diff options
| author | Finn Thain <fthain@telegraphics.com.au> | 2018-12-22 13:18:01 +1100 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2019-01-21 10:36:53 +0100 |
| commit | 6a93207b7de55255209978fabeddc3cdf261e4db (patch) | |
| tree | 59d6421ab6e3b684c13d9c6930b709daf4e84931 /arch/m68k | |
| parent | 8f5ec4667db9e3ab63acf875273580ddc0fb46af (diff) | |
| download | lwn-6a93207b7de55255209978fabeddc3cdf261e4db.tar.gz lwn-6a93207b7de55255209978fabeddc3cdf261e4db.zip | |
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 <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k')
| -rw-r--r-- | arch/m68k/mac/via.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/arch/m68k/mac/via.c b/arch/m68k/mac/via.c index acdabbeecfd2..e6c8b71a3bcb 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... */ |