| Message ID | 8dcce41a69a89cb8ace2587ca7ddb1c665f2d1cb.1717539384.git.marcelo.schmitt@analog.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add support for AD4000 series of ADCs | expand |
On Tue, 2024-06-04 at 19:42 -0300, Marcelo Schmitt wrote: > Implement MOSI idle low and MOSI idle high to better support peripherals > that request specific MOSI behavior. > > Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com> > --- Acked-by: Nuno Sa <nuno.sa@analog.com> > drivers/spi/spi-gpio.c | 12 +++++++++++- > 1 file changed, 11 insertions(+), 1 deletion(-) > > diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c > index 909cce109bba..d3b8c99f0cb4 100644 > --- a/drivers/spi/spi-gpio.c > +++ b/drivers/spi/spi-gpio.c > @@ -236,6 +236,14 @@ static void spi_gpio_chipselect(struct spi_device *spi, > int is_active) > } > } > > +static void spi_gpio_set_mosi_idle(struct spi_device *spi) > +{ > + struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi); > + > + gpiod_set_value_cansleep(spi_gpio->mosi, > + !!(spi->mode & SPI_MOSI_IDLE_HIGH)); > +} > + > static int spi_gpio_setup(struct spi_device *spi) > { > struct gpio_desc *cs; > @@ -411,7 +419,8 @@ static int spi_gpio_probe(struct platform_device *pdev) > > host->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); > host->mode_bits = SPI_3WIRE | SPI_3WIRE_HIZ | SPI_CPHA | SPI_CPOL | > - SPI_CS_HIGH | SPI_LSB_FIRST; > + SPI_CS_HIGH | SPI_LSB_FIRST | SPI_MOSI_IDLE_LOW | > + SPI_MOSI_IDLE_HIGH; > if (!spi_gpio->mosi) { > /* HW configuration without MOSI pin > * > @@ -436,6 +445,7 @@ static int spi_gpio_probe(struct platform_device *pdev) > host->flags |= SPI_CONTROLLER_GPIO_SS; > bb->chipselect = spi_gpio_chipselect; > bb->set_line_direction = spi_gpio_set_direction; > + bb->set_mosi_idle = spi_gpio_set_mosi_idle; > > if (host->flags & SPI_CONTROLLER_NO_TX) { > bb->txrx_word[SPI_MODE_0] = spi_gpio_spec_txrx_word_mode0;
diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c index 909cce109bba..d3b8c99f0cb4 100644 --- a/drivers/spi/spi-gpio.c +++ b/drivers/spi/spi-gpio.c @@ -236,6 +236,14 @@ static void spi_gpio_chipselect(struct spi_device *spi, int is_active) } } +static void spi_gpio_set_mosi_idle(struct spi_device *spi) +{ + struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi); + + gpiod_set_value_cansleep(spi_gpio->mosi, + !!(spi->mode & SPI_MOSI_IDLE_HIGH)); +} + static int spi_gpio_setup(struct spi_device *spi) { struct gpio_desc *cs; @@ -411,7 +419,8 @@ static int spi_gpio_probe(struct platform_device *pdev) host->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); host->mode_bits = SPI_3WIRE | SPI_3WIRE_HIZ | SPI_CPHA | SPI_CPOL | - SPI_CS_HIGH | SPI_LSB_FIRST; + SPI_CS_HIGH | SPI_LSB_FIRST | SPI_MOSI_IDLE_LOW | + SPI_MOSI_IDLE_HIGH; if (!spi_gpio->mosi) { /* HW configuration without MOSI pin * @@ -436,6 +445,7 @@ static int spi_gpio_probe(struct platform_device *pdev) host->flags |= SPI_CONTROLLER_GPIO_SS; bb->chipselect = spi_gpio_chipselect; bb->set_line_direction = spi_gpio_set_direction; + bb->set_mosi_idle = spi_gpio_set_mosi_idle; if (host->flags & SPI_CONTROLLER_NO_TX) { bb->txrx_word[SPI_MODE_0] = spi_gpio_spec_txrx_word_mode0;
Implement MOSI idle low and MOSI idle high to better support peripherals that request specific MOSI behavior. Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com> --- drivers/spi/spi-gpio.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)