/* SPDX-License-Identifier: GPL-2.0-only */ #include <arch/io.h> #include <console/console.h> #include <device/device.h> #include <device/pnp.h> #include <option.h> #include <delay.h> #include <types.h> #include "pmh7.h" #include "chip.h" void pmh7_backlight_enable(int onoff) { if (onoff) pmh7_register_set_bit(0x50, 5); else pmh7_register_clear_bit(0x50, 5); } void pmh7_dock_event_enable(int onoff) { if (onoff) pmh7_register_set_bit(0x60, 3); else pmh7_register_clear_bit(0x60, 3); } void pmh7_touchpad_enable(int onoff) { if (onoff) pmh7_register_clear_bit(0x51, 2); else pmh7_register_set_bit(0x51, 2); } void pmh7_trackpoint_enable(int onoff) { if (onoff) pmh7_register_clear_bit(0x51, 0); else pmh7_register_set_bit(0x51, 0); } void pmh7_ultrabay_power_enable(int onoff) { if (onoff) pmh7_register_clear_bit(0x62, 0); else pmh7_register_set_bit(0x62, 0); } void pmh7_dgpu_power_enable(int onoff) { if (onoff) { 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 { pmh7_register_clear_bit(0x50, 7); // DGPU_RST udelay(100); pmh7_register_clear_bit(0x50, 3); // DGPU_PWR } } bool pmh7_dgpu_power_state(void) { return (pmh7_register_read(0x50) & 0x08) == 8; } void pmh7_register_set_bit(int reg, int bit) { char val; val = pmh7_register_read(reg); pmh7_register_write(reg, val | (1 << bit)); } void pmh7_register_clear_bit(int reg, int bit) { char val; val = pmh7_register_read(reg); pmh7_register_write(reg, val & ~(1 << bit)); } char pmh7_register_read(int reg) { outb(reg & 0xff, EC_LENOVO_PMH7_ADDR_L); outb((reg & 0xff00) >> 8, EC_LENOVO_PMH7_ADDR_H); return inb(EC_LENOVO_PMH7_DATA); } void pmh7_register_write(int reg, int val) { outb(reg & 0xff, EC_LENOVO_PMH7_ADDR_L); outb((reg & 0xff00) >> 8, EC_LENOVO_PMH7_ADDR_H); outb(val, EC_LENOVO_PMH7_DATA); } static void enable_dev(struct device *dev) { const struct ec_lenovo_pmh7_config *conf = dev->chip_info; struct resource *resource; resource = new_resource(dev, EC_LENOVO_PMH7_INDEX); resource->base = EC_LENOVO_PMH7_BASE; resource->size = 16; resource->align = 5; resource->gran = 5; resource->flags = IORESOURCE_IO | IORESOURCE_FIXED | IORESOURCE_ASSIGNED; pmh7_backlight_enable(conf->backlight_enable); pmh7_dock_event_enable(conf->dock_event_enable); pmh7_touchpad_enable(get_uint_option("touchpad", 1)); pmh7_trackpoint_enable(get_uint_option("trackpoint", 1)); printk(BIOS_INFO, "PMH7: ID %02x Revision %02x\n", pmh7_register_read(EC_LENOVO_PMH7_REG_ID), pmh7_register_read(EC_LENOVO_PMH7_REG_REV)); } struct chip_operations ec_lenovo_pmh7_ops = { .name = "Lenovo Power Management Hardware Hub 7", .enable_dev = enable_dev, };