Messages in this thread Patch in this message | | | From | Sebastian Hesselbarth <> | Subject | [PATCH v4 05/16] pinctrl: mvebu: add common mpp reg helper to mvebu pinctrl include | Date | Sun, 23 Feb 2014 15:21:03 +0100 |
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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> --- Changelog: v3->v4: - add helper functions provided by Thomas Petazzoni
Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Gregory Clement <gregory.clement@free-electrons.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/pinctrl/mvebu/pinctrl-mvebu.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+)
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); -- 1.8.5.3
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