diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2017-12-01 21:45:49 +0200 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2020-08-06 01:59:56 +0300 |
| commit | 740c330f4c8ee2e0eb1b5b3dfa44f33ac7a68c7a (patch) | |
| tree | 8ff6addd96c45d69c318da527f40e307a550e2d1 | |
| parent | 38bee3092f2d477f1baebfcae464f888d3d04bbe (diff) | |
card: Add a method to retrieve the device minor
The device minor number is needed to access the debugfs directory
corresponding to the device. Make it available to users through a
get_minor() method on the Card object.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
| -rw-r--r-- | kms++/inc/kms++/card.h | 3 | ||||
| -rw-r--r-- | kms++/src/card.cpp | 11 | ||||
| -rw-r--r-- | py/pykms/pykmsbase.cpp | 1 |
3 files changed, 15 insertions, 0 deletions
diff --git a/kms++/inc/kms++/card.h b/kms++/inc/kms++/card.h index 5c1cf7c..0a11747 100644 --- a/kms++/inc/kms++/card.h +++ b/kms++/inc/kms++/card.h @@ -35,6 +35,7 @@ public: Card& operator=(const Card& other) = delete; int fd() const { return m_fd; } + unsigned int dev_minor() const { return m_minor; } void drop_master(); @@ -84,7 +85,9 @@ private: std::vector<Framebuffer*> m_framebuffers; int m_fd; + unsigned int m_minor; bool m_is_master; + std::string m_device; bool m_has_atomic; bool m_has_universal_planes; diff --git a/kms++/src/card.cpp b/kms++/src/card.cpp index 527aca6..3a7ab70 100644 --- a/kms++/src/card.cpp +++ b/kms++/src/card.cpp @@ -9,6 +9,10 @@ #include <algorithm> #include <glob.h> +#include <sys/stat.h> +#include <sys/sysmacros.h> +#include <sys/types.h> + #include <xf86drm.h> #include <xf86drmMode.h> @@ -183,8 +187,15 @@ void Card::setup() m_version.desc = string(ver->desc, ver->desc_len); drmFreeVersion(ver); + struct stat stats; int r; + r = fstat(m_fd, &stats); + if (r < 0) + throw invalid_argument("Can't stat device (" + string(strerror(errno)) + ")"); + + m_minor = minor(stats.st_dev); + r = drmSetMaster(m_fd); m_is_master = r == 0; diff --git a/py/pykms/pykmsbase.cpp b/py/pykms/pykmsbase.cpp index c039833..fc72d05 100644 --- a/py/pykms/pykmsbase.cpp +++ b/py/pykms/pykmsbase.cpp @@ -24,6 +24,7 @@ void init_pykmsbase(py::module &m) .def(py::init<const string&>()) .def(py::init<const string&, uint32_t>()) .def_property_readonly("fd", &Card::fd) + .def_property_readonly("minor", &Card::dev_minor) .def_property_readonly("get_first_connected_connector", &Card::get_first_connected_connector) // XXX pybind11 can't handle vector<T*> where T is non-copyable, and complains: |