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d989a3256a
Refreshed patches for qualcommb/ipq95xx by running make target/linux/refresh after creating a .config containing: CONFIG_TARGET_qualcommbe=y CONFIG_TARGET_qualcommbe_ipq95xx=y CONFIG_TARGET_qualcommbe_ipq95xx_DEVICE_qcom_rdp433=y Signed-off-by: John Audia <therealgraysky@proton.me> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
108 lines
3.3 KiB
Diff
108 lines
3.3 KiB
Diff
From 265b07df758a998f60cf5b5aec6bd72ca676655e Mon Sep 17 00:00:00 2001
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From: Shradha Todi <shradha.t@samsung.com>
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Date: Tue, 20 Feb 2024 14:10:45 +0530
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Subject: [PATCH] clk: Provide managed helper to get and enable bulk clocks
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Provide a managed devm_clk_bulk* wrapper to get and enable all
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bulk clocks in order to simplify drivers that keeps all clocks
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enabled for the time of driver operation.
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Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com>
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Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
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Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
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Signed-off-by: Shradha Todi <shradha.t@samsung.com>
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Link: https://lore.kernel.org/r/20240220084046.23786-2-shradha.t@samsung.com
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Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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---
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drivers/clk/clk-devres.c | 40 ++++++++++++++++++++++++++++++++++++++++
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include/linux/clk.h | 22 ++++++++++++++++++++++
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2 files changed, 62 insertions(+)
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--- a/drivers/clk/clk-devres.c
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+++ b/drivers/clk/clk-devres.c
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@@ -182,6 +182,46 @@ int __must_check devm_clk_bulk_get_all(s
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}
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EXPORT_SYMBOL_GPL(devm_clk_bulk_get_all);
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+static void devm_clk_bulk_release_all_enable(struct device *dev, void *res)
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+{
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+ struct clk_bulk_devres *devres = res;
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+
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+ clk_bulk_disable_unprepare(devres->num_clks, devres->clks);
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+ clk_bulk_put_all(devres->num_clks, devres->clks);
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+}
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+
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+int __must_check devm_clk_bulk_get_all_enable(struct device *dev,
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+ struct clk_bulk_data **clks)
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+{
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+ struct clk_bulk_devres *devres;
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+ int ret;
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+
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+ devres = devres_alloc(devm_clk_bulk_release_all_enable,
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+ sizeof(*devres), GFP_KERNEL);
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+ if (!devres)
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+ return -ENOMEM;
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+
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+ ret = clk_bulk_get_all(dev, &devres->clks);
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+ if (ret > 0) {
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+ *clks = devres->clks;
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+ devres->num_clks = ret;
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+ } else {
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+ devres_free(devres);
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+ return ret;
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+ }
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+
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+ ret = clk_bulk_prepare_enable(devres->num_clks, *clks);
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+ if (!ret) {
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+ devres_add(dev, devres);
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+ } else {
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+ clk_bulk_put_all(devres->num_clks, devres->clks);
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+ devres_free(devres);
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+ }
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+
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+ return ret;
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+}
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+EXPORT_SYMBOL_GPL(devm_clk_bulk_get_all_enable);
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+
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static int devm_clk_match(struct device *dev, void *res, void *data)
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{
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struct clk **c = res;
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--- a/include/linux/clk.h
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+++ b/include/linux/clk.h
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@@ -479,6 +479,22 @@ int __must_check devm_clk_bulk_get_all(s
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struct clk_bulk_data **clks);
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/**
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+ * devm_clk_bulk_get_all_enable - Get and enable all clocks of the consumer (managed)
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+ * @dev: device for clock "consumer"
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+ * @clks: pointer to the clk_bulk_data table of consumer
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+ *
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+ * Returns success (0) or negative errno.
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+ *
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+ * This helper function allows drivers to get all clocks of the
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+ * consumer and enables them in one operation with management.
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+ * The clks will automatically be disabled and freed when the device
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+ * is unbound.
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+ */
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+
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+int __must_check devm_clk_bulk_get_all_enable(struct device *dev,
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+ struct clk_bulk_data **clks);
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+
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+/**
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* devm_clk_get - lookup and obtain a managed reference to a clock producer.
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* @dev: device for clock "consumer"
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* @id: clock consumer ID
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@@ -968,6 +984,12 @@ static inline int __must_check devm_clk_
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return 0;
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}
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+static inline int __must_check devm_clk_bulk_get_all_enable(struct device *dev,
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+ struct clk_bulk_data **clks)
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+{
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+ return 0;
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+}
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+
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static inline struct clk *devm_get_clk_from_child(struct device *dev,
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struct device_node *np, const char *con_id)
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{
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