sh: Clock framework tidying.

This syncs up the SH clock framework with the linux/clk.h API,
for which there were only some minor changes required, namely
the clk_get() dev_id and subsequent callsites.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 25 insertions, 2 deletions

diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c
index 51ec64cdf348..abb586b12565 100644
--- a/arch/sh/kernel/cpu/clock.c
+++ b/arch/sh/kernel/cpu/clock.c
@@ -5,9 +5,11 @@
  *
  * This clock framework is derived from the OMAP version by:
  *
- *      Copyright (C) 2004 Nokia Corporation
+ *      Copyright (C) 2004 - 2005 Nokia Corporation
  *      Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
  *
+ *  Modified for omap shared clock framework by Tony Lindgren <tony@atomide.com>
+ *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
@@ -20,6 +22,7 @@
 #include <linux/kref.h>
 #include <linux/seq_file.h>
 #include <linux/err.h>
+#include <linux/platform_device.h>
 #include <asm/clock.h>
 #include <asm/timer.h>
 
@@ -195,17 +198,37 @@ void clk_recalc_rate(struct clk *clk)
                 propagate_rate(clk);
 }
 
-struct clk *clk_get(const char *id)
+/*
+ * Returns a clock. Note that we first try to use device id on the bus
+ * and clock name. If this fails, we try to use clock name only.
+ */
+struct clk *clk_get(struct device *dev, const char *id)
 {
         struct clk *p, *clk = ERR_PTR(-ENOENT);
+        int idno;
+
+        if (dev == NULL || dev->bus != &platform_bus_type)
+                idno = -1;
+        else
+                idno = to_platform_device(dev)->id;
 
         mutex_lock(&clock_list_sem);
         list_for_each_entry(p, &clock_list, node) {
+                if (p->id == idno &&
+                    strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
+                        clk = p;
+                        goto found;
+                }
+        }
+
+        list_for_each_entry(p, &clock_list, node) {
                 if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
                         clk = p;
                         break;
                 }
         }
+
+found:
         mutex_unlock(&clock_list_sem);
 
         return clk;