clk: mediatek: Add MT6779 clock support

Add MT6779 clock support, include topckgen, apmixedsys,
infracfg, and subsystem clocks.

Signed-off-by: mtk01761 <wendell.lin@mediatek.com>
Link: https://lkml.kernel.org/r/1566206502-4347-11-git-send-email-mars.cheng@mediatek.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

1 files changed, 67 insertions, 0 deletions

diff --git a/drivers/clk/mediatek/clk-mt6779-vdec.c b/drivers/clk/mediatek/clk-mt6779-vdec.c
new file mode 100644
index 000000000000..1900da2586a1
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt6779-vdec.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 MediaTek Inc.
+ * Author: Wendell Lin <wendell.lin@mediatek.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+
+#include "clk-mtk.h"
+#include "clk-gate.h"
+
+#include <dt-bindings/clock/mt6779-clk.h>
+
+static const struct mtk_gate_regs vdec0_cg_regs = {
+	.set_ofs = 0x0000,
+	.clr_ofs = 0x0004,
+	.sta_ofs = 0x0000,
+};
+
+static const struct mtk_gate_regs vdec1_cg_regs = {
+	.set_ofs = 0x0008,
+	.clr_ofs = 0x000c,
+	.sta_ofs = 0x0008,
+};
+
+#define GATE_VDEC0_I(_id, _name, _parent, _shift)		\
+	GATE_MTK(_id, _name, _parent, &vdec0_cg_regs, _shift,	\
+		&mtk_clk_gate_ops_setclr_inv)
+#define GATE_VDEC1_I(_id, _name, _parent, _shift)		\
+	GATE_MTK(_id, _name, _parent, &vdec1_cg_regs, _shift,	\
+		&mtk_clk_gate_ops_setclr_inv)
+
+static const struct mtk_gate vdec_clks[] = {
+	/* VDEC0 */
+	GATE_VDEC0_I(CLK_VDEC_VDEC, "vdec_cken", "vdec_sel", 0),
+	/* VDEC1 */
+	GATE_VDEC1_I(CLK_VDEC_LARB1, "vdec_larb1_cken", "vdec_sel", 0),
+};
+
+static const struct of_device_id of_match_clk_mt6779_vdec[] = {
+	{ .compatible = "mediatek,mt6779-vdecsys", },
+	{}
+};
+
+static int clk_mt6779_vdec_probe(struct platform_device *pdev)
+{
+	struct clk_onecell_data *clk_data;
+	struct device_node *node = pdev->dev.of_node;
+
+	clk_data = mtk_alloc_clk_data(CLK_VDEC_GCON_NR_CLK);
+
+	mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks),
+			       clk_data);
+
+	return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+}
+
+static struct platform_driver clk_mt6779_vdec_drv = {
+	.probe = clk_mt6779_vdec_probe,
+	.driver = {
+		.name = "clk-mt6779-vdec",
+		.of_match_table = of_match_clk_mt6779_vdec,
+	},
+};
+
+builtin_platform_driver(clk_mt6779_vdec_drv);