From mboxrd@z Thu Jan 1 00:00:00 1970 From: Charles Keepax Subject: [PATCH 10/17 v2] ASoC: mfld_machine: Update locking around use of DAPM pin API Date: Tue, 18 Feb 2014 15:22:21 +0000 Message-ID: <1392736948-26623-11-git-send-email-ckeepax@opensource.wolfsonmicro.com> References: <1392736948-26623-1-git-send-email-ckeepax@opensource.wolfsonmicro.com> Return-path: In-Reply-To: <1392736948-26623-1-git-send-email-ckeepax@opensource.wolfsonmicro.com> Sender: linux-kernel-owner@vger.kernel.org To: broonie@kernel.org Cc: myungjoo.ham@samsung.com, cw00.choi@samsung.com, dmitry.torokhov@gmail.com, lgirdwood@gmail.com, lars@metafoo.de, peter.ujfalusi@ti.com, jarkko.nikula@bitmer.com, eric.y.miao@gmail.com, haojian.zhuang@gmail.com, linux-kernel@vger.kernel.org, patches@opensource.wolfsonmicro.com, alsa-devel@alsa-project.org, linux@arm.linux.org.uk List-Id: alsa-devel@alsa-project.org The pin updates in this driver look like they are intended to be done atomically, update to do so. Signed-off-by: Charles Keepax --- sound/soc/intel/mfld_machine.c | 65 +++++++++++++++++++++++++--------------- 1 files changed, 41 insertions(+), 24 deletions(-) diff --git a/sound/soc/intel/mfld_machine.c b/sound/soc/intel/mfld_machine.c index d3d4c32..0cef32e 100644 --- a/sound/soc/intel/mfld_machine.c +++ b/sound/soc/intel/mfld_machine.c @@ -101,20 +101,27 @@ static int headset_set_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_context *dapm = &codec->dapm; if (ucontrol->value.integer.value[0] == hs_switch) return 0; + snd_soc_dapm_mutex_lock(dapm); + if (ucontrol->value.integer.value[0]) { pr_debug("hs_set HS path\n"); - snd_soc_dapm_enable_pin(&codec->dapm, "Headphones"); - snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT"); + snd_soc_dapm_enable_pin_unlocked(dapm, "Headphones"); + snd_soc_dapm_disable_pin_unlocked(dapm, "EPOUT"); } else { pr_debug("hs_set EP path\n"); - snd_soc_dapm_disable_pin(&codec->dapm, "Headphones"); - snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Headphones"); + snd_soc_dapm_enable_pin_unlocked(dapm, "EPOUT"); } - snd_soc_dapm_sync(&codec->dapm); + + snd_soc_dapm_sync_unlocked(dapm); + + snd_soc_dapm_mutex_unlock(dapm); + hs_switch = ucontrol->value.integer.value[0]; return 0; @@ -122,18 +129,20 @@ static int headset_set_switch(struct snd_kcontrol *kcontrol, static void lo_enable_out_pins(struct snd_soc_codec *codec) { - snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTL"); - snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTR"); - snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTL"); - snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTR"); - snd_soc_dapm_enable_pin(&codec->dapm, "VIB1OUT"); - snd_soc_dapm_enable_pin(&codec->dapm, "VIB2OUT"); + struct snd_soc_dapm_context *dapm = &codec->dapm; + + snd_soc_dapm_enable_pin_unlocked(dapm, "IHFOUTL"); + snd_soc_dapm_enable_pin_unlocked(dapm, "IHFOUTR"); + snd_soc_dapm_enable_pin_unlocked(dapm, "LINEOUTL"); + snd_soc_dapm_enable_pin_unlocked(dapm, "LINEOUTR"); + snd_soc_dapm_enable_pin_unlocked(dapm, "VIB1OUT"); + snd_soc_dapm_enable_pin_unlocked(dapm, "VIB2OUT"); if (hs_switch) { - snd_soc_dapm_enable_pin(&codec->dapm, "Headphones"); - snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT"); + snd_soc_dapm_enable_pin_unlocked(dapm, "Headphones"); + snd_soc_dapm_disable_pin_unlocked(dapm, "EPOUT"); } else { - snd_soc_dapm_disable_pin(&codec->dapm, "Headphones"); - snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Headphones"); + snd_soc_dapm_enable_pin_unlocked(dapm, "EPOUT"); } } @@ -148,44 +157,52 @@ static int lo_set_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_context *dapm = &codec->dapm; if (ucontrol->value.integer.value[0] == lo_dac) return 0; + snd_soc_dapm_mutex_lock(dapm); + /* we dont want to work with last state of lineout so just enable all * pins and then disable pins not required */ lo_enable_out_pins(codec); + switch (ucontrol->value.integer.value[0]) { case 0: pr_debug("set vibra path\n"); - snd_soc_dapm_disable_pin(&codec->dapm, "VIB1OUT"); - snd_soc_dapm_disable_pin(&codec->dapm, "VIB2OUT"); + snd_soc_dapm_disable_pin_unlocked(dapm, "VIB1OUT"); + snd_soc_dapm_disable_pin_unlocked(dapm, "VIB2OUT"); snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0); break; case 1: pr_debug("set hs path\n"); - snd_soc_dapm_disable_pin(&codec->dapm, "Headphones"); - snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Headphones"); + snd_soc_dapm_disable_pin_unlocked(dapm, "EPOUT"); snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x22); break; case 2: pr_debug("set spkr path\n"); - snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTL"); - snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTR"); + snd_soc_dapm_disable_pin_unlocked(dapm, "IHFOUTL"); + snd_soc_dapm_disable_pin_unlocked(dapm, "IHFOUTR"); snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x44); break; case 3: pr_debug("set null path\n"); - snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTL"); - snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTR"); + snd_soc_dapm_disable_pin_unlocked(dapm, "LINEOUTL"); + snd_soc_dapm_disable_pin_unlocked(dapm, "LINEOUTR"); snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x66); break; } - snd_soc_dapm_sync(&codec->dapm); + + snd_soc_dapm_sync_unlocked(dapm); + + snd_soc_dapm_mutex_unlock(dapm); + lo_dac = ucontrol->value.integer.value[0]; return 0; } -- 1.7.2.5