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| author | Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> | 2014-01-27 22:25:15 +0100 |
|---|---|---|
| committer | Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> | 2014-02-25 18:35:16 +0100 |
| commit | f5b85e42d46978ec6f73704f8370005f9ac54239 (patch) | |
| tree | 054ff3793b0df605b4617000065cbd6523e6b7ca | |
| parent | 2035d39da18feba072bb49067b9984454dc4c07b (diff) | |
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>
| -rw-r--r-- | drivers/pinctrl/mvebu/pinctrl-mvebu.h | 28 |
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); |