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Petersen" Cc: Bart Van Assche , Bean Huo , Peter Wang , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Avri Altman Subject: [PATCH v5 2/3] scsi: ufs: Allow platform vendors to set rtt Date: Thu, 23 May 2024 15:58:25 +0300 Message-ID: <20240523125827.818-3-avri.altman@wdc.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20240523125827.818-1-avri.altman@wdc.com> References: <20240523125827.818-1-avri.altman@wdc.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Allow platform vendors to take precedence having their own rtt negotiation mechanism. This makes sense because the host controller's nortt characteristic may vary among vendors. Signed-off-by: Avri Altman --- drivers/ufs/core/ufshcd.c | 5 ++++- include/ufs/ufshcd.h | 2 ++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 7df8bcacbe7e..d8e0e80d66a5 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8542,7 +8542,10 @@ static int ufshcd_device_params_init(struct ufs_hba *hba) goto out; } - ufshcd_set_rtt(hba); + if (hba->vops && hba->vops->set_rtt) + hba->vops->set_rtt(hba); + else + ufshcd_set_rtt(hba); ufshcd_get_ref_clk_gating_wait(hba); diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index d74bd2d67b06..495b50a72f9f 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -329,6 +329,7 @@ struct ufs_pwr_mode_info { * @get_outstanding_cqs: called to get outstanding completion queues * @config_esi: called to config Event Specific Interrupt * @config_scsi_dev: called to configure SCSI device parameters + * @set_rtt: negotiate rtt */ struct ufs_hba_variant_ops { const char *name; @@ -374,6 +375,7 @@ struct ufs_hba_variant_ops { int (*get_outstanding_cqs)(struct ufs_hba *hba, unsigned long *ocqs); int (*config_esi)(struct ufs_hba *hba); + void (*set_rtt)(struct ufs_hba *hba); }; /* clock gating state */ -- 2.34.1