From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0F7F7C10F0E for ; Mon, 15 Apr 2019 19:46:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B5B8120848 for ; Mon, 15 Apr 2019 19:46:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="DYvRqM9L" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728739AbfDOTqw (ORCPT ); Mon, 15 Apr 2019 15:46:52 -0400 Received: from mail-it1-f195.google.com ([209.85.166.195]:55527 "EHLO mail-it1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728305AbfDOTqv (ORCPT ); Mon, 15 Apr 2019 15:46:51 -0400 Received: by mail-it1-f195.google.com with SMTP id y134so29115907itc.5 for ; Mon, 15 Apr 2019 12:46:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=oa6tOl+yIIn8z9EOJTmwo5V1wdhL5bBLV81wx2ATMBc=; b=DYvRqM9LS1rRE08r7P4uUFV7qOVe/ppaV8aUmAfSAADcXoOP39uDMmbXBLxJaMn4jv F5Ol/e7OFHAy7YJGyXgtzxOtsxzZgCMR9sG4A0ZC6w87n9mrWDXCzYLJv+Ig6pBe94mF ovLQffeotrzNgZos6SihhUjC00DSVWHy8wU3M= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=oa6tOl+yIIn8z9EOJTmwo5V1wdhL5bBLV81wx2ATMBc=; b=dw5ADQItjalRr18QhF5cLJbxUJkl/S9/pbtjWp/RPvR6QrANBE43Wj4PBrmYz2XZlX fyGx1L8RL05cbCY/O7Ezs+67vKxPk4fjl7mf9cw6plaSlFNAntc/srBSOKpMJJiusyEf 0lGI+Ac2JcifNOuuqohOzBUNFiG5inY329+6qJ8FxHV1iZI6Tx3qAuGpJxtmWEH+0D94 1MIZ3x2TMPcjTUhgeu7M8eNVjb0/+3q0raYDc8B8e9kLqAD5wQXIoW/wxqyk5m3Qpwvi 8quQ/nrbC8H4G3c+Tgjge4ZOJQ2O3/DSAb0zX730lucJZoi1pa/T8QFBt1aLhvOnGRUo /2aA== X-Gm-Message-State: APjAAAU+Lezi/m+SshuccgCOJXtAtIXqLOqdf3jQ1/I1S88Ff/XtPMyk 7nLTB1zOMTPNuArntK3ATNx7o12azgU= X-Google-Smtp-Source: APXvYqwPf6pixrYcnTum5hxVJlREKA0WOdHcUGarl5YM9gN4K7na2duirV7uW68bcCVmittKCkTY8g== X-Received: by 2002:a24:6252:: with SMTP id d79mr26139180itc.100.1555357610381; Mon, 15 Apr 2019 12:46:50 -0700 (PDT) Received: from localhost ([2620:15c:183:200:70a8:812a:cdeb:6e0]) by smtp.gmail.com with ESMTPSA id u66sm19298484ioe.74.2019.04.15.12.46.49 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 15 Apr 2019 12:46:49 -0700 (PDT) From: Fletcher Woodruff To: linux-kernel@vger.kernel.org Cc: Ben Zhang , Jaroslav Kysela , Liam Girdwood , Mark Brown , Oder Chiou , Takashi Iwai , alsa-devel@alsa-project.org, Fletcher Woodruff Subject: [PATCH v3 1/3] ASoC: rt5677: allow multiple interrupt sources Date: Mon, 15 Apr 2019 13:45:57 -0600 Message-Id: <20190415194557.9182-2-fletcherw@chromium.org> X-Mailer: git-send-email 2.21.0.392.gf8f6787159e-goog In-Reply-To: <20190415194557.9182-1-fletcherw@chromium.org> References: <20190405204257.87095-4-fletcherw@chromium.org> <20190415194557.9182-1-fletcherw@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ben Zhang This patch allows headphone plug detect and mic present detect to be enabled at the same time. This patch implements an irq_chip with irq_domain directly instead of using regmap-irq, so that interrupt source line polarities can be flipped to support irq sharing. This patch does not add polarity flipping support within regmap-irq because there is extra work that must be done within the irq handler to support hotword detection. On the Chromebook Pixel, the firmware will disconnect GPIO1 from the jack detection irq when a hotword is detected and trigger the interrupt handler. Inside the handler, we will need to detect this, report the hotword event, and re-connect GPIO1 to the jack detection irq. Signed-off-by: Ben Zhang Signed-off-by: Fletcher Woodruff --- sound/soc/codecs/rt5677.c | 257 ++++++++++++++++++++++++++++---------- sound/soc/codecs/rt5677.h | 14 ++- 2 files changed, 204 insertions(+), 67 deletions(-) diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c index 9b7a1833d3316c..ef50314ac61eb5 100644 --- a/sound/soc/codecs/rt5677.c +++ b/sound/soc/codecs/rt5677.c @@ -23,6 +23,10 @@ #include #include #include +#include +#include +#include +#include #include #include #include @@ -4620,7 +4624,6 @@ static void rt5677_gpio_config(struct rt5677_priv *rt5677, unsigned offset, static int rt5677_to_irq(struct gpio_chip *chip, unsigned offset) { struct rt5677_priv *rt5677 = gpiochip_get_data(chip); - struct regmap_irq_chip_data *data = rt5677->irq_data; int irq; if ((rt5677->pdata.jd1_gpio == 1 && offset == RT5677_GPIO1) || @@ -4646,7 +4649,7 @@ static int rt5677_to_irq(struct gpio_chip *chip, unsigned offset) return -ENXIO; } - return regmap_irq_get_virq(data, irq); + return irq_create_mapping(rt5677->domain, irq); } static const struct gpio_chip rt5677_template_chip = { @@ -4716,37 +4719,13 @@ static int rt5677_probe(struct snd_soc_component *component) snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF); - regmap_write(rt5677->regmap, RT5677_DIG_MISC, 0x0020); + regmap_update_bits(rt5677->regmap, RT5677_DIG_MISC, + ~RT5677_IRQ_DEBOUNCE_SEL_MASK, 0x0020); regmap_write(rt5677->regmap, RT5677_PWR_DSP2, 0x0c00); for (i = 0; i < RT5677_GPIO_NUM; i++) rt5677_gpio_config(rt5677, i, rt5677->pdata.gpio_config[i]); - if (rt5677->irq_data) { - regmap_update_bits(rt5677->regmap, RT5677_GPIO_CTRL1, 0x8000, - 0x8000); - regmap_update_bits(rt5677->regmap, RT5677_DIG_MISC, 0x0018, - 0x0008); - - if (rt5677->pdata.jd1_gpio) - regmap_update_bits(rt5677->regmap, RT5677_JD_CTRL1, - RT5677_SEL_GPIO_JD1_MASK, - rt5677->pdata.jd1_gpio << - RT5677_SEL_GPIO_JD1_SFT); - - if (rt5677->pdata.jd2_gpio) - regmap_update_bits(rt5677->regmap, RT5677_JD_CTRL1, - RT5677_SEL_GPIO_JD2_MASK, - rt5677->pdata.jd2_gpio << - RT5677_SEL_GPIO_JD2_SFT); - - if (rt5677->pdata.jd3_gpio) - regmap_update_bits(rt5677->regmap, RT5677_JD_CTRL1, - RT5677_SEL_GPIO_JD3_MASK, - rt5677->pdata.jd3_gpio << - RT5677_SEL_GPIO_JD3_SFT); - } - mutex_init(&rt5677->dsp_cmd_lock); mutex_init(&rt5677->dsp_pri_lock); @@ -5063,65 +5042,211 @@ static void rt5677_read_device_properties(struct rt5677_priv *rt5677, &rt5677->pdata.jd3_gpio); } -static struct regmap_irq rt5677_irqs[] = { +struct rt5677_irq_desc { + unsigned int enable_mask; + unsigned int status_mask; + unsigned int polarity_mask; +}; + +static const struct rt5677_irq_desc rt5677_irq_descs[] = { [RT5677_IRQ_JD1] = { - .reg_offset = 0, - .mask = RT5677_EN_IRQ_GPIO_JD1, + .enable_mask = RT5677_EN_IRQ_GPIO_JD1, + .status_mask = RT5677_STA_GPIO_JD1, + .polarity_mask = RT5677_INV_GPIO_JD1, }, [RT5677_IRQ_JD2] = { - .reg_offset = 0, - .mask = RT5677_EN_IRQ_GPIO_JD2, + .enable_mask = RT5677_EN_IRQ_GPIO_JD2, + .status_mask = RT5677_STA_GPIO_JD2, + .polarity_mask = RT5677_INV_GPIO_JD2, }, [RT5677_IRQ_JD3] = { - .reg_offset = 0, - .mask = RT5677_EN_IRQ_GPIO_JD3, + .enable_mask = RT5677_EN_IRQ_GPIO_JD3, + .status_mask = RT5677_STA_GPIO_JD3, + .polarity_mask = RT5677_INV_GPIO_JD3, }, }; -static struct regmap_irq_chip rt5677_irq_chip = { - .name = "rt5677", - .irqs = rt5677_irqs, - .num_irqs = ARRAY_SIZE(rt5677_irqs), - - .num_regs = 1, - .status_base = RT5677_IRQ_CTRL1, - .mask_base = RT5677_IRQ_CTRL1, - .mask_invert = 1, -}; - -static int rt5677_init_irq(struct i2c_client *i2c) +static irqreturn_t rt5677_irq(int unused, void *data) { - int ret; + struct i2c_client *i2c = data; struct rt5677_priv *rt5677 = i2c_get_clientdata(i2c); + int ret = 0, i, reg_irq, virq; + bool irq_fired; - if (!rt5677->pdata.jd1_gpio && - !rt5677->pdata.jd2_gpio && - !rt5677->pdata.jd3_gpio) - return 0; - - if (!i2c->irq) { - dev_err(&i2c->dev, "No interrupt specified\n"); - return -EINVAL; + mutex_lock(&rt5677->irq_lock); + /* Read interrupt status */ + ret = regmap_read(rt5677->regmap, RT5677_IRQ_CTRL1, ®_irq); + if (ret) { + dev_err(&i2c->dev, + "Failed to read IRQ status: %d\n", + ret); + goto exit; + } + /* + * Clear the interrupt by flipping the polarity of the + * interrupt source lines that just fired + */ + irq_fired = false; + for (i = 0; i < RT5677_IRQ_NUM; i++) { + if (reg_irq & rt5677_irq_descs[i].status_mask) { + reg_irq ^= rt5677_irq_descs[i].polarity_mask; + irq_fired = true; + } } + if (!irq_fired) + goto exit; - ret = regmap_add_irq_chip(rt5677->regmap, i2c->irq, - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, 0, - &rt5677_irq_chip, &rt5677->irq_data); + ret = regmap_write(rt5677->regmap, RT5677_IRQ_CTRL1, reg_irq); + if (ret) { + dev_err(&i2c->dev, + "Failed to update IRQ status: %d\n", + ret); + goto exit; + } - if (ret != 0) { - dev_err(&i2c->dev, "Failed to register IRQ chip: %d\n", ret); - return ret; + /* Process interrupts */ + for (i = 0; i < RT5677_IRQ_NUM; i++) { + if ((reg_irq & rt5677_irq_descs[i].enable_mask) && + (reg_irq & rt5677_irq_descs[i].status_mask)) { + virq = irq_find_mapping(rt5677->domain, i); + if (virq) + handle_nested_irq(virq); + } } +exit: + mutex_unlock(&rt5677->irq_lock); + return IRQ_HANDLED; +} + +static void rt5677_irq_work(struct work_struct *work) +{ + struct rt5677_priv *rt5677 = + container_of(work, struct rt5677_priv, irq_work.work); + + rt5677_irq(0, rt5677); +} + +static void rt5677_irq_bus_lock(struct irq_data *data) +{ + struct rt5677_priv *rt5677 = irq_data_get_irq_chip_data(data); + + mutex_lock(&rt5677->irq_lock); +} + +static void rt5677_irq_bus_sync_unlock(struct irq_data *data) +{ + struct rt5677_priv *rt5677 = irq_data_get_irq_chip_data(data); + regmap_update_bits(rt5677->regmap, RT5677_IRQ_CTRL1, + RT5677_EN_IRQ_GPIO_JD1 | RT5677_EN_IRQ_GPIO_JD2 | + RT5677_EN_IRQ_GPIO_JD3, rt5677->irq_en); + mutex_unlock(&rt5677->irq_lock); +} + +static void rt5677_irq_enable(struct irq_data *data) +{ + struct rt5677_priv *rt5677 = irq_data_get_irq_chip_data(data); + + rt5677->irq_en |= rt5677_irq_descs[data->hwirq].enable_mask; +} + +static void rt5677_irq_disable(struct irq_data *data) +{ + struct rt5677_priv *rt5677 = irq_data_get_irq_chip_data(data); + + rt5677->irq_en &= ~rt5677_irq_descs[data->hwirq].enable_mask; +} + +static struct irq_chip rt5677_irq_chip = { + .name = "rt5677_irq_chip", + .irq_bus_lock = rt5677_irq_bus_lock, + .irq_bus_sync_unlock = rt5677_irq_bus_sync_unlock, + .irq_disable = rt5677_irq_disable, + .irq_enable = rt5677_irq_enable, +}; + +static int rt5677_irq_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw) +{ + struct rt5677_priv *rt5677 = h->host_data; + + irq_set_chip_data(virq, rt5677); + irq_set_chip(virq, &rt5677_irq_chip); + irq_set_nested_thread(virq, 1); + irq_set_noprobe(virq); return 0; } -static void rt5677_free_irq(struct i2c_client *i2c) + +static const struct irq_domain_ops rt5677_domain_ops = { + .map = rt5677_irq_map, + .xlate = irq_domain_xlate_twocell, +}; + +static void rt5677_init_irq(struct i2c_client *i2c) +{ + struct rt5677_priv *rt5677 = i2c_get_clientdata(i2c); + int ret; + unsigned int jd_mask = 0, jd_val = 0; + + /* No irq has been assigned to the codec */ + if (!i2c->irq) + return; + + mutex_init(&rt5677->irq_lock); + INIT_DELAYED_WORK(&rt5677->irq_work, rt5677_irq_work); + + /* + * Select RC as the debounce clock so that GPIO works even when + * MCLK is gated which happens when there is no audio stream + * (SND_SOC_BIAS_OFF). + */ + regmap_update_bits(rt5677->regmap, RT5677_DIG_MISC, + RT5677_IRQ_DEBOUNCE_SEL_MASK, + RT5677_IRQ_DEBOUNCE_SEL_RC); + /* Enable auto power on RC when GPIO states are changed */ + regmap_update_bits(rt5677->regmap, RT5677_GEN_CTRL1, 0xff, 0xff); + + /* Select and enable jack detection sources per platform data */ + if (rt5677->pdata.jd1_gpio) { + jd_mask |= RT5677_SEL_GPIO_JD1_MASK; + jd_val |= rt5677->pdata.jd1_gpio << RT5677_SEL_GPIO_JD1_SFT; + } + if (rt5677->pdata.jd2_gpio) { + jd_mask |= RT5677_SEL_GPIO_JD2_MASK; + jd_val |= rt5677->pdata.jd2_gpio << RT5677_SEL_GPIO_JD2_SFT; + } + if (rt5677->pdata.jd3_gpio) { + jd_mask |= RT5677_SEL_GPIO_JD3_MASK; + jd_val |= rt5677->pdata.jd3_gpio << RT5677_SEL_GPIO_JD3_SFT; + } + regmap_update_bits(rt5677->regmap, RT5677_JD_CTRL1, jd_mask, jd_val); + + /* Set GPIO1 pin to be IRQ output */ + regmap_update_bits(rt5677->regmap, RT5677_GPIO_CTRL1, + RT5677_GPIO1_PIN_MASK, RT5677_GPIO1_PIN_IRQ); + + /* Ready to listen for interrupts */ + rt5677->domain = irq_domain_add_linear(i2c->dev.of_node, + RT5677_IRQ_NUM, &rt5677_domain_ops, rt5677); + if (!rt5677->domain) { + dev_err(&i2c->dev, "Failed to create IRQ domain\n"); + return; + } + ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL, rt5677_irq, + IRQF_TRIGGER_RISING | IRQF_ONESHOT, + "rt5677", i2c); + if (ret) { + dev_err(&i2c->dev, "Failed to request IRQ: %d\n", ret); + return; + } +} + +static void rt5677_irq_exit(struct i2c_client *i2c) { struct rt5677_priv *rt5677 = i2c_get_clientdata(i2c); - if (rt5677->irq_data) - regmap_del_irq_chip(i2c->irq, rt5677->irq_data); + cancel_delayed_work_sync(&rt5677->irq_work); } static int rt5677_i2c_probe(struct i2c_client *i2c) @@ -5259,7 +5384,7 @@ static int rt5677_i2c_probe(struct i2c_client *i2c) static int rt5677_i2c_remove(struct i2c_client *i2c) { - rt5677_free_irq(i2c); + rt5677_irq_exit(i2c); rt5677_free_gpio(i2c); return 0; diff --git a/sound/soc/codecs/rt5677.h b/sound/soc/codecs/rt5677.h index 183d92b030459f..9c73bea8635508 100644 --- a/sound/soc/codecs/rt5677.h +++ b/sound/soc/codecs/rt5677.h @@ -1636,6 +1636,12 @@ #define RT5677_GPIO6_P_NOR (0x0 << 0) #define RT5677_GPIO6_P_INV (0x1 << 0) +/* General Control (0xfa) */ +#define RT5677_IRQ_DEBOUNCE_SEL_MASK (0x3 << 3) +#define RT5677_IRQ_DEBOUNCE_SEL_MCLK (0x0 << 3) +#define RT5677_IRQ_DEBOUNCE_SEL_RC (0x1 << 3) +#define RT5677_IRQ_DEBOUNCE_SEL_SLIM (0x2 << 3) + /* Virtual DSP Mixer Control (0xf7 0xf8 0xf9) */ #define RT5677_DSP_IB_01_H (0x1 << 15) #define RT5677_DSP_IB_01_H_SFT 15 @@ -1713,6 +1719,7 @@ enum { RT5677_IRQ_JD1, RT5677_IRQ_JD2, RT5677_IRQ_JD3, + RT5677_IRQ_NUM, }; enum rt5677_type { @@ -1811,9 +1818,14 @@ struct rt5677_priv { struct gpio_chip gpio_chip; #endif bool dsp_vad_en; - struct regmap_irq_chip_data *irq_data; bool is_dsp_mode; bool is_vref_slow; + + /* Interrupt handling */ + struct irq_domain *domain; + struct mutex irq_lock; + unsigned int irq_en; + struct delayed_work irq_work; }; int rt5677_sel_asrc_clk_src(struct snd_soc_component *component, -- 2.21.0.392.gf8f6787159e-goog