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openinput: add error support

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Signed-off-by: Filipe Laíns <lains@riseup.net>
This commit is contained in:
Filipe Laíns
2021-02-05 22:50:54 +00:00
committed by Filipe Laíns
parent 7d82bb51a6
commit c6b9cc0c2a
1 changed files with 36 additions and 1 deletions
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37
src/driver-openinput.c
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@@ -33,6 +33,7 @@
#define OI_REPORT_LONG_SIZE 32
#define OI_REPORT_MAX_SIZE OI_REPORT_LONG_SIZE
#define OI_REPORT_DATA_INDEX 3
/* protocol function pages */
#define OI_PAGE_INFO 0x00
@@ -44,6 +45,11 @@
#define OI_FUNCTION_VERSION 0x00
#define OI_FUNCTION_FW_INFO 0x01
/* error page (0xFF) */
#define OI_ERROR_INVALID_VALUE 0x01
#define OI_ERROR_UNSUPPORTED_FUNCTION 0x02
#define OI_ERROR_CUSTOM 0xFE
static unsigned int report_rates[] = { 125, 250, 500, 750, 1000 };
@@ -64,6 +70,31 @@ struct oi_report_t {
uint8_t data[29];
} __attribute__((__packed__));
static const char*
openinput_get_error_string(struct oi_report_t *report)
{
char help_str[OI_REPORT_LONG_SIZE - OI_REPORT_DATA_INDEX + 1] = {0};
char *str;
switch (report->function) {
case OI_ERROR_INVALID_VALUE:
xasprintf(&str, "Invalid value (in position %u)", report->data[2]);
break;
case OI_ERROR_CUSTOM:
memcpy(help_str, report->data, sizeof(help_str)-1); /* copy error string */
xasprintf(&str, "Custom error (%s)", help_str);
break;
case OI_ERROR_UNSUPPORTED_FUNCTION:
xasprintf(&str, "Unsupported function (0x%02x, 0x%02x)", report->data[0], report->data[1]);
break;
default:
xasprintf(&str, "Unkown error (%u)", report->function);
break;
}
return str;
}
static size_t
openinput_get_report_size(unsigned int report)
{
@@ -102,7 +133,11 @@ openinput_send_report(struct ratbag_device *device, struct oi_report_t *report)
memcpy(report, buffer, openinput_get_report_size(buffer[0]));
// TODO: check for error
/* check for error */
if (report->function_page == OI_PAGE_ERROR) {
log_error(device->ratbag, "openinput: %s\n", openinput_get_error_string(report));
return report->function;
}
return 0;
}