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authorSascha Hauer <s.hauer@pengutronix.de>2017-02-13 09:26:04 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2017-02-13 09:26:04 +0100
commit30139163b75970fcd58df6b6b987883e36571046 (patch)
tree00bd354cefa617f8474cc73994b1a72c11e770a0 /arch/arm/mach-imx/include/mach/iomux-v3.h
parentbb1a6a2fd3cc41be6db1a1362f311456019317b1 (diff)
parent19df384cec181be4407f82377ffbb3059b1ed748 (diff)
downloadbarebox-30139163b75970fcd58df6b6b987883e36571046.tar.gz
Merge branch 'for-next/imx'
Diffstat (limited to 'arch/arm/mach-imx/include/mach/iomux-v3.h')
-rw-r--r--arch/arm/mach-imx/include/mach/iomux-v3.h61
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 b8cc9af..271fe94 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
*/