gpio_mm.c File Reference

#include <linux/types.h>
#include <linux/module.h>
#include <linux/version.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/fs.h>
#include <linux/workqueue.h>
#include <linux/poll.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <asm/io.h>
#include "gpio_mm.h"
#include <nidas/linux/ver_macros.h>
#include <nidas/linux/klog.h>
#include <nidas/linux/util.h>
#include <nidas/linux/isa_bus.h>
#include <nidas/linux/Revision.h>

Macros
#define	IRQF_SHARED   SA_SHIRQ
#define	REPO_REVISION   "unknown"
#define	BUFFER_POLL
#define	BUFFER_POLL

Functions
	module_param_array (ioports_dio, uint, numboards_dio, 0)
	module_param_array (ioports, uint, numboards, 0)
	module_param_array (irqa, int, numirqa, 0)
	module_param_array (irqb, int, numirqb, 0)
	module_param (clockHZ, int, 0)
	MODULE_AUTHOR ("Gordon Maclean <maclean@ucar.edu>")
	MODULE_LICENSE ("Dual BSD/GPL")
	MODULE_DESCRIPTION ("Driver for Diamond GPIO card")
	MODULE_VERSION (REPO_REVISION)
static int	gcd (unsigned int a, unsigned int b)
static void	gpio_mm_set_master_mode (struct GPIO_MM *brd, int chip)
static void	gpio_mm_setup_counter (struct GPIO_MM *brd, int icntr, unsigned char lmode, unsigned char hmode)
static void	gpio_mm_cmd_counter (struct GPIO_MM *brd, int icntr, unsigned char cmd)
static void	gpio_mm_cmd_counters (struct GPIO_MM *brd, int icntr1, int icntr2, unsigned char cmd)
static void	gpio_mm_arm_counter (struct GPIO_MM *brd, int icntr)
static void	gpio_mm_arm_counters (struct GPIO_MM *brd, int icntr1, int icntr2)
static void	gpio_mm_load_counter (struct GPIO_MM *brd, int icntr)
static void	gpio_mm_load_arm_counter (struct GPIO_MM *brd, int icntr)
static void	gpio_mm_load_arm_counters (struct GPIO_MM *brd, int icntr1, int icntr2)
static void	gpio_mm_disarm_counter (struct GPIO_MM *brd, int icntr)
static void	gpio_mm_disarm_counters (struct GPIO_MM *brd, int icntr1, int icntr2)
static void	gpio_mm_disarm_save_counter (struct GPIO_MM *brd, int icntr)
static void	gpio_mm_disarm_save_counters (struct GPIO_MM *brd, int icntr1, int icntr2)
static void	gpio_mm_set_reg (struct GPIO_MM *brd, int icntr, unsigned short val, unsigned char reg)
static unsigned short	gpio_mm_get_reg (struct GPIO_MM *brd, int icntr, unsigned char reg)
static void	gpio_mm_set_load_reg (struct GPIO_MM *brd, int icntr, unsigned short val)
static void	gpio_mm_set_hold_reg (struct GPIO_MM *brd, int icntr, unsigned short val)
static unsigned short	gpio_mm_get_hold_reg (struct GPIO_MM *brd, int icntr)
static void	gpio_mm_set_toggle_out (struct GPIO_MM *brd, int icntr)
static void	gpio_mm_clear_toggle_out (struct GPIO_MM *brd, int icntr)
static unsigned char	gpio_mm_get_output_status (struct GPIO_MM *brd, int icntr)
static int	compute_timer_ticks (struct list_head *cblist, unsigned int *maxUsecsp)
static int	check_timer_interval (struct GPIO_MM *brd, unsigned int usecs)
static void	set_ticks (struct GPIO_MM_timer *timer, unsigned int usecs, unsigned int maxUsecs, unsigned short *initial_ticsp)
static void	start_gpio_timer (struct GPIO_MM_timer *timer, unsigned int usecs, unsigned int maxUsecs)
static void	stop_gpio_timer (struct GPIO_MM_timer *timer)
static void	handlePendingCallbacks (struct GPIO_MM_timer *timer)
static void	free_timer_callbacks (struct GPIO_MM_timer *timer)
static void	gpio_mm_timer_bottom_half (unsigned long dev)
static irqreturn_t	gpio_mm_timer_irq_handler (int irq, void *dev_id)
static irqreturn_t	gpio_mm_event_irq_handler (int irq, void *dev_id)
static int	gpio_mm_set_irq_user (struct GPIO_MM *brd, int irq_ab, irq_handler_t handler)
static int	gpio_mm_remove_irq_user (struct GPIO_MM *brd, int irq_ab)
static int	gpio_mm_set_timer_irq_user (struct GPIO_MM *brd)
static int	gpio_mm_remove_timer_irq_user (struct GPIO_MM *brd)
static int	gpio_mm_reserve_cntrs (struct GPIO_MM *brd, int ic1, int icn)
static int	gpio_mm_free_cntrs (struct GPIO_MM *brd, int ic0, int icn)
static int	get_pulse_counter (struct GPIO_MM_fcntr *fcntr)
static int	gpio_mm_setup_fcntr (struct GPIO_MM_fcntr *fcntr)
static int	gpio_mm_stop_fcntr (struct GPIO_MM_fcntr *fcntr)
static void	fcntr_timer_callback_func (void *privateData)
static int	start_fcntr (struct GPIO_MM_fcntr *fcntr, struct GPIO_MM_fcntr_config *cfg)
static int	stop_fcntr (struct GPIO_MM_fcntr *fcntr)
static int	gpio_mm_open_fcntr (struct inode *inode, struct file *filp)
static int	gpio_mm_release_fcntr (struct inode *inode, struct file *filp)
static ssize_t	gpio_mm_read_fcntr (struct file *filp, char __user *buf, size_t count, loff_t *f_pos)
static long	gpio_mm_ioctl_fcntr (struct file *filp, unsigned int cmd, unsigned long arg)
unsigned int	gpio_mm_poll_fcntr (struct file *filp, poll_table *wait)
static int	gpio_mm_setup_event (struct GPIO_MM_event *event)
static int	gpio_mm_stop_event (struct GPIO_MM_event *event)
static int	start_event (struct GPIO_MM_event *event, struct GPIO_MM_event_config *cfg)
static int	stop_event (struct GPIO_MM_event *event)
static int	gpio_mm_open_event (struct inode *inode, struct file *filp)
static int	gpio_mm_release_event (struct inode *inode, struct file *filp)
static ssize_t	gpio_mm_read_event (struct file *filp, char __user *buf, size_t count, loff_t *f_pos)
static long	gpio_mm_ioctl_event (struct file *filp, unsigned int cmd, unsigned long arg)
unsigned int	gpio_mm_poll_event (struct file *filp, poll_table *wait)
static int	cleanup_fcntrs (struct GPIO_MM *brd)
static int	init_fcntrs (struct GPIO_MM *brd)
static int	cleanup_event (struct GPIO_MM *brd)
static int	init_event (struct GPIO_MM *brd)
static struct gpio_timer_callback *	register_gpio_timer_callback_priv (struct GPIO_MM_timer *timer, gpio_timer_callback_func_t callback, unsigned int usecs, void *privateData, int *errp)
static long	unregister_gpio_timer_callback_priv (struct GPIO_MM_timer *timer, struct gpio_timer_callback *cb, int wait)
struct gpio_timer_callback *	register_gpio_timer_callback (gpio_timer_callback_func_t callback, unsigned int usecs, void *privateData, int *errp)
	EXPORT_SYMBOL (register_gpio_timer_callback)
long	unregister_gpio_timer_callback (struct gpio_timer_callback *cb, int wait)
	EXPORT_SYMBOL (unregister_gpio_timer_callback)
static void	cleanup_gpio_timer (struct GPIO_MM_timer *timer)
static struct GPIO_MM_timer *	init_gpio_timer (struct GPIO_MM *brd)
static void	gpio_mm_cleanup (void)
static int __init	gpio_mm_init (void)
	module_init (gpio_mm_init)
	module_exit (gpio_mm_cleanup)

Variables
static const char *	driver_name = "gpio_mm"
static unsigned int	ioports [MAX_GPIO_MM_BOARDS] ={ 0x080, 0, 0, 0 , 0}
static unsigned int	ioports_dio [MAX_GPIO_MM_BOARDS] = { 0x040, 0, 0, 0, 0 }
static int	numboards = 0
static int	numboards_alloc = 0
static int	numboards_dio = 0
static int	irqa [MAX_GPIO_MM_BOARDS] = { 3, 0, 0, 0, 0 }
static int	irqb [MAX_GPIO_MM_BOARDS] = { 0, 0, 0, 0, 0 }
static int	numirqa = 0
static int	numirqb = 0
static int	clockHZ = GPIO_MM_CT_CLOCK_HZ
static dev_t	gpio_mm_device = MKDEV(0,0)
static struct GPIO_MM *	board = 0
static struct class *	gpio_mm_class
static struct file_operations	fcntr_fops
static struct file_operations	event_fops

Macro Definition Documentation

BUFFER_POLL [1/2]

#define BUFFER_POLL

BUFFER_POLL [2/2]

#define BUFFER_POLL

IRQF_SHARED

#define IRQF_SHARED   SA_SHIRQ

Referenced by gpio_mm_set_irq_user().

REPO_REVISION

#define REPO_REVISION   "unknown"

Referenced by gpio_mm_init().

Function Documentation

check_timer_interval()

static int check_timer_interval ( struct GPIO_MM * brd, unsigned int usecs )

static

References clockHZ, GPIO_MM_CT_CLOCK_HZ, and USECS_PER_SEC.

Referenced by register_gpio_timer_callback_priv().

cleanup_event()

static int cleanup_event ( struct GPIO_MM * brd )

static

References free_dsm_circ_buf(), gpio_mm_class, and stop_event().

Referenced by gpio_mm_cleanup().

cleanup_fcntrs()

static int cleanup_fcntrs ( struct GPIO_MM * brd )

static

References free_dsm_circ_buf(), gpio_mm_class, and stop_fcntr().

Referenced by gpio_mm_cleanup().

cleanup_gpio_timer()

static void cleanup_gpio_timer ( struct GPIO_MM_timer * timer )

static

References free_timer_callbacks(), gpio_mm_remove_timer_irq_user(), and stop_gpio_timer().

Referenced by gpio_mm_cleanup().

compute_timer_ticks()

static int compute_timer_ticks ( struct list_head * cblist, unsigned int * maxUsecsp )

static

References gcd().

Referenced by handlePendingCallbacks().

EXPORT_SYMBOL() [1/2]

EXPORT_SYMBOL

(

register_gpio_timer_callback

)

EXPORT_SYMBOL() [2/2]

EXPORT_SYMBOL

(

unregister_gpio_timer_callback

)

fcntr_timer_callback_func()

static void fcntr_timer_callback_func ( void * privateData )

static

References get_pulse_counter(), gpio_mm_disarm_save_counter(), gpio_mm_disarm_save_counters(), gpio_mm_get_hold_reg(), gpio_mm_get_output_status(), gpio_mm_load_arm_counter(), gpio_mm_load_arm_counters(), gpio_mm_set_hold_reg(), and gpio_mm_set_toggle_out().

Referenced by start_fcntr().

free_timer_callbacks()

static void free_timer_callbacks ( struct GPIO_MM_timer * timer )

static

Referenced by cleanup_gpio_timer().

gcd()

static int gcd ( unsigned int a, unsigned int b )

static

References gcd().

Referenced by compute_timer_ticks(), and gcd().

get_pulse_counter()

static int get_pulse_counter ( struct GPIO_MM_fcntr * fcntr )

static

Referenced by fcntr_timer_callback_func(), gpio_mm_setup_fcntr(), and gpio_mm_stop_fcntr().

gpio_mm_arm_counter()

static void gpio_mm_arm_counter ( struct GPIO_MM * brd, int icntr )

inlinestatic

References CTS9513_ARM, and gpio_mm_cmd_counter().

Referenced by start_gpio_timer().

gpio_mm_arm_counters()

static void gpio_mm_arm_counters ( struct GPIO_MM * brd, int icntr1, int icntr2 )

inlinestatic

References CTS9513_ARM, and gpio_mm_cmd_counters().

gpio_mm_cleanup()

static void gpio_mm_cleanup ( void )

static

References board, cleanup_event(), cleanup_fcntrs(), cleanup_gpio_timer(), gpio_mm_class, gpio_mm_device, GPIO_MM_RESET_ID, numboards, numboards_alloc, and unregister_gpio_timer_callback().

Referenced by gpio_mm_init().

gpio_mm_clear_toggle_out()

static void gpio_mm_clear_toggle_out ( struct GPIO_MM * brd, int icntr )

static

References CTS9513_CLEAR_TOGGLE_OUT, GPIO_MM_9513_PTR, and GPIO_MM_CNTR_PER_CHIP.

gpio_mm_cmd_counter()

static void gpio_mm_cmd_counter ( struct GPIO_MM * brd, int icntr, unsigned char cmd )

static

References GPIO_MM_9513_PTR, and GPIO_MM_CNTR_PER_CHIP.

Referenced by gpio_mm_arm_counter(), gpio_mm_disarm_counter(), gpio_mm_disarm_save_counter(), gpio_mm_load_arm_counter(), and gpio_mm_load_counter().

gpio_mm_cmd_counters()

static void gpio_mm_cmd_counters ( struct GPIO_MM * brd, int icntr1, int icntr2, unsigned char cmd )

static

References GPIO_MM_9513_PTR, and GPIO_MM_CNTR_PER_CHIP.

Referenced by gpio_mm_arm_counters(), gpio_mm_disarm_counters(), gpio_mm_disarm_save_counters(), and gpio_mm_load_arm_counters().

gpio_mm_disarm_counter()

static void gpio_mm_disarm_counter ( struct GPIO_MM * brd, int icntr )

inlinestatic

References CTS9513_DISARM, and gpio_mm_cmd_counter().

Referenced by gpio_mm_stop_fcntr(), and stop_gpio_timer().

gpio_mm_disarm_counters()

static void gpio_mm_disarm_counters ( struct GPIO_MM * brd, int icntr1, int icntr2 )

inlinestatic

References CTS9513_DISARM, and gpio_mm_cmd_counters().

Referenced by gpio_mm_stop_fcntr().

gpio_mm_disarm_save_counter()

static void gpio_mm_disarm_save_counter ( struct GPIO_MM * brd, int icntr )

static

References CTS9513_DISARM_SAVE, and gpio_mm_cmd_counter().

Referenced by fcntr_timer_callback_func().

gpio_mm_disarm_save_counters()

static void gpio_mm_disarm_save_counters ( struct GPIO_MM * brd, int icntr1, int icntr2 )

inlinestatic

References CTS9513_DISARM_SAVE, and gpio_mm_cmd_counters().

Referenced by fcntr_timer_callback_func().

gpio_mm_event_irq_handler()

static irqreturn_t gpio_mm_event_irq_handler ( int irq, void * dev_id )

static

References GPIO_MM_IRQ_CTL_STATUS.

Referenced by gpio_mm_setup_event().

gpio_mm_free_cntrs()

static int gpio_mm_free_cntrs ( struct GPIO_MM * brd, int ic0, int icn )

static

Referenced by gpio_mm_stop_fcntr().

gpio_mm_get_hold_reg()

static unsigned short gpio_mm_get_hold_reg ( struct GPIO_MM * brd, int icntr )

inlinestatic

References CTS9513_DPTR_CNTR1_HOLD, and gpio_mm_get_reg().

Referenced by fcntr_timer_callback_func().

gpio_mm_get_output_status()

static unsigned char gpio_mm_get_output_status ( struct GPIO_MM * brd, int icntr )

static

References CTS9513_DPTR_STATUS, GPIO_MM_9513_DATA, GPIO_MM_9513_PTR, and GPIO_MM_CNTR_PER_CHIP.

Referenced by fcntr_timer_callback_func().

gpio_mm_get_reg()

static unsigned short gpio_mm_get_reg ( struct GPIO_MM * brd, int icntr, unsigned char reg )

static

References GPIO_MM_9513_DATA, GPIO_MM_9513_PTR, and GPIO_MM_CNTR_PER_CHIP.

Referenced by gpio_mm_get_hold_reg().

gpio_mm_init()

static int __init gpio_mm_init ( void )

static

References board, clockHZ, CTS9513_MMH_BCD, CTS9513_MMH_DP_ENABLE, CTS9513_MMH_FOUT_DIV1, CTS9513_MMH_FOUT_ON, CTS9513_MMH_WIDTH_8, CTS9513_MML_FOUT_G2, CTS9513_MML_NO_COMP, driver_name, err, gpio_mm_class, gpio_mm_cleanup(), GPIO_MM_CT_CLOCK_HZ, gpio_mm_device, GPIO_MM_FPGA_REV, GPIO_MM_IRQ_CTL_STATUS, gpio_mm_reserve_cntrs(), GPIO_MM_RESET_ID, gpio_mm_set_master_mode(), init_event(), init_fcntrs(), init_gpio_timer(), ioports, ioports_dio, irqa, irqb, numboards, numboards_alloc, numboards_dio, register_gpio_timer_callback(), REPO_REVISION, and USECS_PER_SEC.

gpio_mm_ioctl_event()

static long gpio_mm_ioctl_event ( struct file * filp, unsigned int cmd, unsigned long arg )

static

References err, GPIO_MM_EVENT_GET_STATUS, GPIO_MM_EVENT_START, GPIO_MM_IOC_MAGIC, GPIO_MM_IOC_MAXNR, and start_event().

gpio_mm_ioctl_fcntr()

static long gpio_mm_ioctl_fcntr ( struct file * filp, unsigned int cmd, unsigned long arg )

static

References err, GPIO_MM_FCNTR_GET_STATUS, GPIO_MM_FCNTR_START, GPIO_MM_IOC_MAGIC, GPIO_MM_IOC_MAXNR, and start_fcntr().

gpio_mm_load_arm_counter()

static void gpio_mm_load_arm_counter ( struct GPIO_MM * brd, int icntr )

inlinestatic

References CTS9513_LOAD_ARM, and gpio_mm_cmd_counter().

Referenced by fcntr_timer_callback_func(), and gpio_mm_setup_fcntr().

gpio_mm_load_arm_counters()

static void gpio_mm_load_arm_counters ( struct GPIO_MM * brd, int icntr1, int icntr2 )

inlinestatic

References CTS9513_LOAD_ARM, and gpio_mm_cmd_counters().

Referenced by fcntr_timer_callback_func(), and gpio_mm_setup_fcntr().

gpio_mm_load_counter()

static void gpio_mm_load_counter ( struct GPIO_MM * brd, int icntr )

static

References CTS9513_LOAD, and gpio_mm_cmd_counter().

Referenced by start_gpio_timer().

gpio_mm_open_event()

static int gpio_mm_open_event ( struct inode * inode, struct file * filp )

static

References board, and numboards.

gpio_mm_open_fcntr()

static int gpio_mm_open_fcntr ( struct inode * inode, struct file * filp )

static

References board, and numboards.

gpio_mm_poll_event()

unsigned int gpio_mm_poll_event	(	struct file *	filp,
		poll_table *	wait )

gpio_mm_poll_fcntr()

unsigned int gpio_mm_poll_fcntr	(	struct file *	filp,
		poll_table *	wait )

gpio_mm_read_event()

static ssize_t gpio_mm_read_event ( struct file * filp, char __user * buf, size_t count, loff_t * f_pos )

static

References nidas_circbuf_read().

gpio_mm_read_fcntr()

static ssize_t gpio_mm_read_fcntr ( struct file * filp, char __user * buf, size_t count, loff_t * f_pos )

static

References nidas_circbuf_read().

gpio_mm_release_event()

static int gpio_mm_release_event ( struct inode * inode, struct file * filp )

static

References board, numboards, and stop_event().

gpio_mm_release_fcntr()

static int gpio_mm_release_fcntr ( struct inode * inode, struct file * filp )

static

References board, numboards, and stop_fcntr().

gpio_mm_remove_irq_user()

static int gpio_mm_remove_irq_user ( struct GPIO_MM * brd, int irq_ab )

static

Referenced by gpio_mm_remove_timer_irq_user(), and gpio_mm_stop_event().

gpio_mm_remove_timer_irq_user()

static int gpio_mm_remove_timer_irq_user ( struct GPIO_MM * brd )

static

References gpio_mm_remove_irq_user().

Referenced by cleanup_gpio_timer().

gpio_mm_reserve_cntrs()

static int gpio_mm_reserve_cntrs ( struct GPIO_MM * brd, int ic1, int icn )

static

Referenced by gpio_mm_init(), and gpio_mm_setup_fcntr().

gpio_mm_set_hold_reg()

static void gpio_mm_set_hold_reg ( struct GPIO_MM * brd, int icntr, unsigned short val )

inlinestatic

References CTS9513_DPTR_CNTR1_HOLD, and gpio_mm_set_reg().

Referenced by fcntr_timer_callback_func(), and gpio_mm_setup_fcntr().

gpio_mm_set_irq_user()

static int gpio_mm_set_irq_user ( struct GPIO_MM * brd, int irq_ab, irq_handler_t handler )

static

References driver_name, and IRQF_SHARED.

Referenced by gpio_mm_set_timer_irq_user(), and gpio_mm_setup_event().

gpio_mm_set_load_reg()

static void gpio_mm_set_load_reg ( struct GPIO_MM * brd, int icntr, unsigned short val )

inlinestatic

References CTS9513_DPTR_CNTR1_LOAD, and gpio_mm_set_reg().

Referenced by gpio_mm_setup_fcntr(), and start_gpio_timer().

gpio_mm_set_master_mode()

static void gpio_mm_set_master_mode ( struct GPIO_MM * brd, int chip )

static

References CTS9513_DPTR_MASTER_MODE, GPIO_MM_9513_DATA, and GPIO_MM_9513_PTR.

Referenced by gpio_mm_init().

gpio_mm_set_reg()

static void gpio_mm_set_reg ( struct GPIO_MM * brd, int icntr, unsigned short val, unsigned char reg )

static

References GPIO_MM_9513_DATA, GPIO_MM_9513_PTR, and GPIO_MM_CNTR_PER_CHIP.

Referenced by gpio_mm_set_hold_reg(), and gpio_mm_set_load_reg().

gpio_mm_set_timer_irq_user()

static int gpio_mm_set_timer_irq_user ( struct GPIO_MM * brd )

static

References gpio_mm_set_irq_user(), and gpio_mm_timer_irq_handler().

Referenced by init_gpio_timer().

gpio_mm_set_toggle_out()

static void gpio_mm_set_toggle_out ( struct GPIO_MM * brd, int icntr )

static

References CTS9513_SET_TOGGLE_OUT, GPIO_MM_9513_PTR, and GPIO_MM_CNTR_PER_CHIP.

Referenced by fcntr_timer_callback_func(), and gpio_mm_setup_fcntr().

gpio_mm_setup_counter()

static void gpio_mm_setup_counter ( struct GPIO_MM * brd, int icntr, unsigned char lmode, unsigned char hmode )

static

References CTS9513_DPTR_CNTR1_MODE, GPIO_MM_9513_DATA, GPIO_MM_9513_PTR, GPIO_MM_CNTR_PER_BOARD, and GPIO_MM_CNTR_PER_CHIP.

Referenced by gpio_mm_setup_fcntr(), and start_gpio_timer().

gpio_mm_setup_event()

static int gpio_mm_setup_event ( struct GPIO_MM_event * event )

static

References gpio_mm_event_irq_handler(), GPIO_MM_IRQ_CTL_STATUS, GPIO_MM_IRQ_SRC, and gpio_mm_set_irq_user().

Referenced by start_event().

gpio_mm_setup_fcntr()

static int gpio_mm_setup_fcntr ( struct GPIO_MM_fcntr * fcntr )

static

References CTS9513_CMH_EDGE_RISING, CTS9513_CMH_GATE_LO_GN, CTS9513_CMH_NO_GATE, CTS9513_CMH_SRC_F1, CTS9513_CMH_SRC_S1, CTS9513_CMH_SRC_TCNM1, CTS9513_CML_CNT_BIN, CTS9513_CML_CNT_DN, CTS9513_CML_CNT_UP, CTS9513_CML_GATE_NORETRIG, CTS9513_CML_ONCE, CTS9513_CML_OUT_HIGH_ON_TC, CTS9513_CML_OUT_LOW, CTS9513_CML_OUT_TC_TOGGLE, CTS9513_CML_RELOAD_BOTH, CTS9513_CML_RELOAD_LOAD, CTS9513_CML_REPEAT, get_pulse_counter(), GPIO_MM_CNTR_PER_CHIP, gpio_mm_load_arm_counter(), gpio_mm_load_arm_counters(), gpio_mm_reserve_cntrs(), gpio_mm_set_hold_reg(), gpio_mm_set_load_reg(), gpio_mm_set_toggle_out(), and gpio_mm_setup_counter().

Referenced by start_fcntr().

gpio_mm_stop_event()

static int gpio_mm_stop_event ( struct GPIO_MM_event * event )

static

References GPIO_MM_IRQ_CTL_STATUS, and gpio_mm_remove_irq_user().

Referenced by stop_event().

gpio_mm_stop_fcntr()

static int gpio_mm_stop_fcntr ( struct GPIO_MM_fcntr * fcntr )

static

References get_pulse_counter(), gpio_mm_disarm_counter(), gpio_mm_disarm_counters(), and gpio_mm_free_cntrs().

Referenced by stop_fcntr().

gpio_mm_timer_bottom_half()

static void gpio_mm_timer_bottom_half ( unsigned long dev )

static

References handlePendingCallbacks().

Referenced by init_gpio_timer().

gpio_mm_timer_irq_handler()

static irqreturn_t gpio_mm_timer_irq_handler ( int irq, void * dev_id )

static

References GPIO_MM_IRQ_CTL_STATUS.

Referenced by gpio_mm_set_timer_irq_user().

handlePendingCallbacks()

static void handlePendingCallbacks ( struct GPIO_MM_timer * timer )

static

References compute_timer_ticks(), set_ticks(), start_gpio_timer(), and stop_gpio_timer().

init_event()

static int init_event ( struct GPIO_MM * brd )

static

References alloc_dsm_circ_buf(), event_fops, gpio_mm_class, and gpio_mm_device.

Referenced by gpio_mm_init().

init_fcntrs()

static int init_fcntrs ( struct GPIO_MM * brd )

static

References alloc_dsm_circ_buf(), fcntr_fops, gpio_mm_class, and gpio_mm_device.

Referenced by gpio_mm_init().

init_gpio_timer()

static struct GPIO_MM_timer * init_gpio_timer ( struct GPIO_MM * brd )

static

References CALLBACK_POOL_SIZE, gpio_mm_set_timer_irq_user(), and gpio_mm_timer_bottom_half().

Referenced by gpio_mm_init().

MODULE_AUTHOR()

MODULE_AUTHOR

(

"Gordon Maclean <maclean@ucar.edu>"

)

MODULE_DESCRIPTION()

MODULE_DESCRIPTION

(

"Driver for Diamond GPIO card"

)

module_exit()

module_exit

(

gpio_mm_cleanup

)

module_init()

module_init

(

gpio_mm_init

)

MODULE_LICENSE()

MODULE_LICENSE

(

"Dual BSD/GPL"

)

module_param()

module_param	(	clockHZ	,
		int	,
		0	)

module_param_array() [1/4]

module_param_array	(	ioports	,
		uint	,
		numboards	,
		0	)

module_param_array() [2/4]

module_param_array	(	ioports_dio	,
		uint	,
		numboards_dio	,
		0	)

module_param_array() [3/4]

module_param_array	(	irqa	,
		int	,
		numirqa	,
		0	)

module_param_array() [4/4]

module_param_array	(	irqb	,
		int	,
		numirqb	,
		0	)

MODULE_VERSION()

MODULE_VERSION

(

REPO_REVISION

)

register_gpio_timer_callback()

struct gpio_timer_callback * register_gpio_timer_callback	(	gpio_timer_callback_func_t	callback,
		unsigned int	usecs,
		void *	privateData,
		int *	errp )

References board, and register_gpio_timer_callback_priv().

Referenced by gpio_mm_init(), and start_fcntr().

register_gpio_timer_callback_priv()

static struct gpio_timer_callback * register_gpio_timer_callback_priv ( struct GPIO_MM_timer * timer, gpio_timer_callback_func_t callback, unsigned int usecs, void * privateData, int * errp )

static

References check_timer_interval(), and start_gpio_timer().

Referenced by register_gpio_timer_callback(), and start_fcntr().

set_ticks()

static void set_ticks ( struct GPIO_MM_timer * timer, unsigned int usecs, unsigned int maxUsecs, unsigned short * initial_ticsp )

static

References clockHZ, NSECS_PER_USEC, and USECS_PER_SEC.

Referenced by handlePendingCallbacks(), and start_gpio_timer().

start_event()

static int start_event ( struct GPIO_MM_event * event, struct GPIO_MM_event_config * cfg )

static

References gpio_mm_setup_event(), GPIO_MM_event_config::latencyUsecs, and USECS_PER_SEC.

Referenced by gpio_mm_ioctl_event().

start_fcntr()

static int start_fcntr ( struct GPIO_MM_fcntr * fcntr, struct GPIO_MM_fcntr_config * cfg )

static

References fcntr_timer_callback_func(), gpio_mm_setup_fcntr(), GPIO_MM_fcntr_config::latencyUsecs, GPIO_MM_fcntr_config::numPulses, GPIO_MM_fcntr_config::outputPeriodUsec, register_gpio_timer_callback(), register_gpio_timer_callback_priv(), and USECS_PER_SEC.

Referenced by gpio_mm_ioctl_fcntr().

start_gpio_timer()

static void start_gpio_timer ( struct GPIO_MM_timer * timer, unsigned int usecs, unsigned int maxUsecs )

static

References clockHZ, CTS9513_CMH_EDGE_RISING, CTS9513_CMH_NO_GATE, CTS9513_CMH_SRC_F1, CTS9513_CML_CNT_BIN, CTS9513_CML_CNT_DN, CTS9513_CML_GATE_NORETRIG, CTS9513_CML_OUT_HIGH_ON_TC, CTS9513_CML_RELOAD_LOAD, CTS9513_CML_REPEAT, gpio_mm_arm_counter(), GPIO_MM_IRQ_CTL_STATUS, GPIO_MM_IRQ_SRC, gpio_mm_load_counter(), gpio_mm_set_load_reg(), gpio_mm_setup_counter(), set_ticks(), and USECS_PER_SEC.

Referenced by handlePendingCallbacks(), and register_gpio_timer_callback_priv().

stop_event()

static int stop_event ( struct GPIO_MM_event * event )

static

References gpio_mm_stop_event().

Referenced by cleanup_event(), and gpio_mm_release_event().

stop_fcntr()

static int stop_fcntr ( struct GPIO_MM_fcntr * fcntr )

static

References gpio_mm_stop_fcntr(), unregister_gpio_timer_callback(), and unregister_gpio_timer_callback_priv().

Referenced by cleanup_fcntrs(), and gpio_mm_release_fcntr().

stop_gpio_timer()

static void stop_gpio_timer ( struct GPIO_MM_timer * timer )

static

References gpio_mm_disarm_counter(), and GPIO_MM_IRQ_CTL_STATUS.

Referenced by cleanup_gpio_timer(), and handlePendingCallbacks().

unregister_gpio_timer_callback()

long unregister_gpio_timer_callback	(	struct gpio_timer_callback *	cb,
		int	wait )

References board, and unregister_gpio_timer_callback_priv().

Referenced by gpio_mm_cleanup(), and stop_fcntr().

unregister_gpio_timer_callback_priv()

static long unregister_gpio_timer_callback_priv ( struct GPIO_MM_timer * timer, struct gpio_timer_callback * cb, int wait )

static

Referenced by stop_fcntr(), and unregister_gpio_timer_callback().

Variable Documentation

board

struct GPIO_MM* board = 0

static

Referenced by gpio_mm_cleanup(), gpio_mm_init(), gpio_mm_open_event(), gpio_mm_open_fcntr(), gpio_mm_release_event(), gpio_mm_release_fcntr(), register_gpio_timer_callback(), and unregister_gpio_timer_callback().

clockHZ

int clockHZ = GPIO_MM_CT_CLOCK_HZ

static

Referenced by check_timer_interval(), gpio_mm_init(), set_ticks(), and start_gpio_timer().

driver_name

const char* driver_name = "gpio_mm"

static

Referenced by gpio_mm_init(), and gpio_mm_set_irq_user().

event_fops

struct file_operations event_fops

static

Initial value:

= {
        .owner   = THIS_MODULE,
        .read    = gpio_mm_read_event,
        .poll    = gpio_mm_poll_event,
        .open    = gpio_mm_open_event,
        .unlocked_ioctl   = gpio_mm_ioctl_event,
        .release = gpio_mm_release_event,
        .llseek  = no_llseek,
}

Referenced by init_event().

fcntr_fops

struct file_operations fcntr_fops

static

Initial value:

= {
        .owner   = THIS_MODULE,
        .read    = gpio_mm_read_fcntr,
        .poll    = gpio_mm_poll_fcntr,
        .open    = gpio_mm_open_fcntr,
        .unlocked_ioctl   = gpio_mm_ioctl_fcntr,
        .release = gpio_mm_release_fcntr,
        .llseek  = no_llseek,
}

Referenced by init_fcntrs().

gpio_mm_class

struct class* gpio_mm_class

static

Referenced by cleanup_event(), cleanup_fcntrs(), gpio_mm_cleanup(), gpio_mm_init(), init_event(), and init_fcntrs().

gpio_mm_device

dev_t gpio_mm_device = MKDEV(0,0)

static

Referenced by gpio_mm_cleanup(), gpio_mm_init(), init_event(), and init_fcntrs().

ioports

unsigned int ioports[MAX_GPIO_MM_BOARDS] ={ 0x080, 0, 0, 0 , 0}

static

Referenced by gpio_mm_init().

ioports_dio

unsigned int ioports_dio[MAX_GPIO_MM_BOARDS] = { 0x040, 0, 0, 0, 0 }

static

Referenced by gpio_mm_init().

irqa

int irqa[MAX_GPIO_MM_BOARDS] = { 3, 0, 0, 0, 0 }

static

Referenced by gpio_mm_init().

irqb

int irqb[MAX_GPIO_MM_BOARDS] = { 0, 0, 0, 0, 0 }

static

Referenced by gpio_mm_init().

numboards

int numboards = 0

static

Referenced by gpio_mm_cleanup(), gpio_mm_init(), gpio_mm_open_event(), gpio_mm_open_fcntr(), gpio_mm_release_event(), and gpio_mm_release_fcntr().

numboards_alloc

int numboards_alloc = 0

static

Referenced by gpio_mm_cleanup(), and gpio_mm_init().

numboards_dio

int numboards_dio = 0

static

Referenced by gpio_mm_init().

numirqa

int numirqa = 0

static

numirqb

int numirqb = 0

static