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path: root/drivers/clk/mediatek/clk-mt6797-venc.c
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Diffstat (limited to 'drivers/clk/mediatek/clk-mt6797-venc.c')
-rw-r--r--drivers/clk/mediatek/clk-mt6797-venc.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/clk/mediatek/clk-mt6797-venc.c b/drivers/clk/mediatek/clk-mt6797-venc.c
new file mode 100644
index 000000000000..e73d51756f13
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt6797-venc.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2017 MediaTek Inc.
+ * Author: Kevin Chen <kevin-cw.chen@mediatek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+
+#include "clk-mtk.h"
+#include "clk-gate.h"
+
+#include <dt-bindings/clock/mt6797-clk.h>
+
+static const struct mtk_gate_regs venc_cg_regs = {
+ .set_ofs = 0x0004,
+ .clr_ofs = 0x0008,
+ .sta_ofs = 0x0000,
+};
+
+#define GATE_VENC(_id, _name, _parent, _shift) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &venc_cg_regs, \
+ .shift = _shift, \
+ .ops = &mtk_clk_gate_ops_setclr_inv, \
+ }
+
+static const struct mtk_gate venc_clks[] = {
+ GATE_VENC(CLK_VENC_0, "venc_0", "mm_sel", 0),
+ GATE_VENC(CLK_VENC_1, "venc_1", "venc_sel", 4),
+ GATE_VENC(CLK_VENC_2, "venc_2", "venc_sel", 8),
+ GATE_VENC(CLK_VENC_3, "venc_3", "venc_sel", 12),
+};
+
+static const struct of_device_id of_match_clk_mt6797_venc[] = {
+ { .compatible = "mediatek,mt6797-vencsys", },
+ {}
+};
+
+static int clk_mt6797_venc_probe(struct platform_device *pdev)
+{
+ struct clk_onecell_data *clk_data;
+ int r;
+ struct device_node *node = pdev->dev.of_node;
+
+ clk_data = mtk_alloc_clk_data(CLK_VENC_NR);
+
+ mtk_clk_register_gates(node, venc_clks, ARRAY_SIZE(venc_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);
+
+ return r;
+}
+
+static struct platform_driver clk_mt6797_venc_drv = {
+ .probe = clk_mt6797_venc_probe,
+ .driver = {
+ .name = "clk-mt6797-venc",
+ .of_match_table = of_match_clk_mt6797_venc,
+ },
+};
+
+builtin_platform_driver(clk_mt6797_venc_drv);