Merge tag 'spi-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "This has mostly been a quiet release for the SPI subsystem, almost all
  cleanups and fixes to existing drivers.

  A couple of changes that stand out:

   - Cleanups and support for version specific features in the
     DesignWare controller.

   - Removal of support for Netlogic devices from the XLP driver, the
     platform had previously been removed by MIPS so the support
     couldn't be used.

   - Conversion of several DT bindings to YAML format"

* tag 'spi-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (53 commits)
  spi: don't include ptp_clock_kernel.h in spi.h
  spi: spi-meson-spifc: Add missing pm_runtime_disable() in meson_spifc_probe
  spi: atmel: Fix typo
  spi: dt-bindings: mediatek,spi-mtk-nor: Fix example 'interrupts' property
  spi: qcom: geni: handle timeout for gpi mode
  spi: qcom: geni: set the error code for gpi transfer
  spi: spi-mux: Add reference to spi-peripheral-props.yaml schema
  spi: ar934x: fix transfer size
  spi: pxa2xx: Propagate firmware node
  spi: dw: Propagate firmware node
  spi: dln2: Propagate firmware node
  spi: ar934x: fix transfer and word delays
  spi: uniphier: Fix a bug that doesn't point to private data correctly
  spi: spi-mtk-nor: add new clock name 'axi' for spi nor
  spi: atmel,quadspi: Define sama7g5 QSPI
  spi: atmel,quadspi: Convert to json-schema
  spi: Fix incorrect cs_setup delay handling
  dt-bindings: mtd: spi-nor: Add a reference to spi-peripheral-props.yaml
  spi: dt-bindings: cdns,qspi-nor: Move peripheral-specific properties out
  spi: dt-bindings: add schema listing peripheral-specific properties
  ...

Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml

@@ -11,6 +11,7 @@ maintainers:
 
 allOf:
   - $ref: "mtd.yaml#"
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
 
 properties:
   compatible:
@@ -88,7 +89,7 @@ patternProperties:
   "^otp(-[0-9]+)?$":
     type: object
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/spi/atmel,quadspi.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/atmel,quadspi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel Quad Serial Peripheral Interface (QSPI)
+
+maintainers:
+  - Tudor Ambarus <tudor.ambarus@microchip.com>
+
+allOf:
+  - $ref: spi-controller.yaml#
+
+properties:
+  compatible:
+    enum:
+      - atmel,sama5d2-qspi
+      - microchip,sam9x60-qspi
+      - microchip,sama7g5-qspi
+      - microchip,sama7g5-ospi
+
+  reg:
+    items:
+      - description: base registers
+      - description: mapped memory
+
+  reg-names:
+    items:
+      - const: qspi_base
+      - const: qspi_mmap
+
+  clocks:
+    minItems: 1
+    items:
+      - description: peripheral clock
+      - description: system clock or generic clock, if available
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: pclk
+      - enum: [ qspick, gclk ]
+
+  interrupts:
+    maxItems: 1
+
+  dmas:
+    items:
+      - description: tx DMA channel
+      - description: rx DMA channel
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - interrupts
+  - clocks
+  - clock-names
+  - '#address-cells'
+  - '#size-cells'
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/at91.h>
+    spi@f0020000 {
+        compatible = "atmel,sama5d2-qspi";
+        reg = <0xf0020000 0x100>, <0xd0000000 0x8000000>;
+        reg-names = "qspi_base", "qspi_mmap";
+        interrupts = <52 IRQ_TYPE_LEVEL_HIGH 7>;
+        clocks = <&pmc PMC_TYPE_PERIPHERAL 52>;
+        clock-names = "pclk";
+        #address-cells = <1>;
+        #size-cells = <0>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_spi0_default>;
+
+        flash@0 {
+            compatible = "jedec,spi-nor";
+            spi-max-frequency = <50000000>;
+            reg = <0>;
+            spi-rx-bus-width = <4>;
+            spi-tx-bus-width = <4>;
+        };
+    };

Documentation/devicetree/bindings/spi/atmel-quadspi.txt

-* Atmel Quad Serial Peripheral Interface (QSPI)
-
-Required properties:
-- compatible:     Should be one of the following:
-		  - "atmel,sama5d2-qspi"
-		  - "microchip,sam9x60-qspi"
-- reg:            Should contain the locations and lengths of the base registers
-                  and the mapped memory.
-- reg-names:      Should contain the resource reg names:
-                  - qspi_base: configuration register address space
-                  - qspi_mmap: memory mapped address space
-- interrupts:     Should contain the interrupt for the device.
-- clocks:         Should reference the peripheral clock and the QSPI system
-                  clock if available.
-- clock-names:    Should contain "pclk" for the peripheral clock and "qspick"
-                  for the system clock when available.
-- #address-cells: Should be <1>.
-- #size-cells:    Should be <0>.
-
-Example:
-
-spi@f0020000 {
-	compatible = "atmel,sama5d2-qspi";
-	reg = <0xf0020000 0x100>, <0xd0000000 0x8000000>;
-	reg-names = "qspi_base", "qspi_mmap";
-	interrupts = <52 IRQ_TYPE_LEVEL_HIGH 7>;
-	clocks = <&pmc PMC_TYPE_PERIPHERAL 52>;
-	clock-names = "pclk";
-	#address-cells = <1>;
-	#size-cells = <0>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_spi0_default>;
-
-	m25p80@0 {
-		...
-	};
-};

Documentation/devicetree/bindings/spi/cdns,qspi-nor-peripheral-props.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/cdns,qspi-nor-peripheral-props.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Peripheral-specific properties for the Cadence QSPI controller.
+
+description:
+  See spi-peripheral-props.yaml for more info.
+
+maintainers:
+  - Pratyush Yadav <p.yadav@ti.com>
+
+properties:
+  # cdns,qspi-nor.yaml
+  cdns,read-delay:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Delay for read capture logic, in clock cycles.
+
+  cdns,tshsl-ns:
+    description:
+      Delay in nanoseconds for the length that the master mode chip select
+      outputs are de-asserted between transactions.
+
+  cdns,tsd2d-ns:
+    description:
+      Delay in nanoseconds between one chip select being de-activated
+      and the activation of another.
+
+  cdns,tchsh-ns:
+    description:
+      Delay in nanoseconds between last bit of current transaction and
+      deasserting the device chip select (qspi_n_ss_out).
+
+  cdns,tslch-ns:
+    description:
+      Delay in nanoseconds between setting qspi_n_ss_out low and
+      first bit transfer.
+
+additionalProperties: true

Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml

@@ -87,39 +87,6 @@ properties:
     items:
       enum: [ qspi, qspi-ocp ]
 
-# subnode's properties
-patternProperties:
-  "@[0-9a-f]+$":
-    type: object
-    description:
-      Flash device uses the below defined properties in the subnode.
-
-    properties:
-      cdns,read-delay:
-        $ref: /schemas/types.yaml#/definitions/uint32
-        description:
-          Delay for read capture logic, in clock cycles.
-
-      cdns,tshsl-ns:
-        description:
-          Delay in nanoseconds for the length that the master mode chip select
-          outputs are de-asserted between transactions.
-
-      cdns,tsd2d-ns:
-        description:
-          Delay in nanoseconds between one chip select being de-activated
-          and the activation of another.
-
-      cdns,tchsh-ns:
-        description:
-          Delay in nanoseconds between last bit of current transaction and
-          deasserting the device chip select (qspi_n_ss_out).
-
-      cdns,tslch-ns:
-        description:
-          Delay in nanoseconds between setting qspi_n_ss_out low and
-          first bit transfer.
-
 required:
   - compatible
   - reg

Documentation/devicetree/bindings/spi/mediatek,spi-mtk-nor.yaml

@@ -43,14 +43,19 @@ properties:
     maxItems: 1
 
   clocks:
+    minItems: 2
     items:
       - description: clock used for spi bus
       - description: clock used for controller
+      - description: clock used for nor dma bus. this depends on hardware
+                     design, so this is optional.
 
   clock-names:
+    minItems: 2
     items:
       - const: spi
       - const: sf
+      - const: axi
 
 required:
   - compatible
@@ -72,7 +77,7 @@ examples:
       nor_flash: spi@1100d000 {
         compatible = "mediatek,mt8173-nor";
         reg = <0 0x1100d000 0 0xe0>;
-        interrupts = <&spi_flash_irq>;
+        interrupts = <1>;
         clocks = <&pericfg CLK_PERI_SPI>, <&topckgen CLK_TOP_SPINFI_IFR_SEL>;
         clock-names = "spi", "sf";
         #address-cells = <1>;
@@ -84,4 +89,3 @@ examples:
         };
       };
     };
-

Documentation/devicetree/bindings/spi/renesas,rspi.yaml

@@ -21,7 +21,8 @@ properties:
           - enum:
               - renesas,rspi-r7s72100  # RZ/A1H
               - renesas,rspi-r7s9210   # RZ/A2
-          - const: renesas,rspi-rz     # RZ/A
+              - renesas,r9a07g044-rspi # RZ/G2{L,LC}
+          - const: renesas,rspi-rz     # RZ/A and RZ/G2{L,LC}
 
       - items:
           - enum:
@@ -122,6 +123,7 @@ allOf:
           contains:
             enum:
               - renesas,qspi
+              - renesas,r9a07g044-rspi
     then:
       required:
         - resets

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

@@ -94,73 +94,8 @@ patternProperties:
   "^.*@[0-9a-f]+$":
     type: object
 
-    properties:
-      compatible:
-        description:
-          Compatible of the SPI device.
-
-      reg:
-        minItems: 1
-        maxItems: 256
-        items:
-          minimum: 0
-          maximum: 256
-        description:
-          Chip select used by the device.
-
-      spi-3wire:
-        $ref: /schemas/types.yaml#/definitions/flag
-        description:
-          The device requires 3-wire mode.
-
-      spi-cpha:
-        $ref: /schemas/types.yaml#/definitions/flag
-        description:
-          The device requires shifted clock phase (CPHA) mode.
-
-      spi-cpol:
-        $ref: /schemas/types.yaml#/definitions/flag
-        description:
-          The device requires inverse clock polarity (CPOL) mode.
-
-      spi-cs-high:
-        $ref: /schemas/types.yaml#/definitions/flag
-        description:
-          The device requires the chip select active high.
-
-      spi-lsb-first:
-        $ref: /schemas/types.yaml#/definitions/flag
-        description:
-          The device requires the LSB first mode.
-
-      spi-max-frequency:
-        $ref: /schemas/types.yaml#/definitions/uint32
-        description:
-          Maximum SPI clocking speed of the device in Hz.
-
-      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: [0, 1, 2, 4, 8]
-        default: 1
-
-      spi-rx-delay-us:
-        description:
-          Delay, in microseconds, after a read transfer.
-
-      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: [0, 1, 2, 4, 8]
-        default: 1
-
-      spi-tx-delay-us:
-        description:
-          Delay, in microseconds, after a write transfer.
+    allOf:
+      - $ref: spi-peripheral-props.yaml
 
     required:
       - compatible

Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml

@@ -14,10 +14,13 @@ allOf:
 
 properties:
   compatible:
-    enum:
-      - fsl,imx7ulp-spi
-      - fsl,imx8qxp-spi
-
+    oneOf:
+      - enum:
+          - fsl,imx7ulp-spi
+          - fsl,imx8qxp-spi
+      - items:
+          - const: fsl,imx8ulp-spi
+          - const: fsl,imx7ulp-spi
   reg:
     maxItems: 1
 

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

@@ -31,6 +31,7 @@ description: |
 
 allOf:
   - $ref: "/schemas/spi/spi-controller.yaml#"
+  - $ref: "/schemas/spi/spi-peripheral-props.yaml#"
 
 maintainers:
   - Chris Packham <chris.packham@alliedtelesis.co.nz>

Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/spi-peripheral-props.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Peripheral-specific properties for a SPI bus.
+
+description:
+  Many SPI controllers need to add properties to peripheral devices. They could
+  be common properties like spi-max-frequency, spi-cpha, etc. or they could be
+  controller specific like delay in clock or data lines, etc. These properties
+  need to be defined in the peripheral node because they are per-peripheral and
+  there can be multiple peripherals attached to a controller. All those
+  properties are listed here. The controller specific properties should go in
+  their own separate schema that should be referenced from here.
+
+maintainers:
+  - Pratyush Yadav <p.yadav@ti.com>
+
+properties:
+  reg:
+    minItems: 1
+    maxItems: 256
+    items:
+      minimum: 0
+      maximum: 256
+    description:
+      Chip select used by the device.
+
+  spi-3wire:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      The device requires 3-wire mode.
+
+  spi-cpha:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      The device requires shifted clock phase (CPHA) mode.
+
+  spi-cpol:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
+
+  spi-cs-high:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      The device requires the chip select active high.
+
+  spi-lsb-first:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      The device requires the LSB first mode.
+
+  spi-max-frequency:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Maximum SPI clocking speed of the device in Hz.
+
+  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: [0, 1, 2, 4, 8]
+    default: 1
+
+  spi-rx-delay-us:
+    description:
+      Delay, in microseconds, after a read transfer.
+
+  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: [0, 1, 2, 4, 8]
+    default: 1
+
+  spi-tx-delay-us:
+    description:
+      Delay, in microseconds, after a write transfer.
+
+# The controller specific properties go here.
+allOf:
+  - $ref: cdns,qspi-nor-peripheral-props.yaml#
+
+additionalProperties: true

Documentation/devicetree/bindings/spi/spi-pl022.yaml

@@ -72,6 +72,9 @@ properties:
       - const: rx
       - const: tx
 
+  resets:
+    maxItems: 1
+
 patternProperties:
   "^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-f]+$":
     type: object

Documentation/spi/pxa2xx.rst

@@ -101,8 +101,7 @@ device. All fields are optional.
 	u8 rx_threshold;
 	u8 dma_burst_size;
 	u32 timeout;
-	u8 enable_loopback;
-	void (*cs_control)(u32 command);
+	int gpio_cs;
   };
 
 The "pxa2xx_spi_chip.tx_threshold" and "pxa2xx_spi_chip.rx_threshold" fields are
@@ -128,16 +127,6 @@ dependent on the SPI bus speed ("spi_board_info.max_speed_hz") and the specific
 slave device.  Please note that the PXA2xx SSP 1 does not support trailing byte
 timeouts and must busy-wait any trailing bytes.
 
-The "pxa2xx_spi_chip.enable_loopback" field is used to place the SSP porting
-into internal loopback mode.  In this mode the SSP controller internally
-connects the SSPTX pin to the SSPRX pin.  This is useful for initial setup
-testing.
-
-The "pxa2xx_spi_chip.cs_control" field is used to point to a board specific
-function for asserting/deasserting a slave device chip select.  If the field is
-NULL, the pxa2xx_spi master controller driver assumes that the SSP port is
-configured to use GPIO or SSPFRM instead.
-
 NOTE: the SPI driver cannot control the chip select if SSPFRM is used, so the
 chipselect is dropped after each spi_transfer.  Most devices need chip select
 asserted around the complete message. Use SSPFRM as a GPIO (through a descriptor)
@@ -152,30 +141,12 @@ field. Below is a sample configuration using the PXA255 NSSP.
 
 ::
 
-  /* Chip Select control for the CS8415A SPI slave device */
-  static void cs8415a_cs_control(u32 command)
-  {
-	if (command & PXA2XX_CS_ASSERT)
-		GPCR(2) = GPIO_bit(2);
-	else
-		GPSR(2) = GPIO_bit(2);
-  }
-
-  /* Chip Select control for the CS8405A SPI slave device */
-  static void cs8405a_cs_control(u32 command)
-  {
-	if (command & PXA2XX_CS_ASSERT)
-		GPCR(3) = GPIO_bit(3);
-	else
-		GPSR(3) = GPIO_bit(3);
-  }
-
   static struct pxa2xx_spi_chip cs8415a_chip_info = {
 	.tx_threshold = 8, /* SSP hardward FIFO threshold */
 	.rx_threshold = 8, /* SSP hardward FIFO threshold */
 	.dma_burst_size = 8, /* Byte wide transfers used so 8 byte bursts */
 	.timeout = 235, /* See Intel documentation */
-	.cs_control = cs8415a_cs_control, /* Use external chip select */
+	.gpio_cs = 2, /* Use external chip select */
   };
 
   static struct pxa2xx_spi_chip cs8405a_chip_info = {
@@ -183,7 +154,7 @@ field. Below is a sample configuration using the PXA255 NSSP.
 	.rx_threshold = 8, /* SSP hardward FIFO threshold */
 	.dma_burst_size = 8, /* Byte wide transfers used so 8 byte bursts */
 	.timeout = 235, /* See Intel documentation */
-	.cs_control = cs8405a_cs_control, /* Use external chip select */
+	.gpio_cs = 3, /* Use external chip select */
   };
 
   static struct spi_board_info streetracer_spi_board_info[] __initdata = {

Documentation/spi/spidev.rst

@@ -29,21 +29,49 @@ of the driver stack) that are not accessible to userspace.
 
 DEVICE CREATION, DRIVER BINDING
 ===============================
-The simplest way to arrange to use this driver is to just list it in the
-spi_board_info for a device as the driver it should use:  the "modalias"
-entry is "spidev", matching the name of the driver exposing this API.
-Set up the other device characteristics (bits per word, SPI clocking,
-chipselect polarity, etc) as usual, so you won't always need to override
-them later.
-
-(Sysfs also supports userspace driven binding/unbinding of drivers to
-devices.  That mechanism might be supported here in the future.)
-
-When you do that, the sysfs node for the SPI device will include a child
-device node with a "dev" attribute that will be understood by udev or mdev.
-(Larger systems will have "udev".  Smaller ones may configure "mdev" into
-busybox; it's less featureful, but often enough.)  For a SPI device with
-chipselect C on bus B, you should see:
+
+The spidev driver contains lists of SPI devices that are supported for
+the different hardware topology representations.
+
+The following are the SPI device tables supported by the spidev driver:
+
+    - struct spi_device_id spidev_spi_ids[]: list of devices that can be
+      bound when these are defined using a struct spi_board_info with a
+      .modalias field matching one of the entries in the table.
+
+    - struct of_device_id spidev_dt_ids[]: list of devices that can be
+      bound when these are defined using a Device Tree node that has a
+      compatible string matching one of the entries in the table.
+
+    - struct acpi_device_id spidev_acpi_ids[]: list of devices that can
+      be bound when these are defined using a ACPI device object with a
+      _HID matching one of the entries in the table.
+
+You are encouraged to add an entry for your SPI device name to relevant
+tables, if these don't already have an entry for the device. To do that,
+post a patch for spidev to the linux-spi@vger.kernel.org mailing list.
+
+It used to be supported to define an SPI device using the "spidev" name.
+For example, as .modalias = "spidev" or compatible = "spidev".  But this
+is no longer supported by the Linux kernel and instead a real SPI device
+name as listed in one of the tables must be used.
+
+Not having a real SPI device name will lead to an error being printed and
+the spidev driver failing to probe.
+
+Sysfs also supports userspace driven binding/unbinding of drivers to
+devices that do not bind automatically using one of the tables above.
+To make the spidev driver bind to such a device, use the following:
+
+    echo spidev > /sys/bus/spi/devices/spiB.C/driver_override
+    echo spiB.C > /sys/bus/spi/drivers/spidev/bind
+
+When the spidev driver is bound to a SPI device, the sysfs node for the
+device will include a child device node with a "dev" attribute that will
+be understood by udev or mdev (udev replacement from BusyBox; it's less
+featureful, but often enough).
+
+For a SPI device with chipselect C on bus B, you should see:
 
     /dev/spidevB.C ...
 	character special device, major number 153 with

arch/arm/mach-pxa/lubbock.c

@@ -211,16 +211,17 @@ static struct ads7846_platform_data ads_info = {
 	// .y_plate_ohms		= 500,	/* GUESS! */
 };
 
-static void ads7846_cs(u32 command)
-{
-	static const unsigned	TS_nCS = 1 << 11;
-	lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
-}
+static struct gpiod_lookup_table ads7846_cs_gpios = {
+	.dev_id		= "ads7846",
+	.table		= {
+		GPIO_LOOKUP("lubbock", 11, "cs", GPIO_ACTIVE_LOW),
+		{}
+	},
+};
 
 static struct pxa2xx_spi_chip ads_hw = {
 	.tx_threshold		= 1,
 	.rx_threshold		= 2,
-	.cs_control		= ads7846_cs,
 };
 
 static struct spi_board_info spi_board_info[] __initdata = { {
@@ -512,6 +513,8 @@ static void __init lubbock_init(void)
 	lubbock_flash_data[flashboot].name = "boot-rom";
 	(void) platform_add_devices(devices, ARRAY_SIZE(devices));
 
+	gpiod_add_lookup_table(&ads7846_cs_gpios);
+
 	pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
 	spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 }

arch/arm/mach-pxa/stargate2.c

@@ -347,7 +347,7 @@ static struct pxa2xx_spi_controller pxa_ssp_master_2_info = {
 };
 
 /* An upcoming kernel change will scrap SFRM usage so these
- * drivers have been moved to use gpio's via cs_control */
+ * drivers have been moved to use GPIOs */
 static struct pxa2xx_spi_chip staccel_chip_info = {
 	.tx_threshold = 8,
 	.rx_threshold = 8,

drivers/spi/Kconfig

@@ -974,14 +974,13 @@ config SPI_XILINX
 	  Or for the DS570, see "XPS Serial Peripheral Interface (SPI) (v2.00b)"
 
 config SPI_XLP
-	tristate "Netlogic XLP SPI controller driver"
-	depends on CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST
+	tristate "Cavium ThunderX2 SPI controller driver"
+	depends on ARCH_THUNDER2 || COMPILE_TEST
 	help
-	  Enable support for the SPI controller on the Netlogic XLP SoCs.
-	  Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX, XLP9XX
-	  and XLP5XX.
+	  Enable support for the SPI controller on the Cavium ThunderX2.
+	  (Originally on Netlogic XLP SoCs.)
 
-	  If you have a Netlogic XLP platform say Y here.
+	  If you have a Cavium ThunderX2 platform say Y here.
 	  If unsure, say N.
 
 config SPI_XTENSA_XTFPGA

drivers/spi/spi-ar934x.c

@@ -82,7 +82,7 @@ static int ar934x_spi_transfer_one_message(struct spi_controller *master,
 	struct spi_device *spi = m->spi;
 	unsigned long trx_done, trx_cur;
 	int stat = 0;
-	u8 term = 0;
+	u8 bpw, term = 0;
 	int div, i;
 	u32 reg;
 	const u8 *tx_buf;
@@ -90,6 +90,11 @@ static int ar934x_spi_transfer_one_message(struct spi_controller *master,
 
 	m->actual_length = 0;
 	list_for_each_entry(t, &m->transfers, transfer_list) {
+		if (t->bits_per_word >= 8 && t->bits_per_word < 32)
+			bpw = t->bits_per_word >> 3;
+		else
+			bpw = 4;
+
 		if (t->speed_hz)
 			div = ar934x_spi_clk_div(sp, t->speed_hz);
 		else
@@ -105,10 +110,10 @@ static int ar934x_spi_transfer_one_message(struct spi_controller *master,
 		iowrite32(reg, sp->base + AR934X_SPI_REG_CTRL);
 		iowrite32(0, sp->base + AR934X_SPI_DATAOUT);
 
-		for (trx_done = 0; trx_done < t->len; trx_done += 4) {
+		for (trx_done = 0; trx_done < t->len; trx_done += bpw) {
 			trx_cur = t->len - trx_done;
-			if (trx_cur > 4)
-				trx_cur = 4;
+			if (trx_cur > bpw)
+				trx_cur = bpw;
 			else if (list_is_last(&t->transfer_list, &m->transfers))
 				term = 1;
 
@@ -137,8 +142,10 @@ static int ar934x_spi_transfer_one_message(struct spi_controller *master,
 					reg >>= 8;
 				}
 			}
+			spi_delay_exec(&t->word_delay, t);
 		}
 		m->actual_length += t->len;
+		spi_transfer_delay_exec(t);
 	}
 
 msg_done:
@@ -191,7 +198,8 @@ static int ar934x_spi_probe(struct platform_device *pdev)
 	ctlr->mode_bits = SPI_LSB_FIRST;
 	ctlr->setup = ar934x_spi_setup;
 	ctlr->transfer_one_message = ar934x_spi_transfer_one_message;
-	ctlr->bits_per_word_mask = SPI_BPW_MASK(8);
+	ctlr->bits_per_word_mask = SPI_BPW_MASK(32) | SPI_BPW_MASK(24) |
+				   SPI_BPW_MASK(16) | SPI_BPW_MASK(8);
 	ctlr->dev.of_node = pdev->dev.of_node;
 	ctlr->num_chipselect = 3;
 

drivers/spi/spi-atmel.c

@@ -433,26 +433,25 @@ static bool atmel_spi_can_dma(struct spi_master *master,
 
 }
 
-static int atmel_spi_dma_slave_config(struct atmel_spi *as,
-				struct dma_slave_config *slave_config,
-				u8 bits_per_word)
+static int atmel_spi_dma_slave_config(struct atmel_spi *as, u8 bits_per_word)
 {
 	struct spi_master *master = platform_get_drvdata(as->pdev);
+	struct dma_slave_config	slave_config;
 	int err = 0;
 
 	if (bits_per_word > 8) {
-		slave_config->dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
-		slave_config->src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+		slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+		slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
 	} else {
-		slave_config->dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
-		slave_config->src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
+		slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
+		slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
 	}
 
-	slave_config->dst_addr = (dma_addr_t)as->phybase + SPI_TDR;
-	slave_config->src_addr = (dma_addr_t)as->phybase + SPI_RDR;
-	slave_config->src_maxburst = 1;
-	slave_config->dst_maxburst = 1;
-	slave_config->device_fc = false;
+	slave_config.dst_addr = (dma_addr_t)as->phybase + SPI_TDR;
+	slave_config.src_addr = (dma_addr_t)as->phybase + SPI_RDR;
+	slave_config.src_maxburst = 1;
+	slave_config.dst_maxburst = 1;
+	slave_config.device_fc = false;
 
 	/*
 	 * This driver uses fixed peripheral select mode (PS bit set to '0' in
@@ -464,12 +463,11 @@ static int atmel_spi_dma_slave_config(struct atmel_spi *as,
 	 * However, the first data has to be written into the lowest 16 bits and
 	 * the second data into the highest 16 bits of the Transmit
 	 * Data Register. For 8bit data (the most frequent case), it would
-	 * require to rework tx_buf so each data would actualy fit 16 bits.
+	 * require to rework tx_buf so each data would actually fit 16 bits.
 	 * So we'd rather write only one data at the time. Hence the transmit
 	 * path works the same whether FIFOs are available (and enabled) or not.
 	 */
-	slave_config->direction = DMA_MEM_TO_DEV;
-	if (dmaengine_slave_config(master->dma_tx, slave_config)) {
+	if (dmaengine_slave_config(master->dma_tx, &slave_config)) {
 		dev_err(&as->pdev->dev,
 			"failed to configure tx dma channel\n");
 		err = -EINVAL;
@@ -483,8 +481,7 @@ static int atmel_spi_dma_slave_config(struct atmel_spi *as,
 	 * So the receive path works the same whether FIFOs are available (and
 	 * enabled) or not.
 	 */
-	slave_config->direction = DMA_DEV_TO_MEM;
-	if (dmaengine_slave_config(master->dma_rx, slave_config)) {
+	if (dmaengine_slave_config(master->dma_rx, &slave_config)) {
 		dev_err(&as->pdev->dev,
 			"failed to configure rx dma channel\n");
 		err = -EINVAL;
@@ -496,7 +493,6 @@ static int atmel_spi_dma_slave_config(struct atmel_spi *as,
 static int atmel_spi_configure_dma(struct spi_master *master,
 				   struct atmel_spi *as)
 {
-	struct dma_slave_config	slave_config;
 	struct device *dev = &as->pdev->dev;
 	int err;
 
@@ -518,7 +514,7 @@ static int atmel_spi_configure_dma(struct spi_master *master,
 		goto error;
 	}
 
-	err = atmel_spi_dma_slave_config(as, &slave_config, 8);
+	err = atmel_spi_dma_slave_config(as, 8);
 	if (err)
 		goto error;
 
@@ -700,7 +696,6 @@ static int atmel_spi_next_xfer_dma_submit(struct spi_master *master,
 	struct dma_chan		*txchan = master->dma_tx;
 	struct dma_async_tx_descriptor *rxdesc;
 	struct dma_async_tx_descriptor *txdesc;
-	struct dma_slave_config	slave_config;
 	dma_cookie_t		cookie;
 
 	dev_vdbg(master->dev.parent, "atmel_spi_next_xfer_dma_submit\n");
@@ -712,8 +707,7 @@ static int atmel_spi_next_xfer_dma_submit(struct spi_master *master,
 
 	*plen = xfer->len;
 
-	if (atmel_spi_dma_slave_config(as, &slave_config,
-				       xfer->bits_per_word))
+	if (atmel_spi_dma_slave_config(as, xfer->bits_per_word))
 		goto err_exit;
 
 	/* Send both scatterlists */

drivers/spi/spi-bcm-qspi.c

@@ -287,6 +287,18 @@ static inline int bcm_qspi_spbr_min(struct bcm_qspi *qspi)
 		return 8;
 }
 
+static u32 bcm_qspi_calc_spbr(u32 clk_speed_hz,
+			      const struct bcm_qspi_parms *xp)
+{
+	u32 spbr = 0;
+
+	/* SPBR = System Clock/(2 * SCK Baud Rate) */
+	if (xp->speed_hz)
+		spbr = clk_speed_hz / (xp->speed_hz * 2);
+
+	return spbr;
+}
+
 /* Read qspi controller register*/
 static inline u32 bcm_qspi_read(struct bcm_qspi *qspi, enum base_type type,
 				unsigned int offset)
@@ -586,12 +598,24 @@ static void bcm_qspi_chip_select(struct bcm_qspi *qspi, int cs)
 	qspi->curr_cs = cs;
 }
 
+static bool bcmspi_parms_did_change(const struct bcm_qspi_parms * const cur,
+				    const struct bcm_qspi_parms * const prev)
+{
+	return (cur->speed_hz != prev->speed_hz) ||
+		(cur->mode != prev->mode) ||
+		(cur->bits_per_word != prev->bits_per_word);
+}
+
+
 /* MSPI helpers */
 static void bcm_qspi_hw_set_parms(struct bcm_qspi *qspi,
 				  const struct bcm_qspi_parms *xp)
 {
 	u32 spcr, spbr = 0;
 
+	if (!bcmspi_parms_did_change(xp, &qspi->last_parms))
+		return;
+
 	if (!qspi->mspi_maj_rev)
 		/* legacy controller */
 		spcr = MSPI_MASTER_BIT;
@@ -621,9 +645,17 @@ static void bcm_qspi_hw_set_parms(struct bcm_qspi *qspi,
 			spcr |= MSPI_SPCR3_HALFDUPLEX |  MSPI_SPCR3_HDOUTTYPE;
 
 		if (bcm_qspi_has_sysclk_108(qspi)) {
-			/* SYSCLK_108 */
-			spcr |= MSPI_SPCR3_SYSCLKSEL_108;
-			qspi->base_clk = MSPI_BASE_FREQ * 4;
+			/* check requested baud rate before moving to 108Mhz */
+			spbr = bcm_qspi_calc_spbr(MSPI_BASE_FREQ * 4, xp);
+			if (spbr > QSPI_SPBR_MAX) {
+				/* use SYSCLK_27Mhz for slower baud rates */
+				spcr &= ~MSPI_SPCR3_SYSCLKSEL_MASK;
+				qspi->base_clk = MSPI_BASE_FREQ;
+			} else {
+				/* SYSCLK_108Mhz */
+				spcr |= MSPI_SPCR3_SYSCLKSEL_108;
+				qspi->base_clk = MSPI_BASE_FREQ * 4;
+			}
 		}
 
 		if (xp->bits_per_word > 16) {
@@ -649,9 +681,9 @@ static void bcm_qspi_hw_set_parms(struct bcm_qspi *qspi,
 		bcm_qspi_write(qspi, MSPI, MSPI_SPCR3, spcr);
 	}
 
-	if (xp->speed_hz)
-		spbr = qspi->base_clk / (2 * xp->speed_hz);
-
+	/* SCK Baud Rate = System Clock/(2 * SPBR) */
+	qspi->max_speed_hz = qspi->base_clk / (bcm_qspi_spbr_min(qspi) * 2);
+	spbr = bcm_qspi_calc_spbr(qspi->base_clk, xp);
 	spbr = clamp_val(spbr, bcm_qspi_spbr_min(qspi), QSPI_SPBR_MAX);
 	bcm_qspi_write(qspi, MSPI, MSPI_SPCR0_LSB, spbr);
 

drivers/spi/spi-dln2.c

@@ -8,6 +8,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/mfd/dln2.h>
 #include <linux/spi/spi.h>
 #include <linux/pm_runtime.h>
@@ -688,6 +689,8 @@ static int dln2_spi_probe(struct platform_device *pdev)
 	if (!master)
 		return -ENOMEM;
 
+	device_set_node(&master->dev, dev_fwnode(dev));
+
 	platform_set_drvdata(pdev, master);
 
 	dln2 = spi_master_get_devdata(master);
@@ -699,7 +702,6 @@ static int dln2_spi_probe(struct platform_device *pdev)
 	}
 
 	dln2->master = master;
-	dln2->master->dev.of_node = dev->of_node;
 	dln2->pdev = pdev;
 	dln2->port = pdata->port;
 	/* cs/mode can never be 0xff, so the first transfer will set them */

drivers/spi/spi-dw-bt1.c

@@ -123,7 +123,7 @@ static ssize_t dw_spi_bt1_dirmap_read(struct spi_mem_dirmap_desc *desc,
 	len = min_t(size_t, len, dwsbt1->map_len - offs);
 
 	/* Collect the controller configuration required by the operation */
-	cfg.tmode = SPI_TMOD_EPROMREAD;
+	cfg.tmode = DW_SPI_CTRLR0_TMOD_EPROMREAD;
 	cfg.dfs = 8;
 	cfg.ndf = 4;
 	cfg.freq = mem->spi->max_speed_hz;
@@ -131,13 +131,13 @@ static ssize_t dw_spi_bt1_dirmap_read(struct spi_mem_dirmap_desc *desc,
 	/* Make sure the corresponding CS is de-asserted on transmission */
 	dw_spi_set_cs(mem->spi, false);
 
-	spi_enable_chip(dws, 0);
+	dw_spi_enable_chip(dws, 0);
 
 	dw_spi_update_config(dws, mem->spi, &cfg);
 
-	spi_umask_intr(dws, SPI_INT_RXFI);
+	dw_spi_umask_intr(dws, DW_SPI_INT_RXFI);
 
-	spi_enable_chip(dws, 1);
+	dw_spi_enable_chip(dws, 1);
 
 	/*
 	 * Enable the transparent mode of the System Boot Controller.
@@ -339,3 +339,4 @@ module_platform_driver(dw_spi_bt1_driver);
 MODULE_AUTHOR("Serge Semin <Sergey.Semin@baikalelectronics.ru>");
 MODULE_DESCRIPTION("Baikal-T1 System Boot SPI Controller driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(SPI_DW_CORE);

drivers/spi/spi-dw-core.c

@@ -5,6 +5,7 @@
  * Copyright (c) 2009, Intel Corporation.
  */
 
+#include <linux/bitfield.h>
 #include <linux/dma-mapping.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
@@ -24,7 +25,7 @@
 #endif
 
 /* Slave spi_device related */
-struct chip_data {
+struct dw_spi_chip_data {
 	u32 cr0;
 	u32 rx_sample_dly;	/* RX sample delay */
 };
@@ -106,10 +107,10 @@ void dw_spi_set_cs(struct spi_device *spi, bool enable)
 	else
 		dw_writel(dws, DW_SPI_SER, 0);
 }
-EXPORT_SYMBOL_GPL(dw_spi_set_cs);
+EXPORT_SYMBOL_NS_GPL(dw_spi_set_cs, SPI_DW_CORE);
 
 /* Return the max entries we can fill into tx fifo */
-static inline u32 tx_max(struct dw_spi *dws)
+static inline u32 dw_spi_tx_max(struct dw_spi *dws)
 {
 	u32 tx_room, rxtx_gap;
 
@@ -129,14 +130,14 @@ static inline u32 tx_max(struct dw_spi *dws)
 }
 
 /* Return the max entries we should read out of rx fifo */
-static inline u32 rx_max(struct dw_spi *dws)
+static inline u32 dw_spi_rx_max(struct dw_spi *dws)
 {
 	return min_t(u32, dws->rx_len, dw_readl(dws, DW_SPI_RXFLR));
 }
 
 static void dw_writer(struct dw_spi *dws)
 {
-	u32 max = tx_max(dws);
+	u32 max = dw_spi_tx_max(dws);
 	u32 txw = 0;
 
 	while (max--) {
@@ -157,7 +158,7 @@ static void dw_writer(struct dw_spi *dws)
 
 static void dw_reader(struct dw_spi *dws)
 {
-	u32 max = rx_max(dws);
+	u32 max = dw_spi_rx_max(dws);
 	u32 rxw;
 
 	while (max--) {
@@ -186,31 +187,31 @@ int dw_spi_check_status(struct dw_spi *dws, bool raw)
 	else
 		irq_status = dw_readl(dws, DW_SPI_ISR);
 
-	if (irq_status & SPI_INT_RXOI) {
+	if (irq_status & DW_SPI_INT_RXOI) {
 		dev_err(&dws->master->dev, "RX FIFO overflow detected\n");
 		ret = -EIO;
 	}
 
-	if (irq_status & SPI_INT_RXUI) {
+	if (irq_status & DW_SPI_INT_RXUI) {
 		dev_err(&dws->master->dev, "RX FIFO underflow detected\n");
 		ret = -EIO;
 	}
 
-	if (irq_status & SPI_INT_TXOI) {
+	if (irq_status & DW_SPI_INT_TXOI) {
 		dev_err(&dws->master->dev, "TX FIFO overflow detected\n");
 		ret = -EIO;
 	}
 
 	/* Generically handle the erroneous situation */
 	if (ret) {
-		spi_reset_chip(dws);
+		dw_spi_reset_chip(dws);
 		if (dws->master->cur_msg)
 			dws->master->cur_msg->status = ret;
 	}
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(dw_spi_check_status);
+EXPORT_SYMBOL_NS_GPL(dw_spi_check_status, SPI_DW_CORE);
 
 static irqreturn_t dw_spi_transfer_handler(struct dw_spi *dws)
 {
@@ -230,7 +231,7 @@ static irqreturn_t dw_spi_transfer_handler(struct dw_spi *dws)
 	 */
 	dw_reader(dws);
 	if (!dws->rx_len) {
-		spi_mask_intr(dws, 0xff);
+		dw_spi_mask_intr(dws, 0xff);
 		spi_finalize_current_transfer(dws->master);
 	} else if (dws->rx_len <= dw_readl(dws, DW_SPI_RXFTLR)) {
 		dw_writel(dws, DW_SPI_RXFTLR, dws->rx_len - 1);
@@ -241,10 +242,10 @@ static irqreturn_t dw_spi_transfer_handler(struct dw_spi *dws)
 	 * disabled after the data transmission is finished so not to
 	 * have the TXE IRQ flood at the final stage of the transfer.
 	 */
-	if (irq_status & SPI_INT_TXEI) {
+	if (irq_status & DW_SPI_INT_TXEI) {
 		dw_writer(dws);
 		if (!dws->tx_len)
-			spi_mask_intr(dws, SPI_INT_TXEI);
+			dw_spi_mask_intr(dws, DW_SPI_INT_TXEI);
 	}
 
 	return IRQ_HANDLED;
@@ -254,13 +255,13 @@ static irqreturn_t dw_spi_irq(int irq, void *dev_id)
 {
 	struct spi_controller *master = dev_id;
 	struct dw_spi *dws = spi_controller_get_devdata(master);
-	u16 irq_status = dw_readl(dws, DW_SPI_ISR) & 0x3f;
+	u16 irq_status = dw_readl(dws, DW_SPI_ISR) & DW_SPI_INT_MASK;
 
 	if (!irq_status)
 		return IRQ_NONE;
 
 	if (!master->cur_msg) {
-		spi_mask_intr(dws, 0xff);
+		dw_spi_mask_intr(dws, 0xff);
 		return IRQ_HANDLED;
 	}
 
@@ -271,37 +272,43 @@ static u32 dw_spi_prepare_cr0(struct dw_spi *dws, struct spi_device *spi)
 {
 	u32 cr0 = 0;
 
-	if (!(dws->caps & DW_SPI_CAP_DWC_SSI)) {
+	if (dw_spi_ip_is(dws, PSSI)) {
 		/* CTRLR0[ 5: 4] Frame Format */
-		cr0 |= SSI_MOTO_SPI << SPI_FRF_OFFSET;
+		cr0 |= FIELD_PREP(DW_PSSI_CTRLR0_FRF_MASK, DW_SPI_CTRLR0_FRF_MOTO_SPI);
 
 		/*
 		 * SPI mode (SCPOL|SCPH)
 		 * CTRLR0[ 6] Serial Clock Phase
 		 * CTRLR0[ 7] Serial Clock Polarity
 		 */
-		cr0 |= ((spi->mode & SPI_CPOL) ? 1 : 0) << SPI_SCOL_OFFSET;
-		cr0 |= ((spi->mode & SPI_CPHA) ? 1 : 0) << SPI_SCPH_OFFSET;
+		if (spi->mode & SPI_CPOL)
+			cr0 |= DW_PSSI_CTRLR0_SCPOL;
+		if (spi->mode & SPI_CPHA)
+			cr0 |= DW_PSSI_CTRLR0_SCPHA;
 
 		/* CTRLR0[11] Shift Register Loop */
-		cr0 |= ((spi->mode & SPI_LOOP) ? 1 : 0) << SPI_SRL_OFFSET;
+		if (spi->mode & SPI_LOOP)
+			cr0 |= DW_PSSI_CTRLR0_SRL;
 	} else {
 		/* CTRLR0[ 7: 6] Frame Format */
-		cr0 |= SSI_MOTO_SPI << DWC_SSI_CTRLR0_FRF_OFFSET;
+		cr0 |= FIELD_PREP(DW_HSSI_CTRLR0_FRF_MASK, DW_SPI_CTRLR0_FRF_MOTO_SPI);
 
 		/*
 		 * SPI mode (SCPOL|SCPH)
 		 * CTRLR0[ 8] Serial Clock Phase
 		 * CTRLR0[ 9] Serial Clock Polarity
 		 */
-		cr0 |= ((spi->mode & SPI_CPOL) ? 1 : 0) << DWC_SSI_CTRLR0_SCPOL_OFFSET;
-		cr0 |= ((spi->mode & SPI_CPHA) ? 1 : 0) << DWC_SSI_CTRLR0_SCPH_OFFSET;
+		if (spi->mode & SPI_CPOL)
+			cr0 |= DW_HSSI_CTRLR0_SCPOL;
+		if (spi->mode & SPI_CPHA)
+			cr0 |= DW_HSSI_CTRLR0_SCPHA;
 
 		/* CTRLR0[13] Shift Register Loop */
-		cr0 |= ((spi->mode & SPI_LOOP) ? 1 : 0) << DWC_SSI_CTRLR0_SRL_OFFSET;
+		if (spi->mode & SPI_LOOP)
+			cr0 |= DW_HSSI_CTRLR0_SRL;
 
 		if (dws->caps & DW_SPI_CAP_KEEMBAY_MST)
-			cr0 |= DWC_SSI_CTRLR0_KEEMBAY_MST;
+			cr0 |= DW_HSSI_CTRLR0_KEEMBAY_MST;
 	}
 
 	return cr0;
@@ -310,7 +317,7 @@ static u32 dw_spi_prepare_cr0(struct dw_spi *dws, struct spi_device *spi)
 void dw_spi_update_config(struct dw_spi *dws, struct spi_device *spi,
 			  struct dw_spi_cfg *cfg)
 {
-	struct chip_data *chip = spi_get_ctldata(spi);
+	struct dw_spi_chip_data *chip = spi_get_ctldata(spi);
 	u32 cr0 = chip->cr0;
 	u32 speed_hz;
 	u16 clk_div;
@@ -318,16 +325,17 @@ void dw_spi_update_config(struct dw_spi *dws, struct spi_device *spi,
 	/* CTRLR0[ 4/3: 0] or CTRLR0[ 20: 16] Data Frame Size */
 	cr0 |= (cfg->dfs - 1) << dws->dfs_offset;
 
-	if (!(dws->caps & DW_SPI_CAP_DWC_SSI))
+	if (dw_spi_ip_is(dws, PSSI))
 		/* CTRLR0[ 9:8] Transfer Mode */
-		cr0 |= cfg->tmode << SPI_TMOD_OFFSET;
+		cr0 |= FIELD_PREP(DW_PSSI_CTRLR0_TMOD_MASK, cfg->tmode);
 	else
 		/* CTRLR0[11:10] Transfer Mode */
-		cr0 |= cfg->tmode << DWC_SSI_CTRLR0_TMOD_OFFSET;
+		cr0 |= FIELD_PREP(DW_HSSI_CTRLR0_TMOD_MASK, cfg->tmode);
 
 	dw_writel(dws, DW_SPI_CTRLR0, cr0);
 
-	if (cfg->tmode == SPI_TMOD_EPROMREAD || cfg->tmode == SPI_TMOD_RO)
+	if (cfg->tmode == DW_SPI_CTRLR0_TMOD_EPROMREAD ||
+	    cfg->tmode == DW_SPI_CTRLR0_TMOD_RO)
 		dw_writel(dws, DW_SPI_CTRLR1, cfg->ndf ? cfg->ndf - 1 : 0);
 
 	/* Note DW APB SSI clock divider doesn't support odd numbers */
@@ -335,7 +343,7 @@ void dw_spi_update_config(struct dw_spi *dws, struct spi_device *spi,
 	speed_hz = dws->max_freq / clk_div;
 
 	if (dws->current_freq != speed_hz) {
-		spi_set_clk(dws, clk_div);
+		dw_spi_set_clk(dws, clk_div);
 		dws->current_freq = speed_hz;
 	}
 
@@ -345,7 +353,7 @@ void dw_spi_update_config(struct dw_spi *dws, struct spi_device *spi,
 		dws->cur_rx_sample_dly = chip->rx_sample_dly;
 	}
 }
-EXPORT_SYMBOL_GPL(dw_spi_update_config);
+EXPORT_SYMBOL_NS_GPL(dw_spi_update_config, SPI_DW_CORE);
 
 static void dw_spi_irq_setup(struct dw_spi *dws)
 {
@@ -363,9 +371,9 @@ static void dw_spi_irq_setup(struct dw_spi *dws)
 
 	dws->transfer_handler = dw_spi_transfer_handler;
 
-	imask = SPI_INT_TXEI | SPI_INT_TXOI | SPI_INT_RXUI | SPI_INT_RXOI |
-		SPI_INT_RXFI;
-	spi_umask_intr(dws, imask);
+	imask = DW_SPI_INT_TXEI | DW_SPI_INT_TXOI |
+		DW_SPI_INT_RXUI | DW_SPI_INT_RXOI | DW_SPI_INT_RXFI;
+	dw_spi_umask_intr(dws, imask);
 }
 
 /*
@@ -405,11 +413,12 @@ static int dw_spi_poll_transfer(struct dw_spi *dws,
 }
 
 static int dw_spi_transfer_one(struct spi_controller *master,
-		struct spi_device *spi, struct spi_transfer *transfer)
+			       struct spi_device *spi,
+			       struct spi_transfer *transfer)
 {
 	struct dw_spi *dws = spi_controller_get_devdata(master);
 	struct dw_spi_cfg cfg = {
-		.tmode = SPI_TMOD_TR,
+		.tmode = DW_SPI_CTRLR0_TMOD_TR,
 		.dfs = transfer->bits_per_word,
 		.freq = transfer->speed_hz,
 	};
@@ -425,7 +434,7 @@ static int dw_spi_transfer_one(struct spi_controller *master,
 	/* Ensure the data above is visible for all CPUs */
 	smp_mb();
 
-	spi_enable_chip(dws, 0);
+	dw_spi_enable_chip(dws, 0);
 
 	dw_spi_update_config(dws, spi, &cfg);
 
@@ -436,7 +445,7 @@ static int dw_spi_transfer_one(struct spi_controller *master,
 		dws->dma_mapped = master->cur_msg_mapped;
 
 	/* For poll mode just disable all interrupts */
-	spi_mask_intr(dws, 0xff);
+	dw_spi_mask_intr(dws, 0xff);
 
 	if (dws->dma_mapped) {
 		ret = dws->dma_ops->dma_setup(dws, transfer);
@@ -444,7 +453,7 @@ static int dw_spi_transfer_one(struct spi_controller *master,
 			return ret;
 	}
 
-	spi_enable_chip(dws, 1);
+	dw_spi_enable_chip(dws, 1);
 
 	if (dws->dma_mapped)
 		return dws->dma_ops->dma_transfer(dws, transfer);
@@ -457,20 +466,20 @@ static int dw_spi_transfer_one(struct spi_controller *master,
 }
 
 static void dw_spi_handle_err(struct spi_controller *master,
-		struct spi_message *msg)
+			      struct spi_message *msg)
 {
 	struct dw_spi *dws = spi_controller_get_devdata(master);
 
 	if (dws->dma_mapped)
 		dws->dma_ops->dma_stop(dws);
 
-	spi_reset_chip(dws);
+	dw_spi_reset_chip(dws);
 }
 
 static int dw_spi_adjust_mem_op_size(struct spi_mem *mem, struct spi_mem_op *op)
 {
 	if (op->data.dir == SPI_MEM_DATA_IN)
-		op->data.nbytes = clamp_val(op->data.nbytes, 0, SPI_NDF_MASK + 1);
+		op->data.nbytes = clamp_val(op->data.nbytes, 0, DW_SPI_NDF_MASK + 1);
 
 	return 0;
 }
@@ -498,7 +507,7 @@ static int dw_spi_init_mem_buf(struct dw_spi *dws, const struct spi_mem_op *op)
 	if (op->data.dir == SPI_MEM_DATA_OUT)
 		len += op->data.nbytes;
 
-	if (len <= SPI_BUF_SIZE) {
+	if (len <= DW_SPI_BUF_SIZE) {
 		out = dws->buf;
 	} else {
 		out = kzalloc(len, GFP_KERNEL);
@@ -512,9 +521,9 @@ static int dw_spi_init_mem_buf(struct dw_spi *dws, const struct spi_mem_op *op)
 	 * single buffer in order to speed the data transmission up.
 	 */
 	for (i = 0; i < op->cmd.nbytes; ++i)
-		out[i] = SPI_GET_BYTE(op->cmd.opcode, op->cmd.nbytes - i - 1);
+		out[i] = DW_SPI_GET_BYTE(op->cmd.opcode, op->cmd.nbytes - i - 1);
 	for (j = 0; j < op->addr.nbytes; ++i, ++j)
-		out[i] = SPI_GET_BYTE(op->addr.val, op->addr.nbytes - j - 1);
+		out[i] = DW_SPI_GET_BYTE(op->addr.val, op->addr.nbytes - j - 1);
 	for (j = 0; j < op->dummy.nbytes; ++i, ++j)
 		out[i] = 0x0;
 
@@ -587,7 +596,7 @@ static int dw_spi_write_then_read(struct dw_spi *dws, struct spi_device *spi)
 		entries = readl_relaxed(dws->regs + DW_SPI_RXFLR);
 		if (!entries) {
 			sts = readl_relaxed(dws->regs + DW_SPI_RISR);
-			if (sts & SPI_INT_RXOI) {
+			if (sts & DW_SPI_INT_RXOI) {
 				dev_err(&dws->master->dev, "FIFO overflow on Rx\n");
 				return -EIO;
 			}
@@ -603,12 +612,12 @@ static int dw_spi_write_then_read(struct dw_spi *dws, struct spi_device *spi)
 
 static inline bool dw_spi_ctlr_busy(struct dw_spi *dws)
 {
-	return dw_readl(dws, DW_SPI_SR) & SR_BUSY;
+	return dw_readl(dws, DW_SPI_SR) & DW_SPI_SR_BUSY;
 }
 
 static int dw_spi_wait_mem_op_done(struct dw_spi *dws)
 {
-	int retry = SPI_WAIT_RETRIES;
+	int retry = DW_SPI_WAIT_RETRIES;
 	struct spi_delay delay;
 	unsigned long ns, us;
 	u32 nents;
@@ -638,9 +647,9 @@ static int dw_spi_wait_mem_op_done(struct dw_spi *dws)
 
 static void dw_spi_stop_mem_op(struct dw_spi *dws, struct spi_device *spi)
 {
-	spi_enable_chip(dws, 0);
+	dw_spi_enable_chip(dws, 0);
 	dw_spi_set_cs(spi, true);
-	spi_enable_chip(dws, 1);
+	dw_spi_enable_chip(dws, 1);
 }
 
 /*
@@ -673,19 +682,19 @@ static int dw_spi_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op *op)
 	cfg.dfs = 8;
 	cfg.freq = clamp(mem->spi->max_speed_hz, 0U, dws->max_mem_freq);
 	if (op->data.dir == SPI_MEM_DATA_IN) {
-		cfg.tmode = SPI_TMOD_EPROMREAD;
+		cfg.tmode = DW_SPI_CTRLR0_TMOD_EPROMREAD;
 		cfg.ndf = op->data.nbytes;
 	} else {
-		cfg.tmode = SPI_TMOD_TO;
+		cfg.tmode = DW_SPI_CTRLR0_TMOD_TO;
 	}
 
-	spi_enable_chip(dws, 0);
+	dw_spi_enable_chip(dws, 0);
 
 	dw_spi_update_config(dws, mem->spi, &cfg);
 
-	spi_mask_intr(dws, 0xff);
+	dw_spi_mask_intr(dws, 0xff);
 
-	spi_enable_chip(dws, 1);
+	dw_spi_enable_chip(dws, 1);
 
 	/*
 	 * DW APB SSI controller has very nasty peculiarities. First originally
@@ -768,7 +777,7 @@ static void dw_spi_init_mem_ops(struct dw_spi *dws)
 static int dw_spi_setup(struct spi_device *spi)
 {
 	struct dw_spi *dws = spi_controller_get_devdata(spi->controller);
-	struct chip_data *chip;
+	struct dw_spi_chip_data *chip;
 
 	/* Only alloc on first setup */
 	chip = spi_get_ctldata(spi);
@@ -776,7 +785,7 @@ static int dw_spi_setup(struct spi_device *spi)
 		struct dw_spi *dws = spi_controller_get_devdata(spi->controller);
 		u32 rx_sample_dly_ns;
 
-		chip = kzalloc(sizeof(struct chip_data), GFP_KERNEL);
+		chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 		if (!chip)
 			return -ENOMEM;
 		spi_set_ctldata(spi, chip);
@@ -803,16 +812,30 @@ static int dw_spi_setup(struct spi_device *spi)
 
 static void dw_spi_cleanup(struct spi_device *spi)
 {
-	struct chip_data *chip = spi_get_ctldata(spi);
+	struct dw_spi_chip_data *chip = spi_get_ctldata(spi);
 
 	kfree(chip);
 	spi_set_ctldata(spi, NULL);
 }
 
 /* Restart the controller, disable all interrupts, clean rx fifo */
-static void spi_hw_init(struct device *dev, struct dw_spi *dws)
+static void dw_spi_hw_init(struct device *dev, struct dw_spi *dws)
 {
-	spi_reset_chip(dws);
+	dw_spi_reset_chip(dws);
+
+	/*
+	 * Retrieve the Synopsys component version if it hasn't been specified
+	 * by the platform. CoreKit version ID is encoded as a 3-chars ASCII
+	 * code enclosed with '*' (typical for the most of Synopsys IP-cores).
+	 */
+	if (!dws->ver) {
+		dws->ver = dw_readl(dws, DW_SPI_VERSION);
+
+		dev_dbg(dev, "Synopsys DWC%sSSI v%c.%c%c\n",
+			dw_spi_ip_is(dws, PSSI) ? " APB " : " ",
+			DW_SPI_GET_BYTE(dws->ver, 3), DW_SPI_GET_BYTE(dws->ver, 2),
+			DW_SPI_GET_BYTE(dws->ver, 1));
+	}
 
 	/*
 	 * Try to detect the FIFO depth if not set by interface driver,
@@ -837,18 +860,18 @@ static void spi_hw_init(struct device *dev, struct dw_spi *dws)
 	 * writability. Note DWC SSI controller also has the extended DFS, but
 	 * with zero offset.
 	 */
-	if (!(dws->caps & DW_SPI_CAP_DWC_SSI)) {
+	if (dw_spi_ip_is(dws, PSSI)) {
 		u32 cr0, tmp = dw_readl(dws, DW_SPI_CTRLR0);
 
-		spi_enable_chip(dws, 0);
+		dw_spi_enable_chip(dws, 0);
 		dw_writel(dws, DW_SPI_CTRLR0, 0xffffffff);
 		cr0 = dw_readl(dws, DW_SPI_CTRLR0);
 		dw_writel(dws, DW_SPI_CTRLR0, tmp);
-		spi_enable_chip(dws, 1);
+		dw_spi_enable_chip(dws, 1);
 
-		if (!(cr0 & SPI_DFS_MASK)) {
+		if (!(cr0 & DW_PSSI_CTRLR0_DFS_MASK)) {
 			dws->caps |= DW_SPI_CAP_DFS32;
-			dws->dfs_offset = SPI_DFS32_OFFSET;
+			dws->dfs_offset = __bf_shf(DW_PSSI_CTRLR0_DFS32_MASK);
 			dev_dbg(dev, "Detected 32-bits max data frame size\n");
 		}
 	} else {
@@ -872,13 +895,15 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
 	if (!master)
 		return -ENOMEM;
 
+	device_set_node(&master->dev, dev_fwnode(dev));
+
 	dws->master = master;
 	dws->dma_addr = (dma_addr_t)(dws->paddr + DW_SPI_DR);
 
 	spi_controller_set_devdata(master, dws);
 
 	/* Basic HW init */
-	spi_hw_init(dev, dws);
+	dw_spi_hw_init(dev, dws);
 
 	ret = request_irq(dws->irq, dw_spi_irq, IRQF_SHARED, dev_name(dev),
 			  master);
@@ -908,8 +933,6 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
 	if (dws->mem_ops.exec_op)
 		master->mem_ops = &dws->mem_ops;
 	master->max_speed_hz = dws->max_freq;
-	master->dev.of_node = dev->of_node;
-	master->dev.fwnode = dev->fwnode;
 	master->flags = SPI_MASTER_GPIO_SS;
 	master->auto_runtime_pm = true;
 
@@ -939,13 +962,13 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
 err_dma_exit:
 	if (dws->dma_ops && dws->dma_ops->dma_exit)
 		dws->dma_ops->dma_exit(dws);
-	spi_enable_chip(dws, 0);
+	dw_spi_enable_chip(dws, 0);
 	free_irq(dws->irq, master);
 err_free_master:
 	spi_controller_put(master);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(dw_spi_add_host);
+EXPORT_SYMBOL_NS_GPL(dw_spi_add_host, SPI_DW_CORE);
 
 void dw_spi_remove_host(struct dw_spi *dws)
 {
@@ -956,11 +979,11 @@ void dw_spi_remove_host(struct dw_spi *dws)
 	if (dws->dma_ops && dws->dma_ops->dma_exit)
 		dws->dma_ops->dma_exit(dws);
 
-	spi_shutdown_chip(dws);
+	dw_spi_shutdown_chip(dws);
 
 	free_irq(dws->irq, dws->master);
 }
-EXPORT_SYMBOL_GPL(dw_spi_remove_host);
+EXPORT_SYMBOL_NS_GPL(dw_spi_remove_host, SPI_DW_CORE);
 
 int dw_spi_suspend_host(struct dw_spi *dws)
 {
@@ -970,17 +993,17 @@ int dw_spi_suspend_host(struct dw_spi *dws)
 	if (ret)
 		return ret;
 
-	spi_shutdown_chip(dws);
+	dw_spi_shutdown_chip(dws);
 	return 0;
 }
-EXPORT_SYMBOL_GPL(dw_spi_suspend_host);
+EXPORT_SYMBOL_NS_GPL(dw_spi_suspend_host, SPI_DW_CORE);
 
 int dw_spi_resume_host(struct dw_spi *dws)
 {
-	spi_hw_init(&dws->master->dev, dws);
+	dw_spi_hw_init(&dws->master->dev, dws);
 	return spi_controller_resume(dws->master);
 }
-EXPORT_SYMBOL_GPL(dw_spi_resume_host);
+EXPORT_SYMBOL_NS_GPL(dw_spi_resume_host, SPI_DW_CORE);
 
 MODULE_AUTHOR("Feng Tang <feng.tang@intel.com>");
 MODULE_DESCRIPTION("Driver for DesignWare SPI controller core");

drivers/spi/spi-dw-dma.c

@@ -10,6 +10,7 @@
 #include <linux/dmaengine.h>
 #include <linux/irqreturn.h>
 #include <linux/jiffies.h>
+#include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/platform_data/dma-dw.h>
 #include <linux/spi/spi.h>
@@ -17,10 +18,10 @@
 
 #include "spi-dw.h"
 
-#define RX_BUSY		0
-#define RX_BURST_LEVEL	16
-#define TX_BUSY		1
-#define TX_BURST_LEVEL	16
+#define DW_SPI_RX_BUSY		0
+#define DW_SPI_RX_BURST_LEVEL	16
+#define DW_SPI_TX_BUSY		1
+#define DW_SPI_TX_BURST_LEVEL	16
 
 static bool dw_spi_dma_chan_filter(struct dma_chan *chan, void *param)
 {
@@ -45,7 +46,7 @@ static void dw_spi_dma_maxburst_init(struct dw_spi *dws)
 	if (!ret && caps.max_burst)
 		max_burst = caps.max_burst;
 	else
-		max_burst = RX_BURST_LEVEL;
+		max_burst = DW_SPI_RX_BURST_LEVEL;
 
 	dws->rxburst = min(max_burst, def_burst);
 	dw_writel(dws, DW_SPI_DMARDLR, dws->rxburst - 1);
@@ -54,7 +55,7 @@ static void dw_spi_dma_maxburst_init(struct dw_spi *dws)
 	if (!ret && caps.max_burst)
 		max_burst = caps.max_burst;
 	else
-		max_burst = TX_BURST_LEVEL;
+		max_burst = DW_SPI_TX_BURST_LEVEL;
 
 	/*
 	 * Having a Rx DMA channel serviced with higher priority than a Tx DMA
@@ -226,13 +227,13 @@ static int dw_spi_dma_wait(struct dw_spi *dws, unsigned int len, u32 speed)
 
 static inline bool dw_spi_dma_tx_busy(struct dw_spi *dws)
 {
-	return !(dw_readl(dws, DW_SPI_SR) & SR_TF_EMPT);
+	return !(dw_readl(dws, DW_SPI_SR) & DW_SPI_SR_TF_EMPT);
 }
 
 static int dw_spi_dma_wait_tx_done(struct dw_spi *dws,
 				   struct spi_transfer *xfer)
 {
-	int retry = SPI_WAIT_RETRIES;
+	int retry = DW_SPI_WAIT_RETRIES;
 	struct spi_delay delay;
 	u32 nents;
 
@@ -259,8 +260,8 @@ static void dw_spi_dma_tx_done(void *arg)
 {
 	struct dw_spi *dws = arg;
 
-	clear_bit(TX_BUSY, &dws->dma_chan_busy);
-	if (test_bit(RX_BUSY, &dws->dma_chan_busy))
+	clear_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy);
+	if (test_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy))
 		return;
 
 	complete(&dws->dma_completion);
@@ -304,19 +305,19 @@ static int dw_spi_dma_submit_tx(struct dw_spi *dws, struct scatterlist *sgl,
 		return ret;
 	}
 
-	set_bit(TX_BUSY, &dws->dma_chan_busy);
+	set_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy);
 
 	return 0;
 }
 
 static inline bool dw_spi_dma_rx_busy(struct dw_spi *dws)
 {
-	return !!(dw_readl(dws, DW_SPI_SR) & SR_RF_NOT_EMPT);
+	return !!(dw_readl(dws, DW_SPI_SR) & DW_SPI_SR_RF_NOT_EMPT);
 }
 
 static int dw_spi_dma_wait_rx_done(struct dw_spi *dws)
 {
-	int retry = SPI_WAIT_RETRIES;
+	int retry = DW_SPI_WAIT_RETRIES;
 	struct spi_delay delay;
 	unsigned long ns, us;
 	u32 nents;
@@ -360,8 +361,8 @@ static void dw_spi_dma_rx_done(void *arg)
 {
 	struct dw_spi *dws = arg;
 
-	clear_bit(RX_BUSY, &dws->dma_chan_busy);
-	if (test_bit(TX_BUSY, &dws->dma_chan_busy))
+	clear_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy);
+	if (test_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy))
 		return;
 
 	complete(&dws->dma_completion);
@@ -405,7 +406,7 @@ static int dw_spi_dma_submit_rx(struct dw_spi *dws, struct scatterlist *sgl,
 		return ret;
 	}
 
-	set_bit(RX_BUSY, &dws->dma_chan_busy);
+	set_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy);
 
 	return 0;
 }
@@ -430,16 +431,16 @@ static int dw_spi_dma_setup(struct dw_spi *dws, struct spi_transfer *xfer)
 	}
 
 	/* Set the DMA handshaking interface */
-	dma_ctrl = SPI_DMA_TDMAE;
+	dma_ctrl = DW_SPI_DMACR_TDMAE;
 	if (xfer->rx_buf)
-		dma_ctrl |= SPI_DMA_RDMAE;
+		dma_ctrl |= DW_SPI_DMACR_RDMAE;
 	dw_writel(dws, DW_SPI_DMACR, dma_ctrl);
 
 	/* Set the interrupt mask */
-	imr = SPI_INT_TXOI;
+	imr = DW_SPI_INT_TXOI;
 	if (xfer->rx_buf)
-		imr |= SPI_INT_RXUI | SPI_INT_RXOI;
-	spi_umask_intr(dws, imr);
+		imr |= DW_SPI_INT_RXUI | DW_SPI_INT_RXOI;
+	dw_spi_umask_intr(dws, imr);
 
 	reinit_completion(&dws->dma_completion);
 
@@ -615,13 +616,13 @@ static int dw_spi_dma_transfer(struct dw_spi *dws, struct spi_transfer *xfer)
 
 static void dw_spi_dma_stop(struct dw_spi *dws)
 {
-	if (test_bit(TX_BUSY, &dws->dma_chan_busy)) {
+	if (test_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy)) {
 		dmaengine_terminate_sync(dws->txchan);
-		clear_bit(TX_BUSY, &dws->dma_chan_busy);
+		clear_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy);
 	}
-	if (test_bit(RX_BUSY, &dws->dma_chan_busy)) {
+	if (test_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy)) {
 		dmaengine_terminate_sync(dws->rxchan);
-		clear_bit(RX_BUSY, &dws->dma_chan_busy);
+		clear_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy);
 	}
 }
 
@@ -638,7 +639,7 @@ void dw_spi_dma_setup_mfld(struct dw_spi *dws)
 {
 	dws->dma_ops = &dw_spi_dma_mfld_ops;
 }
-EXPORT_SYMBOL_GPL(dw_spi_dma_setup_mfld);
+EXPORT_SYMBOL_NS_GPL(dw_spi_dma_setup_mfld, SPI_DW_CORE);
 
 static const struct dw_spi_dma_ops dw_spi_dma_generic_ops = {
 	.dma_init	= dw_spi_dma_init_generic,
@@ -653,4 +654,4 @@ void dw_spi_dma_setup_generic(struct dw_spi *dws)
 {
 	dws->dma_ops = &dw_spi_dma_generic_ops;
 }
-EXPORT_SYMBOL_GPL(dw_spi_dma_setup_generic);
+EXPORT_SYMBOL_NS_GPL(dw_spi_dma_setup_generic, SPI_DW_CORE);

drivers/spi/spi-dw-mmio.c

@@ -196,18 +196,18 @@ static int dw_spi_alpine_init(struct platform_device *pdev,
 	return 0;
 }
 
-static int dw_spi_dw_apb_init(struct platform_device *pdev,
-			      struct dw_spi_mmio *dwsmmio)
+static int dw_spi_pssi_init(struct platform_device *pdev,
+			    struct dw_spi_mmio *dwsmmio)
 {
 	dw_spi_dma_setup_generic(&dwsmmio->dws);
 
 	return 0;
 }
 
-static int dw_spi_dwc_ssi_init(struct platform_device *pdev,
-			       struct dw_spi_mmio *dwsmmio)
+static int dw_spi_hssi_init(struct platform_device *pdev,
+			    struct dw_spi_mmio *dwsmmio)
 {
-	dwsmmio->dws.caps = DW_SPI_CAP_DWC_SSI;
+	dwsmmio->dws.ip = DW_HSSI_ID;
 
 	dw_spi_dma_setup_generic(&dwsmmio->dws);
 
@@ -217,7 +217,8 @@ static int dw_spi_dwc_ssi_init(struct platform_device *pdev,
 static int dw_spi_keembay_init(struct platform_device *pdev,
 			       struct dw_spi_mmio *dwsmmio)
 {
-	dwsmmio->dws.caps = DW_SPI_CAP_KEEMBAY_MST | DW_SPI_CAP_DWC_SSI;
+	dwsmmio->dws.ip = DW_HSSI_ID;
+	dwsmmio->dws.caps = DW_SPI_CAP_KEEMBAY_MST;
 
 	return 0;
 }
@@ -342,12 +343,12 @@ static int dw_spi_mmio_remove(struct platform_device *pdev)
 }
 
 static const struct of_device_id dw_spi_mmio_of_match[] = {
-	{ .compatible = "snps,dw-apb-ssi", .data = dw_spi_dw_apb_init},
+	{ .compatible = "snps,dw-apb-ssi", .data = dw_spi_pssi_init},
 	{ .compatible = "mscc,ocelot-spi", .data = dw_spi_mscc_ocelot_init},
 	{ .compatible = "mscc,jaguar2-spi", .data = dw_spi_mscc_jaguar2_init},
 	{ .compatible = "amazon,alpine-dw-apb-ssi", .data = dw_spi_alpine_init},
-	{ .compatible = "renesas,rzn1-spi", .data = dw_spi_dw_apb_init},
-	{ .compatible = "snps,dwc-ssi-1.01a", .data = dw_spi_dwc_ssi_init},
+	{ .compatible = "renesas,rzn1-spi", .data = dw_spi_pssi_init},
+	{ .compatible = "snps,dwc-ssi-1.01a", .data = dw_spi_hssi_init},
 	{ .compatible = "intel,keembay-ssi", .data = dw_spi_keembay_init},
 	{ .compatible = "microchip,sparx5-spi", dw_spi_mscc_sparx5_init},
 	{ .compatible = "canaan,k210-spi", dw_spi_canaan_k210_init},
@@ -357,7 +358,7 @@ MODULE_DEVICE_TABLE(of, dw_spi_mmio_of_match);
 
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id dw_spi_mmio_acpi_match[] = {
-	{"HISI0173", (kernel_ulong_t)dw_spi_dw_apb_init},
+	{"HISI0173", (kernel_ulong_t)dw_spi_pssi_init},
 	{},
 };
 MODULE_DEVICE_TABLE(acpi, dw_spi_mmio_acpi_match);
@@ -377,3 +378,4 @@ module_platform_driver(dw_spi_mmio_driver);
 MODULE_AUTHOR("Jean-Hugues Deschenes <jean-hugues.deschenes@octasic.com>");
 MODULE_DESCRIPTION("Memory-mapped I/O interface driver for DW SPI Core");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(SPI_DW_CORE);

drivers/spi/spi-dw-pci.c

@@ -24,14 +24,14 @@
 #define CLK_SPI_CDIV_MASK	0x00000e00
 #define CLK_SPI_DISABLE_OFFSET	8
 
-struct spi_pci_desc {
+struct dw_spi_pci_desc {
 	int	(*setup)(struct dw_spi *);
 	u16	num_cs;
 	u16	bus_num;
 	u32	max_freq;
 };
 
-static int spi_mid_init(struct dw_spi *dws)
+static int dw_spi_pci_mid_init(struct dw_spi *dws)
 {
 	void __iomem *clk_reg;
 	u32 clk_cdiv;
@@ -53,36 +53,36 @@ static int spi_mid_init(struct dw_spi *dws)
 	return 0;
 }
 
-static int spi_generic_init(struct dw_spi *dws)
+static int dw_spi_pci_generic_init(struct dw_spi *dws)
 {
 	dw_spi_dma_setup_generic(dws);
 
 	return 0;
 }
 
-static struct spi_pci_desc spi_pci_mid_desc_1 = {
-	.setup = spi_mid_init,
+static struct dw_spi_pci_desc dw_spi_pci_mid_desc_1 = {
+	.setup = dw_spi_pci_mid_init,
 	.num_cs = 5,
 	.bus_num = 0,
 };
 
-static struct spi_pci_desc spi_pci_mid_desc_2 = {
-	.setup = spi_mid_init,
+static struct dw_spi_pci_desc dw_spi_pci_mid_desc_2 = {
+	.setup = dw_spi_pci_mid_init,
 	.num_cs = 2,
 	.bus_num = 1,
 };
 
-static struct spi_pci_desc spi_pci_ehl_desc = {
-	.setup = spi_generic_init,
+static struct dw_spi_pci_desc dw_spi_pci_ehl_desc = {
+	.setup = dw_spi_pci_generic_init,
 	.num_cs = 2,
 	.bus_num = -1,
 	.max_freq = 100000000,
 };
 
-static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+static int dw_spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
+	struct dw_spi_pci_desc *desc = (struct dw_spi_pci_desc *)ent->driver_data;
 	struct dw_spi *dws;
-	struct spi_pci_desc *desc = (struct spi_pci_desc *)ent->driver_data;
 	int pci_bar = 0;
 	int ret;
 
@@ -150,7 +150,7 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	return ret;
 }
 
-static void spi_pci_remove(struct pci_dev *pdev)
+static void dw_spi_pci_remove(struct pci_dev *pdev)
 {
 	struct dw_spi *dws = pci_get_drvdata(pdev);
 
@@ -162,14 +162,14 @@ static void spi_pci_remove(struct pci_dev *pdev)
 }
 
 #ifdef CONFIG_PM_SLEEP
-static int spi_suspend(struct device *dev)
+static int dw_spi_pci_suspend(struct device *dev)
 {
 	struct dw_spi *dws = dev_get_drvdata(dev);
 
 	return dw_spi_suspend_host(dws);
 }
 
-static int spi_resume(struct device *dev)
+static int dw_spi_pci_resume(struct device *dev)
 {
 	struct dw_spi *dws = dev_get_drvdata(dev);
 
@@ -177,39 +177,39 @@ static int spi_resume(struct device *dev)
 }
 #endif
 
-static SIMPLE_DEV_PM_OPS(dw_spi_pm_ops, spi_suspend, spi_resume);
+static SIMPLE_DEV_PM_OPS(dw_spi_pci_pm_ops, dw_spi_pci_suspend, dw_spi_pci_resume);
 
-static const struct pci_device_id pci_ids[] = {
+static const struct pci_device_id dw_spi_pci_ids[] = {
 	/* Intel MID platform SPI controller 0 */
 	/*
 	 * The access to the device 8086:0801 is disabled by HW, since it's
 	 * exclusively used by SCU to communicate with MSIC.
 	 */
 	/* Intel MID platform SPI controller 1 */
-	{ PCI_VDEVICE(INTEL, 0x0800), (kernel_ulong_t)&spi_pci_mid_desc_1},
+	{ PCI_VDEVICE(INTEL, 0x0800), (kernel_ulong_t)&dw_spi_pci_mid_desc_1},
 	/* Intel MID platform SPI controller 2 */
-	{ PCI_VDEVICE(INTEL, 0x0812), (kernel_ulong_t)&spi_pci_mid_desc_2},
+	{ PCI_VDEVICE(INTEL, 0x0812), (kernel_ulong_t)&dw_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},
+	{ PCI_VDEVICE(INTEL, 0x4b84), (kernel_ulong_t)&dw_spi_pci_ehl_desc},
+	{ PCI_VDEVICE(INTEL, 0x4b85), (kernel_ulong_t)&dw_spi_pci_ehl_desc},
+	{ PCI_VDEVICE(INTEL, 0x4b86), (kernel_ulong_t)&dw_spi_pci_ehl_desc},
+	{ PCI_VDEVICE(INTEL, 0x4b87), (kernel_ulong_t)&dw_spi_pci_ehl_desc},
 	{},
 };
-MODULE_DEVICE_TABLE(pci, pci_ids);
+MODULE_DEVICE_TABLE(pci, dw_spi_pci_ids);
 
-static struct pci_driver dw_spi_driver = {
+static struct pci_driver dw_spi_pci_driver = {
 	.name =		DRIVER_NAME,
-	.id_table =	pci_ids,
-	.probe =	spi_pci_probe,
-	.remove =	spi_pci_remove,
+	.id_table =	dw_spi_pci_ids,
+	.probe =	dw_spi_pci_probe,
+	.remove =	dw_spi_pci_remove,
 	.driver         = {
-		.pm     = &dw_spi_pm_ops,
+		.pm     = &dw_spi_pci_pm_ops,
 	},
 };
-
-module_pci_driver(dw_spi_driver);
+module_pci_driver(dw_spi_pci_driver);
 
 MODULE_AUTHOR("Feng Tang <feng.tang@intel.com>");
 MODULE_DESCRIPTION("PCI interface driver for DW SPI Core");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(SPI_DW_CORE);

drivers/spi/spi-dw.h

 /* SPDX-License-Identifier: GPL-2.0 */
-#ifndef DW_SPI_HEADER_H
-#define DW_SPI_HEADER_H
+#ifndef __SPI_DW_H__
+#define __SPI_DW_H__
 
 #include <linux/bits.h>
 #include <linux/completion.h>
@@ -11,7 +11,30 @@
 #include <linux/spi/spi-mem.h>
 #include <linux/bitfield.h>
 
-/* Register offsets */
+/* Synopsys DW SSI IP-core virtual IDs */
+#define DW_PSSI_ID			0
+#define DW_HSSI_ID			1
+
+/* Synopsys DW SSI component versions (FourCC sequence) */
+#define DW_HSSI_102A			0x3130322a
+
+/* DW SSI IP-core ID and version check helpers */
+#define dw_spi_ip_is(_dws, _ip) \
+	((_dws)->ip == DW_ ## _ip ## _ID)
+
+#define __dw_spi_ver_cmp(_dws, _ip, _ver, _op) \
+	(dw_spi_ip_is(_dws, _ip) && (_dws)->ver _op DW_ ## _ip ## _ver)
+
+#define dw_spi_ver_is(_dws, _ip, _ver) __dw_spi_ver_cmp(_dws, _ip, _ver, ==)
+
+#define dw_spi_ver_is_ge(_dws, _ip, _ver) __dw_spi_ver_cmp(_dws, _ip, _ver, >=)
+
+/* DW SPI controller capabilities */
+#define DW_SPI_CAP_CS_OVERRIDE		BIT(0)
+#define DW_SPI_CAP_KEEMBAY_MST		BIT(1)
+#define DW_SPI_CAP_DFS32		BIT(2)
+
+/* Register offsets (Generic for both DWC APB SSI and DWC SSI IP-cores) */
 #define DW_SPI_CTRLR0			0x00
 #define DW_SPI_CTRLR1			0x04
 #define DW_SPI_SSIENR			0x08
@@ -40,92 +63,79 @@
 #define DW_SPI_RX_SAMPLE_DLY		0xf0
 #define DW_SPI_CS_OVERRIDE		0xf4
 
-/* Bit fields in CTRLR0 */
-#define SPI_DFS_OFFSET			0
-#define SPI_DFS_MASK			GENMASK(3, 0)
-#define SPI_DFS32_OFFSET		16
-
-#define SPI_FRF_OFFSET			4
-#define SPI_FRF_SPI			0x0
-#define SPI_FRF_SSP			0x1
-#define SPI_FRF_MICROWIRE		0x2
-#define SPI_FRF_RESV			0x3
-
-#define SPI_MODE_OFFSET			6
-#define SPI_SCPH_OFFSET			6
-#define SPI_SCOL_OFFSET			7
-
-#define SPI_TMOD_OFFSET			8
-#define SPI_TMOD_MASK			(0x3 << SPI_TMOD_OFFSET)
-#define	SPI_TMOD_TR			0x0		/* xmit & recv */
-#define SPI_TMOD_TO			0x1		/* xmit only */
-#define SPI_TMOD_RO			0x2		/* recv only */
-#define SPI_TMOD_EPROMREAD		0x3		/* eeprom read mode */
-
-#define SPI_SLVOE_OFFSET		10
-#define SPI_SRL_OFFSET			11
-#define SPI_CFS_OFFSET			12
-
-/* Bit fields in CTRLR0 based on DWC_ssi_databook.pdf v1.01a */
-#define DWC_SSI_CTRLR0_SRL_OFFSET	13
-#define DWC_SSI_CTRLR0_TMOD_OFFSET	10
-#define DWC_SSI_CTRLR0_TMOD_MASK	GENMASK(11, 10)
-#define DWC_SSI_CTRLR0_SCPOL_OFFSET	9
-#define DWC_SSI_CTRLR0_SCPH_OFFSET	8
-#define DWC_SSI_CTRLR0_FRF_OFFSET	6
-#define DWC_SSI_CTRLR0_DFS_OFFSET	0
+/* Bit fields in CTRLR0 (DWC APB SSI) */
+#define DW_PSSI_CTRLR0_DFS_MASK			GENMASK(3, 0)
+#define DW_PSSI_CTRLR0_DFS32_MASK		GENMASK(20, 16)
+
+#define DW_PSSI_CTRLR0_FRF_MASK			GENMASK(5, 4)
+#define DW_SPI_CTRLR0_FRF_MOTO_SPI		0x0
+#define DW_SPI_CTRLR0_FRF_TI_SSP		0x1
+#define DW_SPI_CTRLR0_FRF_NS_MICROWIRE		0x2
+#define DW_SPI_CTRLR0_FRF_RESV			0x3
+
+#define DW_PSSI_CTRLR0_MODE_MASK		GENMASK(7, 6)
+#define DW_PSSI_CTRLR0_SCPHA			BIT(6)
+#define DW_PSSI_CTRLR0_SCPOL			BIT(7)
+
+#define DW_PSSI_CTRLR0_TMOD_MASK		GENMASK(9, 8)
+#define DW_SPI_CTRLR0_TMOD_TR			0x0	/* xmit & recv */
+#define DW_SPI_CTRLR0_TMOD_TO			0x1	/* xmit only */
+#define DW_SPI_CTRLR0_TMOD_RO			0x2	/* recv only */
+#define DW_SPI_CTRLR0_TMOD_EPROMREAD		0x3	/* eeprom read mode */
+
+#define DW_PSSI_CTRLR0_SLV_OE			BIT(10)
+#define DW_PSSI_CTRLR0_SRL			BIT(11)
+#define DW_PSSI_CTRLR0_CFS			BIT(12)
+
+/* Bit fields in CTRLR0 (DWC SSI with AHB interface) */
+#define DW_HSSI_CTRLR0_DFS_MASK			GENMASK(4, 0)
+#define DW_HSSI_CTRLR0_FRF_MASK			GENMASK(7, 6)
+#define DW_HSSI_CTRLR0_SCPHA			BIT(8)
+#define DW_HSSI_CTRLR0_SCPOL			BIT(9)
+#define DW_HSSI_CTRLR0_TMOD_MASK		GENMASK(11, 10)
+#define DW_HSSI_CTRLR0_SRL			BIT(13)
 
 /*
  * For Keem Bay, CTRLR0[31] is used to select controller mode.
  * 0: SSI is slave
  * 1: SSI is master
  */
-#define DWC_SSI_CTRLR0_KEEMBAY_MST	BIT(31)
+#define DW_HSSI_CTRLR0_KEEMBAY_MST		BIT(31)
 
 /* Bit fields in CTRLR1 */
-#define SPI_NDF_MASK			GENMASK(15, 0)
+#define DW_SPI_NDF_MASK				GENMASK(15, 0)
 
 /* Bit fields in SR, 7 bits */
-#define SR_MASK				0x7f		/* cover 7 bits */
-#define SR_BUSY				(1 << 0)
-#define SR_TF_NOT_FULL			(1 << 1)
-#define SR_TF_EMPT			(1 << 2)
-#define SR_RF_NOT_EMPT			(1 << 3)
-#define SR_RF_FULL			(1 << 4)
-#define SR_TX_ERR			(1 << 5)
-#define SR_DCOL				(1 << 6)
+#define DW_SPI_SR_MASK				GENMASK(6, 0)
+#define DW_SPI_SR_BUSY				BIT(0)
+#define DW_SPI_SR_TF_NOT_FULL			BIT(1)
+#define DW_SPI_SR_TF_EMPT			BIT(2)
+#define DW_SPI_SR_RF_NOT_EMPT			BIT(3)
+#define DW_SPI_SR_RF_FULL			BIT(4)
+#define DW_SPI_SR_TX_ERR			BIT(5)
+#define DW_SPI_SR_DCOL				BIT(6)
 
 /* Bit fields in ISR, IMR, RISR, 7 bits */
-#define SPI_INT_TXEI			(1 << 0)
-#define SPI_INT_TXOI			(1 << 1)
-#define SPI_INT_RXUI			(1 << 2)
-#define SPI_INT_RXOI			(1 << 3)
-#define SPI_INT_RXFI			(1 << 4)
-#define SPI_INT_MSTI			(1 << 5)
+#define DW_SPI_INT_MASK				GENMASK(5, 0)
+#define DW_SPI_INT_TXEI				BIT(0)
+#define DW_SPI_INT_TXOI				BIT(1)
+#define DW_SPI_INT_RXUI				BIT(2)
+#define DW_SPI_INT_RXOI				BIT(3)
+#define DW_SPI_INT_RXFI				BIT(4)
+#define DW_SPI_INT_MSTI				BIT(5)
 
 /* Bit fields in DMACR */
-#define SPI_DMA_RDMAE			(1 << 0)
-#define SPI_DMA_TDMAE			(1 << 1)
+#define DW_SPI_DMACR_RDMAE			BIT(0)
+#define DW_SPI_DMACR_TDMAE			BIT(1)
 
-#define SPI_WAIT_RETRIES		5
-#define SPI_BUF_SIZE \
+/* Mem/DMA operations helpers */
+#define DW_SPI_WAIT_RETRIES			5
+#define DW_SPI_BUF_SIZE \
 	(sizeof_field(struct spi_mem_op, cmd.opcode) + \
 	 sizeof_field(struct spi_mem_op, addr.val) + 256)
-#define SPI_GET_BYTE(_val, _idx) \
+#define DW_SPI_GET_BYTE(_val, _idx) \
 	((_val) >> (BITS_PER_BYTE * (_idx)) & 0xff)
 
-enum dw_ssi_type {
-	SSI_MOTO_SPI = 0,
-	SSI_TI_SSP,
-	SSI_NS_MICROWIRE,
-};
-
-/* DW SPI capabilities */
-#define DW_SPI_CAP_CS_OVERRIDE		BIT(0)
-#define DW_SPI_CAP_KEEMBAY_MST		BIT(1)
-#define DW_SPI_CAP_DWC_SSI		BIT(2)
-#define DW_SPI_CAP_DFS32		BIT(3)
-
 /* Slave spi_transfer/spi_mem_op related */
 struct dw_spi_cfg {
 	u8 tmode;
@@ -148,6 +158,10 @@ struct dw_spi_dma_ops {
 struct dw_spi {
 	struct spi_controller	*master;
 
+	u32			ip;		/* Synopsys DW SSI IP-core ID */
+	u32			ver;		/* Synopsys component version */
+	u32			caps;		/* DW SPI capabilities */
+
 	void __iomem		*regs;
 	unsigned long		paddr;
 	int			irq;
@@ -156,8 +170,6 @@ struct dw_spi {
 	u32			max_mem_freq;	/* max mem-ops bus freq */
 	u32			max_freq;	/* max bus freq supported */
 
-	u32			caps;		/* DW SPI capabilities */
-
 	u32			reg_io_width;	/* DR I/O width in bytes */
 	u16			bus_num;
 	u16			num_cs;		/* supported slave numbers */
@@ -168,7 +180,7 @@ struct dw_spi {
 	unsigned int		tx_len;
 	void			*rx;
 	unsigned int		rx_len;
-	u8			buf[SPI_BUF_SIZE];
+	u8			buf[DW_SPI_BUF_SIZE];
 	int			dma_mapped;
 	u8			n_bytes;	/* current is a 1/2 bytes op */
 	irqreturn_t		(*transfer_handler)(struct dw_spi *dws);
@@ -230,18 +242,18 @@ static inline void dw_write_io_reg(struct dw_spi *dws, u32 offset, u32 val)
 	}
 }
 
-static inline void spi_enable_chip(struct dw_spi *dws, int enable)
+static inline void dw_spi_enable_chip(struct dw_spi *dws, int enable)
 {
 	dw_writel(dws, DW_SPI_SSIENR, (enable ? 1 : 0));
 }
 
-static inline void spi_set_clk(struct dw_spi *dws, u16 div)
+static inline void dw_spi_set_clk(struct dw_spi *dws, u16 div)
 {
 	dw_writel(dws, DW_SPI_BAUDR, div);
 }
 
 /* Disable IRQ bits */
-static inline void spi_mask_intr(struct dw_spi *dws, u32 mask)
+static inline void dw_spi_mask_intr(struct dw_spi *dws, u32 mask)
 {
 	u32 new_mask;
 
@@ -250,7 +262,7 @@ static inline void spi_mask_intr(struct dw_spi *dws, u32 mask)
 }
 
 /* Enable IRQ bits */
-static inline void spi_umask_intr(struct dw_spi *dws, u32 mask)
+static inline void dw_spi_umask_intr(struct dw_spi *dws, u32 mask)
 {
 	u32 new_mask;
 
@@ -263,19 +275,19 @@ static inline void spi_umask_intr(struct dw_spi *dws, u32 mask)
  * and CS, then re-enables the controller back. Transmit and receive FIFO
  * buffers are cleared when the device is disabled.
  */
-static inline void spi_reset_chip(struct dw_spi *dws)
+static inline void dw_spi_reset_chip(struct dw_spi *dws)
 {
-	spi_enable_chip(dws, 0);
-	spi_mask_intr(dws, 0xff);
+	dw_spi_enable_chip(dws, 0);
+	dw_spi_mask_intr(dws, 0xff);
 	dw_readl(dws, DW_SPI_ICR);
 	dw_writel(dws, DW_SPI_SER, 0);
-	spi_enable_chip(dws, 1);
+	dw_spi_enable_chip(dws, 1);
 }
 
-static inline void spi_shutdown_chip(struct dw_spi *dws)
+static inline void dw_spi_shutdown_chip(struct dw_spi *dws)
 {
-	spi_enable_chip(dws, 0);
-	spi_set_clk(dws, 0);
+	dw_spi_enable_chip(dws, 0);
+	dw_spi_set_clk(dws, 0);
 }
 
 extern void dw_spi_set_cs(struct spi_device *spi, bool enable);
@@ -299,4 +311,4 @@ static inline void dw_spi_dma_setup_generic(struct dw_spi *dws) {}
 
 #endif /* !CONFIG_SPI_DW_DMA */
 
-#endif /* DW_SPI_HEADER_H */
+#endif /* __SPI_DW_H__ */

drivers/spi/spi-fsl-lpspi.c

@@ -913,7 +913,7 @@ static int fsl_lpspi_probe(struct platform_device *pdev)
 	ret = devm_spi_register_controller(&pdev->dev, controller);
 	if (ret < 0) {
 		dev_err_probe(&pdev->dev, ret, "spi_register_controller error: %i\n", ret);
-		goto out_pm_get;
+		goto free_dma;
 	}
 
 	pm_runtime_mark_last_busy(fsl_lpspi->dev);
@@ -921,6 +921,8 @@ static int fsl_lpspi_probe(struct platform_device *pdev)
 
 	return 0;
 
+free_dma:
+	fsl_lpspi_dma_exit(controller);
 out_pm_get:
 	pm_runtime_dont_use_autosuspend(fsl_lpspi->dev);
 	pm_runtime_put_sync(fsl_lpspi->dev);
@@ -937,6 +939,8 @@ static int fsl_lpspi_remove(struct platform_device *pdev)
 	struct fsl_lpspi_data *fsl_lpspi =
 				spi_controller_get_devdata(controller);
 
+	fsl_lpspi_dma_exit(controller);
+
 	pm_runtime_disable(fsl_lpspi->dev);
 	return 0;
 }

drivers/spi/spi-geni-qcom.c

@@ -71,10 +71,6 @@
 #define GSI_CPHA		BIT(4)
 #define GSI_CPOL		BIT(5)
 
-#define MAX_TX_SG		3
-#define NUM_SPI_XFER		8
-#define SPI_XFER_TIMEOUT_MS	250
-
 struct spi_geni_master {
 	struct geni_se se;
 	struct device *dev;
@@ -168,6 +164,30 @@ static void handle_fifo_timeout(struct spi_master *spi,
 	}
 }
 
+static void handle_gpi_timeout(struct spi_master *spi, struct spi_message *msg)
+{
+	struct spi_geni_master *mas = spi_master_get_devdata(spi);
+
+	dmaengine_terminate_sync(mas->tx);
+	dmaengine_terminate_sync(mas->rx);
+}
+
+static void spi_geni_handle_err(struct spi_master *spi, struct spi_message *msg)
+{
+	struct spi_geni_master *mas = spi_master_get_devdata(spi);
+
+	switch (mas->cur_xfer_mode) {
+	case GENI_SE_FIFO:
+		handle_fifo_timeout(spi, msg);
+		break;
+	case GENI_GPI_DMA:
+		handle_gpi_timeout(spi, msg);
+		break;
+	default:
+		dev_err(mas->dev, "Abort on Mode:%d not supported", mas->cur_xfer_mode);
+	}
+}
+
 static bool spi_geni_is_abort_still_pending(struct spi_geni_master *mas)
 {
 	struct geni_se *se = &mas->se;
@@ -350,17 +370,21 @@ spi_gsi_callback_result(void *cb, const struct dmaengine_result *result)
 {
 	struct spi_master *spi = cb;
 
+	spi->cur_msg->status = -EIO;
 	if (result->result != DMA_TRANS_NOERROR) {
 		dev_err(&spi->dev, "DMA txn failed: %d\n", result->result);
+		spi_finalize_current_transfer(spi);
 		return;
 	}
 
 	if (!result->residue) {
+		spi->cur_msg->status = 0;
 		dev_dbg(&spi->dev, "DMA txn completed\n");
-		spi_finalize_current_transfer(spi);
 	} else {
 		dev_err(&spi->dev, "DMA xfer has pending: %d\n", result->residue);
 	}
+
+	spi_finalize_current_transfer(spi);
 }
 
 static int setup_gsi_xfer(struct spi_transfer *xfer, struct spi_geni_master *mas,
@@ -922,7 +946,7 @@ static int spi_geni_probe(struct platform_device *pdev)
 	spi->can_dma = geni_can_dma;
 	spi->dma_map_dev = dev->parent;
 	spi->auto_runtime_pm = true;
-	spi->handle_err = handle_fifo_timeout;
+	spi->handle_err = spi_geni_handle_err;
 	spi->use_gpio_descriptors = true;
 
 	init_completion(&mas->cs_done);

drivers/spi/spi-hisi-kunpeng.c

@@ -127,7 +127,6 @@ struct hisi_spi {
 	void __iomem		*regs;
 	int			irq;
 	u32			fifo_len; /* depth of the FIFO buffer */
-	u16			bus_num;
 
 	/* Current message transfer state info */
 	const void		*tx;
@@ -165,7 +164,10 @@ static int hisi_spi_debugfs_init(struct hisi_spi *hs)
 {
 	char name[32];
 
-	snprintf(name, 32, "hisi_spi%d", hs->bus_num);
+	struct spi_controller *master;
+
+	master = container_of(hs->dev, struct spi_controller, dev);
+	snprintf(name, 32, "hisi_spi%d", master->bus_num);
 	hs->debugfs = debugfs_create_dir(name, NULL);
 	if (!hs->debugfs)
 		return -ENOMEM;
@@ -467,7 +469,6 @@ static int hisi_spi_probe(struct platform_device *pdev)
 	hs = spi_controller_get_devdata(master);
 	hs->dev = dev;
 	hs->irq = irq;
-	hs->bus_num = pdev->id;
 
 	hs->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(hs->regs))
@@ -490,7 +491,7 @@ static int hisi_spi_probe(struct platform_device *pdev)
 	master->use_gpio_descriptors = true;
 	master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP;
 	master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32);
-	master->bus_num = hs->bus_num;
+	master->bus_num = pdev->id;
 	master->setup = hisi_spi_setup;
 	master->cleanup = hisi_spi_cleanup;
 	master->transfer_one = hisi_spi_transfer_one;
@@ -506,15 +507,15 @@ static int hisi_spi_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	if (hisi_spi_debugfs_init(hs))
-		dev_info(dev, "failed to create debugfs dir\n");
-
 	ret = spi_register_controller(master);
 	if (ret) {
 		dev_err(dev, "failed to register spi master, ret=%d\n", ret);
 		return ret;
 	}
 
+	if (hisi_spi_debugfs_init(hs))
+		dev_info(dev, "failed to create debugfs dir\n");
+
 	dev_info(dev, "hw version:0x%x max-freq:%u kHz\n",
 		readl(hs->regs + HISI_SPI_VERSION),
 		master->max_speed_hz / 1000);

drivers/spi/spi-meson-spifc.c

@@ -349,6 +349,7 @@ static int meson_spifc_probe(struct platform_device *pdev)
 	return 0;
 out_clk:
 	clk_disable_unprepare(spifc->clk);
+	pm_runtime_disable(spifc->dev);
 out_err:
 	spi_master_put(master);
 	return ret;

drivers/spi/spi-pxa2xx.c

@@ -427,7 +427,6 @@ static void lpss_ssp_cs_control(struct spi_device *spi, bool enable)
 
 static void cs_assert(struct spi_device *spi)
 {
-	struct chip_data *chip = spi_get_ctldata(spi);
 	struct driver_data *drv_data =
 		spi_controller_get_devdata(spi->controller);
 
@@ -436,18 +435,12 @@ static void cs_assert(struct spi_device *spi)
 		return;
 	}
 
-	if (chip->cs_control) {
-		chip->cs_control(PXA2XX_CS_ASSERT);
-		return;
-	}
-
 	if (is_lpss_ssp(drv_data))
 		lpss_ssp_cs_control(spi, true);
 }
 
 static void cs_deassert(struct spi_device *spi)
 {
-	struct chip_data *chip = spi_get_ctldata(spi);
 	struct driver_data *drv_data =
 		spi_controller_get_devdata(spi->controller);
 	unsigned long timeout;
@@ -461,11 +454,6 @@ static void cs_deassert(struct spi_device *spi)
 	       !time_after(jiffies, timeout))
 		cpu_relax();
 
-	if (chip->cs_control) {
-		chip->cs_control(PXA2XX_CS_DEASSERT);
-		return;
-	}
-
 	if (is_lpss_ssp(drv_data))
 		lpss_ssp_cs_control(spi, false);
 }
@@ -994,13 +982,10 @@ static int pxa2xx_spi_transfer_one(struct spi_controller *controller,
 		dev_err(&spi->dev, "Flush failed\n");
 		return -EIO;
 	}
-	drv_data->n_bytes = chip->n_bytes;
 	drv_data->tx = (void *)transfer->tx_buf;
 	drv_data->tx_end = drv_data->tx + transfer->len;
 	drv_data->rx = transfer->rx_buf;
 	drv_data->rx_end = drv_data->rx + transfer->len;
-	drv_data->write = drv_data->tx ? chip->write : null_writer;
-	drv_data->read = drv_data->rx ? chip->read : null_reader;
 
 	/* Change speed and bit per word on a per transfer */
 	bits = transfer->bits_per_word;
@@ -1010,22 +995,16 @@ static int pxa2xx_spi_transfer_one(struct spi_controller *controller,
 
 	if (bits <= 8) {
 		drv_data->n_bytes = 1;
-		drv_data->read = drv_data->read != null_reader ?
-					u8_reader : null_reader;
-		drv_data->write = drv_data->write != null_writer ?
-					u8_writer : null_writer;
+		drv_data->read = drv_data->rx ? u8_reader : null_reader;
+		drv_data->write = drv_data->tx ? u8_writer : null_writer;
 	} else if (bits <= 16) {
 		drv_data->n_bytes = 2;
-		drv_data->read = drv_data->read != null_reader ?
-					u16_reader : null_reader;
-		drv_data->write = drv_data->write != null_writer ?
-					u16_writer : null_writer;
+		drv_data->read = drv_data->rx ? u16_reader : null_reader;
+		drv_data->write = drv_data->tx ? u16_writer : null_writer;
 	} else if (bits <= 32) {
 		drv_data->n_bytes = 4;
-		drv_data->read = drv_data->read != null_reader ?
-					u32_reader : null_reader;
-		drv_data->write = drv_data->write != null_writer ?
-					u32_writer : null_writer;
+		drv_data->read = drv_data->rx ? u32_reader : null_reader;
+		drv_data->write = drv_data->tx ? u32_writer : null_writer;
 	}
 	/*
 	 * If bits per word is changed in DMA mode, then must check
@@ -1213,12 +1192,6 @@ static int setup_cs(struct spi_device *spi, struct chip_data *chip,
 	 */
 	cleanup_cs(spi);
 
-	/* If ->cs_control() is provided, ignore GPIO chip select */
-	if (chip_info->cs_control) {
-		chip->cs_control = chip_info->cs_control;
-		return 0;
-	}
-
 	if (gpio_is_valid(chip_info->gpio_cs)) {
 		int gpio = chip_info->gpio_cs;
 		int err;
@@ -1316,7 +1289,6 @@ static int setup(struct spi_device *spi)
 	chip_info = spi->controller_data;
 
 	/* chip_info isn't always needed */
-	chip->cr1 = 0;
 	if (chip_info) {
 		if (chip_info->timeout)
 			chip->timeout = chip_info->timeout;
@@ -1327,9 +1299,9 @@ static int setup(struct spi_device *spi)
 		if (chip_info->rx_threshold)
 			rx_thres = chip_info->rx_threshold;
 		chip->dma_threshold = 0;
-		if (chip_info->enable_loopback)
-			chip->cr1 = SSCR1_LBM;
 	}
+
+	chip->cr1 = 0;
 	if (spi_controller_is_slave(drv_data->controller)) {
 		chip->cr1 |= SSCR1_SCFR;
 		chip->cr1 |= SSCR1_SCLKDIR;
@@ -1391,20 +1363,6 @@ static int setup(struct spi_device *spi)
 	if (spi->mode & SPI_LOOP)
 		chip->cr1 |= SSCR1_LBM;
 
-	if (spi->bits_per_word <= 8) {
-		chip->n_bytes = 1;
-		chip->read = u8_reader;
-		chip->write = u8_writer;
-	} else if (spi->bits_per_word <= 16) {
-		chip->n_bytes = 2;
-		chip->read = u16_reader;
-		chip->write = u16_writer;
-	} else if (spi->bits_per_word <= 32) {
-		chip->n_bytes = 4;
-		chip->read = u32_reader;
-		chip->write = u32_writer;
-	}
-
 	spi_set_ctldata(spi, chip);
 
 	if (drv_data->ssp_type == CE4100_SSP)
@@ -1706,8 +1664,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
 	drv_data->controller_info = platform_info;
 	drv_data->ssp = ssp;
 
-	controller->dev.of_node = dev->of_node;
-	controller->dev.fwnode = dev->fwnode;
+	device_set_node(&controller->dev, dev_fwnode(dev));
 
 	/* The spi->mode bits understood by this driver: */
 	controller->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP;

drivers/spi/spi-pxa2xx.h

@@ -49,7 +49,6 @@ struct driver_data {
 	int (*write)(struct driver_data *drv_data);
 	int (*read)(struct driver_data *drv_data);
 	irqreturn_t (*transfer_handler)(struct driver_data *drv_data);
-	void (*cs_control)(u32 command);
 
 	void __iomem *lpss_base;
 
@@ -61,18 +60,12 @@ struct chip_data {
 	u32 cr1;
 	u32 dds_rate;
 	u32 timeout;
-	u8 n_bytes;
 	u8 enable_dma;
 	u32 dma_burst_size;
 	u32 dma_threshold;
 	u32 threshold;
 	u16 lpss_rx_threshold;
 	u16 lpss_tx_threshold;
-
-	int (*write)(struct driver_data *drv_data);
-	int (*read)(struct driver_data *drv_data);
-
-	void (*cs_control)(u32 command);
 };
 
 static inline u32 pxa2xx_spi_read(const struct driver_data *drv_data, u32 reg)

drivers/spi/spi-rspi.c

@@ -21,6 +21,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/of_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/reset.h>
 #include <linux/sh_dma.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/rspi.h>
@@ -834,7 +835,7 @@ static int qspi_transfer_in(struct rspi_data *rspi, struct spi_transfer *xfer)
 	int ret;
 
 	if (rspi->ctlr->can_dma && __rspi_can_dma(rspi, xfer)) {
-		int ret = rspi_dma_transfer(rspi, NULL, &xfer->rx_sg);
+		ret = rspi_dma_transfer(rspi, NULL, &xfer->rx_sg);
 		if (ret != -EAGAIN)
 			return ret;
 	}
@@ -1225,8 +1226,14 @@ static const struct of_device_id rspi_of_match[] = {
 
 MODULE_DEVICE_TABLE(of, rspi_of_match);
 
+static void rspi_reset_control_assert(void *data)
+{
+	reset_control_assert(data);
+}
+
 static int rspi_parse_dt(struct device *dev, struct spi_controller *ctlr)
 {
+	struct reset_control *rstc;
 	u32 num_cs;
 	int error;
 
@@ -1238,6 +1245,24 @@ static int rspi_parse_dt(struct device *dev, struct spi_controller *ctlr)
 	}
 
 	ctlr->num_chipselect = num_cs;
+
+	rstc = devm_reset_control_get_optional_exclusive(dev, NULL);
+	if (IS_ERR(rstc))
+		return dev_err_probe(dev, PTR_ERR(rstc),
+					     "failed to get reset ctrl\n");
+
+	error = reset_control_deassert(rstc);
+	if (error) {
+		dev_err(dev, "failed to deassert reset %d\n", error);
+		return error;
+	}
+
+	error = devm_add_action_or_reset(dev, rspi_reset_control_assert, rstc);
+	if (error) {
+		dev_err(dev, "failed to register assert devm action, %d\n", error);
+		return error;
+	}
+
 	return 0;
 }
 #else

drivers/spi/spi-tegra210-quad.c

@@ -877,7 +877,7 @@ static struct tegra_qspi_client_data *tegra_qspi_parse_cdata_dt(struct spi_devic
 	struct tegra_qspi_client_data *cdata;
 	struct device_node *slave_np = spi->dev.of_node;
 
-	cdata = kzalloc(sizeof(*cdata), GFP_KERNEL);
+	cdata = devm_kzalloc(&spi->dev, sizeof(*cdata), GFP_KERNEL);
 	if (!cdata)
 		return NULL;
 
@@ -888,14 +888,6 @@ static struct tegra_qspi_client_data *tegra_qspi_parse_cdata_dt(struct spi_devic
 	return cdata;
 }
 
-static void tegra_qspi_cleanup(struct spi_device *spi)
-{
-	struct tegra_qspi_client_data *cdata = spi->controller_data;
-
-	spi->controller_data = NULL;
-	kfree(cdata);
-}
-
 static int tegra_qspi_setup(struct spi_device *spi)
 {
 	struct tegra_qspi *tqspi = spi_master_get_devdata(spi->master);
@@ -1229,7 +1221,6 @@ static int tegra_qspi_probe(struct platform_device *pdev)
 			    SPI_TX_DUAL | SPI_RX_DUAL | SPI_TX_QUAD | SPI_RX_QUAD;
 	master->bits_per_word_mask = SPI_BPW_MASK(32) | SPI_BPW_MASK(16) | SPI_BPW_MASK(8);
 	master->setup = tegra_qspi_setup;
-	master->cleanup = tegra_qspi_cleanup;
 	master->transfer_one_message = tegra_qspi_transfer_one_message;
 	master->num_chipselect = 1;
 	master->auto_runtime_pm = true;

drivers/spi/spi-uniphier.c

@@ -767,12 +767,13 @@ static int uniphier_spi_probe(struct platform_device *pdev)
 
 static int uniphier_spi_remove(struct platform_device *pdev)
 {
-	struct uniphier_spi_priv *priv = platform_get_drvdata(pdev);
+	struct spi_master *master = platform_get_drvdata(pdev);
+	struct uniphier_spi_priv *priv = spi_master_get_devdata(master);
 
-	if (priv->master->dma_tx)
-		dma_release_channel(priv->master->dma_tx);
-	if (priv->master->dma_rx)
-		dma_release_channel(priv->master->dma_rx);
+	if (master->dma_tx)
+		dma_release_channel(master->dma_tx);
+	if (master->dma_rx)
+		dma_release_channel(master->dma_rx);
 
 	clk_disable_unprepare(priv->clk);
 

drivers/spi/spi-xlp.c

@@ -9,7 +9,6 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
-#include <linux/of.h>
 #include <linux/interrupt.h>
 
 /* SPI Configuration Register */
@@ -436,17 +435,10 @@ static const struct acpi_device_id xlp_spi_acpi_match[] = {
 MODULE_DEVICE_TABLE(acpi, xlp_spi_acpi_match);
 #endif
 
-static const struct of_device_id xlp_spi_dt_id[] = {
-	{ .compatible = "netlogic,xlp832-spi" },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, xlp_spi_dt_id);
-
 static struct platform_driver xlp_spi_driver = {
 	.probe	= xlp_spi_probe,
 	.driver = {
 		.name	= "xlp-spi",
-		.of_match_table = xlp_spi_dt_id,
 		.acpi_match_table = ACPI_PTR(xlp_spi_acpi_match),
 	},
 };

drivers/spi/spi.c

@@ -33,6 +33,7 @@
 #include <linux/highmem.h>
 #include <linux/idr.h>
 #include <linux/platform_data/x86/apple.h>
+#include <linux/ptp_clock_kernel.h>
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/spi.h>
@@ -311,15 +312,14 @@ static void spi_statistics_add_transfer_stats(struct spi_statistics *stats,
 	spin_unlock_irqrestore(&stats->lock, flags);
 }
 
-/* modalias support makes "modprobe $MODALIAS" new-style hotplug work,
+/*
+ * modalias support makes "modprobe $MODALIAS" new-style hotplug work,
  * and the sysfs version makes coldplug work too.
  */
-
-static const struct spi_device_id *spi_match_id(const struct spi_device_id *id,
-						const struct spi_device *sdev)
+static const struct spi_device_id *spi_match_id(const struct spi_device_id *id, const char *name)
 {
 	while (id->name[0]) {
-		if (!strcmp(sdev->modalias, id->name))
+		if (!strcmp(name, id->name))
 			return id;
 		id++;
 	}
@@ -330,7 +330,7 @@ const struct spi_device_id *spi_get_device_id(const struct spi_device *sdev)
 {
 	const struct spi_driver *sdrv = to_spi_driver(sdev->dev.driver);
 
-	return spi_match_id(sdrv->id_table, sdev);
+	return spi_match_id(sdrv->id_table, sdev->modalias);
 }
 EXPORT_SYMBOL_GPL(spi_get_device_id);
 
@@ -352,7 +352,7 @@ static int spi_match_device(struct device *dev, struct device_driver *drv)
 		return 1;
 
 	if (sdrv->id_table)
-		return !!spi_match_id(sdrv->id_table, spi);
+		return !!spi_match_id(sdrv->id_table, spi->modalias);
 
 	return strcmp(spi->modalias, drv->name) == 0;
 }
@@ -474,12 +474,8 @@ int __spi_register_driver(struct module *owner, struct spi_driver *sdrv)
 			if (sdrv->id_table) {
 				const struct spi_device_id *spi_id;
 
-				for (spi_id = sdrv->id_table; spi_id->name[0];
-				     spi_id++)
-					if (strcmp(spi_id->name, of_name) == 0)
-						break;
-
-				if (spi_id->name[0])
+				spi_id = spi_match_id(sdrv->id_table, of_name);
+				if (spi_id)
 					continue;
 			} else {
 				if (strcmp(sdrv->driver.name, of_name) == 0)
@@ -497,7 +493,8 @@ EXPORT_SYMBOL_GPL(__spi_register_driver);
 
 /*-------------------------------------------------------------------------*/
 
-/* SPI devices should normally not be created by SPI device drivers; that
+/*
+ * SPI devices should normally not be created by SPI device drivers; that
  * would make them board-specific.  Similarly with SPI controller drivers.
  * Device registration normally goes into like arch/.../mach.../board-YYY.c
  * with other readonly (flashable) information about mainboard devices.
@@ -513,8 +510,8 @@ static LIST_HEAD(spi_controller_list);
 
 /*
  * Used to protect add/del operation for board_info list and
- * spi_controller list, and their matching process
- * also used to protect object of type struct idr
+ * spi_controller list, and their matching process also used
+ * to protect object of type struct idr.
  */
 static DEFINE_MUTEX(board_lock);
 
@@ -621,7 +618,8 @@ static int __spi_add_device(struct spi_device *spi)
 	else if (ctlr->cs_gpios)
 		spi->cs_gpio = ctlr->cs_gpios[spi->chip_select];
 
-	/* Drivers may modify this initial i/o setup, but will
+	/*
+	 * Drivers may modify this initial i/o setup, but will
 	 * normally rely on the device being setup.  Devices
 	 * using SPI_CS_HIGH can't coexist well otherwise...
 	 */
@@ -715,7 +713,8 @@ struct spi_device *spi_new_device(struct spi_controller *ctlr,
 	struct spi_device	*proxy;
 	int			status;
 
-	/* NOTE:  caller did any chip->bus_num checks necessary.
+	/*
+	 * NOTE:  caller did any chip->bus_num checks necessary.
 	 *
 	 * Also, unless we change the return value convention to use
 	 * error-or-pointer (not NULL-or-pointer), troubleshootability
@@ -883,7 +882,6 @@ static void *spi_res_alloc(struct spi_device *spi, spi_res_release_t release,
 /**
  * spi_res_free - free an spi resource
  * @res: pointer to the custom data of a resource
- *
  */
 static void spi_res_free(void *res)
 {
@@ -947,12 +945,9 @@ static void spi_set_cs(struct spi_device *spi, bool enable, bool force)
 	spi->controller->last_cs_enable = enable;
 	spi->controller->last_cs_mode_high = spi->mode & SPI_CS_HIGH;
 
-	if (spi->cs_gpiod || gpio_is_valid(spi->cs_gpio) ||
-	    !spi->controller->set_cs_timing) {
-		if (activate)
-			spi_delay_exec(&spi->cs_setup, NULL);
-		else
-			spi_delay_exec(&spi->cs_hold, NULL);
+	if ((spi->cs_gpiod || gpio_is_valid(spi->cs_gpio) ||
+	    !spi->controller->set_cs_timing) && !activate) {
+		spi_delay_exec(&spi->cs_hold, NULL);
 	}
 
 	if (spi->mode & SPI_CS_HIGH)
@@ -978,7 +973,7 @@ static void spi_set_cs(struct spi_device *spi, bool enable, bool force)
 					gpiod_set_value_cansleep(spi->cs_gpiod, activate);
 			} else {
 				/*
-				 * invert the enable line, as active low is
+				 * Invert the enable line, as active low is
 				 * default for SPI.
 				 */
 				gpio_set_value_cansleep(spi->cs_gpio, !enable);
@@ -994,7 +989,9 @@ static void spi_set_cs(struct spi_device *spi, bool enable, bool force)
 
 	if (spi->cs_gpiod || gpio_is_valid(spi->cs_gpio) ||
 	    !spi->controller->set_cs_timing) {
-		if (!activate)
+		if (activate)
+			spi_delay_exec(&spi->cs_setup, NULL);
+		else
 			spi_delay_exec(&spi->cs_inactive, NULL);
 	}
 }
@@ -1227,11 +1224,10 @@ static int spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg)
 
 		if (max_tx) {
 			tmp = krealloc(ctlr->dummy_tx, max_tx,
-				       GFP_KERNEL | GFP_DMA);
+				       GFP_KERNEL | GFP_DMA | __GFP_ZERO);
 			if (!tmp)
 				return -ENOMEM;
 			ctlr->dummy_tx = tmp;
-			memset(tmp, 0, max_tx);
 		}
 
 		if (max_rx) {
@@ -1717,16 +1713,7 @@ static void spi_pump_messages(struct kthread_work *work)
 }
 
 /**
- * spi_take_timestamp_pre - helper for drivers to collect the beginning of the
- *			    TX timestamp for the requested byte from the SPI
- *			    transfer. The frequency with which this function
- *			    must be called (once per word, once for the whole
- *			    transfer, once per batch of words etc) is arbitrary
- *			    as long as the @tx buffer offset is greater than or
- *			    equal to the requested byte at the time of the
- *			    call. The timestamp is only taken once, at the
- *			    first such call. It is assumed that the driver
- *			    advances its @tx buffer pointer monotonically.
+ * spi_take_timestamp_pre - helper to collect the beginning of the TX timestamp
  * @ctlr: Pointer to the spi_controller structure of the driver
  * @xfer: Pointer to the transfer being timestamped
  * @progress: How many words (not bytes) have been transferred so far
@@ -1736,6 +1723,14 @@ static void spi_pump_messages(struct kthread_work *work)
  *	      spi_take_timestamp_post or otherwise system will crash.
  *	      WARNING: for fully predictable results, the CPU frequency must
  *	      also be under control (governor).
+ *
+ * This is a helper for drivers to collect the beginning of the TX timestamp
+ * for the requested byte from the SPI transfer. The frequency with which this
+ * function must be called (once per word, once for the whole transfer, once
+ * per batch of words etc) is arbitrary as long as the @tx buffer offset is
+ * greater than or equal to the requested byte at the time of the call. The
+ * timestamp is only taken once, at the first such call. It is assumed that
+ * the driver advances its @tx buffer pointer monotonically.
  */
 void spi_take_timestamp_pre(struct spi_controller *ctlr,
 			    struct spi_transfer *xfer,
@@ -1763,16 +1758,16 @@ void spi_take_timestamp_pre(struct spi_controller *ctlr,
 EXPORT_SYMBOL_GPL(spi_take_timestamp_pre);
 
 /**
- * spi_take_timestamp_post - helper for drivers to collect the end of the
- *			     TX timestamp for the requested byte from the SPI
- *			     transfer. Can be called with an arbitrary
- *			     frequency: only the first call where @tx exceeds
- *			     or is equal to the requested word will be
- *			     timestamped.
+ * spi_take_timestamp_post - helper to collect the end of the TX timestamp
  * @ctlr: Pointer to the spi_controller structure of the driver
  * @xfer: Pointer to the transfer being timestamped
  * @progress: How many words (not bytes) have been transferred so far
  * @irqs_off: If true, will re-enable IRQs and preemption for the local CPU.
+ *
+ * This is a helper for drivers to collect the end of the TX timestamp for
+ * the requested byte from the SPI transfer. Can be called with an arbitrary
+ * frequency: only the first call where @tx exceeds or is equal to the
+ * requested word will be timestamped.
  */
 void spi_take_timestamp_post(struct spi_controller *ctlr,
 			     struct spi_transfer *xfer,
@@ -1905,10 +1900,12 @@ void spi_finalize_current_message(struct spi_controller *ctlr)
 
 	spi_unmap_msg(ctlr, mesg);
 
-	/* In the prepare_messages callback the spi bus has the opportunity to
-	 * split a transfer to smaller chunks.
-	 * Release splited transfers here since spi_map_msg is done on the
-	 * splited transfers.
+	/*
+	 * In the prepare_messages callback the SPI bus has the opportunity
+	 * to split a transfer to smaller chunks.
+	 *
+	 * Release the split transfers here since spi_map_msg() is done on
+	 * the split transfers.
 	 */
 	spi_res_release(ctlr, mesg);
 
@@ -2950,8 +2947,9 @@ int spi_register_controller(struct spi_controller *ctlr)
 	if (!ctlr->max_dma_len)
 		ctlr->max_dma_len = INT_MAX;
 
-	/* register the device, then userspace will see it.
-	 * registration fails if the bus ID is in use.
+	/*
+	 * Register the device, then userspace will see it.
+	 * Registration fails if the bus ID is in use.
 	 */
 	dev_set_name(&ctlr->dev, "spi%u", ctlr->bus_num);
 
@@ -3217,16 +3215,18 @@ static struct spi_replaced_transfers *spi_replace_transfers(
 	/* init the replaced_transfers list */
 	INIT_LIST_HEAD(&rxfer->replaced_transfers);
 
-	/* assign the list_entry after which we should reinsert
+	/*
+	 * Assign the list_entry after which we should reinsert
 	 * the @replaced_transfers - it may be spi_message.messages!
 	 */
 	rxfer->replaced_after = xfer_first->transfer_list.prev;
 
 	/* remove the requested number of transfers */
 	for (i = 0; i < remove; i++) {
-		/* if the entry after replaced_after it is msg->transfers
+		/*
+		 * If the entry after replaced_after it is msg->transfers
 		 * then we have been requested to remove more transfers
-		 * than are in the list
+		 * than are in the list.
 		 */
 		if (rxfer->replaced_after->next == &msg->transfers) {
 			dev_err(&msg->spi->dev,
@@ -3242,15 +3242,17 @@ static struct spi_replaced_transfers *spi_replace_transfers(
 			return ERR_PTR(-EINVAL);
 		}
 
-		/* remove the entry after replaced_after from list of
-		 * transfers and add it to list of replaced_transfers
+		/*
+		 * Remove the entry after replaced_after from list of
+		 * transfers and add it to list of replaced_transfers.
 		 */
 		list_move_tail(rxfer->replaced_after->next,
 			       &rxfer->replaced_transfers);
 	}
 
-	/* create copy of the given xfer with identical settings
-	 * based on the first transfer to get removed
+	/*
+	 * Create copy of the given xfer with identical settings
+	 * based on the first transfer to get removed.
 	 */
 	for (i = 0; i < insert; i++) {
 		/* we need to run in reverse order */
@@ -3298,18 +3300,20 @@ static int __spi_split_transfer_maxsize(struct spi_controller *ctlr,
 		return PTR_ERR(srt);
 	xfers = srt->inserted_transfers;
 
-	/* now handle each of those newly inserted spi_transfers
-	 * note that the replacements spi_transfers all are preset
+	/*
+	 * Now handle each of those newly inserted spi_transfers.
+	 * Note that the replacements spi_transfers all are preset
 	 * to the same values as *xferp, so tx_buf, rx_buf and len
 	 * are all identical (as well as most others)
 	 * so we just have to fix up len and the pointers.
 	 *
-	 * this also includes support for the depreciated
-	 * spi_message.is_dma_mapped interface
+	 * This also includes support for the depreciated
+	 * spi_message.is_dma_mapped interface.
 	 */
 
-	/* the first transfer just needs the length modified, so we
-	 * run it outside the loop
+	/*
+	 * The first transfer just needs the length modified, so we
+	 * run it outside the loop.
 	 */
 	xfers[0].len = min_t(size_t, maxsize, xfer[0].len);
 
@@ -3329,8 +3333,9 @@ static int __spi_split_transfer_maxsize(struct spi_controller *ctlr,
 		xfers[i].len = min(maxsize, xfers[i].len - offset);
 	}
 
-	/* we set up xferp to the last entry we have inserted,
-	 * so that we skip those already split transfers
+	/*
+	 * We set up xferp to the last entry we have inserted,
+	 * so that we skip those already split transfers.
 	 */
 	*xferp = &xfers[count - 1];
 
@@ -3362,11 +3367,12 @@ int spi_split_transfers_maxsize(struct spi_controller *ctlr,
 	struct spi_transfer *xfer;
 	int ret;
 
-	/* iterate over the transfer_list,
+	/*
+	 * Iterate over the transfer_list,
 	 * but note that xfer is advanced to the last transfer inserted
 	 * to avoid checking sizes again unnecessarily (also xfer does
-	 * potentiall belong to a different list by the time the
-	 * replacement has happened
+	 * potentially belong to a different list by the time the
+	 * replacement has happened).
 	 */
 	list_for_each_entry(xfer, &msg->transfers, transfer_list) {
 		if (xfer->len > maxsize) {
@@ -3427,8 +3433,8 @@ int spi_setup(struct spi_device *spi)
 	int		status;
 
 	/*
-	 * check mode to prevent that any two of DUAL, QUAD and NO_MOSI/MISO
-	 * are 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 ((hweight_long(spi->mode &
 		(SPI_TX_DUAL | SPI_TX_QUAD | SPI_NO_TX)) > 1) ||
@@ -3438,20 +3444,21 @@ int spi_setup(struct spi_device *spi)
 		"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
-	 */
+	/* If it is SPI_3WIRE mode, DUAL and QUAD should be forbidden */
 	if ((spi->mode & SPI_3WIRE) && (spi->mode &
 		(SPI_TX_DUAL | SPI_TX_QUAD | SPI_TX_OCTAL |
 		 SPI_RX_DUAL | SPI_RX_QUAD | SPI_RX_OCTAL)))
 		return -EINVAL;
-	/* help drivers fail *cleanly* when they need options
-	 * that aren't supported with their current controller
+	/*
+	 * Help drivers fail *cleanly* when they need options
+	 * that aren't supported with their current controller.
 	 * SPI_CS_WORD has a fallback software implementation,
 	 * so it is ignored here.
 	 */
 	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
+	/*
+	 * Nothing prevents from working with active-high CS in case if it
 	 * is driven by GPIO.
 	 */
 	if (gpio_is_valid(spi->cs_gpio))
@@ -3573,7 +3580,8 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
 	if (list_empty(&message->transfers))
 		return -EINVAL;
 
-	/* If an SPI controller does not support toggling the CS line on each
+	/*
+	 * If an SPI controller does not support toggling the CS line on each
 	 * transfer (indicated by the SPI_CS_WORD flag) or we are using a GPIO
 	 * for the CS line, we can emulate the CS-per-word hardware function by
 	 * splitting transfers into one-word transfers and ensuring that
@@ -3603,7 +3611,8 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
 		}
 	}
 
-	/* Half-duplex links include original MicroWire, and ones with
+	/*
+	 * Half-duplex links include original MicroWire, and ones with
 	 * only one data pin like SPI_3WIRE (switches direction) or where
 	 * either MOSI or MISO is missing.  They can also be caused by
 	 * software limitations.
@@ -3622,7 +3631,7 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
 		}
 	}
 
-	/**
+	/*
 	 * Set transfer bits_per_word and max speed as spi device default if
 	 * it is not set for this transfer.
 	 * Set transfer tx_nbits and rx_nbits as single transfer default
@@ -3648,7 +3657,7 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
 
 		/*
 		 * SPI transfer length should be multiple of SPI word size
-		 * where SPI word size should be power-of-two multiple
+		 * where SPI word size should be power-of-two multiple.
 		 */
 		if (xfer->bits_per_word <= 8)
 			w_size = 1;
@@ -3669,7 +3678,8 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
 			xfer->tx_nbits = SPI_NBITS_SINGLE;
 		if (xfer->rx_buf && !xfer->rx_nbits)
 			xfer->rx_nbits = SPI_NBITS_SINGLE;
-		/* check transfer tx/rx_nbits:
+		/*
+		 * Check transfer tx/rx_nbits:
 		 * 1. check the value matches one of single, dual and quad
 		 * 2. check tx/rx_nbits match the mode in spi_device
 		 */
@@ -3848,7 +3858,8 @@ static int spi_async_locked(struct spi_device *spi, struct spi_message *message)
 
 /*-------------------------------------------------------------------------*/
 
-/* Utility methods for SPI protocol drivers, layered on
+/*
+ * Utility methods for SPI protocol drivers, layered on
  * top of the core.  Some other utility methods are defined as
  * inline functions.
  */
@@ -3876,7 +3887,8 @@ static int __spi_sync(struct spi_device *spi, struct spi_message *message)
 	SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics, spi_sync);
 	SPI_STATISTICS_INCREMENT_FIELD(&spi->statistics, spi_sync);
 
-	/* If we're not using the legacy transfer method then we will
+	/*
+	 * If we're not using the legacy transfer method then we will
 	 * try to transfer in the calling context so special case.
 	 * This code would be less tricky if we could remove the
 	 * support for driver implemented message queues.
@@ -3894,9 +3906,7 @@ static int __spi_sync(struct spi_device *spi, struct spi_message *message)
 	}
 
 	if (status == 0) {
-		/* Push out the messages in the calling context if we
-		 * can.
-		 */
+		/* Push out the messages in the calling context if we can */
 		if (ctlr->transfer == spi_queued_transfer) {
 			SPI_STATISTICS_INCREMENT_FIELD(&ctlr->statistics,
 						       spi_sync_immediate);
@@ -4057,7 +4067,8 @@ int spi_write_then_read(struct spi_device *spi,
 	struct spi_transfer	x[2];
 	u8			*local_buf;
 
-	/* Use preallocated DMA-safe buffer if we can.  We can't avoid
+	/*
+	 * Use preallocated DMA-safe buffer if we can. We can't avoid
 	 * copying here, (as a pure convenience thing), but we can
 	 * keep heap costs out of the hot path unless someone else is
 	 * using the pre-allocated buffer or the transfer is too large.
@@ -4293,11 +4304,12 @@ static int __init spi_init(void)
 	return status;
 }
 
-/* board_info is normally registered in arch_initcall(),
- * but even essential drivers wait till later
+/*
+ * A board_info is normally registered in arch_initcall(),
+ * but even essential drivers wait till later.
  *
- * REVISIT only boardinfo really needs static linking. the rest (device and
- * driver registration) _could_ be dynamically linked (modular) ... costs
+ * REVISIT only boardinfo really needs static linking. The rest (device and
+ * driver registration) _could_ be dynamically linked (modular) ... Costs
  * include needing to have boardinfo data structures be much more public.
  */
 postcore_initcall(spi_init);

drivers/spi/spidev.c

@@ -415,7 +415,7 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 				tmp |= SPI_CS_HIGH;
 
 			tmp |= spi->mode & ~SPI_MODE_MASK;
-			spi->mode = (u16)tmp;
+			spi->mode = tmp & SPI_MODE_USER_MASK;
 			retval = spi_setup(spi);
 			if (retval < 0)
 				spi->mode = save;
@@ -751,9 +751,10 @@ static int spidev_probe(struct spi_device *spi)
 	 * compatible string, it is a Linux implementation thing
 	 * rather than a description of the hardware.
 	 */
-	WARN(spi->dev.of_node &&
-	     of_device_is_compatible(spi->dev.of_node, "spidev"),
-	     "%pOF: buggy DT: spidev listed directly in DT\n", spi->dev.of_node);
+	if (spi->dev.of_node && of_device_is_compatible(spi->dev.of_node, "spidev")) {
+		dev_err(&spi->dev, "spidev listed directly in DT is not supported\n");
+		return -EINVAL;
+	}
 
 	spidev_probe_acpi(spi);
 

include/linux/platform_data/spi-clps711x.h

-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- *  CLPS711X SPI bus driver definitions
- *
- *  Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru>
- */
-
-#ifndef ____LINUX_PLATFORM_DATA_SPI_CLPS711X_H
-#define ____LINUX_PLATFORM_DATA_SPI_CLPS711X_H
-
-/* Board specific platform_data */
-struct spi_clps711x_pdata {
-	int *chipselect;	/* Array of GPIO-numbers */
-	int num_chipselect;	/* Total count of GPIOs */
-};
-
-#endif

include/linux/spi/pxa2xx_spi.h

@@ -9,9 +9,6 @@
 
 #include <linux/pxa2xx_ssp.h>
 
-#define PXA2XX_CS_ASSERT (0x01)
-#define PXA2XX_CS_DEASSERT (0x02)
-
 struct dma_chan;
 
 /*
@@ -45,9 +42,7 @@ struct pxa2xx_spi_chip {
 	u8 rx_threshold;
 	u8 dma_burst_size;
 	u32 timeout;
-	u8 enable_loopback;
 	int gpio_cs;
-	void (*cs_control)(u32 command);
 };
 
 #if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP)

include/linux/spi/spi.h

@@ -14,12 +14,12 @@
 #include <linux/completion.h>
 #include <linux/scatterlist.h>
 #include <linux/gpio/consumer.h>
-#include <linux/ptp_clock_kernel.h>
 
 #include <uapi/linux/spi/spi.h>
 
 struct dma_chan;
 struct software_node;
+struct ptp_system_timestamp;
 struct spi_controller;
 struct spi_transfer;
 struct spi_controller_mem_ops;