Merge remote-tracking branch 'spi/for-5.12' into spi-next

Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml

@@ -25,6 +25,7 @@ properties:
           - enum:
               - allwinner,sun8i-r40-spi
               - allwinner,sun50i-h6-spi
+              - allwinner,sun50i-h616-spi
           - const: allwinner,sun8i-h3-spi
 
   reg:

Documentation/devicetree/bindings/mtd/cadence-quadspi.txt → Documentation/devicetree/bindings/spi/cadence-quadspi.txt

@@ -5,6 +5,7 @@ Required properties:
 	Generic default - "cdns,qspi-nor".
 	For TI 66AK2G SoC - "ti,k2g-qspi", "cdns,qspi-nor".
 	For TI AM654 SoC  - "ti,am654-ospi", "cdns,qspi-nor".
+	For Intel LGM SoC - "intel,lgm-qspi", "cdns,qspi-nor".
 - reg : Contains two entries, each of which is a tuple consisting of a
 	physical address and length. The first entry is the address and
 	length of the controller register set. The second entry is the

Documentation/devicetree/bindings/spi/nvidia,tegra210-quad.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/nvidia,tegra210-quad.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Tegra Quad SPI Controller
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jonathan Hunter <jonathanh@nvidia.com>
+
+allOf:
+  - $ref: "spi-controller.yaml#"
+
+properties:
+  compatible:
+    enum:
+      - nvidia,tegra210-qspi
+      - nvidia,tegra186-qspi
+      - nvidia,tegra194-qspi
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: qspi
+      - const: qspi_out
+
+  clocks:
+    maxItems: 2
+
+  resets:
+    maxItems: 1
+
+  dmas:
+    maxItems: 2
+
+  dma-names:
+    items:
+      - const: rx
+      - const: tx
+
+patternProperties:
+  "@[0-9a-f]+":
+    type: object
+
+    properties:
+      spi-rx-bus-width:
+        enum: [1, 2, 4]
+
+      spi-tx-bus-width:
+        enum: [1, 2, 4]
+
+      nvidia,tx-clk-tap-delay:
+        description:
+          Delays the clock going out to device with this tap value.
+          Tap value varies based on platform design trace lengths from Tegra
+          QSPI to corresponding slave device.
+        $ref: /schemas/types.yaml#/definitions/uint32
+        minimum: 0
+        maximum: 31
+
+      nvidia,rx-clk-tap-delay:
+        description:
+          Delays the clock coming in from the device with this tap value.
+          Tap value varies based on platform design trace lengths from Tegra
+          QSPI to corresponding slave device.
+        $ref: /schemas/types.yaml#/definitions/uint32
+        minimum: 0
+        maximum: 255
+
+    required:
+      - reg
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clock-names
+  - clocks
+  - resets
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra210-car.h>
+    #include <dt-bindings/reset/tegra210-car.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    spi@70410000 {
+            compatible = "nvidia,tegra210-qspi";
+            reg = <0x70410000 0x1000>;
+            interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+            clocks = <&tegra_car TEGRA210_CLK_QSPI>,
+                     <&tegra_car TEGRA210_CLK_QSPI_PM>;
+            clock-names = "qspi", "qspi_out";
+            resets = <&tegra_car 211>;
+            dmas = <&apbdma 5>, <&apbdma 5>;
+            dma-names = "rx", "tx";
+
+            flash@0 {
+                    compatible = "spi-nor";
+                    reg = <0>;
+                    spi-max-frequency = <104000000>;
+                    spi-tx-bus-width = <2>;
+                    spi-rx-bus-width = <2>;
+                    nvidia,tx-clk-tap-delay = <0>;
+                    nvidia,rx-clk-tap-delay = <0>;
+            };
+    };

Documentation/devicetree/bindings/spi/realtek,rtl-spi.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/realtek,rtl-spi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Realtek RTL838x/RTL839x SPI controller
+
+maintainers:
+  - Bert Vermeulen <bert@biot.com>
+  - Birger Koblitz <mail@birger-koblitz.de>
+
+allOf:
+  - $ref: "spi-controller.yaml#"
+
+properties:
+  compatible:
+    oneOf:
+      - const: realtek,rtl8380-spi
+      - const: realtek,rtl8382-spi
+      - const: realtek,rtl8391-spi
+      - const: realtek,rtl8392-spi
+      - const: realtek,rtl8393-spi
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    spi: spi@1200 {
+        compatible = "realtek,rtl8382-spi";
+        reg = <0x1200 0x100>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+    };

Documentation/devicetree/bindings/spi/renesas,sh-msiof.yaml

@@ -47,6 +47,7 @@ properties:
               - renesas,msiof-r8a77980      # R-Car V3H
               - renesas,msiof-r8a77990      # R-Car E3
               - renesas,msiof-r8a77995      # R-Car D3
+              - renesas,msiof-r8a779a0      # R-Car V3U
           - const: renesas,rcar-gen3-msiof  # generic R-Car Gen3 and RZ/G2
                                             # compatible device
       - items:

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

@@ -152,8 +152,9 @@ patternProperties:
       spi-rx-bus-width:
         description:
           Bus width to the SPI bus used for read transfers.
+          If 0 is provided, then no RX will be possible on this device.
         $ref: /schemas/types.yaml#/definitions/uint32
-        enum: [1, 2, 4, 8]
+        enum: [0, 1, 2, 4, 8]
         default: 1
 
       spi-rx-delay-us:
@@ -163,8 +164,9 @@ patternProperties:
       spi-tx-bus-width:
         description:
           Bus width to the SPI bus used for write transfers.
+          If 0 is provided, then no TX will be possible on this device.
         $ref: /schemas/types.yaml#/definitions/uint32
-        enum: [1, 2, 4, 8]
+        enum: [0, 1, 2, 4, 8]
         default: 1
 
       spi-tx-delay-us:

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

-* CSR SiRFprimaII Serial Peripheral Interface
-
-Required properties:
-- compatible : Should be "sirf,prima2-spi", "sirf,prima2-usp"
-               or "sirf,atlas7-usp"
-- reg : Offset and length of the register set for the device
-- interrupts : Should contain SPI interrupt
-- resets: phandle to the reset controller asserting this device in
-          reset
-  See ../reset/reset.txt for details.
-- dmas : Must contain an entry for each entry in clock-names.
-  See ../dma/dma.txt for details.
-- dma-names : Must include the following entries:
-  - rx
-  - tx
-- clocks : Must contain an entry for each entry in clock-names.
-  See ../clocks/clock-bindings.txt for details.
-
-- #address-cells: Number of cells required to define a chip select
-                  address on the SPI bus. Should be set to 1.
-- #size-cells:    Should be zero.
-
-Optional properties:
-- spi-max-frequency: Specifies maximum SPI clock frequency,
-                     Units - Hz. Definition as per
-                     Documentation/devicetree/bindings/spi/spi-bus.txt
-- cs-gpios:     should specify GPIOs used for chipselects.
-
-Example:
-
-spi0: spi@b00d0000 {
-	compatible = "sirf,prima2-spi";
-	reg = <0xb00d0000 0x10000>;
-	interrupts = <15>;
-	dmas = <&dmac1 9>,
-		<&dmac1 4>;
-	dma-names = "rx", "tx";
-	#address-cells = <1>;
-	#size-cells = <0>;
-	clocks = <&clks 19>;
-	resets = <&rstc 26>;
-};

MAINTAINERS

@@ -17502,6 +17502,14 @@ M:	Laxman Dewangan <ldewangan@nvidia.com>
 S:	Supported
 F:	drivers/spi/spi-tegra*
 
+TEGRA QUAD SPI DRIVER
+M:	Thierry Reding <thierry.reding@gmail.com>
+M:	Jonathan Hunter <jonathanh@nvidia.com>
+M:	Sowjanya Komatineni <skomatineni@nvidia.com>
+L:	linux-tegra@vger.kernel.org
+S:	Maintained
+F:	drivers/spi/spi-tegra210-quad.c
+
 TEGRA VIDEO DRIVER
 M:	Thierry Reding <thierry.reding@gmail.com>
 M:	Jonathan Hunter <jonathanh@nvidia.com>

drivers/spi/Kconfig

@@ -203,7 +203,7 @@ config SPI_CADENCE
 
 config SPI_CADENCE_QUADSPI
 	tristate "Cadence Quad SPI controller"
-	depends on OF && (ARM || ARM64 || COMPILE_TEST)
+	depends on OF && (ARM || ARM64 || X86 || COMPILE_TEST)
 	help
 	  Enable support for the Cadence Quad SPI Flash controller.
 
@@ -292,13 +292,6 @@ config SPI_DLN2
 	 This driver can also be built as a module.  If so, the module
 	 will be called spi-dln2.
 
-config SPI_EFM32
-	tristate "EFM32 SPI controller"
-	depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
-	select SPI_BITBANG
-	help
-	  Driver for the spi controller found on Energy Micro's EFM32 SoCs.
-
 config SPI_EP93XX
 	tristate "Cirrus Logic EP93xx SPI controller"
 	depends on ARCH_EP93XX || COMPILE_TEST
@@ -650,7 +643,7 @@ config SPI_RPCIF
 	tristate "Renesas RPC-IF SPI driver"
 	depends on RENESAS_RPCIF
 	help
-	  SPI driver for Renesas R-Car Gen3 RPC-IF.
+	  SPI driver for Renesas R-Car Gen3 or RZ/G2 RPC-IF.
 
 config SPI_RSPI
 	tristate "Renesas RSPI/QSPI controller"
@@ -751,13 +744,6 @@ config SPI_SIFIVE
 	help
 	  This exposes the SPI controller IP from SiFive.
 
-config SPI_SIRF
-	tristate "CSR SiRFprimaII SPI controller"
-	depends on SIRF_DMA
-	select SPI_BITBANG
-	help
-	  SPI driver for CSR SiRFprimaII SoCs
-
 config SPI_SLAVE_MT27XX
 	tristate "MediaTek SPI slave device"
 	depends on ARCH_MEDIATEK || COMPILE_TEST
@@ -843,6 +829,15 @@ config SPI_MXS
 	help
 	  SPI driver for Freescale MXS devices.
 
+config SPI_TEGRA210_QUAD
+	tristate "NVIDIA Tegra QSPI Controller"
+	depends on ARCH_TEGRA || COMPILE_TEST
+	depends on RESET_CONTROLLER
+	help
+	  QSPI driver for NVIDIA Tegra QSPI Controller interface. This
+	  controller is different from the SPI controller and is available
+	  on Tegra SoCs starting from Tegra210.
+
 config SPI_TEGRA114
 	tristate "NVIDIA Tegra114 SPI Controller"
 	depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
@@ -885,12 +880,6 @@ config SPI_TOPCLIFF_PCH
 	  This driver also supports the ML7213/ML7223/ML7831, a companion chip
 	  for the Atom E6xx series and compatible with the Intel EG20T PCH.
 
-config SPI_TXX9
-	tristate "Toshiba TXx9 SPI controller"
-	depends on GPIOLIB && (CPU_TX49XX || COMPILE_TEST)
-	help
-	  SPI driver for Toshiba TXx9 MIPS SoCs
-
 config SPI_UNIPHIER
 	tristate "Socionext UniPhier SPI Controller"
 	depends on (ARCH_UNIPHIER || COMPILE_TEST) && OF

drivers/spi/Makefile

@@ -42,7 +42,6 @@ spi-dw-$(CONFIG_SPI_DW_DMA)		+= spi-dw-dma.o
 obj-$(CONFIG_SPI_DW_BT1)		+= spi-dw-bt1.o
 obj-$(CONFIG_SPI_DW_MMIO)		+= spi-dw-mmio.o
 obj-$(CONFIG_SPI_DW_PCI)		+= spi-dw-pci.o
-obj-$(CONFIG_SPI_EFM32)			+= spi-efm32.o
 obj-$(CONFIG_SPI_EP93XX)		+= spi-ep93xx.o
 obj-$(CONFIG_SPI_FALCON)		+= spi-falcon.o
 obj-$(CONFIG_SPI_FSI)			+= spi-fsi.o
@@ -94,6 +93,7 @@ obj-$(CONFIG_SPI_QCOM_QSPI)		+= spi-qcom-qspi.o
 obj-$(CONFIG_SPI_QUP)			+= spi-qup.o
 obj-$(CONFIG_SPI_ROCKCHIP)		+= spi-rockchip.o
 obj-$(CONFIG_SPI_RB4XX)			+= spi-rb4xx.o
+obj-$(CONFIG_MACH_REALTEK_RTL)		+= spi-realtek-rtl.o
 obj-$(CONFIG_SPI_RPCIF)			+= spi-rpc-if.o
 obj-$(CONFIG_SPI_RSPI)			+= spi-rspi.o
 obj-$(CONFIG_SPI_S3C24XX)		+= spi-s3c24xx-hw.o
@@ -105,7 +105,6 @@ obj-$(CONFIG_SPI_SH_HSPI)		+= spi-sh-hspi.o
 obj-$(CONFIG_SPI_SH_MSIOF)		+= spi-sh-msiof.o
 obj-$(CONFIG_SPI_SH_SCI)		+= spi-sh-sci.o
 obj-$(CONFIG_SPI_SIFIVE)		+= spi-sifive.o
-obj-$(CONFIG_SPI_SIRF)		+= spi-sirf.o
 obj-$(CONFIG_SPI_SLAVE_MT27XX)          += spi-slave-mt27xx.o
 obj-$(CONFIG_SPI_SPRD)			+= spi-sprd.o
 obj-$(CONFIG_SPI_SPRD_ADI)		+= spi-sprd-adi.o
@@ -115,6 +114,7 @@ obj-$(CONFIG_SPI_ST_SSC4)		+= spi-st-ssc4.o
 obj-$(CONFIG_SPI_SUN4I)			+= spi-sun4i.o
 obj-$(CONFIG_SPI_SUN6I)			+= spi-sun6i.o
 obj-$(CONFIG_SPI_SYNQUACER)		+= spi-synquacer.o
+obj-$(CONFIG_SPI_TEGRA210_QUAD)		+= spi-tegra210-quad.o
 obj-$(CONFIG_SPI_TEGRA114)		+= spi-tegra114.o
 obj-$(CONFIG_SPI_TEGRA20_SFLASH)	+= spi-tegra20-sflash.o
 obj-$(CONFIG_SPI_TEGRA20_SLINK)		+= spi-tegra20-slink.o
@@ -122,7 +122,6 @@ obj-$(CONFIG_SPI_TLE62X0)		+= spi-tle62x0.o
 spi-thunderx-objs			:= spi-cavium.o spi-cavium-thunderx.o
 obj-$(CONFIG_SPI_THUNDERX)		+= spi-thunderx.o
 obj-$(CONFIG_SPI_TOPCLIFF_PCH)		+= spi-topcliff-pch.o
-obj-$(CONFIG_SPI_TXX9)			+= spi-txx9.o
 obj-$(CONFIG_SPI_UNIPHIER)		+= spi-uniphier.o
 obj-$(CONFIG_SPI_XCOMM)		+= spi-xcomm.o
 obj-$(CONFIG_SPI_XILINX)		+= spi-xilinx.o

drivers/spi/atmel-quadspi.c

@@ -657,6 +657,7 @@ static int __maybe_unused atmel_qspi_suspend(struct device *dev)
 	struct spi_controller *ctrl = dev_get_drvdata(dev);
 	struct atmel_qspi *aq = spi_controller_get_devdata(ctrl);
 
+	atmel_qspi_write(QSPI_CR_QSPIDIS, aq, QSPI_CR);
 	clk_disable_unprepare(aq->qspick);
 	clk_disable_unprepare(aq->pclk);
 

drivers/spi/spi-atmel.c

@@ -1590,7 +1590,7 @@ static int atmel_spi_probe(struct platform_device *pdev)
 		if (ret == 0) {
 			as->use_dma = true;
 		} else if (ret == -EPROBE_DEFER) {
-			return ret;
+			goto out_unmap_regs;
 		}
 	} else if (as->caps.has_pdc_support) {
 		as->use_pdc = true;

drivers/spi/spi-au1550.c

@@ -26,7 +26,7 @@
 
 #include <asm/mach-au1x00/au1550_spi.h>
 
-static unsigned usedma = 1;
+static unsigned int usedma = 1;
 module_param(usedma, uint, 0644);
 
 /*
@@ -43,9 +43,9 @@ struct au1550_spi {
 	volatile psc_spi_t __iomem *regs;
 	int irq;
 
-	unsigned len;
-	unsigned tx_count;
-	unsigned rx_count;
+	unsigned int len;
+	unsigned int tx_count;
+	unsigned int rx_count;
 	const u8 *tx;
 	u8 *rx;
 
@@ -56,14 +56,14 @@ struct au1550_spi {
 
 	struct completion master_done;
 
-	unsigned usedma;
+	unsigned int usedma;
 	u32 dma_tx_id;
 	u32 dma_rx_id;
 	u32 dma_tx_ch;
 	u32 dma_rx_ch;
 
 	u8 *dma_rx_tmpbuf;
-	unsigned dma_rx_tmpbuf_size;
+	unsigned int dma_rx_tmpbuf_size;
 	u32 dma_rx_tmpbuf_addr;
 
 	struct spi_master *master;
@@ -74,8 +74,7 @@ struct au1550_spi {
 
 
 /* we use an 8-bit memory device for dma transfers to/from spi fifo */
-static dbdev_tab_t au1550_spi_mem_dbdev =
-{
+static dbdev_tab_t au1550_spi_mem_dbdev = {
 	.dev_id			= DBDMA_MEM_CHAN,
 	.dev_flags		= DEV_FLAGS_ANYUSE|DEV_FLAGS_SYNC,
 	.dev_tsize		= 0,
@@ -99,7 +98,7 @@ static void au1550_spi_bits_handlers_set(struct au1550_spi *hw, int bpw);
  *    BRG valid range is 4..63
  *    DIV valid range is 0..3
  */
-static u32 au1550_spi_baudcfg(struct au1550_spi *hw, unsigned speed_hz)
+static u32 au1550_spi_baudcfg(struct au1550_spi *hw, unsigned int speed_hz)
 {
 	u32 mainclk_hz = hw->pdata->mainclk_hz;
 	u32 div, brg;
@@ -161,7 +160,7 @@ static void au1550_spi_reset_fifos(struct au1550_spi *hw)
 static void au1550_spi_chipsel(struct spi_device *spi, int value)
 {
 	struct au1550_spi *hw = spi_master_get_devdata(spi->master);
-	unsigned cspol = spi->mode & SPI_CS_HIGH ? 1 : 0;
+	unsigned int cspol = spi->mode & SPI_CS_HIGH ? 1 : 0;
 	u32 cfg, stat;
 
 	switch (value) {
@@ -221,7 +220,7 @@ static void au1550_spi_chipsel(struct spi_device *spi, int value)
 static int au1550_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t)
 {
 	struct au1550_spi *hw = spi_master_get_devdata(spi->master);
-	unsigned bpw, hz;
+	unsigned int bpw, hz;
 	u32 cfg, stat;
 
 	if (t) {
@@ -276,7 +275,7 @@ static int au1550_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t)
  * spi master done event irq is not generated unless rx fifo is empty (emptied)
  * so we need rx tmp buffer to use for rx dma if user does not provide one
  */
-static int au1550_spi_dma_rxtmp_alloc(struct au1550_spi *hw, unsigned size)
+static int au1550_spi_dma_rxtmp_alloc(struct au1550_spi *hw, unsigned int size)
 {
 	hw->dma_rx_tmpbuf = kmalloc(size, GFP_KERNEL);
 	if (!hw->dma_rx_tmpbuf)
@@ -399,10 +398,10 @@ static int au1550_spi_dma_txrxb(struct spi_device *spi, struct spi_transfer *t)
 			DMA_FROM_DEVICE);
 	}
 	/* unmap buffers if mapped above */
-	if (t->rx_buf && t->rx_dma == 0 )
+	if (t->rx_buf && t->rx_dma == 0)
 		dma_unmap_single(hw->dev, dma_rx_addr, t->len,
 			DMA_FROM_DEVICE);
-	if (t->tx_buf && t->tx_dma == 0 )
+	if (t->tx_buf && t->tx_dma == 0)
 		dma_unmap_single(hw->dev, dma_tx_addr, t->len,
 			DMA_TO_DEVICE);
 
@@ -447,8 +446,8 @@ static irqreturn_t au1550_spi_dma_irq_callback(struct au1550_spi *hw)
 				"dma transfer: receive FIFO overflow!\n");
 		else
 			dev_err(hw->dev,
-				"dma transfer: unexpected SPI error "
-				"(event=0x%x stat=0x%x)!\n", evnt, stat);
+				"dma transfer: unexpected SPI error (event=0x%x stat=0x%x)!\n",
+				evnt, stat);
 
 		complete(&hw->master_done);
 		return IRQ_HANDLED;
@@ -493,12 +492,12 @@ static void au1550_spi_tx_word_##size(struct au1550_spi *hw)		\
 	wmb(); /* drain writebuffer */					\
 }
 
-AU1550_SPI_RX_WORD(8,0xff)
-AU1550_SPI_RX_WORD(16,0xffff)
-AU1550_SPI_RX_WORD(32,0xffffff)
-AU1550_SPI_TX_WORD(8,0xff)
-AU1550_SPI_TX_WORD(16,0xffff)
-AU1550_SPI_TX_WORD(32,0xffffff)
+AU1550_SPI_RX_WORD(8, 0xff)
+AU1550_SPI_RX_WORD(16, 0xffff)
+AU1550_SPI_RX_WORD(32, 0xffffff)
+AU1550_SPI_TX_WORD(8, 0xff)
+AU1550_SPI_TX_WORD(16, 0xffff)
+AU1550_SPI_TX_WORD(32, 0xffffff)
 
 static int au1550_spi_pio_txrxb(struct spi_device *spi, struct spi_transfer *t)
 {
@@ -567,8 +566,8 @@ static irqreturn_t au1550_spi_pio_irq_callback(struct au1550_spi *hw)
 		au1550_spi_mask_ack_all(hw);
 		au1550_spi_reset_fifos(hw);
 		dev_err(hw->dev,
-			"pio transfer: unexpected SPI error "
-			"(event=0x%x stat=0x%x)!\n", evnt, stat);
+			"pio transfer: unexpected SPI error (event=0x%x stat=0x%x)!\n",
+			evnt, stat);
 		complete(&hw->master_done);
 		return IRQ_HANDLED;
 	}
@@ -636,12 +635,14 @@ static irqreturn_t au1550_spi_pio_irq_callback(struct au1550_spi *hw)
 static int au1550_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
 {
 	struct au1550_spi *hw = spi_master_get_devdata(spi->master);
+
 	return hw->txrx_bufs(spi, t);
 }
 
 static irqreturn_t au1550_spi_irq(int irq, void *dev)
 {
 	struct au1550_spi *hw = dev;
+
 	return hw->irq_callback(hw);
 }
 
@@ -872,6 +873,7 @@ static int au1550_spi_probe(struct platform_device *pdev)
 	{
 		int min_div = (2 << 0) * (2 * (4 + 1));
 		int max_div = (2 << 3) * (2 * (63 + 1));
+
 		master->max_speed_hz = hw->pdata->mainclk_hz / min_div;
 		master->min_speed_hz =
 				hw->pdata->mainclk_hz / (max_div + 1) + 1;
@@ -972,8 +974,7 @@ static int __init au1550_spi_init(void)
 	if (usedma) {
 		ddma_memid = au1xxx_ddma_add_device(&au1550_spi_mem_dbdev);
 		if (!ddma_memid)
-			printk(KERN_ERR "au1550-spi: cannot add memory"
-					"dbdma device\n");
+			printk(KERN_ERR "au1550-spi: cannot add memory dbdma device\n");
 	}
 	return platform_driver_register(&au1550_spi_drv);
 }

drivers/spi/spi-bcm-qspi.c

@@ -881,7 +881,7 @@ static int bcm_qspi_bspi_exec_mem_op(struct spi_device *spi,
 	 * when using flex mode we need to send
 	 * the upper address byte to bspi
 	 */
-	if (bcm_qspi_bspi_ver_three(qspi) == false) {
+	if (!bcm_qspi_bspi_ver_three(qspi)) {
 		addr = from & 0xff000000;
 		bcm_qspi_write(qspi, BSPI,
 			       BSPI_BSPI_FLASH_UPPER_ADDR_BYTE, addr);

drivers/spi/spi-bcm2835.c

@@ -386,7 +386,7 @@ static irqreturn_t bcm2835_spi_interrupt(int irq, void *dev_id)
 		/* Transfer complete - reset SPI HW */
 		bcm2835_spi_reset_hw(bs);
 		/* wake up the framework */
-		complete(&bs->ctlr->xfer_completion);
+		spi_finalize_current_transfer(bs->ctlr);
 	}
 
 	return IRQ_HANDLED;
@@ -608,7 +608,7 @@ static void bcm2835_spi_dma_rx_done(void *data)
 	bcm2835_spi_reset_hw(bs);
 
 	/* and mark as completed */;
-	complete(&ctlr->xfer_completion);
+	spi_finalize_current_transfer(ctlr);
 }
 
 /**
@@ -640,7 +640,7 @@ static void bcm2835_spi_dma_tx_done(void *data)
 
 	bcm2835_spi_undo_prologue(bs);
 	bcm2835_spi_reset_hw(bs);
-	complete(&ctlr->xfer_completion);
+	spi_finalize_current_transfer(ctlr);
 }
 
 /**
@@ -1307,6 +1307,8 @@ static int bcm2835_spi_probe(struct platform_device *pdev)
 		return dev_err_probe(&pdev->dev, PTR_ERR(bs->clk),
 				     "could not get clk\n");
 
+	ctlr->max_speed_hz = clk_get_rate(bs->clk) / 2;
+
 	bs->irq = platform_get_irq(pdev, 0);
 	if (bs->irq <= 0)
 		return bs->irq ? bs->irq : -ENODEV;

drivers/spi/spi-bcm2835aux.c

@@ -254,7 +254,7 @@ static irqreturn_t bcm2835aux_spi_interrupt(int irq, void *dev_id)
 	/* and if rx_len is 0 then disable interrupts and wake up completion */
 	if (!bs->rx_len) {
 		bcm2835aux_wr(bs, BCM2835_AUX_SPI_CNTL1, bs->cntl[1]);
-		complete(&master->xfer_completion);
+		spi_finalize_current_transfer(master);
 	}
 
 	return IRQ_HANDLED;

drivers/spi/spi-clps711x.c

@@ -104,7 +104,7 @@ static int spi_clps711x_probe(struct platform_device *pdev)
 	master->use_gpio_descriptors = true;
 	master->bus_num = -1;
 	master->mode_bits = SPI_CPHA | SPI_CS_HIGH;
-	master->bits_per_word_mask =  SPI_BPW_RANGE_MASK(1, 8);
+	master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 8);
 	master->dev.of_node = pdev->dev.of_node;
 	master->prepare_message = spi_clps711x_prepare_message;
 	master->transfer_one = spi_clps711x_transfer_one;

drivers/spi/spi-hisi-sfc-v3xx.c

@@ -19,6 +19,8 @@
 
 #define HISI_SFC_V3XX_VERSION (0x1f8)
 
+#define HISI_SFC_V3XX_GLB_CFG (0x100)
+#define HISI_SFC_V3XX_GLB_CFG_CS0_ADDR_MODE BIT(2)
 #define HISI_SFC_V3XX_RAW_INT_STAT (0x120)
 #define HISI_SFC_V3XX_INT_STAT (0x124)
 #define HISI_SFC_V3XX_INT_MASK (0x128)
@@ -75,6 +77,7 @@ struct hisi_sfc_v3xx_host {
 	void __iomem *regbase;
 	int max_cmd_dword;
 	struct completion *completion;
+	u8 address_mode;
 	int irq;
 };
 
@@ -168,10 +171,18 @@ static int hisi_sfc_v3xx_adjust_op_size(struct spi_mem *mem,
 static bool hisi_sfc_v3xx_supports_op(struct spi_mem *mem,
 				      const struct spi_mem_op *op)
 {
+	struct spi_device *spi = mem->spi;
+	struct hisi_sfc_v3xx_host *host;
+
+	host = spi_controller_get_devdata(spi->master);
+
 	if (op->data.buswidth > 4 || op->dummy.buswidth > 4 ||
 	    op->addr.buswidth > 4 || op->cmd.buswidth > 4)
 		return false;
 
+	if (op->addr.nbytes != host->address_mode && op->addr.nbytes)
+		return false;
+
 	return spi_mem_default_supports_op(mem, op);
 }
 
@@ -416,7 +427,7 @@ static int hisi_sfc_v3xx_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct hisi_sfc_v3xx_host *host;
 	struct spi_controller *ctlr;
-	u32 version;
+	u32 version, glb_config;
 	int ret;
 
 	ctlr = spi_alloc_master(&pdev->dev, sizeof(*host));
@@ -463,16 +474,24 @@ static int hisi_sfc_v3xx_probe(struct platform_device *pdev)
 	ctlr->num_chipselect = 1;
 	ctlr->mem_ops = &hisi_sfc_v3xx_mem_ops;
 
+	/*
+	 * The address mode of the controller is either 3 or 4,
+	 * which is indicated by the address mode bit in
+	 * the global config register. The register is read only
+	 * for the OS driver.
+	 */
+	glb_config = readl(host->regbase + HISI_SFC_V3XX_GLB_CFG);
+	if (glb_config & HISI_SFC_V3XX_GLB_CFG_CS0_ADDR_MODE)
+		host->address_mode = 4;
+	else
+		host->address_mode = 3;
+
 	version = readl(host->regbase + HISI_SFC_V3XX_VERSION);
 
-	switch (version) {
-	case 0x351:
+	if (version >= 0x351)
 		host->max_cmd_dword = 64;
-		break;
-	default:
+	else
 		host->max_cmd_dword = 16;
-		break;
-	}
 
 	ret = devm_spi_register_controller(dev, ctlr);
 	if (ret)

drivers/spi/spi-imx.c

@@ -1685,7 +1685,7 @@ static int spi_imx_probe(struct platform_device *pdev)
 	master->dev.of_node = pdev->dev.of_node;
 	ret = spi_bitbang_start(&spi_imx->bitbang);
 	if (ret) {
-		dev_err(&pdev->dev, "bitbang start failed with %d\n", ret);
+		dev_err_probe(&pdev->dev, ret, "bitbang start failed\n");
 		goto out_bitbang_start;
 	}
 

drivers/spi/spi-mem.c

@@ -137,8 +137,8 @@ static int spi_check_buswidth_req(struct spi_mem *mem, u8 buswidth, bool tx)
 	return -ENOTSUPP;
 }
 
-bool spi_mem_default_supports_op(struct spi_mem *mem,
-				 const struct spi_mem_op *op)
+static bool spi_mem_check_buswidth(struct spi_mem *mem,
+				   const struct spi_mem_op *op)
 {
 	if (spi_check_buswidth_req(mem, op->cmd.buswidth, true))
 		return false;
@@ -156,13 +156,29 @@ bool spi_mem_default_supports_op(struct spi_mem *mem,
 				   op->data.dir == SPI_MEM_DATA_OUT))
 		return false;
 
+	return true;
+}
+
+bool spi_mem_dtr_supports_op(struct spi_mem *mem,
+			     const struct spi_mem_op *op)
+{
+	if (op->cmd.nbytes != 2)
+		return false;
+
+	return spi_mem_check_buswidth(mem, op);
+}
+EXPORT_SYMBOL_GPL(spi_mem_dtr_supports_op);
+
+bool spi_mem_default_supports_op(struct spi_mem *mem,
+				 const struct spi_mem_op *op)
+{
 	if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr)
 		return false;
 
 	if (op->cmd.nbytes != 1)
 		return false;
 
-	return true;
+	return spi_mem_check_buswidth(mem, op);
 }
 EXPORT_SYMBOL_GPL(spi_mem_default_supports_op);
 
@@ -354,6 +370,7 @@ int spi_mem_exec_op(struct spi_mem *mem, const struct spi_mem_op *op)
 		xfers[xferpos].tx_buf = tmpbuf + op->addr.nbytes + 1;
 		xfers[xferpos].len = op->dummy.nbytes;
 		xfers[xferpos].tx_nbits = op->dummy.buswidth;
+		xfers[xferpos].dummy_data = 1;
 		spi_message_add_tail(&xfers[xferpos], &msg);
 		xferpos++;
 		totalxferlen += op->dummy.nbytes;

drivers/spi/spi-mpc52xx.c

@@ -248,7 +248,9 @@ static int mpc52xx_spi_fsmstate_transfer(int irq, struct mpc52xx_spi *ms,
 	ms->len--;
 	if (ms->len == 0) {
 		ms->timestamp = get_tbl();
-		ms->timestamp += ms->transfer->delay_usecs * tb_ticks_per_usec;
+		if (ms->transfer->delay.unit == SPI_DELAY_UNIT_USECS)
+			ms->timestamp += ms->transfer->delay.value *
+					 tb_ticks_per_usec;
 		ms->state = mpc52xx_spi_fsmstate_wait;
 		return FSM_CONTINUE;
 	}

drivers/spi/spi-mt65xx.c

@@ -287,7 +287,7 @@ static void mtk_spi_set_cs(struct spi_device *spi, bool enable)
 static void mtk_spi_prepare_transfer(struct spi_master *master,
 				     struct spi_transfer *xfer)
 {
-	u32 spi_clk_hz, div, sck_time, cs_time, reg_val;
+	u32 spi_clk_hz, div, sck_time, reg_val;
 	struct mtk_spi *mdata = spi_master_get_devdata(master);
 
 	spi_clk_hz = clk_get_rate(mdata->spi_clk);
@@ -297,32 +297,25 @@ static void mtk_spi_prepare_transfer(struct spi_master *master,
 		div = 1;
 
 	sck_time = (div + 1) / 2;
-	cs_time = sck_time * 2;
 
 	if (mdata->dev_comp->enhance_timing) {
-		reg_val = (((sck_time - 1) & 0xffff)
+		reg_val = readl(mdata->base + SPI_CFG2_REG);
+		reg_val &= ~(0xffff << SPI_CFG2_SCK_HIGH_OFFSET);
+		reg_val |= (((sck_time - 1) & 0xffff)
 			   << SPI_CFG2_SCK_HIGH_OFFSET);
+		reg_val &= ~(0xffff << SPI_CFG2_SCK_LOW_OFFSET);
 		reg_val |= (((sck_time - 1) & 0xffff)
 			   << SPI_CFG2_SCK_LOW_OFFSET);
 		writel(reg_val, mdata->base + SPI_CFG2_REG);
-		reg_val = (((cs_time - 1) & 0xffff)
-			   << SPI_ADJUST_CFG0_CS_HOLD_OFFSET);
-		reg_val |= (((cs_time - 1) & 0xffff)
-			   << SPI_ADJUST_CFG0_CS_SETUP_OFFSET);
-		writel(reg_val, mdata->base + SPI_CFG0_REG);
 	} else {
-		reg_val = (((sck_time - 1) & 0xff)
+		reg_val = readl(mdata->base + SPI_CFG0_REG);
+		reg_val &= ~(0xff << SPI_CFG0_SCK_HIGH_OFFSET);
+		reg_val |= (((sck_time - 1) & 0xff)
 			   << SPI_CFG0_SCK_HIGH_OFFSET);
+		reg_val &= ~(0xff << SPI_CFG0_SCK_LOW_OFFSET);
 		reg_val |= (((sck_time - 1) & 0xff) << SPI_CFG0_SCK_LOW_OFFSET);
-		reg_val |= (((cs_time - 1) & 0xff) << SPI_CFG0_CS_HOLD_OFFSET);
-		reg_val |= (((cs_time - 1) & 0xff) << SPI_CFG0_CS_SETUP_OFFSET);
 		writel(reg_val, mdata->base + SPI_CFG0_REG);
 	}
-
-	reg_val = readl(mdata->base + SPI_CFG1_REG);
-	reg_val &= ~SPI_CFG1_CS_IDLE_MASK;
-	reg_val |= (((cs_time - 1) & 0xff) << SPI_CFG1_CS_IDLE_OFFSET);
-	writel(reg_val, mdata->base + SPI_CFG1_REG);
 }
 
 static void mtk_spi_setup_packet(struct spi_master *master)
@@ -513,6 +506,52 @@ static bool mtk_spi_can_dma(struct spi_master *master,
 		(unsigned long)xfer->rx_buf % 4 == 0);
 }
 
+static int mtk_spi_set_hw_cs_timing(struct spi_device *spi,
+				    struct spi_delay *setup,
+				    struct spi_delay *hold,
+				    struct spi_delay *inactive)
+{
+	struct mtk_spi *mdata = spi_master_get_devdata(spi->master);
+	u16 setup_dly, hold_dly, inactive_dly;
+	u32 reg_val;
+
+	if ((setup && setup->unit != SPI_DELAY_UNIT_SCK) ||
+	    (hold && hold->unit != SPI_DELAY_UNIT_SCK) ||
+	    (inactive && inactive->unit != SPI_DELAY_UNIT_SCK)) {
+		dev_err(&spi->dev,
+			"Invalid delay unit, should be SPI_DELAY_UNIT_SCK\n");
+		return -EINVAL;
+	}
+
+	setup_dly = setup ? setup->value : 1;
+	hold_dly = hold ? hold->value : 1;
+	inactive_dly = inactive ? inactive->value : 1;
+
+	reg_val = readl(mdata->base + SPI_CFG0_REG);
+	if (mdata->dev_comp->enhance_timing) {
+		reg_val &= ~(0xffff << SPI_ADJUST_CFG0_CS_HOLD_OFFSET);
+		reg_val |= (((hold_dly - 1) & 0xffff)
+			   << SPI_ADJUST_CFG0_CS_HOLD_OFFSET);
+		reg_val &= ~(0xffff << SPI_ADJUST_CFG0_CS_SETUP_OFFSET);
+		reg_val |= (((setup_dly - 1) & 0xffff)
+			   << SPI_ADJUST_CFG0_CS_SETUP_OFFSET);
+	} else {
+		reg_val &= ~(0xff << SPI_CFG0_CS_HOLD_OFFSET);
+		reg_val |= (((hold_dly - 1) & 0xff) << SPI_CFG0_CS_HOLD_OFFSET);
+		reg_val &= ~(0xff << SPI_CFG0_CS_SETUP_OFFSET);
+		reg_val |= (((setup_dly - 1) & 0xff)
+			    << SPI_CFG0_CS_SETUP_OFFSET);
+	}
+	writel(reg_val, mdata->base + SPI_CFG0_REG);
+
+	reg_val = readl(mdata->base + SPI_CFG1_REG);
+	reg_val &= ~SPI_CFG1_CS_IDLE_MASK;
+	reg_val |= (((inactive_dly - 1) & 0xff) << SPI_CFG1_CS_IDLE_OFFSET);
+	writel(reg_val, mdata->base + SPI_CFG1_REG);
+
+	return 0;
+}
+
 static int mtk_spi_setup(struct spi_device *spi)
 {
 	struct mtk_spi *mdata = spi_master_get_devdata(spi->master);
@@ -644,6 +683,7 @@ static int mtk_spi_probe(struct platform_device *pdev)
 	master->transfer_one = mtk_spi_transfer_one;
 	master->can_dma = mtk_spi_can_dma;
 	master->setup = mtk_spi_setup;
+	master->set_cs_timing = mtk_spi_set_hw_cs_timing;
 
 	of_id = of_match_node(mtk_spi_of_match, pdev->dev.of_node);
 	if (!of_id) {

drivers/spi/spi-orion.c

@@ -96,10 +96,16 @@ struct orion_spi {
 	struct clk              *clk;
 	struct clk              *axi_clk;
 	const struct orion_spi_dev *devdata;
+	struct device		*dev;
 
 	struct orion_child_options	child[ORION_NUM_CHIPSELECTS];
 };
 
+#ifdef CONFIG_PM
+static int orion_spi_runtime_suspend(struct device *dev);
+static int orion_spi_runtime_resume(struct device *dev);
+#endif
+
 static inline void __iomem *spi_reg(struct orion_spi *orion_spi, u32 reg)
 {
 	return orion_spi->base + reg;
@@ -369,8 +375,15 @@ orion_spi_write_read_8bit(struct spi_device *spi,
 {
 	void __iomem *tx_reg, *rx_reg, *int_reg;
 	struct orion_spi *orion_spi;
+	bool cs_single_byte;
+
+	cs_single_byte = spi->mode & SPI_CS_WORD;
 
 	orion_spi = spi_master_get_devdata(spi->master);
+
+	if (cs_single_byte)
+		orion_spi_set_cs(spi, 0);
+
 	tx_reg = spi_reg(orion_spi, ORION_SPI_DATA_OUT_REG);
 	rx_reg = spi_reg(orion_spi, ORION_SPI_DATA_IN_REG);
 	int_reg = spi_reg(orion_spi, ORION_SPI_INT_CAUSE_REG);
@@ -384,6 +397,11 @@ orion_spi_write_read_8bit(struct spi_device *spi,
 		writel(0, tx_reg);
 
 	if (orion_spi_wait_till_ready(orion_spi) < 0) {
+		if (cs_single_byte) {
+			orion_spi_set_cs(spi, 1);
+			/* Satisfy some SLIC devices requirements */
+			udelay(4);
+		}
 		dev_err(&spi->dev, "TXS timed out\n");
 		return -1;
 	}
@@ -391,6 +409,12 @@ orion_spi_write_read_8bit(struct spi_device *spi,
 	if (rx_buf && *rx_buf)
 		*(*rx_buf)++ = readl(rx_reg);
 
+	if (cs_single_byte) {
+		orion_spi_set_cs(spi, 1);
+		/* Satisfy some SLIC devices requirements */
+		udelay(4);
+	}
+
 	return 1;
 }
 
@@ -401,6 +425,11 @@ orion_spi_write_read_16bit(struct spi_device *spi,
 	void __iomem *tx_reg, *rx_reg, *int_reg;
 	struct orion_spi *orion_spi;
 
+	if (spi->mode & SPI_CS_WORD) {
+		dev_err(&spi->dev, "SPI_CS_WORD is only supported for 8 bit words\n");
+		return -1;
+	}
+
 	orion_spi = spi_master_get_devdata(spi->master);
 	tx_reg = spi_reg(orion_spi, ORION_SPI_DATA_OUT_REG);
 	rx_reg = spi_reg(orion_spi, ORION_SPI_DATA_IN_REG);
@@ -440,12 +469,13 @@ orion_spi_write_read(struct spi_device *spi, struct spi_transfer *xfer)
 	orion_spi = spi_master_get_devdata(spi->master);
 
 	/*
-	 * Use SPI direct write mode if base address is available. Otherwise
-	 * fall back to PIO mode for this transfer.
+	 * Use SPI direct write mode if base address is available
+	 * and SPI_CS_WORD flag is not set.
+	 * Otherwise fall back to PIO mode for this transfer.
 	 */
 	vaddr = orion_spi->child[cs].direct_access.vaddr;
 
-	if (vaddr && xfer->tx_buf && word_len == 8) {
+	if (vaddr && xfer->tx_buf && word_len == 8 && (spi->mode & SPI_CS_WORD) == 0) {
 		unsigned int cnt = count / 4;
 		unsigned int rem = count % 4;
 
@@ -507,7 +537,21 @@ static int orion_spi_transfer_one(struct spi_master *master,
 
 static int orion_spi_setup(struct spi_device *spi)
 {
-	return orion_spi_setup_transfer(spi, NULL);
+	int ret;
+#ifdef CONFIG_PM
+	struct orion_spi *orion_spi = spi_master_get_devdata(spi->master);
+	struct device *dev = orion_spi->dev;
+
+	orion_spi_runtime_resume(dev);
+#endif
+
+	ret = orion_spi_setup_transfer(spi, NULL);
+
+#ifdef CONFIG_PM
+	orion_spi_runtime_suspend(dev);
+#endif
+
+	return ret;
 }
 
 static int orion_spi_reset(struct orion_spi *orion_spi)
@@ -616,7 +660,7 @@ static int orion_spi_probe(struct platform_device *pdev)
 	}
 
 	/* we support all 4 SPI modes and LSB first option */
-	master->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST;
+	master->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST | SPI_CS_WORD;
 	master->set_cs = orion_spi_set_cs;
 	master->transfer_one = orion_spi_transfer_one;
 	master->num_chipselect = ORION_NUM_CHIPSELECTS;
@@ -630,6 +674,7 @@ static int orion_spi_probe(struct platform_device *pdev)
 
 	spi = spi_master_get_devdata(master);
 	spi->master = master;
+	spi->dev = &pdev->dev;
 
 	of_id = of_match_device(orion_spi_of_match_table, &pdev->dev);
 	devdata = (of_id) ? of_id->data : &orion_spi_dev_data;

drivers/spi/spi-pxa2xx.c

@@ -1492,6 +1492,10 @@ static const struct pci_device_id pxa2xx_spi_pci_compound_match[] = {
 	{ PCI_VDEVICE(INTEL, 0x43ab), LPSS_CNL_SSP },
 	{ PCI_VDEVICE(INTEL, 0x43fb), LPSS_CNL_SSP },
 	{ PCI_VDEVICE(INTEL, 0x43fd), LPSS_CNL_SSP },
+	/* ADL-P */
+	{ PCI_VDEVICE(INTEL, 0x51aa), LPSS_CNL_SSP },
+	{ PCI_VDEVICE(INTEL, 0x51ab), LPSS_CNL_SSP },
+	{ PCI_VDEVICE(INTEL, 0x51fb), LPSS_CNL_SSP },
 	/* APL */
 	{ PCI_VDEVICE(INTEL, 0x5ac2), LPSS_BXT_SSP },
 	{ PCI_VDEVICE(INTEL, 0x5ac4), LPSS_BXT_SSP },

drivers/spi/spi-qcom-qspi.c

@@ -511,8 +511,7 @@ static int qcom_qspi_probe(struct platform_device *pdev)
 	ret = platform_get_irq(pdev, 0);
 	if (ret < 0)
 		return ret;
-	ret = devm_request_irq(dev, ret, qcom_qspi_irq,
-			IRQF_TRIGGER_HIGH, dev_name(dev), ctrl);
+	ret = devm_request_irq(dev, ret, qcom_qspi_irq, 0, dev_name(dev), ctrl);
 	if (ret) {
 		dev_err(dev, "Failed to request irq %d\n", ret);
 		return ret;

drivers/spi/spi-realtek-rtl.c

+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/spi/spi.h>
+
+struct rtspi {
+	void __iomem *base;
+};
+
+/* SPI Flash Configuration Register */
+#define RTL_SPI_SFCR			0x00
+#define RTL_SPI_SFCR_RBO		BIT(28)
+#define RTL_SPI_SFCR_WBO		BIT(27)
+
+/* SPI Flash Control and Status Register */
+#define RTL_SPI_SFCSR			0x08
+#define RTL_SPI_SFCSR_CSB0		BIT(31)
+#define RTL_SPI_SFCSR_CSB1		BIT(30)
+#define RTL_SPI_SFCSR_RDY		BIT(27)
+#define RTL_SPI_SFCSR_CS		BIT(24)
+#define RTL_SPI_SFCSR_LEN_MASK		~(0x03 << 28)
+#define RTL_SPI_SFCSR_LEN1		(0x00 << 28)
+#define RTL_SPI_SFCSR_LEN4		(0x03 << 28)
+
+/* SPI Flash Data Register */
+#define RTL_SPI_SFDR			0x0c
+
+#define REG(x)		(rtspi->base + x)
+
+
+static void rt_set_cs(struct spi_device *spi, bool active)
+{
+	struct rtspi *rtspi = spi_controller_get_devdata(spi->controller);
+	u32 value;
+
+	/* CS0 bit is active low */
+	value = readl(REG(RTL_SPI_SFCSR));
+	if (active)
+		value |= RTL_SPI_SFCSR_CSB0;
+	else
+		value &= ~RTL_SPI_SFCSR_CSB0;
+	writel(value, REG(RTL_SPI_SFCSR));
+}
+
+static void set_size(struct rtspi *rtspi, int size)
+{
+	u32 value;
+
+	value = readl(REG(RTL_SPI_SFCSR));
+	value &= RTL_SPI_SFCSR_LEN_MASK;
+	if (size == 4)
+		value |= RTL_SPI_SFCSR_LEN4;
+	else if (size == 1)
+		value |= RTL_SPI_SFCSR_LEN1;
+	writel(value, REG(RTL_SPI_SFCSR));
+}
+
+static inline void wait_ready(struct rtspi *rtspi)
+{
+	while (!(readl(REG(RTL_SPI_SFCSR)) & RTL_SPI_SFCSR_RDY))
+		cpu_relax();
+}
+static void send4(struct rtspi *rtspi, const u32 *buf)
+{
+	wait_ready(rtspi);
+	set_size(rtspi, 4);
+	writel(*buf, REG(RTL_SPI_SFDR));
+}
+
+static void send1(struct rtspi *rtspi, const u8 *buf)
+{
+	wait_ready(rtspi);
+	set_size(rtspi, 1);
+	writel(buf[0] << 24, REG(RTL_SPI_SFDR));
+}
+
+static void rcv4(struct rtspi *rtspi, u32 *buf)
+{
+	wait_ready(rtspi);
+	set_size(rtspi, 4);
+	*buf = readl(REG(RTL_SPI_SFDR));
+}
+
+static void rcv1(struct rtspi *rtspi, u8 *buf)
+{
+	wait_ready(rtspi);
+	set_size(rtspi, 1);
+	*buf = readl(REG(RTL_SPI_SFDR)) >> 24;
+}
+
+static int transfer_one(struct spi_controller *ctrl, struct spi_device *spi,
+			struct spi_transfer *xfer)
+{
+	struct rtspi *rtspi = spi_controller_get_devdata(ctrl);
+	void *rx_buf;
+	const void *tx_buf;
+	int cnt;
+
+	tx_buf = xfer->tx_buf;
+	rx_buf = xfer->rx_buf;
+	cnt = xfer->len;
+	if (tx_buf) {
+		while (cnt >= 4) {
+			send4(rtspi, tx_buf);
+			tx_buf += 4;
+			cnt -= 4;
+		}
+		while (cnt) {
+			send1(rtspi, tx_buf);
+			tx_buf++;
+			cnt--;
+		}
+	} else if (rx_buf) {
+		while (cnt >= 4) {
+			rcv4(rtspi, rx_buf);
+			rx_buf += 4;
+			cnt -= 4;
+		}
+		while (cnt) {
+			rcv1(rtspi, rx_buf);
+			rx_buf++;
+			cnt--;
+		}
+	}
+
+	spi_finalize_current_transfer(ctrl);
+
+	return 0;
+}
+
+static void init_hw(struct rtspi *rtspi)
+{
+	u32 value;
+
+	/* Turn on big-endian byte ordering */
+	value = readl(REG(RTL_SPI_SFCR));
+	value |= RTL_SPI_SFCR_RBO | RTL_SPI_SFCR_WBO;
+	writel(value, REG(RTL_SPI_SFCR));
+
+	value = readl(REG(RTL_SPI_SFCSR));
+	/* Permanently disable CS1, since it's never used */
+	value |= RTL_SPI_SFCSR_CSB1;
+	/* Select CS0 for use */
+	value &= RTL_SPI_SFCSR_CS;
+	writel(value, REG(RTL_SPI_SFCSR));
+}
+
+static int realtek_rtl_spi_probe(struct platform_device *pdev)
+{
+	struct spi_controller *ctrl;
+	struct rtspi *rtspi;
+	int err;
+
+	ctrl = devm_spi_alloc_master(&pdev->dev, sizeof(*rtspi));
+	if (!ctrl) {
+		dev_err(&pdev->dev, "Error allocating SPI controller\n");
+		return -ENOMEM;
+	}
+	platform_set_drvdata(pdev, ctrl);
+	rtspi = spi_controller_get_devdata(ctrl);
+
+	rtspi->base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
+	if (IS_ERR(rtspi->base)) {
+		dev_err(&pdev->dev, "Could not map SPI register address");
+		return -ENOMEM;
+	}
+
+	init_hw(rtspi);
+
+	ctrl->dev.of_node = pdev->dev.of_node;
+	ctrl->flags = SPI_CONTROLLER_HALF_DUPLEX;
+	ctrl->set_cs = rt_set_cs;
+	ctrl->transfer_one = transfer_one;
+
+	err = devm_spi_register_controller(&pdev->dev, ctrl);
+	if (err) {
+		dev_err(&pdev->dev, "Could not register SPI controller\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+
+static const struct of_device_id realtek_rtl_spi_of_ids[] = {
+	{ .compatible = "realtek,rtl8380-spi" },
+	{ .compatible = "realtek,rtl8382-spi" },
+	{ .compatible = "realtek,rtl8391-spi" },
+	{ .compatible = "realtek,rtl8392-spi" },
+	{ .compatible = "realtek,rtl8393-spi" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, realtek_rtl_spi_of_ids);
+
+static struct platform_driver realtek_rtl_spi_driver = {
+	.probe = realtek_rtl_spi_probe,
+	.driver = {
+		.name = "realtek-rtl-spi",
+		.of_match_table = realtek_rtl_spi_of_ids,
+	},
+};
+
+module_platform_driver(realtek_rtl_spi_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Bert Vermeulen <bert@biot.com>");
+MODULE_DESCRIPTION("Realtek RTL SPI driver");

drivers/spi/spi-rockchip.c

@@ -566,7 +566,7 @@ static int rockchip_spi_slave_abort(struct spi_controller *ctlr)
 	struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);
 
 	rs->slave_abort = true;
-	complete(&ctlr->xfer_completion);
+	spi_finalize_current_transfer(ctlr);
 
 	return 0;
 }

drivers/spi/spi-rpc-if.c

@@ -176,15 +176,14 @@ static int rpcif_spi_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int rpcif_spi_suspend(struct device *dev)
+static int __maybe_unused rpcif_spi_suspend(struct device *dev)
 {
 	struct spi_controller *ctlr = dev_get_drvdata(dev);
 
 	return spi_controller_suspend(ctlr);
 }
 
-static int rpcif_spi_resume(struct device *dev)
+static int __maybe_unused rpcif_spi_resume(struct device *dev)
 {
 	struct spi_controller *ctlr = dev_get_drvdata(dev);
 
@@ -192,17 +191,15 @@ static int rpcif_spi_resume(struct device *dev)
 }
 
 static SIMPLE_DEV_PM_OPS(rpcif_spi_pm_ops, rpcif_spi_suspend, rpcif_spi_resume);
-#define DEV_PM_OPS	(&rpcif_spi_pm_ops)
-#else
-#define DEV_PM_OPS	NULL
-#endif
 
 static struct platform_driver rpcif_spi_driver = {
 	.probe	= rpcif_spi_probe,
 	.remove	= rpcif_spi_remove,
 	.driver = {
 		.name	= "rpc-if-spi",
-		.pm	= DEV_PM_OPS,
+#ifdef CONFIG_PM_SLEEP
+		.pm	= &rpcif_spi_pm_ops,
+#endif
 	},
 };
 module_platform_driver(rpcif_spi_driver);

drivers/spi/spi-sh-msiof.c

@@ -259,11 +259,13 @@ static const u32 sh_msiof_spi_div_array[] = {
 };
 
 static void sh_msiof_spi_set_clk_regs(struct sh_msiof_spi_priv *p,
-				      unsigned long parent_rate, u32 spi_hz)
+				      struct spi_transfer *t)
 {
+	unsigned long parent_rate = clk_get_rate(p->clk);
+	unsigned int div_pow = p->min_div_pow;
+	u32 spi_hz = t->speed_hz;
 	unsigned long div;
 	u32 brps, scr;
-	unsigned int div_pow = p->min_div_pow;
 
 	if (!spi_hz || !parent_rate) {
 		WARN(1, "Invalid clock rate parameters %lu and %u\n",
@@ -292,6 +294,8 @@ static void sh_msiof_spi_set_clk_regs(struct sh_msiof_spi_priv *p,
 		brps = 32;
 	}
 
+	t->effective_speed_hz = parent_rate / (brps << div_pow);
+
 	scr = sh_msiof_spi_div_array[div_pow] | SISCR_BRPS(brps);
 	sh_msiof_write(p, SITSCR, scr);
 	if (!(p->ctlr->flags & SPI_CONTROLLER_MUST_TX))
@@ -923,7 +927,7 @@ static int sh_msiof_transfer_one(struct spi_controller *ctlr,
 
 	/* setup clocks (clock already enabled in chipselect()) */
 	if (!spi_controller_is_slave(p->ctlr))
-		sh_msiof_spi_set_clk_regs(p, clk_get_rate(p->clk), t->speed_hz);
+		sh_msiof_spi_set_clk_regs(p, t);
 
 	while (ctlr->dma_tx && len > 15) {
 		/*
@@ -1258,6 +1262,7 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
 	const struct sh_msiof_chipdata *chipdata;
 	struct sh_msiof_spi_info *info;
 	struct sh_msiof_spi_priv *p;
+	unsigned long clksrc;
 	int i;
 	int ret;
 
@@ -1333,6 +1338,9 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
 	/* init controller code */
 	ctlr->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
 	ctlr->mode_bits |= SPI_LSB_FIRST | SPI_3WIRE;
+	clksrc = clk_get_rate(p->clk);
+	ctlr->min_speed_hz = DIV_ROUND_UP(clksrc, 1024);
+	ctlr->max_speed_hz = DIV_ROUND_UP(clksrc, 1 << p->min_div_pow);
 	ctlr->flags = chipdata->ctlr_flags;
 	ctlr->bus_num = pdev->id;
 	ctlr->num_chipselect = p->info->num_chipselect;

drivers/spi/spi.c

@@ -810,7 +810,8 @@ static void spi_set_cs(struct spi_device *spi, bool enable)
 	spi->controller->last_cs_enable = enable;
 	spi->controller->last_cs_mode_high = spi->mode & SPI_CS_HIGH;
 
-	if (!spi->controller->set_cs_timing) {
+	if (spi->cs_gpiod || gpio_is_valid(spi->cs_gpio) ||
+	    !spi->controller->set_cs_timing) {
 		if (enable1)
 			spi_delay_exec(&spi->controller->cs_setup, NULL);
 		else
@@ -841,7 +842,8 @@ static void spi_set_cs(struct spi_device *spi, bool enable)
 		spi->controller->set_cs(spi, !enable);
 	}
 
-	if (!spi->controller->set_cs_timing) {
+	if (spi->cs_gpiod || gpio_is_valid(spi->cs_gpio) ||
+	    !spi->controller->set_cs_timing) {
 		if (!enable1)
 			spi_delay_exec(&spi->controller->cs_inactive, NULL);
 	}
@@ -1945,6 +1947,9 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi,
 	/* Device DUAL/QUAD mode */
 	if (!of_property_read_u32(nc, "spi-tx-bus-width", &value)) {
 		switch (value) {
+		case 0:
+			spi->mode |= SPI_NO_TX;
+			break;
 		case 1:
 			break;
 		case 2:
@@ -1966,6 +1971,9 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi,
 
 	if (!of_property_read_u32(nc, "spi-rx-bus-width", &value)) {
 		switch (value) {
+		case 0:
+			spi->mode |= SPI_NO_RX;
+			break;
 		case 1:
 			break;
 		case 2:
@@ -3333,12 +3341,16 @@ int spi_setup(struct spi_device *spi)
 	unsigned	bad_bits, ugly_bits;
 	int		status;
 
-	/* check mode to prevent that DUAL and QUAD set at the same time
+	/*
+	 * check mode to prevent that any two of DUAL, QUAD and NO_MOSI/MISO
+	 * are set at the same time
 	 */
-	if (((spi->mode & SPI_TX_DUAL) && (spi->mode & SPI_TX_QUAD)) ||
-		((spi->mode & SPI_RX_DUAL) && (spi->mode & SPI_RX_QUAD))) {
+	if ((hweight_long(spi->mode &
+		(SPI_TX_DUAL | SPI_TX_QUAD | SPI_NO_TX)) > 1) ||
+	    (hweight_long(spi->mode &
+		(SPI_RX_DUAL | SPI_RX_QUAD | SPI_NO_RX)) > 1)) {
 		dev_err(&spi->dev,
-		"setup: can not select dual and quad at the same time\n");
+		"setup: can not select any two of dual, quad and no-rx/tx at the same time\n");
 		return -EINVAL;
 	}
 	/* if it is SPI_3WIRE mode, DUAL and QUAD should be forbidden
@@ -3352,7 +3364,8 @@ int spi_setup(struct spi_device *spi)
 	 * SPI_CS_WORD has a fallback software implementation,
 	 * so it is ignored here.
 	 */
-	bad_bits = spi->mode & ~(spi->controller->mode_bits | SPI_CS_WORD);
+	bad_bits = spi->mode & ~(spi->controller->mode_bits | SPI_CS_WORD |
+				 SPI_NO_TX | SPI_NO_RX);
 	/* nothing prevents from working with active-high CS in case if it
 	 * is driven by GPIO.
 	 */
@@ -3449,11 +3462,31 @@ EXPORT_SYMBOL_GPL(spi_setup);
 int spi_set_cs_timing(struct spi_device *spi, struct spi_delay *setup,
 		      struct spi_delay *hold, struct spi_delay *inactive)
 {
+	struct device *parent = spi->controller->dev.parent;
 	size_t len;
+	int status;
+
+	if (spi->controller->set_cs_timing &&
+	    !(spi->cs_gpiod || gpio_is_valid(spi->cs_gpio))) {
+		if (spi->controller->auto_runtime_pm) {
+			status = pm_runtime_get_sync(parent);
+			if (status < 0) {
+				pm_runtime_put_noidle(parent);
+				dev_err(&spi->controller->dev, "Failed to power device: %d\n",
+					status);
+				return status;
+			}
 
-	if (spi->controller->set_cs_timing)
-		return spi->controller->set_cs_timing(spi, setup, hold,
-						      inactive);
+			status = spi->controller->set_cs_timing(spi, setup,
+								hold, inactive);
+			pm_runtime_mark_last_busy(parent);
+			pm_runtime_put_autosuspend(parent);
+			return status;
+		} else {
+			return spi->controller->set_cs_timing(spi, setup, hold,
+							      inactive);
+		}
+	}
 
 	if ((setup && setup->unit == SPI_DELAY_UNIT_SCK) ||
 	    (hold && hold->unit == SPI_DELAY_UNIT_SCK) ||
@@ -3615,6 +3648,8 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
 		 * 2. check tx/rx_nbits match the mode in spi_device
 		 */
 		if (xfer->tx_buf) {
+			if (spi->mode & SPI_NO_TX)
+				return -EINVAL;
 			if (xfer->tx_nbits != SPI_NBITS_SINGLE &&
 				xfer->tx_nbits != SPI_NBITS_DUAL &&
 				xfer->tx_nbits != SPI_NBITS_QUAD)
@@ -3628,6 +3663,8 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
 		}
 		/* check transfer rx_nbits */
 		if (xfer->rx_buf) {
+			if (spi->mode & SPI_NO_RX)
+				return -EINVAL;
 			if (xfer->rx_nbits != SPI_NBITS_SINGLE &&
 				xfer->rx_nbits != SPI_NBITS_DUAL &&
 				xfer->rx_nbits != SPI_NBITS_QUAD)

include/dt-bindings/clock/tegra210-car.h

@@ -307,7 +307,7 @@
 #define TEGRA210_CLK_AUDIO4 275
 #define TEGRA210_CLK_SPDIF 276
 /* 277 */
-/* 278 */
+#define TEGRA210_CLK_QSPI_PM 278
 /* 279 */
 /* 280 */
 #define TEGRA210_CLK_SOR0_LVDS 281 /* deprecated */

include/linux/platform_data/efm32-spi.h

-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __LINUX_PLATFORM_DATA_EFM32_SPI_H__
-#define __LINUX_PLATFORM_DATA_EFM32_SPI_H__
-
-#include <linux/types.h>
-
-/**
- * struct efm32_spi_pdata
- * @location: pinmux location for the I/O pins (to be written to the ROUTE
- * 	register)
- */
-struct efm32_spi_pdata {
-	u8 location;
-};
-#endif /* ifndef __LINUX_PLATFORM_DATA_EFM32_SPI_H__ */

include/linux/spi/spi-mem.h

@@ -311,6 +311,9 @@ void spi_controller_dma_unmap_mem_op_data(struct spi_controller *ctlr,
 bool spi_mem_default_supports_op(struct spi_mem *mem,
 				 const struct spi_mem_op *op);
 
+bool spi_mem_dtr_supports_op(struct spi_mem *mem,
+			     const struct spi_mem_op *op);
+
 #else
 static inline int
 spi_controller_dma_map_mem_op_data(struct spi_controller *ctlr,
@@ -334,6 +337,12 @@ bool spi_mem_default_supports_op(struct spi_mem *mem,
 	return false;
 }
 
+static inline
+bool spi_mem_dtr_supports_op(struct spi_mem *mem,
+			     const struct spi_mem_op *op)
+{
+	return false;
+}
 #endif /* CONFIG_SPI_MEM */
 
 int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op);

include/linux/spi/spi.h

@@ -6,6 +6,7 @@
 #ifndef __LINUX_SPI_H
 #define __LINUX_SPI_H
 
+#include <linux/bits.h>
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
 #include <linux/slab.h>
@@ -15,6 +16,8 @@
 #include <linux/gpio/consumer.h>
 #include <linux/ptp_clock_kernel.h>
 
+#include <uapi/linux/spi/spi.h>
+
 struct dma_chan;
 struct property_entry;
 struct spi_controller;
@@ -164,28 +167,19 @@ struct spi_device {
 	u8			chip_select;
 	u8			bits_per_word;
 	bool			rt;
+#define SPI_NO_TX	BIT(31)		/* no transmit wire */
+#define SPI_NO_RX	BIT(30)		/* no receive wire */
+	/*
+	 * All bits defined above should be covered by SPI_MODE_KERNEL_MASK.
+	 * The SPI_MODE_KERNEL_MASK has the SPI_MODE_USER_MASK counterpart,
+	 * which is defined in 'include/uapi/linux/spi/spi.h'.
+	 * The bits defined here are from bit 31 downwards, while in
+	 * SPI_MODE_USER_MASK are from 0 upwards.
+	 * These bits must not overlap. A static assert check should make sure of that.
+	 * If adding extra bits, make sure to decrease the bit index below as well.
+	 */
+#define SPI_MODE_KERNEL_MASK	(~(BIT(30) - 1))
 	u32			mode;
-#define	SPI_CPHA	0x01			/* clock phase */
-#define	SPI_CPOL	0x02			/* clock polarity */
-#define	SPI_MODE_0	(0|0)			/* (original MicroWire) */
-#define	SPI_MODE_1	(0|SPI_CPHA)
-#define	SPI_MODE_2	(SPI_CPOL|0)
-#define	SPI_MODE_3	(SPI_CPOL|SPI_CPHA)
-#define	SPI_MODE_X_MASK	(SPI_CPOL|SPI_CPHA)
-#define	SPI_CS_HIGH	0x04			/* chipselect active high? */
-#define	SPI_LSB_FIRST	0x08			/* per-word bits-on-wire */
-#define	SPI_3WIRE	0x10			/* SI/SO signals shared */
-#define	SPI_LOOP	0x20			/* loopback mode */
-#define	SPI_NO_CS	0x40			/* 1 dev/bus, no chipselect */
-#define	SPI_READY	0x80			/* slave pulls low to pause */
-#define	SPI_TX_DUAL	0x100			/* transmit with 2 wires */
-#define	SPI_TX_QUAD	0x200			/* transmit with 4 wires */
-#define	SPI_RX_DUAL	0x400			/* receive with 2 wires */
-#define	SPI_RX_QUAD	0x800			/* receive with 4 wires */
-#define	SPI_CS_WORD	0x1000			/* toggle cs after each word */
-#define	SPI_TX_OCTAL	0x2000			/* transmit with 8 wires */
-#define	SPI_RX_OCTAL	0x4000			/* receive with 8 wires */
-#define	SPI_3WIRE_HIZ	0x8000			/* high impedance turnaround */
 	int			irq;
 	void			*controller_state;
 	void			*controller_data;
@@ -208,6 +202,10 @@ struct spi_device {
 	 */
 };
 
+/* Make sure that SPI_MODE_KERNEL_MASK & SPI_MODE_USER_MASK don't overlap */
+static_assert((SPI_MODE_KERNEL_MASK & SPI_MODE_USER_MASK) == 0,
+	      "SPI_MODE_USER_MASK & SPI_MODE_KERNEL_MASK must not overlap");
+
 static inline struct spi_device *to_spi_device(struct device *dev)
 {
 	return dev ? container_of(dev, struct spi_device, dev) : NULL;
@@ -624,7 +622,7 @@ struct spi_controller {
 
 	/*
 	 * These hooks are for drivers that use a generic implementation
-	 * of transfer_one_message() provied by the core.
+	 * of transfer_one_message() provided by the core.
 	 */
 	void (*set_cs)(struct spi_device *spi, bool enable);
 	int (*transfer_one)(struct spi_controller *ctlr, struct spi_device *spi,
@@ -827,6 +825,7 @@ extern void spi_res_release(struct spi_controller *ctlr,
  *      transfer. If 0 the default (from @spi_device) is used.
  * @bits_per_word: select a bits_per_word other than the device default
  *      for this transfer. If 0 the default (from @spi_device) is used.
+ * @dummy_data: indicates transfer is dummy bytes transfer.
  * @cs_change: affects chipselect after this transfer completes
  * @cs_change_delay: delay between cs deassert and assert when
  *      @cs_change is set and @spi_transfer is not the last in @spi_message
@@ -939,6 +938,7 @@ struct spi_transfer {
 	struct sg_table tx_sg;
 	struct sg_table rx_sg;
 
+	unsigned	dummy_data:1;
 	unsigned	cs_change:1;
 	unsigned	tx_nbits:3;
 	unsigned	rx_nbits:3;

include/uapi/linux/spi/spi.h

+/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+#ifndef _UAPI_SPI_H
+#define _UAPI_SPI_H
+
+#include <linux/const.h>
+
+#define	SPI_CPHA		_BITUL(0)	/* clock phase */
+#define	SPI_CPOL		_BITUL(1)	/* clock polarity */
+
+#define	SPI_MODE_0		(0|0)		/* (original MicroWire) */
+#define	SPI_MODE_1		(0|SPI_CPHA)
+#define	SPI_MODE_2		(SPI_CPOL|0)
+#define	SPI_MODE_3		(SPI_CPOL|SPI_CPHA)
+#define	SPI_MODE_X_MASK		(SPI_CPOL|SPI_CPHA)
+
+#define	SPI_CS_HIGH		_BITUL(2)	/* chipselect active high? */
+#define	SPI_LSB_FIRST		_BITUL(3)	/* per-word bits-on-wire */
+#define	SPI_3WIRE		_BITUL(4)	/* SI/SO signals shared */
+#define	SPI_LOOP		_BITUL(5)	/* loopback mode */
+#define	SPI_NO_CS		_BITUL(6)	/* 1 dev/bus, no chipselect */
+#define	SPI_READY		_BITUL(7)	/* slave pulls low to pause */
+#define	SPI_TX_DUAL		_BITUL(8)	/* transmit with 2 wires */
+#define	SPI_TX_QUAD		_BITUL(9)	/* transmit with 4 wires */
+#define	SPI_RX_DUAL		_BITUL(10)	/* receive with 2 wires */
+#define	SPI_RX_QUAD		_BITUL(11)	/* receive with 4 wires */
+#define	SPI_CS_WORD		_BITUL(12)	/* toggle cs after each word */
+#define	SPI_TX_OCTAL		_BITUL(13)	/* transmit with 8 wires */
+#define	SPI_RX_OCTAL		_BITUL(14)	/* receive with 8 wires */
+#define	SPI_3WIRE_HIZ		_BITUL(15)	/* high impedance turnaround */
+
+/*
+ * All the bits defined above should be covered by SPI_MODE_USER_MASK.
+ * The SPI_MODE_USER_MASK has the SPI_MODE_KERNEL_MASK counterpart in
+ * 'include/linux/spi/spi.h'. The bits defined here are from bit 0 upwards
+ * while in SPI_MODE_KERNEL_MASK they are from the other end downwards.
+ * These bits must not overlap. A static assert check should make sure of that.
+ * If adding extra bits, make sure to increase the bit index below as well.
+ */
+#define SPI_MODE_USER_MASK	(_BITUL(16) - 1)
+
+#endif /* _UAPI_SPI_H */

include/uapi/linux/spi/spidev.h

@@ -25,35 +25,7 @@
 
 #include <linux/types.h>
 #include <linux/ioctl.h>
-
-/* User space versions of kernel symbols for SPI clocking modes,
- * matching <linux/spi/spi.h>
- */
-
-#define SPI_CPHA		0x01
-#define SPI_CPOL		0x02
-
-#define SPI_MODE_0		(0|0)
-#define SPI_MODE_1		(0|SPI_CPHA)
-#define SPI_MODE_2		(SPI_CPOL|0)
-#define SPI_MODE_3		(SPI_CPOL|SPI_CPHA)
-
-#define SPI_CS_HIGH		0x04
-#define SPI_LSB_FIRST		0x08
-#define SPI_3WIRE		0x10
-#define SPI_LOOP		0x20
-#define SPI_NO_CS		0x40
-#define SPI_READY		0x80
-#define SPI_TX_DUAL		0x100
-#define SPI_TX_QUAD		0x200
-#define SPI_RX_DUAL		0x400
-#define SPI_RX_QUAD		0x800
-#define SPI_CS_WORD		0x1000
-#define SPI_TX_OCTAL		0x2000
-#define SPI_RX_OCTAL		0x4000
-#define SPI_3WIRE_HIZ		0x8000
-
-/*---------------------------------------------------------------------------*/
+#include <linux/spi/spi.h>
 
 /* IOCTL commands */