From patchwork Fri Dec 13 13:53:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam via B4 Relay X-Patchwork-Id: 850378 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 297CC1E0DCD; Fri, 13 Dec 2024 13:53:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734098017; cv=none; b=VcAqtXu/wq1c8iTzYEGrHevHkXMr8kaIGNQeGvlh4QApLQbxbnz8CfaHaqKHfGfPS0Jf4QFn4UXwbdfimzcKI+0PJHnWygGAba7f51VZGVz9YKuXVt7QOji7IG1NlbdUtedmVhrm47FCvzsfUwTkDmwEXdKcuPLqFxjxmdSB0vc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734098017; c=relaxed/simple; bh=ILrVOZAnjJk8uP2YDbIU+dxS9aQbWGYFC0vNs5GJeq4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=o3fJ8a2Qq9EZML7pIF6mHGy0ajDaR9m9JLnxDp3Hz0qlGYsOxkR5aUHtLxTmbmChRIwsVeTIKT540y/xowKMaM0A9vGIJ3n1K14mS5S1EiXDctGXalqYvdEQt4BS0FWKXgoGlc7oMA3Whe2g+V3BErpFj7RJKmxidqDAXtDWvTg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=VJCJTX5u; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="VJCJTX5u" Received: by smtp.kernel.org (Postfix) with ESMTPS id 86643C4CED2; Fri, 13 Dec 2024 13:53:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1734098016; bh=ILrVOZAnjJk8uP2YDbIU+dxS9aQbWGYFC0vNs5GJeq4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=VJCJTX5ujgivEC97TnV4uxHcd1BWB31/0GBILvnuvhqlAETVtCL7yeyGPXUaT+IOo aIdD1LoFjJhJz1XMJXQvMq5muFo5tlSUyY45XNdklcx+Y591TRiHrT37QNImBQ69k5 BlwURbqBaQ/WbSDlBWH1YVFpP4YrYXFcpEUbFaeQJkNB9wzFFcQq6DG/ATmcu3BV85 5fwpX/XA8KEWSPlWi2bKPD3d1WVl1HqTpGZqD2LB2PZiWdKKQep1SWIafNlF3hYtdj VbPAMRBAR0zVRfitHbwmotyjimLvFh8yXOe8CKivs5du0+FQ0BjYz/5UcDYw6yk6HW bfWXdCYcp7vDw== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6B360E77180; Fri, 13 Dec 2024 13:53:36 +0000 (UTC) From: Manivannan Sadhasivam via B4 Relay Date: Fri, 13 Dec 2024 19:23:29 +0530 Subject: [PATCH v2 1/3] scsi: ufs: qcom: Power off the PHY if it was already powered on in ufs_qcom_power_up_sequence() Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241213-ufs-qcom-suspend-fix-v2-1-1de6cd2d6146@linaro.org> References: <20241213-ufs-qcom-suspend-fix-v2-0-1de6cd2d6146@linaro.org> In-Reply-To: <20241213-ufs-qcom-suspend-fix-v2-0-1de6cd2d6146@linaro.org> To: Alim Akhtar , Avri Altman , Bart Van Assche , "James E.J. Bottomley" , "Martin K. Petersen" , Abel Vesa , Bjorn Andersson , Neil Armstrong , Konrad Dybcio Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Amit Pundir , Nitin Rawat , Manivannan Sadhasivam , stable@vger.kernel.org, Ram Kumar Dwivedi X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=6268; i=manivannan.sadhasivam@linaro.org; h=from:subject:message-id; bh=Sv4V4lP72bSSLgkPPE0X0h9+uMY2fNRzExFuxTd/oBU=; b=owEBbQGS/pANAwAKAVWfEeb+kc71AcsmYgBnXDxb7oP5rerxn5AN1GGgl0eGejKfGcaFcWqgf yW3X6IAOhuJATMEAAEKAB0WIQRnpUMqgUjL2KRYJ5dVnxHm/pHO9QUCZ1w8WwAKCRBVnxHm/pHO 9Y56B/9HwMY/oBu+OmjNpGOKJDFBMQXkS79rz2KZj/YBNXHImDeR1SIaaBxuPyc2tcyEornXz/8 2WptibUDZ/VqDRx+nksbSmLxX43e8IqdF8UW/+O/RmxEX5/jbO9UpWh0M1G5ejlJkmoZq8Yxoql wrR0rTufz6mjoVL7OoHf7PDXqjqygA39kTygzlgz69YW8udZFAl2mOA1+dCtnBPYHDRbBVPe/iZ 32MNbLZ8IUVNEcJGSC2wyPpC4AFs4z8/NAs8/KAxOtSLWgVgv1BeGWWvSvKjWmk1l9Y5AXhkPW6 gaNmxLrJYbyK64wti7GDzJH3qIJZ4VCEYYBMVKGRz2DkTbGg X-Developer-Key: i=manivannan.sadhasivam@linaro.org; a=openpgp; fpr=C668AEC3C3188E4C611465E7488550E901166008 X-Endpoint-Received: by B4 Relay for manivannan.sadhasivam@linaro.org/default with auth_id=185 X-Original-From: Manivannan Sadhasivam Reply-To: manivannan.sadhasivam@linaro.org From: Manivannan Sadhasivam PHY might already be powered on during ufs_qcom_power_up_sequence() in a couple of cases: 1. During UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH quirk 2. Resuming from spm_lvl = 5 suspend In those cases, it is necessary to call phy_power_off() and phy_exit() in ufs_qcom_power_up_sequence() function to power off the PHY before calling phy_init() and phy_power_on(). Case (1) is doing it via ufs_qcom_reinit_notify() callback, but case (2) is not handled. So to satisfy both cases, call phy_power_off() and phy_exit() if the phy_count is non-zero. And with this change, the reinit_notify() callback is no longer needed. This fixes the below UFS resume failure with spm_lvl = 5: ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5 ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5 ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5 ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5 ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: Enabling the controller failed ufshcd-qcom 1d84000.ufshc: ufshcd_host_reset_and_restore: Host init failed -5 ufs_device_wlun 0:0:0:49488: ufshcd_wl_resume failed: -5 ufs_device_wlun 0:0:0:49488: PM: dpm_run_callback(): scsi_bus_resume returns -5 ufs_device_wlun 0:0:0:49488: PM: failed to resume async: error -5 Cc: stable@vger.kernel.org # 6.3 Fixes: baf5ddac90dc ("scsi: ufs: ufs-qcom: Add support for reinitializing the UFS device") Reported-by: Ram Kumar Dwivedi Tested-by: Amit Pundir # on SM8550-HDK Reviewed-by: Bart Van Assche Signed-off-by: Manivannan Sadhasivam --- drivers/ufs/core/ufshcd-priv.h | 6 ------ drivers/ufs/core/ufshcd.c | 1 - drivers/ufs/host/ufs-qcom.c | 13 +++++-------- include/ufs/ufshcd.h | 2 -- 4 files changed, 5 insertions(+), 17 deletions(-) diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h index 7aea8fbaeee8..1f413b3aab5d 100644 --- a/drivers/ufs/core/ufshcd-priv.h +++ b/drivers/ufs/core/ufshcd-priv.h @@ -236,12 +236,6 @@ static inline void ufshcd_vops_config_scaling_param(struct ufs_hba *hba, hba->vops->config_scaling_param(hba, p, data); } -static inline void ufshcd_vops_reinit_notify(struct ufs_hba *hba) -{ - if (hba->vops && hba->vops->reinit_notify) - hba->vops->reinit_notify(hba); -} - static inline int ufshcd_vops_mcq_config_resource(struct ufs_hba *hba) { if (hba->vops && hba->vops->mcq_config_resource) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 6a2685333076..7bd0f5482db3 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8820,7 +8820,6 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool init_dev_params) ufshcd_device_reset(hba); ufs_put_device_desc(hba); ufshcd_hba_stop(hba); - ufshcd_vops_reinit_notify(hba); ret = ufshcd_hba_enable(hba); if (ret) { dev_err(hba->dev, "Host controller enable failed\n"); diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 3b592492e152..32b0c74437de 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -368,6 +368,11 @@ static int ufs_qcom_power_up_sequence(struct ufs_hba *hba) if (ret) return ret; + if (phy->power_count) { + phy_power_off(phy); + phy_exit(phy); + } + /* phy initialization - calibrate the phy */ ret = phy_init(phy); if (ret) { @@ -1579,13 +1584,6 @@ static void ufs_qcom_config_scaling_param(struct ufs_hba *hba, } #endif -static void ufs_qcom_reinit_notify(struct ufs_hba *hba) -{ - struct ufs_qcom_host *host = ufshcd_get_variant(hba); - - phy_power_off(host->generic_phy); -} - /* Resources */ static const struct ufshcd_res_info ufs_res_info[RES_MAX] = { {.name = "ufs_mem",}, @@ -1825,7 +1823,6 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = { .device_reset = ufs_qcom_device_reset, .config_scaling_param = ufs_qcom_config_scaling_param, .program_key = ufs_qcom_ice_program_key, - .reinit_notify = ufs_qcom_reinit_notify, .mcq_config_resource = ufs_qcom_mcq_config_resource, .get_hba_mac = ufs_qcom_get_hba_mac, .op_runtime_config = ufs_qcom_op_runtime_config, diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index d7aca9e61684..6e40b8e8009b 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -327,7 +327,6 @@ struct ufs_pwr_mode_info { * @program_key: program or evict an inline encryption key * @fill_crypto_prdt: initialize crypto-related fields in the PRDT * @event_notify: called to notify important events - * @reinit_notify: called to notify reinit of UFSHCD during max gear switch * @mcq_config_resource: called to configure MCQ platform resources * @get_hba_mac: reports maximum number of outstanding commands supported by * the controller. Should be implemented for UFSHCI 4.0 or later @@ -379,7 +378,6 @@ struct ufs_hba_variant_ops { void *prdt, unsigned int num_segments); void (*event_notify)(struct ufs_hba *hba, enum ufs_event_type evt, void *data); - void (*reinit_notify)(struct ufs_hba *); int (*mcq_config_resource)(struct ufs_hba *hba); int (*get_hba_mac)(struct ufs_hba *hba); int (*op_runtime_config)(struct ufs_hba *hba); From patchwork Fri Dec 13 13:53:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam via B4 Relay X-Patchwork-Id: 850379 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B9A6E43166; Fri, 13 Dec 2024 13:53:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734098016; cv=none; b=n4cRcB6U0Ir8JIt2at9w84ysTqn1nxGXQd1vGpWlxolibSLbpTbr/nALJIKPgYNlpnWCE7ug9EyXid0bVgpSEdtYHiB3qZzFbY5h1iBdvWMDuhzNGqb/nrXN1yqHMxGKHDDLCaUR9GXa1fXYFYBNuJbpqPmeEQIl9rlTYUANJmM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734098016; c=relaxed/simple; bh=mdHii9nRNOur98TYJL9W/B0MjRM9s+5aXB/CNs8G4jU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=EOC9JgIXSA9QO4gfAi6WXJebrvOLOBF3psGHW4AhMboAzaKLpWXyIfaxwdu2yI1X3ONc00HMBs29KI6cuKi+tGcdlN3CpKeyQLyYj4x0fhwq0zdVT0gFz2MI7Z1xPKdL0YH1AxeuSr555VELbrMypTd1ecD0L4+uSfZ/Dy5E3Jo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=t6T4QING; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="t6T4QING" Received: by smtp.kernel.org (Postfix) with ESMTPS id 92E0EC4CED7; Fri, 13 Dec 2024 13:53:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1734098016; bh=mdHii9nRNOur98TYJL9W/B0MjRM9s+5aXB/CNs8G4jU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=t6T4QINGnsbV7YalJZg23vvtlgJC+vFpBtwEdX6EB7fDhBjNo+bFcBQZhWERZFEbf HcuY/a5edj0r/F27CJbqEyAkLqD30U/5ov321csqpRNEvVPmauQ8XQIRrWwJgiHSuW rTvmRbkk1Lr/OLT66pvmSu/sINLp/015dnWufH9zpTruI2QByyD72LsLN02AP1Ffth nlRBP7R6OaE1yeq/8RJDjS7wCdX2kgXWSxaxjNmMbblGybzO5SBvoB1vHxPHiMe289 2fhnOCWFykGTogNxQvSNKKcHdTc/mV14jHbvTG2/eC43NSiD8DP36ZYw8AMJKmoKVI 4JPI8oCyVkaBQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7F6EDE77182; Fri, 13 Dec 2024 13:53:36 +0000 (UTC) From: Manivannan Sadhasivam via B4 Relay Date: Fri, 13 Dec 2024 19:23:30 +0530 Subject: [PATCH v2 2/3] scsi: ufs: qcom: Allow passing platform specific OF data Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241213-ufs-qcom-suspend-fix-v2-2-1de6cd2d6146@linaro.org> References: <20241213-ufs-qcom-suspend-fix-v2-0-1de6cd2d6146@linaro.org> In-Reply-To: <20241213-ufs-qcom-suspend-fix-v2-0-1de6cd2d6146@linaro.org> To: Alim Akhtar , Avri Altman , Bart Van Assche , "James E.J. Bottomley" , "Martin K. Petersen" , Abel Vesa , Bjorn Andersson , Neil Armstrong , Konrad Dybcio Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Amit Pundir , Nitin Rawat , Manivannan Sadhasivam X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=2709; i=manivannan.sadhasivam@linaro.org; h=from:subject:message-id; bh=qqrxdC5u7a2vZfs8QFNpeAZBHqn1+eO7J3Xdho8U5SY=; b=owEBbQGS/pANAwAKAVWfEeb+kc71AcsmYgBnXDxc+9/I1Jb3eWtP2983AMBHpbG+joy36Ntck aqYAwgqzuGJATMEAAEKAB0WIQRnpUMqgUjL2KRYJ5dVnxHm/pHO9QUCZ1w8XAAKCRBVnxHm/pHO 9aJeB/4jtWCKxXc9qwEo64zElXLbEEQqNkPs8ZnFmOG3ENGVzDQ2g+83YJ8nG/1g8wSuEOBu62N qUDUwnTp4Ts14JmWMiJXz3Wa+lewGZqnxCBupsDRuUZ81AL/z+2e3Z8xj5qiiAbYGGaiuyu+zKJ BrJny0V8yHUkbCsqF3Tg2X8oFBS5TM1IRvPSyZp9yzRK/1ODd/lolElkJ8QBDWS2fzzGyqrMtbU tsmMKYCDb1i8f4dXhs2FmxvxIbzGKARMqpCNTRLWmjecOsIGUYrbNsc+JzGzlvfvmsBIDGaUt2O E81DEi3LOH/iNxMpxb+pXg/MTiRrUiHW8RmuphVT4X46R0km X-Developer-Key: i=manivannan.sadhasivam@linaro.org; a=openpgp; fpr=C668AEC3C3188E4C611465E7488550E901166008 X-Endpoint-Received: by B4 Relay for manivannan.sadhasivam@linaro.org/default with auth_id=185 X-Original-From: Manivannan Sadhasivam Reply-To: manivannan.sadhasivam@linaro.org From: Manivannan Sadhasivam In order to allow platform specific flags and configurations, introduce the platform specific OF data and move the existing quirk UFSHCD_QUIRK_BROKEN_LSDBS_CAP for SM8550 and SM8650 SoCs. Reviewed-by: Avri Altman Reviewed-by: Neil Armstrong Tested-by: Amit Pundir # on SM8550-HDK Reviewed-by: Bart Van Assche Signed-off-by: Manivannan Sadhasivam --- drivers/ufs/host/ufs-qcom.c | 13 +++++++++---- drivers/ufs/host/ufs-qcom.h | 4 ++++ 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 32b0c74437de..35ae8c8fc301 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -871,6 +871,7 @@ static u32 ufs_qcom_get_ufs_hci_version(struct ufs_hba *hba) */ static void ufs_qcom_advertise_quirks(struct ufs_hba *hba) { + const struct ufs_qcom_drvdata *drvdata = of_device_get_match_data(hba->dev); struct ufs_qcom_host *host = ufshcd_get_variant(hba); if (host->hw_ver.major == 0x2) @@ -879,9 +880,8 @@ static void ufs_qcom_advertise_quirks(struct ufs_hba *hba) if (host->hw_ver.major > 0x3) hba->quirks |= UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH; - if (of_device_is_compatible(hba->dev->of_node, "qcom,sm8550-ufshc") || - of_device_is_compatible(hba->dev->of_node, "qcom,sm8650-ufshc")) - hba->quirks |= UFSHCD_QUIRK_BROKEN_LSDBS_CAP; + if (drvdata && drvdata->quirks) + hba->quirks |= drvdata->quirks; } static void ufs_qcom_set_phy_gear(struct ufs_qcom_host *host) @@ -1864,9 +1864,14 @@ static void ufs_qcom_remove(struct platform_device *pdev) platform_device_msi_free_irqs_all(hba->dev); } +static const struct ufs_qcom_drvdata ufs_qcom_sm8550_drvdata = { + .quirks = UFSHCD_QUIRK_BROKEN_LSDBS_CAP, +}; + static const struct of_device_id ufs_qcom_of_match[] __maybe_unused = { { .compatible = "qcom,ufshc" }, - { .compatible = "qcom,sm8550-ufshc" }, + { .compatible = "qcom,sm8550-ufshc", .data = &ufs_qcom_sm8550_drvdata }, + { .compatible = "qcom,sm8650-ufshc", .data = &ufs_qcom_sm8550_drvdata }, {}, }; MODULE_DEVICE_TABLE(of, ufs_qcom_of_match); diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h index b9de170983c9..15f6dad8b27f 100644 --- a/drivers/ufs/host/ufs-qcom.h +++ b/drivers/ufs/host/ufs-qcom.h @@ -217,6 +217,10 @@ struct ufs_qcom_host { bool esi_enabled; }; +struct ufs_qcom_drvdata { + enum ufshcd_quirks quirks; +}; + static inline u32 ufs_qcom_get_debug_reg_offset(struct ufs_qcom_host *host, u32 reg) { From patchwork Fri Dec 13 13:53:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam via B4 Relay X-Patchwork-Id: 850858 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 436D91E1021; Fri, 13 Dec 2024 13:53:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734098017; cv=none; b=przH49Ugaq/i/Rahsil4x3uTBGMIumzihSE9A5K+USlGdiK1+2zh+zrrmlY/BDDwSOCreR2Y1OIU5WyKPrk2dB+PwYsgcWJ5kRj/tkXslxe7WDY3ClPn2u4N52HiPWuRLc9Xf2Hj1bDQn9faXKtWSD82YKOigPde85EqNL2zAlo= ARC-Message-Signature: i=1; a=rsa-sha256; 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b=XXNAEqTQ92uJ4veGQ6SqqDIhvdN2aBWbk8/iULZqM5iMgy5XWi7+b5/wBH/WYs8q4 NQlikAdOn22ZzZMVYfOxRnIiuHkvVB+VJrMky65yRv2lLRagDNE/KDSGXsjuH8NdyH 3jndUqkUS/HUA1RJTS1nu8nRUBC9Vhdr5Z8Tmtrc6HyR9S9++kWWAW229pTTbNE3ur 9G6CitFRMEyKTpVI/OwOh+zBgVW44UypXhbrqiIUO1GKqDMD0RL0JkdOlmdzU+Rs0U VH7ZV1yXVU8TBbdPpIedLc3+qmhiJlLi+i0K2Nq3H1X+GL/aQgmgf6X7mrQrnmJpyf btHzdqpoLSzMg== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 937C8E7717D; Fri, 13 Dec 2024 13:53:36 +0000 (UTC) From: Manivannan Sadhasivam via B4 Relay Date: Fri, 13 Dec 2024 19:23:31 +0530 Subject: [PATCH v2 3/3] scsi: ufs: qcom: Power down the controller/device during system suspend for SM8550/SM8650 SoCs Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241213-ufs-qcom-suspend-fix-v2-3-1de6cd2d6146@linaro.org> References: <20241213-ufs-qcom-suspend-fix-v2-0-1de6cd2d6146@linaro.org> In-Reply-To: <20241213-ufs-qcom-suspend-fix-v2-0-1de6cd2d6146@linaro.org> To: Alim Akhtar , Avri Altman , Bart Van Assche , "James E.J. Bottomley" , "Martin K. Petersen" , Abel Vesa , Bjorn Andersson , Neil Armstrong , Konrad Dybcio Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Amit Pundir , Nitin Rawat , Manivannan Sadhasivam , stable@vger.kernel.org X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=3153; i=manivannan.sadhasivam@linaro.org; h=from:subject:message-id; bh=dm+C1IineBDRJt5UyRNTw/yDrjuto+TzGCEuC82e76E=; b=owGbwMvMwMUYOl/w2b+J574ynlZLYkiPsYk5XdcQFOSdlJb88sca9c9lF9+/U52kUZDiuavBQ jI1S0Ctk9GYhYGRi0FWTJElfamzVqPH6RtLItSnwwxiZQKZwsDFKQATWSPP/s9a+p95776Zt1rF kqQX+kyw0jFp1D954eYuWx4+VgHViTseKmY/c3hR9+i3dN3ZNo1eLo6T/3bVBn5mTJRg0v214/E 27+0zQrnfG5j5h8+QDy8q7dKqc/TOqV7NKebmLVkvuuID/5ED3NOn/N3W32zgFLHK5V69vNUUCf 2VxbV26VJO0kcYZJ7yqGQY6HKWsMTO3pGfujD72vRv9VXdl1udnH6/W6AavC5Z1ox7gckzt9XuM plhFiprrGYHWWxNqZl2a/arq1bfdbp+T6t+lmls+rKH1zEppLl0tW/n4Vs/d9aIhK/98nea6O41 trNsMlz3N4Qr/3z7O4Vtj1iP2aZ37poTr2Q9Fkz14nsIAA== X-Developer-Key: i=manivannan.sadhasivam@linaro.org; a=openpgp; fpr=C668AEC3C3188E4C611465E7488550E901166008 X-Endpoint-Received: by B4 Relay for manivannan.sadhasivam@linaro.org/default with auth_id=185 X-Original-From: Manivannan Sadhasivam Reply-To: manivannan.sadhasivam@linaro.org From: Manivannan Sadhasivam SM8550 and SM8650 SoCs doesn't support UFS PHY retention. So once these SoCs reaches the low power state (CX power collapse) during system suspend, all the PHY hardware state gets lost. This leads to the UFS resume failure: ufshcd-qcom 1d84000.ufs: ufshcd_uic_hibern8_exit: hibern8 exit failed. ret = 5 ufshcd-qcom 1d84000.ufs: __ufshcd_wl_resume: hibern8 exit failed 5 ufs_device_wlun 0:0:0:49488: ufshcd_wl_resume failed: 5 ufs_device_wlun 0:0:0:49488: PM: dpm_run_callback(): scsi_bus_resume+0x0/0x84 returns 5 ufs_device_wlun 0:0:0:49488: PM: failed to resume async: error 5 With the default system suspend level of UFS_PM_LVL_3, the power domain for UFS PHY needs to be kept always ON to retain the state. But this would prevent these SoCs from reaching the CX power collapse state, leading to poor power saving during system suspend. So to fix this issue without affecting the power saving, set 'ufs_qcom_drvdata::no_phy_retention' to true which sets 'hba->spm_lvl' to UFS_PM_LVL_5 to allow both the controller and device (in turn the PHY) to be powered down during system suspend for these SoCs by default. Cc: stable@vger.kernel.org # 6.3 Fixes: 35cf1aaab169 ("arm64: dts: qcom: sm8550: Add UFS host controller and phy nodes") Fixes: 10e024671295 ("arm64: dts: qcom: sm8650: add interconnect dependent device nodes") Reported-by: Neil Armstrong Tested-by: Amit Pundir # on SM8550-HDK Reviewed-by: Bart Van Assche Signed-off-by: Manivannan Sadhasivam --- drivers/ufs/host/ufs-qcom.c | 5 +++++ drivers/ufs/host/ufs-qcom.h | 1 + 2 files changed, 6 insertions(+) diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 35ae8c8fc301..edf62430cabe 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -1069,6 +1069,7 @@ static int ufs_qcom_init(struct ufs_hba *hba) struct device *dev = hba->dev; struct ufs_qcom_host *host; struct ufs_clk_info *clki; + const struct ufs_qcom_drvdata *drvdata = of_device_get_match_data(hba->dev); host = devm_kzalloc(dev, sizeof(*host), GFP_KERNEL); if (!host) @@ -1148,6 +1149,9 @@ static int ufs_qcom_init(struct ufs_hba *hba) dev_warn(dev, "%s: failed to configure the testbus %d\n", __func__, err); + if (drvdata && drvdata->no_phy_retention) + hba->spm_lvl = UFS_PM_LVL_5; + return 0; out_variant_clear: @@ -1866,6 +1870,7 @@ static void ufs_qcom_remove(struct platform_device *pdev) static const struct ufs_qcom_drvdata ufs_qcom_sm8550_drvdata = { .quirks = UFSHCD_QUIRK_BROKEN_LSDBS_CAP, + .no_phy_retention = true, }; static const struct of_device_id ufs_qcom_of_match[] __maybe_unused = { diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h index 15f6dad8b27f..919f53682beb 100644 --- a/drivers/ufs/host/ufs-qcom.h +++ b/drivers/ufs/host/ufs-qcom.h @@ -219,6 +219,7 @@ struct ufs_qcom_host { struct ufs_qcom_drvdata { enum ufshcd_quirks quirks; + bool no_phy_retention; }; static inline u32