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Message-ID: <CAGXv+5Fysy4iCvHEXWtf5oXCHkaKezPqcrGd8QzhnaTrYdyecA@mail.gmail.com>
Date: Fri, 3 Feb 2023 15:19:49 +0800
From: Chen-Yu Tsai <wenst@...omium.org>
To: "Garmin.Chang" <Garmin.Chang@...iatek.com>
Cc: Matthias Brugger <matthias.bgg@...il.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Richard Cochran <richardcochran@...il.com>,
Project_Global_Chrome_Upstream_Group@...iatek.com,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
linux-clk@...r.kernel.org, netdev@...r.kernel.org,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH v5 12/19] clk: mediatek: Add MT8188 vdosys0 clock support
On Thu, Jan 19, 2023 at 8:54 PM Garmin.Chang <Garmin.Chang@...iatek.com> 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@...iatek.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@...iatek.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);
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.
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