Merge branch 'avr32-arch' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6

arch/avr32/boards/atngw100/Kconfig

@@ -2,8 +2,15 @@
 
 if BOARD_ATNGW100
 
+choice
+	prompt "Select an NGW100 add-on board to support"
+	default BOARD_ATNGW100_ADDON_NONE
+
+config BOARD_ATNGW100_ADDON_NONE
+	bool "None"
+
 config BOARD_ATNGW100_EVKLCD10X
-	bool "Add support for EVKLCD10X addon board"
+	bool "EVKLCD10X addon board"
 	help
 	  This enables support for the EVKLCD100 (QVGA) or EVKLCD101 (VGA)
 	  addon board for the NGW100. By enabling this the LCD controller and
@@ -14,7 +21,19 @@ config BOARD_ATNGW100_EVKLCD10X
 	  The MCI pins can be reenabled by editing the "add device function" but
 	  this may break the setup for other displays that use these pins.
 
-	  Choose 'Y' here if you have a EVKLCD100/101 connected to the NGW100.
+config BOARD_ATNGW100_MRMT
+	bool "Mediama RMT1/2 add-on board"
+	help
+	  This enables support for the Mediama RMT1 or RMT2 board.
+	  RMT provides LCD support, AC97 codec and other
+	  optional peripherals to the Atmel NGW100.
+
+	  This choice disables the detect pin and the write-protect pin for the
+	  MCI platform device, since it conflicts with the LCD platform device.
+	  The MCI pins can be reenabled by editing the "add device function" but
+	  this may break the setup for other displays that use these pins.
+
+endchoice
 
 choice
 	prompt "LCD panel resolution on EVKLCD10X"
@@ -32,4 +51,8 @@ config BOARD_ATNGW100_EVKLCD10X_POW_QVGA
 
 endchoice
 
+if BOARD_ATNGW100_MRMT
+source	"arch/avr32/boards/atngw100/Kconfig_mrmt"
+endif
+
 endif	# BOARD_ATNGW100

arch/avr32/boards/atngw100/Kconfig_mrmt

+# RMT for NGW100 customization
+
+choice
+	prompt "RMT Version"
+	help
+	  Select the RMTx board version.
+
+config BOARD_MRMT_REV1
+	bool "RMT1"
+config BOARD_MRMT_REV2
+	bool "RMT2"
+
+endchoice
+
+config BOARD_MRMT_AC97
+	bool "Enable AC97 CODEC"
+	help
+	  Enable the UCB1400 AC97 CODEC driver.
+
+choice
+	prompt "Touchscreen Driver"
+	default BOARD_MRMT_ADS7846_TS
+
+config BOARD_MRMT_UCB1400_TS
+	bool "Use UCB1400 Touchscreen"
+
+config BOARD_MRMT_ADS7846_TS
+	bool "Use ADS7846 Touchscreen"
+
+endchoice
+
+choice
+	prompt "RMTx LCD Selection"
+	default BOARD_MRMT_LCD_DISABLE
+
+config BOARD_MRMT_LCD_DISABLE
+	bool "LCD Disabled"
+
+config BOARD_MRMT_LCD_LQ043T3DX0X
+	bool "Sharp LQ043T3DX0x or compatible"
+	help
+	  If using RMT2, be sure to load the resistor pack selectors accordingly
+
+if BOARD_MRMT_REV2
+config BOARD_MRMT_LCD_KWH043GM08
+	bool "Formike KWH043GM08 or compatible"
+	help
+	  Be sure to load the RMT2 resistor pack selectors accordingly
+endif
+
+endchoice
+
+if !BOARD_MRMT_LCD_DISABLE
+config BOARD_MRMT_BL_PWM
+	bool "Use PWM control for LCD Backlight"
+	help
+		Use PWM driver for controlling LCD Backlight.
+		Otherwise, LCD Backlight is always on.
+endif
+
+config BOARD_MRMT_RTC_I2C
+	bool "Use External RTC on I2C Bus"
+	help
+		RMT1 has an optional RTC device on the I2C bus.
+		It is a SII S35390A.  Be sure to select the
+		matching RTC driver.
+
+choice
+	prompt "Wireless Module on ttyS2"
+	default BOARD_MRMT_WIRELESS_ZB
+
+config BOARD_MRMT_WIRELESS_ZB
+	bool "Use ZigBee/802.15.4 Module"
+
+config BOARD_MRMT_WIRELESS_BT
+	bool "Use Bluetooth (HCI) Module"
+
+config BOARD_MRMT_WIRELESS_NONE
+	bool "Not Installed"
+endchoice

arch/avr32/boards/atngw100/Makefile

 obj-y					+= setup.o flash.o
 obj-$(CONFIG_BOARD_ATNGW100_EVKLCD10X)	+= evklcd10x.o
+obj-$(CONFIG_BOARD_ATNGW100_MRMT)	+= mrmt.o

arch/avr32/boards/atngw100/mrmt.c

+/*
+ * Board-specific setup code for Remote Media Terminal 1 (RMT1)
+ * add-on board for the ATNGW100 Network Gateway
+ *
+ * Copyright (C) 2008 Mediama Technologies
+ * Based on ATNGW100 Network Gateway (Copyright (C) Atmel)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/linkage.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+#include <linux/fb.h>
+#include <linux/leds.h>
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
+#include <linux/atmel_serial.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/ads7846.h>
+
+#include <video/atmel_lcdc.h>
+#include <sound/atmel-ac97c.h>
+
+#include <asm/delay.h>
+#include <asm/io.h>
+#include <asm/setup.h>
+
+#include <mach/at32ap700x.h>
+#include <mach/board.h>
+#include <mach/init.h>
+#include <mach/portmux.h>
+
+/* Define board-specifoic GPIO assignments */
+#define PIN_LCD_BL	GPIO_PIN_PA(28)
+#define PWM_CH_BL	0	/* Must match with GPIO pin definition */
+#define PIN_LCD_DISP	GPIO_PIN_PA(31)
+#define	PIN_AC97_RST_N	GPIO_PIN_PA(30)
+#define PB_EXTINT_BASE	25
+#define TS_IRQ		0
+#define PIN_TS_EXTINT	GPIO_PIN_PB(PB_EXTINT_BASE+TS_IRQ)
+#define PIN_PB_LEFT	GPIO_PIN_PB(11)
+#define PIN_PB_RIGHT	GPIO_PIN_PB(12)
+#define PIN_PWR_SW_N	GPIO_PIN_PB(14)
+#define PIN_PWR_ON	GPIO_PIN_PB(13)
+#define PIN_ZB_RST_N	GPIO_PIN_PA(21)
+#define PIN_BT_RST	GPIO_PIN_PA(22)
+#define PIN_LED_SYS	GPIO_PIN_PA(16)
+#define PIN_LED_A	GPIO_PIN_PA(19)
+#define PIN_LED_B	GPIO_PIN_PE(19)
+
+#ifdef CONFIG_BOARD_MRMT_LCD_LQ043T3DX0X
+/* Sharp LQ043T3DX0x (or compatible) panel */
+static struct fb_videomode __initdata lcd_fb_modes[] = {
+	{
+		.name		= "480x272 @ 59.94Hz",
+		.refresh	= 59.94,
+		.xres		= 480,		.yres		= 272,
+		.pixclock	= KHZ2PICOS(9000),
+
+		.left_margin	= 2,		.right_margin	= 2,
+		.upper_margin	= 3,		.lower_margin	= 9,
+		.hsync_len	= 41,		.vsync_len	= 1,
+
+		.sync		= 0,
+		.vmode		= FB_VMODE_NONINTERLACED,
+	},
+};
+
+static struct fb_monspecs __initdata lcd_fb_default_monspecs = {
+	.manufacturer		= "SHA",
+	.monitor		= "LQ043T3DX02",
+	.modedb			= lcd_fb_modes,
+	.modedb_len		= ARRAY_SIZE(lcd_fb_modes),
+	.hfmin			= 14915,
+	.hfmax			= 17638,
+	.vfmin			= 53,
+	.vfmax			= 61,
+	.dclkmax		= 9260000,
+};
+
+static struct atmel_lcdfb_info __initdata rmt_lcdc_data = {
+	.default_bpp		= 24,
+	.default_dmacon		= ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
+	.default_lcdcon2	= (ATMEL_LCDC_DISTYPE_TFT
+				   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
+				   | ATMEL_LCDC_INVCLK_NORMAL
+				   | ATMEL_LCDC_MEMOR_BIG),
+	.lcd_wiring_mode	= ATMEL_LCDC_WIRING_RGB,
+	.default_monspecs	= &lcd_fb_default_monspecs,
+	.guard_time		= 2,
+};
+#endif
+
+#ifdef CONFIG_BOARD_MRMT_LCD_KWH043GM08
+/* Sharp KWH043GM08-Fxx (or compatible) panel */
+static struct fb_videomode __initdata lcd_fb_modes[] = {
+	{
+		.name		= "480x272 @ 59.94Hz",
+		.refresh	= 59.94,
+		.xres		= 480,		.yres		= 272,
+		.pixclock	= KHZ2PICOS(9000),
+
+		.left_margin	= 2,		.right_margin	= 2,
+		.upper_margin	= 3,		.lower_margin	= 9,
+		.hsync_len	= 41,		.vsync_len	= 1,
+
+		.sync		= 0,
+		.vmode		= FB_VMODE_NONINTERLACED,
+	},
+};
+
+static struct fb_monspecs __initdata lcd_fb_default_monspecs = {
+	.manufacturer		= "FOR",
+	.monitor		= "KWH043GM08",
+	.modedb			= lcd_fb_modes,
+	.modedb_len		= ARRAY_SIZE(lcd_fb_modes),
+	.hfmin			= 14915,
+	.hfmax			= 17638,
+	.vfmin			= 53,
+	.vfmax			= 61,
+	.dclkmax		= 9260000,
+};
+
+static struct atmel_lcdfb_info __initdata rmt_lcdc_data = {
+	.default_bpp		= 24,
+	.default_dmacon		= ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
+	.default_lcdcon2	= (ATMEL_LCDC_DISTYPE_TFT
+				   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
+				   | ATMEL_LCDC_INVCLK_INVERTED
+				   | ATMEL_LCDC_MEMOR_BIG),
+	.lcd_wiring_mode	= ATMEL_LCDC_WIRING_RGB,
+	.default_monspecs	= &lcd_fb_default_monspecs,
+	.guard_time		= 2,
+};
+#endif
+
+#ifdef CONFIG_BOARD_MRMT_AC97
+static struct ac97c_platform_data __initdata ac97c0_data = {
+	.reset_pin		= PIN_AC97_RST_N,
+};
+#endif
+
+#ifdef CONFIG_BOARD_MRMT_UCB1400_TS
+/* NOTE: IRQ assignment relies on kernel module parameter */
+static struct platform_device rmt_ts_device = {
+	.name	= "ucb1400_ts",
+	.id	= -1,
+	}
+};
+#endif
+
+#ifdef CONFIG_BOARD_MRMT_BL_PWM
+/* PWM LEDs: LCD Backlight, etc */
+static struct gpio_led rmt_pwm_led[] = {
+	/* here the "gpio" is actually a PWM channel */
+	{ .name = "backlight",	.gpio = PWM_CH_BL, },
+};
+
+static struct gpio_led_platform_data rmt_pwm_led_data = {
+	.num_leds	= ARRAY_SIZE(rmt_pwm_led),
+	.leds		= rmt_pwm_led,
+};
+
+static struct platform_device rmt_pwm_led_dev = {
+	.name		= "leds-atmel-pwm",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &rmt_pwm_led_data,
+	},
+};
+#endif
+
+#ifdef CONFIG_BOARD_MRMT_ADS7846_TS
+static int ads7846_pendown_state(void)
+{
+	return !gpio_get_value( PIN_TS_EXTINT );	/* PENIRQ.*/
+}
+
+static struct ads7846_platform_data ads_info = {
+	.model				= 7846,
+	.keep_vref_on			= 0,	/* Use external VREF pin */
+	.vref_delay_usecs		= 0,
+	.vref_mv			= 3300,	/* VREF = 3.3V */
+	.settle_delay_usecs		= 800,
+	.penirq_recheck_delay_usecs	= 800,
+	.x_plate_ohms			= 750,
+	.y_plate_ohms			= 300,
+	.pressure_max			= 4096,
+	.debounce_max			= 1,
+	.debounce_rep			= 0,
+	.debounce_tol			= (~0),
+	.get_pendown_state		= ads7846_pendown_state,
+	.filter				= NULL,
+	.filter_init			= NULL,
+};
+
+static struct spi_board_info spi01_board_info[] __initdata = {
+	{
+		.modalias	= "ads7846",
+		.max_speed_hz	= 31250*26,
+		.bus_num	= 0,
+		.chip_select	= 1,
+		.platform_data	= &ads_info,
+		.irq		= AT32_EXTINT(TS_IRQ),
+	},
+};
+#endif
+
+/* GPIO Keys: left, right, power, etc */
+static const struct gpio_keys_button rmt_gpio_keys_buttons[] = {
+	[0] = {
+		.type		= EV_KEY,
+		.code		= KEY_POWER,
+		.gpio		= PIN_PWR_SW_N,
+		.active_low	= 1,
+		.desc		= "power button",
+	},
+	[1] = {
+		.type		= EV_KEY,
+		.code		= KEY_LEFT,
+		.gpio		= PIN_PB_LEFT,
+		.active_low	= 1,
+		.desc		= "left button",
+	},
+	[2] = {
+		.type		= EV_KEY,
+		.code		= KEY_RIGHT,
+		.gpio		= PIN_PB_RIGHT,
+		.active_low	= 1,
+		.desc		= "right button",
+	},
+};
+
+static const struct gpio_keys_platform_data rmt_gpio_keys_data = {
+	.nbuttons =	ARRAY_SIZE(rmt_gpio_keys_buttons),
+	.buttons =	(void *) rmt_gpio_keys_buttons,
+};
+
+static struct platform_device rmt_gpio_keys = {
+	.name =		"gpio-keys",
+	.id =		-1,
+	.dev = {
+		.platform_data = (void *) &rmt_gpio_keys_data,
+	}
+};
+
+#ifdef CONFIG_BOARD_MRMT_RTC_I2C
+static struct i2c_board_info __initdata mrmt1_i2c_rtc = {
+	I2C_BOARD_INFO("s35390a", 0x30),
+	.irq		= 0,
+};
+#endif
+
+static void mrmt_power_off(void)
+{
+	/* PWR_ON=0 will force power off */
+	gpio_set_value( PIN_PWR_ON, 0 );
+}
+
+static int __init mrmt1_init(void)
+{
+	gpio_set_value( PIN_PWR_ON, 1 );	/* Ensure PWR_ON is enabled */
+
+	pm_power_off = mrmt_power_off;
+
+	/* Setup USARTS (other than console) */
+	at32_map_usart(2, 1, 0);	/* USART 2: /dev/ttyS1, RMT1:DB9M */
+	at32_map_usart(3, 2, ATMEL_USART_RTS | ATMEL_USART_CTS);
+			/* USART 3: /dev/ttyS2, RMT1:Wireless, w/ RTS/CTS */
+	at32_add_device_usart(1);
+	at32_add_device_usart(2);
+
+	/* Select GPIO Key pins */
+	at32_select_gpio( PIN_PWR_SW_N, AT32_GPIOF_DEGLITCH);
+	at32_select_gpio( PIN_PB_LEFT, AT32_GPIOF_DEGLITCH);
+	at32_select_gpio( PIN_PB_RIGHT, AT32_GPIOF_DEGLITCH);
+	platform_device_register(&rmt_gpio_keys);
+
+#ifdef CONFIG_BOARD_MRMT_RTC_I2C
+	i2c_register_board_info(0, &mrmt1_i2c_rtc, 1);
+#endif
+
+#ifndef CONFIG_BOARD_MRMT_LCD_DISABLE
+	/* User "alternate" LCDC inferface on Port E & D */
+	/* NB: exclude LCDC_CC pin, as NGW100 reserves it for other use */
+	at32_add_device_lcdc(0, &rmt_lcdc_data,
+		fbmem_start, fbmem_size,
+		(ATMEL_LCDC_ALT_24BIT | ATMEL_LCDC_PE_DVAL ) );
+#endif
+
+#ifdef CONFIG_BOARD_MRMT_AC97
+	at32_add_device_ac97c(0, &ac97c0_data, AC97C_BOTH);
+#endif
+
+#ifdef CONFIG_BOARD_MRMT_ADS7846_TS
+	/* Select the Touchscreen interrupt pin mode */
+	at32_select_periph( GPIO_PIOB_BASE, 1 << (PB_EXTINT_BASE+TS_IRQ),
+			GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
+	set_irq_type( AT32_EXTINT(TS_IRQ), IRQ_TYPE_EDGE_FALLING );
+	spi_register_board_info(spi01_board_info,ARRAY_SIZE(spi01_board_info));
+#endif
+
+#ifdef CONFIG_BOARD_MRMT_UCB1400_TS
+	/* Select the Touchscreen interrupt pin mode */
+	at32_select_periph( GPIO_PIOB_BASE, 1 << (PB_EXTINT_BASE+TS_IRQ),
+			GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
+	platform_device_register(&rmt_ts_device);
+#endif
+
+	at32_select_gpio( PIN_LCD_DISP, AT32_GPIOF_OUTPUT );
+	gpio_request( PIN_LCD_DISP, "LCD_DISP" );
+	gpio_direction_output( PIN_LCD_DISP, 0 );	/* LCD DISP */
+#ifdef CONFIG_BOARD_MRMT_LCD_DISABLE
+	/* Keep Backlight and DISP off */
+	at32_select_gpio( PIN_LCD_BL, AT32_GPIOF_OUTPUT );
+	gpio_request( PIN_LCD_BL, "LCD_BL" );
+	gpio_direction_output( PIN_LCD_BL, 0 );		/* Backlight */
+#else
+	gpio_set_value( PIN_LCD_DISP, 1 );	/* DISP asserted first */
+#ifdef CONFIG_BOARD_MRMT_BL_PWM
+	/* Use PWM for Backlight controls */
+	at32_add_device_pwm(1 << PWM_CH_BL);
+	platform_device_register(&rmt_pwm_led_dev);
+#else
+	/* Backlight always on */
+	udelay( 1 );
+	at32_select_gpio( PIN_LCD_BL, AT32_GPIOF_OUTPUT );
+	gpio_request( PIN_LCD_BL, "LCD_BL" );
+	gpio_direction_output( PIN_LCD_BL, 1 );
+#endif
+#endif
+
+	/* Make sure BT and Zigbee modules in reset */
+	at32_select_gpio( PIN_BT_RST, AT32_GPIOF_OUTPUT );
+	gpio_request( PIN_BT_RST, "BT_RST" );
+	gpio_direction_output( PIN_BT_RST, 1 );
+	/* BT Module in Reset */
+
+	at32_select_gpio( PIN_ZB_RST_N, AT32_GPIOF_OUTPUT );
+	gpio_request( PIN_ZB_RST_N, "ZB_RST_N" );
+	gpio_direction_output( PIN_ZB_RST_N, 0 );
+	/* XBee Module in Reset */
+
+#ifdef CONFIG_BOARD_MRMT_WIRELESS_ZB
+	udelay( 1000 );
+	/* Unreset the XBee Module */
+	gpio_set_value( PIN_ZB_RST_N, 1 );
+#endif
+#ifdef CONFIG_BOARD_MRMT_WIRELESS_BT
+	udelay( 1000 );
+	/* Unreset the BT Module */
+	gpio_set_value( PIN_BT_RST, 0 );
+#endif
+
+	return 0;
+}
+arch_initcall(mrmt1_init);
+
+static int __init mrmt1_early_init(void)
+{
+	/* To maintain power-on signal in case boot loader did not already */
+	at32_select_gpio( PIN_PWR_ON, AT32_GPIOF_OUTPUT );
+	gpio_request( PIN_PWR_ON, "PIN_PWR_ON" );
+	gpio_direction_output( PIN_PWR_ON, 1 );
+
+	return 0;
+}
+core_initcall(mrmt1_early_init);

arch/avr32/boards/atngw100/setup.c

@@ -56,8 +56,13 @@ static struct spi_board_info spi0_board_info[] __initdata = {
 static struct mci_platform_data __initdata mci0_data = {
 	.slot[0] = {
 		.bus_width	= 4,
+#if defined(CONFIG_BOARD_ATNGW100_EVKLCD10X) || defined(CONFIG_BOARD_ATNGW100_MRMT1)
+		.detect_pin     = GPIO_PIN_NONE,
+		.wp_pin         = GPIO_PIN_NONE,
+#else
 		.detect_pin	= GPIO_PIN_PC(25),
 		.wp_pin		= GPIO_PIN_PE(0),
+#endif
 	},
 };
 

arch/avr32/boards/merisc/setup.c

@@ -94,9 +94,10 @@ static struct spi_board_info __initdata spi0_board_info[] = {
 
 static struct mci_platform_data __initdata mci0_data = {
 	.slot[0] = {
-		.bus_width	= 4,
-		.detect_pin	= GPIO_PIN_PE(19),
-		.wp_pin		= GPIO_PIN_PE(20),
+		.bus_width		= 4,
+		.detect_pin		= GPIO_PIN_PE(19),
+		.wp_pin			= GPIO_PIN_PE(20),
+		.detect_is_active_high	= true,
 	},
 };
 

arch/avr32/include/asm/hw_irq.h

 #ifndef __ASM_AVR32_HW_IRQ_H
 #define __ASM_AVR32_HW_IRQ_H
 
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i)
+static inline void hw_resend_irq(struct irq_chip *h, unsigned int i)
 {
 	/* Nothing to do */
 }

drivers/mmc/host/atmel-mci.c

@@ -177,6 +177,7 @@ struct atmel_mci {
  *	available.
  * @wp_pin: GPIO pin used for card write protect sending, or negative
  *	if not available.
+ * @detect_is_active_high: The state of the detect pin when it is active.
  * @detect_timer: Timer used for debouncing @detect_pin interrupts.
  */
 struct atmel_mci_slot {
@@ -196,6 +197,7 @@ struct atmel_mci_slot {
 
 	int			detect_pin;
 	int			wp_pin;
+	bool			detect_is_active_high;
 
 	struct timer_list	detect_timer;
 };
@@ -924,7 +926,8 @@ static int atmci_get_cd(struct mmc_host *mmc)
 	struct atmel_mci_slot	*slot = mmc_priv(mmc);
 
 	if (gpio_is_valid(slot->detect_pin)) {
-		present = !gpio_get_value(slot->detect_pin);
+		present = !(gpio_get_value(slot->detect_pin) ^
+			    slot->detect_is_active_high);
 		dev_dbg(&mmc->class_dev, "card is %spresent\n",
 				present ? "" : "not ");
 	}
@@ -1028,7 +1031,8 @@ static void atmci_detect_change(unsigned long data)
 		return;
 
 	enable_irq(gpio_to_irq(slot->detect_pin));
-	present = !gpio_get_value(slot->detect_pin);
+	present = !(gpio_get_value(slot->detect_pin) ^
+		    slot->detect_is_active_high);
 	present_old = test_bit(ATMCI_CARD_PRESENT, &slot->flags);
 
 	dev_vdbg(&slot->mmc->class_dev, "detect change: %d (was %d)\n",
@@ -1456,6 +1460,7 @@ static int __init atmci_init_slot(struct atmel_mci *host,
 	slot->host = host;
 	slot->detect_pin = slot_data->detect_pin;
 	slot->wp_pin = slot_data->wp_pin;
+	slot->detect_is_active_high = slot_data->detect_is_active_high;
 	slot->sdc_reg = sdc_reg;
 
 	mmc->ops = &atmci_ops;
@@ -1477,7 +1482,8 @@ static int __init atmci_init_slot(struct atmel_mci *host,
 		if (gpio_request(slot->detect_pin, "mmc_detect")) {
 			dev_dbg(&mmc->class_dev, "no detect pin available\n");
 			slot->detect_pin = -EBUSY;
-		} else if (gpio_get_value(slot->detect_pin)) {
+		} else if (gpio_get_value(slot->detect_pin) ^
+				slot->detect_is_active_high) {
 			clear_bit(ATMCI_CARD_PRESENT, &slot->flags);
 		}
 	}

include/linux/atmel-mci.h

@@ -10,6 +10,7 @@
  * @bus_width: Number of data lines wired up the slot
  * @detect_pin: GPIO pin wired to the card detect switch
  * @wp_pin: GPIO pin wired to the write protect sensor
+ * @detect_is_active_high: The state of the detect pin when it is active
  *
  * If a given slot is not present on the board, @bus_width should be
  * set to 0. The other fields are ignored in this case.
@@ -24,6 +25,7 @@ struct mci_slot_pdata {
 	unsigned int		bus_width;
 	int			detect_pin;
 	int			wp_pin;
+	bool			detect_is_active_high;
 };
 
 /**