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Sat, 1 Oct 2022 00:06:42 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Sat, 1 Oct 2022 00:06:41 +0800 From: Yongqiang Niu To: CK Hu , Chun-Kuang Hu CC: Jassi Brar , Matthias Brugger , , , , , Hsin-Yi Wang , Yongqiang Niu Subject: [PATCH v8, 3/4] mailbox: mtk-cmdq: add gce ddr enable support flow Date: Sat, 1 Oct 2022 00:06:37 +0800 Message-ID: <20220930160638.7588-4-yongqiang.niu@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220930160638.7588-1-yongqiang.niu@mediatek.com> References: <20220930160638.7588-1-yongqiang.niu@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-20220930_090753_135881_0CA58909 X-CRM114-Status: GOOD ( 11.79 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org add gce ddr enable control flow when gce suspend/resume Signed-off-by: Yongqiang Niu Reviewed-by: AngeloGioacchino Del Regno --- drivers/mailbox/mtk-cmdq-mailbox.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c index 04eb44d89119..2db82ff838ed 100644 --- a/drivers/mailbox/mtk-cmdq-mailbox.c +++ b/drivers/mailbox/mtk-cmdq-mailbox.c @@ -94,6 +94,18 @@ struct gce_plat { u32 gce_num; }; +static void cmdq_sw_ddr_enable(struct cmdq *cmdq, bool enable) +{ + WARN_ON(clk_bulk_enable(cmdq->gce_num, cmdq->clocks)); + + if (enable) + writel(GCE_DDR_EN | GCE_CTRL_BY_SW, cmdq->base + GCE_GCTL_VALUE); + else + writel(GCE_CTRL_BY_SW, cmdq->base + GCE_GCTL_VALUE); + + clk_bulk_disable(cmdq->gce_num, cmdq->clocks); +} + u8 cmdq_get_shift_pa(struct mbox_chan *chan) { struct cmdq *cmdq = container_of(chan->mbox, struct cmdq, mbox); @@ -319,6 +331,9 @@ static int cmdq_suspend(struct device *dev) if (task_running) dev_warn(dev, "exist running task(s) in suspend\n"); + if (cmdq->sw_ddr_en) + cmdq_sw_ddr_enable(cmdq, false); + clk_bulk_unprepare(cmdq->gce_num, cmdq->clocks); return 0; @@ -330,6 +345,10 @@ static int cmdq_resume(struct device *dev) WARN_ON(clk_bulk_prepare(cmdq->gce_num, cmdq->clocks)); cmdq->suspended = false; + + if (cmdq->sw_ddr_en) + cmdq_sw_ddr_enable(cmdq, true); + return 0; } @@ -337,6 +356,9 @@ static int cmdq_remove(struct platform_device *pdev) { struct cmdq *cmdq = platform_get_drvdata(pdev); + if (cmdq->sw_ddr_en) + cmdq_sw_ddr_enable(cmdq, false); + clk_bulk_unprepare(cmdq->gce_num, cmdq->clocks); return 0; }