diff options
Diffstat (limited to 'src/soc/intel/alderlake/i2c.c')
-rw-r--r-- | src/soc/intel/alderlake/i2c.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/i2c.c b/src/soc/intel/alderlake/i2c.c new file mode 100644 index 0000000000..ef34e2ef1c --- /dev/null +++ b/src/soc/intel/alderlake/i2c.c @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* + * This file is created based on Intel Alder Lake Processor PCH Datasheet + * Document number: 621483 + * 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; +} |