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Wed, 11 Aug 2021 19:57:28 +0100 Received: from vitaly-Inspiron-5415.ad.cirrus.com (unknown [198.90.238.180]) by ediswmail.ad.cirrus.com (Postfix) with ESMTP id 78AB42A9; Wed, 11 Aug 2021 18:57:28 +0000 (UTC) From: Vitaly Rodionov To: Jaroslav Kysela , Takashi Iwai Subject: [PATCH v4 11/27] ALSA: hda/cs8409: Prevent I2C access during suspend time Date: Wed, 11 Aug 2021 19:56:38 +0100 Message-ID: <20210811185654.6837-12-vitalyr@opensource.cirrus.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210811185654.6837-1-vitalyr@opensource.cirrus.com> References: <20210811185654.6837-1-vitalyr@opensource.cirrus.com> MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: 9NAIUbOtMooVELbUE2QsI_G-hhVVoEZs X-Proofpoint-GUID: 9NAIUbOtMooVELbUE2QsI_G-hhVVoEZs X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 bulkscore=0 phishscore=0 clxscore=1015 priorityscore=1501 suspectscore=0 impostorscore=0 malwarescore=0 adultscore=0 mlxlogscore=999 mlxscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2107140000 definitions=main-2108110130 Cc: patches@opensource.cirrus.com, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Lucas Tanure X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" From: Lucas Tanure Signed-off-by: Lucas Tanure Signed-off-by: Vitaly Rodionov --- Changes in v2: - No changes Changes in v3: - No changes Changes in v4: - No changes sound/pci/hda/patch_cs8409.c | 14 ++++++++++++++ sound/pci/hda/patch_cs8409.h | 1 + 2 files changed, 15 insertions(+) diff --git a/sound/pci/hda/patch_cs8409.c b/sound/pci/hda/patch_cs8409.c index 4ad832f5c4ba..0b13bcecd778 100644 --- a/sound/pci/hda/patch_cs8409.c +++ b/sound/pci/hda/patch_cs8409.c @@ -127,9 +127,13 @@ static int cs8409_i2c_wait_complete(struct hda_codec *codec) static int cs8409_i2c_read(struct hda_codec *codec, unsigned int i2c_address, unsigned int i2c_reg, unsigned int paged) { + struct cs8409_spec *spec = codec->spec; unsigned int i2c_reg_data; unsigned int read_data; + if (spec->cs42l42_suspended) + return -EPERM; + cs8409_enable_i2c_clock(codec, 1); cs8409_vendor_coef_set(codec, CS8409_I2C_ADDR, i2c_address); @@ -172,8 +176,12 @@ static int cs8409_i2c_read(struct hda_codec *codec, unsigned int i2c_address, un static int cs8409_i2c_write(struct hda_codec *codec, unsigned int i2c_address, unsigned int i2c_reg, unsigned int i2c_data, unsigned int paged) { + struct cs8409_spec *spec = codec->spec; unsigned int i2c_reg_data; + if (spec->cs42l42_suspended) + return -EPERM; + cs8409_enable_i2c_clock(codec, 1); cs8409_vendor_coef_set(codec, CS8409_I2C_ADDR, i2c_address); @@ -371,6 +379,8 @@ static void cs8409_cs42l42_reset(struct hda_codec *codec) /* wait ~10ms */ usleep_range(10000, 15000); + spec->cs42l42_suspended = 0; + mutex_lock(&spec->cs8409_i2c_mux); /* Clear interrupts, by reading interrupt status registers */ @@ -594,6 +604,9 @@ static int cs8409_suspend(struct hda_codec *codec) /* Power down CS42L42 ASP/EQ/MIX/HP */ cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1101, 0xfe, 1); mutex_unlock(&spec->cs8409_i2c_mux); + + spec->cs42l42_suspended = 1; + /* Assert CS42L42 RTS# line */ snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_GPIO_DATA, 0); @@ -759,6 +772,7 @@ void cs8409_cs42l42_fixups(struct hda_codec *codec, const struct hda_fixup *fix, spec->cs42l42_hp_jack_in = 0; spec->cs42l42_mic_jack_in = 0; + spec->cs42l42_suspended = 1; /* Basic initial sequence for specific hw configuration */ snd_hda_sequence_write(codec, cs8409_cs42l42_init_verbs); diff --git a/sound/pci/hda/patch_cs8409.h b/sound/pci/hda/patch_cs8409.h index 1d3ce28415fa..0f2084b6ec8e 100644 --- a/sound/pci/hda/patch_cs8409.h +++ b/sound/pci/hda/patch_cs8409.h @@ -269,6 +269,7 @@ struct cs8409_spec { unsigned int cs42l42_hp_jack_in:1; unsigned int cs42l42_mic_jack_in:1; unsigned int cs42l42_volume_init:1; + unsigned int cs42l42_suspended:1; char cs42l42_hp_volume[CS42L42_HP_CH]; char cs42l42_hs_mic_volume[CS42L42_HS_MIC_CH];