linux/drivers/reset/core.c, branch v4.6

reset: Move DT cell size check to the core

2016-01-25T09:58:44Z

The core currently doesn't check that the DT cell size matches what the driver declares, which means that every xlate function needs to duplicate that check. Make sure that of_reset_control_get checks for this to avoid duplication and errors. Signed-off-by: Maxime Ripard Signed-off-by: Philipp Zabel

reset: remove unnecessary local variable initialization from of_reset_control_get_by_index

2016-01-25T09:58:44Z

There is no need to initialize rstc, as it is unconditionally assigned the return value of a kzalloc call before use. Signed-off-by: Philipp Zabel

reset: remove unused device pointer from struct reset_control

2015-11-18T14:13:20Z

Commit 0c5b2b915a58 ("reset: Mark function as static and remove unused function in core.c") removed the only user of the device pointer in struct reset_control. As it is now unused, remove it. Signed-off-by: Philipp Zabel

reset: use ENOTSUPP instead of ENOSYS

2015-11-16T08:23:47Z

ENOSYS is reserved to report invalid syscalls to userspace. Consistently return ENOTSUPP to indicate that the driver doesn't support the functionality or the reset framework is not enabled at all. Signed-off-by: Philipp Zabel

reset: Fix of_reset_control_get() for consistent return values

2015-11-16T08:23:47Z

When of_reset_control_get() is called without connection ID it returns -ENOENT when the 'resets' property doesn't exists or is an empty entry. However when a connection ID is given it returns -EINVAL when the 'resets' property doesn't exists or the requested name can't be found. This is because the error code returned by of_property_match_string() is just passed down as an index to of_parse_phandle_with_args(), which then returns -EINVAL. To get a consistent return value with both code paths we must return -ENOENT when of_property_match_string() fails. Signed-off-by: Alban Bedel Signed-off-by: Philipp Zabel

reset: add of_reset_control_get_by_index()

2015-11-16T08:23:47Z

Add of_reset_control_get_by_index() to allow the drivers to get reset device without knowing its name. Signed-off-by: Vince Hsu [jonathanh@nvidia.com: Updated stub function to return -ENOTSUPP instead of -ENOSYS which should only be used for system calls.] Signed-off-by: Jon Hunter Signed-off-by: Philipp Zabel

reset: add reset_control_status helper function

2014-10-20T08:11:29Z

There are cases where a system will want to read a reset status bit before doing any other toggling. Add a reset_control_status helper function to the reset controller API. Signed-off-by: Dinh Nguyen Signed-off-by: Philipp Zabel

reset: Add of_reset_control_get

2014-02-03T09:19:40Z

In some cases, you might need to deassert from reset an hardware block that doesn't associated to a struct device (CPUs, timers, etc.). Add a small helper to retrieve the reset controller from the device tree without the need to pass a struct device. Signed-off-by: Maxime Ripard Signed-off-by: Philipp Zabel

reset: Mark function as static and remove unused function in core.c

2014-02-03T09:19:40Z

Mark function of_reset_simple_xlate() as static in core.c because it is not used outside this file. Also, remove functions devm_reset_control_put() and devm_reset_control_match() because they are unused. This eliminates the following warnings in core.c: drivers/reset/core.c:46:5: warning: no previous prototype for ‘of_reset_simple_xlate’ [-Wmissing-prototypes] drivers/reset/core.c:262:6: warning: no previous prototype for ‘devm_reset_control_put’ [-Wmissing-prototypes] Signed-off-by: Rashika Kheria Reviewed-by: Josh Triplett Signed-off-by: Philipp Zabel

reset: allow drivers to request probe deferral

2014-02-03T09:19:39Z

If the requested reset controller is not yet available, have reset_control_get and device_reset return -EPROBE_DEFER so the driver can decide to request probe deferral. Signed-off-by: Philipp Zabel Acked-by: Shawn Guo Reviewed-by: Stephen Warren