/* * linux/arch/arm/mach-footbridge/netwinder-hw.c * * Netwinder machine fixup * * Copyright (C) 1998, 1999 Russell King, Phil Blundell */#include <linux/config.h>#include <linux/module.h>#include <linux/ioport.h>#include <linux/kernel.h>#include <linux/delay.h>#include <linux/init.h>#include <asm/io.h>#include <asm/leds.h>#include <asm/mach-types.h>#define IRDA_IO_BASE		0x180#define GP1_IO_BASE		0x338#define GP2_IO_BASE		0x33a#ifdef CONFIG_LEDS#define DEFAULT_LEDS	0#else#define DEFAULT_LEDS	GPIO_GREEN_LED#endif/* * Winbond WB83977F accessibility stuff */static inline void wb977_open(void){	outb(0x87, 0x370);	outb(0x87, 0x370);}static inline void wb977_close(void){	outb(0xaa, 0x370);}static inline void wb977_wb(int reg, int val){	outb(reg, 0x370);	outb(val, 0x371);}static inline void wb977_ww(int reg, int val){	outb(reg, 0x370);	outb(val >> 8, 0x371);	outb(reg + 1, 0x370);	outb(val, 0x371);}#define wb977_device_select(dev)	wb977_wb(0x07, dev)#define wb977_device_disable()		wb977_wb(0x30, 0x00)#define wb977_device_enable()		wb977_wb(0x30, 0x01)/* * This is a lock for accessing ports GP1_IO_BASE and GP2_IO_BASE */spinlock_t gpio_lock = SPIN_LOCK_UNLOCKED;static unsigned int current_gpio_op;static unsigned int current_gpio_io;static unsigned int current_cpld;void gpio_modify_op(int mask, int set){	unsigned int new_gpio, changed;	new_gpio = (current_gpio_op & ~mask) | set;	changed = new_gpio ^ current_gpio_op;	current_gpio_op = new_gpio;	if (changed & 0xff)		outb(new_gpio, GP1_IO_BASE);	if (changed & 0xff00)		outb(new_gpio >> 8, GP2_IO_BASE);}static inline void __gpio_modify_io(int mask, int in){	unsigned int new_gpio, changed;	int port;	new_gpio = (current_gpio_io & ~mask) | in;	changed = new_gpio ^ current_gpio_io;	current_gpio_io = new_gpio;	changed >>= 1;	new_gpio >>= 1;	wb977_device_select(7);	for (port = 0xe1; changed && port < 0xe8; changed >>= 1) {		wb977_wb(port, new_gpio & 1);		port += 1;		new_gpio >>= 1;	}	wb977_device_select(8);	for (port = 0xe8; changed && port < 0xec; changed >>= 1) {		wb977_wb(port, new_gpio & 1);		port += 1;		new_gpio >>= 1;	}}void gpio_modify_io(int mask, int in){	/* Open up the SuperIO chip */	wb977_open();	__gpio_modify_io(mask, in);	/* Close up the EFER gate */	wb977_close();}int gpio_read(void){	return inb(GP1_IO_BASE) | inb(GP2_IO_BASE) << 8;}/* * Initialise the Winbond W83977F global registers */static inline void wb977_init_global(void){	/*	 * Enable R/W config registers	 */	wb977_wb(0x26, 0x40);	/*	 * Power down FDC (not used)	 */	wb977_wb(0x22, 0xfe);	/*	 * GP12, GP11, CIRRX, IRRXH, GP10	 */	wb977_wb(0x2a, 0xc1);	/*	 * GP23, GP22, GP21, GP20, GP13	 */	wb977_wb(0x2b, 0x6b);	/*	 * GP17, GP16, GP15, GP14	 */	wb977_wb(0x2c, 0x55);}/* * Initialise the Winbond W83977F printer port */static inline void wb977_init_printer(void){	wb977_device_select(1);	/*	 * mode 1 == EPP	 */	wb977_wb(0xf0, 0x01);}/* * Initialise the Winbond W83977F keyboard controller */static inline void wb977_init_keyboard(void){	wb977_device_select(5);	/*	 * Keyboard controller address	 */	wb977_ww(0x60, 0x0060);	wb977_ww(0x62, 0x0064);	/*	 * Keyboard IRQ 1, active high, edge trigger	 */	wb977_wb(0x70, 1);	wb977_wb(0x71, 0x02);	/*	 * Mouse IRQ 5, active high, edge trigger	 */	wb977_wb(0x72, 5);	wb977_wb(0x73, 0x02);	/*	 * KBC 8MHz	 */	wb977_wb(0xf0, 0x40);	/*	 * Enable device	 */	wb977_device_enable();}/* * Initialise the Winbond W83977F Infra-Red device */static inline void wb977_init_irda(void){	wb977_device_select(6);	/*	 * IR base address	 */	wb977_ww(0x60, IRDA_IO_BASE);	/*	 * IRDA IRQ 6, active high, edge trigger	 */	wb977_wb(0x70, 6);	wb977_wb(0x71, 0x02);	/*	 * RX DMA - ISA DMA 0	 */	wb977_wb(0x74, 0x00);	/*	 * TX DMA - Disable Tx DMA	 */	wb977_wb(0x75, 0x04);	/*	 * Append CRC, Enable bank selection	 */	wb977_wb(0xf0, 0x03);	/*	 * Enable device	 */	wb977_device_enable();}/* * Initialise Winbond W83977F general purpose IO */static inline void wb977_init_gpio(void){	unsigned long flags;	/*	 * Set up initial I/O definitions	 */	current_gpio_io = -1;	__gpio_modify_io(-1, GPIO_DONE | GPIO_WDTIMER);	wb977_device_select(7);	/*	 * Group1 base address	 */	wb977_ww(0x60, GP1_IO_BASE);	wb977_ww(0x62, 0);	wb977_ww(0x64, 0);	/*	 * GP10 (Orage button) IRQ 10, active high, edge trigger	 */	wb977_wb(0x70, 10);	wb977_wb(0x71, 0x02);	/*	 * GP10: Debounce filter enabled, IRQ, input	 */	wb977_wb(0xe0, 0x19);	/*	 * Enable Group1	 */	wb977_device_enable();	wb977_device_select(8);	/*	 * Group2 base address	 */	wb977_ww(0x60, GP2_IO_BASE);	/*	 * Clear watchdog timer regs	 *  - timer disable	 */	wb977_wb(0xf2, 0x00);	/*	 *  - disable LED, no mouse nor keyboard IRQ	 */	wb977_wb(0xf3, 0x00);	/*	 *  - timer counting, disable power LED, disable timeouot	 */	wb977_wb(0xf4, 0x00);	/*	 * Enable group2	 */	wb977_device_enable();	/*	 * Set Group1/Group2 outputs	 */	spin_lock_irqsave(&gpio_lock, flags);	gpio_modify_op(-1, GPIO_RED_LED | GPIO_FAN);	spin_unlock_irqrestore(&gpio_lock, flags);}/* * Initialise the Winbond W83977F chip. */static void __init wb977_init(void){	request_region(0x370, 2, "W83977AF configuration");	/*	 * Open up the SuperIO chip	 */	wb977_open();	/*	 * Initialise the global registers	 */	wb977_init_global();	/*	 * Initialise the various devices in	 * the multi-IO chip.	 */	wb977_init_printer();	wb977_init_keyboard();	wb977_init_irda();	wb977_init_gpio();	/*	 * Close up the EFER gate	 */	wb977_close();}void cpld_modify(int mask, int set){	int msk;	current_cpld = (current_cpld & ~mask) | set;	gpio_modify_io(GPIO_DATA | GPIO_IOCLK | GPIO_IOLOAD, 0);	gpio_modify_op(GPIO_IOLOAD, 0);	for (msk = 8; msk; msk >>= 1) {		int bit = current_cpld & msk;		gpio_modify_op(GPIO_DATA | GPIO_IOCLK, bit ? GPIO_DATA : 0);		gpio_modify_op(GPIO_IOCLK, GPIO_IOCLK);	}	gpio_modify_op(GPIO_IOCLK|GPIO_DATA, 0);	gpio_modify_op(GPIO_IOLOAD|GPIO_DSCLK, GPIO_IOLOAD|GPIO_DSCLK);	gpio_modify_op(GPIO_IOLOAD, 0);}static void __init cpld_init(void){	unsigned long flags;	spin_lock_irqsave(&gpio_lock, flags);	cpld_modify(-1, CPLD_UNMUTE | CPLD_7111_DISABLE);	spin_unlock_irqrestore(&gpio_lock, flags);}static unsigned char rwa_unlock[] __initdata ={ 0x00, 0x00, 0x6a, 0xb5, 0xda, 0xed, 0xf6, 0xfb, 0x7d, 0xbe, 0xdf, 0x6f, 0x37, 0x1b,  0x0d, 0x86, 0xc3, 0x61, 0xb0, 0x58, 0x2c, 0x16, 0x8b, 0x45, 0xa2, 0xd1, 0xe8, 0x74,  0x3a, 0x9d, 0xce, 0xe7, 0x73, 0x39 };#ifndef DEBUG#define dprintk(x...)#else#define dprintk(x...) printk(x)#endif#define WRITE_RWA(r,v) do { outb((r), 0x279); udelay(10); outb((v), 0xa79); } while (0)static inline void rwa010_unlock(void){	int i;	WRITE_RWA(2, 2);	mdelay(10);	for (i = 0; i < sizeof(rwa_unlock); i++) {		outb(rwa_unlock[i], 0x279);		udelay(10);	}}static inline void rwa010_read_ident(void){	unsigned char si[9];	int i, j;	WRITE_RWA(3, 0);	WRITE_RWA(0, 128);	outb(1, 0x279);	mdelay(1);	dprintk("Identifier: ");	for (i = 0; i < 9; i++) {		si[i] = 0;		for (j = 0; j < 8; j++) {			int bit;			udelay(250);			inb(0x203);			udelay(250);			bit = inb(0x203);			dprintk("%02X ", bit);			bit = (bit == 0xaa) ? 1 : 0;			si[i] |= bit << j;		}		dprintk("(%02X) ", si[i]);	}	dprintk("\n");}static inline void rwa010_global_init(void){	WRITE_RWA(6, 2);	// Assign a card no = 2	dprintk("Card no = %d\n", inb(0x203));	/* disable the modem section of the chip */	WRITE_RWA(7, 3);	WRITE_RWA(0x30, 0);	/* disable the cdrom section of the chip */	WRITE_RWA(7, 4);	WRITE_RWA(0x30, 0);	/* disable the MPU-401 section of the chip */	WRITE_RWA(7, 2);	WRITE_RWA(0x30, 0);}static inline void rwa010_game_port_init(void){	int i;	WRITE_RWA(7, 5);	dprintk("Slider base: ");	WRITE_RWA(0x61, 1);	i = inb(0x203);	WRITE_RWA(0x60, 2);	dprintk("%02X%02X (201)\n", inb(0x203), i);	WRITE_RWA(0x30, 1);}static inline void rwa010_waveartist_init(int base, int irq, int dma){	int i;	WRITE_RWA(7, 0);	dprintk("WaveArtist base: ");	WRITE_RWA(0x61, base);	i = inb(0x203);	WRITE_RWA(0x60, base >> 8);	dprintk("%02X%02X (%X),", inb(0x203), i, base);	WRITE_RWA(0x70, irq);	dprintk(" irq: %d (%d),", inb(0x203), irq);	WRITE_RWA(0x74, dma);	dprintk(" dma: %d (%d)\n", inb(0x203), dma);	WRITE_RWA(0x30, 1);}static inline void rwa010_soundblaster_init(int sb_base, int al_base, int irq, int dma){	int i;	WRITE_RWA(7, 1);	dprintk("SoundBlaster base: ");	WRITE_RWA(0x61, sb_base);	i = inb(0x203);	WRITE_RWA(0x60, sb_base >> 8);	dprintk("%02X%02X (%X),", inb(0x203), i, sb_base);	dprintk(" irq: ");	WRITE_RWA(0x70, irq);	dprintk("%d (%d),", inb(0x203), irq);	dprintk(" 8-bit DMA: ");	WRITE_RWA(0x74, dma);	dprintk("%d (%d)\n", inb(0x203), dma);	dprintk("AdLib base: ");	WRITE_RWA(0x63, al_base);	i = inb(0x203);	WRITE_RWA(0x62, al_base >> 8);	dprintk("%02X%02X (%X)\n", inb(0x203), i, al_base);	WRITE_RWA(0x30, 1);}static void rwa010_soundblaster_reset(void){	int i;	outb(1, 0x226);	udelay(3);	outb(0, 0x226);	for (i = 0; i < 5; i++) {		if (inb(0x22e) & 0x80)			break;		mdelay(1);	}	if (i == 5)		printk("SoundBlaster: DSP reset failed\n");	dprintk("SoundBlaster DSP reset: %02X (AA)\n", inb(0x22a));	for (i = 0; i < 5; i++) {		if ((inb(0x22c) & 0x80) == 0)			break;		mdelay(1);	}	if (i == 5)		printk("SoundBlaster: DSP not ready\n");	else {		outb(0xe1, 0x22c);		dprintk("SoundBlaster DSP id: ");		i = inb(0x22a);		udelay(1);		i |= inb(0x22a) << 8;		dprintk("%04X\n", i);		for (i = 0; i < 5; i++) {			if ((inb(0x22c) & 0x80) == 0)				break;			mdelay(1);		}		if (i == 5)			printk("SoundBlaster: could not turn speaker off\n");		outb(0xd3, 0x22c);	}	/* turn on OPL3 */	outb(5, 0x38a);	outb(1, 0x38b);}static void __init rwa010_init(void){	rwa010_unlock();	rwa010_read_ident();	rwa010_global_init();	rwa010_game_port_init();	rwa010_waveartist_init(0x250, 3, 7);	rwa010_soundblaster_init(0x220, 0x388, 3, 1);	rwa010_soundblaster_reset();}EXPORT_SYMBOL(gpio_lock);EXPORT_SYMBOL(gpio_modify_op);EXPORT_SYMBOL(gpio_modify_io);EXPORT_SYMBOL(cpld_modify);/* * Initialise any other hardware after we've got the PCI bus * initialised.  We may need the PCI bus to talk to this other * hardware. */static int __init nw_hw_init(void){	if (machine_is_netwinder()) {		unsigned long flags;		wb977_init();		cpld_init();		rwa010_init();		spin_lock_irqsave(&gpio_lock, flags);		gpio_modify_op(GPIO_RED_LED|GPIO_GREEN_LED, DEFAULT_LEDS);		spin_unlock_irqrestore(&gpio_lock, flags);	}	return 0;}__initcall(nw_hw_init);