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772 lines
14 KiB
772 lines
14 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* linux/arch/arm/mach-footbridge/netwinder-hw.c |
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* |
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* Netwinder machine fixup |
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* |
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* Copyright (C) 1998, 1999 Russell King, Phil Blundell |
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*/ |
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#include <linux/module.h> |
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#include <linux/ioport.h> |
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#include <linux/kernel.h> |
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#include <linux/delay.h> |
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#include <linux/init.h> |
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#include <linux/io.h> |
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#include <linux/spinlock.h> |
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#include <linux/slab.h> |
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#include <linux/leds.h> |
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#include <asm/hardware/dec21285.h> |
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#include <asm/mach-types.h> |
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#include <asm/setup.h> |
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#include <asm/system_misc.h> |
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#include <asm/mach/arch.h> |
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#include "common.h" |
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#define IRDA_IO_BASE 0x180 |
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#define GP1_IO_BASE 0x338 |
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#define GP2_IO_BASE 0x33a |
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/* |
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* Winbond WB83977F accessibility stuff |
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*/ |
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static inline void wb977_open(void) |
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{ |
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outb(0x87, 0x370); |
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outb(0x87, 0x370); |
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} |
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static inline void wb977_close(void) |
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{ |
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outb(0xaa, 0x370); |
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} |
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static inline void wb977_wb(int reg, int val) |
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{ |
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outb(reg, 0x370); |
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outb(val, 0x371); |
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} |
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static inline void wb977_ww(int reg, int val) |
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{ |
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outb(reg, 0x370); |
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outb(val >> 8, 0x371); |
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outb(reg + 1, 0x370); |
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outb(val & 255, 0x371); |
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} |
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#define wb977_device_select(dev) wb977_wb(0x07, dev) |
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#define wb977_device_disable() wb977_wb(0x30, 0x00) |
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#define wb977_device_enable() wb977_wb(0x30, 0x01) |
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/* |
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* This is a lock for accessing ports GP1_IO_BASE and GP2_IO_BASE |
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*/ |
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DEFINE_RAW_SPINLOCK(nw_gpio_lock); |
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EXPORT_SYMBOL(nw_gpio_lock); |
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static unsigned int current_gpio_op; |
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static unsigned int current_gpio_io; |
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static unsigned int current_cpld; |
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void nw_gpio_modify_op(unsigned int mask, unsigned int set) |
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{ |
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unsigned int new_gpio, changed; |
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new_gpio = (current_gpio_op & ~mask) | set; |
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changed = new_gpio ^ current_gpio_op; |
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current_gpio_op = new_gpio; |
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if (changed & 0xff) |
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outb(new_gpio, GP1_IO_BASE); |
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if (changed & 0xff00) |
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outb(new_gpio >> 8, GP2_IO_BASE); |
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} |
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EXPORT_SYMBOL(nw_gpio_modify_op); |
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static inline void __gpio_modify_io(int mask, int in) |
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{ |
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unsigned int new_gpio, changed; |
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int port; |
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new_gpio = (current_gpio_io & ~mask) | in; |
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changed = new_gpio ^ current_gpio_io; |
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current_gpio_io = new_gpio; |
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changed >>= 1; |
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new_gpio >>= 1; |
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wb977_device_select(7); |
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for (port = 0xe1; changed && port < 0xe8; changed >>= 1) { |
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wb977_wb(port, new_gpio & 1); |
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port += 1; |
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new_gpio >>= 1; |
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} |
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wb977_device_select(8); |
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for (port = 0xe8; changed && port < 0xec; changed >>= 1) { |
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wb977_wb(port, new_gpio & 1); |
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port += 1; |
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new_gpio >>= 1; |
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} |
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} |
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void nw_gpio_modify_io(unsigned int mask, unsigned int in) |
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{ |
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/* Open up the SuperIO chip */ |
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wb977_open(); |
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__gpio_modify_io(mask, in); |
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/* Close up the EFER gate */ |
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wb977_close(); |
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} |
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EXPORT_SYMBOL(nw_gpio_modify_io); |
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unsigned int nw_gpio_read(void) |
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{ |
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return inb(GP1_IO_BASE) | inb(GP2_IO_BASE) << 8; |
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} |
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EXPORT_SYMBOL(nw_gpio_read); |
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/* |
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* Initialise the Winbond W83977F global registers |
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*/ |
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static inline void wb977_init_global(void) |
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{ |
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/* |
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* Enable R/W config registers |
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*/ |
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wb977_wb(0x26, 0x40); |
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/* |
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* Power down FDC (not used) |
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*/ |
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wb977_wb(0x22, 0xfe); |
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/* |
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* GP12, GP11, CIRRX, IRRXH, GP10 |
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*/ |
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wb977_wb(0x2a, 0xc1); |
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/* |
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* GP23, GP22, GP21, GP20, GP13 |
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*/ |
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wb977_wb(0x2b, 0x6b); |
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/* |
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* GP17, GP16, GP15, GP14 |
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*/ |
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wb977_wb(0x2c, 0x55); |
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} |
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/* |
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* Initialise the Winbond W83977F printer port |
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*/ |
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static inline void wb977_init_printer(void) |
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{ |
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wb977_device_select(1); |
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/* |
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* mode 1 == EPP |
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*/ |
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wb977_wb(0xf0, 0x01); |
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} |
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/* |
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* Initialise the Winbond W83977F keyboard controller |
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*/ |
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static inline void wb977_init_keyboard(void) |
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{ |
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wb977_device_select(5); |
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/* |
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* Keyboard controller address |
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*/ |
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wb977_ww(0x60, 0x0060); |
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wb977_ww(0x62, 0x0064); |
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/* |
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* Keyboard IRQ 1, active high, edge trigger |
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*/ |
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wb977_wb(0x70, 1); |
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wb977_wb(0x71, 0x02); |
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/* |
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* Mouse IRQ 5, active high, edge trigger |
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*/ |
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wb977_wb(0x72, 5); |
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wb977_wb(0x73, 0x02); |
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/* |
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* KBC 8MHz |
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*/ |
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wb977_wb(0xf0, 0x40); |
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/* |
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* Enable device |
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*/ |
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wb977_device_enable(); |
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} |
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/* |
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* Initialise the Winbond W83977F Infra-Red device |
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*/ |
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static inline void wb977_init_irda(void) |
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{ |
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wb977_device_select(6); |
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/* |
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* IR base address |
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*/ |
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wb977_ww(0x60, IRDA_IO_BASE); |
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/* |
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* IRDA IRQ 6, active high, edge trigger |
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*/ |
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wb977_wb(0x70, 6); |
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wb977_wb(0x71, 0x02); |
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/* |
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* RX DMA - ISA DMA 0 |
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*/ |
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wb977_wb(0x74, 0x00); |
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/* |
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* TX DMA - Disable Tx DMA |
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*/ |
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wb977_wb(0x75, 0x04); |
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/* |
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* Append CRC, Enable bank selection |
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*/ |
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wb977_wb(0xf0, 0x03); |
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/* |
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* Enable device |
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*/ |
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wb977_device_enable(); |
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} |
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/* |
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* Initialise Winbond W83977F general purpose IO |
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*/ |
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static inline void wb977_init_gpio(void) |
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{ |
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unsigned long flags; |
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/* |
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* Set up initial I/O definitions |
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*/ |
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current_gpio_io = -1; |
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__gpio_modify_io(-1, GPIO_DONE | GPIO_WDTIMER); |
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wb977_device_select(7); |
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/* |
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* Group1 base address |
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*/ |
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wb977_ww(0x60, GP1_IO_BASE); |
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wb977_ww(0x62, 0); |
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wb977_ww(0x64, 0); |
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/* |
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* GP10 (Orage button) IRQ 10, active high, edge trigger |
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*/ |
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wb977_wb(0x70, 10); |
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wb977_wb(0x71, 0x02); |
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/* |
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* GP10: Debounce filter enabled, IRQ, input |
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*/ |
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wb977_wb(0xe0, 0x19); |
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/* |
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* Enable Group1 |
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*/ |
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wb977_device_enable(); |
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wb977_device_select(8); |
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/* |
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* Group2 base address |
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*/ |
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wb977_ww(0x60, GP2_IO_BASE); |
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/* |
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* Clear watchdog timer regs |
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* - timer disable |
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*/ |
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wb977_wb(0xf2, 0x00); |
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/* |
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* - disable LED, no mouse nor keyboard IRQ |
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*/ |
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wb977_wb(0xf3, 0x00); |
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/* |
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* - timer counting, disable power LED, disable timeouot |
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*/ |
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wb977_wb(0xf4, 0x00); |
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/* |
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* Enable group2 |
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*/ |
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wb977_device_enable(); |
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/* |
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* Set Group1/Group2 outputs |
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*/ |
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raw_spin_lock_irqsave(&nw_gpio_lock, flags); |
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nw_gpio_modify_op(-1, GPIO_RED_LED | GPIO_FAN); |
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raw_spin_unlock_irqrestore(&nw_gpio_lock, flags); |
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} |
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/* |
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* Initialise the Winbond W83977F chip. |
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*/ |
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static void __init wb977_init(void) |
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{ |
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request_region(0x370, 2, "W83977AF configuration"); |
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/* |
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* Open up the SuperIO chip |
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*/ |
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wb977_open(); |
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/* |
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* Initialise the global registers |
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*/ |
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wb977_init_global(); |
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/* |
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* Initialise the various devices in |
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* the multi-IO chip. |
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*/ |
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wb977_init_printer(); |
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wb977_init_keyboard(); |
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wb977_init_irda(); |
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wb977_init_gpio(); |
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/* |
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* Close up the EFER gate |
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*/ |
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wb977_close(); |
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} |
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void nw_cpld_modify(unsigned int mask, unsigned int set) |
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{ |
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int msk; |
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current_cpld = (current_cpld & ~mask) | set; |
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nw_gpio_modify_io(GPIO_DATA | GPIO_IOCLK | GPIO_IOLOAD, 0); |
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nw_gpio_modify_op(GPIO_IOLOAD, 0); |
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for (msk = 8; msk; msk >>= 1) { |
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int bit = current_cpld & msk; |
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nw_gpio_modify_op(GPIO_DATA | GPIO_IOCLK, bit ? GPIO_DATA : 0); |
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nw_gpio_modify_op(GPIO_IOCLK, GPIO_IOCLK); |
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} |
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nw_gpio_modify_op(GPIO_IOCLK|GPIO_DATA, 0); |
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nw_gpio_modify_op(GPIO_IOLOAD|GPIO_DSCLK, GPIO_IOLOAD|GPIO_DSCLK); |
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nw_gpio_modify_op(GPIO_IOLOAD, 0); |
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} |
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EXPORT_SYMBOL(nw_cpld_modify); |
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static void __init cpld_init(void) |
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{ |
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unsigned long flags; |
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raw_spin_lock_irqsave(&nw_gpio_lock, flags); |
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nw_cpld_modify(-1, CPLD_UNMUTE | CPLD_7111_DISABLE); |
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raw_spin_unlock_irqrestore(&nw_gpio_lock, flags); |
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} |
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static unsigned char rwa_unlock[] __initdata = |
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{ 0x00, 0x00, 0x6a, 0xb5, 0xda, 0xed, 0xf6, 0xfb, 0x7d, 0xbe, 0xdf, 0x6f, 0x37, 0x1b, |
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0x0d, 0x86, 0xc3, 0x61, 0xb0, 0x58, 0x2c, 0x16, 0x8b, 0x45, 0xa2, 0xd1, 0xe8, 0x74, |
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0x3a, 0x9d, 0xce, 0xe7, 0x73, 0x39 }; |
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#ifndef DEBUG |
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#define dprintk(x...) |
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#else |
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#define dprintk(x...) printk(x) |
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#endif |
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#define WRITE_RWA(r,v) do { outb((r), 0x279); udelay(10); outb((v), 0xa79); } while (0) |
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static inline void rwa010_unlock(void) |
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{ |
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int i; |
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WRITE_RWA(2, 2); |
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mdelay(10); |
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for (i = 0; i < sizeof(rwa_unlock); i++) { |
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outb(rwa_unlock[i], 0x279); |
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udelay(10); |
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} |
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} |
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static inline void rwa010_read_ident(void) |
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{ |
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unsigned char si[9]; |
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int i, j; |
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WRITE_RWA(3, 0); |
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WRITE_RWA(0, 128); |
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outb(1, 0x279); |
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mdelay(1); |
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dprintk("Identifier: "); |
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for (i = 0; i < 9; i++) { |
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si[i] = 0; |
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for (j = 0; j < 8; j++) { |
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int bit; |
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udelay(250); |
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inb(0x203); |
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udelay(250); |
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bit = inb(0x203); |
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dprintk("%02X ", bit); |
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bit = (bit == 0xaa) ? 1 : 0; |
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si[i] |= bit << j; |
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} |
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dprintk("(%02X) ", si[i]); |
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} |
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dprintk("\n"); |
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} |
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static inline void rwa010_global_init(void) |
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{ |
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WRITE_RWA(6, 2); // Assign a card no = 2 |
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dprintk("Card no = %d\n", inb(0x203)); |
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/* disable the modem section of the chip */ |
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WRITE_RWA(7, 3); |
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WRITE_RWA(0x30, 0); |
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/* disable the cdrom section of the chip */ |
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WRITE_RWA(7, 4); |
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WRITE_RWA(0x30, 0); |
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/* disable the MPU-401 section of the chip */ |
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WRITE_RWA(7, 2); |
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WRITE_RWA(0x30, 0); |
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} |
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static inline void rwa010_game_port_init(void) |
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{ |
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int i; |
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WRITE_RWA(7, 5); |
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dprintk("Slider base: "); |
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WRITE_RWA(0x61, 1); |
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i = inb(0x203); |
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WRITE_RWA(0x60, 2); |
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dprintk("%02X%02X (201)\n", inb(0x203), i); |
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WRITE_RWA(0x30, 1); |
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} |
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static inline void rwa010_waveartist_init(int base, int irq, int dma) |
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{ |
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int i; |
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WRITE_RWA(7, 0); |
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dprintk("WaveArtist base: "); |
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WRITE_RWA(0x61, base & 255); |
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i = inb(0x203); |
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WRITE_RWA(0x60, base >> 8); |
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dprintk("%02X%02X (%X),", inb(0x203), i, base); |
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WRITE_RWA(0x70, irq); |
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dprintk(" irq: %d (%d),", inb(0x203), irq); |
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WRITE_RWA(0x74, dma); |
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dprintk(" dma: %d (%d)\n", inb(0x203), dma); |
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WRITE_RWA(0x30, 1); |
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} |
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static inline void rwa010_soundblaster_init(int sb_base, int al_base, int irq, int dma) |
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{ |
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int i; |
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WRITE_RWA(7, 1); |
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dprintk("SoundBlaster base: "); |
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WRITE_RWA(0x61, sb_base & 255); |
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i = inb(0x203); |
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WRITE_RWA(0x60, sb_base >> 8); |
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dprintk("%02X%02X (%X),", inb(0x203), i, sb_base); |
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dprintk(" irq: "); |
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WRITE_RWA(0x70, irq); |
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dprintk("%d (%d),", inb(0x203), irq); |
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dprintk(" 8-bit DMA: "); |
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WRITE_RWA(0x74, dma); |
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dprintk("%d (%d)\n", inb(0x203), dma); |
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dprintk("AdLib base: "); |
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WRITE_RWA(0x63, al_base & 255); |
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i = inb(0x203); |
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WRITE_RWA(0x62, al_base >> 8); |
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dprintk("%02X%02X (%X)\n", inb(0x203), i, al_base); |
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WRITE_RWA(0x30, 1); |
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} |
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static void rwa010_soundblaster_reset(void) |
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{ |
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int i; |
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outb(1, 0x226); |
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udelay(3); |
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outb(0, 0x226); |
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for (i = 0; i < 5; i++) { |
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if (inb(0x22e) & 0x80) |
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break; |
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mdelay(1); |
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} |
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if (i == 5) |
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printk("SoundBlaster: DSP reset failed\n"); |
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dprintk("SoundBlaster DSP reset: %02X (AA)\n", inb(0x22a)); |
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for (i = 0; i < 5; i++) { |
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if ((inb(0x22c) & 0x80) == 0) |
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break; |
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mdelay(1); |
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} |
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if (i == 5) |
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printk("SoundBlaster: DSP not ready\n"); |
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else { |
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outb(0xe1, 0x22c); |
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dprintk("SoundBlaster DSP id: "); |
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i = inb(0x22a); |
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udelay(1); |
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i |= inb(0x22a) << 8; |
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dprintk("%04X\n", i); |
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for (i = 0; i < 5; i++) { |
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if ((inb(0x22c) & 0x80) == 0) |
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break; |
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mdelay(1); |
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} |
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if (i == 5) |
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printk("SoundBlaster: could not turn speaker off\n"); |
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outb(0xd3, 0x22c); |
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} |
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/* turn on OPL3 */ |
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outb(5, 0x38a); |
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outb(1, 0x38b); |
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} |
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static void __init rwa010_init(void) |
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{ |
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rwa010_unlock(); |
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rwa010_read_ident(); |
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rwa010_global_init(); |
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rwa010_game_port_init(); |
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rwa010_waveartist_init(0x250, 3, 7); |
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rwa010_soundblaster_init(0x220, 0x388, 3, 1); |
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rwa010_soundblaster_reset(); |
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} |
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|
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/* |
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* Initialise any other hardware after we've got the PCI bus |
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* initialised. We may need the PCI bus to talk to this other |
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* hardware. |
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*/ |
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static int __init nw_hw_init(void) |
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{ |
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if (machine_is_netwinder()) { |
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wb977_init(); |
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cpld_init(); |
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rwa010_init(); |
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} |
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return 0; |
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} |
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|
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__initcall(nw_hw_init); |
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|
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/* |
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* Older NeTTroms either do not provide a parameters |
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* page, or they don't supply correct information in |
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* the parameter page. |
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*/ |
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static void __init |
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fixup_netwinder(struct tag *tags, char **cmdline) |
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{ |
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#ifdef CONFIG_ISAPNP |
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extern int isapnp_disable; |
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|
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/* |
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* We must not use the kernels ISAPnP code |
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* on the NetWinder - it will reset the settings |
|
* for the WaveArtist chip and render it inoperable. |
|
*/ |
|
isapnp_disable = 1; |
|
#endif |
|
} |
|
|
|
static void netwinder_restart(enum reboot_mode mode, const char *cmd) |
|
{ |
|
if (mode == REBOOT_SOFT) { |
|
/* Jump into the ROM */ |
|
soft_restart(0x41000000); |
|
} else { |
|
local_irq_disable(); |
|
local_fiq_disable(); |
|
|
|
/* open up the SuperIO chip */ |
|
outb(0x87, 0x370); |
|
outb(0x87, 0x370); |
|
|
|
/* aux function group 1 (logical device 7) */ |
|
outb(0x07, 0x370); |
|
outb(0x07, 0x371); |
|
|
|
/* set GP16 for WD-TIMER output */ |
|
outb(0xe6, 0x370); |
|
outb(0x00, 0x371); |
|
|
|
/* set a RED LED and toggle WD_TIMER for rebooting */ |
|
outb(0xc4, 0x338); |
|
} |
|
} |
|
|
|
/* LEDs */ |
|
#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS) |
|
struct netwinder_led { |
|
struct led_classdev cdev; |
|
u8 mask; |
|
}; |
|
|
|
/* |
|
* The triggers lines up below will only be used if the |
|
* LED triggers are compiled in. |
|
*/ |
|
static const struct { |
|
const char *name; |
|
const char *trigger; |
|
} netwinder_leds[] = { |
|
{ "netwinder:green", "heartbeat", }, |
|
{ "netwinder:red", "cpu0", }, |
|
}; |
|
|
|
/* |
|
* The LED control in Netwinder is reversed: |
|
* - setting bit means turn off LED |
|
* - clearing bit means turn on LED |
|
*/ |
|
static void netwinder_led_set(struct led_classdev *cdev, |
|
enum led_brightness b) |
|
{ |
|
struct netwinder_led *led = container_of(cdev, |
|
struct netwinder_led, cdev); |
|
unsigned long flags; |
|
u32 reg; |
|
|
|
raw_spin_lock_irqsave(&nw_gpio_lock, flags); |
|
reg = nw_gpio_read(); |
|
if (b != LED_OFF) |
|
reg &= ~led->mask; |
|
else |
|
reg |= led->mask; |
|
nw_gpio_modify_op(led->mask, reg); |
|
raw_spin_unlock_irqrestore(&nw_gpio_lock, flags); |
|
} |
|
|
|
static enum led_brightness netwinder_led_get(struct led_classdev *cdev) |
|
{ |
|
struct netwinder_led *led = container_of(cdev, |
|
struct netwinder_led, cdev); |
|
unsigned long flags; |
|
u32 reg; |
|
|
|
raw_spin_lock_irqsave(&nw_gpio_lock, flags); |
|
reg = nw_gpio_read(); |
|
raw_spin_unlock_irqrestore(&nw_gpio_lock, flags); |
|
|
|
return (reg & led->mask) ? LED_OFF : LED_FULL; |
|
} |
|
|
|
static int __init netwinder_leds_init(void) |
|
{ |
|
int i; |
|
|
|
if (!machine_is_netwinder()) |
|
return -ENODEV; |
|
|
|
for (i = 0; i < ARRAY_SIZE(netwinder_leds); i++) { |
|
struct netwinder_led *led; |
|
|
|
led = kzalloc(sizeof(*led), GFP_KERNEL); |
|
if (!led) |
|
break; |
|
|
|
led->cdev.name = netwinder_leds[i].name; |
|
led->cdev.brightness_set = netwinder_led_set; |
|
led->cdev.brightness_get = netwinder_led_get; |
|
led->cdev.default_trigger = netwinder_leds[i].trigger; |
|
|
|
if (i == 0) |
|
led->mask = GPIO_GREEN_LED; |
|
else |
|
led->mask = GPIO_RED_LED; |
|
|
|
if (led_classdev_register(NULL, &led->cdev) < 0) { |
|
kfree(led); |
|
break; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* Since we may have triggers on any subsystem, defer registration |
|
* until after subsystem_init. |
|
*/ |
|
fs_initcall(netwinder_leds_init); |
|
#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, |
|
.init_time = isa_timer_init, |
|
.restart = netwinder_restart, |
|
MACHINE_END
|
|
|