| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| /* Pre-RAM driver for the SMSC KBC1100 Super I/O chip */ |
| |
| #include <arch/io.h> |
| #include <device/pnp_ops.h> |
| #include <device/pnp.h> |
| #include <stdint.h> |
| |
| #include "kbc1100.h" |
| |
| static void pnp_enter_conf_state(pnp_devfn_t dev) |
| { |
| u16 port = dev >> 8; |
| outb(0x55, port); |
| } |
| |
| static void pnp_exit_conf_state(pnp_devfn_t dev) |
| { |
| u16 port = dev >> 8; |
| outb(0xaa, port); |
| } |
| |
| void kbc1100_early_serial(pnp_devfn_t dev, u16 iobase) |
| { |
| pnp_enter_conf_state(dev); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| pnp_set_iobase(dev, PNP_IDX_IO0, iobase); |
| pnp_set_enable(dev, 1); |
| pnp_exit_conf_state(dev); |
| } |
| |
| void kbc1100_early_init(u16 port) |
| { |
| pnp_devfn_t dev; |
| dev = PNP_DEV(port, KBC1100_KBC); |
| pnp_enter_conf_state(dev); |
| |
| /* Serial IRQ enabled */ |
| outb(0x25, port); |
| outb(0x04, port + 1); |
| |
| /* Enable keyboard */ |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| pnp_set_iobase(dev, PNP_IDX_IO0, 0x60); |
| pnp_set_iobase(dev, PNP_IDX_IO1, 0x64); |
| pnp_set_irq(dev, PNP_IDX_IRQ0, 1); /* IRQ 1 */ |
| pnp_set_irq(dev, PNP_IDX_IRQ1, 12); /* IRQ 12 */ |
| pnp_set_enable(dev, 1); |
| |
| /* Enable EC Channel 0 */ |
| dev = PNP_DEV(port, KBC1100_EC0); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 1); |
| |
| pnp_exit_conf_state(dev); |
| |
| /* disable the 1s timer */ |
| outb(0xE7, 0x64); |
| } |