diff options
Diffstat (limited to 'recipes/linux/linux-omap-2.6.29/dss2/0016-DSS2-DSI-improve-packet-len-calculation.patch')
| -rw-r--r-- | recipes/linux/linux-omap-2.6.29/dss2/0016-DSS2-DSI-improve-packet-len-calculation.patch | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/recipes/linux/linux-omap-2.6.29/dss2/0016-DSS2-DSI-improve-packet-len-calculation.patch b/recipes/linux/linux-omap-2.6.29/dss2/0016-DSS2-DSI-improve-packet-len-calculation.patch new file mode 100644 index 0000000000..bca449f169 --- /dev/null +++ b/recipes/linux/linux-omap-2.6.29/dss2/0016-DSS2-DSI-improve-packet-len-calculation.patch @@ -0,0 +1,58 @@ +From 6b2c9d84c7accdfe1067fcdc8a00e50674aab4bb Mon Sep 17 00:00:00 2001 +From: Tomi Valkeinen <tomi.valkeinen@nokia.com> +Date: Thu, 2 Apr 2009 17:42:26 +0300 +Subject: [PATCH] DSS2: DSI: improve packet len calculation + +--- + drivers/video/omap2/dss/dsi.c | 21 ++++++++++++++++----- + 1 files changed, 16 insertions(+), 5 deletions(-) + +diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c +index aecb89d..66ac6ea 100644 +--- a/drivers/video/omap2/dss/dsi.c ++++ b/drivers/video/omap2/dss/dsi.c +@@ -2624,17 +2624,28 @@ static void dsi_update_screen_dispc(struct omap_display *display, + u16 x, u16 y, u16 w, u16 h) + { + int bytespp = 3; ++ int len; + int total_len; +- int line_packet_len; ++ int packet_payload; ++ int packet_len; + u32 l; + + if (dsi.update_mode == OMAP_DSS_UPDATE_MANUAL) + DSSDBG("dsi_update_screen_dispc(%d,%d %dx%d)\n", + x, y, w, h); + +- /* TODO: one packet could be longer, I think? Max is the line buffer */ +- line_packet_len = w * bytespp + 1; /* 1 byte for DCS cmd */ +- total_len = line_packet_len * h; ++ len = w * h * bytespp; ++ ++ /* XXX: one packet could be longer, I think? Line buffer is ++ * 1024 x 24bits, but we have to put DCS cmd there also. ++ * 1023 * 3 should work, but causes strange color effects. */ ++ packet_payload = min(w, (u16)1020) * bytespp; ++ ++ packet_len = packet_payload + 1; /* 1 byte for DCS cmd */ ++ total_len = (len / packet_payload) * packet_len; ++ ++ if (len % packet_payload) ++ total_len += (len % packet_payload) + 1; + + display->ctrl->setup_update(display, x, y, w, h); + +@@ -2646,7 +2657,7 @@ static void dsi_update_screen_dispc(struct omap_display *display, + l = FLD_VAL(total_len, 23, 0); /* TE_SIZE */ + dsi_write_reg(DSI_VC_TE(1), l); + +- dsi_vc_write_long_header(1, DSI_DT_DCS_LONG_WRITE, line_packet_len, 0); ++ dsi_vc_write_long_header(1, DSI_DT_DCS_LONG_WRITE, packet_len, 0); + + if (dsi.use_te) + l = FLD_MOD(l, 1, 30, 30); /* TE_EN */ +-- +1.5.6.5 + |