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Thu, 12 Mar 2020 03:09:12 -0800 Received: from mtkmbs05n1.mediatek.inc (172.21.101.15) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 12 Mar 2020 04:09:11 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs05n1.mediatek.inc (172.21.101.15) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 12 Mar 2020 19:07:57 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 12 Mar 2020 19:08:51 +0800 From: Stanley Chu To: , , , , Subject: [PATCH v2 8/8] scsi: ufs-mediatek: customize the delay for host enabling Date: Thu, 12 Mar 2020 19:09:08 +0800 Message-ID: <20200312110908.14895-9-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200312110908.14895-1-stanley.chu@mediatek.com> References: <20200312110908.14895-1-stanley.chu@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-20200312_040920_481303_121C43A5 X-CRM114-Status: GOOD ( 10.72 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stanley Chu , bvanassche@acm.org, andy.teng@mediatek.com, chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org, cang@codeaurora.org, linux-mediatek@lists.infradead.org, peter.wang@mediatek.com, matthias.bgg@gmail.com, beanhuo@micron.com, linux-arm-kernel@lists.infradead.org, asutoshd@codeaurora.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org MediaTek platform and UFS controller can dynamically customize the delay for host enabling according to different scenarios. For example, for host initialization with low-level MPHY calibration required, longer delay shall be expected. But the delay could be removed if such MPHY calibration can be skipped, like resume flow. Signed-off-by: Stanley Chu --- arch/arm64/configs/defconfig | 1 + drivers/scsi/ufs/ufs-mediatek.c | 14 ++++++++++++++ 2 files changed, 15 insertions(+) diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 0a8a2ad94bef..9306f658a6cd 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -235,6 +235,7 @@ CONFIG_SCSI_MPT3SAS=m CONFIG_SCSI_UFSHCD=y CONFIG_SCSI_UFSHCD_PLATFORM=y CONFIG_SCSI_UFS_QCOM=m +CONFIG_SCSI_UFS_MEDIATEK=m CONFIG_SCSI_UFS_HISI=y CONFIG_ATA=y CONFIG_SATA_AHCI=y diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c index 0ff6781654fd..6f437f0091bf 100644 --- a/drivers/scsi/ufs/ufs-mediatek.c +++ b/drivers/scsi/ufs/ufs-mediatek.c @@ -71,6 +71,19 @@ static void ufs_mtk_cfg_unipro_cg(struct ufs_hba *hba, bool enable) } } +static int ufs_mtk_hce_enable_notify(struct ufs_hba *hba, + enum ufs_notify_change_status status) +{ + if (status == PRE_CHANGE) { + if (hba->pm_op_in_progress) + hba->hba_enable_delay_us = 0; + else + hba->hba_enable_delay_us = 100; + } + + return 0; +} + static int ufs_mtk_bind_mphy(struct ufs_hba *hba) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); @@ -552,6 +565,7 @@ static struct ufs_hba_variant_ops ufs_hba_mtk_vops = { .name = "mediatek.ufshci", .init = ufs_mtk_init, .setup_clocks = ufs_mtk_setup_clocks, + .hce_enable_notify = ufs_mtk_hce_enable_notify, .link_startup_notify = ufs_mtk_link_startup_notify, .pwr_change_notify = ufs_mtk_pwr_change_notify, .apply_dev_quirks = ufs_mtk_apply_dev_quirks,