diff options
Diffstat (limited to 'arch/arm/mach-imx/include/mach/iomux-v3.h')
| -rw-r--r-- | arch/arm/mach-imx/include/mach/iomux-v3.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/include/mach/iomux-v3.h b/arch/arm/mach-imx/include/mach/iomux-v3.h index b8cc9af68a..271fe94a00 100644 --- a/arch/arm/mach-imx/include/mach/iomux-v3.h +++ b/arch/arm/mach-imx/include/mach/iomux-v3.h @@ -16,6 +16,8 @@ #ifndef __MACH_IOMUX_V3_H__ #define __MACH_IOMUX_V3_H__ +#include <io.h> + /* * build IOMUX_PAD structure * @@ -76,6 +78,14 @@ typedef u64 iomux_v3_cfg_t; ((iomux_v3_cfg_t)(_sel_input_ofs) << MUX_SEL_INPUT_OFS_SHIFT) | \ ((iomux_v3_cfg_t)(_sel_input) << MUX_SEL_INPUT_SHIFT)) +#define IOMUX_PAD_FIELD(name, pad) (((pad) & name##_MASK) >> name##_SHIFT) +#define IOMUX_CTRL_OFS(pad) IOMUX_PAD_FIELD(MUX_CTRL_OFS, pad) +#define IOMUX_MODE(pad) IOMUX_PAD_FIELD(MUX_MODE, pad) +#define IOMUX_SEL_INPUT_OFS(pad) IOMUX_PAD_FIELD(MUX_SEL_INPUT_OFS, pad) +#define IOMUX_SEL_INPUT(pad) IOMUX_PAD_FIELD(MUX_SEL_INPUT, pad) +#define IOMUX_PAD_CTRL_OFS(pad) IOMUX_PAD_FIELD(MUX_PAD_CTRL_OFS, pad) +#define IOMUX_PAD_CTRL(pad) IOMUX_PAD_FIELD(MUX_PAD_CTRL, pad) + #define NEW_PAD_CTRL(cfg, pad) (((cfg) & ~MUX_PAD_CTRL_MASK) | MUX_PAD_CTRL(pad)) /* * Use to set PAD control @@ -104,6 +114,57 @@ typedef u64 iomux_v3_cfg_t; #define IOMUX_CONFIG_SION (0x1 << 4) +#define SHARE_MUX_CONF_REG 0x1 +#define ZERO_OFFSET_VALID 0x2 +#define IMX7_PINMUX_LPSR 0x4 + +static inline void iomux_v3_setup_pad(void __iomem *iomux, unsigned int flags, + u32 mux_reg, u32 conf_reg, u32 input_reg, + u32 mux_val, u32 conf_val, u32 input_val) +{ + const bool mux_ok = !!mux_reg || (flags & ZERO_OFFSET_VALID); + const bool conf_ok = !!conf_reg; + const bool input_ok = !!input_reg; + + /* + * The sel_input registers for the LPSR controller pins are in the regular pinmux + * controller, so bend the register offset over to the other controller. + */ + if (flags & IMX7_PINMUX_LPSR) + input_reg += 0x70000; + + if (flags & SHARE_MUX_CONF_REG) { + mux_val |= conf_val; + } else { + if (conf_ok) + writel(conf_val, iomux + conf_reg); + } + + if (mux_ok) + writel(mux_val, iomux + mux_reg); + + if (input_ok) + writel(input_val, iomux + input_reg); +} + +static inline void imx_setup_pad(void __iomem *iomux, iomux_v3_cfg_t pad) +{ + uint32_t pad_ctrl; + + pad_ctrl = IOMUX_PAD_CTRL(pad); + pad_ctrl = (pad_ctrl & NO_PAD_CTRL) ? 0 : pad_ctrl, + + iomux_v3_setup_pad(iomux, 0, + IOMUX_CTRL_OFS(pad), + IOMUX_PAD_CTRL_OFS(pad), + IOMUX_SEL_INPUT_OFS(pad), + IOMUX_MODE(pad), + pad_ctrl, + IOMUX_SEL_INPUT(pad)); +} + + + /* * setups a single pad in the iomuxer */ |