[ARM] 4867/1: Adds flash, udc, mci support for gumstix F boards

This patch implements support for Gumstix-F flash, udc and mci. Fixes since the last time are:
- Steve Sakoman as maintainer
- cleanup for udc and mci setup
Signed-off-by: NJaya Kumar <jayakumar.lkml@gmail.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

MAINTAINERS

@@ -480,6 +480,12 @@ M:	kernel@wantstofly.org
 L:	linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
 S:	Maintained
 
+ARM/GUMSTIX MACHINE SUPPORT
+P:	Steve Sakoman
+M:	sakoman@gmail.com
+L:	linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
+S:	Maintained
+
 ARM/HP JORNADA 7XX MACHINE SUPPORT
 P:      Kristoffer Ericson
 M:      kristoffer.ericson@gmail.com

arch/arm/mach-pxa/Kconfig

@@ -23,6 +23,12 @@ endif
 choice
 	prompt "Select target board"
 
+config ARCH_GUMSTIX
+	bool "Gumstix XScale boards"
+	help
+	  Say Y here if you intend to run this kernel on a
+	  Gumstix Full Function Minature Computer.
+
 config ARCH_LUBBOCK
 	bool "Intel DBPXA250 Development Platform"
 	select PXA25x
@@ -160,6 +166,20 @@ endchoice
 
 endif
 
+if ARCH_GUMSTIX
+
+choice
+	prompt "Select target Gumstix board"
+
+config MACH_GUMSTIX_F
+	bool "Basix, Connex, ws-200ax, ws-400ax systems"
+	select PXA25x
+
+endchoice
+
+endif
+
+
 if MACH_TRIZEPS4
 
 choice

arch/arm/mach-pxa/Makefile

@@ -12,6 +12,7 @@ obj-$(CONFIG_CPU_PXA300)	+= pxa300.o
 obj-$(CONFIG_CPU_PXA320)	+= pxa320.o
 
 # Specific board support
+obj-$(CONFIG_ARCH_GUMSTIX)	+= gumstix.o
 obj-$(CONFIG_ARCH_LUBBOCK)	+= lubbock.o
 obj-$(CONFIG_MACH_LOGICPD_PXA270) += lpd270.o
 obj-$(CONFIG_MACH_MAINSTONE)	+= mainstone.o

arch/arm/mach-pxa/gumstix.c

+/*
+ *  linux/arch/arm/mach-pxa/gumstix.c
+ *
+ *  Support for the Gumstix motherboards.
+ *
+ *  Original Author:	Craig Hughes
+ *  Created:	Feb 14, 2008
+ *  Copyright:	Craig Hughes
+ *
+ *  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.
+ *
+ *  Implemented based on lubbock.c by Nicolas Pitre and code from Craig
+ *  Hughes
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/sizes.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/flash.h>
+#include <asm/arch/mmc.h>
+#include <asm/arch/udc.h>
+#include <asm/arch/gumstix.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
+
+#include "generic.h"
+
+static struct resource flash_resource = {
+	.start	= 0x00000000,
+	.end	= SZ_64M - 1,
+	.flags	= IORESOURCE_MEM,
+};
+
+static struct mtd_partition gumstix_partitions[] = {
+	{
+		.name =		"Bootloader",
+		.size =		0x00040000,
+		.offset =	0,
+		.mask_flags =	MTD_WRITEABLE  /* force read-only */
+	} , {
+		.name =		"rootfs",
+		.size =		MTDPART_SIZ_FULL,
+		.offset =	MTDPART_OFS_APPEND
+	}
+};
+
+static struct flash_platform_data gumstix_flash_data = {
+	.map_name	= "cfi_probe",
+	.parts		= gumstix_partitions,
+	.nr_parts	= ARRAY_SIZE(gumstix_partitions),
+	.width		= 2,
+};
+
+static struct platform_device gumstix_flash_device = {
+	.name		= "pxa2xx-flash",
+	.id		= 0,
+	.dev = {
+		.platform_data = &gumstix_flash_data,
+	},
+	.resource = &flash_resource,
+	.num_resources = 1,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&gumstix_flash_device,
+};
+
+#ifdef CONFIG_MMC_PXA
+static struct pxamci_platform_data gumstix_mci_platform_data;
+
+static int gumstix_mci_init(struct device *dev, irq_handler_t detect_int,
+				void *data)
+{
+	pxa_gpio_mode(GPIO6_MMCCLK_MD);
+	pxa_gpio_mode(GPIO53_MMCCLK_MD);
+	pxa_gpio_mode(GPIO8_MMCCS0_MD);
+
+	return 0;
+}
+
+static struct pxamci_platform_data gumstix_mci_platform_data = {
+	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
+	.init		= gumstix_mci_init,
+};
+
+static void __init gumstix_mmc_init(void)
+{
+	pxa_set_mci_info(&gumstix_mci_platform_data);
+}
+#else
+static void __init gumstix_mmc_init(void)
+{
+	printk(KERN_INFO "Gumstix mmc disabled\n");
+}
+#endif
+
+#ifdef CONFIG_USB_GADGET_PXA2XX
+static struct pxa2xx_udc_mach_info gumstix_udc_info __initdata = {
+	.gpio_vbus		= GPIO_GUMSTIX_USB_GPIOn,
+	.gpio_pullup		= GPIO_GUMSTIX_USB_GPIOx,
+};
+
+static void __init gumstix_udc_init(void)
+{
+	pxa_set_udc_info(&gumstix_udc_info);
+}
+#else
+static void gumstix_udc_init(void)
+{
+	printk(KERN_INFO "Gumstix udc is disabled\n");
+}
+#endif
+
+static void __init gumstix_init(void)
+{
+	gumstix_udc_init();
+	gumstix_mmc_init();
+	(void) platform_add_devices(devices, ARRAY_SIZE(devices));
+}
+
+MACHINE_START(GUMSTIX, "Gumstix")
+	.phys_io	= 0x40000000,
+	.boot_params	= 0xa0000100, /* match u-boot bi_boot_params */
+	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
+	.map_io		= pxa_map_io,
+	.init_irq	= pxa25x_init_irq,
+	.timer		= &pxa_timer,
+	.init_machine	= gumstix_init,
+MACHINE_END

include/asm-arm/arch-pxa/gumstix.h

+/*
+ *  linux/include/asm-arm/arch-pxa/gumstix.h
+ *
+ * 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.
+ */
+
+
+/* BTRESET - Reset line to Bluetooth module, active low signal. */
+#define GPIO_GUMSTIX_BTRESET          7
+#define GPIO_GUMSTIX_BTRESET_MD		(GPIO_GUMSTIX_BTRESET | GPIO_OUT)
+
+
+/*
+GPIOn - Input from MAX823 (or equiv), normalizing USB +5V into a clean
+interrupt signal for determining cable presence. On the original gumstix,
+this is GPIO81, and GPIO83 needs to be defined as well. On the gumstix F,
+this moves to GPIO17 and GPIO37. */
+
+/* GPIOx - Connects to USB D+ and used as a pull-up after GPIOn
+has detected a cable insertion; driven low otherwise. */
+
+#ifdef CONFIG_ARCH_GUMSTIX_ORIG
+
+#define GPIO_GUMSTIX_USB_GPIOn		81
+#define GPIO_GUMSTIX_USB_GPIOx		83
+
+#else
+
+#define GPIO_GUMSTIX_USB_GPIOn		35
+#define GPIO_GUMSTIX_USB_GPIOx		41
+
+#endif
+
+/* usb state change */
+#define GUMSTIX_USB_INTR_IRQ		IRQ_GPIO(GPIO_GUMSTIX_USB_GPIOn)
+
+#define GPIO_GUMSTIX_USB_GPIOn_MD	(GPIO_GUMSTIX_USB_GPIOn | GPIO_IN)
+#define GPIO_GUMSTIX_USB_GPIOx_CON_MD	(GPIO_GUMSTIX_USB_GPIOx | GPIO_OUT)
+#define GPIO_GUMSTIX_USB_GPIOx_DIS_MD	(GPIO_GUMSTIX_USB_GPIOx | GPIO_IN)
+
+/*
+ * SD/MMC definitions
+ */
+#define GUMSTIX_GPIO_nSD_WP		22 /* SD Write Protect */
+#define GUMSTIX_GPIO_nSD_DETECT		11 /* MMC/SD Card Detect */
+#define GUMSTIX_IRQ_GPIO_nSD_DETECT	IRQ_GPIO(GUMSTIX_GPIO_nSD_DETECT)
+
+/*
+ * SMC Ethernet definitions
+ * ETH_RST provides a hardware reset line to the ethernet chip
+ * ETH is the IRQ line in from the ethernet chip to the PXA
+ */
+#define GPIO_GUMSTIX_ETH0_RST		80
+#define GPIO_GUMSTIX_ETH0_RST_MD	(GPIO_GUMSTIX_ETH0_RST | GPIO_OUT)
+#define GPIO_GUMSTIX_ETH1_RST		52
+#define GPIO_GUMSTIX_ETH1_RST_MD	(GPIO_GUMSTIX_ETH1_RST | GPIO_OUT)
+
+#define GPIO_GUMSTIX_ETH0		36
+#define GPIO_GUMSTIX_ETH0_MD		(GPIO_GUMSTIX_ETH0 | GPIO_IN)
+#define GUMSTIX_ETH0_IRQ		IRQ_GPIO(GPIO_GUMSTIX_ETH0)
+#define GPIO_GUMSTIX_ETH1		27
+#define GPIO_GUMSTIX_ETH1_MD		(GPIO_GUMSTIX_ETH1 | GPIO_IN)
+#define GUMSTIX_ETH1_IRQ		IRQ_GPIO(GPIO_GUMSTIX_ETH1)
+
+
+/* CF reset line */
+#define GPIO8_RESET			8
+
+/* CF slot 0 */
+#define GPIO4_nBVD1			4
+#define GPIO4_nSTSCHG			GPIO4_nBVD1
+#define GPIO11_nCD			11
+#define GPIO26_PRDY_nBSY		26
+#define GUMSTIX_S0_nSTSCHG_IRQ		IRQ_GPIO(GPIO4_nSTSCHG)
+#define GUMSTIX_S0_nCD_IRQ		IRQ_GPIO(GPIO11_nCD)
+#define GUMSTIX_S0_PRDY_nBSY_IRQ	IRQ_GPIO(GPIO26_PRDY_nBSY)
+
+/* CF slot 1 */
+#define GPIO18_nBVD1			18
+#define GPIO18_nSTSCHG			GPIO18_nBVD1
+#define GPIO36_nCD			36
+#define GPIO27_PRDY_nBSY		27
+#define GUMSTIX_S1_nSTSCHG_IRQ		IRQ_GPIO(GPIO18_nSTSCHG)
+#define GUMSTIX_S1_nCD_IRQ		IRQ_GPIO(GPIO36_nCD)
+#define GUMSTIX_S1_PRDY_nBSY_IRQ	IRQ_GPIO(GPIO27_PRDY_nBSY)
+
+/* CF GPIO line modes */
+#define GPIO4_nSTSCHG_MD		(GPIO4_nSTSCHG | GPIO_IN)
+#define GPIO8_RESET_MD			(GPIO8_RESET | GPIO_OUT)
+#define GPIO11_nCD_MD			(GPIO11_nCD | GPIO_IN)
+#define GPIO18_nSTSCHG_MD		(GPIO18_nSTSCHG | GPIO_IN)
+#define GPIO26_PRDY_nBSY_MD		(GPIO26_PRDY_nBSY | GPIO_IN)
+#define GPIO27_PRDY_nBSY_MD		(GPIO27_PRDY_nBSY | GPIO_IN)
+#define GPIO36_nCD_MD			(GPIO36_nCD | GPIO_IN)