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path: root/drivers/clk/mediatek/clk-mt2701-g3d.c
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Diffstat (limited to 'drivers/clk/mediatek/clk-mt2701-g3d.c')
-rw-r--r--drivers/clk/mediatek/clk-mt2701-g3d.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/drivers/clk/mediatek/clk-mt2701-g3d.c b/drivers/clk/mediatek/clk-mt2701-g3d.c
new file mode 100644
index 000000000000..1328c112a38f
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt2701-g3d.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 MediaTek Inc.
+ * Author: Sean Wang <sean.wang@mediatek.com>
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include "clk-mtk.h"
+#include "clk-gate.h"
+
+#include <dt-bindings/clock/mt2701-clk.h>
+
+#define GATE_G3D(_id, _name, _parent, _shift) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &g3d_cg_regs, \
+ .shift = _shift, \
+ .ops = &mtk_clk_gate_ops_setclr, \
+ }
+
+static const struct mtk_gate_regs g3d_cg_regs = {
+ .sta_ofs = 0x0,
+ .set_ofs = 0x4,
+ .clr_ofs = 0x8,
+};
+
+static const struct mtk_gate g3d_clks[] = {
+ GATE_G3D(CLK_G3DSYS_CORE, "g3d_core", "mfg_sel", 0),
+};
+
+static int clk_mt2701_g3dsys_init(struct platform_device *pdev)
+{
+ struct clk_onecell_data *clk_data;
+ struct device_node *node = pdev->dev.of_node;
+ int r;
+
+ clk_data = mtk_alloc_clk_data(CLK_G3DSYS_NR);
+
+ mtk_clk_register_gates(node, g3d_clks, ARRAY_SIZE(g3d_clks),
+ clk_data);
+
+ r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+ if (r)
+ dev_err(&pdev->dev,
+ "could not register clock provider: %s: %d\n",
+ pdev->name, r);
+
+ mtk_register_reset_controller(node, 1, 0xc);
+
+ return r;
+}
+
+static const struct of_device_id of_match_clk_mt2701_g3d[] = {
+ {
+ .compatible = "mediatek,mt2701-g3dsys",
+ .data = clk_mt2701_g3dsys_init,
+ }, {
+ /* sentinel */
+ }
+};
+
+static int clk_mt2701_g3d_probe(struct platform_device *pdev)
+{
+ int (*clk_init)(struct platform_device *);
+ int r;
+
+ clk_init = of_device_get_match_data(&pdev->dev);
+ if (!clk_init)
+ return -EINVAL;
+
+ r = clk_init(pdev);
+ if (r)
+ dev_err(&pdev->dev,
+ "could not register clock provider: %s: %d\n",
+ pdev->name, r);
+
+ return r;
+}
+
+static struct platform_driver clk_mt2701_g3d_drv = {
+ .probe = clk_mt2701_g3d_probe,
+ .driver = {
+ .name = "clk-mt2701-g3d",
+ .of_match_table = of_match_clk_mt2701_g3d,
+ },
+};
+
+builtin_platform_driver(clk_mt2701_g3d_drv);