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

From: Garmin Chang (張家銘)
Date: Thu Mar 09 2023 - 00:49:37 EST

On Fri, 2023-02-03 at 11:49 +0100, AngeloGioacchino Del Regno wrote:
> Il 03/02/23 08:19, Chen-Yu Tsai ha scritto:
> > On Thu, Jan 19, 2023 at 8:54 PM Garmin.Chang <
> > Garmin.Chang@xxxxxxxxxxxx> wrote:
> > >
> > > 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 | 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@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(node, vdo0_clks,
> > > ARRAY_SIZE(vdo0_clks), clk_data);
> >
> > This API was changed. Please rebase onto the latest -next and
> > update.
> >
> > Angelo (CC-ed) also mentioned a new simple probe variant for non-DT
> > clock drivers is being developed. He didn't mention a timeline
> > though.
>
> I've already tested the new simple probe variant for non-DT clock
> drivers and
> it works fine on MT8173, MT8192 and MT8195.
>
> Timeline - I should be able to push the part 2 series next week,
> which will include
> more conversion to simple probe and almost all clock drivers changed
> to allow
> building as modules.
>
> Cheers,
> Angelo
>
Thank you for your suggestions.
When the new simple probe variant and building as modules are ready, I
will rebase latest-next and update it.