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([78.63.144.185]) by smtp.googlemail.com with ESMTPSA id 2adb3069b0e04-539ffff3e5asm678703e87.151.2024.10.17.00.57.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Oct 2024 00:57:37 -0700 (PDT) From: =?utf-8?q?Giedrius_Statkevi=C4=8Dius?= To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin Cc: =?utf-8?q?Giedrius_Statkevi=C4=8Dius?= , Ankit Nautiyal , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Subject: [PATCH v2] drm/i915/lspcon: do not hardcode settle timeout Date: Thu, 17 Oct 2024 10:57:24 +0300 Message-ID: <20241017075725.207384-1-giedriuswork@gmail.com> X-Mailer: git-send-email 2.47.0 MIME-Version: 1.0 X-Mailman-Approved-At: Thu, 17 Oct 2024 13:52:26 +0000 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Avoid hardcoding the LSPCON settle timeout because it takes a longer time on certain chips made by certain vendors. Use the function that already exists to determine the timeout. Reviewed-by: Ankit Nautiyal Signed-off-by: Giedrius Statkevičius --- v2: add documentation about the parameter, apply 80 character line length limit. drivers/gpu/drm/display/drm_dp_dual_mode_helper.c | 4 ++-- drivers/gpu/drm/i915/display/intel_lspcon.c | 3 ++- include/drm/display/drm_dp_dual_mode_helper.h | 2 +- 3 files changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_dual_mode_helper.c b/drivers/gpu/drm/display/drm_dp_dual_mode_helper.c index 14a2a8473682..d14b262b2344 100644 --- a/drivers/gpu/drm/display/drm_dp_dual_mode_helper.c +++ b/drivers/gpu/drm/display/drm_dp_dual_mode_helper.c @@ -486,16 +486,16 @@ EXPORT_SYMBOL(drm_lspcon_get_mode); * @dev: &drm_device to use * @adapter: I2C-over-aux adapter * @mode: required mode of operation + * @time_out: LSPCON mode change settle timeout * * Returns: * 0 on success, -error on failure/timeout */ int drm_lspcon_set_mode(const struct drm_device *dev, struct i2c_adapter *adapter, - enum drm_lspcon_mode mode) + enum drm_lspcon_mode mode, int time_out) { u8 data = 0; int ret; - int time_out = 200; enum drm_lspcon_mode current_mode; if (mode == DRM_LSPCON_MODE_PCON) diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c index f9db867fae89..30c31fddec99 100644 --- a/drivers/gpu/drm/i915/display/intel_lspcon.c +++ b/drivers/gpu/drm/i915/display/intel_lspcon.c @@ -211,7 +211,8 @@ static int lspcon_change_mode(struct intel_lspcon *lspcon, return 0; } - err = drm_lspcon_set_mode(intel_dp->aux.drm_dev, ddc, mode); + err = drm_lspcon_set_mode(intel_dp->aux.drm_dev, ddc, mode, + lspcon_get_mode_settle_timeout(lspcon)); if (err < 0) { drm_err(display->drm, "LSPCON mode change failed\n"); return err; diff --git a/include/drm/display/drm_dp_dual_mode_helper.h b/include/drm/display/drm_dp_dual_mode_helper.h index 7ee482265087..7ac6969db935 100644 --- a/include/drm/display/drm_dp_dual_mode_helper.h +++ b/include/drm/display/drm_dp_dual_mode_helper.h @@ -117,5 +117,5 @@ const char *drm_dp_get_dual_mode_type_name(enum drm_dp_dual_mode_type type); int drm_lspcon_get_mode(const struct drm_device *dev, struct i2c_adapter *adapter, enum drm_lspcon_mode *current_mode); int drm_lspcon_set_mode(const struct drm_device *dev, struct i2c_adapter *adapter, - enum drm_lspcon_mode reqd_mode); + enum drm_lspcon_mode reqd_mode, int time_out); #endif