From patchwork Thu Dec 7 10:28:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neil Armstrong X-Patchwork-Id: 13483098 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="HWXeC1kI" Received: from mail-wm1-x336.google.com (mail-wm1-x336.google.com [IPv6:2a00:1450:4864:20::336]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 899A713D for ; Thu, 7 Dec 2023 02:28:17 -0800 (PST) Received: by mail-wm1-x336.google.com with SMTP id 5b1f17b1804b1-40b595bf5d2so9105685e9.2 for ; Thu, 07 Dec 2023 02:28:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1701944896; x=1702549696; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=rRVBeXF+QSqrae9EL7nBYIMaZo7QiMUVKXfXpluBSag=; b=HWXeC1kIKzmf5AiEPznokbibPecZth5TFXGKT+POxITG+SnOCk4RJVsn+CPmlwNVDc KOOoTrWccgL3l0z/KDXUjR+YVIWk9N1PXSnFMiwGAlHI5So3UkCUYqRAHJY14IYg4B22 K4QYRQI6dN3ARzsYZz4WyqUU2aL5g/nZ3JCZgh2WmKjQoB68DMV0GjFwoluBaaEDTIRe lwqiDoRyyIlxTSrZg6mOTws53TuBl9bWDjmp19IcNNnqR+laZ5psORq6ZOKqcuJCXl8i yZ2qgKcIWC/Z2PXvlhRiLNBCAU27V1VoPv6fbVl7r45H6zxKZS4DwhagH5EBnWcVJrQM kh8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701944896; x=1702549696; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=rRVBeXF+QSqrae9EL7nBYIMaZo7QiMUVKXfXpluBSag=; b=iaHTJ2tkrTt7dJXT+7RBQb6Hp3eL2sAVkYyCBUDKwf95IBaWoRI0AS1sMOwrbL20KO v1K9xpQiZ5TmiYjWavaA4SHgQvv3YauNcZaVJBcoXAZRGSSsaX88TtjH7OlxMjPTX7xJ clLByJ2iFWeD2jpv3LUv6CtpUTytRjfaJm09DTPpsA4rfl5aZPl/1w6obDG7jkvgIxJX ZDa4vdtfWtYbj4XenqgENTBR6S6Cu1JEbMMx2HojZNMSz6/9K/CWcl6rbs+XbdJ4Dm2d SM7mvK1XI6DqXyVpnKU3RQC+UGsFS1ooSsHEkPxOW846+7dZoVzCzLS8y6H+lw9rQB1T c+xQ== X-Gm-Message-State: AOJu0YzXffbCUC9Pv78eyD5zq4WKVXg+Ll+ZZ/t4GC5daYLavyfFaspn TNrJ2opbTZU5RhzQDu4ic2U77Q== X-Google-Smtp-Source: AGHT+IEoVGGgN9nP5Y5W4ze68y2z2GMtQ1PqYW6GjYZy9xwAe5PAAlxdBr6436AATMGvSrv1yClzRw== X-Received: by 2002:a7b:c850:0:b0:40c:2b16:1e3 with SMTP id c16-20020a7bc850000000b0040c2b1601e3mr248852wml.84.1701944896038; Thu, 07 Dec 2023 02:28:16 -0800 (PST) Received: from arrakeen.starnux.net ([2a01:e0a:982:cbb0:52eb:f6ff:feb3:451a]) by smtp.gmail.com with ESMTPSA id d2-20020adfe2c2000000b003333d2c6420sm1073412wrj.74.2023.12.07.02.28.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Dec 2023 02:28:15 -0800 (PST) From: Neil Armstrong Date: Thu, 07 Dec 2023 11:28:06 +0100 Subject: [PATCH v3 3/5] ASoC: codec: wcd-mbhc-v2: add support when connected behind an USB-C audio mux Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20231207-topic-sm8650-upstream-wcd939x-codec-v3-3-6df9585ec7c8@linaro.org> References: <20231207-topic-sm8650-upstream-wcd939x-codec-v3-0-6df9585ec7c8@linaro.org> In-Reply-To: <20231207-topic-sm8650-upstream-wcd939x-codec-v3-0-6df9585ec7c8@linaro.org> To: Srinivas Kandagatla , Banajit Goswami , Andy Gross , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jaroslav Kysela , Takashi Iwai Cc: linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org, linux-sound@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Neil Armstrong X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=8596; i=neil.armstrong@linaro.org; h=from:subject:message-id; bh=6/YR1yQHLHY5ZVJGZrtvXeeiCTAJu1S+VdYzYnIkom0=; b=owEBbQKS/ZANAwAKAXfc29rIyEnRAcsmYgBlcZ45Ev+BPg8tYJo5qcDV3HxheuEqFEU6Xg4oaACv X/9AcxOJAjMEAAEKAB0WIQQ9U8YmyFYF/h30LIt33NvayMhJ0QUCZXGeOQAKCRB33NvayMhJ0ctND/ 0dm/j7qoBwB+cQmUOCjzPf1WhDY/Jjyn++p2Zp+aWSZr8oQ+MQu1XPmPXlqlnyBWHAFbdDPeUjY302 eEAPJhpENavqWY9cCxhGlSF5gx+zSvyyh7Dye4nvg/by8SNUH94ZQW1pf3HgqutvpSvPu+ufYJMbyi J5StbUGTGSjeBKTICg7aYELlR3qv4dnR67X+w6TLrXqXc6/iRzcqoIHD6GPGsUjy+pE4n6ZanVjOPv ZjijRDoMeImVTZAQIwszYMN+wHt0kBIjM4xRT6Mm0Dx/WP2LFH29n9xEfUpmI9l54zHbXsBkGN1KRL p42vAhN0odvDDqLLKfRkTAuM8EnJo3A2n+GEfcAp4Scu2Cj9C6lByZPIHAL0UDsNo8pFQhM7kd7Qo2 f8d/vf7VP+T/Ig8ow3Y4hrxAKPibVcSX5EangTiyXzdILC20Qt/8M3OnbbWKYBGKwW2GXnUM68Ct6g jxvfjixT7BU7wYMmdzxngI3bItmxqBUq8h88MYR01+KMTDfCABIJWhoqfXUaXQiGFZnQBeh1rA5YY4 NX0C4VsRgL2pqJ5ZxtqvU33rwvO4Wt167kSB97m4IXiiDwuOgwag7iR5uCKj6rxxuiTZ1trhUTd0RP uqmymJ1M/IplEFEvobzuU8Dt7fGM1J/ghfwOx5bLLu3FwtJyT1gB0M5dmygQ== X-Developer-Key: i=neil.armstrong@linaro.org; a=openpgp; fpr=89EC3D058446217450F22848169AB7B1A4CFF8AE When the WCD codec is connected behind an USB-C audio mux, plug/unplug events, clock control, pull-up and threshold are different. Add a typec_analog_mux config enabling those changes and add two callbacks to trigger plug/unplug events from USB-C events. Signed-off-by: Neil Armstrong --- sound/soc/codecs/wcd-mbhc-v2.c | 95 +++++++++++++++++++++++++++++++++++------- sound/soc/codecs/wcd-mbhc-v2.h | 3 ++ 2 files changed, 83 insertions(+), 15 deletions(-) diff --git a/sound/soc/codecs/wcd-mbhc-v2.c b/sound/soc/codecs/wcd-mbhc-v2.c index 5da1934527f3..0e6218ed0e5e 100644 --- a/sound/soc/codecs/wcd-mbhc-v2.c +++ b/sound/soc/codecs/wcd-mbhc-v2.c @@ -16,6 +16,7 @@ #define HS_DETECT_PLUG_TIME_MS (3 * 1000) #define MBHC_BUTTON_PRESS_THRESHOLD_MIN 250 #define GND_MIC_SWAP_THRESHOLD 4 +#define GND_MIC_USBC_SWAP_THRESHOLD 2 #define WCD_FAKE_REMOVAL_MIN_PERIOD_MS 100 #define HPHL_CROSS_CONN_THRESHOLD 100 #define HS_VREF_MIN_VAL 1400 @@ -52,12 +53,15 @@ struct wcd_mbhc { struct wcd_mbhc_field *fields; /* Delayed work to report long button press */ struct delayed_work mbhc_btn_dwork; + /* Work to handle plug report */ + struct work_struct mbhc_plug_detect_work; /* Work to correct accessory type */ struct work_struct correct_plug_swch; struct mutex lock; int buttons_pressed; u32 hph_status; /* track headhpone status */ u8 current_plug; + unsigned int swap_thr; bool is_btn_press; bool in_swch_irq_handler; bool hs_detect_work_stop; @@ -506,14 +510,13 @@ static void wcd_mbhc_adc_detect_plug_type(struct wcd_mbhc *mbhc) } } -static irqreturn_t wcd_mbhc_mech_plug_detect_irq(int irq, void *data) +static void mbhc_plug_detect_fn(struct work_struct *work) { - struct snd_soc_component *component; + struct wcd_mbhc *mbhc = container_of(work, struct wcd_mbhc, mbhc_plug_detect_work); + struct snd_soc_component *component = mbhc->component; enum snd_jack_types jack_type; - struct wcd_mbhc *mbhc = data; bool detection_type; - component = mbhc->component; mutex_lock(&mbhc->lock); mbhc->in_swch_irq_handler = true; @@ -576,9 +579,51 @@ static irqreturn_t wcd_mbhc_mech_plug_detect_irq(int irq, void *data) exit: mbhc->in_swch_irq_handler = false; mutex_unlock(&mbhc->lock); +} + +static irqreturn_t wcd_mbhc_mech_plug_detect_irq(int irq, void *data) +{ + struct wcd_mbhc *mbhc = data; + + if (!mbhc->cfg->typec_analog_mux) + schedule_work(&mbhc->mbhc_plug_detect_work); + return IRQ_HANDLED; } +int wcd_mbhc_typec_report_unplug(struct wcd_mbhc *mbhc) +{ + + if (!mbhc || !mbhc->cfg->typec_analog_mux) + return -EINVAL; + + if (mbhc->mbhc_cb->clk_setup) + mbhc->mbhc_cb->clk_setup(mbhc->component, false); + + wcd_mbhc_write_field(mbhc, WCD_MBHC_L_DET_EN, 0); + wcd_mbhc_write_field(mbhc, WCD_MBHC_MECH_DETECTION_TYPE, 0); + + schedule_work(&mbhc->mbhc_plug_detect_work); + + return 0; +} +EXPORT_SYMBOL_GPL(wcd_mbhc_typec_report_unplug); + +int wcd_mbhc_typec_report_plug(struct wcd_mbhc *mbhc) +{ + if (!mbhc || !mbhc->cfg->typec_analog_mux) + return -EINVAL; + + if (mbhc->mbhc_cb->clk_setup) + mbhc->mbhc_cb->clk_setup(mbhc->component, true); + wcd_mbhc_write_field(mbhc, WCD_MBHC_L_DET_EN, 1); + + schedule_work(&mbhc->mbhc_plug_detect_work); + + return 0; +} +EXPORT_SYMBOL_GPL(wcd_mbhc_typec_report_plug); + static int wcd_mbhc_get_button_mask(struct wcd_mbhc *mbhc) { int mask = 0; @@ -725,14 +770,23 @@ static int wcd_mbhc_initialise(struct wcd_mbhc *mbhc) mutex_lock(&mbhc->lock); - /* enable HS detection */ + if (mbhc->cfg->typec_analog_mux) + mbhc->swap_thr = GND_MIC_USBC_SWAP_THRESHOLD; + else + mbhc->swap_thr = GND_MIC_SWAP_THRESHOLD; + + /* setup HS detection */ if (mbhc->mbhc_cb->hph_pull_up_control_v2) mbhc->mbhc_cb->hph_pull_up_control_v2(component, - HS_PULLUP_I_DEFAULT); + mbhc->cfg->typec_analog_mux ? + HS_PULLUP_I_OFF : HS_PULLUP_I_DEFAULT); else if (mbhc->mbhc_cb->hph_pull_up_control) - mbhc->mbhc_cb->hph_pull_up_control(component, I_DEFAULT); + mbhc->mbhc_cb->hph_pull_up_control(component, + mbhc->cfg->typec_analog_mux ? + I_OFF : I_DEFAULT); else - wcd_mbhc_write_field(mbhc, WCD_MBHC_HS_L_DET_PULL_UP_CTRL, 3); + wcd_mbhc_write_field(mbhc, WCD_MBHC_HS_L_DET_PULL_UP_CTRL, + mbhc->cfg->typec_analog_mux ? 0 : 3); wcd_mbhc_write_field(mbhc, WCD_MBHC_HPHL_PLUG_TYPE, mbhc->cfg->hphl_swh); wcd_mbhc_write_field(mbhc, WCD_MBHC_GND_PLUG_TYPE, mbhc->cfg->gnd_swh); @@ -741,10 +795,18 @@ static int wcd_mbhc_initialise(struct wcd_mbhc *mbhc) mbhc->mbhc_cb->mbhc_gnd_det_ctrl(component, true); wcd_mbhc_write_field(mbhc, WCD_MBHC_HS_L_DET_PULL_UP_COMP_CTRL, 1); - wcd_mbhc_write_field(mbhc, WCD_MBHC_L_DET_EN, 1); + /* Plug detect is triggered manually if analog goes through USBCC */ + if (mbhc->cfg->typec_analog_mux) + wcd_mbhc_write_field(mbhc, WCD_MBHC_L_DET_EN, 0); + else + wcd_mbhc_write_field(mbhc, WCD_MBHC_L_DET_EN, 1); - /* Insertion debounce set to 96ms */ - wcd_mbhc_write_field(mbhc, WCD_MBHC_INSREM_DBNC, 6); + if (mbhc->cfg->typec_analog_mux) + /* Insertion debounce set to 48ms */ + wcd_mbhc_write_field(mbhc, WCD_MBHC_INSREM_DBNC, 4); + else + /* Insertion debounce set to 96ms */ + wcd_mbhc_write_field(mbhc, WCD_MBHC_INSREM_DBNC, 6); /* Button Debounce set to 16ms */ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_DBNC, 2); @@ -753,7 +815,8 @@ static int wcd_mbhc_initialise(struct wcd_mbhc *mbhc) mbhc->mbhc_cb->mbhc_bias(component, true); /* enable MBHC clock */ if (mbhc->mbhc_cb->clk_setup) - mbhc->mbhc_cb->clk_setup(component, true); + mbhc->mbhc_cb->clk_setup(component, + mbhc->cfg->typec_analog_mux ? false : true); /* program HS_VREF value */ wcd_program_hs_vref(mbhc); @@ -1115,7 +1178,7 @@ static void wcd_correct_swch_plug(struct work_struct *work) do { cross_conn = wcd_check_cross_conn(mbhc); try++; - } while (try < GND_MIC_SWAP_THRESHOLD); + } while (try < mbhc->swap_thr); if (cross_conn > 0) { plug_type = MBHC_PLUG_TYPE_GND_MIC_SWAP; @@ -1183,7 +1246,7 @@ static void wcd_correct_swch_plug(struct work_struct *work) cross_conn = wcd_check_cross_conn(mbhc); if (cross_conn > 0) { /* cross-connection */ pt_gnd_mic_swap_cnt++; - if (pt_gnd_mic_swap_cnt < GND_MIC_SWAP_THRESHOLD) + if (pt_gnd_mic_swap_cnt < mbhc->swap_thr) continue; else plug_type = MBHC_PLUG_TYPE_GND_MIC_SWAP; @@ -1194,7 +1257,7 @@ static void wcd_correct_swch_plug(struct work_struct *work) } else /* Error if (cross_conn < 0) */ continue; - if (pt_gnd_mic_swap_cnt == GND_MIC_SWAP_THRESHOLD) { + if (pt_gnd_mic_swap_cnt == mbhc->swap_thr) { /* US_EU gpio present, flip switch */ if (mbhc->cfg->swap_gnd_mic) { if (mbhc->cfg->swap_gnd_mic(component, true)) @@ -1473,6 +1536,7 @@ struct wcd_mbhc *wcd_mbhc_init(struct snd_soc_component *component, mutex_init(&mbhc->lock); INIT_WORK(&mbhc->correct_plug_swch, wcd_correct_swch_plug); + INIT_WORK(&mbhc->mbhc_plug_detect_work, mbhc_plug_detect_fn); ret = request_threaded_irq(mbhc->intr_ids->mbhc_sw_intr, NULL, wcd_mbhc_mech_plug_detect_irq, @@ -1562,6 +1626,7 @@ void wcd_mbhc_deinit(struct wcd_mbhc *mbhc) mutex_lock(&mbhc->lock); wcd_cancel_hs_detect_plug(mbhc, &mbhc->correct_plug_swch); + cancel_work_sync(&mbhc->mbhc_plug_detect_work); mutex_unlock(&mbhc->lock); kfree(mbhc); diff --git a/sound/soc/codecs/wcd-mbhc-v2.h b/sound/soc/codecs/wcd-mbhc-v2.h index 006118f3e81f..df68e99c81a3 100644 --- a/sound/soc/codecs/wcd-mbhc-v2.h +++ b/sound/soc/codecs/wcd-mbhc-v2.h @@ -193,6 +193,7 @@ struct wcd_mbhc_config { int v_hs_max; int num_btn; bool mono_stero_detection; + bool typec_analog_mux; bool (*swap_gnd_mic)(struct snd_soc_component *component, bool active); bool hs_ext_micbias; bool gnd_det_en; @@ -273,6 +274,8 @@ int wcd_mbhc_start(struct wcd_mbhc *mbhc, struct wcd_mbhc_config *mbhc_cfg, void wcd_mbhc_stop(struct wcd_mbhc *mbhc); void wcd_mbhc_set_hph_type(struct wcd_mbhc *mbhc, int hph_type); int wcd_mbhc_get_hph_type(struct wcd_mbhc *mbhc); +int wcd_mbhc_typec_report_plug(struct wcd_mbhc *mbhc); +int wcd_mbhc_typec_report_unplug(struct wcd_mbhc *mbhc); struct wcd_mbhc *wcd_mbhc_init(struct snd_soc_component *component, const struct wcd_mbhc_cb *mbhc_cb, const struct wcd_mbhc_intr *mbhc_cdc_intr_ids,