diff options
author | merge <null@invalid> | 2009-01-22 13:55:32 +0000 |
---|---|---|
committer | Andy Green <agreen@octopus.localdomain> | 2009-01-22 13:55:32 +0000 |
commit | aa6f5ffbdba45aa8e19e5048648fc6c7b25376d3 (patch) | |
tree | fbb786d0ac6f8a774fd834e9ce951197e60fbffa /drivers/staging/meilhaus/me4600_ai.h | |
parent | f2d78193eae5dccd3d588d2c8ea0866efc368332 (diff) |
MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141
pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040
stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch
mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage:
From: Andy Green <andy@openmoko.com>
fix-stray-endmenu.patch
Signed-off-by: Andy Green <andy@openmoko.com>
Diffstat (limited to 'drivers/staging/meilhaus/me4600_ai.h')
-rw-r--r-- | drivers/staging/meilhaus/me4600_ai.h | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/drivers/staging/meilhaus/me4600_ai.h b/drivers/staging/meilhaus/me4600_ai.h new file mode 100644 index 00000000000..1d5a1b9c6f9 --- /dev/null +++ b/drivers/staging/meilhaus/me4600_ai.h @@ -0,0 +1,180 @@ +/** + * @file me4600_ai.h + * + * @brief Meilhaus ME-4000 analog input subdevice class. + * @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 _ME4600_AI_H_ +#define _ME4600_AI_H_ + +#include <linux/version.h> +#include "mesubdevice.h" +#include "meioctl.h" +#include "mecirc_buf.h" + +#ifdef __KERNEL__ + +#define ME4600_AI_MAX_DATA 0xFFFF + +#ifdef ME_SYNAPSE +# define ME4600_AI_CIRC_BUF_SIZE_ORDER 8 // 2^n PAGES =>> Maximum value of 1MB for Synapse +#else +# define ME4600_AI_CIRC_BUF_SIZE_ORDER 5 // 2^n PAGES =>> 128KB +#endif +#define ME4600_AI_CIRC_BUF_SIZE PAGE_SIZE<<ME4600_AI_CIRC_BUF_SIZE_ORDER // Buffer size in bytes. + +#ifdef _CBUFF_32b_t +# define ME4600_AI_CIRC_BUF_COUNT ((ME4600_AI_CIRC_BUF_SIZE) / sizeof(uint32_t)) // Size in values +#else +# define ME4600_AI_CIRC_BUF_COUNT ((ME4600_AI_CIRC_BUF_SIZE) / sizeof(uint16_t)) // Size in values +#endif + +#define ME4600_AI_FIFO_HALF 1024 //ME4600_AI_FIFO_COUNT/2 //1024 +#define ME4600_AI_FIFO_MAX_SC 1352 //0.66*ME4600_AI_FIFO_COUNT //1352 + +typedef enum ME4600_AI_STATUS { + ai_status_none = 0, + ai_status_single_configured, + ai_status_stream_configured, + ai_status_stream_run_wait, + ai_status_stream_run, + ai_status_stream_end_wait, + ai_status_stream_end, + ai_status_stream_fifo_error, + ai_status_stream_buffer_error, + ai_status_stream_error, + ai_status_last +} ME4600_AI_STATUS; + +typedef struct me4600_single_config_entry { + unsigned short status; + uint32_t entry; + uint32_t ctrl; +} me4600_single_config_entry_t; + +typedef struct me4600_range_entry { + int min; + int max; +} me4600_range_entry_t; + +typedef struct me4600_ai_ISM { + volatile unsigned int global_read; /**< The number of data read in total. */ + volatile unsigned int read; /**< The number of data read for this chunck. */ + volatile unsigned int next; /**< The number of data request by user. */ +} me4600_ai_ISM_t; + +typedef struct me4600_ai_timeout { + unsigned long start_time; + unsigned long delay; +} me4600_ai_timeout_t; + +/** + * @brief The ME-4000 analog input subdevice class. + */ +typedef struct me4600_ai_subdevice { + /* Inheritance */ + me_subdevice_t base; /**< The subdevice base class. */ + + /* Attributes */ + spinlock_t subdevice_lock; /**< Spin lock to protect the subdevice from concurrent access. */ + spinlock_t *ctrl_reg_lock; /**< Spin lock to protect #ctrl_reg from concurrent access. */ + + /* Hardware feautres */ + unsigned int irq; /**< The interrupt request number assigned by the PCI BIOS. */ + int isolated; /**< Marks if this subdevice is on an optoisolated device. */ + int sh; /**< Marks if this subdevice has sample and hold devices. */ + + unsigned int channels; /**< The number of channels available on this subdevice. */ + me4600_single_config_entry_t single_config[32]; /**< The configuration set for single acquisition. */ + + unsigned int data_required; /**< The number of data request by user. */ + unsigned int fifo_irq_threshold; /**< The user adjusted FIFO high water interrupt level. */ + unsigned int chan_list_len; /**< The length of the user defined channel list. */ + + me4600_ai_ISM_t ISM; /**< The information request by Interrupt-State-Machine. */ + volatile enum ME4600_AI_STATUS status; /**< The current stream status flag. */ + me4600_ai_timeout_t timeout; /**< The timeout for start in blocking and non-blocking mode. */ + + /* Registers *//**< All registers are 32 bits long. */ + unsigned long ctrl_reg; + unsigned long status_reg; + unsigned long channel_list_reg; + unsigned long data_reg; + unsigned long chan_timer_reg; + unsigned long chan_pre_timer_reg; + unsigned long scan_timer_low_reg; + unsigned long scan_timer_high_reg; + unsigned long scan_pre_timer_low_reg; + unsigned long scan_pre_timer_high_reg; + unsigned long start_reg; + unsigned long irq_status_reg; + unsigned long sample_counter_reg; + + unsigned int ranges_len; + me4600_range_entry_t ranges[4]; /**< The ranges available on this subdevice. */ + + /* Software buffer */ + me_circ_buf_t circ_buf; /**< Circular buffer holding measurment data. */ + wait_queue_head_t wait_queue; /**< Wait queue to put on tasks waiting for data to arrive. */ + + struct workqueue_struct *me4600_workqueue; +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) + struct work_struct ai_control_task; +#else + struct delayed_work ai_control_task; +#endif + + volatile int ai_control_task_flag; /**< Flag controling reexecuting of control task */ + +#ifdef MEDEBUG_DEBUG_REG + unsigned long reg_base; +#endif +} me4600_ai_subdevice_t; + +/** + * @brief The constructor to generate a ME-4000 analog input subdevice instance. + * + * @param reg_base The register base address of the device as returned by the PCI BIOS. + * @param channels The number of analog input channels available on this subdevice. + * @param channels The number of analog input ranges available on this subdevice. + * @param isolated Flag indicating if this device is opto isolated. + * @param sh Flag indicating if sample and hold devices are available. + * @param irq The irq number assigned by PCI BIOS. + * @param ctrl_reg_lock Pointer to spin lock protecting the control register from concurrent access. + * + * @return Pointer to new instance on success.\n + * NULL on error. + */ +me4600_ai_subdevice_t *me4600_ai_constructor(uint32_t reg_base, + unsigned int channels, + unsigned int ranges, + int isolated, + int sh, + int irq, + spinlock_t * ctrl_reg_lock, + struct workqueue_struct + *me4600_wq); + +#endif +#endif |