clk: mvebu: add helper file for Armada AP and CP clocks

Clock drivers for Armada AP and Armada CP use the same function to
generate unique clock name. A third drivers is coming with the same
need, so it's time to move this function in a common file.

Signed-off-by: Gregory CLEMENT <[e-mail]>
Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/mvebu/Kconfig

···
 config MVEBU_CLK_COREDIV
 	bool
 
+config ARMADA_AP_CP_HELPER
+	bool
+
 config ARMADA_370_CLK
 	bool
 	select MVEBU_CLK_COMMON
···
 
 config ARMADA_AP806_SYSCON
 	bool
+	select ARMADA_AP_CP_HELPER
 
 config ARMADA_CP110_SYSCON
 	bool
+	select ARMADA_AP_CP_HELPER
 
 config DOVE_CLK
 	bool

drivers/clk/mvebu/Makefile

···
 obj-$(CONFIG_MVEBU_CLK_COMMON)	+= common.o
 obj-$(CONFIG_MVEBU_CLK_CPU) 	+= clk-cpu.o
 obj-$(CONFIG_MVEBU_CLK_COREDIV)	+= clk-corediv.o
+obj-$(CONFIG_ARMADA_AP_CP_HELPER) += armada_ap_cp_helper.o
 
 obj-$(CONFIG_ARMADA_370_CLK)	+= armada-370.o
 obj-$(CONFIG_ARMADA_375_CLK)	+= armada-375.o

drivers/clk/mvebu/ap806-system-controller.c

···
 
 #define pr_fmt(fmt) "ap806-system-controller: " fmt
 
+#include "armada_ap_cp_helper.h"
 #include <linux/clk-provider.h>
 #include <linux/mfd/syscon.h>
 #include <linux/init.h>
 #include <linux/of.h>
-#include <linux/of_address.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 
···
 	.clks = ap806_clks,
 	.clk_num = AP806_CLK_NUM,
 };
-
-static char *ap806_unique_name(struct device *dev, struct device_node *np,
-			       char *name)
-{
-	const __be32 *reg;
-	u64 addr;
-
-	reg = of_get_property(np, "reg", NULL);
-	addr = of_translate_address(np, reg);
-	return devm_kasprintf(dev, GFP_KERNEL, "%llx-%s",
-			(unsigned long long)addr, name);
-}
 
 static int ap806_syscon_common_probe(struct platform_device *pdev,
 				     struct device_node *syscon_node)
···
 	cpuclk_freq *= 1000 * 1000;
 
 	/* CPU clocks depend on the Sample At Reset configuration */
-	name = ap806_unique_name(dev, syscon_node, "cpu-cluster-0");
+	name = ap_cp_unique_name(dev, syscon_node, "cpu-cluster-0");
 	ap806_clks[0] = clk_register_fixed_rate(dev, name, NULL,
 						0, cpuclk_freq);
 	if (IS_ERR(ap806_clks[0])) {
···
 		goto fail0;
 	}
 
-	name = ap806_unique_name(dev, syscon_node, "cpu-cluster-1");
+	name = ap_cp_unique_name(dev, syscon_node, "cpu-cluster-1");
 	ap806_clks[1] = clk_register_fixed_rate(dev, name, NULL, 0,
 						cpuclk_freq);
 	if (IS_ERR(ap806_clks[1])) {
···
 	}
 
 	/* Fixed clock is always 1200 Mhz */
-	fixedclk_name = ap806_unique_name(dev, syscon_node, "fixed");
+	fixedclk_name = ap_cp_unique_name(dev, syscon_node, "fixed");
 	ap806_clks[2] = clk_register_fixed_rate(dev, fixedclk_name, NULL,
 						0, 1200 * 1000 * 1000);
 	if (IS_ERR(ap806_clks[2])) {
···
 	}
 
 	/* MSS Clock is fixed clock divided by 6 */
-	name = ap806_unique_name(dev, syscon_node, "mss");
+	name = ap_cp_unique_name(dev, syscon_node, "mss");
 	ap806_clks[3] = clk_register_fixed_factor(NULL, name, fixedclk_name,
 						  0, 1, 6);
 	if (IS_ERR(ap806_clks[3])) {
···
 	}
 
 	/* SDIO(/eMMC) Clock is fixed clock divided by 3 */
-	name = ap806_unique_name(dev, syscon_node, "sdio");
+	name = ap_cp_unique_name(dev, syscon_node, "sdio");
 	ap806_clks[4] = clk_register_fixed_factor(NULL, name,
 						  fixedclk_name,
 						  0, 1, 3);

drivers/clk/mvebu/armada_ap_cp_helper.c

···
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Marvell Armada AP and CP110 helper
+ *
+ * Copyright (C) 2018 Marvell
+ *
+ * Gregory Clement <[e-mail]>
+ *
+ */
+
+#include "armada_ap_cp_helper.h"
+#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+char *ap_cp_unique_name(struct device *dev, struct device_node *np,
+			const char *name)
+{
+	const __be32 *reg;
+	u64 addr;
+
+	/* Do not create a name if there is no clock */
+	if (!name)
+		return NULL;
+
+	reg = of_get_property(np, "reg", NULL);
+	addr = of_translate_address(np, reg);
+	return devm_kasprintf(dev, GFP_KERNEL, "%llx-%s",
+			      (unsigned long long)addr, name);
+}

drivers/clk/mvebu/armada_ap_cp_helper.h

···
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __ARMADA_AP_CP_HELPER_H
+#define __ARMADA_AP_CP_HELPER_H
+
+struct device;
+struct device_node;
+
+char *ap_cp_unique_name(struct device *dev, struct device_node *np,
+			const char *name);
+#endif

drivers/clk/mvebu/cp110-system-controller.c

···
 
 #define pr_fmt(fmt) "cp110-system-controller: " fmt
 
+#include "armada_ap_cp_helper.h"
 #include <linux/clk-provider.h>
 #include <linux/mfd/syscon.h>
 #include <linux/init.h>
 #include <linux/of.h>
-#include <linux/of_address.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
···
 	return ERR_PTR(-EINVAL);
 }
 
-static char *cp110_unique_name(struct device *dev, struct device_node *np,
-			       const char *name)
-{
-	const __be32 *reg;
-	u64 addr;
-
-	/* Do not create a name if there is no clock */
-	if (!name)
-		return NULL;
-
-	reg = of_get_property(np, "reg", NULL);
-	addr = of_translate_address(np, reg);
-	return devm_kasprintf(dev, GFP_KERNEL, "%llx-%s",
-			      (unsigned long long)addr, name);
-}
-
 static int cp110_syscon_common_probe(struct platform_device *pdev,
 				     struct device_node *syscon_node)
 {
···
 	cp110_clk_data->num = CP110_CLK_NUM;
 
 	/* Register the PLL0 which is the root of the hw tree */
-	pll0_name = cp110_unique_name(dev, syscon_node, "pll0");
+	pll0_name = ap_cp_unique_name(dev, syscon_node, "pll0");
 	hw = clk_hw_register_fixed_rate(NULL, pll0_name, NULL, 0,
 					1000 * 1000 * 1000);
 	if (IS_ERR(hw)) {
···
 	cp110_clks[CP110_CORE_PLL0] = hw;
 
 	/* PPv2 is PLL0/3 */
-	ppv2_name = cp110_unique_name(dev, syscon_node, "ppv2-core");
+	ppv2_name = ap_cp_unique_name(dev, syscon_node, "ppv2-core");
 	hw = clk_hw_register_fixed_factor(NULL, ppv2_name, pll0_name, 0, 1, 3);
 	if (IS_ERR(hw)) {
 		ret = PTR_ERR(hw);
···
 	cp110_clks[CP110_CORE_PPV2] = hw;
 
 	/* X2CORE clock is PLL0/2 */
-	x2core_name = cp110_unique_name(dev, syscon_node, "x2core");
+	x2core_name = ap_cp_unique_name(dev, syscon_node, "x2core");
 	hw = clk_hw_register_fixed_factor(NULL, x2core_name, pll0_name,
 					  0, 1, 2);
 	if (IS_ERR(hw)) {
···
 	cp110_clks[CP110_CORE_X2CORE] = hw;
 
 	/* Core clock is X2CORE/2 */
-	core_name = cp110_unique_name(dev, syscon_node, "core");
+	core_name = ap_cp_unique_name(dev, syscon_node, "core");
 	hw = clk_hw_register_fixed_factor(NULL, core_name, x2core_name,
 					  0, 1, 2);
 	if (IS_ERR(hw)) {
···
 
 	cp110_clks[CP110_CORE_CORE] = hw;
 	/* NAND can be either PLL0/2.5 or core clock */
-	nand_name = cp110_unique_name(dev, syscon_node, "nand-core");
+	nand_name = ap_cp_unique_name(dev, syscon_node, "nand-core");
 	if (nand_clk_ctrl & NF_CLOCK_SEL_400_MASK)
 		hw = clk_hw_register_fixed_factor(NULL, nand_name,
 						   pll0_name, 0, 2, 5);
···
 	cp110_clks[CP110_CORE_NAND] = hw;
 
 	/* SDIO clock is PLL0/2.5 */
-	sdio_name = cp110_unique_name(dev, syscon_node, "sdio-core");
+	sdio_name = ap_cp_unique_name(dev, syscon_node, "sdio-core");
 	hw = clk_hw_register_fixed_factor(NULL, sdio_name,
 					  pll0_name, 0, 2, 5);
 	if (IS_ERR(hw)) {
···
 
 	/* create the unique name for all the gate clocks */
 	for (i = 0; i < ARRAY_SIZE(gate_base_names); i++)
-		gate_name[i] =	cp110_unique_name(dev, syscon_node,
+		gate_name[i] =	ap_cp_unique_name(dev, syscon_node,
 						  gate_base_names[i]);
 
 	for (i = 0; i < ARRAY_SIZE(gate_base_names); i++) {