Hi Angelo,
Thanks for the review.
On Fri, 2021-10-15 at 09:49 +0200, AngeloGioacchino Del Regno wrote:
> > Add ovl_adaptor driver for MT8195.
> > Ovl_adaptor is an encapsulated module and designed for simplified
> > DRM control flow. This module is composed of 8 RDMAs, 4 MERGEs and
> > an ETHDR. Two RDMAs merge into one layer, so this module support 4
> > layers.
> >
> > Signed-off-by: Nancy.Lin <nancy....@mediatek.com>
> > ---
> > drivers/gpu/drm/mediatek/Makefile | 1 +
> > drivers/gpu/drm/mediatek/mtk_disp_drv.h | 16 +
> > .../gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 498
> > ++++++++++++++++++
> > drivers/gpu/drm/mediatek/mtk_drm_drv.h | 1 +
> > 4 files changed, 516 insertions(+)
> > create mode 100644
> > drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
> >
> > diff --git a/drivers/gpu/drm/mediatek/Makefile
> > b/drivers/gpu/drm/mediatek/Makefile
> > index fb158a1e7f06..3abd27d7c91d 100644
> > --- a/drivers/gpu/drm/mediatek/Makefile
> > +++ b/drivers/gpu/drm/mediatek/Makefile
> > @@ -6,6 +6,7 @@ mediatek-drm-y := mtk_disp_aal.o \
> > mtk_disp_gamma.o \
> > mtk_disp_merge.o \
> > mtk_disp_ovl.o \
> > + mtk_disp_ovl_adaptor.o \
> > mtk_disp_rdma.o \
> > mtk_drm_crtc.o \
> > mtk_drm_ddp_comp.o \
> > diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > index 2446ad0a4977..6a4f4c42aedb 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > @@ -113,6 +113,22 @@ void mtk_rdma_enable_vblank(struct device
> > *dev,
> > void *vblank_cb_data);
> > void mtk_rdma_disable_vblank(struct device *dev);
> >
> > +int mtk_ovl_adaptor_clk_enable(struct device *dev);
> > +void mtk_ovl_adaptor_clk_disable(struct device *dev);
> > +void mtk_ovl_adaptor_config(struct device *dev, unsigned int w,
> > + unsigned int h, unsigned int vrefresh,
> > + unsigned int bpc, struct cmdq_pkt
> > *cmdq_pkt);
> > +void mtk_ovl_adaptor_layer_config(struct device *dev, unsigned int
> > idx,
> > + struct mtk_plane_state *state,
> > + struct cmdq_pkt *cmdq_pkt);
> > +void mtk_ovl_adaptor_enable_vblank(struct device *dev,
> > + void (*vblank_cb)(void *),
> > + void *vblank_cb_data);
> > +void mtk_ovl_adaptor_disable_vblank(struct device *dev);
> > +void mtk_ovl_adaptor_start(struct device *dev);
> > +void mtk_ovl_adaptor_stop(struct device *dev);
> > +unsigned int mtk_ovl_adaptor_layer_nr(struct device *dev);
> > +
> > int mtk_mdp_rdma_clk_enable(struct device *dev);
> > void mtk_mdp_rdma_clk_disable(struct device *dev);
> > void mtk_mdp_rdma_start(struct device *dev, struct cmdq_pkt
> > *cmdq_pkt);
> > diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
> > b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
> > new file mode 100644
> > index 000000000000..bfb5a9d29c26
> > --- /dev/null
> > +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
> > @@ -0,0 +1,498 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/*
> > + * Copyright (c) 2021 MediaTek Inc.
> > + */
> > +
> > +#include <drm/drm_fourcc.h>
> > +#include <drm/drm_of.h>
> > +#include <linux/clk.h>
> > +#include <linux/component.h>
> > +#include <linux/of_device.h>
> > +#include <linux/of_address.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/pm_runtime.h>
> > +#include <linux/reset.h>
> > +#include <linux/soc/mediatek/mtk-mmsys.h>
> > +#include <linux/soc/mediatek/mtk-cmdq.h>
> > +
> > +#include "mtk_drm_drv.h"
> > +#include "mtk_drm_crtc.h"
> > +#include "mtk_drm_ddp_comp.h"
> > +#include "mtk_disp_drv.h"
> > +#include "mtk_ethdr.h"
> > +
> > +#define MTK_OVL_ADAPTOR_RDMA_MAX_WIDTH 1920
> > +#define MTK_OVL_ADAPTOR_LAYER_NUM 4
> > +
> > +enum mtk_ovl_adaptor_comp_type {
> > + OVL_ADAPTOR_TYPE_RDMA = 0,
> > + OVL_ADAPTOR_TYPE_MERGE,
> > + OVL_ADAPTOR_TYPE_ETHDR,
> > + OVL_ADAPTOR_TYPE_NUM,
> > +};
> > +
> > +enum mtk_ovl_adaptor_comp_id {
> > + OVL_ADAPTOR_MDP_RDMA0,
> > + OVL_ADAPTOR_MDP_RDMA1,
> > + OVL_ADAPTOR_MDP_RDMA2,
> > + OVL_ADAPTOR_MDP_RDMA3,
> > + OVL_ADAPTOR_MDP_RDMA4,
> > + OVL_ADAPTOR_MDP_RDMA5,
> > + OVL_ADAPTOR_MDP_RDMA6,
> > + OVL_ADAPTOR_MDP_RDMA7,
> > + OVL_ADAPTOR_MERGE0,
> > + OVL_ADAPTOR_MERGE1,
> > + OVL_ADAPTOR_MERGE2,
> > + OVL_ADAPTOR_MERGE3,
> > + OVL_ADAPTOR_ETHDR0,
> > + OVL_ADAPTOR_ID_MAX
> > +};
> > +
> > +struct ovl_adaptor_comp_match {
> > + enum mtk_ovl_adaptor_comp_type type;
> > + int alias_id;
> > +};
> > +
> > +struct mtk_disp_ovl_adaptor {
> > + struct device *ovl_adaptor_comp[OVL_ADAPTOR_ID_MAX];
> > + struct device *mmsys_dev;
> > +};
> > +
> > +static const char * const ovl_adaptor_comp_str[] = {
> > + "OVL_ADAPTOR_MDP_RDMA0",
> > + "OVL_ADAPTOR_MDP_RDMA1",
> > + "OVL_ADAPTOR_MDP_RDMA2",
> > + "OVL_ADAPTOR_MDP_RDMA3",
> > + "OVL_ADAPTOR_MDP_RDMA4",
> > + "OVL_ADAPTOR_MDP_RDMA5",
> > + "OVL_ADAPTOR_MDP_RDMA6",
> > + "OVL_ADAPTOR_MDP_RDMA7",
> > + "OVL_ADAPTOR_MERGE0",
> > + "OVL_ADAPTOR_MERGE1",
> > + "OVL_ADAPTOR_MERGE2",
> > + "OVL_ADAPTOR_MERGE3",
> > + "OVL_ADAPTOR_ETHDR",
> > + "OVL_ADAPTOR_ID_MAX"
> > +};
> > +
> > +static const char * const private_comp_stem[OVL_ADAPTOR_TYPE_NUM]
> > = {
> > + [OVL_ADAPTOR_TYPE_RDMA] = "vdo1_rdma",
> > + [OVL_ADAPTOR_TYPE_MERGE] = "merge",
> > + [OVL_ADAPTOR_TYPE_ETHDR] = "ethdr",
> > +};
> > +
> > +static const struct ovl_adaptor_comp_match
> > comp_matches[OVL_ADAPTOR_ID_MAX] = {
> > + [OVL_ADAPTOR_MDP_RDMA0] = { OVL_ADAPTOR_TYPE_RDMA, 0 },
> > + [OVL_ADAPTOR_MDP_RDMA1] = { OVL_ADAPTOR_TYPE_RDMA, 1 },
> > + [OVL_ADAPTOR_MDP_RDMA2] = { OVL_ADAPTOR_TYPE_RDMA, 2 },
> > + [OVL_ADAPTOR_MDP_RDMA3] = { OVL_ADAPTOR_TYPE_RDMA, 3 },
> > + [OVL_ADAPTOR_MDP_RDMA4] = { OVL_ADAPTOR_TYPE_RDMA, 4 },
> > + [OVL_ADAPTOR_MDP_RDMA5] = { OVL_ADAPTOR_TYPE_RDMA, 5 },
> > + [OVL_ADAPTOR_MDP_RDMA6] = { OVL_ADAPTOR_TYPE_RDMA, 6 },
> > + [OVL_ADAPTOR_MDP_RDMA7] = { OVL_ADAPTOR_TYPE_RDMA, 7 },
> > + [OVL_ADAPTOR_MERGE0] = { OVL_ADAPTOR_TYPE_MERGE, 1 },
> > + [OVL_ADAPTOR_MERGE1] = { OVL_ADAPTOR_TYPE_MERGE, 2 },
> > + [OVL_ADAPTOR_MERGE2] = { OVL_ADAPTOR_TYPE_MERGE, 3 },
> > + [OVL_ADAPTOR_MERGE3] = { OVL_ADAPTOR_TYPE_MERGE, 4 },
> > + [OVL_ADAPTOR_ETHDR0] = { OVL_ADAPTOR_TYPE_ETHDR, 0 },
> > +};
>
> nit: can you please fix the indentation here?
>
OK, I will fix it.
> > +
> > +void mtk_ovl_adaptor_layer_config(struct device *dev, unsigned int
> > idx,
> > + struct mtk_plane_state *state,
> > + struct cmdq_pkt *cmdq_pkt)
> > +{
> > + struct mtk_disp_ovl_adaptor *ovl_adaptor =
> > dev_get_drvdata(dev);
> > + struct mtk_plane_pending_state *pending = &state->pending;
> > + struct mtk_mdp_rdma_cfg rdma_config = {0};
> > + struct device *rdma_l;
> > + struct device *rdma_r;
> > + struct device *merge;
> > + struct device *ethdr;
> > + const struct drm_format_info *fmt_info =
> > drm_format_info(pending->format);
> > + bool use_dual_pipe = false;
> > + unsigned int l_w = 0;
> > + unsigned int r_w = 0;
> > +
> > + dev_dbg(dev, "%s+ idx:%d, enable:%d, fmt:0x%x\n", __func__,
> > idx,
> > + pending->enable, pending->format);
> > + dev_dbg(dev, "addr 0x%lx, fb w:%d, {%d,%d,%d,%d}\n",
> > + pending->addr, (pending->pitch / fmt_info->cpp[0]),
> > + pending->x, pending->y, pending->width, pending-
> > >height);
> > +
> > + rdma_l = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 +
> > 2 * idx];
> > + rdma_r = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 +
> > 2 * idx + 1];
> > + merge = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MERGE0 +
> > idx];
> > + ethdr = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0];
> > +
> > + if (!pending->enable) {
> > + mtk_merge_disable(merge, cmdq_pkt);
> > + mtk_mdp_rdma_stop(rdma_l, cmdq_pkt);
> > + mtk_mdp_rdma_stop(rdma_r, cmdq_pkt);
> > + mtk_ethdr_layer_config(ethdr, idx, state, cmdq_pkt);
> > + return;
> > + }
> > +
> > + /* ETHDR is in 1T2P domain, width needs to be 2 pixels align */
> > + pending->width = ALIGN_DOWN(pending->width, 2);
> > +
> > + if (pending->width > MTK_OVL_ADAPTOR_RDMA_MAX_WIDTH)
> > + use_dual_pipe = true;
> > +
> > + if (use_dual_pipe) {
> > + l_w = (pending->width / 2) + ((pending->width / 2) %
> > 2);
> > + r_w = pending->width - l_w;
> > + } else {
> > + l_w = pending->width;
> > + }
> > + mtk_merge_advance_config(merge, l_w, r_w, pending->height, 0,
> > 0, cmdq_pkt);
> > + mtk_mmsys_ddp_config(ovl_adaptor->mmsys_dev,
> > MMSYS_CONFIG_MERGE_ASYNC_WIDTH,
> > + idx, pending->width / 2, cmdq_pkt);
> > + mtk_mmsys_ddp_config(ovl_adaptor->mmsys_dev,
> > MMSYS_CONFIG_MERGE_ASYNC_HEIGHT,
> > + idx, pending->height, cmdq_pkt);
> > +
> > + rdma_config.width = l_w;
> > + rdma_config.height = pending->height;
> > + rdma_config.addr0 = pending->addr;
> > + rdma_config.pitch = pending->pitch;
> > + rdma_config.fmt = pending->format;
> > + mtk_mdp_rdma_config(rdma_l, &rdma_config, cmdq_pkt);
> > +
> > + if (use_dual_pipe) {
> > + rdma_config.x_left = l_w;
> > + rdma_config.width = r_w;
> > + mtk_mdp_rdma_config(rdma_r, &rdma_config, cmdq_pkt);
> > + }
> > +
> > + mtk_merge_enable(merge, cmdq_pkt);
> > + mtk_merge_unmute(merge, cmdq_pkt);
> > +
> > + mtk_mdp_rdma_start(rdma_l, cmdq_pkt);
> > + if (use_dual_pipe)
> > + mtk_mdp_rdma_start(rdma_r, cmdq_pkt);
> > + else
> > + mtk_mdp_rdma_stop(rdma_r, cmdq_pkt);
> > +
> > + mtk_ethdr_layer_config(ethdr, idx, state, cmdq_pkt);
> > +}
> > +
> > +void mtk_ovl_adaptor_config(struct device *dev, unsigned int w,
> > + unsigned int h, unsigned int vrefresh,
> > + unsigned int bpc, struct cmdq_pkt
> > *cmdq_pkt)
> > +{
> > + struct mtk_disp_ovl_adaptor *ovl_adaptor =
> > dev_get_drvdata(dev);
> > +
> > + mtk_ethdr_config(ovl_adaptor-
> > >ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0], w, h,
> > + vrefresh, bpc, cmdq_pkt);
> > +}
> > +
> > +void mtk_ovl_adaptor_start(struct device *dev)
> > +{
> > + struct mtk_disp_ovl_adaptor *ovl_adaptor =
> > dev_get_drvdata(dev);
> > +
> > + mtk_ethdr_start(ovl_adaptor-
> > >ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]);
> > +}
> > +
> > +void mtk_ovl_adaptor_stop(struct device *dev)
> > +{
> > + struct mtk_disp_ovl_adaptor *ovl_adaptor =
> > dev_get_drvdata(dev);
> > + struct device *rdma_l;
> > + struct device *rdma_r;
> > + struct device *merge;
> > + u32 i;
> > +
> > + for (i = 0; i < MTK_OVL_ADAPTOR_LAYER_NUM; i++) {
> > + rdma_l = ovl_adaptor-
> > >ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 + 2 * i];
> > + rdma_r = ovl_adaptor-
> > >ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 + 2 * i + 1];
> > + merge = ovl_adaptor-
> > >ovl_adaptor_comp[OVL_ADAPTOR_MERGE0 + i];
> > +
> > + mtk_mdp_rdma_stop(rdma_l, NULL);
> > + mtk_mdp_rdma_stop(rdma_r, NULL);
> > + mtk_merge_stop(merge);
> > + }
> > +
> > + mtk_ethdr_stop(ovl_adaptor-
> > >ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]);
> > +}
> > +
> > +int mtk_ovl_adaptor_clk_enable(struct device *dev)
> > +{
> > + struct mtk_disp_ovl_adaptor *ovl_adaptor =
> > dev_get_drvdata(dev);
> > + struct device *comp;
> > + int ret;
> > + int i;
> > +
> > + for (i = OVL_ADAPTOR_MDP_RDMA0; i < OVL_ADAPTOR_ID_MAX; i++) {
> > + comp = ovl_adaptor->ovl_adaptor_comp[i];
> > +
> > + if (i < OVL_ADAPTOR_MERGE0)
> > + ret = mtk_mdp_rdma_clk_enable(comp);
> > + else if (i < OVL_ADAPTOR_ETHDR0)
> > + ret = mtk_merge_clk_enable(comp);
> > + else
> > + ret = mtk_ethdr_clk_enable(comp);
> > + if (ret) {
> > + dev_err(dev,
> > + "Failed to enable clock %d, err %d-
> > %s\n",
> > + i, ret, ovl_adaptor_comp_str[i]);
> > + goto clk_err;
> > + }
> > + }
> > +
> > + return ret;
> > +
> > +clk_err:
> > + while (--i >= 0) {
> > + comp = ovl_adaptor->ovl_adaptor_comp[i];
> > + if (i < OVL_ADAPTOR_MERGE0)
> > + mtk_mdp_rdma_clk_disable(comp);
> > + else if (i < OVL_ADAPTOR_ETHDR0)
> > + mtk_merge_clk_disable(comp);
> > + else
> > + mtk_ethdr_clk_disable(comp);
> > + }
> > + return ret;
> > +}
> > +
> > +void mtk_ovl_adaptor_clk_disable(struct device *dev)
> > +{
> > + struct mtk_disp_ovl_adaptor *ovl_adaptor =
> > dev_get_drvdata(dev);
> > + struct device *comp;
> > + int i;
> > +
> > + for (i = OVL_ADAPTOR_MDP_RDMA0; i < OVL_ADAPTOR_ID_MAX; i++) {
> > + comp = ovl_adaptor->ovl_adaptor_comp[i];
> > +
> > + if (i < OVL_ADAPTOR_MERGE0)
> > + mtk_mdp_rdma_clk_disable(comp);
> > + else if (i < OVL_ADAPTOR_ETHDR0)
> > + mtk_merge_clk_disable(comp);
> > + else
> > + mtk_ethdr_clk_disable(comp);
> > + }
> > +}
> > +
> > +unsigned int mtk_ovl_adaptor_layer_nr(struct device *dev)
> > +{
> > + return MTK_OVL_ADAPTOR_LAYER_NUM;
> > +}
> > +
> > +void mtk_ovl_adaptor_enable_vblank(struct device *dev, void
> > (*vblank_cb)(void *),
> > + void *vblank_cb_data)
> > +{
> > + struct mtk_disp_ovl_adaptor *ovl_adaptor =
> > dev_get_drvdata(dev);
> > +
> > + mtk_ethdr_enable_vblank(ovl_adaptor-
> > >ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0],
> > + vblank_cb, vblank_cb_data);
> > +}
> > +
> > +void mtk_ovl_adaptor_disable_vblank(struct device *dev)
> > +{
> > + struct mtk_disp_ovl_adaptor *ovl_adaptor =
> > dev_get_drvdata(dev);
> > +
> > + mtk_ethdr_disable_vblank(ovl_adaptor-
> > >ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]);
> > +}
> > +
> > +static int ovl_adaptor_comp_get_id(struct device *dev, struct
> > device_node *node,
> > + enum mtk_ovl_adaptor_comp_type type)
> > +{
> > + int alias_id = of_alias_get_id(node, private_comp_stem[type]);
> > + int ret;
> > + int i;
> > +
> > + for (i = 0; i < ARRAY_SIZE(comp_matches); i++)
> > + if (comp_matches[i].type == type &&
> > + comp_matches[i].alias_id == alias_id)
> > + return i;
> > +
> > + dev_err(dev, "Failed to get id. type: %d, alias: %d\n", type,
> > alias_id);
> > + return -EINVAL;
> > +}
> > +
> > +static const struct of_device_id mtk_ovl_adaptor_comp_dt_ids[] = {
> > + {
> > + .compatible = "mediatek,mt8195-vdo1-rdma",
> > + .data = (void *)OVL_ADAPTOR_TYPE_RDMA,
> > + }, {
> > + .compatible = "mediatek,mt8195-disp-merge",
> > + .data = (void *)OVL_ADAPTOR_TYPE_MERGE,
> > + }, {
> > + .compatible = "mediatek,mt8195-disp-ethdr",
> > + .data = (void *)OVL_ADAPTOR_TYPE_ETHDR,
> > + },
> > + {},
> > +};
> > +
> > +static int compare_of(struct device *dev, void *data)
> > +{
> > + return dev->of_node == data;
> > +}
> > +
> > +static int ovl_adaptor_comp_init(struct device *dev, struct
> > component_match **match)
> > +{
> > + struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev);
> > + struct device_node *node, *parent;
> > + struct platform_device *comp_pdev;
> > + int i, ret;
> > +
> > + parent = dev->parent->parent->of_node->parent;
> > +
> > + for_each_child_of_node(parent, node) {
> > + const struct of_device_id *of_id;
> > + enum mtk_ovl_adaptor_comp_type type;
> > + int id;
> > +
> > + of_id = of_match_node(mtk_ovl_adaptor_comp_dt_ids,
> > node);
> > + if (!of_id)
> > + continue;
> > +
> > + if (!of_device_is_available(node)) {
> > + dev_info(dev, "Skipping disabled component
> > %pOF\n",
> > + node);
>
> This looks like being a debugging print, use dev_dbg please.
>
OK.
> > + continue;
> > + }
> > +
> > + type = (enum mtk_ovl_adaptor_comp_type)of_id->data;
> > + id = ovl_adaptor_comp_get_id(dev, node, type);
> > + if (id < 0) {
> > + dev_warn(dev, "Skipping unknown component
> > %pOF\n",
> > + node);
> > + continue;
> > + }
> > +
> > + comp_pdev = of_find_device_by_node(node);
> > + if (!comp_pdev) {
> > + dev_warn(dev, "can't find platform device of
> > node:%s\n",
> > + node->name);
> > + return -ENODEV;
> > + }
> > + priv->ovl_adaptor_comp[id] = &comp_pdev->dev;
> > +
> > + drm_of_component_match_add(dev, match, compare_of,
> > node);
> > + dev_info(dev, "Adding component match for %pOF\n",
> > node);
>
> ...and this is another debugging print, imo.
OK.
>
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +static int mtk_disp_ovl_adaptor_comp_bind(struct device *dev,
> > struct device *master,
> > + void *data)
> > +{
> > + return 0;
> > +}
> > +
> > +static void mtk_disp_ovl_adaptor_comp_unbind(struct device *dev,
> > struct device *master,
> > + void *data)
> > +{
> > +}
> > +
> > +static const struct component_ops mtk_disp_ovl_adaptor_comp_ops =
> > {
> > + .bind = mtk_disp_ovl_adaptor_comp_bind,
> > + .unbind = mtk_disp_ovl_adaptor_comp_unbind,
> > +};
> > +
> > +static int mtk_disp_ovl_adaptor_master_bind(struct device *dev)
> > +{
> > + struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev);
> > +
> > + dev_info(dev, "%s-%d", __func__, __LINE__);
>
> Printing the line number here isn't giving any valuable information,
> as this
> function is almost a one-liner... plus, this is a debug print and, as
> such,
> you should either use dev_dbg instead or simply remove it: if
> anything needs
> debugging of this part, you'll probably want to use ftrace anyway, so
> I don't
> really see the need of having this print in place.
>
OK.
> > +
> > + component_bind_all(dev, priv->mmsys_dev);
> > + return 0;
> > +}
> > +
> > +static void mtk_disp_ovl_adaptor_master_unbind(struct device *dev)
> > +{
> > +}
> > +
> > +static const struct component_master_ops
> > mtk_disp_ovl_adaptor_master_ops = {
> > + .bind = mtk_disp_ovl_adaptor_master_bind,
> > + .unbind = mtk_disp_ovl_adaptor_master_unbind,
> > +};
> > +
> > +static int mtk_disp_ovl_adaptor_check_comp(struct device *dev)
> > +{
> > + struct device_node *node;
> > +
> > + for_each_child_of_node(dev->parent->parent->of_node->parent,
> > node) {
> > + const struct of_device_id *of_id;
> > + struct platform_device *comp_pdev;
> > + enum mtk_ovl_adaptor_comp_type type;
> > + int id;
> > +
> > + of_id = of_match_node(mtk_ovl_adaptor_comp_dt_ids,
> > node);
> > + if (!of_id)
> > + continue;
> > +
> > + if (!of_device_is_available(node))
> > + continue;
> > +
> > + type = (enum mtk_ovl_adaptor_comp_type)of_id->data;
> > +
> > + id = ovl_adaptor_comp_get_id(dev, node, type);
> > + if (id < 0)
> > + continue;
> > +
> > + comp_pdev = of_find_device_by_node(node);
> > + if (!comp_pdev)
> > + return -EPROBE_DEFER;
> > +
> > + if (!platform_get_drvdata(comp_pdev))
> > + return -EPROBE_DEFER;
> > + }
> > + return 0;
> > +}
> > +
> > +static int mtk_disp_ovl_adaptor_probe(struct platform_device
> > *pdev)
> > +{
> > + struct mtk_disp_ovl_adaptor *priv;
> > + struct device *dev = &pdev->dev;
> > + struct component_match *match = NULL;
> > + int ret;
> > +
> > + dev_info(dev, "%s+\n", __func__);
>
> If you want to know when you're hitting a function, you should use
> ftrace
> instead of a print. Please remove this message.
>
OK.
> > +
> > + ret = mtk_disp_ovl_adaptor_check_comp(dev);
> > + if (ret < 0)
> > + return ret;
> > +
> > + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
> > + if (!priv)
> > + return -ENOMEM;
> > +
> > + priv->mmsys_dev = pdev->dev.platform_data;
> > +
> > + platform_set_drvdata(pdev, priv);
> > +
> > + ret = ovl_adaptor_comp_init(dev, &match);
> > + if (ret) {
> > + dev_notice(dev, "ovl_adaptor comp init fail\n");
> > + return ret;
> > + }
> > + component_master_add_with_match(dev,
> > &mtk_disp_ovl_adaptor_master_ops, match);
> > +
> > + pm_runtime_enable(dev);
> > +
> > + ret = component_add(dev, &mtk_disp_ovl_adaptor_comp_ops);
> > + if (ret != 0) {
> > + pm_runtime_disable(dev);
> > + dev_err(dev, "Failed to add component: %d\n", ret);
> > + }
> > +
> > + dev_info(dev, "%s-\n", __func__);
>
> Also remove this one.
>
OK.
> > + return ret;
> > +}
> > +
> > +static int mtk_disp_ovl_adaptor_remove(struct platform_device
> > *pdev)
> > +{
> > + component_del(&pdev->dev, &mtk_disp_ovl_adaptor_comp_ops);
> > + pm_runtime_disable(&pdev->dev);
> > + return 0;
> > +}
> > +
> > +struct platform_driver mtk_disp_ovl_adaptor_driver = {
> > + .probe = mtk_disp_ovl_adaptor_probe,
> > + .remove = mtk_disp_ovl_adaptor_remove,
> > + .driver = {
> > + .name = "mediatek-disp-ovl-adaptor",
> > + .owner = THIS_MODULE,
> > + },
>
> Please fix indentation:
> .driver = {
> .......
> },
>
OK.
> Regards,
> - Angelo
