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[23.128.96.34]) by mx.google.com with ESMTPS id h1-20020a056a00230100b006906f7d783fsi3013268pfh.87.2023.09.18.07.18.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Sep 2023 07:18:34 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.34 as permitted sender) client-ip=23.128.96.34; Authentication-Results: mx.google.com; dkim=pass header.i=@mediatek.com header.s=dk header.b=iCZ6FzAC; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.34 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=mediatek.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by howler.vger.email (Postfix) with ESMTP id 5885583F533B; Mon, 18 Sep 2023 01:43:43 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at howler.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241111AbjIRIn3 (ORCPT + 27 others); Mon, 18 Sep 2023 04:43:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39866 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240818AbjIRImd (ORCPT ); Mon, 18 Sep 2023 04:42:33 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3DDA0E3 for ; Mon, 18 Sep 2023 01:42:23 -0700 (PDT) X-UUID: 436947da55ff11eea33bb35ae8d461a2-20230918 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=dWXM2MxkcfzW6RN49ZK59mOAlLhCtd/7QmLoWaia1fw=; b=iCZ6FzACNb+7ApKNGVlCgqjmL1PlC5tPl6dZFSYQPbIjShC+Pu/JLAVtvBdDWYpQcO9eoiWP8PPXcXkQlCsgrHTwH18bGxpIVnIpDCcRnAvvowCU/rvC39JoKYNbMDcfUsgwhcFCoA8phaY9qa57EG9CiGu0b56moTQqOSIo4Qo=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.31,REQID:2f120c75-3166-4539-abe2-0e7bd6a1f33f,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:0ad78a4,CLOUDID:3093f6be-14cc-44ca-b657-2d2783296e72,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR: NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_ULN X-UUID: 436947da55ff11eea33bb35ae8d461a2-20230918 Received: from mtkmbs14n2.mediatek.inc [(172.21.101.76)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 408464815; Mon, 18 Sep 2023 16:42:13 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs13n2.mediatek.inc (172.21.101.108) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Mon, 18 Sep 2023 16:42:11 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Mon, 18 Sep 2023 16:42:11 +0800 From: Hsiao Chien Sung To: AngeloGioacchino Del Regno , Chun-Kuang Hu , Matthias Brugger CC: Daniel Vetter , David Airlie , Philipp Zabel , Chen-Yu Tsai , CK Hu , , , , , Hsiao Chien Sung Subject: [PATCH v2 09/11] drm/mediatek: Support CRC in display driver Date: Mon, 18 Sep 2023 16:42:05 +0800 Message-ID: <20230918084207.23604-10-shawn.sung@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230918084207.23604-1-shawn.sung@mediatek.com> References: <20230918084207.23604-1-shawn.sung@mediatek.com> MIME-Version: 1.0 X-MTK: N X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_PASS,SPF_PASS,UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (howler.vger.email [0.0.0.0]); Mon, 18 Sep 2023 01:43:43 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1777385303316737678 X-GMAIL-MSGID: 1777385303316737678 Register CRC related function pointers to support CRC retrieval. Signed-off-by: Hsiao Chien Sung --- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 258 +++++++++++++++++++- drivers/gpu/drm/mediatek/mtk_drm_crtc.h | 39 +++ drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 35 +++ 3 files changed, 330 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index b6fa4ad2f94d..59501d3eec8a 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -29,14 +29,30 @@ * struct mtk_drm_crtc - MediaTek specific crtc structure. * @base: crtc object. * @enabled: records whether crtc_enable succeeded + * @pending_needs_vblank: determine if we need to handle vblank event + * @event: the vblank event to handle * @planes: array of 4 drm_plane structures, one for each overlay plane + * @layer_nr: layer numbers that the crtc supports * @pending_planes: whether any plane has pending changes to be applied + * @pending_async_planes: if there is any pending async update + * @cmdq_client: a handler to control cmdq (mbox channel, thread ...etc.) + * @cmdq_handle: cmdq packet to store the commands + * @cmdq_event: cmdq event that the thread is waiting for + * @cmdq_vblank_cnt: vblank count that is dedicated for the cmdq thread + * @cb_blocking_queue: wait queue to determine if cmdq is blocked * @mmsys_dev: pointer to the mmsys device for configuration registers + * @dma_dev: pointer to the dma device (usually rdma) * @mutex: handle to one of the ten disp_mutex streams + * @ddp_comp_nr_ori: + * @max_ddp_comp_nr: * @ddp_comp_nr: number of components in ddp_comp * @ddp_comp: array of pointers the mtk_ddp_comp structures used by this crtc - * - * TODO: Needs update: this header is missing a bunch of member descriptions. + * @conn_route_nr: + * @conn_routes: + * @hw_lock: mutex lock to avoid race condition when layer config + * @config_updating: determine if the layer configuration is done + * @crc_provider: get crc provider of the crtc + * @frames: count the frames that are added to crc entry */ struct mtk_drm_crtc { struct drm_crtc base; @@ -67,6 +83,9 @@ struct mtk_drm_crtc { /* lock for display hardware access */ struct mutex hw_lock; bool config_updating; + + struct mtk_ddp_comp *crc_provider; + unsigned int frames; }; struct mtk_crtc_state { @@ -615,6 +634,14 @@ static void mtk_crtc_ddp_irq(void *data) struct drm_crtc *crtc = data; struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); struct mtk_drm_private *priv = crtc->dev->dev_private; + struct mtk_ddp_comp *comp = mtk_crtc->crc_provider; + + /* + * crc providers should make sure the crc is always correct + * by resetting it in .crc_read() + */ + if (crtc->crc.opened) + comp->funcs->crc_read(comp->dev); #if IS_REACHABLE(CONFIG_MTK_CMDQ) if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan) @@ -626,6 +653,24 @@ static void mtk_crtc_ddp_irq(void *data) if (!priv->data->shadow_register) mtk_crtc_ddp_config(crtc, NULL); #endif + + /* + * drm_crtc_add_crc_entry() could take more than 50ms to finish + * put it at the end of the isr + */ + if (crtc->crc.opened) { + /* + * skip the first crc because the first frame is configured by + * mtk_crtc_ddp_hw_init() when atomic enable + */ + if (++mtk_crtc->frames > 1) { + drm_crtc_add_crc_entry(crtc, true, + drm_crtc_vblank_count(crtc), + comp->funcs->crc_entry(comp->dev)); + } + } else { + mtk_crtc->frames = 0; + } mtk_drm_finish_page_flip(mtk_crtc); } @@ -647,6 +692,40 @@ static void mtk_drm_crtc_disable_vblank(struct drm_crtc *crtc) mtk_ddp_comp_disable_vblank(comp); } +static int mtk_drm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src) +{ + if (src && strcmp(src, "auto") != 0) { + DRM_ERROR("%s(crtc-%d): unknown source '%s'\n", + __func__, drm_crtc_index(crtc), src); + return -EINVAL; + } + return 0; +} + +static int mtk_drm_crtc_verify_crc_source(struct drm_crtc *crtc, + const char *src, + size_t *cnt) +{ + struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); + struct mtk_ddp_comp *comp = mtk_crtc->crc_provider; + + if (!comp) { + DRM_ERROR("%s(crtc-%d): no crc provider\n", + __func__, drm_crtc_index(crtc)); + return -ENOENT; + } + + if (src && strcmp(src, "auto") != 0) { + DRM_ERROR("%s(crtc-%d): unknown source '%s'\n", + __func__, drm_crtc_index(crtc), src); + return -EINVAL; + } + + *cnt = comp->funcs->crc_cnt(comp->dev); + + return 0; +} + int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane, struct mtk_plane_state *state) { @@ -779,6 +858,8 @@ static const struct drm_crtc_funcs mtk_crtc_funcs = { .atomic_destroy_state = mtk_drm_crtc_destroy_state, .enable_vblank = mtk_drm_crtc_enable_vblank, .disable_vblank = mtk_drm_crtc_disable_vblank, + .set_crc_source = mtk_drm_crtc_set_crc_source, + .verify_crc_source = mtk_drm_crtc_verify_crc_source, }; static const struct drm_crtc_helper_funcs mtk_crtc_helper_funcs = { @@ -961,6 +1042,11 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, if (comp->funcs->ctm_set) has_ctm = true; + + if (comp->funcs->crc_cnt && + comp->funcs->crc_entry && + comp->funcs->crc_read) + mtk_crtc->crc_provider = comp; } mtk_ddp_comp_register_vblank_cb(comp, mtk_crtc_ddp_irq, @@ -1040,3 +1126,171 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, #endif return 0; } + +void mtk_drm_crc_init(struct mtk_drm_crc *crc, + const u32 *crc_offset_table, size_t crc_count, + u32 reset_offset, u32 reset_mask) +{ + crc->ofs = crc_offset_table; + crc->cnt = crc_count; + crc->rst_ofs = reset_offset; + crc->rst_msk = reset_mask; + crc->va = kcalloc(crc->cnt, sizeof(*crc->va), GFP_KERNEL); + if (!crc->va) { + DRM_ERROR("failed to allocate memory for crc\n"); + crc->cnt = 0; + } +} + +void mtk_drm_crc_read(struct mtk_drm_crc *crc, void __iomem *reg) +{ + if (!crc->cnt || !crc->ofs || !crc->va) + return; + +#if IS_REACHABLE(CONFIG_MTK_CMDQ) + /* sync to see the most up-to-date copy of the DMA buffer */ + dma_sync_single_for_cpu(crc->cmdq_client.chan->mbox->dev, + crc->pa, crc->cnt * sizeof(*crc->va), + DMA_FROM_DEVICE); +#else + /* read crc with cpu for the platforms without cmdq */ + { + u32 n; + + for (n = 0; n < crc->cnt; n++) + crc->va[n] = readl(reg + crc->ofs[n]); + + n = readl(reg + crc->rst_ofs); + + /* pull reset bit */ + n |= crc->rst_msk; + writel(n, reg + crc->rst_ofs); + + /* release reset bit */ + n &= ~crc->rst_msk; + writel(n, reg + crc->rst_ofs); + } +#endif +} + +void mtk_drm_crc_destroy(struct mtk_drm_crc *crc) +{ + if (!crc->cnt) + return; + +#if IS_REACHABLE(CONFIG_MTK_CMDQ) + if (crc->pa) { + dma_unmap_single(crc->cmdq_client.chan->mbox->dev, + crc->pa, crc->cnt * sizeof(*crc->va), + DMA_TO_DEVICE); + crc->pa = 0; + } + if (crc->cmdq_client.chan) { + mtk_drm_cmdq_pkt_destroy(&crc->cmdq_handle); + mbox_free_channel(crc->cmdq_client.chan); + crc->cmdq_client.chan = NULL; + } +#endif + kfree(crc->va); + crc->va = NULL; + crc->cnt = 0; +} + +#if IS_REACHABLE(CONFIG_MTK_CMDQ) +void mtk_drm_crc_cmdq_create(struct device *dev, struct mtk_drm_crc *crc) +{ + int i; + + if (!crc->cnt) { + dev_warn(dev, "%s: not support\n", __func__); + goto cleanup; + } + + if (!crc->ofs) { + dev_warn(dev, "%s: not defined\n", __func__); + goto cleanup; + } + + crc->cmdq_client.client.dev = dev; + crc->cmdq_client.client.tx_block = false; + crc->cmdq_client.client.knows_txdone = true; + crc->cmdq_client.client.rx_callback = NULL; + crc->cmdq_client.chan = mbox_request_channel(&crc->cmdq_client.client, 0); + if (IS_ERR(crc->cmdq_client.chan)) { + dev_warn(dev, "%s: failed to create mailbox client\n", __func__); + crc->cmdq_client.chan = NULL; + goto cleanup; + } + + if (mtk_drm_cmdq_pkt_create(&crc->cmdq_client, &crc->cmdq_handle, PAGE_SIZE)) { + dev_warn(dev, "%s: failed to create cmdq packet\n", __func__); + goto cleanup; + } + + if (!crc->va) { + dev_warn(dev, "%s: no memory\n", __func__); + goto cleanup; + } + + /* map the entry to get a dma address for cmdq to store the crc */ + crc->pa = dma_map_single(crc->cmdq_client.chan->mbox->dev, + crc->va, crc->cnt * sizeof(*crc->va), + DMA_FROM_DEVICE); + + if (dma_mapping_error(crc->cmdq_client.chan->mbox->dev, crc->pa)) { + dev_err(dev, "%s: failed to map dma\n", __func__); + goto cleanup; + } + + if (crc->cmdq_event) + cmdq_pkt_wfe(&crc->cmdq_handle, crc->cmdq_event, true); + + for (i = 0; i < crc->cnt; i++) { + /* put crc to spr1 register */ + cmdq_pkt_read_s(&crc->cmdq_handle, crc->cmdq_reg->subsys, + crc->cmdq_reg->offset + crc->ofs[i], + CMDQ_THR_SPR_IDX1); + + /* copy spr1 register to physical address of the crc */ + cmdq_pkt_assign(&crc->cmdq_handle, CMDQ_THR_SPR_IDX0, + CMDQ_ADDR_HIGH(crc->pa + i * sizeof(*crc->va))); + cmdq_pkt_write_s(&crc->cmdq_handle, CMDQ_THR_SPR_IDX0, + CMDQ_ADDR_LOW(crc->pa + i * sizeof(*crc->va)), + CMDQ_THR_SPR_IDX1); + } + /* reset crc */ + mtk_ddp_write_mask(&crc->cmdq_handle, ~0, crc->cmdq_reg, 0, + crc->rst_ofs, crc->rst_msk); + + /* clear reset bit */ + mtk_ddp_write_mask(&crc->cmdq_handle, 0, crc->cmdq_reg, 0, + crc->rst_ofs, crc->rst_msk); + + cmdq_pkt_jump_absolute(&crc->cmdq_handle); + + return; +cleanup: + mtk_drm_crc_destroy(crc); +} + +void mtk_drm_crc_cmdq_start(struct mtk_drm_crc *crc) +{ + if (!crc->cmdq_client.chan) + return; + + dma_sync_single_for_device(crc->cmdq_client.chan->mbox->dev, + crc->cmdq_handle.pa_base, + crc->cmdq_handle.cmd_buf_size, + DMA_TO_DEVICE); + mbox_send_message(crc->cmdq_client.chan, &crc->cmdq_handle); + mbox_client_txdone(crc->cmdq_client.chan, 0); +} + +void mtk_drm_crc_cmdq_stop(struct mtk_drm_crc *crc) +{ + if (!crc->cmdq_client.chan) + return; + + mbox_flush(crc->cmdq_client.chan, 2000); +} +#endif diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h index 3e9046993d09..3e0e20a3c404 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h @@ -14,6 +14,45 @@ #define MTK_MAX_BPC 10 #define MTK_MIN_BPC 3 +/** + * struct mtk_drm_crc - crc related information + * @ofs: register offset of crc + * @rst_ofs: register offset of crc reset + * @rst_msk: register mask of crc reset + * @cnt: count of crc + * @va: pointer to the start of crc array + * @pa: physical address of the crc for gce to access + * @cmdq_event: the event to trigger the cmdq + * @cmdq_reg: address of the register that cmdq is going to access + * @cmdq_client: handler to control cmdq (mbox channel, thread ...etc.) + * @cmdq_handle: cmdq packet to store the commands + */ +struct mtk_drm_crc { + const u32 *ofs; + u32 rst_ofs; + u32 rst_msk; + size_t cnt; + u32 *va; +#if IS_REACHABLE(CONFIG_MTK_CMDQ) + dma_addr_t pa; + u32 cmdq_event; + struct cmdq_client_reg *cmdq_reg; + struct cmdq_client cmdq_client; + struct cmdq_pkt cmdq_handle; +#endif +}; + +void mtk_drm_crc_init(struct mtk_drm_crc *crc, + const u32 *crc_offset_table, size_t crc_count, + u32 reset_offset, u32 reset_mask); +void mtk_drm_crc_read(struct mtk_drm_crc *crc, void __iomem *reg); +void mtk_drm_crc_destroy(struct mtk_drm_crc *crc); +#if IS_REACHABLE(CONFIG_MTK_CMDQ) +void mtk_drm_crc_cmdq_create(struct device *dev, struct mtk_drm_crc *crc); +void mtk_drm_crc_cmdq_start(struct mtk_drm_crc *crc); +void mtk_drm_crc_cmdq_stop(struct mtk_drm_crc *crc); +#endif + void mtk_drm_crtc_commit(struct drm_crtc *crtc); int mtk_drm_crtc_create(struct drm_device *drm_dev, const unsigned int *path, diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h index febcaeef16a1..07c26d881187 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h @@ -45,6 +45,38 @@ enum mtk_ddp_comp_type { struct mtk_ddp_comp; struct cmdq_pkt; + +/* struct mtk_ddp_comp_funcs - function pointers of the ddp components + * @clk_enable: enable the clocks of the component + * @clk_disable: disable the clocks of the component + * @config: configure the component + * @start: start (enable) the component + * @stop: stop (disable) the component + * @register_vblank_cb: to register a callback function when vblank irq occurs + * @unregister_vblank_cb: to unregister the callback function from the vblank irq + * @enable_vblank: enable vblank irq + * @disable_vblank: disable vblank irq + * @supported_rotations: return rotation capability of the component + * @layer_nr: how many layers the component supports + * @layer_check: to check if the state of the layer is valid for the component + * @layer_config: to configure the component according to the state of the layer + * @gamma_set: to set gamma for the component + * @bgclr_in_on: turn on background color + * @bgclr_in_off: turn off background color + * @ctm_set: set color transformation matrix + * @dma_dev_get: return the device that uses direct memory access + * @get_formats: get the format that is currently in use by the component + * @get_num_formats: get number of the formats that the component supports + * @connect: connect the sub modules of the component + * @disconnect: disconnect the sub modules of the component + * @add: add the device to the component (mount them in the mutex) + * @remove: remove the device from the component (unmount them from the mutex) + * @encoder_index: get the encoder index of the component + * @crc: return the start of crc array + * @crc_cnt: how many CRCs the component supports + * @crc_entry: get the pointer to the crc entry + * @crc_read: call this function to read crc from the hardware component + */ struct mtk_ddp_comp_funcs { int (*clk_enable)(struct device *dev); void (*clk_disable)(struct device *dev); @@ -80,6 +112,9 @@ struct mtk_ddp_comp_funcs { void (*disconnect)(struct device *dev, struct device *mmsys_dev, unsigned int next); void (*add)(struct device *dev, struct mtk_mutex *mutex); void (*remove)(struct device *dev, struct mtk_mutex *mutex); + size_t (*crc_cnt)(struct device *dev); + u32 *(*crc_entry)(struct device *dev); + void (*crc_read)(struct device *dev); }; struct mtk_ddp_comp {