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 /kms++/src | |
| 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>
Diffstat (limited to 'kms++/src')
| -rw-r--r-- | kms++/src/card.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
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; |