1 #include <linux/kernel.h> 2 #include <linux/stat.h> 3 #include <asm/macio.h> 4 5 6 #define macio_config_of_attr(field, format_string) \ 7 static ssize_t \ 8 field##_show (struct device *dev, struct device_attribute *attr, \ 9 char *buf) \ 10 { \ 11 struct macio_dev *mdev = to_macio_device (dev); \ 12 return sprintf (buf, format_string, mdev->ofdev.dev.of_node->field); \ 13 } 14 15 static ssize_t 16 compatible_show (struct device *dev, struct device_attribute *attr, char *buf) 17 { 18 struct platform_device *of; 19 const char *compat; 20 int cplen; 21 int length = 0; 22 23 of = &to_macio_device (dev)->ofdev; 24 compat = of_get_property(of->dev.of_node, "compatible", &cplen); 25 if (!compat) { 26 *buf = '\0'; 27 return 0; 28 } 29 while (cplen > 0) { 30 int l; 31 length += sprintf (buf, "%s\n", compat); 32 buf += length; 33 l = strlen (compat) + 1; 34 compat += l; 35 cplen -= l; 36 } 37 38 return length; 39 } 40 41 static ssize_t modalias_show (struct device *dev, struct device_attribute *attr, 42 char *buf) 43 { 44 int len = of_device_get_modalias(dev, buf, PAGE_SIZE - 2); 45 46 buf[len] = '\n'; 47 buf[len+1] = 0; 48 49 return len+1; 50 } 51 52 static ssize_t devspec_show(struct device *dev, 53 struct device_attribute *attr, char *buf) 54 { 55 struct platform_device *ofdev; 56 57 ofdev = to_platform_device(dev); 58 return sprintf(buf, "%s\n", ofdev->dev.of_node->full_name); 59 } 60 61 macio_config_of_attr (name, "%s\n"); 62 macio_config_of_attr (type, "%s\n"); 63 64 struct device_attribute macio_dev_attrs[] = { 65 __ATTR_RO(name), 66 __ATTR_RO(type), 67 __ATTR_RO(compatible), 68 __ATTR_RO(modalias), 69 __ATTR_RO(devspec), 70 __ATTR_NULL 71 }; 72