The P2SB bus needs to be hidden in some cases so that it does not get auto-configured by Linux. Add a method for this.
Signed-off-by: Simon Glass sjg@chromium.org ---
drivers/misc/p2sb-uclass.c | 10 ++++++++++ include/p2sb.h | 25 ++++++++++++++++++++++++- 2 files changed, 34 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/p2sb-uclass.c b/drivers/misc/p2sb-uclass.c index 1d00a73f2f..aa6d7aeef7 100644 --- a/drivers/misc/p2sb-uclass.c +++ b/drivers/misc/p2sb-uclass.c @@ -16,6 +16,16 @@
#define PCR_COMMON_IOSF_1_0 1
+int p2sb_set_hide(struct udevice *dev, bool hide) +{ + struct p2sb_ops *ops = p2sb_get_ops(dev); + + if (!ops->set_hide) + return -ENOSYS; + + return ops->set_hide(dev, hide); +} + void *pcr_reg_address(struct udevice *dev, uint offset) { struct p2sb_child_platdata *pplat = dev_get_parent_platdata(dev); diff --git a/include/p2sb.h b/include/p2sb.h index 74eb08b7ff..93e1155dca 100644 --- a/include/p2sb.h +++ b/include/p2sb.h @@ -31,13 +31,36 @@ struct p2sb_uc_priv { };
/** - * struct p2sb_ops - Operations for the P2SB (none at present) + * struct p2sb_ops - Operations for the P2SB */ struct p2sb_ops { + /** + * set_hide() - Set/clear the 'hide' bit on the p2sb + * + * This device can be hidden from the PCI bus if needed. This method + * can be called before the p2sb is probed. + * + * @dev: P2SB device + * @hide: true to hide the device, false to show it + * @return 0 if OK, -ve on error + */ + int (*set_hide)(struct udevice *dev, bool hide); };
#define p2sb_get_ops(dev) ((struct p2sb_ops *)(dev)->driver->ops)
+/** + * p2sb_set_hide() - Set/clear the 'hide' bit on the p2sb + * + * This device can be hidden from the PCI bus if needed. This method + * can be called before the p2sb is probed. + * + * @dev: P2SB device + * @hide: true to hide the device, false to show it + * @return 0 if OK, -ve on error + */ +int p2sb_set_hide(struct udevice *dev, bool hide); + /** * pcr_read32/16/8() - Read from a PCR device *