diff options
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 679 |
1 files changed, 679 insertions, 0 deletions
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..c0af3e3b51d5 --- /dev/null +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c @@ -0,0 +1,679 @@ +// 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]); +} + +u32 mtk_ovl_adaptor_get_blend_modes(struct device *dev) +{ + struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); + + return mtk_ethdr_get_blend_modes(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 ovl_adaptor_of_get_ddp_comp_type(struct device_node *node, + enum mtk_ovl_adaptor_comp_type *ctype) +{ + const struct of_device_id *of_id = of_match_node(mtk_ovl_adaptor_comp_dt_ids, node); + + if (!of_id) + return -EINVAL; + + *ctype = (enum mtk_ovl_adaptor_comp_type)((uintptr_t)of_id->data); + + return 0; +} + +bool mtk_ovl_adaptor_is_comp_present(struct device_node *node) +{ + enum mtk_ovl_adaptor_comp_type type; + int ret; + + ret = ovl_adaptor_of_get_ddp_comp_type(node, &type); + if (ret) + return false; + + if (type >= OVL_ADAPTOR_TYPE_NUM) + return false; + + /* + * In the context of mediatek-drm, ETHDR, MDP_RDMA and Padding are + * used exclusively by OVL Adaptor: if this component is not one of + * those, it's likely not an OVL Adaptor path. + */ + return type == OVL_ADAPTOR_TYPE_ETHDR || + type == OVL_ADAPTOR_TYPE_MDP_RDMA || + type == OVL_ADAPTOR_TYPE_PADDING; +} + +static void ovl_adaptor_put_device(void *_dev) +{ + struct device *dev = _dev; + + put_device(dev); +} + +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) { + enum mtk_ovl_adaptor_comp_type type; + int id, ret; + + ret = ovl_adaptor_of_get_ddp_comp_type(node, &type); + if (ret) + continue; + + if (!of_device_is_available(node)) { + dev_dbg(dev, "Skipping disabled component %pOF\n", + node); + continue; + } + + 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; + + ret = devm_add_action_or_reset(dev, ovl_adaptor_put_device, + &comp_pdev->dev); + if (ret) + return ret; + + priv->ovl_adaptor_comp[id] = &comp_pdev->dev; + + drm_of_component_match_add(dev, match, component_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 = mtk_disp_ovl_adaptor_remove, + .driver = { + .name = "mediatek-disp-ovl-adaptor", + }, +}; |