diff options
Diffstat (limited to 'drivers/staging/meilhaus/me8255.c')
| -rw-r--r-- | drivers/staging/meilhaus/me8255.c | 462 |
1 files changed, 0 insertions, 462 deletions
diff --git a/drivers/staging/meilhaus/me8255.c b/drivers/staging/meilhaus/me8255.c deleted file mode 100644 index ec9c638..0000000 --- a/drivers/staging/meilhaus/me8255.c +++ /dev/null @@ -1,462 +0,0 @@ -/** - * @file me8255.c - * - * @brief 8255 subdevice instance. - * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) - * @author Guenter Gebhardt - */ - -/* - * 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 "medefines.h" -#include "meinternal.h" -#include "meerror.h" -#include "medebug.h" - -#include "me8255_reg.h" -#include "me8255.h" - -/* - * Defines - */ - -/* - * Functions - */ - -static uint8_t get_mode_from_mirror(uint32_t mirror) -{ - PDEBUG("executed.\n"); - - if (mirror & ME8255_PORT_0_OUTPUT) { - if (mirror & ME8255_PORT_1_OUTPUT) { - if (mirror & ME8255_PORT_2_OUTPUT) { - return ME8255_MODE_OOO; - } else { - return ME8255_MODE_IOO; - } - } else { - if (mirror & ME8255_PORT_2_OUTPUT) { - return ME8255_MODE_OIO; - } else { - return ME8255_MODE_IIO; - } - } - } else { - if (mirror & ME8255_PORT_1_OUTPUT) { - if (mirror & ME8255_PORT_2_OUTPUT) { - return ME8255_MODE_OOI; - } else { - return ME8255_MODE_IOI; - } - } else { - if (mirror & ME8255_PORT_2_OUTPUT) { - return ME8255_MODE_OII; - } else { - return ME8255_MODE_III; - } - } - } -} - -static int me8255_io_reset_subdevice(struct me_subdevice *subdevice, - struct file *filep, int flags) -{ - me8255_subdevice_t *instance; - - PDEBUG("executed.\n"); - - instance = (me8255_subdevice_t *) subdevice; - - if (flags) { - PERROR("Invalid flag specified.\n"); - return ME_ERRNO_INVALID_FLAGS; - } - - ME_SUBDEVICE_ENTER; - - spin_lock(&instance->subdevice_lock); - spin_lock(instance->ctrl_reg_lock); - *instance->ctrl_reg_mirror &= - ~(ME8255_PORT_0_OUTPUT << instance->dio_idx); - outb(get_mode_from_mirror(*instance->ctrl_reg_mirror), - instance->ctrl_reg); - spin_unlock(instance->ctrl_reg_lock); - - outb(0, instance->port_reg); - spin_unlock(&instance->subdevice_lock); - - ME_SUBDEVICE_EXIT; - - return ME_ERRNO_SUCCESS; -} - -static int me8255_io_single_config(struct me_subdevice *subdevice, - struct file *filep, - int channel, - int single_config, - int ref, - int trig_chan, - int trig_type, int trig_edge, int flags) -{ - me8255_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - - PDEBUG("executed.\n"); - - instance = (me8255_subdevice_t *) subdevice; - - if (flags & ~ME_IO_SINGLE_CONFIG_DIO_BYTE) { - PERROR("Invalid flag specified.\n"); - return ME_ERRNO_INVALID_FLAGS; - } - - if (channel) { - PERROR("Invalid channel.\n"); - return ME_ERRNO_INVALID_CHANNEL; - } - - ME_SUBDEVICE_ENTER; - - spin_lock(&instance->subdevice_lock); - if (single_config == ME_SINGLE_CONFIG_DIO_INPUT) { - spin_lock(instance->ctrl_reg_lock); - *instance->ctrl_reg_mirror &= - ~(ME8255_PORT_0_OUTPUT << instance->dio_idx); - outb(get_mode_from_mirror(*instance->ctrl_reg_mirror), - instance->ctrl_reg); - spin_unlock(instance->ctrl_reg_lock); - } else if (single_config == ME_SINGLE_CONFIG_DIO_OUTPUT) { - spin_lock(instance->ctrl_reg_lock); - *instance->ctrl_reg_mirror |= - (ME8255_PORT_0_OUTPUT << instance->dio_idx); - outb(get_mode_from_mirror(*instance->ctrl_reg_mirror), - instance->ctrl_reg); - spin_unlock(instance->ctrl_reg_lock); - } else { - PERROR("Invalid port direction.\n"); - err = ME_ERRNO_INVALID_SINGLE_CONFIG; - } - spin_unlock(&instance->subdevice_lock); - - ME_SUBDEVICE_EXIT; - - return err; -} - -static int me8255_io_single_read(struct me_subdevice *subdevice, - struct file *filep, - int channel, - int *value, int time_out, int flags) -{ - me8255_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - - PDEBUG("executed.\n"); - - instance = (me8255_subdevice_t *) subdevice; - - ME_SUBDEVICE_ENTER; - - spin_lock(&instance->subdevice_lock); - 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.\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.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - default: - PERROR("Invalid flags specified.\n"); - err = ME_ERRNO_INVALID_FLAGS; - } - spin_unlock(&instance->subdevice_lock); - - ME_SUBDEVICE_EXIT; - - return err; -} - -static int me8255_io_single_write(struct me_subdevice *subdevice, - struct file *filep, - int channel, - int value, int time_out, int flags) -{ - me8255_subdevice_t *instance; - uint8_t byte; - int err = ME_ERRNO_SUCCESS; - - PDEBUG("executed.\n"); - - instance = (me8255_subdevice_t *) subdevice; - - ME_SUBDEVICE_ENTER; - - spin_lock(&instance->subdevice_lock); - switch (flags) { - case ME_IO_SINGLE_TYPE_DIO_BIT: - if ((channel >= 0) && (channel < 8)) { - if (*instance-> - ctrl_reg_mirror & (ME8255_PORT_0_OUTPUT << - instance->dio_idx)) { - byte = inb(instance->port_reg); - - if (value) - byte |= 0x1 << channel; - else - byte &= ~(0x1 << channel); - - outb(byte, instance->port_reg); - } else { - PERROR("Port not in output mode.\n"); - err = ME_ERRNO_PREVIOUS_CONFIG; - } - } else { - PERROR("Invalid bit number.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - case ME_IO_SINGLE_NO_FLAGS: - case ME_IO_SINGLE_TYPE_DIO_BYTE: - if (channel == 0) { - if (*instance-> - ctrl_reg_mirror & (ME8255_PORT_0_OUTPUT << - instance->dio_idx)) { - outb(value, instance->port_reg); - } else { - PERROR("Port not in output mode.\n"); - err = ME_ERRNO_PREVIOUS_CONFIG; - } - } else { - PERROR("Invalid byte number.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - default: - PERROR("Invalid flags specified.\n"); - err = ME_ERRNO_INVALID_FLAGS; - } - spin_unlock(&instance->subdevice_lock); - - ME_SUBDEVICE_EXIT; - - return err; -} - -static int me8255_query_number_channels(struct me_subdevice *subdevice, - int *number) -{ - PDEBUG("executed.\n"); - *number = ME8255_NUMBER_CHANNELS; - return ME_ERRNO_SUCCESS; -} - -static int me8255_query_subdevice_type(struct me_subdevice *subdevice, - int *type, int *subtype) -{ - PDEBUG("executed.\n"); - *type = ME_TYPE_DIO; - *subtype = ME_SUBTYPE_SINGLE; - return ME_ERRNO_SUCCESS; -} - -static int me8255_query_subdevice_caps(struct me_subdevice *subdevice, - int *caps) -{ - PDEBUG("executed.\n"); - *caps = ME_CAPS_DIO_DIR_BYTE; - return ME_ERRNO_SUCCESS; -} - -me8255_subdevice_t *me8255_constructor(uint32_t device_id, - uint32_t reg_base, - unsigned int me8255_idx, - unsigned int dio_idx, - int *ctrl_reg_mirror, - spinlock_t *ctrl_reg_lock) -{ - me8255_subdevice_t *subdevice; - int err; - - PDEBUG("executed.\n"); - - /* Allocate memory for subdevice instance */ - subdevice = kmalloc(sizeof(me8255_subdevice_t), GFP_KERNEL); - - if (!subdevice) { - PERROR("Cannot get memory for 8255 instance.\n"); - return NULL; - } - - memset(subdevice, 0, sizeof(me8255_subdevice_t)); - - /* Check if counter index is out of range */ - - if (dio_idx > 2) { - PERROR("DIO index is out of range.\n"); - kfree(subdevice); - return NULL; - } - - /* 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->ctrl_reg_lock = ctrl_reg_lock; - - /* Save the pointer to global port settings */ - subdevice->ctrl_reg_mirror = ctrl_reg_mirror; - - /* Save type of Meilhaus device */ - subdevice->device_id = device_id; - - /* Save the indices */ - subdevice->me8255_idx = me8255_idx; - subdevice->dio_idx = dio_idx; - - /* Do device specific initialization */ - switch (device_id) { - case PCI_DEVICE_ID_MEILHAUS_ME1400: - case PCI_DEVICE_ID_MEILHAUS_ME14E0: - - case PCI_DEVICE_ID_MEILHAUS_ME140A: - case PCI_DEVICE_ID_MEILHAUS_ME14EA: - /* Check if 8255 index is out of range */ - if (me8255_idx > 0) { - PERROR("8255 index is out of range.\n"); - me_subdevice_deinit(&subdevice->base); - kfree(subdevice); - return NULL; - } - - case PCI_DEVICE_ID_MEILHAUS_ME140B: /* Fall through */ - case PCI_DEVICE_ID_MEILHAUS_ME14EB: - /* Check if 8255 index is out of range */ - if (me8255_idx > 1) { - PERROR("8255 index is out of range.\n"); - me_subdevice_deinit(&subdevice->base); - kfree(subdevice); - return NULL; - } - - /* Get the registers */ - if (me8255_idx == 0) { - subdevice->ctrl_reg = reg_base + ME1400AB_PORT_A_CTRL; - subdevice->port_reg = - reg_base + ME1400AB_PORT_A_0 + dio_idx; - } else if (me8255_idx == 1) { - subdevice->ctrl_reg = reg_base + ME1400AB_PORT_B_CTRL; - subdevice->port_reg = - reg_base + ME1400AB_PORT_B_0 + dio_idx; - } - - break; - - case PCI_DEVICE_ID_MEILHAUS_ME140C: - /* Check if 8255 index is out of range */ - if (me8255_idx > 0) { - PERROR("8255 index is out of range.\n"); - me_subdevice_deinit(&subdevice->base); - kfree(subdevice); - return NULL; - } - - case PCI_DEVICE_ID_MEILHAUS_ME140D: /* Fall through */ - /* Check if 8255 index is out of range */ - if (me8255_idx > 1) { - PERROR("8255 index is out of range.\n"); - me_subdevice_deinit(&subdevice->base); - kfree(subdevice); - return NULL; - } - - /* Get the registers */ - if (me8255_idx == 0) { - subdevice->ctrl_reg = reg_base + ME1400CD_PORT_A_CTRL; - subdevice->port_reg = - reg_base + ME1400CD_PORT_A_0 + dio_idx; - } else if (me8255_idx == 1) { - subdevice->ctrl_reg = reg_base + ME1400CD_PORT_B_CTRL; - subdevice->port_reg = - reg_base + ME1400CD_PORT_B_0 + dio_idx; - } - - break; - - default: - PERROR("Unknown device type. dev ID: 0x%04x\n", device_id); - - me_subdevice_deinit(&subdevice->base); - - kfree(subdevice); - - return NULL; - } - - /* Overload subdevice base class methods. */ - subdevice->base.me_subdevice_io_reset_subdevice = - me8255_io_reset_subdevice; - subdevice->base.me_subdevice_io_single_config = me8255_io_single_config; - subdevice->base.me_subdevice_io_single_read = me8255_io_single_read; - subdevice->base.me_subdevice_io_single_write = me8255_io_single_write; - subdevice->base.me_subdevice_query_number_channels = - me8255_query_number_channels; - subdevice->base.me_subdevice_query_subdevice_type = - me8255_query_subdevice_type; - subdevice->base.me_subdevice_query_subdevice_caps = - me8255_query_subdevice_caps; - - return subdevice; -} |