Merge tag 'spi-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "The big theme for this release has been performance, we've had a
  series of unrelated overhauls of a few drivers all with a big
  peformance component.

  Otherwise it's been relatively quiet, highlights include:

   - A big overhaul of the spi-fsl-dspi driver improving the code
     quality, performance and stability from Vladimir Oltean.

   - A big performance enhancement for the bc2835 (Raspberry Pi) driver
     for unidirectional transfers from Lukas Wunner.

   - Improved performance on small transfers for the uniphier driver
     from Keiji Hayashibara.

   - Lots of coccinelle generated cleanups from Yue Haibing.

   - New device support for Freescale ls2080a and Nuvoton NPCM FIU"

* tag 'spi-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (102 commits)
  spi: mediatek: support large PA
  spi: mediatek: add spi support for mt6765 IC
  dt-bindings: spi: update bindings for MT6765 SoC
  spi: bcm2835: Speed up RX-only DMA transfers by zero-filling TX FIFO
  spi: bcm2835: Speed up TX-only DMA transfers by clearing RX FIFO
  dmaengine: bcm2835: Avoid accessing memory when copying zeroes
  spi: bcm2835: Cache CS register value for ->prepare_message()
  dmaengine: bcm2835: Document struct bcm2835_dmadev
  spi: Guarantee cacheline alignment of driver-private data
  dmaengine: bcm2835: Allow reusable descriptors
  dmaengine: bcm2835: Allow cyclic transactions without interrupt
  spi: bcm2835: Drop dma_pending flag
  spi: bcm2835: Work around DONE bit erratum
  spi-gpio: Use PTR_ERR_OR_ZERO() in spi_gpio_request()
  spi: Use an abbreviated pointer to ctlr->cur_msg in __spi_pump_messages
  spi: npcm-fiu: remove set but not used variable 'retlen'
  spi: fsl-spi: use devm_platform_ioremap_resource() to simplify code
  spi: zynq-qspi: use devm_platform_ioremap_resource() to simplify code
  spi: zynqmp: use devm_platform_ioremap_resource() to simplify code
  spi: xlp: use devm_platform_ioremap_resource() to simplify code
  ...

Documentation/devicetree/bindings/spi/nuvoton,npcm-fiu.txt

+* Nuvoton FLASH Interface Unit (FIU) SPI Controller
+
+NPCM FIU supports single, dual and quad communication interface.
+
+The NPCM7XX supports three FIU modules,
+FIU0 and FIUx supports two chip selects,
+FIU3 support four chip select.
+
+Required properties:
+  - compatible : "nuvoton,npcm750-fiu" for the NPCM7XX BMC
+  - #address-cells : should be 1.
+  - #size-cells : should be 0.
+  - reg : the first contains the register location and length,
+          the second contains the memory mapping address and length
+  - reg-names: Should contain the reg names "control" and "memory"
+  - clocks : phandle of FIU reference clock.
+
+Required properties in case the pins can be muxed:
+  - pinctrl-names : a pinctrl state named "default" must be defined.
+  - pinctrl-0 : phandle referencing pin configuration of the device.
+
+Optional property:
+  - nuvoton,spix-mode: enable spix-mode for an expansion bus to an ASIC or CPLD.
+
+Aliases:
+- All the FIU controller nodes should be represented in the aliases node using
+  the following format 'fiu{n}' where n is a unique number for the alias.
+  In the NPCM7XX BMC:
+  		fiu0 represent fiu 0 controller
+  		fiu1 represent fiu 3 controller
+  		fiu2 represent fiu x controller
+
+Example:
+fiu3: spi@c00000000 {
+	compatible = "nuvoton,npcm750-fiu";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	reg = <0xfb000000 0x1000>, <0x80000000 0x10000000>;
+	reg-names = "control", "memory";
+	clocks = <&clk NPCM7XX_CLK_AHB>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi3_pins>;
+	spi-nor@0 {
+			...
+	};
+};
+

Documentation/devicetree/bindings/spi/spi-controller.yaml

@@ -31,7 +31,7 @@ properties:
       If that property is used, the number of chip selects will be
       increased automatically with max(cs-gpios, hardware chip selects).
 
-      So if, for example, the controller has 2 CS lines, and the
+      So if, for example, the controller has 4 CS lines, and the
       cs-gpios looks like this
         cs-gpios = <&gpio1 0 0>, <0>, <&gpio1 1 0>, <&gpio1 2 0>;
 

Documentation/devicetree/bindings/spi/spi-fsl-qspi.txt

@@ -3,9 +3,8 @@
 Required properties:
   - compatible : Should be "fsl,vf610-qspi", "fsl,imx6sx-qspi",
 		 "fsl,imx7d-qspi", "fsl,imx6ul-qspi",
-		 "fsl,ls1021a-qspi"
+		 "fsl,ls1021a-qspi", "fsl,ls2080a-qspi"
 		 or
-		 "fsl,ls2080a-qspi" followed by "fsl,ls1021a-qspi",
 		 "fsl,ls1043a-qspi" followed by "fsl,ls1021a-qspi"
   - reg : the first contains the register location and length,
           the second contains the memory mapping address and length
@@ -34,7 +33,11 @@ qspi0: quadspi@40044000 {
 	clock-names = "qspi_en", "qspi";
 
 	flash0: s25fl128s@0 {
-		....
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spansion,s25fl128s", "jedec,spi-nor";
+		spi-max-frequency = <50000000>;
+		reg = <0>;
 	};
 };
 

Documentation/devicetree/bindings/spi/spi-mt65xx.txt

@@ -5,6 +5,7 @@ Required properties:
     - mediatek,mt2701-spi: for mt2701 platforms
     - mediatek,mt2712-spi: for mt2712 platforms
     - mediatek,mt6589-spi: for mt6589 platforms
+    - mediatek,mt6765-spi: for mt6765 platforms
     - mediatek,mt7622-spi: for mt7622 platforms
     - "mediatek,mt7629-spi", "mediatek,mt7622-spi": for mt7629 platforms
     - mediatek,mt8135-spi: for mt8135 platforms

Documentation/devicetree/bindings/spi/spi-sprd-adi.txt

@@ -25,18 +25,23 @@ data by ADI software channels at the same time, or two parallel routine of setti
 ADI registers will make ADI controller registers chaos to lead incorrect results.
 Then we need one hardware spinlock to synchronize between the multiple subsystems.
 
+The new version ADI controller supplies multiple master channels for different
+subsystem accessing, that means no need to add hardware spinlock to synchronize,
+thus change the hardware spinlock support to be optional to keep backward
+compatibility.
+
 Required properties:
 - compatible: Should be "sprd,sc9860-adi".
 - reg: Offset and length of ADI-SPI controller register space.
-- hwlocks: Reference to a phandle of a hwlock provider node.
-- hwlock-names: Reference to hwlock name strings defined in the same order
-	as the hwlocks, should be "adi".
 - #address-cells: Number of cells required to define a chip select address
 	on the ADI-SPI bus. Should be set to 1.
 - #size-cells: Size of cells required to define a chip select address size
 	on the ADI-SPI bus. Should be set to 0.
 
 Optional properties:
+- hwlocks: Reference to a phandle of a hwlock provider node.
+- hwlock-names: Reference to hwlock name strings defined in the same order
+	as the hwlocks, should be "adi".
 - sprd,hw-channels: This is an array of channel values up to 49 channels.
 	The first value specifies the hardware channel id which is used to
 	transfer data triggered by hardware automatically, and the second

arch/arm/mach-ep93xx/edb93xx.c

@@ -103,7 +103,7 @@ static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
 };
 
 static struct gpiod_lookup_table edb93xx_spi_cs_gpio_table = {
-	.dev_id = "ep93xx-spi.0",
+	.dev_id = "spi0",
 	.table = {
 		GPIO_LOOKUP("A", 6, "cs", GPIO_ACTIVE_LOW),
 		{ },

arch/arm/mach-ep93xx/simone.c

@@ -73,7 +73,7 @@ static struct spi_board_info simone_spi_devices[] __initdata = {
  * v1.3 parts will still work, since the signal on SFRMOUT is automatic.
  */
 static struct gpiod_lookup_table simone_spi_cs_gpio_table = {
-	.dev_id = "ep93xx-spi.0",
+	.dev_id = "spi0",
 	.table = {
 		GPIO_LOOKUP("A", 1, "cs", GPIO_ACTIVE_LOW),
 		{ },

arch/arm/mach-ep93xx/ts72xx.c

@@ -267,7 +267,7 @@ static struct spi_board_info bk3_spi_board_info[] __initdata = {
  * goes through CPLD
  */
 static struct gpiod_lookup_table bk3_spi_cs_gpio_table = {
-	.dev_id = "ep93xx-spi.0",
+	.dev_id = "spi0",
 	.table = {
 		GPIO_LOOKUP("F", 3, "cs", GPIO_ACTIVE_LOW),
 		{ },
@@ -316,7 +316,7 @@ static struct spi_board_info ts72xx_spi_devices[] __initdata = {
 };
 
 static struct gpiod_lookup_table ts72xx_spi_cs_gpio_table = {
-	.dev_id = "ep93xx-spi.0",
+	.dev_id = "spi0",
 	.table = {
 		/* DIO_17 */
 		GPIO_LOOKUP("F", 2, "cs", GPIO_ACTIVE_LOW),

arch/arm/mach-ep93xx/vision_ep9307.c

@@ -242,7 +242,7 @@ static struct spi_board_info vision_spi_board_info[] __initdata = {
 };
 
 static struct gpiod_lookup_table vision_spi_cs_gpio_table = {
-	.dev_id = "ep93xx-spi.0",
+	.dev_id = "spi0",
 	.table = {
 		GPIO_LOOKUP_IDX("A", 6, "cs", 0, GPIO_ACTIVE_LOW),
 		GPIO_LOOKUP_IDX("A", 7, "cs", 1, GPIO_ACTIVE_LOW),

drivers/dma/bcm2835-dma.c

@@ -37,10 +37,19 @@
 #define BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED 14
 #define BCM2835_DMA_CHAN_NAME_SIZE 8
 
+/**
+ * struct bcm2835_dmadev - BCM2835 DMA controller
+ * @ddev: DMA device
+ * @base: base address of register map
+ * @dma_parms: DMA parameters (to convey 1 GByte max segment size to clients)
+ * @zero_page: bus address of zero page (to detect transactions copying from
+ *	zero page and avoid accessing memory if so)
+ */
 struct bcm2835_dmadev {
 	struct dma_device ddev;
 	void __iomem *base;
 	struct device_dma_parameters dma_parms;
+	dma_addr_t zero_page;
 };
 
 struct bcm2835_dma_cb {
@@ -687,11 +696,12 @@ static struct dma_async_tx_descriptor *bcm2835_dma_prep_dma_cyclic(
 	size_t period_len, enum dma_transfer_direction direction,
 	unsigned long flags)
 {
+	struct bcm2835_dmadev *od = to_bcm2835_dma_dev(chan->device);
 	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
 	struct bcm2835_desc *d;
 	dma_addr_t src, dst;
 	u32 info = BCM2835_DMA_WAIT_RESP;
-	u32 extra = BCM2835_DMA_INT_EN;
+	u32 extra = 0;
 	size_t max_len = bcm2835_dma_max_frame_length(c);
 	size_t frames;
 
@@ -707,6 +717,11 @@ static struct dma_async_tx_descriptor *bcm2835_dma_prep_dma_cyclic(
 		return NULL;
 	}
 
+	if (flags & DMA_PREP_INTERRUPT)
+		extra |= BCM2835_DMA_INT_EN;
+	else
+		period_len = buf_len;
+
 	/*
 	 * warn if buf_len is not a multiple of period_len - this may leed
 	 * to unexpected latencies for interrupts and thus audiable clicks
@@ -732,6 +747,10 @@ static struct dma_async_tx_descriptor *bcm2835_dma_prep_dma_cyclic(
 		dst = c->cfg.dst_addr;
 		src = buf_addr;
 		info |= BCM2835_DMA_D_DREQ | BCM2835_DMA_S_INC;
+
+		/* non-lite channels can write zeroes w/o accessing memory */
+		if (buf_addr == od->zero_page && !c->is_lite_channel)
+			info |= BCM2835_DMA_S_IGNORE;
 	}
 
 	/* calculate number of frames */
@@ -778,7 +797,10 @@ static int bcm2835_dma_terminate_all(struct dma_chan *chan)
 
 	/* stop DMA activity */
 	if (c->desc) {
-		vchan_terminate_vdesc(&c->desc->vd);
+		if (c->desc->vd.tx.flags & DMA_PREP_INTERRUPT)
+			vchan_terminate_vdesc(&c->desc->vd);
+		else
+			vchan_vdesc_fini(&c->desc->vd);
 		c->desc = NULL;
 		bcm2835_dma_abort(c);
 	}
@@ -831,6 +853,9 @@ static void bcm2835_dma_free(struct bcm2835_dmadev *od)
 		list_del(&c->vc.chan.device_node);
 		tasklet_kill(&c->vc.task);
 	}
+
+	dma_unmap_page_attrs(od->ddev.dev, od->zero_page, PAGE_SIZE,
+			     DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC);
 }
 
 static const struct of_device_id bcm2835_dma_of_match[] = {
@@ -907,11 +932,20 @@ static int bcm2835_dma_probe(struct platform_device *pdev)
 	od->ddev.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV) |
 			      BIT(DMA_MEM_TO_MEM);
 	od->ddev.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
+	od->ddev.descriptor_reuse = true;
 	od->ddev.dev = &pdev->dev;
 	INIT_LIST_HEAD(&od->ddev.channels);
 
 	platform_set_drvdata(pdev, od);
 
+	od->zero_page = dma_map_page_attrs(od->ddev.dev, ZERO_PAGE(0), 0,
+					   PAGE_SIZE, DMA_TO_DEVICE,
+					   DMA_ATTR_SKIP_CPU_SYNC);
+	if (dma_mapping_error(od->ddev.dev, od->zero_page)) {
+		dev_err(&pdev->dev, "Failed to map zero page\n");
+		return -ENOMEM;
+	}
+
 	/* Request DMA channel mask from device tree */
 	if (of_property_read_u32(pdev->dev.of_node,
 			"brcm,dma-channel-mask",

drivers/platform/chrome/cros_ec_spi.c

@@ -706,7 +706,7 @@ static int cros_ec_spi_devm_high_pri_alloc(struct device *dev,
 					   struct cros_ec_spi *ec_spi)
 {
 	struct sched_param sched_priority = {
-		.sched_priority = MAX_RT_PRIO - 1,
+		.sched_priority = MAX_RT_PRIO / 2,
 	};
 	int err;
 

drivers/spi/Kconfig

@@ -433,6 +433,16 @@ config SPI_MT7621
 	help
 	  This selects a driver for the MediaTek MT7621 SPI Controller.
 
+config SPI_NPCM_FIU
+	tristate "Nuvoton NPCM FLASH Interface Unit"
+	depends on ARCH_NPCM || COMPILE_TEST
+	depends on OF && HAS_IOMEM
+	help
+	  This enables support for the Flash Interface Unit SPI controller
+	  in master mode.
+	  This driver does not support generic SPI. The implementation only
+	  supports spi-mem interface.
+
 config SPI_NPCM_PSPI
 	tristate "Nuvoton NPCM PSPI Controller"
 	depends on ARCH_NPCM || COMPILE_TEST

drivers/spi/Makefile

@@ -63,6 +63,7 @@ obj-$(CONFIG_SPI_MT65XX)                += spi-mt65xx.o
 obj-$(CONFIG_SPI_MT7621)		+= spi-mt7621.o
 obj-$(CONFIG_SPI_MXIC)			+= spi-mxic.o
 obj-$(CONFIG_SPI_MXS)			+= spi-mxs.o
+obj-$(CONFIG_SPI_NPCM_FIU)		+= spi-npcm-fiu.o
 obj-$(CONFIG_SPI_NPCM_PSPI)		+= spi-npcm-pspi.o
 obj-$(CONFIG_SPI_NUC900)		+= spi-nuc900.o
 obj-$(CONFIG_SPI_NXP_FLEXSPI)		+= spi-nxp-fspi.o

drivers/spi/atmel-quadspi.c

@@ -526,7 +526,6 @@ static int atmel_qspi_probe(struct platform_device *pdev)
 	/* Request the IRQ */
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(&pdev->dev, "missing IRQ\n");
 		err = irq;
 		goto disable_qspick;
 	}

drivers/spi/spi-altera.c

@@ -170,7 +170,6 @@ static int altera_spi_probe(struct platform_device *pdev)
 {
 	struct altera_spi *hw;
 	struct spi_master *master;
-	struct resource *res;
 	int err = -ENODEV;
 
 	master = spi_alloc_master(&pdev->dev, sizeof(struct altera_spi));
@@ -189,8 +188,7 @@ static int altera_spi_probe(struct platform_device *pdev)
 	hw = spi_master_get_devdata(master);
 
 	/* find and map our resources */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	hw->base = devm_ioremap_resource(&pdev->dev, res);
+	hw->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(hw->base)) {
 		err = PTR_ERR(hw->base);
 		goto exit;

drivers/spi/spi-armada-3700.c

@@ -817,7 +817,6 @@ static int a3700_spi_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *of_node = dev->of_node;
-	struct resource *res;
 	struct spi_master *master;
 	struct a3700_spi *spi;
 	u32 num_cs = 0;
@@ -855,8 +854,7 @@ static int a3700_spi_probe(struct platform_device *pdev)
 
 	spi->master = master;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	spi->base = devm_ioremap_resource(dev, res);
+	spi->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(spi->base)) {
 		ret = PTR_ERR(spi->base);
 		goto error;
@@ -864,7 +862,6 @@ static int a3700_spi_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(dev, "could not get irq: %d\n", irq);
 		ret = -ENXIO;
 		goto error;
 	}

drivers/spi/spi-ath79.c

@@ -139,7 +139,6 @@ static int ath79_spi_probe(struct platform_device *pdev)
 	struct spi_master *master;
 	struct ath79_spi *sp;
 	struct ath79_spi_platform_data *pdata;
-	struct resource	*r;
 	unsigned long rate;
 	int ret;
 
@@ -169,8 +168,7 @@ static int ath79_spi_probe(struct platform_device *pdev)
 	sp->bitbang.txrx_word[SPI_MODE_0] = ath79_spi_txrx_mode0;
 	sp->bitbang.flags = SPI_CS_HIGH;
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	sp->base = devm_ioremap_resource(&pdev->dev, r);
+	sp->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(sp->base)) {
 		ret = PTR_ERR(sp->base);
 		goto err_put_master;

drivers/spi/spi-atmel.c

@@ -23,6 +23,7 @@
 #include <linux/gpio/consumer.h>
 #include <linux/pinctrl/consumer.h>
 #include <linux/pm_runtime.h>
+#include <trace/events/spi.h>
 
 /* SPI register offsets */
 #define SPI_CR					0x0000
@@ -1409,9 +1410,13 @@ static int atmel_spi_transfer_one_message(struct spi_master *master,
 	msg->actual_length = 0;
 
 	list_for_each_entry(xfer, &msg->transfers, transfer_list) {
+		trace_spi_transfer_start(msg, xfer);
+
 		ret = atmel_spi_one_transfer(master, msg, xfer);
 		if (ret)
 			goto msg_done;
+
+		trace_spi_transfer_stop(msg, xfer);
 	}
 
 	if (as->use_pdc)

drivers/spi/spi-axi-spi-engine.c

@@ -460,7 +460,6 @@ static int spi_engine_probe(struct platform_device *pdev)
 	struct spi_engine *spi_engine;
 	struct spi_master *master;
 	unsigned int version;
-	struct resource *res;
 	int irq;
 	int ret;
 
@@ -480,8 +479,7 @@ static int spi_engine_probe(struct platform_device *pdev)
 
 	spin_lock_init(&spi_engine->lock);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	spi_engine->base = devm_ioremap_resource(&pdev->dev, res);
+	spi_engine->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(spi_engine->base)) {
 		ret = PTR_ERR(spi_engine->base);
 		goto err_put_master;

drivers/spi/spi-bcm-qspi.c

@@ -343,7 +343,7 @@ static int bcm_qspi_bspi_set_flex_mode(struct bcm_qspi *qspi,
 {
 	int bpc = 0, bpp = 0;
 	u8 command = op->cmd.opcode;
-	int width  = op->cmd.buswidth ? op->cmd.buswidth : SPI_NBITS_SINGLE;
+	int width = op->data.buswidth ? op->data.buswidth : SPI_NBITS_SINGLE;
 	int addrlen = op->addr.nbytes;
 	int flex_mode = 1;
 
@@ -897,6 +897,7 @@ static int bcm_qspi_transfer_one(struct spi_master *master,
 
 		read_from_hw(qspi, slots);
 	}
+	bcm_qspi_enable_bspi(qspi);
 
 	return 0;
 }
@@ -981,7 +982,7 @@ static int bcm_qspi_exec_mem_op(struct spi_mem *mem,
 	if (mspi_read)
 		return bcm_qspi_mspi_exec_mem_op(spi, op);
 
-	ret = bcm_qspi_bspi_set_mode(qspi, op, -1);
+	ret = bcm_qspi_bspi_set_mode(qspi, op, 0);
 
 	if (!ret)
 		ret = bcm_qspi_bspi_exec_mem_op(spi, op);

drivers/spi/spi-bcm2835aux.c

@@ -491,7 +491,6 @@ static int bcm2835aux_spi_probe(struct platform_device *pdev)
 {
 	struct spi_master *master;
 	struct bcm2835aux_spi *bs;
-	struct resource *res;
 	unsigned long clk_hz;
 	int err;
 
@@ -524,8 +523,7 @@ static int bcm2835aux_spi_probe(struct platform_device *pdev)
 	bs = spi_master_get_devdata(master);
 
 	/* the main area */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	bs->regs = devm_ioremap_resource(&pdev->dev, res);
+	bs->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(bs->regs)) {
 		err = PTR_ERR(bs->regs);
 		goto out_master_put;
@@ -540,7 +538,6 @@ static int bcm2835aux_spi_probe(struct platform_device *pdev)
 
 	bs->irq = platform_get_irq(pdev, 0);
 	if (bs->irq <= 0) {
-		dev_err(&pdev->dev, "could not get IRQ: %d\n", bs->irq);
 		err = bs->irq ? bs->irq : -ENODEV;
 		goto out_master_put;
 	}

drivers/spi/spi-bcm63xx-hsspi.c

@@ -330,7 +330,6 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
 {
 	struct spi_master *master;
 	struct bcm63xx_hsspi *bs;
-	struct resource *res_mem;
 	void __iomem *regs;
 	struct device *dev = &pdev->dev;
 	struct clk *clk, *pll_clk = NULL;
@@ -338,13 +337,10 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
 	u32 reg, rate, num_cs = HSSPI_SPI_MAX_CS;
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(dev, "no irq: %d\n", irq);
+	if (irq < 0)
 		return irq;
-	}
 
-	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	regs = devm_ioremap_resource(dev, res_mem);
+	regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(regs))
 		return PTR_ERR(regs);
 

drivers/spi/spi-bcm63xx.c

@@ -520,10 +520,8 @@ static int bcm63xx_spi_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(dev, "no irq: %d\n", irq);
+	if (irq < 0)
 		return irq;
-	}
 
 	clk = devm_clk_get(dev, "spi");
 	if (IS_ERR(clk)) {

drivers/spi/spi-cadence.c

@@ -474,7 +474,6 @@ static int cdns_spi_probe(struct platform_device *pdev)
 	int ret = 0, irq;
 	struct spi_master *master;
 	struct cdns_spi *xspi;
-	struct resource *res;
 	u32 num_cs;
 
 	master = spi_alloc_master(&pdev->dev, sizeof(*xspi));
@@ -485,8 +484,7 @@ static int cdns_spi_probe(struct platform_device *pdev)
 	master->dev.of_node = pdev->dev.of_node;
 	platform_set_drvdata(pdev, master);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	xspi->regs = devm_ioremap_resource(&pdev->dev, res);
+	xspi->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(xspi->regs)) {
 		ret = PTR_ERR(xspi->regs);
 		goto remove_master;
@@ -540,7 +538,6 @@ static int cdns_spi_probe(struct platform_device *pdev)
 	irq = platform_get_irq(pdev, 0);
 	if (irq <= 0) {
 		ret = -ENXIO;
-		dev_err(&pdev->dev, "irq number is invalid\n");
 		goto clk_dis_all;
 	}
 

drivers/spi/spi-cavium-octeon.c

@@ -18,7 +18,6 @@
 
 static int octeon_spi_probe(struct platform_device *pdev)
 {
-	struct resource *res_mem;
 	void __iomem *reg_base;
 	struct spi_master *master;
 	struct octeon_spi *p;
@@ -30,8 +29,7 @@ static int octeon_spi_probe(struct platform_device *pdev)
 	p = spi_master_get_devdata(master);
 	platform_set_drvdata(pdev, master);
 
-	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	reg_base = devm_ioremap_resource(&pdev->dev, res_mem);
+	reg_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(reg_base)) {
 		err = PTR_ERR(reg_base);
 		goto fail;

drivers/spi/spi-clps711x.c

@@ -91,7 +91,6 @@ static int spi_clps711x_probe(struct platform_device *pdev)
 {
 	struct spi_clps711x_data *hw;
 	struct spi_master *master;
-	struct resource *res;
 	int irq, ret;
 
 	irq = platform_get_irq(pdev, 0);
@@ -125,8 +124,7 @@ static int spi_clps711x_probe(struct platform_device *pdev)
 		goto err_out;
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	hw->syncio = devm_ioremap_resource(&pdev->dev, res);
+	hw->syncio = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(hw->syncio)) {
 		ret = PTR_ERR(hw->syncio);
 		goto err_out;

drivers/spi/spi-coldfire-qspi.c

@@ -339,7 +339,6 @@ static int mcfqspi_probe(struct platform_device *pdev)
 {
 	struct spi_master *master;
 	struct mcfqspi *mcfqspi;
-	struct resource *res;
 	struct mcfqspi_platform_data *pdata;
 	int status;
 
@@ -362,8 +361,7 @@ static int mcfqspi_probe(struct platform_device *pdev)
 
 	mcfqspi = spi_master_get_devdata(master);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	mcfqspi->iobase = devm_ioremap_resource(&pdev->dev, res);
+	mcfqspi->iobase = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(mcfqspi->iobase)) {
 		status = PTR_ERR(mcfqspi->iobase);
 		goto fail0;

drivers/spi/spi-dw-mmio.c

@@ -79,14 +79,12 @@ static int dw_spi_mscc_init(struct platform_device *pdev,
 			    const char *cpu_syscon, u32 if_si_owner_offset)
 {
 	struct dw_spi_mscc *dwsmscc;
-	struct resource *res;
 
 	dwsmscc = devm_kzalloc(&pdev->dev, sizeof(*dwsmscc), GFP_KERNEL);
 	if (!dwsmscc)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	dwsmscc->spi_mst = devm_ioremap_resource(&pdev->dev, res);
+	dwsmscc->spi_mst = devm_platform_ioremap_resource(pdev, 1);
 	if (IS_ERR(dwsmscc->spi_mst)) {
 		dev_err(&pdev->dev, "SPI_MST region map failed\n");
 		return PTR_ERR(dwsmscc->spi_mst);
@@ -138,7 +136,6 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
 			 struct dw_spi_mmio *dwsmmio);
 	struct dw_spi_mmio *dwsmmio;
 	struct dw_spi *dws;
-	struct resource *mem;
 	int ret;
 	int num_cs;
 
@@ -150,18 +147,15 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
 	dws = &dwsmmio->dws;
 
 	/* Get basic io resource and map it */
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	dws->regs = devm_ioremap_resource(&pdev->dev, mem);
+	dws->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(dws->regs)) {
 		dev_err(&pdev->dev, "SPI region map failed\n");
 		return PTR_ERR(dws->regs);
 	}
 
 	dws->irq = platform_get_irq(pdev, 0);
-	if (dws->irq < 0) {
-		dev_err(&pdev->dev, "no irq resource?\n");
+	if (dws->irq < 0)
 		return dws->irq; /* -ENXIO */
-	}
 
 	dwsmmio->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(dwsmmio->clk))
@@ -172,8 +166,10 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
 
 	/* Optional clock needed to access the registers */
 	dwsmmio->pclk = devm_clk_get_optional(&pdev->dev, "pclk");
-	if (IS_ERR(dwsmmio->pclk))
-		return PTR_ERR(dwsmmio->pclk);
+	if (IS_ERR(dwsmmio->pclk)) {
+		ret = PTR_ERR(dwsmmio->pclk);
+		goto out_clk;
+	}
 	ret = clk_prepare_enable(dwsmmio->pclk);
 	if (ret)
 		goto out_clk;

drivers/spi/spi-dw-pci.c

@@ -19,6 +19,7 @@ struct spi_pci_desc {
 	int	(*setup)(struct dw_spi *);
 	u16	num_cs;
 	u16	bus_num;
+	u32	max_freq;
 };
 
 static struct spi_pci_desc spi_pci_mid_desc_1 = {
@@ -33,6 +34,12 @@ static struct spi_pci_desc spi_pci_mid_desc_2 = {
 	.bus_num = 1,
 };
 
+static struct spi_pci_desc spi_pci_ehl_desc = {
+	.num_cs = 1,
+	.bus_num = -1,
+	.max_freq = 100000000,
+};
+
 static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	struct dw_spi *dws;
@@ -65,6 +72,7 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (desc) {
 		dws->num_cs = desc->num_cs;
 		dws->bus_num = desc->bus_num;
+		dws->max_freq = desc->max_freq;
 
 		if (desc->setup) {
 			ret = desc->setup(dws);
@@ -98,16 +106,14 @@ static void spi_pci_remove(struct pci_dev *pdev)
 #ifdef CONFIG_PM_SLEEP
 static int spi_suspend(struct device *dev)
 {
-	struct pci_dev *pdev = to_pci_dev(dev);
-	struct dw_spi *dws = pci_get_drvdata(pdev);
+	struct dw_spi *dws = dev_get_drvdata(dev);
 
 	return dw_spi_suspend_host(dws);
 }
 
 static int spi_resume(struct device *dev)
 {
-	struct pci_dev *pdev = to_pci_dev(dev);
-	struct dw_spi *dws = pci_get_drvdata(pdev);
+	struct dw_spi *dws = dev_get_drvdata(dev);
 
 	return dw_spi_resume_host(dws);
 }
@@ -125,8 +131,14 @@ static const struct pci_device_id pci_ids[] = {
 	{ PCI_VDEVICE(INTEL, 0x0800), (kernel_ulong_t)&spi_pci_mid_desc_1},
 	/* Intel MID platform SPI controller 2 */
 	{ PCI_VDEVICE(INTEL, 0x0812), (kernel_ulong_t)&spi_pci_mid_desc_2},
+	/* Intel Elkhart Lake PSE SPI controllers */
+	{ PCI_VDEVICE(INTEL, 0x4b84), (kernel_ulong_t)&spi_pci_ehl_desc},
+	{ PCI_VDEVICE(INTEL, 0x4b85), (kernel_ulong_t)&spi_pci_ehl_desc},
+	{ PCI_VDEVICE(INTEL, 0x4b86), (kernel_ulong_t)&spi_pci_ehl_desc},
+	{ PCI_VDEVICE(INTEL, 0x4b87), (kernel_ulong_t)&spi_pci_ehl_desc},
 	{},
 };
+MODULE_DEVICE_TABLE(pci, pci_ids);
 
 static struct pci_driver dw_spi_driver = {
 	.name =		DRIVER_NAME,

drivers/spi/spi-efm32.c

@@ -400,10 +400,8 @@ static int efm32_spi_probe(struct platform_device *pdev)
 	}
 
 	ret = platform_get_irq(pdev, 0);
-	if (ret <= 0) {
-		dev_err(&pdev->dev, "failed to get rx irq (%d)\n", ret);
+	if (ret <= 0)
 		goto err;
-	}
 
 	ddata->rxirq = ret;
 

drivers/spi/spi-ep93xx.c

@@ -656,10 +656,8 @@ static int ep93xx_spi_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "failed to get irq resources\n");
+	if (irq < 0)
 		return -EBUSY;
-	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {

drivers/spi/spi-fsl-cpm.c

@@ -305,12 +305,10 @@ int fsl_spi_cpm_init(struct mpc8xxx_spi *mspi)
 	}
 
 	if (mspi->flags & SPI_CPM1) {
-		struct resource *res;
 		void *pram;
 
-		res = platform_get_resource(to_platform_device(dev),
-					    IORESOURCE_MEM, 1);
-		pram = devm_ioremap_resource(dev, res);
+		pram = devm_platform_ioremap_resource(to_platform_device(dev),
+						      1);
 		if (IS_ERR(pram))
 			mspi->pram = NULL;
 		else

drivers/spi/spi-fsl-lib.h

@@ -91,9 +91,6 @@ static inline u32 mpc8xxx_spi_read_reg(__be32 __iomem *reg)
 
 struct mpc8xxx_spi_probe_info {
 	struct fsl_spi_platform_data pdata;
-	int ngpios;
-	int *gpios;
-	bool *alow_flags;
 	__be32 __iomem *immr_spi_cs;
 };
 

drivers/spi/spi-fsl-qspi.c

@@ -860,10 +860,8 @@ static int fsl_qspi_probe(struct platform_device *pdev)
 
 	/* find the irq */
 	ret = platform_get_irq(pdev, 0);
-	if (ret < 0) {
-		dev_err(dev, "failed to get the irq: %d\n", ret);
+	if (ret < 0)
 		goto err_disable_clk;
-	}
 
 	ret = devm_request_irq(dev, ret,
 			fsl_qspi_irq_handler, 0, pdev->name, q);

drivers/spi/spi-fsl-spi.c

@@ -18,7 +18,7 @@
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/fsl_devices.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/kernel.h>
@@ -28,7 +28,6 @@
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
-#include <linux/of_gpio.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
@@ -481,32 +480,6 @@ static int fsl_spi_setup(struct spi_device *spi)
 		return retval;
 	}
 
-	if (mpc8xxx_spi->type == TYPE_GRLIB) {
-		if (gpio_is_valid(spi->cs_gpio)) {
-			int desel;
-
-			retval = gpio_request(spi->cs_gpio,
-					      dev_name(&spi->dev));
-			if (retval)
-				return retval;
-
-			desel = !(spi->mode & SPI_CS_HIGH);
-			retval = gpio_direction_output(spi->cs_gpio, desel);
-			if (retval) {
-				gpio_free(spi->cs_gpio);
-				return retval;
-			}
-		} else if (spi->cs_gpio != -ENOENT) {
-			if (spi->cs_gpio < 0)
-				return spi->cs_gpio;
-			return -EINVAL;
-		}
-		/* When spi->cs_gpio == -ENOENT, a hole in the phandle list
-		 * indicates to use native chipselect if present, or allow for
-		 * an always selected chip
-		 */
-	}
-
 	/* Initialize chipselect - might be active for SPI_CS_HIGH mode */
 	fsl_spi_chipselect(spi, BITBANG_CS_INACTIVE);
 
@@ -515,12 +488,8 @@ static int fsl_spi_setup(struct spi_device *spi)
 
 static void fsl_spi_cleanup(struct spi_device *spi)
 {
-	struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master);
 	struct spi_mpc8xxx_cs *cs = spi_get_ctldata(spi);
 
-	if (mpc8xxx_spi->type == TYPE_GRLIB && gpio_is_valid(spi->cs_gpio))
-		gpio_free(spi->cs_gpio);
-
 	kfree(cs);
 	spi_set_ctldata(spi, NULL);
 }
@@ -586,8 +555,8 @@ static void fsl_spi_grlib_cs_control(struct spi_device *spi, bool on)
 	u32 slvsel;
 	u16 cs = spi->chip_select;
 
-	if (gpio_is_valid(spi->cs_gpio)) {
-		gpio_set_value(spi->cs_gpio, on);
+	if (spi->cs_gpiod) {
+		gpiod_set_value(spi->cs_gpiod, on);
 	} else if (cs < mpc8xxx_spi->native_chipselects) {
 		slvsel = mpc8xxx_spi_read_reg(&reg_base->slvsel);
 		slvsel = on ? (slvsel | (1 << cs)) : (slvsel & ~(1 << cs));
@@ -718,139 +687,19 @@ static struct spi_master * fsl_spi_probe(struct device *dev,
 
 static void fsl_spi_cs_control(struct spi_device *spi, bool on)
 {
-	struct device *dev = spi->dev.parent->parent;
-	struct fsl_spi_platform_data *pdata = dev_get_platdata(dev);
-	struct mpc8xxx_spi_probe_info *pinfo = to_of_pinfo(pdata);
-	u16 cs = spi->chip_select;
-
-	if (cs < pinfo->ngpios) {
-		int gpio = pinfo->gpios[cs];
-		bool alow = pinfo->alow_flags[cs];
-
-		gpio_set_value(gpio, on ^ alow);
+	if (spi->cs_gpiod) {
+		gpiod_set_value(spi->cs_gpiod, on);
 	} else {
-		if (WARN_ON_ONCE(cs > pinfo->ngpios || !pinfo->immr_spi_cs))
+		struct device *dev = spi->dev.parent->parent;
+		struct fsl_spi_platform_data *pdata = dev_get_platdata(dev);
+		struct mpc8xxx_spi_probe_info *pinfo = to_of_pinfo(pdata);
+
+		if (WARN_ON_ONCE(!pinfo->immr_spi_cs))
 			return;
 		iowrite32be(on ? SPI_BOOT_SEL_BIT : 0, pinfo->immr_spi_cs);
 	}
 }
 
-static int of_fsl_spi_get_chipselects(struct device *dev)
-{
-	struct device_node *np = dev->of_node;
-	struct fsl_spi_platform_data *pdata = dev_get_platdata(dev);
-	struct mpc8xxx_spi_probe_info *pinfo = to_of_pinfo(pdata);
-	bool spisel_boot = IS_ENABLED(CONFIG_FSL_SOC) &&
-		of_property_read_bool(np, "fsl,spisel_boot");
-	int ngpios;
-	int i = 0;
-	int ret;
-
-	ngpios = of_gpio_count(np);
-	ngpios = max(ngpios, 0);
-	if (ngpios == 0 && !spisel_boot) {
-		/*
-		 * SPI w/o chip-select line. One SPI device is still permitted
-		 * though.
-		 */
-		pdata->max_chipselect = 1;
-		return 0;
-	}
-
-	pinfo->ngpios = ngpios;
-	pinfo->gpios = kmalloc_array(ngpios, sizeof(*pinfo->gpios),
-				     GFP_KERNEL);
-	if (!pinfo->gpios)
-		return -ENOMEM;
-	memset(pinfo->gpios, -1, ngpios * sizeof(*pinfo->gpios));
-
-	pinfo->alow_flags = kcalloc(ngpios, sizeof(*pinfo->alow_flags),
-				    GFP_KERNEL);
-	if (!pinfo->alow_flags) {
-		ret = -ENOMEM;
-		goto err_alloc_flags;
-	}
-
-	for (; i < ngpios; i++) {
-		int gpio;
-		enum of_gpio_flags flags;
-
-		gpio = of_get_gpio_flags(np, i, &flags);
-		if (!gpio_is_valid(gpio)) {
-			dev_err(dev, "invalid gpio #%d: %d\n", i, gpio);
-			ret = gpio;
-			goto err_loop;
-		}
-
-		ret = gpio_request(gpio, dev_name(dev));
-		if (ret) {
-			dev_err(dev, "can't request gpio #%d: %d\n", i, ret);
-			goto err_loop;
-		}
-
-		pinfo->gpios[i] = gpio;
-		pinfo->alow_flags[i] = flags & OF_GPIO_ACTIVE_LOW;
-
-		ret = gpio_direction_output(pinfo->gpios[i],
-					    pinfo->alow_flags[i]);
-		if (ret) {
-			dev_err(dev,
-				"can't set output direction for gpio #%d: %d\n",
-				i, ret);
-			goto err_loop;
-		}
-	}
-
-#if IS_ENABLED(CONFIG_FSL_SOC)
-	if (spisel_boot) {
-		pinfo->immr_spi_cs = ioremap(get_immrbase() + IMMR_SPI_CS_OFFSET, 4);
-		if (!pinfo->immr_spi_cs) {
-			ret = -ENOMEM;
-			i = ngpios - 1;
-			goto err_loop;
-		}
-	}
-#endif
-
-	pdata->max_chipselect = ngpios + spisel_boot;
-	pdata->cs_control = fsl_spi_cs_control;
-
-	return 0;
-
-err_loop:
-	while (i >= 0) {
-		if (gpio_is_valid(pinfo->gpios[i]))
-			gpio_free(pinfo->gpios[i]);
-		i--;
-	}
-
-	kfree(pinfo->alow_flags);
-	pinfo->alow_flags = NULL;
-err_alloc_flags:
-	kfree(pinfo->gpios);
-	pinfo->gpios = NULL;
-	return ret;
-}
-
-static int of_fsl_spi_free_chipselects(struct device *dev)
-{
-	struct fsl_spi_platform_data *pdata = dev_get_platdata(dev);
-	struct mpc8xxx_spi_probe_info *pinfo = to_of_pinfo(pdata);
-	int i;
-
-	if (!pinfo->gpios)
-		return 0;
-
-	for (i = 0; i < pdata->max_chipselect; i++) {
-		if (gpio_is_valid(pinfo->gpios[i]))
-			gpio_free(pinfo->gpios[i]);
-	}
-
-	kfree(pinfo->gpios);
-	kfree(pinfo->alow_flags);
-	return 0;
-}
-
 static int of_fsl_spi_probe(struct platform_device *ofdev)
 {
 	struct device *dev = &ofdev->dev;
@@ -866,9 +715,21 @@ static int of_fsl_spi_probe(struct platform_device *ofdev)
 
 	type = fsl_spi_get_type(&ofdev->dev);
 	if (type == TYPE_FSL) {
-		ret = of_fsl_spi_get_chipselects(dev);
-		if (ret)
-			goto err;
+		struct fsl_spi_platform_data *pdata = dev_get_platdata(dev);
+#if IS_ENABLED(CONFIG_FSL_SOC)
+		struct mpc8xxx_spi_probe_info *pinfo = to_of_pinfo(pdata);
+		bool spisel_boot = of_property_read_bool(np, "fsl,spisel_boot");
+
+		if (spisel_boot) {
+			pinfo->immr_spi_cs = ioremap(get_immrbase() + IMMR_SPI_CS_OFFSET, 4);
+			if (!pinfo->immr_spi_cs) {
+				ret = -ENOMEM;
+				goto err;
+			}
+		}
+#endif
+
+		pdata->cs_control = fsl_spi_cs_control;
 	}
 
 	ret = of_address_to_resource(np, 0, &mem);
@@ -891,8 +752,6 @@ static int of_fsl_spi_probe(struct platform_device *ofdev)
 
 err:
 	irq_dispose_mapping(irq);
-	if (type == TYPE_FSL)
-		of_fsl_spi_free_chipselects(dev);
 	return ret;
 }
 
@@ -902,8 +761,6 @@ static int of_fsl_spi_remove(struct platform_device *ofdev)
 	struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(master);
 
 	fsl_spi_cpm_free(mpc8xxx_spi);
-	if (mpc8xxx_spi->type == TYPE_FSL)
-		of_fsl_spi_free_chipselects(&ofdev->dev);
 	return 0;
 }
 

drivers/spi/spi-geni-qcom.c

@@ -534,18 +534,14 @@ static int spi_geni_probe(struct platform_device *pdev)
 	int ret, irq;
 	struct spi_master *spi;
 	struct spi_geni_master *mas;
-	struct resource *res;
 	void __iomem *base;
 	struct clk *clk;
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "Err getting IRQ %d\n", irq);
+	if (irq < 0)
 		return irq;
-	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(&pdev->dev, res);
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 

drivers/spi/spi-gpio.c

@@ -290,10 +290,7 @@ static int spi_gpio_request(struct device *dev, struct spi_gpio *spi_gpio)
 		return PTR_ERR(spi_gpio->miso);
 
 	spi_gpio->sck = devm_gpiod_get(dev, "sck", GPIOD_OUT_LOW);
-	if (IS_ERR(spi_gpio->sck))
-		return PTR_ERR(spi_gpio->sck);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(spi_gpio->sck);
 }
 
 #ifdef CONFIG_OF

drivers/spi/spi-lantiq-ssc.c

@@ -819,22 +819,16 @@ static int lantiq_ssc_probe(struct platform_device *pdev)
 	}
 
 	rx_irq = platform_get_irq_byname(pdev, LTQ_SPI_RX_IRQ_NAME);
-	if (rx_irq < 0) {
-		dev_err(dev, "failed to get %s\n", LTQ_SPI_RX_IRQ_NAME);
+	if (rx_irq < 0)
 		return -ENXIO;
-	}
 
 	tx_irq = platform_get_irq_byname(pdev, LTQ_SPI_TX_IRQ_NAME);
-	if (tx_irq < 0) {
-		dev_err(dev, "failed to get %s\n", LTQ_SPI_TX_IRQ_NAME);
+	if (tx_irq < 0)
 		return -ENXIO;
-	}
 
 	err_irq = platform_get_irq_byname(pdev, LTQ_SPI_ERR_IRQ_NAME);
-	if (err_irq < 0) {
-		dev_err(dev, "failed to get %s\n", LTQ_SPI_ERR_IRQ_NAME);
+	if (err_irq < 0)
 		return -ENXIO;
-	}
 
 	master = spi_alloc_master(dev, sizeof(struct lantiq_ssc_spi));
 	if (!master)

drivers/spi/spi-lp8841-rtc.c

@@ -185,7 +185,6 @@ spi_lp8841_rtc_probe(struct platform_device *pdev)
 	int				ret;
 	struct spi_master		*master;
 	struct spi_lp8841_rtc		*data;
-	void				*iomem;
 
 	master = spi_alloc_master(&pdev->dev, sizeof(*data));
 	if (!master)
@@ -207,8 +206,7 @@ spi_lp8841_rtc_probe(struct platform_device *pdev)
 
 	data = spi_master_get_devdata(master);
 
-	iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	data->iomem = devm_ioremap_resource(&pdev->dev, iomem);
+	data->iomem = devm_platform_ioremap_resource(pdev, 0);
 	ret = PTR_ERR_OR_ZERO(data->iomem);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to get IO address\n");

drivers/spi/spi-meson-spicc.c

@@ -503,7 +503,6 @@ static int meson_spicc_probe(struct platform_device *pdev)
 {
 	struct spi_master *master;
 	struct meson_spicc_device *spicc;
-	struct resource *res;
 	int ret, irq, rate;
 
 	master = spi_alloc_master(&pdev->dev, sizeof(*spicc));
@@ -517,8 +516,7 @@ static int meson_spicc_probe(struct platform_device *pdev)
 	spicc->pdev = pdev;
 	platform_set_drvdata(pdev, spicc);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	spicc->base = devm_ioremap_resource(&pdev->dev, res);
+	spicc->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(spicc->base)) {
 		dev_err(&pdev->dev, "io resource mapping failed\n");
 		ret = PTR_ERR(spicc->base);

drivers/spi/spi-meson-spifc.c

@@ -286,7 +286,6 @@ static int meson_spifc_probe(struct platform_device *pdev)
 {
 	struct spi_master *master;
 	struct meson_spifc *spifc;
-	struct resource *res;
 	void __iomem *base;
 	unsigned int rate;
 	int ret = 0;
@@ -300,8 +299,7 @@ static int meson_spifc_probe(struct platform_device *pdev)
 	spifc = spi_master_get_devdata(master);
 	spifc->dev = &pdev->dev;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(spifc->dev, res);
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base)) {
 		ret = PTR_ERR(base);
 		goto out_err;

drivers/spi/spi-mt65xx.c

@@ -17,6 +17,7 @@
 #include <linux/platform_data/spi-mt65xx.h>
 #include <linux/pm_runtime.h>
 #include <linux/spi/spi.h>
+#include <linux/dma-mapping.h>
 
 #define SPI_CFG0_REG                      0x0000
 #define SPI_CFG1_REG                      0x0004
@@ -28,6 +29,8 @@
 #define SPI_STATUS0_REG                   0x001c
 #define SPI_PAD_SEL_REG                   0x0024
 #define SPI_CFG2_REG                      0x0028
+#define SPI_TX_SRC_REG_64                 0x002c
+#define SPI_RX_DST_REG_64                 0x0030
 
 #define SPI_CFG0_SCK_HIGH_OFFSET          0
 #define SPI_CFG0_SCK_LOW_OFFSET           8
@@ -73,6 +76,10 @@
 
 #define MTK_SPI_MAX_FIFO_SIZE 32U
 #define MTK_SPI_PACKET_SIZE 1024
+#define MTK_SPI_32BITS_MASK  (0xffffffff)
+
+#define DMA_ADDR_EXT_BITS (36)
+#define DMA_ADDR_DEF_BITS (32)
 
 struct mtk_spi_compatible {
 	bool need_pad_sel;
@@ -80,6 +87,8 @@ struct mtk_spi_compatible {
 	bool must_tx;
 	/* some IC design adjust cfg register to enhance time accuracy */
 	bool enhance_timing;
+	/* some IC support DMA addr extension */
+	bool dma_ext;
 };
 
 struct mtk_spi {
@@ -102,6 +111,13 @@ static const struct mtk_spi_compatible mt2712_compat = {
 	.must_tx = true,
 };
 
+static const struct mtk_spi_compatible mt6765_compat = {
+	.need_pad_sel = true,
+	.must_tx = true,
+	.enhance_timing = true,
+	.dma_ext = true,
+};
+
 static const struct mtk_spi_compatible mt7622_compat = {
 	.must_tx = true,
 	.enhance_timing = true,
@@ -137,6 +153,9 @@ static const struct of_device_id mtk_spi_of_match[] = {
 	{ .compatible = "mediatek,mt6589-spi",
 		.data = (void *)&mtk_common_compat,
 	},
+	{ .compatible = "mediatek,mt6765-spi",
+		.data = (void *)&mt6765_compat,
+	},
 	{ .compatible = "mediatek,mt7622-spi",
 		.data = (void *)&mt7622_compat,
 	},
@@ -371,10 +390,25 @@ static void mtk_spi_setup_dma_addr(struct spi_master *master,
 {
 	struct mtk_spi *mdata = spi_master_get_devdata(master);
 
-	if (mdata->tx_sgl)
-		writel(xfer->tx_dma, mdata->base + SPI_TX_SRC_REG);
-	if (mdata->rx_sgl)
-		writel(xfer->rx_dma, mdata->base + SPI_RX_DST_REG);
+	if (mdata->tx_sgl) {
+		writel((u32)(xfer->tx_dma & MTK_SPI_32BITS_MASK),
+		       mdata->base + SPI_TX_SRC_REG);
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+		if (mdata->dev_comp->dma_ext)
+			writel((u32)(xfer->tx_dma >> 32),
+			       mdata->base + SPI_TX_SRC_REG_64);
+#endif
+	}
+
+	if (mdata->rx_sgl) {
+		writel((u32)(xfer->rx_dma & MTK_SPI_32BITS_MASK),
+		       mdata->base + SPI_RX_DST_REG);
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+		if (mdata->dev_comp->dma_ext)
+			writel((u32)(xfer->rx_dma >> 32),
+			       mdata->base + SPI_RX_DST_REG_64);
+#endif
+	}
 }
 
 static int mtk_spi_fifo_transfer(struct spi_master *master,
@@ -586,7 +620,7 @@ static int mtk_spi_probe(struct platform_device *pdev)
 	struct mtk_spi *mdata;
 	const struct of_device_id *of_id;
 	struct resource *res;
-	int i, irq, ret;
+	int i, irq, ret, addr_bits;
 
 	master = spi_alloc_master(&pdev->dev, sizeof(*mdata));
 	if (!master) {
@@ -664,7 +698,6 @@ static int mtk_spi_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(&pdev->dev, "failed to get irq (%d)\n", irq);
 		ret = irq;
 		goto err_put_master;
 	}
@@ -753,6 +786,15 @@ static int mtk_spi_probe(struct platform_device *pdev)
 		}
 	}
 
+	if (mdata->dev_comp->dma_ext)
+		addr_bits = DMA_ADDR_EXT_BITS;
+	else
+		addr_bits = DMA_ADDR_DEF_BITS;
+	ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(addr_bits));
+	if (ret)
+		dev_notice(&pdev->dev, "SPI dma_set_mask(%d) failed, ret:%d\n",
+			   addr_bits, ret);
+
 	return 0;
 
 err_disable_runtime_pm:

drivers/spi/spi-mt7621.c

@@ -327,7 +327,6 @@ static int mt7621_spi_probe(struct platform_device *pdev)
 	struct spi_controller *master;
 	struct mt7621_spi *rs;
 	void __iomem *base;
-	struct resource *r;
 	int status = 0;
 	struct clk *clk;
 	int ret;
@@ -336,8 +335,7 @@ static int mt7621_spi_probe(struct platform_device *pdev)
 	if (!match)
 		return -EINVAL;
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(&pdev->dev, r);
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 

drivers/spi/spi-mxs.c

@@ -532,7 +532,6 @@ static int mxs_spi_probe(struct platform_device *pdev)
 	struct spi_master *master;
 	struct mxs_spi *spi;
 	struct mxs_ssp *ssp;
-	struct resource *iores;
 	struct clk *clk;
 	void __iomem *base;
 	int devid, clk_freq;
@@ -545,12 +544,11 @@ static int mxs_spi_probe(struct platform_device *pdev)
 	 */
 	const int clk_freq_default = 160000000;
 
-	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	irq_err = platform_get_irq(pdev, 0);
 	if (irq_err < 0)
 		return irq_err;
 
-	base = devm_ioremap_resource(&pdev->dev, iores);
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 

drivers/spi/spi-npcm-pspi.c

@@ -341,7 +341,6 @@ static int npcm_pspi_probe(struct platform_device *pdev)
 {
 	struct npcm_pspi *priv;
 	struct spi_master *master;
-	struct resource *res;
 	unsigned long clk_hz;
 	struct device_node *np = pdev->dev.of_node;
 	int num_cs, i;
@@ -368,8 +367,7 @@ static int npcm_pspi_probe(struct platform_device *pdev)
 	priv->is_save_param = false;
 	priv->id = pdev->id;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->base = devm_ioremap_resource(&pdev->dev, res);
+	priv->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->base)) {
 		ret = PTR_ERR(priv->base);
 		goto out_master_put;
@@ -388,7 +386,6 @@ static int npcm_pspi_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(&pdev->dev, "failed to get IRQ\n");
 		ret = irq;
 		goto out_disable_clk;
 	}

drivers/spi/spi-nuc900.c

@@ -327,7 +327,6 @@ static int nuc900_spi_probe(struct platform_device *pdev)
 {
 	struct nuc900_spi *hw;
 	struct spi_master *master;
-	struct resource *res;
 	int err = 0;
 
 	master = spi_alloc_master(&pdev->dev, sizeof(struct nuc900_spi));
@@ -358,8 +357,7 @@ static int nuc900_spi_probe(struct platform_device *pdev)
 	hw->bitbang.chipselect     = nuc900_spi_chipsel;
 	hw->bitbang.txrx_bufs      = nuc900_spi_txrx;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	hw->regs = devm_ioremap_resource(&pdev->dev, res);
+	hw->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(hw->regs)) {
 		err = PTR_ERR(hw->regs);
 		goto err_pdata;
@@ -367,7 +365,6 @@ static int nuc900_spi_probe(struct platform_device *pdev)
 
 	hw->irq = platform_get_irq(pdev, 0);
 	if (hw->irq < 0) {
-		dev_err(&pdev->dev, "No IRQ specified\n");
 		err = -ENOENT;
 		goto err_pdata;
 	}

drivers/spi/spi-nxp-fspi.c

@@ -1007,10 +1007,8 @@ static int nxp_fspi_probe(struct platform_device *pdev)
 
 	/* find the irq */
 	ret = platform_get_irq(pdev, 0);
-	if (ret < 0) {
-		dev_err(dev, "failed to get the irq: %d\n", ret);
+	if (ret < 0)
 		goto err_disable_clk;
-	}
 
 	ret = devm_request_irq(dev, ret,
 			nxp_fspi_irq_handler, 0, pdev->name, f);

drivers/spi/spi-oc-tiny.c

@@ -240,7 +240,6 @@ static int tiny_spi_probe(struct platform_device *pdev)
 	struct tiny_spi_platform_data *platp = dev_get_platdata(&pdev->dev);
 	struct tiny_spi *hw;
 	struct spi_master *master;
-	struct resource *res;
 	unsigned int i;
 	int err = -ENODEV;
 
@@ -264,8 +263,7 @@ static int tiny_spi_probe(struct platform_device *pdev)
 	hw->bitbang.txrx_bufs = tiny_spi_txrx_bufs;
 
 	/* find and map our resources */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	hw->base = devm_ioremap_resource(&pdev->dev, res);
+	hw->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(hw->base)) {
 		err = PTR_ERR(hw->base);
 		goto exit;

drivers/spi/spi-pic32-sqi.c

@@ -570,7 +570,6 @@ static int pic32_sqi_probe(struct platform_device *pdev)
 {
 	struct spi_master *master;
 	struct pic32_sqi *sqi;
-	struct resource *reg;
 	int ret;
 
 	master = spi_alloc_master(&pdev->dev, sizeof(*sqi));
@@ -580,8 +579,7 @@ static int pic32_sqi_probe(struct platform_device *pdev)
 	sqi = spi_master_get_devdata(master);
 	sqi->master = master;
 
-	reg = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	sqi->regs = devm_ioremap_resource(&pdev->dev, reg);
+	sqi->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(sqi->regs)) {
 		ret = PTR_ERR(sqi->regs);
 		goto err_free_master;
@@ -590,7 +588,6 @@ static int pic32_sqi_probe(struct platform_device *pdev)
 	/* irq */
 	sqi->irq = platform_get_irq(pdev, 0);
 	if (sqi->irq < 0) {
-		dev_err(&pdev->dev, "no irq found\n");
 		ret = sqi->irq;
 		goto err_free_master;
 	}

drivers/spi/spi-pic32.c

@@ -711,22 +711,16 @@ static int pic32_spi_hw_probe(struct platform_device *pdev,
 
 	/* get irq resources: err-irq, rx-irq, tx-irq */
 	pic32s->fault_irq = platform_get_irq_byname(pdev, "fault");
-	if (pic32s->fault_irq < 0) {
-		dev_err(&pdev->dev, "fault-irq not found\n");
+	if (pic32s->fault_irq < 0)
 		return pic32s->fault_irq;
-	}
 
 	pic32s->rx_irq = platform_get_irq_byname(pdev, "rx");
-	if (pic32s->rx_irq < 0) {
-		dev_err(&pdev->dev, "rx-irq not found\n");
+	if (pic32s->rx_irq < 0)
 		return pic32s->rx_irq;
-	}
 
 	pic32s->tx_irq = platform_get_irq_byname(pdev, "tx");
-	if (pic32s->tx_irq < 0) {
-		dev_err(&pdev->dev, "tx-irq not found\n");
+	if (pic32s->tx_irq < 0)
 		return pic32s->tx_irq;
-	}
 
 	/* get clock */
 	pic32s->clk = devm_clk_get(&pdev->dev, "mck0");

drivers/spi/spi-qcom-qspi.c

@@ -424,7 +424,6 @@ static int qcom_qspi_probe(struct platform_device *pdev)
 {
 	int ret;
 	struct device *dev;
-	struct resource *res;
 	struct spi_master *master;
 	struct qcom_qspi *ctrl;
 
@@ -440,8 +439,7 @@ static int qcom_qspi_probe(struct platform_device *pdev)
 
 	spin_lock_init(&ctrl->lock);
 	ctrl->dev = dev;
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	ctrl->base = devm_ioremap_resource(dev, res);
+	ctrl->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(ctrl->base)) {
 		ret = PTR_ERR(ctrl->base);
 		goto exit_probe_master_put;
@@ -454,10 +452,8 @@ static int qcom_qspi_probe(struct platform_device *pdev)
 		goto exit_probe_master_put;
 
 	ret = platform_get_irq(pdev, 0);
-	if (ret < 0) {
-		dev_err(dev, "Failed to get irq %d\n", ret);
+	if (ret < 0)
 		goto exit_probe_master_put;
-	}
 	ret = devm_request_irq(dev, ret, qcom_qspi_irq,
 			IRQF_TRIGGER_HIGH, dev_name(dev), ctrl);
 	if (ret) {

drivers/spi/spi-rb4xx.c

@@ -135,12 +135,10 @@ static int rb4xx_spi_probe(struct platform_device *pdev)
 	struct spi_master *master;
 	struct clk *ahb_clk;
 	struct rb4xx_spi *rbspi;
-	struct resource *r;
 	int err;
 	void __iomem *spi_base;
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	spi_base = devm_ioremap_resource(&pdev->dev, r);
+	spi_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(spi_base))
 		return PTR_ERR(spi_base);
 

drivers/spi/spi-s3c24xx.c

@@ -487,7 +487,6 @@ static int s3c24xx_spi_probe(struct platform_device *pdev)
 	struct s3c2410_spi_info *pdata;
 	struct s3c24xx_spi *hw;
 	struct spi_master *master;
-	struct resource *res;
 	int err = 0;
 
 	master = spi_alloc_master(&pdev->dev, sizeof(struct s3c24xx_spi));
@@ -536,8 +535,7 @@ static int s3c24xx_spi_probe(struct platform_device *pdev)
 	dev_dbg(hw->dev, "bitbang at %p\n", &hw->bitbang);
 
 	/* find and map our resources */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	hw->regs = devm_ioremap_resource(&pdev->dev, res);
+	hw->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(hw->regs)) {
 		err = PTR_ERR(hw->regs);
 		goto err_no_pdata;
@@ -545,7 +543,6 @@ static int s3c24xx_spi_probe(struct platform_device *pdev)
 
 	hw->irq = platform_get_irq(pdev, 0);
 	if (hw->irq < 0) {
-		dev_err(&pdev->dev, "No IRQ specified\n");
 		err = -ENOENT;
 		goto err_no_pdata;
 	}

drivers/spi/spi-sh-msiof.c

@@ -1297,7 +1297,6 @@ static void sh_msiof_release_dma(struct sh_msiof_spi_priv *p)
 
 static int sh_msiof_spi_probe(struct platform_device *pdev)
 {
-	struct resource	*r;
 	struct spi_controller *ctlr;
 	const struct sh_msiof_chipdata *chipdata;
 	struct sh_msiof_spi_info *info;
@@ -1346,13 +1345,11 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
 
 	i = platform_get_irq(pdev, 0);
 	if (i < 0) {
-		dev_err(&pdev->dev, "cannot get IRQ\n");
 		ret = i;
 		goto err1;
 	}
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	p->mapbase = devm_ioremap_resource(&pdev->dev, r);
+	p->mapbase = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(p->mapbase)) {
 		ret = PTR_ERR(p->mapbase);
 		goto err1;

drivers/spi/spi-sh.c

@@ -437,10 +437,8 @@ static int spi_sh_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "platform_get_irq error: %d\n", irq);
+	if (irq < 0)
 		return irq;
-	}
 
 	master = spi_alloc_master(&pdev->dev, sizeof(struct spi_sh_data));
 	if (master == NULL) {

drivers/spi/spi-sifive.c

@@ -292,7 +292,6 @@ sifive_spi_transfer_one(struct spi_master *master, struct spi_device *device,
 static int sifive_spi_probe(struct platform_device *pdev)
 {
 	struct sifive_spi *spi;
-	struct resource *res;
 	int ret, irq, num_cs;
 	u32 cs_bits, max_bits_per_word;
 	struct spi_master *master;
@@ -307,8 +306,7 @@ static int sifive_spi_probe(struct platform_device *pdev)
 	init_completion(&spi->done);
 	platform_set_drvdata(pdev, master);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	spi->regs = devm_ioremap_resource(&pdev->dev, res);
+	spi->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(spi->regs)) {
 		ret = PTR_ERR(spi->regs);
 		goto put_master;
@@ -323,7 +321,6 @@ static int sifive_spi_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(&pdev->dev, "Unable to find interrupt\n");
 		ret = irq;
 		goto put_master;
 	}

drivers/spi/spi-sirf.c

@@ -1070,7 +1070,6 @@ static int spi_sirfsoc_probe(struct platform_device *pdev)
 {
 	struct sirfsoc_spi *sspi;
 	struct spi_master *master;
-	struct resource *mem_res;
 	const struct sirf_spi_comp_data *spi_comp_data;
 	int irq;
 	int ret;
@@ -1097,8 +1096,7 @@ static int spi_sirfsoc_probe(struct platform_device *pdev)
 	sspi->fifo_level_chk_mask = (sspi->fifo_size / 4) - 1;
 	sspi->dat_max_frm_len = spi_comp_data->dat_max_frm_len;
 	sspi->fifo_size = spi_comp_data->fifo_size;
-	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	sspi->base = devm_ioremap_resource(&pdev->dev, mem_res);
+	sspi->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(sspi->base)) {
 		ret = PTR_ERR(sspi->base);
 		goto free_master;

drivers/spi/spi-slave-mt27xx.c

@@ -410,7 +410,6 @@ static int mtk_spi_slave_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(&pdev->dev, "failed to get irq (%d)\n", irq);
 		ret = irq;
 		goto err_put_ctlr;
 	}

drivers/spi/spi-sprd-adi.c

@@ -86,6 +86,7 @@
 #define BIT_WDG_EN			BIT(2)
 
 /* Definition of PMIC reset status register */
+#define HWRST_STATUS_SECURITY		0x02
 #define HWRST_STATUS_RECOVERY		0x20
 #define HWRST_STATUS_NORMAL		0x40
 #define HWRST_STATUS_ALARM		0x50
@@ -97,6 +98,8 @@
 #define HWRST_STATUS_AUTODLOADER	0xa0
 #define HWRST_STATUS_IQMODE		0xb0
 #define HWRST_STATUS_SPRDISK		0xc0
+#define HWRST_STATUS_FACTORYTEST	0xe0
+#define HWRST_STATUS_WATCHDOG		0xf0
 
 /* Use default timeout 50 ms that converts to watchdog values */
 #define WDG_LOAD_VAL			((50 * 1000) / 32768)
@@ -162,14 +165,16 @@ static int sprd_adi_read(struct sprd_adi *sadi, u32 reg_paddr, u32 *read_val)
 	int read_timeout = ADI_READ_TIMEOUT;
 	unsigned long flags;
 	u32 val, rd_addr;
-	int ret;
-
-	ret = hwspin_lock_timeout_irqsave(sadi->hwlock,
-					  ADI_HWSPINLOCK_TIMEOUT,
-					  &flags);
-	if (ret) {
-		dev_err(sadi->dev, "get the hw lock failed\n");
-		return ret;
+	int ret = 0;
+
+	if (sadi->hwlock) {
+		ret = hwspin_lock_timeout_irqsave(sadi->hwlock,
+						  ADI_HWSPINLOCK_TIMEOUT,
+						  &flags);
+		if (ret) {
+			dev_err(sadi->dev, "get the hw lock failed\n");
+			return ret;
+		}
 	}
 
 	/*
@@ -216,7 +221,8 @@ static int sprd_adi_read(struct sprd_adi *sadi, u32 reg_paddr, u32 *read_val)
 	*read_val = val & RD_VALUE_MASK;
 
 out:
-	hwspin_unlock_irqrestore(sadi->hwlock, &flags);
+	if (sadi->hwlock)
+		hwspin_unlock_irqrestore(sadi->hwlock, &flags);
 	return ret;
 }
 
@@ -227,12 +233,14 @@ static int sprd_adi_write(struct sprd_adi *sadi, u32 reg_paddr, u32 val)
 	unsigned long flags;
 	int ret;
 
-	ret = hwspin_lock_timeout_irqsave(sadi->hwlock,
-					  ADI_HWSPINLOCK_TIMEOUT,
-					  &flags);
-	if (ret) {
-		dev_err(sadi->dev, "get the hw lock failed\n");
-		return ret;
+	if (sadi->hwlock) {
+		ret = hwspin_lock_timeout_irqsave(sadi->hwlock,
+						  ADI_HWSPINLOCK_TIMEOUT,
+						  &flags);
+		if (ret) {
+			dev_err(sadi->dev, "get the hw lock failed\n");
+			return ret;
+		}
 	}
 
 	ret = sprd_adi_drain_fifo(sadi);
@@ -258,7 +266,8 @@ static int sprd_adi_write(struct sprd_adi *sadi, u32 reg_paddr, u32 val)
 	}
 
 out:
-	hwspin_unlock_irqrestore(sadi->hwlock, &flags);
+	if (sadi->hwlock)
+		hwspin_unlock_irqrestore(sadi->hwlock, &flags);
 	return ret;
 }
 
@@ -307,6 +316,18 @@ static int sprd_adi_transfer_one(struct spi_controller *ctlr,
 	return 0;
 }
 
+static void sprd_adi_set_wdt_rst_mode(struct sprd_adi *sadi)
+{
+#ifdef CONFIG_SPRD_WATCHDOG
+	u32 val;
+
+	/* Set default watchdog reboot mode */
+	sprd_adi_read(sadi, sadi->slave_pbase + PMIC_RST_STATUS, &val);
+	val |= HWRST_STATUS_WATCHDOG;
+	sprd_adi_write(sadi, sadi->slave_pbase + PMIC_RST_STATUS, val);
+#endif
+}
+
 static int sprd_adi_restart_handler(struct notifier_block *this,
 				    unsigned long mode, void *cmd)
 {
@@ -336,11 +357,16 @@ static int sprd_adi_restart_handler(struct notifier_block *this,
 		reboot_mode = HWRST_STATUS_IQMODE;
 	else if (!strncmp(cmd, "sprdisk", 7))
 		reboot_mode = HWRST_STATUS_SPRDISK;
+	else if (!strncmp(cmd, "tospanic", 8))
+		reboot_mode = HWRST_STATUS_SECURITY;
+	else if (!strncmp(cmd, "factorytest", 11))
+		reboot_mode = HWRST_STATUS_FACTORYTEST;
 	else
 		reboot_mode = HWRST_STATUS_NORMAL;
 
 	/* Record the reboot mode */
 	sprd_adi_read(sadi, sadi->slave_pbase + PMIC_RST_STATUS, &val);
+	val &= ~HWRST_STATUS_WATCHDOG;
 	val |= reboot_mode;
 	sprd_adi_write(sadi, sadi->slave_pbase + PMIC_RST_STATUS, val);
 
@@ -380,9 +406,6 @@ static void sprd_adi_hw_init(struct sprd_adi *sadi)
 	const __be32 *list;
 	u32 tmp;
 
-	/* Address bits select default 12 bits */
-	writel_relaxed(0, sadi->base + REG_ADI_CTRL0);
-
 	/* Set all channels as default priority */
 	writel_relaxed(0, sadi->base + REG_ADI_CHN_PRIL);
 	writel_relaxed(0, sadi->base + REG_ADI_CHN_PRIH);
@@ -459,19 +482,30 @@ static int sprd_adi_probe(struct platform_device *pdev)
 	sadi->slave_pbase = res->start + ADI_SLAVE_OFFSET;
 	sadi->ctlr = ctlr;
 	sadi->dev = &pdev->dev;
-	ret = of_hwspin_lock_get_id_byname(np, "adi");
-	if (ret < 0) {
-		dev_err(&pdev->dev, "can not get the hardware spinlock\n");
-		goto put_ctlr;
-	}
-
-	sadi->hwlock = devm_hwspin_lock_request_specific(&pdev->dev, ret);
-	if (!sadi->hwlock) {
-		ret = -ENXIO;
-		goto put_ctlr;
+	ret = of_hwspin_lock_get_id(np, 0);
+	if (ret > 0 || (IS_ENABLED(CONFIG_HWSPINLOCK) && ret == 0)) {
+		sadi->hwlock =
+			devm_hwspin_lock_request_specific(&pdev->dev, ret);
+		if (!sadi->hwlock) {
+			ret = -ENXIO;
+			goto put_ctlr;
+		}
+	} else {
+		switch (ret) {
+		case -ENOENT:
+			dev_info(&pdev->dev, "no hardware spinlock supplied\n");
+			break;
+		default:
+			dev_err(&pdev->dev,
+				"failed to find hwlock id, %d\n", ret);
+			/* fall-through */
+		case -EPROBE_DEFER:
+			goto put_ctlr;
+		}
 	}
 
 	sprd_adi_hw_init(sadi);
+	sprd_adi_set_wdt_rst_mode(sadi);
 
 	ctlr->dev.of_node = pdev->dev.of_node;
 	ctlr->bus_num = pdev->id;

drivers/spi/spi-sprd.c

@@ -843,10 +843,8 @@ static int sprd_spi_irq_init(struct platform_device *pdev, struct sprd_spi *ss)
 	int ret;
 
 	ss->irq = platform_get_irq(pdev, 0);
-	if (ss->irq < 0) {
-		dev_err(&pdev->dev, "failed to get irq resource\n");
+	if (ss->irq < 0)
 		return ss->irq;
-	}
 
 	ret = devm_request_irq(&pdev->dev, ss->irq, sprd_spi_handle_irq,
 				0, pdev->name, ss);

drivers/spi/spi-st-ssc4.c

@@ -298,7 +298,6 @@ static int spi_st_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
 	struct spi_master *master;
-	struct resource *res;
 	struct spi_st *spi_st;
 	int irq, ret = 0;
 	u32 var;
@@ -331,8 +330,7 @@ static int spi_st_probe(struct platform_device *pdev)
 	init_completion(&spi_st->done);
 
 	/* Get resources */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	spi_st->base = devm_ioremap_resource(&pdev->dev, res);
+	spi_st->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(spi_st->base)) {
 		ret = PTR_ERR(spi_st->base);
 		goto clk_disable;

drivers/spi/spi-stm32-qspi.c

@@ -570,11 +570,8 @@ static int stm32_qspi_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		if (irq != -EPROBE_DEFER)
-			dev_err(dev, "IRQ error missing or invalid\n");
+	if (irq < 0)
 		return irq;
-	}
 
 	ret = devm_request_irq(dev, irq, stm32_qspi_irq, 0,
 			       dev_name(dev), qspi);

drivers/spi/spi-sun4i.c

@@ -428,7 +428,6 @@ static int sun4i_spi_probe(struct platform_device *pdev)
 {
 	struct spi_master *master;
 	struct sun4i_spi *sspi;
-	struct resource	*res;
 	int ret = 0, irq;
 
 	master = spi_alloc_master(&pdev->dev, sizeof(struct sun4i_spi));
@@ -440,8 +439,7 @@ static int sun4i_spi_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, master);
 	sspi = spi_master_get_devdata(master);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	sspi->base_addr = devm_ioremap_resource(&pdev->dev, res);
+	sspi->base_addr = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(sspi->base_addr)) {
 		ret = PTR_ERR(sspi->base_addr);
 		goto err_free_master;
@@ -449,7 +447,6 @@ static int sun4i_spi_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(&pdev->dev, "No spi IRQ specified\n");
 		ret = -ENXIO;
 		goto err_free_master;
 	}

drivers/spi/spi-sun6i.c

@@ -435,7 +435,6 @@ static int sun6i_spi_probe(struct platform_device *pdev)
 {
 	struct spi_master *master;
 	struct sun6i_spi *sspi;
-	struct resource	*res;
 	int ret = 0, irq;
 
 	master = spi_alloc_master(&pdev->dev, sizeof(struct sun6i_spi));
@@ -447,8 +446,7 @@ static int sun6i_spi_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, master);
 	sspi = spi_master_get_devdata(master);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	sspi->base_addr = devm_ioremap_resource(&pdev->dev, res);
+	sspi->base_addr = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(sspi->base_addr)) {
 		ret = PTR_ERR(sspi->base_addr);
 		goto err_free_master;
@@ -456,7 +454,6 @@ static int sun6i_spi_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(&pdev->dev, "No spi IRQ specified\n");
 		ret = -ENXIO;
 		goto err_free_master;
 	}

drivers/spi/spi-synquacer.c

@@ -670,7 +670,6 @@ static int synquacer_spi_probe(struct platform_device *pdev)
 
 	rx_irq = platform_get_irq(pdev, 0);
 	if (rx_irq <= 0) {
-		dev_err(&pdev->dev, "get rx_irq failed (%d)\n", rx_irq);
 		ret = rx_irq;
 		goto put_spi;
 	}
@@ -685,7 +684,6 @@ static int synquacer_spi_probe(struct platform_device *pdev)
 
 	tx_irq = platform_get_irq(pdev, 1);
 	if (tx_irq <= 0) {
-		dev_err(&pdev->dev, "get tx_irq failed (%d)\n", tx_irq);
 		ret = tx_irq;
 		goto put_spi;
 	}

drivers/spi/spi-tegra20-sflash.c

@@ -419,7 +419,6 @@ static int tegra_sflash_probe(struct platform_device *pdev)
 {
 	struct spi_master	*master;
 	struct tegra_sflash_data	*tsd;
-	struct resource		*r;
 	int ret;
 	const struct of_device_id *match;
 
@@ -451,8 +450,7 @@ static int tegra_sflash_probe(struct platform_device *pdev)
 				 &master->max_speed_hz))
 		master->max_speed_hz = 25000000; /* 25MHz */
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	tsd->base = devm_ioremap_resource(&pdev->dev, r);
+	tsd->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(tsd->base)) {
 		ret = PTR_ERR(tsd->base);
 		goto exit_free_master;

drivers/spi/spi-ti-qspi.c

@@ -717,7 +717,6 @@ static int ti_qspi_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(&pdev->dev, "no irq resource?\n");
 		ret = irq;
 		goto free_master;
 	}

drivers/spi/spi-uniphier.c

@@ -7,6 +7,7 @@
 #include <linux/bitfield.h>
 #include <linux/bitops.h>
 #include <linux/clk.h>
+#include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/module.h>
@@ -16,6 +17,7 @@
 #include <asm/unaligned.h>
 
 #define SSI_TIMEOUT_MS		2000
+#define SSI_POLL_TIMEOUT_US	200
 #define SSI_MAX_CLK_DIVIDER	254
 #define SSI_MIN_CLK_DIVIDER	4
 
@@ -214,6 +216,7 @@ static void uniphier_spi_setup_transfer(struct spi_device *spi,
 	if (!priv->is_save_param || priv->mode != spi->mode) {
 		uniphier_spi_set_mode(spi);
 		priv->mode = spi->mode;
+		priv->is_save_param = false;
 	}
 
 	if (!priv->is_save_param || priv->bits_per_word != t->bits_per_word) {
@@ -226,8 +229,7 @@ static void uniphier_spi_setup_transfer(struct spi_device *spi,
 		priv->speed_hz = t->speed_hz;
 	}
 
-	if (!priv->is_save_param)
-		priv->is_save_param = true;
+	priv->is_save_param = true;
 
 	/* reset FIFOs */
 	val = SSI_FC_TXFFL | SSI_FC_RXFFL;
@@ -290,21 +292,23 @@ static void uniphier_spi_recv(struct uniphier_spi_priv *priv)
 
 static void uniphier_spi_fill_tx_fifo(struct uniphier_spi_priv *priv)
 {
-	unsigned int tx_count;
+	unsigned int fifo_threshold, fill_bytes;
 	u32 val;
 
-	tx_count = DIV_ROUND_UP(priv->tx_bytes,
+	fifo_threshold = DIV_ROUND_UP(priv->rx_bytes,
 				bytes_per_word(priv->bits_per_word));
-	tx_count = min(tx_count, SSI_FIFO_DEPTH);
+	fifo_threshold = min(fifo_threshold, SSI_FIFO_DEPTH);
+
+	fill_bytes = fifo_threshold - (priv->rx_bytes - priv->tx_bytes);
 
 	/* set fifo threshold */
 	val = readl(priv->base + SSI_FC);
 	val &= ~(SSI_FC_TXFTH_MASK | SSI_FC_RXFTH_MASK);
-	val |= FIELD_PREP(SSI_FC_TXFTH_MASK, tx_count);
-	val |= FIELD_PREP(SSI_FC_RXFTH_MASK, tx_count);
+	val |= FIELD_PREP(SSI_FC_TXFTH_MASK, fifo_threshold);
+	val |= FIELD_PREP(SSI_FC_RXFTH_MASK, fifo_threshold);
 	writel(val, priv->base + SSI_FC);
 
-	while (tx_count--)
+	while (fill_bytes--)
 		uniphier_spi_send(priv);
 }
 
@@ -323,20 +327,14 @@ static void uniphier_spi_set_cs(struct spi_device *spi, bool enable)
 	writel(val, priv->base + SSI_FPS);
 }
 
-static int uniphier_spi_transfer_one(struct spi_master *master,
-				     struct spi_device *spi,
-				     struct spi_transfer *t)
+static int uniphier_spi_transfer_one_irq(struct spi_master *master,
+					 struct spi_device *spi,
+					 struct spi_transfer *t)
 {
 	struct uniphier_spi_priv *priv = spi_master_get_devdata(master);
 	struct device *dev = master->dev.parent;
 	unsigned long time_left;
 
-	/* Terminate and return success for 0 byte length transfer */
-	if (!t->len)
-		return 0;
-
-	uniphier_spi_setup_transfer(spi, t);
-
 	reinit_completion(&priv->xfer_done);
 
 	uniphier_spi_fill_tx_fifo(priv);
@@ -356,6 +354,59 @@ static int uniphier_spi_transfer_one(struct spi_master *master,
 	return priv->error;
 }
 
+static int uniphier_spi_transfer_one_poll(struct spi_master *master,
+					  struct spi_device *spi,
+					  struct spi_transfer *t)
+{
+	struct uniphier_spi_priv *priv = spi_master_get_devdata(master);
+	int loop = SSI_POLL_TIMEOUT_US * 10;
+
+	while (priv->tx_bytes) {
+		uniphier_spi_fill_tx_fifo(priv);
+
+		while ((priv->rx_bytes - priv->tx_bytes) > 0) {
+			while (!(readl(priv->base + SSI_SR) & SSI_SR_RNE)
+								&& loop--)
+				ndelay(100);
+
+			if (loop == -1)
+				goto irq_transfer;
+
+			uniphier_spi_recv(priv);
+		}
+	}
+
+	return 0;
+
+irq_transfer:
+	return uniphier_spi_transfer_one_irq(master, spi, t);
+}
+
+static int uniphier_spi_transfer_one(struct spi_master *master,
+				     struct spi_device *spi,
+				     struct spi_transfer *t)
+{
+	struct uniphier_spi_priv *priv = spi_master_get_devdata(master);
+	unsigned long threshold;
+
+	/* Terminate and return success for 0 byte length transfer */
+	if (!t->len)
+		return 0;
+
+	uniphier_spi_setup_transfer(spi, t);
+
+	/*
+	 * If the transfer operation will take longer than
+	 * SSI_POLL_TIMEOUT_US, it should use irq.
+	 */
+	threshold = DIV_ROUND_UP(SSI_POLL_TIMEOUT_US * priv->speed_hz,
+					USEC_PER_SEC * BITS_PER_BYTE);
+	if (t->len > threshold)
+		return uniphier_spi_transfer_one_irq(master, spi, t);
+	else
+		return uniphier_spi_transfer_one_poll(master, spi, t);
+}
+
 static int uniphier_spi_prepare_transfer_hardware(struct spi_master *master)
 {
 	struct uniphier_spi_priv *priv = spi_master_get_devdata(master);
@@ -419,7 +470,6 @@ static int uniphier_spi_probe(struct platform_device *pdev)
 {
 	struct uniphier_spi_priv *priv;
 	struct spi_master *master;
-	struct resource *res;
 	unsigned long clk_rate;
 	int irq;
 	int ret;
@@ -434,8 +484,7 @@ static int uniphier_spi_probe(struct platform_device *pdev)
 	priv->master = master;
 	priv->is_save_param = false;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->base = devm_ioremap_resource(&pdev->dev, res);
+	priv->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->base)) {
 		ret = PTR_ERR(priv->base);
 		goto out_master_put;
@@ -454,7 +503,6 @@ static int uniphier_spi_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(&pdev->dev, "failed to get IRQ\n");
 		ret = irq;
 		goto out_disable_clk;
 	}

drivers/spi/spi-xlp.c

@@ -370,7 +370,6 @@ static int xlp_spi_probe(struct platform_device *pdev)
 {
 	struct spi_master *master;
 	struct xlp_spi_priv *xspi;
-	struct resource *res;
 	struct clk *clk;
 	int irq, err;
 
@@ -378,16 +377,13 @@ static int xlp_spi_probe(struct platform_device *pdev)
 	if (!xspi)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	xspi->base = devm_ioremap_resource(&pdev->dev, res);
+	xspi->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(xspi->base))
 		return PTR_ERR(xspi->base);
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "no IRQ resource found: %d\n", irq);
+	if (irq < 0)
 		return irq;
-	}
 	err = devm_request_irq(&pdev->dev, irq, xlp_spi_interrupt, 0,
 			pdev->name, xspi);
 	if (err) {

drivers/spi/spi-zynq-qspi.c

@@ -620,7 +620,6 @@ static int zynq_qspi_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
 	struct zynq_qspi *xqspi;
-	struct resource *res;
 	u32 num_cs;
 
 	ctlr = spi_alloc_master(&pdev->dev, sizeof(*xqspi));
@@ -630,8 +629,7 @@ static int zynq_qspi_probe(struct platform_device *pdev)
 	xqspi = spi_controller_get_devdata(ctlr);
 	xqspi->dev = dev;
 	platform_set_drvdata(pdev, xqspi);
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	xqspi->regs = devm_ioremap_resource(&pdev->dev, res);
+	xqspi->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(xqspi->regs)) {
 		ret = PTR_ERR(xqspi->regs);
 		goto remove_master;
@@ -671,7 +669,6 @@ static int zynq_qspi_probe(struct platform_device *pdev)
 	xqspi->irq = platform_get_irq(pdev, 0);
 	if (xqspi->irq <= 0) {
 		ret = -ENXIO;
-		dev_err(&pdev->dev, "irq resource not found\n");
 		goto remove_master;
 	}
 	ret = devm_request_irq(&pdev->dev, xqspi->irq, zynq_qspi_irq,
@@ -695,7 +692,7 @@ static int zynq_qspi_probe(struct platform_device *pdev)
 	ctlr->setup = zynq_qspi_setup_op;
 	ctlr->max_speed_hz = clk_get_rate(xqspi->refclk) / 2;
 	ctlr->dev.of_node = np;
-	ret = spi_register_controller(ctlr);
+	ret = devm_spi_register_controller(&pdev->dev, ctlr);
 	if (ret) {
 		dev_err(&pdev->dev, "spi_register_master failed\n");
 		goto clk_dis_all;

drivers/spi/spi-zynqmp-gqspi.c

@@ -1016,7 +1016,6 @@ static int zynqmp_qspi_probe(struct platform_device *pdev)
 	int ret = 0;
 	struct spi_master *master;
 	struct zynqmp_qspi *xqspi;
-	struct resource *res;
 	struct device *dev = &pdev->dev;
 
 	eemi_ops = zynqmp_pm_get_eemi_ops();
@@ -1031,8 +1030,7 @@ static int zynqmp_qspi_probe(struct platform_device *pdev)
 	master->dev.of_node = pdev->dev.of_node;
 	platform_set_drvdata(pdev, master);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	xqspi->regs = devm_ioremap_resource(&pdev->dev, res);
+	xqspi->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(xqspi->regs)) {
 		ret = PTR_ERR(xqspi->regs);
 		goto remove_master;
@@ -1077,7 +1075,6 @@ static int zynqmp_qspi_probe(struct platform_device *pdev)
 	xqspi->irq = platform_get_irq(pdev, 0);
 	if (xqspi->irq <= 0) {
 		ret = -ENXIO;
-		dev_err(dev, "irq resource not found\n");
 		goto clk_dis_all;
 	}
 	ret = devm_request_irq(&pdev->dev, xqspi->irq, zynqmp_qspi_irq,

drivers/spi/spi.c

@@ -1265,8 +1265,9 @@ EXPORT_SYMBOL_GPL(spi_finalize_current_transfer);
  */
 static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread)
 {
-	unsigned long flags;
+	struct spi_message *msg;
 	bool was_busy = false;
+	unsigned long flags;
 	int ret;
 
 	/* Lock queue */
@@ -1325,10 +1326,10 @@ static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread)
 	}
 
 	/* Extract head of queue */
-	ctlr->cur_msg =
-		list_first_entry(&ctlr->queue, struct spi_message, queue);
+	msg = list_first_entry(&ctlr->queue, struct spi_message, queue);
+	ctlr->cur_msg = msg;
 
-	list_del_init(&ctlr->cur_msg->queue);
+	list_del_init(&msg->queue);
 	if (ctlr->busy)
 		was_busy = true;
 	else
@@ -1361,7 +1362,7 @@ static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread)
 			if (ctlr->auto_runtime_pm)
 				pm_runtime_put(ctlr->dev.parent);
 
-			ctlr->cur_msg->status = ret;
+			msg->status = ret;
 			spi_finalize_current_message(ctlr);
 
 			mutex_unlock(&ctlr->io_mutex);
@@ -1369,28 +1370,28 @@ static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread)
 		}
 	}
 
-	trace_spi_message_start(ctlr->cur_msg);
+	trace_spi_message_start(msg);
 
 	if (ctlr->prepare_message) {
-		ret = ctlr->prepare_message(ctlr, ctlr->cur_msg);
+		ret = ctlr->prepare_message(ctlr, msg);
 		if (ret) {
 			dev_err(&ctlr->dev, "failed to prepare message: %d\n",
 				ret);
-			ctlr->cur_msg->status = ret;
+			msg->status = ret;
 			spi_finalize_current_message(ctlr);
 			goto out;
 		}
 		ctlr->cur_msg_prepared = true;
 	}
 
-	ret = spi_map_msg(ctlr, ctlr->cur_msg);
+	ret = spi_map_msg(ctlr, msg);
 	if (ret) {
-		ctlr->cur_msg->status = ret;
+		msg->status = ret;
 		spi_finalize_current_message(ctlr);
 		goto out;
 	}
 
-	ret = ctlr->transfer_one_message(ctlr, ctlr->cur_msg);
+	ret = ctlr->transfer_one_message(ctlr, msg);
 	if (ret) {
 		dev_err(&ctlr->dev,
 			"failed to transfer one message from queue\n");
@@ -1434,7 +1435,7 @@ static void spi_pump_messages(struct kthread_work *work)
  */
 static void spi_set_thread_rt(struct spi_controller *ctlr)
 {
-	struct sched_param param = { .sched_priority = MAX_RT_PRIO - 1 };
+	struct sched_param param = { .sched_priority = MAX_RT_PRIO / 2 };
 
 	dev_info(&ctlr->dev,
 		"will run message pump with realtime priority\n");
@@ -2105,8 +2106,8 @@ static int match_true(struct device *dev, void *data)
 	return 1;
 }
 
-static ssize_t spi_slave_show(struct device *dev,
-			      struct device_attribute *attr, char *buf)
+static ssize_t slave_show(struct device *dev, struct device_attribute *attr,
+			  char *buf)
 {
 	struct spi_controller *ctlr = container_of(dev, struct spi_controller,
 						   dev);
@@ -2117,9 +2118,8 @@ static ssize_t spi_slave_show(struct device *dev,
 		       child ? to_spi_device(child)->modalias : NULL);
 }
 
-static ssize_t spi_slave_store(struct device *dev,
-			       struct device_attribute *attr, const char *buf,
-			       size_t count)
+static ssize_t slave_store(struct device *dev, struct device_attribute *attr,
+			   const char *buf, size_t count)
 {
 	struct spi_controller *ctlr = container_of(dev, struct spi_controller,
 						   dev);
@@ -2157,7 +2157,7 @@ static ssize_t spi_slave_store(struct device *dev,
 	return count;
 }
 
-static DEVICE_ATTR(slave, 0644, spi_slave_show, spi_slave_store);
+static DEVICE_ATTR_RW(slave);
 
 static struct attribute *spi_slave_attrs[] = {
 	&dev_attr_slave.attr,
@@ -2188,8 +2188,10 @@ extern struct class spi_slave_class;	/* dummy */
  * __spi_alloc_controller - allocate an SPI master or slave controller
  * @dev: the controller, possibly using the platform_bus
  * @size: how much zeroed driver-private data to allocate; the pointer to this
- *	memory is in the driver_data field of the returned device,
- *	accessible with spi_controller_get_devdata().
+ *	memory is in the driver_data field of the returned device, accessible
+ *	with spi_controller_get_devdata(); the memory is cacheline aligned;
+ *	drivers granting DMA access to portions of their private data need to
+ *	round up @size using ALIGN(size, dma_get_cache_alignment()).
  * @slave: flag indicating whether to allocate an SPI master (false) or SPI
  *	slave (true) controller
  * Context: can sleep
@@ -2211,11 +2213,12 @@ struct spi_controller *__spi_alloc_controller(struct device *dev,
 					      unsigned int size, bool slave)
 {
 	struct spi_controller	*ctlr;
+	size_t ctlr_size = ALIGN(sizeof(*ctlr), dma_get_cache_alignment());
 
 	if (!dev)
 		return NULL;
 
-	ctlr = kzalloc(size + sizeof(*ctlr), GFP_KERNEL);
+	ctlr = kzalloc(size + ctlr_size, GFP_KERNEL);
 	if (!ctlr)
 		return NULL;
 
@@ -2229,14 +2232,14 @@ struct spi_controller *__spi_alloc_controller(struct device *dev,
 		ctlr->dev.class = &spi_master_class;
 	ctlr->dev.parent = dev;
 	pm_suspend_ignore_children(&ctlr->dev, true);
-	spi_controller_set_devdata(ctlr, &ctlr[1]);
+	spi_controller_set_devdata(ctlr, (void *)ctlr + ctlr_size);
 
 	return ctlr;
 }
 EXPORT_SYMBOL_GPL(__spi_alloc_controller);
 
 #ifdef CONFIG_OF
-static int of_spi_register_master(struct spi_controller *ctlr)
+static int of_spi_get_gpio_numbers(struct spi_controller *ctlr)
 {
 	int nb, i, *cs;
 	struct device_node *np = ctlr->dev.of_node;
@@ -2269,7 +2272,7 @@ static int of_spi_register_master(struct spi_controller *ctlr)
 	return 0;
 }
 #else
-static int of_spi_register_master(struct spi_controller *ctlr)
+static int of_spi_get_gpio_numbers(struct spi_controller *ctlr)
 {
 	return 0;
 }
@@ -2456,7 +2459,7 @@ int spi_register_controller(struct spi_controller *ctlr)
 			ctlr->mode_bits |= SPI_CS_HIGH;
 		} else {
 			/* Legacy code path for GPIOs from DT */
-			status = of_spi_register_master(ctlr);
+			status = of_spi_get_gpio_numbers(ctlr);
 			if (status)
 				return status;
 		}