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authorLinus Walleij <linus.walleij@linaro.org>2012-10-11 14:33:42 +0200
committerLinus Walleij <linus.walleij@linaro.org>2012-10-15 09:09:27 +0200
commitb7213702662e2139be92c4a3efe6682529f7a729 (patch)
tree846109e12af01995ad62df4ce4a4c1559a60d4ad /drivers/pinctrl/pinctrl-nomadik.c
parentb51b16a36fd8fd27b2e392a86f2637deaaf4267f (diff)
downloadblackbird-op-linux-b7213702662e2139be92c4a3efe6682529f7a729.tar.gz
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pinctrl/nomadik: provide stubs for legacy Nomadik
The compilation of the pinctrl driver failed on the legacy Nomadik NHK8815 platform because it was not providing the PRCMU interfaces needed to support the extended alternate functions used by the ux500 series. Solve this by providing some stubs for the legacy platform, to avoid too much #ifdefs in the code per se. Theoretically this actually allows the Nomadik and Ux500 to have a single kernel image with support for the PRCM registers on the Ux500 (though they have incompatible archs, but the spirit is there). Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-nomadik.c')
-rw-r--r--drivers/pinctrl/pinctrl-nomadik.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-nomadik.c b/drivers/pinctrl/pinctrl-nomadik.c
index fec9c30133d4..f640f13f73ca 100644
--- a/drivers/pinctrl/pinctrl-nomadik.c
+++ b/drivers/pinctrl/pinctrl-nomadik.c
@@ -30,7 +30,20 @@
#include <linux/pinctrl/pinconf.h>
/* Since we request GPIOs from ourself */
#include <linux/pinctrl/consumer.h>
+/*
+ * For the U8500 archs, use the PRCMU register interface, for the older
+ * Nomadik, provide some stubs. The functions using these will only be
+ * called on the U8500 series.
+ */
+#ifdef CONFIG_ARCH_U8500
#include <linux/mfd/dbx500-prcmu.h>
+#else
+static inline u32 prcmu_read(unsigned int reg) {
+ return 0;
+}
+static inline void prcmu_write(unsigned int reg, u32 value) {}
+static inline void prcmu_write_masked(unsigned int reg, u32 mask, u32 value) {}
+#endif
#include <asm/mach/irq.h>
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