6996e0858c
This patch modifies the pinmux code to be useable for multiple tegra variants. Some tegra20 specific constants will be replaced by variables which will be initialized to the appropriate value at runtime. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Colin Cross <ccross@android.com> Signed-off-by: Olof Johansson <olof@lixom.net>
79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
/*
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* arch/arm/mach-tegra/board-harmony-pcie.c
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*
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* Copyright (C) 2010 CompuLab, Ltd.
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* Mike Rapoport <mike@compulab.co.il>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/gpio.h>
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#include <linux/err.h>
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#include <linux/regulator/consumer.h>
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#include <asm/mach-types.h>
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#include <mach/pinmux.h>
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#include <mach/pinmux-tegra20.h>
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#include "board.h"
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#include "board-harmony.h"
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#ifdef CONFIG_TEGRA_PCI
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static int __init harmony_pcie_init(void)
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{
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struct regulator *regulator = NULL;
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int err;
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if (!machine_is_harmony())
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return 0;
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err = gpio_request(TEGRA_GPIO_EN_VDD_1V05_GPIO, "EN_VDD_1V05");
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if (err)
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return err;
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gpio_direction_output(TEGRA_GPIO_EN_VDD_1V05_GPIO, 1);
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regulator = regulator_get(NULL, "pex_clk");
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if (IS_ERR_OR_NULL(regulator))
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goto err_reg;
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regulator_enable(regulator);
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tegra_pinmux_set_tristate(TEGRA_PINGROUP_GPV, TEGRA_TRI_NORMAL);
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tegra_pinmux_set_tristate(TEGRA_PINGROUP_SLXA, TEGRA_TRI_NORMAL);
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tegra_pinmux_set_tristate(TEGRA_PINGROUP_SLXK, TEGRA_TRI_NORMAL);
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err = tegra_pcie_init(true, true);
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if (err)
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goto err_pcie;
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return 0;
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err_pcie:
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tegra_pinmux_set_tristate(TEGRA_PINGROUP_GPV, TEGRA_TRI_TRISTATE);
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tegra_pinmux_set_tristate(TEGRA_PINGROUP_SLXA, TEGRA_TRI_TRISTATE);
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tegra_pinmux_set_tristate(TEGRA_PINGROUP_SLXK, TEGRA_TRI_TRISTATE);
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regulator_disable(regulator);
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regulator_put(regulator);
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err_reg:
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gpio_free(TEGRA_GPIO_EN_VDD_1V05_GPIO);
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return err;
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}
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/* PCI should be initialized after I2C, mfd and regulators */
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subsys_initcall_sync(harmony_pcie_init);
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#endif
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