Commit 4f106bc8 authored by Bin Meng's avatar Bin Meng

x86: pch9: Implement get_io_base op

IO_BASE is only seen on PCH9 device, implement the get_io_base op.
Signed-off-by: default avatarBin Meng <bmeng.cn@gmail.com>
Reviewed-by: default avatarSimon Glass <sjg@chromium.org>
Tested-by: default avatarSimon Glass <sjg@chromium.org>
parent 79d4eb62
......@@ -9,6 +9,7 @@
#include <pch.h>
#define GPIO_BASE 0x48
#define IO_BASE 0x4c
#define SBASE_ADDR 0x54
static int pch9_get_spi_base(struct udevice *dev, ulong *sbasep)
......@@ -52,9 +53,25 @@ static int pch9_get_gpio_base(struct udevice *dev, u32 *gbasep)
return 0;
}
static int pch9_get_io_base(struct udevice *dev, u32 *iobasep)
{
u32 base;
dm_pci_read_config32(dev, IO_BASE, &base);
if (base == 0x00000000 || base == 0xffffffff) {
debug("%s: unexpected BASE value\n", __func__);
return -ENODEV;
}
*iobasep = base & 1 ? base & ~3 : base & ~15;
return 0;
}
static const struct pch_ops pch9_ops = {
.get_spi_base = pch9_get_spi_base,
.get_gpio_base = pch9_get_gpio_base,
.get_io_base = pch9_get_io_base,
};
static const struct udevice_id pch9_ids[] = {
......
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