From 384980c687ca38c028bdf40f59a38b3f52105884 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Mon, 1 Feb 2016 01:40:43 -0800 Subject: dm: pch: Add get_gpio_base op x86 GPIO registers are accessed via I/O port whose base address is configured in a PCI configuration register on the PCH device. Add an op get_gpio_base to get the GPIO base address from PCH. Signed-off-by: Bin Meng Reviewed-by: Simon Glass Tested-by: Simon Glass --- include/pch.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/pch.h') diff --git a/include/pch.h b/include/pch.h index c04cfa3..b378865 100644 --- a/include/pch.h +++ b/include/pch.h @@ -32,6 +32,15 @@ struct pch_ops { * @return 0 on success, -ENOSYS if not implemented */ int (*set_spi_protect)(struct udevice *dev, bool protect); + + /** + * get_gpio_base() - get the address of GPIO base + * + * @dev: PCH device to check + * @gbasep: Returns address of GPIO base if available, else 0 + * @return 0 if OK, -ve on error (e.g. there is no GPIO base) + */ + int (*get_gpio_base)(struct udevice *dev, u32 *gbasep); }; #define pch_get_ops(dev) ((struct pch_ops *)(dev)->driver->ops) @@ -55,4 +64,13 @@ int pch_get_spi_base(struct udevice *dev, ulong *sbasep); */ int pch_set_spi_protect(struct udevice *dev, bool protect); +/** + * pch_get_gpio_base() - get the address of GPIO base + * + * @dev: PCH device to check + * @gbasep: Returns address of GPIO base if available, else 0 + * @return 0 if OK, -ve on error (e.g. there is no GPIO base) + */ +int pch_get_gpio_base(struct udevice *dev, u32 *gbasep); + #endif -- cgit v1.1