hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

drm/bridge/sii8620: improve gen2 write burst IRQ routine 

The patch adds code to report back feature complete IRQ, and code
to read and drop burst writes from peer.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1485935272-17337-23-git-send-email-a.hajda@samsung.com
This commit is contained in:
Andrzej Hajda 2017-02-01 08:47:49 +01:00 committed by Archit Taneja
parent 269ed8eec9
commit 581a923730
1 changed files with 20 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/gpu/drm/bridge/sil-sii8620.c
View File

@ -1605,12 +1605,31 @@ static void sii8620_irq_disc(struct sii8620 *ctx)
sii8620_write(ctx, REG_CBUS_DISC_INTR0, stat);
}
static void sii8620_read_burst(struct sii8620 *ctx)
{
u8 buf[17];
sii8620_read_buf(ctx, REG_MDT_RCV_READ_PORT, buf, ARRAY_SIZE(buf));
sii8620_write(ctx, REG_MDT_RCV_CTRL, BIT_MDT_RCV_CTRL_MDT_RCV_EN |
BIT_MDT_RCV_CTRL_MDT_DELAY_RCV_EN |
BIT_MDT_RCV_CTRL_MDT_RFIFO_CLR_CUR);
sii8620_readb(ctx, REG_MDT_RFIFO_STAT);
}
static void sii8620_irq_g2wb(struct sii8620 *ctx)
{
u8 stat = sii8620_readb(ctx, REG_MDT_INT_0);
if (stat & BIT_MDT_IDLE_AFTER_HAWB_DISABLE)
dev_dbg(ctx->dev, "HAWB idle\n");
if (sii8620_is_mhl3(ctx))
sii8620_mt_set_int(ctx, MHL_INT_REG(RCHANGE),
MHL_INT_RC_FEAT_COMPLETE);
if (stat & BIT_MDT_RFIFO_DATA_RDY)
sii8620_read_burst(ctx);
if (stat & BIT_MDT_XFIFO_EMPTY)
sii8620_write(ctx, REG_MDT_XMIT_CTRL, 0);
sii8620_write(ctx, REG_MDT_INT_0, stat);
}