From: "Bruno Prémont" <bonbons@linux-vserver.org>
To: Jiri Kosina <jkosina@suse.cz>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
linux-input@vger.kernel.org, linux-usb@vger.kernel.org,
linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org,
"Rick L. Vinyard Jr." <rvinyard@cs.nmsu.edu>,
Nicu Pavel <npavel@ituner.com>, Oliver Neukum <oliver@neukum.org>,
Jaya Kumar <jayakumar.lkml@gmail.com>
Subject: [PATCH v6 8/8] hid: add PM support to PicoLCD device
Date: Tue, 30 Mar 2010 20:43:28 +0000 [thread overview]
Message-ID: <20100330224328.685f74ef@neptune.home> (raw)
In-Reply-To: <20100330223224.18fe4f3e@neptune.home>
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 Prémont <bonbons@linux-vserver.org>
---
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;
}
+#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 = 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 = picolcd_reset(hdev);
+ if (ret)
+ dbg_hid(PICOLCD_NAME " resetting our device failed: %d\n", ret);
+ ret = picolcd_fb_reset(hid_get_drvdata(hdev), 0);
+ if (ret)
+ dbg_hid(PICOLCD_NAME " restoring framebuffer content failed: %d\n", ret);
+ ret = picolcd_resume_lcd(hid_get_drvdata(hdev));
+ if (ret)
+ dbg_hid(PICOLCD_NAME " restoring lcd failed: %d\n", ret);
+ ret = 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 = {
.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)
--
1.6.4.4
next prev parent reply other threads:[~2010-03-30 20:43 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-24 22:37 [PATCH v3 0/6] hid: new driver for PicoLCD device Bruno Prémont
2010-03-24 22:49 ` [PATCH v3 2/6] hid: add framebuffer support to " Bruno Prémont
2010-03-27 0:22 ` [PATCH v4 " Bruno Prémont
2010-03-29 20:30 ` [PATCH v5 " Bruno Prémont
2010-03-24 22:51 ` [PATCH v3 3/6] hid: add backlight " Bruno Prémont
2010-03-24 22:54 ` [PATCH v3 4/6] hid: add lcd " Bruno Prémont
[not found] ` <20100324233707.7243b04d-hY15tx4IgV39zxVx7UNMDg@public.gmane.org>
2010-03-24 22:40 ` [PATCH v3 1/6] hid: new driver for " Bruno Prémont
2010-03-26 6:56 ` Dmitry Torokhov
2010-03-26 9:29 ` Bruno Prémont
2010-03-26 20:59 ` Jiri Kosina
2010-03-26 21:16 ` Dmitry Torokhov
2010-03-26 21:39 ` Bruno Prémont
2010-03-27 0:22 ` [PATCH v4 " Bruno Prémont
2010-03-29 9:47 ` Jiri Kosina
2010-03-29 10:16 ` Bruno Prémont
2010-03-30 8:12 ` Jiri Kosina
2010-03-30 20:32 ` [PATCH v6 0/8] " Bruno Prémont
2010-03-30 20:33 ` [PATCH v6 1/8] " Bruno Prémont
2010-04-01 16:58 ` Oliver Neukum
2010-04-25 19:29 ` [PATCH] hid: split picolcd's operation_mode sysfs attribute Bruno Prémont
2010-04-27 13:32 ` Jiri Kosina
2010-03-30 20:34 ` [PATCH v6 2/8] hid: add framebuffer support to PicoLCD device Bruno Prémont
[not found] ` <20100330223224.18fe4f3e-hY15tx4IgV39zxVx7UNMDg@public.gmane.org>
2010-03-30 20:35 ` [PATCH v6 3/8] hid: add backlight " Bruno Prémont
2010-03-30 20:36 ` [PATCH v6 4/8] hid: add lcd " Bruno Prémont
2010-03-30 20:36 ` [PATCH v6 5/8] hid: add GPO (leds) " Bruno Prémont
2010-03-30 20:38 ` [PATCH v6 6/8] hid: add experimental access to PicoLCD device's Bruno Prémont
2010-03-30 20:42 ` [PATCH v6 7/8, needs improvement] hid: add suspend/resume hooks for Bruno Prémont
2010-03-31 12:15 ` [PATCH v6 7/8, needs improvement] hid: add suspend/resume hooks Jiri Kosina
2010-03-30 20:43 ` Bruno Prémont [this message]
2010-03-31 9:28 ` [PATCH v6 0/8] hid: new driver for PicoLCD device Jiri Kosina
2010-03-24 22:55 ` [PATCH v3 5/6] hid: add GPO (leds) support to " Bruno Prémont
2010-03-24 22:58 ` [PATCH v3 6/6] hid: add experimental access to PicoLCD device's Bruno Prémont
2010-03-29 9:44 ` Jiri Kosina
[not found] ` <alpine.LNX.2.00.1003291142400.24576-ztGlSCb7Y1iN3ZZ/Hiejyg@public.gmane.org>
2010-03-29 20:34 ` [PATCH v4 " Bruno Prémont
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