static u32 item_udata(struct hid_item *item)
{
switch (item->size) {
- case 1: return item->data.u8;
- case 2: return item->data.u16;
- case 4: return item->data.u32;
+ case 1: return item->data.u8;
+ case 2: return item->data.u16;
+ case 4: return item->data.u32;
}
return 0;
}
static s32 item_sdata(struct hid_item *item)
{
switch (item->size) {
- case 1: return item->data.s8;
- case 2: return item->data.s16;
- case 4: return item->data.s32;
+ case 1: return item->data.s8;
+ case 2: return item->data.s16;
+ case 4: return item->data.s32;
}
return 0;
}
static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
{
switch (item->tag) {
+ case HID_GLOBAL_ITEM_TAG_PUSH:
- case HID_GLOBAL_ITEM_TAG_PUSH:
-
- if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
- dbg_hid("global enviroment stack overflow\n");
- return -1;
- }
-
- memcpy(parser->global_stack + parser->global_stack_ptr++,
- &parser->global, sizeof(struct hid_global));
- return 0;
+ if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
+ dbg_hid("global enviroment stack overflow\n");
+ return -1;
+ }
- case HID_GLOBAL_ITEM_TAG_POP:
+ memcpy(parser->global_stack + parser->global_stack_ptr++,
+ &parser->global, sizeof(struct hid_global));
+ return 0;
- if (!parser->global_stack_ptr) {
- dbg_hid("global enviroment stack underflow\n");
- return -1;
- }
+ case HID_GLOBAL_ITEM_TAG_POP:
- memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr,
- sizeof(struct hid_global));
- return 0;
+ if (!parser->global_stack_ptr) {
+ dbg_hid("global enviroment stack underflow\n");
+ return -1;
+ }
- case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
- parser->global.usage_page = item_udata(item);
- return 0;
+ memcpy(&parser->global, parser->global_stack +
+ --parser->global_stack_ptr, sizeof(struct hid_global));
+ return 0;
- case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
- parser->global.logical_minimum = item_sdata(item);
- return 0;
+ case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
+ parser->global.usage_page = item_udata(item);
+ return 0;
- case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
- if (parser->global.logical_minimum < 0)
- parser->global.logical_maximum = item_sdata(item);
- else
- parser->global.logical_maximum = item_udata(item);
- return 0;
+ case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
+ parser->global.logical_minimum = item_sdata(item);
+ return 0;
- case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
- parser->global.physical_minimum = item_sdata(item);
- return 0;
+ case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
+ if (parser->global.logical_minimum < 0)
+ parser->global.logical_maximum = item_sdata(item);
+ else
+ parser->global.logical_maximum = item_udata(item);
+ return 0;
- case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
- if (parser->global.physical_minimum < 0)
- parser->global.physical_maximum = item_sdata(item);
- else
- parser->global.physical_maximum = item_udata(item);
- return 0;
+ case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
+ parser->global.physical_minimum = item_sdata(item);
+ return 0;
- case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
- parser->global.unit_exponent = item_sdata(item);
- return 0;
+ case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
+ if (parser->global.physical_minimum < 0)
+ parser->global.physical_maximum = item_sdata(item);
+ else
+ parser->global.physical_maximum = item_udata(item);
+ return 0;
- case HID_GLOBAL_ITEM_TAG_UNIT:
- parser->global.unit = item_udata(item);
- return 0;
+ case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
+ parser->global.unit_exponent = item_sdata(item);
+ return 0;
- case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
- if ((parser->global.report_size = item_udata(item)) > 32) {
- dbg_hid("invalid report_size %d\n", parser->global.report_size);
- return -1;
- }
- return 0;
+ case HID_GLOBAL_ITEM_TAG_UNIT:
+ parser->global.unit = item_udata(item);
+ return 0;
- case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
- if ((parser->global.report_count = item_udata(item)) > HID_MAX_USAGES) {
- dbg_hid("invalid report_count %d\n", parser->global.report_count);
- return -1;
- }
- return 0;
+ case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
+ parser->global.report_size = item_udata(item);
+ if (parser->global.report_size > 32) {
+ dbg_hid("invalid report_size %d\n",
+ parser->global.report_size);
+ return -1;
+ }
+ return 0;
- case HID_GLOBAL_ITEM_TAG_REPORT_ID:
- if ((parser->global.report_id = item_udata(item)) == 0) {
- dbg_hid("report_id 0 is invalid\n");
- return -1;
- }
- return 0;
+ case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
+ parser->global.report_count = item_udata(item);
+ if (parser->global.report_count > HID_MAX_USAGES) {
+ dbg_hid("invalid report_count %d\n",
+ parser->global.report_count);
+ return -1;
+ }
+ return 0;
- default:
- dbg_hid("unknown global tag 0x%x\n", item->tag);
+ case HID_GLOBAL_ITEM_TAG_REPORT_ID:
+ parser->global.report_id = item_udata(item);
+ if (parser->global.report_id == 0) {
+ dbg_hid("report_id 0 is invalid\n");
return -1;
+ }
+ return 0;
+
+ default:
+ dbg_hid("unknown global tag 0x%x\n", item->tag);
+ return -1;
}
}
data = item_udata(item);
switch (item->tag) {
-
- case HID_LOCAL_ITEM_TAG_DELIMITER:
-
- if (data) {
- /*
- * We treat items before the first delimiter
- * as global to all usage sets (branch 0).
- * In the moment we process only these global
- * items and the first delimiter set.
- */
- if (parser->local.delimiter_depth != 0) {
- dbg_hid("nested delimiters\n");
- return -1;
- }
- parser->local.delimiter_depth++;
- parser->local.delimiter_branch++;
- } else {
- if (parser->local.delimiter_depth < 1) {
- dbg_hid("bogus close delimiter\n");
- return -1;
- }
- parser->local.delimiter_depth--;
+ case HID_LOCAL_ITEM_TAG_DELIMITER:
+
+ if (data) {
+ /*
+ * We treat items before the first delimiter
+ * as global to all usage sets (branch 0).
+ * In the moment we process only these global
+ * items and the first delimiter set.
+ */
+ if (parser->local.delimiter_depth != 0) {
+ dbg_hid("nested delimiters\n");
+ return -1;
}
- return 1;
-
- case HID_LOCAL_ITEM_TAG_USAGE:
-
- if (parser->local.delimiter_branch > 1) {
- dbg_hid("alternative usage ignored\n");
- return 0;
+ parser->local.delimiter_depth++;
+ parser->local.delimiter_branch++;
+ } else {
+ if (parser->local.delimiter_depth < 1) {
+ dbg_hid("bogus close delimiter\n");
+ return -1;
}
+ parser->local.delimiter_depth--;
+ }
+ return 1;
- if (item->size <= 2)
- data = (parser->global.usage_page << 16) + data;
+ case HID_LOCAL_ITEM_TAG_USAGE:
- return hid_add_usage(parser, data);
+ if (parser->local.delimiter_branch > 1) {
+ dbg_hid("alternative usage ignored\n");
+ return 0;
+ }
- case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
+ if (item->size <= 2)
+ data = (parser->global.usage_page << 16) + data;
- if (parser->local.delimiter_branch > 1) {
- dbg_hid("alternative usage ignored\n");
- return 0;
- }
+ return hid_add_usage(parser, data);
- if (item->size <= 2)
- data = (parser->global.usage_page << 16) + data;
+ case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
- parser->local.usage_minimum = data;
+ if (parser->local.delimiter_branch > 1) {
+ dbg_hid("alternative usage ignored\n");
return 0;
+ }
- case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
+ if (item->size <= 2)
+ data = (parser->global.usage_page << 16) + data;
- if (parser->local.delimiter_branch > 1) {
- dbg_hid("alternative usage ignored\n");
- return 0;
- }
+ parser->local.usage_minimum = data;
+ return 0;
- if (item->size <= 2)
- data = (parser->global.usage_page << 16) + data;
+ case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
- for (n = parser->local.usage_minimum; n <= data; n++)
- if (hid_add_usage(parser, n)) {
- dbg_hid("hid_add_usage failed\n");
- return -1;
- }
+ if (parser->local.delimiter_branch > 1) {
+ dbg_hid("alternative usage ignored\n");
return 0;
+ }
- default:
+ if (item->size <= 2)
+ data = (parser->global.usage_page << 16) + data;
- dbg_hid("unknown local item tag 0x%x\n", item->tag);
- return 0;
+ for (n = parser->local.usage_minimum; n <= data; n++)
+ if (hid_add_usage(parser, n)) {
+ dbg_hid("hid_add_usage failed\n");
+ return -1;
+ }
+ return 0;
+
+ default:
+
+ dbg_hid("unknown local item tag 0x%x\n", item->tag);
+ return 0;
}
return 0;
}
data = item_udata(item);
switch (item->tag) {
- case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
- ret = open_collection(parser, data & 0xff);
- break;
- case HID_MAIN_ITEM_TAG_END_COLLECTION:
- ret = close_collection(parser);
- break;
- case HID_MAIN_ITEM_TAG_INPUT:
- ret = hid_add_field(parser, HID_INPUT_REPORT, data);
- break;
- case HID_MAIN_ITEM_TAG_OUTPUT:
- ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
- break;
- case HID_MAIN_ITEM_TAG_FEATURE:
- ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
- break;
- default:
- dbg_hid("unknown main item tag 0x%x\n", item->tag);
- ret = 0;
+ case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
+ ret = open_collection(parser, data & 0xff);
+ break;
+ case HID_MAIN_ITEM_TAG_END_COLLECTION:
+ ret = close_collection(parser);
+ break;
+ case HID_MAIN_ITEM_TAG_INPUT:
+ ret = hid_add_field(parser, HID_INPUT_REPORT, data);
+ break;
+ case HID_MAIN_ITEM_TAG_OUTPUT:
+ ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
+ break;
+ case HID_MAIN_ITEM_TAG_FEATURE:
+ ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
+ break;
+ default:
+ dbg_hid("unknown main item tag 0x%x\n", item->tag);
+ ret = 0;
}
memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
item->size = b & 3;
switch (item->size) {
+ case 0:
+ return start;
+
+ case 1:
+ if ((end - start) < 1)
+ return NULL;
+ item->data.u8 = *start++;
+ return start;
+
+ case 2:
+ if ((end - start) < 2)
+ return NULL;
+ item->data.u16 = get_unaligned_le16(start);
+ start = (__u8 *)((__le16 *)start + 1);
+ return start;
- case 0:
- return start;
-
- case 1:
- if ((end - start) < 1)
- return NULL;
- item->data.u8 = *start++;
- return start;
-
- case 2:
- if ((end - start) < 2)
- return NULL;
- item->data.u16 = get_unaligned_le16(start);
- start = (__u8 *)((__le16 *)start + 1);
- return start;
-
- case 3:
- item->size++;
- if ((end - start) < 4)
- return NULL;
- item->data.u32 = get_unaligned_le32(start);
- start = (__u8 *)((__le32 *)start + 1);
- return start;
+ case 3:
+ item->size++;
+ if ((end - start) < 4)
+ return NULL;
+ item->data.u32 = get_unaligned_le32(start);
+ start = (__u8 *)((__le32 *)start + 1);
+ return start;
}
return NULL;
static s32 snto32(__u32 value, unsigned n)
{
switch (n) {
- case 8: return ((__s8)value);
- case 16: return ((__s16)value);
- case 32: return ((__s32)value);
+ case 8: return ((__s8)value);
+ case 16: return ((__s16)value);
+ case 32: return ((__s32)value);
}
return value & (1 << (n - 1)) ? value | (-1 << n) : value;
}
projects / linux-2.6-omap-h63xx.git / blobdiff