1160 lines
31 KiB
C
1160 lines
31 KiB
C
/*
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* linux/arch/arm/common/locomo.c
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*
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* Sharp LoCoMo support
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This file contains all generic LoCoMo support.
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*
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* All initialization functions provided here are intended to be called
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* from machine specific code with proper arguments when required.
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*
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* Based on sa1111.c
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/device.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <asm/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/mach/irq.h>
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#include <asm/hardware/locomo.h>
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/* M62332 output channel selection */
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#define M62332_EVR_CH 1 /* M62332 volume channel number */
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/* 0 : CH.1 , 1 : CH. 2 */
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/* DAC send data */
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#define M62332_SLAVE_ADDR 0x4e /* Slave address */
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#define M62332_W_BIT 0x00 /* W bit (0 only) */
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#define M62332_SUB_ADDR 0x00 /* Sub address */
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#define M62332_A_BIT 0x00 /* A bit (0 only) */
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/* DAC setup and hold times (expressed in us) */
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#define DAC_BUS_FREE_TIME 5 /* 4.7 us */
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#define DAC_START_SETUP_TIME 5 /* 4.7 us */
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#define DAC_STOP_SETUP_TIME 4 /* 4.0 us */
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#define DAC_START_HOLD_TIME 5 /* 4.7 us */
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#define DAC_SCL_LOW_HOLD_TIME 5 /* 4.7 us */
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#define DAC_SCL_HIGH_HOLD_TIME 4 /* 4.0 us */
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#define DAC_DATA_SETUP_TIME 1 /* 250 ns */
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#define DAC_DATA_HOLD_TIME 1 /* 300 ns */
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#define DAC_LOW_SETUP_TIME 1 /* 300 ns */
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#define DAC_HIGH_SETUP_TIME 1 /* 1000 ns */
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/* the following is the overall data for the locomo chip */
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struct locomo {
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struct device *dev;
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unsigned long phys;
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unsigned int irq;
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spinlock_t lock;
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void *base;
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};
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struct locomo_dev_info {
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unsigned long offset;
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unsigned long length;
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unsigned int devid;
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unsigned int irq[1];
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const char * name;
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};
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/* All the locomo devices. If offset is non-zero, the mapbase for the
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* locomo_dev will be set to the chip base plus offset. If offset is
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* zero, then the mapbase for the locomo_dev will be set to zero. An
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* offset of zero means the device only uses GPIOs or other helper
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* functions inside this file */
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static struct locomo_dev_info locomo_devices[] = {
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{
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.devid = LOCOMO_DEVID_KEYBOARD,
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.irq = {
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IRQ_LOCOMO_KEY,
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},
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.name = "locomo-keyboard",
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.offset = LOCOMO_KEYBOARD,
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.length = 16,
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},
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{
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.devid = LOCOMO_DEVID_FRONTLIGHT,
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.irq = {},
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.name = "locomo-frontlight",
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.offset = LOCOMO_FRONTLIGHT,
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.length = 8,
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},
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{
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.devid = LOCOMO_DEVID_BACKLIGHT,
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.irq = {},
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.name = "locomo-backlight",
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.offset = LOCOMO_BACKLIGHT,
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.length = 8,
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},
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{
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.devid = LOCOMO_DEVID_AUDIO,
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.irq = {},
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.name = "locomo-audio",
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.offset = LOCOMO_AUDIO,
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.length = 4,
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},
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{
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.devid = LOCOMO_DEVID_LED,
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.irq = {},
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.name = "locomo-led",
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.offset = LOCOMO_LED,
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.length = 8,
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},
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{
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.devid = LOCOMO_DEVID_UART,
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.irq = {},
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.name = "locomo-uart",
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.offset = 0,
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.length = 0,
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},
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};
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/** LoCoMo interrupt handling stuff.
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* NOTE: LoCoMo has a 1 to many mapping on all of its IRQs.
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* that is, there is only one real hardware interrupt
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* we determine which interrupt it is by reading some IO memory.
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* We have two levels of expansion, first in the handler for the
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* hardware interrupt we generate an interrupt
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* IRQ_LOCOMO_*_BASE and those handlers generate more interrupts
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*
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* hardware irq reads LOCOMO_ICR & 0x0f00
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* IRQ_LOCOMO_KEY_BASE
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* IRQ_LOCOMO_GPIO_BASE
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* IRQ_LOCOMO_LT_BASE
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* IRQ_LOCOMO_SPI_BASE
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* IRQ_LOCOMO_KEY_BASE reads LOCOMO_KIC & 0x0001
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* IRQ_LOCOMO_KEY
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* IRQ_LOCOMO_GPIO_BASE reads LOCOMO_GIR & LOCOMO_GPD & 0xffff
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* IRQ_LOCOMO_GPIO[0-15]
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* IRQ_LOCOMO_LT_BASE reads LOCOMO_LTINT & 0x0001
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* IRQ_LOCOMO_LT
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* IRQ_LOCOMO_SPI_BASE reads LOCOMO_SPIIR & 0x000F
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* IRQ_LOCOMO_SPI_RFR
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* IRQ_LOCOMO_SPI_RFW
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* IRQ_LOCOMO_SPI_OVRN
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* IRQ_LOCOMO_SPI_TEND
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*/
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#define LOCOMO_IRQ_START (IRQ_LOCOMO_KEY_BASE)
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#define LOCOMO_IRQ_KEY_START (IRQ_LOCOMO_KEY)
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#define LOCOMO_IRQ_GPIO_START (IRQ_LOCOMO_GPIO0)
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#define LOCOMO_IRQ_LT_START (IRQ_LOCOMO_LT)
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#define LOCOMO_IRQ_SPI_START (IRQ_LOCOMO_SPI_RFR)
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static void locomo_handler(unsigned int irq, struct irqdesc *desc,
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struct pt_regs *regs)
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{
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int req, i;
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struct irqdesc *d;
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void *mapbase = get_irq_chipdata(irq);
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/* Acknowledge the parent IRQ */
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desc->chip->ack(irq);
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/* check why this interrupt was generated */
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req = locomo_readl(mapbase + LOCOMO_ICR) & 0x0f00;
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if (req) {
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/* generate the next interrupt(s) */
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irq = LOCOMO_IRQ_START;
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d = irq_desc + irq;
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for (i = 0; i <= 3; i++, d++, irq++) {
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if (req & (0x0100 << i)) {
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desc_handle_irq(irq, d, regs);
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}
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}
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}
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}
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static void locomo_ack_irq(unsigned int irq)
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{
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}
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static void locomo_mask_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_ICR);
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r &= ~(0x0010 << (irq - LOCOMO_IRQ_START));
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locomo_writel(r, mapbase + LOCOMO_ICR);
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}
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static void locomo_unmask_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_ICR);
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r |= (0x0010 << (irq - LOCOMO_IRQ_START));
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locomo_writel(r, mapbase + LOCOMO_ICR);
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}
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static struct irqchip locomo_chip = {
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.ack = locomo_ack_irq,
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.mask = locomo_mask_irq,
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.unmask = locomo_unmask_irq,
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};
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static void locomo_key_handler(unsigned int irq, struct irqdesc *desc,
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struct pt_regs *regs)
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{
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struct irqdesc *d;
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void *mapbase = get_irq_chipdata(irq);
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if (locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC) & 0x0001) {
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d = irq_desc + LOCOMO_IRQ_KEY_START;
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desc_handle_irq(LOCOMO_IRQ_KEY_START, d, regs);
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}
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}
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static void locomo_key_ack_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
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r &= ~(0x0100 << (irq - LOCOMO_IRQ_KEY_START));
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locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
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}
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static void locomo_key_mask_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
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r &= ~(0x0010 << (irq - LOCOMO_IRQ_KEY_START));
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locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
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}
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static void locomo_key_unmask_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
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r |= (0x0010 << (irq - LOCOMO_IRQ_KEY_START));
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locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
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}
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static struct irqchip locomo_key_chip = {
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.ack = locomo_key_ack_irq,
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.mask = locomo_key_mask_irq,
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.unmask = locomo_key_unmask_irq,
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};
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static void locomo_gpio_handler(unsigned int irq, struct irqdesc *desc,
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struct pt_regs *regs)
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{
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int req, i;
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struct irqdesc *d;
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void *mapbase = get_irq_chipdata(irq);
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req = locomo_readl(mapbase + LOCOMO_GIR) &
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locomo_readl(mapbase + LOCOMO_GPD) &
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0xffff;
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if (req) {
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irq = LOCOMO_IRQ_GPIO_START;
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d = irq_desc + LOCOMO_IRQ_GPIO_START;
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for (i = 0; i <= 15; i++, irq++, d++) {
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if (req & (0x0001 << i)) {
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desc_handle_irq(irq, d, regs);
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}
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}
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}
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}
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static void locomo_gpio_ack_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_GWE);
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r |= (0x0001 << (irq - LOCOMO_IRQ_GPIO_START));
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locomo_writel(r, mapbase + LOCOMO_GWE);
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r = locomo_readl(mapbase + LOCOMO_GIS);
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r &= ~(0x0001 << (irq - LOCOMO_IRQ_GPIO_START));
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locomo_writel(r, mapbase + LOCOMO_GIS);
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r = locomo_readl(mapbase + LOCOMO_GWE);
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r &= ~(0x0001 << (irq - LOCOMO_IRQ_GPIO_START));
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locomo_writel(r, mapbase + LOCOMO_GWE);
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}
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static void locomo_gpio_mask_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_GIE);
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r &= ~(0x0001 << (irq - LOCOMO_IRQ_GPIO_START));
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locomo_writel(r, mapbase + LOCOMO_GIE);
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}
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static void locomo_gpio_unmask_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_GIE);
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r |= (0x0001 << (irq - LOCOMO_IRQ_GPIO_START));
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locomo_writel(r, mapbase + LOCOMO_GIE);
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}
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static struct irqchip locomo_gpio_chip = {
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.ack = locomo_gpio_ack_irq,
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.mask = locomo_gpio_mask_irq,
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.unmask = locomo_gpio_unmask_irq,
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};
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static void locomo_lt_handler(unsigned int irq, struct irqdesc *desc,
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struct pt_regs *regs)
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{
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struct irqdesc *d;
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void *mapbase = get_irq_chipdata(irq);
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if (locomo_readl(mapbase + LOCOMO_LTINT) & 0x0001) {
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d = irq_desc + LOCOMO_IRQ_LT_START;
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desc_handle_irq(LOCOMO_IRQ_LT_START, d, regs);
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}
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}
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static void locomo_lt_ack_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_LTINT);
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r &= ~(0x0100 << (irq - LOCOMO_IRQ_LT_START));
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locomo_writel(r, mapbase + LOCOMO_LTINT);
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}
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static void locomo_lt_mask_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_LTINT);
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r &= ~(0x0010 << (irq - LOCOMO_IRQ_LT_START));
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locomo_writel(r, mapbase + LOCOMO_LTINT);
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}
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static void locomo_lt_unmask_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_LTINT);
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r |= (0x0010 << (irq - LOCOMO_IRQ_LT_START));
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locomo_writel(r, mapbase + LOCOMO_LTINT);
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}
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static struct irqchip locomo_lt_chip = {
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.ack = locomo_lt_ack_irq,
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.mask = locomo_lt_mask_irq,
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.unmask = locomo_lt_unmask_irq,
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};
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static void locomo_spi_handler(unsigned int irq, struct irqdesc *desc,
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struct pt_regs *regs)
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{
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int req, i;
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struct irqdesc *d;
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void *mapbase = get_irq_chipdata(irq);
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req = locomo_readl(mapbase + LOCOMO_SPIIR) & 0x000F;
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if (req) {
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irq = LOCOMO_IRQ_SPI_START;
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d = irq_desc + irq;
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for (i = 0; i <= 3; i++, irq++, d++) {
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if (req & (0x0001 << i)) {
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desc_handle_irq(irq, d, regs);
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}
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}
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}
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}
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static void locomo_spi_ack_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_SPIWE);
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r |= (0x0001 << (irq - LOCOMO_IRQ_SPI_START));
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locomo_writel(r, mapbase + LOCOMO_SPIWE);
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r = locomo_readl(mapbase + LOCOMO_SPIIS);
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r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START));
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locomo_writel(r, mapbase + LOCOMO_SPIIS);
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r = locomo_readl(mapbase + LOCOMO_SPIWE);
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r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START));
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locomo_writel(r, mapbase + LOCOMO_SPIWE);
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}
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static void locomo_spi_mask_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_SPIIE);
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r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START));
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locomo_writel(r, mapbase + LOCOMO_SPIIE);
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}
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static void locomo_spi_unmask_irq(unsigned int irq)
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{
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void *mapbase = get_irq_chipdata(irq);
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unsigned int r;
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r = locomo_readl(mapbase + LOCOMO_SPIIE);
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r |= (0x0001 << (irq - LOCOMO_IRQ_SPI_START));
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locomo_writel(r, mapbase + LOCOMO_SPIIE);
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}
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static struct irqchip locomo_spi_chip = {
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.ack = locomo_spi_ack_irq,
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.mask = locomo_spi_mask_irq,
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.unmask = locomo_spi_unmask_irq,
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};
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static void locomo_setup_irq(struct locomo *lchip)
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{
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int irq;
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void *irqbase = lchip->base;
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/*
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* Install handler for IRQ_LOCOMO_HW.
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*/
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set_irq_type(lchip->irq, IRQT_FALLING);
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set_irq_chipdata(lchip->irq, irqbase);
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set_irq_chained_handler(lchip->irq, locomo_handler);
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/* Install handlers for IRQ_LOCOMO_*_BASE */
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set_irq_chip(IRQ_LOCOMO_KEY_BASE, &locomo_chip);
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set_irq_chipdata(IRQ_LOCOMO_KEY_BASE, irqbase);
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set_irq_chained_handler(IRQ_LOCOMO_KEY_BASE, locomo_key_handler);
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set_irq_flags(IRQ_LOCOMO_KEY_BASE, IRQF_VALID | IRQF_PROBE);
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set_irq_chip(IRQ_LOCOMO_GPIO_BASE, &locomo_chip);
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set_irq_chipdata(IRQ_LOCOMO_GPIO_BASE, irqbase);
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set_irq_chained_handler(IRQ_LOCOMO_GPIO_BASE, locomo_gpio_handler);
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set_irq_flags(IRQ_LOCOMO_GPIO_BASE, IRQF_VALID | IRQF_PROBE);
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set_irq_chip(IRQ_LOCOMO_LT_BASE, &locomo_chip);
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set_irq_chipdata(IRQ_LOCOMO_LT_BASE, irqbase);
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set_irq_chained_handler(IRQ_LOCOMO_LT_BASE, locomo_lt_handler);
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set_irq_flags(IRQ_LOCOMO_LT_BASE, IRQF_VALID | IRQF_PROBE);
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set_irq_chip(IRQ_LOCOMO_SPI_BASE, &locomo_chip);
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set_irq_chipdata(IRQ_LOCOMO_SPI_BASE, irqbase);
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set_irq_chained_handler(IRQ_LOCOMO_SPI_BASE, locomo_spi_handler);
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set_irq_flags(IRQ_LOCOMO_SPI_BASE, IRQF_VALID | IRQF_PROBE);
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/* install handlers for IRQ_LOCOMO_KEY_BASE generated interrupts */
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|
set_irq_chip(LOCOMO_IRQ_KEY_START, &locomo_key_chip);
|
|
set_irq_chipdata(LOCOMO_IRQ_KEY_START, irqbase);
|
|
set_irq_handler(LOCOMO_IRQ_KEY_START, do_edge_IRQ);
|
|
set_irq_flags(LOCOMO_IRQ_KEY_START, IRQF_VALID | IRQF_PROBE);
|
|
|
|
/* install handlers for IRQ_LOCOMO_GPIO_BASE generated interrupts */
|
|
for (irq = LOCOMO_IRQ_GPIO_START; irq < LOCOMO_IRQ_GPIO_START + 16; irq++) {
|
|
set_irq_chip(irq, &locomo_gpio_chip);
|
|
set_irq_chipdata(irq, irqbase);
|
|
set_irq_handler(irq, do_edge_IRQ);
|
|
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
|
|
}
|
|
|
|
/* install handlers for IRQ_LOCOMO_LT_BASE generated interrupts */
|
|
set_irq_chip(LOCOMO_IRQ_LT_START, &locomo_lt_chip);
|
|
set_irq_chipdata(LOCOMO_IRQ_LT_START, irqbase);
|
|
set_irq_handler(LOCOMO_IRQ_LT_START, do_edge_IRQ);
|
|
set_irq_flags(LOCOMO_IRQ_LT_START, IRQF_VALID | IRQF_PROBE);
|
|
|
|
/* install handlers for IRQ_LOCOMO_SPI_BASE generated interrupts */
|
|
for (irq = LOCOMO_IRQ_SPI_START; irq < LOCOMO_IRQ_SPI_START + 3; irq++) {
|
|
set_irq_chip(irq, &locomo_spi_chip);
|
|
set_irq_chipdata(irq, irqbase);
|
|
set_irq_handler(irq, do_edge_IRQ);
|
|
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
|
|
}
|
|
}
|
|
|
|
|
|
static void locomo_dev_release(struct device *_dev)
|
|
{
|
|
struct locomo_dev *dev = LOCOMO_DEV(_dev);
|
|
|
|
kfree(dev);
|
|
}
|
|
|
|
static int
|
|
locomo_init_one_child(struct locomo *lchip, struct locomo_dev_info *info)
|
|
{
|
|
struct locomo_dev *dev;
|
|
int ret;
|
|
|
|
dev = kmalloc(sizeof(struct locomo_dev), GFP_KERNEL);
|
|
if (!dev) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
memset(dev, 0, sizeof(struct locomo_dev));
|
|
|
|
strncpy(dev->dev.bus_id,info->name,sizeof(dev->dev.bus_id));
|
|
/*
|
|
* If the parent device has a DMA mask associated with it,
|
|
* propagate it down to the children.
|
|
*/
|
|
if (lchip->dev->dma_mask) {
|
|
dev->dma_mask = *lchip->dev->dma_mask;
|
|
dev->dev.dma_mask = &dev->dma_mask;
|
|
}
|
|
|
|
dev->devid = info->devid;
|
|
dev->dev.parent = lchip->dev;
|
|
dev->dev.bus = &locomo_bus_type;
|
|
dev->dev.release = locomo_dev_release;
|
|
dev->dev.coherent_dma_mask = lchip->dev->coherent_dma_mask;
|
|
|
|
if (info->offset)
|
|
dev->mapbase = lchip->base + info->offset;
|
|
else
|
|
dev->mapbase = 0;
|
|
dev->length = info->length;
|
|
|
|
memmove(dev->irq, info->irq, sizeof(dev->irq));
|
|
|
|
ret = device_register(&dev->dev);
|
|
if (ret) {
|
|
out:
|
|
kfree(dev);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
struct locomo_save_data {
|
|
u16 LCM_GPO;
|
|
u16 LCM_SPICT;
|
|
u16 LCM_GPE;
|
|
u16 LCM_ASD;
|
|
u16 LCM_SPIMD;
|
|
};
|
|
|
|
static int locomo_suspend(struct device *dev, u32 pm_message_t, u32 level)
|
|
{
|
|
struct locomo *lchip = dev_get_drvdata(dev);
|
|
struct locomo_save_data *save;
|
|
unsigned long flags;
|
|
|
|
if (level != SUSPEND_DISABLE)
|
|
return 0;
|
|
|
|
save = kmalloc(sizeof(struct locomo_save_data), GFP_KERNEL);
|
|
if (!save)
|
|
return -ENOMEM;
|
|
|
|
dev->power.saved_state = (void *) save;
|
|
|
|
spin_lock_irqsave(&lchip->lock, flags);
|
|
|
|
save->LCM_GPO = locomo_readl(lchip->base + LOCOMO_GPO); /* GPIO */
|
|
locomo_writel(0x00, lchip->base + LOCOMO_GPO);
|
|
save->LCM_SPICT = locomo_readl(lchip->base + LOCOMO_SPICT); /* SPI */
|
|
locomo_writel(0x40, lchip->base + LOCOMO_SPICT);
|
|
save->LCM_GPE = locomo_readl(lchip->base + LOCOMO_GPE); /* GPIO */
|
|
locomo_writel(0x00, lchip->base + LOCOMO_GPE);
|
|
save->LCM_ASD = locomo_readl(lchip->base + LOCOMO_ASD); /* ADSTART */
|
|
locomo_writel(0x00, lchip->base + LOCOMO_ASD);
|
|
save->LCM_SPIMD = locomo_readl(lchip->base + LOCOMO_SPIMD); /* SPI */
|
|
locomo_writel(0x3C14, lchip->base + LOCOMO_SPIMD);
|
|
|
|
locomo_writel(0x00, lchip->base + LOCOMO_PAIF);
|
|
locomo_writel(0x00, lchip->base + LOCOMO_DAC);
|
|
locomo_writel(0x00, lchip->base + LOCOMO_BACKLIGHT + LOCOMO_TC);
|
|
|
|
if ( (locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT0) & 0x88) && (locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT1) & 0x88) )
|
|
locomo_writel(0x00, lchip->base + LOCOMO_C32K); /* CLK32 off */
|
|
else
|
|
/* 18MHz already enabled, so no wait */
|
|
locomo_writel(0xc1, lchip->base + LOCOMO_C32K); /* CLK32 on */
|
|
|
|
locomo_writel(0x00, lchip->base + LOCOMO_TADC); /* 18MHz clock off*/
|
|
locomo_writel(0x00, lchip->base + LOCOMO_AUDIO + LOCOMO_ACC); /* 22MHz/24MHz clock off */
|
|
locomo_writel(0x00, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); /* FL */
|
|
|
|
spin_unlock_irqrestore(&lchip->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int locomo_resume(struct device *dev, u32 level)
|
|
{
|
|
struct locomo *lchip = dev_get_drvdata(dev);
|
|
struct locomo_save_data *save;
|
|
unsigned long r;
|
|
unsigned long flags;
|
|
|
|
if (level != RESUME_ENABLE)
|
|
return 0;
|
|
|
|
save = (struct locomo_save_data *) dev->power.saved_state;
|
|
if (!save)
|
|
return 0;
|
|
|
|
spin_lock_irqsave(&lchip->lock, flags);
|
|
|
|
locomo_writel(save->LCM_GPO, lchip->base + LOCOMO_GPO);
|
|
locomo_writel(save->LCM_SPICT, lchip->base + LOCOMO_SPICT);
|
|
locomo_writel(save->LCM_GPE, lchip->base + LOCOMO_GPE);
|
|
locomo_writel(save->LCM_ASD, lchip->base + LOCOMO_ASD);
|
|
locomo_writel(save->LCM_SPIMD, lchip->base + LOCOMO_SPIMD);
|
|
|
|
locomo_writel(0x00, lchip->base + LOCOMO_C32K);
|
|
locomo_writel(0x90, lchip->base + LOCOMO_TADC);
|
|
|
|
locomo_writel(0, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KSC);
|
|
r = locomo_readl(lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC);
|
|
r &= 0xFEFF;
|
|
locomo_writel(r, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC);
|
|
locomo_writel(0x1, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KCMD);
|
|
|
|
spin_unlock_irqrestore(&lchip->lock, flags);
|
|
|
|
dev->power.saved_state = NULL;
|
|
kfree(save);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* locomo_probe - probe for a single LoCoMo chip.
|
|
* @phys_addr: physical address of device.
|
|
*
|
|
* Probe for a LoCoMo chip. This must be called
|
|
* before any other locomo-specific code.
|
|
*
|
|
* Returns:
|
|
* %-ENODEV device not found.
|
|
* %-EBUSY physical address already marked in-use.
|
|
* %0 successful.
|
|
*/
|
|
static int
|
|
__locomo_probe(struct device *me, struct resource *mem, int irq)
|
|
{
|
|
struct locomo *lchip;
|
|
unsigned long r;
|
|
int i, ret = -ENODEV;
|
|
|
|
lchip = kmalloc(sizeof(struct locomo), GFP_KERNEL);
|
|
if (!lchip)
|
|
return -ENOMEM;
|
|
|
|
memset(lchip, 0, sizeof(struct locomo));
|
|
|
|
spin_lock_init(&lchip->lock);
|
|
|
|
lchip->dev = me;
|
|
dev_set_drvdata(lchip->dev, lchip);
|
|
|
|
lchip->phys = mem->start;
|
|
lchip->irq = irq;
|
|
|
|
/*
|
|
* Map the whole region. This also maps the
|
|
* registers for our children.
|
|
*/
|
|
lchip->base = ioremap(mem->start, PAGE_SIZE);
|
|
if (!lchip->base) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
/* locomo initialize */
|
|
locomo_writel(0, lchip->base + LOCOMO_ICR);
|
|
/* KEYBOARD */
|
|
locomo_writel(0, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC);
|
|
|
|
/* GPIO */
|
|
locomo_writel(0, lchip->base + LOCOMO_GPO);
|
|
locomo_writel( (LOCOMO_GPIO(2) | LOCOMO_GPIO(3) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14))
|
|
, lchip->base + LOCOMO_GPE);
|
|
locomo_writel( (LOCOMO_GPIO(2) | LOCOMO_GPIO(3) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14))
|
|
, lchip->base + LOCOMO_GPD);
|
|
locomo_writel(0, lchip->base + LOCOMO_GIE);
|
|
|
|
/* FrontLight */
|
|
locomo_writel(0, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS);
|
|
locomo_writel(0, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALD);
|
|
/* Longtime timer */
|
|
locomo_writel(0, lchip->base + LOCOMO_LTINT);
|
|
/* SPI */
|
|
locomo_writel(0, lchip->base + LOCOMO_SPIIE);
|
|
|
|
locomo_writel(6 + 8 + 320 + 30 - 10, lchip->base + LOCOMO_ASD);
|
|
r = locomo_readl(lchip->base + LOCOMO_ASD);
|
|
r |= 0x8000;
|
|
locomo_writel(r, lchip->base + LOCOMO_ASD);
|
|
|
|
locomo_writel(6 + 8 + 320 + 30 - 10 - 128 + 4, lchip->base + LOCOMO_HSD);
|
|
r = locomo_readl(lchip->base + LOCOMO_HSD);
|
|
r |= 0x8000;
|
|
locomo_writel(r, lchip->base + LOCOMO_HSD);
|
|
|
|
locomo_writel(128 / 8, lchip->base + LOCOMO_HSC);
|
|
|
|
/* XON */
|
|
locomo_writel(0x80, lchip->base + LOCOMO_TADC);
|
|
udelay(1000);
|
|
/* CLK9MEN */
|
|
r = locomo_readl(lchip->base + LOCOMO_TADC);
|
|
r |= 0x10;
|
|
locomo_writel(r, lchip->base + LOCOMO_TADC);
|
|
udelay(100);
|
|
|
|
/* init DAC */
|
|
r = locomo_readl(lchip->base + LOCOMO_DAC);
|
|
r |= LOCOMO_DAC_SCLOEB | LOCOMO_DAC_SDAOEB;
|
|
locomo_writel(r, lchip->base + LOCOMO_DAC);
|
|
|
|
r = locomo_readl(lchip->base + LOCOMO_VER);
|
|
printk(KERN_INFO "LoCoMo Chip: %lu%lu\n", (r >> 8), (r & 0xff));
|
|
|
|
/*
|
|
* The interrupt controller must be initialised before any
|
|
* other device to ensure that the interrupts are available.
|
|
*/
|
|
if (lchip->irq != NO_IRQ)
|
|
locomo_setup_irq(lchip);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(locomo_devices); i++)
|
|
locomo_init_one_child(lchip, &locomo_devices[i]);
|
|
|
|
return 0;
|
|
|
|
out:
|
|
kfree(lchip);
|
|
return ret;
|
|
}
|
|
|
|
static int locomo_remove_child(struct device *dev, void *data)
|
|
{
|
|
device_unregister(dev);
|
|
return 0;
|
|
}
|
|
|
|
static void __locomo_remove(struct locomo *lchip)
|
|
{
|
|
device_for_each_child(lchip->dev, NULL, locomo_remove_child);
|
|
|
|
if (lchip->irq != NO_IRQ) {
|
|
set_irq_chained_handler(lchip->irq, NULL);
|
|
set_irq_data(lchip->irq, NULL);
|
|
}
|
|
|
|
iounmap(lchip->base);
|
|
kfree(lchip);
|
|
}
|
|
|
|
static int locomo_probe(struct device *dev)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
struct resource *mem;
|
|
int irq;
|
|
|
|
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!mem)
|
|
return -EINVAL;
|
|
irq = platform_get_irq(pdev, 0);
|
|
|
|
return __locomo_probe(dev, mem, irq);
|
|
}
|
|
|
|
static int locomo_remove(struct device *dev)
|
|
{
|
|
struct locomo *lchip = dev_get_drvdata(dev);
|
|
|
|
if (lchip) {
|
|
__locomo_remove(lchip);
|
|
dev_set_drvdata(dev, NULL);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Not sure if this should be on the system bus or not yet.
|
|
* We really want some way to register a system device at
|
|
* the per-machine level, and then have this driver pick
|
|
* up the registered devices.
|
|
*/
|
|
static struct device_driver locomo_device_driver = {
|
|
.name = "locomo",
|
|
.bus = &platform_bus_type,
|
|
.probe = locomo_probe,
|
|
.remove = locomo_remove,
|
|
#ifdef CONFIG_PM
|
|
.suspend = locomo_suspend,
|
|
.resume = locomo_resume,
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
* Get the parent device driver (us) structure
|
|
* from a child function device
|
|
*/
|
|
static inline struct locomo *locomo_chip_driver(struct locomo_dev *ldev)
|
|
{
|
|
return (struct locomo *)dev_get_drvdata(ldev->dev.parent);
|
|
}
|
|
|
|
void locomo_gpio_set_dir(struct locomo_dev *ldev, unsigned int bits, unsigned int dir)
|
|
{
|
|
struct locomo *lchip = locomo_chip_driver(ldev);
|
|
unsigned long flags;
|
|
unsigned int r;
|
|
|
|
spin_lock_irqsave(&lchip->lock, flags);
|
|
|
|
r = locomo_readl(lchip->base + LOCOMO_GPD);
|
|
r &= ~bits;
|
|
locomo_writel(r, lchip->base + LOCOMO_GPD);
|
|
|
|
r = locomo_readl(lchip->base + LOCOMO_GPE);
|
|
if (dir)
|
|
r |= bits;
|
|
else
|
|
r &= ~bits;
|
|
locomo_writel(r, lchip->base + LOCOMO_GPE);
|
|
|
|
spin_unlock_irqrestore(&lchip->lock, flags);
|
|
}
|
|
|
|
unsigned int locomo_gpio_read_level(struct locomo_dev *ldev, unsigned int bits)
|
|
{
|
|
struct locomo *lchip = locomo_chip_driver(ldev);
|
|
unsigned long flags;
|
|
unsigned int ret;
|
|
|
|
spin_lock_irqsave(&lchip->lock, flags);
|
|
ret = locomo_readl(lchip->base + LOCOMO_GPL);
|
|
spin_unlock_irqrestore(&lchip->lock, flags);
|
|
|
|
ret &= bits;
|
|
return ret;
|
|
}
|
|
|
|
unsigned int locomo_gpio_read_output(struct locomo_dev *ldev, unsigned int bits)
|
|
{
|
|
struct locomo *lchip = locomo_chip_driver(ldev);
|
|
unsigned long flags;
|
|
unsigned int ret;
|
|
|
|
spin_lock_irqsave(&lchip->lock, flags);
|
|
ret = locomo_readl(lchip->base + LOCOMO_GPO);
|
|
spin_unlock_irqrestore(&lchip->lock, flags);
|
|
|
|
ret &= bits;
|
|
return ret;
|
|
}
|
|
|
|
void locomo_gpio_write(struct locomo_dev *ldev, unsigned int bits, unsigned int set)
|
|
{
|
|
struct locomo *lchip = locomo_chip_driver(ldev);
|
|
unsigned long flags;
|
|
unsigned int r;
|
|
|
|
spin_lock_irqsave(&lchip->lock, flags);
|
|
|
|
r = locomo_readl(lchip->base + LOCOMO_GPO);
|
|
if (set)
|
|
r |= bits;
|
|
else
|
|
r &= ~bits;
|
|
locomo_writel(r, lchip->base + LOCOMO_GPO);
|
|
|
|
spin_unlock_irqrestore(&lchip->lock, flags);
|
|
}
|
|
|
|
static void locomo_m62332_sendbit(void *mapbase, int bit)
|
|
{
|
|
unsigned int r;
|
|
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r &= ~(LOCOMO_DAC_SCLOEB);
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */
|
|
udelay(DAC_DATA_HOLD_TIME); /* 300 nsec */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r &= ~(LOCOMO_DAC_SCLOEB);
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */
|
|
udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */
|
|
|
|
if (bit & 1) {
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r |= LOCOMO_DAC_SDAOEB;
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */
|
|
} else {
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r &= ~(LOCOMO_DAC_SDAOEB);
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */
|
|
}
|
|
|
|
udelay(DAC_DATA_SETUP_TIME); /* 250 nsec */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r |= LOCOMO_DAC_SCLOEB;
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */
|
|
udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.0 usec */
|
|
}
|
|
|
|
void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int channel)
|
|
{
|
|
struct locomo *lchip = locomo_chip_driver(ldev);
|
|
int i;
|
|
unsigned char data;
|
|
unsigned int r;
|
|
void *mapbase = lchip->base;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&lchip->lock, flags);
|
|
|
|
/* Start */
|
|
udelay(DAC_BUS_FREE_TIME); /* 5.0 usec */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r |= LOCOMO_DAC_SCLOEB | LOCOMO_DAC_SDAOEB;
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */
|
|
udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.0 usec */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r &= ~(LOCOMO_DAC_SDAOEB);
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_START_HOLD_TIME); /* 5.0 usec */
|
|
udelay(DAC_DATA_HOLD_TIME); /* 300 nsec */
|
|
|
|
/* Send slave address and W bit (LSB is W bit) */
|
|
data = (M62332_SLAVE_ADDR << 1) | M62332_W_BIT;
|
|
for (i = 1; i <= 8; i++) {
|
|
locomo_m62332_sendbit(mapbase, data >> (8 - i));
|
|
}
|
|
|
|
/* Check A bit */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r &= ~(LOCOMO_DAC_SCLOEB);
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */
|
|
udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r &= ~(LOCOMO_DAC_SDAOEB);
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r |= LOCOMO_DAC_SCLOEB;
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */
|
|
udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.7 usec */
|
|
if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) { /* High is error */
|
|
printk(KERN_WARNING "locomo: m62332_senddata Error 1\n");
|
|
return;
|
|
}
|
|
|
|
/* Send Sub address (LSB is channel select) */
|
|
/* channel = 0 : ch1 select */
|
|
/* = 1 : ch2 select */
|
|
data = M62332_SUB_ADDR + channel;
|
|
for (i = 1; i <= 8; i++) {
|
|
locomo_m62332_sendbit(mapbase, data >> (8 - i));
|
|
}
|
|
|
|
/* Check A bit */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r &= ~(LOCOMO_DAC_SCLOEB);
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */
|
|
udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r &= ~(LOCOMO_DAC_SDAOEB);
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r |= LOCOMO_DAC_SCLOEB;
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */
|
|
udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.7 usec */
|
|
if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) { /* High is error */
|
|
printk(KERN_WARNING "locomo: m62332_senddata Error 2\n");
|
|
return;
|
|
}
|
|
|
|
/* Send DAC data */
|
|
for (i = 1; i <= 8; i++) {
|
|
locomo_m62332_sendbit(mapbase, dac_data >> (8 - i));
|
|
}
|
|
|
|
/* Check A bit */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r &= ~(LOCOMO_DAC_SCLOEB);
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */
|
|
udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r &= ~(LOCOMO_DAC_SDAOEB);
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r |= LOCOMO_DAC_SCLOEB;
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */
|
|
udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.7 usec */
|
|
if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) { /* High is error */
|
|
printk(KERN_WARNING "locomo: m62332_senddata Error 3\n");
|
|
return;
|
|
}
|
|
|
|
/* stop */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r &= ~(LOCOMO_DAC_SCLOEB);
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */
|
|
udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r |= LOCOMO_DAC_SCLOEB;
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */
|
|
udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4 usec */
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r |= LOCOMO_DAC_SDAOEB;
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */
|
|
udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4 usec */
|
|
|
|
r = locomo_readl(mapbase + LOCOMO_DAC);
|
|
r |= LOCOMO_DAC_SCLOEB | LOCOMO_DAC_SDAOEB;
|
|
locomo_writel(r, mapbase + LOCOMO_DAC);
|
|
udelay(DAC_LOW_SETUP_TIME); /* 1000 nsec */
|
|
udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */
|
|
|
|
spin_unlock_irqrestore(&lchip->lock, flags);
|
|
}
|
|
|
|
/*
|
|
* LoCoMo "Register Access Bus."
|
|
*
|
|
* We model this as a regular bus type, and hang devices directly
|
|
* off this.
|
|
*/
|
|
static int locomo_match(struct device *_dev, struct device_driver *_drv)
|
|
{
|
|
struct locomo_dev *dev = LOCOMO_DEV(_dev);
|
|
struct locomo_driver *drv = LOCOMO_DRV(_drv);
|
|
|
|
return dev->devid == drv->devid;
|
|
}
|
|
|
|
static int locomo_bus_suspend(struct device *dev, pm_message_t state)
|
|
{
|
|
struct locomo_dev *ldev = LOCOMO_DEV(dev);
|
|
struct locomo_driver *drv = LOCOMO_DRV(dev->driver);
|
|
int ret = 0;
|
|
|
|
if (drv && drv->suspend)
|
|
ret = drv->suspend(ldev, state);
|
|
return ret;
|
|
}
|
|
|
|
static int locomo_bus_resume(struct device *dev)
|
|
{
|
|
struct locomo_dev *ldev = LOCOMO_DEV(dev);
|
|
struct locomo_driver *drv = LOCOMO_DRV(dev->driver);
|
|
int ret = 0;
|
|
|
|
if (drv && drv->resume)
|
|
ret = drv->resume(ldev);
|
|
return ret;
|
|
}
|
|
|
|
static int locomo_bus_probe(struct device *dev)
|
|
{
|
|
struct locomo_dev *ldev = LOCOMO_DEV(dev);
|
|
struct locomo_driver *drv = LOCOMO_DRV(dev->driver);
|
|
int ret = -ENODEV;
|
|
|
|
if (drv->probe)
|
|
ret = drv->probe(ldev);
|
|
return ret;
|
|
}
|
|
|
|
static int locomo_bus_remove(struct device *dev)
|
|
{
|
|
struct locomo_dev *ldev = LOCOMO_DEV(dev);
|
|
struct locomo_driver *drv = LOCOMO_DRV(dev->driver);
|
|
int ret = 0;
|
|
|
|
if (drv->remove)
|
|
ret = drv->remove(ldev);
|
|
return ret;
|
|
}
|
|
|
|
struct bus_type locomo_bus_type = {
|
|
.name = "locomo-bus",
|
|
.match = locomo_match,
|
|
.suspend = locomo_bus_suspend,
|
|
.resume = locomo_bus_resume,
|
|
};
|
|
|
|
int locomo_driver_register(struct locomo_driver *driver)
|
|
{
|
|
driver->drv.probe = locomo_bus_probe;
|
|
driver->drv.remove = locomo_bus_remove;
|
|
driver->drv.bus = &locomo_bus_type;
|
|
return driver_register(&driver->drv);
|
|
}
|
|
|
|
void locomo_driver_unregister(struct locomo_driver *driver)
|
|
{
|
|
driver_unregister(&driver->drv);
|
|
}
|
|
|
|
static int __init locomo_init(void)
|
|
{
|
|
int ret = bus_register(&locomo_bus_type);
|
|
if (ret == 0)
|
|
driver_register(&locomo_device_driver);
|
|
return ret;
|
|
}
|
|
|
|
static void __exit locomo_exit(void)
|
|
{
|
|
driver_unregister(&locomo_device_driver);
|
|
bus_unregister(&locomo_bus_type);
|
|
}
|
|
|
|
module_init(locomo_init);
|
|
module_exit(locomo_exit);
|
|
|
|
MODULE_DESCRIPTION("Sharp LoCoMo core driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>");
|
|
|
|
EXPORT_SYMBOL(locomo_driver_register);
|
|
EXPORT_SYMBOL(locomo_driver_unregister);
|
|
EXPORT_SYMBOL(locomo_gpio_set_dir);
|
|
EXPORT_SYMBOL(locomo_gpio_read_level);
|
|
EXPORT_SYMBOL(locomo_gpio_read_output);
|
|
EXPORT_SYMBOL(locomo_gpio_write);
|
|
EXPORT_SYMBOL(locomo_m62332_senddata);
|