diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_display_power.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display_power.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c index c92f3e736228..da4babfd6bcb 100644 --- a/drivers/gpu/drm/i915/display/intel_display_power.c +++ b/drivers/gpu/drm/i915/display/intel_display_power.c @@ -3,6 +3,7 @@ * Copyright © 2019 Intel Corporation */ +#include <linux/iopoll.h> #include <linux/string_helpers.h> #include "soc/intel_dram.h" @@ -10,6 +11,7 @@ #include "i915_drv.h" #include "i915_irq.h" #include "i915_reg.h" +#include "i915_utils.h" #include "intel_backlight_regs.h" #include "intel_cdclk.h" #include "intel_clock_gating.h" @@ -1278,6 +1280,7 @@ static void hsw_disable_lcpll(struct intel_display *display, bool switch_to_fclk, bool allow_power_down) { u32 val; + int ret; assert_can_disable_lcpll(display); @@ -1287,8 +1290,10 @@ static void hsw_disable_lcpll(struct intel_display *display, val |= LCPLL_CD_SOURCE_FCLK; intel_de_write(display, LCPLL_CTL, val); - if (wait_for_us(intel_de_read(display, LCPLL_CTL) & - LCPLL_CD_SOURCE_FCLK_DONE, 1)) + ret = intel_de_wait_custom(display, LCPLL_CTL, + LCPLL_CD_SOURCE_FCLK_DONE, LCPLL_CD_SOURCE_FCLK_DONE, + 1, 0, NULL); + if (ret) drm_err(display->drm, "Switching to FCLK failed\n"); val = intel_de_read(display, LCPLL_CTL); @@ -1306,8 +1311,10 @@ static void hsw_disable_lcpll(struct intel_display *display, hsw_write_dcomp(display, val); ndelay(100); - if (wait_for((hsw_read_dcomp(display) & - D_COMP_RCOMP_IN_PROGRESS) == 0, 1)) + ret = poll_timeout_us(val = hsw_read_dcomp(display), + (val & D_COMP_RCOMP_IN_PROGRESS) == 0, + 100, 1000, false); + if (ret) drm_err(display->drm, "D_COMP RCOMP still in progress\n"); if (allow_power_down) { @@ -1324,6 +1331,7 @@ static void hsw_restore_lcpll(struct intel_display *display) { struct drm_i915_private __maybe_unused *dev_priv = to_i915(display->drm); u32 val; + int ret; val = intel_de_read(display, LCPLL_CTL); @@ -1358,8 +1366,10 @@ static void hsw_restore_lcpll(struct intel_display *display) if (val & LCPLL_CD_SOURCE_FCLK) { intel_de_rmw(display, LCPLL_CTL, LCPLL_CD_SOURCE_FCLK, 0); - if (wait_for_us((intel_de_read(display, LCPLL_CTL) & - LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1)) + ret = intel_de_wait_custom(display, LCPLL_CTL, + LCPLL_CD_SOURCE_FCLK_DONE, 0, + 1, 0, NULL); + if (ret) drm_err(display->drm, "Switching back to LCPLL failed\n"); } @@ -2155,8 +2165,6 @@ void intel_power_domains_resume(struct intel_display *display) power_domains->init_wakeref = intel_display_power_get(display, POWER_DOMAIN_INIT); } - - intel_power_domains_verify_state(display); } #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM) |