From 3c4ca58c12a3bf71433425df534dfbb85d8a5dc5 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Fri, 31 May 2013 16:33:23 -0300 Subject: [PATCH] drm/i915: add enable_ips module option IPS is still enabled by default. Feature requested by the power management team. This should also help testing the feature on some early pre-production hardware where there were relationship problems between IPS and PSR. v2: Rebase on top of the newest IPS implementation. v3: Check i915_enable_ips at compute_config, not supports_ips, so the kernel parameter will be ignored at haswell_get_pipe_config. Requested-by: Kristen Accardi Signed-off-by: Paulo Zanoni Reviewed-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.c | 4 ++++ drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/intel_display.c | 3 ++- 3 files changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index a4e8f16..b23cd63 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -128,6 +128,10 @@ module_param_named(disable_power_well, i915_disable_power_well, int, 0600); MODULE_PARM_DESC(disable_power_well, "Disable the power well when possible (default: false)"); +int i915_enable_ips __read_mostly = 1; +module_param_named(enable_ips, i915_enable_ips, int, 0600); +MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)"); + static struct drm_driver driver; extern int intel_agp_enabled; diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index a18da3c..be869f2 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1470,6 +1470,7 @@ extern bool i915_enable_hangcheck __read_mostly; extern int i915_enable_ppgtt __read_mostly; extern unsigned int i915_preliminary_hw_support __read_mostly; extern int i915_disable_power_well __read_mostly; +extern int i915_enable_ips __read_mostly; extern int i915_suspend(struct drm_device *dev, pm_message_t state); extern int i915_resume(struct drm_device *dev); diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index acfc6a1..c112466 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4034,7 +4034,8 @@ retry: static void hsw_compute_ips_config(struct intel_crtc *crtc, struct intel_crtc_config *pipe_config) { - pipe_config->ips_enabled = hsw_crtc_supports_ips(crtc) && + pipe_config->ips_enabled = i915_enable_ips && + hsw_crtc_supports_ips(crtc) && pipe_config->pipe_bpp == 24; } -- 2.7.4