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dptf: Add support for Fan and TSR options

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DPTF has several options on how to control the fan (fine-grained speed
control, minimum speed change in percentage points, and whether or not
the DPTF device should notify the Fan if it detects low speed).
Individual TSRs can also set GTSH, which is the amount of hysteresis
inherent in the measurement, either from circuitry (if analog), or in
firmware (if digital).

BUG=b:143539650
TEST=compiles

Change-Id: I42d789d877da28c163e394d7de5fb1ff339264eb
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41891
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Tim Wawrzynczak
2020-05-29 14:58:16 -06:00
committed by Patrick Georgi
parent bb5c255907
commit e4d8ebcef7
4 changed files with 89 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
src/drivers/intel/dptf/dptf.c
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@@ -62,6 +62,12 @@ static const char *dptf_acpi_name(const struct device *dev)
static void dptf_fill_ssdt(const struct device *dev)
{
struct drivers_intel_dptf_config *config = config_of(dev);
enum dptf_participant p;
bool tsr_en[DPTF_MAX_TSR] = {false};
int i;
for (p = DPTF_TEMP_SENSOR_0, i = 0; p <= DPTF_TEMP_SENSOR_3; ++p, ++i)
tsr_en[i] = is_participant_used(config, p);
dptf_write_active_policies(config->policies.active,
DPTF_MAX_ACTIVE_POLICIES);
@@ -77,6 +83,19 @@ static void dptf_fill_ssdt(const struct device *dev)
dptf_write_fan_perf(config->controls.fan_perf, DPTF_MAX_FAN_PERF_STATES);
dptf_write_power_limits(&config->controls.power_limits);
/* Fan options */
dptf_write_fan_options(config->options.fan.fine_grained_control,
config->options.fan.step_size,
config->options.fan.low_speed_notify);
/* TSR options */
for (p = DPTF_TEMP_SENSOR_0, i = 0; p <= DPTF_TEMP_SENSOR_3; ++p, ++i) {
if (tsr_en[i]) {
dptf_write_tsr_hysteresis(config->options.tsr[i].hysteresis);
dptf_write_STR(config->options.tsr[i].desc);
}
}
printk(BIOS_INFO, "\\_SB.DPTF: %s at %s\n", dev->chip_ops->name, dev_path(dev));
}