diff options
Diffstat (limited to 'samsung/exynos_drm_dp.c')
| -rw-r--r-- | samsung/exynos_drm_dp.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/samsung/exynos_drm_dp.c b/samsung/exynos_drm_dp.c index 97786f2..0f1a526 100644 --- a/samsung/exynos_drm_dp.c +++ b/samsung/exynos_drm_dp.c @@ -190,6 +190,10 @@ static unsigned long dp_bist_mode = DP_BIST_OFF; module_param(dp_bist_mode, ulong, 0664); MODULE_PARM_DESC(dp_bist_mode, "use BIST mode by setting dp_bist_mode=x"); +static bool dp_edid_hexdump = false; +module_param(dp_edid_hexdump, bool, 0664); +MODULE_PARM_DESC(dp_edid_hexdump, "Enable/disable DP EDID hexdump"); + static int dp_emulation_mode; static void dp_fill_host_caps(struct dp_device *dp) @@ -360,6 +364,8 @@ static ssize_t dp_aux_transfer(struct drm_dp_aux *dp_aux, static int dp_get_edid_block(void *data, u8 *edid, unsigned int block, size_t length) { + struct dp_device *dp = data; + // Hard-coded EDID for DP emulation mode static const unsigned char emul_edid_block0[] = { 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x1e, 0x6d, 0x01, 0x00, 0x01, @@ -388,6 +394,11 @@ static int dp_get_edid_block(void *data, u8 *edid, unsigned int block, if (!dp_emulation_mode) { dp_hw_read_edid(block, length, edid); + if (dp_edid_hexdump) { + dp_info(dp, "EDID: block %u length %zu\n", block, length); + print_hex_dump(KERN_INFO, "exynos-drmdp: ", DUMP_PREFIX_NONE, + 16, 1, edid, length, true); + } return 0; } @@ -399,7 +410,7 @@ static int dp_get_edid_block(void *data, u8 *edid, unsigned int block, return 0; } - dp_warn(dp_drvdata, "%s: unknown edid block %d requested\n", __func__, block); + dp_warn(dp, "%s: unknown EDID block %d requested\n", __func__, block); return -1; } |