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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() { return 0; }
drmModeAtomicFree(drmModeAtomicReqPtr)18 static inline void drmModeAtomicFree(drmModeAtomicReqPtr) { }
drmModeAtomicAddProperty(drmModeAtomicReqPtr,uint32_t,uint32_t,uint64_t)19 static inline int drmModeAtomicAddProperty(drmModeAtomicReqPtr, uint32_t, uint32_t, uint64_t) { return 0; }
drmModeAtomicCommit(int,drmModeAtomicReqPtr,int,void *)20 static inline int drmModeAtomicCommit(int, drmModeAtomicReqPtr, int, void*) { return 0; }
21 
22 #endif // DRM_CLIENT_CAP_ATOMIC
23 
24 using namespace std;
25 
26 namespace kms
27 {
AtomicReq(Card & card)28 AtomicReq::AtomicReq(Card& card)
29 	: m_card(card)
30 {
31 	assert(card.has_atomic());
32 	m_req = drmModeAtomicAlloc();
33 }
34 
~AtomicReq()35 AtomicReq::~AtomicReq()
36 {
37 	drmModeAtomicFree(m_req);
38 }
39 
add(uint32_t ob_id,uint32_t prop_id,uint64_t value)40 void AtomicReq::add(uint32_t ob_id, uint32_t prop_id, uint64_t value)
41 {
42 	int r = drmModeAtomicAddProperty(m_req, ob_id, prop_id, value);
43 	if (r <= 0)
44 		throw std::invalid_argument("foo");
45 }
46 
add(DrmPropObject * ob,Property * prop,uint64_t value)47 void AtomicReq::add(DrmPropObject* ob, Property *prop, uint64_t value)
48 {
49 	add(ob->id(), prop->id(), value);
50 }
51 
add(kms::DrmPropObject * ob,const string & prop,uint64_t value)52 void AtomicReq::add(kms::DrmPropObject* ob, const string& prop, uint64_t value)
53 {
54 	add(ob, ob->get_prop(prop), value);
55 }
56 
add(kms::DrmPropObject * ob,const map<string,uint64_t> & values)57 void AtomicReq::add(kms::DrmPropObject* ob, const map<string, uint64_t>& values)
58 {
59 	for(const auto& kvp : values)
60 		add(ob, kvp.first, kvp.second);
61 }
62 
add_display(Connector * conn,Crtc * crtc,Blob * videomode,Plane * primary,Framebuffer * fb)63 void AtomicReq::add_display(Connector* conn, Crtc* crtc, Blob* videomode, Plane* primary, Framebuffer* fb)
64 {
65 	add(conn, {
66 		    { "CRTC_ID", crtc->id() },
67 	    });
68 
69 	add(crtc, {
70 		    { "ACTIVE", 1 },
71 		    { "MODE_ID", videomode->id() },
72 	    });
73 
74 	add(primary, {
75 		    { "FB_ID", fb->id() },
76 		    { "CRTC_ID", crtc->id() },
77 		    { "SRC_X", 0 << 16 },
78 		    { "SRC_Y", 0 << 16 },
79 		    { "SRC_W", fb->width() << 16 },
80 		    { "SRC_H", fb->height() << 16 },
81 		    { "CRTC_X", 0 },
82 		    { "CRTC_Y", 0 },
83 		    { "CRTC_W", fb->width() },
84 		    { "CRTC_H", fb->height() },
85 	    });
86 }
87 
test(bool allow_modeset)88 int AtomicReq::test(bool allow_modeset)
89 {
90 	uint32_t flags = DRM_MODE_ATOMIC_TEST_ONLY;
91 
92 	if (allow_modeset)
93 		flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
94 
95 	return drmModeAtomicCommit(m_card.fd(), m_req, flags, 0);
96 }
97 
commit(void * data,bool allow_modeset)98 int AtomicReq::commit(void* data, bool allow_modeset)
99 {
100 	uint32_t flags = DRM_MODE_PAGE_FLIP_EVENT | DRM_MODE_ATOMIC_NONBLOCK;
101 
102 	if (allow_modeset)
103 		flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
104 
105 	return drmModeAtomicCommit(m_card.fd(), m_req, flags, data);
106 }
107 
commit_sync(bool allow_modeset)108 int AtomicReq::commit_sync(bool allow_modeset)
109 {
110 	uint32_t flags = 0;
111 
112 	if (allow_modeset)
113 		flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
114 
115 	return drmModeAtomicCommit(m_card.fd(), m_req, flags, 0);
116 }
117 }
118