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FMC ADC 100M 14b 4cha - Software
Commit 37550d62 authored by Federico Vaga's avatar Federico Vaga
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fmc-adc.h: move overflow_detection helper in fmc-adc.h 

Signed-off-by: 's avatarFederico Vaga <federico.vaga@gmail.com>
parent f17ab569
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Showing with 29 additions and 20 deletions
kernel/fa-zio-trg.c
View file @ 37550d62
......@@ -83,25 +83,7 @@ static struct zio_attribute zfat_ext_zattr[] = {
ZIO_PARAM_EXT("tstamp-trg-lst-b", ZIO_RO_PERM, ZFA_UTC_TRIG_FINE, 0),
};
static int zfat_overflow_detection(struct zio_ti *ti, unsigned int addr,
uint32_t val)
{
struct zio_attribute *ti_zattr = ti->zattr_set.std_zattr;
uint32_t pre_t, post_t, nshot_t;
if (!addr)
return 0;
pre_t = addr == ZFAT_PRE ? val : ti_zattr[ZIO_ATTR_TRIG_PRE_SAMP].value;
post_t = addr == ZFAT_POST ? val : ti_zattr[ZIO_ATTR_TRIG_POST_SAMP].value;
nshot_t = addr == ZFAT_SHOTS_NB ? val : ti_zattr[ZIO_ATTR_TRIG_REENABLE].value + 1;
if (((pre_t + post_t) * ti->cset->ssize * nshot_t) >= FA_MAX_ACQ_BYTE) {
dev_err(&ti->head.dev, "cannot acquire, device memory overflow\n");
return -ENOMEM;
}
return 0;
}
/* set a value to a FMC-ADC trigger register */
static int zfat_conf_set(struct device *dev, struct zio_attribute *zattr,
uint32_t usr_val)
......
kernel/fmc-adc.h
View file @ 37550d62
......@@ -293,6 +293,35 @@ enum zfat_irq {
#include <linux/dma-mapping.h>
#include <linux/scatterlist.h>
extern struct zio_trigger_type zfat_type;
static inline int zfat_overflow_detection(struct zio_ti *ti, unsigned int addr,
uint32_t val)
{
struct zio_attribute *ti_zattr = ti->zattr_set.std_zattr;
uint32_t pre_t, post_t, nshot_t;
size_t size;
if (!addr)
return 0;
pre_t = addr == ZFAT_PRE ? val : ti_zattr[ZIO_ATTR_TRIG_PRE_SAMP].value;
post_t = addr == ZFAT_POST ? val : ti_zattr[ZIO_ATTR_TRIG_POST_SAMP].value;
if (ti->cset->trig != &zfat_type)
nshot_t = 1; /* with any other trigger work in one-shot mode */
else
nshot_t = addr == ZFAT_SHOTS_NB ? val :
ti_zattr[ZIO_ATTR_TRIG_N_SHOTS].value;
size = ((pre_t + post_t) * ti->cset->ssize * nshot_t) *
(ti->cset->n_chan - 1);
if (size >= FA_MAX_ACQ_BYTE) {
dev_err(&ti->head.dev, "cannot acquire, device memory overflow\n");
return -ENOMEM;
}
return 0;
}
static inline struct fa_dev *get_zfadc(struct device *dev)
{
switch (to_zio_head(dev)->zobj_type) {
......@@ -346,8 +375,6 @@ static inline void zfa_common_info_get(struct fa_dev *fa,
*usr_val = zio_get_field(&zfad_regs[index], cur);
}
extern struct zio_trigger_type zfat_type;
/* Functions exported by fa-zio.c */
extern int fa_zio_register(void);
......
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