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spi: stm32: qspi: Fix dual flash mode sanity test in stm32_qspi_setup()

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Misplaced parenthesis make test of mode wrong in case mode is equal to
SPI_TX_OCTAL or SPI_RX_OCTAL.

Simplify this sanity test, if one of this bit is set, property
cs-gpio must be present in DT.

Fixes: a557fca630 ("spi: stm32_qspi: Add transfer_one_message() spi callback")
Cc: stable@vger.kernel.org
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://msgid.link/r/20240618132951.2743935-2-patrice.chotard@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Patrice Chotard 2024-06-18 15:29:49 +02:00 committed by Mark Brown
parent 60980cf5b8
commit c2bd0791c5
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 4 additions and 6 deletions
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10
drivers/spi/spi-stm32-qspi.c
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@ -653,9 +653,7 @@ static int stm32_qspi_setup(struct spi_device *spi)
return -EINVAL;
mode = spi->mode & (SPI_TX_OCTAL | SPI_RX_OCTAL);
if ((mode == SPI_TX_OCTAL || mode == SPI_RX_OCTAL) ||
((mode == (SPI_TX_OCTAL | SPI_RX_OCTAL)) &&
gpiod_count(qspi->dev, "cs") == -ENOENT)) {
if (mode && gpiod_count(qspi->dev, "cs") == -ENOENT) {
dev_err(qspi->dev, "spi-rx-bus-width\\/spi-tx-bus-width\\/cs-gpios\n");
dev_err(qspi->dev, "configuration not supported\n");
@ -676,10 +674,10 @@ static int stm32_qspi_setup(struct spi_device *spi)
qspi->cr_reg = CR_APMS | 3 << CR_FTHRES_SHIFT | CR_SSHIFT | CR_EN;
/*
* Dual flash mode is only enable in case SPI_TX_OCTAL and SPI_TX_OCTAL
* are both set in spi->mode and "cs-gpios" properties is found in DT
* Dual flash mode is only enable in case SPI_TX_OCTAL or SPI_RX_OCTAL
* is set in spi->mode and "cs-gpios" properties is found in DT
*/
if (mode == (SPI_TX_OCTAL | SPI_RX_OCTAL)) {
if (mode) {
qspi->cr_reg |= CR_DFM;
dev_dbg(qspi->dev, "Dual flash mode enable");
}