diff options
| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2019-01-11 12:09:40 +0200 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2019-01-14 09:27:28 +0200 |
| commit | 82b200e00c2c7dbeae108b21b2bba39305300d4a (patch) | |
| tree | 9b2c3970fa97256a15ce520fdb0da0d4682036ac /kms++/src | |
| parent | 6126525e3921d2ccc54ca393e6a24d4bd0f08429 (diff) | |
card: add open_modesetting_card()
Add open_modesetting_card() which iterates the DRM cards and returns the
first one that has crtcs and connectors.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'kms++/src')
| -rw-r--r-- | kms++/src/card.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/kms++/src/card.cpp b/kms++/src/card.cpp index 4632f22..04750af 100644 --- a/kms++/src/card.cpp +++ b/kms++/src/card.cpp @@ -7,6 +7,7 @@ #include <algorithm> #include <cerrno> #include <algorithm> +#include <sys/stat.h> #include <xf86drm.h> #include <xf86drmMode.h> @@ -18,6 +19,25 @@ using namespace std; namespace kms { +unique_ptr<Card> Card::open_modesetting_card() +{ + for (uint32_t i = 0; ; ++i) { + string path = "/dev/dri/card" + to_string(i); + + struct stat buffer; + if (stat(path.c_str(), &buffer)) + break; + + unique_ptr<Card> card = unique_ptr<Card>(new Card(path)); + + if (card->get_connectors().size() > 0 && + card->get_crtcs().size() > 0) + return card; + } + + throw runtime_error("No modesetting DRM card found"); +} + static int open_device_by_path(string path) { int fd = open(path.c_str(), O_RDWR | O_CLOEXEC); |