From 4869111443ce957a1603fe01fefbd4708d00b971 Mon Sep 17 00:00:00 2001 From: Aaron Durbin Date: Tue, 23 Sep 2014 16:30:53 -0500 Subject: chromeec: use stopwatch API Simplify the SPI timeout by using the stopwatch. BUG=None BRANCH=None TEST=Built nyan. Confirmed stopwatch works independently. Change-Id: Ida26a0748d4b5a6a28aa8f6e2b92fe2ee4cbe17f Signed-off-by: Patrick Georgi Original-Commit-Id: 900d7ac826b76d49290033c87849bf776684f2c1 Original-Change-Id: I84b7949060326b7c6cc1872420b93bd44604c4d3 Original-Signed-off-by: Aaron Durbin Original-Reviewed-on: https://chromium-review.googlesource.com/219493 Original-Reviewed-by: Julius Werner Original-Reviewed-by: Furquan Shaikh Original-Reviewed-by: David Hendricks Reviewed-on: http://review.coreboot.org/8816 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/ec/google/chromeec/ec_spi.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'src/ec') diff --git a/src/ec/google/chromeec/ec_spi.c b/src/ec/google/chromeec/ec_spi.c index 6107836153..4b3e587266 100644 --- a/src/ec/google/chromeec/ec_spi.c +++ b/src/ec/google/chromeec/ec_spi.c @@ -57,9 +57,9 @@ static int crosec_spi_io(size_t req_size, size_t resp_size, void *context) } uint8_t byte; - struct mono_time start; - struct rela_time rt; - timer_monotonic_get(&start); + struct stopwatch sw; + // Wait 1s for a framing byte. + stopwatch_init_usecs_expire(&sw, USECS_PER_SEC); while (1) { if (spi_xfer(slave, NULL, 0, &byte, sizeof(byte))) { printk(BIOS_ERR, "%s: Failed to receive byte.\n", @@ -70,9 +70,7 @@ static int crosec_spi_io(size_t req_size, size_t resp_size, void *context) if (byte == EcFramingByte) break; - // Wait 1s for a framing byte. - rt = current_time_from(&start); - if (rela_time_in_microseconds(&rt) > 1000 * 1000) { + if (stopwatch_expired(&sw)) { printk(BIOS_ERR, "%s: Timeout waiting for framing byte.\n", __func__); -- cgit v1.2.3