kernel/drivers/clk/clk-fixed-factor.c, branch linux-rolling-stable

clk: fixed-factor: drop round_rate() clk ops

2025-09-08T13:41:31Z

This driver implements both the determine_rate() and round_rate() clk ops, and the round_rate() clk ops is deprecated. When both are defined, clk_core_determine_round_nolock() from the clk core will only use the determine_rate() clk ops. Also all clk drivers that directly calls fixed-factor's round_rate() have been migrated over to determine_rate(). So let's remove the round_rate() clk ops. Reviewed-by: Alexander Sverdlin Signed-off-by: Brian Masney

clk: fixed-factor: add determine_rate() ops

2025-09-08T13:41:26Z

The round_rate() clk ops is deprecated, and determine_rate() should be used instead. We can't just simply convert this driver over initially since other drivers depend on this. So let's go ahead and add a determine_rate() clk ops. Once all of the drivers have been converted, then the round_rate() clk ops can be dropped. Signed-off-by: Brian Masney

clk: fixed-factor: add clk_hw_register_fixed_factor_index() function

2024-11-14T22:52:26Z

Add non-devres version of clk_hw_register_fixed_factor(), with parent targeted using its index. Signed-off-by: Théo Lebrun Link: https://lore.kernel.org/r/20241106-mbly-clk-v2-3-84cfefb3f485@bootlin.com Signed-off-by: Stephen Boyd

clk: Switch back to struct platform_driver::remove()

2024-09-21T21:12:05Z

After commit 0edb555a65d1 ("platform: Make platform_driver::remove() return void") .remove() is (again) the right callback to implement for platform drivers. Convert all clk drivers to use .remove(), with the eventual goal to drop struct platform_driver::remove_new(). As .remove() and .remove_new() have the same prototypes, conversion is done by just changing the structure member name in the driver initializer. Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20240909144026.870565-2-u.kleine-koenig@baylibre.com Acked-by: Geert Uytterhoeven # renesas Signed-off-by: Stephen Boyd

clk: fixed-factor: add fwname-based constructor functions

2024-02-22T06:11:51Z

Add four functions to register clk_hw based on the fw_name field in clk_parent_data, ie the value in the DT property `clock-names`. There are variants for devm or not and passing an accuracy or not passing one: - clk_hw_register_fixed_factor_fwname - clk_hw_register_fixed_factor_with_accuracy_fwname - devm_clk_hw_register_fixed_factor_fwname - devm_clk_hw_register_fixed_factor_with_accuracy_fwname The `struct clk_parent_data` init is extracted from __clk_hw_register_fixed_factor to each calling function. It is required to allow each function to pass whatever field they want, not only index. Signed-off-by: Théo Lebrun Link: https://lore.kernel.org/r/20240221-mbly-clk-v7-2-31d4ce3630c3@bootlin.com Signed-off-by: Stephen Boyd

clk: fixed-factor: add optional accuracy support

2024-02-22T06:11:48Z

Fixed factor clock reports the parent clock accuracy. Add flags and acc fields to `struct clk_fixed_factor` to support setting a fixed accuracy. The default if no flag is set is not changed: use the parent clock accuracy. Signed-off-by: Théo Lebrun Link: https://lore.kernel.org/r/20240221-mbly-clk-v7-1-31d4ce3630c3@bootlin.com Signed-off-by: Stephen Boyd

clk: fixed-factor: Convert to platform remove callback returning void

2023-03-29T02:23:36Z

The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is (mostly) ignored and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20230312161512.2715500-9-u.kleine-koenig@pengutronix.de Signed-off-by: Stephen Boyd

clk: fixed-factor: Introduce *clk_hw_register_fixed_factor_parent_hw()

2022-07-29T23:44:08Z

Add the devres and non-devres variant of clk_hw_register_fixed_factor_parent_hw() for registering a fixed factor clock with clk_hw parent pointer instead of parent name. Signed-off-by: Marijn Suijten Link: https://lore.kernel.org/r/20220629225331.357308-4-marijn.suijten@somainline.org Signed-off-by: Stephen Boyd

clk: fixed: Remove Allwinner A10 special-case logic

2022-06-09T22:40:23Z

This compatible is part of the legacy sunxi clock support, and has not been used since commit 6b48644b1d29 ("ARM: gr8: Convert to CCU") in October 2016. Since supporting this compatible adds some overhead to generic clock code, let's clean it up. Signed-off-by: Samuel Holland Link: https://lore.kernel.org/r/20220531051742.43273-1-samuel@sholland.org Signed-off-by: Stephen Boyd

clk: fixed-factor: Introduce devm_clk_hw_register_fixed_factor_index()

2022-03-18T21:04:54Z

Add an API for a fixed factor clk that uses an index for the parent instead of a string name. This allows us to move drivers away from the string based method of describing parents and use the DT/firmware based method instead. Signed-off-by: Marek Vasut Cc: Michael Turquette Cc: Rob Herring Cc: Stephen Boyd Cc: devicetree@vger.kernel.org Link: https://lore.kernel.org/r/20220226040723.143705-2-marex@denx.de [sboyd@kernel.org: Expose a new API instead of internal function] Signed-off-by: Stephen Boyd