path: root/target/arm/solidrun-imx6/patches/3.16.1/rmk-wifi.patch

diff -Nur linux-3.16.orig/arch/arm/boot/dts/imx6qdl-microsom.dtsi linux-3.16/arch/arm/boot/dts/imx6qdl-microsom.dtsi
--- linux-3.16.orig/arch/arm/boot/dts/imx6qdl-microsom.dtsi	2014-08-04 00:25:02.000000000 +0200
+++ linux-3.16/arch/arm/boot/dts/imx6qdl-microsom.dtsi	2014-08-11 12:34:43.603892919 +0200
@@ -2,14 +2,92 @@
  * Copyright (C) 2013,2014 Russell King
  */
 
+#include <dt-bindings/gpio/gpio.h>
+/ {
+	regulators {
+		compatible = "simple-bus";
+
+		reg_brcm_osc: brcm-osc-reg {
+			compatible = "regulator-fixed";
+			enable-active-high;
+			gpio = <&gpio5 5 0>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&pinctrl_microsom_brcm_osc_reg>;
+			regulator-name = "brcm_osc_reg";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-always-on;
+			regulator-boot-on;
+		};
+
+		reg_brcm: brcm-reg {
+			compatible = "regulator-fixed";
+			enable-active-high;
+			gpio = <&gpio3 19 0>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&pinctrl_microsom_brcm_reg>;
+			regulator-name = "brcm_reg";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			startup-delay-us = <200000>;
+		};
+	};
+};
+
 &iomuxc {
 	microsom {
+		pinctrl_microsom_brcm_bt: microsom-brcm-bt {
+			fsl,pins = <
+				MX6QDL_PAD_CSI0_DAT14__GPIO6_IO00	0x40013070
+				MX6QDL_PAD_CSI0_DAT15__GPIO6_IO01	0x40013070
+				MX6QDL_PAD_CSI0_DAT18__GPIO6_IO04	0x40013070
+			>;
+		};
+
+		pinctrl_microsom_brcm_osc_reg: microsom-brcm-osc-reg {
+			fsl,pins = <
+				MX6QDL_PAD_DISP0_DAT11__GPIO5_IO05	0x40013070
+			>;
+		};
+
+		pinctrl_microsom_brcm_reg: microsom-brcm-reg {
+			fsl,pins = <
+				MX6QDL_PAD_EIM_D19__GPIO3_IO19		0x40013070
+			>;
+		};
+
+		pinctrl_microsom_brcm_wifi: microsom-brcm-wifi {
+			fsl,pins = <
+				MX6QDL_PAD_GPIO_8__XTALOSC_REF_CLK_32K	0x1b0b0
+				MX6QDL_PAD_CSI0_DATA_EN__GPIO5_IO20	0x40013070
+				MX6QDL_PAD_CSI0_DAT8__GPIO5_IO26	0x40013070
+				MX6QDL_PAD_CSI0_DAT9__GPIO5_IO27	0x40013070
+			>;
+		};
 		pinctrl_microsom_uart1: microsom-uart1 {
 			fsl,pins = <
 				MX6QDL_PAD_CSI0_DAT10__UART1_TX_DATA	0x1b0b1
 				MX6QDL_PAD_CSI0_DAT11__UART1_RX_DATA	0x1b0b1
 			>;
 		};
+		pinctrl_microsom_uart4_1: microsom-uart4 {
+			fsl,pins = <
+				MX6QDL_PAD_CSI0_DAT12__UART4_TX_DATA 0x1b0b1
+				MX6QDL_PAD_CSI0_DAT13__UART4_RX_DATA 0x1b0b1
+				MX6QDL_PAD_CSI0_DAT16__UART4_RTS_B 0x1b0b1
+				MX6QDL_PAD_CSI0_DAT17__UART4_CTS_B 0x1b0b1
+			>;
+		};
+		pinctrl_microsom_usdhc1: microsom-usdhc1 {
+			fsl,pins = <
+				MX6QDL_PAD_SD1_CMD__SD1_CMD    0x17059
+				MX6QDL_PAD_SD1_CLK__SD1_CLK    0x10059
+				MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x17059
+				MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x17059
+				MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x17059
+				MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x17059
+			>;
+		};
 	};
 };
 
@@ -18,3 +96,23 @@
 	pinctrl-0 = <&pinctrl_microsom_uart1>;
 	status = "okay";
 };
+
+/* UART4 - Connected to optional BRCM Wifi/BT/FM */
+&uart4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_microsom_brcm_bt &pinctrl_microsom_uart4_1>;
+	fsl,uart-has-rtscts;
+	status = "okay";
+};
+
+/* USDHC1 - Connected to optional BRCM Wifi/BT/FM */
+&usdhc1 {
+	card-external-vcc-supply = <&reg_brcm>;
+	card-reset-gpios = <&gpio5 26 GPIO_ACTIVE_LOW>, <&gpio6 0 GPIO_ACTIVE_LOW>;
+	keep-power-in-suspend;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_microsom_brcm_wifi &pinctrl_microsom_usdhc1>;
+	vmmc-supply = <&reg_brcm>;
+	status = "okay";
+};
diff -Nur linux-3.16.orig/Documentation/devicetree/bindings/mmc/mmc.txt linux-3.16/Documentation/devicetree/bindings/mmc/mmc.txt
--- linux-3.16.orig/Documentation/devicetree/bindings/mmc/mmc.txt	2014-08-04 00:25:02.000000000 +0200
+++ linux-3.16/Documentation/devicetree/bindings/mmc/mmc.txt	2014-08-11 12:34:15.535644516 +0200
@@ -5,6 +5,8 @@
 Interpreted by the OF core:
 - reg: Registers location and length.
 - interrupts: Interrupts used by the MMC controller.
+- clocks: Clocks needed for the host controller, if any.
+- clock-names: Goes with clocks above.
 
 Card detection:
 If no property below is supplied, host native card detect is used.
@@ -41,6 +43,15 @@
 - mmc-hs400-1_8v: eMMC HS400 mode(1.8V I/O) is supported
 - mmc-hs400-1_2v: eMMC HS400 mode(1.2V I/O) is supported
 
+Card power and reset control:
+The following properties can be specified for cases where the MMC
+peripheral needs additional reset, regulator and clock lines. It is for
+example common for WiFi/BT adapters to have these separate from the main
+MMC bus:
+  - card-reset-gpios: Specify GPIOs for card reset (reset active low)
+  - card-external-vcc-supply: Regulator to drive (independent) card VCC
+  - clock with name "card_ext_clock": External clock provided to the card
+
 *NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line
 polarity properties, we have to fix the meaning of the "normal" and "inverted"
 line levels. We choose to follow the SDHCI standard, which specifies both those
diff -Nur linux-3.16.orig/drivers/mmc/core/core.c linux-3.16/drivers/mmc/core/core.c
--- linux-3.16.orig/drivers/mmc/core/core.c	2014-08-04 00:25:02.000000000 +0200
+++ linux-3.16/drivers/mmc/core/core.c	2014-08-11 12:34:15.555644693 +0200
@@ -13,11 +13,13 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/clk.h>
 #include <linux/completion.h>
 #include <linux/device.h>
 #include <linux/delay.h>
 #include <linux/pagemap.h>
 #include <linux/err.h>
+#include <linux/gpio/consumer.h>
 #include <linux/leds.h>
 #include <linux/scatterlist.h>
 #include <linux/log2.h>
@@ -1515,6 +1517,43 @@
 	mmc_host_clk_release(host);
 }
 
+static void mmc_card_power_up(struct mmc_host *host)
+{
+	int i;
+	struct gpio_desc **gds = host->card_reset_gpios;
+
+	for (i = 0; i < ARRAY_SIZE(host->card_reset_gpios); i++) {
+		if (gds[i]) {
+			dev_dbg(host->parent, "Asserting reset line %d", i);
+			gpiod_set_value(gds[i], 1);
+		}
+	}
+
+	if (host->card_regulator) {
+		dev_dbg(host->parent, "Enabling external regulator");
+		if (regulator_enable(host->card_regulator))
+			dev_err(host->parent, "Failed to enable external regulator");
+	}
+
+	if (host->card_clk) {
+		dev_dbg(host->parent, "Enabling external clock");
+		clk_prepare_enable(host->card_clk);
+	}
+
+	/* 2ms delay to let clocks and power settle */
+	mmc_delay(20);
+
+	for (i = 0; i < ARRAY_SIZE(host->card_reset_gpios); i++) {
+		if (gds[i]) {
+			dev_dbg(host->parent, "Deasserting reset line %d", i);
+			gpiod_set_value(gds[i], 0);
+		}
+	}
+
+	/* 2ms delay to after reset release */
+	mmc_delay(20);
+}
+
 /*
  * Apply power to the MMC stack.  This is a two-stage process.
  * First, we enable power to the card without the clock running.
@@ -1531,6 +1570,9 @@
 	if (host->ios.power_mode == MMC_POWER_ON)
 		return;
 
+	/* Power up the card/module first, if needed */
+	mmc_card_power_up(host);
+
 	mmc_host_clk_hold(host);
 
 	host->ios.vdd = fls(ocr) - 1;
diff -Nur linux-3.16.orig/drivers/mmc/core/host.c linux-3.16/drivers/mmc/core/host.c
--- linux-3.16.orig/drivers/mmc/core/host.c	2014-08-04 00:25:02.000000000 +0200
+++ linux-3.16/drivers/mmc/core/host.c	2014-08-11 12:34:27.995754826 +0200
@@ -12,14 +12,18 @@
  *  MMC host class device management
  */
 
+#include <linux/kernel.h>
+#include <linux/clk.h>
 #include <linux/device.h>
 #include <linux/err.h>
+#include <linux/gpio/consumer.h>
 #include <linux/idr.h>
 #include <linux/of.h>
 #include <linux/of_gpio.h>
 #include <linux/pagemap.h>
 #include <linux/export.h>
 #include <linux/leds.h>
+#include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <linux/suspend.h>
 
@@ -461,6 +465,66 @@
 
 EXPORT_SYMBOL(mmc_of_parse);
 
+static int mmc_of_parse_child(struct mmc_host *host)
+{
+	struct device_node *np;
+	struct clk *clk;
+	int i;
+
+	if (!host->parent || !host->parent->of_node)
+		return 0;
+
+	np = host->parent->of_node;
+
+	host->card_regulator = regulator_get(host->parent, "card-external-vcc");
+	if (IS_ERR(host->card_regulator)) {
+		if (PTR_ERR(host->card_regulator) == -EPROBE_DEFER)
+			return PTR_ERR(host->card_regulator);
+		host->card_regulator = NULL;
+	}
+
+	/* Parse card power/reset/clock control */
+	if (of_find_property(np, "card-reset-gpios", NULL)) {
+		struct gpio_desc *gpd;
+		int level = 0;
+
+		/*
+		 * If the regulator is enabled, then we can hold the
+		 * card in reset with an active high resets.  Otherwise,
+		 * hold the resets low.
+		 */
+		if (host->card_regulator && regulator_is_enabled(host->card_regulator))
+			level = 1;
+
+		for (i = 0; i < ARRAY_SIZE(host->card_reset_gpios); i++) {
+			gpd = devm_gpiod_get_index(host->parent, "card-reset", i);
+			if (IS_ERR(gpd)) {
+				if (PTR_ERR(gpd) == -EPROBE_DEFER)
+					return PTR_ERR(gpd);
+				break;
+			}
+			gpiod_direction_output(gpd, gpiod_is_active_low(gpd) | level);
+			host->card_reset_gpios[i] = gpd;
+		}
+
+		gpd = devm_gpiod_get_index(host->parent, "card-reset", ARRAY_SIZE(host->card_reset_gpios));
+		if (!IS_ERR(gpd)) {
+			dev_warn(host->parent, "More reset gpios than we can handle");
+			gpiod_put(gpd);
+		}
+	}
+
+	clk = of_clk_get_by_name(np, "card_ext_clock");
+	if (IS_ERR(clk)) {
+		if (PTR_ERR(clk) == -EPROBE_DEFER)
+			return PTR_ERR(clk);
+		clk = NULL;
+	}
+	host->card_clk = clk;
+
+	return 0;
+}
+
 /**
  *	mmc_alloc_host - initialise the per-host structure.
  *	@extra: sizeof private data structure
@@ -540,6 +604,10 @@
 {
 	int err;
 
+	err = mmc_of_parse_child(host);
+	if (err)
+		return err;
+
 	WARN_ON((host->caps & MMC_CAP_SDIO_IRQ) &&
 		!host->ops->enable_sdio_irq);
 
diff -Nur linux-3.16.orig/drivers/mmc/host/dw_mmc.c linux-3.16/drivers/mmc/host/dw_mmc.c
--- linux-3.16.orig/drivers/mmc/host/dw_mmc.c	2014-08-04 00:25:02.000000000 +0200
+++ linux-3.16/drivers/mmc/host/dw_mmc.c	2014-08-11 12:34:22.043702140 +0200
@@ -2049,6 +2049,8 @@
 	if (!mmc)
 		return -ENOMEM;
 
+	mmc_of_parse(mmc);
+
 	slot = mmc_priv(mmc);
 	slot->id = id;
 	slot->mmc = mmc;
diff -Nur linux-3.16.orig/drivers/mmc/host/Kconfig linux-3.16/drivers/mmc/host/Kconfig
--- linux-3.16.orig/drivers/mmc/host/Kconfig	2014-08-04 00:25:02.000000000 +0200
+++ linux-3.16/drivers/mmc/host/Kconfig	2014-08-11 12:34:03.391536946 +0200
@@ -25,8 +25,7 @@
 	  If unsure, say N.
 
 config MMC_SDHCI
-	tristate "Secure Digital Host Controller Interface support"
-	depends on HAS_DMA
+	tristate
 	help
 	  This selects the generic Secure Digital Host Controller Interface.
 	  It is used by manufacturers such as Texas Instruments(R), Ricoh(R)
@@ -59,7 +58,8 @@
 
 config MMC_SDHCI_PCI
 	tristate "SDHCI support on PCI bus"
-	depends on MMC_SDHCI && PCI
+	depends on PCI && HAS_DMA
+	select MMC_SDHCI
 	help
 	  This selects the PCI Secure Digital Host Controller Interface.
 	  Most controllers found today are PCI devices.
@@ -83,7 +83,8 @@
 
 config MMC_SDHCI_ACPI
 	tristate "SDHCI support for ACPI enumerated SDHCI controllers"
-	depends on MMC_SDHCI && ACPI
+	depends on ACPI && HAS_DMA
+	select MMC_SDHCI
 	help
 	  This selects support for ACPI enumerated SDHCI controllers,
 	  identified by ACPI Compatibility ID PNP0D40 or specific
@@ -94,8 +95,8 @@
 	  If unsure, say N.
 
 config MMC_SDHCI_PLTFM
-	tristate "SDHCI platform and OF driver helper"
-	depends on MMC_SDHCI
+	tristate
+	select MMC_SDHCI
 	help
 	  This selects the common helper functions support for Secure Digital
 	  Host Controller Interface based platform and OF drivers.
@@ -106,8 +107,8 @@
 
 config MMC_SDHCI_OF_ARASAN
 	tristate "SDHCI OF support for the Arasan SDHCI controllers"
-	depends on MMC_SDHCI_PLTFM
-	depends on OF
+	depends on OF && HAS_DMA
+	select MMC_SDHCI_PLTFM
 	help
 	  This selects the Arasan Secure Digital Host Controller Interface
 	  (SDHCI). This hardware is found e.g. in Xilinx' Zynq SoC.
@@ -118,9 +119,9 @@
 
 config MMC_SDHCI_OF_ESDHC
 	tristate "SDHCI OF support for the Freescale eSDHC controller"
-	depends on MMC_SDHCI_PLTFM
-	depends on PPC_OF
+	depends on PPC_OF && HAS_DMA
 	select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
+	select MMC_SDHCI_PLTFM
 	help
 	  This selects the Freescale eSDHC controller support.
 
@@ -130,9 +131,9 @@
 
 config MMC_SDHCI_OF_HLWD
 	tristate "SDHCI OF support for the Nintendo Wii SDHCI controllers"
-	depends on MMC_SDHCI_PLTFM
-	depends on PPC_OF
+	depends on PPC_OF && HAS_DMA
 	select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
+	select MMC_SDHCI_PLTFM
 	help
 	  This selects the Secure Digital Host Controller Interface (SDHCI)
 	  found in the "Hollywood" chipset of the Nintendo Wii video game
@@ -144,8 +145,8 @@
 
 config MMC_SDHCI_CNS3XXX
 	tristate "SDHCI support on the Cavium Networks CNS3xxx SoC"
-	depends on ARCH_CNS3XXX
-	depends on MMC_SDHCI_PLTFM
+	depends on ARCH_CNS3XXX && HAS_DMA
+	select MMC_SDHCI_PLTFM
 	help
 	  This selects the SDHCI support for CNS3xxx System-on-Chip devices.
 
@@ -155,9 +156,9 @@
 
 config MMC_SDHCI_ESDHC_IMX
 	tristate "SDHCI support for the Freescale eSDHC/uSDHC i.MX controller"
-	depends on ARCH_MXC
-	depends on MMC_SDHCI_PLTFM
+	depends on ARCH_MXC && HAS_DMA
 	select MMC_SDHCI_IO_ACCESSORS
+	select MMC_SDHCI_PLTFM
 	help
 	  This selects the Freescale eSDHC/uSDHC controller support
 	  found on i.MX25, i.MX35 i.MX5x and i.MX6x.
@@ -168,9 +169,9 @@
 
 config MMC_SDHCI_DOVE
 	tristate "SDHCI support on Marvell's Dove SoC"
-	depends on ARCH_DOVE || MACH_DOVE
-	depends on MMC_SDHCI_PLTFM
+	depends on (ARCH_DOVE || MACH_DOVE) && HAS_DMA
 	select MMC_SDHCI_IO_ACCESSORS
+	select MMC_SDHCI_PLTFM
 	help
 	  This selects the Secure Digital Host Controller Interface in
 	  Marvell's Dove SoC.
@@ -181,9 +182,9 @@
 
 config MMC_SDHCI_TEGRA
 	tristate "SDHCI platform support for the Tegra SD/MMC Controller"
-	depends on ARCH_TEGRA
-	depends on MMC_SDHCI_PLTFM
+	depends on ARCH_TEGRA && HAS_DMA
 	select MMC_SDHCI_IO_ACCESSORS
+	select MMC_SDHCI_PLTFM
 	help
 	  This selects the Tegra SD/MMC controller. If you have a Tegra
 	  platform with SD or MMC devices, say Y or M here.
@@ -192,7 +193,8 @@
 
 config MMC_SDHCI_S3C
 	tristate "SDHCI support on Samsung S3C SoC"
-	depends on MMC_SDHCI && PLAT_SAMSUNG
+	depends on PLAT_SAMSUNG && HAS_DMA
+	select MMC_SDHCI
 	help
 	  This selects the Secure Digital Host Controller Interface (SDHCI)
 	  often referrered to as the HSMMC block in some of the Samsung S3C
@@ -204,8 +206,8 @@
 
 config MMC_SDHCI_SIRF
 	tristate "SDHCI support on CSR SiRFprimaII and SiRFmarco SoCs"
-	depends on ARCH_SIRF
-	depends on MMC_SDHCI_PLTFM
+	depends on ARCH_SIRF && HAS_DMA
+	select MMC_SDHCI_PLTFM
 	help
 	  This selects the SDHCI support for SiRF System-on-Chip devices.
 
@@ -215,8 +217,8 @@
 
 config MMC_SDHCI_PXAV3
 	tristate "Marvell MMP2 SD Host Controller support (PXAV3)"
-	depends on CLKDEV_LOOKUP
-	depends on MMC_SDHCI_PLTFM
+	depends on CLKDEV_LOOKUP && HAS_DMA
+	select MMC_SDHCI_PLTFM
 	default CPU_MMP2
 	help
 	  This selects the Marvell(R) PXAV3 SD Host Controller.
@@ -227,8 +229,8 @@
 
 config MMC_SDHCI_PXAV2
 	tristate "Marvell PXA9XX SD Host Controller support (PXAV2)"
-	depends on CLKDEV_LOOKUP
-	depends on MMC_SDHCI_PLTFM
+	depends on CLKDEV_LOOKUP && HAS_DMA
+	select MMC_SDHCI_PLTFM
 	default CPU_PXA910
 	help
 	  This selects the Marvell(R) PXAV2 SD Host Controller.
@@ -239,7 +241,8 @@
 
 config MMC_SDHCI_SPEAR
 	tristate "SDHCI support on ST SPEAr platform"
-	depends on MMC_SDHCI && PLAT_SPEAR
+	depends on PLAT_SPEAR && HAS_DMA
+	select MMC_SDHCI
 	help
 	  This selects the Secure Digital Host Controller Interface (SDHCI)
 	  often referrered to as the HSMMC block in some of the ST SPEAR range
@@ -261,8 +264,8 @@
 
 config MMC_SDHCI_BCM_KONA
 	tristate "SDHCI support on Broadcom KONA platform"
-	depends on ARCH_BCM_MOBILE
-	depends on MMC_SDHCI_PLTFM
+	depends on ARCH_BCM_MOBILE && HAS_DMA
+	select MMC_SDHCI_PLTFM
 	help
 	  This selects the Broadcom Kona Secure Digital Host Controller
 	  Interface(SDHCI) support.
@@ -272,9 +275,9 @@
 
 config MMC_SDHCI_BCM2835
 	tristate "SDHCI platform support for the BCM2835 SD/MMC Controller"
-	depends on ARCH_BCM2835
-	depends on MMC_SDHCI_PLTFM
+	depends on ARCH_BCM2835 && HAS_DMA
 	select MMC_SDHCI_IO_ACCESSORS
+	select MMC_SDHCI_PLTFM
 	help
 	  This selects the BCM2835 SD/MMC controller. If you have a BCM2835
 	  platform with SD or MMC devices, say Y or M here.
diff -Nur linux-3.16.orig/drivers/mmc/host/sdhci.c linux-3.16/drivers/mmc/host/sdhci.c
--- linux-3.16.orig/drivers/mmc/host/sdhci.c	2014-08-04 00:25:02.000000000 +0200
+++ linux-3.16/drivers/mmc/host/sdhci.c	2014-08-11 12:34:08.763584537 +0200
@@ -1530,7 +1530,6 @@
 			host->ops->set_clock(host, host->clock);
 		}
 
-
 		/* Reset SD Clock Enable */
 		clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
 		clk &= ~SDHCI_CLOCK_CARD_EN;
@@ -1763,9 +1762,6 @@
 		ctrl |= SDHCI_CTRL_VDD_180;
 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
 
-		/* Wait for 5ms */
-		usleep_range(5000, 5500);
-
 		/* 1.8V regulator output should be stable within 5 ms */
 		ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
 		if (ctrl & SDHCI_CTRL_VDD_180)
diff -Nur linux-3.16.orig/include/linux/mmc/host.h linux-3.16/include/linux/mmc/host.h
--- linux-3.16.orig/include/linux/mmc/host.h	2014-08-04 00:25:02.000000000 +0200
+++ linux-3.16/include/linux/mmc/host.h	2014-08-11 12:34:15.559644729 +0200
@@ -298,6 +298,11 @@
 	unsigned long           clkgate_delay;
 #endif
 
+	/* card specific properties to deal with power and reset */
+	struct regulator	*card_regulator; /* External VCC needed by the card */
+	struct gpio_desc	*card_reset_gpios[2]; /* External resets, active low */
+	struct clk		*card_clk;	/* External clock needed by the card */
+
 	/* host specific block data */
 	unsigned int		max_seg_size;	/* see blk_queue_max_segment_size */
 	unsigned short		max_segs;	/* see blk_queue_max_segments */