ARM: OMAP: Fix omap1 McBSP without CONFIG_OMAP_DSP

As some of the McBSP clocks come from DSP side, DSP needs
to be initialized even without CONFIG_OMAP_DSP.

This feature got broken with recent DSP updates.
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap1/devices.c

@@ -63,7 +63,7 @@ static inline void omap_init_rtc(void) {}
 
 #if defined(CONFIG_OMAP_DSP)
 
-#if defined(CONFIG_ARCH_OMAP1510)
+#if defined(CONFIG_ARCH_OMAP15XX)
 #  define OMAP1_MBOX_SIZE	0x23
 #  define INT_DSP_MAILBOX1	INT_1510_DSP_MAILBOX1
 #elif defined(CONFIG_ARCH_OMAP16XX)

arch/arm/plat-omap/Makefile

@@ -26,4 +26,5 @@ obj-$(CONFIG_OMAP_COMPONENT_VERSION) += component-version.o
 obj-$(CONFIG_OMAP_GPIO_SWITCH) += gpio-switch.o
 
 # DSP subsystem
-obj-$(CONFIG_OMAP_DSP) += dsp/ mailbox.o
+obj-y += dsp/
+obj-$(CONFIG_OMAP_DSP) += mailbox.o

arch/arm/plat-omap/dsp/dsp_common.c

@@ -43,6 +43,8 @@
 #define dsp_boot_config(mode)	writel((mode), DSP_IPI_DSPBOOTCONFIG)
 #endif
 
+struct omap_dsp *omap_dsp;
+
 #if defined(CONFIG_ARCH_OMAP1)
 struct clk *dsp_ck_handle;
 struct clk *api_ck_handle;
@@ -371,7 +373,8 @@ static void dsp_cpustat_update(void)
 			__dsp_core_enable();
 #endif
 			cpustat.stat = CPUSTAT_RUN;
-			enable_irq(omap_dsp->mmu_irq);
+			if (omap_dsp != NULL)
+				enable_irq(omap_dsp->mmu_irq);
 		}
 		return;
 	}
@@ -379,7 +382,8 @@ static void dsp_cpustat_update(void)
 	/* cpustat.req < CPUSTAT_RUN */
 
 	if (cpustat.stat == CPUSTAT_RUN) {
-		disable_irq(omap_dsp->mmu_irq);
+		if (omap_dsp != NULL)
+			disable_irq(omap_dsp->mmu_irq);
 #ifdef CONFIG_ARCH_OMAP1
 		clk_disable(api_ck_handle);
 #endif

arch/arm/plat-omap/dsp/dsp_core.c

@@ -40,7 +40,6 @@ MODULE_AUTHOR("Toshihiro Kobayashi <toshihiro.kobayashi@nokia.com>");
 MODULE_DESCRIPTION("OMAP DSP driver module");
 MODULE_LICENSE("GPL");
 
-struct omap_dsp *omap_dsp;
 static struct sync_seq *mbseq;
 static u16 mbseq_expect_tmp;
 static u16 *mbseq_expect = &mbseq_expect_tmp;