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Tue, 04 Jun 2024 17:24:12 -0700 (PDT) Received: from dianders.sjc.corp.google.com ([2620:15c:9d:2:3609:ff79:4625:8a71]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f6323dd862sm89032025ad.147.2024.06.04.17.24.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Jun 2024 17:24:11 -0700 (PDT) From: Douglas Anderson To: dri-devel@lists.freedesktop.org, Maxime Ripard Cc: Linus Walleij , Chris Morgan , Neil Armstrong , Yuran Pereira , Douglas Anderson , Jerry Han , Jitao Shi , Rock Wang , AngeloGioacchino Del Regno , Daniel Vetter , David Airlie , Jerry Han , Jessica Zhang , Maarten Lankhorst , Matthias Brugger , Thomas Zimmermann , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org Subject: [PATCH v3 01/24] drm/panel: boe-himax8279d: Stop tracking prepared/enabled Date: Tue, 4 Jun 2024 17:22:47 -0700 Message-ID: <20240604172305.v3.1.Ia3f254ab6e04e4f7afba6c066454498c8fb01324@changeid> X-Mailer: git-send-email 2.45.1.288.g0e0cd299f1-goog In-Reply-To: <20240605002401.2848541-1-dianders@chromium.org> References: <20240605002401.2848541-1-dianders@chromium.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" As talked about in commit d2aacaf07395 ("drm/panel: Check for already prepared/enabled in drm_panel"), we want to remove needless code from panel drivers that was storing and double-checking the prepared/enabled state. Even if someone was relying on the double-check before, that double-check is now in the core and not needed in individual drivers. NOTE: as part of this, transition the panel's direct calls to its disable/unprepare functions in shutdown/remove to call through DRM panel. Cc: Jerry Han Cc: Jitao Shi Cc: Rock Wang Acked-by: Linus Walleij Acked-by: Maxime Ripard Signed-off-by: Douglas Anderson --- (no changes since v2) Changes in v2: - Only handle 1 panel per patch. - Split removal of prepared/enabled from handling of remove/shutdown. drivers/gpu/drm/panel/panel-boe-himax8279d.c | 31 +++----------------- 1 file changed, 4 insertions(+), 27 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-boe-himax8279d.c b/drivers/gpu/drm= /panel/panel-boe-himax8279d.c index e225840b0d67..12e14615298b 100644 --- a/drivers/gpu/drm/panel/panel-boe-himax8279d.c +++ b/drivers/gpu/drm/panel/panel-boe-himax8279d.c @@ -47,9 +47,6 @@ struct panel_info { struct gpio_desc *enable_gpio; struct gpio_desc *pp33_gpio; struct gpio_desc *pp18_gpio; - - bool prepared; - bool enabled; }; =20 static inline struct panel_info *to_panel_info(struct drm_panel *panel) @@ -86,17 +83,12 @@ static int boe_panel_disable(struct drm_panel *panel) struct panel_info *pinfo =3D to_panel_info(panel); int err; =20 - if (!pinfo->enabled) - return 0; - err =3D mipi_dsi_dcs_set_display_off(pinfo->link); if (err < 0) { dev_err(panel->dev, "failed to set display off: %d\n", err); return err; } =20 - pinfo->enabled =3D false; - return 0; } =20 @@ -105,9 +97,6 @@ static int boe_panel_unprepare(struct drm_panel *panel) struct panel_info *pinfo =3D to_panel_info(panel); int err; =20 - if (!pinfo->prepared) - return 0; - err =3D mipi_dsi_dcs_set_display_off(pinfo->link); if (err < 0) dev_err(panel->dev, "failed to set display off: %d\n", err); @@ -121,8 +110,6 @@ static int boe_panel_unprepare(struct drm_panel *panel) =20 disable_gpios(pinfo); =20 - pinfo->prepared =3D false; - return 0; } =20 @@ -131,9 +118,6 @@ static int boe_panel_prepare(struct drm_panel *panel) struct panel_info *pinfo =3D to_panel_info(panel); int err; =20 - if (pinfo->prepared) - return 0; - gpiod_set_value(pinfo->pp18_gpio, 1); /* T1: 5ms - 6ms */ usleep_range(5000, 6000); @@ -180,8 +164,6 @@ static int boe_panel_prepare(struct drm_panel *panel) /* T7: 20ms - 21ms */ usleep_range(20000, 21000); =20 - pinfo->prepared =3D true; - return 0; =20 poweroff: @@ -194,9 +176,6 @@ static int boe_panel_enable(struct drm_panel *panel) struct panel_info *pinfo =3D to_panel_info(panel); int ret; =20 - if (pinfo->enabled) - return 0; - usleep_range(120000, 121000); =20 ret =3D mipi_dsi_dcs_set_display_on(pinfo->link); @@ -205,8 +184,6 @@ static int boe_panel_enable(struct drm_panel *panel) return ret; } =20 - pinfo->enabled =3D true; - return 0; } =20 @@ -917,11 +894,11 @@ static void panel_remove(struct mipi_dsi_device *dsi) struct panel_info *pinfo =3D mipi_dsi_get_drvdata(dsi); int err; =20 - err =3D boe_panel_disable(&pinfo->base); + err =3D drm_panel_disable(&pinfo->base); if (err < 0) dev_err(&dsi->dev, "failed to disable panel: %d\n", err); =20 - err =3D boe_panel_unprepare(&pinfo->base); + err =3D drm_panel_unprepare(&pinfo->base); if (err < 0) dev_err(&dsi->dev, "failed to unprepare panel: %d\n", err); =20 @@ -936,8 +913,8 @@ static void panel_shutdown(struct mipi_dsi_device *dsi) { struct panel_info *pinfo =3D mipi_dsi_get_drvdata(dsi); =20 - boe_panel_disable(&pinfo->base); - boe_panel_unprepare(&pinfo->base); + drm_panel_disable(&pinfo->base); + drm_panel_unprepare(&pinfo->base); } =20 static struct mipi_dsi_driver panel_driver =3D { --=20 2.45.1.288.g0e0cd299f1-goog