[PATCH v5 09/24] clk: mediatek: Add mtk_clk_simple_probe() to simplify clock providers

Weiyi Lu
2020-11-09T02:05:46Z

Most of subsystem clock providers only need to register clock gates
in their probe() function.
To reduce the duplicated code by add a generic function.

Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com>
---
drivers/clk/mediatek/clk-mtk.c | 23 +++++++++++++++++++++++
drivers/clk/mediatek/clk-mtk.h | 8 ++++++++
2 files changed, 31 insertions(+)

diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c
index cec1c8a..67693b7 100644
--- a/drivers/clk/mediatek/clk-mtk.c
+++ b/drivers/clk/mediatek/clk-mtk.c
@@ -13,6 +13,7 @@
#include <linux/clkdev.h>
#include <linux/mfd/syscon.h>
#include <linux/device.h>
+#include <linux/of_device.h>

#include "clk-mtk.h"
#include "clk-gate.h"
@@ -286,3 +287,25 @@ void mtk_clk_register_dividers(const struct mtk_clk_divider *mcds,
clk_data->clks[mcd->id] = clk;
}
}
+
+int mtk_clk_simple_probe(struct platform_device *pdev)
+{
+ const struct mtk_clk_desc *mcd;
+ struct clk_onecell_data *clk_data;
+ struct device_node *node = pdev->dev.of_node;
+ int r;
+
+ mcd = of_device_get_match_data(&pdev->dev);
+ if (!mcd)
+ return -EINVAL;
+
+ clk_data = mtk_alloc_clk_data(mcd->num_clks);
+ if (!clk_data)
+ return -ENOMEM;
+
+ r = mtk_clk_register_gates(node, mcd->clks, mcd->num_clks, clk_data);
+ if (r)
+ return r;
+
+ return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+}
diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
index c580663..2f61fba 100644
--- a/drivers/clk/mediatek/clk-mtk.h
+++ b/drivers/clk/mediatek/clk-mtk.h
@@ -10,6 +10,7 @@
#include <linux/regmap.h>
#include <linux/bitops.h>
#include <linux/clk-provider.h>
+#include <linux/platform_device.h>

struct clk;
struct clk_onecell_data;
@@ -250,4 +251,11 @@ void mtk_register_reset_controller(struct device_node *np,
void mtk_register_reset_controller_set_clr(struct device_node *np,
unsigned int num_regs, int regofs);

+struct mtk_clk_desc {
+ const struct mtk_gate *clks;
+ size_t num_clks;
+};
+
+int mtk_clk_simple_probe(struct platform_device *pdev);
+
#endif /* __DRV_CLK_MTK_H */