ARM: OMAP4+: PRM: get rid of cpu_is_omap44xx calls from interrupt init

The compatible DT node is now passed with the prm init, so there is no
need to do node matching here again. Added a new flag to the init data
also, to detect default IRQ support for OMAP4. Also, any booting omap4
DT setup always has a PRM node, so there is no need to check against
the special case where it would be missing.

Signed-off-by: Tero Kristo <t-kristo@ti.com>

3 files changed, 26 insertions, 36 deletions

diff --git a/arch/arm/mach-omap2/prm.h b/arch/arm/mach-omap2/prm.h
index 3936e6c38cea..233bc84fbc0e 100644
--- a/arch/arm/mach-omap2/prm.h
+++ b/arch/arm/mach-omap2/prm.h
@@ -29,9 +29,11 @@ int omap2_prcm_base_init(void);
  *
  * PRM_HAS_IO_WAKEUP: has IO wakeup capability
  * PRM_HAS_VOLTAGE: has voltage domains
+ * PRM_IRQ_DEFAULT: use default irq number for PRM irq
  */
-#define PRM_HAS_IO_WAKEUP       (1 << 0)
-#define PRM_HAS_VOLTAGE         (1 << 1)
+#define PRM_HAS_IO_WAKEUP       BIT(0)
+#define PRM_HAS_VOLTAGE         BIT(1)
+#define PRM_IRQ_DEFAULT         BIT(2)
 
 /*
  * MAX_MODULE_SOFTRESET_WAIT: Maximum microseconds to wait for OMAP
diff --git a/arch/arm/mach-omap2/prm44xx.c b/arch/arm/mach-omap2/prm44xx.c
index 243133c4bf0d..c35ad0bedf81 100644
--- a/arch/arm/mach-omap2/prm44xx.c
+++ b/arch/arm/mach-omap2/prm44xx.c
@@ -703,10 +703,14 @@ static struct prm_ll_data omap44xx_prm_ll_data = {
         .vp_clear_txdone        = omap4_prm_vp_clear_txdone,
 };
 
+static const struct omap_prcm_init_data *prm_init_data;
+
 int __init omap44xx_prm_init(const struct omap_prcm_init_data *data)
 {
         omap_prm_base_init();
 
+        prm_init_data = data;
+
         if (data->flags & PRM_HAS_IO_WAKEUP)
                 prm_features |= PRM_HAS_IO_WAKEUP;
 
@@ -718,16 +722,8 @@ int __init omap44xx_prm_init(const struct omap_prcm_init_data *data)
         return prm_register(&omap44xx_prm_ll_data);
 }
 
-static const struct of_device_id omap_prm_dt_match_table[] = {
-        { .compatible = "ti,omap4-prm" },
-        { .compatible = "ti,omap5-prm" },
-        { .compatible = "ti,dra7-prm" },
-        { }
-};
-
 static int omap44xx_prm_late_init(void)
 {
-        struct device_node *np;
         int irq_num;
 
         if (!(prm_features & PRM_HAS_IO_WAKEUP))
@@ -737,31 +733,23 @@ static int omap44xx_prm_late_init(void)
         if (!of_have_populated_dt())
                 return 0;
 
-        np = of_find_matching_node(NULL, omap_prm_dt_match_table);
-
-        if (!np) {
-                /* Default loaded up with OMAP4 values */
-                if (!cpu_is_omap44xx())
-                        return 0;
-        } else {
-                irq_num = of_irq_get(np, 0);
-                /*
-                 * Already have OMAP4 IRQ num. For all other platforms, we need
-                 * IRQ numbers from DT
-                 */
-                if (irq_num < 0 && !cpu_is_omap44xx()) {
-                        if (irq_num == -EPROBE_DEFER)
-                                return irq_num;
-
-                        /* Have nothing to do */
-                        return 0;
-                }
-
-                /* Once OMAP4 DT is filled as well */
-                if (irq_num >= 0) {
-                        omap4_prcm_irq_setup.irq = irq_num;
-                        omap4_prcm_irq_setup.xlate_irq = NULL;
-                }
+        irq_num = of_irq_get(prm_init_data->np, 0);
+        /*
+         * Already have OMAP4 IRQ num. For all other platforms, we need
+         * IRQ numbers from DT
+         */
+        if (irq_num < 0 && !(prm_init_data->flags & PRM_IRQ_DEFAULT)) {
+                if (irq_num == -EPROBE_DEFER)
+                        return irq_num;
+
+                /* Have nothing to do */
+                return 0;
+        }
+
+        /* Once OMAP4 DT is filled as well */
+        if (irq_num >= 0) {
+                omap4_prcm_irq_setup.irq = irq_num;
+                omap4_prcm_irq_setup.xlate_irq = NULL;
         }
 
         omap44xx_prm_enable_io_wakeup();
diff --git a/arch/arm/mach-omap2/prm_common.c b/arch/arm/mach-omap2/prm_common.c
index 04dfe8f844c9..6832a31e9a70 100644
--- a/arch/arm/mach-omap2/prm_common.c
+++ b/arch/arm/mach-omap2/prm_common.c
@@ -669,7 +669,7 @@ static struct omap_prcm_init_data omap4_prm_data __initdata = {
         .index = TI_CLKM_PRM,
         .init = omap44xx_prm_init,
         .device_inst_offset = OMAP4430_PRM_DEVICE_INST,
-        .flags = PRM_HAS_IO_WAKEUP | PRM_HAS_VOLTAGE,
+        .flags = PRM_HAS_IO_WAKEUP | PRM_HAS_VOLTAGE | PRM_IRQ_DEFAULT,
 };
 #endif