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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <baseboard/variants.h>
#include <console/console.h>
#include <device/device.h>
#include <drivers/i2c/generic/chip.h>
#include <soc/pci_devs.h>
#include <ec/google/chromeec/ec.h>
#include <ec/google/chromeec/i2c_tunnel/chip.h>
#include <string.h>
#define EC_PNP_ID 0x0c09
#define DALBOZ_DB_USBC 0x0
#define DALBOZ_DB_HDMI 0x1
/* Look for an EC device of type PNP with id 0x0c09 */
static bool match_ec_dev(DEVTREE_CONST struct device *dev)
{
if (dev->path.type != DEVICE_PATH_PNP)
return false;
if (dev->path.pnp.port != EC_PNP_ID)
return false;
return true;
}
extern struct chip_operations drivers_i2c_generic_ops;
/* Look for an I2C device with HID "10EC5682" */
static bool match_audio_dev(DEVTREE_CONST struct device *dev)
{
struct drivers_i2c_generic_config *cfg;
if (dev->chip_ops != &drivers_i2c_generic_ops)
return false;
cfg = dev->chip_info;
return !strcmp(cfg->hid, "10EC5682");
}
extern struct chip_operations ec_google_chromeec_i2c_tunnel_ops;
/* Look for Cros EC tunnel device which has audio device under it. */
static bool match_audio_tunnel(DEVTREE_CONST struct device *dev)
{
const struct device *audio_dev;
if (dev->chip_ops != &ec_google_chromeec_i2c_tunnel_ops)
return false;
audio_dev = dev_find_matching_device_on_bus(dev->link_list, match_audio_dev);
if (!audio_dev)
return false;
return true;
}
/*
* This is to allow support for audio on older board versions (< 2). [b/153458561]. This
* should be removed once these boards are phased out.
*/
static void update_audio_configuration(void)
{
uint32_t board_version;
const struct device *lpc_controller;
const struct device *ec_dev;
const struct device *i2c_tunnel_dev;
struct ec_google_chromeec_i2c_tunnel_config *cfg;
/* If CBI board version cannot be read, assume this is an older revision of hardware. */
if (google_chromeec_cbi_get_board_version(&board_version) != 0)
board_version = 1;
if (board_version >= 2)
return;
lpc_controller = SOC_LPC_DEV;
if (lpc_controller == NULL) {
printk(BIOS_ERR, "%s: LPC controller device not found!\n", __func__);
return;
}
ec_dev = dev_find_matching_device_on_bus(lpc_controller->link_list, match_ec_dev);
if (ec_dev == NULL) {
printk(BIOS_ERR, "%s: EC device not found!\n", __func__);
return;
}
i2c_tunnel_dev = dev_find_matching_device_on_bus(ec_dev->link_list, match_audio_tunnel);
if (i2c_tunnel_dev == NULL) {
printk(BIOS_ERR, "%s: I2C tunnel device not found!\n", __func__);
return;
}
cfg = i2c_tunnel_dev->chip_info;
if (cfg == NULL) {
printk(BIOS_ERR, "%s: I2C tunnel device config not found!\n", __func__);
return;
}
cfg->remote_bus = 5;
}
void variant_devtree_update(void)
{
uint32_t board_version;
struct soc_amd_picasso_config *cfg;
cfg = config_of_soc();
/*
* If CBI board version cannot be read, assume this is an older revision
* of hardware.
*/
if (google_chromeec_cbi_get_board_version(&board_version) != 0)
board_version = 1;
if (variant_has_emmc() || boot_is_factory_unprovisioned()) {
if (board_version <= 2) {
/*
* rev0 and rev1 boards have issues with HS400
*
* There is a tuning fix with ES which shows promise
* for some boards, and a HW fix with stitching vias.
* There were also concerns that these boards did not
* have good margins for certain skus.
*
* But these original boards have none of these fixes.
* So we keep the speed low here, with the intent that
* other variants implement these corrections.
*/
cfg->emmc_config.timing = SD_EMMC_EMMC_HS200;
}
} else {
cfg->emmc_config.timing = SD_EMMC_DISABLE;
}
update_audio_configuration();
}
/* FIXME: Comments seem to suggest these are not entirely correct. */
static const fsp_ddi_descriptor non_hdmi_ddi_descriptors[] = {
{
// DDI0, DP0, eDP
.connector_type = EDP,
.aux_index = AUX1,
.hdp_index = HDP1
},
{
// DDI1, DP1, DB OPT2 USB-C1 / DB OPT3 MST hub
.connector_type = DP,
.aux_index = AUX2,
.hdp_index = HDP2
},
{
// DP2 pins not connected on Dali
// DDI2, DP3, USB-C0
.connector_type = DP,
.aux_index = AUX4,
.hdp_index = HDP4,
}
};
static const fsp_ddi_descriptor hdmi_ddi_descriptors[] = {
{ // DDI0, DP0, eDP
.connector_type = EDP,
.aux_index = AUX1,
.hdp_index = HDP1
},
{ // DDI1, DP1, DB OPT2 USB-C1 / DB OPT3 MST hub
.connector_type = HDMI,
.aux_index = AUX2,
.hdp_index = HDP2
},
// DP2 pins not connected on Dali
{ // DDI2, DP3, USB-C0
.connector_type = DP,
.aux_index = AUX4,
.hdp_index = HDP4,
}
};
void variant_get_dxio_ddi_descriptors(const fsp_dxio_descriptor **dxio_descs,
size_t *dxio_num,
const fsp_ddi_descriptor **ddi_descs,
size_t *ddi_num)
{
uint32_t daughterboard_id = variant_get_daughterboard_id();
*dxio_descs = baseboard_get_dxio_descriptors(dxio_num);
/*
* Get daughterboard id from FW_CONFIG and configure descriptors accordingly.
* For unprovisioned boards use DB_HDMI as default.
*/
if ((daughterboard_id == DALBOZ_DB_HDMI) || boot_is_factory_unprovisioned()) {
*ddi_descs = &hdmi_ddi_descriptors[0];
*ddi_num = ARRAY_SIZE(hdmi_ddi_descriptors);
} else {
*ddi_descs = &non_hdmi_ddi_descriptors[0];
*ddi_num = ARRAY_SIZE(non_hdmi_ddi_descriptors);
}
}
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