[PATCH 2/2] drm/i915/dsi: debug log send packet sequence contents

[Jani Nikula <jani.nikula@intel.com>]

This might help debug issues better than just debug logging the function
name.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/display/intel_dsi_vbt.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
index 748e5462bd95..2528c0996c25 100644
--- a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
+++ b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
@@ -107,8 +107,7 @@ static const u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi,
 	u16 len;
 	enum port port;
 	ssize_t ret;
-
-	drm_dbg_kms(display->drm, "\n");
+	bool hs_mode;
 
 	flags = *data++;
 	type = *data++;
@@ -130,13 +129,18 @@ static const u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi,
 		goto out;
 	}
 
-	if ((flags >> MIPI_TRANSFER_MODE_SHIFT) & 1)
+	hs_mode = (flags >> MIPI_TRANSFER_MODE_SHIFT) & 1;
+	if (hs_mode)
 		dsi_device->mode_flags &= ~MIPI_DSI_MODE_LPM;
 	else
 		dsi_device->mode_flags |= MIPI_DSI_MODE_LPM;
 
 	dsi_device->channel = (flags >> MIPI_VIRTUAL_CHANNEL_SHIFT) & 3;
 
+	drm_dbg_kms(display->drm, "DSI packet: Port %c (seq %u), Flags 0x%02x, VC %u, %s, Type %u, Length %u, Data %*ph\n",
+		    port_name(port), seq_port, flags, dsi_device->channel,
+		    hs_mode ? "HS" : "LP", type, len, (int)len, data);
+
 	switch (type) {
 	case MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM:
 		ret = mipi_dsi_generic_write(dsi_device, NULL, 0);
-- 
2.47.3