Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932142Ab3HGGSe (ORCPT ); Wed, 7 Aug 2013 02:18:34 -0400 Received: from hqemgate14.nvidia.com ([216.228.121.143]:17557 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932088Ab3HGGSb (ORCPT ); Wed, 7 Aug 2013 02:18:31 -0400 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Tue, 06 Aug 2013 23:18:30 -0700 From: Wei Ni To: CC: , , , , Wei Ni Subject: [PATCH v4 2/3] hwmon: (lm90) add support to handle IRQ Date: Wed, 7 Aug 2013 14:18:25 +0800 Message-ID: <1375856306-14415-3-git-send-email-wni@nvidia.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1375856306-14415-1-git-send-email-wni@nvidia.com> References: <1375856306-14415-1-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: 1617 Lines: 64 When the temperature exceed the limit range value, the driver can handle the interrupt. Signed-off-by: Wei Ni --- drivers/hwmon/lm90.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index 1da2eff..2e68773 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -89,6 +89,7 @@ #include #include #include +#include /* * Addresses to scan @@ -1433,6 +1434,16 @@ static bool lm90_is_tripped(struct i2c_client *client) return true; } +static irqreturn_t lm90_irq_thread(int irq, void *dev_id) +{ + struct i2c_client *client = dev_id; + + 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) { @@ -1509,6 +1520,18 @@ static int lm90_probe(struct i2c_client *client, goto exit_remove_files; } + if (client->irq) { + dev_dbg(dev, "IRQ: %d\n", client->irq); + err = devm_request_threaded_irq(dev, client->irq, + NULL, lm90_irq_thread, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "lm90", client); + if (err < 0) { + dev_err(dev, "cannot request IRQ: %d\n", client->irq); + 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/