diff options
Diffstat (limited to 'src/drivers/apple/hybrid_graphics/hybrid_graphics.c')
| -rw-r--r-- | src/drivers/apple/hybrid_graphics/hybrid_graphics.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/drivers/apple/hybrid_graphics/hybrid_graphics.c b/src/drivers/apple/hybrid_graphics/hybrid_graphics.c new file mode 100644 index 0000000000..7ec29fc345 --- /dev/null +++ b/src/drivers/apple/hybrid_graphics/hybrid_graphics.c @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <types.h> +#include <option.h> +#include <device/device.h> + +#include <southbridge/intel/common/gpio.h> +#include <console/console.h> +#include "chip.h" +#include "gmux.h" + +static void enable_dev(struct device *dev) +{ + const struct drivers_lenovo_hybrid_graphics_config *config; + enum hybrid_graphics_req mode; + u8 ver_major, ver_minor, ver_release; + u32 version, max_brightness, brightness; + + /* Don't confuse anyone else and disable the fake device */ + dev->enabled = 0; + + config = dev->chip_info; + if (!config) { + printk(BIOS_INFO, "Hybrid graphics: Not installed\n"); + return; + } + + version = gmux_index_read32(GMUX_PORT_VERSION_MAJOR); + ver_major = (version >> 24) & 0xff; + ver_minor = (version >> 16) & 0xff; + ver_release = (version >> 8) & 0xff; + max_brightness = gmux_index_read32(GMUX_PORT_MAX_BRIGHTNESS); + brightness = gmux_index_read32(GMUX_PORT_BRIGHTNESS) + & GMUX_BRIGHTNESS_MASK; + + printk(BIOS_INFO, "gmux version: %d.%d.%d\n", + ver_major, ver_minor, ver_release); + printk(BIOS_INFO, "gmux max brightness: %d\n", max_brightness); + printk(BIOS_INFO, "gmux brightness: %d\n", brightness); + + mode = HYBRID_GRAPHICS_DEFAULT_GPU; + get_option(&mode, "hybrid_graphics_mode"); + + gmux_switch(dev, mode == HYBRID_GRAPHICS_DISCRETE); +} + +struct chip_operations drivers_apple_hybrid_graphics_ops = { + CHIP_NAME("Apple hybrid graphics driver") + .enable_dev = enable_dev +}; |