diff options
| author |   Shradha Todi <shradha.t@samsung.com> | 2024-02-20 14:10:45 +0530 |
|---|---|---|
| committer |   Stephen Boyd <sboyd@kernel.org> | 2024-02-21 21:13:36 -0800 |
| commit | 265b07df758a998f60cf5b5aec6bd72ca676655e (patch) | |
| tree | f4ae9430aaece4a1d16665fdff7fde575a6668e0 /drivers/clk/clk-devres.c | |
| parent | Linux 6.8-rc1 (diff) | |
| download | wireguard-linux-265b07df758a998f60cf5b5aec6bd72ca676655e.tar.xz wireguard-linux-265b07df758a998f60cf5b5aec6bd72ca676655e.zip | |
clk: Provide managed helper to get and enable bulk clocks
Provide a managed devm_clk_bulk* wrapper to get and enable all
bulk clocks in order to simplify drivers that keeps all clocks
enabled for the time of driver operation.
Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Shradha Todi <shradha.t@samsung.com>
Link: https://lore.kernel.org/r/20240220084046.23786-2-shradha.t@samsung.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/clk-devres.c')
| -rw-r--r-- | drivers/clk/clk-devres.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/clk/clk-devres.c b/drivers/clk/clk-devres.c index 737aa70e2cb3..90e6078fb6e1 100644 --- a/drivers/clk/clk-devres.c +++ b/drivers/clk/clk-devres.c @@ -182,6 +182,46 @@ int __must_check devm_clk_bulk_get_all(struct device *dev, } EXPORT_SYMBOL_GPL(devm_clk_bulk_get_all); +static void devm_clk_bulk_release_all_enable(struct device *dev, void *res) +{ + struct clk_bulk_devres *devres = res; + + clk_bulk_disable_unprepare(devres->num_clks, devres->clks); + clk_bulk_put_all(devres->num_clks, devres->clks); +} + +int __must_check devm_clk_bulk_get_all_enable(struct device *dev, + struct clk_bulk_data **clks) +{ + struct clk_bulk_devres *devres; + int ret; + + devres = devres_alloc(devm_clk_bulk_release_all_enable, + sizeof(*devres), GFP_KERNEL); + if (!devres) + return -ENOMEM; + + ret = clk_bulk_get_all(dev, &devres->clks); + if (ret > 0) { + *clks = devres->clks; + devres->num_clks = ret; + } else { + devres_free(devres); + return ret; + } + + ret = clk_bulk_prepare_enable(devres->num_clks, *clks); + if (!ret) { + devres_add(dev, devres); + } else { + clk_bulk_put_all(devres->num_clks, devres->clks); + devres_free(devres); + } + + return ret; +} +EXPORT_SYMBOL_GPL(devm_clk_bulk_get_all_enable); + static int devm_clk_match(struct device *dev, void *res, void *data) { struct clk **c = res; |