From: Caleb Connolly <caleb@connolly.tech> To: Caleb Connolly <caleb@connolly.tech> Cc: Andy Gross <agross@kernel.org>, Bjorn Andersson <bjorn.andersson@linaro.org>, Rob Herring <robh+dt@kernel.org>, Thierry Reding <thierry.reding@gmail.com>, Sam Ravnborg <sam@ravnborg.org>, David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH 3/5] drm/panel/samsung-sofef00: make gpio optional Date: Tue, 20 Jul 2021 15:33:47 +0000 [thread overview] Message-ID: <20210720153125.43389-4-caleb@connolly.tech> (raw) In-Reply-To: <20210720153125.43389-1-caleb@connolly.tech> The OnePlus 6T panel fails to initialise if it has been reset, workaround this by allowing panels to not specify a reset GPIO. Signed-off-by: Caleb Connolly <caleb@connolly.tech> --- drivers/gpu/drm/panel/panel-samsung-sofef00.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-samsung-sofef00.c b/drivers/gpu/drm/panel/panel-samsung-sofef00.c index 8cb1853574bb..a20a5af14653 100644 --- a/drivers/gpu/drm/panel/panel-samsung-sofef00.c +++ b/drivers/gpu/drm/panel/panel-samsung-sofef00.c @@ -44,6 +44,8 @@ struct sofef00_panel *to_sofef00_panel(struct drm_panel *panel) static void sofef00_panel_reset(struct sofef00_panel *ctx) { + if (!ctx->reset_gpio) + return; gpiod_set_value_cansleep(ctx->reset_gpio, 0); usleep_range(5000, 6000); gpiod_set_value_cansleep(ctx->reset_gpio, 1); @@ -137,7 +139,8 @@ static int sofef00_panel_prepare(struct drm_panel *panel) ret = sofef00_panel_on(ctx); if (ret < 0) { dev_err(dev, "Failed to initialize panel: %d\n", ret); - gpiod_set_value_cansleep(ctx->reset_gpio, 1); + if (ctx->reset_gpio) + gpiod_set_value_cansleep(ctx->reset_gpio, 1); return ret; } @@ -276,7 +279,7 @@ static int sofef00_panel_probe(struct mipi_dsi_device *dsi) return ret; } - ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(ctx->reset_gpio)) { ret = PTR_ERR(ctx->reset_gpio); dev_warn(dev, "Failed to get reset-gpios: %d\n", ret); -- 2.32.0
WARNING: multiple messages have this Message-ID (diff)
From: Caleb Connolly <caleb@connolly.tech> To: Caleb Connolly <caleb@connolly.tech> Cc: devicetree@vger.kernel.org, David Airlie <airlied@linux.ie>, linux-arm-msm@vger.kernel.org, Rob Herring <robh+dt@kernel.org>, Bjorn Andersson <bjorn.andersson@linaro.org>, Andy Gross <agross@kernel.org>, Thierry Reding <thierry.reding@gmail.com>, dri-devel@lists.freedesktop.org, Sam Ravnborg <sam@ravnborg.org> Subject: [PATCH 3/5] drm/panel/samsung-sofef00: make gpio optional Date: Tue, 20 Jul 2021 15:33:47 +0000 [thread overview] Message-ID: <20210720153125.43389-4-caleb@connolly.tech> (raw) In-Reply-To: <20210720153125.43389-1-caleb@connolly.tech> The OnePlus 6T panel fails to initialise if it has been reset, workaround this by allowing panels to not specify a reset GPIO. Signed-off-by: Caleb Connolly <caleb@connolly.tech> --- drivers/gpu/drm/panel/panel-samsung-sofef00.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-samsung-sofef00.c b/drivers/gpu/drm/panel/panel-samsung-sofef00.c index 8cb1853574bb..a20a5af14653 100644 --- a/drivers/gpu/drm/panel/panel-samsung-sofef00.c +++ b/drivers/gpu/drm/panel/panel-samsung-sofef00.c @@ -44,6 +44,8 @@ struct sofef00_panel *to_sofef00_panel(struct drm_panel *panel) static void sofef00_panel_reset(struct sofef00_panel *ctx) { + if (!ctx->reset_gpio) + return; gpiod_set_value_cansleep(ctx->reset_gpio, 0); usleep_range(5000, 6000); gpiod_set_value_cansleep(ctx->reset_gpio, 1); @@ -137,7 +139,8 @@ static int sofef00_panel_prepare(struct drm_panel *panel) ret = sofef00_panel_on(ctx); if (ret < 0) { dev_err(dev, "Failed to initialize panel: %d\n", ret); - gpiod_set_value_cansleep(ctx->reset_gpio, 1); + if (ctx->reset_gpio) + gpiod_set_value_cansleep(ctx->reset_gpio, 1); return ret; } @@ -276,7 +279,7 @@ static int sofef00_panel_probe(struct mipi_dsi_device *dsi) return ret; } - ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(ctx->reset_gpio)) { ret = PTR_ERR(ctx->reset_gpio); dev_warn(dev, "Failed to get reset-gpios: %d\n", ret); -- 2.32.0
next prev parent reply other threads:[~2021-07-20 15:46 UTC|newest] Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-20 15:33 [PATCH 0/5] OnePlus 6 fixes Caleb Connolly 2021-07-20 15:33 ` Caleb Connolly 2021-07-20 15:33 ` [PATCH 1/5] arm64: dts: qcom: sdm845-oneplus: fix reserved-mem Caleb Connolly 2021-07-20 15:33 ` Caleb Connolly 2021-07-20 15:33 ` [PATCH 2/5] dts: arm64: sdm845-oneplus-common: enable debug UART Caleb Connolly 2021-07-20 15:33 ` Caleb Connolly 2021-07-20 15:33 ` Caleb Connolly [this message] 2021-07-20 15:33 ` [PATCH 3/5] drm/panel/samsung-sofef00: make gpio optional Caleb Connolly 2021-07-20 16:03 ` Bjorn Andersson 2021-07-20 16:03 ` Bjorn Andersson 2021-07-20 16:24 ` Caleb Connolly 2021-07-20 16:24 ` Caleb Connolly 2021-07-20 15:33 ` [PATCH 4/5] arm64: dts: qcom: sdm845-oneplus-fajita: remove panel reset gpio Caleb Connolly 2021-07-20 15:33 ` Caleb Connolly 2021-07-20 15:33 ` [PATCH 5/5] arm64: dts: qcom: sdm845-oneplus: add ipa firmware names Caleb Connolly 2021-07-20 15:33 ` Caleb Connolly
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