ARM: OMAP: Add dmtimer support for OMAP3

Add DM timer support for OMAP3.

Fixed source clocks for 3430 by Paul Walmsley <paul@pwsan.com>.
Signed-off-by: Syed Mohammed Khasim <x0khasim@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/plat-omap/dmtimer.c

@@ -70,7 +70,7 @@
 struct omap_dm_timer {
 	unsigned long phys_base;
 	int irq;
-#ifdef CONFIG_ARCH_OMAP2
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
 	struct clk *iclk, *fclk;
 #endif
 	void __iomem *io_base;
@@ -85,6 +85,9 @@ struct omap_dm_timer {
 #define omap2_dm_timers			NULL
 #define omap2_dm_source_names		NULL
 #define omap2_dm_source_clocks		NULL
+#define omap3_dm_timers			NULL
+#define omap3_dm_source_names		NULL
+#define omap3_dm_source_clocks		NULL
 
 static struct omap_dm_timer omap1_dm_timers[] = {
 	{ .phys_base = 0xfffb1400, .irq = INT_1610_GPTIMER1 },
@@ -104,6 +107,9 @@ static const int dm_timer_count = ARRAY_SIZE(omap1_dm_timers);
 #define omap_dm_clk_enable(x)		clk_enable(x)
 #define omap_dm_clk_disable(x)		clk_disable(x)
 #define omap1_dm_timers			NULL
+#define omap3_dm_timers			NULL
+#define omap3_dm_source_names		NULL
+#define omap3_dm_source_clocks		NULL
 
 static struct omap_dm_timer omap2_dm_timers[] = {
 	{ .phys_base = 0x48028000, .irq = INT_24XX_GPTIMER1 },
@@ -130,6 +136,39 @@ static const char *omap2_dm_source_names[] __initdata = {
 static struct clk **omap2_dm_source_clocks[3];
 static const int dm_timer_count = ARRAY_SIZE(omap2_dm_timers);
 
+#elif defined(CONFIG_ARCH_OMAP3)
+
+#define omap_dm_clk_enable(x)		clk_enable(x)
+#define omap_dm_clk_disable(x)		clk_disable(x)
+#define omap1_dm_timers			NULL
+#define omap2_dm_timers			NULL
+#define omap2_dm_source_names		NULL
+#define omap2_dm_source_clocks		NULL
+
+static struct omap_dm_timer omap3_dm_timers[] = {
+	{ .phys_base = 0x48318000, .irq = INT_24XX_GPTIMER1 },
+	{ .phys_base = 0x49032000, .irq = INT_24XX_GPTIMER2 },
+	{ .phys_base = 0x49034000, .irq = INT_24XX_GPTIMER3 },
+	{ .phys_base = 0x49036000, .irq = INT_24XX_GPTIMER4 },
+	{ .phys_base = 0x49038000, .irq = INT_24XX_GPTIMER5 },
+	{ .phys_base = 0x4903A000, .irq = INT_24XX_GPTIMER6 },
+	{ .phys_base = 0x4903C000, .irq = INT_24XX_GPTIMER7 },
+	{ .phys_base = 0x4903E000, .irq = INT_24XX_GPTIMER8 },
+	{ .phys_base = 0x49040000, .irq = INT_24XX_GPTIMER9 },
+	{ .phys_base = 0x48086000, .irq = INT_24XX_GPTIMER10 },
+	{ .phys_base = 0x48088000, .irq = INT_24XX_GPTIMER11 },
+	{ .phys_base = 0x48304000, .irq = INT_24XX_GPTIMER12 },
+};
+
+static const char *omap3_dm_source_names[] __initdata = {
+	"sys_ck",
+	"omap_32k_fck",
+	NULL
+};
+
+static struct clk **omap3_dm_source_clocks[2];
+static const int dm_timer_count = ARRAY_SIZE(omap3_dm_timers);
+
 #else
 
 #error OMAP architecture not supported!
@@ -310,7 +349,7 @@ __u32 omap_dm_timer_modify_idlect_mask(__u32 inputmask)
 	return inputmask;
 }
 
-#elif defined(CONFIG_ARCH_OMAP2)
+#elif defined(CONFIG_ARCH_OMAP2) || defined (CONFIG_ARCH_OMAP3)
 
 struct clk *omap_dm_timer_get_fclk(struct omap_dm_timer *timer)
 {
@@ -502,7 +541,7 @@ int __init omap_dm_timer_init(void)
 	struct omap_dm_timer *timer;
 	int i;
 
-	if (!(cpu_is_omap16xx() || cpu_is_omap24xx()))
+	if (!(cpu_is_omap16xx() || cpu_class_is_omap2()))
 		return -ENODEV;
 
 	spin_lock_init(&dm_timer_lock);
@@ -513,6 +552,10 @@ int __init omap_dm_timer_init(void)
 		dm_timers = omap2_dm_timers;
 		dm_source_names = (char **)omap2_dm_source_names;
 		dm_source_clocks = (struct clk **)omap2_dm_source_clocks;
+	} else if (cpu_is_omap34xx()) {
+		dm_timers = omap3_dm_timers;
+		dm_source_names = (char **)omap3_dm_source_names;
+		dm_source_clocks = (struct clk **)omap3_dm_source_clocks;
 	}
 
 	if (cpu_class_is_omap2())
@@ -525,7 +568,7 @@ int __init omap_dm_timer_init(void)
 	for (i = 0; i < dm_timer_count; i++) {
 		timer = &dm_timers[i];
 		timer->io_base = (void __iomem *)io_p2v(timer->phys_base);
-#ifdef CONFIG_ARCH_OMAP2
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
 		if (cpu_class_is_omap2()) {
 			char clk_name[16];
 			sprintf(clk_name, "gpt%d_ick", i + 1);