| Shawn Guo | 1772311 | 2012-04-28 13:00:50 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 Freescale Semiconductor, Inc. |
| 3 | * |
| 4 | * The code contained herein is licensed under the GNU General Public |
| 5 | * License. You may obtain a copy of the GNU General Public License |
| 6 | * Version 2 or later at the following locations: |
| 7 | * |
| 8 | * http://www.opensource.org/licenses/gpl-license.html |
| 9 | * http://www.gnu.org/copyleft/gpl.html |
| 10 | */ |
| 11 | |
| 12 | #ifndef __PINCTRL_MXS_H |
| 13 | #define __PINCTRL_MXS_H |
| 14 | |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <linux/pinctrl/pinctrl.h> |
| 17 | |
| 18 | #define SET 0x4 |
| 19 | #define CLR 0x8 |
| 20 | #define TOG 0xc |
| 21 | |
| 22 | #define MXS_PINCTRL_PIN(pin) PINCTRL_PIN(pin, #pin) |
| 23 | #define PINID(bank, pin) ((bank) * 32 + (pin)) |
| 24 | |
| 25 | /* |
| 26 | * pinmux-id bit field definitions |
| 27 | * |
| 28 | * bank: 15..12 (4) |
| 29 | * pin: 11..4 (8) |
| 30 | * muxsel: 3..0 (4) |
| 31 | */ |
| 32 | #define MUXID_TO_PINID(m) PINID((m) >> 12 & 0xf, (m) >> 4 & 0xff) |
| 33 | #define MUXID_TO_MUXSEL(m) ((m) & 0xf) |
| 34 | |
| 35 | #define PINID_TO_BANK(p) ((p) >> 5) |
| 36 | #define PINID_TO_PIN(p) ((p) % 32) |
| 37 | |
| 38 | /* |
| 39 | * pin config bit field definitions |
| 40 | * |
| 41 | * pull-up: 6..5 (2) |
| 42 | * voltage: 4..3 (2) |
| 43 | * mA: 2..0 (3) |
| 44 | * |
| 45 | * MSB of each field is presence bit for the config. |
| 46 | */ |
| 47 | #define PULL_PRESENT (1 << 6) |
| 48 | #define PULL_SHIFT 5 |
| 49 | #define VOL_PRESENT (1 << 4) |
| 50 | #define VOL_SHIFT 3 |
| 51 | #define MA_PRESENT (1 << 2) |
| 52 | #define MA_SHIFT 0 |
| 53 | #define CONFIG_TO_PULL(c) ((c) >> PULL_SHIFT & 0x1) |
| 54 | #define CONFIG_TO_VOL(c) ((c) >> VOL_SHIFT & 0x1) |
| 55 | #define CONFIG_TO_MA(c) ((c) >> MA_SHIFT & 0x3) |
| 56 | |
| 57 | struct mxs_function { |
| 58 | const char *name; |
| 59 | const char **groups; |
| 60 | unsigned ngroups; |
| 61 | }; |
| 62 | |
| 63 | struct mxs_group { |
| 64 | const char *name; |
| 65 | unsigned int *pins; |
| 66 | unsigned npins; |
| 67 | u8 *muxsel; |
| 68 | u8 config; |
| 69 | }; |
| 70 | |
| 71 | struct mxs_regs { |
| 72 | u16 muxsel; |
| 73 | u16 drive; |
| 74 | u16 pull; |
| 75 | }; |
| 76 | |
| 77 | struct mxs_pinctrl_soc_data { |
| 78 | const struct mxs_regs *regs; |
| 79 | const struct pinctrl_pin_desc *pins; |
| 80 | unsigned npins; |
| 81 | struct mxs_function *functions; |
| 82 | unsigned nfunctions; |
| 83 | struct mxs_group *groups; |
| 84 | unsigned ngroups; |
| 85 | }; |
| 86 | |
| 87 | int mxs_pinctrl_probe(struct platform_device *pdev, |
| 88 | struct mxs_pinctrl_soc_data *soc); |
| 89 | int mxs_pinctrl_remove(struct platform_device *pdev); |
| 90 | |
| 91 | #endif /* __PINCTRL_MXS_H */ |