b94a27506e
Right now dw_i2c_get_soc_cfg() is expecting the SoC to implement that callback for obtaining the bus config. However, we're currently forcing another parameter of struct device so one can do the lookup. This works for Intel-based systems since the struct device was needed to program the BAR, etc. However, from an API standpoint, it just complicates matters by needing to obtain the struct device. The SoC already has knowlege of its own devices so it can get the config itself by bus number. Therefore, remove that contraint from the API. BUG=b:70232394 Change-Id: Id8558f5deedda0963a46a532a7bf984e168fb270 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/23420 Reviewed-by: Subrata Banik <subrata.banik@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2016 Google Inc.
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* Copyright (C) 2017 Intel Corporation.
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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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#include <console/console.h>
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#include <device/device.h>
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#include <device/pci_def.h>
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#include <drivers/i2c/designware/dw_i2c.h>
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#include <soc/iomap.h>
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#include <soc/pci_devs.h>
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#include "chip.h"
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const struct dw_i2c_bus_config *dw_i2c_get_soc_cfg(unsigned int bus)
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{
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const struct soc_intel_cannonlake_config *config;
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const struct device *dev = dev_find_slot(0, SA_DEVFN_ROOT);
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if (!dev || !dev->chip_info) {
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printk(BIOS_ERR, "%s: Could not find SoC devicetree config!\n",
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__func__);
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return NULL;
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}
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config = dev->chip_info;
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return &config->i2c[bus];
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}
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uintptr_t dw_i2c_get_soc_early_base(unsigned int bus)
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{
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return EARLY_I2C_BASE(bus);
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}
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int dw_i2c_soc_devfn_to_bus(unsigned int devfn)
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{
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switch (devfn) {
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case PCH_DEVFN_I2C0:
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return 0;
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case PCH_DEVFN_I2C1:
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return 1;
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case PCH_DEVFN_I2C2:
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return 2;
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case PCH_DEVFN_I2C3:
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return 3;
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case PCH_DEVFN_I2C4:
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return 4;
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case PCH_DEVFN_I2C5:
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return 5;
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}
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return -1;
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}
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int dw_i2c_soc_bus_to_devfn(unsigned int bus)
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{
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switch (bus) {
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case 0:
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return PCH_DEVFN_I2C0;
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case 1:
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return PCH_DEVFN_I2C1;
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case 2:
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return PCH_DEVFN_I2C2;
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case 3:
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return PCH_DEVFN_I2C3;
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case 4:
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return PCH_DEVFN_I2C4;
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case 5:
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return PCH_DEVFN_I2C5;
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}
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return -1;
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}
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