drm/bridge/sii8620: send EMSC features on request
Device should report to the peer which features are really supported.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1485935272-17337-22-git-send-email-a.hajda@samsung.com
diff --git a/drivers/gpu/drm/bridge/sil-sii8620.c b/drivers/gpu/drm/bridge/sil-sii8620.c
index c8d06d6..fca49f6 100644
--- a/drivers/gpu/drm/bridge/sil-sii8620.c
+++ b/drivers/gpu/drm/bridge/sil-sii8620.c
@@ -1676,6 +1676,25 @@
sii8620_mt_set_cont(ctx, sii8620_ecbus_up);
}
+static void sii8620_mhl_burst_emsc_support_set(struct mhl_burst_emsc_support *d,
+ enum mhl_burst_id id)
+{
+ sii8620_mhl_burst_hdr_set(&d->hdr, MHL_BURST_ID_EMSC_SUPPORT);
+ d->num_entries = 1;
+ d->burst_id[0] = cpu_to_be16(id);
+}
+
+static void sii8620_send_features(struct sii8620 *ctx)
+{
+ u8 buf[16];
+
+ sii8620_write(ctx, REG_MDT_XMIT_CTRL, BIT_MDT_XMIT_CTRL_EN
+ | BIT_MDT_XMIT_CTRL_FIXED_BURST_LEN);
+ sii8620_mhl_burst_emsc_support_set((void *)buf,
+ MHL_BURST_ID_HID_PAYLOAD);
+ sii8620_write_buf(ctx, REG_MDT_XMIT_WRITE_PORT, buf, ARRAY_SIZE(buf));
+}
+
static void sii8620_msc_mr_set_int(struct sii8620 *ctx)
{
u8 ints[MHL_INT_SIZE];
@@ -1696,10 +1715,10 @@
break;
}
}
- if (ints[MHL_INT_RCHANGE] & MHL_INT_RC_FEAT_REQ) {
- sii8620_mt_set_int(ctx, MHL_INT_REG(RCHANGE),
- MHL_INT_RC_FEAT_COMPLETE);
- }
+ if (ints[MHL_INT_RCHANGE] & MHL_INT_RC_FEAT_REQ)
+ sii8620_send_features(ctx);
+ if (ints[MHL_INT_RCHANGE] & MHL_INT_RC_FEAT_COMPLETE)
+ sii8620_edid_read(ctx, 0);
}
static struct sii8620_mt_msg *sii8620_msc_msg_first(struct sii8620 *ctx)
diff --git a/drivers/gpu/drm/bridge/sil-sii8620.h b/drivers/gpu/drm/bridge/sil-sii8620.h
index 613943a..312b07f 100644
--- a/drivers/gpu/drm/bridge/sil-sii8620.h
+++ b/drivers/gpu/drm/bridge/sil-sii8620.h
@@ -1298,14 +1298,14 @@
/* MDT Transmit Control, default value: 0x70 */
#define REG_MDT_XMIT_CTRL 0x0588
-#define BIT_MDT_XMIT_CTRL_MDT_XMIT_EN BIT(7)
-#define BIT_MDT_XMIT_CTRL_MDT_XMIT_CMD_MERGE_EN BIT(6)
-#define BIT_MDT_XMIT_CTRL_MDT_XMIT_FIXED_BURST_LEN BIT(5)
-#define BIT_MDT_XMIT_CTRL_MDT_XMIT_FIXED_AID BIT(4)
-#define BIT_MDT_XMIT_CTRL_MDT_XMIT_SINGLE_RUN_EN BIT(3)
-#define BIT_MDT_XMIT_CTRL_MDT_CLR_ABORT_WAIT BIT(2)
-#define BIT_MDT_XMIT_CTRL_MDT_XFIFO_CLR_ALL BIT(1)
-#define BIT_MDT_XMIT_CTRL_MDT_XFIFO_CLR_CUR BIT(0)
+#define BIT_MDT_XMIT_CTRL_EN BIT(7)
+#define BIT_MDT_XMIT_CTRL_CMD_MERGE_EN BIT(6)
+#define BIT_MDT_XMIT_CTRL_FIXED_BURST_LEN BIT(5)
+#define BIT_MDT_XMIT_CTRL_FIXED_AID BIT(4)
+#define BIT_MDT_XMIT_CTRL_SINGLE_RUN_EN BIT(3)
+#define BIT_MDT_XMIT_CTRL_CLR_ABORT_WAIT BIT(2)
+#define BIT_MDT_XMIT_CTRL_XFIFO_CLR_ALL BIT(1)
+#define BIT_MDT_XMIT_CTRL_XFIFO_CLR_CUR BIT(0)
/* MDT Receive WRITE Port, default value: 0x00 */
#define REG_MDT_XMIT_WRITE_PORT 0x0589