Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757252Ab0BXQCb (ORCPT ); Wed, 24 Feb 2010 11:02:31 -0500 Received: from legolas.restena.lu ([158.64.1.34]:43229 "EHLO legolas.restena.lu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757171Ab0BXQCZ convert rfc822-to-8bit (ORCPT ); Wed, 24 Feb 2010 11:02:25 -0500 Date: Wed, 24 Feb 2010 17:01:25 +0100 From: Bruno =?UTF-8?B?UHLDqW1vbnQ=?= To: Jiri Kosina Cc: linux-input@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, "Rick L. Vinyard Jr." , Nicu Pavel Subject: [PATCH 3/3] hid-picolcd: make use of new suspend/resume hooks Message-ID: <20100224170125.65f8bdfc@neptune.home> In-Reply-To: <20100224163101.3622d69f@neptune.home> References: <20100221002001.0a7e05a7@neptune.home> <20100224163101.3622d69f@neptune.home> X-Mailer: Claws Mail 3.7.5 (GTK+ 2.16.6; i686-pc-linux-gnu) References: <20100224170049.0d04af3c@neptune.home> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2359 Lines: 78 Make use of new suspend/resume hooks to disable backlight on suspend and restore backlight on simple resume or backlight, contrast and framebuffer content on reset-resume. Signed-off-by: Bruno Prémont Cc: Nicu Pavel --- drivers/hid/hid-picolcd.c | 45 +++ 1 files changed, 45 insertions(+), 0 deletions(-) diff --git a/drivers/hid/hid-picolcd.c b/drivers/hid/hid-picolcd.c index e69de29..90f6be5 100644 --- a/drivers/hid/hid-picolcd.c +++ b/drivers/hid/hid-picolcd.c @@ -833,6 +833,46 @@ }; +#ifdef CONFIG_PM +static int picolcd_suspend(struct hid_device *hdev) +{ + struct picolcd_data *data = hid_get_drvdata(hdev); + int bl_power = data->lcd_power; + + data->backlight->props.power = FB_BLANK_POWERDOWN; + picolcd_set_brightness(data->backlight); + data->lcd_power = data->backlight->props.power = bl_power; + dbg_hid(PICOLCD_NAME " device ready for suspend, lcd_power=%d\n", bl_power); + return 0; +} + +static int picolcd_resume(struct hid_device *hdev) +{ + struct picolcd_data *data = hid_get_drvdata(hdev); + int ret; + ret = picolcd_set_brightness(data->backlight); + if (ret) + dbg_hid(PICOLCD_NAME " restoring brightness failed: %d\n", ret); + ret = picolcd_set_contrast(data->lcd, data->lcd_contrast); + if (ret) + dbg_hid(PICOLCD_NAME " restoring contrast failed: %d\n", ret); + return 0; +} + +static int picolcd_reset_resume(struct hid_device *hdev) +{ + int ret; + ret = picolcd_reset(hdev); + if (ret) + dbg_hid(PICOLCD_NAME " resetting our device failed: %d\n", ret); + ret = picolcd_fb_reset(hdev, 0); + if (ret) + dbg_hid(PICOLCD_NAME " restoring framebuffer content failed: %d\n", ret); + return 0; +} +#endif + + static int picolcd_probe(struct hid_device *hdev, const struct hid_device_id *id) { @@ -1057,6 +1097,11 @@ .probe = picolcd_probe, .remove = picolcd_remove, .raw_event = picolcd_raw_event, +#ifdef CONFIG_PM + .suspend = picolcd_suspend, + .resume = picolcd_resume, + .reset_resume = picolcd_reset_resume, +#endif }; static int __init picolcd_init(void) -- 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/