From ea29c1d563a4d57db1c2955c22468a0947f110b0 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Mon, 15 Sep 2014 13:46:03 +0100 Subject: staging: comedi: add comedi_write_array_to_buffer() The "comedi_fc" module contains a few functions useful to Comedi drivers. Their functionality is being migrated to the core "comedi" module and renamed to start with the prefix `comedi_`. As part of this migration, move `cfc_write_array_to_buffer()` into the core comedi module and rename it to `comedi_write_array_to_buffer()`. Change the external declaration of `cfc_write_array_to_buffer()` into an inline function that calls `comedi_write_array_to_buffer()`. Signed-off-by: Ian Abbott Reviewed-by: H Hartley Sweeten Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/comedi_buf.c | 27 +++++++++++++++++++++++++++ drivers/staging/comedi/comedidev.h | 3 +++ drivers/staging/comedi/drivers/comedi_fc.c | 26 -------------------------- drivers/staging/comedi/drivers/comedi_fc.h | 10 ++++++---- 4 files changed, 36 insertions(+), 30 deletions(-) (limited to 'drivers/staging/comedi') diff --git a/drivers/staging/comedi/comedi_buf.c b/drivers/staging/comedi/comedi_buf.c index df4a9c4bca35..5aa86842fcce 100644 --- a/drivers/staging/comedi/comedi_buf.c +++ b/drivers/staging/comedi/comedi_buf.c @@ -509,3 +509,30 @@ void comedi_buf_memcpy_from(struct comedi_subdevice *s, unsigned int offset, } } EXPORT_SYMBOL_GPL(comedi_buf_memcpy_from); + +/* Writes an array of data points to comedi's buffer */ +unsigned int comedi_write_array_to_buffer(struct comedi_subdevice *s, + const void *data, + unsigned int num_bytes) +{ + struct comedi_async *async = s->async; + unsigned int retval; + + if (num_bytes == 0) + return 0; + + retval = comedi_buf_write_alloc(s, num_bytes); + if (retval != num_bytes) { + dev_warn(s->device->class_dev, "buffer overrun\n"); + async->events |= COMEDI_CB_OVERFLOW; + return 0; + } + + comedi_buf_memcpy_to(s, 0, data, num_bytes); + comedi_buf_write_free(s, num_bytes); + comedi_inc_scan_progress(s, num_bytes); + async->events |= COMEDI_CB_BLOCK; + + return num_bytes; +} +EXPORT_SYMBOL_GPL(comedi_write_array_to_buffer); diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index 796a0a9ab68e..bcc85560c261 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -426,6 +426,9 @@ void comedi_buf_memcpy_to(struct comedi_subdevice *s, unsigned int offset, const void *source, unsigned int num_bytes); void comedi_buf_memcpy_from(struct comedi_subdevice *s, unsigned int offset, void *destination, unsigned int num_bytes); +unsigned int comedi_write_array_to_buffer(struct comedi_subdevice *s, + const void *data, + unsigned int num_bytes); /* drivers.c - general comedi driver functions */ diff --git a/drivers/staging/comedi/drivers/comedi_fc.c b/drivers/staging/comedi/drivers/comedi_fc.c index 6f872207ec3a..d4244ebac4c9 100644 --- a/drivers/staging/comedi/drivers/comedi_fc.c +++ b/drivers/staging/comedi/drivers/comedi_fc.c @@ -22,32 +22,6 @@ #include "comedi_fc.h" -/* Writes an array of data points to comedi's buffer */ -unsigned int cfc_write_array_to_buffer(struct comedi_subdevice *s, - const void *data, unsigned int num_bytes) -{ - struct comedi_async *async = s->async; - unsigned int retval; - - if (num_bytes == 0) - return 0; - - retval = comedi_buf_write_alloc(s, num_bytes); - if (retval != num_bytes) { - dev_warn(s->device->class_dev, "buffer overrun\n"); - async->events |= COMEDI_CB_OVERFLOW; - return 0; - } - - comedi_buf_memcpy_to(s, 0, data, num_bytes); - comedi_buf_write_free(s, num_bytes); - comedi_inc_scan_progress(s, num_bytes); - async->events |= COMEDI_CB_BLOCK; - - return num_bytes; -} -EXPORT_SYMBOL_GPL(cfc_write_array_to_buffer); - unsigned int cfc_read_array_from_buffer(struct comedi_subdevice *s, void *data, unsigned int num_bytes) { diff --git a/drivers/staging/comedi/drivers/comedi_fc.h b/drivers/staging/comedi/drivers/comedi_fc.h index fa3de9e87325..51b3157bd348 100644 --- a/drivers/staging/comedi/drivers/comedi_fc.h +++ b/drivers/staging/comedi/drivers/comedi_fc.h @@ -34,10 +34,12 @@ static inline void cfc_inc_scan_progress(struct comedi_subdevice *s, comedi_inc_scan_progress(s, num_bytes); } -/* Writes an array of data points to comedi's buffer */ -unsigned int cfc_write_array_to_buffer(struct comedi_subdevice *s, - const void *data, - unsigned int num_bytes); +static inline unsigned int cfc_write_array_to_buffer(struct comedi_subdevice *s, + const void *data, + unsigned int num_bytes) +{ + return comedi_write_array_to_buffer(s, data, num_bytes); +} static inline unsigned int cfc_write_to_buffer(struct comedi_subdevice *s, unsigned short data) -- cgit v1.2.3-55-g7522