diff options
| author | Andrzej Hajda <a.hajda@samsung.com> | 2017-02-01 08:47:49 +0100 |
|---|---|---|
| committer | Archit Taneja <architt@codeaurora.org> | 2017-02-02 15:15:30 +0530 |
| commit | 581a923730b41e678579aa268d4155bf345859fd (patch) | |
| tree | 634f1691fcaab3714738b2258f280ae7f6b3fbee /drivers | |
| parent | 269ed8eec9c2e66a00e4c127e4c06bf87d518112 (diff) | |
| download | linux-581a923730b41e678579aa268d4155bf345859fd.tar.bz2 | |
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
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/bridge/sil-sii8620.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/gpu/drm/bridge/sil-sii8620.c b/drivers/gpu/drm/bridge/sil-sii8620.c index fca49f6105df..a0c5499f898b 100644 --- a/drivers/gpu/drm/bridge/sil-sii8620.c +++ b/drivers/gpu/drm/bridge/sil-sii8620.c @@ -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); } |