2 * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
20 #ifndef __MACH_IOMUX_V3_H__
21 #define __MACH_IOMUX_V3_H__
24 * build IOMUX_PAD structure
26 * This iomux scheme is based around pads, which are the physical balls
29 * - Each pad has a pad control register (IOMUXC_SW_PAD_CTRL_x) which controls
30 * things like driving strength and pullup/pulldown.
31 * - Each pad can have but not necessarily does have an output routing register
32 * (IOMUXC_SW_MUX_CTL_PAD_x).
33 * - Each pad can have but not necessarily does have an input routing register
34 * (IOMUXC_x_SELECT_INPUT)
36 * The three register sets do not have a fixed offset to each other,
37 * hence we order this table by pad control registers (which all pads
38 * have) and put the optional i/o routing registers into additional
41 * The naming convention for the pad modes is MX35_PAD_<padname>__<padmode>
42 * If <padname> or <padmode> refers to a GPIO, it is named
47 typedef struct deprecated_pad_desc
{
48 unsigned mux_ctrl_ofs
:12; /* IOMUXC_SW_MUX_CTL_PAD offset */
50 unsigned pad_ctrl_ofs
:12; /* IOMUXC_SW_PAD_CTRL offset */
51 #define NO_PAD_CTRL (1 << 16)
53 unsigned select_input_ofs
:12; /* IOMUXC_SELECT_INPUT offset */
54 unsigned select_input
:3;
57 static inline unsigned int MUX_CTRL_OFS(iomux_v3_cfg_t
*pad
)
59 return pad
->mux_ctrl_ofs
;
62 static inline unsigned int MUX_MODE(iomux_v3_cfg_t
*pad
)
67 static inline unsigned int MUX_SELECT_INPUT_OFS(iomux_v3_cfg_t
*pad
)
69 return pad
->select_input_ofs
;
72 static inline unsigned int MUX_SELECT_INPUT(iomux_v3_cfg_t
*pad
)
74 return pad
->select_input
;
77 static inline unsigned int MUX_PAD_CTRL_OFS(iomux_v3_cfg_t
*pad
)
79 return pad
->pad_ctrl_ofs
;
82 static inline unsigned int MUX_PAD_CTRL(iomux_v3_cfg_t
*pad
)
87 #define IOMUX_PAD(_pad_ctrl_ofs, _mux_ctrl_ofs, _mux_mode, _select_input_ofs, \
88 _select_input, _pad_ctrl) \
90 .mux_ctrl_ofs = _mux_ctrl_ofs, \
91 .mux_mode = _mux_mode, \
92 .pad_ctrl_ofs = _pad_ctrl_ofs, \
93 .pad_ctrl = _pad_ctrl, \
94 .select_input_ofs = _select_input_ofs, \
95 .select_input = _select_input, \
99 * Use to set PAD control
102 #define PAD_CTL_DVS (1 << 13)
103 #define PAD_CTL_HYS (1 << 8)
105 #define PAD_CTL_PKE (1 << 7)
106 #define PAD_CTL_PUE (1 << 6)
107 #define PAD_CTL_PUS_100K_DOWN (0 << 4)
108 #define PAD_CTL_PUS_47K_UP (1 << 4)
109 #define PAD_CTL_PUS_100K_UP (2 << 4)
110 #define PAD_CTL_PUS_22K_UP (3 << 4)
112 #define PAD_CTL_ODE (1 << 3)
114 #define PAD_CTL_DSE_LOW (0 << 1)
115 #define PAD_CTL_DSE_MED (1 << 1)
116 #define PAD_CTL_DSE_HIGH (2 << 1)
117 #define PAD_CTL_DSE_MAX (3 << 1)
119 #define PAD_CTL_SRE_FAST (1 << 0)
120 #define PAD_CTL_SRE_SLOW (0 << 0)
123 #define MX51_NUM_GPIO_PORT 4
125 #define GPIO_PIN_MASK 0x1f
127 #define GPIO_PORT_SHIFT 5
128 #define GPIO_PORT_MASK (0x7 << GPIO_PORT_SHIFT)
130 #define GPIO_PORTA (0 << GPIO_PORT_SHIFT)
131 #define GPIO_PORTB (1 << GPIO_PORT_SHIFT)
132 #define GPIO_PORTC (2 << GPIO_PORT_SHIFT)
133 #define GPIO_PORTD (3 << GPIO_PORT_SHIFT)
134 #define GPIO_PORTE (4 << GPIO_PORT_SHIFT)
135 #define GPIO_PORTF (5 << GPIO_PORT_SHIFT)
138 * setups a single pad in the iomuxer
140 int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t
*pad
);
143 * setups mutliple pads
144 * convenient way to call the above function with tables
146 int mxc_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t
*pad_list
, unsigned count
);
149 * Initialise the iomux controller
151 void mxc_iomux_v3_init(void __iomem
*iomux_v3_base
);
153 #endif /* __MACH_IOMUX_V3_H__*/
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