OMAP2/3 clock: clean up omap*_clk_arch_init()

In the OMAP3xxx clock code, remove the #ifdef CONFIG_ARCH_OMAP3 in
clock34xx.c, since this file is only compiled for OMAP3xxx builds.  Also,
rename omap2_clk_arch_init in this file to omap3xxx_clk_arch_init() to
pave the way for multi-OMAP kernels.  Ensure that it is not executed
on non-OMAP3xxx systems.

In the OMAP2xxx clock code, rename omap2_clk_arch_init in this file to
omap2xxx_clk_arch_init() to pave the way for multi-OMAP kernels.
Ensure that it is not executed on non-OMAP2xxx systems.

Signed-off-by: Paul Walmsley <paul@pwsan.com>

arch/arm/mach-omap2/clock2xxx.c

@@ -101,11 +101,14 @@ void omap2_clk_prepare_for_reboot(void)
  * Switch the MPU rate if specified on cmdline.
  * We cannot do this early until cmdline is parsed.
  */
-static int __init omap2_clk_arch_init(void)
+static int __init omap2xxx_clk_arch_init(void)
 {
 	struct clk *virt_prcm_set, *sys_ck, *dpll_ck, *mpu_ck;
 	unsigned long sys_ck_rate;
 
+	if (!cpu_is_omap24xx())
+		return 0;
+
 	if (!mpurate)
 		return -EINVAL;
 
@@ -129,6 +132,6 @@ static int __init omap2_clk_arch_init(void)
 
 	return 0;
 }
-arch_initcall(omap2_clk_arch_init);
+arch_initcall(omap2xxx_clk_arch_init);
 
 

arch/arm/mach-omap2/clock34xx.c

@@ -162,12 +162,6 @@ int omap3_dpll4_set_rate(struct clk *clk, unsigned long rate)
 
 /* Common clock code */
 
-/*
- * As it is structured now, this will prevent an OMAP2/3 multiboot
- * kernel from compiling.  This will need further attention.
- */
-#if defined(CONFIG_ARCH_OMAP3)
-
 /*
  * Set clocks for bypass mode for reboot to work.
  */
@@ -213,11 +207,14 @@ void omap3_clk_lock_dpll5(void)
  * Switch the MPU rate if specified on cmdline.
  * We cannot do this early until cmdline is parsed.
  */
-static int __init omap2_clk_arch_init(void)
+static int __init omap3xxx_clk_arch_init(void)
 {
 	struct clk *osc_sys_ck, *dpll1_ck, *arm_fck, *core_ck;
 	unsigned long osc_sys_rate;
 
+	if (!cpu_is_omap34xx())
+		return 0;
+
 	if (!mpurate)
 		return -EINVAL;
 
@@ -246,9 +243,6 @@ static int __init omap2_clk_arch_init(void)
 
 	return 0;
 }
-arch_initcall(omap2_clk_arch_init);
-
-
-#endif
+arch_initcall(omap3xxx_clk_arch_init);