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| author | Bin Meng <bmeng.cn@gmail.com> | 2016-02-01 01:40:45 -0800 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2016-02-05 12:47:21 +0800 |
| commit | 79d4eb627cffbc3ab7cefdd623fa39fefaaedbe7 (patch) | |
| tree | 10b2756494ba0b3d3a0967f1ef82380689612e51 | |
| parent | ec2af6f82d4ee07fa19877e2bb2e5c80d8d6962b (diff) | |
| download | u-boot-imx-79d4eb627cffbc3ab7cefdd623fa39fefaaedbe7.zip u-boot-imx-79d4eb627cffbc3ab7cefdd623fa39fefaaedbe7.tar.gz u-boot-imx-79d4eb627cffbc3ab7cefdd623fa39fefaaedbe7.tar.bz2 | |
dm: pch: Add get_io_base op
On some newer chipset (eg: BayTrail), there is an IO base address
register on the PCH device which configures the base address of a
memory-mapped I/O controller.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | drivers/pch/pch-uclass.c | 11 | ||||
| -rw-r--r-- | include/pch.h | 18 |
2 files changed, 29 insertions, 0 deletions
diff --git a/drivers/pch/pch-uclass.c b/drivers/pch/pch-uclass.c index 48a3965..7216660 100644 --- a/drivers/pch/pch-uclass.c +++ b/drivers/pch/pch-uclass.c @@ -44,6 +44,17 @@ int pch_get_gpio_base(struct udevice *dev, u32 *gbasep) return ops->get_gpio_base(dev, gbasep); } +int pch_get_io_base(struct udevice *dev, u32 *iobasep) +{ + struct pch_ops *ops = pch_get_ops(dev); + + *iobasep = 0; + if (!ops->get_io_base) + return -ENOSYS; + + return ops->get_io_base(dev, iobasep); +} + static int pch_uclass_post_bind(struct udevice *bus) { /* diff --git a/include/pch.h b/include/pch.h index b378865..222e908 100644 --- a/include/pch.h +++ b/include/pch.h @@ -41,6 +41,15 @@ struct pch_ops { * @return 0 if OK, -ve on error (e.g. there is no GPIO base) */ int (*get_gpio_base)(struct udevice *dev, u32 *gbasep); + + /** + * get_io_base() - get the address of IO base + * + * @dev: PCH device to check + * @iobasep: Returns address of IO base if available, else 0 + * @return 0 if OK, -ve on error (e.g. there is no IO base) + */ + int (*get_io_base)(struct udevice *dev, u32 *iobasep); }; #define pch_get_ops(dev) ((struct pch_ops *)(dev)->driver->ops) @@ -73,4 +82,13 @@ int pch_set_spi_protect(struct udevice *dev, bool protect); */ int pch_get_gpio_base(struct udevice *dev, u32 *gbasep); +/** + * pch_get_io_base() - get the address of IO base + * + * @dev: PCH device to check + * @iobasep: Returns address of IO base if available, else 0 + * @return 0 if OK, -ve on error (e.g. there is no IO base) + */ +int pch_get_io_base(struct udevice *dev, u32 *iobasep); + #endif |