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/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/console.h>
#include <device/i2c_simple.h>
#include <gpio.h>
#include <soc/platform_descriptors.h>
#include <types.h>
/* TODO: Update for birman */
static const fsp_dxio_descriptor birman_dxio_descriptors[] = {
{
.engine_type = PCIE_ENGINE,
.port_present = true,
.start_logical_lane = 0,
.end_logical_lane = 0,
.device_number = 2,
.function_number = 1,
.link_speed_capability = GEN3,
.turn_off_unused_lanes = true,
.link_aspm = 2,
.link_hotplug = HOTPLUG_ENHANCED,
.clk_req = CLK_REQ3,
},
{
.engine_type = PCIE_ENGINE,
.port_present = true,
.start_logical_lane = 1,
.end_logical_lane = 1,
.device_number = 2,
.function_number = 2,
.link_speed_capability = GEN3,
.turn_off_unused_lanes = true,
.link_aspm = 2,
.link_hotplug = HOTPLUG_ENHANCED,
.clk_req = CLK_REQ1,
},
{
.engine_type = PCIE_ENGINE,
.port_present = true,
.start_logical_lane = 2,
.end_logical_lane = 3,
.device_number = 2,
.function_number = 3,
.link_speed_capability = GEN3,
.turn_off_unused_lanes = true,
.link_aspm = 2,
.link_hotplug = HOTPLUG_ENHANCED,
.gpio_group_id = GPIO_27,
.clk_req = CLK_REQ0,
},
};
static fsp_ddi_descriptor birman_ddi_descriptors[] = {
{ /* DDI0 - eDP */
.connector_type = DDI_EDP,
.aux_index = DDI_AUX1,
.hdp_index = DDI_HDP1
},
{ /* DDI1 - HDMI/DP */
.connector_type = DDI_HDMI,
.aux_index = DDI_AUX2,
.hdp_index = DDI_HDP2
},
{ /* DDI2 - DP (type C) */
.connector_type = DDI_DP_W_TYPEC,
.aux_index = DDI_AUX3,
.hdp_index = DDI_HDP3,
},
{ /* DDI3 - DP (type C) */
.connector_type = DDI_DP_W_TYPEC,
.aux_index = DDI_AUX4,
.hdp_index = DDI_HDP4,
},
{ /* DDI4 - DP (type C) */
.connector_type = DDI_DP_W_TYPEC,
.aux_index = DDI_AUX5,
.hdp_index = DDI_HDP5,
}
};
static uint8_t get_ddi1_type(void)
{
const uint8_t eeprom_i2c_bus = 2;
const uint8_t eeprom_i2c_address = 0x55;
const uint16_t eeprom_connector_type_offset = 2;
uint8_t eeprom_connector_type_data[2];
uint16_t connector_type;
if (i2c_2ba_read_bytes(eeprom_i2c_bus, eeprom_i2c_address,
eeprom_connector_type_offset, eeprom_connector_type_data,
sizeof(eeprom_connector_type_data))) {
printk(BIOS_NOTICE,
"Display connector type couldn't be determined. Disabling DDI1.\n");
return DDI_UNUSED_TYPE;
}
connector_type = eeprom_connector_type_data[1] | eeprom_connector_type_data[0] << 8;
switch (connector_type) {
case 0x0c:
printk(BIOS_DEBUG, "Configuring DDI1 as HDMI.\n");
return DDI_HDMI;
case 0x13:
printk(BIOS_DEBUG, "Configuring DDI1 as DP.\n");
return DDI_DP;
case 0x14:
printk(BIOS_DEBUG, "Configuring DDI1 as eDP.\n");
return DDI_EDP;
case 0x17:
printk(BIOS_DEBUG, "Configuring DDI1 as USB-C.\n");
return DDI_DP_W_TYPEC;
default:
printk(BIOS_WARNING, "Unexpected display connector type %x. Disabling DDI1.\n",
connector_type);
return DDI_UNUSED_TYPE;
}
}
void mainboard_get_dxio_ddi_descriptors(
const fsp_dxio_descriptor **dxio_descs, size_t *dxio_num,
const fsp_ddi_descriptor **ddi_descs, size_t *ddi_num)
{
birman_ddi_descriptors[1].connector_type = get_ddi1_type();
*dxio_descs = birman_dxio_descriptors;
*dxio_num = ARRAY_SIZE(birman_dxio_descriptors);
*ddi_descs = birman_ddi_descriptors;
*ddi_num = ARRAY_SIZE(birman_ddi_descriptors);
}
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