From a726915cef1daab57aad4c5b5e4773822f0a4bf8 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Tue, 20 Nov 2012 14:50:08 +0100 Subject: [PATCH] drm/i915: resurrect panel lid handling But disabled by default. This essentially reverts commit bcd5023c961a44c7149936553b6929b2b233dd27 Author: Dave Airlie Date: Mon Mar 14 14:17:55 2011 +1000 drm/i915: disable opregion lid detection for now but leaves the autodetect mode disabled. There's also the explicit lid status option added in commit fca874092597ef946b8f07031d8c31c58b212144 Author: Chris Wilson Date: Thu Feb 17 13:44:48 2011 +0000 drm/i915: Add a module parameter to ignore lid status Which overloaded the meaning for the panel_ignore_lid parameter even more. To fix up this mess, give the non-negative numbers 0,1 the original meaning back and use negative numbers to force a given state. So now we have 1 - disable autodetect, return unknown 0 - enable autodetect -1 - force to disconnected/lid closed -2 - force to connected/lid open v2: My C programmer license has been revoked ... v3: Beautify the code a bit, as suggested by Chris Wilson. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=27622 Tested-by: Andreas Sturmlechner Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.c | 6 +++--- drivers/gpu/drm/i915/intel_panel.c | 25 +++++++++++-------------- 2 files changed, 14 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index a3d754d..f5b505a 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -47,11 +47,11 @@ MODULE_PARM_DESC(modeset, unsigned int i915_fbpercrtc __always_unused = 0; module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400); -int i915_panel_ignore_lid __read_mostly = 0; +int i915_panel_ignore_lid __read_mostly = 1; module_param_named(panel_ignore_lid, i915_panel_ignore_lid, int, 0600); MODULE_PARM_DESC(panel_ignore_lid, - "Override lid status (0=autodetect [default], 1=lid open, " - "-1=lid closed)"); + "Override lid status (0=autodetect, 1=autodetect disabled [default], " + "-1=force lid closed, -2=force lid open)"); unsigned int i915_powersave __read_mostly = 1; module_param_named(powersave, i915_powersave, int, 0600); diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index 41d4635..c758ad2 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -275,7 +275,7 @@ static void intel_panel_actually_set_backlight(struct drm_device *dev, u32 level } tmp = I915_READ(BLC_PWM_CTL); - if (INTEL_INFO(dev)->gen < 4) + if (INTEL_INFO(dev)->gen < 4) level <<= 1; tmp &= ~BACKLIGHT_DUTY_CYCLE_MASK; I915_WRITE(BLC_PWM_CTL, tmp | level); @@ -374,26 +374,23 @@ static void intel_panel_init_backlight(struct drm_device *dev) enum drm_connector_status intel_panel_detect(struct drm_device *dev) { -#if 0 struct drm_i915_private *dev_priv = dev->dev_private; -#endif - - if (i915_panel_ignore_lid) - return i915_panel_ignore_lid > 0 ? - connector_status_connected : - connector_status_disconnected; - /* opregion lid state on HP 2540p is wrong at boot up, - * appears to be either the BIOS or Linux ACPI fault */ -#if 0 /* Assume that the BIOS does not lie through the OpRegion... */ - if (dev_priv->opregion.lid_state) + if (!i915_panel_ignore_lid && dev_priv->opregion.lid_state) { return ioread32(dev_priv->opregion.lid_state) & 0x1 ? connector_status_connected : connector_status_disconnected; -#endif + } - return connector_status_unknown; + switch (i915_panel_ignore_lid) { + case -2: + return connector_status_connected; + case -1: + return connector_status_disconnected; + default: + return connector_status_unknown; + } } #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE -- 1.8.3.2