Commit 84965337 authored by Paul Mundt's avatar Paul Mundt

Merge branch 'common/clkfwk' into sh-fixes-for-linus

parents 6800e4c0 549015c3
......@@ -79,10 +79,6 @@
</sect2>
</sect1>
</chapter>
<chapter id="clk">
<title>Clock Framework Extensions</title>
!Iinclude/linux/sh_clk.h
</chapter>
<chapter id="mach">
<title>Machine Specific Interfaces</title>
<sect1 id="dreamcast">
......
Clock framework on SuperH architecture
The framework on SH extends existing API by the function clk_set_rate_ex,
which prototype is as follows:
clk_set_rate_ex (struct clk *clk, unsigned long rate, int algo_id)
The algo_id parameter is used to specify algorithm used to recalculate clocks,
adjanced to clock, specified as first argument. It is assumed that algo_id==0
means no changes to adjanced clock
Internally, the clk_set_rate_ex forwards request to clk->ops->set_rate method,
if it is present in ops structure. The method should set the clock rate and adjust
all needed clocks according to the passed algo_id.
Exact values for algo_id are machine-dependent. For the sh7722, the following
values are defined:
NO_CHANGE = 0,
IUS_N1_N1, /* I:U = N:1, U:Sh = N:1 */
IUS_322, /* I:U:Sh = 3:2:2 */
IUS_522, /* I:U:Sh = 5:2:2 */
IUS_N11, /* I:U:Sh = N:1:1 */
SB_N1, /* Sh:B = N:1 */
SB3_N1, /* Sh:B3 = N:1 */
SB3_32, /* Sh:B3 = 3:2 */
SB3_43, /* Sh:B3 = 4:3 */
SB3_54, /* Sh:B3 = 5:4 */
BP_N1, /* B:P = N:1 */
IP_N1 /* I:P = N:1 */
Each of these constants means relation between clocks that can be set via the FRQCR
register
......@@ -220,8 +220,7 @@ static void pllc2_disable(struct clk *clk)
__raw_writel(__raw_readl(PLLC2CR) & ~0x80000000, PLLC2CR);
}
static int pllc2_set_rate(struct clk *clk,
unsigned long rate, int algo_id)
static int pllc2_set_rate(struct clk *clk, unsigned long rate)
{
unsigned long value;
int idx;
......@@ -463,8 +462,7 @@ static int fsidiv_enable(struct clk *clk)
return 0;
}
static int fsidiv_set_rate(struct clk *clk,
unsigned long rate, int algo_id)
static int fsidiv_set_rate(struct clk *clk, unsigned long rate)
{
int idx;
......
......@@ -110,7 +110,7 @@ static int shoc_clk_verify_rate(struct clk *clk, unsigned long rate)
return 0;
}
static int shoc_clk_set_rate(struct clk *clk, unsigned long rate, int algo_id)
static int shoc_clk_set_rate(struct clk *clk, unsigned long rate)
{
unsigned long frqcr3;
unsigned int tmp;
......
......@@ -454,12 +454,6 @@ unsigned long clk_get_rate(struct clk *clk)
EXPORT_SYMBOL_GPL(clk_get_rate);
int clk_set_rate(struct clk *clk, unsigned long rate)
{
return clk_set_rate_ex(clk, rate, 0);
}
EXPORT_SYMBOL_GPL(clk_set_rate);
int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id)
{
int ret = -EOPNOTSUPP;
unsigned long flags;
......@@ -467,7 +461,7 @@ int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id)
spin_lock_irqsave(&clock_lock, flags);
if (likely(clk->ops && clk->ops->set_rate)) {
ret = clk->ops->set_rate(clk, rate, algo_id);
ret = clk->ops->set_rate(clk, rate);
if (ret != 0)
goto out_unlock;
} else {
......@@ -485,7 +479,7 @@ int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id)
return ret;
}
EXPORT_SYMBOL_GPL(clk_set_rate_ex);
EXPORT_SYMBOL_GPL(clk_set_rate);
int clk_set_parent(struct clk *clk, struct clk *parent)
{
......@@ -653,8 +647,7 @@ static int clks_sysdev_suspend(struct sys_device *dev, pm_message_t state)
clkp->ops->set_parent(clkp,
clkp->parent);
if (likely(clkp->ops->set_rate))
clkp->ops->set_rate(clkp,
rate, NO_CHANGE);
clkp->ops->set_rate(clkp, rate);
else if (likely(clkp->ops->recalc))
clkp->rate = clkp->ops->recalc(clkp);
}
......
......@@ -110,8 +110,7 @@ static int sh_clk_div6_set_parent(struct clk *clk, struct clk *parent)
return 0;
}
static int sh_clk_div6_set_rate(struct clk *clk,
unsigned long rate, int algo_id)
static int sh_clk_div6_set_rate(struct clk *clk, unsigned long rate)
{
unsigned long value;
int idx;
......@@ -253,7 +252,7 @@ static int sh_clk_div4_set_parent(struct clk *clk, struct clk *parent)
return 0;
}
static int sh_clk_div4_set_rate(struct clk *clk, unsigned long rate, int algo_id)
static int sh_clk_div4_set_rate(struct clk *clk, unsigned long rate)
{
struct clk_div4_table *d4t = clk->priv;
unsigned long value;
......
......@@ -19,11 +19,13 @@ struct clk_mapping {
};
struct clk_ops {
#ifdef CONFIG_SH_CLK_CPG_LEGACY
void (*init)(struct clk *clk);
#endif
int (*enable)(struct clk *clk);
void (*disable)(struct clk *clk);
unsigned long (*recalc)(struct clk *clk);
int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id);
int (*set_rate)(struct clk *clk, unsigned long rate);
int (*set_parent)(struct clk *clk, struct clk *parent);
long (*round_rate)(struct clk *clk, unsigned long rate);
};
......@@ -67,36 +69,6 @@ int clk_register(struct clk *);
void clk_unregister(struct clk *);
void clk_enable_init_clocks(void);
/**
* clk_set_rate_ex - set the clock rate for a clock source, with additional parameter
* @clk: clock source
* @rate: desired clock rate in Hz
* @algo_id: algorithm id to be passed down to ops->set_rate
*
* Returns success (0) or negative errno.
*/
int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id);
enum clk_sh_algo_id {
NO_CHANGE = 0,
IUS_N1_N1,
IUS_322,
IUS_522,
IUS_N11,
SB_N1,
SB3_N1,
SB3_32,
SB3_43,
SB3_54,
BP_N1,
IP_N1,
};
struct clk_div_mult_table {
unsigned int *divisors;
unsigned int nr_divisors;
......
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