ARM: OMAP: Pre-3430 clean-up for dmtimer.c

Cleanup DM timer list for OMAP2 and OMAP1 to allow
adding support for 3430.

Signed-off-by: Syed Mohammed Khasim  <x0khasim@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c
index 3856f5a..9c517ae 100644 (file)
--- a/arch/arm/plat-omap/dmtimer.c
+++ b/arch/arm/plat-omap/dmtimer.c
@@ -48,7 +48,7 @@
 #define OMAP_TIMER_COUNTER_REG         0x28
 #define OMAP_TIMER_LOAD_REG            0x2c
 #define OMAP_TIMER_TRIGGER_REG         0x30
-#define OMAP_TIMER_WRITE_PEND_REG      0x34
+#define OMAP_TIMER_WRITE_PEND_REG      0x34
 #define OMAP_TIMER_MATCH_REG           0x38
 #define OMAP_TIMER_CAPTURE_REG         0x3c
 #define OMAP_TIMER_IF_CTRL_REG         0x40
@@ -82,8 +82,11 @@ struct omap_dm_timer {
 
 #define omap_dm_clk_enable(x)
 #define omap_dm_clk_disable(x)
+#define omap2_dm_timers                        NULL
+#define omap2_dm_source_names          NULL
+#define omap2_dm_source_clocks         NULL
 
-static struct omap_dm_timer dm_timers[] = {
+static struct omap_dm_timer omap1_dm_timers[] = {
        { .phys_base = 0xfffb1400, .irq = INT_1610_GPTIMER1 },
        { .phys_base = 0xfffb1c00, .irq = INT_1610_GPTIMER2 },
        { .phys_base = 0xfffb2400, .irq = INT_1610_GPTIMER3 },
@@ -94,12 +97,15 @@ static struct omap_dm_timer dm_timers[] = {
        { .phys_base = 0xfffbd400, .irq = INT_1610_GPTIMER8 },
 };
 
+static const int dm_timer_count = ARRAY_SIZE(omap1_dm_timers);
+
 #elif defined(CONFIG_ARCH_OMAP2)
 
-#define omap_dm_clk_enable(x) clk_enable(x)
-#define omap_dm_clk_disable(x) clk_disable(x)
+#define omap_dm_clk_enable(x)          clk_enable(x)
+#define omap_dm_clk_disable(x)         clk_disable(x)
+#define omap1_dm_timers                        NULL
 
-static struct omap_dm_timer dm_timers[] = {
+static struct omap_dm_timer omap2_dm_timers[] = {
        { .phys_base = 0x48028000, .irq = INT_24XX_GPTIMER1 },
        { .phys_base = 0x4802a000, .irq = INT_24XX_GPTIMER2 },
        { .phys_base = 0x48078000, .irq = INT_24XX_GPTIMER3 },
@@ -114,13 +120,15 @@ static struct omap_dm_timer dm_timers[] = {
        { .phys_base = 0x4808a000, .irq = INT_24XX_GPTIMER12 },
 };
 
-static const char *dm_source_names[] = {
+static const char *omap2_dm_source_names[] __initdata = {
        "sys_ck",
        "func_32k_ck",
-       "alt_ck"
+       "alt_ck",
+       NULL
 };
 
-static struct clk *dm_source_clocks[3];
+static struct clk **omap2_dm_source_clocks[3];
+static const int dm_timer_count = ARRAY_SIZE(omap2_dm_timers);
 
 #else
 
@@ -128,7 +136,10 @@ static struct clk *dm_source_clocks[3];
 
 #endif
 
-static const int dm_timer_count = ARRAY_SIZE(dm_timers);
+static struct omap_dm_timer *dm_timers;
+static char **dm_source_names;
+static struct clk **dm_source_clocks;
+
 static spinlock_t dm_timer_lock;
 
 static inline u32 omap_dm_timer_read_reg(struct omap_dm_timer *timer, int reg)
@@ -171,7 +182,7 @@ static void omap_dm_timer_reset(struct omap_dm_timer *timer)
        l = omap_dm_timer_read_reg(timer, OMAP_TIMER_OCP_CFG_REG);
        l |= 0x02 << 3;
 
-       if (cpu_class_is_omap2() && timer == &dm_timers[0]) {
+       if (cpu_class_is_omap2() && (timer == &dm_timers[0])) {
                /* Enable wake-up only for GPT1 on OMAP2 CPUs*/
                l |= 1 << 2;
                /* Non-posted mode */
@@ -486,7 +497,7 @@ int omap_dm_timers_active(void)
        return 0;
 }
 
-int omap_dm_timer_init(void)
+int __init omap_dm_timer_init(void)
 {
        struct omap_dm_timer *timer;
        int i;
@@ -495,27 +506,35 @@ int omap_dm_timer_init(void)
                return -ENODEV;
 
        spin_lock_init(&dm_timer_lock);
-#ifdef CONFIG_ARCH_OMAP2
-       for (i = 0; i < ARRAY_SIZE(dm_source_names); i++) {
-               dm_source_clocks[i] = clk_get(NULL, dm_source_names[i]);
-               BUG_ON(dm_source_clocks[i] == NULL);
+
+       if (cpu_class_is_omap1())
+               dm_timers = omap1_dm_timers;
+       else if (cpu_is_omap24xx()) {
+               dm_timers = omap2_dm_timers;
+               dm_source_names = (char **)omap2_dm_source_names;
+               dm_source_clocks = (struct clk **)omap2_dm_source_clocks;
        }
-#endif
+
+       if (cpu_class_is_omap2()) {
+               for (i = 0; dm_source_names[i] != NULL; i++) {
+                       dm_source_clocks[i] = clk_get(NULL, dm_source_names[i]);
+               }
+       }
+
        if (cpu_is_omap243x())
                dm_timers[0].phys_base = 0x49018000;
 
        for (i = 0; i < dm_timer_count; i++) {
-#ifdef CONFIG_ARCH_OMAP2
-               char clk_name[16];
-#endif
-
                timer = &dm_timers[i];
-               timer->io_base = (void __iomem *) io_p2v(timer->phys_base);
+               timer->io_base = (void __iomem *)io_p2v(timer->phys_base);
 #ifdef CONFIG_ARCH_OMAP2
-               sprintf(clk_name, "gpt%d_ick", i + 1);
-               timer->iclk = clk_get(NULL, clk_name);
-               sprintf(clk_name, "gpt%d_fck", i + 1);
-               timer->fclk = clk_get(NULL, clk_name);
+               if (cpu_class_is_omap2()) {
+                       char clk_name[16];
+                       sprintf(clk_name, "gpt%d_ick", i + 1);
+                       timer->iclk = clk_get(NULL, clk_name);
+                       sprintf(clk_name, "gpt%d_fck", i + 1);
+                       timer->fclk = clk_get(NULL, clk_name);
+               }
 #endif
        }