summaryrefslogtreecommitdiff
path: root/include/pch.h
diff options
context:
space:
mode:
authorBin Meng <bmeng.cn@gmail.com>2016-02-01 01:40:43 -0800
committerBin Meng <bmeng.cn@gmail.com>2016-02-05 12:47:21 +0800
commit384980c687ca38c028bdf40f59a38b3f52105884 (patch)
treee9f70955a43852369d64b01eafb91c09e6b4e848 /include/pch.h
parent3e389d8ba666c5c2ad42021c2087630c1e412954 (diff)
downloadu-boot-imx-384980c687ca38c028bdf40f59a38b3f52105884.zip
u-boot-imx-384980c687ca38c028bdf40f59a38b3f52105884.tar.gz
u-boot-imx-384980c687ca38c028bdf40f59a38b3f52105884.tar.bz2
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 <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/pch.h')
-rw-r--r--include/pch.h18
1 files changed, 18 insertions, 0 deletions
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