Cc: Alexander Shiyan <shc_work@xxxxxxx>
Cc: Eric Bénard <eric@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Marek Vasut <marex@xxxxxxx>
Cc: Sascha Hauer <kernel@xxxxxxxxxxxxxx>
Cc: Shawn Guo <shawn.guo@xxxxxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Cc: driverdev-devel@xxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Denis Carikli <denis@xxxxxxxxxx>
---
.../bindings/staging/imx-drm/fsl-imx-drm.txt | 1 +
drivers/staging/imx-drm/parallel-display.c | 13 +++++++++++++
2 files changed, 14 insertions(+)
diff --git a/Documentation/devicetree/bindings/staging/imx-drm/fsl-imx-drm.txt b/Documentation/devicetree/bindings/staging/imx-drm/fsl-imx-drm.txt
index 2d24425..4dd7ce5 100644
--- a/Documentation/devicetree/bindings/staging/imx-drm/fsl-imx-drm.txt
+++ b/Documentation/devicetree/bindings/staging/imx-drm/fsl-imx-drm.txt
@@ -28,6 +28,7 @@ Required properties:
- compatible: Should be "fsl,imx-parallel-display"
- crtc: the crtc this display is connected to, see below
Optional properties:
+- display-supply : phandle to the regulator device tree node if needed.
- interface_pix_fmt: How this display is connected to the
crtc. Currently supported types: "rgb24", "rgb565", "bgr666", "rgb666"
- edid: verbatim EDID data block describing attached display.
diff --git a/drivers/staging/imx-drm/parallel-display.c b/drivers/staging/imx-drm/parallel-display.c
index 02aa4da..2cf112e 100644
--- a/drivers/staging/imx-drm/parallel-display.c
+++ b/drivers/staging/imx-drm/parallel-display.c
@@ -22,6 +22,7 @@
#include <drm/drmP.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_crtc_helper.h>
+#include <linux/regulator/consumer.h>
#include <linux/videodev2.h>
#include "imx-drm.h"
@@ -35,6 +36,7 @@ struct imx_parallel_display {
struct drm_encoder encoder;
struct imx_drm_encoder *imx_drm_encoder;
struct device *dev;
+ struct regulator *disp_reg;
void *edid;
int edid_len;
u32 interface_pix_fmt;
@@ -140,6 +142,9 @@ static void imx_pd_encoder_prepare(struct drm_encoder *encoder)
{
struct imx_parallel_display *imxpd = enc_to_imxpd(encoder);
+ if (regulator_enable(imxpd->disp_reg))
+ dev_err(imxpd->dev, "Failed to enable regulator.\n");
+
imx_drm_crtc_panel_format(encoder->crtc, DRM_MODE_ENCODER_NONE,
imxpd->interface_pix_fmt);
}
@@ -156,6 +161,10 @@ static void imx_pd_encoder_mode_set(struct drm_encoder *encoder,
static void imx_pd_encoder_disable(struct drm_encoder *encoder)
{
+ struct imx_parallel_display *imxpd = enc_to_imxpd(encoder);
+
+ if (regulator_disable(imxpd->disp_reg))
+ dev_err(imxpd->dev, "Failed to disable regulator.\n");
}
static void imx_pd_encoder_destroy(struct drm_encoder *encoder)
@@ -259,6 +268,10 @@ static int imx_pd_probe(struct platform_device *pdev)
if (ret)
return ret;
+ imxpd->disp_reg = devm_regulator_get(&pdev->dev, "display");
+ if (IS_ERR(imxpd->disp_reg))
+ return PTR_ERR(imxpd->disp_reg);
+
ret = imx_drm_encoder_add_possible_crtcs(imxpd->imx_drm_encoder, np);
platform_set_drvdata(pdev, imxpd);
--
1.7.9.5
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