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 <s...@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
*
--
2.25.0.341.g760bfbb309-goog
