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Diffstat (limited to 'arch/arm/mach-s3c2443/clock.c')
-rw-r--r--arch/arm/mach-s3c2443/clock.c105
1 files changed, 6 insertions, 99 deletions
diff --git a/arch/arm/mach-s3c2443/clock.c b/arch/arm/mach-s3c2443/clock.c
index cd51d04e1de7..1c2c088aa2e8 100644
--- a/arch/arm/mach-s3c2443/clock.c
+++ b/arch/arm/mach-s3c2443/clock.c
@@ -61,10 +61,10 @@
*
* this clock is sourced from msysclk and can have a number of
* divider values applied to it to then be fed into armclk.
+ * The real clock definition is done in s3c2443-clock.c,
+ * only the armdiv divisor table must be defined here.
*/
-/* armdiv divisor table */
-
static unsigned int armdiv[16] = {
[S3C2443_CLKDIV0_ARMDIV_1 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 1,
[S3C2443_CLKDIV0_ARMDIV_2 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 2,
@@ -76,92 +76,6 @@ static unsigned int armdiv[16] = {
[S3C2443_CLKDIV0_ARMDIV_16 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 16,
};
-static inline unsigned int s3c2443_fclk_div(unsigned long clkcon0)
-{
- clkcon0 &= S3C2443_CLKDIV0_ARMDIV_MASK;
-
- return armdiv[clkcon0 >> S3C2443_CLKDIV0_ARMDIV_SHIFT];
-}
-
-static unsigned long s3c2443_armclk_roundrate(struct clk *clk,
- unsigned long rate)
-{
- unsigned long parent = clk_get_rate(clk->parent);
- unsigned long calc;
- unsigned best = 256; /* bigger than any value */
- unsigned div;
- int ptr;
-
- for (ptr = 0; ptr < ARRAY_SIZE(armdiv); ptr++) {
- div = armdiv[ptr];
- calc = parent / div;
- if (calc <= rate && div < best)
- best = div;
- }
-
- return parent / best;
-}
-
-static int s3c2443_armclk_setrate(struct clk *clk, unsigned long rate)
-{
- unsigned long parent = clk_get_rate(clk->parent);
- unsigned long calc;
- unsigned div;
- unsigned best = 256; /* bigger than any value */
- int ptr;
- int val = -1;
-
- for (ptr = 0; ptr < ARRAY_SIZE(armdiv); ptr++) {
- div = armdiv[ptr];
- calc = parent / div;
- if (calc <= rate && div < best) {
- best = div;
- val = ptr;
- }
- }
-
- if (val >= 0) {
- unsigned long clkcon0;
-
- clkcon0 = __raw_readl(S3C2443_CLKDIV0);
- clkcon0 &= ~S3C2443_CLKDIV0_ARMDIV_MASK;
- clkcon0 |= val << S3C2443_CLKDIV0_ARMDIV_SHIFT;
- __raw_writel(clkcon0, S3C2443_CLKDIV0);
- }
-
- return (val == -1) ? -EINVAL : 0;
-}
-
-static struct clk clk_armdiv = {
- .name = "armdiv",
- .parent = &clk_msysclk.clk,
- .ops = &(struct clk_ops) {
- .round_rate = s3c2443_armclk_roundrate,
- .set_rate = s3c2443_armclk_setrate,
- },
-};
-
-/* armclk
- *
- * this is the clock fed into the ARM core itself, from armdiv or from hclk.
- */
-
-static struct clk *clk_arm_sources[] = {
- [0] = &clk_armdiv,
- [1] = &clk_h,
-};
-
-static struct clksrc_clk clk_arm = {
- .clk = {
- .name = "armclk",
- },
- .sources = &(struct clksrc_sources) {
- .sources = clk_arm_sources,
- .nr_sources = ARRAY_SIZE(clk_arm_sources),
- },
- .reg_src = { .reg = S3C2443_CLKDIV0, .size = 1, .shift = 13 },
-};
-
/* hsspi
*
* high-speed spi clock, sourced from esysclk
@@ -254,25 +168,20 @@ static struct clk init_clocks_off[] = {
}
};
-static struct clk init_clocks[] = {
-};
-
/* clocks to add straight away */
static struct clksrc_clk *clksrcs[] __initdata = {
- &clk_arm,
&clk_hsspi,
&clk_hsmmc_div,
};
static struct clk *clks[] __initdata = {
&clk_hsmmc,
- &clk_armdiv,
};
void __init_or_cpufreq s3c2443_setup_clocks(void)
{
- s3c2443_common_setup_clocks(s3c2443_get_mpll, s3c2443_fclk_div);
+ s3c2443_common_setup_clocks(s3c2443_get_mpll);
}
void __init s3c2443_init_clocks(int xtal)
@@ -283,7 +192,9 @@ void __init s3c2443_init_clocks(int xtal)
clk_epll.rate = s3c2443_get_epll(epllcon, xtal);
clk_epll.parent = &clk_epllref.clk;
- s3c2443_common_init_clocks(xtal, s3c2443_get_mpll, s3c2443_fclk_div);
+ s3c2443_common_init_clocks(xtal, s3c2443_get_mpll,
+ armdiv, ARRAY_SIZE(armdiv),
+ S3C2443_CLKDIV0_ARMDIV_MASK);
s3c2443_setup_clocks();
@@ -292,10 +203,6 @@ void __init s3c2443_init_clocks(int xtal)
for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
s3c_register_clksrc(clksrcs[ptr], 1);
- /* register clocks from clock array */
-
- s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
-
/* We must be careful disabling the clocks we are not intending to
* be using at boot time, as subsystems such as the LCD which do
* their own DMA requests to the bus can cause the system to lockup