cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c

/*
 * Copyright (C) 2013 Red Hat
 * Author: Rob Clark <robdclark@gmail.com>
 *
 * 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/>.
 */

#include <drm/drm_print.h>

#include "msm_drv.h"
#include "mdp4_kms.h"


void mdp4_set_irqmask(struct mdp_kms *mdp_kms, uint32_t irqmask, uint32_t old_irqmask) { mdp4_write(to_mdp4_kms(mdp_kms), REG_MDP4_INTR_CLEAR, irqmask ^ (irqmask & old_irqmask)); mdp4_write(to_mdp4_kms(mdp_kms), REG_MDP4_INTR_ENABLE, irqmask); }

Contributors

PersonTokensPropCommitsCommitProp
Rob Clark2554.35%266.67%
Jilai Wang2145.65%133.33%
Total46100.00%3100.00%


static void mdp4_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus) { struct mdp4_kms *mdp4_kms = container_of(irq, struct mdp4_kms, error_handler); static DEFINE_RATELIMIT_STATE(rs, 5*HZ, 1); extern bool dumpstate; DRM_ERROR_RATELIMITED("errors: %08x\n", irqstatus); if (dumpstate && __ratelimit(&rs)) { struct drm_printer p = drm_info_printer(mdp4_kms->dev->dev); drm_state_dump(mdp4_kms->dev, &p); } }

Contributors

PersonTokensPropCommitsCommitProp
Rob Clark87100.00%4100.00%
Total87100.00%4100.00%


void mdp4_irq_preinstall(struct msm_kms *kms) { struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms)); mdp4_enable(mdp4_kms); mdp4_write(mdp4_kms, REG_MDP4_INTR_CLEAR, 0xffffffff); mdp4_write(mdp4_kms, REG_MDP4_INTR_ENABLE, 0x00000000); mdp4_disable(mdp4_kms); }

Contributors

PersonTokensPropCommitsCommitProp
Rob Clark51100.00%3100.00%
Total51100.00%3100.00%


int mdp4_irq_postinstall(struct msm_kms *kms) { struct mdp_kms *mdp_kms = to_mdp_kms(kms); struct mdp4_kms *mdp4_kms = to_mdp4_kms(mdp_kms); struct mdp_irq *error_handler = &mdp4_kms->error_handler; error_handler->irq = mdp4_irq_error_handler; error_handler->irqmask = MDP4_IRQ_PRIMARY_INTF_UDERRUN | MDP4_IRQ_EXTERNAL_INTF_UDERRUN; mdp_irq_register(mdp_kms, error_handler); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Rob Clark64100.00%2100.00%
Total64100.00%2100.00%


void mdp4_irq_uninstall(struct msm_kms *kms) { struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms)); mdp4_enable(mdp4_kms); mdp4_write(mdp4_kms, REG_MDP4_INTR_ENABLE, 0x00000000); mdp4_disable(mdp4_kms); }

Contributors

PersonTokensPropCommitsCommitProp
Rob Clark42100.00%3100.00%
Total42100.00%3100.00%


irqreturn_t mdp4_irq(struct msm_kms *kms) { struct mdp_kms *mdp_kms = to_mdp_kms(kms); struct mdp4_kms *mdp4_kms = to_mdp4_kms(mdp_kms); struct drm_device *dev = mdp4_kms->dev; struct msm_drm_private *priv = dev->dev_private; unsigned int id; uint32_t status, enable; enable = mdp4_read(mdp4_kms, REG_MDP4_INTR_ENABLE); status = mdp4_read(mdp4_kms, REG_MDP4_INTR_STATUS) & enable; mdp4_write(mdp4_kms, REG_MDP4_INTR_CLEAR, status); VERB("status=%08x", status); mdp_dispatch_irqs(mdp_kms, status); for (id = 0; id < priv->num_crtcs; id++) if (status & mdp4_crtc_vblank(priv->crtcs[id])) drm_handle_vblank(dev, id); return IRQ_HANDLED; }

Contributors

PersonTokensPropCommitsCommitProp
Rob Clark12690.65%375.00%
Jilai Wang139.35%125.00%
Total139100.00%4100.00%


int mdp4_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc) { struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms)); mdp4_enable(mdp4_kms); mdp_update_vblank_mask(to_mdp_kms(kms), mdp4_crtc_vblank(crtc), true); mdp4_disable(mdp4_kms); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Rob Clark3358.93%266.67%
Hai Li2341.07%133.33%
Total56100.00%3100.00%


void mdp4_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc) { struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms)); mdp4_enable(mdp4_kms); mdp_update_vblank_mask(to_mdp_kms(kms), mdp4_crtc_vblank(crtc), false); mdp4_disable(mdp4_kms); }

Contributors

PersonTokensPropCommitsCommitProp
Rob Clark3056.60%266.67%
Hai Li2343.40%133.33%
Total53100.00%3100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Rob Clark46885.40%675.00%
Hai Li468.39%112.50%
Jilai Wang346.20%112.50%
Total548100.00%8100.00%
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