[v10,10/13] spi: mxic: Create a helper to configure the controller before an operation

Commit Message

Miquel Raynal Jan. 27, 2022, 9:18 a.m. UTC

Create the mxic_spi_set_hc_cfg() helper to configure the HC_CFG
register. This helper will soon be used by the dirmap implementation and
having this code factorized out earlier will clarify this addition.

Signed-off-by: Miquel Raynal <[e-mail]>
Reviewed-by: Mark Brown <[e-mail]>
Link: https://lore.kernel.org/linux-mtd/[e-mail]
---
 drivers/spi/spi-mxic.c | 31 +++++++++++++++++++------------
 1 file changed, 19 insertions(+), 12 deletions(-)

Comments

Miquel Raynal Jan. 31, 2022, 4:22 p.m. UTC | #1

On Thu, 2022-01-27 at 09:18:05 UTC, Miquel Raynal wrote:
> Create the mxic_spi_set_hc_cfg() helper to configure the HC_CFG
> register. This helper will soon be used by the dirmap implementation and
> having this code factorized out earlier will clarify this addition.
> 
> Signed-off-by: Miquel Raynal <[e-mail]>
> Reviewed-by: Mark Brown <[e-mail]>
> Link: https://lore.kernel.org/linux-mtd/[e-mail]

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git spi-mem-ecc.

Miquel

Patch

diff --git a/drivers/spi/spi-mxic.c b/drivers/spi/spi-mxic.c
index 22a82f5f74b5..c45f949a864d 100644
--- a/drivers/spi/spi-mxic.c
+++ b/drivers/spi/spi-mxic.c
@@ -280,6 +280,22 @@  static void mxic_spi_hw_init(struct mxic_spi *mxic)
 	       mxic->regs + HC_CFG);
 }
 
+static u32 mxic_spi_prep_hc_cfg(struct spi_device *spi, u32 flags)
+{
+	int nio = 1;
+
+	if (spi->mode & (SPI_TX_OCTAL | SPI_RX_OCTAL))
+		nio = 8;
+	else if (spi->mode & (SPI_TX_QUAD | SPI_RX_QUAD))
+		nio = 4;
+	else if (spi->mode & (SPI_TX_DUAL | SPI_RX_DUAL))
+		nio = 2;
+
+	return flags | HC_CFG_NIO(nio) |
+	       HC_CFG_TYPE(spi->chip_select, HC_CFG_TYPE_SPI_NOR) |
+	       HC_CFG_SLV_ACT(spi->chip_select) | HC_CFG_IDLE_SIO_LVL(1);
+}
+
 static int mxic_spi_data_xfer(struct mxic_spi *mxic, const void *txbuf,
 			      void *rxbuf, unsigned int len)
 {
@@ -349,7 +365,7 @@  static int mxic_spi_mem_exec_op(struct spi_mem *mem,
 				const struct spi_mem_op *op)
 {
 	struct mxic_spi *mxic = spi_master_get_devdata(mem->spi->master);
-	int nio = 1, i, ret;
+	int i, ret;
 	u32 ss_ctrl;
 	u8 addr[8], cmd[2];
 
@@ -357,18 +373,9 @@  static int mxic_spi_mem_exec_op(struct spi_mem *mem,
 	if (ret)
 		return ret;
 
-	if (mem->spi->mode & (SPI_TX_OCTAL | SPI_RX_OCTAL))
-		nio = 8;
-	else if (mem->spi->mode & (SPI_TX_QUAD | SPI_RX_QUAD))
-		nio = 4;
-	else if (mem->spi->mode & (SPI_TX_DUAL | SPI_RX_DUAL))
-		nio = 2;
-
-	writel(HC_CFG_NIO(nio) |
-	       HC_CFG_TYPE(mem->spi->chip_select, HC_CFG_TYPE_SPI_NOR) |
-	       HC_CFG_SLV_ACT(mem->spi->chip_select) | HC_CFG_IDLE_SIO_LVL(1) |
-	       HC_CFG_MAN_CS_EN,
+	writel(mxic_spi_prep_hc_cfg(mem->spi, HC_CFG_MAN_CS_EN),
 	       mxic->regs + HC_CFG);
+
 	writel(HC_EN_BIT, mxic->regs + HC_EN);
 
 	ss_ctrl = OP_CMD_BYTES(op->cmd.nbytes) |