ARM: OMAP2+: Add quirk support for legacy platform data init

We want to drop the board-*.c files but keep things working.
Let's make it a bit easier to support legacy platform data
init with quirks. This also keeps board-generic.c clean from
board specific hacks.

For now, the quirks table is empty, that is populated
in the later patches.

Signed-off-by: Tony Lindgren <tony@atomide.com>

4 files changed, 43 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index afb457c3135b..f8d4a1b83864 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -233,7 +233,7 @@ obj-y					+= drm.o
 endif
 
 # Specific board support
-obj-$(CONFIG_MACH_OMAP_GENERIC)         += board-generic.o
+obj-$(CONFIG_MACH_OMAP_GENERIC)         += board-generic.o pdata-quirks.o
 obj-$(CONFIG_MACH_OMAP_H4)              += board-h4.o
 obj-$(CONFIG_MACH_OMAP_2430SDP)         += board-2430sdp.o
 obj-$(CONFIG_MACH_OMAP3_BEAGLE)         += board-omap3beagle.o
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 39c78387ddec..022b0df94e0d 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -56,6 +56,7 @@ static void __init omap_generic_init(void)
         omap_sdrc_init(NULL, NULL);
 
         of_platform_populate(NULL, omap_dt_match_table, NULL, NULL);
+        pdata_quirks_init();
 
         /*
          * HACK: call display setup code for selected boards to enable omapdss.
diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index 4a5684b96492..fd059e02574d 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -288,6 +288,8 @@ static inline void omap4_cpu_resume(void)
 
 #endif
 
+void pdata_quirks_init(void);
+
 struct omap_sdrc_params;
 extern void omap_sdrc_init(struct omap_sdrc_params *sdrc_cs0,
                                       struct omap_sdrc_params *sdrc_cs1);
diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
new file mode 100644
index 000000000000..e6051998f929
--- /dev/null
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -0,0 +1,39 @@
+/*
+ * Legacy platform_data quirks
+ *
+ * Copyright (C) 2013 Texas Instruments
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/clk.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include "common.h"
+#include "common-board-devices.h"
+#include "dss-common.h"
+
+struct pdata_init {
+        const char *compatible;
+        void (*fn)(void);
+};
+
+static struct pdata_init pdata_quirks[] __initdata = {
+        { /* sentinel */ },
+};
+
+void __init pdata_quirks_init(void)
+{
+        struct pdata_init *quirks = pdata_quirks;
+
+        while (quirks->compatible) {
+                if (of_machine_is_compatible(quirks->compatible)) {
+                        if (quirks->fn)
+                                quirks->fn();
+                        break;
+                }
+                quirks++;
+        }
+}