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* [PATCH] ssb-chipcommon: Add function to get processor clock
@ 2007-07-31 22:11 Michael Buesch
  2007-08-01 22:06 ` Andrew Morton
  0 siblings, 1 reply; 6+ messages in thread
From: Michael Buesch @ 2007-07-31 22:11 UTC (permalink / raw)
  To: Andrew Morton, John Linville
  Cc: linux-wireless, Aurelien Jarno, Felix Fietkau

From: Aurelien Jarno <aurelien@aurel32.net>

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@openwrt.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Michael Buesch <mb@bu3sch.de>

--- 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.

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2007-08-02 10:24 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2007-07-31 22:11 [PATCH] ssb-chipcommon: Add function to get processor clock Michael Buesch
2007-08-01 22:06 ` Andrew Morton
2007-08-01 22:09   ` Michael Buesch
2007-08-02  9:12     ` Aurelien Jarno
2007-08-02  9:40       ` Michael Buesch
2007-08-02 10:24         ` Aurelien Jarno

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