projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| f2a44393 MR |
1 | /* |
| 2 | * arch/arm/mach-tegra/board-harmony-pcie.c | |
| 3 | * | |
| 4 | * Copyright (C) 2010 CompuLab, Ltd. | |
| 5 | * Mike Rapoport <mike@compulab.co.il> | |
| 6 | * | |
| 7 | * This software is licensed under the terms of the GNU General Public | |
| 8 | * License version 2, as published by the Free Software Foundation, and | |
| 9 | * may be copied, distributed, and modified under those terms. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | */ | |
| 17 | ||
| 18 | #include <linux/kernel.h> | |
| 19 | #include <linux/gpio.h> | |
| 20 | #include <linux/err.h> | |
| 3cc404de | 21 | #include <linux/of_gpio.h> |
| f2a44393 MR |
22 | #include <linux/regulator/consumer.h> |
| 23 | ||
| 24 | #include <asm/mach-types.h> | |
| 25 | ||
| f2a44393 MR |
26 | #include "board.h" |
| 27 | ||
| 28 | #ifdef CONFIG_TEGRA_PCI | |
| 29 | ||
| a12c0efc | 30 | int __init harmony_pcie_init(void) |
| f2a44393 | 31 | { |
| 3cc404de LD |
32 | struct device_node *np; |
| 33 | int en_vdd_1v05; | |
| ce005cf4 | 34 | struct regulator *regulator = NULL; |
| f2a44393 MR |
35 | int err; |
| 36 | ||
| 3cc404de LD |
37 | np = of_find_node_by_path("/regulators/regulator@3"); |
| 38 | if (!np) { | |
| 39 | pr_err("%s: of_find_node_by_path failed\n", __func__); | |
| 40 | return -ENODEV; | |
| 41 | } | |
| 42 | ||
| 43 | en_vdd_1v05 = of_get_named_gpio(np, "gpio", 0); | |
| 44 | if (en_vdd_1v05 < 0) { | |
| 45 | pr_err("%s: of_get_named_gpio failed: %d\n", __func__, | |
| 46 | en_vdd_1v05); | |
| 47 | return en_vdd_1v05; | |
| 48 | } | |
| 49 | ||
| 50 | err = gpio_request(en_vdd_1v05, "EN_VDD_1V05"); | |
| 51 | if (err) { | |
| 52 | pr_err("%s: gpio_request failed: %d\n", __func__, err); | |
| ce005cf4 | 53 | return err; |
| 3cc404de | 54 | } |
| ce005cf4 | 55 | |
| 3cc404de | 56 | gpio_direction_output(en_vdd_1v05, 1); |
| ce005cf4 | 57 | |
| 3cc404de LD |
58 | regulator = regulator_get(NULL, "vdd_ldo0,vddio_pex_clk"); |
| 59 | if (IS_ERR_OR_NULL(regulator)) { | |
| 60 | pr_err("%s: regulator_get failed: %d\n", __func__, | |
| 61 | (int)PTR_ERR(regulator)); | |
| ce005cf4 | 62 | goto err_reg; |
| 3cc404de | 63 | } |
| ce005cf4 MR |
64 | |
| 65 | regulator_enable(regulator); | |
| 66 | ||
| f2a44393 | 67 | err = tegra_pcie_init(true, true); |
| 3cc404de LD |
68 | if (err) { |
| 69 | pr_err("%s: tegra_pcie_init failed: %d\n", __func__, err); | |
| f2a44393 | 70 | goto err_pcie; |
| 3cc404de | 71 | } |
| f2a44393 MR |
72 | |
| 73 | return 0; | |
| 74 | ||
| 75 | err_pcie: | |
| ce005cf4 MR |
76 | regulator_disable(regulator); |
| 77 | regulator_put(regulator); | |
| 78 | err_reg: | |
| 3cc404de | 79 | gpio_free(en_vdd_1v05); |
| ce005cf4 | 80 | |
| f2a44393 MR |
81 | return err; |
| 82 | } | |
| 83 | ||
| f2a44393 | 84 | #endif |