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12 | 12 | #include <asm/uaccess.h>
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13 | 13 | #include <linux/string.h>
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14 | 14 | #include <linux/uaccess.h>
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| 15 | +#include <linux/device.h>
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| 16 | +#include <linux/proc_fs.h>
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15 | 17 |
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16 | 18 | #define GPIO_FUNCTION_OUTPUT 0
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17 | 19 | #define GPIO_FUNCTION_INPUT 1
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18 | 20 | #define GPIO_FUNCTION_RESET 3
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19 | | -
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20 | | -static int flash_flag = 0;
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| 21 | +#define HIGH "1"
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| 22 | +#define LOW "0"
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| 23 | +
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| 24 | +//static int flash_flag = 0;
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21 | 25 |
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22 | 26 | struct ndj_gpio {
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23 | | - int gpio_num; //gpui num
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| 27 | + int gpio_num; //gpio num
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24 | 28 | int action; //gpio flag
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25 | 29 | int gpio_event; //input only
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26 | 30 | int send_mode; //input only
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.. | .. |
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31 | 35 |
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32 | 36 | struct ndj_gpio_data {
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33 | 37 | struct ndj_gpio ndj_gpio_num[20];
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34 | | - struct input_dev *input;
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35 | 38 | struct timer_list mytimer;
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36 | 39 | int gpio_dts_num;
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| 40 | + unsigned int gpio_op0;
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| 41 | + unsigned int gpio_op1;
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37 | 42 | };
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38 | | -
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| 43 | +
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39 | 44 | static struct ndj_gpio_data *gpio_data = NULL;
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40 | | -static int event_flag = 0;
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| 45 | +
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| 46 | +/* creat sysfs gpio api node*/
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| 47 | +#if 0
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| 48 | +static ssize_t gpio_op0_show(struct class *class,struct class_attribute *attr, char *buf)
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| 49 | +{
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| 50 | + return sprintf(buf, "%d\n", gpio_get_value(gpio_data->gpio_op0));
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| 51 | +}
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| 52 | +
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| 53 | +static ssize_t gpio_op0_store(struct class *class,struct class_attribute *attr, const char *buf, size_t size)
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| 54 | +{
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| 55 | + if(!strncmp(buf, HIGH, strlen(HIGH))) {
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| 56 | + gpio_set_value(gpio_data->gpio_op0, 1);
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| 57 | +
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| 58 | + } else if(!strncmp(buf, LOW, strlen(LOW))) {
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| 59 | + gpio_set_value(gpio_data->gpio_op0, 0);
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| 60 | + }
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| 61 | + return size;
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| 62 | +}
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| 63 | +
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| 64 | +static ssize_t gpio_op1_show(struct class *class,struct class_attribute *attr, char *buf)
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| 65 | +{
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| 66 | + return sprintf(buf, "%d\n", gpio_get_value(gpio_data->gpio_op1));
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| 67 | +}
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| 68 | +
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| 69 | +static ssize_t gpio_op1_store(struct class *class,struct class_attribute *attr, const char *buf, size_t size)
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| 70 | +{
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| 71 | + if(!strncmp(buf, HIGH, strlen(HIGH))) {
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| 72 | + gpio_set_value(gpio_data->gpio_op1, 1);
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| 73 | +
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| 74 | + } else if(!strncmp(buf, LOW, strlen(LOW))) {
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| 75 | + gpio_set_value(gpio_data->gpio_op1, 0);
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| 76 | + }
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| 77 | + return size;
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| 78 | +}
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| 79 | +
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| 80 | +static CLASS_ATTR_RW(gpio_op0);
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| 81 | +static CLASS_ATTR_RW(gpio_op1);
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| 82 | +
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| 83 | +static struct attribute *ndj_gpio_attrs[] = {
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| 84 | + &class_attr_gpio_op0.attr,
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| 85 | + &class_attr_gpio_op1.attr,
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| 86 | + NULL,
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| 87 | +};
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| 88 | +
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| 89 | +ATTRIBUTE_GROUPS(ndj_gpio);
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| 90 | +
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| 91 | +/** Device model classes */
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| 92 | +struct class ndj_io_class = {
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| 93 | + .name = "io_control", //sysfs directory
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| 94 | + .class_groups = ndj_gpio_groups,
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| 95 | +};
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| 96 | +
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| 97 | +#endif
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| 98 | +//static int event_flag = 0;
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41 | 99 | static int open_now = 0;
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42 | 100 | static char* file_name = NULL;
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43 | 101 |
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.. | .. |
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95 | 153 | }
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96 | 154 |
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97 | 155 |
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98 | | -static const struct file_operations gpio_ops = {
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99 | | - .owner = THIS_MODULE,
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100 | | - .open = gpio_open,
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101 | | - .write = gpio_write,
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102 | | - .read = gpio_read,
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| 156 | +static const struct proc_ops gpio_ops = {
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| 157 | + .proc_open = gpio_open,
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| 158 | + .proc_write = gpio_write,
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| 159 | + .proc_read = gpio_read,
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103 | 160 | };
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104 | 161 |
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105 | 162 | static int ndj_gpio_probe(struct platform_device *pdev) {
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106 | 163 | struct device_node *np = pdev->dev.of_node;
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107 | 164 | struct device_node *child_np;
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108 | | - struct device *dev = &pdev->dev;
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109 | 165 | static struct proc_dir_entry *root_entry_gpio;
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110 | 166 | enum of_gpio_flags gpio_flags;
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111 | 167 | int ret = 0;
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112 | 168 | int gpio_cnt = 0;
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113 | 169 | char gpio_name_num[20];
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114 | 170 | int gpio_in_cnt = 0;
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115 | | - int cnt =0;
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116 | | - int lvds_index = 0;
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117 | | - int gpio0, gpio1, gpio2, gpio3;
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118 | | - int i=0;
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119 | | - enum of_gpio_flags flags;
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120 | 171 |
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121 | 172 | gpio_data = devm_kzalloc(&pdev->dev, sizeof(struct ndj_gpio_data),GFP_KERNEL);
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122 | 173 | if (!gpio_data) {
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.. | .. |
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130 | 181 | if (gpio_data->gpio_dts_num == 0){
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131 | 182 | dev_info(&pdev->dev, "no gpio defined\n");
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132 | 183 | }
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| 184 | +
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| 185 | + #if 0
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| 186 | + /*gpio_op0*/
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| 187 | + ret = of_get_named_gpio_flags(np, "gpio_op0", 0, &gpio_flags);
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| 188 | + if (ret < 0) {
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| 189 | + printk("%s() Can not read property gpio_op0\n", __func__);
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| 190 | + return -ENODEV;
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| 191 | + }
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| 192 | + gpio_data->gpio_op0 = ret;
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| 193 | + ret = gpio_request(gpio_data->gpio_op0, "gpio_op0");
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| 194 | + if(ret < 0){
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| 195 | + printk("%s() gpio_op0 request ERROR\n", __func__);
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| 196 | + return -ENODEV;
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| 197 | + }
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| 198 | +
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| 199 | + gpio_direction_output(gpio_data->gpio_op0,!gpio_flags);
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| 200 | +#endif
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133 | 201 |
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134 | 202 | /* create node */
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135 | 203 | root_entry_gpio = proc_mkdir("ndj_gpio", NULL);
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.. | .. |
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161 | 229 |
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162 | 230 | gpio_direction_input(gpio_data->ndj_gpio_num[gpio_cnt].gpio_num);
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163 | 231 | //gpio_direction_output(gpio_data->ndj_gpio_num[gpio_cnt].gpio_num,!gpio_data->ndj_gpio_num[gpio_cnt].action);
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164 | | - event_flag = gpio_flags;
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165 | | - of_property_read_u32(child_np, "send_mode", &(gpio_data->ndj_gpio_num[gpio_cnt].send_mode));
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166 | | - of_property_read_u32(child_np, "gpio_event", &(gpio_data->ndj_gpio_num[gpio_cnt].gpio_event));
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| 232 | + //event_flag = gpio_flags;
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| 233 | + //of_property_read_u32(child_np, "send_mode", &(gpio_data->ndj_gpio_num[gpio_cnt].send_mode));
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| 234 | + //of_property_read_u32(child_np, "gpio_event", &(gpio_data->ndj_gpio_num[gpio_cnt].gpio_event));
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167 | 235 | gpio_in_cnt++;
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168 | 236 | }
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169 | 237 | break;
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.. | .. |
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200 | 268 | gpio_cnt++;
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201 | 269 | }
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202 | 270 |
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203 | | - platform_set_drvdata(pdev, gpio_data);
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| 271 | + platform_set_drvdata(pdev, gpio_data);
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| 272 | +
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| 273 | +#if 0
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| 274 | + ret= class_register(&ndj_io_class);
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| 275 | + if(ret < 0) {
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| 276 | + return -EINVAL;
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| 277 | + }
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| 278 | +#endif
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204 | 279 | return 0;
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205 | 280 | }
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206 | 281 |
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207 | 282 |
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208 | 283 | static int ndj_gpio_suspend(struct platform_device *pdev, pm_message_t state)
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209 | 284 | {
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210 | | - int ret;
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211 | | - struct nk_io_pdata *pdata;
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| 285 | +// int ret;
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| 286 | +// struct nk_io_pdata *pdata;
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212 | 287 | printk("nk_suspend !!!!\n");
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213 | 288 | return 0;
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214 | 289 | }
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215 | 290 |
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216 | 291 | static int ndj_gpio_resume(struct platform_device *pdev)
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217 | 292 | {
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218 | | - int ret,reset_pin;
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| 293 | +// int ret,reset_pin;
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219 | 294 | printk("nk_io resume !!!!\n");
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220 | 295 | return 0;
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221 | 296 | }
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.. | .. |
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223 | 298 |
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224 | 299 | static int ndj_gpio_remove(struct platform_device *pdev)
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225 | 300 | {
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| 301 | +// class_unregister(&ndj_io_class);
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226 | 302 | return 0;
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227 | 303 | }
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228 | 304 |
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.. | .. |
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245 | 321 |
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246 | 322 | module_platform_driver(ndj_gpio_driver);
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247 | 323 | MODULE_LICENSE("GPL");
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248 | | -MODULE_LICENSE("GPL"); |
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| 324 | +MODULE_LICENSE("GPL");
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