linux-kernel - [PATCH v4 6/6] clk: rockchip: rk3399: Support module build

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Message-Id: <20200914022316.24045-1-zhangqing@rock-chips.com>
Date:   Mon, 14 Sep 2020 10:23:16 +0800
From:   Elaine Zhang <zhangqing@...k-chips.com>
To:     heiko@...ech.de
Cc:     mturquette@...libre.com, sboyd@...nel.org,
        linux-clk@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-kernel@...r.kernel.org, xxx@...k-chips.com,
        xf@...k-chips.com, huangtao@...k-chips.com,
        kever.yang@...k-chips.com, Elaine Zhang <zhangqing@...k-chips.com>
Subject: [PATCH v4 6/6] clk: rockchip: rk3399: Support module build

support CLK_OF_DECLARE and builtin_platform_driver_probe
double clk init method.
add module author, description and license to support building
Soc Rk3399 clock driver as module.

Signed-off-by: Elaine Zhang <zhangqing@...k-chips.com>
Reviewed-by: Kever Yang <kever.yang@...k-chips.com>
---
 drivers/clk/rockchip/clk-rk3399.c | 56 +++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c
index ce1d2446f142..7df2f1e00347 100644
--- a/drivers/clk/rockchip/clk-rk3399.c
+++ b/drivers/clk/rockchip/clk-rk3399.c
@@ -5,9 +5,11 @@
  */
 
 #include <linux/clk-provider.h>
+#include <linux/module.h>
 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <dt-bindings/clock/rk3399-cru.h>
@@ -1600,3 +1602,57 @@ static void __init rk3399_pmu_clk_init(struct device_node *np)
 	rockchip_clk_of_add_provider(np, ctx);
 }
 CLK_OF_DECLARE(rk3399_cru_pmu, "rockchip,rk3399-pmucru", rk3399_pmu_clk_init);
+
+struct clk_rk3399_inits {
+	void (*inits)(struct device_node *np);
+};
+
+static const struct clk_rk3399_inits clk_rk3399_pmucru_init = {
+	.inits = rk3399_pmu_clk_init,
+};
+
+static const struct clk_rk3399_inits clk_rk3399_cru_init = {
+	.inits = rk3399_clk_init,
+};
+
+static const struct of_device_id clk_rk3399_match_table[] = {
+	{
+		.compatible = "rockchip,rk3399-cru",
+		.data = &clk_rk3399_cru_init,
+	},  {
+		.compatible = "rockchip,rk3399-pmucru",
+		.data = &clk_rk3399_pmucru_init,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, clk_rk3399_match_table);
+
+static int __init clk_rk3399_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	const struct of_device_id *match;
+	const struct clk_rk3399_inits *init_data;
+
+	match = of_match_device(clk_rk3399_match_table, &pdev->dev);
+	if (!match || !match->data)
+		return -EINVAL;
+
+	init_data = match->data;
+	if (init_data->inits)
+		init_data->inits(np);
+
+	return 0;
+}
+
+static struct platform_driver clk_rk3399_driver = {
+	.driver		= {
+		.name	= "clk-rk3399",
+		.of_match_table = clk_rk3399_match_table,
+		.suppress_bind_attrs = true,
+	},
+};
+builtin_platform_driver_probe(clk_rk3399_driver, clk_rk3399_probe);
+
+MODULE_DESCRIPTION("Rockchip RK3399 Clock Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:clk-rk3399");
-- 
2.17.1