From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wang Xingchao Subject: [PATCH 2/2] ALSA: hda - get realtime ELD info when codec suspended Date: Mon, 24 Jun 2013 07:45:24 -0400 Message-ID: <1372074324-13563-2-git-send-email-xingchao.wang@linux.intel.com> References: <1372074324-13563-1-git-send-email-xingchao.wang@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by alsa0.perex.cz (Postfix) with ESMTP id 332CD2618F2 for ; Mon, 24 Jun 2013 12:35:01 +0200 (CEST) In-Reply-To: <1372074324-13563-1-git-send-email-xingchao.wang@linux.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: tiwai@suse.de Cc: alsa-devel@alsa-project.org, Wang Xingchao , xingchao.wang@intel.com List-Id: alsa-devel@alsa-project.org when controller/codec in runtime suspended mode, monitor hotplug would not trigger unsolicited event. This patch tries to power up codec and hdmi driver would probe ELD info again. Signed-off-by: Wang Xingchao --- sound/pci/hda/hda_eld.c | 6 ++++++ sound/pci/hda/hda_local.h | 1 + 2 files changed, 7 insertions(+) diff --git a/sound/pci/hda/hda_eld.c b/sound/pci/hda/hda_eld.c index d0d7ac1..914712a 100644 --- a/sound/pci/hda/hda_eld.c +++ b/sound/pci/hda/hda_eld.c @@ -482,6 +482,7 @@ static void hdmi_print_eld_info(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { struct hdmi_eld *eld = entry->private_data; + struct hda_codec *codec = eld->codec; struct parsed_hdmi_eld *e = &eld->info; char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE]; int i; @@ -500,11 +501,14 @@ static void hdmi_print_eld_info(struct snd_info_entry *entry, [4 ... 7] = "reserved" }; + snd_hda_power_up(codec); + mutex_lock(&eld->lock); snd_iprintf(buffer, "monitor_present\t\t%d\n", eld->monitor_present); snd_iprintf(buffer, "eld_valid\t\t%d\n", eld->eld_valid); if (!eld->eld_valid) { mutex_unlock(&eld->lock); + snd_hda_power_down(codec); return; } snd_iprintf(buffer, "monitor_name\t\t%s\n", e->monitor_name); @@ -529,6 +533,7 @@ static void hdmi_print_eld_info(struct snd_info_entry *entry, for (i = 0; i < e->sad_count; i++) hdmi_print_sad_info(i, e->sad + i, buffer); mutex_unlock(&eld->lock); + snd_hda_power_down(codec); } static void hdmi_write_eld_info(struct snd_info_entry *entry, @@ -614,6 +619,7 @@ int snd_hda_eld_proc_new(struct hda_codec *codec, struct hdmi_eld *eld, entry->c.text.write = hdmi_write_eld_info; entry->mode |= S_IWUSR; eld->proc_entry = entry; + eld->codec = codec; return 0; } diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h index e0bf753..1aaf8b6 100644 --- a/sound/pci/hda/hda_local.h +++ b/sound/pci/hda/hda_local.h @@ -747,6 +747,7 @@ struct hdmi_eld { #ifdef CONFIG_PROC_FS struct snd_info_entry *proc_entry; #endif + struct hda_codec *codec; }; int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid); -- 1.8.1.2