From f5b85e42d46978ec6f73704f8370005f9ac54239 Mon Sep 17 00:00:00 2001 From: Sebastian Hesselbarth Date: Mon, 27 Jan 2014 22:25:15 +0100 Subject: 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 Signed-off-by: Thomas Petazzoni Tested-by: Andrew Lunn --- drivers/pinctrl/mvebu/pinctrl-mvebu.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'drivers/pinctrl/mvebu') diff --git a/drivers/pinctrl/mvebu/pinctrl-mvebu.h b/drivers/pinctrl/mvebu/pinctrl-mvebu.h index b20d1d778c7..c73f4eea62a 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); -- cgit v1.2.3-70-g09d2