dmaengine: shdma: add .needs_tend_set / .no_dmars flags
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
index 6a21cd8..0f3ec8d 100644
--- a/drivers/dma/shdma.c
+++ b/drivers/dma/shdma.c
@@ -194,6 +194,9 @@
struct sh_dmae_device *shdev = to_sh_dev(sh_chan);
u32 chcr = chcr_read(sh_chan);
+ if (shdev->pdata->needs_tend_set)
+ sh_dmae_writel(sh_chan, 0xFFFFFFFF, TEND);
+
chcr |= CHCR_DE | shdev->chcr_ie_bit;
chcr_write(sh_chan, chcr & ~CHCR_TE);
}
@@ -242,6 +245,9 @@
if (dmae_is_busy(sh_chan))
return -EBUSY;
+ if (pdata->no_dmars)
+ return 0;
+
/* in the case of a missing DMARS resource use first memory window */
if (!addr)
addr = (u16 __iomem *)shdev->chan_reg;