| /* 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->flags = IORESOURCE_IO | IORESOURCE_FIXED; |
| resource->base = EC_LENOVO_PMH7_BASE; |
| resource->size = 16; |
| resource->align = 5; |
| resource->gran = 5; |
| |
| 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 = { |
| CHIP_NAME("Lenovo Power Management Hardware Hub 7") |
| .enable_dev = enable_dev, |
| }; |