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Message-Id: <20231229101128.392089-2-serghox@gmail.com>
Date: Fri, 29 Dec 2023 13:11:27 +0300
From: Sergey Khimich <serghox@...il.com>
To: linux-mmc@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
Adrian Hunter <adrian.hunter@...el.com>,
Ulf Hansson <ulf.hansson@...aro.org>,
Shawn Lin <shawn.lin@...k-chips.com>,
Jyan Chou <jyanchou@...ltek.com>
Subject: [PATCH v4 1/2] mmc: cqhci: Add cqhci set_tran_desc() callback
From: Sergey Khimich <serghox@...il.com>
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 <serghox@...il.com>
---
drivers/mmc/host/cqhci-core.c | 10 +++++++---
drivers/mmc/host/cqhci.h | 5 +++++
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..d12870b124cc 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;
@@ -522,7 +522,11 @@ 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..703d5af6c49e 100644
--- a/drivers/mmc/host/cqhci.h
+++ b/drivers/mmc/host/cqhci.h
@@ -217,6 +217,7 @@ struct cqhci_host_ops;
struct mmc_host;
struct mmc_request;
struct cqhci_slot;
+struct mmc_data;
struct cqhci_host {
const struct cqhci_host_ops *ops;
@@ -293,6 +294,9 @@ 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 +322,7 @@ 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);
--
2.30.2
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