projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| faa4fd2a BC |
1 | /* |
| 2 | * Copyright (C) 2010 Bluecherry, LLC www.bluecherrydvr.com | |
| 3 | * Copyright (C) 2010 Ben Collins <bcollins@bluecherry.net> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License as published by | |
| 7 | * the Free Software Foundation; either version 2 of the License, or | |
| 8 | * (at your option) any later version. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | * GNU General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU General Public License | |
| 16 | * along with this program; if not, write to the Free Software | |
| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
| 18 | */ | |
| 19 | ||
| 20 | #include <linux/kernel.h> | |
| 21 | #include <linux/fs.h> | |
| 22 | #include <asm/uaccess.h> | |
| 23 | ||
| 24 | #include "solo6010.h" | |
| 25 | ||
| 26 | static void solo_gpio_mode(struct solo6010_dev *solo_dev, | |
| 27 | unsigned int port_mask, unsigned int mode) | |
| 28 | { | |
| 29 | int port; | |
| 30 | unsigned int ret; | |
| 31 | ||
| 32 | ret = solo_reg_read(solo_dev, SOLO_GPIO_CONFIG_0); | |
| 33 | ||
| 34 | /* To set gpio */ | |
| 35 | for (port = 0; port < 16; port++) { | |
| 36 | if (!((1 << port) & port_mask)) | |
| 37 | continue; | |
| 38 | ||
| 39 | ret &= (~(3 << (port << 1))); | |
| 40 | ret |= ((mode & 3) << (port << 1)); | |
| 41 | } | |
| 42 | ||
| 43 | solo_reg_write(solo_dev, SOLO_GPIO_CONFIG_0, ret); | |
| 44 | ||
| 45 | /* To set extended gpio - sensor */ | |
| 46 | ret = solo_reg_read(solo_dev, SOLO_GPIO_CONFIG_1); | |
| 47 | ||
| 48 | for (port = 0; port < 16; port++) { | |
| 49 | if (!((1 << (port + 16)) & port_mask)) | |
| 50 | continue; | |
| 51 | ||
| 52 | if (!mode) | |
| 53 | ret &= ~(1 << port); | |
| 54 | else | |
| 55 | ret |= 1 << port; | |
| 56 | } | |
| 57 | ||
| 58 | solo_reg_write(solo_dev, SOLO_GPIO_CONFIG_1, ret); | |
| 59 | } | |
| 60 | ||
| 61 | static void solo_gpio_set(struct solo6010_dev *solo_dev, unsigned int value) | |
| 62 | { | |
| 63 | solo_reg_write(solo_dev, SOLO_GPIO_DATA_OUT, | |
| 64 | solo_reg_read(solo_dev, SOLO_GPIO_DATA_OUT) | value); | |
| 65 | } | |
| 66 | ||
| 67 | static void solo_gpio_clear(struct solo6010_dev *solo_dev, unsigned int value) | |
| 68 | { | |
| 69 | solo_reg_write(solo_dev, SOLO_GPIO_DATA_OUT, | |
| 70 | solo_reg_read(solo_dev, SOLO_GPIO_DATA_OUT) & ~value); | |
| 71 | } | |
| 72 | ||
| 73 | static void solo_gpio_config(struct solo6010_dev *solo_dev) | |
| 74 | { | |
| 75 | /* Video reset */ | |
| 76 | solo_gpio_mode(solo_dev, 0x30, 1); | |
| 77 | solo_gpio_clear(solo_dev, 0x30); | |
| 78 | udelay(100); | |
| 79 | solo_gpio_set(solo_dev, 0x30); | |
| 80 | udelay(100); | |
| 81 | ||
| 82 | /* Warning: Don't touch the next line unless you're sure of what | |
| 83 | * you're doing: first four gpio [0-3] are used for video. */ | |
| 84 | solo_gpio_mode(solo_dev, 0x0f, 2); | |
| 85 | ||
| 86 | /* We use bit 8-15 of SOLO_GPIO_CONFIG_0 for relay purposes */ | |
| 87 | solo_gpio_mode(solo_dev, 0xff00, 1); | |
| 88 | ||
| 89 | /* Initially set relay status to 0 */ | |
| 90 | solo_gpio_clear(solo_dev, 0xff00); | |
| 91 | } | |
| 92 | ||
| 93 | int solo_gpio_init(struct solo6010_dev *solo_dev) | |
| 94 | { | |
| f62de9be BC |
95 | solo_gpio_config(solo_dev); |
| 96 | return 0; | |
| faa4fd2a BC |
97 | } |
| 98 | ||
| 99 | void solo_gpio_exit(struct solo6010_dev *solo_dev) | |
| 100 | { | |
| 101 | solo_gpio_clear(solo_dev, 0x30); | |
| 102 | solo_gpio_config(solo_dev); | |
| 103 | } |