[Intel-gfx] [PATCH 3/5] drm/i915/dsi: Add some debug logging to mipi_exec_i2c

[Hans de Goede]

Add some debug logging to mipi_exec_i2c, to make debugging various
issues seen with it easier.

Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
 drivers/gpu/drm/i915/display/intel_dsi_vbt.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
index 0da91849efde..215dbfc0af0f 100644
--- a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
+++ b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
@@ -464,6 +464,10 @@ static const u8 *mipi_exec_i2c(struct intel_dsi *intel_dsi, const u8 *data)
 	u8 payload_size = *(data + 6);
 	u8 *payload_data;
 
+	drm_dbg_kms(&i915->drm, "%s bus %d client-addr 0x%02x reg 0x%02x data %*ph\n",
+		    __func__, vbt_i2c_bus_num, slave_addr, reg_offset,
+		    payload_size, data + 7);
+
 	if (intel_dsi->i2c_bus_num < 0) {
 		intel_dsi->i2c_bus_num = vbt_i2c_bus_num;
 		i2c_acpi_find_adapter(intel_dsi, slave_addr);
-- 
2.35.1