[PATCH v5 12/19] clk: mediatek: Add MT8188 vdosys0 clock support

[Garmin.Chang <Garmin.Chang@mediatek.com>]

Add MT8188 vdosys0 clock controller which provides clock gate
control in video system. This is integrated with mtk-mmsys
driver which will populate device by platform_device_register_data
to start vdosys clock driver.

Signed-off-by: Garmin.Chang <Garmin.Chang@mediatek.com>
---
 drivers/clk/mediatek/Makefile          |   3 +-
 drivers/clk/mediatek/clk-mt8188-vdo0.c | 134 +++++++++++++++++++++++++
 2 files changed, 136 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clk/mediatek/clk-mt8188-vdo0.c

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index 7d09e9fc6538..df78c0777fef 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -86,7 +86,8 @@ obj-$(CONFIG_COMMON_CLK_MT8186) += clk-mt8186-mcu.o clk-mt8186-topckgen.o clk-mt
 obj-$(CONFIG_COMMON_CLK_MT8188) += clk-mt8188-apmixedsys.o clk-mt8188-topckgen.o \
 				   clk-mt8188-peri_ao.o clk-mt8188-infra_ao.o \
 				   clk-mt8188-cam.o clk-mt8188-ccu.o clk-mt8188-img.o \
-				   clk-mt8188-ipe.o clk-mt8188-mfg.o clk-mt8188-vdec.o
+				   clk-mt8188-ipe.o clk-mt8188-mfg.o clk-mt8188-vdec.o \
+				   clk-mt8188-vdo0.o
 obj-$(CONFIG_COMMON_CLK_MT8192) += clk-mt8192.o
 obj-$(CONFIG_COMMON_CLK_MT8192_AUDSYS) += clk-mt8192-aud.o
 obj-$(CONFIG_COMMON_CLK_MT8192_CAMSYS) += clk-mt8192-cam.o
diff --git a/drivers/clk/mediatek/clk-mt8188-vdo0.c b/drivers/clk/mediatek/clk-mt8188-vdo0.c
new file mode 100644
index 000000000000..30dd64374ace
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8188-vdo0.c
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Garmin Chang <garmin.chang@mediatek.com>
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/clock/mediatek,mt8188-clk.h>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+
+static const struct mtk_gate_regs vdo0_0_cg_regs = {
+	.set_ofs = 0x104,
+	.clr_ofs = 0x108,
+	.sta_ofs = 0x100,
+};
+
+static const struct mtk_gate_regs vdo0_1_cg_regs = {
+	.set_ofs = 0x114,
+	.clr_ofs = 0x118,
+	.sta_ofs = 0x110,
+};
+
+static const struct mtk_gate_regs vdo0_2_cg_regs = {
+	.set_ofs = 0x124,
+	.clr_ofs = 0x128,
+	.sta_ofs = 0x120,
+};
+
+#define GATE_VDO0_0(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &vdo0_0_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
+
+#define GATE_VDO0_1(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &vdo0_1_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
+
+#define GATE_VDO0_2(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &vdo0_2_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
+
+#define GATE_VDO0_2_FLAGS(_id, _name, _parent, _shift, _flags)		\
+	GATE_MTK_FLAGS(_id, _name, _parent, &vdo0_2_cg_regs, _shift,	\
+	&mtk_clk_gate_ops_setclr, _flags)
+
+static const struct mtk_gate vdo0_clks[] = {
+	/* VDO0_0 */
+	GATE_VDO0_0(CLK_VDO0_DISP_OVL0, "vdo0_disp_ovl0", "top_vpp", 0),
+	GATE_VDO0_0(CLK_VDO0_FAKE_ENG0, "vdo0_fake_eng0", "top_vpp", 2),
+	GATE_VDO0_0(CLK_VDO0_DISP_CCORR0, "vdo0_disp_ccorr0", "top_vpp", 4),
+	GATE_VDO0_0(CLK_VDO0_DISP_MUTEX0, "vdo0_disp_mutex0", "top_vpp", 6),
+	GATE_VDO0_0(CLK_VDO0_DISP_GAMMA0, "vdo0_disp_gamma0", "top_vpp", 8),
+	GATE_VDO0_0(CLK_VDO0_DISP_DITHER0, "vdo0_disp_dither0", "top_vpp", 10),
+	GATE_VDO0_0(CLK_VDO0_DISP_WDMA0, "vdo0_disp_wdma0", "top_vpp", 17),
+	GATE_VDO0_0(CLK_VDO0_DISP_RDMA0, "vdo0_disp_rdma0", "top_vpp", 19),
+	GATE_VDO0_0(CLK_VDO0_DSI0, "vdo0_dsi0", "top_vpp", 21),
+	GATE_VDO0_0(CLK_VDO0_DSI1, "vdo0_dsi1", "top_vpp", 22),
+	GATE_VDO0_0(CLK_VDO0_DSC_WRAP0, "vdo0_dsc_wrap0", "top_vpp", 23),
+	GATE_VDO0_0(CLK_VDO0_VPP_MERGE0, "vdo0_vpp_merge0", "top_vpp", 24),
+	GATE_VDO0_0(CLK_VDO0_DP_INTF0, "vdo0_dp_intf0", "top_vpp", 25),
+	GATE_VDO0_0(CLK_VDO0_DISP_AAL0, "vdo0_disp_aal0", "top_vpp", 26),
+	GATE_VDO0_0(CLK_VDO0_INLINEROT0, "vdo0_inlinerot0", "top_vpp", 27),
+	GATE_VDO0_0(CLK_VDO0_APB_BUS, "vdo0_apb_bus", "top_vpp", 28),
+	GATE_VDO0_0(CLK_VDO0_DISP_COLOR0, "vdo0_disp_color0", "top_vpp", 29),
+	GATE_VDO0_0(CLK_VDO0_MDP_WROT0, "vdo0_mdp_wrot0", "top_vpp", 30),
+	GATE_VDO0_0(CLK_VDO0_DISP_RSZ0, "vdo0_disp_rsz0", "top_vpp", 31),
+	/* VDO0_1 */
+	GATE_VDO0_1(CLK_VDO0_DISP_POSTMASK0, "vdo0_disp_postmask0", "top_vpp", 0),
+	GATE_VDO0_1(CLK_VDO0_FAKE_ENG1, "vdo0_fake_eng1", "top_vpp", 1),
+	GATE_VDO0_1(CLK_VDO0_DL_ASYNC2, "vdo0_dl_async2", "top_vpp", 5),
+	GATE_VDO0_1(CLK_VDO0_DL_RELAY3, "vdo0_dl_relay3", "top_vpp", 6),
+	GATE_VDO0_1(CLK_VDO0_DL_RELAY4, "vdo0_dl_relay4", "top_vpp", 7),
+	GATE_VDO0_1(CLK_VDO0_SMI_GALS, "vdo0_smi_gals", "top_vpp", 10),
+	GATE_VDO0_1(CLK_VDO0_SMI_COMMON, "vdo0_smi_common", "top_vpp", 11),
+	GATE_VDO0_1(CLK_VDO0_SMI_EMI, "vdo0_smi_emi", "top_vpp", 12),
+	GATE_VDO0_1(CLK_VDO0_SMI_IOMMU, "vdo0_smi_iommu", "top_vpp", 13),
+	GATE_VDO0_1(CLK_VDO0_SMI_LARB, "vdo0_smi_larb", "top_vpp", 14),
+	GATE_VDO0_1(CLK_VDO0_SMI_RSI, "vdo0_smi_rsi", "top_vpp", 15),
+	/* VDO0_2 */
+	GATE_VDO0_2(CLK_VDO0_DSI0_DSI, "vdo0_dsi0_dsi", "top_dsi_occ", 0),
+	GATE_VDO0_2(CLK_VDO0_DSI1_DSI, "vdo0_dsi1_dsi", "top_dsi_occ", 8),
+	GATE_VDO0_2_FLAGS(CLK_VDO0_DP_INTF0_DP_INTF, "vdo0_dp_intf0_dp_intf",
+		"top_edp", 16, CLK_SET_RATE_PARENT),
+};
+
+static int clk_mt8188_vdo0_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *node = dev->parent->of_node;
+	struct clk_hw_onecell_data *clk_data;
+	int r;
+
+	clk_data = mtk_alloc_clk_data(CLK_VDO0_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
+
+	r = mtk_clk_register_gates(node, vdo0_clks, ARRAY_SIZE(vdo0_clks), clk_data);
+	if (r)
+		goto free_vdo0_data;
+
+	r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
+	if (r)
+		goto unregister_gates;
+
+	platform_set_drvdata(pdev, clk_data);
+
+	return r;
+
+unregister_gates:
+	mtk_clk_unregister_gates(vdo0_clks, ARRAY_SIZE(vdo0_clks), clk_data);
+free_vdo0_data:
+	mtk_free_clk_data(clk_data);
+	return r;
+}
+
+static int clk_mt8188_vdo0_remove(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *node = dev->parent->of_node;
+	struct clk_hw_onecell_data *clk_data = platform_get_drvdata(pdev);
+
+	of_clk_del_provider(node);
+	mtk_clk_unregister_gates(vdo0_clks, ARRAY_SIZE(vdo0_clks), clk_data);
+	mtk_free_clk_data(clk_data);
+
+	return 0;
+}
+
+static struct platform_driver clk_mt8188_vdo0_drv = {
+	.probe = clk_mt8188_vdo0_probe,
+	.remove = clk_mt8188_vdo0_remove,
+	.driver = {
+		.name = "clk-mt8188-vdo0",
+	},
+};
+builtin_platform_driver(clk_mt8188_vdo0_drv);
-- 
2.18.0