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[4/4] drm/i915/dsi: Add some debug logging to mipi_exec_i2c (v2)

Message ID 20230916125455.237325-5-hdegoede@redhat.com (mailing list archive)
State New, archived
Headers show
Series drm/i915/vlv_dsi: Add quirks for x86 android tablets (v2) | expand

Commit Message

Hans de Goede Sept. 16, 2023, 12:54 p.m. UTC 
Add some debug logging to mipi_exec_i2c, to make debugging various
issues seen with it easier.

Changes in v2:
- Drop unnecessary __func__ drm_dbg_kms() argument

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/gpu/drm/i915/display/intel_dsi_vbt.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
index e56ec3f2d84a..24b2cbcfc1ef 100644
--- a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
+++ b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
@@ -565,6 +565,9 @@  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, "bus %d client-addr 0x%02x reg 0x%02x data %*ph\n",
+		    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);