diff options
Diffstat (limited to 'src/soc/intel/tigerlake/i2c.c')
-rw-r--r-- | src/soc/intel/tigerlake/i2c.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/soc/intel/tigerlake/i2c.c b/src/soc/intel/tigerlake/i2c.c new file mode 100644 index 0000000000..3d00372d59 --- /dev/null +++ b/src/soc/intel/tigerlake/i2c.c @@ -0,0 +1,62 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2019 Intel Corp. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +/* + * This file is created based on Intel Tiger Lake Processor PCH Datasheet + * Document number: 575857 + * Chapter number: 13 + */ + +#include <device/device.h> +#include <drivers/i2c/designware/dw_i2c.h> +#include <soc/pci_devs.h> + +int dw_i2c_soc_devfn_to_bus(unsigned int devfn) +{ + switch (devfn) { + case PCH_DEVFN_I2C0: + return 0; + case PCH_DEVFN_I2C1: + return 1; + case PCH_DEVFN_I2C2: + return 2; + case PCH_DEVFN_I2C3: + return 3; + case PCH_DEVFN_I2C4: + return 4; + case PCH_DEVFN_I2C5: + return 5; + } + return -1; +} + +int dw_i2c_soc_bus_to_devfn(unsigned int bus) +{ + switch (bus) { + case 0: + return PCH_DEVFN_I2C0; + case 1: + return PCH_DEVFN_I2C1; + case 2: + return PCH_DEVFN_I2C2; + case 3: + return PCH_DEVFN_I2C3; + case 4: + return PCH_DEVFN_I2C4; + case 5: + return PCH_DEVFN_I2C5; + } + return -1; +} |