add new system file

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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/clk/qcom/common.c
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@@ -206,6 +206,22 @@
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 }
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 EXPORT_SYMBOL_GPL(qcom_cc_register_sleep_clk);
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+/* Drop 'protected-clocks' from the list of clocks to register */
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+static void qcom_cc_drop_protected(struct device *dev, struct qcom_cc *cc)
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+{
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+	struct device_node *np = dev->of_node;
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+	struct property *prop;
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+	const __be32 *p;
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+	u32 i;
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+
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+	of_property_for_each_u32(np, "protected-clocks", prop, p, i) {
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+		if (i >= cc->num_rclks)
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+			continue;
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+
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+		cc->rclks[i] = NULL;
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+	}
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+}
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+
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 static struct clk_hw *qcom_cc_clk_hw_get(struct of_phandle_args *clkspec,
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 					 void *data)
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 {
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@@ -217,7 +233,7 @@
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 		return ERR_PTR(-EINVAL);
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 	}
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-	return cc->rclks[idx] ? &cc->rclks[idx]->hw : ERR_PTR(-ENOENT);
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+	return cc->rclks[idx] ? &cc->rclks[idx]->hw : NULL;
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 }
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 int qcom_cc_really_probe(struct platform_device *pdev,
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@@ -230,6 +246,8 @@
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 	struct gdsc_desc *scd;
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 	size_t num_clks = desc->num_clks;
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 	struct clk_regmap **rclks = desc->clks;
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+	size_t num_clk_hws = desc->num_clk_hws;
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+	struct clk_hw **clk_hws = desc->clk_hws;
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 	cc = devm_kzalloc(dev, sizeof(*cc), GFP_KERNEL);
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 	if (!cc)
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@@ -266,6 +284,14 @@
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 	cc->rclks = rclks;
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 	cc->num_rclks = num_clks;
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+	qcom_cc_drop_protected(dev, cc);
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+
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+	for (i = 0; i < num_clk_hws; i++) {
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+		ret = devm_clk_hw_register(dev, clk_hws[i]);
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+		if (ret)
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+			return ret;
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+	}
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+
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 	for (i = 0; i < num_clks; i++) {
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 		if (!rclks[i])
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 			continue;
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@@ -295,4 +321,24 @@
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 }
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 EXPORT_SYMBOL_GPL(qcom_cc_probe);
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+int qcom_cc_probe_by_index(struct platform_device *pdev, int index,
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+			   const struct qcom_cc_desc *desc)
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+{
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+	struct regmap *regmap;
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+	struct resource *res;
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+	void __iomem *base;
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+
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+	res = platform_get_resource(pdev, IORESOURCE_MEM, index);
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+	base = devm_ioremap_resource(&pdev->dev, res);
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+	if (IS_ERR(base))
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+		return -ENOMEM;
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+
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+	regmap = devm_regmap_init_mmio(&pdev->dev, base, desc->config);
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+	if (IS_ERR(regmap))
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+		return PTR_ERR(regmap);
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+
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+	return qcom_cc_really_probe(pdev, desc, regmap);
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+}
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+EXPORT_SYMBOL_GPL(qcom_cc_probe_by_index);
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+
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 MODULE_LICENSE("GPL v2");