From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bruno =?UTF-8?B?UHLDqW1vbnQ=?= Date: Tue, 30 Mar 2010 20:43:28 +0000 Subject: [PATCH v6 8/8] hid: add PM support to PicoLCD device Message-Id: <20100330224328.685f74ef@neptune.home> List-Id: References: <20100324233707.7243b04d@neptune.home> <20100324234022.0361bd80@neptune.home> <20100326065656.GC26602@core.coreip.homeip.net> <20100326102951.3b9ecda1@neptune.home> <20100327012245.0ace6a09@neptune.home> <20100329121611.0c22dcaf@pluto.restena.lu> <20100330223224.18fe4f3e@neptune.home> In-Reply-To: <20100330223224.18fe4f3e@neptune.home> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: Jiri Kosina Cc: Dmitry Torokhov , linux-input@vger.kernel.org, linux-usb@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, "Rick L. Vinyard Jr." , Nicu Pavel , Oliver Neukum , Jaya Kumar Add PM support in order to turn off backlight on suspend, restore it on resume and especially restore complete state on reset-resume. Signed-off-by: Bruno Pr=C3=A9mont --- drivers/hid/hid-picolcd.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 42 insertions(+), 0 deletions(-) diff --git a/drivers/hid/hid-picolcd.c b/drivers/hid/hid-picolcd.c index fe1f772..daa7c5d 100644 --- a/drivers/hid/hid-picolcd.c +++ b/drivers/hid/hid-picolcd.c @@ -2255,6 +2255,43 @@ static int picolcd_raw_event(struct hid_device *hdev, return 1; } =20 +#ifdef CONFIG_PM +static int picolcd_suspend(struct hid_device *hdev) +{ + picolcd_suspend_backlight(hid_get_drvdata(hdev)); + dbg_hid(PICOLCD_NAME " device ready for suspend\n"); + return 0; +} + +static int picolcd_resume(struct hid_device *hdev) +{ + int ret; + ret =3D picolcd_resume_backlight(hid_get_drvdata(hdev)); + if (ret) + dbg_hid(PICOLCD_NAME " restoring backlight failed: %d\n", ret); + return 0; +} + +static int picolcd_reset_resume(struct hid_device *hdev) +{ + int ret; + ret =3D picolcd_reset(hdev); + if (ret) + dbg_hid(PICOLCD_NAME " resetting our device failed: %d\n", ret); + ret =3D picolcd_fb_reset(hid_get_drvdata(hdev), 0); + if (ret) + dbg_hid(PICOLCD_NAME " restoring framebuffer content failed: %d\n", ret); + ret =3D picolcd_resume_lcd(hid_get_drvdata(hdev)); + if (ret) + dbg_hid(PICOLCD_NAME " restoring lcd failed: %d\n", ret); + ret =3D picolcd_resume_backlight(hid_get_drvdata(hdev)); + if (ret) + dbg_hid(PICOLCD_NAME " restoring backlight failed: %d\n", ret); + picolcd_leds_set(hid_get_drvdata(hdev)); + return 0; +} +#endif + /* initialize keypad input device */ static int picolcd_init_keys(struct picolcd_data *data, struct hid_report *report) @@ -2530,6 +2567,11 @@ static struct hid_driver picolcd_driver =3D { .probe =3D picolcd_probe, .remove =3D picolcd_remove, .raw_event =3D picolcd_raw_event, +#ifdef CONFIG_PM + .suspend =3D picolcd_suspend, + .resume =3D picolcd_resume, + .reset_resume =3D picolcd_reset_resume, +#endif }; =20 static int __init picolcd_init(void) --=20 1.6.4.4