linux-kernel - [PATCH 2/5] mmc: mmci: define get_dctrl

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Date:   Mon, 4 Mar 2019 11:17:02 +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  2/5] mmc: mmci: define get_dctrl_cfg for legacy variant

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

This patch defines get_dctrl_cfg callback for legacy variants
whatever DMA_ENGINE configuration.

Signed-off-by: Ludovic Barre <ludovic.barre@...com>
---
 drivers/mmc/host/mmci.c | 38 ++++++++++++++++++++++++++++++++------
 1 file changed, 32 insertions(+), 6 deletions(-)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 387ff14..e1d3f42 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -47,11 +47,8 @@
 
 #define DRIVER_NAME "mmci-pl18x"
 
-#ifdef CONFIG_DMA_ENGINE
 void mmci_variant_init(struct mmci_host *host);
-#else
-static inline void mmci_variant_init(struct mmci_host *host) {}
-#endif
+void mmci_ux500v2_variant_init(struct mmci_host *host);
 
 #ifdef CONFIG_MMC_STM32_SDMMC
 void sdmmc_variant_init(struct mmci_host *host);
@@ -238,7 +235,7 @@ static struct variant_data variant_ux500v2 = {
 	.irq_pio_mask		= MCI_IRQ_PIO_MASK,
 	.start_err		= MCI_STARTBITERR,
 	.opendrain		= MCI_OD,
-	.init			= mmci_variant_init,
+	.init			= mmci_ux500v2_variant_init,
 };
 
 static struct variant_data variant_stm32 = {
@@ -624,6 +621,24 @@ static void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
 	sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);
 }
 
+u32 mmci_get_dctrl_cfg(struct mmci_host *host)
+{
+	struct variant_data *variant = host->variant;
+	int blksz_bits;
+
+	blksz_bits = ffs(host->data->blksz) - 1;
+	BUG_ON(1 << blksz_bits != host->data->blksz);
+
+	return variant->datactrl_dpsm_enable | blksz_bits << 4;
+}
+
+u32 mmci_ux500v2_get_dctrl_cfg(struct mmci_host *host)
+{
+	struct variant_data *variant = host->variant;
+
+	return variant->datactrl_dpsm_enable | (host->data->blksz << 16);
+}
+
 /*
  * All the DMA operation mode stuff goes inside this ifdef.
  * This assumes that you have a generic DMA device interface,
@@ -952,6 +967,7 @@ void mmci_dmae_unprep_data(struct mmci_host *host,
 static struct mmci_host_ops mmci_variant_ops = {
 	.prep_data = mmci_dmae_prep_data,
 	.unprep_data = mmci_dmae_unprep_data,
+	.get_datactrl_cfg = mmci_get_dctrl_cfg,
 	.get_next_data = mmci_dmae_get_next_data,
 	.dma_setup = mmci_dmae_setup,
 	.dma_release = mmci_dmae_release,
@@ -959,12 +975,22 @@ static struct mmci_host_ops mmci_variant_ops = {
 	.dma_finalize = mmci_dmae_finalize,
 	.dma_error = mmci_dmae_error,
 };
+#else
+static struct mmci_host_ops mmci_variant_ops = {
+	.get_datactrl_cfg = mmci_get_dctrl_cfg,
+}
+#endif
 
 void mmci_variant_init(struct mmci_host *host)
 {
 	host->ops = &mmci_variant_ops;
 }
-#endif
+
+void mmci_ux500v2_variant_init(struct mmci_host *host)
+{
+	host->ops = &mmci_variant_ops;
+	host->ops->get_datactrl_cfg = mmci_ux500v2_get_dctrl_cfg;
+}
 
 static void mmci_pre_request(struct mmc_host *mmc, struct mmc_request *mrq)
 {
-- 
2.7.4