From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Tissoires Subject: [PATCH v4 8/8] Input: elan_i2c - add Host Notify support Date: Mon, 10 Oct 2016 18:42:35 +0200 Message-ID: <1476117755-8113-9-git-send-email-benjamin.tissoires@redhat.com> References: <1476117755-8113-1-git-send-email-benjamin.tissoires@redhat.com> Return-path: In-Reply-To: <1476117755-8113-1-git-send-email-benjamin.tissoires@redhat.com> Sender: linux-kernel-owner@vger.kernel.org To: Wolfram Sang , Dmitry Torokhov Cc: Jean Delvare , Jonathan Corbet , KT Liao , linux-i2c@vger.kernel.org, linux-input@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-input@vger.kernel.org The Thinkpad series 13 uses Host Notify to report the interrupt. Add elan_smb_alert() to handle those interrupts and disable the irq handling on this case. Signed-off-by: Benjamin Tissoires --- new in v4 (was submitted on linux-input with the .alert callback) --- drivers/input/mouse/elan_i2c_core.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c index 6f16eb4..4aaac5d 100644 --- a/drivers/input/mouse/elan_i2c_core.c +++ b/drivers/input/mouse/elan_i2c_core.c @@ -1040,6 +1040,21 @@ static int elan_probe(struct i2c_client *client, I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_I2C_BLOCK)) { transport_ops = &elan_smbus_ops; + + if (!irq) { + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_HOST_NOTIFY)) { + dev_err(dev, "no Host Notify support\n"); + return -ENODEV; + } + + irq = i2c_smbus_host_notify_to_irq(client); + if (irq < 0) { + dev_err(dev, + "Unable to request a Host Notify IRQ.\n"); + return irq; + } + } } else { dev_err(dev, "not a supported I2C/SMBus adapter\n"); return -EIO; -- 2.7.4