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| author | Bin Meng <bmeng.cn@gmail.com> | 2016-02-01 01:40:46 -0800 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2016-02-05 12:47:21 +0800 |
| commit | 4f106bc8becc194057cd306f9188b1393b7df558 (patch) | |
| tree | 92f90ccd44ac55968a8fef9ff75a522c7c0fe18b /drivers/pch | |
| parent | 79d4eb627cffbc3ab7cefdd623fa39fefaaedbe7 (diff) | |
| download | blackbird-obmc-uboot-4f106bc8becc194057cd306f9188b1393b7df558.tar.gz blackbird-obmc-uboot-4f106bc8becc194057cd306f9188b1393b7df558.zip | |
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>
Diffstat (limited to 'drivers/pch')
| -rw-r--r-- | drivers/pch/pch9.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/pch/pch9.c b/drivers/pch/pch9.c index 2a212ceff1..910eb61f48 100644 --- a/drivers/pch/pch9.c +++ b/drivers/pch/pch9.c @@ -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[] = { |
