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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 V6 15/23] mmc: mmci: add variant property to define irq pio mask
Date:   Mon, 8 Oct 2018 14:08:47 +0200
Message-ID: <1539000535-13261-16-git-send-email-ludovic.Barre@st.com>
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From: Ludovic Barre <ludovic.barre@st.com>

This patch allows to define specific pio mask for variants.
Needed to support the STM32 sdmmc variant which has some bits
with different meaning (bits: 21,20,13,12,9)

Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
---
 drivers/mmc/host/mmci.c | 13 +++++++++++--
 drivers/mmc/host/mmci.h |  5 ++++-
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 0443b3a..ca442fb 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -67,6 +67,7 @@ static struct variant_data variant_arm = {
 	.f_max			= 100000000,
 	.reversed_irq_handling	= true,
 	.mmcimask1		= true,
+	.irq_pio_mask		= MCI_IRQ_PIO_MASK,
 	.start_err		= MCI_STARTBITERR,
 	.opendrain		= MCI_ROD,
 	.init			= mmci_variant_init,
@@ -85,6 +86,7 @@ static struct variant_data variant_arm_extended_fifo = {
 	.pwrreg_powerup		= MCI_PWR_UP,
 	.f_max			= 100000000,
 	.mmcimask1		= true,
+	.irq_pio_mask		= MCI_IRQ_PIO_MASK,
 	.start_err		= MCI_STARTBITERR,
 	.opendrain		= MCI_ROD,
 	.init			= mmci_variant_init,
@@ -104,6 +106,7 @@ static struct variant_data variant_arm_extended_fifo_hwfc = {
 	.pwrreg_powerup		= MCI_PWR_UP,
 	.f_max			= 100000000,
 	.mmcimask1		= true,
+	.irq_pio_mask		= MCI_IRQ_PIO_MASK,
 	.start_err		= MCI_STARTBITERR,
 	.opendrain		= MCI_ROD,
 	.init			= mmci_variant_init,
@@ -129,6 +132,7 @@ static struct variant_data variant_u300 = {
 	.pwrreg_clkgate		= true,
 	.pwrreg_nopower		= true,
 	.mmcimask1		= true,
+	.irq_pio_mask		= MCI_IRQ_PIO_MASK,
 	.start_err		= MCI_STARTBITERR,
 	.opendrain		= MCI_OD,
 	.init			= mmci_variant_init,
@@ -155,6 +159,7 @@ static struct variant_data variant_nomadik = {
 	.pwrreg_clkgate		= true,
 	.pwrreg_nopower		= true,
 	.mmcimask1		= true,
+	.irq_pio_mask		= MCI_IRQ_PIO_MASK,
 	.start_err		= MCI_STARTBITERR,
 	.opendrain		= MCI_OD,
 	.init			= mmci_variant_init,
@@ -187,6 +192,7 @@ static struct variant_data variant_ux500 = {
 	.busy_detect_mask	= MCI_ST_BUSYENDMASK,
 	.pwrreg_nopower		= true,
 	.mmcimask1		= true,
+	.irq_pio_mask		= MCI_IRQ_PIO_MASK,
 	.start_err		= MCI_STARTBITERR,
 	.opendrain		= MCI_OD,
 	.init			= mmci_variant_init,
@@ -221,6 +227,7 @@ static struct variant_data variant_ux500v2 = {
 	.busy_detect_mask	= MCI_ST_BUSYENDMASK,
 	.pwrreg_nopower		= true,
 	.mmcimask1		= true,
+	.irq_pio_mask		= MCI_IRQ_PIO_MASK,
 	.start_err		= MCI_STARTBITERR,
 	.opendrain		= MCI_OD,
 	.init			= mmci_variant_init,
@@ -237,6 +244,7 @@ static struct variant_data variant_stm32 = {
 	.cmdreg_lrsp_crc	= MCI_CPSM_RESPONSE | MCI_CPSM_LONGRSP,
 	.cmdreg_srsp_crc	= MCI_CPSM_RESPONSE,
 	.cmdreg_srsp		= MCI_CPSM_RESPONSE,
+	.irq_pio_mask		= MCI_IRQ_PIO_MASK,
 	.datalength_bits	= 24,
 	.datactrl_blocksz	= 11,
 	.datactrl_dpsm_enable	= MCI_DPSM_ENABLE,
@@ -273,6 +281,7 @@ static struct variant_data variant_qcom = {
 	.qcom_fifo		= true,
 	.qcom_dml		= true,
 	.mmcimask1		= true,
+	.irq_pio_mask		= MCI_IRQ_PIO_MASK,
 	.start_err		= MCI_STARTBITERR,
 	.opendrain		= MCI_ROD,
 	.init			= qcom_variant_init,
@@ -556,7 +565,7 @@ static void mmci_set_mask1(struct mmci_host *host, unsigned int mask)
 	if (host->singleirq) {
 		unsigned int mask0 = readl(base + MMCIMASK0);
 
-		mask0 &= ~MCI_IRQ1MASK;
+		mask0 &= ~variant->irq_pio_mask;
 		mask0 |= mask;
 
 		writel(mask0, base + MMCIMASK0);
@@ -1458,7 +1467,7 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
 			if (status & host->mask1_reg)
 				mmci_pio_irq(irq, dev_id);
 
-			status &= ~MCI_IRQ1MASK;
+			status &= ~host->variant->irq_pio_mask;
 		}
 
 		/*
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 04d021e..783a7ad 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -186,7 +186,7 @@
 	MCI_CMDRESPENDMASK | MCI_CMDSENTMASK)
 
 /* These interrupts are directed to IRQ1 when two IRQ lines are available */
-#define MCI_IRQ1MASK \
+#define MCI_IRQ_PIO_MASK \
 	(MCI_RXFIFOHALFFULLMASK | MCI_RXDATAAVLBLMASK | \
 	 MCI_TXFIFOHALFEMPTYMASK)
 
@@ -239,6 +239,8 @@ struct mmci_host;
  * @qcom_dml: enables qcom specific dma glue for dma transfers.
  * @reversed_irq_handling: handle data irq before cmd irq.
  * @mmcimask1: true if variant have a MMCIMASK1 register.
+ * @irq_pio_mask: bitmask used to manage interrupt pio transfert in mmcimask
+ *		  register
  * @start_err: bitmask identifying the STARTBITERR bit inside MMCISTATUS
  *	       register.
  * @opendrain: bitmask identifying the OPENDRAIN bit inside MMCIPOWER register
@@ -278,6 +280,7 @@ struct variant_data {
 	u8			qcom_dml:1;
 	u8			reversed_irq_handling:1;
 	u8			mmcimask1:1;
+	unsigned int		irq_pio_mask;
 	u32			start_err;
 	u32			opendrain;
 	void (*init)(struct mmci_host *host);
-- 
2.7.4