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authorSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>2014-01-28 01:25:15 +0400
committerSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>2014-02-25 21:35:16 +0400
commitf5b85e42d46978ec6f73704f8370005f9ac54239 (patch)
tree054ff3793b0df605b4617000065cbd6523e6b7ca /drivers/pinctrl/mvebu
parent2035d39da18feba072bb49067b9984454dc4c07b (diff)
downloadlinux-f5b85e42d46978ec6f73704f8370005f9ac54239.tar.xz
pinctrl: mvebu: add common mpp reg helper to mvebu pinctrl include
This adds some defines and helper functions for the common mpp reg layout to mvebu pinctrl include. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Tested-by: Andrew Lunn <andrew@lunn.ch>
Diffstat (limited to 'drivers/pinctrl/mvebu')
-rw-r--r--drivers/pinctrl/mvebu/pinctrl-mvebu.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/pinctrl/mvebu/pinctrl-mvebu.h b/drivers/pinctrl/mvebu/pinctrl-mvebu.h
index b20d1d778c75..c73f4eea62ac 100644
--- a/drivers/pinctrl/mvebu/pinctrl-mvebu.h
+++ b/drivers/pinctrl/mvebu/pinctrl-mvebu.h
@@ -186,6 +186,34 @@ struct mvebu_pinctrl_soc_info {
.npins = _npins, \
}
+#define MVEBU_MPPS_PER_REG 8
+#define MVEBU_MPP_BITS 4
+#define MVEBU_MPP_MASK 0xf
+
+static inline int default_mpp_ctrl_get(void __iomem *base, unsigned int pid,
+ unsigned long *config)
+{
+ unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
+ unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
+
+ *config = (readl(base + off) >> shift) & MVEBU_MPP_MASK;
+
+ return 0;
+}
+
+static inline int default_mpp_ctrl_set(void __iomem *base, unsigned int pid,
+ unsigned long config)
+{
+ unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
+ unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
+ unsigned long reg;
+
+ reg = readl(base + off) & ~(MVEBU_MPP_MASK << shift);
+ writel(reg | (config << shift), base + off);
+
+ return 0;
+}
+
int mvebu_pinctrl_probe(struct platform_device *pdev);
int mvebu_pinctrl_remove(struct platform_device *pdev);