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| author | Vincent Abriou <vincent.abriou@st.com> | 2015-06-04 13:59:02 +0200 |
|---|---|---|
| committer | Benjamin Gaignard <benjamin.gaignard@linaro.org> | 2015-06-08 15:28:28 +0200 |
| commit | c58d6d1b6652b0a8db4aef7e93fb21ee869b5387 (patch) | |
| tree | d9b6092283181a07054e043eb978b8c1d89f89c9 /drivers/gpu/drm/sti/sti_vtg.c | |
| parent | 8661532a6cf841fdab20d7e1868e6fd99a226d32 (diff) | |
| download | blackbird-obmc-linux-c58d6d1b6652b0a8db4aef7e93fb21ee869b5387.tar.gz blackbird-obmc-linux-c58d6d1b6652b0a8db4aef7e93fb21ee869b5387.zip | |
drm/sti: vtg fix CEA-861E video format timing error
HDMI analyzer tests showed that Vsync and Hsync signal were not
compliant with the HDMI protocol.
HDMI_DELAY should be taken into account in the VTG Vsync
programming to reflect the 6 pixels shift introduced in the VTG
Hsync programming.
Signed-off-by: Vincent Abriou <vincent.abriou@st.com>
Diffstat (limited to 'drivers/gpu/drm/sti/sti_vtg.c')
| -rw-r--r-- | drivers/gpu/drm/sti/sti_vtg.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/sti/sti_vtg.c b/drivers/gpu/drm/sti/sti_vtg.c index df855baffe74..aa8097137701 100644 --- a/drivers/gpu/drm/sti/sti_vtg.c +++ b/drivers/gpu/drm/sti/sti_vtg.c @@ -173,8 +173,11 @@ static void vtg_set_mode(struct sti_vtg *vtg, tmp |= 1; writel(tmp, vtg->regs + VTG_TOP_V_VD_1); writel(tmp, vtg->regs + VTG_BOT_V_VD_1); - writel(0, vtg->regs + VTG_TOP_V_HD_1); - writel(0, vtg->regs + VTG_BOT_V_HD_1); + + tmp = HDMI_DELAY << 16; + tmp |= HDMI_DELAY; + writel(tmp, vtg->regs + VTG_TOP_V_HD_1); + writel(tmp, vtg->regs + VTG_BOT_V_HD_1); /* prepare VTG set 2 for for HD DCS */ tmp = (mode->hsync_end - mode->hsync_start) << 16; |
