// 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.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/reset.h>
#include <linux/soc/mediatek/mtk-cmdq.h>
#include <linux/soc/mediatek/mtk-mmsys.h>
#include <linux/soc/mediatek/mtk-mutex.h>
#include "mtk_ddp_comp.h"
#include "mtk_disp_drv.h"
#include "mtk_drm_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_ETHDR,
OVL_ADAPTOR_TYPE_MDP_RDMA,
OVL_ADAPTOR_TYPE_MERGE,
OVL_ADAPTOR_TYPE_PADDING,
OVL_ADAPTOR_TYPE_NUM,
};
enum mtk_ovl_adaptor_comp_id {
OVL_ADAPTOR_ETHDR0,
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_PADDING0,
OVL_ADAPTOR_PADDING1,
OVL_ADAPTOR_PADDING2,
OVL_ADAPTOR_PADDING3,
OVL_ADAPTOR_PADDING4,
OVL_ADAPTOR_PADDING5,
OVL_ADAPTOR_PADDING6,
OVL_ADAPTOR_PADDING7,
OVL_ADAPTOR_ID_MAX
};
struct ovl_adaptor_comp_match {
enum mtk_ovl_adaptor_comp_type type;
enum mtk_ddp_comp_id comp_id;
int alias_id;
const struct mtk_ddp_comp_funcs *funcs;
};
struct mtk_disp_ovl_adaptor {
struct device *ovl_adaptor_comp[OVL_ADAPTOR_ID_MAX];
struct device *mmsys_dev;
bool children_bound;
};
static const char * const private_comp_stem[OVL_ADAPTOR_TYPE_NUM] = {
[OVL_ADAPTOR_TYPE_ETHDR] = "ethdr",
[OVL_ADAPTOR_TYPE_MDP_RDMA] = "vdo1-rdma",
[OVL_ADAPTOR_TYPE_MERGE] = "merge",
[OVL_ADAPTOR_TYPE_PADDING] = "padding",
};
static const struct mtk_ddp_comp_funcs ethdr = {
.clk_enable = mtk_ethdr_clk_enable,
.clk_disable = mtk_ethdr_clk_disable,
.start = mtk_ethdr_start,
.stop = mtk_ethdr_stop,
};
static const struct mtk_ddp_comp_funcs merge = {
.clk_enable = mtk_merge_clk_enable,
.clk_disable = mtk_merge_clk_disable,
.mode_valid = mtk_merge_mode_valid,
};
static const struct mtk_ddp_comp_funcs padding = {
.clk_enable = mtk_padding_clk_enable,
.clk_disable = mtk_padding_clk_disable,
.start = mtk_padding_start,
.stop = mtk_padding_stop,
};
static const struct mtk_ddp_comp_funcs rdma = {
.power_on = mtk_mdp_rdma_power_on,
.power_off = mtk_mdp_rdma_power_off,
.clk_enable = mtk_mdp_rdma_clk_enable,
.clk_disable = mtk_mdp_rdma_clk_disable,
};
static const struct ovl_adaptor_comp_match comp_matches[OVL_ADAPTOR_ID_MAX] = {
[OVL_ADAPTOR_ETHDR0] = { OVL_ADAPTOR_TYPE_ETHDR, DDP_COMPONENT_ETHDR_MIXER, 0, ðdr },
[OVL_ADAPTOR_MDP_RDMA0] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA0, 0, &rdma },
[OVL_ADAPTOR_MDP_RDMA1] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA1, 1, &rdma },
[OVL_ADAPTOR_MDP_RDMA2] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA2, 2, &rdma },
[OVL_ADAPTOR_MDP_RDMA3] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA3, 3, &rdma },
[OVL_ADAPTOR_MDP_RDMA4] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA4, 4, &rdma },
[OVL_ADAPTOR_MDP_RDMA5] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA5, 5, &rdma },
[OVL_ADAPTOR_MDP_RDMA6] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA6, 6, &rdma },
[OVL_ADAPTOR_MDP_RDMA7] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA7, 7, &rdma },
[OVL_ADAPTOR_MERGE0] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE1, 1, &merge },
[OVL_ADAPTOR_MERGE1] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE2, 2, &merge },
[OVL_ADAPTOR_MERGE2] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE3, 3, &merge },
[OVL_ADAPTOR_MERGE3] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE4, 4, &merge },
[OVL_ADAPTOR_PADDING0] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING0, 0, &padding },
[OVL_ADAPTOR_PADDING1] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING1, 1, &padding },
[OVL_ADAPTOR_PADDING2] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING2, 2, &padding },
[OVL_ADAPTOR_PADDING3] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING3, 3, &padding },
[OVL_ADAPTOR_PADDING4] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING4, 4, &padding },
[OVL_ADAPTOR_PADDING5] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING5, 5, &padding },
[OVL_ADAPTOR_PADDING6] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING6, 6, &padding },
[OVL_ADAPTOR_PADDING7] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING7, 7, &padding },
};
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 align_width;
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%pad, 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 || !pending->width || !pending->height) {
mtk_merge_stop_cmdq(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 */
align_width = ALIGN_DOWN(pending->width, 2);
if (align_width > MTK_OVL_ADAPTOR_RDMA_MAX_WIDTH)
use_dual_pipe = true;
if (use_dual_pipe) {
l_w = (align_width / 2) + ((pending->width / 2) % 2);
r_w = align_width - l_w;
} else {
l_w = align_width;
}
mtk_merge_advance_config(merge, l_w, r_w, pending->height, 0, 0, cmdq_pkt);
mtk_mmsys_merge_async_config(ovl_adaptor->mmsys_dev, idx, align_width / 2,
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;
rdma_config.color_encoding = pending->color_encoding;
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_start_cmdq(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)
{
int i;
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) {
if (!ovl_adaptor->ovl_adaptor_comp[i] ||
!comp_matches[i].funcs->start)
continue;
comp_matches[i].funcs->start(ovl_adaptor->ovl_adaptor_comp[i]);
}
}
void mtk_ovl_adaptor_stop(struct device *dev)
{
int i;
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) {
if (!ovl_adaptor->ovl_adaptor_comp[i] ||
!comp_matches[i].funcs->stop)
continue;
comp_matches[i].funcs->stop(ovl_adaptor->ovl_adaptor_comp[i]);
}
}
/**
* power_off - Power off the devices in OVL adaptor
* @dev: Device to be powered off
* @num: Number of the devices to be powered off
*
* Calls the .power_off() ovl_adaptor component callback if it is present.
*/
static inline void power_off(struct device *dev, int num)
{
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
int i;
if (num > OVL_ADAPTOR_ID_MAX)
num = OVL_ADAPTOR_ID_MAX;
for (i = num - 1; i >= 0; i--) {
if (!ovl_adaptor->ovl_adaptor_comp[i] ||
!comp_matches[i].funcs->power_off)
continue;
comp_matches[i].funcs->power_off(ovl_adaptor->ovl_adaptor_comp[i]);
}
}
/**
* mtk_ovl_adaptor_power_on - Power on the devices in OVL adaptor
* @dev: Device to be powered on
*
* Different from OVL, OVL adaptor is a pseudo device so
* we didn't define it in the device tree, pm_runtime_resume_and_get()
* called by .atomic_enable() power on no device in OVL adaptor,
* we have to implement a function to do the job instead.
*
* Return: Zero for success or negative number for failure.
*/
int mtk_ovl_adaptor_power_on(struct device *dev)
{
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
int i, ret;
for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) {
if (!ovl_adaptor->ovl_adaptor_comp[i] ||
!comp_matches[i].funcs->power_on)
continue;
ret = comp_matches[i].funcs->power_on(ovl_adaptor->ovl_adaptor_comp[i]);
if (ret < 0) {
dev_err(dev, "Failed to enable power domain %d, err %d\n", i, ret);
power_off(dev, i);
return ret;
}
}
return 0;
}
void mtk_ovl_adaptor_power_off(struct device *dev)
{
power_off(dev, OVL_ADAPTOR_ID_MAX);
}
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 = 0; i < OVL_ADAPTOR_ID_MAX; i++) {
comp = ovl_adaptor->ovl_adaptor_comp[i];
if (!comp || !comp_matches[i].funcs->clk_enable)
continue;
ret = comp_matches[i].funcs->clk_enable(comp);
if (ret) {
dev_err(dev, "Failed to enable clock %d, err %d\n", i, ret);
while (--i >= 0)
comp_matches[i].funcs->clk_disable(comp);
return ret;
}
}
return 0;
}
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 = 0; i < OVL_ADAPTOR_ID_MAX; i++) {
comp = ovl_adaptor->ovl_adaptor_comp[i];
if (!comp || !comp_matches[i].funcs->clk_disable)
continue;
comp_matches[i].funcs->clk_disable(comp);
if (i < OVL_ADAPTOR_MERGE0)
pm_runtime_put(comp);
}
}
enum drm_mode_status mtk_ovl_adaptor_mode_valid(struct device *dev,
const struct drm_display_mode *mode)
{
int i;
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) {
dev = ovl_adaptor->ovl_adaptor_comp[i];
if (!dev || !comp_matches[i].funcs->mode_valid)
continue;
return comp_matches[i].funcs->mode_valid(dev, mode);
}
return MODE_OK;
}
unsigned int mtk_ovl_adaptor_layer_nr(struct device *dev)
{
return MTK_OVL_ADAPTOR_LAYER_NUM;
}
struct device *mtk_ovl_adaptor_dma_dev_get(struct device *dev)
{
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
return ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0];
}
void mtk_ovl_adaptor_register_vblank_cb(struct device *dev, void (*vblank_cb)(void *),
void *vblank_cb_data)
{
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
mtk_ethdr_register_vblank_cb(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0],
vblank_cb, vblank_cb_data);
}
void mtk_ovl_adaptor_unregister_vblank_cb(struct device *dev)
{
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
mtk_ethdr_unregister_vblank_cb(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]);
}
void mtk_ovl_adaptor_enable_vblank(struct device *dev)
{
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
mtk_ethdr_enable_vblank(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]);
}
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]);
}
const u32 *mtk_ovl_adaptor_get_formats(struct device *dev)
{
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
return mtk_mdp_rdma_get_formats(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0]);
}
size_t mtk_ovl_adaptor_get_num_formats(struct device *dev)
{
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
return mtk_mdp_rdma_get_num_formats(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0]);
}
void mtk_ovl_adaptor_add_comp(struct device *dev, struct mtk_mutex *mutex)
{
int i;
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) {
if (!ovl_adaptor->ovl_adaptor_comp[i])
continue;
mtk_mutex_add_comp(mutex, comp_matches[i].comp_id);
}
}
void mtk_ovl_adaptor_remove_comp(struct device *dev, struct mtk_mutex *mutex)
{
int i;
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) {
if (!ovl_adaptor->ovl_adaptor_comp[i])
continue;
mtk_mutex_remove_comp(mutex, comp_matches[i].comp_id);
}
}
void mtk_ovl_adaptor_connect(struct device *dev, struct device *mmsys_dev, unsigned int next)
{
mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_ETHDR_MIXER, next);
mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MDP_RDMA0, DDP_COMPONENT_MERGE1);
mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MDP_RDMA1, DDP_COMPONENT_MERGE1);
mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MDP_RDMA2, DDP_COMPONENT_MERGE2);
mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE1, DDP_COMPONENT_ETHDR_MIXER);
mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE2, DDP_COMPONENT_ETHDR_MIXER);
mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE3, DDP_COMPONENT_ETHDR_MIXER);
mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE4, DDP_COMPONENT_ETHDR_MIXER);
}
void mtk_ovl_adaptor_disconnect(struct device *dev, struct device *mmsys_dev, unsigned int next)
{
mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_ETHDR_MIXER, next);
mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MDP_RDMA0, DDP_COMPONENT_MERGE1);
mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MDP_RDMA1, DDP_COMPONENT_MERGE1);
mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MDP_RDMA2, DDP_COMPONENT_MERGE2);
mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE1, DDP_COMPONENT_ETHDR_MIXER);
mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE2, DDP_COMPONENT_ETHDR_MIXER);
mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE3, DDP_COMPONENT_ETHDR_MIXER);
mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE4, DDP_COMPONENT_ETHDR_MIXER);
}
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 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_warn(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,mt8188-disp-padding", .data = (void *)OVL_ADAPTOR_TYPE_PADDING },
{ .compatible = "mediatek,mt8195-disp-ethdr", .data = (void *)OVL_ADAPTOR_TYPE_ETHDR },
{ .compatible = "mediatek,mt8195-disp-merge", .data = (void *)OVL_ADAPTOR_TYPE_MERGE },
{ .compatible = "mediatek,mt8195-vdo1-rdma", .data = (void *)OVL_ADAPTOR_TYPE_MDP_RDMA },
{ /* sentinel */ }
};
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 *parent;
struct platform_device *comp_pdev;
parent = dev->parent->parent->of_node->parent;
for_each_child_of_node_scoped(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_dbg(dev, "Skipping disabled component %pOF\n",
node);
continue;
}
type = (enum mtk_ovl_adaptor_comp_type)(uintptr_t)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)
return -EPROBE_DEFER;
priv->ovl_adaptor_comp[id] = &comp_pdev->dev;
drm_of_component_match_add(dev, match, compare_of, node);
dev_dbg(dev, "Adding component match for %pOF\n", node);
}
if (!*match) {
dev_err(dev, "No match device for ovl_adaptor\n");
return -ENODEV;
}
return 0;
}
static int mtk_disp_ovl_adaptor_comp_bind(struct device *dev, struct device *master,
void *data)
{
struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev);
if (!priv->children_bound)
return -EPROBE_DEFER;
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);
int ret;
ret = component_bind_all(dev, priv->mmsys_dev);
if (ret)
return dev_err_probe(dev, ret, "component_bind_all failed!\n");
priv->children_bound = true;
return 0;
}
static void mtk_disp_ovl_adaptor_master_unbind(struct device *dev)
{
struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev);
priv->children_bound = false;
}
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_probe(struct platform_device *pdev)
{
struct mtk_disp_ovl_adaptor *priv;
struct device *dev = &pdev->dev;
struct component_match *match = NULL;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
platform_set_drvdata(pdev, priv);
ret = ovl_adaptor_comp_init(dev, &match);
if (ret < 0)
return ret;
priv->mmsys_dev = pdev->dev.platform_data;
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);
return dev_err_probe(dev, ret, "Failed to add component\n");
}
return 0;
}
static void mtk_disp_ovl_adaptor_remove(struct platform_device *pdev)
{
component_master_del(&pdev->dev, &mtk_disp_ovl_adaptor_master_ops);
pm_runtime_disable(&pdev->dev);
}
struct platform_driver mtk_disp_ovl_adaptor_driver = {
.probe = mtk_disp_ovl_adaptor_probe,
.remove_new = mtk_disp_ovl_adaptor_remove,
.driver = {
.name = "mediatek-disp-ovl-adaptor",
},
};
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