From patchwork Fri Nov 19 15:53:53 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Garrett X-Patchwork-Id: 339841 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oAJFv5vF026197 for ; Fri, 19 Nov 2010 15:57:05 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755059Ab0KSPz3 (ORCPT ); Fri, 19 Nov 2010 10:55:29 -0500 Received: from mx1.redhat.com ([209.132.183.28]:56538 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754059Ab0KSPz2 (ORCPT ); Fri, 19 Nov 2010 10:55:28 -0500 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id oAJFsTuX018917 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 19 Nov 2010 10:54:29 -0500 Received: from cavan.codon.org.uk (ovpn-113-35.phx2.redhat.com [10.3.113.35]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id oAJFsS7f029195 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NO); Fri, 19 Nov 2010 10:54:29 -0500 Received: from 209-6-41-104.c3-0.smr-ubr1.sbo-smr.ma.cable.rcn.com ([209.6.41.104] helo=localhost.localdomain) by cavan.codon.org.uk with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.69) (envelope-from ) id 1PJTI8-00016m-Eq; Fri, 19 Nov 2010 15:54:24 +0000 From: Matthew Garrett To: linux-kernel@vger.kernel.org Cc: rpurdie@rpsys.net, akpm@linux-foundation.org, nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-acpi@vger.kernel.org, lenb@kernel.org, Matthew Garrett Subject: [PATCH 2/5] i915: Add native backlight control Date: Fri, 19 Nov 2010 10:53:53 -0500 Message-Id: <1290182036-30484-2-git-send-email-mjg@redhat.com> In-Reply-To: <1290182036-30484-1-git-send-email-mjg@redhat.com> References: <1290182036-30484-1-git-send-email-mjg@redhat.com> X-SA-Do-Not-Run: Yes X-SA-Exim-Connect-IP: 209.6.41.104 X-SA-Exim-Mail-From: mjg@redhat.com X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Fri, 19 Nov 2010 15:57:05 +0000 (UTC) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 90414ae..f311ce4 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -36,6 +36,7 @@ #include #include #include +#include /* General customization: */ @@ -679,6 +680,7 @@ typedef struct drm_i915_private { int child_dev_num; struct child_device_config *child_dev; struct drm_connector *int_lvds_connector; + struct drm_connector *int_edp_connector; bool mchbar_need_disable; @@ -707,6 +709,8 @@ typedef struct drm_i915_private { /* list of fbdev register on this device */ struct intel_fbdev *fbdev; + + struct backlight_device *backlight; } drm_i915_private_t; /** driver private structure attached to each drm_gem_object */ diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index c8e0055..7cfefb5 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1639,6 +1639,11 @@ done: static void intel_dp_destroy (struct drm_connector *connector) { + struct drm_device *dev = connector->dev; + + if (intel_dpd_is_edp(dev)) + intel_panel_backlight_destroy(dev); + drm_sysfs_connector_remove(connector); drm_connector_cleanup(connector); kfree(connector); @@ -1868,6 +1873,8 @@ intel_dp_init(struct drm_device *dev, int output_reg) DRM_MODE_TYPE_PREFERRED; } } + dev_priv->int_edp_connector = connector; + intel_panel_backlight_setup(dev); } intel_dp_add_properties(intel_dp, connector); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 21551fe..7917bec 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -256,6 +256,8 @@ extern void intel_pch_panel_fitting(struct drm_device *dev, extern u32 intel_panel_get_max_backlight(struct drm_device *dev); extern u32 intel_panel_get_backlight(struct drm_device *dev); extern void intel_panel_set_backlight(struct drm_device *dev, u32 level); +extern int intel_panel_backlight_setup(struct drm_device *dev); +extern void intel_panel_backlight_destroy(struct drm_device *dev); extern void intel_crtc_load_lut(struct drm_crtc *crtc); extern void intel_encoder_prepare (struct drm_encoder *encoder); diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 4324a32..f69a7b8 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -569,6 +569,8 @@ static void intel_lvds_destroy(struct drm_connector *connector) struct drm_device *dev = connector->dev; struct drm_i915_private *dev_priv = dev->dev_private; + intel_panel_backlight_destroy(dev); + if (dev_priv->lid_notifier.notifier_call) acpi_lid_notifier_unregister(&dev_priv->lid_notifier); drm_sysfs_connector_remove(connector); @@ -1026,6 +1028,9 @@ out: /* keep the LVDS connector */ dev_priv->int_lvds_connector = connector; drm_sysfs_connector_add(connector); + + intel_panel_backlight_setup(dev); + return; failed: diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c index 9b0d9a8..bf79c02 100644 --- a/drivers/gpu/drm/i915/intel_opregion.c +++ b/drivers/gpu/drm/i915/intel_opregion.c @@ -224,7 +224,6 @@ void intel_opregion_asle_intr(struct drm_device *dev) asle->aslc = asle_stat; } -/* Only present on Ironlake+ */ void intel_opregion_gse_intr(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index 92ff8f3..1eaa66e 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -218,3 +218,70 @@ void intel_panel_set_backlight(struct drm_device *dev, u32 level) tmp &= ~BACKLIGHT_DUTY_CYCLE_MASK; I915_WRITE(BLC_PWM_CTL, tmp | level); } + +#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE +static int intel_panel_update_status(struct backlight_device *bd) +{ + struct drm_device *dev = bl_get_data(bd); + intel_panel_set_backlight(dev, bd->props.brightness); + return 0; +} + +static int intel_panel_get_brightness(struct backlight_device *bd) +{ + struct drm_device *dev = bl_get_data(bd); + return intel_panel_get_backlight(dev); +} + +static const struct backlight_ops intel_panel_bl_ops = { + .update_status = intel_panel_update_status, + .get_brightness = intel_panel_get_brightness, +}; + +int intel_panel_backlight_setup(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + struct backlight_properties props; + struct drm_connector *connector; + + if (dev_priv->int_lvds_connector) + connector = dev_priv->int_lvds_connector; + else if (dev_priv->int_edp_connector) + connector = dev_priv->int_edp_connector; + else + return -ENODEV; + + props.type = BACKLIGHT_RAW; + props.max_brightness = intel_panel_get_max_backlight(dev); + dev_priv->backlight = + backlight_device_register("intel_backlight", + &connector->kdev, dev, + &intel_panel_bl_ops, &props); + + if (IS_ERR(dev_priv->backlight)) { + DRM_ERROR("Failed to register backlight: %ld\n", + PTR_ERR(dev_priv->backlight)); + dev_priv->backlight = NULL; + return -ENODEV; + } + dev_priv->backlight->props.brightness = intel_panel_get_backlight(dev); + return 0; +} + +void intel_panel_backlight_destroy(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + if (dev_priv->backlight) + backlight_device_unregister(dev_priv->backlight); +} +#else +int intel_panel_backlight_setup(struct drm_device *dev) +{ + return 0; +} + +void intel_panel_backlight_destroy(struct drm_device *dev) +{ + return; +} +#endif