From: sagar.a.kamble@intel.com Date: Fri, 3 Feb 2017 08:28:33 +0000 (+0530) Subject: drm/i915: Do RPM Wake during GuC/HuC status read X-Git-Tag: v5.15~11060^2~37^2~192 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3582ad1361644ba0f937cf6aa59d5c9ead6763ca;p=platform%2Fkernel%2Flinux-starfive.git drm/i915: Do RPM Wake during GuC/HuC status read HUC_STATUS, GUC_STATUS, SOFT_SCRATCH registers are read in debugfs and getparam ioctl. This patch covers those accesses by RPM get/put. v2: Covering access in i915_getparam(I915_PARAM_HUC_STATUS) (ChrisW) Cc: Arkadiusz Hiler Cc: Anusha Srivatsa Cc: Fiedorowicz, Lukasz Signed-off-by: Sagar Arun Kamble Reviewed-by: Arkadiusz Hiler Signed-off-by: Tvrtko Ursulin Link: http://patchwork.freedesktop.org/patch/msgid/1486110513-12130-1-git-send-email-sagar.a.kamble@intel.com --- diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 20b3d13..11f02fb 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2412,7 +2412,9 @@ static int i915_huc_load_status_info(struct seq_file *m, void *data) seq_printf(m, "\tRSA: offset is %d; size = %d\n", huc_fw->rsa_offset, huc_fw->rsa_size); + intel_runtime_pm_get(dev_priv); seq_printf(m, "\nHuC status 0x%08x:\n", I915_READ(HUC_STATUS2)); + intel_runtime_pm_put(dev_priv); return 0; } @@ -2444,6 +2446,8 @@ static int i915_guc_load_status_info(struct seq_file *m, void *data) seq_printf(m, "\tRSA: offset is %d; size = %d\n", guc_fw->rsa_offset, guc_fw->rsa_size); + intel_runtime_pm_get(dev_priv); + tmp = I915_READ(GUC_STATUS); seq_printf(m, "\nGuC status 0x%08x:\n", tmp); @@ -2457,6 +2461,8 @@ static int i915_guc_load_status_info(struct seq_file *m, void *data) for (i = 0; i < 16; i++) seq_printf(m, "\t%2d: \t0x%x\n", i, I915_READ(SOFT_SCRATCH(i))); + intel_runtime_pm_put(dev_priv); + return 0; } diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 50de009..c992d40 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -319,10 +319,9 @@ static int i915_getparam(struct drm_device *dev, void *data, value = INTEL_INFO(dev_priv)->sseu.min_eu_in_pool; break; case I915_PARAM_HUC_STATUS: - /* The register is already force-woken. We dont need - * any rpm here - */ + intel_runtime_pm_get(dev_priv); value = I915_READ(HUC_STATUS2) & HUC_FW_VERIFIED; + intel_runtime_pm_put(dev_priv); break; case I915_PARAM_MMAP_GTT_VERSION: /* Though we've started our numbering from 1, and so class all