2 * arch/arm/mach-tegra/board-harmony-pcie.c
4 * Copyright (C) 2010 CompuLab, Ltd.
5 * Mike Rapoport <mike@compulab.co.il>
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.
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.
18 #include <linux/kernel.h>
19 #include <linux/gpio.h>
20 #include <linux/err.h>
21 #include <linux/regulator/consumer.h>
23 #include <asm/mach-types.h>
25 #include <mach/pinmux.h>
27 #include "board-harmony.h"
29 #ifdef CONFIG_TEGRA_PCI
31 static int __init harmony_pcie_init(void)
33 struct regulator *regulator = NULL;
36 if (!machine_is_harmony())
39 err = gpio_request(TEGRA_GPIO_EN_VDD_1V05_GPIO, "EN_VDD_1V05");
43 gpio_direction_output(TEGRA_GPIO_EN_VDD_1V05_GPIO, 1);
45 regulator = regulator_get(NULL, "pex_clk");
46 if (IS_ERR_OR_NULL(regulator))
49 regulator_enable(regulator);
51 tegra_pinmux_set_tristate(TEGRA_PINGROUP_GPV, TEGRA_TRI_NORMAL);
52 tegra_pinmux_set_tristate(TEGRA_PINGROUP_SLXA, TEGRA_TRI_NORMAL);
53 tegra_pinmux_set_tristate(TEGRA_PINGROUP_SLXK, TEGRA_TRI_NORMAL);
55 err = tegra_pcie_init(true, true);
62 tegra_pinmux_set_tristate(TEGRA_PINGROUP_GPV, TEGRA_TRI_TRISTATE);
63 tegra_pinmux_set_tristate(TEGRA_PINGROUP_SLXA, TEGRA_TRI_TRISTATE);
64 tegra_pinmux_set_tristate(TEGRA_PINGROUP_SLXK, TEGRA_TRI_TRISTATE);
66 regulator_disable(regulator);
67 regulator_put(regulator);
69 gpio_free(TEGRA_GPIO_EN_VDD_1V05_GPIO);
74 /* PCI should be initialized after I2C, mfd and regulators */
75 subsys_initcall_sync(harmony_pcie_init);