--- /dev/null
+/*
+ * Copyright 2004-2006 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de>
+ * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
+ * <armlinux@phytec.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux-v3.h>
+#include <asm/arch/sys_proto.h>
+
+static void __iomem *base = (void __iomem *)IOMUXC_BASE_ADDR;
+
+/*
+ * configures a single pad in the iomuxer
+ */
+int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t pad)
+{
+ u32 mux_ctrl_ofs = (pad & MUX_CTRL_OFS_MASK) >> MUX_CTRL_OFS_SHIFT;
+ u32 mux_mode = (pad & MUX_MODE_MASK) >> MUX_MODE_SHIFT;
+ u32 sel_input_ofs = (pad & MUX_SEL_INPUT_OFS_MASK) >> MUX_SEL_INPUT_OFS_SHIFT;
+ u32 sel_input = (pad & MUX_SEL_INPUT_MASK) >> MUX_SEL_INPUT_SHIFT;
+ u32 pad_ctrl_ofs = (pad & MUX_PAD_CTRL_OFS_MASK) >> MUX_PAD_CTRL_OFS_SHIFT;
+ u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT;
+
+ if (mux_ctrl_ofs)
+ __raw_writel(mux_mode, base + mux_ctrl_ofs);
+
+ if (sel_input_ofs)
+ __raw_writel(sel_input, base + sel_input_ofs);
+
+ if (!(pad_ctrl & NO_PAD_CTRL) && pad_ctrl_ofs)
+ __raw_writel(pad_ctrl, base + pad_ctrl_ofs);
+
+ return 0;
+}
+
+int mxc_iomux_v3_setup_multiple_pads(const iomux_v3_cfg_t *pad_list, unsigned count)
+{
+ const iomux_v3_cfg_t *p = pad_list;
+ int i;
+ int ret;
+
+ for (i = 0; i < count; i++) {
+ ret = mxc_iomux_v3_setup_pad(*p);
+ if (ret)
+ return ret;
+ p++;
+ }
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
+ * <armlinux@phytec.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#ifndef __MACH_IOMUX_V3_H__
+#define __MACH_IOMUX_V3_H__
+
+#include <linux/compiler.h>
+
+/*
+ * build IOMUX_PAD structure
+ *
+ * This iomux scheme is based around pads, which are the physical balls
+ * on the processor.
+ *
+ * - Each pad has a pad control register (IOMUXC_SW_PAD_CTRL_x) which controls
+ * things like driving strength and pullup/pulldown.
+ * - Each pad can have but not necessarily does have an output routing register
+ * (IOMUXC_SW_MUX_CTL_PAD_x).
+ * - Each pad can have but not necessarily does have an input routing register
+ * (IOMUXC_x_SELECT_INPUT)
+ *
+ * The three register sets do not have a fixed offset to each other,
+ * hence we order this table by pad control registers (which all pads
+ * have) and put the optional i/o routing registers into additional
+ * fields.
+ *
+ * The naming convention for the pad modes is MX35_PAD_<padname>__<padmode>
+ * If <padname> or <padmode> refers to a GPIO, it is named
+ * GPIO_<unit>_<num>
+ *
+ * IOMUX/PAD Bit field definitions
+ *
+ * MUX_CTRL_OFS: 0..11 (12)
+ * PAD_CTRL_OFS: 12..23 (12)
+ * SEL_INPUT_OFS: 24..35 (12)
+ * MUX_MODE + SION: 36..40 (5)
+ * PAD_CTRL + NO_PAD_CTRL: 41..57 (17)
+ * SEL_INP: 58..61 (4)
+ * reserved: 63 (1)
+*/
+
+typedef u64 iomux_v3_cfg_t;
+
+#define MUX_CTRL_OFS_SHIFT 0
+#define MUX_CTRL_OFS_MASK ((iomux_v3_cfg_t)0xfff << MUX_CTRL_OFS_SHIFT)
+#define MUX_PAD_CTRL_OFS_SHIFT 12
+#define MUX_PAD_CTRL_OFS_MASK ((iomux_v3_cfg_t)0xfff << MUX_PAD_CTRL_OFS_SHIFT)
+#define MUX_SEL_INPUT_OFS_SHIFT 24
+#define MUX_SEL_INPUT_OFS_MASK ((iomux_v3_cfg_t)0xfff << MUX_SEL_INPUT_OFS_SHIFT)
+
+#define MUX_MODE_SHIFT 36
+#define MUX_MODE_MASK ((iomux_v3_cfg_t)0x1f << MUX_MODE_SHIFT)
+#define MUX_PAD_CTRL_SHIFT 41
+#define MUX_PAD_CTRL_MASK ((iomux_v3_cfg_t)0x1ffff << MUX_PAD_CTRL_SHIFT)
+#define MUX_SEL_INPUT_SHIFT 58
+#define MUX_SEL_INPUT_MASK ((iomux_v3_cfg_t)0xf << MUX_SEL_INPUT_SHIFT)
+
+#define MUX_PAD_CTRL(x) ((iomux_v3_cfg_t)(x) << MUX_PAD_CTRL_SHIFT)
+
+#define IOMUX_PAD(_pad_ctrl_ofs, _mux_ctrl_ofs, _mux_mode, _sel_input_ofs, \
+ _sel_input, _pad_ctrl) \
+ (((iomux_v3_cfg_t)(_mux_ctrl_ofs) << MUX_CTRL_OFS_SHIFT) | \
+ ((iomux_v3_cfg_t)(_mux_mode) << MUX_MODE_SHIFT) | \
+ ((iomux_v3_cfg_t)(_pad_ctrl_ofs) << MUX_PAD_CTRL_OFS_SHIFT) | \
+ ((iomux_v3_cfg_t)(_pad_ctrl) << MUX_PAD_CTRL_SHIFT) | \
+ ((iomux_v3_cfg_t)(_sel_input_ofs) << MUX_SEL_INPUT_OFS_SHIFT) | \
+ ((iomux_v3_cfg_t)(_sel_input) << MUX_SEL_INPUT_SHIFT))
+
+#define NEW_PAD_CTRL(cfg, pad) (((cfg) & ~MUX_PAD_CTRL_MASK) | MUX_PAD_CTRL(pad))
+/*
+ * Use to set PAD control
+ */
+
+#define NO_PAD_CTRL (1 << 16)
+#define PAD_CTL_DVS (1 << 13)
+#define PAD_CTL_HYS (1 << 8)
+
+#define PAD_CTL_PKE (1 << 7)
+#define PAD_CTL_PUE (1 << 6 | PAD_CTL_PKE)
+#define PAD_CTL_PUS_100K_DOWN (0 << 4 | PAD_CTL_PUE)
+#define PAD_CTL_PUS_47K_UP (1 << 4 | PAD_CTL_PUE)
+#define PAD_CTL_PUS_100K_UP (2 << 4 | PAD_CTL_PUE)
+#define PAD_CTL_PUS_22K_UP (3 << 4 | PAD_CTL_PUE)
+
+#define PAD_CTL_ODE (1 << 3)
+
+#define PAD_CTL_DSE_LOW (0 << 1)
+#define PAD_CTL_DSE_MED (1 << 1)
+#define PAD_CTL_DSE_HIGH (2 << 1)
+#define PAD_CTL_DSE_MAX (3 << 1)
+
+#define PAD_CTL_SRE_FAST (1 << 0)
+#define PAD_CTL_SRE_SLOW (0 << 0)
+
+#define IOMUX_CONFIG_SION (0x1 << 4)
+
+/*
+ * sets up a single pad in the iomuxer
+ */
+int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t pad);
+
+/*
+ * sets up mutliple pads
+ * convenient way to call the above function with tables
+ */
+int mxc_iomux_v3_setup_multiple_pads(const iomux_v3_cfg_t *pad_list, unsigned count);
+
+#endif /* __MACH_IOMUX_V3_H__*/
+
projects / karo-tx-uboot.git / commitdiff