From patchwork Mon Dec 2 13:26:10 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rodrigo Vivi X-Patchwork-Id: 3265471 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id A7B82BEEAD for ; Mon, 2 Dec 2013 13:27:05 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 76C7B20263 for ; Mon, 2 Dec 2013 13:27:04 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 415F620260 for ; Mon, 2 Dec 2013 13:27:03 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5B8C8FAC49; Mon, 2 Dec 2013 05:27:02 -0800 (PST) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mail-qe0-f42.google.com (mail-qe0-f42.google.com [209.85.128.42]) by gabe.freedesktop.org (Postfix) with ESMTP id C10BAFAC49 for ; Mon, 2 Dec 2013 05:27:00 -0800 (PST) Received: by mail-qe0-f42.google.com with SMTP id b4so12400619qen.29 for ; Mon, 02 Dec 2013 05:27:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Y4zwxEnBAKXL86f34QCibHFbwGw0oC2pQrel33oQCFU=; b=dF7+WoP8/hhFkDuqm9SgQI/mGhyBmCtX8Js8ZHG3dYQr36ufjN49Ww7YwI2igpvcLb F0sAaZ3Ir7lv7sxib7zY4FgTMNabGX4CwpAdtBzuNSmx65al80XXZYCjr4sINgDFJEiq N8bY2AIXbJBuqKiVKE0MTHuFdAy34SFPXOSYYz0WqFRlxJM8olljTQln77yiM4Y+2kRG RwxL102zNWjh/0Az6rEaP8hXI5SMJ1Pi7afCWpsbtW4dLiV1Ewglis0Li11BJo+Z1T44 FFSQghttIsPkKdrEcQp/SFSOWdya2be3N9GxQV3bNjzGai9MfDLbj4ptzPUYoSgNdbrI 8LLw== X-Received: by 10.224.168.13 with SMTP id s13mr9810671qay.18.1385990820360; Mon, 02 Dec 2013 05:27:00 -0800 (PST) Received: from localhost.localdomain (200.188.217.18.dedicated.neoviatelecom.com.br. [200.188.217.18]) by mx.google.com with ESMTPSA id x10sm123248366qas.5.2013.12.02.05.26.47 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 02 Dec 2013 05:26:59 -0800 (PST) From: Rodrigo Vivi To: intel-gfx@lists.freedesktop.org Date: Mon, 2 Dec 2013 11:26:10 -0200 Message-Id: <1385990771-3877-6-git-send-email-rodrigo.vivi@gmail.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1385990771-3877-1-git-send-email-rodrigo.vivi@gmail.com> References: <1385990771-3877-1-git-send-email-rodrigo.vivi@gmail.com> Cc: Jani Nikula Subject: [Intel-gfx] [PATCH 5/6] drm/i915: parse backlight modulation frequency from the BIOS VBT X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jani Nikula We don't actually do anything with the information yet, but parse and log what's in the VBT. Signed-off-by: Jani Nikula Signed-off-by: Rodrigo Vivi Reviewed-by: Rodrigo Vivi --- drivers/gpu/drm/i915/i915_drv.h | 5 +++++ drivers/gpu/drm/i915/intel_bios.c | 29 +++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_bios.h | 16 ++++++++++++++++ 3 files changed, 50 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 780f815..687eee2 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1185,6 +1185,11 @@ struct intel_vbt_data { int edp_bpp; struct edp_power_seq edp_pps; + struct { + u16 pwm_freq_hz; + bool active_low_pwm; + } backlight; + /* MIPI DSI */ struct { u16 panel_id; diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index e4fba39..720ce55 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -281,6 +281,34 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv, } } +static void +parse_lfp_backlight(struct drm_i915_private *dev_priv, struct bdb_header *bdb) +{ + const struct bdb_lfp_backlight_data *backlight_data; + const struct bdb_lfp_backlight_data_entry *entry; + + backlight_data = find_section(bdb, BDB_LVDS_BACKLIGHT); + if (!backlight_data) + return; + + if (backlight_data->entry_size != sizeof(backlight_data->data[0])) { + DRM_DEBUG_KMS("Unsupported backlight data entry size %u\n", + backlight_data->entry_size); + return; + } + + entry = &backlight_data->data[panel_type]; + + dev_priv->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz; + dev_priv->vbt.backlight.active_low_pwm = entry->active_low_pwm; + DRM_DEBUG_KMS("VBT backlight PWM modulation frequency %u Hz, " + "active %s, min brightness %u, level %u\n", + dev_priv->vbt.backlight.pwm_freq_hz, + dev_priv->vbt.backlight.active_low_pwm ? "low" : "high", + entry->min_brightness, + backlight_data->level[panel_type]); +} + /* Try to find sdvo panel data */ static void parse_sdvo_panel_data(struct drm_i915_private *dev_priv, @@ -894,6 +922,7 @@ intel_parse_bios(struct drm_device *dev) parse_general_features(dev_priv, bdb); parse_general_definitions(dev_priv, bdb); parse_lfp_panel_data(dev_priv, bdb); + parse_lfp_backlight(dev_priv, bdb); parse_sdvo_panel_data(dev_priv, bdb); parse_sdvo_device_mapping(dev_priv, bdb); parse_device_mapping(dev_priv, bdb); diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h index 81ed58c..282de5e 100644 --- a/drivers/gpu/drm/i915/intel_bios.h +++ b/drivers/gpu/drm/i915/intel_bios.h @@ -373,6 +373,22 @@ struct bdb_lvds_lfp_data { struct bdb_lvds_lfp_data_entry data[16]; } __packed; +struct bdb_lfp_backlight_data_entry { + u8 type:2; + u8 active_low_pwm:1; + u8 obsolete1:5; + u16 pwm_freq_hz; + u8 min_brightness; + u8 obsolete2; + u8 obsolete3; +} __packed; + +struct bdb_lfp_backlight_data { + u8 entry_size; + struct bdb_lfp_backlight_data_entry data[16]; + u8 level[16]; +} __packed; + struct aimdb_header { char signature[16]; char oem_device[20];