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>
diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c
index 51ec64c..abb586b1 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 @@
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 10461a7..b791a29 100644
--- a/arch/sh/kernel/cpu/sh3/clock-sh7709.c
+++ b/arch/sh/kernel/cpu/sh3/clock-sh7709.c
@@ -24,7 +24,7 @@
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 bfdf5fe..fa2019a 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 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 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 93ad367..9e6a216 100644
--- a/arch/sh/kernel/cpu/sh4/clock-sh7780.c
+++ b/arch/sh/kernel/cpu/sh4/clock-sh7780.c
@@ -98,7 +98,7 @@
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 95581dc..a574b93 100644
--- a/arch/sh/kernel/timers/timer-cmt.c
+++ b/arch/sh/kernel/timers/timer-cmt.c
@@ -124,7 +124,7 @@
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 @@
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 201f0a6..fffcd1c 100644
--- a/arch/sh/kernel/timers/timer-mtu2.c
+++ b/arch/sh/kernel/timers/timer-mtu2.c
@@ -161,7 +161,7 @@
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 b9ed8a3..e060e71 100644
--- a/arch/sh/kernel/timers/timer-tmu.c
+++ b/arch/sh/kernel/timers/timer-tmu.c
@@ -144,7 +144,7 @@
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();
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index cfcc3ca..3b5f19e 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -775,7 +775,7 @@
*
* Clean this up later..
*/
- clk = clk_get("module_clk");
+ clk = clk_get(NULL, "module_clk");
port->uartclk = clk_get_rate(clk) * 16;
clk_put(clk);
}
@@ -960,7 +960,7 @@
default:
{
#if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64)
- struct clk *clk = clk_get("module_clk");
+ struct clk *clk = clk_get(NULL, "module_clk");
t = SCBRR_VALUE(baud, clk_get_rate(clk));
clk_put(clk);
#else
@@ -1128,7 +1128,7 @@
* XXX: We should use a proper SCI/SCIF clock
*/
{
- struct clk *clk = clk_get("module_clk");
+ struct clk *clk = clk_get(NULL, "module_clk");
sci_ports[i].port.uartclk = clk_get_rate(clk) * 16;
clk_put(clk);
}
diff --git a/include/asm-sh/clock.h b/include/asm-sh/clock.h
index fdfb75b..1df9280 100644
--- a/include/asm-sh/clock.h
+++ b/include/asm-sh/clock.h
@@ -4,6 +4,7 @@
#include <linux/kref.h>
#include <linux/list.h>
#include <linux/seq_file.h>
+#include <linux/clk.h>
struct clk;
@@ -18,7 +19,7 @@
struct clk {
struct list_head node;
const char *name;
-
+ int id;
struct module *owner;
struct clk *parent;
@@ -40,22 +41,13 @@
int clk_init(void);
int __clk_enable(struct clk *);
-int clk_enable(struct clk *);
-
void __clk_disable(struct clk *);
-void clk_disable(struct clk *);
-int clk_set_rate(struct clk *, unsigned long rate);
-unsigned long clk_get_rate(struct clk *);
void clk_recalc_rate(struct clk *);
-struct clk *clk_get(const char *id);
-void clk_put(struct clk *);
-
int clk_register(struct clk *);
void clk_unregister(struct clk *);
int show_clocks(struct seq_file *m);
#endif /* __ASM_SH_CLOCK_H */
-