.. | .. |
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5 | 5 | #include <linux/platform_device.h> |
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6 | 6 | #include <linux/leds.h> |
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7 | 7 | #include <linux/delay.h> |
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8 | | -#include <linux/gpio.h> |
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9 | 8 | #include <linux/gpio/consumer.h> |
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10 | 9 | #include <linux/slab.h> |
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11 | 10 | #include <linux/module.h> |
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12 | 11 | #include <linux/of.h> |
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13 | | -#include <uapi/linux/uleds.h> |
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| 12 | + |
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| 13 | +#define LED_LT3593_NAME "lt3593" |
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14 | 14 | |
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15 | 15 | struct lt3593_led_data { |
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16 | | - char name[LED_MAX_NAME_SIZE]; |
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17 | 16 | struct led_classdev cdev; |
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18 | 17 | struct gpio_desc *gpiod; |
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19 | 18 | }; |
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.. | .. |
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60 | 59 | return 0; |
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61 | 60 | } |
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62 | 61 | |
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63 | | -static struct lt3593_led_data *lt3593_led_probe_pdata(struct device *dev) |
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64 | | -{ |
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65 | | - struct gpio_led_platform_data *pdata = dev_get_platdata(dev); |
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66 | | - const struct gpio_led *template = &pdata->leds[0]; |
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67 | | - struct lt3593_led_data *led_data; |
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68 | | - int ret, state; |
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69 | | - |
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70 | | - if (pdata->num_leds != 1) |
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71 | | - return ERR_PTR(-EINVAL); |
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72 | | - |
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73 | | - led_data = devm_kzalloc(dev, sizeof(*led_data), GFP_KERNEL); |
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74 | | - if (!led_data) |
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75 | | - return ERR_PTR(-ENOMEM); |
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76 | | - |
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77 | | - led_data->cdev.name = template->name; |
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78 | | - led_data->cdev.default_trigger = template->default_trigger; |
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79 | | - led_data->cdev.brightness_set_blocking = lt3593_led_set; |
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80 | | - |
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81 | | - state = (template->default_state == LEDS_GPIO_DEFSTATE_ON); |
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82 | | - led_data->cdev.brightness = state ? LED_FULL : LED_OFF; |
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83 | | - |
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84 | | - if (!template->retain_state_suspended) |
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85 | | - led_data->cdev.flags |= LED_CORE_SUSPENDRESUME; |
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86 | | - |
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87 | | - ret = devm_gpio_request_one(dev, template->gpio, state ? |
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88 | | - GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW, |
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89 | | - template->name); |
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90 | | - if (ret < 0) |
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91 | | - return ERR_PTR(ret); |
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92 | | - |
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93 | | - led_data->gpiod = gpio_to_desc(template->gpio); |
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94 | | - if (!led_data->gpiod) |
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95 | | - return ERR_PTR(-EPROBE_DEFER); |
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96 | | - |
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97 | | - ret = devm_led_classdev_register(dev, &led_data->cdev); |
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98 | | - if (ret < 0) |
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99 | | - return ERR_PTR(ret); |
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100 | | - |
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101 | | - dev_info(dev, "registered LT3593 LED '%s' at GPIO %d\n", |
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102 | | - template->name, template->gpio); |
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103 | | - |
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104 | | - return led_data; |
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105 | | -} |
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106 | | - |
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107 | 62 | static int lt3593_led_probe(struct platform_device *pdev) |
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108 | 63 | { |
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109 | 64 | struct device *dev = &pdev->dev; |
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110 | 65 | struct lt3593_led_data *led_data; |
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111 | 66 | struct fwnode_handle *child; |
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112 | 67 | int ret, state = LEDS_GPIO_DEFSTATE_OFF; |
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113 | | - enum gpiod_flags flags = GPIOD_OUT_LOW; |
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| 68 | + struct led_init_data init_data = {}; |
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114 | 69 | const char *tmp; |
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115 | 70 | |
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116 | | - if (dev_get_platdata(dev)) { |
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117 | | - led_data = lt3593_led_probe_pdata(dev); |
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118 | | - if (IS_ERR(led_data)) |
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119 | | - return PTR_ERR(led_data); |
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120 | | - |
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121 | | - goto out; |
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122 | | - } |
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123 | | - |
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124 | | - if (!dev->of_node) |
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| 71 | + if (!dev_of_node(dev)) |
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125 | 72 | return -ENODEV; |
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126 | 73 | |
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127 | 74 | led_data = devm_kzalloc(dev, sizeof(*led_data), GFP_KERNEL); |
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.. | .. |
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139 | 86 | |
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140 | 87 | child = device_get_next_child_node(dev, NULL); |
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141 | 88 | |
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142 | | - ret = fwnode_property_read_string(child, "label", &tmp); |
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143 | | - if (ret < 0) |
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144 | | - snprintf(led_data->name, sizeof(led_data->name), |
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145 | | - "lt3593::"); |
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146 | | - else |
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147 | | - snprintf(led_data->name, sizeof(led_data->name), |
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148 | | - "lt3593:%s", tmp); |
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149 | | - |
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150 | | - fwnode_property_read_string(child, "linux,default-trigger", |
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151 | | - &led_data->cdev.default_trigger); |
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152 | | - |
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153 | 89 | if (!fwnode_property_read_string(child, "default-state", &tmp)) { |
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154 | | - if (!strcmp(tmp, "keep")) { |
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155 | | - state = LEDS_GPIO_DEFSTATE_KEEP; |
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156 | | - flags = GPIOD_ASIS; |
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157 | | - } else if (!strcmp(tmp, "on")) { |
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| 90 | + if (!strcmp(tmp, "on")) |
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158 | 91 | state = LEDS_GPIO_DEFSTATE_ON; |
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159 | | - flags = GPIOD_OUT_HIGH; |
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160 | | - } |
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161 | 92 | } |
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162 | 93 | |
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163 | | - led_data->cdev.name = led_data->name; |
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164 | 94 | led_data->cdev.brightness_set_blocking = lt3593_led_set; |
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165 | 95 | led_data->cdev.brightness = state ? LED_FULL : LED_OFF; |
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166 | 96 | |
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167 | | - ret = devm_led_classdev_register(dev, &led_data->cdev); |
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168 | | - if (ret < 0) { |
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169 | | - fwnode_handle_put(child); |
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| 97 | + init_data.fwnode = child; |
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| 98 | + init_data.devicename = LED_LT3593_NAME; |
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| 99 | + init_data.default_label = ":"; |
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| 100 | + |
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| 101 | + ret = devm_led_classdev_register_ext(dev, &led_data->cdev, &init_data); |
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| 102 | + fwnode_handle_put(child); |
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| 103 | + if (ret < 0) |
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170 | 104 | return ret; |
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171 | | - } |
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172 | 105 | |
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173 | | - led_data->cdev.dev->of_node = dev->of_node; |
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174 | | - |
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175 | | -out: |
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176 | 106 | platform_set_drvdata(pdev, led_data); |
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177 | 107 | |
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178 | 108 | return 0; |
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179 | 109 | } |
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180 | 110 | |
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181 | | -#ifdef CONFIG_OF |
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182 | 111 | static const struct of_device_id of_lt3593_leds_match[] = { |
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183 | 112 | { .compatible = "lltc,lt3593", }, |
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184 | 113 | {}, |
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185 | 114 | }; |
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186 | 115 | MODULE_DEVICE_TABLE(of, of_lt3593_leds_match); |
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187 | | -#endif |
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188 | 116 | |
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189 | 117 | static struct platform_driver lt3593_led_driver = { |
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190 | 118 | .probe = lt3593_led_probe, |
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