1 #include <cassert>
2 #include <stdexcept>
3
4 #include <xf86drm.h>
5 #include <xf86drmMode.h>
6
7 #include <kms++/kms++.h>
8
9 #ifndef DRM_CLIENT_CAP_ATOMIC
10
11 #define DRM_MODE_ATOMIC_TEST_ONLY 0
12 #define DRM_MODE_ATOMIC_NONBLOCK 0
13
14 struct _drmModeAtomicReq;
15 typedef struct _drmModeAtomicReq* drmModeAtomicReqPtr;
16
drmModeAtomicAlloc()17 static inline drmModeAtomicReqPtr drmModeAtomicAlloc()
18 {
19 return 0;
20 }
drmModeAtomicFree(drmModeAtomicReqPtr)21 static inline void drmModeAtomicFree(drmModeAtomicReqPtr)
22 {
23 }
drmModeAtomicAddProperty(drmModeAtomicReqPtr,uint32_t,uint32_t,uint64_t)24 static inline int drmModeAtomicAddProperty(drmModeAtomicReqPtr, uint32_t, uint32_t, uint64_t)
25 {
26 return 0;
27 }
drmModeAtomicCommit(int,drmModeAtomicReqPtr,int,void *)28 static inline int drmModeAtomicCommit(int, drmModeAtomicReqPtr, int, void*)
29 {
30 return 0;
31 }
32
33 #endif // DRM_CLIENT_CAP_ATOMIC
34
35 using namespace std;
36
37 namespace kms
38 {
AtomicReq(Card & card)39 AtomicReq::AtomicReq(Card& card)
40 : m_card(card)
41 {
42 assert(card.has_atomic());
43 m_req = drmModeAtomicAlloc();
44 }
45
~AtomicReq()46 AtomicReq::~AtomicReq()
47 {
48 drmModeAtomicFree(m_req);
49 }
50
add(uint32_t ob_id,uint32_t prop_id,uint64_t value)51 void AtomicReq::add(uint32_t ob_id, uint32_t prop_id, uint64_t value)
52 {
53 int r = drmModeAtomicAddProperty(m_req, ob_id, prop_id, value);
54 if (r <= 0)
55 throw std::invalid_argument("foo");
56 }
57
add(DrmPropObject * ob,Property * prop,uint64_t value)58 void AtomicReq::add(DrmPropObject* ob, Property* prop, uint64_t value)
59 {
60 add(ob->id(), prop->id(), value);
61 }
62
add(kms::DrmPropObject * ob,const string & prop,uint64_t value)63 void AtomicReq::add(kms::DrmPropObject* ob, const string& prop, uint64_t value)
64 {
65 Property* p = ob->get_prop(prop);
66
67 if (!p)
68 throw runtime_error("Property not found");
69
70 add(ob, p, value);
71 }
72
add(kms::DrmPropObject * ob,const map<string,uint64_t> & values)73 void AtomicReq::add(kms::DrmPropObject* ob, const map<string, uint64_t>& values)
74 {
75 for (const auto& kvp : values)
76 add(ob, kvp.first, kvp.second);
77 }
78
add_display(Connector * conn,Crtc * crtc,Blob * videomode,Plane * primary,Framebuffer * fb)79 void AtomicReq::add_display(Connector* conn, Crtc* crtc, Blob* videomode, Plane* primary, Framebuffer* fb)
80 {
81 add(conn, {
82 { "CRTC_ID", crtc->id() },
83 });
84
85 add(crtc, {
86 { "ACTIVE", 1 },
87 { "MODE_ID", videomode->id() },
88 });
89
90 add(primary, {
91 { "FB_ID", fb->id() },
92 { "CRTC_ID", crtc->id() },
93 { "SRC_X", 0 << 16 },
94 { "SRC_Y", 0 << 16 },
95 { "SRC_W", fb->width() << 16 },
96 { "SRC_H", fb->height() << 16 },
97 { "CRTC_X", 0 },
98 { "CRTC_Y", 0 },
99 { "CRTC_W", fb->width() },
100 { "CRTC_H", fb->height() },
101 });
102 }
103
test(bool allow_modeset)104 int AtomicReq::test(bool allow_modeset)
105 {
106 uint32_t flags = DRM_MODE_ATOMIC_TEST_ONLY;
107
108 if (allow_modeset)
109 flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
110
111 return drmModeAtomicCommit(m_card.fd(), m_req, flags, 0);
112 }
113
commit(void * data,bool allow_modeset)114 int AtomicReq::commit(void* data, bool allow_modeset)
115 {
116 uint32_t flags = DRM_MODE_PAGE_FLIP_EVENT | DRM_MODE_ATOMIC_NONBLOCK;
117
118 if (allow_modeset)
119 flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
120
121 return drmModeAtomicCommit(m_card.fd(), m_req, flags, data);
122 }
123
commit_sync(bool allow_modeset)124 int AtomicReq::commit_sync(bool allow_modeset)
125 {
126 uint32_t flags = 0;
127
128 if (allow_modeset)
129 flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
130
131 return drmModeAtomicCommit(m_card.fd(), m_req, flags, 0);
132 }
133 } // namespace kms
134