diff options
| author | Finn Thain <fthain@telegraphics.com.au> | 2018-03-11 23:38:28 -0400 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2018-03-26 14:10:22 +0200 |
| commit | 6df2afba7a87afa71d4baf9875ec846d3040f9bb (patch) | |
| tree | c1bbc6bc28e0094fe0a1af8ec32018ba2fdec657 /arch/m68k/mac/misc.c | |
| parent | 31b1c780177d02d470109bdcf9899a3433c9fa93 (diff) | |
| download | linux-6df2afba7a87afa71d4baf9875ec846d3040f9bb.tar.bz2 | |
m68k/mac: Enable RTC for 100-series PowerBooks
According to Apple's Developer Notes, all of the early PowerBook models
have their RTC connected to VIA1. Use the VIA clock ops as appropriate.
This was tested on a PowerBook 170.
Don't use the VIA ops when not appropriate. Calling unimplemented clock
or PRAM getter or setter ops can now result in an error instead of
failing silently.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k/mac/misc.c')
| -rw-r--r-- | arch/m68k/mac/misc.c | 70 |
1 files changed, 41 insertions, 29 deletions
diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c index 50387638557d..d6746cf37101 100644 --- a/arch/m68k/mac/misc.c +++ b/arch/m68k/mac/misc.c @@ -83,12 +83,7 @@ static void cuda_write_pram(int offset, __u8 data) while (!req.complete) cuda_poll(); } -#else -#define cuda_read_time() 0 -#define cuda_write_time(n) -#define cuda_read_pram NULL -#define cuda_write_pram NULL -#endif +#endif /* CONFIG_ADB_CUDA */ #ifdef CONFIG_ADB_PMU68K static long pmu_read_time(void) @@ -141,12 +136,7 @@ static void pmu_write_pram(int offset, __u8 data) while (!req.complete) pmu_poll(); } -#else -#define pmu_read_time() 0 -#define pmu_write_time(n) -#define pmu_read_pram NULL -#define pmu_write_pram NULL -#endif +#endif /* CONFIG_ADB_PMU68K */ /* * VIA PRAM/RTC access routines @@ -426,19 +416,25 @@ void mac_pram_read(int offset, __u8 *buffer, int len) int i; switch (macintosh_config->adb_type) { + case MAC_ADB_IOP: + case MAC_ADB_II: case MAC_ADB_PB1: - case MAC_ADB_PB2: - func = pmu_read_pram; + func = via_read_pram; break; +#ifdef CONFIG_ADB_CUDA case MAC_ADB_EGRET: case MAC_ADB_CUDA: func = cuda_read_pram; break; +#endif +#ifdef CONFIG_ADB_PMU68K + case MAC_ADB_PB2: + func = pmu_read_pram; + break; +#endif default: - func = via_read_pram; - } - if (!func) return; + } for (i = 0 ; i < len ; i++) { buffer[i] = (*func)(offset++); } @@ -450,19 +446,25 @@ void mac_pram_write(int offset, __u8 *buffer, int len) int i; switch (macintosh_config->adb_type) { + case MAC_ADB_IOP: + case MAC_ADB_II: case MAC_ADB_PB1: - case MAC_ADB_PB2: - func = pmu_write_pram; + func = via_write_pram; break; +#ifdef CONFIG_ADB_CUDA case MAC_ADB_EGRET: case MAC_ADB_CUDA: func = cuda_write_pram; break; +#endif +#ifdef CONFIG_ADB_PMU68K + case MAC_ADB_PB2: + func = pmu_write_pram; + break; +#endif default: - func = via_write_pram; - } - if (!func) return; + } for (i = 0 ; i < len ; i++) { (*func)(offset++, buffer[i]); } @@ -663,18 +665,22 @@ int mac_hwclk(int op, struct rtc_time *t) if (!op) { /* read */ switch (macintosh_config->adb_type) { - case MAC_ADB_II: case MAC_ADB_IOP: - now = via_read_time(); - break; + case MAC_ADB_II: case MAC_ADB_PB1: - case MAC_ADB_PB2: - now = pmu_read_time(); + now = via_read_time(); break; +#ifdef CONFIG_ADB_CUDA case MAC_ADB_EGRET: case MAC_ADB_CUDA: now = cuda_read_time(); break; +#endif +#ifdef CONFIG_ADB_PMU68K + case MAC_ADB_PB2: + now = pmu_read_time(); + break; +#endif default: now = 0; } @@ -695,18 +701,24 @@ int mac_hwclk(int op, struct rtc_time *t) t->tm_hour, t->tm_min, t->tm_sec); switch (macintosh_config->adb_type) { - case MAC_ADB_II: case MAC_ADB_IOP: + case MAC_ADB_II: + case MAC_ADB_PB1: via_write_time(now); break; +#ifdef CONFIG_ADB_CUDA case MAC_ADB_EGRET: case MAC_ADB_CUDA: cuda_write_time(now); break; - case MAC_ADB_PB1: +#endif +#ifdef CONFIG_ADB_PMU68K case MAC_ADB_PB2: pmu_write_time(now); break; +#endif + default: + return -ENODEV; } } return 0; |