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Fri, 13 Mar 2020 01:11:24 -0800 Received: from MTKMBS02N1.mediatek.inc (172.21.101.77) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 13 Mar 2020 02:01:34 -0700 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 13 Mar 2020 16:59:10 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 13 Mar 2020 17:00:33 +0800 From: Stanley Chu To: , , , , Subject: [PATCH v4 8/8] scsi: ufs-mediatek: customize the delay for host enabling Date: Fri, 13 Mar 2020 17:01:03 +0800 Message-ID: <20200313090103.15390-9-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200313090103.15390-1-stanley.chu@mediatek.com> References: <20200313090103.15390-1-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-20200313_021130_986995_3A809C6D X-CRM114-Status: GOOD ( 13.08 ) 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 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] 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, if UniPro enters lower-power mode, such delay can be minimized, otherwise longer delay shall be expected. Signed-off-by: Stanley Chu --- drivers/scsi/ufs/ufs-mediatek.c | 43 ++++++++++++++++++++++++++------- drivers/scsi/ufs/ufs-mediatek.h | 1 + 2 files changed, 35 insertions(+), 9 deletions(-) diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c index 0ff6781654fd..c0fd7d2e4d0d 100644 --- a/drivers/scsi/ufs/ufs-mediatek.c +++ b/drivers/scsi/ufs/ufs-mediatek.c @@ -30,11 +30,6 @@ #define ufs_mtk_device_reset_ctrl(high, res) \ ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, high, res) -#define ufs_mtk_unipro_powerdown(hba, powerdown) \ - ufshcd_dme_set(hba, \ - UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0), \ - powerdown) - static void ufs_mtk_cfg_unipro_cg(struct ufs_hba *hba, bool enable) { u32 tmp; @@ -71,6 +66,21 @@ 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) +{ + struct ufs_mtk_host *host = ufshcd_get_variant(hba); + + if (status == PRE_CHANGE) { + if (host->unipro_lpm) + hba->hba_enable_delay_us = 0; + else + hba->hba_enable_delay_us = 600; + } + + return 0; +} + static int ufs_mtk_bind_mphy(struct ufs_hba *hba) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); @@ -324,12 +334,26 @@ static int ufs_mtk_pwr_change_notify(struct ufs_hba *hba, return ret; } +static int ufs_mtk_unipro_set_pm(struct ufs_hba *hba, u32 lpm) +{ + int ret; + struct ufs_mtk_host *host = ufshcd_get_variant(hba); + + ret = ufshcd_dme_set(hba, + UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0), + lpm); + if (!ret) + host->unipro_lpm = lpm; + + return ret; +} + static int ufs_mtk_pre_link(struct ufs_hba *hba) { int ret; u32 tmp; - ufs_mtk_unipro_powerdown(hba, 0); + ufs_mtk_unipro_set_pm(hba, 0); /* * Setting PA_Local_TX_LCC_Enable to 0 before link startup @@ -437,7 +461,7 @@ static int ufs_mtk_link_set_hpm(struct ufs_hba *hba) if (err) return err; - err = ufs_mtk_unipro_powerdown(hba, 0); + err = ufs_mtk_unipro_set_pm(hba, 0); if (err) return err; @@ -458,10 +482,10 @@ static int ufs_mtk_link_set_lpm(struct ufs_hba *hba) { int err; - err = ufs_mtk_unipro_powerdown(hba, 1); + err = ufs_mtk_unipro_set_pm(hba, 1); if (err) { /* Resume UniPro state for following error recovery */ - ufs_mtk_unipro_powerdown(hba, 0); + ufs_mtk_unipro_set_pm(hba, 0); return err; } @@ -552,6 +576,7 @@ 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, diff --git a/drivers/scsi/ufs/ufs-mediatek.h b/drivers/scsi/ufs/ufs-mediatek.h index 4c787b99fe41..5bbd3e9cbae2 100644 --- a/drivers/scsi/ufs/ufs-mediatek.h +++ b/drivers/scsi/ufs/ufs-mediatek.h @@ -91,6 +91,7 @@ enum { struct ufs_mtk_host { struct ufs_hba *hba; struct phy *mphy; + bool unipro_lpm; bool ref_clk_enabled; u16 ref_clk_ungating_wait_us; u16 ref_clk_gating_wait_us;