14  * and/or sell copies of the Software, and to permit persons to whom the
18  * all copies or substantial portions of the Software.
20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM
25  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
31 #include "chardev/char-serial.h"
38 #define WC_OUTPUT_BUF_MAX_LEN 512
39 #define WC_COMMAND_MAX_LEN 60
41 #define WC_L7(n) ((n) & 127)
42 #define WC_M7(n) (((n) >> 7) & 127)
43 #define WC_H2(n) ((n) >> 14)
45 #define WC_L4(n) ((n) & 15)
46 #define WC_H4(n) (((n) >> 4) & 15)
49 #define WC_MODEL_STRING_LENGTH 18
50 uint8_t WC_MODEL_STRING[WC_MODEL_STRING_LENGTH + 1] = "~#CT-0045R,V1.3-5,";
52 #define WC_CONFIG_STRING_LENGTH 8
55 #define WC_FULL_CONFIG_STRING_LENGTH 61
88 #define TYPE_CHARDEV_WCTABLET "chardev-wctablet"
97     tablet->query_index -= count;  in wctablet_shift_input()
98     memmove(tablet->query, tablet->query + count, tablet->query_index);  in wctablet_shift_input()
99     tablet->query[tablet->query_index] = 0;  in wctablet_shift_input()
104     if (tablet->outlen + count > sizeof(tablet->outbuf)) {  in wctablet_queue_output()
108     memcpy(tablet->outbuf + tablet->outlen, buf, count);  in wctablet_queue_output()
109     tablet->outlen += count;  in wctablet_queue_output()
116     tablet->query_index = 0;  in wctablet_reset()
117     tablet->outlen = 0;  in wctablet_reset()
119     tablet->send_events = false;  in wctablet_reset()
126     if (tablet->line_speed != 9600) {  in wctablet_queue_event()
130     int newX = tablet->axis[INPUT_AXIS_X] * 0.1537;  in wctablet_queue_event()
131     int nexY = tablet->axis[INPUT_AXIS_Y] * 0.1152;  in wctablet_queue_event()
141     if (tablet->btns[INPUT_BUTTON_LEFT]) {  in wctablet_queue_event()
155     switch (evt->type) {  in wctablet_input_event()
157         move = evt->u.abs.data;  in wctablet_input_event()
158         tablet->axis[move->axis] = move->value;  in wctablet_input_event()
162         btn = evt->u.btn.data;  in wctablet_input_event()
163         tablet->btns[btn->button] = btn->down;  in wctablet_input_event()
176     if (tablet->send_events) {  in wctablet_input_sync()
191     int len, canWrite;  in wctablet_chr_accept_input()  local
194     len = canWrite;  in wctablet_chr_accept_input()
195     if (len > tablet->outlen) {  in wctablet_chr_accept_input()
196         len = tablet->outlen;  in wctablet_chr_accept_input()
199     if (len) {  in wctablet_chr_accept_input()
200         qemu_chr_be_write(chr, tablet->outbuf, len);  in wctablet_chr_accept_input()
201         tablet->outlen -= len;  in wctablet_chr_accept_input()
202         if (tablet->outlen) {  in wctablet_chr_accept_input()
203             memmove(tablet->outbuf, tablet->outbuf + len, tablet->outlen);  in wctablet_chr_accept_input()
209                               const uint8_t *buf, int len)  in wctablet_chr_write()  argument
215     if (tablet->line_speed != 9600) {  in wctablet_chr_write()
216         return len;  in wctablet_chr_write()
218     for (i = 0; i < len && tablet->query_index < sizeof(tablet->query) - 1; i++) {  in wctablet_chr_write()
219         tablet->query[tablet->query_index++] = buf[i];  in wctablet_chr_write()
221     tablet->query[tablet->query_index] = 0;  in wctablet_chr_write()
223     while (tablet->query_index > 0 && (tablet->query[0] == '@'  ||  in wctablet_chr_write()
224                                        tablet->query[0] == '\r' ||  in wctablet_chr_write()
225                                        tablet->query[0] == '\n')) {  in wctablet_chr_write()
228     if (!tablet->query_index) {  in wctablet_chr_write()
229         return len;  in wctablet_chr_write()
232     if (strncmp((char *)tablet->query, "~#", 2) == 0) {  in wctablet_chr_write()
238         return len;  in wctablet_chr_write()
242     pos = strchr((char *)tablet->query, '\r');  in wctablet_chr_write()
244         pos = strchr((char *)tablet->query, '\n');  in wctablet_chr_write()
247         return len;  in wctablet_chr_write()
249     clen = pos - (char *)tablet->query;  in wctablet_chr_write()
252     if (strncmp((char *)tablet->query, "RE", 2) == 0 &&  in wctablet_chr_write()
259     } else if (strncmp((char *)tablet->query, "ST", 2) == 0 &&  in wctablet_chr_write()
263         tablet->send_events = true;  in wctablet_chr_write()
266     } else if (strncmp((char *)tablet->query, "SP", 2) == 0 &&  in wctablet_chr_write()
270         tablet->send_events = false;  in wctablet_chr_write()
272     } else if (strncmp((char *)tablet->query, "TS", 2) == 0 &&  in wctablet_chr_write()
274         unsigned int input = tablet->query[2];  in wctablet_chr_write()
289         tablet->query[clen] = 0; /* terminate line for printing */  in wctablet_chr_write()
290         trace_wct_cmd_other((char *)tablet->query);  in wctablet_chr_write()
295     return len;  in wctablet_chr_write()
306         if (tablet->line_speed != ssp->speed) {  in wctablet_chr_ioctl()
307             trace_wct_speed(ssp->speed);  in wctablet_chr_ioctl()
309             tablet->line_speed = ssp->speed;  in wctablet_chr_ioctl()
313         return -ENOTSUP;  in wctablet_chr_ioctl()
322     if (tablet->hs) {  in wctablet_chr_finalize()
323         qemu_input_handler_unregister(tablet->hs);  in wctablet_chr_finalize()
337     memcpy(tablet->outbuf, WC_FULL_CONFIG_STRING, WC_FULL_CONFIG_STRING_LENGTH);  in wctablet_chr_open()
338     tablet->outlen = WC_FULL_CONFIG_STRING_LENGTH;  in wctablet_chr_open()
339     tablet->query_index = 0;  in wctablet_chr_open()
341     tablet->hs = qemu_input_handler_register((DeviceState *)tablet,  in wctablet_chr_open()
349     cc->open = wctablet_chr_open;  in wctablet_chr_class_init()
350     cc->chr_write = wctablet_chr_write;  in wctablet_chr_class_init()
351     cc->chr_ioctl = wctablet_chr_ioctl;  in wctablet_chr_class_init()
352     cc->chr_accept_input = wctablet_chr_accept_input;  in wctablet_chr_class_init()