diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2020-08-06 05:17:59 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2020-08-10 09:44:27 +0300 |
| commit | 76b6ef85cded5e576dca6cd2840aeb0da9512287 (patch) | |
| tree | 03761b1ceefea21bf94634ccfe99e514e2f4e0d4 /kms++ | |
| 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
dev_minor() method on the Card object.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'kms++')
| -rw-r--r-- | kms++/inc/kms++/card.h | 2 | ||||
| -rw-r--r-- | kms++/src/card.cpp | 11 |
2 files changed, 13 insertions, 0 deletions
diff --git a/kms++/inc/kms++/card.h b/kms++/inc/kms++/card.h index 5c1cf7c..8af0969 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(); @@ -84,6 +85,7 @@ private: std::vector<Framebuffer*> m_framebuffers; int m_fd; + unsigned int m_minor; bool m_is_master; bool m_has_atomic; 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; |