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| author |   Manuel Lauss <manuel.lauss@gmail.com> | 2014-07-23 16:36:24 +0200 |
|---|---|---|
| committer |   Ralf Baechle <ralf@linux-mips.org> | 2014-07-30 13:53:28 +0200 |
| commit | 1d09de7dc76ef96a9a2c7c0244e20f12d68e6ef8 (patch) | |
| tree | 929cb54b63224fc65d7b56d52b00a89bb236b9a0 /drivers/rtc/rtc-au1xxx.c | |
| parent | MIPS: Alchemy: au1000.h move C-code after register definitions. (diff) | |
| download | wireguard-linux-1d09de7dc76ef96a9a2c7c0244e20f12d68e6ef8.tar.xz wireguard-linux-1d09de7dc76ef96a9a2c7c0244e20f12d68e6ef8.zip | |
MIPS: Alchemy: introduce helpers to access SYS register block.
This patch changes all absolute SYS_XY registers to offsets from the
SYS block base, prefixes them with AU1000 to avoid silent failures due
to changed addresses, and introduces helper functions to read/write
them.
No functional changes, comparing assembly of a few select functions shows
no differences.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/7464/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers/rtc/rtc-au1xxx.c')
| -rw-r--r-- | drivers/rtc/rtc-au1xxx.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/rtc/rtc-au1xxx.c b/drivers/rtc/rtc-au1xxx.c index ed526a192ce0..fd25e2374d4e 100644 --- a/drivers/rtc/rtc-au1xxx.c +++ b/drivers/rtc/rtc-au1xxx.c @@ -32,7 +32,7 @@ static int au1xtoy_rtc_read_time(struct device *dev, struct rtc_time *tm) { unsigned long t; - t = au_readl(SYS_TOYREAD); + t = alchemy_rdsys(AU1000_SYS_TOYREAD); rtc_time_to_tm(t, tm); @@ -45,13 +45,12 @@ static int au1xtoy_rtc_set_time(struct device *dev, struct rtc_time *tm) rtc_tm_to_time(tm, &t); - au_writel(t, SYS_TOYWRITE); - au_sync(); + alchemy_wrsys(t, AU1000_SYS_TOYWRITE); /* wait for the pending register write to succeed. This can * take up to 6 seconds... */ - while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C0S) + while (alchemy_rdsys(AU1000_SYS_CNTRCTRL) & SYS_CNTRL_C0S) msleep(1); return 0; @@ -68,7 +67,7 @@ static int au1xtoy_rtc_probe(struct platform_device *pdev) unsigned long t; int ret; - t = au_readl(SYS_COUNTER_CNTRL); + t = alchemy_rdsys(AU1000_SYS_CNTRCTRL); if (!(t & CNTR_OK)) { dev_err(&pdev->dev, "counters not working; aborting.\n"); ret = -ENODEV; @@ -78,10 +77,10 @@ static int au1xtoy_rtc_probe(struct platform_device *pdev) ret = -ETIMEDOUT; /* set counter0 tickrate to 1Hz if necessary */ - if (au_readl(SYS_TOYTRIM) != 32767) { + if (alchemy_rdsys(AU1000_SYS_TOYTRIM) != 32767) { /* wait until hardware gives access to TRIM register */ t = 0x00100000; - while ((au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T0S) && --t) + while ((alchemy_rdsys(AU1000_SYS_CNTRCTRL) & SYS_CNTRL_T0S) && --t) msleep(1); if (!t) { @@ -93,12 +92,11 @@ static int au1xtoy_rtc_probe(struct platform_device *pdev) } /* set 1Hz TOY tick rate */ - au_writel(32767, SYS_TOYTRIM); - au_sync(); + alchemy_wrsys(32767, AU1000_SYS_TOYTRIM); } /* wait until the hardware allows writes to the counter reg */ - while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C0S) + while (alchemy_rdsys(AU1000_SYS_CNTRCTRL) & SYS_CNTRL_C0S) msleep(1); rtcdev = devm_rtc_device_register(&pdev->dev, "rtc-au1xxx", |