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| author | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2011-04-23 23:52:45 +0000 |
|---|---|---|
| committer | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2011-04-23 23:52:45 +0000 |
| commit | 2946294f9aa734efc5873ea2f34131d0a8c0f89a (patch) | |
| tree | 7c1ddd28ec675caf9338e88b5433bd47deda3d8e | |
| parent | 4d9fd0b72cd80624f9f5c6a4c69c503615bec370 (diff) | |
viafb: add X server compatibility mode
This patch adds a config option to be compatible with X servers like
OpenChrome. This is required as for example the X server does not
handle things like disabled IGAs/PLLs resulting in a potential
freeze on X startup. With this option disabled we can provide some
nice features like power management and not reinitializing the
hardware on every mode switch (taking long time, causing flickering).
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
| -rw-r--r-- | drivers/video/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/video/via/hw.c | 7 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 6bafb51bb437..4923b5ec0201 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -1607,6 +1607,17 @@ config FB_VIA_DIRECT_PROCFS correct output device configuration. Its use is strongly discouraged. +config FB_VIA_X_COMPATIBILITY + bool "X server compatibility" + depends on FB_VIA + default n + help + This option reduces the functionality (power saving, ...) of the + framebuffer to avoid negative impact on the OpenChrome X server. + If you use any X server other than fbdev you should enable this + otherwise it should be safe to disable it and allow using all + features. + endif config FB_NEOMAGIC diff --git a/drivers/video/via/hw.c b/drivers/video/via/hw.c index e5311474219f..104f3e16010f 100644 --- a/drivers/video/via/hw.c +++ b/drivers/video/via/hw.c @@ -2293,6 +2293,12 @@ int viafb_setmode(struct VideoModeTable *vmode_tbl, int video_bpp, clock.set_primary_clock_source(VIA_CLKSRC_X1, true); clock.set_secondary_clock_source(VIA_CLKSRC_X1, true); +#ifdef CONFIG_FB_VIA_X_COMPATIBILITY + clock.set_primary_pll_state(VIA_STATE_ON); + clock.set_primary_clock_state(VIA_STATE_ON); + clock.set_secondary_pll_state(VIA_STATE_ON); + clock.set_secondary_clock_state(VIA_STATE_ON); +#else if (viaparinfo->shared->iga1_devices) { clock.set_primary_pll_state(VIA_STATE_ON); clock.set_primary_clock_state(VIA_STATE_ON); @@ -2308,6 +2314,7 @@ int viafb_setmode(struct VideoModeTable *vmode_tbl, int video_bpp, clock.set_secondary_pll_state(VIA_STATE_OFF); clock.set_secondary_clock_state(VIA_STATE_OFF); } +#endif /*CONFIG_FB_VIA_X_COMPATIBILITY*/ via_set_state(devices, VIA_STATE_ON); device_screen_on(); |