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macintosh: Use common code to access RTC

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Now that the 68k Mac port has adopted the via-pmu driver, the same RTC
code can be shared between m68k and powerpc. Replace duplicated code in
arch/powerpc and arch/m68k with common RTC accessors for Cuda and PMU.

Drop the problematic WARN_ON which was introduced in commit 22db552b50
("powerpc/powermac: Fix rtc read/write functions").

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Finn Thain
2018-09-11 20:18:44 -04:00
committed by Michael Ellerman
父節點 053c5a753e
當前提交 0792a2c8e0
共有 6 個文件被更改，包括 106 次插入 和 171 次删除
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75
arch/m68k/mac/misc.c
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@@ -37,35 +37,6 @@
static void (*rom_reset)(void);
#ifdef CONFIG_ADB_CUDA
static time64_t cuda_read_time(void)
{
struct adb_request req;
time64_t time;
if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
return 0;
while (!req.complete)
cuda_poll();
time = (u32)((req.reply[3] << 24) | (req.reply[4] << 16) |
(req.reply[5] << 8) | req.reply[6]);
return time - RTC_OFFSET;
}
static void cuda_write_time(time64_t time)
{
struct adb_request req;
u32 data = lower_32_bits(time + RTC_OFFSET);
if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
(data >> 24) & 0xFF, (data >> 16) & 0xFF,
(data >> 8) & 0xFF, data & 0xFF) < 0)
return;
while (!req.complete)
cuda_poll();
}
static __u8 cuda_read_pram(int offset)
{
struct adb_request req;
@@ -91,33 +62,6 @@ static void cuda_write_pram(int offset, __u8 data)
#endif /* CONFIG_ADB_CUDA */
#ifdef CONFIG_ADB_PMU
static time64_t pmu_read_time(void)
{
struct adb_request req;
time64_t time;
if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
return 0;
pmu_wait_complete(&req);
time = (u32)((req.reply[0] << 24) | (req.reply[1] << 16) |
(req.reply[2] << 8) | req.reply[3]);
return time - RTC_OFFSET;
}
static void pmu_write_time(time64_t time)
{
struct adb_request req;
u32 data = lower_32_bits(time + RTC_OFFSET);
if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
(data >> 24) & 0xFF, (data >> 16) & 0xFF,
(data >> 8) & 0xFF, data & 0xFF) < 0)
return;
pmu_wait_complete(&req);
}
static __u8 pmu_read_pram(int offset)
{
struct adb_request req;
@@ -295,13 +239,17 @@ static time64_t via_read_time(void)
* is basically any machine with Mac II-style ADB.
*/
static void via_write_time(time64_t time)
static void via_set_rtc_time(struct rtc_time *tm)
{
union {
__u8 cdata[4];
__u32 idata;
} data;
__u8 temp;
time64_t time;
time = mktime64(tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
/* Clear the write protect bit */
@@ -641,12 +589,12 @@ int mac_hwclk(int op, struct rtc_time *t)
#ifdef CONFIG_ADB_CUDA
case MAC_ADB_EGRET:
case MAC_ADB_CUDA:
now = cuda_read_time();
now = cuda_get_time();
break;
#endif
#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
now = pmu_read_time();
now = pmu_get_time();
break;
#endif
default:
@@ -665,24 +613,21 @@ int mac_hwclk(int op, struct rtc_time *t)
__func__, t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
t->tm_hour, t->tm_min, t->tm_sec);
now = mktime64(t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
t->tm_hour, t->tm_min, t->tm_sec);
switch (macintosh_config->adb_type) {
case MAC_ADB_IOP:
case MAC_ADB_II:
case MAC_ADB_PB1:
via_write_time(now);
via_set_rtc_time(t);
break;
#ifdef CONFIG_ADB_CUDA
case MAC_ADB_EGRET:
case MAC_ADB_CUDA:
cuda_write_time(now);
cuda_set_rtc_time(t);
break;
#endif
#ifdef CONFIG_ADB_PMU
case MAC_ADB_PB2:
pmu_write_time(now);
pmu_set_rtc_time(t);
break;
#endif
default: