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>
diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index f5443a6..0ea43c0 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -602,7 +602,7 @@
/* From databook:
* divisor = ((((cpuclock / sbus_divisor) / 2) / mmcclock) / 2) - 1
*/
- pbus /= ((au_readl(SYS_POWERCTRL) & 0x3) + 2);
+ pbus /= ((alchemy_rdsys(AU1000_SYS_POWERCTRL) & 0x3) + 2);
pbus /= 2;
divisor = ((pbus / rate) / 2) - 1;