diff options
Diffstat (limited to 'drivers/media/rc/rc-main.c')
| -rw-r--r-- | drivers/media/rc/rc-main.c | 240 |
1 files changed, 161 insertions, 79 deletions
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c index 66a174979b3c..b9bf5cdcde4a 100644 --- a/drivers/media/rc/rc-main.c +++ b/drivers/media/rc/rc-main.c @@ -70,6 +70,13 @@ static const struct { [RC_PROTO_CEC] = { .name = "cec", .repeat_period = 0 }, [RC_PROTO_IMON] = { .name = "imon", .scancode_bits = 0x7fffffff, .repeat_period = 114 }, + [RC_PROTO_RCMM12] = { .name = "rc-mm-12", + .scancode_bits = 0x00000fff, .repeat_period = 114 }, + [RC_PROTO_RCMM24] = { .name = "rc-mm-24", + .scancode_bits = 0x00ffffff, .repeat_period = 114 }, + [RC_PROTO_RCMM32] = { .name = "rc-mm-32", + .scancode_bits = 0xffffffff, .repeat_period = 114 }, + [RC_PROTO_XBOX_DVD] = { .name = "xbox-dvd", .repeat_period = 64 }, }; /* Used to keep track of known keymaps */ @@ -157,6 +164,41 @@ static struct rc_map_list empty_map = { }; /** + * scancode_to_u64() - converts scancode in &struct input_keymap_entry + * @ke: keymap entry containing scancode to be converted. + * @scancode: pointer to the location where converted scancode should + * be stored. + * + * This function is a version of input_scancode_to_scalar specialized for + * rc-core. + */ +static int scancode_to_u64(const struct input_keymap_entry *ke, u64 *scancode) +{ + switch (ke->len) { + case 1: + *scancode = *((u8 *)ke->scancode); + break; + + case 2: + *scancode = *((u16 *)ke->scancode); + break; + + case 4: + *scancode = *((u32 *)ke->scancode); + break; + + case 8: + *scancode = *((u64 *)ke->scancode); + break; + + default: + return -EINVAL; + } + + return 0; +} + +/** * ir_create_table() - initializes a scancode table * @dev: the rc_dev device * @rc_map: the rc_map to initialize @@ -274,23 +316,35 @@ static unsigned int ir_update_mapping(struct rc_dev *dev, unsigned int new_keycode) { int old_keycode = rc_map->scan[index].keycode; + int i; /* Did the user wish to remove the mapping? */ if (new_keycode == KEY_RESERVED || new_keycode == KEY_UNKNOWN) { - dev_dbg(&dev->dev, "#%d: Deleting scan 0x%04x\n", + dev_dbg(&dev->dev, "#%d: Deleting scan 0x%04llx\n", index, rc_map->scan[index].scancode); rc_map->len--; memmove(&rc_map->scan[index], &rc_map->scan[index+ 1], (rc_map->len - index) * sizeof(struct rc_map_table)); } else { - dev_dbg(&dev->dev, "#%d: %s scan 0x%04x with key 0x%04x\n", + dev_dbg(&dev->dev, "#%d: %s scan 0x%04llx with key 0x%04x\n", index, old_keycode == KEY_RESERVED ? "New" : "Replacing", rc_map->scan[index].scancode, new_keycode); rc_map->scan[index].keycode = new_keycode; + __set_bit(new_keycode, dev->input_dev->keybit); } if (old_keycode != KEY_RESERVED) { + /* A previous mapping was updated... */ + __clear_bit(old_keycode, dev->input_dev->keybit); + /* ... but another scancode might use the same keycode */ + for (i = 0; i < rc_map->len; i++) { + if (rc_map->scan[i].keycode == old_keycode) { + __set_bit(old_keycode, dev->input_dev->keybit); + break; + } + } + /* Possibly shrink the keytable, failure is not a problem */ ir_resize_table(dev, rc_map, GFP_ATOMIC); } @@ -315,8 +369,7 @@ static unsigned int ir_update_mapping(struct rc_dev *dev, */ static unsigned int ir_establish_scancode(struct rc_dev *dev, struct rc_map *rc_map, - unsigned int scancode, - bool resize) + u64 scancode, bool resize) { unsigned int i; @@ -375,7 +428,7 @@ static int ir_setkeycode(struct input_dev *idev, struct rc_dev *rdev = input_get_drvdata(idev); struct rc_map *rc_map = &rdev->rc_map; unsigned int index; - unsigned int scancode; + u64 scancode; int retval = 0; unsigned long flags; @@ -388,7 +441,7 @@ static int ir_setkeycode(struct input_dev *idev, goto out; } } else { - retval = input_scancode_to_scalar(ke, &scancode); + retval = scancode_to_u64(ke, &scancode); if (retval) goto out; @@ -415,8 +468,7 @@ out: * * return: -ENOMEM if all keycodes could not be inserted, otherwise zero. */ -static int ir_setkeytable(struct rc_dev *dev, - const struct rc_map *from) +static int ir_setkeytable(struct rc_dev *dev, const struct rc_map *from) { struct rc_map *rc_map = &dev->rc_map; unsigned int i, index; @@ -447,7 +499,7 @@ static int ir_setkeytable(struct rc_dev *dev, static int rc_map_cmp(const void *key, const void *elt) { - const unsigned int *scancode = key; + const u64 *scancode = key; const struct rc_map_table *e = elt; if (*scancode < e->scancode) @@ -468,7 +520,7 @@ static int rc_map_cmp(const void *key, const void *elt) * return: index in the table, -1U if not found */ static unsigned int ir_lookup_by_scancode(const struct rc_map *rc_map, - unsigned int scancode) + u64 scancode) { struct rc_map_table *res; @@ -497,7 +549,7 @@ static int ir_getkeycode(struct input_dev *idev, struct rc_map_table *entry; unsigned long flags; unsigned int index; - unsigned int scancode; + u64 scancode; int retval; spin_lock_irqsave(&rc_map->lock, flags); @@ -505,7 +557,7 @@ static int ir_getkeycode(struct input_dev *idev, if (ke->flags & INPUT_KEYMAP_BY_INDEX) { index = ke->index; } else { - retval = input_scancode_to_scalar(ke, &scancode); + retval = scancode_to_u64(ke, &scancode); if (retval) goto out; @@ -519,7 +571,6 @@ static int ir_getkeycode(struct input_dev *idev, ke->keycode = entry->keycode; ke->len = sizeof(entry->scancode); memcpy(ke->scancode, &entry->scancode, sizeof(entry->scancode)); - } else if (!(ke->flags & INPUT_KEYMAP_BY_INDEX)) { /* * We do not really know the valid range of scancodes @@ -551,7 +602,7 @@ out: * * return: the corresponding keycode, or KEY_RESERVED */ -u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode) +u32 rc_g_keycode_from_table(struct rc_dev *dev, u64 scancode) { struct rc_map *rc_map = &dev->rc_map; unsigned int keycode; @@ -567,7 +618,7 @@ u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode) spin_unlock_irqrestore(&rc_map->lock, flags); if (keycode != KEY_RESERVED) - dev_dbg(&dev->dev, "%s: scancode 0x%04x keycode 0x%02x\n", + dev_dbg(&dev->dev, "%s: scancode 0x%04llx keycode 0x%02x\n", dev->device_name, scancode, keycode); return keycode; @@ -588,7 +639,7 @@ static void ir_do_keyup(struct rc_dev *dev, bool sync) return; dev_dbg(&dev->dev, "keyup key 0x%04x\n", dev->last_keycode); - del_timer(&dev->timer_repeat); + timer_delete(&dev->timer_repeat); input_report_key(dev->input_dev, dev->last_keycode, 0); led_trigger_event(led_feedback, LED_OFF); if (sync) @@ -623,7 +674,7 @@ EXPORT_SYMBOL_GPL(rc_keyup); */ static void ir_timer_keyup(struct timer_list *t) { - struct rc_dev *dev = from_timer(dev, t, timer_keyup); + struct rc_dev *dev = timer_container_of(dev, t, timer_keyup); unsigned long flags; /* @@ -652,7 +703,7 @@ static void ir_timer_keyup(struct timer_list *t) */ static void ir_timer_repeat(struct timer_list *t) { - struct rc_dev *dev = from_timer(dev, t, timer_repeat); + struct rc_dev *dev = timer_container_of(dev, t, timer_repeat); struct input_dev *input = dev->input_dev; unsigned long flags; @@ -686,7 +737,7 @@ static unsigned int repeat_period(int protocol) void rc_repeat(struct rc_dev *dev) { unsigned long flags; - unsigned int timeout = nsecs_to_jiffies(dev->timeout) + + unsigned int timeout = usecs_to_jiffies(dev->timeout) + msecs_to_jiffies(repeat_period(dev->last_protocol)); struct lirc_scancode sc = { .scancode = dev->last_scancode, .rc_proto = dev->last_protocol, @@ -696,12 +747,15 @@ void rc_repeat(struct rc_dev *dev) }; if (dev->allowed_protocols != RC_PROTO_BIT_CEC) - ir_lirc_scancode_event(dev, &sc); + lirc_scancode_event(dev, &sc); spin_lock_irqsave(&dev->keylock, flags); - input_event(dev->input_dev, EV_MSC, MSC_SCAN, dev->last_scancode); - input_sync(dev->input_dev); + if (dev->last_scancode <= U32_MAX) { + input_event(dev->input_dev, EV_MSC, MSC_SCAN, + dev->last_scancode); + input_sync(dev->input_dev); + } if (dev->keypressed) { dev->keyup_jiffies = jiffies + timeout; @@ -724,7 +778,7 @@ EXPORT_SYMBOL_GPL(rc_repeat); * called with keylock held. */ static void ir_do_keydown(struct rc_dev *dev, enum rc_proto protocol, - u32 scancode, u32 keycode, u8 toggle) + u64 scancode, u32 keycode, u8 toggle) { bool new_event = (!dev->keypressed || dev->last_protocol != protocol || @@ -732,17 +786,19 @@ static void ir_do_keydown(struct rc_dev *dev, enum rc_proto protocol, dev->last_toggle != toggle); struct lirc_scancode sc = { .scancode = scancode, .rc_proto = protocol, - .flags = toggle ? LIRC_SCANCODE_FLAG_TOGGLE : 0, + .flags = (toggle ? LIRC_SCANCODE_FLAG_TOGGLE : 0) | + (!new_event ? LIRC_SCANCODE_FLAG_REPEAT : 0), .keycode = keycode }; if (dev->allowed_protocols != RC_PROTO_BIT_CEC) - ir_lirc_scancode_event(dev, &sc); + lirc_scancode_event(dev, &sc); if (new_event && dev->keypressed) ir_do_keyup(dev, false); - input_event(dev->input_dev, EV_MSC, MSC_SCAN, scancode); + if (scancode <= U32_MAX) + input_event(dev->input_dev, EV_MSC, MSC_SCAN, scancode); dev->last_protocol = protocol; dev->last_scancode = scancode; @@ -753,7 +809,7 @@ static void ir_do_keydown(struct rc_dev *dev, enum rc_proto protocol, /* Register a keypress */ dev->keypressed = true; - dev_dbg(&dev->dev, "%s: key down event, key 0x%04x, protocol 0x%04x, scancode 0x%08x\n", + dev_dbg(&dev->dev, "%s: key down event, key 0x%04x, protocol 0x%04x, scancode 0x%08llx\n", dev->device_name, keycode, protocol, scancode); input_report_key(dev->input_dev, keycode, 1); @@ -790,7 +846,7 @@ static void ir_do_keydown(struct rc_dev *dev, enum rc_proto protocol, * This routine is used to signal that a key has been pressed on the * remote control. */ -void rc_keydown(struct rc_dev *dev, enum rc_proto protocol, u32 scancode, +void rc_keydown(struct rc_dev *dev, enum rc_proto protocol, u64 scancode, u8 toggle) { unsigned long flags; @@ -800,7 +856,7 @@ void rc_keydown(struct rc_dev *dev, enum rc_proto protocol, u32 scancode, ir_do_keydown(dev, protocol, scancode, keycode, toggle); if (dev->keypressed) { - dev->keyup_jiffies = jiffies + nsecs_to_jiffies(dev->timeout) + + dev->keyup_jiffies = jiffies + usecs_to_jiffies(dev->timeout) + msecs_to_jiffies(repeat_period(protocol)); mod_timer(&dev->timer_keyup, dev->keyup_jiffies); } @@ -821,7 +877,7 @@ EXPORT_SYMBOL_GPL(rc_keydown); * remote control. The driver must manually call rc_keyup() at a later stage. */ void rc_keydown_notimeout(struct rc_dev *dev, enum rc_proto protocol, - u32 scancode, u8 toggle) + u64 scancode, u8 toggle) { unsigned long flags; u32 keycode = rc_g_keycode_from_table(dev, scancode); @@ -961,7 +1017,7 @@ static void ir_close(struct input_dev *idev) } /* class for /sys/class/rc */ -static char *rc_devnode(struct device *dev, umode_t *mode) +static char *rc_devnode(const struct device *dev, umode_t *mode) { return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev)); } @@ -1006,6 +1062,10 @@ static const struct { { RC_PROTO_BIT_XMP, "xmp", "ir-xmp-decoder" }, { RC_PROTO_BIT_CEC, "cec", NULL }, { RC_PROTO_BIT_IMON, "imon", "ir-imon-decoder" }, + { RC_PROTO_BIT_RCMM12 | + RC_PROTO_BIT_RCMM24 | + RC_PROTO_BIT_RCMM32, "rc-mm", "ir-rcmm-decoder" }, + { RC_PROTO_BIT_XBOX_DVD, "xbox-dvd", NULL }, }; /** @@ -1035,7 +1095,7 @@ struct rc_filter_attribute { * @buf: a pointer to the output buffer * * This routine is a callback routine for input read the IR protocol type(s). - * it is trigged by reading /sys/class/rc/rc?/protocols. + * it is triggered by reading /sys/class/rc/rc?/protocols. * It returns the protocol names of supported protocols. * Enabled protocols are printed in brackets. * @@ -1206,7 +1266,7 @@ void ir_raw_load_modules(u64 *protocols) * @len: length of the input buffer * * This routine is for changing the IR protocol type. - * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]protocols. + * It is triggered by writing to /sys/class/rc/rc?/[wakeup_]protocols. * See parse_protocol_change() for the valid commands. * Returns @len on success or a negative error code. * @@ -1233,6 +1293,10 @@ static ssize_t store_protocols(struct device *device, } mutex_lock(&dev->lock); + if (!dev->registered) { + mutex_unlock(&dev->lock); + return -ENODEV; + } old_protocols = *current_protocols; new_protocols = old_protocols; @@ -1290,7 +1354,7 @@ out: * @buf: a pointer to the output buffer * * This routine is a callback routine to read a scancode filter value or mask. - * It is trigged by reading /sys/class/rc/rc?/[wakeup_]filter[_mask]. + * It is triggered by reading /sys/class/rc/rc?/[wakeup_]filter[_mask]. * It prints the current scancode filter value or mask of the appropriate filter * type in hexadecimal into @buf and returns the size of the buffer. * @@ -1333,7 +1397,7 @@ static ssize_t show_filter(struct device *device, * @len: length of the input buffer * * This routine is for changing a scancode filter value or mask. - * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]filter[_mask]. + * It is triggered by writing to /sys/class/rc/rc?/[wakeup_]filter[_mask]. * Returns -EINVAL if an invalid filter value for the current protocol was * specified or if scancode filtering is not supported by the driver, otherwise * returns @len. @@ -1371,6 +1435,10 @@ static ssize_t store_filter(struct device *device, return -EINVAL; mutex_lock(&dev->lock); + if (!dev->registered) { + mutex_unlock(&dev->lock); + return -ENODEV; + } new_filter = *filter; if (fattr->mask) @@ -1417,7 +1485,7 @@ unlock: * @buf: a pointer to the output buffer * * This routine is a callback routine for input read the IR protocol type(s). - * it is trigged by reading /sys/class/rc/rc?/wakeup_protocols. + * it is triggered by reading /sys/class/rc/rc?/wakeup_protocols. * It returns the protocol names of supported protocols. * The enabled protocols are printed in brackets. * @@ -1468,7 +1536,7 @@ static ssize_t show_wakeup_protocols(struct device *device, * @len: length of the input buffer * * This routine is for changing the IR protocol type. - * It is trigged by writing to /sys/class/rc/rc?/wakeup_protocols. + * It is triggered by writing to /sys/class/rc/rc?/wakeup_protocols. * Returns @len on success or a negative error code. * * dev->lock is taken to guard against races between @@ -1479,18 +1547,20 @@ static ssize_t store_wakeup_protocols(struct device *device, const char *buf, size_t len) { struct rc_dev *dev = to_rc_dev(device); - enum rc_proto protocol; + enum rc_proto protocol = RC_PROTO_UNKNOWN; ssize_t rc; u64 allowed; int i; mutex_lock(&dev->lock); + if (!dev->registered) { + mutex_unlock(&dev->lock); + return -ENODEV; + } allowed = dev->allowed_wakeup_protocols; - if (sysfs_streq(buf, "none")) { - protocol = RC_PROTO_UNKNOWN; - } else { + if (!sysfs_streq(buf, "none")) { for (i = 0; i < ARRAY_SIZE(protocols); i++) { if ((allowed & (1ULL << i)) && sysfs_streq(buf, protocols[i].name)) { @@ -1544,25 +1614,25 @@ static void rc_dev_release(struct device *device) kfree(dev); } -#define ADD_HOTPLUG_VAR(fmt, val...) \ - do { \ - int err = add_uevent_var(env, fmt, val); \ - if (err) \ - return err; \ - } while (0) - -static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env) +static int rc_dev_uevent(const struct device *device, struct kobj_uevent_env *env) { struct rc_dev *dev = to_rc_dev(device); + int ret = 0; - if (dev->rc_map.name) - ADD_HOTPLUG_VAR("NAME=%s", dev->rc_map.name); - if (dev->driver_name) - ADD_HOTPLUG_VAR("DRV_NAME=%s", dev->driver_name); - if (dev->device_name) - ADD_HOTPLUG_VAR("DEV_NAME=%s", dev->device_name); + mutex_lock(&dev->lock); - return 0; + if (!dev->registered) + ret = -ENODEV; + if (ret == 0 && dev->rc_map.name) + ret = add_uevent_var(env, "NAME=%s", dev->rc_map.name); + if (ret == 0 && dev->driver_name) + ret = add_uevent_var(env, "DRV_NAME=%s", dev->driver_name); + if (ret == 0 && dev->device_name) + ret = add_uevent_var(env, "DEV_NAME=%s", dev->device_name); + + mutex_unlock(&dev->lock); + + return ret; } /* @@ -1750,9 +1820,9 @@ static int rc_prepare_rx_device(struct rc_dev *dev) set_bit(EV_REP, dev->input_dev->evbit); set_bit(EV_MSC, dev->input_dev->evbit); set_bit(MSC_SCAN, dev->input_dev->mscbit); - bitmap_fill(dev->input_dev->keybit, KEY_CNT); /* Pointer/mouse events */ + set_bit(INPUT_PROP_POINTING_STICK, dev->input_dev->propbit); set_bit(EV_REL, dev->input_dev->evbit); set_bit(REL_X, dev->input_dev->relbit); set_bit(REL_Y, dev->input_dev->relbit); @@ -1828,7 +1898,7 @@ int rc_register_device(struct rc_dev *dev) if (!dev) return -EINVAL; - minor = ida_simple_get(&rc_ida, 0, RC_DEV_MAX, GFP_KERNEL); + minor = ida_alloc_max(&rc_ida, RC_DEV_MAX - 1, GFP_KERNEL); if (minor < 0) return minor; @@ -1859,6 +1929,8 @@ int rc_register_device(struct rc_dev *dev) goto out_raw; } + dev->registered = true; + rc = device_add(&dev->dev); if (rc) goto out_rx_free; @@ -1868,25 +1940,28 @@ int rc_register_device(struct rc_dev *dev) dev->device_name ?: "Unspecified device", path ?: "N/A"); kfree(path); - dev->registered = true; + /* + * once the input device is registered in rc_setup_rx_device, + * userspace can open the input device and rc_open() will be called + * as a result. This results in driver code being allowed to submit + * keycodes with rc_keydown, so lirc must be registered first. + */ + if (dev->allowed_protocols != RC_PROTO_BIT_CEC) { + rc = lirc_register(dev); + if (rc < 0) + goto out_dev; + } if (dev->driver_type != RC_DRIVER_IR_RAW_TX) { rc = rc_setup_rx_device(dev); if (rc) - goto out_dev; - } - - /* Ensure that the lirc kfifo is setup before we start the thread */ - if (dev->allowed_protocols != RC_PROTO_BIT_CEC) { - rc = ir_lirc_register(dev); - if (rc < 0) - goto out_rx; + goto out_lirc; } if (dev->driver_type == RC_DRIVER_IR_RAW) { rc = ir_raw_event_register(dev); if (rc < 0) - goto out_lirc; + goto out_rx; } dev_dbg(&dev->dev, "Registered rc%u (driver: %s)\n", dev->minor, @@ -1894,11 +1969,11 @@ int rc_register_device(struct rc_dev *dev) return 0; -out_lirc: - if (dev->allowed_protocols != RC_PROTO_BIT_CEC) - ir_lirc_unregister(dev); out_rx: rc_free_rx_device(dev); +out_lirc: + if (dev->allowed_protocols != RC_PROTO_BIT_CEC) + lirc_unregister(dev); out_dev: device_del(&dev->dev); out_rx_free: @@ -1906,7 +1981,7 @@ out_rx_free: out_raw: ir_raw_event_free(dev); out_minor: - ida_simple_remove(&rc_ida, minor); + ida_free(&rc_ida, minor); return rc; } EXPORT_SYMBOL_GPL(rc_register_device); @@ -1946,10 +2021,8 @@ void rc_unregister_device(struct rc_dev *dev) if (dev->driver_type == RC_DRIVER_IR_RAW) ir_raw_event_unregister(dev); - del_timer_sync(&dev->timer_keyup); - del_timer_sync(&dev->timer_repeat); - - rc_free_rx_device(dev); + timer_delete_sync(&dev->timer_keyup); + timer_delete_sync(&dev->timer_repeat); mutex_lock(&dev->lock); if (dev->users && dev->close) @@ -1957,16 +2030,18 @@ void rc_unregister_device(struct rc_dev *dev) dev->registered = false; mutex_unlock(&dev->lock); + rc_free_rx_device(dev); + /* * lirc device should be freed with dev->registered = false, so * that userspace polling will get notified. */ if (dev->allowed_protocols != RC_PROTO_BIT_CEC) - ir_lirc_unregister(dev); + lirc_unregister(dev); device_del(&dev->dev); - ida_simple_remove(&rc_ida, dev->minor); + ida_free(&rc_ida, dev->minor); if (!dev->managed_alloc) rc_free_device(dev); @@ -1990,11 +2065,14 @@ static int __init rc_core_init(void) if (rc) { pr_err("rc_core: unable to init lirc\n"); class_unregister(&rc_class); - return 0; + return rc; } led_trigger_register_simple("rc-feedback", &led_feedback); rc_map_register(&empty_map); +#ifdef CONFIG_MEDIA_CEC_RC + rc_map_register(&cec_map); +#endif return 0; } @@ -2004,6 +2082,9 @@ static void __exit rc_core_exit(void) lirc_dev_exit(); class_unregister(&rc_class); led_trigger_unregister_simple(led_feedback); +#ifdef CONFIG_MEDIA_CEC_RC + rc_map_unregister(&cec_map); +#endif rc_map_unregister(&empty_map); } @@ -2011,4 +2092,5 @@ subsys_initcall(rc_core_init); module_exit(rc_core_exit); MODULE_AUTHOR("Mauro Carvalho Chehab"); +MODULE_DESCRIPTION("Remote Controller core module"); MODULE_LICENSE("GPL v2"); |