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x86: pch9: Implement get_io_base op 

IO_BASE is only seen on PCH9 device, implement the get_io_base op.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
utp
Bin Meng 2016-02-01 01:40:46 -08:00
parent 79d4eb627c
commit 4f106bc8be
1 changed files with 17 additions and 0 deletions
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17
drivers/pch/pch9.c
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@ -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[] = {