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Holtmann</a><ul><li><a href="/lkml/2005/9/15/201">Dmitry Torokhov</a></li></ul></li><li><a href="/lkml/2005/9/15/106">Dmitry Torokhov</a></li><li><a href="/lkml/2005/9/15/107">Dmitry Torokhov</a></li><li><a href="/lkml/2005/9/15/388">Andrew Morton</a><ul><li><a href="/lkml/2005/9/15/389">Dmitry Torokhov</a><ul><li><a href="/lkml/2005/9/16/2">Andrew Morton</a><ul><li><a href="/lkml/2005/9/16/3">Dmitry Torokhov</a></li></ul></li></ul></li></ul></li></ul></li></ul><div class="threadlist">Patch in this message</div><ul class="threadlist"><li><a href="/lkml/diff/2005/9/15/71/1">Get diff 1</a></li></ul></td><td width="32" rowspan="2" class="c" valign="top"><img src="/images/icornerl.gif" width="32" height="32" alt="/" /></td><td class="c" rowspan="2" valign="top" style="padding-top: 1em"><table><tr><td><table><tr><td class="lp">Date</td><td class="rp" itemprop="datePublished">Thu, 15 Sep 2005 02:01:55 -0500</td></tr><tr><td class="lp">From</td><td class="rp" itemprop="author">Dmitry Torokhov <></td></tr><tr><td class="lp">Subject</td><td class="rp" itemprop="name">[patch 24/28] Input: export input_dev data via sysfs attributes</td></tr></table></td><td></td></tr></table><pre itemprop="articleBody">Input: export various input device attributes via sysfs The following structure is exported: input0/ |-- name |-- phys |-- uniq |-- id/{bustype|vendor|product|version} `-- capabilities/{ev|abs|rel|key|led|msc|ff|sw} Signed-off-by: Dmitry Torokhov <dtor@mail.ru> --- drivers/input/input.c | 157 ++++++++++++++++++++++++++++++++++++++++++-------- 1 files changed, 134 insertions(+), 23 deletions(-) Index: work/drivers/input/input.c =================================================================== --- work.orig/drivers/input/input.c +++ work/drivers/input/input.c @@ -308,6 +308,7 @@ static struct input_device_id *input_mat MATCH_BIT(ledbit, LED_MAX); MATCH_BIT(sndbit, SND_MAX); MATCH_BIT(ffbit, FF_MAX); + MATCH_BIT(swbit, SW_MAX); return id; } @@ -433,6 +434,23 @@ static void input_call_hotplug(char *ver #endif +static int input_print_bitmap(char *buf, unsigned long *bitmap, int max) +{ + int i; + int len = 0; + + for (i = NBITS(max) - 1; i > 0; i--) + if (bitmap[i]) + break; + + for (; i >= 0; i--) + len += sprintf(buf + len, "%lx%s", bitmap[i], i > 0 ? " " : ""); + + len += sprintf(buf + len, "\n"); + + return len; +} + #ifdef CONFIG_PROC_FS static struct proc_dir_entry *proc_bus_input_dir; @@ -454,20 +472,17 @@ static unsigned int input_devices_poll(s return 0; } -#define SPRINTF_BIT_B(bit, name, max) \ - do { \ - len += sprintf(buf + len, "B: %s", name); \ - for (i = NBITS(max) - 1; i >= 0; i--) \ - if (dev->bit[i]) break; \ - for (; i >= 0; i--) \ - len += sprintf(buf + len, "%lx ", dev->bit[i]); \ - len += sprintf(buf + len, "\n"); \ +#define SPRINTF_BIT_B(ev, bm) \ + do { \ + len += sprintf(buf + len, "B: %s=", #ev); \ + len += input_print_bitmap(buf + len, \ + dev->bm##bit, ev##_MAX); \ } while (0) -#define SPRINTF_BIT_B2(bit, name, max, ev) \ - do { \ - if (test_bit(ev, dev->evbit)) \ - SPRINTF_BIT_B(bit, name, max); \ +#define SPRINTF_BIT_B2(ev, bm) \ + do { \ + if (test_bit(EV_##ev, dev->evbit)) \ + SPRINTF_BIT_B(ev, bm); \ } while (0) static int input_devices_read(char *buf, char **start, off_t pos, int count, int *eof, void *data) @@ -477,7 +492,7 @@ static int input_devices_read(char *buf, const char *path; off_t at = 0; - int i, len, cnt = 0; + int len, cnt = 0; list_for_each_entry(dev, &input_dev_list, node) { @@ -496,15 +511,15 @@ static int input_devices_read(char *buf, len += sprintf(buf + len, "\n"); - SPRINTF_BIT_B(evbit, "EV=", EV_MAX); - SPRINTF_BIT_B2(keybit, "KEY=", KEY_MAX, EV_KEY); - SPRINTF_BIT_B2(relbit, "REL=", REL_MAX, EV_REL); - SPRINTF_BIT_B2(absbit, "ABS=", ABS_MAX, EV_ABS); - SPRINTF_BIT_B2(mscbit, "MSC=", MSC_MAX, EV_MSC); - SPRINTF_BIT_B2(ledbit, "LED=", LED_MAX, EV_LED); - SPRINTF_BIT_B2(sndbit, "SND=", SND_MAX, EV_SND); - SPRINTF_BIT_B2(ffbit, "FF=", FF_MAX, EV_FF); - SPRINTF_BIT_B2(swbit, "SW=", SW_MAX, EV_SW); + SPRINTF_BIT_B(EV, ev); + SPRINTF_BIT_B2(KEY, key); + SPRINTF_BIT_B2(REL, rel); + SPRINTF_BIT_B2(ABS, abs); + SPRINTF_BIT_B2(MSC, msc); + SPRINTF_BIT_B2(LED, led); + SPRINTF_BIT_B2(SND, snd); + SPRINTF_BIT_B2(FF, ff); + SPRINTF_BIT_B2(SW, sw); len += sprintf(buf + len, "\n"); @@ -611,6 +626,96 @@ static inline int input_proc_init(void) static inline void input_proc_exit(void) { } #endif +#define INPUT_DEV_STRING_ATTR_SHOW(name) \ +static ssize_t input_dev_show_##name(struct class_device *dev, char *buf) \ +{ \ + struct input_dev *input_dev = to_input_dev(dev); \ + int retval; \ + \ + retval = down_interruptible(&input_dev->sem); \ + if (retval) \ + return retval; \ + \ + retval = sprintf(buf, "%s\n", input_dev->name ? input_dev->name : ""); \ + \ + up(&input_dev->sem); \ + \ + return retval; \ +} + +INPUT_DEV_STRING_ATTR_SHOW(name); +INPUT_DEV_STRING_ATTR_SHOW(phys); +INPUT_DEV_STRING_ATTR_SHOW(uniq); + +static struct class_device_attribute input_dev_attrs[] = { + __ATTR(name, S_IRUGO, input_dev_show_name, NULL), + __ATTR(phys, S_IRUGO, input_dev_show_phys, NULL), + __ATTR(uniq, S_IRUGO, input_dev_show_uniq, NULL), + __ATTR_NULL +}; + +#define INPUT_DEV_ID_ATTR(name) \ +static ssize_t input_dev_show_id_##name(struct class_device *dev, char *buf) \ +{ \ + struct input_dev *input_dev = to_input_dev(dev); \ + return sprintf(buf, "%04x\n", input_dev->id.name); \ +} \ +static CLASS_DEVICE_ATTR(name, S_IRUGO, input_dev_show_id_##name, NULL); + +INPUT_DEV_ID_ATTR(bustype); +INPUT_DEV_ID_ATTR(vendor); +INPUT_DEV_ID_ATTR(product); +INPUT_DEV_ID_ATTR(version); + +static struct attribute *input_dev_id_attrs[] = { + &class_device_attr_bustype.attr, + &class_device_attr_vendor.attr, + &class_device_attr_product.attr, + &class_device_attr_version.attr, + NULL +}; + +static struct attribute_group input_dev_id_attr_group = { + .name = "id", + .attrs = input_dev_id_attrs, +}; + +#define INPUT_DEV_CAP_ATTR(ev, bm) \ +static ssize_t input_dev_show_cap_##bm(struct class_device *dev, char *buf) \ +{ \ + struct input_dev *input_dev = to_input_dev(dev); \ + return input_print_bitmap(buf, input_dev->bm##bit, ev##_MAX); \ +} \ +static CLASS_DEVICE_ATTR(bm, S_IRUGO, input_dev_show_cap_##bm, NULL); + +INPUT_DEV_CAP_ATTR(EV, ev); +INPUT_DEV_CAP_ATTR(KEY, key); +INPUT_DEV_CAP_ATTR(REL, rel); +INPUT_DEV_CAP_ATTR(ABS, abs); +INPUT_DEV_CAP_ATTR(MSC, msc); +INPUT_DEV_CAP_ATTR(LED, led); +INPUT_DEV_CAP_ATTR(SND, snd); +INPUT_DEV_CAP_ATTR(FF, ff); +INPUT_DEV_CAP_ATTR(SW, sw); + +static struct attribute *input_dev_caps_attrs[] = { + &class_device_attr_ev.attr, + &class_device_attr_key.attr, + &class_device_attr_rel.attr, + &class_device_attr_abs.attr, + &class_device_attr_msc.attr, + &class_device_attr_led.attr, + &class_device_attr_snd.attr, + &class_device_attr_ff.attr, + &class_device_attr_sw.attr, + NULL +}; + +static struct attribute_group input_dev_caps_attr_group = { + .name = "capabilities", + .attrs = input_dev_caps_attrs, +}; + static void input_dev_release(struct class_device *class_dev) { struct input_dev *dev = to_input_dev(class_dev); @@ -622,6 +727,7 @@ static void input_dev_release(struct cla static struct class input_dev_class = { .name = "input_dev", .release = input_dev_release, + .class_dev_attrs = input_dev_attrs, }; struct input_dev *input_allocate_device(void) @@ -659,6 +765,8 @@ static void input_register_classdevice(s kfree(path); class_device_add(&dev->cdev); + sysfs_create_group(&dev->cdev.kobj, &input_dev_id_attr_group); + sysfs_create_group(&dev->cdev.kobj, &input_dev_caps_attr_group); } void input_register_device(struct input_dev *dev) @@ -725,8 +833,11 @@ void input_unregister_device(struct inpu list_del_init(&dev->node); - if (dev->dynalloc) + if (dev->dynalloc) { + sysfs_remove_group(&dev->cdev.kobj, &input_dev_caps_attr_group); + sysfs_remove_group(&dev->cdev.kobj, &input_dev_id_attr_group); class_device_unregister(&dev->cdev); + } input_wakeup_procfs_readers(); } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at <a href="http://vger.kernel.org/majordomo-info.html">http://vger.kernel.org/majordomo-info.html</a> Please read the FAQ at <a href="http://www.tux.org/lkml/">http://www.tux.org/lkml/</a> </pre></td><td width="32" rowspan="2" class="c" valign="top"><img src="/images/icornerr.gif" width="32" height="32" alt="\" /></td></tr><tr><td align="right" valign="bottom"> 聽 </td></tr><tr><td align="right" valign="bottom">聽</td><td class="c" valign="bottom" style="padding-bottom: 0px"><img src="/images/bcornerl.gif" width="32" height="32" alt="\" /></td><td class="c">聽</td><td class="c" valign="bottom" style="padding-bottom: 0px"><img src="/images/bcornerr.gif" width="32" height="32" alt="/" /></td></tr><tr><td align="right" valign="top" colspan="2"> 聽 </td><td class="lm">Last update: 2005-09-15 09:14 聽聽 [from the cache] 漏2003-2020 <a href="http://blog.jasper.es/">Jasper Spaans</a>|hosted at <a href="https://www.digitalocean.com/?refcode=9a8e99d24cf9">Digital Ocean</a> and my Meterkast|<a href="http://blog.jasper.es/categories.html#lkml-ref">Read the blog</a></td><td>聽</td></tr></table><script language="javascript" src="/js/styleswitcher.js" type="text/javascript"></script></body></html>