From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c | 98 ++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 kernel/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c (limited to 'kernel/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c') diff --git a/kernel/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c b/kernel/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c new file mode 100644 index 000000000..7369ee7f0 --- /dev/null +++ b/kernel/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c @@ -0,0 +1,98 @@ +/* + * Copyright (C) 2013 Red Hat + * Author: Rob Clark + * + * 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 . + */ + + +#include "msm_drv.h" +#include "mdp4_kms.h" + +void mdp4_set_irqmask(struct mdp_kms *mdp_kms, uint32_t irqmask) +{ + mdp4_write(to_mdp4_kms(mdp_kms), REG_MDP4_INTR_ENABLE, irqmask); +} + +static void mdp4_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus) +{ + DRM_ERROR("errors: %08x\n", irqstatus); +} + +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); +} + +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; +} + +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); +} + +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; + + status = mdp4_read(mdp4_kms, REG_MDP4_INTR_STATUS); + 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; +} + +int mdp4_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc) +{ + mdp_update_vblank_mask(to_mdp_kms(kms), + mdp4_crtc_vblank(crtc), true); + return 0; +} + +void mdp4_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc) +{ + mdp_update_vblank_mask(to_mdp_kms(kms), + mdp4_crtc_vblank(crtc), false); +} -- cgit 1.2.3-korg