Merge tag 'spi-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "This is quite a quiet release for SPI. The one new core feature here
  is support for configuring the state of the MOSI pin when the bus is
  idle, there are some devices which are very fragile in this regard
  even when the chip select signal is not asserted. Otherwise we have
  some new driver support, a bunch of small fixes and some general
  cleanup work.

   - Support for configuring the state of the MOSI pin when the the bus
     is idle

   - Add the Elgin JG0309-01 in spidev

   - Support for Marvell xSPI, Mediatek MTK7981, Microchip PIC64GX, NXP
     i.MX8ULP, and Rockchip RK3576 controllers

  I also accidentally pulled in an IIO DT bindings update due to a typo
  when applying the MOSI idle state patches"

* tag 'spi-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (65 commits)
  spi: geni-qcom: Use devm functions to simplify code
  spi: remove spi_controller_is_slave() and spi_slave_abort()
  platform/olpc: olpc-xo175-ec: switch to use spi_target_abort().
  spi: slave-mt27xx: switch to use target_abort
  spi: spidev: switch to use spi_target_abort()
  spi: slave-system-control: switch to use spi_target_abort()
  spi: slave-time: switch to use spi_target_abort()
  spi: switch to use spi_controller_is_target()
  spi: fspi: add support for imx8ulp
  spi: fspi: involve lut_num for struct nxp_fspi_devtype_data
  dt-bindings: spi: nxp-fspi: add imx8ulp support
  spi: spidev_fdx: Fix the wrong format specifier
  spi: mxs: Switch to RUNTIME/SYSTEM_SLEEP_PM_OPS()
  spi: dt-bindings: Add rockchip,rk3576-spi compatible
  spi: Revert "spi: Insert the missing pci_dev_put()before return"
  spi: zynq-qspi: Replace kzalloc with kmalloc for buffer allocation
  spi: ppc4xx: Sort headers
  spi: ppc4xx: Revert "handle irq_of_parse_and_map() errors"
  spi: zynqmp-gqspi: Simplify with dev_err_probe()
  spi: zynqmp-gqspi: Use devm_spi_alloc_host()
  ...

1 files changed, 13 insertions, 4 deletions

diff --git a/drivers/spi/spi-axi-spi-engine.c b/drivers/spi/spi-axi-spi-engine.c
index 447e5a962dee..2dff95d2b3f5 100644
--- a/drivers/spi/spi-axi-spi-engine.c
+++ b/drivers/spi/spi-axi-spi-engine.c
@@ -41,6 +41,7 @@
 #define SPI_ENGINE_CONFIG_CPHA			BIT(0)
 #define SPI_ENGINE_CONFIG_CPOL			BIT(1)
 #define SPI_ENGINE_CONFIG_3WIRE			BIT(2)
+#define SPI_ENGINE_CONFIG_SDO_IDLE_HIGH		BIT(3)
 
 #define SPI_ENGINE_INST_TRANSFER		0x0
 #define SPI_ENGINE_INST_ASSERT			0x1
@@ -137,6 +138,10 @@ static unsigned int spi_engine_get_config(struct spi_device *spi)
 		config |= SPI_ENGINE_CONFIG_CPHA;
 	if (spi->mode & SPI_3WIRE)
 		config |= SPI_ENGINE_CONFIG_3WIRE;
+	if (spi->mode & SPI_MOSI_IDLE_HIGH)
+		config |= SPI_ENGINE_CONFIG_SDO_IDLE_HIGH;
+	if (spi->mode & SPI_MOSI_IDLE_LOW)
+		config &= ~SPI_ENGINE_CONFIG_SDO_IDLE_HIGH;
 
 	return config;
 }
@@ -258,7 +263,7 @@ static void spi_engine_compile_message(struct spi_message *msg, bool dry,
 					clk_div - 1));
 		}
 
-		if (bits_per_word != xfer->bits_per_word) {
+		if (bits_per_word != xfer->bits_per_word && xfer->len) {
 			bits_per_word = xfer->bits_per_word;
 			spi_engine_program_add_cmd(p, dry,
 				SPI_ENGINE_CMD_WRITE(SPI_ENGINE_CMD_REG_XFER_BITS,
@@ -692,9 +697,13 @@ static int spi_engine_probe(struct platform_device *pdev)
 	host->num_chipselect = 8;
 
 	/* Some features depend of the IP core version. */
-	if (ADI_AXI_PCORE_VER_MINOR(version) >= 2) {
-		host->mode_bits |= SPI_CS_HIGH;
-		host->setup = spi_engine_setup;
+	if (ADI_AXI_PCORE_VER_MAJOR(version) >= 1) {
+		if (ADI_AXI_PCORE_VER_MINOR(version) >= 2) {
+			host->mode_bits |= SPI_CS_HIGH;
+			host->setup = spi_engine_setup;
+		}
+		if (ADI_AXI_PCORE_VER_MINOR(version) >= 3)
+			host->mode_bits |= SPI_MOSI_IDLE_LOW | SPI_MOSI_IDLE_HIGH;
 	}
 
 	if (host->max_speed_hz == 0)