diff options
Diffstat (limited to 'sys/arch/amd64/isa/i8042.c')
| -rw-r--r-- | sys/arch/amd64/isa/i8042.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/sys/arch/amd64/isa/i8042.c b/sys/arch/amd64/isa/i8042.c index cde70ff..3ae645d 100644 --- a/sys/arch/amd64/isa/i8042.c +++ b/sys/arch/amd64/isa/i8042.c @@ -53,6 +53,13 @@ #include <string.h> #include <assert.h> +/* From kconf(9) */ +#if !defined(__I8042_POLL) +#define I8042_POLL 0 +#else +#define I8042_POLL __I8042_POLL +#endif + #define KEY_REP_MAX 2 #define pr_trace(fmt, ...) kprintf("i8042: " fmt, ##__VA_ARGS__) @@ -424,13 +431,20 @@ i8042_init(void) quirks |= I8042_HOSTILE; pr_trace("ThinkPad T420s detected, assuming hostile\n"); pr_trace("disabling irq 1, polling as fallback\n"); - spawn(&polltd, i8042_sync_loop, NULL, 0, NULL); } - if (!ISSET(quirks, I8042_HOSTILE)) { + /* + * If the i8042 has the hostile quirk or we are + * configured to poll for events, spawn the polling + * thread. + */ + if (!ISSET(quirks, I8042_HOSTILE) && !I8042_POLL) { /* Enable interrupts */ i8042_drain(); i8042_en_intr(); + } else if (ISSET(quirks, I8042_HOSTILE) || I8042_POLL) { + spawn(&polltd, i8042_sync_loop, NULL, 0, NULL); + pr_trace("polling events\n"); } i8042_write(I8042_CMD, I8042_ENABLE_PORT0); |