f0d21ff3da
This patch aligns tegra124 to the new SoC header include scheme. Also alphabetized headers in affected files since we touch them anyway. BUG=None TEST=Tested with whole series. Compiled Nyan, Nyan_Big and Nyan_Blaze. Change-Id: Ia82ab86b2af903690cc6c9d310f7bdda3425ea7c Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 4d23774e071ec22781991ff20fbf63802f620c88 Original-Change-Id: Ia126cff8590117788d1872e50608c257d2659c1f Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/224504 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9326 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2014 Google, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#include <device/i2c.h>
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#include <soc/gpio.h>
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#include <soc/pinmux.h>
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#include "i2c.h"
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static struct {
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int pinmux_func;
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gpio_t sda;
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gpio_t scl;
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} pins[] = {
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[0]{.pinmux_func = PINMUX_GEN1_I2C_SCL_FUNC_I2C1,
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.sda = GPIO(C5), .scl = GPIO(C4)},
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[1]{.pinmux_func = PINMUX_GEN2_I2C_SCL_FUNC_I2C2,
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.sda = GPIO(T6), .scl = GPIO(T5)},
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[2]{.pinmux_func = PINMUX_CAM_I2C_SCL_FUNC_I2C3,
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.sda = GPIO(BB2), .scl = GPIO(BB1)},
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[3]{.pinmux_func = PINMUX_DDC_SCL_FUNC_I2C4,
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.sda = GPIO(V5), .scl = GPIO(V4)},
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[4]{.pinmux_func = PINMUX_PWR_I2C_SCL_FUNC_I2CPMU,
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.sda = GPIO(Z7), .scl = GPIO(Z6)},
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};
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static void tegra_set_sda(unsigned bus, int high)
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{
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if (high)
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gpio_input_pullup(pins[bus].sda);
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else
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gpio_output(pins[bus].sda, 0);
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}
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static void tegra_set_scl(unsigned bus, int high)
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{
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if (high)
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gpio_input_pullup(pins[bus].scl);
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else
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gpio_output(pins[bus].scl, 0);
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}
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static int tegra_get_sda(unsigned bus)
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{
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return gpio_get_in_value(pins[bus].sda);
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}
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static int tegra_get_scl(unsigned bus)
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{
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return gpio_get_in_value(pins[bus].scl);
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}
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static struct software_i2c_ops tegra_ops = {
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.set_sda = tegra_set_sda,
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.set_scl = tegra_set_scl,
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.get_sda = tegra_get_sda,
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.get_scl = tegra_get_scl,
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};
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void tegra_software_i2c_init(unsigned bus)
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{
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software_i2c[bus] = &tegra_ops;
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/* Initialize bus to idle state. */
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tegra_set_sda(bus, 1);
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tegra_set_scl(bus, 1);
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}
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void tegra_software_i2c_disable(unsigned bus)
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{
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software_i2c[bus] = NULL;
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/* Return pins to I2C controller. */
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pinmux_set_config(pins[bus].sda >> GPIO_PINMUX_SHIFT,
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pins[bus].pinmux_func | PINMUX_INPUT_ENABLE);
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pinmux_set_config(pins[bus].scl >> GPIO_PINMUX_SHIFT,
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pins[bus].pinmux_func | PINMUX_INPUT_ENABLE);
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gpio_set_mode(pins[bus].sda, GPIO_MODE_SPIO);
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gpio_set_mode(pins[bus].scl, GPIO_MODE_SPIO);
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}
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