/* * linux/arch/arm/mach-footbridge/netwinder-hw.c * * Netwinder machine fixup * * Copyright (C) 1998, 1999 Russell King, Phil Blundell */ #include <linux/module.h> #include <linux/ioport.h> #include <linux/kernel.h> #include <linux/delay.h> #include <linux/init.h> #include <linux/io.h> #include <linux/spinlock.h> #include <asm/hardware/dec21285.h> #include <asm/leds.h> #include <asm/mach-types.h> #include <asm/setup.h> #include <asm/mach/arch.h> #include "common.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 & 255, 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 */ DEFINE_RAW_SPINLOCK(nw_gpio_lock); EXPORT_SYMBOL(nw_gpio_lock); static unsigned int current_gpio_op; static unsigned int current_gpio_io; static unsigned int current_cpld; void nw_gpio_modify_op(unsigned int mask, unsigned 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); } EXPORT_SYMBOL(nw_gpio_modify_op); 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 nw_gpio_modify_io(unsigned int mask, unsigned int in) { /* Open up the SuperIO chip */ wb977_open(); __gpio_modify_io(mask, in); /* Close up the EFER gate */ wb977_close(); } EXPORT_SYMBOL(nw_gpio_modify_io); unsigned int nw_gpio_read(void) { return inb(GP1_IO_BASE) | inb(GP2_IO_BASE) << 8; } EXPORT_SYMBOL(nw_gpio_read); /* * 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 */ raw_spin_lock_irqsave(&nw_gpio_lock, flags); nw_gpio_modify_op(-1, GPIO_RED_LED | GPIO_FAN); raw_spin_unlock_irqrestore(&nw_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 nw_cpld_modify(unsigned int mask, unsigned int set) { int msk; current_cpld = (current_cpld & ~mask) | set; nw_gpio_modify_io(GPIO_DATA | GPIO_IOCLK | GPIO_IOLOAD, 0); nw_gpio_modify_op(GPIO_IOLOAD, 0); for (msk = 8; msk; msk >>= 1) { int bit = current_cpld & msk; nw_gpio_modify_op(GPIO_DATA | GPIO_IOCLK, bit ? GPIO_DATA : 0); nw_gpio_modify_op(GPIO_IOCLK, GPIO_IOCLK); } nw_gpio_modify_op(GPIO_IOCLK|GPIO_DATA, 0); nw_gpio_modify_op(GPIO_IOLOAD|GPIO_DSCLK, GPIO_IOLOAD|GPIO_DSCLK); nw_gpio_modify_op(GPIO_IOLOAD, 0); } EXPORT_SYMBOL(nw_cpld_modify); static void __init cpld_init(void) { unsigned long flags; raw_spin_lock_irqsave(&nw_gpio_lock, flags); nw_cpld_modify(-1, CPLD_UNMUTE | CPLD_7111_DISABLE); raw_spin_unlock_irqrestore(&nw_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 & 255); 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 & 255); 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 & 255); 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(); } /* * 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(); raw_spin_lock_irqsave(&nw_gpio_lock, flags); nw_gpio_modify_op(GPIO_RED_LED|GPIO_GREEN_LED, DEFAULT_LEDS); raw_spin_unlock_irqrestore(&nw_gpio_lock, flags); } return 0; } __initcall(nw_hw_init); /* * Older NeTTroms either do not provide a parameters * page, or they don't supply correct information in * the parameter page. */ static void __init fixup_netwinder(struct tag *tags, char **cmdline, struct meminfo *mi) { #ifdef CONFIG_ISAPNP extern int isapnp_disable; /* * We must not use the kernels ISAPnP code * on the NetWinder - it will reset the settings * for the WaveArtist chip and render it inoperable. */ isapnp_disable = 1; #endif } MACHINE_START(NETWINDER, "Rebel-NetWinder") /* Maintainer: Russell King/Rebel.com */ .atag_offset = 0x100, .video_start = 0x000a0000, .video_end = 0x000bffff, .reserve_lp0 = 1, .reserve_lp2 = 1, .fixup = fixup_netwinder, .map_io = footbridge_map_io, .init_irq = footbridge_init_irq, .timer = &isa_timer, MACHINE_END