From 6a93207b7de55255209978fabeddc3cdf261e4db Mon Sep 17 00:00:00 2001 From: Finn Thain Date: Sat, 22 Dec 2018 13:18:01 +1100 Subject: [PATCH] m68k/mac: Skip VIA port setup unless RTC is connected Those Mac models which don't connect their RTC to VIA1 port B probably have something else connected to those pins. Just leave them the way we found them. Make the port B setup conditional on via_type, to match the RTC accessors in arch/m68k/mac/misc.c. Signed-off-by: Finn Thain Signed-off-by: Geert Uytterhoeven --- arch/m68k/mac/via.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/arch/m68k/mac/via.c b/arch/m68k/mac/via.c index acdabbe..e6c8b71 100644 --- a/arch/m68k/mac/via.c +++ b/arch/m68k/mac/via.c @@ -197,13 +197,18 @@ void __init via_init(void) via1[vBufB] |= 0x40; } - /* - * Set the RTC bits to a known state: all lines to outputs and - * RTC disabled (yes that's 0 to enable and 1 to disable). - */ - - via1[vDirB] |= (VIA1B_vRTCEnb | VIA1B_vRTCClk | VIA1B_vRTCData); - via1[vBufB] |= (VIA1B_vRTCEnb | VIA1B_vRTCClk); + switch (macintosh_config->adb_type) { + case MAC_ADB_IOP: + case MAC_ADB_II: + case MAC_ADB_PB1: + /* + * Set the RTC bits to a known state: all lines to outputs and + * RTC disabled (yes that's 0 to enable and 1 to disable). + */ + via1[vDirB] |= VIA1B_vRTCEnb | VIA1B_vRTCClk | VIA1B_vRTCData; + via1[vBufB] |= VIA1B_vRTCEnb | VIA1B_vRTCClk; + break; + } /* Everything below this point is VIA2/RBV only... */ -- 2.7.4