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author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 19:54:53 (GMT) |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 20:01:40 (GMT) |
commit | ae19ffbadc1b2100285a5b5b3d0a4e0a11390904 (patch) | |
tree | 3c2086ab67398a019089a47ca3f362a4bc6db74f /drivers/staging/meilhaus/me1000_dio.c | |
parent | 34e84f39a27d059a3e6ec6e8b94aafa702e6f220 (diff) | |
parent | 9173a8ef24a6b1b8031507b35b8ffe5f85a87692 (diff) | |
download | linux-fsl-qoriq-ae19ffbadc1b2100285a5b5b3d0a4e0a11390904.tar.xz |
Merge branch 'master' into for-linus
Diffstat (limited to 'drivers/staging/meilhaus/me1000_dio.c')
-rw-r--r-- | drivers/staging/meilhaus/me1000_dio.c | 438 |
1 files changed, 0 insertions, 438 deletions
diff --git a/drivers/staging/meilhaus/me1000_dio.c b/drivers/staging/meilhaus/me1000_dio.c deleted file mode 100644 index 2d7ed07..0000000 --- a/drivers/staging/meilhaus/me1000_dio.c +++ /dev/null @@ -1,438 +0,0 @@ -/** - * @file me1000_dio.c - * - * @brief ME-1000 DIO subdevice instance. - * @note Copyright (C) 2006 Meilhaus Electronic GmbH (support@meilhaus.de) - * @author Guenter Gebhardt - * @author Krzysztof Gantzke (k.gantzke@meilhaus.de) - */ - -/* - * Copyright (C) 2006 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 "me1000_dio_reg.h" -#include "me1000_dio.h" - -/* - * Defines - */ -#define ME1000_DIO_MAGIC_NUMBER 0x1000 /**< The magic number of the class structure. */ - -/* - * Functions - */ - -static int me1000_dio_io_reset_subdevice(struct me_subdevice *subdevice, - struct file *filep, int flags) -{ - me1000_dio_subdevice_t *instance; - uint32_t tmp; - - PDEBUG("executed.\n"); - - instance = (me1000_dio_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); - tmp = inl(instance->ctrl_reg); - tmp &= ~(0x1 << instance->dio_idx); - outl(tmp, instance->ctrl_reg); - PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, - instance->ctrl_reg - instance->reg_base, tmp); - spin_unlock(instance->ctrl_reg_lock); - - outl(0x00000000, instance->port_reg); - PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, - instance->ctrl_reg - instance->reg_base, 0); - spin_unlock(&instance->subdevice_lock); - - ME_SUBDEVICE_EXIT; - - return ME_ERRNO_SUCCESS; -} - -static int me1000_dio_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) -{ - me1000_dio_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - int ctrl; - int size = - flags & (ME_IO_SINGLE_CONFIG_DIO_BIT | ME_IO_SINGLE_CONFIG_DIO_BYTE - | ME_IO_SINGLE_CONFIG_DIO_WORD | - ME_IO_SINGLE_CONFIG_DIO_DWORD); - - PDEBUG("executed.\n"); - - instance = (me1000_dio_subdevice_t *) subdevice; - - ME_SUBDEVICE_ENTER; - - spin_lock(&instance->subdevice_lock); - spin_lock(instance->ctrl_reg_lock); - ctrl = inl(instance->ctrl_reg); - - switch (size) { - case ME_IO_SINGLE_CONFIG_NO_FLAGS: - case ME_IO_SINGLE_CONFIG_DIO_DWORD: - if (channel == 0) { - if (single_config == ME_SINGLE_CONFIG_DIO_INPUT) { - ctrl &= ~(0x1 << instance->dio_idx); - } else if (single_config == ME_SINGLE_CONFIG_DIO_OUTPUT) { - ctrl |= 0x1 << instance->dio_idx; - } else { - PERROR("Invalid port direction.\n"); - err = ME_ERRNO_INVALID_SINGLE_CONFIG; - } - } else { - PERROR("Invalid channel number.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - default: - PERROR("Invalid flags.\n"); - err = ME_ERRNO_INVALID_FLAGS; - } - - if (!err) { - outl(ctrl, instance->ctrl_reg); - PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", - instance->reg_base, - instance->ctrl_reg - instance->reg_base, ctrl); - } - spin_unlock(instance->ctrl_reg_lock); - spin_unlock(&instance->subdevice_lock); - - ME_SUBDEVICE_EXIT; - - return err; -} - -static int me1000_dio_io_single_read(struct me_subdevice *subdevice, - struct file *filep, - int channel, - int *value, int time_out, int flags) -{ - me1000_dio_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - - PDEBUG("executed.\n"); - - instance = (me1000_dio_subdevice_t *) subdevice; - - ME_SUBDEVICE_ENTER; - - spin_lock(&instance->subdevice_lock); - switch (flags) { - case ME_IO_SINGLE_TYPE_DIO_BIT: - if ((channel >= 0) && (channel < 32)) { - *value = inl(instance->port_reg) & (0x1 << channel); - } else { - PERROR("Invalid bit number.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - case ME_IO_SINGLE_TYPE_DIO_BYTE: - if ((channel >= 0) && (channel < 4)) { - *value = - (inl(instance->port_reg) >> (channel * 8)) & 0xFF; - } else { - PERROR("Invalid byte number.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - case ME_IO_SINGLE_TYPE_DIO_WORD: - if ((channel >= 0) && (channel < 2)) { - *value = - (inl(instance->port_reg) >> (channel * 16)) & - 0xFFFF; - } else { - PERROR("Invalid word number.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - case ME_IO_SINGLE_NO_FLAGS: - case ME_IO_SINGLE_TYPE_DIO_DWORD: - if (channel == 0) { - *value = inl(instance->port_reg); - } else { - PERROR("Invalid dword 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 me1000_dio_io_single_write(struct me_subdevice *subdevice, - struct file *filep, - int channel, - int value, int time_out, int flags) -{ - me1000_dio_subdevice_t *instance; - int err = ME_ERRNO_SUCCESS; - uint32_t config; - uint32_t state; - - PDEBUG("executed.\n"); - - instance = (me1000_dio_subdevice_t *) subdevice; - - ME_SUBDEVICE_ENTER spin_lock(&instance->subdevice_lock); - spin_lock(instance->ctrl_reg_lock); - config = inl(instance->ctrl_reg) & (0x1 << instance->dio_idx); - switch (flags) { - case ME_IO_SINGLE_TYPE_DIO_BIT: - if ((channel >= 0) && (channel < 32)) { - if (config) { - state = inl(instance->port_reg); - state = - value ? (state | (0x1 << channel)) : (state - & - ~(0x1 - << - channel)); - outl(state, instance->port_reg); - PDEBUG_REG("port_reg outl(0x%lX+0x%lX)=0x%x\n", - instance->reg_base, - instance->port_reg - - instance->reg_base, state); - } else { - PERROR("Port is 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_TYPE_DIO_BYTE: - if ((channel >= 0) && (channel < 4)) { - if (config) { - state = inl(instance->port_reg); - state &= ~(0xFF << (channel * 8)); - state |= (value & 0xFF) << (channel * 8); - outl(state, instance->port_reg); - PDEBUG_REG("port_reg outl(0x%lX+0x%lX)=0x%x\n", - instance->reg_base, - instance->port_reg - - instance->reg_base, state); - } else { - PERROR("Port is not in output mode.\n"); - err = ME_ERRNO_PREVIOUS_CONFIG; - } - } else { - PERROR("Invalid byte number.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - case ME_IO_SINGLE_TYPE_DIO_WORD: - if ((channel >= 0) && (channel < 2)) { - if (config) { - state = inl(instance->port_reg); - state &= ~(0xFFFF << (channel * 16)); - state |= (value & 0xFFFF) << (channel * 16); - outl(state, instance->port_reg); - PDEBUG_REG("port_reg outl(0x%lX+0x%lX)=0x%x\n", - instance->reg_base, - instance->port_reg - - instance->reg_base, state); - } else { - PERROR("Port is not in output mode.\n"); - err = ME_ERRNO_PREVIOUS_CONFIG; - } - } else { - PERROR("Invalid word number.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - case ME_IO_SINGLE_NO_FLAGS: - case ME_IO_SINGLE_TYPE_DIO_DWORD: - if (channel == 0) { - if (config) { - outl(value, instance->port_reg); - PDEBUG_REG("port_reg outl(0x%lX+0x%lX)=0x%x\n", - instance->reg_base, - instance->port_reg - - instance->reg_base, value); - } else { - PERROR("Port is not in output mode.\n"); - err = ME_ERRNO_PREVIOUS_CONFIG; - } - } else { - PERROR("Invalid dword number.\n"); - err = ME_ERRNO_INVALID_CHANNEL; - } - break; - - default: - PERROR("Invalid flags specified.\n"); - err = ME_ERRNO_INVALID_FLAGS; - } - spin_unlock(instance->ctrl_reg_lock); - spin_unlock(&instance->subdevice_lock); - - ME_SUBDEVICE_EXIT; - - return err; -} - -static int me1000_dio_query_number_channels(struct me_subdevice *subdevice, - int *number) -{ - PDEBUG("executed.\n"); - *number = ME1000_DIO_NUMBER_CHANNELS; - return ME_ERRNO_SUCCESS; -} - -static int me1000_dio_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 me1000_dio_query_subdevice_caps(struct me_subdevice *subdevice, - int *caps) -{ - me1000_dio_subdevice_t *instance; - - PDEBUG("executed.\n"); - - instance = (me1000_dio_subdevice_t *) subdevice; - - *caps = ME_CAPS_DIO_DIR_DWORD; - - return ME_ERRNO_SUCCESS; -} - -me1000_dio_subdevice_t *me1000_dio_constructor(uint32_t reg_base, - unsigned int dio_idx, - spinlock_t *ctrl_reg_lock) -{ - me1000_dio_subdevice_t *subdevice; - int err; - - PDEBUG("executed.\n"); - - /* Allocate memory for subdevice instance */ - subdevice = kmalloc(sizeof(me1000_dio_subdevice_t), GFP_KERNEL); - - if (!subdevice) { - PERROR("Cannot get memory for ME-1000 DIO instance.\n"); - return NULL; - } - - memset(subdevice, 0, sizeof(me1000_dio_subdevice_t)); - - /* Check if counter index is out of range */ - - if (dio_idx >= ME1000_DIO_NUMBER_PORTS) { - 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 DIO index */ - subdevice->dio_idx = dio_idx; - - /* Initialize registers. */ -#ifdef MEDEBUG_DEBUG_REG - subdevice->reg_base = reg_base; -#endif - subdevice->ctrl_reg = reg_base + ME1000_PORT_MODE; - subdevice->port_reg = - reg_base + ME1000_PORT + (dio_idx * ME1000_PORT_STEP); - - /* Override base class methods. */ - subdevice->base.me_subdevice_io_reset_subdevice = - me1000_dio_io_reset_subdevice; - subdevice->base.me_subdevice_io_single_config = - me1000_dio_io_single_config; - subdevice->base.me_subdevice_io_single_read = me1000_dio_io_single_read; - subdevice->base.me_subdevice_io_single_write = - me1000_dio_io_single_write; - subdevice->base.me_subdevice_query_number_channels = - me1000_dio_query_number_channels; - subdevice->base.me_subdevice_query_subdevice_type = - me1000_dio_query_subdevice_type; - subdevice->base.me_subdevice_query_subdevice_caps = - me1000_dio_query_subdevice_caps; - - return subdevice; -} |