1 /*
2 * Copyright (C) 2013 Red Hat
3 * Author: Rob Clark <robdclark@gmail.com>
4 *
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.
8 *
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
12 * more details.
13 *
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/>.
16 */
17
18
19 #include "msm_drv.h"
20 #include "mdp5_kms.h"
21
mdp5_set_irqmask(struct mdp_kms * mdp_kms,uint32_t irqmask)22 void mdp5_set_irqmask(struct mdp_kms *mdp_kms, uint32_t irqmask)
23 {
24 mdp5_write(to_mdp5_kms(mdp_kms), REG_MDP5_INTR_EN, irqmask);
25 }
26
mdp5_irq_error_handler(struct mdp_irq * irq,uint32_t irqstatus)27 static void mdp5_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
28 {
29 DRM_ERROR("errors: %08x\n", irqstatus);
30 }
31
mdp5_irq_preinstall(struct msm_kms * kms)32 void mdp5_irq_preinstall(struct msm_kms *kms)
33 {
34 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
35 mdp5_write(mdp5_kms, REG_MDP5_INTR_CLEAR, 0xffffffff);
36 }
37
mdp5_irq_postinstall(struct msm_kms * kms)38 int mdp5_irq_postinstall(struct msm_kms *kms)
39 {
40 struct mdp_kms *mdp_kms = to_mdp_kms(kms);
41 struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);
42 struct mdp_irq *error_handler = &mdp5_kms->error_handler;
43
44 error_handler->irq = mdp5_irq_error_handler;
45 error_handler->irqmask = MDP5_IRQ_INTF0_UNDER_RUN |
46 MDP5_IRQ_INTF1_UNDER_RUN |
47 MDP5_IRQ_INTF2_UNDER_RUN |
48 MDP5_IRQ_INTF3_UNDER_RUN;
49
50 mdp_irq_register(mdp_kms, error_handler);
51
52 return 0;
53 }
54
mdp5_irq_uninstall(struct msm_kms * kms)55 void mdp5_irq_uninstall(struct msm_kms *kms)
56 {
57 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
58 mdp5_write(mdp5_kms, REG_MDP5_INTR_EN, 0x00000000);
59 }
60
mdp5_irq_mdp(struct mdp_kms * mdp_kms)61 static void mdp5_irq_mdp(struct mdp_kms *mdp_kms)
62 {
63 struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);
64 struct drm_device *dev = mdp5_kms->dev;
65 struct msm_drm_private *priv = dev->dev_private;
66 unsigned int id;
67 uint32_t status;
68
69 status = mdp5_read(mdp5_kms, REG_MDP5_INTR_STATUS);
70 mdp5_write(mdp5_kms, REG_MDP5_INTR_CLEAR, status);
71
72 VERB("status=%08x", status);
73
74 mdp_dispatch_irqs(mdp_kms, status);
75
76 for (id = 0; id < priv->num_crtcs; id++)
77 if (status & mdp5_crtc_vblank(priv->crtcs[id]))
78 drm_handle_vblank(dev, id);
79 }
80
mdp5_irq(struct msm_kms * kms)81 irqreturn_t mdp5_irq(struct msm_kms *kms)
82 {
83 struct mdp_kms *mdp_kms = to_mdp_kms(kms);
84 struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);
85 uint32_t intr;
86
87 intr = mdp5_read(mdp5_kms, REG_MDP5_HW_INTR_STATUS);
88
89 VERB("intr=%08x", intr);
90
91 if (intr & MDP5_HW_INTR_STATUS_INTR_MDP)
92 mdp5_irq_mdp(mdp_kms);
93
94 if (intr & MDP5_HW_INTR_STATUS_INTR_HDMI)
95 hdmi_irq(0, mdp5_kms->hdmi);
96
97 return IRQ_HANDLED;
98 }
99
mdp5_enable_vblank(struct msm_kms * kms,struct drm_crtc * crtc)100 int mdp5_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
101 {
102 mdp_update_vblank_mask(to_mdp_kms(kms),
103 mdp5_crtc_vblank(crtc), true);
104 return 0;
105 }
106
mdp5_disable_vblank(struct msm_kms * kms,struct drm_crtc * crtc)107 void mdp5_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
108 {
109 mdp_update_vblank_mask(to_mdp_kms(kms),
110 mdp5_crtc_vblank(crtc), false);
111 }
112