linux-kernel - [PATCH V3 1/5] mmc: mmci: add get_datactrl

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Date:   Tue, 26 Mar 2019 10:11:06 +0100
From:   Ludovic Barre <ludovic.Barre@...com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     <srinivas.kandagatla@...aro.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-mmc@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Ludovic Barre <ludovic.barre@...com>
Subject: [PATCH V3 1/5] mmc: mmci: add get_datactrl_cfg callback and helper functions

From: Ludovic Barre <ludovic.barre@...com>

This patch adds get_datactrl_cfg callback in mmci_host_ops
to allow to get datactrl configuration specific at variant.
Common helper function is defined and could be call by variant.

Signed-off-by: Ludovic Barre <ludovic.barre@...com>
---
 drivers/mmc/host/mmci.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 6bde28c..35c91d0 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -362,6 +362,7 @@ struct mmci_host_ops {
 			 bool next);
 	void (*unprep_data)(struct mmci_host *host, struct mmc_data *data,
 			    int err);
+	u32 (*get_datactrl_cfg)(struct mmci_host *host);
 	void (*get_next_data)(struct mmci_host *host, struct mmc_data *data);
 	int (*dma_setup)(struct mmci_host *host);
 	void (*dma_release)(struct mmci_host *host);
@@ -429,6 +430,11 @@ struct mmci_host {
 void mmci_write_clkreg(struct mmci_host *host, u32 clk);
 void mmci_write_pwrreg(struct mmci_host *host, u32 pwr);
 
+static inline u32 mmci_dctrl_blksz(struct mmci_host *host)
+{
+	return (ffs(host->data->blksz) - 1) << 4;
+}
+
 #ifdef CONFIG_DMA_ENGINE
 int mmci_dmae_prep_data(struct mmci_host *host, struct mmc_data *data,
 			bool next);
-- 
2.7.4