drv: bugfix, do not touch burst size dynamically

It is not an IRQ coalescing size, but the size that triggers the dump from the FIFO to the DDR. so, it is internal stuff that does not need to get exposed to the user Signed-off-by: Federico Vaga <federico.vaga@cern.ch>

drv: bugfix, do not touch burst size dynamically
It is not an IRQ coalescing size, but the size that triggers the dump from the FIFO to the DDR. so, it is internal stuff that does not need to get exposed to the user Signed-off-by: Federico Vaga <federico.vaga@cern.ch>
8f34868a · Federico Vaga · 19d22fd4 · 8f34868a
Commit 8f34868a authored Aug 17, 2018 by Federico Vaga
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ft-zio.c kernel/ft-zio.c +0 -49

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--- a/kernel/ft-zio.c
+++ b/kernel/ft-zio.c
@@ -412,20 +412,6 @@ static void ft_zio_update_ctrl(struct zio_cset *cset,
 	v[FT_ATTR_TDC_USER_OFFSET] = st->user_offset;
 }

-static void ft_buffer_burst_size_set(struct fmctdc_dev *ft,
-				     unsigned int chan,
-				     uint32_t size)
-{
-	const uint32_t base = ft->ft_dma_base + (0x40 * chan);
-	uint32_t tmp;
-
-	tmp = ft_ioread(ft, base + TDC_BUF_REG_CSR);
-	tmp &= ~TDC_BUF_CSR_BURST_SIZE_MASK;
-	tmp |= TDC_BUF_CSR_BURST_SIZE_W(size);
-	ft_iowrite(ft, tmp, base + TDC_BUF_REG_CSR);
-}
-
-
 static ZIO_ATTR_DEFINE_STD(ZIO_TRG, ft_trig_std_zattr) = {
 	/* Number of shots */
 	ZIO_ATTR(trig, ZIO_ATTR_TRIG_POST_SAMP, ZIO_RW_PERM, FT_TRIG_POST,
@@ -435,36 +421,12 @@ static ZIO_ATTR_DEFINE_STD(ZIO_TRG, ft_trig_std_zattr) = {
 static int ft_trig_conf_set(struct device *dev, struct zio_attribute *zattr,
 			 uint32_t usr_val)
 {
-	struct zio_ti *ti = to_zio_ti(dev);
-	struct fmctdc_dev *ft = ti->cset->zdev->priv_d;
-
-	switch (zattr->id) {
-	case FT_TRIG_POST:
-		switch (ft->mode) {
-		case FT_ACQ_TYPE_FIFO:
-			break;
-		case FT_ACQ_TYPE_DMA:
-			ft_buffer_burst_size_set(ft, ti->cset->index, usr_val);
-			break;
-		default:
-			return -EINVAL;
-		}
-		break;
-	default:
-		return -EINVAL;
-	}
 	return 0;
 }

 static int ft_trig_info_get(struct device *dev, struct zio_attribute *zattr,
 			 uint32_t *usr_val)
 {
-	switch (zattr->id) {
-	case FT_TRIG_POST:
-		break;
-	default:
-		return -EINVAL;
-	}
 	return 0;
 }

@@ -477,7 +439,6 @@ static struct zio_ti *ft_trig_create(struct zio_trigger_type *trig,
 				 struct zio_cset *cset,
 				 struct zio_control *ctrl, fmode_t flags)
 {
-	struct fmctdc_dev *ft = cset->zdev->priv_d;
 	struct fmctdc_trig *tti;

 	tti = kzalloc(sizeof(*tti), GFP_KERNEL);
@@ -487,16 +448,6 @@ static struct zio_ti *ft_trig_create(struct zio_trigger_type *trig,
 	tti->ti.flags = ZIO_DISABLED;
 	tti->ti.cset = cset;

-	switch (ft->mode) {
-	case FT_ACQ_TYPE_FIFO:
-		break;
-	case FT_ACQ_TYPE_DMA:
-		ft_buffer_burst_size_set(ft, cset->index, FT_TRIG_POST_DEFAULT);
-		break;
-	default:
-		return ERR_PTR(-EINVAL);
-	}
-
 	return &tti->ti;
 }