[ARM PATCH] 1867/1: support for the Intel Mainstone (PXA27x based) eval board

Patch from Nicolas Pitre

arch/arm/Kconfig

@@ -85,7 +85,7 @@ config ARCH_CO285
 	bool "Co-EBSA285"
 
 config ARCH_PXA
-	bool "PXA250/210-based"
+	bool "PXA2xx-based"
 
 config ARCH_EBSA110
 	bool "EBSA-110"

arch/arm/mach-pxa/Kconfig

@@ -6,6 +6,12 @@ config ARCH_LUBBOCK
 	depends on ARCH_PXA
 	select PXA25x
 
+config MACH_MAINSTONE
+	bool "Intel HCDDBBVA0 Development Platform"
+	depends on ARCH_PXA
+	select PXA27x
+	select IWMMXT
+
 config ARCH_PXA_IDP
 	bool "Accelent Xscale IDP"
 	depends on ARCH_PXA

arch/arm/mach-pxa/Makefile

@@ -9,6 +9,7 @@ obj-$(CONFIG_PXA27x) += pxa27x.o
 
 # Specific board support
 obj-$(CONFIG_ARCH_LUBBOCK) += lubbock.o
+obj-$(CONFIG_MACH_MAINSTONE) += mainstone.o
 obj-$(CONFIG_ARCH_PXA_IDP) += idp.o
 
 # Support for blinky lights

arch/arm/mach-pxa/mainstone.c

+/*
+ *  linux/arch/arm/mach-pxa/mainstone.c
+ *
+ *  Support for the Intel HCDDBBVA0 Development Platform.
+ *  (go figure how they came up with such name...)
+ *
+ *  Author:	Nicolas Pitre
+ *  Created:	Nov 05, 2002
+ *  Copyright:	MontaVista Software Inc.
+ *
+ *  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/init.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/bitops.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include "generic.h"
+
+
+static unsigned long mainstone_irq_enabled;
+
+static void mainstone_mask_irq(unsigned int irq)
+{
+	int mainstone_irq = (irq - MAINSTONE_IRQ(0));
+	MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
+}
+
+static void mainstone_unmask_irq(unsigned int irq)
+{
+	int mainstone_irq = (irq - MAINSTONE_IRQ(0));
+	/* the irq can be acknowledged only if deasserted, so it's done here */
+	MST_INTSETCLR &= ~(1 << mainstone_irq);
+	MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
+}
+
+static struct irqchip mainstone_irq_chip = {
+	.ack		= mainstone_mask_irq,
+	.mask		= mainstone_mask_irq,
+	.unmask		= mainstone_unmask_irq,
+};
+
+
+static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
+				  struct pt_regs *regs)
+{
+	unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
+	do {
+		GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
+		if (likely(pending)) {
+			irq = MAINSTONE_IRQ(0) + __ffs(pending);
+			desc = irq_desc + irq;
+			desc->handle(irq, desc, regs);
+		}
+		pending = MST_INTSETCLR & mainstone_irq_enabled;
+	} while (pending);
+}
+
+static void __init mainstone_init_irq(void)
+{
+	int irq;
+
+	pxa_init_irq();
+
+	/* setup extra Mainstone irqs */
+	for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
+		set_irq_chip(irq, &mainstone_irq_chip);
+		set_irq_handler(irq, do_level_IRQ);
+		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+	}
+	set_irq_flags(MAINSTONE_IRQ(8), 0);
+	set_irq_flags(MAINSTONE_IRQ(12), 0);
+
+	MST_INTMSKENA = 0;
+	MST_INTSETCLR = 0;
+
+	set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
+	set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
+}
+
+
+static struct resource smc91x_resources[] = {
+	[0] = {
+		.start	= (MST_ETH_PHYS + 0x300),
+		.end	= (MST_ETH_PHYS + 0xfffff),
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= MAINSTONE_IRQ(3),
+		.end	= MAINSTONE_IRQ(3),
+		.flags	= IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device smc91x_device = {
+	.name		= "smc91x",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(smc91x_resources),
+	.resource	= smc91x_resources,
+};
+
+static void __init mainstone_init(void)
+{
+	platform_add_device(&smc91x_device);
+}
+
+
+static struct map_desc mainstone_io_desc[] __initdata = {
+  { MST_FPGA_VIRT, MST_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
+};
+
+static void __init mainstone_map_io(void)
+{
+	pxa_map_io();
+	iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
+}
+
+MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
+	MAINTAINER("MontaVista Software Inc.")
+	BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
+	MAPIO(mainstone_map_io)
+	INITIRQ(mainstone_init_irq)
+	INIT_MACHINE(mainstone_init)
+MACHINE_END

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

@@ -98,6 +98,7 @@ extern unsigned int get_lclk_frequency_10khz(void);
  */
 
 #include "lubbock.h"
+#include "mainstone.h"
 #include "idp.h"
 
 #endif  /* _ASM_ARCH_HARDWARE_H */

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

@@ -118,7 +118,8 @@
  */
 #ifdef CONFIG_SA1111
 #define NR_IRQS			(IRQ_S1_BVD1_STSCHG + 1)
-#elif defined(CONFIG_ARCH_LUBBOCK)
+#elif defined(CONFIG_ARCH_LUBBOCK) || \
+      defined(CONFIG_MACH_MAINSTONE)
 #define NR_IRQS			(IRQ_BOARD_END)
 #else
 #define NR_IRQS			(IRQ_BOARD_START)
@@ -138,3 +139,19 @@
 #define LUBBOCK_USB_DISC_IRQ	LUBBOCK_IRQ(6)  /* usb disconnect */
 #define LUBBOCK_LAST_IRQ	LUBBOCK_IRQ(6)
 
+#define MAINSTONE_IRQ(x)	(IRQ_BOARD_START + (x))
+#define MAINSTONE_MMC_IRQ	MAINSTONE_IRQ(0)
+#define MAINSTONE_USIM_IRQ	MAINSTONE_IRQ(1)
+#define MAINSTONE_USBC_IRQ	MAINSTONE_IRQ(2)
+#define MAINSTONE_ETHERNET_IRQ	MAINSTONE_IRQ(3)
+#define MAINSTONE_AC97_IRQ	MAINSTONE_IRQ(4)
+#define MAINSTONE_PEN_IRQ	MAINSTONE_IRQ(5)
+#define MAINSTONE_MSINS_IRQ	MAINSTONE_IRQ(6)
+#define MAINSTONE_EXBRD_IRQ	MAINSTONE_IRQ(7)
+#define MAINSTONE_S0_CD_IRQ	MAINSTONE_IRQ(9)
+#define MAINSTONE_S0_STSCHG_IRQ	MAINSTONE_IRQ(10)
+#define MAINSTONE_S0_IRQ	MAINSTONE_IRQ(11)
+#define MAINSTONE_S1_CD_IRQ	MAINSTONE_IRQ(13)
+#define MAINSTONE_S1_STSCHG_IRQ	MAINSTONE_IRQ(14)
+#define MAINSTONE_S1_IRQ	MAINSTONE_IRQ(15)
+

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

+/*
+ *  linux/include/asm-arm/arch-pxa/mainstone.h
+ *
+ *  Author:	Nicolas Pitre
+ *  Created:	Nov 14, 2002
+ *  Copyright:	MontaVista Software Inc.
+ *
+ * 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.
+ */
+
+#ifndef ASM_ARCH_MAINSTONE_H
+#define ASM_ARCH_MAINSTONE_H
+
+#define MST_ETH_PHYS		PXA_CS4_PHYS
+
+#define MST_FPGA_PHYS		PXA_CS2_PHYS
+#define MST_FPGA_VIRT		(0xf0000000)
+#define MST_P2V(x)		((x) - MST_FPGA_PHYS + MST_FPGA_VIRT)
+#define MST_V2P(x)		((x) - MST_FPGA_VIRT + MST_FPGA_PHYS)
+
+#ifndef __ASSEMBLY__
+# define __MST_REG(x)		(*((volatile unsigned long *)MST_P2V(x)))
+#else
+# define __MST_REG(x)		MST_P2V(x)
+#endif
+
+/* board level registers in the FPGA */
+
+#define MST_LEDDAT1		__MST_REG(0x08000010)
+#define MST_LEDDAT2		__MST_REG(0x08000014)
+#define MST_LEDCTRL		__MST_REG(0x08000040)
+#define MST_GPSWR		__MST_REG(0x08000060)
+#define MST_MSCWR1		__MST_REG(0x08000080)
+#define MST_MSCWR2		__MST_REG(0x08000084)
+#define MST_MSCWR3		__MST_REG(0x08000088)
+#define MST_MSCRD		__MST_REG(0x08000090)
+#define MST_INTMSKENA		__MST_REG(0x080000c0)
+#define MST_INTSETCLR		__MST_REG(0x080000d0)
+#define MST_PCMCIA0		__MST_REG(0x080000e0)
+#define MST_PCMCIA1		__MST_REG(0x080000e4)
+
+#define MST_MSCWR1_CAMERA_ON	(1 << 15)  /* Camera interface power control */
+#define MST_MSCWR1_CAMERA_SEL	(1 << 14)  /* Camera interface mux control */
+#define MST_MSCWR1_LCD_CTL	(1 << 13)  /* General-purpose LCD control */
+#define MST_MSCWR1_MS_ON	(1 << 12)  /* Memory Stick power control */
+#define MST_MSCWR1_MMC_ON	(1 << 11)  /* MultiMediaCard* power control */
+#define MST_MSCWR1_MS_SEL	(1 << 10)  /* SD/MS multiplexer control */
+#define MST_MSCWR1_BB_SEL	(1 << 9)   /* PCMCIA/Baseband multiplexer */
+#define MST_MSCWR1_BT_ON	(1 << 8)   /* Bluetooth UART transceiver */
+#define MST_MSCWR1_BTDTR	(1 << 7)   /* Bluetooth UART DTR */
+
+#define MST_MSCWR1_IRDA_MASK	(3 << 5)   /* IrDA transceiver mode */
+#define MST_MSCWR1_IRDA_FULL	(0 << 5)   /* full distance power */
+#define MST_MSCWR1_IRDA_OFF	(1 << 5)   /* shutdown */
+#define MST_MSCWR1_IRDA_MED	(2 << 5)   /* 2/3 distance power */
+#define MST_MSCWR1_IRDA_LOW	(3 << 5)   /* 1/3 distance power */
+
+#define MST_MSCWR1_IRDA_FIR	(1 << 4)   /* IrDA transceiver SIR/FIR */
+#define MST_MSCWR1_GREENLED	(1 << 3)   /* LED D1 control */
+#define MST_MSCWR1_PDC_CTL	(1 << 2)   /* reserved */
+#define MST_MSCWR1_MTR_ON	(1 << 1)   /* Silent alert motor */
+#define MST_MSCWR1_SYSRESET	(1 << 0)   /* System reset */
+
+#define MST_MSCWR2_USB_OTG_RST	(1 << 6)   /* USB On The Go reset */
+#define MST_MSCWR2_USB_OTG_SEL	(1 << 5)   /* USB On The Go control */
+#define MST_MSCWR2_nUSBC_SC	(1 << 4)   /* USB client soft connect control */
+#define MST_MSCWR2_I2S_SPKROFF	(1 << 3)   /* I2S CODEC amplifier control */
+#define MST_MSCWR2_AC97_SPKROFF	(1 << 2)   /* AC97 CODEC amplifier control */
+#define MST_MSCWR2_RADIO_PWR	(1 << 1)   /* Radio module power control */
+#define MST_MSCWR2_RADIO_WAKE	(1 << 0)   /* Radio module wake-up signal */
+
+#define MST_MSCWR3_GPIO_RESET_EN	(1 << 2) /* Enable GPIO Reset */
+#define MST_MSCWR3_GPIO_RESET		(1 << 1) /* Initiate a GPIO Reset */
+#define MST_MSCWR3_COMMS_SW_RESET	(1 << 0) /* Communications Processor Reset Control */
+
+#define MST_MSCRD_nPENIRQ	(1 << 9)   /* ADI7873* nPENIRQ signal */
+#define MST_MSCRD_nMEMSTK_CD	(1 << 8)   /* Memory Stick detection signal */
+#define MST_MSCRD_nMMC_CD	(1 << 7)   /* SD/MMC card detection signal */
+#define MST_MSCRD_nUSIM_CD	(1 << 6)   /* USIM card detection signal */
+#define MST_MSCRD_USB_CBL	(1 << 5)   /* USB client cable status */
+#define MST_MSCRD_TS_BUSY	(1 << 4)   /* ADI7873 busy */
+#define MST_MSCRD_BTDSR		(1 << 3)   /* Bluetooth UART DSR */
+#define MST_MSCRD_BTRI		(1 << 2)   /* Bluetooth UART Ring Indicator */
+#define MST_MSCRD_BTDCD		(1 << 1)   /* Bluetooth UART DCD */
+#define MST_MSCRD_nMMC_WP	(1 << 0)   /* SD/MMC write-protect status */
+
+#define MST_INT_S1_IRQ		(1 << 15)  /* PCMCIA socket 1 IRQ */
+#define MST_INT_S1_STSCHG	(1 << 14)  /* PCMCIA socket 1 status changed */
+#define MST_INT_S1_CD		(1 << 13)  /* PCMCIA socket 1 card detection */
+#define MST_INT_S0_IRQ		(1 << 11)  /* PCMCIA socket 0 IRQ */
+#define MST_INT_S0_STSCHG	(1 << 10)  /* PCMCIA socket 0 status changed */
+#define MST_INT_S0_CD		(1 << 9)   /* PCMCIA socket 0 card detection */
+#define MST_INT_nEXBRD_INT	(1 << 7)   /* Expansion board IRQ */
+#define MST_INT_MSINS		(1 << 6)   /* Memory Stick* detection */
+#define MST_INT_PENIRQ		(1 << 5)   /* ADI7873* touch-screen IRQ */
+#define MST_INT_AC97		(1 << 4)   /* AC'97 CODEC IRQ */
+#define MST_INT_ETHERNET	(1 << 3)   /* Ethernet controller IRQ */
+#define MST_INT_USBC		(1 << 2)   /* USB client cable detection IRQ */
+#define MST_INT_USIM		(1 << 1)   /* USIM card detection IRQ */
+#define MST_INT_MMC		(1 << 0)   /* MMC/SD card detection IRQ */
+
+#define MST_PCMCIA_nIRQ		(1 << 10)  /* IRQ / ready signal */
+#define MST_PCMCIA_nSPKR_BVD2	(1 << 9)   /* VDD sense / digital speaker */
+#define MST_PCMCIA_nSTSCHG_BVD1	(1 << 8)   /* VDD sense / card status changed */
+#define MST_PCMCIA_nVS2		(1 << 7)   /* VSS voltage sense */
+#define MST_PCMCIA_nVS1		(1 << 6)   /* VSS voltage sense */
+#define MST_PCMCIA_nCD		(1 << 5)   /* Card detection signal */
+#define MST_PCMCIA_RESET	(1 << 4)   /* Card reset signal */
+#define MST_PCMCIA_PWR_MASK	(0x000f)   /* MAX1602 power-supply controls */
+
+#define MST_PCMCIA_PWR_VPP_0    0x0	   /* voltage VPP = 0V */
+#define MST_PCMCIA_PWR_VPP_120  0x2 	   /* voltage VPP = 12V*/
+#define MST_PCMCIA_PWR_VPP_VCC  0x1	   /* voltage VPP = VCC */
+#define MST_PCMCIA_PWR_VCC_0    0x0	   /* voltage VCC = 0V */
+#define MST_PCMCIA_PWR_VCC_33   0x8	   /* voltage VCC = 3.3V */
+#define MST_PCMCIA_PWR_VCC_50   0x4	   /* voltage VCC = 5.0V */
+
+#endif