OMAP2/3/4 clock: combine all omap2_clk_functions

The struct clk_functions for OMAP2, 3, and 4 are all essentially the
same, so combine them.  This removes one multi-OMAP kernel impediment
and saves memory on multi-OMAP builds.

The stubs for omap2_clk_{init,exit}_cpufreq() code will removed once
the OPP layer code that's currently in Kevin's PM branch is merged.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-omap2/clock.c

@@ -351,3 +351,20 @@ void omap2_clk_disable_unused(struct clk *clk)
 		pwrdm_clkdm_state_switch(clk->clkdm);
 }
 #endif
+
+/* Common data */
+
+struct clk_functions omap2_clk_functions = {
+	.clk_enable		= omap2_clk_enable,
+	.clk_disable		= omap2_clk_disable,
+	.clk_round_rate		= omap2_clk_round_rate,
+	.clk_set_rate		= omap2_clk_set_rate,
+	.clk_set_parent		= omap2_clk_set_parent,
+	.clk_disable_unused	= omap2_clk_disable_unused,
+#ifdef CONFIG_CPU_FREQ
+	/* These will be removed when the OPP code is integrated */
+	.clk_init_cpufreq_table	= omap2_clk_init_cpufreq_table,
+	.clk_exit_cpufreq_table	= omap2_clk_exit_cpufreq_table,
+#endif
+};
+

arch/arm/mach-omap2/clock.h

@@ -105,5 +105,12 @@ extern const struct clksel_rate gpt_32k_rates[];
 extern const struct clksel_rate gpt_sys_rates[];
 extern const struct clksel_rate gfx_l3_rates[];
 
+#if defined(CONFIG_ARCH_OMAP24XX) && defined(CONFIG_CPU_FREQ)
+extern void omap2_clk_init_cpufreq_table(struct cpufreq_frequency_table **table);
+extern void omap2_clk_exit_cpufreq_table(struct cpufreq_frequency_table **table);
+#else
+#define omap2_clk_init_cpufreq_table	0
+#define omap2_clk_exit_cpufreq_table	0
+#endif
 
 #endif

arch/arm/mach-omap2/clock2xxx.c

@@ -453,13 +453,16 @@ int omap2_select_table_rate(struct clk *clk, unsigned long rate)
  */
 static struct cpufreq_frequency_table *freq_table;
 
-void omap2_clk_init_cpufreq_table(struct cpufreq_frequency_table **table)
+void omap2xxx_clk_init_cpufreq_table(struct cpufreq_frequency_table **table)
 {
 	const struct prcm_config *prcm;
 	long sys_ck_rate;
 	int i = 0;
 	int tbl_sz = 0;
 
+	if (!cpu_is_omap2xxx())
+		return;
+
 	sys_ck_rate = clk_get_rate(sclk);
 
 	for (prcm = rate_table; prcm->mpu_speed; prcm++) {
@@ -516,26 +519,16 @@ void omap2_clk_init_cpufreq_table(struct cpufreq_frequency_table **table)
 	*table = &freq_table[0];
 }
 
-void omap2_clk_exit_cpufreq_table(struct cpufreq_frequency_table **table)
+void omap2xxx_clk_exit_cpufreq_table(struct cpufreq_frequency_table **table)
 {
+	if (!cpu_is_omap2xxx())
+		return;
+
 	kfree(freq_table);
 }
 
 #endif
 
-struct clk_functions omap2_clk_functions = {
-	.clk_enable		= omap2_clk_enable,
-	.clk_disable		= omap2_clk_disable,
-	.clk_round_rate		= omap2_clk_round_rate,
-	.clk_set_rate		= omap2_clk_set_rate,
-	.clk_set_parent		= omap2_clk_set_parent,
-	.clk_disable_unused	= omap2_clk_disable_unused,
-#ifdef	CONFIG_CPU_FREQ
-	.clk_init_cpufreq_table	= omap2_clk_init_cpufreq_table,
-	.clk_exit_cpufreq_table	= omap2_clk_exit_cpufreq_table,
-#endif
-};
-
 static u32 omap2_get_apll_clkin(void)
 {
 	u32 aplls, srate = 0;

arch/arm/mach-omap2/clock34xx.c

@@ -258,15 +258,6 @@ int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate)
  */
 #if defined(CONFIG_ARCH_OMAP3)
 
-struct clk_functions omap2_clk_functions = {
-	.clk_enable		= omap2_clk_enable,
-	.clk_disable		= omap2_clk_disable,
-	.clk_round_rate		= omap2_clk_round_rate,
-	.clk_set_rate		= omap2_clk_set_rate,
-	.clk_set_parent		= omap2_clk_set_parent,
-	.clk_disable_unused	= omap2_clk_disable_unused,
-};
-
 /*
  * Set clocks for bypass mode for reboot to work.
  */

arch/arm/mach-omap2/clock44xx.c

@@ -13,15 +13,6 @@
 #include <linux/errno.h>
 #include "clock.h"
 
-struct clk_functions omap2_clk_functions = {
-	.clk_enable		= omap2_clk_enable,
-	.clk_disable		= omap2_clk_disable,
-	.clk_round_rate		= omap2_clk_round_rate,
-	.clk_set_rate		= omap2_clk_set_rate,
-	.clk_set_parent		= omap2_clk_set_parent,
-	.clk_disable_unused	= omap2_clk_disable_unused,
-};
-
 const struct clkops clkops_noncore_dpll_ops = {
 	.enable		= &omap3_noncore_dpll_enable,
 	.disable	= &omap3_noncore_dpll_disable,