( |
| struct sde_kms *sde_kms, |
| int *irq_idxs, |
| uint32_t irq_count); |
| |
| /** |
| * sde_core_irq_disable - IRQ helper function for disabling one of more IRQs |
| * @sde_kms: SDE handle |
| * @irq_idxs: Array of irq index |
| * @irq_count: Number of irq_idx provided in the array |
| * @return: 0 for success disabling IRQ, otherwise failure |
| * |
| * This function increments count on each enable and decrements on each |
| * disable. Interrupts is disabled if count is 0 after decrement. |
| */ |
| int sde_core_irq_disable( |
| struct sde_kms *sde_kms, |
| int *irq_idxs, |
| uint32_t irq_count); |
| |
| /** |
| * sde_core_irq_read - IRQ helper function for reading IRQ status |
| * @sde_kms: SDE handle |
| * @irq_idx: irq index |
| * @clear: True to clear the irq after read |
| * @return: non-zero if irq detected; otherwise no irq detected |
| */ |
| u32 sde_core_irq_read( |
| struct sde_kms *sde_kms, |
| int irq_idx, |
| bool clear); |
| |
| /** |
| * sde_core_irq_register_callback - For registering callback function on IRQ |
| * interrupt |
| * @sde_kms: SDE handle |
| * @irq_idx: irq index |
| * @irq_cb: IRQ callback structure, containing callback function |
| * and argument. Passing NULL for irq_cb will unregister |
| * the callback for the given irq_idx |
| * This must exist until un-registration. |
| * @return: 0 for success registering callback, otherwise failure |
| * |
| * This function supports registration of multiple callbacks for each interrupt. |
| */ |
| int sde_core_irq_register_callback( |
| struct sde_kms *sde_kms, |
| int irq_idx, |
| struct sde_irq_callback *irq_cb); |
| |
| /** |
| * sde_core_irq_unregister_callback - For unregistering callback function on IRQ |
| * interrupt |
| * @sde_kms: SDE handle |
| * @irq_idx: irq index |
| * @irq_cb: IRQ callback structure, containing callback function |
| * and argument. Passing NULL for irq_cb will unregister |
| * the callback for the given irq_idx |
| * This must match with registration. |
| * @return: 0 for success registering callback, otherwise failure |
| * |
| * This function supports registration of multiple callbacks for each interrupt. |
| */ |
| int sde_core_irq_unregister_callback( |
| struct sde_kms *sde_kms, |
| int irq_idx, |
| struct sde_irq_callback *irq_cb); |
| |
| #endif /* __SDE_CORE_IRQ_H__ */ |