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Sun, 14 Jul 2024 23:33:16 -0700 (PDT) From: Dmitry Baryshkov Date: Mon, 15 Jul 2024 09:33:03 +0300 Subject: [PATCH v4 3/5] drm/connector: automatically set immutable flag for max_bpc property MIME-Version: 1.0 Message-Id: <20240715-drm-bridge-connector-fix-hdmi-reset-v4-3-61e6417cfd99@linaro.org> References: <20240715-drm-bridge-connector-fix-hdmi-reset-v4-0-61e6417cfd99@linaro.org> In-Reply-To: <20240715-drm-bridge-connector-fix-hdmi-reset-v4-0-61e6417cfd99@linaro.org> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Dave Stevenson , Laurentiu Palcu , Lucas Stach , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Paul Cercueil , Anitha Chrisanthus , Edmund Dea , Chun-Kuang Hu , Philipp Zabel , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Sean Paul , Marijn Suijten , Tomi Valkeinen , Kieran Bingham , Biju Das , Geert Uytterhoeven , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , Thierry Reding , Mikko Perttunen , Jonathan Hunter , Jyri Sarha , Matthias Brugger , AngeloGioacchino Del Regno Cc: Rob Clark , Abhinav Kumar , Dmitry Baryshkov , dri-devel@lists.freedesktop.org, igt-dev@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-tegra@vger.kernel.org X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1164; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=Ogj1qgSBFy5LiaMGrph8HSRVcootU6FeEO747BTFj9E=; b=owGbwMvMwMXYbdNlx6SpcZXxtFoSQ9qUQysu/J/Xl5n/9o/EfmHLmdY1x3fJXa8q/t5631Izp 6VP4f30TkZjFgZGLgZZMUUWn4KWqTGbksM+7JhaDzOIlQlkCgMXpwBMRPg8B8NKPS4j53+nGRhP VBcpNN70edCVY/lnJcPcZSbfTc/NZDjqy6J4IKKOJ5lRyqf+pLljwNWcn8dbq5ta/jC3fL5Surt 8VnHwiZ8ube0uSdOfHZtUofj4yj2FJZ909eR959nxx9g9rdtcmORwy69fzvGuf/mlJ9ITLxRdKU /VyNt9e8HWnyJSNaJvsvvjVOZ/8xJcrea+Le6pdpiL04no7ZG5l+apXb1wf90jpyWPt1z035Z38 UmCspiUQ5HjJzXNXLbKp8oVKQ0yzQwbTWba5eanp9nPFBKUKtof79uV/nmO00QFK+krh9kFBW1Z lM+2PipLcPhrUlgXZKBucDBt5ZLW8y+WpX08IzaNs3cFAA== X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" With the introduction of the HDMI Connector framework the driver might end up creating the max_bpc property with min = max = 8. IGT insists that such properties carry the 'immutable' flag. Automatically set the flag if the driver asks for the max_bpc property with min == max. Fixes: aadb3e16b8f3 ("drm/connector: hdmi: Add output BPC to the connector state") Signed-off-by: Dmitry Baryshkov Acked-by: Maxime Ripard --- drivers/gpu/drm/drm_connector.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index ab6ab7ff7ea8..33847fd63628 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -2610,7 +2610,12 @@ int drm_connector_attach_max_bpc_property(struct drm_connector *connector, prop = connector->max_bpc_property; if (!prop) { - prop = drm_property_create_range(dev, 0, "max bpc", min, max); + u32 flags = 0; + + if (min == max) + flags |= DRM_MODE_PROP_IMMUTABLE; + + prop = drm_property_create_range(dev, flags, "max bpc", min, max); if (!prop) return -ENOMEM;