| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/i2c.h> |
| #include <console/console.h> |
| #include <soc/i2c.h> |
| #include <soc/southbridge.h> |
| #include "chip.h" |
| |
| /* Table to switch SCL pins to outputs to initially reset the I2C peripherals */ |
| static const struct soc_i2c_scl_pin i2c_scl_pins[] = { |
| I2C_RESET_SCL_PIN(I2C0_SCL_PIN, GPIO_I2C0_SCL), |
| I2C_RESET_SCL_PIN(I2C1_SCL_PIN, GPIO_I2C1_SCL), |
| I2C_RESET_SCL_PIN(I2C2_SCL_PIN, GPIO_I2C2_SCL), |
| I2C_RESET_SCL_PIN(I2C3_SCL_PIN, GPIO_I2C3_SCL), |
| }; |
| |
| #if ENV_X86 |
| static const struct soc_i2c_ctrlr_info i2c_ctrlr[I2C_CTRLR_COUNT] = { |
| { I2C_MASTER_MODE, APU_I2C0_BASE, "I2C0" }, |
| { I2C_MASTER_MODE, APU_I2C1_BASE, "I2C1" }, |
| { I2C_MASTER_MODE, APU_I2C2_BASE, "I2C2" }, |
| { I2C_MASTER_MODE, APU_I2C3_BASE, "I2C3" } |
| }; |
| #else |
| static struct soc_i2c_ctrlr_info i2c_ctrlr[I2C_CTRLR_COUNT] = { |
| { I2C_MASTER_MODE, 0, "" }, |
| { I2C_MASTER_MODE, 0, "" }, |
| { I2C_MASTER_MODE, 0, "" }, |
| { I2C_MASTER_MODE, 0, "" } |
| }; |
| |
| void i2c_set_bar(unsigned int bus, uintptr_t bar) |
| { |
| if (bus >= ARRAY_SIZE(i2c_ctrlr)) { |
| printk(BIOS_ERR, "i2c index out of bounds: %u.", bus); |
| return; |
| } |
| |
| i2c_ctrlr[bus].bar = bar; |
| } |
| #endif |
| |
| void reset_i2c_peripherals(void) |
| { |
| const struct soc_amd_phoenix_config *cfg = config_of_soc(); |
| struct soc_i2c_peripheral_reset_info reset_info; |
| |
| reset_info.i2c_scl_reset_mask = cfg->i2c_scl_reset & GPIO_I2C_MASK; |
| reset_info.i2c_scl = i2c_scl_pins; |
| reset_info.num_pins = ARRAY_SIZE(i2c_scl_pins); |
| sb_reset_i2c_peripherals(&reset_info); |
| } |
| |
| void soc_i2c_misc_init(unsigned int bus, const struct dw_i2c_bus_config *cfg) |
| { |
| const struct soc_amd_phoenix_config *config = config_of_soc(); |
| |
| if (bus >= ARRAY_SIZE(config->i2c_pad)) |
| return; |
| |
| fch_i23c_pad_init(bus, cfg->speed, &config->i2c_pad[bus]); |
| } |
| |
| const struct soc_i2c_ctrlr_info *soc_get_i2c_ctrlr_info(size_t *num_ctrlrs) |
| { |
| *num_ctrlrs = ARRAY_SIZE(i2c_ctrlr); |
| return i2c_ctrlr; |
| } |
| |
| const struct dw_i2c_bus_config *soc_get_i2c_bus_config(size_t *num_buses) |
| { |
| const struct soc_amd_phoenix_config *config = config_of_soc(); |
| |
| *num_buses = ARRAY_SIZE(config->i2c); |
| return config->i2c; |
| } |