+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2016 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/gpio.h>
#include <power/regulator.h>
-DECLARE_GLOBAL_DATA_PTR;
-
struct pwm_backlight_priv {
struct udevice *reg;
struct gpio_desc enable;
static int pwm_backlight_enable(struct udevice *dev)
{
struct pwm_backlight_priv *priv = dev_get_priv(dev);
+ struct dm_regulator_uclass_platdata *plat;
uint duty_cycle;
int ret;
- debug("%s: Enable '%s', regulator '%s'\n", __func__, dev->name,
- priv->reg->name);
- ret = regulator_set_enable(priv->reg, true);
- if (ret) {
- debug("%s: Cannot enable regulator for PWM '%s'\n", __func__,
- dev->name);
- return ret;
+ if (priv->reg) {
+ plat = dev_get_uclass_platdata(priv->reg);
+ debug("%s: Enable '%s', regulator '%s'/'%s'\n", __func__,
+ dev->name, priv->reg->name, plat->name);
+ ret = regulator_set_enable(priv->reg, true);
+ if (ret) {
+ debug("%s: Cannot enable regulator for PWM '%s'\n",
+ __func__, dev->name);
+ return ret;
+ }
+ mdelay(120);
}
- mdelay(120);
duty_cycle = priv->period_ns * (priv->default_level - priv->min_level) /
(priv->max_level - priv->min_level + 1);
static int pwm_backlight_ofdata_to_platdata(struct udevice *dev)
{
struct pwm_backlight_priv *priv = dev_get_priv(dev);
- struct fdtdec_phandle_args args;
- const void *blob = gd->fdt_blob;
- int node = dev_of_offset(dev);
+ struct ofnode_phandle_args args;
int index, ret, count, len;
const u32 *cell;
+ debug("%s: start\n", __func__);
ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
"power-supply", &priv->reg);
- if (ret) {
+ if (ret)
debug("%s: Cannot get power supply: ret=%d\n", __func__, ret);
- return ret;
- }
ret = gpio_request_by_name(dev, "enable-gpios", 0, &priv->enable,
GPIOD_IS_OUT);
if (ret) {
if (ret != -ENOENT)
return ret;
}
- ret = fdtdec_parse_phandle_with_args(blob, node, "pwms", "#pwm-cells",
- 0, 0, &args);
+ ret = dev_read_phandle_with_args(dev, "pwms", "#pwm-cells", 0, 0,
+ &args);
if (ret) {
debug("%s: Cannot get PWM phandle: ret=%d\n", __func__, ret);
return ret;
}
- ret = uclass_get_device_by_of_offset(UCLASS_PWM, args.node, &priv->pwm);
+ ret = uclass_get_device_by_ofnode(UCLASS_PWM, args.node, &priv->pwm);
if (ret) {
debug("%s: Cannot get PWM: ret=%d\n", __func__, ret);
return ret;
priv->channel = args.args[0];
priv->period_ns = args.args[1];
- index = fdtdec_get_int(blob, node, "default-brightness-level", 255);
- cell = fdt_getprop(blob, node, "brightness-levels", &len);
+ index = dev_read_u32_default(dev, "default-brightness-level", 255);
+ cell = dev_read_prop(dev, "brightness-levels", &len);
count = len / sizeof(u32);
if (cell && count > index) {
priv->default_level = fdt32_to_cpu(cell[index]);
priv->default_level = index;
priv->max_level = 255;
}
+ debug("%s: done\n", __func__);
return 0;