diff options
| author | Patrice Chotard <patrice.chotard@st.com> | 2018-10-24 14:10:16 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-11-16 16:51:55 -0500 |
| commit | 37b596ac5c5f7ac405602af2577405b1f7d38cce (patch) | |
| tree | d3c8d2d796e3c3c301462e08b3cbb1a79cbe5294 /include/dm | |
| parent | f6abd5389ceab5fce185126c2364a324465fafbe (diff) | |
dm: uclass: Add uclass_foreach_dev_probe
Add uclass_foreach_dev_probe() which iterates through
devices of a given uclass. Devices are probed if necessary
and are ready to use.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/dm')
| -rw-r--r-- | include/dm/uclass.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/dm/uclass.h b/include/dm/uclass.h index 93f761c96e..1bc62d523e 100644 --- a/include/dm/uclass.h +++ b/include/dm/uclass.h @@ -393,4 +393,20 @@ int uclass_resolve_seq(struct udevice *dev); #define uclass_foreach_dev_safe(pos, next, uc) \ list_for_each_entry_safe(pos, next, &uc->dev_head, uclass_node) +/** + * uclass_foreach_dev_probe() - Helper function to iteration through devices + * of given uclass + * + * This creates a for() loop which works through the available devices in + * a uclass in order from start to end. Devices are probed if necessary, + * and ready for use. + * + * @id: Uclass ID + * @dev: struct udevice * to hold the current device. Set to NULL when there + * are no more devices. + */ +#define uclass_foreach_dev_probe(id, dev) \ + for (int _ret = uclass_first_device_err(id, &dev); !_ret && dev; \ + _ret = uclass_next_device_err(&dev)) + #endif |