diff options
Diffstat (limited to 'drivers/staging/meilhaus/me8200_do.c')
| -rw-r--r-- | drivers/staging/meilhaus/me8200_do.c | 591 |
1 files changed, 0 insertions, 591 deletions
diff --git a/drivers/staging/meilhaus/me8200_do.c b/drivers/staging/meilhaus/me8200_do.c deleted file mode 100644 index e42a137617a1..000000000000 --- a/drivers/staging/meilhaus/me8200_do.c +++ /dev/null @@ -1,591 +0,0 @@ -/** - * @file me8200_do.c - * - * @brief ME-8200 digital output 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/interrupt.h> -#include <linux/io.h> -#include <linux/types.h> - -#include "medefines.h" -#include "meinternal.h" -#include "meerror.h" - -#include "meids.h" -#include "medebug.h" -#include "me8200_reg.h" -#include "me8200_do_reg.h" -#include "me8200_do.h" - -/* - * Defines - */ - -/* - * Functions - */ - -static int me8200_do_io_irq_start(me_subdevice_t *subdevice, - struct file *filep, - int channel, - int irq_source, - int irq_edge, int irq_arg, int flags) -{ - me8200_do_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - uint8_t tmp; - unsigned long status; - - if (flags & ~ME_IO_IRQ_START_DIO_BYTE) { - PERROR("Invalid flag specified.\n"); - return ME_ERRNO_INVALID_FLAGS; - } - - if (channel != 0) { - PERROR("Invalid channel specified.\n"); - return ME_ERRNO_INVALID_CHANNEL; - } - - if (irq_source != ME_IRQ_SOURCE_DIO_OVER_TEMP) { - PERROR("Invalid interrupt source specified.\n"); - return ME_ERRNO_INVALID_IRQ_SOURCE; - } - - PDEBUG("executed.\n"); - - instance = (me8200_do_subdevice_t *) subdevice; - - ME_SUBDEVICE_ENTER; - - spin_lock_irqsave(&instance->subdevice_lock, status); - spin_lock(instance->irq_mode_lock); - tmp = inb(instance->irq_ctrl_reg); - tmp |= - ME8200_IRQ_MODE_BIT_ENABLE_POWER << (ME8200_IRQ_MODE_POWER_SHIFT * - instance->do_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_mode_lock); - instance->rised = 0; - spin_unlock_irqrestore(&instance->subdevice_lock, status); - - ME_SUBDEVICE_EXIT; - - return err; -} - -static int me8200_do_io_irq_wait(me_subdevice_t *subdevice, - struct file *filep, - int channel, - int *irq_count, - int *value, int time_out, int flags) -{ - me8200_do_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - long t = 0; - unsigned long cpu_flags; - - PDEBUG("executed.\n"); - - instance = (me8200_do_subdevice_t *) subdevice; - - if (flags) { - PERROR("Invalid flag specified.\n"); - return ME_ERRNO_INVALID_FLAGS; - } - - 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; - - if (time_out) { - t = wait_event_interruptible_timeout(instance-> - wait_queue, - (instance->rised != - 0), t); - - if (t == 0) { - PERROR - ("Wait on external interrupt timed out.\n"); - err = ME_ERRNO_TIMEOUT; - } - } else { - 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 external interrupt aborted by signal.\n"); - err = ME_ERRNO_SIGNAL; - } - - spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); - instance->rised = 0; - *irq_count = instance->count; - *value = 0; - spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); - - ME_SUBDEVICE_EXIT; - - return err; -} - -static int me8200_do_io_irq_stop(me_subdevice_t *subdevice, - struct file *filep, int channel, int flags) -{ - me8200_do_subdevice_t *instance; - uint8_t tmp; - unsigned long cpu_flags; - - PDEBUG("executed.\n"); - - instance = (me8200_do_subdevice_t *) subdevice; - - if (flags) { - PERROR("Invalid flag specified.\n"); - return ME_ERRNO_INVALID_FLAGS; - } - - ME_SUBDEVICE_ENTER; - - spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); - spin_lock(instance->irq_mode_lock); - tmp = inb(instance->irq_ctrl_reg); - tmp &= - ~(ME8200_IRQ_MODE_BIT_ENABLE_POWER << - (ME8200_IRQ_MODE_POWER_SHIFT * instance->do_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_mode_lock); - instance->rised = -1; - spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); - wake_up_interruptible_all(&instance->wait_queue); - - ME_SUBDEVICE_EXIT; - - return ME_ERRNO_SUCCESS; -} - -static int me8200_do_io_reset_subdevice(struct me_subdevice *subdevice, - struct file *filep, int flags) -{ - me8200_do_subdevice_t *instance; - unsigned long cpu_flags; - uint8_t tmp; - - PDEBUG("executed.\n"); - - instance = (me8200_do_subdevice_t *) subdevice; - - if (flags) { - PERROR("Invalid flag specified.\n"); - return ME_ERRNO_INVALID_FLAGS; - } - - ME_SUBDEVICE_ENTER; - - spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); - outb(0x00, instance->port_reg); - PDEBUG_REG("port_reg outb(0x%lX+0x%lX)=0x%x\n", instance->reg_base, - instance->port_reg - instance->reg_base, 0x00); - spin_lock(instance->irq_mode_lock); - tmp = inb(instance->irq_ctrl_reg); - tmp &= - ~(ME8200_IRQ_MODE_BIT_ENABLE_POWER << - (ME8200_IRQ_MODE_POWER_SHIFT * instance->do_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_mode_lock); - instance->rised = -1; - instance->count = 0; - spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); - wake_up_interruptible_all(&instance->wait_queue); - - ME_SUBDEVICE_EXIT; - - return ME_ERRNO_SUCCESS; -} - -static int me8200_do_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_do_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - unsigned long status; - - PDEBUG("executed.\n"); - - instance = (me8200_do_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_OUTPUT) { - } else { - PERROR("Invalid byte direction specified.\n"); - err = ME_ERRNO_INVALID_SINGLE_CONFIG; - } - } else { - PERROR("Invalid byte specified.\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_do_io_single_read(me_subdevice_t *subdevice, - struct file *filep, - int channel, - int *value, int time_out, int flags) -{ - me8200_do_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - unsigned long status; - - PDEBUG("executed.\n"); - - instance = (me8200_do_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 byte number specified.\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_do_io_single_write(me_subdevice_t *subdevice, - struct file *filep, - int channel, - int value, int time_out, int flags) -{ - me8200_do_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - uint8_t state; - unsigned long status; - - PDEBUG("executed.\n"); - - instance = (me8200_do_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)) { - state = inb(instance->port_reg); - state = - value ? (state | (0x1 << channel)) : (state & - ~(0x1 << - channel)); - outb(state, instance->port_reg); - PDEBUG_REG("port_reg outb(0x%lX+0x%lX)=0x%x\n", - instance->reg_base, - instance->port_reg - instance->reg_base, - state); - } 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) { - outb(value, instance->port_reg); - PDEBUG_REG("port_reg outb(0x%lX+0x%lX)=0x%x\n", - instance->reg_base, - instance->port_reg - instance->reg_base, - value); - } else { - PERROR("Invalid byte number specified.\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_do_query_number_channels(me_subdevice_t *subdevice, - int *number) -{ - PDEBUG("executed.\n"); - *number = 8; - return ME_ERRNO_SUCCESS; -} - -static int me8200_do_query_subdevice_type(me_subdevice_t *subdevice, - int *type, int *subtype) -{ - PDEBUG("executed.\n"); - *type = ME_TYPE_DO; - *subtype = ME_SUBTYPE_SINGLE; - return ME_ERRNO_SUCCESS; -} - -static int me8200_do_query_subdevice_caps(me_subdevice_t *subdevice, int *caps) -{ - PDEBUG("executed.\n"); - *caps = ME_CAPS_DIO_OVER_TEMP_IRQ; - return ME_ERRNO_SUCCESS; -} - -static void me8200_do_destructor(struct me_subdevice *subdevice) -{ - me8200_do_subdevice_t *instance; - - PDEBUG("executed.\n"); - - instance = (me8200_do_subdevice_t *) subdevice; - - free_irq(instance->irq, (void *)instance); - me_subdevice_deinit(&instance->base); - kfree(instance); -} - -static irqreturn_t me8200_do_isr(int irq, void *dev_id) -{ - me8200_do_subdevice_t *instance; - uint16_t ctrl; - uint8_t irq_status; - - instance = (me8200_do_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 & - (ME8200_DO_IRQ_STATUS_BIT_ACTIVE << instance->do_idx))) { - PINFO - ("%ld Shared interrupt. %s(): idx=%d irq_status_reg=0x%04X\n", - jiffies, __func__, instance->do_idx, irq_status); - return IRQ_NONE; - } - - PDEBUG("executed.\n"); - - spin_lock(&instance->subdevice_lock); - instance->rised = 1; - instance->count++; - - spin_lock(instance->irq_mode_lock); - ctrl = inw(instance->irq_ctrl_reg); - ctrl |= ME8200_IRQ_MODE_BIT_CLEAR_POWER << instance->do_idx; - outw(ctrl, instance->irq_ctrl_reg); - PDEBUG_REG("irq_ctrl_reg outw(0x%lX+0x%lX)=0x%x\n", instance->reg_base, - instance->irq_ctrl_reg - instance->reg_base, ctrl); - ctrl &= ~(ME8200_IRQ_MODE_BIT_CLEAR_POWER << instance->do_idx); - outw(ctrl, instance->irq_ctrl_reg); - PDEBUG_REG("irq_ctrl_reg outw(0x%lX+0x%lX)=0x%x\n", instance->reg_base, - instance->irq_ctrl_reg - instance->reg_base, ctrl); - spin_unlock(instance->irq_mode_lock); - spin_unlock(&instance->subdevice_lock); - wake_up_interruptible_all(&instance->wait_queue); - - return IRQ_HANDLED; -} - -me8200_do_subdevice_t *me8200_do_constructor(uint32_t reg_base, - unsigned int do_idx, - int irq, - spinlock_t *irq_mode_lock) -{ - me8200_do_subdevice_t *subdevice; - int err; - - PDEBUG("executed.\n"); - - /* Allocate memory for subdevice instance */ - subdevice = kmalloc(sizeof(me8200_do_subdevice_t), GFP_KERNEL); - - if (!subdevice) { - PERROR("Cannot get memory for subdevice instance.\n"); - return NULL; - } - - memset(subdevice, 0, sizeof(me8200_do_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; - } - // Initialize spin locks. - spin_lock_init(&subdevice->subdevice_lock); - - subdevice->irq_mode_lock = irq_mode_lock; - - /* Save the index of the digital output */ - subdevice->do_idx = do_idx; - subdevice->irq = irq; - - /* Initialize the registers */ - if (do_idx == 0) { - subdevice->port_reg = reg_base + ME8200_DO_PORT_0_REG; - } else if (do_idx == 1) { - subdevice->port_reg = reg_base + ME8200_DO_PORT_1_REG; - } else { - PERROR("Wrong subdevice idx=%d.\n", do_idx); - kfree(subdevice); - return NULL; - } - subdevice->irq_ctrl_reg = reg_base + ME8200_IRQ_MODE_REG; - subdevice->irq_status_reg = reg_base + ME8200_DO_IRQ_STATUS_REG; -#ifdef MEDEBUG_DEBUG_REG - subdevice->reg_base = reg_base; -#endif - - /* Initialize the wait queue */ - init_waitqueue_head(&subdevice->wait_queue); - - /* Request the interrupt line */ - err = request_irq(irq, me8200_do_isr, - IRQF_DISABLED | IRQF_SHARED, - ME8200_NAME, (void *)subdevice); - - if (err) { - PERROR("Cannot get interrupt line.\n"); - kfree(subdevice); - return NULL; - } - PINFO("Registered irq=%d.\n", irq); - - /* Overload base class methods. */ - subdevice->base.me_subdevice_io_irq_start = me8200_do_io_irq_start; - subdevice->base.me_subdevice_io_irq_wait = me8200_do_io_irq_wait; - subdevice->base.me_subdevice_io_irq_stop = me8200_do_io_irq_stop; - subdevice->base.me_subdevice_io_reset_subdevice = - me8200_do_io_reset_subdevice; - subdevice->base.me_subdevice_io_single_config = - me8200_do_io_single_config; - subdevice->base.me_subdevice_io_single_read = me8200_do_io_single_read; - subdevice->base.me_subdevice_io_single_write = - me8200_do_io_single_write; - subdevice->base.me_subdevice_query_number_channels = - me8200_do_query_number_channels; - subdevice->base.me_subdevice_query_subdevice_type = - me8200_do_query_subdevice_type; - subdevice->base.me_subdevice_query_subdevice_caps = - me8200_do_query_subdevice_caps; - subdevice->base.me_subdevice_destructor = me8200_do_destructor; - - subdevice->rised = 0; - subdevice->count = 0; - - return subdevice; -} |