…leanup

Replace manual destroy_workqueue() calls in error and remove paths with a
devm_add_action_or_reset() helper. Ensure the workqueue is properly
cleaned up with the device lifecycle, and simplify error handling in probe
by removing now-unnecessary labels and cleanup steps.

No functional changes.

Reviewed-by: Frank Li <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mathieu Poirier <[email protected]>

…anup

Convert imx_rproc_free_mbox() to a devm-managed cleanup action using
devm_add_action_or_reset(). Ensure the mailbox resources are freed
automatically with the device lifecycle, simplify error handling and
removing the need for manual cleanup in probe and remove paths.

Also improve error reporting by using dev_err_probe() for consistency and
clarity.

No functional changes.

Reviewed-by: Frank Li <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mathieu Poirier <[email protected]>

Replace separate calls to devm_clk_get() and clk_prepare_enable() with
devm_clk_get_enabled(), which combines clock acquisition and enabling
into a single managed step. Simplify the probe logic and remove the need
for manual clock disable in error and remove paths.

Also, update error handling to eliminate redundant cleanup steps and use
return-based error propagation where appropriate. Improve code clarity and
reduce the chance of resource leaks or incorrect ordering in cleanup paths.

No functional changes.

Reviewed-by: Frank Li <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mathieu Poirier <[email protected]>

Replace the explicit call to imx_rproc_put_scu() in the remove path with
devm_add_action_or_reset(). Ensure proper cleanup of scu resources and
simplify the code by leveraging the device-managed resource framework.

Additionally:
 - Remove the IMX_RPROC_SCU_API check from imx_rproc_put_scu(), as
   devm_add_action_or_reset() now exclusively handles SCU cleanup.
 - Improve error reporting by using dev_err_probe() for consistency and
   clarity.
 - Drop the err_put_scu label, as it is now redundant due to the updated
   error handling approach.

No functional changes.

Reviewed-by: Frank Li <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mathieu Poirier <[email protected]>

Replace manual rproc_add() and cleanup logic with devm_rproc_add(), which
ties the remoteproc lifecycle to the device's lifecycle. This simplifies
error handling and ensures proper cleanup.

With no need to invoke rproc_del(), the remove() ops could be removed.

No functional changes.

Reviewed-by: Frank Li <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mathieu Poirier <[email protected]>

Simplify the clock enable logic by removing the dedicated
imx_rproc_clk_enable() function and integrate the clock handling directly
into the probe function to simplify the code.

Add a new IMX_RPROC_NEED_CLKS flag in dcfg to indicate whether clock
management is required for a given SoC. Update probe logic to conditionally
enable clocks based on the new flag.

Set the flag for applicable SoCs (e.g., i.MX7D, i.MX8MQ, i.MX93, etc.).

No functional changes.

Reviewed-by: Frank Li <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Signed-off-by: Peng Fan <[email protected]>

Refactor the detach logic to support platform-specific implementations via
the dcfg->ops->detach callback. Allow finer control over detach behavior
depending on the remote processor management method, and make it easier
to add detach support for new SoCs.

The previous hardcoded SCU API detach logic is now moved into a dedicated
imx_rproc_scu_api_detach() function, and registered via the plat ops
structure. The generic imx_rproc_detach() now delegates to the
platform-specific handler if available.

Also, the dcfg->method check with IMX_RPROC_SCU_API is removed.

No functional changes.

Reviewed-by: Frank Li <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Signed-off-by: Peng Fan <[email protected]>

PM runtime support is safe and applicable across all i.MX platforms, not
just those using the SCU API. Remove the conditional check and enable PM
runtime unconditionally to simplify the code and ensure consistent power
management behavior.

Signed-off-by: Peng Fan <[email protected]>
Reviewed-by: Frank Li <[email protected]>

'method' is no longer used in imx_rproc.c, so remove the assignment.
But imx_dsp_rproc.c is still using 'method', so still keep the field
in struct imx_rrpoc_dcfg.

No functional changes.

Reviewed-by: Frank Li <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Signed-off-by: Peng Fan <[email protected]>

Add an entry for the i.MX remoteproc driver

Acked-by: Shengjiu Wang <[email protected]>
Acked-by: Daniel Baluta <[email protected]>
Signed-off-by: Peng Fan <[email protected]>