| Christian Ruppert | 072eb69 | 2013-04-12 08:40:59 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * Abilis Systems TB10x platform initialisation |
| 3 | * |
| 4 | * Copyright (C) Abilis Systems 2012 |
| 5 | * |
| 6 | * Author: Christian Ruppert <christian.ruppert@abilis.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/of_platform.h> |
| 25 | #include <linux/clk-provider.h> |
| 26 | #include <linux/pinctrl/consumer.h> |
| 27 | |
| 28 | #include <asm/mach_desc.h> |
| 29 | |
| 30 | |
| 31 | static void __init tb10x_platform_init(void) |
| 32 | { |
| 33 | of_clk_init(NULL); |
| 34 | of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); |
| 35 | } |
| 36 | |
| 37 | static void __init tb10x_platform_late_init(void) |
| 38 | { |
| 39 | struct device_node *dn; |
| 40 | |
| 41 | /* |
| 42 | * Pinctrl documentation recommends setting up the iomux here for |
| 43 | * all modules which don't require control over the pins themselves. |
| 44 | * Modules which need this kind of assistance are compatible with |
| 45 | * "abilis,simple-pinctrl", i.e. we can easily iterate over them. |
| 46 | * TODO: Does this recommended method work cleanly with pins required |
| 47 | * by modules? |
| 48 | */ |
| 49 | for_each_compatible_node(dn, NULL, "abilis,simple-pinctrl") { |
| 50 | struct platform_device *pd = of_find_device_by_node(dn); |
| 51 | struct pinctrl *pctl; |
| 52 | |
| 53 | pctl = pinctrl_get_select(&pd->dev, "abilis,simple-default"); |
| 54 | if (IS_ERR(pctl)) { |
| 55 | int ret = PTR_ERR(pctl); |
| 56 | dev_err(&pd->dev, "Could not set up pinctrl: %d\n", |
| 57 | ret); |
| 58 | } |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | static const char *tb10x_compat[] __initdata = { |
| 63 | "abilis,arc-tb10x", |
| 64 | NULL, |
| 65 | }; |
| 66 | |
| 67 | MACHINE_START(TB10x, "tb10x") |
| 68 | .dt_compat = tb10x_compat, |
| 69 | .init_machine = tb10x_platform_init, |
| 70 | .init_late = tb10x_platform_late_init, |
| 71 | MACHINE_END |