From patchwork Wed Dec 13 21:48:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 753702 Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 95583DB; Wed, 13 Dec 2023 13:48:24 -0800 (PST) X-IronPort-AV: E=Sophos;i="6.04,273,1695654000"; d="scan'208";a="186385655" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 14 Dec 2023 06:48:24 +0900 Received: from localhost.localdomain (unknown [10.26.240.14]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 4A6B340BB731; Thu, 14 Dec 2023 06:48:21 +0900 (JST) From: Biju Das To: Dmitry Torokhov Cc: Biju Das , Support Opensource , linux-input@vger.kernel.org, Geert Uytterhoeven , Prabhakar Mahadev Lad , Biju Das , linux-renesas-soc@vger.kernel.org Subject: [PATCH v2 4/4] Input: da9063 - Add polling support Date: Wed, 13 Dec 2023 21:48:03 +0000 Message-Id: <20231213214803.9931-5-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231213214803.9931-1-biju.das.jz@bp.renesas.com> References: <20231213214803.9931-1-biju.das.jz@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On some platforms (eg: RZ/{G2UL,Five} SMARC EVK), there is no onkey IRQ populated by default. Add polling support. While at it, doing some cleanups in da9063_poll_on() as regmap_read() and dev_err() can fit in single line. Signed-off-by: Biju Das --- v1->v2: * Updated commit description * Fixed the logical mistake for optional IRQ handling. --- drivers/input/misc/da9063_onkey.c | 89 +++++++++++++++++++++++-------- 1 file changed, 66 insertions(+), 23 deletions(-) diff --git a/drivers/input/misc/da9063_onkey.c b/drivers/input/misc/da9063_onkey.c index b18232e91844..734cee9e9253 100644 --- a/drivers/input/misc/da9063_onkey.c +++ b/drivers/input/misc/da9063_onkey.c @@ -19,6 +19,8 @@ #include #include +#define DA9062_KEY_THRESHOLD_MSEC (200) + struct da906x_chip_config { /* REGS */ int onkey_status; @@ -42,6 +44,8 @@ struct da9063_onkey { const struct da906x_chip_config *config; char phys[32]; bool key_power; + unsigned int poll_interval; + unsigned int key_threshold_release_time; }; static const struct da906x_chip_config da9063_regs = { @@ -86,15 +90,27 @@ static void da9063_poll_on(struct work_struct *work) int error; /* Poll to see when the pin is released */ - error = regmap_read(onkey->regmap, - config->onkey_status, - &val); + error = regmap_read(onkey->regmap, config->onkey_status, &val); if (error) { - dev_err(onkey->dev, - "Failed to read ON status: %d\n", error); + dev_err(onkey->dev, "Failed to read ON status: %d\n", error); goto err_poll; } + if (onkey->poll_interval && + onkey->key_threshold_release_time <= DA9062_KEY_THRESHOLD_MSEC) { + /* detect short or long key press */ + if (!(val & config->onkey_nonkey_mask)) { + input_report_key(onkey->input, KEY_POWER, 0); + input_sync(onkey->input); + onkey->key_threshold_release_time = 0; + dev_dbg(onkey->dev, "KEY_POWER short press.\n"); + } else { + schedule_delayed_work(&onkey->work, msecs_to_jiffies(50)); + onkey->key_threshold_release_time += 50; + } + return; + } + if (!(val & config->onkey_nonkey_mask)) { error = regmap_update_bits(onkey->regmap, config->onkey_pwr_signalling, @@ -177,6 +193,21 @@ static irqreturn_t da9063_onkey_irq_handler(int irq, void *data) return IRQ_HANDLED; } +static void da9063_onkey_polled_poll(struct input_dev *input) +{ + struct da9063_onkey *onkey = input_get_drvdata(input); + const struct da906x_chip_config *config = onkey->config; + unsigned int val; + int error; + + error = regmap_read(onkey->regmap, config->onkey_status, &val); + if (onkey->key_power && !error && (val & config->onkey_nonkey_mask)) { + input_report_key(onkey->input, KEY_POWER, 1); + input_sync(onkey->input); + schedule_delayed_work(&onkey->work, 0); + } +} + static int da9063_onkey_probe(struct platform_device *pdev) { struct da9063_onkey *onkey; @@ -219,25 +250,37 @@ static int da9063_onkey_probe(struct platform_device *pdev) if (error) return error; - irq = platform_get_irq_byname(pdev, "ONKEY"); - if (irq < 0) + irq = platform_get_irq_byname_optional(pdev, "ONKEY"); + if (irq >= 0) { + error = devm_request_threaded_irq(&pdev->dev, irq, + NULL, da9063_onkey_irq_handler, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "ONKEY", onkey); + if (error) + return dev_err_probe(&pdev->dev, error, + "Failed to allocate onkey irq\n"); + + error = dev_pm_set_wake_irq(&pdev->dev, irq); + if (error) + dev_warn(&pdev->dev, + "Failed to set IRQ %d as a wake IRQ: %d\n", + irq, error); + else + device_init_wakeup(&pdev->dev, true); + } else if (irq != -ENXIO) { return irq; - - error = devm_request_threaded_irq(&pdev->dev, irq, - NULL, da9063_onkey_irq_handler, - IRQF_TRIGGER_LOW | IRQF_ONESHOT, - "ONKEY", onkey); - if (error) - return dev_err_probe(&pdev->dev, error, - "Failed to allocate onkey IRQ\n"); - - error = dev_pm_set_wake_irq(&pdev->dev, irq); - if (error) - dev_warn(&pdev->dev, - "Failed to set IRQ %d as a wake IRQ: %d\n", - irq, error); - else - device_init_wakeup(&pdev->dev, true); + } else { + input_set_drvdata(onkey->input, onkey); + device_property_read_u32(&pdev->dev, "poll-interval", + &onkey->poll_interval); + error = input_setup_polling(onkey->input, + da9063_onkey_polled_poll); + if (error) + return dev_err_probe(&pdev->dev, error, + "unable to set up polling\n"); + + input_set_poll_interval(onkey->input, onkey->poll_interval); + } return input_register_device(onkey->input); }