ae6a4b6d3c
In the intel/common/block * Move I2C common code from intel/common to intel/common/block. * Split the code into common, early init and post mem init stages and put it in lpss_i2c.c, i2c_early.c and i2c.c respectively. * Declare functions for getting platform specific i2c bus config and mapping bus to devfn and vice versa, that have to be implemented by SoC. In skylake/apollolake * Stop using code from soc/intel/common/lpss_i2c.c. * Remove early i2c initialization code from bootblock. * Refactor i2c.c file to implement SoC specific methods required by the I2C IP block. Change-Id: I4d91a04c22e181e3a995112cce6d5f0324130b81 Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com> Reviewed-on: https://review.coreboot.org/19468 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
64 lines
1.7 KiB
C
64 lines
1.7 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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*
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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 <intelblocks/lpss_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 lpss_i2c_bus_config *i2c_get_soc_cfg(unsigned int bus,
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const struct device *dev)
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{
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const struct soc_intel_apollolake_config *config;
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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 i2c_get_soc_early_base(unsigned int bus)
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{
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return PRERAM_I2C_BASE_ADDRESS(bus);
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}
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/* Convert I2C bus number to PCI device and function */
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int i2c_soc_bus_to_devfn(unsigned int bus)
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{
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if (bus >= 0 && bus <= 3)
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return PCI_DEVFN(PCH_DEV_SLOT_SIO1, bus);
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else if (bus >= 4 && bus <= 7)
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return PCI_DEVFN(PCH_DEV_SLOT_SIO2, (bus - 4));
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else
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return -1;
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}
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/* Convert PCI device and function to I2C bus number */
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int i2c_soc_devfn_to_bus(unsigned int devfn)
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{
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if (PCI_SLOT(devfn) == PCH_DEV_SLOT_SIO1)
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return PCI_FUNC(devfn);
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else if (PCI_SLOT(devfn) == PCH_DEV_SLOT_SIO2)
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return PCI_FUNC(devfn) + 4;
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else
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return -1;
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}
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