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[89.207.88.243]) by smtp.gmail.com with ESMTPSA id a19-20020ac25e73000000b005135bd71d6fsm286538lfr.276.2024.03.14.07.14.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Mar 2024 07:14:42 -0700 (PDT) From: Sergey Khimich To: linux-kernel@vger.kernel.org Cc: linux-mmc@vger.kernel.org, Ulf Hansson , Adrian Hunter , Shawn Lin , Jyan Chou Subject: [PATCH v6 1/2] mmc: cqhci: Add cqhci set_tran_desc() callback Date: Thu, 14 Mar 2024 17:14:39 +0300 Message-Id: <20240314141440.3305802-2-serghox@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20240314141440.3305802-1-serghox@gmail.com> References: <20240314141440.3305802-1-serghox@gmail.com> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Sergey Khimich There are could be specific limitations for some mmc controllers for setting cqhci transfer descriptors. So add callback to allow implement driver specific function. Signed-off-by: Sergey Khimich --- drivers/mmc/host/cqhci-core.c | 11 ++++++++--- drivers/mmc/host/cqhci.h | 4 ++++ 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/host/cqhci-core.c b/drivers/mmc/host/cqhci-core.c index 41e94cd14109..c14d7251d0bb 100644 --- a/drivers/mmc/host/cqhci-core.c +++ b/drivers/mmc/host/cqhci-core.c @@ -474,8 +474,8 @@ static int cqhci_dma_map(struct mmc_host *host, struct mmc_request *mrq) return sg_count; } -static void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, - bool dma64) +void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, + bool dma64) { __le32 *attr = (__le32 __force *)desc; @@ -495,6 +495,7 @@ static void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, dataddr[0] = cpu_to_le32(addr); } } +EXPORT_SYMBOL(cqhci_set_tran_desc); static int cqhci_prep_tran_desc(struct mmc_request *mrq, struct cqhci_host *cq_host, int tag) @@ -522,7 +523,11 @@ static int cqhci_prep_tran_desc(struct mmc_request *mrq, if ((i+1) == sg_count) end = true; - cqhci_set_tran_desc(desc, addr, len, end, dma64); + if (cq_host->ops->set_tran_desc) + cq_host->ops->set_tran_desc(cq_host, &desc, addr, len, end, dma64); + else + cqhci_set_tran_desc(desc, addr, len, end, dma64); + desc += cq_host->trans_desc_len; } diff --git a/drivers/mmc/host/cqhci.h b/drivers/mmc/host/cqhci.h index 1a12e40a02e6..fab9d74445ba 100644 --- a/drivers/mmc/host/cqhci.h +++ b/drivers/mmc/host/cqhci.h @@ -293,6 +293,9 @@ struct cqhci_host_ops { int (*program_key)(struct cqhci_host *cq_host, const union cqhci_crypto_cfg_entry *cfg, int slot); #endif + void (*set_tran_desc)(struct cqhci_host *cq_host, u8 **desc, + dma_addr_t addr, int len, bool end, bool dma64); + }; static inline void cqhci_writel(struct cqhci_host *host, u32 val, int reg) @@ -318,6 +321,7 @@ irqreturn_t cqhci_irq(struct mmc_host *mmc, u32 intmask, int cmd_error, int cqhci_init(struct cqhci_host *cq_host, struct mmc_host *mmc, bool dma64); struct cqhci_host *cqhci_pltfm_init(struct platform_device *pdev); int cqhci_deactivate(struct mmc_host *mmc); +void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, bool dma64); static inline int cqhci_suspend(struct mmc_host *mmc) { return cqhci_deactivate(mmc);