Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753372Ab0LCPhZ (ORCPT ); Fri, 3 Dec 2010 10:37:25 -0500 Received: from eu1sys200aog102.obsmtp.com ([207.126.144.113]:42731 "EHLO eu1sys200aog102.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751289Ab0LCPhN (ORCPT ); Fri, 3 Dec 2010 10:37:13 -0500 From: Sundar Iyer To: , , , Cc: , , Sundar Iyer Subject: [PATCH 13/20] mfd/tc3589x: add suspend/resume support Date: Fri, 3 Dec 2010 20:35:46 +0530 Message-ID: <1291388753-14662-14-git-send-email-sundar.iyer@stericsson.com> X-Mailer: git-send-email 1.7.2.dirty In-Reply-To: <1291388753-14662-1-git-send-email-sundar.iyer@stericsson.com> References: <1291388753-14662-1-git-send-email-sundar.iyer@stericsson.com> 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: 2216 Lines: 80 Signed-off-by: Sundar Iyer --- drivers/mfd/tc3589x.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 42 insertions(+), 0 deletions(-) diff --git a/drivers/mfd/tc3589x.c b/drivers/mfd/tc3589x.c index fd206fd..a7dd2b6 100644 --- a/drivers/mfd/tc3589x.c +++ b/drivers/mfd/tc3589x.c @@ -14,6 +14,9 @@ #include #include +#define TC3589x_CLKMODE_MODCTL_SLEEP 0x0 +#define TC3589x_CLKMODE_MODCTL_OPERATION (1 << 0) + /** * tc3589x_reg_read() - read a single TC3589x register * @tc3589x: Device to read from @@ -365,6 +368,42 @@ static int __devexit tc3589x_remove(struct i2c_client *client) return 0; } +#ifdef CONFIG_PM +static int tc3589x_suspend(struct device *dev) +{ + struct tc3589x *tc35892 = dev_get_drvdata(dev); + struct i2c_client *client = tc3589x->i2c; + int ret = 0; + + /* put the system to sleep mode */ + if (!device_may_wakeup(&client->dev)) + ret = tc3589x_reg_write(tc3589x, TC3589x_CLKMODE, + TC3589x_CLKMODE_MODCTL_SLEEP); + + return ret; +} + +static int tc3589x_resume(struct device *dev) +{ + struct tc3589x *tc3589x = dev_get_drvdata(dev); + struct i2c_client *client = tc3589x->i2c; + int ret = 0; + + /* enable the system into operation */ + if (!device_may_wakeup(&client->dev)) + ret = tc3589x_reg_write(tc3589x, TC3589x_CLKMODE, + TC3589x_CLKMODE_MODCTL_OPERATION); + + return ret; +} + + +static const struct dev_pm_ops tc3589x_dev_pm_ops = { + .suspend = tc3589x_suspend, + .resume = tc3589x_resume, +}; +#endif + static const struct i2c_device_id tc3589x_id[] = { { "tc3589x", 24 }, { } @@ -374,6 +413,9 @@ MODULE_DEVICE_TABLE(i2c, tc3589x_id); static struct i2c_driver tc3589x_driver = { .driver.name = "tc3589x", .driver.owner = THIS_MODULE, +#ifdef CONFIG_PM + .driver.pm = &tc3589x_dev_pm_ops, +#endif .probe = tc3589x_probe, .remove = __devexit_p(tc3589x_remove), .id_table = tc3589x_id, -- 1.7.2.dirty -- 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/