diff options
| author | Stefan Potyra <sistpoty@ubuntu.com> | 2011-10-20 14:44:44 -0700 |
|---|---|---|
| committer | Jeremy Huddleston <jeremyhu@apple.com> | 2011-10-20 14:50:10 -0700 |
| commit | f5a8080f149a2f2658b7773ae7db7c67c52c4199 (patch) | |
| tree | 5739f9df36785d34a1a72ee4dceb9c06e78162f0 /src/alp_driver.c | |
| parent | 9fcfd1aa760023e449cbb8c1eebd0bb570a6aacb (diff) | |
Limit the maximul pitch of GD5436 and GD5446
Limit the maximum supported pitch of the GD5446 to 4088, since the internal
pitch register is only 9 bit (and contains the pitch left shifted by 3).
See https://bugs.freedesktop.org/show_bug.cgi?id=23775
Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
Diffstat (limited to 'src/alp_driver.c')
| -rw-r--r-- | src/alp_driver.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/alp_driver.c b/src/alp_driver.c index e773471..3153484 100644 --- a/src/alp_driver.c +++ b/src/alp_driver.c @@ -405,6 +405,8 @@ GetAccelPitchValues(ScrnInfoPtr pScrn) { int *linePitches = NULL; int i, n = 0; + int max_pitch; + CirPtr pCir = CIRPTR(pScrn); /* XXX ajv - 512, 576, and 1536 may not be supported @@ -421,8 +423,21 @@ GetAccelPitchValues(ScrnInfoPtr pScrn) 1280, 1536, 1600, 1920, 2048, 0 }; #endif + switch (pCir->Chipset) { + case PCI_CHIP_GD5436: + case PCI_CHIP_GD5446: + max_pitch = 0x1ff << 3; + break; + + default: + /* FIXME max_pitch for other chipsets? */ + max_pitch = (pScrn->bitsPerPixel / 8) * 2048; + break; + } + for (i = 0; accelWidths[i] != 0; i++) { - if (accelWidths[i] % pCir->Rounding == 0) { + if ((accelWidths[i] % pCir->Rounding == 0) + && ((accelWidths[i] * pScrn->bitsPerPixel / 8) <= max_pitch)) { n++; linePitches = xnfrealloc(linePitches, n * sizeof(int)); linePitches[n - 1] = accelWidths[i]; |