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@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20200914022316.24045-1-zhangqing@rock-chips.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/drivers/clk/rockchip/Kconfig b/drivers/clk/rockchip/Kconfig
index 524b0e0..47cd6c5 100644 (file)
--- a/drivers/clk/rockchip/Kconfig
+++ b/drivers/clk/rockchip/Kconfig
@@ -71,7 +71,7 @@ config CLK_RK3368
          Build the driver for RK3368 Clock Driver.
 
 config CLK_RK3399
-       bool "Rockchip RK3399 clock controller support"
+       tristate "Rockchip RK3399 clock controller support"
        default y
        help
          Build the driver for RK3399 Clock Driver.

diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c
index ce1d244..7df2f1e 100644 (file)
--- 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");