| /* |
| * 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 multiple 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); |
| |
| /* |
| * Initialise the iomux controller |
| */ |
| void mxc_iomux_v3_init(void __iomem *iomux_v3_base); |
| |
| #endif /* __MACH_IOMUX_V3_H__*/ |
| |
