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From:   David Yang <mmyangfl@gmail.com>
To:     linux-clk@vger.kernel.org
Cc:     David Yang <mmyangfl@gmail.com>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>, linux-kernel@vger.kernel.org
Subject: [PATCH v4 12/13] clk: hisilicon: hix5hd2: Convert into platform driver module
Date:   Wed, 12 Apr 2023 01:43:21 +0800
Message-Id: <20230411174329.424763-13-mmyangfl@gmail.com>
In-Reply-To: <20230411174329.424763-1-mmyangfl@gmail.com>
References: <20230411174329.424763-1-mmyangfl@gmail.com>
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Use common helper functions and register clks with a single of_device_id
data.

Signed-off-by: David Yang <mmyangfl@gmail.com>
---
 drivers/clk/hisilicon/clk-hix5hd2.c | 85 ++++++++++++++++++-----------
 1 file changed, 52 insertions(+), 33 deletions(-)

diff --git a/drivers/clk/hisilicon/clk-hix5hd2.c b/drivers/clk/hisilicon/clk-hix5hd2.c
index 64bdd3f05725..fb0f5d2745b2 100644
--- a/drivers/clk/hisilicon/clk-hix5hd2.c
+++ b/drivers/clk/hisilicon/clk-hix5hd2.c
@@ -4,13 +4,17 @@
  * Copyright (c) 2014 Hisilicon Limited.
  */
 
-#include <linux/of_address.h>
 #include <dt-bindings/clock/hix5hd2-clock.h>
+
 #include <linux/slab.h>
 #include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+
 #include "clk.h"
 
-static struct hisi_fixed_rate_clock hix5hd2_fixed_rate_clks[] __initdata = {
+static struct hisi_fixed_rate_clock hix5hd2_fixed_rate_clks[] = {
 	{ HIX5HD2_FIXED_1200M, "1200m", NULL, 0, 1200000000, },
 	{ HIX5HD2_FIXED_400M, "400m", NULL, 0, 400000000, },
 	{ HIX5HD2_FIXED_48M, "48m", NULL, 0, 48000000, },
@@ -43,19 +47,19 @@ static struct hisi_fixed_rate_clock hix5hd2_fixed_rate_clks[] __initdata = {
 	{ HIX5HD2_FIXED_83M, "83m", NULL, 0, 83333333, },
 };
 
-static const char *const sfc_mux_p[] __initconst = {
+static const char *const sfc_mux_p[] = {
 		"24m", "150m", "200m", "100m", "75m", };
 static u32 sfc_mux_table[] = {0, 4, 5, 6, 7};
 
-static const char *const sdio_mux_p[] __initconst = {
+static const char *const sdio_mux_p[] = {
 		"75m", "100m", "50m", "15m", };
 static u32 sdio_mux_table[] = {0, 1, 2, 3};
 
-static const char *const fephy_mux_p[] __initconst = { "25m", "125m"};
+static const char *const fephy_mux_p[] = { "25m", "125m"};
 static u32 fephy_mux_table[] = {0, 1};
 
 
-static struct hisi_mux_clock hix5hd2_mux_clks[] __initdata = {
+static struct hisi_mux_clock hix5hd2_mux_clks[] = {
 	{ HIX5HD2_SFC_MUX, "sfc_mux", sfc_mux_p, ARRAY_SIZE(sfc_mux_p),
 		CLK_SET_RATE_PARENT, 0x5c, 8, 3, 0, sfc_mux_table, },
 	{ HIX5HD2_MMC_MUX, "mmc_mux", sdio_mux_p, ARRAY_SIZE(sdio_mux_p),
@@ -67,7 +71,7 @@ static struct hisi_mux_clock hix5hd2_mux_clks[] __initdata = {
 		CLK_SET_RATE_PARENT, 0x120, 8, 2, 0, fephy_mux_table, },
 };
 
-static struct hisi_gate_clock hix5hd2_gate_clks[] __initdata = {
+static struct hisi_gate_clock hix5hd2_gate_clks[] = {
 	/* sfc */
 	{ HIX5HD2_SFC_CLK, "clk_sfc", "sfc_mux",
 		CLK_SET_RATE_PARENT, 0x5c, 0, 0, },
@@ -153,7 +157,7 @@ struct hix5hd2_clk_complex {
 	u32		phy_rst_mask;
 };
 
-static struct hix5hd2_complex_clock hix5hd2_complex_clks[] __initdata = {
+static struct hix5hd2_complex_clock hix5hd2_complex_clks[] = {
 	{"clk_mac0", "clk_fephy", HIX5HD2_MAC0_CLK,
 		0xcc, 0xa, 0x500, 0x120, 0, 0x10, TYPE_ETHER},
 	{"clk_mac1", "clk_fwd_sys", HIX5HD2_MAC1_CLK,
@@ -249,21 +253,22 @@ static const struct clk_ops clk_complex_ops = {
 	.disable = clk_complex_disable,
 };
 
-static void __init
-hix5hd2_clk_register_complex(struct hix5hd2_complex_clock *clks, int nums,
+static int
+hix5hd2_clk_register_complex(struct device *dev, const void *clocks, size_t num,
 			     struct hisi_clock_data *data)
 {
+	const struct hix5hd2_complex_clock *clks = clocks;
 	void __iomem *base = data->base;
 	int i;
 
-	for (i = 0; i < nums; i++) {
+	for (i = 0; i < num; i++) {
 		struct hix5hd2_clk_complex *p_clk;
 		struct clk *clk;
 		struct clk_init_data init;
 
 		p_clk = kzalloc(sizeof(*p_clk), GFP_KERNEL);
 		if (!p_clk)
-			return;
+			return -ENOMEM;
 
 		init.name = clks[i].name;
 		if (clks[i].type == TYPE_ETHER)
@@ -289,31 +294,45 @@ hix5hd2_clk_register_complex(struct hix5hd2_complex_clock *clks, int nums,
 			kfree(p_clk);
 			pr_err("%s: failed to register clock %s\n",
 			       __func__, clks[i].name);
-			continue;
+			return PTR_ERR(p_clk);
 		}
 
 		data->clk_data.clks[clks[i].id] = clk;
 	}
-}
 
-static void __init hix5hd2_clk_init(struct device_node *np)
-{
-	struct hisi_clock_data *clk_data;
-
-	clk_data = hisi_clk_init(np, HIX5HD2_NR_CLKS);
-	if (!clk_data)
-		return;
-
-	hisi_clk_register_fixed_rate(hix5hd2_fixed_rate_clks,
-				     ARRAY_SIZE(hix5hd2_fixed_rate_clks),
-				     clk_data);
-	hisi_clk_register_mux(hix5hd2_mux_clks, ARRAY_SIZE(hix5hd2_mux_clks),
-					clk_data);
-	hisi_clk_register_gate(hix5hd2_gate_clks,
-			ARRAY_SIZE(hix5hd2_gate_clks), clk_data);
-	hix5hd2_clk_register_complex(hix5hd2_complex_clks,
-				     ARRAY_SIZE(hix5hd2_complex_clks),
-				     clk_data);
+	return 0;
 }
 
-CLK_OF_DECLARE(hix5hd2_clk, "hisilicon,hix5hd2-clock", hix5hd2_clk_init);
+static const struct hisi_clocks hix5hd2_clks = {
+	.nr = HIX5HD2_NR_CLKS,
+	.fixed_rate_clks = hix5hd2_fixed_rate_clks,
+	.fixed_factor_clks_num = ARRAY_SIZE(hix5hd2_fixed_rate_clks),
+	.mux_clks = hix5hd2_mux_clks,
+	.mux_clks_num = ARRAY_SIZE(hix5hd2_mux_clks),
+	.gate_clks = hix5hd2_gate_clks,
+	.gate_clks_num = ARRAY_SIZE(hix5hd2_gate_clks),
+	.customized_clks = hix5hd2_complex_clks,
+	.customized_clks_num = ARRAY_SIZE(hix5hd2_complex_clks),
+	.clk_register_customized = hix5hd2_clk_register_complex,
+};
+
+static const struct of_device_id hix5hd2_clk_match_table[] = {
+	{ .compatible = "hisilicon,hix5hd2-clock",
+	  .data = &hix5hd2_clks },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, hix5hd2_clk_match_table);
+
+static struct platform_driver hix5hd2_clk_driver = {
+	.probe = hisi_clk_probe,
+	.remove = hisi_clk_remove,
+	.driver		= {
+		.name	= "hix5hd2-clock",
+		.of_match_table = hix5hd2_clk_match_table,
+	},
+};
+
+module_platform_driver(hix5hd2_clk_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("HiSilicon Hix5hd2 Clock Driver");
-- 
2.39.2