| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <types.h> |
| #include <option.h> |
| #include <device/device.h> |
| |
| #include <southbridge/intel/common/gpio.h> |
| #include <ec/lenovo/pmh7/pmh7.h> |
| #include <console/console.h> |
| |
| #include "hybrid_graphics.h" |
| #include "chip.h" |
| |
| /* |
| * Returns the hybrid graphics presence and user's card preferences. |
| */ |
| void early_hybrid_graphics(bool *enable_igd, bool *enable_peg) |
| { |
| const struct drivers_lenovo_hybrid_graphics_config *config; |
| const struct device *dev; |
| enum hybrid_graphics_req mode; |
| |
| /* TODO: Use generic device instead of dummy PNP device */ |
| dev = dev_find_slot_pnp(HYBRID_GRAPHICS_PORT, HYBRID_GRAPHICS_DEVICE); |
| |
| if (!dev || !dev->chip_info) { |
| printk(BIOS_ERR, "Hybrid graphics: ERROR\n"); |
| *enable_igd = true; |
| *enable_peg = false; |
| return; |
| } |
| |
| config = dev->chip_info; |
| if (get_gpio(config->detect_gpio) == DGPU_NOT_INSTALLED) { |
| printk(BIOS_DEBUG, "Hybrid graphics:" |
| " No discrete GPU present.\n"); |
| *enable_igd = true; |
| *enable_peg = false; |
| return; |
| } |
| |
| mode = get_uint_option("hybrid_graphics_mode", HYBRID_GRAPHICS_DEFAULT_GPU); |
| |
| if (mode == HYBRID_GRAPHICS_DISCRETE) { |
| printk(BIOS_DEBUG, "Hybrid graphics:" |
| " Disabling integrated GPU.\n"); |
| |
| *enable_igd = false; |
| *enable_peg = true; |
| } else if (mode == HYBRID_GRAPHICS_INTEGRATED) { |
| printk(BIOS_DEBUG, "Hybrid graphics:" |
| " Disabling discrete GPU.\n"); |
| |
| *enable_igd = true; |
| *enable_peg = false; |
| } else { |
| printk(BIOS_DEBUG, "Hybrid graphics:" |
| " Activating Switchable (both GPUs).\n"); |
| |
| *enable_igd = true; |
| *enable_peg = true; |
| } |
| |
| /* |
| * Need to do power handling here as we know there's a dGPU. |
| * Support GPIO and Thinker1. |
| */ |
| if (config->has_dgpu_power_gpio) { |
| if (*enable_peg) |
| set_gpio(config->dgpu_power_gpio, |
| !config->dgpu_power_off_lvl); |
| else |
| set_gpio(config->dgpu_power_gpio, |
| config->dgpu_power_off_lvl); |
| } else if (config->has_thinker1) { |
| bool power_en = pmh7_dgpu_power_state(); |
| if (*enable_peg != power_en) |
| pmh7_dgpu_power_enable(!power_en); |
| } else { |
| printk(BIOS_ERR, "Hybrid graphics:" |
| " FIXME: dGPU power handling not implemented\n"); |
| } |
| } |