Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757255Ab3GLHuO (ORCPT ); Fri, 12 Jul 2013 03:50:14 -0400 Received: from hqemgate04.nvidia.com ([216.228.121.35]:14696 "EHLO hqemgate04.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756798Ab3GLHuM (ORCPT ); Fri, 12 Jul 2013 03:50:12 -0400 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Fri, 12 Jul 2013 00:48:29 -0700 From: Wei Ni To: , , CC: , , , Wei Ni Subject: [PATCH v3 3/4] hwmon: (lm90) add support to handle IRQ Date: Fri, 12 Jul 2013 15:48:06 +0800 Message-ID: <1373615287-18502-4-git-send-email-wni@nvidia.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1373615287-18502-1-git-send-email-wni@nvidia.com> References: <1373615287-18502-1-git-send-email-wni@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1682 Lines: 65 When the temperature exceed the limit range value, the driver can handle the interrupt. Signed-off-by: Wei Ni --- drivers/hwmon/lm90.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index c90037f..1cc3d19 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -89,6 +89,7 @@ #include #include #include +#include /* * Addresses to scan @@ -1460,6 +1461,17 @@ static bool lm90_is_tripped(struct i2c_client *client) return true; } +static irqreturn_t lm90_irq_thread(int irq, void *dev_id) +{ + struct lm90_data *data = dev_id; + struct i2c_client *client = to_i2c_client(data->hwmon_dev->parent); + + if (lm90_is_tripped(client)) + return IRQ_HANDLED; + else + return IRQ_NONE; +} + static int lm90_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -1536,6 +1548,18 @@ static int lm90_probe(struct i2c_client *client, goto exit_remove_files; } + if (client->irq >= 0) { + dev_dbg(dev, "lm90 IRQ: %d\n", client->irq); + err = devm_request_threaded_irq(dev, client->irq, + NULL, lm90_irq_thread, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "lm90", data); + if (err < 0) { + dev_err(dev, "cannot request interrupt\n"); + goto exit_remove_files; + } + } + return 0; exit_remove_files: -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/