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Mon, 17 Feb 2025 22:44:09 -0700 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.28; Tue, 18 Feb 2025 13:44:07 +0800 Received: from mtksitap99.mediatek.inc (10.233.130.16) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1258.28 via Frontend Transport; Tue, 18 Feb 2025 13:44:06 +0800 From: Jason-JH Lin To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jassi Brar , Chun-Kuang Hu , AngeloGioacchino Del Regno , Mauro Carvalho Chehab Subject: [PATCH v4 4/8] soc: mediatek: mtk-cmdq: Add pa_base parsing for unsupported subsys ID hardware Date: Tue, 18 Feb 2025 13:41:49 +0800 Message-ID: <20250218054405.2017918-5-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250218054405.2017918-1-jason-jh.lin@mediatek.com> References: <20250218054405.2017918-1-jason-jh.lin@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250217_214416_752950_1A8C596B X-CRM114-Status: GOOD ( 18.29 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Moudy Ho , Xiandong Wang , Jason-JH Lin , Singo Chang , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Project_Global_Chrome_Upstream_Group@mediatek.com, Pin-yen Lin , Xavier Chang , Nancy Lin , linux-mediatek@lists.infradead.org, Sirius Wang , Matthias Brugger , linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org When GCE executes instructions, the corresponding hardware register can be found through the subsys ID. For hardware that does not support subsys ID, its subsys ID will be set to invalid value and its physical address needs to be used to generate GCE instructions. This commit adds a pa_base parsing flow to the cmdq_client_reg structure for these unsupported subsys ID hardware. Signed-off-by: Jason-JH Lin --- drivers/soc/mediatek/mtk-cmdq-helper.c | 18 ++++++++++++++++-- include/linux/soc/mediatek/mtk-cmdq.h | 3 +++ 2 files changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index 455221e8de24..aa9853100d78 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #define CMDQ_WRITE_ENABLE_MASK BIT(0) @@ -60,20 +61,30 @@ int cmdq_dev_get_client_reg(struct device *dev, struct cmdq_client_reg *client_reg, int idx) { struct of_phandle_args spec; + struct resource res; int err; if (!client_reg) return -ENOENT; + if (of_address_to_resource(dev->of_node, 0, &res) != 0) { + dev_err(dev, "Missing reg in %s node\n", dev->of_node->full_name); + return -EINVAL; + } + client_reg->pa_base = res.start; + err = of_parse_phandle_with_fixed_args(dev->of_node, "mediatek,gce-client-reg", 3, idx, &spec); if (err < 0) { - dev_warn(dev, + dev_dbg(dev, "error %d can't parse gce-client-reg property (%d)", err, idx); - return err; + /* make subsys invalid */ + client_reg->subsys = CMDQ_SUBSYS_INVALID; + + return 0; } client_reg->subsys = (u8)spec.args[0]; @@ -130,6 +141,9 @@ int cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt, size_t siz pkt->buf_size = size; + /* need to use pkt->cl->chan later to call mbox APIs when generating instruction */ + pkt->cl = (void *)client; + dev = client->chan->mbox->dev; dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size, DMA_TO_DEVICE); diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h index 0c3906e8ad19..3578cc9200e9 100644 --- a/include/linux/soc/mediatek/mtk-cmdq.h +++ b/include/linux/soc/mediatek/mtk-cmdq.h @@ -23,6 +23,8 @@ #define CMDQ_THR_SPR_IDX2 (2) #define CMDQ_THR_SPR_IDX3 (3) +#define CMDQ_SUBSYS_INVALID (U8_MAX) + struct cmdq_pkt; enum cmdq_logic_op { @@ -52,6 +54,7 @@ struct cmdq_operand { struct cmdq_client_reg { u8 subsys; + phys_addr_t pa_base; u16 offset; u16 size; };