diff options
Diffstat (limited to 'src/drivers/lenovo')
| -rw-r--r-- | src/drivers/lenovo/hybrid_graphics/romstage.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/src/drivers/lenovo/hybrid_graphics/romstage.c b/src/drivers/lenovo/hybrid_graphics/romstage.c index 9009c5841a..8814916872 100644 --- a/src/drivers/lenovo/hybrid_graphics/romstage.c +++ b/src/drivers/lenovo/hybrid_graphics/romstage.c @@ -76,20 +76,31 @@ void early_hybrid_graphics(bool *enable_igd, bool *enable_peg) } /* - * Need to do power handling here as we know there's a dGPU to - * turn off. Support GPIO and Thinker1. + * Need to do power handling here as we know there's a dGPU. + * Support GPIO and Thinker1. */ - if (!*enable_peg) { - if (config->has_dgpu_power_gpio) { + 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) { + } else if (config->has_thinker1) { + const size_t power_en = !!(pmh7_register_read(0x50) & 0x08); + if (*enable_peg && !power_en) { + pmh7_register_clear_bit(0x50, 7); // DGPU_RST + pmh7_register_set_bit(0x50, 3); // DGPU_PWR + mdelay(10); + pmh7_register_set_bit(0x50, 7); // DGPU_RST + mdelay(50); + } else if (!*enable_peg && power_en) { pmh7_register_clear_bit(0x50, 7); // DGPU_RST udelay(100); pmh7_register_clear_bit(0x50, 3); // DGPU_PWR - } else { - printk(BIOS_ERR, "Hybrid graphics:" - " FIXME: dGPU power not disabled !\n"); } + } else { + printk(BIOS_ERR, "Hybrid graphics:" + " FIXME: dGPU power handling not implemented\n"); } } |