2 * Copyright (C) 2013 Red Hat
3 * Author: Rob Clark <robdclark@gmail.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
18 #include <linux/irq.h>
20 #include <drm/drm_print.h>
25 void mdp5_set_irqmask(struct mdp_kms *mdp_kms, uint32_t irqmask,
28 mdp5_write(to_mdp5_kms(mdp_kms), REG_MDP5_INTR_CLEAR,
29 irqmask ^ (irqmask & old_irqmask));
30 mdp5_write(to_mdp5_kms(mdp_kms), REG_MDP5_INTR_EN, irqmask);
33 static void mdp5_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
35 struct mdp5_kms *mdp5_kms = container_of(irq, struct mdp5_kms, error_handler);
36 static DEFINE_RATELIMIT_STATE(rs, 5*HZ, 1);
37 extern bool dumpstate;
39 DRM_ERROR_RATELIMITED("errors: %08x\n", irqstatus);
41 if (dumpstate && __ratelimit(&rs)) {
42 struct drm_printer p = drm_info_printer(mdp5_kms->dev->dev);
43 drm_state_dump(mdp5_kms->dev, &p);
45 mdp5_smp_dump(mdp5_kms->smp, &p);
49 void mdp5_irq_preinstall(struct msm_kms *kms)
51 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
52 struct device *dev = &mdp5_kms->pdev->dev;
54 pm_runtime_get_sync(dev);
55 mdp5_write(mdp5_kms, REG_MDP5_INTR_CLEAR, 0xffffffff);
56 mdp5_write(mdp5_kms, REG_MDP5_INTR_EN, 0x00000000);
57 pm_runtime_put_sync(dev);
60 int mdp5_irq_postinstall(struct msm_kms *kms)
62 struct mdp_kms *mdp_kms = to_mdp_kms(kms);
63 struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);
64 struct device *dev = &mdp5_kms->pdev->dev;
65 struct mdp_irq *error_handler = &mdp5_kms->error_handler;
67 error_handler->irq = mdp5_irq_error_handler;
68 error_handler->irqmask = MDP5_IRQ_INTF0_UNDER_RUN |
69 MDP5_IRQ_INTF1_UNDER_RUN |
70 MDP5_IRQ_INTF2_UNDER_RUN |
71 MDP5_IRQ_INTF3_UNDER_RUN;
73 pm_runtime_get_sync(dev);
74 mdp_irq_register(mdp_kms, error_handler);
75 pm_runtime_put_sync(dev);
80 void mdp5_irq_uninstall(struct msm_kms *kms)
82 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
83 struct device *dev = &mdp5_kms->pdev->dev;
85 pm_runtime_get_sync(dev);
86 mdp5_write(mdp5_kms, REG_MDP5_INTR_EN, 0x00000000);
87 pm_runtime_put_sync(dev);
90 irqreturn_t mdp5_irq(struct msm_kms *kms)
92 struct mdp_kms *mdp_kms = to_mdp_kms(kms);
93 struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);
94 struct drm_device *dev = mdp5_kms->dev;
95 struct msm_drm_private *priv = dev->dev_private;
97 uint32_t status, enable;
99 enable = mdp5_read(mdp5_kms, REG_MDP5_INTR_EN);
100 status = mdp5_read(mdp5_kms, REG_MDP5_INTR_STATUS) & enable;
101 mdp5_write(mdp5_kms, REG_MDP5_INTR_CLEAR, status);
103 VERB("status=%08x", status);
105 mdp_dispatch_irqs(mdp_kms, status);
107 for (id = 0; id < priv->num_crtcs; id++)
108 if (status & mdp5_crtc_vblank(priv->crtcs[id]))
109 drm_handle_vblank(dev, id);
114 int mdp5_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
116 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
117 struct device *dev = &mdp5_kms->pdev->dev;
119 pm_runtime_get_sync(dev);
120 mdp_update_vblank_mask(to_mdp_kms(kms),
121 mdp5_crtc_vblank(crtc), true);
122 pm_runtime_put_sync(dev);
127 void mdp5_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
129 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
130 struct device *dev = &mdp5_kms->pdev->dev;
132 pm_runtime_get_sync(dev);
133 mdp_update_vblank_mask(to_mdp_kms(kms),
134 mdp5_crtc_vblank(crtc), false);
135 pm_runtime_put_sync(dev);