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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 V4 5/5] mmc: mmci: replace blksz_datactrlXX by get_datactrl_cfg callback
Date:   Wed, 27 Mar 2019 10:05:32 +0100
Message-ID: <1553677532-3539-6-git-send-email-ludovic.Barre@st.com>
In-Reply-To: <1553677532-3539-1-git-send-email-ludovic.Barre@st.com>
References: <1553677532-3539-1-git-send-email-ludovic.Barre@st.com>
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From: Ludovic Barre <ludovic.barre@st.com>

This patch allows to get datactrl configuration specific
at variant. This introduce more flexibility on datactlr
value.

Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
---
 drivers/mmc/host/mmci.c | 26 ++------------------------
 drivers/mmc/host/mmci.h |  7 -------
 2 files changed, 2 insertions(+), 31 deletions(-)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index a818511..5b2cf77 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -60,7 +60,6 @@ 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,
@@ -80,7 +79,6 @@ 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,
@@ -100,7 +98,6 @@ 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,
@@ -121,7 +118,6 @@ 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,
@@ -147,7 +143,6 @@ 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,
@@ -176,7 +171,6 @@ 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,
@@ -210,11 +204,9 @@ 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,
-	.blksz_datactrl16	= true,
 	.pwrreg_powerup		= MCI_PWR_ON,
 	.f_max			= 100000000,
 	.signal_direction	= true,
@@ -245,7 +237,6 @@ static struct variant_data variant_stm32 = {
 	.irq_pio_mask		= MCI_IRQ_PIO_MASK,
 	.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,
@@ -289,10 +280,8 @@ static struct variant_data variant_qcom = {
 	.cmdreg_srsp_crc	= MCI_CPSM_RESPONSE,
 	.cmdreg_srsp		= MCI_CPSM_RESPONSE,
 	.data_cmd_enable	= MCI_CPSM_QCOM_DATCMD,
-	.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,
@@ -1007,7 +996,6 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
 	unsigned int datactrl, timeout, irqmask;
 	unsigned long long clks;
 	void __iomem *base;
-	int blksz_bits;
 
 	dev_dbg(mmc_dev(host->mmc), "blksz %04x blks %04x flags %08x\n",
 		data->blksz, data->blocks, data->flags);
@@ -1025,18 +1013,8 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
 	writel(timeout, base + MMCIDATATIMER);
 	writel(host->size, base + MMCIDATALENGTH);
 
-	blksz_bits = ffs(data->blksz) - 1;
-	BUG_ON(1 << blksz_bits != data->blksz);
-
-	if (variant->blksz_datactrl16)
-		datactrl = variant->datactrl_dpsm_enable | (data->blksz << 16);
-	else if (variant->blksz_datactrl4)
-		datactrl = variant->datactrl_dpsm_enable | (data->blksz << 4);
-	else
-		datactrl = variant->datactrl_dpsm_enable | blksz_bits << 4;
-
-	if (data->flags & MMC_DATA_READ)
-		datactrl |= MCI_DPSM_DIRECTION;
+	datactrl = host->ops->get_datactrl_cfg(host);
+	datactrl |= host->data->flags & MMC_DATA_READ ? MCI_DPSM_DIRECTION : 0;
 
 	if (host->mmc->card && mmc_card_sdio(host->mmc->card)) {
 		u32 clk;
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 82e9f94..4f071bd 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -280,12 +280,8 @@ struct mmci_host;
  * @st_clkdiv: true if using a ST-specific clock divider algorithm
  * @stm32_clkdiv: true if using a STM32-specific clock divider algorithm
  * @datactrl_mask_ddrmode: ddr mode mask in datactrl register.
- * @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register
- * @blksz_datactrl4: true if Block size is at b4..b16 position in datactrl
- *		     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
  * @datactrl_first: true if data must be setup before send command
  * @datacnt_useless: true if you could not use datacnt register to read
  *		     remaining data
@@ -330,14 +326,11 @@ struct variant_data {
 	unsigned int		datactrl_mask_ddrmode;
 	unsigned int		datactrl_mask_sdio;
 	unsigned int		datactrl_blocksz;
-	unsigned int		datactrl_dpsm_enable;
 	u8			datactrl_first:1;
 	u8			datacnt_useless:1;
 	u8			st_sdio:1;
 	u8			st_clkdiv:1;
 	u8			stm32_clkdiv:1;
-	u8			blksz_datactrl16:1;
-	u8			blksz_datactrl4:1;
 	u32			pwrreg_powerup;
 	u32			f_max;
 	u8			signal_direction:1;
-- 
2.7.4