linux-kernel - [PATCH] drm/amd/display: fix hdmi_encoded_link

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Message-Id: <20230118160722.289840-1-arnd@kernel.org>
Date:   Wed, 18 Jan 2023 17:06:27 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Rodrigo Siqueira <Rodrigo.Siqueira@....com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Wenjing Liu <wenjing.liu@....com>,
        "Shen, George" <George.Shen@....com>,
        Solomon Chiu <solomon.chiu@....com>,
        Ian Chen <ian.chen@....com>, Po Ting Chen <robin.chen@....com>,
        Michael Strauss <michael.strauss@....com>,
        Wesley Chalmers <Wesley.Chalmers@....com>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drm/amd/display: fix hdmi_encoded_link_bw definition

From: Arnd Bergmann <arnd@...db.de>

Some of the data structures are hidden when CONFIG_DRM_AMD_DC_DCN is
disabled, which leads to a link failure:

drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:234:21: error: 'union hdmi_encoded_link_bw' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
  234 |         const union hdmi_encoded_link_bw hdmi_encoded_link_bw)
      |                     ^~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:234:42: error: parameter 2 ('hdmi_encoded_link_bw') has incomplete type
  234 |         const union hdmi_encoded_link_bw hdmi_encoded_link_bw)
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:232:17: error: function declaration isn't a prototype [-Werror=strict-prototypes]
  232 | static uint32_t intersect_frl_link_bw_support(
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c: In function 'get_active_converter_info':
drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:1126:76: error: storage size of 'hdmi_encoded_link_bw' isn't known
 1126 |                                                 union hdmi_encoded_link_bw hdmi_encoded_link_bw;
      |                                                                            ^~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dp_capability.c:1130:101: error: 'struct <anonymous>' has no member named 'MAX_ENCODED_LINK_BW_SUPPORT'
 1130 |                                                                                 hdmi_color_caps.bits.MAX_ENCODED_LINK_BW_SUPPORT);

There is probably no need to hide the data structure, and removing
the #ifdef makes it build cleanly.

Fixes: d5a43956b73b ("drm/amd/display: move dp capability related logic to link_dp_capability")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/gpu/drm/amd/display/dc/dc_dp_types.h | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h
index b7e53b7dc4ed..84da54358922 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h
@@ -361,14 +361,10 @@ enum dpcd_downstream_port_detailed_type {
 union dwnstream_port_caps_byte2 {
 	struct {
 		uint8_t MAX_BITS_PER_COLOR_COMPONENT:2;
-#if defined(CONFIG_DRM_AMD_DC_DCN)
 		uint8_t MAX_ENCODED_LINK_BW_SUPPORT:3;
 		uint8_t SOURCE_CONTROL_MODE_SUPPORT:1;
 		uint8_t CONCURRENT_LINK_BRING_UP_SEQ_SUPPORT:1;
 		uint8_t RESERVED:1;
-#else
-		uint8_t RESERVED:6;
-#endif
 	} bits;
 	uint8_t raw;
 };
@@ -406,7 +402,6 @@ union dwnstream_port_caps_byte3_hdmi {
 	uint8_t raw;
 };
 
-#if defined(CONFIG_DRM_AMD_DC_DCN)
 union hdmi_sink_encoded_link_bw_support {
 	struct {
 		uint8_t HDMI_SINK_ENCODED_LINK_BW_SUPPORT:3;
@@ -428,7 +423,6 @@ union hdmi_encoded_link_bw {
 	} bits;
 	uint8_t raw;
 };
-#endif
 
 /*4-byte structure for detailed capabilities of a down-stream port
 (DP-to-TMDS converter).*/
-- 
2.39.0