Re: [PATCH v5 14/19] clk: mediatek: Add MT8188 vencsys clock support

[Chen-Yu Tsai]

On Thu, Jan 19, 2023 at 8:55 PM Garmin.Chang <Garmin.Chang@xxxxxxxxxxxx> wrote:
>
> Add MT8188 vencsys clock controllers which provide clock gate
> control for video encoder.
>
> Signed-off-by: Garmin.Chang <Garmin.Chang@xxxxxxxxxxxx>
> ---
>  drivers/clk/mediatek/Makefile          |  2 +-
>  drivers/clk/mediatek/clk-mt8188-venc.c | 52 ++++++++++++++++++++++++++
>  2 files changed, 53 insertions(+), 1 deletion(-)
>  create mode 100644 drivers/clk/mediatek/clk-mt8188-venc.c
>
> diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
> index c654f4288e09..22a3840160fc 100644
> --- a/drivers/clk/mediatek/Makefile
> +++ b/drivers/clk/mediatek/Makefile
> @@ -87,7 +87,7 @@ obj-$(CONFIG_COMMON_CLK_MT8188) += clk-mt8188-apmixedsys.o clk-mt8188-topckgen.o
>                                    clk-mt8188-peri_ao.o clk-mt8188-infra_ao.o \
>                                    clk-mt8188-cam.o clk-mt8188-ccu.o clk-mt8188-img.o \
>                                    clk-mt8188-ipe.o clk-mt8188-mfg.o clk-mt8188-vdec.o \
> -                                  clk-mt8188-vdo0.o clk-mt8188-vdo1.o
> +                                  clk-mt8188-vdo0.o clk-mt8188-vdo1.o clk-mt8188-venc.o
>  obj-$(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-venc.c b/drivers/clk/mediatek/clk-mt8188-venc.c
> new file mode 100644
> index 000000000000..375ef99e2349
> --- /dev/null
> +++ b/drivers/clk/mediatek/clk-mt8188-venc.c
> @@ -0,0 +1,52 @@
> +// 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 ven1_cg_regs = {

Like the vdecsys patch, please change "ven" to "venc" to be consistent
with usages elsewhere.

> +       .set_ofs = 0x4,
> +       .clr_ofs = 0x8,
> +       .sta_ofs = 0x0,
> +};
> +
> +#define GATE_VEN1(_id, _name, _parent, _shift)                 \
> +       GATE_MTK(_id, _name, _parent, &ven1_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv)
> +
> +static const struct mtk_gate ven1_clks[] = {
> +       GATE_VEN1(CLK_VEN1_CKE0_LARB, "ven1_cke0_larb", "top_venc", 0),
> +       GATE_VEN1(CLK_VEN1_CKE1_VENC, "ven1_cke1_venc", "top_venc", 4),
> +       GATE_VEN1(CLK_VEN1_CKE2_JPGENC, "ven1_cke2_jpgenc", "top_venc", 8),
> +       GATE_VEN1(CLK_VEN1_CKE3_JPGDEC, "ven1_cke3_jpgdec", "top_venc", 12),
> +       GATE_VEN1(CLK_VEN1_CKE4_JPGDEC_C1, "ven1_cke4_jpgdec_c1", "top_venc", 16),
> +       GATE_VEN1(CLK_VEN1_CKE5_GALS, "ven1_cke5_gals", "top_venc", 28),
> +       GATE_VEN1(CLK_VEN1_CKE6_GALS_SRAM, "ven1_cke6_gals_sram", "top_venc", 31),

Is ckeN in both the macro name and clock name necessary? We don't really
care about the index.

ChenYu

> +};
> +
> +static const struct mtk_clk_desc ven1_desc = {
> +       .clks = ven1_clks,
> +       .num_clks = ARRAY_SIZE(ven1_clks),
> +};
> +
> +static const struct of_device_id of_match_clk_mt8188_ven1[] = {
> +       { .compatible = "mediatek,mt8188-vencsys", .data = &ven1_desc },
> +       { /* sentinel */ }
> +};
> +
> +static struct platform_driver clk_mt8188_ven1_drv = {
> +       .probe = mtk_clk_simple_probe,
> +       .remove = mtk_clk_simple_remove,
> +       .driver = {
> +               .name = "clk-mt8188-ven1",
> +               .of_match_table = of_match_clk_mt8188_ven1,
> +       },
> +};
> +
> +builtin_platform_driver(clk_mt8188_ven1_drv);
> +MODULE_LICENSE("GPL");
> --
> 2.18.0
>
>