Merge tag 'spi-fix-v6.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A few standard fixes here, plus one more interesting one from Hans
  which addresses an issue where a move in when we requested GPIOs on
  ACPI systems caused us to stop doing pinmuxing and leave things
  floating that we'd really rather not have floating"

* tag 'spi-fix-v6.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: Add TODO comment about ACPI GPIO setup
  spi: xilinx: increase number of retries before declaring stall
  spi: imx: keep dma request disabled before dma transfer setup
  spi: Try to get ACPI GPIO IRQ earlier

Author: torvalds

drivers/spi/spi-imx.c

@@ -519,9 +519,15 @@ static void mx51_ecspi_trigger(struct spi_imx_data *spi_imx)
 {
 	u32 reg;
 
-	reg = readl(spi_imx->base + MX51_ECSPI_CTRL);
-	reg |= MX51_ECSPI_CTRL_XCH;
-	writel(reg, spi_imx->base + MX51_ECSPI_CTRL);
+	if (spi_imx->usedma) {
+		reg = readl(spi_imx->base + MX51_ECSPI_DMA);
+		reg |= MX51_ECSPI_DMA_TEDEN | MX51_ECSPI_DMA_RXDEN;
+		writel(reg, spi_imx->base + MX51_ECSPI_DMA);
+	} else {
+		reg = readl(spi_imx->base + MX51_ECSPI_CTRL);
+		reg |= MX51_ECSPI_CTRL_XCH;
+		writel(reg, spi_imx->base + MX51_ECSPI_CTRL);
+	}
 }
 
 static void mx51_ecspi_disable(struct spi_imx_data *spi_imx)
@@ -759,7 +765,6 @@ static void mx51_setup_wml(struct spi_imx_data *spi_imx)
 	writel(MX51_ECSPI_DMA_RX_WML(spi_imx->wml - 1) |
 		MX51_ECSPI_DMA_TX_WML(tx_wml) |
 		MX51_ECSPI_DMA_RXT_WML(spi_imx->wml) |
-		MX51_ECSPI_DMA_TEDEN | MX51_ECSPI_DMA_RXDEN |
 		MX51_ECSPI_DMA_RXTDEN, spi_imx->base + MX51_ECSPI_DMA);
 }
 
@@ -1520,6 +1525,8 @@ static int spi_imx_dma_transfer(struct spi_imx_data *spi_imx,
 	reinit_completion(&spi_imx->dma_tx_completion);
 	dma_async_issue_pending(controller->dma_tx);
 
+	spi_imx->devtype_data->trigger(spi_imx);
+
 	transfer_timeout = spi_imx_calculate_timeout(spi_imx, transfer->len);
 
 	/* Wait SDMA to finish the data transfer.*/

drivers/spi/spi-xilinx.c

@@ -300,7 +300,7 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
 
 		/* Read out all the data from the Rx FIFO */
 		rx_words = n_words;
-		stalled = 10;
+		stalled = 32;
 		while (rx_words) {
 			if (rx_words == n_words && !(stalled--) &&
 			    !(sr & XSPI_SR_TX_EMPTY_MASK) &&

drivers/spi/spi.c

@@ -2851,6 +2851,18 @@ static acpi_status acpi_register_spi_device(struct spi_controller *ctlr,
 	acpi_set_modalias(adev, acpi_device_hid(adev), spi->modalias,
 			  sizeof(spi->modalias));
 
+	/*
+	 * This gets re-tried in spi_probe() for -EPROBE_DEFER handling in case
+	 * the GPIO controller does not have a driver yet. This needs to be done
+	 * here too, because this call sets the GPIO direction and/or bias.
+	 * Setting these needs to be done even if there is no driver, in which
+	 * case spi_probe() will never get called.
+	 * TODO: ideally the setup of the GPIO should be handled in a generic
+	 * manner in the ACPI/gpiolib core code.
+	 */
+	if (spi->irq < 0)
+		spi->irq = acpi_dev_gpio_irq_get(adev, 0);
+
 	acpi_device_set_enumerated(adev);
 
 	adev->power.flags.ignore_parent = true;