On Thu, Jan 18, 2018 at 05:04:59PM +0200, Jani Nikula wrote:
> Update VBT defs to reflect revision 216. While at it, default the
> expected child device struct size to sizeof the size rather than a
> hardcoded value.
>
> Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
> Signed-off-by: Jani Nikula <jani.nik...@intel.com>
> ---
> drivers/gpu/drm/i915/intel_bios.c | 8 +++++---
> drivers/gpu/drm/i915/intel_vbt_defs.h | 2 ++
> 2 files changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_bios.c
> b/drivers/gpu/drm/i915/intel_bios.c
> index 51108ffc28d1..b820d595ebc8 100644
> --- a/drivers/gpu/drm/i915/intel_bios.c
> +++ b/drivers/gpu/drm/i915/intel_bios.c
> @@ -1323,11 +1323,13 @@ parse_general_definitions(struct drm_i915_private
> *dev_priv,
> expected_size = LEGACY_CHILD_DEVICE_CONFIG_SIZE;
> } else if (bdb->version == 195) {
> expected_size = 37;
> - } else if (bdb->version <= 197) {
> + } else if (bdb->version <= 215) {
> expected_size = 38;
> + } else if (bdb->version <= 216) {
> + expected_size = 39;
> } else {
> - expected_size = 38;
> - BUILD_BUG_ON(sizeof(*child) < 38);
> + expected_size = sizeof(*child);
> + BUILD_BUG_ON(sizeof(*child) < 39);
> DRM_DEBUG_DRIVER("Expected child device config size for VBT
> version %u not known; assuming %u\n",
> bdb->version, expected_size);
> }
> diff --git a/drivers/gpu/drm/i915/intel_vbt_defs.h
> b/drivers/gpu/drm/i915/intel_vbt_defs.h
> index e3d7745a9151..bbb173e116b3 100644
> --- a/drivers/gpu/drm/i915/intel_vbt_defs.h
> +++ b/drivers/gpu/drm/i915/intel_vbt_defs.h
> @@ -412,6 +412,8 @@ struct child_device_config {
> u16 dp_gpio_pin_num; /* 195 */
> u8 dp_iboost_level:4; /* 196 */
> u8 hdmi_iboost_level:4; /* 196 */
> + u8 dp_max_link_rate_reserved:6; /* 216 */
> + u8 dp_max_link_rate:2; /* 216 CNL+ */
Isn't the bitorder wrong here?
> } __packed;
>
> struct bdb_general_definitions {
> --
> 2.11.0
>
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