126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2013 Red Hat
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* Author: Rob Clark <robdclark@gmail.com>
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*/
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#include <linux/irq.h>
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#include <drm/drm_print.h>
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#include <drm/drm_vblank.h>
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#include "msm_drv.h"
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#include "mdp5_kms.h"
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void mdp5_set_irqmask(struct mdp_kms *mdp_kms, uint32_t irqmask,
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uint32_t old_irqmask)
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{
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mdp5_write(to_mdp5_kms(mdp_kms), REG_MDP5_INTR_CLEAR,
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irqmask ^ (irqmask & old_irqmask));
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mdp5_write(to_mdp5_kms(mdp_kms), REG_MDP5_INTR_EN, irqmask);
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}
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static void mdp5_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
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{
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struct mdp5_kms *mdp5_kms = container_of(irq, struct mdp5_kms, error_handler);
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static DEFINE_RATELIMIT_STATE(rs, 5*HZ, 1);
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extern bool dumpstate;
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DRM_ERROR_RATELIMITED("errors: %08x\n", irqstatus);
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if (dumpstate && __ratelimit(&rs)) {
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struct drm_printer p = drm_info_printer(mdp5_kms->dev->dev);
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drm_state_dump(mdp5_kms->dev, &p);
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if (mdp5_kms->smp)
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mdp5_smp_dump(mdp5_kms->smp, &p);
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}
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}
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void mdp5_irq_preinstall(struct msm_kms *kms)
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{
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struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
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struct device *dev = &mdp5_kms->pdev->dev;
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pm_runtime_get_sync(dev);
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mdp5_write(mdp5_kms, REG_MDP5_INTR_CLEAR, 0xffffffff);
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mdp5_write(mdp5_kms, REG_MDP5_INTR_EN, 0x00000000);
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pm_runtime_put_sync(dev);
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}
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int mdp5_irq_postinstall(struct msm_kms *kms)
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{
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struct mdp_kms *mdp_kms = to_mdp_kms(kms);
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struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);
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struct device *dev = &mdp5_kms->pdev->dev;
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struct mdp_irq *error_handler = &mdp5_kms->error_handler;
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error_handler->irq = mdp5_irq_error_handler;
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error_handler->irqmask = MDP5_IRQ_INTF0_UNDER_RUN |
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MDP5_IRQ_INTF1_UNDER_RUN |
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MDP5_IRQ_INTF2_UNDER_RUN |
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MDP5_IRQ_INTF3_UNDER_RUN;
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pm_runtime_get_sync(dev);
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mdp_irq_register(mdp_kms, error_handler);
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pm_runtime_put_sync(dev);
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return 0;
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}
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void mdp5_irq_uninstall(struct msm_kms *kms)
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{
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struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
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struct device *dev = &mdp5_kms->pdev->dev;
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pm_runtime_get_sync(dev);
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mdp5_write(mdp5_kms, REG_MDP5_INTR_EN, 0x00000000);
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pm_runtime_put_sync(dev);
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}
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irqreturn_t mdp5_irq(struct msm_kms *kms)
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{
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struct mdp_kms *mdp_kms = to_mdp_kms(kms);
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struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);
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struct drm_device *dev = mdp5_kms->dev;
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struct drm_crtc *crtc;
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uint32_t status, enable;
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enable = mdp5_read(mdp5_kms, REG_MDP5_INTR_EN);
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status = mdp5_read(mdp5_kms, REG_MDP5_INTR_STATUS) & enable;
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mdp5_write(mdp5_kms, REG_MDP5_INTR_CLEAR, status);
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VERB("status=%08x", status);
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mdp_dispatch_irqs(mdp_kms, status);
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drm_for_each_crtc(crtc, dev)
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if (status & mdp5_crtc_vblank(crtc))
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drm_crtc_handle_vblank(crtc);
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return IRQ_HANDLED;
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}
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int mdp5_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
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{
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struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
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struct device *dev = &mdp5_kms->pdev->dev;
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pm_runtime_get_sync(dev);
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mdp_update_vblank_mask(to_mdp_kms(kms),
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mdp5_crtc_vblank(crtc), true);
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pm_runtime_put_sync(dev);
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return 0;
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}
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void mdp5_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
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{
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struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
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struct device *dev = &mdp5_kms->pdev->dev;
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pm_runtime_get_sync(dev);
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mdp_update_vblank_mask(to_mdp_kms(kms),
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mdp5_crtc_vblank(crtc), false);
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pm_runtime_put_sync(dev);
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}
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