diff options
Diffstat (limited to 'drivers/media/IR/ir-rc6-decoder.c')
| -rw-r--r-- | drivers/media/IR/ir-rc6-decoder.c | 153 |
1 files changed, 7 insertions, 146 deletions
diff --git a/drivers/media/IR/ir-rc6-decoder.c b/drivers/media/IR/ir-rc6-decoder.c index 2bf479f4f1bc..f1624b8279bc 100644 --- a/drivers/media/IR/ir-rc6-decoder.c +++ b/drivers/media/IR/ir-rc6-decoder.c @@ -36,10 +36,6 @@ #define RC6_STARTBIT_MASK 0x08 /* for the header bits */ #define RC6_6A_MCE_TOGGLE_MASK 0x8000 /* for the body bits */ -/* Used to register rc6_decoder clients */ -static LIST_HEAD(decoder_list); -static DEFINE_SPINLOCK(decoder_lock); - enum rc6_mode { RC6_MODE_0, RC6_MODE_6A, @@ -58,89 +54,8 @@ enum rc6_state { STATE_FINISHED, }; -struct decoder_data { - struct list_head list; - struct ir_input_dev *ir_dev; - int enabled:1; - - /* State machine control */ - enum rc6_state state; - u8 header; - u32 body; - struct ir_raw_event prev_ev; - bool toggle; - unsigned count; - unsigned wanted_bits; -}; - - -/** - * get_decoder_data() - gets decoder data - * @input_dev: input device - * - * Returns the struct decoder_data that corresponds to a device - */ -static struct decoder_data *get_decoder_data(struct ir_input_dev *ir_dev) -{ - struct decoder_data *data = NULL; - - spin_lock(&decoder_lock); - list_for_each_entry(data, &decoder_list, list) { - if (data->ir_dev == ir_dev) - break; - } - spin_unlock(&decoder_lock); - return data; -} - -static ssize_t store_enabled(struct device *d, - struct device_attribute *mattr, - const char *buf, - size_t len) +static enum rc6_mode rc6_mode(struct rc6_dec *data) { - unsigned long value; - struct ir_input_dev *ir_dev = dev_get_drvdata(d); - struct decoder_data *data = get_decoder_data(ir_dev); - - if (!data) - return -EINVAL; - - if (strict_strtoul(buf, 10, &value) || value > 1) - return -EINVAL; - - data->enabled = value; - - return len; -} - -static ssize_t show_enabled(struct device *d, - struct device_attribute *mattr, char *buf) -{ - struct ir_input_dev *ir_dev = dev_get_drvdata(d); - struct decoder_data *data = get_decoder_data(ir_dev); - - if (!data) - return -EINVAL; - - if (data->enabled) - return sprintf(buf, "1\n"); - else - return sprintf(buf, "0\n"); -} - -static DEVICE_ATTR(enabled, S_IRUGO | S_IWUSR, show_enabled, store_enabled); - -static struct attribute *decoder_attributes[] = { - &dev_attr_enabled.attr, - NULL -}; - -static struct attribute_group decoder_attribute_group = { - .name = "rc6_decoder", - .attrs = decoder_attributes, -}; - -static enum rc6_mode rc6_mode(struct decoder_data *data) { switch (data->header & RC6_MODE_MASK) { case 0: return RC6_MODE_0; @@ -162,16 +77,12 @@ static enum rc6_mode rc6_mode(struct decoder_data *data) { */ static int ir_rc6_decode(struct input_dev *input_dev, struct ir_raw_event ev) { - struct decoder_data *data; struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); + struct rc6_dec *data = &ir_dev->raw->rc6; u32 scancode; u8 toggle; - data = get_decoder_data(ir_dev); - if (!data) - return -EINVAL; - - if (!data->enabled) + if (!(ir_dev->raw->enabled_protocols & IR_TYPE_RC6)) return 0; if (IS_RESET(ev)) { @@ -223,12 +134,11 @@ again: if (ev.pulse) data->header |= 1; data->count++; - data->prev_ev = ev; data->state = STATE_HEADER_BIT_END; return 0; case STATE_HEADER_BIT_END: - if (!is_transition(&ev, &data->prev_ev)) + if (!is_transition(&ev, &ir_dev->raw->prev_ev)) break; if (data->count == RC6_HEADER_NBITS) @@ -244,12 +154,11 @@ again: break; data->toggle = ev.pulse; - data->prev_ev = ev; data->state = STATE_TOGGLE_END; return 0; case STATE_TOGGLE_END: - if (!is_transition(&ev, &data->prev_ev) || + if (!is_transition(&ev, &ir_dev->raw->prev_ev) || !geq_margin(ev.duration, RC6_TOGGLE_END, RC6_UNIT / 2)) break; @@ -259,7 +168,6 @@ again: } data->state = STATE_BODY_BIT_START; - data->prev_ev = ev; decrease_duration(&ev, RC6_TOGGLE_END); data->count = 0; @@ -291,13 +199,11 @@ again: if (ev.pulse) data->body |= 1; data->count++; - data->prev_ev = ev; - data->state = STATE_BODY_BIT_END; return 0; case STATE_BODY_BIT_END: - if (!is_transition(&ev, &data->prev_ev)) + if (!is_transition(&ev, &ir_dev->raw->prev_ev)) break; if (data->count == data->wanted_bits) @@ -348,54 +254,9 @@ out: return -EINVAL; } -static int ir_rc6_register(struct input_dev *input_dev) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); - struct decoder_data *data; - int rc; - - rc = sysfs_create_group(&ir_dev->dev.kobj, &decoder_attribute_group); - if (rc < 0) - return rc; - - data = kzalloc(sizeof(*data), GFP_KERNEL); - if (!data) { - sysfs_remove_group(&ir_dev->dev.kobj, &decoder_attribute_group); - return -ENOMEM; - } - - data->ir_dev = ir_dev; - data->enabled = 1; - - spin_lock(&decoder_lock); - list_add_tail(&data->list, &decoder_list); - spin_unlock(&decoder_lock); - - return 0; -} - -static int ir_rc6_unregister(struct input_dev *input_dev) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); - static struct decoder_data *data; - - data = get_decoder_data(ir_dev); - if (!data) - return 0; - - sysfs_remove_group(&ir_dev->dev.kobj, &decoder_attribute_group); - - spin_lock(&decoder_lock); - list_del(&data->list); - spin_unlock(&decoder_lock); - - return 0; -} - static struct ir_raw_handler rc6_handler = { + .protocols = IR_TYPE_RC6, .decode = ir_rc6_decode, - .raw_register = ir_rc6_register, - .raw_unregister = ir_rc6_unregister, }; static int __init ir_rc6_decode_init(void) |