/* * 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__ /* * 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) #define MX51_NUM_GPIO_PORT 4 #define GPIO_PIN_MASK 0x1f #define GPIO_PORT_SHIFT 5 #define GPIO_PORT_MASK (0x7 << GPIO_PORT_SHIFT) #define GPIO_PORTA (0 << GPIO_PORT_SHIFT) #define GPIO_PORTB (1 << GPIO_PORT_SHIFT) #define GPIO_PORTC (2 << GPIO_PORT_SHIFT) #define GPIO_PORTD (3 << GPIO_PORT_SHIFT) #define GPIO_PORTE (4 << GPIO_PORT_SHIFT) #define GPIO_PORTF (5 << GPIO_PORT_SHIFT) /* * setups a single pad in the iomuxer */ int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t pad); /* * setups mutliple pads * convenient way to call the above function with tables */ int mxc_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t *pad_list, unsigned count); /* * Initialise the iomux controller */ void mxc_iomux_v3_init(void __iomem *iomux_v3_base); #endif /* __MACH_IOMUX_V3_H__*/