| viresh kumar | 70f4c0b | 2010-04-01 12:31:29 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/plat-spear/include/plat/padmux.h |
| 3 | * |
| 4 | * SPEAr platform specific gpio pads muxing file |
| 5 | * |
| 6 | * Copyright (C) 2009 ST Microelectronics |
| 7 | * Viresh Kumar<viresh.kumar@st.com> |
| 8 | * |
| 9 | * This file is licensed under the terms of the GNU General Public |
| 10 | * License version 2. This program is licensed "as is" without any |
| 11 | * warranty of any kind, whether express or implied. |
| 12 | */ |
| 13 | |
| 14 | #ifndef __PLAT_PADMUX_H |
| 15 | #define __PLAT_PADMUX_H |
| 16 | |
| 17 | #include <linux/types.h> |
| 18 | |
| 19 | /* |
| 20 | * struct pmx_reg: configuration structure for mode reg and mux reg |
| 21 | * |
| 22 | * offset: offset of mode reg |
| 23 | * mask: mask of mode reg |
| 24 | */ |
| 25 | struct pmx_reg { |
| 26 | u32 offset; |
| 27 | u32 mask; |
| 28 | }; |
| 29 | |
| 30 | /* |
| 31 | * struct pmx_dev_mode: configuration structure every group of modes of a device |
| 32 | * |
| 33 | * ids: all modes for this configuration |
| 34 | * mask: mask for supported mode |
| 35 | */ |
| 36 | struct pmx_dev_mode { |
| 37 | u32 ids; |
| 38 | u32 mask; |
| 39 | }; |
| 40 | |
| 41 | /* |
| 42 | * struct pmx_mode: mode definition structure |
| 43 | * |
| 44 | * name: mode name |
| 45 | * mask: mode mask |
| 46 | */ |
| 47 | struct pmx_mode { |
| 48 | char *name; |
| 49 | u32 id; |
| 50 | u32 mask; |
| 51 | }; |
| 52 | |
| 53 | /* |
| 54 | * struct pmx_dev: device definition structure |
| 55 | * |
| 56 | * name: device name |
| 57 | * modes: device configuration array for different modes supported |
| 58 | * mode_count: size of modes array |
| 59 | * is_active: is peripheral active/enabled |
| 60 | * enb_on_reset: if 1, mask bits to be cleared in reg otherwise to be set in reg |
| 61 | */ |
| 62 | struct pmx_dev { |
| 63 | char *name; |
| 64 | struct pmx_dev_mode *modes; |
| 65 | u8 mode_count; |
| 66 | bool is_active; |
| 67 | bool enb_on_reset; |
| 68 | }; |
| 69 | |
| 70 | /* |
| 71 | * struct pmx_driver: driver definition structure |
| 72 | * |
| 73 | * mode: mode to be set |
| 74 | * devs: array of pointer to pmx devices |
| 75 | * devs_count: ARRAY_SIZE of devs |
| 76 | * base: base address of soc config registers |
| 77 | * mode_reg: structure of mode config register |
| 78 | * mux_reg: structure of device mux config register |
| 79 | */ |
| 80 | struct pmx_driver { |
| 81 | struct pmx_mode *mode; |
| 82 | struct pmx_dev **devs; |
| 83 | u8 devs_count; |
| 84 | u32 *base; |
| 85 | struct pmx_reg mode_reg; |
| 86 | struct pmx_reg mux_reg; |
| 87 | }; |
| 88 | |
| 89 | /* pmx functions */ |
| 90 | int pmx_register(struct pmx_driver *driver); |
| 91 | |
| 92 | #endif /* __PLAT_PADMUX_H */ |