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>

7 files changed, 33 insertions, 10 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;
diff --git a/arch/sh/kernel/cpu/sh3/clock-sh7709.c b/arch/sh/kernel/cpu/sh3/clock-sh7709.c
index 10461a745e5f..b791a29fdb62 100644
--- a/arch/sh/kernel/cpu/sh3/clock-sh7709.c
+++ b/arch/sh/kernel/cpu/sh3/clock-sh7709.c
@@ -24,7 +24,7 @@ static int pfc_divisors[]    = { 1, 2, 4, 1, 3, 6, 1, 1 };
 
 static void set_bus_parent(struct clk *clk)
 {
-        struct clk *bus_clk = clk_get("bus_clk");
+        struct clk *bus_clk = clk_get(NULL, "bus_clk");
         clk->parent = bus_clk;
         clk_put(bus_clk);
 }
diff --git a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
index bfdf5fe8d948..fa2019aabd74 100644
--- a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
+++ b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
@@ -97,7 +97,7 @@ static void shoc_clk_recalc(struct clk *clk)
 
 static int shoc_clk_verify_rate(struct clk *clk, unsigned long rate)
 {
-        struct clk *bclk = clk_get("bus_clk");
+        struct clk *bclk = clk_get(NULL, "bus_clk");
         unsigned long bclk_rate = clk_get_rate(bclk);
 
         clk_put(bclk);
@@ -151,7 +151,7 @@ static struct clk *sh4202_onchip_clocks[] = {
 
 static int __init sh4202_clk_init(void)
 {
-        struct clk *clk = clk_get("master_clk");
+        struct clk *clk = clk_get(NULL, "master_clk");
         int i;
 
         for (i = 0; i < ARRAY_SIZE(sh4202_onchip_clocks); i++) {
diff --git a/arch/sh/kernel/cpu/sh4/clock-sh7780.c b/arch/sh/kernel/cpu/sh4/clock-sh7780.c
index 93ad367342c9..9e6a216750c8 100644
--- a/arch/sh/kernel/cpu/sh4/clock-sh7780.c
+++ b/arch/sh/kernel/cpu/sh4/clock-sh7780.c
@@ -98,7 +98,7 @@ static struct clk *sh7780_onchip_clocks[] = {
 
 static int __init sh7780_clk_init(void)
 {
-        struct clk *clk = clk_get("master_clk");
+        struct clk *clk = clk_get(NULL, "master_clk");
         int i;
 
         for (i = 0; i < ARRAY_SIZE(sh7780_onchip_clocks); i++) {
diff --git a/arch/sh/kernel/timers/timer-cmt.c b/arch/sh/kernel/timers/timer-cmt.c
index 95581dccbbfd..a574b93a4e7b 100644
--- a/arch/sh/kernel/timers/timer-cmt.c
+++ b/arch/sh/kernel/timers/timer-cmt.c
@@ -124,7 +124,7 @@ static void cmt_clk_init(struct clk *clk)
         u8 divisor = CMT_CMCSR_INIT & 0x3;
         ctrl_inw(CMT_CMCSR_0);
         ctrl_outw(CMT_CMCSR_INIT, CMT_CMCSR_0);
-        clk->parent = clk_get("module_clk");
+        clk->parent = clk_get(NULL, "module_clk");
         clk->rate = clk->parent->rate / (8 << (divisor << 1));
 }
 
@@ -164,7 +164,7 @@ static int cmt_timer_init(void)
 
         setup_irq(CONFIG_SH_TIMER_IRQ, &cmt_irq);
 
-        cmt0_clk.parent = clk_get("module_clk");
+        cmt0_clk.parent = clk_get(NULL, "module_clk");
 
         cmt_timer_stop();
 
diff --git a/arch/sh/kernel/timers/timer-mtu2.c b/arch/sh/kernel/timers/timer-mtu2.c
index 201f0a62132f..fffcd1c09873 100644
--- a/arch/sh/kernel/timers/timer-mtu2.c
+++ b/arch/sh/kernel/timers/timer-mtu2.c
@@ -161,7 +161,7 @@ static int mtu2_timer_init(void)
 
         setup_irq(CONFIG_SH_TIMER_IRQ, &mtu2_irq);
 
-        mtu2_clk1.parent = clk_get("module_clk");
+        mtu2_clk1.parent = clk_get(NULL, "module_clk");
 
         ctrl_outb(ctrl_inb(STBCR3) & (~0x20), STBCR3);
 
diff --git a/arch/sh/kernel/timers/timer-tmu.c b/arch/sh/kernel/timers/timer-tmu.c
index b9ed8a387555..e060e71d0785 100644
--- a/arch/sh/kernel/timers/timer-tmu.c
+++ b/arch/sh/kernel/timers/timer-tmu.c
@@ -144,7 +144,7 @@ static int tmu_timer_init(void)
 
         setup_irq(CONFIG_SH_TIMER_IRQ, &tmu_irq);
 
-        tmu0_clk.parent = clk_get("module_clk");
+        tmu0_clk.parent = clk_get(NULL, "module_clk");
 
         /* Start TMU0 */
         tmu_timer_stop();