Eric Lee / smarc-ti-linux-kernel

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drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c 2.92 KB
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06c0dd96b   Rob Clark   drm/msm: add mdp5... 
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  /*
   * 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 "msm_drv.h"
  #include "mdp5_kms.h"
  
  void mdp5_set_irqmask(struct mdp_kms *mdp_kms, uint32_t irqmask)
  {
  	mdp5_write(to_mdp5_kms(mdp_kms), REG_MDP5_INTR_EN, irqmask);
  }
  
  static void mdp5_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
  {
  	DRM_ERROR("errors: %08x
  ", irqstatus);
  }
  
  void mdp5_irq_preinstall(struct msm_kms *kms)
  {
  	struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
  	mdp5_write(mdp5_kms, REG_MDP5_INTR_CLEAR, 0xffffffff);
  }
  
  int mdp5_irq_postinstall(struct msm_kms *kms)
  {
  	struct mdp_kms *mdp_kms = to_mdp_kms(kms);
  	struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);
  	struct mdp_irq *error_handler = &mdp5_kms->error_handler;
  
  	error_handler->irq = mdp5_irq_error_handler;
  	error_handler->irqmask = MDP5_IRQ_INTF0_UNDER_RUN |
  			MDP5_IRQ_INTF1_UNDER_RUN |
  			MDP5_IRQ_INTF2_UNDER_RUN |
  			MDP5_IRQ_INTF3_UNDER_RUN;
  
  	mdp_irq_register(mdp_kms, error_handler);
  
  	return 0;
  }
  
  void mdp5_irq_uninstall(struct msm_kms *kms)
  {
  	struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
  	mdp5_write(mdp5_kms, REG_MDP5_INTR_EN, 0x00000000);
  }
  
  static void mdp5_irq_mdp(struct mdp_kms *mdp_kms)
  {
  	struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);
  	struct drm_device *dev = mdp5_kms->dev;
  	struct msm_drm_private *priv = dev->dev_private;
  	unsigned int id;
  	uint32_t status;
  
  	status = mdp5_read(mdp5_kms, REG_MDP5_INTR_STATUS);
  	mdp5_write(mdp5_kms, REG_MDP5_INTR_CLEAR, status);
  
  	VERB("status=%08x", status);
7d8d9f670   Rob Clark   drm/msm/mdp4: cur... 
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  	mdp_dispatch_irqs(mdp_kms, status);
06c0dd96b   Rob Clark   drm/msm: add mdp5... 
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  	for (id = 0; id < priv->num_crtcs; id++)
  		if (status & mdp5_crtc_vblank(priv->crtcs[id]))
  			drm_handle_vblank(dev, id);
06c0dd96b   Rob Clark   drm/msm: add mdp5... 
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  }
  
  irqreturn_t mdp5_irq(struct msm_kms *kms)
  {
  	struct mdp_kms *mdp_kms = to_mdp_kms(kms);
  	struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);
  	uint32_t intr;
  
  	intr = mdp5_read(mdp5_kms, REG_MDP5_HW_INTR_STATUS);
  
  	VERB("intr=%08x", intr);
  
  	if (intr & MDP5_HW_INTR_STATUS_INTR_MDP)
  		mdp5_irq_mdp(mdp_kms);
  
  	if (intr & MDP5_HW_INTR_STATUS_INTR_HDMI)
  		hdmi_irq(0, mdp5_kms->hdmi);
  
  	return IRQ_HANDLED;
  }
  
  int mdp5_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
  {
  	mdp_update_vblank_mask(to_mdp_kms(kms),
  			mdp5_crtc_vblank(crtc), true);
  	return 0;
  }
  
  void mdp5_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
  {
  	mdp_update_vblank_mask(to_mdp_kms(kms),
  			mdp5_crtc_vblank(crtc), false);
  }