[Q] GTP31xx charging issues
(Samsung GT-P3110 Galaxy Tab 2 7.0")
Recently the tab stopped charging while plugged to AC and in use...
Ok, it's not losing power as fast as when unplugged, but almost!
I have to turn it off and AC charge for hours and hours as the phone seem to think that it's connected to a PC all of a sudden!
Wasn't an issue up until last week then for no apparent reason it says "not charging" in Battery..
After a lot of reading around and confirming that it was not the charger or cable i dug deeper and it seems that USB charging is turned of by default on the Tab 2's except all custom kernels have it turned on and now that's always on!
Since the tab wont change charger state from USB to AC then all I'm getting is a slow trickle charge at the same slow pace, and it don't whether I am plugged in to the AC or into the PC!
So i figured hey, it's just a terminal command to force it to switch and that's when i realized that, no it's not that easy!
As USB charge is not only the default setting in custom kernels, its the ONLY option available!
The ability to have the tab swiftly reach a full charge while in use seems to currently be impossible with custom kernels it seems!
Is there a work around, or have everyone been to busy implementing USB charging to remember that sometimes you don't want to spend 8+ hours with tab turned off to get a full charge?
Below is a logcat from connecting and disconnecting charger cable to my GTP3110 WHILE connected to an AC adapter!
Android Tuner (logcat)
V/ 96.627105 c1 17 usb ta_nconnected_irq : VBUS ON
V/ 96.627899 c1 17 [BAT_MANAGER] Charger Connected
V/ 96.627960 c1 58 musb-hdrc musb-hdrc: USB/TA Connect
V/ 97.256317 c1 1662 check_charger_type : Charger type is [USB], adc=594
V/ 97.256317 c1 1662 charger_detect_work: cable flag : 1, cable_type : 1
V/ 97.256347 c1 1662 smb136-charger 5-004d: smb136_set_charging_state: set charger current USB & Default
V/ 97.262725 c1 1662 cable detect:USB attach, current device = 0x0080
V/ 97.262756 c1 1662 espresso_con_usb_charger_attached, USB_EVENT_VBUS
V/ 97.262756 c1 1662 otg: otgwl_hold
V/ 97.262847 c0 58 musb-hdrc musb-hdrc: VBUS Connect
V/ 97.262908 c0 58 musb-omap2430 musb-omap2430: runtime resume
V/ 97.263061 c0 58 omap4430_phy_set_clk: clock (0 --> 1)
V/ 97.504699 c0 58 omap4430_phy_power : clock 1, power ON
W/ 103.476745 c0 15 smb136-charger 5-004d: smb136_i2c_read: err -6
W/ 103.476806 c0 15 smb136-charger 5-004d: smb136_read_status : I2C read fail addr: 0x35
V/ 103.535827 c0 15 smb136-charger 5-004d: addr : 0x35, data : 0x40, addr : 0x36, data : 0x31
V/ 103.806243 c1 17 usb ta_nconnected_irq : VBUS OFF
V/ 103.806793 c1 17 otg: otgwl_temporary_hold
V/ 103.806793 c0 78 musb-hdrc musb-hdrc: VBUS Disconnect
V/ 103.806793 c1 17 [BAT_MANAGER] Charger Disconnect
V/ 103.806823 c0 78 omap4430_phy is : ON
V/ 103.806854 c0 78 omap4430_phy_power : clock 1, power OFF
V/ 103.806854 c1 1662 charger_detect_work: cable flag : 0, cable_type : 0
V/ 103.806854 c1 1662 smb136-charger 5-004d: smb136_set_charging_state: Set discharging default
V/ 103.806884 c0 78 musb-hdrc musb-hdrc: ID float
V/ 103.806884 c0 605 android_work: did not send uevent (0 0 (null))
V/ 103.806915 c0 605 otg espresso_otg_work(920)
current device 0080
V/ 103.806915 c0 605 otg current device is not USB Host.
V/ 103.812805 c1 1662 cable detect:USB detach, current device = 0x0000
V/ 104.002899 c0 658 musb-omap2430 musb-omap2430: runtime suspend
V/ 104.002899 c0 658 omap4430_phy_set_clk: clock (1 --> 0)