diff options
Diffstat (limited to 'drivers/hid/intel-ish-hid')
| -rw-r--r-- | drivers/hid/intel-ish-hid/ipc/ipc.c | 62 | ||||
| -rw-r--r-- | drivers/hid/intel-ish-hid/ipc/utils.h | 43 |
2 files changed, 57 insertions, 48 deletions
diff --git a/drivers/hid/intel-ish-hid/ipc/ipc.c b/drivers/hid/intel-ish-hid/ipc/ipc.c index 0c9ac4d5d850..3d46cc0eec70 100644 --- a/drivers/hid/intel-ish-hid/ipc/ipc.c +++ b/drivers/hid/intel-ish-hid/ipc/ipc.c @@ -19,7 +19,6 @@ #include <linux/jiffies.h> #include "client.h" #include "hw-ish.h" -#include "utils.h" #include "hbm.h" /* For FW reset flow */ @@ -427,6 +426,59 @@ static int ipc_send_mng_msg(struct ishtp_device *dev, uint32_t msg_code, sizeof(uint32_t) + size); } +#define WAIT_FOR_FW_RDY 0x1 +#define WAIT_FOR_INPUT_RDY 0x2 + +/** + * timed_wait_for_timeout() - wait special event with timeout + * @dev: ISHTP device pointer + * @condition: indicate the condition for waiting + * @timeinc: time slice for every wait cycle, in ms + * @timeout: time in ms for timeout + * + * This function will check special event to be ready in a loop, the loop + * period is specificd in timeinc. Wait timeout will causes failure. + * + * Return: 0 for success else failure code + */ +static int timed_wait_for_timeout(struct ishtp_device *dev, int condition, + unsigned int timeinc, unsigned int timeout) +{ + bool complete = false; + int ret; + + do { + if (condition == WAIT_FOR_FW_RDY) { + complete = ishtp_fw_is_ready(dev); + } else if (condition == WAIT_FOR_INPUT_RDY) { + complete = ish_is_input_ready(dev); + } else { + ret = -EINVAL; + goto out; + } + + if (!complete) { + unsigned long left_time; + + left_time = msleep_interruptible(timeinc); + timeout -= (timeinc - left_time); + } + } while (!complete && timeout > 0); + + if (complete) + ret = 0; + else + ret = -EBUSY; + +out: + return ret; +} + +#define TIME_SLICE_FOR_FW_RDY_MS 100 +#define TIME_SLICE_FOR_INPUT_RDY_MS 100 +#define TIMEOUT_FOR_FW_RDY_MS 2000 +#define TIMEOUT_FOR_INPUT_RDY_MS 2000 + /** * ish_fw_reset_handler() - FW reset handler * @dev: ishtp device pointer @@ -456,8 +508,8 @@ static int ish_fw_reset_handler(struct ishtp_device *dev) ishtp_reset_handler(dev); if (!ish_is_input_ready(dev)) - timed_wait_for_timeout(WAIT_FOR_SEND_SLICE, - ish_is_input_ready(dev), (2 * HZ)); + timed_wait_for_timeout(dev, WAIT_FOR_INPUT_RDY, + TIME_SLICE_FOR_INPUT_RDY_MS, TIMEOUT_FOR_INPUT_RDY_MS); /* ISH FW is dead */ if (!ish_is_input_ready(dev)) @@ -472,8 +524,8 @@ static int ish_fw_reset_handler(struct ishtp_device *dev) sizeof(uint32_t)); /* Wait for ISH FW'es ILUP and ISHTP_READY */ - timed_wait_for_timeout(WAIT_FOR_SEND_SLICE, ishtp_fw_is_ready(dev), - (2 * HZ)); + timed_wait_for_timeout(dev, WAIT_FOR_FW_RDY, + TIME_SLICE_FOR_FW_RDY_MS, TIMEOUT_FOR_FW_RDY_MS); if (!ishtp_fw_is_ready(dev)) { /* ISH FW is dead */ uint32_t ish_status; diff --git a/drivers/hid/intel-ish-hid/ipc/utils.h b/drivers/hid/intel-ish-hid/ipc/utils.h deleted file mode 100644 index dc39dfe2464e..000000000000 --- a/drivers/hid/intel-ish-hid/ipc/utils.h +++ /dev/null @@ -1,43 +0,0 @@ -/* - * Utility macros of ISH - * - * Copyright (c) 2014-2016, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - */ -#ifndef UTILS__H -#define UTILS__H - -#define WAIT_FOR_SEND_SLICE (HZ / 10) -#define WAIT_FOR_CONNECT_SLICE (HZ / 10) - -/* - * Waits for specified event when a thread that triggers event - * can't signal with timeout (use whenever we may hang) - */ -#define timed_wait_for_timeout(timeinc, condition, timeout) \ - do { \ - int t = timeout; \ - do { \ - unsigned long j; \ - int done = 0; \ - \ - for (j = jiffies, done = 0; !done; ) { \ - schedule_timeout(timeinc); \ - if (time_is_before_eq_jiffies(j + timeinc)) \ - done = 1; \ - } \ - t -= timeinc; \ - if (t <= 0) \ - break; \ - } while (!(condition)); \ - } while (0) - -#endif /* UTILS__H */ |
