spi: Fixes for v6.11

A small collection of fixes here, all driver specific and none of them
 too serious.  For whatever reason runtime PM seems to have been causing
 a bunch of issues recently.
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Merge tag 'spi-fix-v6.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A small collection of fixes here, all driver specific and none of them
  too serious. For whatever reason runtime PM seems to have been causing
  a bunch of issues recently"

* tag 'spi-fix-v6.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: pxa2xx: Move PM runtime handling to the glue drivers
  spi: pxa2xx: Do not override dev->platform_data on probe
  spi: spi-fsl-lpspi: limit PRESCALE bit in TCR register
  spi: spi-cadence-quadspi: Fix OSPI NOR failures during system resume
  spi: zynqmp-gqspi: Scale timeout by data size

drivers/spi/spi-cadence-quadspi.c

@@ -2000,13 +2000,25 @@ static int cqspi_runtime_resume(struct device *dev)
 static int cqspi_suspend(struct device *dev)
 {
 	struct cqspi_st *cqspi = dev_get_drvdata(dev);
+	int ret;
 
-	return spi_controller_suspend(cqspi->host);
+	ret = spi_controller_suspend(cqspi->host);
+	if (ret)
+		return ret;
+
+	return pm_runtime_force_suspend(dev);
 }
 
 static int cqspi_resume(struct device *dev)
 {
 	struct cqspi_st *cqspi = dev_get_drvdata(dev);
+	int ret;
+
+	ret = pm_runtime_force_resume(dev);
+	if (ret) {
+		dev_err(dev, "pm_runtime_force_resume failed on resume\n");
+		return ret;
+	}
 
 	return spi_controller_resume(cqspi->host);
 }

drivers/spi/spi-fsl-lpspi.c

@@ -82,6 +82,10 @@
 #define TCR_RXMSK	BIT(19)
 #define TCR_TXMSK	BIT(18)
 
+struct fsl_lpspi_devtype_data {
+	u8 prescale_max;
+};
+
 struct lpspi_config {
 	u8 bpw;
 	u8 chip_select;
@@ -119,10 +123,25 @@ struct fsl_lpspi_data {
 	bool usedma;
 	struct completion dma_rx_completion;
 	struct completion dma_tx_completion;
+
+	const struct fsl_lpspi_devtype_data *devtype_data;
+};
+
+/*
+ * ERR051608 fixed or not:
+ * https://www.nxp.com/docs/en/errata/i.MX93_1P87f.pdf
+ */
+static struct fsl_lpspi_devtype_data imx93_lpspi_devtype_data = {
+	.prescale_max = 1,
+};
+
+static struct fsl_lpspi_devtype_data imx7ulp_lpspi_devtype_data = {
+	.prescale_max = 8,
 };
 
 static const struct of_device_id fsl_lpspi_dt_ids[] = {
-	{ .compatible = "fsl,imx7ulp-spi", },
+	{ .compatible = "fsl,imx7ulp-spi", .data = &imx7ulp_lpspi_devtype_data,},
+	{ .compatible = "fsl,imx93-spi", .data = &imx93_lpspi_devtype_data,},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, fsl_lpspi_dt_ids);
@@ -297,9 +316,11 @@ static int fsl_lpspi_set_bitrate(struct fsl_lpspi_data *fsl_lpspi)
 {
 	struct lpspi_config config = fsl_lpspi->config;
 	unsigned int perclk_rate, scldiv, div;
+	u8 prescale_max;
 	u8 prescale;
 
 	perclk_rate = clk_get_rate(fsl_lpspi->clk_per);
+	prescale_max = fsl_lpspi->devtype_data->prescale_max;
 
 	if (!config.speed_hz) {
 		dev_err(fsl_lpspi->dev,
@@ -315,7 +336,7 @@ static int fsl_lpspi_set_bitrate(struct fsl_lpspi_data *fsl_lpspi)
 
 	div = DIV_ROUND_UP(perclk_rate, config.speed_hz);
 
-	for (prescale = 0; prescale < 8; prescale++) {
+	for (prescale = 0; prescale < prescale_max; prescale++) {
 		scldiv = div / (1 << prescale) - 2;
 		if (scldiv < 256) {
 			fsl_lpspi->config.prescale = prescale;
@@ -822,6 +843,7 @@ static int fsl_lpspi_init_rpm(struct fsl_lpspi_data *fsl_lpspi)
 
 static int fsl_lpspi_probe(struct platform_device *pdev)
 {
+	const struct fsl_lpspi_devtype_data *devtype_data;
 	struct fsl_lpspi_data *fsl_lpspi;
 	struct spi_controller *controller;
 	struct resource *res;
@@ -830,6 +852,10 @@ static int fsl_lpspi_probe(struct platform_device *pdev)
 	u32 temp;
 	bool is_target;
 
+	devtype_data = of_device_get_match_data(&pdev->dev);
+	if (!devtype_data)
+		return -ENODEV;
+
 	is_target = of_property_read_bool((&pdev->dev)->of_node, "spi-slave");
 	if (is_target)
 		controller = devm_spi_alloc_target(&pdev->dev,
@@ -848,6 +874,7 @@ static int fsl_lpspi_probe(struct platform_device *pdev)
 	fsl_lpspi->is_target = is_target;
 	fsl_lpspi->is_only_cs1 = of_property_read_bool((&pdev->dev)->of_node,
 						"fsl,spi-only-use-cs1-sel");
+	fsl_lpspi->devtype_data = devtype_data;
 
 	init_completion(&fsl_lpspi->xfer_done);
 

drivers/spi/spi-pxa2xx-pci.c

@@ -11,6 +11,7 @@
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/pm.h>
+#include <linux/pm_runtime.h>
 #include <linux/sprintf.h>
 #include <linux/string.h>
 #include <linux/types.h>
@@ -297,11 +298,23 @@ static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
 		return ret;
 	ssp->irq = pci_irq_vector(dev, 0);
 
-	return pxa2xx_spi_probe(&dev->dev, ssp);
+	ret = pxa2xx_spi_probe(&dev->dev, ssp, pdata);
+	if (ret)
+		return ret;
+
+	pm_runtime_set_autosuspend_delay(&dev->dev, 50);
+	pm_runtime_use_autosuspend(&dev->dev);
+	pm_runtime_put_autosuspend(&dev->dev);
+	pm_runtime_allow(&dev->dev);
+
+	return 0;
 }
 
 static void pxa2xx_spi_pci_remove(struct pci_dev *dev)
 {
+	pm_runtime_forbid(&dev->dev);
+	pm_runtime_get_noresume(&dev->dev);
+
 	pxa2xx_spi_remove(&dev->dev);
 }
 

drivers/spi/spi-pxa2xx-platform.c

@@ -7,6 +7,7 @@
 #include <linux/init.h>
 #include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/property.h>
 #include <linux/types.h>
 
@@ -63,7 +64,7 @@ static struct ssp_device *pxa2xx_spi_ssp_request(struct platform_device *pdev)
 
 	ssp = pxa_ssp_request(pdev->id, pdev->name);
 	if (!ssp)
-		return ssp;
+		return NULL;
 
 	status = devm_add_action_or_reset(&pdev->dev, pxa2xx_spi_ssp_release, ssp);
 	if (status)
@@ -142,14 +143,13 @@ static int pxa2xx_spi_platform_probe(struct platform_device *pdev)
 	struct pxa2xx_spi_controller *platform_info;
 	struct device *dev = &pdev->dev;
 	struct ssp_device *ssp;
+	int ret;
 
 	platform_info = dev_get_platdata(dev);
 	if (!platform_info) {
 		platform_info = pxa2xx_spi_init_pdata(pdev);
 		if (IS_ERR(platform_info))
 			return dev_err_probe(dev, PTR_ERR(platform_info), "missing platform data\n");
-
-		dev->platform_data = platform_info;
 	}
 
 	ssp = pxa2xx_spi_ssp_request(pdev);
@@ -158,12 +158,28 @@ static int pxa2xx_spi_platform_probe(struct platform_device *pdev)
 	if (!ssp)
 		ssp = &platform_info->ssp;
 
-	return pxa2xx_spi_probe(dev, ssp);
+	pm_runtime_set_autosuspend_delay(dev, 50);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+
+	ret = pxa2xx_spi_probe(dev, ssp, platform_info);
+	if (ret)
+		pm_runtime_disable(dev);
+
+	return ret;
 }
 
 static void pxa2xx_spi_platform_remove(struct platform_device *pdev)
 {
-	pxa2xx_spi_remove(&pdev->dev);
+	struct device *dev = &pdev->dev;
+
+	pm_runtime_get_sync(dev);
+
+	pxa2xx_spi_remove(dev);
+
+	pm_runtime_put_noidle(dev);
+	pm_runtime_disable(dev);
 }
 
 static const struct acpi_device_id pxa2xx_spi_acpi_match[] = {

drivers/spi/spi-pxa2xx.c

@@ -1277,16 +1277,15 @@ static size_t pxa2xx_spi_max_dma_transfer_size(struct spi_device *spi)
 	return MAX_DMA_LEN;
 }
 
-int pxa2xx_spi_probe(struct device *dev, struct ssp_device *ssp)
+int pxa2xx_spi_probe(struct device *dev, struct ssp_device *ssp,
+		     struct pxa2xx_spi_controller *platform_info)
 {
-	struct pxa2xx_spi_controller *platform_info;
 	struct spi_controller *controller;
 	struct driver_data *drv_data;
 	const struct lpss_config *config;
 	int status;
 	u32 tmp;
 
-	platform_info = dev_get_platdata(dev);
 	if (platform_info->is_target)
 		controller = devm_spi_alloc_target(dev, sizeof(*drv_data));
 	else
@@ -1450,24 +1449,16 @@ int pxa2xx_spi_probe(struct device *dev, struct ssp_device *ssp)
 		}
 	}
 
-	pm_runtime_set_autosuspend_delay(dev, 50);
-	pm_runtime_use_autosuspend(dev);
-	pm_runtime_set_active(dev);
-	pm_runtime_enable(dev);
-
 	/* Register with the SPI framework */
 	dev_set_drvdata(dev, drv_data);
 	status = spi_register_controller(controller);
 	if (status) {
 		dev_err_probe(dev, status, "problem registering SPI controller\n");
-		goto out_error_pm_runtime_enabled;
+		goto out_error_clock_enabled;
 	}
 
 	return status;
 
-out_error_pm_runtime_enabled:
-	pm_runtime_disable(dev);
-
 out_error_clock_enabled:
 	clk_disable_unprepare(ssp->clk);
 
@@ -1484,8 +1475,6 @@ void pxa2xx_spi_remove(struct device *dev)
 	struct driver_data *drv_data = dev_get_drvdata(dev);
 	struct ssp_device *ssp = drv_data->ssp;
 
-	pm_runtime_get_sync(dev);
-
 	spi_unregister_controller(drv_data->controller);
 
 	/* Disable the SSP at the peripheral and SOC level */
@@ -1496,9 +1485,6 @@ void pxa2xx_spi_remove(struct device *dev)
 	if (drv_data->controller_info->enable_dma)
 		pxa2xx_spi_dma_release(drv_data);
 
-	pm_runtime_put_noidle(dev);
-	pm_runtime_disable(dev);
-
 	/* Release IRQ */
 	free_irq(ssp->irq, drv_data);
 }

drivers/spi/spi-pxa2xx.h

@@ -132,7 +132,8 @@ extern void pxa2xx_spi_dma_stop(struct driver_data *drv_data);
 extern int pxa2xx_spi_dma_setup(struct driver_data *drv_data);
 extern void pxa2xx_spi_dma_release(struct driver_data *drv_data);
 
-int pxa2xx_spi_probe(struct device *dev, struct ssp_device *ssp);
+int pxa2xx_spi_probe(struct device *dev, struct ssp_device *ssp,
+		     struct pxa2xx_spi_controller *platform_info);
 void pxa2xx_spi_remove(struct device *dev);
 
 extern const struct dev_pm_ops pxa2xx_spi_pm_ops;

drivers/spi/spi-zynqmp-gqspi.c

@@ -1033,6 +1033,18 @@ static int __maybe_unused zynqmp_runtime_resume(struct device *dev)
 	return 0;
 }
 
+static unsigned long zynqmp_qspi_timeout(struct zynqmp_qspi *xqspi, u8 bits,
+					 unsigned long bytes)
+{
+	unsigned long timeout;
+
+	/* Assume we are at most 2x slower than the nominal bus speed */
+	timeout = mult_frac(bytes, 2 * 8 * MSEC_PER_SEC,
+			    bits * xqspi->speed_hz);
+	/* And add 100 ms for scheduling delays */
+	return msecs_to_jiffies(timeout + 100);
+}
+
 /**
  * zynqmp_qspi_exec_op() - Initiates the QSPI transfer
  * @mem: The SPI memory
@@ -1049,6 +1061,7 @@ static int zynqmp_qspi_exec_op(struct spi_mem *mem,
 {
 	struct zynqmp_qspi *xqspi = spi_controller_get_devdata
 				    (mem->spi->controller);
+	unsigned long timeout;
 	int err = 0, i;
 	u32 genfifoentry = 0;
 	u16 opcode = op->cmd.opcode;
@@ -1077,8 +1090,10 @@ static int zynqmp_qspi_exec_op(struct spi_mem *mem,
 		zynqmp_gqspi_write(xqspi, GQSPI_IER_OFST,
 				   GQSPI_IER_GENFIFOEMPTY_MASK |
 				   GQSPI_IER_TXNOT_FULL_MASK);
-		if (!wait_for_completion_timeout
-		    (&xqspi->data_completion, msecs_to_jiffies(1000))) {
+		timeout = zynqmp_qspi_timeout(xqspi, op->cmd.buswidth,
+					      op->cmd.nbytes);
+		if (!wait_for_completion_timeout(&xqspi->data_completion,
+						 timeout)) {
 			err = -ETIMEDOUT;
 			goto return_err;
 		}
@@ -1104,8 +1119,10 @@ static int zynqmp_qspi_exec_op(struct spi_mem *mem,
 				   GQSPI_IER_TXEMPTY_MASK |
 				   GQSPI_IER_GENFIFOEMPTY_MASK |
 				   GQSPI_IER_TXNOT_FULL_MASK);
-		if (!wait_for_completion_timeout
-		    (&xqspi->data_completion, msecs_to_jiffies(1000))) {
+		timeout = zynqmp_qspi_timeout(xqspi, op->addr.buswidth,
+					      op->addr.nbytes);
+		if (!wait_for_completion_timeout(&xqspi->data_completion,
+						 timeout)) {
 			err = -ETIMEDOUT;
 			goto return_err;
 		}
@@ -1173,8 +1190,9 @@ static int zynqmp_qspi_exec_op(struct spi_mem *mem,
 						   GQSPI_IER_RXEMPTY_MASK);
 			}
 		}
-		if (!wait_for_completion_timeout
-		    (&xqspi->data_completion, msecs_to_jiffies(1000)))
+		timeout = zynqmp_qspi_timeout(xqspi, op->data.buswidth,
+					      op->data.nbytes);
+		if (!wait_for_completion_timeout(&xqspi->data_completion, timeout))
 			err = -ETIMEDOUT;
 	}