summaryrefslogtreecommitdiff
path: root/drivers/video/fbdev/core/fbmon.c
AgeCommit message (Collapse)Author
2015-08-20fbdev: fix cea_modes array sizeTomi Valkeinen
CEA defines 64 modes, indexed from 1 to 64. modedb has cea_modes arrays, which contains 64 entries. However, the code uses the CEA indices directly, i.e. the first mode is at cea_modes[1]. This means the array is one too short. This does not cause references to uninitialized memory as the code in fbmon only allows indexes up to 63, and the cea_modes does not contain an entry for the mode 64 so it could not be used in any case. However, the code contains a check 'if (idx > ARRAY_SIZE(cea_modes)', and while that check is a no-op as at that point idx cannot be >= 63, it upsets static checkers. Fix this by increasing the cea_array size to be 65, and change the code to allow mode 64. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
2015-06-16fbdev: propagate result of fb_videomode_from_videomode()Vladimir Murzin
fb_videomode_from_videomode() may fail, but of_get_fb_videomode() silently covers this fact. Instead, trow the error code to the caller. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-03-17fbdev: remove the unnecessary includes of ppc specific header filesKevin Hao
In the current kernel, we don't need to include these arch specific header files for ppc. Signed-off-by: Kevin Hao <haokexin@gmail.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-02-26video: fbdev: fix possible null dereferenceSudip Mukherjee
we were dereferencing edid first and the NULL check was after accessing that. now we are using edid only if we know that it is not NULL. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-01-15video: fbdev: Validate mode timing against monspecDavid Ung
fbmon may generate mode timings that are out of spec of the monitor. eg DELL U2410 has a max clock 170mhz but advertises a resolutions of 1920x1200@60 in its Standard Timings using 2byte code of D1 00. When this is looked up in the DMT table it gives it a 193mhz clock. Although the DELL monitor supports 1920x1200@60, it can only run with reduced timings at 154mhz or DMT id 0x44 which has no STD 2byte code. This patch checks to see if the mode can be supported by the monitor by comparing against monspecs.dclkmax. Signed-off-by: David Ung <davidu@nvidia.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-01-15video: fbdev: Check Standard Timing against DMTDavid Ung
Add the VESA Display Monitor Timing (DMT) table. During parsing of Standard Timings, it compare the 2 byte STD code with DMT to see what the VESA mode should be. If there is no entry in the vesa_modes table or no match found, it fallsback to the GTF timings. Signed-off-by: David Ung <davidu@nvidia.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-04-22video: Check EDID for HDMI connectionDavid Ung
Check EDID Vendor Specific Data Block bytes to see if the connection is HDMI and set FB_MISC_HDMI. Signed-off-by: David Ung <davidu@nvidia.com> Signed-off-by: Christopher Freeman <cfreeman@nvidia.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-04-17fbdev: move fbdev core files to separate directoryTomi Valkeinen
Instead of having fbdev framework core files at the root fbdev directory, mixed with random fbdev device drivers, move the fbdev core files to a separate core directory. This makes it much clearer which of the files are actually part of the fbdev framework, and which are part of device drivers. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Rob Clark <robdclark@gmail.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>