caab277b1d
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license 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 you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 503 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Enrico Weigelt <info@metux.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
111 lines
2.9 KiB
C
111 lines
2.9 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 <drm/drm_print.h>
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#include "msm_drv.h"
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#include "mdp4_kms.h"
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void mdp4_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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mdp4_write(to_mdp4_kms(mdp_kms), REG_MDP4_INTR_CLEAR,
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irqmask ^ (irqmask & old_irqmask));
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mdp4_write(to_mdp4_kms(mdp_kms), REG_MDP4_INTR_ENABLE, irqmask);
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}
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static void mdp4_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
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{
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struct mdp4_kms *mdp4_kms = container_of(irq, struct mdp4_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(mdp4_kms->dev->dev);
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drm_state_dump(mdp4_kms->dev, &p);
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}
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}
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void mdp4_irq_preinstall(struct msm_kms *kms)
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{
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struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
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mdp4_enable(mdp4_kms);
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mdp4_write(mdp4_kms, REG_MDP4_INTR_CLEAR, 0xffffffff);
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mdp4_write(mdp4_kms, REG_MDP4_INTR_ENABLE, 0x00000000);
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mdp4_disable(mdp4_kms);
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}
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int mdp4_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 mdp4_kms *mdp4_kms = to_mdp4_kms(mdp_kms);
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struct mdp_irq *error_handler = &mdp4_kms->error_handler;
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error_handler->irq = mdp4_irq_error_handler;
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error_handler->irqmask = MDP4_IRQ_PRIMARY_INTF_UDERRUN |
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MDP4_IRQ_EXTERNAL_INTF_UDERRUN;
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mdp_irq_register(mdp_kms, error_handler);
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return 0;
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}
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void mdp4_irq_uninstall(struct msm_kms *kms)
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{
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struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
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mdp4_enable(mdp4_kms);
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mdp4_write(mdp4_kms, REG_MDP4_INTR_ENABLE, 0x00000000);
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mdp4_disable(mdp4_kms);
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}
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irqreturn_t mdp4_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 mdp4_kms *mdp4_kms = to_mdp4_kms(mdp_kms);
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struct drm_device *dev = mdp4_kms->dev;
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struct msm_drm_private *priv = dev->dev_private;
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unsigned int id;
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uint32_t status, enable;
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enable = mdp4_read(mdp4_kms, REG_MDP4_INTR_ENABLE);
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status = mdp4_read(mdp4_kms, REG_MDP4_INTR_STATUS) & enable;
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mdp4_write(mdp4_kms, REG_MDP4_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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for (id = 0; id < priv->num_crtcs; id++)
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if (status & mdp4_crtc_vblank(priv->crtcs[id]))
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drm_handle_vblank(dev, id);
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return IRQ_HANDLED;
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}
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int mdp4_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
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{
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struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
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mdp4_enable(mdp4_kms);
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mdp_update_vblank_mask(to_mdp_kms(kms),
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mdp4_crtc_vblank(crtc), true);
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mdp4_disable(mdp4_kms);
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return 0;
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}
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void mdp4_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
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{
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struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
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mdp4_enable(mdp4_kms);
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mdp_update_vblank_mask(to_mdp_kms(kms),
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mdp4_crtc_vblank(crtc), false);
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mdp4_disable(mdp4_kms);
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}
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