Re: [PATCH v6 12/19] clk: mediatek: Add MT8188 vdosys0 clock support

From: AngeloGioacchino Del Regno
Date: Tue Mar 14 2023 - 05:14:41 EST

Il 09/03/23 14:54, Garmin.Chang ha scritto:
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@xxxxxxxxxxxx>
---
drivers/clk/mediatek/Makefile | 3 +-
drivers/clk/mediatek/clk-mt8188-vdo0.c | 135 +++++++++++++++++++++++++
2 files changed, 137 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 bf8e50b54bb4..fca66c37cecc 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -94,7 +94,8 @@ 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..f649f603aab7
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8188-vdo0.c
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Garmin Chang <garmin.chang@xxxxxxxxxxxx>
+
+#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(&pdev->dev, 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 const struct mtk_clk_desc vdo0_desc = {
.clks ...
.num_clks ....
};

static const struct platform_device_id clk_mt8188_vdo0_id_table[] = {
{ .name = "clk-mt8188-vdo0", .driver_data = (kernel_ulong_T)&vdo0_desc },
{ /* sentinel */ }
};

+static struct platform_driver clk_mt8188_vdo0_drv = {
+ .probe = clk_mt8188_vdo0_probe,
+ .remove = clk_mt8188_vdo0_remove,

.probe = mtk_clk_pdev_probe,
.remove = mtk_clk_pdev_remove,

+ .driver = {
+ .name = "clk-mt8188-vdo0",
+ },

.id_table = clk_mt8188_vdo0_id_table,

+};
+builtin_platform_driver(clk_mt8188_vdo0_drv);

module_platform_driver and MODULE_LICENSE.

Same for VDO1, VPP0, VPP1.

Regards,
Angelo