From: Aurelien Jarno <aurelien@xxxxxxxxxxx>
The patch below (against 2.6.23-rc1-mm1) adds a new function to get the
processor clock. It originally comes from the OpenWrt patches.
Cc: Felix Fietkau <nbd@xxxxxxxxxxx>
Signed-off-by: Aurelien Jarno <aurelien@xxxxxxxxxxx>
Signed-off-by: Michael Buesch <mb@xxxxxxxxx>
--- a/drivers/ssb/driver_chipcommon.c 2007-07-14 21:05:44.000000000 +0200
+++ b/drivers/ssb/driver_chipcommon.c 2007-07-14 21:22:04.000000000 +0200
@@ -264,6 +264,30 @@
ssb_chipco_set_clockmode(cc, SSB_CLKMODE_FAST);
}
+/* Get the processor clock */
+void ssb_chipco_get_clockcpu(struct ssb_chipcommon *cc,
+ u32 *plltype, u32 *n, u32 *m)
+{
+ *n = chipco_read32(cc, SSB_CHIPCO_CLOCK_N);
+ *plltype = (cc->capabilities & SSB_CHIPCO_CAP_PLLT);
+ switch (*plltype) {
+ case SSB_PLLTYPE_2:
+ case SSB_PLLTYPE_4:
+ case SSB_PLLTYPE_6:
+ case SSB_PLLTYPE_7:
+ *m = chipco_read32(cc, SSB_CHIPCO_CLOCK_MIPS);
+ break;
+ case SSB_PLLTYPE_3:
+ /* 5350 uses m2 to control mips */
+ *m = chipco_read32(cc, SSB_CHIPCO_CLOCK_M2);
+ break;
+ default:
+ *m = chipco_read32(cc, SSB_CHIPCO_CLOCK_SB);
+ break;
+ }
+}
+
+/* Get the bus clock */
void ssb_chipco_get_clockcontrol(struct ssb_chipcommon *cc,
u32 *plltype, u32 *n, u32 *m)
{
--- a/include/linux/ssb/ssb_driver_chipcommon.h 2007-07-14 21:05:44.000000000 +0200
+++ b/include/linux/ssb/ssb_driver_chipcommon.h 2007-07-14 21:17:28.000000000 +0200
@@ -364,6 +364,8 @@
extern void ssb_chipco_suspend(struct ssb_chipcommon *cc, pm_message_t state);
extern void ssb_chipco_resume(struct ssb_chipcommon *cc);
+extern void ssb_chipco_get_clockcpu(struct ssb_chipcommon *cc,
+ u32 *plltype, u32 *n, u32 *m);
extern void ssb_chipco_get_clockcontrol(struct ssb_chipcommon *cc,
u32 *plltype, u32 *n, u32 *m);
extern void ssb_chipco_timing_init(struct ssb_chipcommon *cc,
--
Greetings Michael.
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