diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/sil-sii8620.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/sil-sii8620.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/sil-sii8620.c b/drivers/gpu/drm/bridge/sil-sii8620.c index 75867c0735de..cde007489375 100644 --- a/drivers/gpu/drm/bridge/sil-sii8620.c +++ b/drivers/gpu/drm/bridge/sil-sii8620.c @@ -78,12 +78,15 @@ struct sii8620_mt_msg; typedef void (*sii8620_mt_msg_cb)(struct sii8620 *ctx, struct sii8620_mt_msg *msg); +typedef void (*sii8620_cb)(struct sii8620 *ctx, int ret); + struct sii8620_mt_msg { struct list_head node; u8 reg[4]; u8 ret; sii8620_mt_msg_cb send; sii8620_mt_msg_cb recv; + sii8620_cb continuation; }; static const u8 sii8620_i2c_page[] = { @@ -258,6 +261,8 @@ static void sii8620_mt_work(struct sii8620 *ctx) node); if (msg->recv) msg->recv(ctx, msg); + if (msg->continuation) + msg->continuation(ctx, msg->ret); list_del(&msg->node); kfree(msg); } @@ -310,6 +315,21 @@ static struct sii8620_mt_msg *sii8620_mt_msg_new(struct sii8620 *ctx) return msg; } +static void sii8620_mt_set_cont(struct sii8620 *ctx, sii8620_cb cont) +{ + struct sii8620_mt_msg *msg; + + if (ctx->error) + return; + + if (list_empty(&ctx->mt_queue)) { + ctx->error = -EINVAL; + return; + } + msg = list_last_entry(&ctx->mt_queue, struct sii8620_mt_msg, node); + msg->continuation = cont; +} + static void sii8620_mt_msc_cmd(struct sii8620 *ctx, u8 cmd, u8 arg1, u8 arg2) { struct sii8620_mt_msg *msg = sii8620_mt_msg_new(ctx); |