diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_pmdemand.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_pmdemand.c | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_pmdemand.c b/drivers/gpu/drm/i915/display/intel_pmdemand.c index 975520322136..1253376c7654 100644 --- a/drivers/gpu/drm/i915/display/intel_pmdemand.c +++ b/drivers/gpu/drm/i915/display/intel_pmdemand.c @@ -5,6 +5,8 @@ #include <linux/bitops.h> +#include <drm/drm_print.h> + #include "i915_reg.h" #include "i915_utils.h" #include "intel_atomic.h" @@ -476,13 +478,34 @@ static bool intel_pmdemand_req_complete(struct intel_display *display) XELPDP_PMDEMAND_REQ_ENABLE); } -static void intel_pmdemand_wait(struct intel_display *display) +static void intel_pmdemand_poll(struct intel_display *display) { - if (!wait_event_timeout(display->pmdemand.waitqueue, - intel_pmdemand_req_complete(display), - msecs_to_jiffies_timeout(10))) + const unsigned int timeout_ms = 10; + u32 status; + int ret; + + ret = intel_de_wait_custom(display, XELPDP_INITIATE_PMDEMAND_REQUEST(1), + XELPDP_PMDEMAND_REQ_ENABLE, 0, + 50, timeout_ms, &status); + + if (ret == -ETIMEDOUT) drm_err(display->drm, - "timed out waiting for Punit PM Demand Response\n"); + "timed out waiting for Punit PM Demand Response within %ums (status 0x%08x)\n", + timeout_ms, status); +} + +static void intel_pmdemand_wait(struct intel_display *display) +{ + /* Wa_14024400148 For lnl use polling method */ + if (DISPLAY_VER(display) == 20) { + intel_pmdemand_poll(display); + } else { + if (!wait_event_timeout(display->pmdemand.waitqueue, + intel_pmdemand_req_complete(display), + msecs_to_jiffies_timeout(10))) + drm_err(display->drm, + "timed out waiting for Punit PM Demand Response\n"); + } } /* Required to be programmed during Display Init Sequences. */ @@ -609,7 +632,7 @@ intel_pmdemand_program_params(struct intel_display *display, goto unlock; drm_dbg_kms(display->drm, - "initate pmdemand request values: (0x%x 0x%x)\n", + "initiate pmdemand request values: (0x%x 0x%x)\n", mod_reg1, mod_reg2); intel_de_rmw(display, XELPDP_INITIATE_PMDEMAND_REQUEST(1), 0, |