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exynos: convert to stopwatch API 

Instead of open coding monotonic timer usage,
use the stopwatch API.

BUG=None
BRANCH=None
TEST=None

Change-Id: I1c541c1c9f3fde0dec9163ad6cc94322538ac7f7
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 46ede0897687da6bcf730a8904f25e5a4485d6cd
Original-Change-Id: Ia63a05850a1b6afdc42c2422332f77af516d27e3
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/219716
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/8825
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Aaron Durbin 2014-09-24 10:27:29 -05:00 committed by Patrick Georgi
parent 515bd135d2
commit 43933466e7
5 changed files with 25 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
src/soc/samsung/exynos5250/clock.c
View File

@ -597,7 +597,7 @@ int clock_epll_set_rate(unsigned long rate)
unsigned int epll_con, epll_con_k;
unsigned int i;
unsigned int lockcnt;
struct mono_time current, end;
struct stopwatch sw;
epll_con = readl(&exynos_clock->epll_con0);
epll_con &= ~((EPLL_CON0_LOCK_DET_EN_MASK <<
@ -631,17 +631,16 @@ int clock_epll_set_rate(unsigned long rate)
writel(epll_con, &exynos_clock->epll_con0);
writel(epll_con_k, &exynos_clock->epll_con1);
timer_monotonic_get(&current);
end = current;
mono_time_add_msecs(&end, TIMEOUT_EPLL_LOCK);
stopwatch_init_msecs_expire(&sw, TIMEOUT_EPLL_LOCK);
while (!(readl(&exynos_clock->epll_con0) &
(0x1 << EXYNOS5_EPLLCON0_LOCKED_SHIFT))) {
if (mono_time_after(&current, &end)) {
printk(BIOS_DEBUG, "%s: Timeout waiting for EPLL lock\n", __func__);
if (stopwatch_expired(&sw)) {
printk(BIOS_DEBUG,
"%s: Timeout waiting for EPLL lock\n",
__func__);
return -1;
}
timer_monotonic_get(&current);
}
return 0;

18
src/soc/samsung/exynos5250/dp-reg.c
View File

@ -120,7 +120,7 @@ unsigned int s5p_dp_get_pll_lock_status(struct s5p_dp_device *dp)
int s5p_dp_init_analog_func(struct s5p_dp_device *dp)
{
u32 reg;
struct mono_time current, end;
struct stopwatch sw;
struct exynos5_dp *base = dp->base;
writel(0x00, &base->dp_phy_pd);
@ -135,17 +135,14 @@ int s5p_dp_init_analog_func(struct s5p_dp_device *dp)
clrbits_le32(&base->dp_pll_ctl, DP_PLL_PD);
timer_monotonic_get(&current);
end = current;
mono_time_add_msecs(&end, PLL_LOCK_TIMEOUT);
stopwatch_init_msecs_expire(&sw, PLL_LOCK_TIMEOUT);
while (s5p_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
if (mono_time_after(&current, &end)) {
if (stopwatch_expired(&sw)) {
printk(BIOS_ERR, "%s: PLL is not locked\n",
__func__);
return -1;
}
timer_monotonic_get(&current);
}
}
@ -435,13 +432,11 @@ void s5p_dp_enable_video_master(struct s5p_dp_device *dp)
int s5p_dp_is_video_stream_on(struct s5p_dp_device *dp)
{
u32 reg, i = 0;
struct mono_time current, end;
struct stopwatch sw;
struct exynos5_dp *base = dp->base;
/* Wait for 4 VSYNC_DET interrupts */
timer_monotonic_get(&current);
end = current;
mono_time_add_msecs(&end, STREAM_ON_TIMEOUT);
stopwatch_init_msecs_expire(&sw, STREAM_ON_TIMEOUT);
do {
reg = readl(&base->common_int_sta_1);
@ -451,8 +446,7 @@ int s5p_dp_is_video_stream_on(struct s5p_dp_device *dp)
}
if (i == 4)
break;
timer_monotonic_get(&current);
} while (mono_time_before(&current, &end));
} while (!stopwatch_expired(&sw));
if (i != 4) {
printk(BIOS_DEBUG, "s5p_dp_is_video_stream_on timeout\n");

20
src/soc/samsung/exynos5250/fb.c
View File

@ -181,7 +181,7 @@ static int s5p_dp_config_video(struct s5p_dp_device *dp,
{
int timeout = 0;
struct exynos5_dp *base = dp->base;
struct mono_time start, current, end;
struct stopwatch sw;
s5p_dp_config_video_slave_mode(dp, video_info);
s5p_dp_set_video_color_format(dp, video_info->color_depth,
@ -194,20 +194,17 @@ static int s5p_dp_config_video(struct s5p_dp_device *dp,
return -ERR_PLL_NOT_UNLOCKED;
}
timer_monotonic_get(&start);
end = current = start;
mono_time_add_usecs(&end, STREAM_ON_TIMEOUT * USECS_PER_MSEC);
stopwatch_init_msecs_expire(&sw, STREAM_ON_TIMEOUT);
do {
if (s5p_dp_is_slave_video_stream_clock_on(dp) == 0) {
timeout++;
break;
}
timer_monotonic_get(&current);
} while (mono_time_before(&current, &end));
} while (!stopwatch_expired(&sw));
if (!timeout) {
printk(BIOS_ERR, "Video Clock Not ok after %ldus.\n",
mono_time_diff_microseconds(&start, &end));
stopwatch_duration_usecs(&sw));
return -ERR_VIDEO_CLOCK_BAD;
}
@ -402,23 +399,20 @@ static int s5p_dp_hw_link_training(struct s5p_dp_device *dp,
int pll_is_locked = 0;
u32 data;
int lane;
struct mono_time current, end;
struct stopwatch sw;
struct exynos5_dp *base = dp->base;
/* Stop Video */
clrbits_le32(&base->video_ctl_1, VIDEO_EN);
timer_monotonic_get(&current);
end = current;
mono_time_add_msecs(&end, PLL_LOCK_TIMEOUT);
stopwatch_init_msecs_expire(&sw, PLL_LOCK_TIMEOUT);
while ((pll_is_locked = s5p_dp_get_pll_lock_status(dp)) == PLL_UNLOCKED) {
if (mono_time_after(&current, &end)) {
if (stopwatch_expired(&sw)) {
/* Ignore this error, and try to continue */
printk(BIOS_ERR, "PLL is not locked yet.\n");
break;
}
timer_monotonic_get(&current);
}
printk(BIOS_SPEW, "PLL is %slocked\n",
pll_is_locked == PLL_LOCKED ? "": "not ");

9
src/soc/samsung/exynos5420/clock.c
View File

@ -561,7 +561,7 @@ int clock_epll_set_rate(unsigned long rate)
unsigned int epll_con, epll_con_k;
unsigned int i;
unsigned int lockcnt;
struct mono_time current, end;
struct stopwatch sw;
epll_con = readl(&exynos_clock->epll_con0);
epll_con &= ~((EPLL_CON0_LOCK_DET_EN_MASK <<
@ -595,17 +595,14 @@ int clock_epll_set_rate(unsigned long rate)
writel(epll_con, &exynos_clock->epll_con0);
writel(epll_con_k, &exynos_clock->epll_con1);
timer_monotonic_get(&current);
end = current;
mono_time_add_msecs(&end, TIMEOUT_EPLL_LOCK);
stopwatch_init_msecs_expire(&sw, TIMEOUT_EPLL_LOCK);
while (!(readl(&exynos_clock->epll_con0) &
(0x1 << EXYNOS5_EPLLCON0_LOCKED_SHIFT))) {
if (mono_time_after(&current, &end)) {
if (stopwatch_expired(&sw)) {
printk(BIOS_DEBUG, "%s: Timeout waiting for EPLL lock\n", __func__);
return -1;
}
timer_monotonic_get(&current);
}
return 0;

9
src/soc/samsung/exynos5420/i2c.c
View File

@ -415,16 +415,13 @@ static int hsi2c_check_transfer(struct hsi2c_regs *regs)
*/
static int hsi2c_wait_for_transfer(struct hsi2c_regs *i2c)
{
struct mono_time current, end;
struct stopwatch sw;
timer_monotonic_get(&current);
end = current;
mono_time_add_usecs(&end, Hsi2cTimeout * 1000);
while (mono_time_before(&current, &end)) {
stopwatch_init_msecs_expire(&sw, Hsi2cTimeout);
while (!stopwatch_expired(&sw)) {
int ret = hsi2c_check_transfer(i2c);
if (ret)
return ret;
timer_monotonic_get(&current);
}
return 0;
}