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[ARM] 3622/1: pnx4008: remove clk_use/clk_unuse 

Patch from Vitaly Wool

clk_use/clk_unuse functions are no longer needed, so removing those from arch/arm/mach-pnx4008/clock.c.
Also, the order of functions is rearranged a bit, to avoid forward declarations.

Signed-off-by: Vitaly Wool <vwool@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Vitaly Wool 2006-06-22 10:26:20 +01:00 committed by Russell King
parent 1a6be26d5b
commit e9931b5da6
1 changed files with 51 additions and 78 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

129
arch/arm/mach-pnx4008/clock.c
View File

@ -767,6 +767,54 @@ static struct clk *onchip_clks[] = {
&uart6_ck,
};
static int local_clk_enable(struct clk *clk)
{
int ret = 0;
if (!(clk->flags & FIXED_RATE) && !clk->rate && clk->set_rate
&& clk->user_rate)
ret = clk->set_rate(clk, clk->user_rate);
return ret;
}
static void local_clk_disable(struct clk *clk)
{
if (!(clk->flags & FIXED_RATE) && clk->rate && clk->set_rate)
clk->set_rate(clk, 0);
}
static void local_clk_unuse(struct clk *clk)
{
if (clk->usecount > 0 && !(--clk->usecount)) {
local_clk_disable(clk);
if (clk->parent)
local_clk_unuse(clk->parent);
}
}
static int local_clk_use(struct clk *clk)
{
int ret = 0;
if (clk->usecount++ == 0) {
if (clk->parent)
ret = local_clk_use(clk->parent);
if (ret != 0) {
clk->usecount--;
goto out;
}
ret = local_clk_enable(clk);
if (ret != 0 && clk->parent) {
local_clk_unuse(clk->parent);
clk->usecount--;
}
}
out:
return ret;
}
static int local_set_rate(struct clk *clk, u32 rate)
{
int ret = -EINVAL;
@ -847,28 +895,12 @@ unsigned long clk_get_rate(struct clk *clk)
}
EXPORT_SYMBOL(clk_get_rate);
static int local_clk_enable(struct clk *clk)
{
int ret = 0;
if (!(clk->flags & FIXED_RATE) && !clk->rate && clk->set_rate
&& clk->user_rate)
ret = clk->set_rate(clk, clk->user_rate);
return ret;
}
static void local_clk_disable(struct clk *clk)
{
if (!(clk->flags & FIXED_RATE) && clk->rate && clk->set_rate)
clk->set_rate(clk, 0);
}
int clk_enable(struct clk *clk)
{
int ret = 0;
clock_lock();
ret = local_clk_enable(clk);
ret = local_clk_use(clk);
clock_unlock();
return ret;
}
@ -877,71 +909,12 @@ EXPORT_SYMBOL(clk_enable);
void clk_disable(struct clk *clk)
{
clock_lock();
local_clk_disable(clk);
clock_unlock();
}
EXPORT_SYMBOL(clk_disable);
static void local_clk_unuse(struct clk *clk)
{
if (clk->usecount > 0 && !(--clk->usecount)) {
local_clk_disable(clk);
if (clk->parent)
local_clk_unuse(clk->parent);
}
}
static int local_clk_use(struct clk *clk)
{
int ret = 0;
if (clk->usecount++ == 0) {
if (clk->parent)
ret = local_clk_use(clk->parent);
if (ret != 0) {
clk->usecount--;
goto out;
}
ret = local_clk_enable(clk);
if (ret != 0 && clk->parent) {
local_clk_unuse(clk->parent);
clk->usecount--;
}
}
out:
return ret;
}
/* The main purpose of clk_use ans clk_unuse functions
* is to control switching 13MHz oscillator and PLL1 (13'MHz),
* so that they are disabled whenever none of PLL2-5 is using them.
* Although in theory these functions should work with any clock,
* please use them only on PLL2 - PLL5 to avoid confusion.
*/
int clk_use(struct clk *clk)
{
int ret = 0;
clock_lock();
ret = local_clk_use(clk);
clock_unlock();
return ret;
}
EXPORT_SYMBOL(clk_use);
void clk_unuse(struct clk *clk)
{
clock_lock();
local_clk_unuse(clk);
clock_unlock();
}
EXPORT_SYMBOL(clk_unuse);
EXPORT_SYMBOL(clk_disable);
long clk_round_rate(struct clk *clk, unsigned long rate)
{
@ -995,7 +968,7 @@ static int __init clk_init(void)
__FUNCTION__, (*clkp)->name, (*clkp)->rate);
}
clk_use(&ck_pll4);
local_clk_use(&ck_pll4);
/* if ck_13MHz is not used, disable it. */
if (ck_13MHz.usecount == 0)