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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-07-13 16:28:15 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2011-07-25 12:27:05 +0100 |
| commit | f1bece7fde9820a99c14d4db46ef071000e4ba47 (patch) | |
| tree | 31a7e243cd9bf1f3c4a81e49b40682e5bef2151c /drivers/gpu | |
| parent | edc02bffbdcd92086f5cc9d715143e51acfa90ee (diff) | |
| download | blackbird-op-linux-f1bece7fde9820a99c14d4db46ef071000e4ba47.tar.gz blackbird-op-linux-f1bece7fde9820a99c14d4db46ef071000e4ba47.zip | |
drm/radeon: ATOM Endian fix for atombios_crtc_program_pll()
v6 of the structure was programmed incorrectly:
args.v6.ulCrtcPclkFreq.ulPixelClock = cpu_to_le32(clock / 10);
ulPixelClock is a 24-bit bitfield. This statement would thus
do a 32-bit swap of (clock / 10) and drop the top 8 bits which
are ... the LSB. Not what we want. Instead use masks & shifts.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_crtc.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 9541995e4b21..c742944d3805 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -764,7 +764,7 @@ static void atombios_crtc_set_dcpll(struct drm_crtc *crtc, } static void atombios_crtc_program_pll(struct drm_crtc *crtc, - int crtc_id, + u32 crtc_id, int pll_id, u32 encoder_mode, u32 encoder_id, @@ -851,8 +851,7 @@ static void atombios_crtc_program_pll(struct drm_crtc *crtc, args.v5.ucPpll = pll_id; break; case 6: - args.v6.ulCrtcPclkFreq.ucCRTC = crtc_id; - args.v6.ulCrtcPclkFreq.ulPixelClock = cpu_to_le32(clock / 10); + args.v6.ulDispEngClkFreq = cpu_to_le32(crtc_id << 24 | clock / 10); args.v6.ucRefDiv = ref_div; args.v6.usFbDiv = cpu_to_le16(fb_div); args.v6.ulFbDivDecFrac = cpu_to_le32(frac_fb_div * 100000); |
