From 2f0183222b4279266e6ef60b923738ff55f0afba Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 13 Feb 2014 13:31:31 +0100 Subject: xfree86: Fallback to first platform device as primary When neither of the various bus implementations was able to find a primary bus and device, fallback to using the platform bus as primary bus and the first platform device as primary device. Signed-off-by: Thierry Reding Reviewed-by: Rob Clark Tested-by: Rob Clark Signed-off-by: Keith Packard --- hw/xfree86/common/xf86Bus.c | 3 +++ hw/xfree86/common/xf86platformBus.c | 15 +++++++++++++++ hw/xfree86/common/xf86platformBus.h | 1 + 3 files changed, 19 insertions(+) diff --git a/hw/xfree86/common/xf86Bus.c b/hw/xfree86/common/xf86Bus.c index b3b3f8cc5..bd3e4e37b 100644 --- a/hw/xfree86/common/xf86Bus.c +++ b/hw/xfree86/common/xf86Bus.c @@ -210,6 +210,9 @@ xf86BusProbe(void) #if (defined(__sparc__) || defined(__sparc)) && !defined(__OpenBSD__) xf86SbusProbe(); #endif +#ifdef XSERVER_PLATFORM_BUS + xf86platformPrimary(); +#endif } /* diff --git a/hw/xfree86/common/xf86platformBus.c b/hw/xfree86/common/xf86platformBus.c index 946039940..1bacc49e6 100644 --- a/hw/xfree86/common/xf86platformBus.c +++ b/hw/xfree86/common/xf86platformBus.c @@ -594,4 +594,19 @@ void xf86platformVTProbe(void) xf86PlatformReprobeDevice(i, xf86_platform_devices[i].attribs); } } + +void xf86platformPrimary(void) +{ + /* use the first platform device as a fallback */ + if (primaryBus.type == BUS_NONE) { + xf86Msg(X_INFO, "no primary bus or device found\n"); + + if (xf86_num_platform_devices > 0) { + primaryBus.id.plat = &xf86_platform_devices[0]; + primaryBus.type = BUS_PLATFORM; + + xf86Msg(X_NONE, "\tfalling back to %s\n", primaryBus.id.plat->attribs->syspath); + } + } +} #endif diff --git a/hw/xfree86/common/xf86platformBus.h b/hw/xfree86/common/xf86platformBus.h index 317dd24d5..a7335b9da 100644 --- a/hw/xfree86/common/xf86platformBus.h +++ b/hw/xfree86/common/xf86platformBus.h @@ -155,6 +155,7 @@ extern _X_EXPORT int xf86PlatformMatchDriver(char *matches[], int nmatches); extern void xf86platformVTProbe(void); +extern void xf86platformPrimary(void); #endif #endif -- cgit v1.2.3