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From: Sam Ravnborg <sam@ravnborg.org>
To: dri-devel@lists.freedesktop.org,
	Jingoo Han <jingoohan1@gmail.com>,
	Lee Jones <lee.jones@linaro.org>,
	Daniel Thompson <daniel.thompson@linaro.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, Sam Ravnborg <sam@ravnborg.org>
Subject: [PATCH v1 02/22] backlight: Add DECLARE_* macro for device registration
Date: Sun,  2 Aug 2020 13:06:16 +0200
Message-ID: <20200802110636.1018743-3-sam@ravnborg.org> (raw)
In-Reply-To: <20200802110636.1018743-1-sam@ravnborg.org>

Device registration almost always uses a struct backlight_properties
variable to pass config info. Make it simpler and less error prone
by the introduction of a number of macros.

There is one macro for each type of backlight {firmware, platform, raw}.
All members in struct backlight_properties are initialized.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Jingoo Han <jingoohan1@gmail.com>
---
 include/linux/backlight.h | 45 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index 190963ffb7fc..d683c053ec09 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -272,6 +272,51 @@ struct backlight_properties {
 	enum backlight_scale scale;
 };
 
+#define BACKLIGHT_PROPS(_brightness, _max_brightness, _type)	\
+	.brightness = _brightness,				\
+	.max_brightness = _max_brightness,			\
+	.power = FB_BLANK_POWERDOWN,				\
+	.type = _type,						\
+	.fb_blank = 0,						\
+	.state = 0,						\
+	.scale = BACKLIGHT_SCALE_UNKNOWN,
+
+/**
+ * DECLARE_BACKLIGHT_INIT_RAW - backlight_properties to init a raw
+ *                              backlight device
+ *
+ * This macro is used to initialize backlight_properties that is used when
+ * registering a raw backlight device.
+ */
+#define DECLARE_BACKLIGHT_INIT_RAW(name, _brightness, _max_brightness)		\
+	const struct backlight_properties name = {				\
+		BACKLIGHT_PROPS(_brightness, _max_brightness, BACKLIGHT_RAW)	\
+	}
+
+/**
+ * DECLARE_BACKLIGHT_INIT_PLATFORM - backlight_properties to init a platform
+ *                                   backlight device
+ *
+ * This macro is used to initialize backlight_properties that is used when
+ * registering a platform backlight device.
+ */
+#define DECLARE_BACKLIGHT_INIT_PLATFORM(name, _brightness, _max_brightness)		\
+	const struct backlight_properties name = {					\
+		BACKLIGHT_PROPS(_brightness, _max_brightness, BACKLIGHT_PLATFORM)	\
+	}
+
+/**
+ * DECLARE_BACKLIGHT_INIT_FIRMWARE - backlight_properties to init a firmware
+ *                                   backlight device
+ *
+ * This macro is used to initialize backlight_properties that is used when
+ * registering a firmware backlight device.
+ */
+#define DECLARE_BACKLIGHT_INIT_FIRMWARE(name, _brightness, _max_brightness)		\
+	const struct backlight_properties name = {					\
+		BACKLIGHT_PROPS(_brightness, _max_brightness, BACKLIGHT_FIRMWARE)	\
+	}
+
 /**
  * struct backlight_device - backlight device data
  *
-- 
2.25.1

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  parent reply index

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-02 11:06 [RFC PATCH v1 0/22] backlight: add init macros and accessors Sam Ravnborg
2020-08-02 11:06 ` [PATCH v1 01/22] backlight: Silently fail backlight_update_status() if no device Sam Ravnborg
2020-08-02 11:06 ` Sam Ravnborg [this message]
2020-08-02 11:06 ` [PATCH v1 03/22] backlight: Add get/set operations for brightness/power properties Sam Ravnborg
2020-08-04 16:43   ` daniel
2020-08-04 19:56     ` Sam Ravnborg
2020-08-05  7:16       ` daniel
2020-08-02 11:06 ` [PATCH v1 04/22] backlight: gpio: Use DECLARE_BACKLIGHT_INIT_RAW and get/setters Sam Ravnborg
2020-08-02 11:06 ` [PATCH v1 05/22] drm/gma500: Backlight support Sam Ravnborg
2020-08-02 11:06 ` [PATCH v1 06/22] drm/panel: asus-z00t-tm5p5-n35596: Backlight update Sam Ravnborg
2020-08-04 16:59   ` daniel
2020-08-02 11:06 ` [PATCH v1 07/22] drm/panel: jdi-lt070me05000: " Sam Ravnborg
2020-08-02 11:06 ` [PATCH v1 08/22] drm/panel: novatek-nt35510: " Sam Ravnborg
2020-08-04 21:29   ` Linus Walleij
2020-08-02 11:06 ` [PATCH v1 09/22] drm/panel: orisetech-otm8009a: " Sam Ravnborg
2020-08-02 11:06 ` [PATCH v1 10/22] drm/panel: raydium-rm67191: " Sam Ravnborg
2020-08-04 17:04   ` daniel
2020-08-02 11:06 ` [PATCH v1 11/22] drm/panel: samsung-s6e63m0: " Sam Ravnborg
2020-08-02 11:06 ` [PATCH v1 12/22] drm/panel: samsung-s6e63j0x03: " Sam Ravnborg
2020-08-02 11:06 ` [PATCH v1 13/22] drm/panel: samsung-s6e3ha2: " Sam Ravnborg
2020-08-02 11:06 ` [PATCH v1 14/22] drm/panel: sony-acx424akp: " Sam Ravnborg
2020-08-04 21:31   ` Linus Walleij
2020-08-02 11:06 ` [PATCH v1 15/22] drm/panel: sony-acx565akm: " Sam Ravnborg
2020-08-04 17:09   ` daniel
2020-08-02 11:06 ` [PATCH v1 16/22] drm/bridge: parade-ps8622: " Sam Ravnborg
2020-08-02 14:05   ` kernel test robot
2020-08-02 14:32   ` Sam Ravnborg
2020-08-02 11:06 ` [PATCH v1 17/22] drm/tilcdc: " Sam Ravnborg
2020-08-02 13:21   ` kernel test robot
2020-08-02 11:06 ` [PATCH v1 18/22] drm/radeon: " Sam Ravnborg
2020-08-02 11:06 ` [PATCH v1 19/22] drm/amdgpu/atom: " Sam Ravnborg
2020-08-02 11:06 ` [PATCH v1 20/22] drm/i915: " Sam Ravnborg
2020-08-02 11:06 ` [PATCH v1 21/22] drm/omap: display: " Sam Ravnborg
2020-08-02 14:26   ` Sebastian Reichel
2020-08-02 14:32     ` Sam Ravnborg
2020-08-02 22:48       ` Sebastian Reichel
2020-08-02 11:06 ` [PATCH v1 22/22] drm/shmobile: " Sam Ravnborg
2020-08-04 16:51 ` [RFC PATCH v1 0/22] backlight: add init macros and accessors daniel

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