OMAP2xxx clock: move sys_clk code into mach-omap2/clkt2xxx_sys.c

Move the sys_clk clock functions from clock2xxx.c to
mach-omap2/clkt2xxx_sys.c.  This is intended to make the clock code
easier to understand, since all of the functions needed to manage the
sys_clk are now located in their own file, rather than being mixed
with other, unrelated functions.

Clock debugging is also now more finely-grained, since the DEBUG
macro can now be defined for the sys_clk clock alone.  This
should reduce unnecessary console noise when debugging.

Also, if at some future point the mach-omap2/ directory is split into
OMAP2/3/4 variants, this clkt file can be placed in the mach-omap2xxx/
directory, rather than shared with other chip types that don't use
this clock type.

Thanks to Alexander Shishkin <virtuoso@slind.org> for his comments to
improve the patch description.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Alexander Shishkin <virtuoso@slind.org>

1 files changed, 0 insertions, 30 deletions

diff --git a/arch/arm/mach-omap2/clock2xxx.c b/arch/arm/mach-omap2/clock2xxx.c
index 62c3b022a1e..b59cb1d2bf5 100644
--- a/arch/arm/mach-omap2/clock2xxx.c
+++ b/arch/arm/mach-omap2/clock2xxx.c
@@ -46,8 +46,6 @@
 
 struct clk *vclk, *sclk, *dclk;
 
-void __iomem *prcm_clksrc_ctrl;
-
 /*-------------------------------------------------------------------------
  * Omap24xx specific clock functions
  *-------------------------------------------------------------------------*/
@@ -79,34 +77,6 @@ const struct clkops clkops_omap2430_i2chs_wait = {
 	.find_companion = omap2_clk_dflt_find_companion,
 };
 
-#ifdef OLD_CK
-/* Recalculate SYST_CLK */
-static void omap2_sys_clk_recalc(struct clk *clk)
-{
-	u32 div = PRCM_CLKSRC_CTRL;
-	div &= (1 << 7) | (1 << 6);	/* Test if ext clk divided by 1 or 2 */
-	div >>= clk->rate_offset;
-	clk->rate = (clk->parent->rate / div);
-	propagate_rate(clk);
-}
-#endif	/* OLD_CK */
-
-u32 omap2xxx_get_sysclkdiv(void)
-{
-	u32 div;
-
-	div = __raw_readl(prcm_clksrc_ctrl);
-	div &= OMAP_SYSCLKDIV_MASK;
-	div >>= OMAP_SYSCLKDIV_SHIFT;
-
-	return div;
-}
-
-unsigned long omap2_sys_clk_recalc(struct clk *clk)
-{
-	return clk->parent->rate / omap2xxx_get_sysclkdiv();
-}
-
 /*
  * Set clocks for bypass mode for reboot to work.
  */