projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| cd9c2070 SG |
1 | /* |
| 2 | * Copyright (c) 2016 Google, Inc | |
| 3 | * Written by Simon Glass <sjg@chromium.org> | |
| 4 | * | |
| 5 | * SPDX-License-Identifier: GPL-2.0+ | |
| 6 | */ | |
| 7 | ||
| 8 | #include <common.h> | |
| 9 | #include <backlight.h> | |
| 10 | #include <dm.h> | |
| 11 | #include <panel.h> | |
| 12 | #include <asm/gpio.h> | |
| 13 | #include <power/regulator.h> | |
| 14 | ||
| 15 | DECLARE_GLOBAL_DATA_PTR; | |
| 16 | ||
| 17 | struct simple_panel_priv { | |
| 18 | struct udevice *reg; | |
| 19 | struct udevice *backlight; | |
| 20 | struct gpio_desc enable; | |
| 21 | }; | |
| 22 | ||
| 23 | static int simple_panel_enable_backlight(struct udevice *dev) | |
| 24 | { | |
| 25 | struct simple_panel_priv *priv = dev_get_priv(dev); | |
| 26 | int ret; | |
| 27 | ||
| 1a9f3da9 | 28 | debug("%s: start, backlight = '%s'\n", __func__, priv->backlight->name); |
| cd9c2070 SG |
29 | dm_gpio_set_value(&priv->enable, 1); |
| 30 | ret = backlight_enable(priv->backlight); | |
| 1a9f3da9 | 31 | debug("%s: done, ret = %d\n", __func__, ret); |
| cd9c2070 SG |
32 | if (ret) |
| 33 | return ret; | |
| 34 | ||
| 35 | return 0; | |
| 36 | } | |
| 37 | ||
| 38 | static int simple_panel_ofdata_to_platdata(struct udevice *dev) | |
| 39 | { | |
| 40 | struct simple_panel_priv *priv = dev_get_priv(dev); | |
| 41 | int ret; | |
| 42 | ||
| e23c6c28 SG |
43 | if (IS_ENABLED(CONFIG_DM_REGULATOR)) { |
| 44 | ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev, | |
| 45 | "power-supply", &priv->reg); | |
| 46 | if (ret) { | |
| 28c694c8 | 47 | debug("%s: Warning: cannot get power supply: ret=%d\n", |
| e23c6c28 SG |
48 | __func__, ret); |
| 49 | if (ret != -ENOENT) | |
| 50 | return ret; | |
| 51 | } | |
| cd9c2070 SG |
52 | } |
| 53 | ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev, | |
| 54 | "backlight", &priv->backlight); | |
| 55 | if (ret) { | |
| 56 | debug("%s: Cannot get backlight: ret=%d\n", __func__, ret); | |
| 57 | return ret; | |
| 58 | } | |
| 59 | ret = gpio_request_by_name(dev, "enable-gpios", 0, &priv->enable, | |
| 60 | GPIOD_IS_OUT); | |
| 61 | if (ret) { | |
| 62 | debug("%s: Warning: cannot get enable GPIO: ret=%d\n", | |
| 63 | __func__, ret); | |
| 64 | if (ret != -ENOENT) | |
| 65 | return ret; | |
| 66 | } | |
| 67 | ||
| 68 | return 0; | |
| 69 | } | |
| 70 | ||
| 71 | static int simple_panel_probe(struct udevice *dev) | |
| 72 | { | |
| 73 | struct simple_panel_priv *priv = dev_get_priv(dev); | |
| 74 | int ret; | |
| 75 | ||
| e23c6c28 | 76 | if (IS_ENABLED(CONFIG_DM_REGULATOR) && priv->reg) { |
| cd9c2070 SG |
77 | debug("%s: Enable regulator '%s'\n", __func__, priv->reg->name); |
| 78 | ret = regulator_set_enable(priv->reg, true); | |
| 79 | if (ret) | |
| 80 | return ret; | |
| 81 | } | |
| 82 | ||
| 83 | return 0; | |
| 84 | } | |
| 85 | ||
| 86 | static const struct panel_ops simple_panel_ops = { | |
| 87 | .enable_backlight = simple_panel_enable_backlight, | |
| 88 | }; | |
| 89 | ||
| 90 | static const struct udevice_id simple_panel_ids[] = { | |
| 91 | { .compatible = "simple-panel" }, | |
| d7659212 | 92 | { .compatible = "auo,b133xtn01" }, |
| bb5930d5 SG |
93 | { .compatible = "auo,b116xw03" }, |
| 94 | { .compatible = "auo,b133htn01" }, | |
| cd9c2070 SG |
95 | { } |
| 96 | }; | |
| 97 | ||
| 98 | U_BOOT_DRIVER(simple_panel) = { | |
| 99 | .name = "simple_panel", | |
| 100 | .id = UCLASS_PANEL, | |
| 101 | .of_match = simple_panel_ids, | |
| 102 | .ops = &simple_panel_ops, | |
| 103 | .ofdata_to_platdata = simple_panel_ofdata_to_platdata, | |
| 104 | .probe = simple_panel_probe, | |
| 105 | .priv_auto_alloc_size = sizeof(struct simple_panel_priv), | |
| 106 | }; |