Merge tag 'mmc-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC host:
   - Convert from using tasklet to the BH workqueue
   - dw_mmc-bluefield: Add support for eMMC HW reset
   - mmc_spi: Allow spi controllers incapable of lower than 400kHz
   - sdhci: Rework code to eliminate SDHCI_QUIRK_UNSTABLE_RO_DETECT
   - sdhci-brcmstb: Add support for the BCM2712 variant
   - sdhci-esdhc-imx: Disable card-detect as system wakeup on S32G platforms
   - sdhci-msm: Add support for the SDX75 variant
   - sdhci-of-dwcmshc: Enable CQE support for some Rockchip variants
   - sdhci-of-esdhc: Convert DT-bindings to yaml
   - sdhci-sprd: Convert DT-bindings to yaml

  MEMSTICK:
   - rtsx_pci_ms: Remove the unused Realtek PCI memstick driver"

* tag 'mmc-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (26 commits)
  MAINTAINERS: add 's32@nxp.com' as relevant mailing list for 'sdhci-esdhc-imx' driver
  mmc: sdhci-esdhc-imx: obtain the 'per' clock rate after its enablement
  mmc: sdhci-esdhc-imx: disable card detect wake for S32G based platforms
  dt-bindings: mmc: sdhci-sprd: convert to YAML
  mmc: davinci_mmc: report all possible bus widths
  mmc: dw_mmc-bluefield: Add support for eMMC HW reset
  mmc: dw_mmc: Add support for platform specific eMMC HW reset
  mmc: sdhci_am654: Constify struct regmap_config
  mmc: Convert from tasklet to BH workqueue
  mmc: sdhi: Convert from tasklet to BH workqueue
  mmc: mmc_spi: allow for spi controllers incapable of getting as low as 400k
  memstick: rtsx_pci_ms: Remove Realtek PCI memstick driver
  MAINTAINERS: drop entry for VIA SD/MMC controller
  mmc: tmio: Remove obsolete .set_pwr() callback()
  mfd: tmio: Remove obsolete .set_clk_div() callback
  mmc: sdhci-brcmstb: Add ARCH_BCM2835 option
  mmc: sdhci: Eliminate SDHCI_QUIRK_UNSTABLE_RO_DETECT
  dt-bindings: mmc: Convert fsl-esdhc.txt to yaml
  dt-bindings: mmc: mmc-spi-slot: Change voltage-ranges to uint32-matrix
  mmc: add missing MODULE_DESCRIPTION() macros
  ...

Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml

@@ -23,6 +23,12 @@ properties:
               - raspberrypi,4-model-b
           - const: brcm,bcm2711
 
+      - description: BCM2712 based Boards
+        items:
+          - enum:
+              - raspberrypi,5-model-b
+          - const: brcm,bcm2712
+
       - description: BCM2835 based Boards
         items:
           - enum:

Documentation/devicetree/bindings/mmc/amlogic,meson-gx-mmc.yaml

@@ -51,6 +51,9 @@ properties:
       set when controller's internal DMA engine cannot access the DRAM memory,
       like on the G12A dedicated SDIO controller.
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg

Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml

@@ -20,6 +20,7 @@ properties:
           - const: brcm,sdhci-brcmstb
       - items:
           - enum:
+              - brcm,bcm2712-sdhci
               - brcm,bcm74165b0-sdhci
               - brcm,bcm7445-sdhci
               - brcm,bcm7425-sdhci

Documentation/devicetree/bindings/mmc/fsl,esdhc.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/fsl,esdhc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale Enhanced Secure Digital Host Controller (eSDHC)
+
+description:
+  The Enhanced Secure Digital Host Controller provides an interface
+  for MMC, SD, and SDIO types of memory cards.
+
+maintainers:
+  - Frank Li <Frank.Li@nxp.com>
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - fsl,mpc8536-esdhc
+          - fsl,mpc8378-esdhc
+          - fsl,p2020-esdhc
+          - fsl,p4080-esdhc
+          - fsl,t1040-esdhc
+          - fsl,t4240-esdhc
+          - fsl,ls1012a-esdhc
+          - fsl,ls1028a-esdhc
+          - fsl,ls1088a-esdhc
+          - fsl,ls1043a-esdhc
+          - fsl,ls1046a-esdhc
+          - fsl,ls2080a-esdhc
+      - const: fsl,esdhc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-frequency:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: specifies eSDHC base clock frequency.
+
+  sdhci,wp-inverted:
+    $ref: /schemas/types.yaml#/definitions/flag
+    deprecated: true
+    description:
+      specifies that eSDHC controller reports
+      inverted write-protect state; New devices should use the generic
+      "wp-inverted" property.
+
+  sdhci,1-bit-only:
+    $ref: /schemas/types.yaml#/definitions/flag
+    deprecated: true
+    description:
+      specifies that a controller can only handle
+      1-bit data transfers. New devices should use the generic
+      "bus-width = <1>" property.
+
+  sdhci,auto-cmd12:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      specifies that a controller can only handle auto CMD12.
+
+  voltage-ranges:
+    $ref: /schemas/types.yaml#/definitions/uint32-matrix
+    items:
+      items:
+        - description: specifies minimum slot voltage (mV).
+        - description: specifies maximum slot voltage (mV).
+    minItems: 1
+    maxItems: 8
+
+  dma-coherent: true
+
+  little-endian:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      If the host controller is little-endian mode, specify
+      this property. The default endian mode is big-endian.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+allOf:
+  - $ref: sdhci-common.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    mmc@2e000 {
+        compatible = "fsl,mpc8378-esdhc", "fsl,esdhc";
+        reg = <0x2e000 0x1000>;
+        interrupts = <42 0x8>;
+        interrupt-parent = <&ipic>;
+        /* Filled in by U-Boot */
+        clock-frequency = <100000000>;
+        voltage-ranges = <3300 3300>;
+    };

Documentation/devicetree/bindings/mmc/fsl-esdhc.txt

-* Freescale Enhanced Secure Digital Host Controller (eSDHC)
-
-The Enhanced Secure Digital Host Controller provides an interface
-for MMC, SD, and SDIO types of memory cards.
-
-This file documents differences between the core properties described
-by mmc.txt and the properties used by the sdhci-esdhc driver.
-
-Required properties:
-  - compatible : should be "fsl,esdhc", or "fsl,<chip>-esdhc".
-    Possible compatibles for PowerPC:
-	"fsl,mpc8536-esdhc"
-	"fsl,mpc8378-esdhc"
-	"fsl,p2020-esdhc"
-	"fsl,p4080-esdhc"
-	"fsl,t1040-esdhc"
-	"fsl,t4240-esdhc"
-    Possible compatibles for ARM:
-	"fsl,ls1012a-esdhc"
-	"fsl,ls1028a-esdhc"
-	"fsl,ls1088a-esdhc"
-	"fsl,ls1043a-esdhc"
-	"fsl,ls1046a-esdhc"
-	"fsl,ls2080a-esdhc"
-  - clock-frequency : specifies eSDHC base clock frequency.
-
-Optional properties:
-  - sdhci,wp-inverted : specifies that eSDHC controller reports
-    inverted write-protect state; New devices should use the generic
-    "wp-inverted" property.
-  - sdhci,1-bit-only : specifies that a controller can only handle
-    1-bit data transfers. New devices should use the generic
-    "bus-width = <1>" property.
-  - sdhci,auto-cmd12: specifies that a controller can only handle auto
-    CMD12.
-  - voltage-ranges : two cells are required, first cell specifies minimum
-    slot voltage (mV), second cell specifies maximum slot voltage (mV).
-    Several ranges could be specified.
-  - little-endian : If the host controller is little-endian mode, specify
-    this property. The default endian mode is big-endian.
-
-Example:
-
-sdhci@2e000 {
-	compatible = "fsl,mpc8378-esdhc", "fsl,esdhc";
-	reg = <0x2e000 0x1000>;
-	interrupts = <42 0x8>;
-	interrupt-parent = <&ipic>;
-	/* Filled in by U-Boot */
-	clock-frequency = <0>;
-	voltage-ranges = <3300 3300>;
-};

Documentation/devicetree/bindings/mmc/mmc-spi-slot.yaml

@@ -27,17 +27,19 @@ properties:
     maxItems: 1
 
   voltage-ranges:
-    $ref: /schemas/types.yaml#/definitions/uint32-array
+    $ref: /schemas/types.yaml#/definitions/uint32-matrix
     description: |
       Two cells are required, first cell specifies minimum slot voltage (mV),
       second cell specifies maximum slot voltage (mV).
     items:
-      - description: |
-          value for minimum slot voltage in mV
-        default: 3200
-      - description: |
-          value for maximum slot voltage in mV
-        default: 3400
+      items:
+        - description: |
+            value for minimum slot voltage in mV
+          default: 3200
+        - description: |
+            value for maximum slot voltage in mV
+          default: 3400
+    maxItems: 1
 
   gpios:
     description: |

Documentation/devicetree/bindings/mmc/sdhci-msm.yaml

@@ -51,6 +51,7 @@ properties:
               - qcom,sdm845-sdhci
               - qcom,sdx55-sdhci
               - qcom,sdx65-sdhci
+              - qcom,sdx75-sdhci
               - qcom,sm6115-sdhci
               - qcom,sm6125-sdhci
               - qcom,sm6350-sdhci

Documentation/devicetree/bindings/mmc/sdhci-sprd.txt

-* Spreadtrum SDHCI controller (sdhci-sprd)
-
-The Secure Digital (SD) Host controller on Spreadtrum SoCs provides an interface
-for MMC, SD and SDIO types of cards.
-
-This file documents differences between the core properties in mmc.txt
-and the properties used by the sdhci-sprd driver.
-
-Required properties:
-- compatible: Should contain "sprd,sdhci-r11".
-- reg: physical base address of the controller and length.
-- interrupts: Interrupts used by the SDHCI controller.
-- clocks: Should contain phandle for the clock feeding the SDHCI controller
-- clock-names: Should contain the following:
-	"sdio" - SDIO source clock (required)
-	"enable" - gate clock which used for enabling/disabling the device (required)
-	"2x_enable" - gate clock controlling the device for some special platforms (optional)
-
-Optional properties:
-- assigned-clocks: the same with "sdio" clock
-- assigned-clock-parents: the default parent of "sdio" clock
-- pinctrl-names: should be "default", "state_uhs"
-- pinctrl-0: should contain default/high speed pin control
-- pinctrl-1: should contain uhs mode pin control
-
-PHY DLL delays are used to delay the data valid window, and align the window
-to sampling clock. PHY DLL delays can be configured by following properties,
-and each property contains 4 cells which are used to configure the clock data
-write line delay value, clock read command line delay value, clock read data
-positive edge delay value and clock read data negative edge delay value.
-Each cell's delay value unit is cycle of the PHY clock.
-
-- sprd,phy-delay-legacy: Delay value for legacy timing.
-- sprd,phy-delay-sd-highspeed: Delay value for SD high-speed timing.
-- sprd,phy-delay-sd-uhs-sdr50: Delay value for SD UHS SDR50 timing.
-- sprd,phy-delay-sd-uhs-sdr104: Delay value for SD UHS SDR50 timing.
-- sprd,phy-delay-mmc-highspeed: Delay value for MMC high-speed timing.
-- sprd,phy-delay-mmc-ddr52: Delay value for MMC DDR52 timing.
-- sprd,phy-delay-mmc-hs200: Delay value for MMC HS200 timing.
-- sprd,phy-delay-mmc-hs400: Delay value for MMC HS400 timing.
-- sprd,phy-delay-mmc-hs400es: Delay value for MMC HS400 enhanced strobe timing.
-
-Examples:
-
-sdio0: sdio@20600000 {
-	compatible  = "sprd,sdhci-r11";
-	reg = <0 0x20600000 0 0x1000>;
-	interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
-
-	clock-names = "sdio", "enable";
-	clocks = <&ap_clk CLK_EMMC_2X>,
-		 <&apahb_gate CLK_EMMC_EB>;
-	assigned-clocks = <&ap_clk CLK_EMMC_2X>;
-	assigned-clock-parents = <&rpll CLK_RPLL_390M>;
-
-	pinctrl-names = "default", "state_uhs";
-	pinctrl-0 = <&sd0_pins_default>;
-	pinctrl-1 = <&sd0_pins_uhs>;
-
-	sprd,phy-delay-sd-uhs-sdr104 = <0x3f 0x7f 0x2e 0x2e>;
-	bus-width = <8>;
-	non-removable;
-	no-sdio;
-	no-sd;
-	cap-mmc-hw-reset;
-	status = "okay";
-};

Documentation/devicetree/bindings/mmc/sprd,sdhci-r11.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/sprd,sdhci-r11.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Spreadtrum SDHCI controller
+
+maintainers:
+  - Orson Zhai <orsonzhai@gmail.com>
+  - Baolin Wang <baolin.wang7@gmail.com>
+  - Chunyan Zhang <zhang.lyra@gmail.com>
+
+properties:
+  compatible:
+    const: sprd,sdhci-r11
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 2
+    items:
+      - description: SDIO source clock
+      - description: gate clock for enabling/disabling the device
+      - description: gate clock controlling the device for some special platforms (optional)
+
+  clock-names:
+    minItems: 2
+    items:
+      - const: sdio
+      - const: enable
+      - const: 2x_enable
+
+  pinctrl-0:
+    description: default/high speed pin control
+    maxItems: 1
+
+  pinctrl-1:
+    description: UHS mode pin control
+    maxItems: 1
+
+  pinctrl-names:
+    minItems: 1
+    items:
+      - const: default
+      - const: state_uhs
+
+patternProperties:
+  "^sprd,phy-delay-(legacy|mmc-(ddr52|highspeed|hs[24]00|hs400es)|sd-(highspeed|uhs-sdr(50|104)))$":
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    items:
+      - description: clock data write line delay value
+      - description: clock read command line delay value
+      - description: clock read data positive edge delay value
+      - description: clock read data negative edge delay value
+    description:
+      PHY DLL delays are used to delay the data valid window, and align
+      the window to the sampling clock. Each cell's delay value unit is
+      cycle of the PHY clock.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+allOf:
+  - $ref: sdhci-common.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/sprd,sc9860-clk.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    mmc@50430000 {
+      compatible = "sprd,sdhci-r11";
+      reg = <0x50430000 0x1000>;
+      interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
+
+      clocks = <&aon_prediv CLK_EMMC_2X>,
+               <&apahb_gate CLK_EMMC_EB>,
+               <&aon_gate CLK_EMMC_2X_EN>;
+      clock-names = "sdio", "enable", "2x_enable";
+
+      pinctrl-0 = <&sd0_pins_default>;
+      pinctrl-1 = <&sd0_pins_uhs>;
+      pinctrl-names = "default", "state_uhs";
+
+      bus-width = <8>;
+      cap-mmc-hw-reset;
+      mmc-hs400-enhanced-strobe;
+      mmc-hs400-1_8v;
+      mmc-hs200-1_8v;
+      mmc-ddr-1_8v;
+      non-removable;
+      no-sdio;
+      no-sd;
+
+      sprd,phy-delay-mmc-ddr52 = <0x3f 0x75 0x14 0x14>;
+      sprd,phy-delay-mmc-hs200 = <0x0 0x8c 0x8c 0x8c>;
+      sprd,phy-delay-mmc-hs400 = <0x44 0x7f 0x2e 0x2e>;
+      sprd,phy-delay-mmc-hs400es = <0x3f 0x3f 0x2e 0x2e>;
+    };
+...

MAINTAINERS

@@ -20156,6 +20156,7 @@ SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) NXP i.MX DRIVER
 M:	Haibo Chen <haibo.chen@nxp.com>
 L:	imx@lists.linux.dev
 L:	linux-mmc@vger.kernel.org
+L:	s32@nxp.com
 S:	Maintained
 F:	drivers/mmc/host/sdhci-esdhc-imx.c
 
@@ -23702,12 +23703,6 @@ M:	Kevin Brace <kevinbrace@bracecomputerlab.com>
 S:	Maintained
 F:	drivers/net/ethernet/via/via-rhine.c
 
-VIA SD/MMC CARD CONTROLLER DRIVER
-M:	Bruce Chang <brucechang@via.com.tw>
-M:	Harald Welte <HaraldWelte@viatech.com>
-S:	Maintained
-F:	drivers/mmc/host/via-sdmmc.c
-
 VIA UNICHROME(PRO)/CHROME9 FRAMEBUFFER DRIVER
 M:	Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
 L:	linux-fbdev@vger.kernel.org

drivers/memstick/host/Kconfig

@@ -44,16 +44,6 @@ config MEMSTICK_R592
 	  To compile this driver as a module, choose M here: the module will
 	  be called r592.
 
-config MEMSTICK_REALTEK_PCI
-	tristate "Realtek PCI-E Memstick Card Interface Driver"
-	depends on MISC_RTSX_PCI
-	help
-	  Say Y here to include driver code to support Memstick card interface
-	  of Realtek PCI-E card reader
-
-	  To compile this driver as a module, choose M here: the module will
-	  be called rtsx_pci_ms.
-
 config MEMSTICK_REALTEK_USB
 	tristate "Realtek USB Memstick Card Interface Driver"
 	depends on MISC_RTSX_USB

drivers/memstick/host/Makefile

@@ -6,5 +6,4 @@
 obj-$(CONFIG_MEMSTICK_TIFM_MS)		+= tifm_ms.o
 obj-$(CONFIG_MEMSTICK_JMICRON_38X)	+= jmb38x_ms.o
 obj-$(CONFIG_MEMSTICK_R592)		+= r592.o
-obj-$(CONFIG_MEMSTICK_REALTEK_PCI)	+= rtsx_pci_ms.o
 obj-$(CONFIG_MEMSTICK_REALTEK_USB)	+= rtsx_usb_ms.o

drivers/mmc/core/core.c

@@ -2362,4 +2362,5 @@ static void __exit mmc_exit(void)
 subsys_initcall(mmc_init);
 module_exit(mmc_exit);
 
+MODULE_DESCRIPTION("MMC core driver");
 MODULE_LICENSE("GPL");

drivers/mmc/core/pwrseq_emmc.c

@@ -115,4 +115,5 @@ static struct platform_driver mmc_pwrseq_emmc_driver = {
 };
 
 module_platform_driver(mmc_pwrseq_emmc_driver);
+MODULE_DESCRIPTION("Hardware reset support for eMMC");
 MODULE_LICENSE("GPL v2");

drivers/mmc/core/pwrseq_sd8787.c

@@ -130,4 +130,5 @@ static struct platform_driver mmc_pwrseq_sd8787_driver = {
 };
 
 module_platform_driver(mmc_pwrseq_sd8787_driver);
+MODULE_DESCRIPTION("Power sequence support for Marvell SD8787 BT + Wifi chip");
 MODULE_LICENSE("GPL v2");

drivers/mmc/core/pwrseq_simple.c

@@ -159,4 +159,5 @@ static struct platform_driver mmc_pwrseq_simple_driver = {
 };
 
 module_platform_driver(mmc_pwrseq_simple_driver);
+MODULE_DESCRIPTION("Simple power sequence management for MMC");
 MODULE_LICENSE("GPL v2");

drivers/mmc/core/sdio_uart.c

@@ -1162,4 +1162,5 @@ module_init(sdio_uart_init);
 module_exit(sdio_uart_exit);
 
 MODULE_AUTHOR("Nicolas Pitre");
+MODULE_DESCRIPTION("SDIO UART/GPS driver");
 MODULE_LICENSE("GPL");

drivers/mmc/host/Kconfig

@@ -1016,7 +1016,7 @@ config MMC_SDHCI_MICROCHIP_PIC32
 
 config MMC_SDHCI_BRCMSTB
 	tristate "Broadcom SDIO/SD/MMC support"
-	depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
+	depends on ARCH_BRCMSTB || ARCH_BCM2835 || BMIPS_GENERIC || COMPILE_TEST
 	depends on MMC_SDHCI_PLTFM
 	select MMC_CQHCI
 	default ARCH_BRCMSTB || BMIPS_GENERIC

drivers/mmc/host/atmel-mci.c

@@ -33,6 +33,7 @@
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
 #include <linux/pinctrl/consumer.h>
+#include <linux/workqueue.h>
 
 #include <asm/cacheflush.h>
 #include <asm/io.h>
@@ -272,12 +273,12 @@ struct atmel_mci_dma {
  *	EVENT_DATA_ERROR is pending.
  * @stop_cmdr: Value to be loaded into CMDR when the stop command is
  *	to be sent.
- * @tasklet: Tasklet running the request state machine.
+ * @bh_work: Work running the request state machine.
  * @pending_events: Bitmask of events flagged by the interrupt handler
- *	to be processed by the tasklet.
+ *	to be processed by the work.
  * @completed_events: Bitmask of events which the state machine has
  *	processed.
- * @state: Tasklet state.
+ * @state: Work state.
  * @queue: List of slots waiting for access to the controller.
  * @need_clock_update: Update the clock rate before the next request.
  * @need_reset: Reset controller before next request.
@@ -352,7 +353,7 @@ struct atmel_mci {
 	u32			data_status;
 	u32			stop_cmdr;
 
-	struct tasklet_struct	tasklet;
+	struct work_struct	bh_work;
 	unsigned long		pending_events;
 	unsigned long		completed_events;
 	enum atmel_mci_state	state;
@@ -735,7 +736,7 @@ static void atmci_timeout_timer(struct timer_list *t)
 	host->need_reset = 1;
 	host->state = STATE_END_REQUEST;
 	smp_wmb();
-	tasklet_schedule(&host->tasklet);
+	queue_work(system_bh_wq, &host->bh_work);
 }
 
 static inline unsigned int atmci_ns_to_clocks(struct atmel_mci *host,
@@ -958,7 +959,7 @@ static void atmci_pdc_complete(struct atmel_mci *host)
 
 	dev_dbg(dev, "(%s) set pending xfer complete\n", __func__);
 	atmci_set_pending(host, EVENT_XFER_COMPLETE);
-	tasklet_schedule(&host->tasklet);
+	queue_work(system_bh_wq, &host->bh_work);
 }
 
 static void atmci_dma_cleanup(struct atmel_mci *host)
@@ -972,7 +973,7 @@ static void atmci_dma_cleanup(struct atmel_mci *host)
 }
 
 /*
- * This function is called by the DMA driver from tasklet context.
+ * This function is called by the DMA driver from bh context.
  */
 static void atmci_dma_complete(void *arg)
 {
@@ -995,7 +996,7 @@ static void atmci_dma_complete(void *arg)
 	if (data) {
 		dev_dbg(dev, "(%s) set pending xfer complete\n", __func__);
 		atmci_set_pending(host, EVENT_XFER_COMPLETE);
-		tasklet_schedule(&host->tasklet);
+		queue_work(system_bh_wq, &host->bh_work);
 
 		/*
 		 * Regardless of what the documentation says, we have
@@ -1008,7 +1009,7 @@ static void atmci_dma_complete(void *arg)
 		 * haven't seen all the potential error bits yet.
 		 *
 		 * The interrupt handler will schedule a different
-		 * tasklet to finish things up when the data transfer
+		 * bh work to finish things up when the data transfer
 		 * is completely done.
 		 *
 		 * We may not complete the mmc request here anyway
@@ -1745,9 +1746,9 @@ static void atmci_detect_change(struct timer_list *t)
 	}
 }
 
-static void atmci_tasklet_func(struct tasklet_struct *t)
+static void atmci_work_func(struct work_struct *t)
 {
-	struct atmel_mci        *host = from_tasklet(host, t, tasklet);
+	struct atmel_mci        *host = from_work(host, t, bh_work);
 	struct mmc_request	*mrq = host->mrq;
 	struct mmc_data		*data = host->data;
 	struct device		*dev = host->dev;
@@ -1759,7 +1760,7 @@ static void atmci_tasklet_func(struct tasklet_struct *t)
 
 	state = host->state;
 
-	dev_vdbg(dev, "tasklet: state %u pending/completed/mask %lx/%lx/%x\n",
+	dev_vdbg(dev, "bh_work: state %u pending/completed/mask %lx/%lx/%x\n",
 		state, host->pending_events, host->completed_events,
 		atmci_readl(host, ATMCI_IMR));
 
@@ -2118,7 +2119,7 @@ static irqreturn_t atmci_interrupt(int irq, void *dev_id)
 			dev_dbg(dev, "set pending data error\n");
 			smp_wmb();
 			atmci_set_pending(host, EVENT_DATA_ERROR);
-			tasklet_schedule(&host->tasklet);
+			queue_work(system_bh_wq, &host->bh_work);
 		}
 
 		if (pending & ATMCI_TXBUFE) {
@@ -2187,7 +2188,7 @@ static irqreturn_t atmci_interrupt(int irq, void *dev_id)
 			smp_wmb();
 			dev_dbg(dev, "set pending notbusy\n");
 			atmci_set_pending(host, EVENT_NOTBUSY);
-			tasklet_schedule(&host->tasklet);
+			queue_work(system_bh_wq, &host->bh_work);
 		}
 
 		if (pending & ATMCI_NOTBUSY) {
@@ -2196,7 +2197,7 @@ static irqreturn_t atmci_interrupt(int irq, void *dev_id)
 			smp_wmb();
 			dev_dbg(dev, "set pending notbusy\n");
 			atmci_set_pending(host, EVENT_NOTBUSY);
-			tasklet_schedule(&host->tasklet);
+			queue_work(system_bh_wq, &host->bh_work);
 		}
 
 		if (pending & ATMCI_RXRDY)
@@ -2211,7 +2212,7 @@ static irqreturn_t atmci_interrupt(int irq, void *dev_id)
 			smp_wmb();
 			dev_dbg(dev, "set pending cmd rdy\n");
 			atmci_set_pending(host, EVENT_CMD_RDY);
-			tasklet_schedule(&host->tasklet);
+			queue_work(system_bh_wq, &host->bh_work);
 		}
 
 		if (pending & (ATMCI_SDIOIRQA | ATMCI_SDIOIRQB))
@@ -2487,7 +2488,7 @@ static int atmci_probe(struct platform_device *pdev)
 
 	host->mapbase = regs->start;
 
-	tasklet_setup(&host->tasklet, atmci_tasklet_func);
+	INIT_WORK(&host->bh_work, atmci_work_func);
 
 	ret = request_irq(irq, atmci_interrupt, 0, dev_name(dev), host);
 	if (ret) {

drivers/mmc/host/au1xmmc.c

@@ -42,6 +42,7 @@
 #include <linux/leds.h>
 #include <linux/mmc/host.h>
 #include <linux/slab.h>
+#include <linux/workqueue.h>
 
 #include <asm/io.h>
 #include <asm/mach-au1x00/au1000.h>
@@ -113,8 +114,8 @@ struct au1xmmc_host {
 
 	int irq;
 
-	struct tasklet_struct finish_task;
-	struct tasklet_struct data_task;
+	struct work_struct finish_bh_work;
+	struct work_struct data_bh_work;
 	struct au1xmmc_platform_data *platdata;
 	struct platform_device *pdev;
 	struct resource *ioarea;
@@ -253,9 +254,9 @@ static void au1xmmc_finish_request(struct au1xmmc_host *host)
 	mmc_request_done(host->mmc, mrq);
 }
 
-static void au1xmmc_tasklet_finish(struct tasklet_struct *t)
+static void au1xmmc_finish_bh_work(struct work_struct *t)
 {
-	struct au1xmmc_host *host = from_tasklet(host, t, finish_task);
+	struct au1xmmc_host *host = from_work(host, t, finish_bh_work);
 	au1xmmc_finish_request(host);
 }
 
@@ -363,9 +364,9 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
 	au1xmmc_finish_request(host);
 }
 
-static void au1xmmc_tasklet_data(struct tasklet_struct *t)
+static void au1xmmc_data_bh_work(struct work_struct *t)
 {
-	struct au1xmmc_host *host = from_tasklet(host, t, data_task);
+	struct au1xmmc_host *host = from_work(host, t, data_bh_work);
 
 	u32 status = __raw_readl(HOST_STATUS(host));
 	au1xmmc_data_complete(host, status);
@@ -425,7 +426,7 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
 		if (host->flags & HOST_F_STOP)
 			SEND_STOP(host);
 
-		tasklet_schedule(&host->data_task);
+		queue_work(system_bh_wq, &host->data_bh_work);
 	}
 }
 
@@ -505,7 +506,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
 		if (host->flags & HOST_F_STOP)
 			SEND_STOP(host);
 
-		tasklet_schedule(&host->data_task);
+		queue_work(system_bh_wq, &host->data_bh_work);
 	}
 }
 
@@ -561,7 +562,7 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 
 	if (!trans || cmd->error) {
 		IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA | SD_CONFIG_RF);
-		tasklet_schedule(&host->finish_task);
+		queue_work(system_bh_wq, &host->finish_bh_work);
 		return;
 	}
 
@@ -797,7 +798,7 @@ static irqreturn_t au1xmmc_irq(int irq, void *dev_id)
 		IRQ_OFF(host, SD_CONFIG_NE | SD_CONFIG_TH);
 
 		/* IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA | SD_CONFIG_RF); */
-		tasklet_schedule(&host->finish_task);
+		queue_work(system_bh_wq, &host->finish_bh_work);
 	}
 #if 0
 	else if (status & SD_STATUS_DD) {
@@ -806,7 +807,7 @@ static irqreturn_t au1xmmc_irq(int irq, void *dev_id)
 			au1xmmc_receive_pio(host);
 		else {
 			au1xmmc_data_complete(host, status);
-			/* tasklet_schedule(&host->data_task); */
+			/* queue_work(system_bh_wq, &host->data_bh_work); */
 		}
 	}
 #endif
@@ -854,7 +855,7 @@ static void au1xmmc_dbdma_callback(int irq, void *dev_id)
 	if (host->flags & HOST_F_STOP)
 		SEND_STOP(host);
 
-	tasklet_schedule(&host->data_task);
+	queue_work(system_bh_wq, &host->data_bh_work);
 }
 
 static int au1xmmc_dbdma_init(struct au1xmmc_host *host)
@@ -1039,9 +1040,9 @@ static int au1xmmc_probe(struct platform_device *pdev)
 	if (host->platdata)
 		mmc->caps &= ~(host->platdata->mask_host_caps);
 
-	tasklet_setup(&host->data_task, au1xmmc_tasklet_data);
+	INIT_WORK(&host->data_bh_work, au1xmmc_data_bh_work);
 
-	tasklet_setup(&host->finish_task, au1xmmc_tasklet_finish);
+	INIT_WORK(&host->finish_bh_work, au1xmmc_finish_bh_work);
 
 	if (has_dbdma()) {
 		ret = au1xmmc_dbdma_init(host);
@@ -1091,8 +1092,8 @@ static int au1xmmc_probe(struct platform_device *pdev)
 	if (host->flags & HOST_F_DBDMA)
 		au1xmmc_dbdma_shutdown(host);
 
-	tasklet_kill(&host->data_task);
-	tasklet_kill(&host->finish_task);
+	cancel_work_sync(&host->data_bh_work);
+	cancel_work_sync(&host->finish_bh_work);
 
 	if (host->platdata && host->platdata->cd_setup &&
 	    !(mmc->caps & MMC_CAP_NEEDS_POLL))
@@ -1135,8 +1136,8 @@ static void au1xmmc_remove(struct platform_device *pdev)
 		__raw_writel(0, HOST_CONFIG2(host));
 		wmb(); /* drain writebuffer */
 
-		tasklet_kill(&host->data_task);
-		tasklet_kill(&host->finish_task);
+		cancel_work_sync(&host->data_bh_work);
+		cancel_work_sync(&host->finish_bh_work);
 
 		if (host->flags & HOST_F_DBDMA)
 			au1xmmc_dbdma_shutdown(host);

drivers/mmc/host/cb710-mmc.c

@@ -493,7 +493,7 @@ static void cb710_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
 	if (!cb710_mmc_command(mmc, mrq->cmd) && mrq->stop)
 		cb710_mmc_command(mmc, mrq->stop);
 
-	tasklet_schedule(&reader->finish_req_tasklet);
+	queue_work(system_bh_wq, &reader->finish_req_bh_work);
 }
 
 static int cb710_mmc_powerup(struct cb710_slot *slot)
@@ -646,10 +646,10 @@ static int cb710_mmc_irq_handler(struct cb710_slot *slot)
 	return 1;
 }
 
-static void cb710_mmc_finish_request_tasklet(struct tasklet_struct *t)
+static void cb710_mmc_finish_request_bh_work(struct work_struct *t)
 {
-	struct cb710_mmc_reader *reader = from_tasklet(reader, t,
-						       finish_req_tasklet);
+	struct cb710_mmc_reader *reader = from_work(reader, t,
+						       finish_req_bh_work);
 	struct mmc_request *mrq = reader->mrq;
 
 	reader->mrq = NULL;
@@ -718,8 +718,8 @@ static int cb710_mmc_init(struct platform_device *pdev)
 
 	reader = mmc_priv(mmc);
 
-	tasklet_setup(&reader->finish_req_tasklet,
-		      cb710_mmc_finish_request_tasklet);
+	INIT_WORK(&reader->finish_req_bh_work,
+			cb710_mmc_finish_request_bh_work);
 	spin_lock_init(&reader->irq_lock);
 	cb710_dump_regs(chip, CB710_DUMP_REGS_MMC);
 
@@ -763,7 +763,7 @@ static void cb710_mmc_exit(struct platform_device *pdev)
 	cb710_write_port_32(slot, CB710_MMC_CONFIG_PORT, 0);
 	cb710_write_port_16(slot, CB710_MMC_CONFIGB_PORT, 0);
 
-	tasklet_kill(&reader->finish_req_tasklet);
+	cancel_work_sync(&reader->finish_req_bh_work);
 
 	mmc_free_host(mmc);
 }

drivers/mmc/host/cb710-mmc.h

@@ -8,10 +8,11 @@
 #define LINUX_CB710_MMC_H
 
 #include <linux/cb710.h>
+#include <linux/workqueue.h>
 
 /* per-MMC-reader structure */
 struct cb710_mmc_reader {
-	struct tasklet_struct finish_req_tasklet;
+	struct work_struct finish_req_bh_work;
 	struct mmc_request *mrq;
 	spinlock_t irq_lock;
 	unsigned char last_power_mode;

drivers/mmc/host/davinci_mmc.c

@@ -1187,7 +1187,7 @@ static int davinci_mmcsd_probe(struct platform_device *pdev)
 	struct mmc_davinci_host *host = NULL;
 	struct mmc_host *mmc = NULL;
 	struct resource *r, *mem = NULL;
-	int ret, irq;
+	int ret, irq, bus_width;
 	size_t mem_size;
 	const struct platform_device_id *id_entry;
 
@@ -1317,9 +1317,14 @@ static int davinci_mmcsd_probe(struct platform_device *pdev)
 
 	rename_region(mem, mmc_hostname(mmc));
 
+	if (mmc->caps & MMC_CAP_8_BIT_DATA)
+		bus_width = 8;
+	else if (mmc->caps & MMC_CAP_4_BIT_DATA)
+		bus_width = 4;
+	else
+		bus_width = 1;
 	dev_info(mmc_dev(host->mmc), "Using %s, %d-bit mode\n",
-		host->use_dma ? "DMA" : "PIO",
-		(mmc->caps & MMC_CAP_4_BIT_DATA) ? 4 : 1);
+		 host->use_dma ? "DMA" : "PIO", bus_width);
 
 	return 0;
 

drivers/mmc/host/dw_mmc-bluefield.c

@@ -3,6 +3,7 @@
  * Copyright (C) 2018 Mellanox Technologies.
  */
 
+#include <linux/arm-smccc.h>
 #include <linux/bitfield.h>
 #include <linux/bitops.h>
 #include <linux/mmc/host.h>
@@ -20,6 +21,9 @@
 #define BLUEFIELD_UHS_REG_EXT_SAMPLE	2
 #define BLUEFIELD_UHS_REG_EXT_DRIVE	4
 
+/* SMC call for RST_N */
+#define BLUEFIELD_SMC_SET_EMMC_RST_N	0x82000007
+
 static void dw_mci_bluefield_set_ios(struct dw_mci *host, struct mmc_ios *ios)
 {
 	u32 reg;
@@ -34,8 +38,20 @@ static void dw_mci_bluefield_set_ios(struct dw_mci *host, struct mmc_ios *ios)
 	mci_writel(host, UHS_REG_EXT, reg);
 }
 
+static void dw_mci_bluefield_hw_reset(struct dw_mci *host)
+{
+		struct arm_smccc_res res = { 0 };
+
+		arm_smccc_smc(BLUEFIELD_SMC_SET_EMMC_RST_N, 0, 0, 0, 0, 0, 0, 0,
+			      &res);
+
+		if (res.a0)
+			pr_err("RST_N failed.\n");
+}
+
 static const struct dw_mci_drv_data bluefield_drv_data = {
-	.set_ios		= dw_mci_bluefield_set_ios
+	.set_ios		= dw_mci_bluefield_set_ios,
+	.hw_reset		= dw_mci_bluefield_hw_reset
 };
 
 static const struct of_device_id dw_mci_bluefield_match[] = {

drivers/mmc/host/dw_mmc.c

@@ -493,7 +493,7 @@ static void dw_mci_dmac_complete_dma(void *arg)
 	 */
 	if (data) {
 		set_bit(EVENT_XFER_COMPLETE, &host->pending_events);
-		tasklet_schedule(&host->tasklet);
+		queue_work(system_bh_wq, &host->bh_work);
 	}
 }
 
@@ -1617,6 +1617,7 @@ static void dw_mci_hw_reset(struct mmc_host *mmc)
 {
 	struct dw_mci_slot *slot = mmc_priv(mmc);
 	struct dw_mci *host = slot->host;
+	const struct dw_mci_drv_data *drv_data = host->drv_data;
 	int reset;
 
 	if (host->use_dma == TRANS_MODE_IDMAC)
@@ -1626,6 +1627,11 @@ static void dw_mci_hw_reset(struct mmc_host *mmc)
 				     SDMMC_CTRL_FIFO_RESET))
 		return;
 
+	if (drv_data && drv_data->hw_reset) {
+		drv_data->hw_reset(host);
+		return;
+	}
+
 	/*
 	 * According to eMMC spec, card reset procedure:
 	 * tRstW >= 1us:   RST_n pulse width
@@ -1834,7 +1840,7 @@ static enum hrtimer_restart dw_mci_fault_timer(struct hrtimer *t)
 	if (!host->data_status) {
 		host->data_status = SDMMC_INT_DCRC;
 		set_bit(EVENT_DATA_ERROR, &host->pending_events);
-		tasklet_schedule(&host->tasklet);
+		queue_work(system_bh_wq, &host->bh_work);
 	}
 
 	spin_unlock_irqrestore(&host->irq_lock, flags);
@@ -2056,9 +2062,9 @@ static bool dw_mci_clear_pending_data_complete(struct dw_mci *host)
 	return true;
 }
 
-static void dw_mci_tasklet_func(struct tasklet_struct *t)
+static void dw_mci_work_func(struct work_struct *t)
 {
-	struct dw_mci *host = from_tasklet(host, t, tasklet);
+	struct dw_mci *host = from_work(host, t, bh_work);
 	struct mmc_data	*data;
 	struct mmc_command *cmd;
 	struct mmc_request *mrq;
@@ -2113,7 +2119,7 @@ static void dw_mci_tasklet_func(struct tasklet_struct *t)
 				 * will waste a bit of time (we already know
 				 * the command was bad), it can't cause any
 				 * errors since it's possible it would have
-				 * taken place anyway if this tasklet got
+				 * taken place anyway if this bh work got
 				 * delayed. Allowing the transfer to take place
 				 * avoids races and keeps things simple.
 				 */
@@ -2706,7 +2712,7 @@ static void dw_mci_cmd_interrupt(struct dw_mci *host, u32 status)
 	smp_wmb(); /* drain writebuffer */
 
 	set_bit(EVENT_CMD_COMPLETE, &host->pending_events);
-	tasklet_schedule(&host->tasklet);
+	queue_work(system_bh_wq, &host->bh_work);
 
 	dw_mci_start_fault_timer(host);
 }
@@ -2774,7 +2780,7 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
 				set_bit(EVENT_DATA_COMPLETE,
 					&host->pending_events);
 
-			tasklet_schedule(&host->tasklet);
+			queue_work(system_bh_wq, &host->bh_work);
 
 			spin_unlock(&host->irq_lock);
 		}
@@ -2793,7 +2799,7 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
 					dw_mci_read_data_pio(host, true);
 			}
 			set_bit(EVENT_DATA_COMPLETE, &host->pending_events);
-			tasklet_schedule(&host->tasklet);
+			queue_work(system_bh_wq, &host->bh_work);
 
 			spin_unlock(&host->irq_lock);
 		}
@@ -3098,7 +3104,7 @@ static void dw_mci_cmd11_timer(struct timer_list *t)
 
 	host->cmd_status = SDMMC_INT_RTO;
 	set_bit(EVENT_CMD_COMPLETE, &host->pending_events);
-	tasklet_schedule(&host->tasklet);
+	queue_work(system_bh_wq, &host->bh_work);
 }
 
 static void dw_mci_cto_timer(struct timer_list *t)
@@ -3144,7 +3150,7 @@ static void dw_mci_cto_timer(struct timer_list *t)
 		 */
 		host->cmd_status = SDMMC_INT_RTO;
 		set_bit(EVENT_CMD_COMPLETE, &host->pending_events);
-		tasklet_schedule(&host->tasklet);
+		queue_work(system_bh_wq, &host->bh_work);
 		break;
 	default:
 		dev_warn(host->dev, "Unexpected command timeout, state %d\n",
@@ -3195,7 +3201,7 @@ static void dw_mci_dto_timer(struct timer_list *t)
 		host->data_status = SDMMC_INT_DRTO;
 		set_bit(EVENT_DATA_ERROR, &host->pending_events);
 		set_bit(EVENT_DATA_COMPLETE, &host->pending_events);
-		tasklet_schedule(&host->tasklet);
+		queue_work(system_bh_wq, &host->bh_work);
 		break;
 	default:
 		dev_warn(host->dev, "Unexpected data timeout, state %d\n",
@@ -3435,7 +3441,7 @@ int dw_mci_probe(struct dw_mci *host)
 	else
 		host->fifo_reg = host->regs + DATA_240A_OFFSET;
 
-	tasklet_setup(&host->tasklet, dw_mci_tasklet_func);
+	INIT_WORK(&host->bh_work, dw_mci_work_func);
 	ret = devm_request_irq(host->dev, host->irq, dw_mci_interrupt,
 			       host->irq_flags, "dw-mci", host);
 	if (ret)

drivers/mmc/host/dw_mmc.h

@@ -17,6 +17,7 @@
 #include <linux/fault-inject.h>
 #include <linux/hrtimer.h>
 #include <linux/interrupt.h>
+#include <linux/workqueue.h>
 
 enum dw_mci_state {
 	STATE_IDLE = 0,
@@ -89,12 +90,12 @@ struct dw_mci_dma_slave {
  * @stop_cmdr: Value to be loaded into CMDR when the stop command is
  *	to be sent.
  * @dir_status: Direction of current transfer.
- * @tasklet: Tasklet running the request state machine.
+ * @bh_work: Work running the request state machine.
  * @pending_events: Bitmask of events flagged by the interrupt handler
- *	to be processed by the tasklet.
+ *	to be processed by bh work.
  * @completed_events: Bitmask of events which the state machine has
  *	processed.
- * @state: Tasklet state.
+ * @state: BH work state.
  * @queue: List of slots waiting for access to the controller.
  * @bus_hz: The rate of @mck in Hz. This forms the basis for MMC bus
  *	rate and timeout calculations.
@@ -194,7 +195,7 @@ struct dw_mci {
 	u32			data_status;
 	u32			stop_cmdr;
 	u32			dir_status;
-	struct tasklet_struct	tasklet;
+	struct work_struct	bh_work;
 	unsigned long		pending_events;
 	unsigned long		completed_events;
 	enum dw_mci_state	state;
@@ -565,6 +566,7 @@ struct dw_mci_slot {
  * @execute_tuning: implementation specific tuning procedure.
  * @set_data_timeout: implementation specific timeout.
  * @get_drto_clks: implementation specific cycle count for data read timeout.
+ * @hw_reset: implementation specific HW reset.
  *
  * Provide controller implementation specific extensions. The usage of this
  * data structure is fully optional and usage of each member in this structure
@@ -585,5 +587,6 @@ struct dw_mci_drv_data {
 	void		(*set_data_timeout)(struct dw_mci *host,
 					  unsigned int timeout_ns);
 	u32		(*get_drto_clks)(struct dw_mci *host);
+	void		(*hw_reset)(struct dw_mci *host);
 };
 #endif /* _DW_MMC_H_ */

drivers/mmc/host/mmc_spi.c

@@ -1208,7 +1208,10 @@ static int mmc_spi_probe(struct spi_device *spi)
 	 * that's the only reason not to use a few MHz for f_min (until
 	 * the upper layer reads the target frequency from the CSD).
 	 */
-	mmc->f_min = 400000;
+	if (spi->controller->min_speed_hz > 400000)
+		dev_warn(&spi->dev,"Controller unable to reduce bus clock to 400 KHz\n");
+
+	mmc->f_min = max(spi->controller->min_speed_hz, 400000);
 	mmc->f_max = spi->max_speed_hz;
 
 	host = mmc_priv(mmc);

drivers/mmc/host/of_mmc_spi.c

@@ -19,6 +19,7 @@
 #include <linux/mmc/core.h>
 #include <linux/mmc/host.h>
 
+MODULE_DESCRIPTION("OpenFirmware bindings for the MMC-over-SPI driver");
 MODULE_LICENSE("GPL");
 
 struct of_mmc_spi {

drivers/mmc/host/omap.c

@@ -28,6 +28,7 @@
 #include <linux/slab.h>
 #include <linux/gpio/consumer.h>
 #include <linux/platform_data/mmc-omap.h>
+#include <linux/workqueue.h>
 
 
 #define	OMAP_MMC_REG_CMD	0x00
@@ -105,7 +106,7 @@ struct mmc_omap_slot {
 	u16			power_mode;
 	unsigned int		fclk_freq;
 
-	struct tasklet_struct	cover_tasklet;
+	struct work_struct	cover_bh_work;
 	struct timer_list       cover_timer;
 	unsigned		cover_open;
 
@@ -873,18 +874,18 @@ void omap_mmc_notify_cover_event(struct device *dev, int num, int is_closed)
 		sysfs_notify(&slot->mmc->class_dev.kobj, NULL, "cover_switch");
 	}
 
-	tasklet_hi_schedule(&slot->cover_tasklet);
+	queue_work(system_bh_highpri_wq, &slot->cover_bh_work);
 }
 
 static void mmc_omap_cover_timer(struct timer_list *t)
 {
 	struct mmc_omap_slot *slot = from_timer(slot, t, cover_timer);
-	tasklet_schedule(&slot->cover_tasklet);
+	queue_work(system_bh_wq, &slot->cover_bh_work);
 }
 
-static void mmc_omap_cover_handler(struct tasklet_struct *t)
+static void mmc_omap_cover_bh_handler(struct work_struct *t)
 {
-	struct mmc_omap_slot *slot = from_tasklet(slot, t, cover_tasklet);
+	struct mmc_omap_slot *slot = from_work(slot, t, cover_bh_work);
 	int cover_open = mmc_omap_cover_is_open(slot);
 
 	mmc_detect_change(slot->mmc, 0);
@@ -1314,7 +1315,7 @@ static int mmc_omap_new_slot(struct mmc_omap_host *host, int id)
 
 	if (slot->pdata->get_cover_state != NULL) {
 		timer_setup(&slot->cover_timer, mmc_omap_cover_timer, 0);
-		tasklet_setup(&slot->cover_tasklet, mmc_omap_cover_handler);
+		INIT_WORK(&slot->cover_bh_work, mmc_omap_cover_bh_handler);
 	}
 
 	r = mmc_add_host(mmc);
@@ -1333,7 +1334,7 @@ static int mmc_omap_new_slot(struct mmc_omap_host *host, int id)
 					&dev_attr_cover_switch);
 		if (r < 0)
 			goto err_remove_slot_name;
-		tasklet_schedule(&slot->cover_tasklet);
+		queue_work(system_bh_wq, &slot->cover_bh_work);
 	}
 
 	return 0;
@@ -1356,7 +1357,7 @@ static void mmc_omap_remove_slot(struct mmc_omap_slot *slot)
 	if (slot->pdata->get_cover_state != NULL)
 		device_remove_file(&mmc->class_dev, &dev_attr_cover_switch);
 
-	tasklet_kill(&slot->cover_tasklet);
+	cancel_work_sync(&slot->cover_bh_work);
 	del_timer_sync(&slot->cover_timer);
 	flush_workqueue(slot->host->mmc_omap_wq);
 

drivers/mmc/host/renesas_sdhi.h

@@ -11,6 +11,7 @@
 
 #include <linux/dmaengine.h>
 #include <linux/platform_device.h>
+#include <linux/workqueue.h>
 #include "tmio_mmc.h"
 
 struct renesas_sdhi_scc {
@@ -67,7 +68,7 @@ struct renesas_sdhi_dma {
 	dma_filter_fn filter;
 	void (*enable)(struct tmio_mmc_host *host, bool enable);
 	struct completion dma_dataend;
-	struct tasklet_struct dma_complete;
+	struct work_struct dma_complete;
 };
 
 struct renesas_sdhi {
@@ -93,6 +94,7 @@ struct renesas_sdhi {
 	unsigned int tap_set;
 
 	struct reset_control *rstc;
+	struct tmio_mmc_host *host;
 };
 
 #define host_to_priv(host) \

drivers/mmc/host/renesas_sdhi_core.c

@@ -970,6 +970,8 @@ int renesas_sdhi_probe(struct platform_device *pdev,
 	if (IS_ERR(host))
 		return PTR_ERR(host);
 
+	priv->host = host;
+
 	if (of_data) {
 		mmc_data->flags |= of_data->tmio_flags;
 		mmc_data->ocr_mask = of_data->tmio_ocr_mask;
@@ -1162,4 +1164,5 @@ void renesas_sdhi_remove(struct platform_device *pdev)
 }
 EXPORT_SYMBOL_GPL(renesas_sdhi_remove);
 
+MODULE_DESCRIPTION("Renesas SDHI core driver");
 MODULE_LICENSE("GPL v2");

drivers/mmc/host/renesas_sdhi_internal_dmac.c

@@ -337,7 +337,7 @@ static bool renesas_sdhi_internal_dmac_dma_irq(struct tmio_mmc_host *host)
 		writel(status ^ dma_irqs, host->ctl + DM_CM_INFO1);
 		set_bit(SDHI_DMA_END_FLAG_DMA, &dma_priv->end_flags);
 		if (test_bit(SDHI_DMA_END_FLAG_ACCESS, &dma_priv->end_flags))
-			tasklet_schedule(&dma_priv->dma_complete);
+			queue_work(system_bh_wq, &dma_priv->dma_complete);
 	}
 
 	return status & dma_irqs;
@@ -352,7 +352,7 @@ renesas_sdhi_internal_dmac_dataend_dma(struct tmio_mmc_host *host)
 	set_bit(SDHI_DMA_END_FLAG_ACCESS, &dma_priv->end_flags);
 	if (test_bit(SDHI_DMA_END_FLAG_DMA, &dma_priv->end_flags) ||
 	    host->data->error)
-		tasklet_schedule(&dma_priv->dma_complete);
+		queue_work(system_bh_wq, &dma_priv->dma_complete);
 }
 
 /*
@@ -440,9 +440,9 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host,
 	renesas_sdhi_internal_dmac_enable_dma(host, false);
 }
 
-static void renesas_sdhi_internal_dmac_issue_tasklet_fn(unsigned long arg)
+static void renesas_sdhi_internal_dmac_issue_work_fn(struct work_struct *work)
 {
-	struct tmio_mmc_host *host = (struct tmio_mmc_host *)arg;
+	struct tmio_mmc_host *host = from_work(host, work, dma_issue);
 	struct renesas_sdhi *priv = host_to_priv(host);
 
 	tmio_mmc_enable_mmc_irqs(host, TMIO_STAT_DATAEND);
@@ -454,7 +454,7 @@ static void renesas_sdhi_internal_dmac_issue_tasklet_fn(unsigned long arg)
 		/* on CMD errors, simulate DMA end immediately */
 		set_bit(SDHI_DMA_END_FLAG_DMA, &priv->dma_priv.end_flags);
 		if (test_bit(SDHI_DMA_END_FLAG_ACCESS, &priv->dma_priv.end_flags))
-			tasklet_schedule(&priv->dma_priv.dma_complete);
+			queue_work(system_bh_wq, &priv->dma_priv.dma_complete);
 	}
 }
 
@@ -484,9 +484,11 @@ static bool renesas_sdhi_internal_dmac_complete(struct tmio_mmc_host *host)
 	return true;
 }
 
-static void renesas_sdhi_internal_dmac_complete_tasklet_fn(unsigned long arg)
+static void renesas_sdhi_internal_dmac_complete_work_fn(struct work_struct *work)
 {
-	struct tmio_mmc_host *host = (struct tmio_mmc_host *)arg;
+	struct renesas_sdhi_dma *dma_priv = from_work(dma_priv, work, dma_complete);
+	struct renesas_sdhi *priv = container_of(dma_priv, typeof(*priv), dma_priv);
+	struct tmio_mmc_host *host = priv->host;
 
 	spin_lock_irq(&host->lock);
 	if (!renesas_sdhi_internal_dmac_complete(host))
@@ -544,12 +546,10 @@ renesas_sdhi_internal_dmac_request_dma(struct tmio_mmc_host *host,
 	/* Each value is set to non-zero to assume "enabling" each DMA */
 	host->chan_rx = host->chan_tx = (void *)0xdeadbeaf;
 
-	tasklet_init(&priv->dma_priv.dma_complete,
-		     renesas_sdhi_internal_dmac_complete_tasklet_fn,
-		     (unsigned long)host);
-	tasklet_init(&host->dma_issue,
-		     renesas_sdhi_internal_dmac_issue_tasklet_fn,
-		     (unsigned long)host);
+	INIT_WORK(&priv->dma_priv.dma_complete,
+		  renesas_sdhi_internal_dmac_complete_work_fn);
+	INIT_WORK(&host->dma_issue,
+		  renesas_sdhi_internal_dmac_issue_work_fn);
 
 	/* Add pre_req and post_req */
 	host->ops.pre_req = renesas_sdhi_internal_dmac_pre_req;

drivers/mmc/host/renesas_sdhi_sys_dmac.c

@@ -312,9 +312,9 @@ static void renesas_sdhi_sys_dmac_start_dma(struct tmio_mmc_host *host,
 	}
 }
 
-static void renesas_sdhi_sys_dmac_issue_tasklet_fn(unsigned long priv)
+static void renesas_sdhi_sys_dmac_issue_work_fn(struct work_struct *work)
 {
-	struct tmio_mmc_host *host = (struct tmio_mmc_host *)priv;
+	struct tmio_mmc_host *host = from_work(host, work, dma_issue);
 	struct dma_chan *chan = NULL;
 
 	spin_lock_irq(&host->lock);
@@ -401,9 +401,8 @@ static void renesas_sdhi_sys_dmac_request_dma(struct tmio_mmc_host *host,
 			goto ebouncebuf;
 
 		init_completion(&priv->dma_priv.dma_dataend);
-		tasklet_init(&host->dma_issue,
-			     renesas_sdhi_sys_dmac_issue_tasklet_fn,
-			     (unsigned long)host);
+		INIT_WORK(&host->dma_issue,
+			  renesas_sdhi_sys_dmac_issue_work_fn);
 	}
 
 	renesas_sdhi_sys_dmac_enable_dma(host, true);

drivers/mmc/host/sdhci-bcm-kona.c

@@ -107,7 +107,7 @@ static void sdhci_bcm_kona_sd_init(struct sdhci_host *host)
  * Software emulation of the SD card insertion/removal. Set insert=1 for insert
  * and insert=0 for removal. The card detection is done by GPIO. For Broadcom
  * IP to function properly the bit 0 of CORESTAT register needs to be set/reset
- * to generate the CD IRQ handled in sdhci.c which schedules card_tasklet.
+* to generate the CD IRQ handled in sdhci.c
  */
 static int sdhci_bcm_kona_sd_card_emulate(struct sdhci_host *host, int insert)
 {

drivers/mmc/host/sdhci-brcmstb.c

@@ -31,6 +31,21 @@
 
 #define SDHCI_ARASAN_CQE_BASE_ADDR		0x200
 
+#define SDIO_CFG_CQ_CAPABILITY			0x4c
+#define SDIO_CFG_CQ_CAPABILITY_FMUL		GENMASK(13, 12)
+
+#define SDIO_CFG_CTRL				0x0
+#define SDIO_CFG_CTRL_SDCD_N_TEST_EN		BIT(31)
+#define SDIO_CFG_CTRL_SDCD_N_TEST_LEV		BIT(30)
+
+#define SDIO_CFG_MAX_50MHZ_MODE			0x1ac
+#define SDIO_CFG_MAX_50MHZ_MODE_STRAP_OVERRIDE	BIT(31)
+#define SDIO_CFG_MAX_50MHZ_MODE_ENABLE		BIT(0)
+
+#define MMC_CAP_HSE_MASK	(MMC_CAP2_HSX00_1_2V | MMC_CAP2_HSX00_1_8V)
+/* Select all SD UHS type I SDR speed above 50MB/s */
+#define MMC_CAP_UHS_I_SDR_MASK	(MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104)
+
 struct sdhci_brcmstb_priv {
 	void __iomem *cfg_regs;
 	unsigned int flags;
@@ -39,6 +54,7 @@ struct sdhci_brcmstb_priv {
 };
 
 struct brcmstb_match_priv {
+	void (*cfginit)(struct sdhci_host *host);
 	void (*hs400es)(struct mmc_host *mmc, struct mmc_ios *ios);
 	struct sdhci_ops *ops;
 	const unsigned int flags;
@@ -169,6 +185,33 @@ static void sdhci_brcmstb_set_uhs_signaling(struct sdhci_host *host,
 	sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
 }
 
+static void sdhci_brcmstb_cfginit_2712(struct sdhci_host *host)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_brcmstb_priv *brcmstb_priv = sdhci_pltfm_priv(pltfm_host);
+	u32 reg;
+
+	/*
+	 * If we support a speed that requires tuning,
+	 * then select the delay line PHY as the clock source.
+	 */
+	if ((host->mmc->caps & MMC_CAP_UHS_I_SDR_MASK) || (host->mmc->caps2 & MMC_CAP_HSE_MASK)) {
+		reg = readl(brcmstb_priv->cfg_regs + SDIO_CFG_MAX_50MHZ_MODE);
+		reg &= ~SDIO_CFG_MAX_50MHZ_MODE_ENABLE;
+		reg |= SDIO_CFG_MAX_50MHZ_MODE_STRAP_OVERRIDE;
+		writel(reg, brcmstb_priv->cfg_regs + SDIO_CFG_MAX_50MHZ_MODE);
+	}
+
+	if ((host->mmc->caps & MMC_CAP_NONREMOVABLE) ||
+	    (host->mmc->caps & MMC_CAP_NEEDS_POLL)) {
+		/* Force presence */
+		reg = readl(brcmstb_priv->cfg_regs + SDIO_CFG_CTRL);
+		reg &= ~SDIO_CFG_CTRL_SDCD_N_TEST_LEV;
+		reg |= SDIO_CFG_CTRL_SDCD_N_TEST_EN;
+		writel(reg, brcmstb_priv->cfg_regs + SDIO_CFG_CTRL);
+	}
+}
+
 static void sdhci_brcmstb_dumpregs(struct mmc_host *mmc)
 {
 	sdhci_dumpregs(mmc_priv(mmc));
@@ -201,6 +244,14 @@ static struct sdhci_ops sdhci_brcmstb_ops = {
 	.set_uhs_signaling = sdhci_set_uhs_signaling,
 };
 
+static struct sdhci_ops sdhci_brcmstb_ops_2712 = {
+	.set_clock = sdhci_set_clock,
+	.set_power = sdhci_set_power_and_bus_voltage,
+	.set_bus_width = sdhci_set_bus_width,
+	.reset = sdhci_reset,
+	.set_uhs_signaling = sdhci_set_uhs_signaling,
+};
+
 static struct sdhci_ops sdhci_brcmstb_ops_7216 = {
 	.set_clock = sdhci_brcmstb_set_clock,
 	.set_bus_width = sdhci_set_bus_width,
@@ -215,6 +266,11 @@ static struct sdhci_ops sdhci_brcmstb_ops_74165b0 = {
 	.set_uhs_signaling = sdhci_brcmstb_set_uhs_signaling,
 };
 
+static const struct brcmstb_match_priv match_priv_2712 = {
+	.cfginit = sdhci_brcmstb_cfginit_2712,
+	.ops = &sdhci_brcmstb_ops_2712,
+};
+
 static struct brcmstb_match_priv match_priv_7425 = {
 	.flags = BRCMSTB_MATCH_FLAGS_NO_64BIT |
 	BRCMSTB_MATCH_FLAGS_BROKEN_TIMEOUT,
@@ -239,6 +295,7 @@ static struct brcmstb_match_priv match_priv_74165b0 = {
 };
 
 static const struct of_device_id __maybe_unused sdhci_brcm_of_match[] = {
+	{ .compatible = "brcm,bcm2712-sdhci", .data = &match_priv_2712 },
 	{ .compatible = "brcm,bcm7425-sdhci", .data = &match_priv_7425 },
 	{ .compatible = "brcm,bcm7445-sdhci", .data = &match_priv_7445 },
 	{ .compatible = "brcm,bcm7216-sdhci", .data = &match_priv_7216 },
@@ -371,6 +428,9 @@ static int sdhci_brcmstb_probe(struct platform_device *pdev)
 	    (host->mmc->caps2 & MMC_CAP2_HS400_ES))
 		host->mmc_host_ops.hs400_enhanced_strobe = match_priv->hs400es;
 
+	if (match_priv->cfginit)
+		match_priv->cfginit(host);
+
 	/*
 	 * Supply the existing CAPS, but clear the UHS modes. This
 	 * will allow these modes to be specified by device tree

drivers/mmc/host/sdhci-esdhc-imx.c

@@ -201,6 +201,9 @@
 /* ERR004536 is not applicable for the IP  */
 #define ESDHC_FLAG_SKIP_ERR004536	BIT(17)
 
+/* The IP does not have GPIO CD wake capabilities */
+#define ESDHC_FLAG_SKIP_CD_WAKE		BIT(18)
+
 enum wp_types {
 	ESDHC_WP_NONE,		/* no WP, neither controller nor gpio */
 	ESDHC_WP_CONTROLLER,	/* mmc controller internal WP */
@@ -298,7 +301,7 @@ static struct esdhc_soc_data usdhc_s32g2_data = {
 	.flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_MAN_TUNING
 			| ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200
 			| ESDHC_FLAG_HS400 | ESDHC_FLAG_HS400_ES
-			| ESDHC_FLAG_SKIP_ERR004536,
+			| ESDHC_FLAG_SKIP_ERR004536 | ESDHC_FLAG_SKIP_CD_WAKE,
 };
 
 static struct esdhc_soc_data usdhc_imx7ulp_data = {
@@ -1706,7 +1709,6 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
 	}
 
 	pltfm_host->clk = imx_data->clk_per;
-	pltfm_host->clock = clk_get_rate(pltfm_host->clk);
 	err = clk_prepare_enable(imx_data->clk_per);
 	if (err)
 		goto free_sdhci;
@@ -1717,6 +1719,13 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
 	if (err)
 		goto disable_ipg_clk;
 
+	pltfm_host->clock = clk_get_rate(pltfm_host->clk);
+	if (!pltfm_host->clock) {
+		dev_err(mmc_dev(host->mmc), "could not get clk rate\n");
+		err = -EINVAL;
+		goto disable_ahb_clk;
+	}
+
 	imx_data->pinctrl = devm_pinctrl_get(&pdev->dev);
 	if (IS_ERR(imx_data->pinctrl))
 		dev_warn(mmc_dev(host->mmc), "could not get pinctrl\n");
@@ -1726,7 +1735,8 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
 		host->mmc->caps |= MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR;
 
 		/* GPIO CD can be set as a wakeup source */
-		host->mmc->caps |= MMC_CAP_CD_WAKE;
+		if (!(imx_data->socdata->flags & ESDHC_FLAG_SKIP_CD_WAKE))
+			host->mmc->caps |= MMC_CAP_CD_WAKE;
 
 		if (!(imx_data->socdata->flags & ESDHC_FLAG_HS200))
 			host->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200;

drivers/mmc/host/sdhci-of-dwcmshc.c

@@ -908,6 +908,7 @@ static const struct sdhci_ops sdhci_dwcmshc_rk35xx_ops = {
 	.get_max_clock		= rk35xx_get_max_clock,
 	.reset			= rk35xx_sdhci_reset,
 	.adma_write_desc	= dwcmshc_adma_write_desc,
+	.irq			= dwcmshc_cqe_irq_handler,
 };
 
 static const struct sdhci_ops sdhci_dwcmshc_th1520_ops = {

drivers/mmc/host/sdhci-pci-core.c

@@ -1319,6 +1319,23 @@ static const struct sdhci_pci_fixes sdhci_intel_mrfld_mmc = {
 	.probe_slot	= intel_mrfld_mmc_probe_slot,
 };
 
+#define JMB388_SAMPLE_COUNT	5
+
+static int jmicron_jmb388_get_ro(struct mmc_host *mmc)
+{
+	int i, ro_count;
+
+	ro_count = 0;
+	for (i = 0; i < JMB388_SAMPLE_COUNT; i++) {
+		if (sdhci_get_ro(mmc) > 0) {
+			if (++ro_count > JMB388_SAMPLE_COUNT / 2)
+				return 1;
+		}
+		msleep(30);
+	}
+	return 0;
+}
+
 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
 {
 	u8 scratch;
@@ -1403,11 +1420,6 @@ static int jmicron_probe(struct sdhci_pci_chip *chip)
 		return ret;
 	}
 
-	/* quirk for unsable RO-detection on JM388 chips */
-	if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
-	    chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
-		chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
-
 	return 0;
 }
 
@@ -1462,6 +1474,11 @@ static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
 
 	slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
 
+	/* Handle unstable RO-detection on JM388 chips */
+	if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
+	    slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
+		slot->host->mmc_host_ops.get_ro = jmicron_jmb388_get_ro;
+
 	return 0;
 }
 

drivers/mmc/host/sdhci.c

@@ -2513,8 +2513,9 @@ int sdhci_get_cd_nogpio(struct mmc_host *mmc)
 }
 EXPORT_SYMBOL_GPL(sdhci_get_cd_nogpio);
 
-static int sdhci_check_ro(struct sdhci_host *host)
+int sdhci_get_ro(struct mmc_host *mmc)
 {
+	struct sdhci_host *host = mmc_priv(mmc);
 	bool allow_invert = false;
 	int is_readonly;
 
@@ -2522,10 +2523,10 @@ static int sdhci_check_ro(struct sdhci_host *host)
 		is_readonly = 0;
 	} else if (host->ops->get_ro) {
 		is_readonly = host->ops->get_ro(host);
-	} else if (mmc_can_gpio_ro(host->mmc)) {
-		is_readonly = mmc_gpio_get_ro(host->mmc);
+	} else if (mmc_can_gpio_ro(mmc)) {
+		is_readonly = mmc_gpio_get_ro(mmc);
 		/* Do not invert twice */
-		allow_invert = !(host->mmc->caps2 & MMC_CAP2_RO_ACTIVE_HIGH);
+		allow_invert = !(mmc->caps2 & MMC_CAP2_RO_ACTIVE_HIGH);
 	} else {
 		is_readonly = !(sdhci_readl(host, SDHCI_PRESENT_STATE)
 				& SDHCI_WRITE_PROTECT);
@@ -2539,27 +2540,7 @@ static int sdhci_check_ro(struct sdhci_host *host)
 
 	return is_readonly;
 }
-
-#define SAMPLE_COUNT	5
-
-static int sdhci_get_ro(struct mmc_host *mmc)
-{
-	struct sdhci_host *host = mmc_priv(mmc);
-	int i, ro_count;
-
-	if (!(host->quirks & SDHCI_QUIRK_UNSTABLE_RO_DETECT))
-		return sdhci_check_ro(host);
-
-	ro_count = 0;
-	for (i = 0; i < SAMPLE_COUNT; i++) {
-		if (sdhci_check_ro(host)) {
-			if (++ro_count > SAMPLE_COUNT / 2)
-				return 1;
-		}
-		msleep(30);
-	}
-	return 0;
-}
+EXPORT_SYMBOL_GPL(sdhci_get_ro);
 
 static void sdhci_hw_reset(struct mmc_host *mmc)
 {

drivers/mmc/host/sdhci.h

@@ -437,8 +437,6 @@ struct sdhci_host {
 #define SDHCI_QUIRK_NO_HISPD_BIT			(1<<29)
 /* Controller treats ADMA descriptors with length 0000h incorrectly */
 #define SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC		(1<<30)
-/* The read-only detection via SDHCI_PRESENT_STATE register is unstable */
-#define SDHCI_QUIRK_UNSTABLE_RO_DETECT			(1<<31)
 
 	unsigned int quirks2;	/* More deviations from spec. */
 
@@ -788,6 +786,7 @@ void sdhci_set_power_and_bus_voltage(struct sdhci_host *host,
 void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
 			   unsigned short vdd);
 int sdhci_get_cd_nogpio(struct mmc_host *mmc);
+int sdhci_get_ro(struct mmc_host *mmc);
 void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq);
 int sdhci_request_atomic(struct mmc_host *mmc, struct mmc_request *mrq);
 void sdhci_set_bus_width(struct sdhci_host *host, int width);

drivers/mmc/host/sdhci_am654.c

@@ -90,7 +90,7 @@
 /* Command Queue Host Controller Interface Base address */
 #define SDHCI_AM654_CQE_BASE_ADDR 0x200
 
-static struct regmap_config sdhci_am654_regmap_config = {
+static const struct regmap_config sdhci_am654_regmap_config = {
 	.reg_bits = 32,
 	.val_bits = 32,
 	.reg_stride = 4,

drivers/mmc/host/tifm_sd.c

@@ -13,6 +13,7 @@
 #include <linux/highmem.h>
 #include <linux/scatterlist.h>
 #include <linux/module.h>
+#include <linux/workqueue.h>
 #include <asm/io.h>
 
 #define DRIVER_NAME "tifm_sd"
@@ -97,7 +98,7 @@ struct tifm_sd {
 	unsigned int          clk_div;
 	unsigned long         timeout_jiffies;
 
-	struct tasklet_struct finish_tasklet;
+	struct work_struct    finish_bh_work;
 	struct timer_list     timer;
 	struct mmc_request    *req;
 
@@ -463,7 +464,7 @@ static void tifm_sd_check_status(struct tifm_sd *host)
 		}
 	}
 finish_request:
-	tasklet_schedule(&host->finish_tasklet);
+	queue_work(system_bh_wq, &host->finish_bh_work);
 }
 
 /* Called from interrupt handler */
@@ -723,9 +724,9 @@ static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq)
 	mmc_request_done(mmc, mrq);
 }
 
-static void tifm_sd_end_cmd(struct tasklet_struct *t)
+static void tifm_sd_end_cmd(struct work_struct *t)
 {
-	struct tifm_sd *host = from_tasklet(host, t, finish_tasklet);
+	struct tifm_sd *host = from_work(host, t, finish_bh_work);
 	struct tifm_dev *sock = host->dev;
 	struct mmc_host *mmc = tifm_get_drvdata(sock);
 	struct mmc_request *mrq;
@@ -960,7 +961,7 @@ static int tifm_sd_probe(struct tifm_dev *sock)
 	 */
 	mmc->max_busy_timeout = TIFM_MMCSD_REQ_TIMEOUT_MS;
 
-	tasklet_setup(&host->finish_tasklet, tifm_sd_end_cmd);
+	INIT_WORK(&host->finish_bh_work, tifm_sd_end_cmd);
 	timer_setup(&host->timer, tifm_sd_abort, 0);
 
 	mmc->ops = &tifm_sd_ops;
@@ -999,7 +1000,7 @@ static void tifm_sd_remove(struct tifm_dev *sock)
 	writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE);
 	spin_unlock_irqrestore(&sock->lock, flags);
 
-	tasklet_kill(&host->finish_tasklet);
+	cancel_work_sync(&host->finish_bh_work);
 
 	spin_lock_irqsave(&sock->lock, flags);
 	if (host->req) {
@@ -1009,7 +1010,7 @@ static void tifm_sd_remove(struct tifm_dev *sock)
 		host->req->cmd->error = -ENOMEDIUM;
 		if (host->req->stop)
 			host->req->stop->error = -ENOMEDIUM;
-		tasklet_schedule(&host->finish_tasklet);
+		queue_work(system_bh_wq, &host->finish_bh_work);
 	}
 	spin_unlock_irqrestore(&sock->lock, flags);
 	mmc_remove_host(mmc);

drivers/mmc/host/tmio_mmc.h

@@ -21,6 +21,7 @@
 #include <linux/scatterlist.h>
 #include <linux/spinlock.h>
 #include <linux/interrupt.h>
+#include <linux/workqueue.h>
 
 #define CTL_SD_CMD 0x00
 #define CTL_ARG_REG 0x04
@@ -139,9 +140,6 @@ struct tmio_mmc_host {
 	struct mmc_host         *mmc;
 	struct mmc_host_ops     ops;
 
-	/* Callbacks for clock / power control */
-	void (*set_pwr)(struct platform_device *host, int state);
-
 	/* pio related stuff */
 	struct scatterlist      *sg_ptr;
 	struct scatterlist      *sg_orig;
@@ -156,7 +154,7 @@ struct tmio_mmc_host {
 	bool			dma_on;
 	struct dma_chan		*chan_rx;
 	struct dma_chan		*chan_tx;
-	struct tasklet_struct	dma_issue;
+	struct work_struct	dma_issue;
 	struct scatterlist	bounce_sg;
 	u8			*bounce_buf;
 

drivers/mmc/host/tmio_mmc_core.c

@@ -608,7 +608,7 @@ static void tmio_mmc_cmd_irq(struct tmio_mmc_host *host, unsigned int stat)
 			} else {
 				tmio_mmc_disable_mmc_irqs(host,
 							  TMIO_MASK_READOP);
-				tasklet_schedule(&host->dma_issue);
+				queue_work(system_bh_wq, &host->dma_issue);
 			}
 		} else {
 			if (!host->dma_on) {
@@ -616,7 +616,7 @@ static void tmio_mmc_cmd_irq(struct tmio_mmc_host *host, unsigned int stat)
 			} else {
 				tmio_mmc_disable_mmc_irqs(host,
 							  TMIO_MASK_WRITEOP);
-				tasklet_schedule(&host->dma_issue);
+				queue_work(system_bh_wq, &host->dma_issue);
 			}
 		}
 	} else {
@@ -880,9 +880,6 @@ static void tmio_mmc_power_on(struct tmio_mmc_host *host, unsigned short vdd)
 
 	/* .set_ios() is returning void, so, no chance to report an error */
 
-	if (host->set_pwr)
-		host->set_pwr(host->pdev, 1);
-
 	if (!IS_ERR(mmc->supply.vmmc)) {
 		ret = mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
 		/*
@@ -916,9 +913,6 @@ static void tmio_mmc_power_off(struct tmio_mmc_host *host)
 
 	if (!IS_ERR(mmc->supply.vmmc))
 		mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
-
-	if (host->set_pwr)
-		host->set_pwr(host->pdev, 0);
 }
 
 static unsigned int tmio_mmc_get_timeout_cycles(struct tmio_mmc_host *host)
@@ -1160,8 +1154,6 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host)
 	if (pdata->flags & TMIO_MMC_USE_BUSY_TIMEOUT && !_host->get_timeout_cycles)
 		_host->get_timeout_cycles = tmio_mmc_get_timeout_cycles;
 
-	_host->set_pwr = pdata->set_pwr;
-
 	ret = tmio_mmc_init_ocr(_host);
 	if (ret < 0)
 		return ret;
@@ -1319,4 +1311,5 @@ int tmio_mmc_host_runtime_resume(struct device *dev)
 EXPORT_SYMBOL_GPL(tmio_mmc_host_runtime_resume);
 #endif
 
+MODULE_DESCRIPTION("TMIO MMC core driver");
 MODULE_LICENSE("GPL v2");

drivers/mmc/host/uniphier-sd.c

@@ -90,9 +90,9 @@ static void uniphier_sd_dma_endisable(struct tmio_mmc_host *host, int enable)
 }
 
 /* external DMA engine */
-static void uniphier_sd_external_dma_issue(struct tasklet_struct *t)
+static void uniphier_sd_external_dma_issue(struct work_struct *t)
 {
-	struct tmio_mmc_host *host = from_tasklet(host, t, dma_issue);
+	struct tmio_mmc_host *host = from_work(host, t, dma_issue);
 	struct uniphier_sd_priv *priv = uniphier_sd_priv(host);
 
 	uniphier_sd_dma_endisable(host, 1);
@@ -199,7 +199,7 @@ static void uniphier_sd_external_dma_request(struct tmio_mmc_host *host,
 	host->chan_rx = chan;
 	host->chan_tx = chan;
 
-	tasklet_setup(&host->dma_issue, uniphier_sd_external_dma_issue);
+	INIT_WORK(&host->dma_issue, uniphier_sd_external_dma_issue);
 }
 
 static void uniphier_sd_external_dma_release(struct tmio_mmc_host *host)
@@ -236,9 +236,9 @@ static const struct tmio_mmc_dma_ops uniphier_sd_external_dma_ops = {
 	.dataend = uniphier_sd_external_dma_dataend,
 };
 
-static void uniphier_sd_internal_dma_issue(struct tasklet_struct *t)
+static void uniphier_sd_internal_dma_issue(struct work_struct *t)
 {
-	struct tmio_mmc_host *host = from_tasklet(host, t, dma_issue);
+	struct tmio_mmc_host *host = from_work(host, t, dma_issue);
 	unsigned long flags;
 
 	spin_lock_irqsave(&host->lock, flags);
@@ -317,7 +317,7 @@ static void uniphier_sd_internal_dma_request(struct tmio_mmc_host *host,
 
 	host->chan_tx = (void *)0xdeadbeaf;
 
-	tasklet_setup(&host->dma_issue, uniphier_sd_internal_dma_issue);
+	INIT_WORK(&host->dma_issue, uniphier_sd_internal_dma_issue);
 }
 
 static void uniphier_sd_internal_dma_release(struct tmio_mmc_host *host)

drivers/mmc/host/via-sdmmc.c

@@ -12,6 +12,7 @@
 #include <linux/interrupt.h>
 
 #include <linux/mmc/host.h>
+#include <linux/workqueue.h>
 
 #define DRV_NAME	"via_sdmmc"
 
@@ -307,7 +308,7 @@ struct via_crdr_mmc_host {
 	struct sdhcreg pm_sdhc_reg;
 
 	struct work_struct carddet_work;
-	struct tasklet_struct finish_tasklet;
+	struct work_struct finish_bh_work;
 
 	struct timer_list timer;
 	spinlock_t lock;
@@ -643,7 +644,7 @@ static void via_sdc_finish_data(struct via_crdr_mmc_host *host)
 	if (data->stop)
 		via_sdc_send_command(host, data->stop);
 	else
-		tasklet_schedule(&host->finish_tasklet);
+		queue_work(system_bh_wq, &host->finish_bh_work);
 }
 
 static void via_sdc_finish_command(struct via_crdr_mmc_host *host)
@@ -653,7 +654,7 @@ static void via_sdc_finish_command(struct via_crdr_mmc_host *host)
 	host->cmd->error = 0;
 
 	if (!host->cmd->data)
-		tasklet_schedule(&host->finish_tasklet);
+		queue_work(system_bh_wq, &host->finish_bh_work);
 
 	host->cmd = NULL;
 }
@@ -682,7 +683,7 @@ static void via_sdc_request(struct mmc_host *mmc, struct mmc_request *mrq)
 	status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
 	if (!(status & VIA_CRDR_SDSTS_SLOTG) || host->reject) {
 		host->mrq->cmd->error = -ENOMEDIUM;
-		tasklet_schedule(&host->finish_tasklet);
+		queue_work(system_bh_wq, &host->finish_bh_work);
 	} else {
 		via_sdc_send_command(host, mrq->cmd);
 	}
@@ -848,7 +849,7 @@ static void via_sdc_cmd_isr(struct via_crdr_mmc_host *host, u16 intmask)
 		host->cmd->error = -EILSEQ;
 
 	if (host->cmd->error)
-		tasklet_schedule(&host->finish_tasklet);
+		queue_work(system_bh_wq, &host->finish_bh_work);
 	else if (intmask & VIA_CRDR_SDSTS_CRD)
 		via_sdc_finish_command(host);
 }
@@ -955,16 +956,16 @@ static void via_sdc_timeout(struct timer_list *t)
 				sdhost->cmd->error = -ETIMEDOUT;
 			else
 				sdhost->mrq->cmd->error = -ETIMEDOUT;
-			tasklet_schedule(&sdhost->finish_tasklet);
+			queue_work(system_bh_wq, &sdhost->finish_bh_work);
 		}
 	}
 
 	spin_unlock_irqrestore(&sdhost->lock, flags);
 }
 
-static void via_sdc_tasklet_finish(struct tasklet_struct *t)
+static void via_sdc_finish_bh_work(struct work_struct *t)
 {
-	struct via_crdr_mmc_host *host = from_tasklet(host, t, finish_tasklet);
+	struct via_crdr_mmc_host *host = from_work(host, t, finish_bh_work);
 	unsigned long flags;
 	struct mmc_request *mrq;
 
@@ -1005,7 +1006,7 @@ static void via_sdc_card_detect(struct work_struct *work)
 			pr_err("%s: Card removed during transfer!\n",
 			       mmc_hostname(host->mmc));
 			host->mrq->cmd->error = -ENOMEDIUM;
-			tasklet_schedule(&host->finish_tasklet);
+			queue_work(system_bh_wq, &host->finish_bh_work);
 		}
 
 		spin_unlock_irqrestore(&host->lock, flags);
@@ -1051,7 +1052,7 @@ static void via_init_mmc_host(struct via_crdr_mmc_host *host)
 
 	INIT_WORK(&host->carddet_work, via_sdc_card_detect);
 
-	tasklet_setup(&host->finish_tasklet, via_sdc_tasklet_finish);
+	INIT_WORK(&host->finish_bh_work, via_sdc_finish_bh_work);
 
 	addrbase = host->sdhc_mmiobase;
 	writel(0x0, addrbase + VIA_CRDR_SDINTMASK);
@@ -1193,7 +1194,7 @@ static void via_sd_remove(struct pci_dev *pcidev)
 		sdhost->mrq->cmd->error = -ENOMEDIUM;
 		if (sdhost->mrq->stop)
 			sdhost->mrq->stop->error = -ENOMEDIUM;
-		tasklet_schedule(&sdhost->finish_tasklet);
+		queue_work(system_bh_wq, &sdhost->finish_bh_work);
 	}
 	spin_unlock_irqrestore(&sdhost->lock, flags);
 
@@ -1203,7 +1204,7 @@ static void via_sd_remove(struct pci_dev *pcidev)
 
 	del_timer_sync(&sdhost->timer);
 
-	tasklet_kill(&sdhost->finish_tasklet);
+	cancel_work_sync(&sdhost->finish_bh_work);
 
 	/* switch off power */
 	gatt = readb(sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);

drivers/mmc/host/wbsd.c

@@ -459,7 +459,7 @@ static void wbsd_empty_fifo(struct wbsd_host *host)
 	 * FIFO threshold interrupts properly.
 	 */
 	if ((data->blocks * data->blksz - data->bytes_xfered) < 16)
-		tasklet_schedule(&host->fifo_tasklet);
+		queue_work(system_bh_wq, &host->fifo_bh_work);
 }
 
 static void wbsd_fill_fifo(struct wbsd_host *host)
@@ -524,7 +524,7 @@ static void wbsd_fill_fifo(struct wbsd_host *host)
 	 * 'FIFO empty' under certain conditions. So we
 	 * need to be a bit more pro-active.
 	 */
-	tasklet_schedule(&host->fifo_tasklet);
+	queue_work(system_bh_wq, &host->fifo_bh_work);
 }
 
 static void wbsd_prepare_data(struct wbsd_host *host, struct mmc_data *data)
@@ -746,7 +746,7 @@ static void wbsd_request(struct mmc_host *mmc, struct mmc_request *mrq)
 	struct mmc_command *cmd;
 
 	/*
-	 * Disable tasklets to avoid a deadlock.
+	 * Disable bh works to avoid a deadlock.
 	 */
 	spin_lock_bh(&host->lock);
 
@@ -821,7 +821,7 @@ static void wbsd_request(struct mmc_host *mmc, struct mmc_request *mrq)
 		 * Dirty fix for hardware bug.
 		 */
 		if (host->dma == -1)
-			tasklet_schedule(&host->fifo_tasklet);
+			queue_work(system_bh_wq, &host->fifo_bh_work);
 
 		spin_unlock_bh(&host->lock);
 
@@ -961,13 +961,13 @@ static void wbsd_reset_ignore(struct timer_list *t)
 	 * Card status might have changed during the
 	 * blackout.
 	 */
-	tasklet_schedule(&host->card_tasklet);
+	queue_work(system_bh_wq, &host->card_bh_work);
 
 	spin_unlock_bh(&host->lock);
 }
 
 /*
- * Tasklets
+ * BH Works
  */
 
 static inline struct mmc_data *wbsd_get_data(struct wbsd_host *host)
@@ -987,9 +987,9 @@ static inline struct mmc_data *wbsd_get_data(struct wbsd_host *host)
 	return host->mrq->cmd->data;
 }
 
-static void wbsd_tasklet_card(struct tasklet_struct *t)
+static void wbsd_card_bh_work(struct work_struct *t)
 {
-	struct wbsd_host *host = from_tasklet(host, t, card_tasklet);
+	struct wbsd_host *host = from_work(host, t, card_bh_work);
 	u8 csr;
 	int delay = -1;
 
@@ -1020,7 +1020,7 @@ static void wbsd_tasklet_card(struct tasklet_struct *t)
 			wbsd_reset(host);
 
 			host->mrq->cmd->error = -ENOMEDIUM;
-			tasklet_schedule(&host->finish_tasklet);
+			queue_work(system_bh_wq, &host->finish_bh_work);
 		}
 
 		delay = 0;
@@ -1036,9 +1036,9 @@ static void wbsd_tasklet_card(struct tasklet_struct *t)
 		mmc_detect_change(host->mmc, msecs_to_jiffies(delay));
 }
 
-static void wbsd_tasklet_fifo(struct tasklet_struct *t)
+static void wbsd_fifo_bh_work(struct work_struct *t)
 {
-	struct wbsd_host *host = from_tasklet(host, t, fifo_tasklet);
+	struct wbsd_host *host = from_work(host, t, fifo_bh_work);
 	struct mmc_data *data;
 
 	spin_lock(&host->lock);
@@ -1060,16 +1060,16 @@ static void wbsd_tasklet_fifo(struct tasklet_struct *t)
 	 */
 	if (host->num_sg == 0) {
 		wbsd_write_index(host, WBSD_IDX_FIFOEN, 0);
-		tasklet_schedule(&host->finish_tasklet);
+		queue_work(system_bh_wq, &host->finish_bh_work);
 	}
 
 end:
 	spin_unlock(&host->lock);
 }
 
-static void wbsd_tasklet_crc(struct tasklet_struct *t)
+static void wbsd_crc_bh_work(struct work_struct *t)
 {
-	struct wbsd_host *host = from_tasklet(host, t, crc_tasklet);
+	struct wbsd_host *host = from_work(host, t, crc_bh_work);
 	struct mmc_data *data;
 
 	spin_lock(&host->lock);
@@ -1085,15 +1085,15 @@ static void wbsd_tasklet_crc(struct tasklet_struct *t)
 
 	data->error = -EILSEQ;
 
-	tasklet_schedule(&host->finish_tasklet);
+	queue_work(system_bh_wq, &host->finish_bh_work);
 
 end:
 	spin_unlock(&host->lock);
 }
 
-static void wbsd_tasklet_timeout(struct tasklet_struct *t)
+static void wbsd_timeout_bh_work(struct work_struct *t)
 {
-	struct wbsd_host *host = from_tasklet(host, t, timeout_tasklet);
+	struct wbsd_host *host = from_work(host, t, timeout_bh_work);
 	struct mmc_data *data;
 
 	spin_lock(&host->lock);
@@ -1109,15 +1109,15 @@ static void wbsd_tasklet_timeout(struct tasklet_struct *t)
 
 	data->error = -ETIMEDOUT;
 
-	tasklet_schedule(&host->finish_tasklet);
+	queue_work(system_bh_wq, &host->finish_bh_work);
 
 end:
 	spin_unlock(&host->lock);
 }
 
-static void wbsd_tasklet_finish(struct tasklet_struct *t)
+static void wbsd_finish_bh_work(struct work_struct *t)
 {
-	struct wbsd_host *host = from_tasklet(host, t, finish_tasklet);
+	struct wbsd_host *host = from_work(host, t, finish_bh_work);
 	struct mmc_data *data;
 
 	spin_lock(&host->lock);
@@ -1156,18 +1156,18 @@ static irqreturn_t wbsd_irq(int irq, void *dev_id)
 	host->isr |= isr;
 
 	/*
-	 * Schedule tasklets as needed.
+	 * Schedule bh work as needed.
 	 */
 	if (isr & WBSD_INT_CARD)
-		tasklet_schedule(&host->card_tasklet);
+		queue_work(system_bh_wq, &host->card_bh_work);
 	if (isr & WBSD_INT_FIFO_THRE)
-		tasklet_schedule(&host->fifo_tasklet);
+		queue_work(system_bh_wq, &host->fifo_bh_work);
 	if (isr & WBSD_INT_CRC)
-		tasklet_hi_schedule(&host->crc_tasklet);
+		queue_work(system_bh_highpri_wq, &host->crc_bh_work);
 	if (isr & WBSD_INT_TIMEOUT)
-		tasklet_hi_schedule(&host->timeout_tasklet);
+		queue_work(system_bh_highpri_wq, &host->timeout_bh_work);
 	if (isr & WBSD_INT_TC)
-		tasklet_schedule(&host->finish_tasklet);
+		queue_work(system_bh_wq, &host->finish_bh_work);
 
 	return IRQ_HANDLED;
 }
@@ -1443,13 +1443,13 @@ static int wbsd_request_irq(struct wbsd_host *host, int irq)
 	int ret;
 
 	/*
-	 * Set up tasklets. Must be done before requesting interrupt.
+	 * Set up bh works. Must be done before requesting interrupt.
 	 */
-	tasklet_setup(&host->card_tasklet, wbsd_tasklet_card);
-	tasklet_setup(&host->fifo_tasklet, wbsd_tasklet_fifo);
-	tasklet_setup(&host->crc_tasklet, wbsd_tasklet_crc);
-	tasklet_setup(&host->timeout_tasklet, wbsd_tasklet_timeout);
-	tasklet_setup(&host->finish_tasklet, wbsd_tasklet_finish);
+	INIT_WORK(&host->card_bh_work, wbsd_card_bh_work);
+	INIT_WORK(&host->fifo_bh_work, wbsd_fifo_bh_work);
+	INIT_WORK(&host->crc_bh_work, wbsd_crc_bh_work);
+	INIT_WORK(&host->timeout_bh_work, wbsd_timeout_bh_work);
+	INIT_WORK(&host->finish_bh_work, wbsd_finish_bh_work);
 
 	/*
 	 * Allocate interrupt.
@@ -1472,11 +1472,11 @@ static void  wbsd_release_irq(struct wbsd_host *host)
 
 	host->irq = 0;
 
-	tasklet_kill(&host->card_tasklet);
-	tasklet_kill(&host->fifo_tasklet);
-	tasklet_kill(&host->crc_tasklet);
-	tasklet_kill(&host->timeout_tasklet);
-	tasklet_kill(&host->finish_tasklet);
+	cancel_work_sync(&host->card_bh_work);
+	cancel_work_sync(&host->fifo_bh_work);
+	cancel_work_sync(&host->crc_bh_work);
+	cancel_work_sync(&host->timeout_bh_work);
+	cancel_work_sync(&host->finish_bh_work);
 }
 
 /*

drivers/mmc/host/wbsd.h

@@ -171,11 +171,11 @@ struct wbsd_host
 	int			irq;		/* Interrupt */
 	int			dma;		/* DMA channel */
 
-	struct tasklet_struct	card_tasklet;	/* Tasklet structures */
-	struct tasklet_struct	fifo_tasklet;
-	struct tasklet_struct	crc_tasklet;
-	struct tasklet_struct	timeout_tasklet;
-	struct tasklet_struct	finish_tasklet;
+	struct work_struct	card_bh_work;	/* Work structures */
+	struct work_struct	fifo_bh_work;
+	struct work_struct	crc_bh_work;
+	struct work_struct	timeout_bh_work;
+	struct work_struct	finish_bh_work;
 
 	struct timer_list	ignore_timer;	/* Ignore detection timer */
 };

include/linux/mfd/tmio.h

@@ -100,8 +100,6 @@ struct tmio_mmc_data {
 	dma_addr_t			dma_rx_offset;
 	unsigned int			max_blk_count;
 	unsigned short			max_segs;
-	void (*set_pwr)(struct platform_device *host, int state);
-	void (*set_clk_div)(struct platform_device *host, int state);
 };
 
 /*