From b8efb17b3d687695b81485f606fc4e6c35a50f9a Mon Sep 17 00:00:00 2001 From: Zhang Rui Date: Tue, 5 Feb 2013 15:41:53 +0800 Subject: i915: ignore lid open event when resuming i915 driver needs to do modeset when 1. system resumes from sleep 2. lid is opened In PM_SUSPEND_MEM state, all the GPEs are cleared when system resumes, thus it is the i915_resume code does the modeset rather than intel_lid_notify(). But in PM_SUSPEND_FREEZE state, this will be broken because system is still responsive to the lid events. 1. When we close the lid in Freeze state, intel_lid_notify() sets modeset_on_lid. 2. When we reopen the lid, intel_lid_notify() will do a modeset, before the system is resumed. here is the error log, [92146.548074] WARNING: at drivers/gpu/drm/i915/intel_display.c:1028 intel_wait_for_pipe_off+0x184/0x190 [i915]() [92146.548076] Hardware name: VGN-Z540N [92146.548078] pipe_off wait timed out [92146.548167] Modules linked in: hid_generic usbhid hid snd_hda_codec_realtek snd_hda_intel snd_hda_codec parport_pc snd_hwdep ppdev snd_pcm_oss i915 snd_mixer_oss snd_pcm arc4 iwldvm snd_seq_dummy mac80211 snd_seq_oss snd_seq_midi fbcon tileblit font bitblit softcursor drm_kms_helper snd_rawmidi snd_seq_midi_event coretemp drm snd_seq kvm btusb bluetooth snd_timer iwlwifi pcmcia tpm_infineon i2c_algo_bit joydev snd_seq_device intel_agp cfg80211 snd intel_gtt yenta_socket pcmcia_rsrc sony_laptop agpgart microcode psmouse tpm_tis serio_raw mxm_wmi soundcore snd_page_alloc tpm acpi_cpufreq lpc_ich pcmcia_core tpm_bios mperf processor lp parport firewire_ohci firewire_core crc_itu_t sdhci_pci sdhci thermal e1000e [92146.548173] Pid: 4304, comm: kworker/0:0 Tainted: G W 3.8.0-rc3-s0i3-v3-test+ #9 [92146.548175] Call Trace: [92146.548189] [] warn_slowpath_common+0x72/0xa0 [92146.548227] [] ? intel_wait_for_pipe_off+0x184/0x190 [i915] [92146.548263] [] ? intel_wait_for_pipe_off+0x184/0x190 [i915] [92146.548270] [] warn_slowpath_fmt+0x33/0x40 [92146.548307] [] intel_wait_for_pipe_off+0x184/0x190 [i915] [92146.548344] [] intel_disable_pipe+0x102/0x190 [i915] [92146.548380] [] ? intel_disable_plane+0x64/0x80 [i915] [92146.548417] [] i9xx_crtc_disable+0xbc/0x150 [i915] [92146.548456] [] intel_crtc_update_dpms+0x5e/0x90 [i915] [92146.548493] [] intel_modeset_setup_hw_state+0x42f/0x8f0 [i915] [92146.548535] [] intel_lid_notify+0x9b/0xc0 [i915] [92146.548543] [] notifier_call_chain+0x43/0x60 [92146.548550] [] __blocking_notifier_call_chain+0x41/0x80 [92146.548556] [] blocking_notifier_call_chain+0x1f/0x30 [92146.548563] [] acpi_lid_send_state+0x78/0xa4 [92146.548569] [] acpi_button_notify+0x3b/0xf1 [92146.548577] [] ? acpi_os_execute+0x17/0x19 [92146.548582] [] ? acpi_ec_sync_query+0xa5/0xbc [92146.548589] [] acpi_device_notify+0x16/0x18 [92146.548595] [] acpi_ev_notify_dispatch+0x38/0x4f [92146.548600] [] acpi_os_execute_deferred+0x20/0x2b [92146.548607] [] process_one_work+0x128/0x3f0 [92146.548613] [] ? common_interrupt+0x33/0x38 [92146.548618] [] ? wake_up_worker+0x30/0x30 [92146.548624] [] ? acpi_os_wait_events_complete+0x1e/0x1e [92146.548629] [] worker_thread+0x119/0x3b0 [92146.548634] [] ? manage_workers+0x240/0x240 [92146.548640] [] kthread+0x94/0xa0 [92146.548647] [] ? ftrace_raw_output_sched_stat_runtime+0x70/0xf0 [92146.548652] [] ret_from_kernel_thread+0x1b/0x28 [92146.548658] [] ? kthread_create_on_node+0xc0/0xc0 three different modeset flags are introduced in this patch MODESET_ON_LID_OPEN: do modeset on next lid open event MODESET_DONE: modeset already done MODESET_SUSPENDED: suspended, only do modeset when system is resumed In this way, 1. when lid is closed, MODESET_ON_LID_OPEN is set so that we'll do modeset on next lid open event. 2. when lid is opened, MODESET_DONE is set so that duplicate lid open events will be ignored. 3. when system suspends, MODESET_SUSPENDED is set. In this case, we will not do modeset on any lid events. Plus, locking mechanism is also introduced to avoid racing. Signed-off-by: Zhang Rui Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_lvds.c | 33 ++++++++++++++++++++------------- 1 file changed, 20 insertions(+), 13 deletions(-) (limited to 'drivers/gpu/drm/i915/intel_lvds.c') diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 5e3f08e3fd8..bff78a3ec37 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -547,13 +547,14 @@ static const struct dmi_system_id intel_no_modeset_on_lid[] = { }; /* - * Lid events. Note the use of 'modeset_on_lid': - * - we set it on lid close, and reset it on open + * Lid events. Note the use of 'modeset': + * - we set it to MODESET_ON_LID_OPEN on lid close, + * and set it to MODESET_DONE on open * - we use it as a "only once" bit (ie we ignore - * duplicate events where it was already properly - * set/reset) - * - the suspend/resume paths will also set it to - * zero, since they restore the mode ("lid open"). + * duplicate events where it was already properly set) + * - the suspend/resume paths will set it to + * MODESET_SUSPENDED and ignore the lid open event, + * because they restore the mode ("lid open"). */ static int intel_lid_notify(struct notifier_block *nb, unsigned long val, void *unused) @@ -567,6 +568,9 @@ static int intel_lid_notify(struct notifier_block *nb, unsigned long val, if (dev->switch_power_state != DRM_SWITCH_POWER_ON) return NOTIFY_OK; + mutex_lock(&dev_priv->modeset_restore_lock); + if (dev_priv->modeset_restore == MODESET_SUSPENDED) + goto exit; /* * check and update the status of LVDS connector after receiving * the LID nofication event. @@ -575,21 +579,24 @@ static int intel_lid_notify(struct notifier_block *nb, unsigned long val, /* Don't force modeset on machines where it causes a GPU lockup */ if (dmi_check_system(intel_no_modeset_on_lid)) - return NOTIFY_OK; + goto exit; if (!acpi_lid_open()) { - dev_priv->modeset_on_lid = 1; - return NOTIFY_OK; + /* do modeset on next lid open event */ + dev_priv->modeset_restore = MODESET_ON_LID_OPEN; + goto exit; } - if (!dev_priv->modeset_on_lid) - return NOTIFY_OK; - - dev_priv->modeset_on_lid = 0; + if (dev_priv->modeset_restore == MODESET_DONE) + goto exit; drm_modeset_lock_all(dev); intel_modeset_setup_hw_state(dev, true); drm_modeset_unlock_all(dev); + dev_priv->modeset_restore = MODESET_DONE; + +exit: + mutex_unlock(&dev_priv->modeset_restore_lock); return NOTIFY_OK; } -- cgit v1.2.3 From 9d6d9f19e8146fa24903cb561e204a22232740e3 Mon Sep 17 00:00:00 2001 From: Mika Kuoppala Date: Fri, 8 Feb 2013 16:35:38 +0200 Subject: drm/i915: clean up panel fitter handling in lvds With the previous patch "drm/i915: disable shared panel fitter for pipe" we now disable the panel fitter at the right spot in the modeset sequence in the crtc functions on all platforms. Hence the disabling in intel_disable_lvds is no longer required and potentially harmful (since the plane is still enabled at this point). Similarly on the enabling side we enable the panel fitter in the lvds callback only once the plane is enabled. Which is too late. Hence move this into a new intel_pre_enable_lvds callback. Finally we can ditch lvds_encoder->pfit_dirty - this was required to work around the crtc helper semantics, but with the new i915 modeset infrastructure we should enable/disable the pfit only when enabling or disabling the entire output pipeline. So separate state tracking for the pfit is no longer required. Signed-off-by: Mika Kuoppala [danvet: Bikeshed the commit message a bit to stress that now we enable/disable the pfit on i9xx platforms at the right point of time compared to the old code.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_lvds.c | 47 ++++++++++++++++++++------------------- 1 file changed, 24 insertions(+), 23 deletions(-) (limited to 'drivers/gpu/drm/i915/intel_lvds.c') diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index bff78a3ec37..c7154bfa54c 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -51,7 +51,6 @@ struct intel_lvds_encoder { u32 pfit_control; u32 pfit_pgm_ratios; - bool pfit_dirty; bool is_dual_link; u32 reg; @@ -151,6 +150,29 @@ static void intel_pre_pll_enable_lvds(struct intel_encoder *encoder) I915_WRITE(lvds_encoder->reg, temp); } +static void intel_pre_enable_lvds(struct intel_encoder *encoder) +{ + struct drm_device *dev = encoder->base.dev; + struct intel_lvds_encoder *enc = to_lvds_encoder(&encoder->base); + struct drm_i915_private *dev_priv = dev->dev_private; + + if (HAS_PCH_SPLIT(dev) || !enc->pfit_control) + return; + + /* + * Enable automatic panel scaling so that non-native modes + * fill the screen. The panel fitter should only be + * adjusted whilst the pipe is disabled, according to + * register description and PRM. + */ + DRM_DEBUG_KMS("applying panel-fitter: %x, %x\n", + enc->pfit_control, + enc->pfit_pgm_ratios); + + I915_WRITE(PFIT_PGM_RATIOS, enc->pfit_pgm_ratios); + I915_WRITE(PFIT_CONTROL, enc->pfit_control); +} + /** * Sets the power state for the panel. */ @@ -172,22 +194,6 @@ static void intel_enable_lvds(struct intel_encoder *encoder) I915_WRITE(lvds_encoder->reg, I915_READ(lvds_encoder->reg) | LVDS_PORT_EN); - if (lvds_encoder->pfit_dirty) { - /* - * Enable automatic panel scaling so that non-native modes - * fill the screen. The panel fitter should only be - * adjusted whilst the pipe is disabled, according to - * register description and PRM. - */ - DRM_DEBUG_KMS("applying panel-fitter: %x, %x\n", - lvds_encoder->pfit_control, - lvds_encoder->pfit_pgm_ratios); - - I915_WRITE(PFIT_PGM_RATIOS, lvds_encoder->pfit_pgm_ratios); - I915_WRITE(PFIT_CONTROL, lvds_encoder->pfit_control); - lvds_encoder->pfit_dirty = false; - } - I915_WRITE(ctl_reg, I915_READ(ctl_reg) | POWER_TARGET_ON); POSTING_READ(lvds_encoder->reg); if (wait_for((I915_READ(stat_reg) & PP_ON) != 0, 1000)) @@ -217,11 +223,6 @@ static void intel_disable_lvds(struct intel_encoder *encoder) if (wait_for((I915_READ(stat_reg) & PP_ON) == 0, 1000)) DRM_ERROR("timed out waiting for panel to power off\n"); - if (lvds_encoder->pfit_control) { - I915_WRITE(PFIT_CONTROL, 0); - lvds_encoder->pfit_dirty = true; - } - I915_WRITE(lvds_encoder->reg, I915_READ(lvds_encoder->reg) & ~LVDS_PORT_EN); POSTING_READ(lvds_encoder->reg); } @@ -461,7 +462,6 @@ out: pfit_pgm_ratios != lvds_encoder->pfit_pgm_ratios) { lvds_encoder->pfit_control = pfit_control; lvds_encoder->pfit_pgm_ratios = pfit_pgm_ratios; - lvds_encoder->pfit_dirty = true; } dev_priv->lvds_border_bits = border; @@ -1101,6 +1101,7 @@ bool intel_lvds_init(struct drm_device *dev) DRM_MODE_ENCODER_LVDS); intel_encoder->enable = intel_enable_lvds; + intel_encoder->pre_enable = intel_pre_enable_lvds; intel_encoder->pre_pll_enable = intel_pre_pll_enable_lvds; intel_encoder->disable = intel_disable_lvds; intel_encoder->get_hw_state = intel_lvds_get_hw_state; -- cgit v1.2.3