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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <device/device.h>
#include <device/pnp.h>
#include <superio/conf_mode.h>
#include <stdint.h>
#include <pc80/keyboard.h>
#include "w83627uhg.h"
/*
* Set the UART clock source.
*
* Possible UART clock source speeds are:
*
* 0 = 1.8462 MHz (default)
* 1 = 2 MHz
* 2 = 24 MHz
* 3 = 14.769 MHz
*
* The faster clocks allow for BAUD rates up to 2mbits.
*
* Warning: The kernel will need to be adjusted since it assumes
* a 1.8462 MHz clock.
*/
static void set_uart_clock_source(struct device *dev, u8 uart_clock)
{
u8 value;
pnp_enter_conf_mode(dev);
pnp_set_logical_device(dev);
value = pnp_read_config(dev, PNP_IDX_MSC0);
value &= ~0x03;
value |= (uart_clock & 0x03);
pnp_write_config(dev, PNP_IDX_MSC0, value);
pnp_exit_conf_mode(dev);
}
static void w83627uhg_init(struct device *dev)
{
if (!dev->enabled)
return;
switch (dev->path.pnp.device) {
case W83627UHG_SP1:
set_uart_clock_source(dev, 0);
break;
case W83627UHG_SP2:
set_uart_clock_source(dev, 0);
break;
case W83627UHG_SP3:
set_uart_clock_source(dev, 0);
break;
case W83627UHG_SP4:
set_uart_clock_source(dev, 0);
break;
case W83627UHG_SP5:
set_uart_clock_source(dev, 0);
break;
case W83627UHG_SP6:
set_uart_clock_source(dev, 0);
break;
case W83627UHG_KBC:
pc_keyboard_init(NO_AUX_DEVICE);
break;
}
}
static struct device_operations ops = {
.read_resources = pnp_read_resources,
.set_resources = pnp_set_resources,
.enable_resources = pnp_enable_resources,
.enable = pnp_enable,
.init = w83627uhg_init,
.ops_pnp_mode = &pnp_conf_mode_8787_aa,
};
static struct pnp_info pnp_dev_info[] = {
{ NULL, W83627UHG_FDC, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, 0x07f8, },
{ NULL, W83627UHG_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, 0x07f8, },
{ NULL, W83627UHG_SP1, PNP_IO0 | PNP_IRQ0, 0x07f8, },
{ NULL, W83627UHG_SP2, PNP_IO0 | PNP_IRQ0, 0x07f8, },
{ NULL, W83627UHG_KBC, PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1,
0x07ff, 0x07ff, },
{ NULL, W83627UHG_SP3, PNP_IO0 | PNP_IRQ0, 0x07f8, },
{ NULL, W83627UHG_GPIO3_4, },
{ NULL, W83627UHG_WDTO_PLED_GPIO5_6, },
{ NULL, W83627UHG_GPIO1_2, },
{ NULL, W83627UHG_ACPI, PNP_IRQ0, },
{ NULL, W83627UHG_HWM, PNP_IO0 | PNP_IRQ0, 0x0ff8, },
{ NULL, W83627UHG_PECI_SST, },
{ NULL, W83627UHG_SP4, PNP_IO0 | PNP_IRQ0, 0x07f8, },
{ NULL, W83627UHG_SP5, PNP_IO0 | PNP_IRQ0, 0x07f8, },
{ NULL, W83627UHG_SP6, PNP_IO0 | PNP_IRQ0, 0x07f8, },
};
static void enable_dev(struct device *dev)
{
pnp_enable_devices(dev, &ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
}
struct chip_operations superio_winbond_w83627uhg_ops = {
.name = "Winbond W83627UHG Super I/O",
.enable_dev = enable_dev,
};
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