diff options
Diffstat (limited to 'drivers/gpu/drm/panel/panel-orisetech-otm8009a.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-orisetech-otm8009a.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c index c189cd6329c8..90f1ae4af93c 100644 --- a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c +++ b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c @@ -1,16 +1,17 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) STMicroelectronics SA 2017 * * Authors: Philippe Cornu <philippe.cornu@st.com> * Yannick Fertre <yannick.fertre@st.com> - * - * License terms: GNU General Public License (GPL), version 2 */ + #include <drm/drmP.h> #include <drm/drm_mipi_dsi.h> #include <drm/drm_panel.h> #include <linux/backlight.h> #include <linux/gpio/consumer.h> +#include <linux/regulator/consumer.h> #include <video/mipi_display.h> #define DRV_NAME "orisetech_otm8009a" @@ -62,6 +63,7 @@ struct otm8009a { struct drm_panel panel; struct backlight_device *bl_dev; struct gpio_desc *reset_gpio; + struct regulator *supply; bool prepared; bool enabled; }; @@ -279,6 +281,8 @@ static int otm8009a_unprepare(struct drm_panel *panel) msleep(20); } + regulator_disable(ctx->supply); + ctx->prepared = false; return 0; @@ -292,6 +296,12 @@ static int otm8009a_prepare(struct drm_panel *panel) if (ctx->prepared) return 0; + ret = regulator_enable(ctx->supply); + if (ret < 0) { + DRM_ERROR("failed to enable supply: %d\n", ret); + return ret; + } + if (ctx->reset_gpio) { gpiod_set_value_cansleep(ctx->reset_gpio, 0); gpiod_set_value_cansleep(ctx->reset_gpio, 1); @@ -414,6 +424,13 @@ static int otm8009a_probe(struct mipi_dsi_device *dsi) return PTR_ERR(ctx->reset_gpio); } + ctx->supply = devm_regulator_get(dev, "power"); + if (IS_ERR(ctx->supply)) { + ret = PTR_ERR(ctx->supply); + dev_err(dev, "failed to request regulator: %d\n", ret); + return ret; + } + mipi_dsi_set_drvdata(dsi, ctx); ctx->dev = dev; |