On 06/12/17 10:43, Meghana Madhyastha wrote:
On Tue, Oct 24, 2017 at 06:45:34PM +0200, Noralf Trønnes wrote:
Den 24.10.2017 17.42, skrev Sean Paul:
On Sat, Oct 21, 2017 at 05:27:33PM +0530, Meghana Madhyastha wrote:
Rename tinydrm_of_find_backlight to of_find_backlight and move
it to linux/backlight.c so that it can be used by other drivers.
Signed-off-by: Meghana Madhyastha <meghana.madhyastha@xxxxxxxxx>
---
Changes in v14:
-s/backlight_get/of_find_backlight/
drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c | 40 --------------------------
drivers/gpu/drm/tinydrm/mi0283qt.c | 3 +-
drivers/video/backlight/backlight.c | 37 ++++++++++++++++++++++++
include/drm/tinydrm/tinydrm-helpers.h | 2 --
include/linux/backlight.h | 19 ++++++++++++
5 files changed, 58 insertions(+), 43 deletions(-)
diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
index a42dee6..cb1a01a 100644
--- a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
+++ b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
@@ -236,46 +236,6 @@ void tinydrm_xrgb8888_to_gray8(u8 *dst, void *vaddr, struct drm_framebuffer *fb,
}
EXPORT_SYMBOL(tinydrm_xrgb8888_to_gray8);
-/**
- * tinydrm_of_find_backlight - Find backlight device in device-tree
- * @dev: Device
- *
- * This function looks for a DT node pointed to by a property named 'backlight'
- * and uses of_find_backlight_by_node() to get the backlight device.
- * Additionally if the brightness property is zero, it is set to
- * max_brightness.
- *
- * Returns:
- * NULL if there's no backlight property.
- * Error pointer -EPROBE_DEFER if the DT node is found, but no backlight device
- * is found.
- * If the backlight device is found, a pointer to the structure is returned.
- */
-struct backlight_device *tinydrm_of_find_backlight(struct device *dev)
-{
- struct backlight_device *backlight;
- struct device_node *np;
-
- np = of_parse_phandle(dev->of_node, "backlight", 0);
- if (!np)
- return NULL;
-
- backlight = of_find_backlight_by_node(np);
- of_node_put(np);
-
- if (!backlight)
- return ERR_PTR(-EPROBE_DEFER);
-
- if (!backlight->props.brightness) {
- backlight->props.brightness = backlight->props.max_brightness;
- DRM_DEBUG_KMS("Backlight brightness set to %d\n",
- backlight->props.brightness);
- }
-
- return backlight;
-}
-EXPORT_SYMBOL(tinydrm_of_find_backlight);
-
#if IS_ENABLED(CONFIG_SPI)
/**
diff --git a/drivers/gpu/drm/tinydrm/mi0283qt.c b/drivers/gpu/drm/tinydrm/mi0283qt.c
index 7fd2691..53ab5a0 100644
--- a/drivers/gpu/drm/tinydrm/mi0283qt.c
+++ b/drivers/gpu/drm/tinydrm/mi0283qt.c
@@ -12,6 +12,7 @@
#include <drm/tinydrm/ili9341.h>
#include <drm/tinydrm/mipi-dbi.h>
#include <drm/tinydrm/tinydrm-helpers.h>
+#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
@@ -188,7 +189,7 @@ static int mi0283qt_probe(struct spi_device *spi)
if (IS_ERR(mipi->regulator))
return PTR_ERR(mipi->regulator);
- mipi->backlight = tinydrm_of_find_backlight(dev);
+ mipi->backlight = of_find_backlight(dev);
Sorry for the follow-up spam, but are you missing the put_device somewhere? The
next patch uses devm_of_find_backlight. So AFAICT you're either leaking a reference
here, or you're closing an additional reference in the next patch.
This is my fault, put_device() has been missing all along, so Meghana is
plugging that hole,
in the next patch :-)
Noralf.
Is there anything else that needs to be done for this patch ? If not,
and it is ready, can this be acked ? It seems to have been stuck for
some time now and I will definitely fix anything that needs to be fixed
in this patch ASAP.
I've lost track a little but have two questions:
1. Is there any pending feedback? If not a resend might be sensible.
2. Which maintainers are you expecting to pick up the patch? It looks to
me like lots of people are be missing from the To: fields (compared
to what I think get_maintainer.pl would give you) meaning the patches
won't get picked up.
Daniel.
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