linux-kernel - [PATCH V4 16/25] mmc: mmci: add variant property to define dpsm bit

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Date:   Tue, 2 Oct 2018 14:09:18 +0200
From:   Ludovic Barre <ludovic.Barre@...com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        <benjamin.gaignard@...aro.org>, Gerald Baeza <gerald.baeza@...com>,
        Loic Pallardy <loic.pallardy@...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 V4 16/25] mmc: mmci: add variant property to define dpsm bit

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

This patch adds datactrl variant property to define
dpsm enable bit. Needed to support the STM32 variant
(STM32 has no dpsm enable bit).

Signed-off-by: Ludovic Barre <ludovic.barre@...com>
---
 drivers/mmc/host/mmci.c | 15 ++++++++++++---
 drivers/mmc/host/mmci.h |  2 ++
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 00a9244..97b0f5c 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -56,6 +56,7 @@ static struct variant_data variant_arm = {
 	.cmdreg_srsp		= MCI_CPSM_RESPONSE,
 	.datalength_bits	= 16,
 	.datactrl_blocksz	= 11,
+	.datactrl_dpsm_enable	= MCI_DPSM_ENABLE,
 	.pwrreg_powerup		= MCI_PWR_UP,
 	.f_max			= 100000000,
 	.reversed_irq_handling	= true,
@@ -74,6 +75,7 @@ static struct variant_data variant_arm_extended_fifo = {
 	.cmdreg_srsp		= MCI_CPSM_RESPONSE,
 	.datalength_bits	= 16,
 	.datactrl_blocksz	= 11,
+	.datactrl_dpsm_enable	= MCI_DPSM_ENABLE,
 	.pwrreg_powerup		= MCI_PWR_UP,
 	.f_max			= 100000000,
 	.mmcimask1		= true,
@@ -92,6 +94,7 @@ static struct variant_data variant_arm_extended_fifo_hwfc = {
 	.cmdreg_srsp		= MCI_CPSM_RESPONSE,
 	.datalength_bits	= 16,
 	.datactrl_blocksz	= 11,
+	.datactrl_dpsm_enable	= MCI_DPSM_ENABLE,
 	.pwrreg_powerup		= MCI_PWR_UP,
 	.f_max			= 100000000,
 	.mmcimask1		= true,
@@ -111,6 +114,7 @@ static struct variant_data variant_u300 = {
 	.cmdreg_srsp		= MCI_CPSM_RESPONSE,
 	.datalength_bits	= 16,
 	.datactrl_blocksz	= 11,
+	.datactrl_dpsm_enable	= MCI_DPSM_ENABLE,
 	.datactrl_mask_sdio	= MCI_DPSM_ST_SDIOEN,
 	.st_sdio			= true,
 	.pwrreg_powerup		= MCI_PWR_ON,
@@ -135,6 +139,7 @@ static struct variant_data variant_nomadik = {
 	.cmdreg_srsp		= MCI_CPSM_RESPONSE,
 	.datalength_bits	= 24,
 	.datactrl_blocksz	= 11,
+	.datactrl_dpsm_enable	= MCI_DPSM_ENABLE,
 	.datactrl_mask_sdio	= MCI_DPSM_ST_SDIOEN,
 	.st_sdio		= true,
 	.st_clkdiv		= true,
@@ -162,6 +167,7 @@ static struct variant_data variant_ux500 = {
 	.cmdreg_srsp		= MCI_CPSM_RESPONSE,
 	.datalength_bits	= 24,
 	.datactrl_blocksz	= 11,
+	.datactrl_dpsm_enable	= MCI_DPSM_ENABLE,
 	.datactrl_mask_sdio	= MCI_DPSM_ST_SDIOEN,
 	.st_sdio		= true,
 	.st_clkdiv		= true,
@@ -194,6 +200,7 @@ static struct variant_data variant_ux500v2 = {
 	.datactrl_mask_ddrmode	= MCI_DPSM_ST_DDRMODE,
 	.datalength_bits	= 24,
 	.datactrl_blocksz	= 11,
+	.datactrl_dpsm_enable	= MCI_DPSM_ENABLE,
 	.datactrl_mask_sdio	= MCI_DPSM_ST_SDIOEN,
 	.st_sdio		= true,
 	.st_clkdiv		= true,
@@ -226,6 +233,7 @@ static struct variant_data variant_stm32 = {
 	.cmdreg_srsp		= MCI_CPSM_RESPONSE,
 	.datalength_bits	= 24,
 	.datactrl_blocksz	= 11,
+	.datactrl_dpsm_enable	= MCI_DPSM_ENABLE,
 	.datactrl_mask_sdio	= MCI_DPSM_ST_SDIOEN,
 	.st_sdio		= true,
 	.st_clkdiv		= true,
@@ -252,6 +260,7 @@ static struct variant_data variant_qcom = {
 	.blksz_datactrl4	= true,
 	.datalength_bits	= 24,
 	.datactrl_blocksz	= 11,
+	.datactrl_dpsm_enable	= MCI_DPSM_ENABLE,
 	.pwrreg_powerup		= MCI_PWR_UP,
 	.f_max			= 208000000,
 	.explicit_mclk_control	= true,
@@ -971,11 +980,11 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
 	BUG_ON(1 << blksz_bits != data->blksz);
 
 	if (variant->blksz_datactrl16)
-		datactrl = MCI_DPSM_ENABLE | (data->blksz << 16);
+		datactrl = variant->datactrl_dpsm_enable | (data->blksz << 16);
 	else if (variant->blksz_datactrl4)
-		datactrl = MCI_DPSM_ENABLE | (data->blksz << 4);
+		datactrl = variant->datactrl_dpsm_enable | (data->blksz << 4);
 	else
-		datactrl = MCI_DPSM_ENABLE | blksz_bits << 4;
+		datactrl = variant->datactrl_dpsm_enable | blksz_bits << 4;
 
 	if (data->flags & MMC_DATA_READ)
 		datactrl |= MCI_DPSM_DIRECTION;
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index e49aba3..bd89745 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -222,6 +222,7 @@ struct mmci_host;
  *		     register
  * @datactrl_mask_sdio: SDIO enable mask in datactrl register
  * @datactrl_blksz: block size in power of two
+ * @datactrl_dpsm_enable: enable value for DPSM
  * @pwrreg_powerup: power up value for MMCIPOWER register
  * @f_max: maximum clk frequency supported by the controller.
  * @signal_direction: input/out direction of bus signals can be indicated
@@ -258,6 +259,7 @@ struct variant_data {
 	unsigned int		datactrl_mask_ddrmode;
 	unsigned int		datactrl_mask_sdio;
 	unsigned int		datactrl_blocksz;
+	unsigned int		datactrl_dpsm_enable;
 	u8			st_sdio:1;
 	u8			st_clkdiv:1;
 	u8			blksz_datactrl16:1;
-- 
2.7.4