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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (C) 2013 Red Hat4 * Author: Rob Clark <robdclark@gmail.com>5 */6 7#include <linux/irq.h>8 9#include <drm/drm_print.h>10#include <drm/drm_vblank.h>11 12#include "msm_drv.h"13#include "mdp5_kms.h"14 15void mdp5_set_irqmask(struct mdp_kms *mdp_kms, uint32_t irqmask,16 uint32_t old_irqmask)17{18 mdp5_write(to_mdp5_kms(mdp_kms), REG_MDP5_INTR_CLEAR,19 irqmask ^ (irqmask & old_irqmask));20 mdp5_write(to_mdp5_kms(mdp_kms), REG_MDP5_INTR_EN, irqmask);21}22 23static void mdp5_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)24{25 struct mdp5_kms *mdp5_kms = container_of(irq, struct mdp5_kms, error_handler);26 static DEFINE_RATELIMIT_STATE(rs, 5*HZ, 1);27 extern bool dumpstate;28 29 DRM_ERROR_RATELIMITED("errors: %08x\n", irqstatus);30 31 if (dumpstate && __ratelimit(&rs)) {32 struct drm_printer p = drm_info_printer(mdp5_kms->dev->dev);33 drm_state_dump(mdp5_kms->dev, &p);34 }35}36 37void mdp5_irq_preinstall(struct msm_kms *kms)38{39 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));40 struct device *dev = &mdp5_kms->pdev->dev;41 42 pm_runtime_get_sync(dev);43 mdp5_write(mdp5_kms, REG_MDP5_INTR_CLEAR, 0xffffffff);44 mdp5_write(mdp5_kms, REG_MDP5_INTR_EN, 0x00000000);45 pm_runtime_put_sync(dev);46}47 48int mdp5_irq_postinstall(struct msm_kms *kms)49{50 struct mdp_kms *mdp_kms = to_mdp_kms(kms);51 struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);52 struct device *dev = &mdp5_kms->pdev->dev;53 struct mdp_irq *error_handler = &mdp5_kms->error_handler;54 55 error_handler->irq = mdp5_irq_error_handler;56 error_handler->irqmask = MDP5_IRQ_INTF0_UNDER_RUN |57 MDP5_IRQ_INTF1_UNDER_RUN |58 MDP5_IRQ_INTF2_UNDER_RUN |59 MDP5_IRQ_INTF3_UNDER_RUN;60 61 pm_runtime_get_sync(dev);62 mdp_irq_register(mdp_kms, error_handler);63 pm_runtime_put_sync(dev);64 65 return 0;66}67 68void mdp5_irq_uninstall(struct msm_kms *kms)69{70 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));71 struct device *dev = &mdp5_kms->pdev->dev;72 73 pm_runtime_get_sync(dev);74 mdp5_write(mdp5_kms, REG_MDP5_INTR_EN, 0x00000000);75 pm_runtime_put_sync(dev);76}77 78irqreturn_t mdp5_irq(struct msm_kms *kms)79{80 struct mdp_kms *mdp_kms = to_mdp_kms(kms);81 struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);82 struct drm_device *dev = mdp5_kms->dev;83 struct drm_crtc *crtc;84 uint32_t status, enable;85 86 enable = mdp5_read(mdp5_kms, REG_MDP5_INTR_EN);87 status = mdp5_read(mdp5_kms, REG_MDP5_INTR_STATUS) & enable;88 mdp5_write(mdp5_kms, REG_MDP5_INTR_CLEAR, status);89 90 VERB("status=%08x", status);91 92 mdp_dispatch_irqs(mdp_kms, status);93 94 drm_for_each_crtc(crtc, dev)95 if (status & mdp5_crtc_vblank(crtc))96 drm_crtc_handle_vblank(crtc);97 98 return IRQ_HANDLED;99}100 101int mdp5_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)102{103 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));104 struct device *dev = &mdp5_kms->pdev->dev;105 106 pm_runtime_get_sync(dev);107 mdp_update_vblank_mask(to_mdp_kms(kms),108 mdp5_crtc_vblank(crtc), true);109 pm_runtime_put_sync(dev);110 111 return 0;112}113 114void mdp5_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)115{116 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));117 struct device *dev = &mdp5_kms->pdev->dev;118 119 pm_runtime_get_sync(dev);120 mdp_update_vblank_mask(to_mdp_kms(kms),121 mdp5_crtc_vblank(crtc), false);122 pm_runtime_put_sync(dev);123}124