clk: mediatek: Add MT8195 vdecsys clock support

Add MT8195 vdec clock controllers which provide clock gate
control for video decoder.

Signed-off-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20210914021633.26377-17-chun-jie.chen@mediatek.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

1 files changed, 104 insertions, 0 deletions

diff --git a/drivers/clk/mediatek/clk-mt8195-vdec.c b/drivers/clk/mediatek/clk-mt8195-vdec.c
new file mode 100644
index 000000000000..a1df04f42a90
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8195-vdec.c
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2021 MediaTek Inc.
+// Author: Chun-Jie Chen <chun-jie.chen@mediatek.com>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+
+#include <dt-bindings/clock/mt8195-clk.h>
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+
+static const struct mtk_gate_regs vdec0_cg_regs = {
+	.set_ofs = 0x0,
+	.clr_ofs = 0x4,
+	.sta_ofs = 0x0,
+};
+
+static const struct mtk_gate_regs vdec1_cg_regs = {
+	.set_ofs = 0x200,
+	.clr_ofs = 0x204,
+	.sta_ofs = 0x200,
+};
+
+static const struct mtk_gate_regs vdec2_cg_regs = {
+	.set_ofs = 0x8,
+	.clr_ofs = 0xc,
+	.sta_ofs = 0x8,
+};
+
+#define GATE_VDEC0(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &vdec0_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv)
+
+#define GATE_VDEC1(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &vdec1_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv)
+
+#define GATE_VDEC2(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &vdec2_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv)
+
+static const struct mtk_gate vdec_clks[] = {
+	/* VDEC0 */
+	GATE_VDEC0(CLK_VDEC_VDEC, "vdec_vdec", "top_vdec", 0),
+	/* VDEC1 */
+	GATE_VDEC1(CLK_VDEC_LAT, "vdec_lat", "top_vdec", 0),
+	/* VDEC2 */
+	GATE_VDEC2(CLK_VDEC_LARB1, "vdec_larb1", "top_vdec", 0),
+};
+
+static const struct mtk_gate vdec_core1_clks[] = {
+	/* VDEC0 */
+	GATE_VDEC0(CLK_VDEC_CORE1_VDEC, "vdec_core1_vdec", "top_vdec", 0),
+	/* VDEC1 */
+	GATE_VDEC1(CLK_VDEC_CORE1_LAT, "vdec_core1_lat", "top_vdec", 0),
+	/* VDEC2 */
+	GATE_VDEC2(CLK_VDEC_CORE1_LARB1, "vdec_core1_larb1", "top_vdec", 0),
+};
+
+static const struct mtk_gate vdec_soc_clks[] = {
+	/* VDEC0 */
+	GATE_VDEC0(CLK_VDEC_SOC_VDEC, "vdec_soc_vdec", "top_vdec", 0),
+	/* VDEC1 */
+	GATE_VDEC1(CLK_VDEC_SOC_LAT, "vdec_soc_lat", "top_vdec", 0),
+	/* VDEC2 */
+	GATE_VDEC2(CLK_VDEC_SOC_LARB1, "vdec_soc_larb1", "top_vdec", 0),
+};
+
+static const struct mtk_clk_desc vdec_desc = {
+	.clks = vdec_clks,
+	.num_clks = ARRAY_SIZE(vdec_clks),
+};
+
+static const struct mtk_clk_desc vdec_core1_desc = {
+	.clks = vdec_core1_clks,
+	.num_clks = ARRAY_SIZE(vdec_core1_clks),
+};
+
+static const struct mtk_clk_desc vdec_soc_desc = {
+	.clks = vdec_soc_clks,
+	.num_clks = ARRAY_SIZE(vdec_soc_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8195_vdec[] = {
+	{
+		.compatible = "mediatek,mt8195-vdecsys",
+		.data = &vdec_desc,
+	}, {
+		.compatible = "mediatek,mt8195-vdecsys_core1",
+		.data = &vdec_core1_desc,
+	}, {
+		.compatible = "mediatek,mt8195-vdecsys_soc",
+		.data = &vdec_soc_desc,
+	}, {
+		/* sentinel */
+	}
+};
+
+static struct platform_driver clk_mt8195_vdec_drv = {
+	.probe = mtk_clk_simple_probe,
+	.driver = {
+		.name = "clk-mt8195-vdec",
+		.of_match_table = of_match_clk_mt8195_vdec,
+	},
+};
+builtin_platform_driver(clk_mt8195_vdec_drv);