rk3288: send correct EDID buffer size
decode_edid() parses the whole EDID buffer, regardless of whether there is an extension buffer, so we pass the size of the EDID actually read to prevent EDID parser getting the wrong data. BUG=chrome-os-partner:35053 TEST=Boot from jerry BRANCH=veyron Change-Id: I5951b670f129cf4765a5199cb58ac6abff5478a6 Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Original-Commit-Id: 4d508647efc0a9d48b2a4b23c12a54b63af2813e Original-Change-Id: I8cd8e09025520322461fe940b01e4af3995b5ecd Original-Signed-off-by: huang lin <hl@rock-chips.com> Original-Reviewed-on: https://chromium-review.googlesource.com/240643 Original-Reviewed-by: Daniel Kurtz <djkurtz@chromium.org> Reviewed-on: http://review.coreboot.org/9645 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com>
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@ -765,6 +765,7 @@ static int rk_edp_read_bytes_from_i2c(struct rk_edp *edp,
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static int rk_edp_read_edid(struct rk_edp *edp, struct edid *edid)
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{
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u8 buf[EDID_LENGTH * 2];
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u32 edid_size = EDID_LENGTH;
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int retval;
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/* Read EDID data */
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@ -778,6 +779,7 @@ static int rk_edp_read_edid(struct rk_edp *edp, struct edid *edid)
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/* check if edid have extension flag, and read additional EDID data */
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if (buf[EDID_EXTENSION_FLAG]) {
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edid_size += EDID_LENGTH;
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retval = rk_edp_read_bytes_from_i2c(edp, EDID_ADDR,
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EDID_LENGTH, EDID_LENGTH,
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&buf[EDID_LENGTH]);
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@ -787,7 +789,7 @@ static int rk_edp_read_edid(struct rk_edp *edp, struct edid *edid)
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}
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}
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if (decode_edid(buf, sizeof(buf), edid)) {
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if (decode_edid(buf, edid_size, edid)) {
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printk(BIOS_ERR, "%s: Failed to decode EDID.\n",
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__func__);
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return -1;
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