diff options
Diffstat (limited to 'drivers/staging/meilhaus/me8200_di.c')
| -rw-r--r-- | drivers/staging/meilhaus/me8200_di.c | 832 |
1 files changed, 0 insertions, 832 deletions
diff --git a/drivers/staging/meilhaus/me8200_di.c b/drivers/staging/meilhaus/me8200_di.c deleted file mode 100644 index fd1af0f..0000000 --- a/drivers/staging/meilhaus/me8200_di.c +++ /dev/null @@ -1,832 +0,0 @@ -/** - * @file me8200_di.c - * - * @brief ME-8200 digital input subdevice instance. - * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) - * @author Guenter Gebhardt - * @author Krzysztof Gantzke (k.gantzke@meilhaus.de) - */ - -/* - * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) - * - * This file is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#ifndef __KERNEL__ -# define __KERNEL__ -#endif - -///Includes -#include <linux/module.h> - -#include <linux/slab.h> -#include <linux/spinlock.h> -#include <linux/io.h> -#include <linux/types.h> -#include <linux/interrupt.h> - -#include "medefines.h" -#include "meerror.h" - -#include "meids.h" -#include "medebug.h" -#include "me8200_reg.h" -#include "me8200_di_reg.h" -#include "me8200_di.h" - -/// Defines -static void me8200_di_destructor(struct me_subdevice *subdevice); -static int me8200_di_io_irq_start(me_subdevice_t *subdevice, - struct file *filep, - int channel, - int irq_source, - int irq_edge, int irq_arg, int flags); -static int me8200_di_io_irq_wait(me_subdevice_t *subdevice, - struct file *filep, - int channel, - int *irq_count, - int *value, int time_out, int flags); -static int me8200_di_io_irq_stop(me_subdevice_t *subdevice, - struct file *filep, int channel, int flags); -static int me8200_di_io_single_config(me_subdevice_t *subdevice, - struct file *filep, - int channel, - int single_config, - int ref, - int trig_chan, - int trig_type, int trig_edge, int flags); -static int me8200_di_io_single_read(me_subdevice_t *subdevice, - struct file *filep, - int channel, - int *value, int time_out, int flags); -static int me8200_di_io_reset_subdevice(struct me_subdevice *subdevice, - struct file *filep, int flags); -static int me8200_di_query_number_channels(me_subdevice_t *subdevice, - int *number); -static int me8200_di_query_subdevice_type(me_subdevice_t *subdevice, - int *type, int *subtype); -static int me8200_di_query_subdevice_caps(me_subdevice_t *subdevice, - int *caps); -static irqreturn_t me8200_isr(int irq, void *dev_id); -static irqreturn_t me8200_isr_EX(int irq, void *dev_id); -static void me8200_di_check_version(me8200_di_subdevice_t *instance, - unsigned long addr); - -///Functions -static int me8200_di_io_irq_start(me_subdevice_t *subdevice, - struct file *filep, - int channel, - int irq_source, - int irq_edge, int irq_arg, int flags) -{ - me8200_di_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - volatile uint8_t tmp; - unsigned long status; - - PDEBUG("executed.\n"); - - instance = (me8200_di_subdevice_t *) subdevice; - - if (irq_source == ME_IRQ_SOURCE_DIO_PATTERN) { - if (flags & - ~(ME_IO_IRQ_START_PATTERN_FILTERING | - ME_IO_IRQ_START_DIO_BYTE)) { - PERROR("Invalid flag specified.\n"); - return ME_ERRNO_INVALID_FLAGS; - } - - if (irq_edge != ME_IRQ_EDGE_NOT_USED) { - PERROR("Invalid irq edge specified.\n"); - return ME_ERRNO_INVALID_IRQ_EDGE; - } - } else if (irq_source == ME_IRQ_SOURCE_DIO_MASK) { - if (flags & - ~(ME_IO_IRQ_START_EXTENDED_STATUS | - ME_IO_IRQ_START_DIO_BYTE)) { - PERROR("Invalid flag specified.\n"); - return ME_ERRNO_INVALID_FLAGS; - } - - if ((irq_edge != ME_IRQ_EDGE_RISING) - && (irq_edge != ME_IRQ_EDGE_FALLING) - && (irq_edge != ME_IRQ_EDGE_ANY)) { - PERROR("Invalid irq edge specified.\n"); - return ME_ERRNO_INVALID_IRQ_EDGE; - } - - if (!(irq_arg & 0xFF)) { - PERROR("No mask specified.\n"); - return ME_ERRNO_INVALID_IRQ_ARG; - } - } else { - PERROR("Invalid irq source specified.\n"); - return ME_ERRNO_INVALID_IRQ_SOURCE; - } - - if (channel) { - PERROR("Invalid channel specified.\n"); - return ME_ERRNO_INVALID_CHANNEL; - } - - ME_SUBDEVICE_ENTER; - - spin_lock_irqsave(&instance->subdevice_lock, status); - if (irq_source == ME_IRQ_SOURCE_DIO_PATTERN) { - outb(irq_arg, instance->compare_reg); - PDEBUG_REG("compare_reg outb(0x%lX+0x%lX)=0x%x\n", - instance->reg_base, - instance->compare_reg - instance->reg_base, irq_arg); - outb(0xFF, instance->mask_reg); - PDEBUG_REG("mask_reg outb(0x%lX+0x%lX)=0x%x\n", - instance->reg_base, - instance->mask_reg - instance->reg_base, 0xff); - instance->compare_value = irq_arg; - instance->filtering_flag = - (flags & ME_IO_IRQ_START_PATTERN_FILTERING) ? 1 : 0; - } - if (irq_source == ME_IRQ_SOURCE_DIO_MASK) { - outb(irq_arg, instance->mask_reg); - PDEBUG_REG("mask_reg outb(0x%lX+0x%lX)=0x%x\n", - instance->reg_base, - instance->mask_reg - instance->reg_base, irq_arg); - instance->filtering_flag = 0; - } - - spin_lock(instance->irq_mode_lock); - tmp = inb(instance->irq_mode_reg); - tmp &= - ~(ME8200_IRQ_MODE_MASK << - (ME8200_IRQ_MODE_DI_SHIFT * instance->di_idx)); - if (irq_source == ME_IRQ_SOURCE_DIO_PATTERN) { - tmp |= - ME8200_IRQ_MODE_MASK_COMPARE << (ME8200_IRQ_MODE_DI_SHIFT * - instance->di_idx); - } - - if (irq_source == ME_IRQ_SOURCE_DIO_MASK) { - tmp |= - ME8200_IRQ_MODE_MASK_MASK << (ME8200_IRQ_MODE_DI_SHIFT * - instance->di_idx); - } - outb(tmp, instance->irq_mode_reg); - PDEBUG_REG("irq_mode_reg outb(0x%lX+0x%lX)=0x%x\n", instance->reg_base, - instance->irq_mode_reg - instance->reg_base, tmp); - spin_unlock(instance->irq_mode_lock); - - spin_lock(instance->irq_ctrl_lock); - tmp = inb(instance->irq_ctrl_reg); - tmp |= - (ME8200_DI_IRQ_CTRL_BIT_CLEAR << - (ME8200_DI_IRQ_CTRL_SHIFT * instance->di_idx)); - tmp |= - ME8200_DI_IRQ_CTRL_BIT_ENABLE << (ME8200_DI_IRQ_CTRL_SHIFT * - instance->di_idx); - - if (irq_source == ME_IRQ_SOURCE_DIO_MASK) { - tmp &= - ~(ME8200_DI_IRQ_CTRL_MASK_EDGE << - (ME8200_DI_IRQ_CTRL_SHIFT * instance->di_idx)); - if (irq_edge == ME_IRQ_EDGE_RISING) { - tmp |= - ME8200_DI_IRQ_CTRL_MASK_EDGE_RISING << - (ME8200_DI_IRQ_CTRL_SHIFT * instance->di_idx); - } else if (irq_edge == ME_IRQ_EDGE_FALLING) { - tmp |= - ME8200_DI_IRQ_CTRL_MASK_EDGE_FALLING << - (ME8200_DI_IRQ_CTRL_SHIFT * instance->di_idx); - } else if (irq_edge == ME_IRQ_EDGE_ANY) { - tmp |= - ME8200_DI_IRQ_CTRL_MASK_EDGE_ANY << - (ME8200_DI_IRQ_CTRL_SHIFT * instance->di_idx); - } - } - outb(tmp, instance->irq_ctrl_reg); - PDEBUG_REG("irq_ctrl_reg outb(0x%lX+0x%lX)=0x%x\n", instance->reg_base, - instance->irq_ctrl_reg - instance->reg_base, tmp); - tmp &= - ~(ME8200_DI_IRQ_CTRL_BIT_CLEAR << - (ME8200_DI_IRQ_CTRL_SHIFT * instance->di_idx)); - outb(tmp, instance->irq_ctrl_reg); - PDEBUG_REG("irq_ctrl_reg outb(0x%lX+0x%lX)=0x%x\n", instance->reg_base, - instance->irq_ctrl_reg - instance->reg_base, tmp); - - instance->line_value = inb(instance->port_reg); - spin_unlock(instance->irq_ctrl_lock); - - instance->rised = 0; - instance->status_value = 0; - instance->status_value_edges = 0; - instance->status_flag = flags & ME_IO_IRQ_START_EXTENDED_STATUS; - spin_unlock_irqrestore(&instance->subdevice_lock, status); - ME_SUBDEVICE_EXIT; - - return err; -} - -static int me8200_di_io_irq_wait(me_subdevice_t *subdevice, - struct file *filep, - int channel, - int *irq_count, - int *value, int time_out, int flags) -{ - me8200_di_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - long t = 0; - unsigned long cpu_flags; - int count; - - PDEBUG("executed.\n"); - PDEVELOP("PID: %d.\n", current->pid); - - instance = (me8200_di_subdevice_t *) subdevice; - - if (flags & - ~(ME_IO_IRQ_WAIT_NORMAL_STATUS | ME_IO_IRQ_WAIT_EXTENDED_STATUS)) { - PERROR("Invalid flag specified.\n"); - return ME_ERRNO_INVALID_FLAGS; - } - - if (channel) { - PERROR("Invalid channel specified.\n"); - return ME_ERRNO_INVALID_CHANNEL; - } - - if (time_out < 0) { - PERROR("Invalid time_out specified.\n"); - return ME_ERRNO_INVALID_TIMEOUT; - } - - if (time_out) { - t = (time_out * HZ) / 1000; - - if (t == 0) - t = 1; - } - - ME_SUBDEVICE_ENTER; - - if (instance->rised <= 0) { - instance->rised = 0; - count = instance->count; - - if (time_out) { - t = wait_event_interruptible_timeout(instance-> - wait_queue, - ((count != - instance->count) - || (instance-> - rised < 0)), - t); -// t = wait_event_interruptible_timeout(instance->wait_queue, (instance->rised != 0), t); - if (t == 0) { - PERROR("Wait on interrupt timed out.\n"); - err = ME_ERRNO_TIMEOUT; - } - } else { - wait_event_interruptible(instance->wait_queue, - ((count != instance->count) - || (instance->rised < 0))); -// wait_event_interruptible(instance->wait_queue, (instance->rised != 0)); - } - - if (instance->rised < 0) { - PERROR("Wait on interrupt aborted by user.\n"); - err = ME_ERRNO_CANCELLED; - } - } - - if (signal_pending(current)) { - PERROR("Wait on interrupt aborted by signal.\n"); - err = ME_ERRNO_SIGNAL; - } - - spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); - *irq_count = instance->count; - if (!err) { - if (flags & ME_IO_IRQ_WAIT_NORMAL_STATUS) { - *value = instance->status_value; - } else if (flags & ME_IO_IRQ_WAIT_EXTENDED_STATUS) { - *value = instance->status_value_edges; - } else { // Use default - if (!instance->status_flag) { - *value = instance->status_value; - } else { - *value = instance->status_value_edges; - } - } - instance->rised = 0; -/* - instance->status_value = 0; - instance->status_value_edges = 0; -*/ - } else { - *value = 0; - } - spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); - - ME_SUBDEVICE_EXIT; - - return err; -} - -static int me8200_di_io_irq_stop(me_subdevice_t *subdevice, - struct file *filep, int channel, int flags) -{ - me8200_di_subdevice_t *instance; - uint8_t tmp; - unsigned long status; - - PDEBUG("executed.\n"); - - instance = (me8200_di_subdevice_t *) subdevice; - - if (flags) { - PERROR("Invalid flag specified.\n"); - return ME_ERRNO_INVALID_FLAGS; - } - - if (channel) { - PERROR("Invalid channel specified.\n"); - return ME_ERRNO_INVALID_CHANNEL; - } - - ME_SUBDEVICE_ENTER spin_lock_irqsave(&instance->subdevice_lock, status); - spin_lock(instance->irq_ctrl_lock); - tmp = inb(instance->irq_ctrl_reg); - tmp |= - (ME8200_DI_IRQ_CTRL_BIT_ENABLE << - (ME8200_DI_IRQ_CTRL_SHIFT * instance->di_idx)); - outb(tmp, instance->irq_ctrl_reg); - PDEBUG_REG("irq_ctrl_reg outb(0x%lX+0x%lX)=0x%x\n", instance->reg_base, - instance->irq_ctrl_reg - instance->reg_base, tmp); - tmp &= - ~(ME8200_DI_IRQ_CTRL_BIT_ENABLE << - (ME8200_DI_IRQ_CTRL_SHIFT * instance->di_idx)); - tmp |= - (ME8200_DI_IRQ_CTRL_BIT_CLEAR << - (ME8200_DI_IRQ_CTRL_SHIFT * instance->di_idx)); -// tmp &= ~(ME8200_DI_IRQ_CTRL_BIT_CLEAR << (ME8200_DI_IRQ_CTRL_SHIFT * instance->di_idx)); - outb(tmp, instance->irq_ctrl_reg); - PDEBUG_REG("irq_ctrl_reg outb(0x%lX+0x%lX)=0x%x\n", instance->reg_base, - instance->irq_ctrl_reg - instance->reg_base, tmp); - spin_unlock(instance->irq_ctrl_lock); - - instance->rised = -1; - instance->status_value = 0; - instance->status_value_edges = 0; - instance->filtering_flag = 0; - spin_unlock_irqrestore(&instance->subdevice_lock, status); - wake_up_interruptible_all(&instance->wait_queue); - - ME_SUBDEVICE_EXIT; - - return ME_ERRNO_SUCCESS; -} - -static int me8200_di_io_single_config(me_subdevice_t *subdevice, - struct file *filep, - int channel, - int single_config, - int ref, - int trig_chan, - int trig_type, int trig_edge, int flags) -{ - me8200_di_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - unsigned long status; - - PDEBUG("executed.\n"); - - instance = (me8200_di_subdevice_t *) subdevice; - - ME_SUBDEVICE_ENTER; - - spin_lock_irqsave(&instance->subdevice_lock, status); - - switch (flags) { - case ME_IO_SINGLE_CONFIG_NO_FLAGS: - case ME_IO_SINGLE_CONFIG_DIO_BYTE: - if (channel == 0) { - if (single_config == ME_SINGLE_CONFIG_DIO_INPUT) { - } else { - PERROR("Invalid port direction specified.\n"); - err = ME_ERRNO_INVALID_SINGLE_CONFIG; - } - } else { - PERROR("Invalid channel number.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - default: - PERROR("Invalid flags specified.\n"); - err = ME_ERRNO_INVALID_FLAGS; - } - - spin_unlock_irqrestore(&instance->subdevice_lock, status); - - ME_SUBDEVICE_EXIT; - - return err; -} - -static int me8200_di_io_single_read(me_subdevice_t *subdevice, - struct file *filep, - int channel, - int *value, int time_out, int flags) -{ - me8200_di_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - unsigned long status; - - PDEBUG("executed.\n"); - - instance = (me8200_di_subdevice_t *) subdevice; - - ME_SUBDEVICE_ENTER; - - spin_lock_irqsave(&instance->subdevice_lock, status); - - switch (flags) { - case ME_IO_SINGLE_TYPE_DIO_BIT: - if ((channel >= 0) && (channel < 8)) { - *value = inb(instance->port_reg) & (0x1 << channel); - } else { - PERROR("Invalid bit number specified.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - case ME_IO_SINGLE_NO_FLAGS: - case ME_IO_SINGLE_TYPE_DIO_BYTE: - if (channel == 0) { - *value = inb(instance->port_reg); - } else { - PERROR("Invalid channel number.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - default: - PERROR("Invalid flags specified.\n"); - err = ME_ERRNO_INVALID_FLAGS; - } - - spin_unlock_irqrestore(&instance->subdevice_lock, status); - - ME_SUBDEVICE_EXIT; - - return err; -} - -static int me8200_di_io_reset_subdevice(struct me_subdevice *subdevice, - struct file *filep, int flags) -{ - me8200_di_subdevice_t *instance = (me8200_di_subdevice_t *) subdevice; - - PDEBUG("executed.\n"); - - if (flags) { - PERROR("Invalid flag specified.\n"); - return ME_ERRNO_INVALID_FLAGS; - } - - instance->count = 0; - return me8200_di_io_irq_stop(subdevice, filep, 0, 0); -} - -static int me8200_di_query_number_channels(me_subdevice_t *subdevice, - int *number) -{ - PDEBUG("executed.\n"); - *number = 8; - return ME_ERRNO_SUCCESS; -} - -static int me8200_di_query_subdevice_type(me_subdevice_t *subdevice, - int *type, int *subtype) -{ - PDEBUG("executed.\n"); - *type = ME_TYPE_DI; - *subtype = ME_SUBTYPE_SINGLE; - return ME_ERRNO_SUCCESS; -} - -static int me8200_di_query_subdevice_caps(me_subdevice_t *subdevice, int *caps) -{ - PDEBUG("executed.\n"); - *caps = - ME_CAPS_DIO_BIT_PATTERN_IRQ | - ME_CAPS_DIO_BIT_MASK_IRQ_EDGE_RISING | - ME_CAPS_DIO_BIT_MASK_IRQ_EDGE_FALLING | - ME_CAPS_DIO_BIT_MASK_IRQ_EDGE_ANY; - return ME_ERRNO_SUCCESS; -} - -static irqreturn_t me8200_isr(int irq, void *dev_id) -{ - me8200_di_subdevice_t *instance; - uint8_t ctrl; - uint8_t irq_status; - uint8_t line_value = 0; - uint8_t line_status = 0; - uint32_t status_val = 0; - - instance = (me8200_di_subdevice_t *) dev_id; - - if (irq != instance->irq) { - PERROR("Incorrect interrupt num: %d.\n", irq); - return IRQ_NONE; - } - - irq_status = inb(instance->irq_status_reg); - if (!irq_status) { - PINFO - ("%ld Shared interrupt. %s(): idx=%d irq_status_reg=0x%04X\n", - jiffies, __func__, instance->di_idx, irq_status); - return IRQ_NONE; - } - - PDEBUG("executed.\n"); - - spin_lock(&instance->subdevice_lock); - spin_lock(instance->irq_ctrl_lock); - ctrl = inb(instance->irq_ctrl_reg); - ctrl |= - ME8200_DI_IRQ_CTRL_BIT_CLEAR << (ME8200_DI_IRQ_CTRL_SHIFT * - instance->di_idx); - outb(ctrl, instance->irq_ctrl_reg); - PDEBUG_REG("irq_ctrl_reg outb(0x%lX+0x%lX)=0x%x\n", instance->reg_base, - instance->irq_ctrl_reg - instance->reg_base, ctrl); - ctrl &= - ~(ME8200_DI_IRQ_CTRL_BIT_CLEAR << - (ME8200_DI_IRQ_CTRL_SHIFT * instance->di_idx)); - outb(ctrl, instance->irq_ctrl_reg); - PDEBUG_REG("irq_ctrl_reg outb(0x%lX+0x%lX)=0x%x\n", instance->reg_base, - instance->irq_ctrl_reg - instance->reg_base, ctrl); - - line_value = inb(instance->port_reg); - spin_unlock(instance->irq_ctrl_lock); - - line_status = ((uint8_t) instance->line_value ^ line_value); - - // Make extended information. - status_val |= (0x00FF & (~(uint8_t) instance->line_value & line_value)) << 16; //Raise - status_val |= (0x00FF & ((uint8_t) instance->line_value & ~line_value)); //Fall - - instance->line_value = (int)line_value; - - if (instance->rised == 0) { - instance->status_value = irq_status | line_status; - instance->status_value_edges = status_val; - } else { - instance->status_value |= irq_status | line_status; - instance->status_value_edges |= status_val; - } - - if (instance->filtering_flag) { // For compare mode only. - if (instance->compare_value == instance->line_value) { - instance->rised = 1; - instance->count++; - } - } else { - instance->rised = 1; - instance->count++; - } - spin_unlock(&instance->subdevice_lock); - - spin_unlock(&instance->subdevice_lock); - - wake_up_interruptible_all(&instance->wait_queue); - - return IRQ_HANDLED; -} - -static irqreturn_t me8200_isr_EX(int irq, void *dev_id) -{ - me8200_di_subdevice_t *instance; - uint8_t irq_status = 0; - uint16_t irq_status_EX = 0; - uint32_t status_val = 0; - int i, j; - - instance = (me8200_di_subdevice_t *) dev_id; - - if (irq != instance->irq) { - PERROR("Incorrect interrupt num: %d.\n", irq); - return IRQ_NONE; - } - - PDEBUG("executed.\n"); - - //Reset latches. Copy status to extended registers. - irq_status = inb(instance->irq_status_reg); - PDEBUG_REG("idx=%d irq_status_reg=0x%02X\n", instance->di_idx, - irq_status); - - if (!irq_status) { - PINFO - ("%ld Shared interrupt. %s(): idx=%d irq_status_reg=0x%04X\n", - jiffies, __func__, instance->di_idx, irq_status); - return IRQ_NONE; - } - - irq_status_EX = inb(instance->irq_status_low_reg); - irq_status_EX |= (inb(instance->irq_status_high_reg) << 8); - - PDEVELOP("EXTENDED REG: 0x%04x\n", irq_status_EX); - instance->line_value = inb(instance->port_reg); - - // Format extended information. - for (i = 0, j = 0; i < 8; i++, j += 2) { - status_val |= ((0x01 << j) & irq_status_EX) >> (j - i); //Fall - status_val |= ((0x01 << (j + 1)) & irq_status_EX) << (15 - j + i); //Raise - } - - spin_lock(&instance->subdevice_lock); - if (instance->rised == 0) { - instance->status_value = irq_status; - instance->status_value_edges = status_val; - } else { - instance->status_value |= irq_status; - instance->status_value_edges |= status_val; - } - - if (instance->filtering_flag) { // For compare mode only. - if (instance->compare_value == instance->line_value) { - instance->rised = 1; - instance->count++; - } - } else { - instance->rised = 1; - instance->count++; - } - spin_unlock(&instance->subdevice_lock); - - wake_up_interruptible_all(&instance->wait_queue); - - return IRQ_HANDLED; -} - -static void me8200_di_destructor(struct me_subdevice *subdevice) -{ - me8200_di_subdevice_t *instance; - - PDEBUG("executed.\n"); - - instance = (me8200_di_subdevice_t *) subdevice; - - free_irq(instance->irq, (void *)instance); - me_subdevice_deinit(&instance->base); - kfree(instance); -} - -me8200_di_subdevice_t *me8200_di_constructor(uint32_t me8200_regbase, - unsigned int di_idx, - int irq, - spinlock_t *irq_ctrl_lock, - spinlock_t *irq_mode_lock) -{ - me8200_di_subdevice_t *subdevice; - int err; - - PDEBUG("executed.\n"); - - /* Allocate memory for subdevice instance */ - subdevice = kmalloc(sizeof(me8200_di_subdevice_t), GFP_KERNEL); - - if (!subdevice) { - PERROR("Cannot get memory for subdevice instance.\n"); - return NULL; - } - - memset(subdevice, 0, sizeof(me8200_di_subdevice_t)); - - /* Initialize subdevice base class */ - err = me_subdevice_init(&subdevice->base); - - if (err) { - PERROR("Cannot initialize subdevice base class instance.\n"); - kfree(subdevice); - return NULL; - } - // Check firmware version. - me8200_di_check_version(subdevice, - me8200_regbase + ME8200_FIRMWARE_VERSION_REG); - - // Initialize spin locks. - spin_lock_init(&subdevice->subdevice_lock); - - subdevice->irq_ctrl_lock = irq_ctrl_lock; - subdevice->irq_mode_lock = irq_mode_lock; - - /* Save the subdevice index. */ - subdevice->di_idx = di_idx; - - /* Initialize registers */ - if (di_idx == 0) { - subdevice->port_reg = me8200_regbase + ME8200_DI_PORT_0_REG; - subdevice->mask_reg = me8200_regbase + ME8200_DI_MASK_0_REG; - subdevice->compare_reg = - me8200_regbase + ME8200_DI_COMPARE_0_REG; - subdevice->irq_status_reg = - me8200_regbase + ME8200_DI_CHANGE_0_REG; - - subdevice->irq_status_low_reg = - me8200_regbase + ME8200_DI_EXTEND_CHANGE_0_LOW_REG; - subdevice->irq_status_high_reg = - me8200_regbase + ME8200_DI_EXTEND_CHANGE_0_HIGH_REG; - } else if (di_idx == 1) { - subdevice->port_reg = me8200_regbase + ME8200_DI_PORT_1_REG; - subdevice->mask_reg = me8200_regbase + ME8200_DI_MASK_1_REG; - subdevice->compare_reg = - me8200_regbase + ME8200_DI_COMPARE_1_REG; - subdevice->irq_status_reg = - me8200_regbase + ME8200_DI_CHANGE_1_REG; - - subdevice->irq_status_low_reg = - me8200_regbase + ME8200_DI_EXTEND_CHANGE_1_LOW_REG; - subdevice->irq_status_high_reg = - me8200_regbase + ME8200_DI_EXTEND_CHANGE_1_HIGH_REG; - } else { - PERROR("Wrong subdevice idx=%d.\n", di_idx); - kfree(subdevice); - return NULL; - } - subdevice->irq_ctrl_reg = me8200_regbase + ME8200_DI_IRQ_CTRL_REG; - subdevice->irq_mode_reg = me8200_regbase + ME8200_IRQ_MODE_REG; -#ifdef MEDEBUG_DEBUG_REG - subdevice->reg_base = me8200_regbase; -#endif - - /* Initialize wait queue */ - init_waitqueue_head(&subdevice->wait_queue); - - /* Overload base class methods. */ - subdevice->base.me_subdevice_io_irq_start = me8200_di_io_irq_start; - subdevice->base.me_subdevice_io_irq_wait = me8200_di_io_irq_wait; - subdevice->base.me_subdevice_io_irq_stop = me8200_di_io_irq_stop; - subdevice->base.me_subdevice_io_reset_subdevice = - me8200_di_io_reset_subdevice; - subdevice->base.me_subdevice_io_single_config = - me8200_di_io_single_config; - subdevice->base.me_subdevice_io_single_read = me8200_di_io_single_read; - subdevice->base.me_subdevice_query_number_channels = - me8200_di_query_number_channels; - subdevice->base.me_subdevice_query_subdevice_type = - me8200_di_query_subdevice_type; - subdevice->base.me_subdevice_query_subdevice_caps = - me8200_di_query_subdevice_caps; - subdevice->base.me_subdevice_destructor = me8200_di_destructor; - - subdevice->rised = 0; - subdevice->count = 0; - - /* Register interrupt service routine. */ - subdevice->irq = irq; - if (subdevice->version > 0) { // NEW - err = request_irq(subdevice->irq, me8200_isr_EX, - IRQF_DISABLED | IRQF_SHARED, - ME8200_NAME, (void *)subdevice); - } else { //OLD - err = request_irq(subdevice->irq, me8200_isr, - IRQF_DISABLED | IRQF_SHARED, - ME8200_NAME, (void *)subdevice); - } - - if (err) { - PERROR("Cannot initialize subdevice base class instance.\n"); - kfree(subdevice); - return NULL; - } - PDEBUG("Registred irq=%d.\n", subdevice->irq); - - return subdevice; -} - -static void me8200_di_check_version(me8200_di_subdevice_t *instance, - unsigned long addr) -{ - - PDEBUG("executed.\n"); - instance->version = 0x000000FF & inb(addr); - PDEVELOP("me8200 firmware version: %d\n", instance->version); - - /// @note Fix for wrong values in this registry. - if ((instance->version < 0x7) || (instance->version > 0x1F)) - instance->version = 0x0; -} |