From: Ludovic Barre <ludovic.Barre@st.com>
To: Ulf Hansson <ulf.hansson@linaro.org>, Rob Herring <robh+dt@kernel.org>
Cc: <srinivas.kandagatla@linaro.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-mmc@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
Ludovic Barre <ludovic.barre@st.com>
Subject: [PATCH V4 4/5] mmc: mmci: stm32: define get_dctrl_cfg
Date: Wed, 27 Mar 2019 10:05:31 +0100 [thread overview]
Message-ID: <1553677532-3539-5-git-send-email-ludovic.Barre@st.com> (raw)
In-Reply-To: <1553677532-3539-1-git-send-email-ludovic.Barre@st.com>
From: Ludovic Barre <ludovic.barre@st.com>
This patch defines get_dctrl_cfg callback for sdmmc variant.
sdmmc variant has specific stm32 transfer modes.
sdmmc data transfer mode selection could be:
-Block data transfer ending on block count.
-SDIO multibyte data transfer.
-MMC Stream data transfer (not used).
-Block data transfer ending with STOP_TRANSMISSION command.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
---
drivers/mmc/host/mmci.h | 5 +++++
drivers/mmc/host/mmci_stm32_sdmmc.c | 18 ++++++++++++++++++
2 files changed, 23 insertions(+)
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 35c91d0..82e9f94 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -131,6 +131,11 @@
/* Control register extensions in the Qualcomm versions */
#define MCI_DPSM_QCOM_DATA_PEND BIT(17)
#define MCI_DPSM_QCOM_RX_DATA_PEND BIT(20)
+/* Control register extensions in STM32 versions */
+#define MCI_DPSM_STM32_MODE_BLOCK (0 << 2)
+#define MCI_DPSM_STM32_MODE_SDIO (1 << 2)
+#define MCI_DPSM_STM32_MODE_STREAM (2 << 2)
+#define MCI_DPSM_STM32_MODE_BLOCK_STOP (3 << 2)
#define MMCIDATACNT 0x030
#define MMCISTATUS 0x034
diff --git a/drivers/mmc/host/mmci_stm32_sdmmc.c b/drivers/mmc/host/mmci_stm32_sdmmc.c
index cfbfc6f..8e83ae6 100644
--- a/drivers/mmc/host/mmci_stm32_sdmmc.c
+++ b/drivers/mmc/host/mmci_stm32_sdmmc.c
@@ -265,10 +265,28 @@ static void mmci_sdmmc_set_pwrreg(struct mmci_host *host, unsigned int pwr)
}
}
+static u32 sdmmc_get_dctrl_cfg(struct mmci_host *host)
+{
+ u32 datactrl;
+
+ datactrl = mmci_dctrl_blksz(host);
+
+ if (host->mmc->card && mmc_card_sdio(host->mmc->card) &&
+ host->data->blocks == 1)
+ datactrl |= MCI_DPSM_STM32_MODE_SDIO;
+ else if (host->data->stop && !host->mrq->sbc)
+ datactrl |= MCI_DPSM_STM32_MODE_BLOCK_STOP;
+ else
+ datactrl |= MCI_DPSM_STM32_MODE_BLOCK;
+
+ return datactrl;
+}
+
static struct mmci_host_ops sdmmc_variant_ops = {
.validate_data = sdmmc_idma_validate_data,
.prep_data = sdmmc_idma_prep_data,
.unprep_data = sdmmc_idma_unprep_data,
+ .get_datactrl_cfg = sdmmc_get_dctrl_cfg,
.dma_setup = sdmmc_idma_setup,
.dma_start = sdmmc_idma_start,
.dma_finalize = sdmmc_idma_finalize,
--
2.7.4
next prev parent reply other threads:[~2019-03-27 9:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-27 9:05 [PATCH V4 0/5] mmc: mmci: add get_datactrl_cfg callback Ludovic Barre
2019-03-27 9:05 ` [PATCH V4 1/5] mmc: mmci: add get_datactrl_cfg callback and helper functions Ludovic Barre
2019-03-27 9:05 ` [PATCH V4 2/5] mmc: mmci: define get_dctrl_cfg for legacy variant Ludovic Barre
2019-03-27 9:05 ` [PATCH V4 3/5] mmc: mmci: qcom: define get_dctrl_cfg Ludovic Barre
2019-03-27 9:05 ` Ludovic Barre [this message]
2019-03-27 10:54 ` [PATCH V4 4/5] mmc: mmci: stm32: " Ulf Hansson
2019-03-27 14:44 ` Ludovic BARRE
2019-03-27 14:47 ` Ulf Hansson
2019-03-27 9:05 ` [PATCH V4 5/5] mmc: mmci: replace blksz_datactrlXX by get_datactrl_cfg callback Ludovic Barre
2019-03-28 12:52 ` [PATCH V4 0/5] mmc: mmci: add " Ulf Hansson
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