30. accdet调试日志

一、常用调试方法：
	1. adb
	
	DCC模式：查看中断计数
		magc6737t_65_n:/ $ cat /proc/interrupts | grep "pmic"
		494:          6   mt-eint 206  pmic-eint
		magc6737t_65_n:/ $ cat /proc/interrupts | grep "pmic"
		494:          7   mt-eint 206  pmic-eint				// 耳机拔出触发1次pmic中断
		magc6737t_65_n:/ $ cat /proc/interrupts | grep "pmic"
		494:          9   mt-eint 206  pmic-eint				// 耳机插入触发2次pmic中断

		magc6737t_65_n:/ $ cat /proc/interrupts | grep "pmic"
		494:         10   mt-eint 206  pmic-eint
		magc6737t_65_n:/ $ cat /proc/interrupts | grep "pmic"
		494:         12   mt-eint 206  pmic-eint				// 耳机按下音量+触发2次pmic中断
		magc6737t_65_n:/ $ cat /proc/interrupts | grep "pmic"
		494:         14   mt-eint 206  pmic-eint				// 耳机按下音量-触发2次pmic中断
		magc6737t_65_n:/ $ cat /proc/interrupts | grep "pmic"
		494:         16   mt-eint 206  pmic-eint				// 耳机按下暂停键触发2次pmic中断
	
	2. 查看log
	
	3. 
	4. 
	
	
	
二、根据mtk-online介绍，耳机检测有三种模式：
	Feature Phone主要有三种耳机检测方式：
	1. EINT+AuxADC
	   【检测原理】 
	（1）耳机检测方式为EINT+AuxADC。
	（2）EINT HISR为AUX_EINT_HISR，在aux_task_main中注册中断。插入耳机，若是高电平触发中断，需要保证AUX_EINT_STATE为1，否则为0。
	（3）hook key的检测采用ADC。当耳机plug in，trigger AUX_EINT_HISR，此时turn on micbias， double check plug in state后，再发送msg AUX_ID_EARPHONE给UEM。
		   然后turn off micbias。当aux收到来电消息，也会turn on micbias，检测SENDKEY ADC，直到挂断电话，才turn off micbias。
	   
	   【软件配置】ACCDET_SUPPORT=FALSE
	   【典型平台】MT6236,MT6252
	 
	2. ACCDET【即DCC模式】
	   【检测原理】  
	（1）耳机检测方式为ACCDET only。
	（2）HISR为ACCDET_HISR，在ACCDET_INIT注册。
	（3）hook key的检测采用ACCDET。
	（4）耳机状态与accdet处的电压对应关系如下表：
			   表（一）
		Earphone state		Accdet voltage	Comparator AB state
		Plug out			1.9V			A=1，B=1
		Plug in				0.4V~1.7V		A=0，B=1
		Hook key pressed	0V				A=0，B=0	//【可用万用表量mic脚电压，按键按住不松开即可】
		
		【软件配置】ACCDET_SUPPORT=TRUE
		【典型平台】MT6276,MT6250D/MT6250
	 
	3. EINT_ACCDET【即ACC模式】
		   【检测原理】
	（1）耳机检测方式为EINT+ACCDET。
	（2）EINT HISR为AUX_EINT2_HISR，在ACCDET_INIT注册。插入耳机，若是高电平触发中断，需要将AUX_EINT_STATE置为1，否则置为0。
	（3）hook key的检测采用accdet。
	（4）耳机状态与accdet处的电压对应关系同表(一)。
	（5）耳机插入，触发eint之后，enable ACCDET，耳机拔出之后会disable ACCDET。

		【软件配置】ACCDET_SUPPORT=EINT_ACCDET
		【典型平台】MT6255,MT6250/MT6250D
	
三、如何分辨是【ACC】还是【DCC】
	根据查看硬件原理图，对照BOM
	ACC: R11+R12
	DCC: R13
								VIO18_PMU
									|
	ACCDET -------R13(47K)---|		R11(470K)
							 |		|
	EINT_EAR -----R12(47K)-----------------HP_EINT
	
四、
ACC : 还需要而配置dws，dts中断脚accdet
	magc6737m_65_n_debug_defconfig:
		CONFIG_ACCDET_EINT=y
		# CONFIG_ACCDET_EINT_IRQ is not set

DCC : 无需而配置中断脚
	magc6737m_65_n_debug_defconfig:	
		# CONFIG_ACCDET_EINT is not set
		CONFIG_ACCDET_EINT_IRQ=y
	
	
	
	
	
		
二、全插入: 耳机+mic
插入log: 
// 第一次中断
[ 1294.690140] -(2)[0:swapper/2][name:irq_mt_eic&]EINT Module - expires:4295066764, jiffies:4295066763, deb_in_jiffies:1, 
[ 1294.690180] -(2)[0:swapper/2][name:irq_mt_eic&]deb:1000, in mt_eint_set_timer_event
[ 1294.697499]  (1)[54:pmic_thread][name:pmic&][PMIC] [PMIC_INT] addr[0x2c4]=0x2000
[ 1294.697542]  (1)[54:pmic_thread][name:accdet&][accdet_eint_int_handler]....
[ 1294.697581]  (1)[54:pmic_thread][name:accdet&][Accdet accdet_irq_handler]clear_accdet_eint_interrupt: ACCDET_IRQ_STS = 0x4
[ 1294.697663]  (1)[54:pmic_thread][name:accdet&][Accdet]clear_accdet_eint_interrupt: ACCDET_IRQ_STS = 0x8404
[ 1294.697726]  (1)[54:pmic_thread][name:accdet&][Accdet]Enter accdet_eint_func !!!!!!
[ 1294.697875]  (1)[54:pmic_thread][name:accdet&][Accdet]accdet_eint_func after cur_eint_state=1
[ 1294.698038]  (1)[54:pmic_thread][PWRAP] clear EINT flag mt_pmic_wrap_eint_status=0x0
[ 1294.699397]  (2)[113:kworker/u8:2][name:accdet&][Accdet]DCC EINT func :plug-in, cur_eint_state = 1
[ 1294.699453]  (2)[113:kworker/u8:2][name:accdet&][Accdet]accdet hardware init
[ 1294.699738]  (2)[113:kworker/u8:2][name:accdet&][Accdet]pin recog start!  micbias always on!
[ 1294.699778]  (2)[113:kworker/u8:2][name:accdet&]accdet: enable_accdet
// ???
[ 1294.727521]  (1)[6:kworker/u8:0][name:accdet&][Accdet]check_cable_type:Clear interrupt:Done[0x8000]!		// 奇怪
[ 1294.727566]  (1)[6:kworker/u8:0][name:accdet&][Accdet]cable type:[No_device], status switch:[Plug_out]->[Plug_out]
[ 1294.727597]  (1)[6:kworker/u8:0][name:accdet&] [accdet] set state in cable_type  status
[ 1294.727972]  (0)[57:cfinteractive][name:mt_cpufreq&][Power/cpufreq] @_mt_cpufreq_set_locked(): Vproc = 1025mv, freq = 793000 KHz
// 第二次中断
[ 1294.798382] -(2)[1200:system_server][name:irq_mt_eic&]EINT Module - expires:4295066775, jiffies:4295066774, deb_in_jiffies:1, 
[ 1294.798415] -(2)[1200:system_server][name:irq_mt_eic&]deb:1000, in mt_eint_set_timer_event
[ 1294.807368]  (1)[54:pmic_thread][name:pmic&][PMIC] [PMIC_INT] addr[0x2c4]=0x2000
[ 1294.807407]  (1)[54:pmic_thread][name:accdet&][accdet_eint_int_handler]....
[ 1294.807441]  (1)[54:pmic_thread][name:accdet&][Accdet accdet_irq_handler]clear_accdet_eint_interrupt: ACCDET_IRQ_STS = 0x8004
[ 1294.807510]  (1)[54:pmic_thread][name:accdet&][Accdet]clear_accdet_eint_interrupt: ACCDET_IRQ_STS = 0x404
[ 1294.807586]  (1)[54:pmic_thread][name:accdet&][Accdet]Enter accdet_eint_func !!!!!!
[ 1294.807637]  (1)[54:pmic_thread][name:accdet&][Accdet]accdet_eint_func after cur_eint_state=0
[ 1294.807757]  (1)[54:pmic_thread][PWRAP] clear EINT flag mt_pmic_wrap_eint_status=0x0
[ 1294.807794]  (0)[6:kworker/u8:0][name:accdet&][Accdet]DCC EINT func :plug-out, cur_eint_state = 0
[ 1294.807881]  (0)[6:kworker/u8:0][name:accdet&][Accdet]clear_accdet_interrupt: ACCDET_IRQ_STS = 0x100
[ 1294.808125]  (0)[6:kworker/u8:0][name:accdet&]accdet: disable_accdet
[ 1294.808171]  (0)[6:kworker/u8:0][name:accdet&] [accdet] set state in cable_type = NO_DEVICE
// 第三次中断
[ 1295.058332] -(1)[216:logd.writer][name:irq_mt_eic&]EINT Module - expires:4295066801, jiffies:4295066800, deb_in_jiffies:1, 
[ 1295.058379] -(1)[216:logd.writer][name:irq_mt_eic&]deb:1000, in mt_eint_set_timer_event
[ 1295.067560]  (1)[54:pmic_thread][name:pmic&][PMIC] [PMIC_INT] addr[0x2c4]=0x2000
[ 1295.067609]  (1)[54:pmic_thread][name:accdet&][accdet_eint_int_handler]....
[ 1295.067655]  (1)[54:pmic_thread][name:accdet&][Accdet accdet_irq_handler]clear_accdet_eint_interrupt: ACCDET_IRQ_STS = 0x4
[ 1295.067744]  (1)[54:pmic_thread][name:accdet&][Accdet]clear_accdet_eint_interrupt: ACCDET_IRQ_STS = 0x8404
[ 1295.067814]  (1)[54:pmic_thread][name:accdet&][Accdet]Enter accdet_eint_func !!!!!!
[ 1295.067883]  (1)[54:pmic_thread][name:accdet&][Accdet]accdet_eint_func after cur_eint_state=1
[ 1295.068084]  (1)[54:pmic_thread][PWRAP] clear EINT flag mt_pmic_wrap_eint_status=0x0
[ 1295.069433]  (2)[6:kworker/u8:0][name:accdet&][Accdet]DCC EINT func :plug-in, cur_eint_state = 1
[ 1295.069495]  (2)[6:kworker/u8:0][name:accdet&][Accdet]accdet hardware init
[ 1295.069771]  (2)[6:kworker/u8:0][name:accdet&][Accdet]pin recog start!  micbias always on!
[ 1295.069818]  (2)[6:kworker/u8:0][name:accdet&]accdet: enable_accdet
// 第四次中断
[ 1297.077836]  (0)[57:cfinteractive][name:mt_cpufreq&][Power/cpufreq] @_mt_cpufreq_set_locked(): Vproc = 1025mv, freq = 793000 KHz
[ 1297.085367] -(1)[4960:mobile_log_d.rd][name:irq_mt_eic&]EINT Module - expires:4295067003, jiffies:4295067002, deb_in_jiffies:1, 
[ 1297.085403] -(1)[4960:mobile_log_d.rd][name:irq_mt_eic&]deb:1000, in mt_eint_set_timer_event
[ 1297.085835]  (0)[1774:PhotonicModulat][name:leds&][LED]Set Backlight directly 203 at time 4295067002, mapping level is 203
[ 1297.085871]  (0)[1774:PhotonicModulat][name:ddp_aal&]disp_aal_notify_backlight_changed 810/1023 096.098, 818/1023 096.114, 814/1023 003.109
[ 1297.085898]  (0)[1774:PhotonicModulat][name:ddp_aal&][AAL] led_mode=5 , aal_need_lock=0
[ 1297.087737]  (0)[54:pmic_thread][name:pmic&][PMIC] [PMIC_INT] addr[0x2c4]=0x1000
[ 1297.087776]  (0)[54:pmic_thread][name:accdet&][accdet_int_handler]....
[ 1297.087809]  (0)[54:pmic_thread][name:accdet&][Accdet accdet_irq_handler]clear_accdet_eint_interrupt: ACCDET_IRQ_STS = 0x8001
[ 1297.087864]  (0)[54:pmic_thread][name:accdet&][Accdet]clear_accdet_interrupt: ACCDET_IRQ_STS = 0x8101
[ 1297.087965]  (0)[54:pmic_thread][PWRAP] clear EINT flag mt_pmic_wrap_eint_status=0x0
[ 1297.089208]  (0)[6:kworker/u8:0][name:accdet&][Accdet]accdet interrupt happen:[Plug_out]current AB = 1
[ 1297.089291]  (0)[6:kworker/u8:0][name:accdet&][Accdet]check_cable_type:Clear interrupt:Done[0x8000]!
[ 1297.089317]  (0)[6:kworker/u8:0][name:accdet&][Accdet]cable type:[Headset_mic], status switch:[Plug_out]->[Headset_plug_in]
[ 1297.089802]  (0)[6:kworker/u8:0][name:accdet&] [accdet] set state in cable_type  status
[ 1297.097813]  (1)[57:cfinteractive][name:mt_cpufreq&][Power/cpufreq] @_mt_cpufreq_set_locked(): Vproc = 1218mv, freq = 1248000 KHz


拔出log
[ 1086.569977] -(0)[4960:mobile_log_d.rd][name:irq_mt_eic&]EINT Module - expires:4295045952, jiffies:4295045951, deb_in_jiffies:1, 
[ 1086.570017] -(0)[4960:mobile_log_d.rd][name:irq_mt_eic&]deb:1000, in mt_eint_set_timer_event
[ 1086.577606]  (0)[54:pmic_thread][name:pmic&][PMIC] [PMIC_INT] addr[0x2c4]=0x3000
[ 1086.577651]  (0)[54:pmic_thread][name:accdet&][accdet_int_handler]....					// 1
[ 1086.577689]  (0)[54:pmic_thread][name:accdet&][Accdet accdet_irq_handler]clear_accdet_eint_interrupt: ACCDET_IRQ_STS = 0x8005 //1
[ 1086.577774]  (0)[54:pmic_thread][name:accdet&][Accdet]clear_accdet_eint_interrupt: ACCDET_IRQ_STS = 0x405 //1
[ 1086.577833]  (0)[54:pmic_thread][name:accdet&][Accdet]Enter accdet_eint_func !!!!!!		// 1
[ 1086.577890]  (0)[54:pmic_thread][name:accdet&][Accdet]accdet_eint_func after cur_eint_state=0 //1

[ 1086.578034]  (0)[54:pmic_thread][name:accdet&][accdet_eint_int_handler]....								// 2
[ 1086.578074]  (0)[54:pmic_thread][name:accdet&][Accdet accdet_irq_handler]clear_accdet_eint_interrupt: ACCDET_IRQ_STS = 0x401	// 2
[ 1086.578138]  (0)[54:pmic_thread][name:accdet&][Accdet]clear_accdet_interrupt: ACCDET_IRQ_STS = 0x101		//2
[ 1086.578249]  (0)[54:pmic_thread][PWRAP] clear EINT flag mt_pmic_wrap_eint_status=0x0
[ 1086.579448]  (1)[143:kworker/u8:4][name:accdet&][Accdet]DCC EINT func :plug-out, cur_eint_state = 0	// 1
[ 1086.579515]  (1)[143:kworker/u8:4][name:accdet&][Accdet]clear_accdet_interrupt: ACCDET_IRQ_STS = 0x100	// 2
[ 1086.579766]  (1)[143:kworker/u8:4][name:accdet&]accdet: disable_accdet								// 1
[ 1086.580369]  (0)[113:kworker/u8:2][name:accdet&][Accdet]accdet interrupt happen:[Plug_out]current AB = 3	// 2
[ 1086.580406]  (0)[113:kworker/u8:2][name:accdet&][Accdet]PLUG_OUT state not change!						// 2
[ 1086.580436]  (0)[113:kworker/u8:2][name:accdet&][Accdet] Headset has plugged out
[ 1086.580487]  (0)[113:kworker/u8:2][name:accdet&][Accdet]check_cable_type:Clear interrupt:Done[0x0]!		// 2
[ 1086.580516]  (0)[113:kworker/u8:2][name:accdet&][Accdet]cable type:[No_device], status switch:[Plug_out]->[Plug_out] // 2
[ 1086.580545]  (0)[113:kworker/u8:2][name:accdet&][Accdet] Headset has plugged out don't set accdet state	// 2
[ 1086.580572]  (0)[113:kworker/u8:2][name:accdet&] [accdet] set state in cable_type  status				// 2
[ 1086.582908]  (1)[143:kworker/u8:4][name:accdet&] [accdet] set state in cable_type = NO_DEVICE		//1

[ 1086.830118] -(1)[0:swapper/1][name:irq_mt_eic&]EINT Module - expires:4295045978, jiffies:4295045977, deb_in_jiffies:1, 
[ 1086.830147] -(1)[0:swapper/1][name:irq_mt_eic&]deb:1000, in mt_eint_set_timer_event
[ 1086.837324]  (1)[54:pmic_thread][name:pmic&][PMIC] [PMIC_INT] addr[0x2c4]=0x2000
[ 1086.837358]  (1)[54:pmic_thread][name:accdet&][accdet_eint_int_handler]....
[ 1086.837385]  (1)[54:pmic_thread][name:accdet&][Accdet accdet_irq_handler]clear_accdet_eint_interrupt: ACCDET_IRQ_STS = 0x4
[ 1086.837441]  (1)[54:pmic_thread][name:accdet&][Accdet]clear_accdet_eint_interrupt: ACCDET_IRQ_STS = 0x8404
[ 1086.837508]  (1)[54:pmic_thread][name:accdet&][Accdet]Enter accdet_eint_func !!!!!!
[ 1086.837554]  (1)[54:pmic_thread][name:accdet&][Accdet]accdet_eint_func after cur_eint_state=1
[ 1086.837652]  (1)[54:pmic_thread][PWRAP] clear EINT flag mt_pmic_wrap_eint_status=0x0
[ 1086.837709]  (2)[143:kworker/u8:4][name:accdet&][Accdet]DCC EINT func :plug-in, cur_eint_state = 1
[ 1086.837742]  (2)[143:kworker/u8:4][name:accdet&][Accdet]accdet hardware init
[ 1086.837928]  (2)[143:kworker/u8:4][name:accdet&][Accdet]pin recog start!  micbias always on!
[ 1086.837955]  (2)[143:kworker/u8:4][name:accdet&]accdet: enable_accdet

三、半插入: 仅耳机


案例一	: 耳机按键误报 - 提交eService给mtk - 未回复
	现象	: 快速按压耳机【播放暂停键】，小概率出现误报为volume up 或volume down的情况(约100次误报1次)
	平台	: androidN,MTK6737
	排查过程: 1. 打开驱动中的log：
				alps\kernel-3.18\drivers\misc\mediatek\accdet\mt6735\accdet.c
					static void multi_key_detection(int current_status)
						if (0 == current_status) {
							cali_voltage = Accdet_PMIC_IMM_GetOneChannelValue(1);
				+			printk("[Accdet]adc cali_voltage1 = %d mv\n", cali_voltage);
							m_key = cur_key = key_check(cali_voltage);	// 根据电压判断 为3个按键中的哪个
						}
						send_key_event(cur_key, !current_status);		// input 上报耳机按键
						
						
					static void send_key_event(int keycode, int flag)
					{
						switch (keycode) {
						case DW_KEY:
				+			printk("[accdet]KEY_VOLUMEDOWN %d\n", flag);
						case UP_KEY:
				+			printk("[accdet]KEY_VOLUMEUP %d\n", flag);
						case MD_KEY:
				+			printk("[accdet]KEY_PLAYPAUSE %d\n", flag);
						}
					}
	
			  2. 快速按下耳机【播放暂停键】，约100次出现误报一次，导出log【adb shell dmesg > e:accdet.log】
				Line 16911: [  313.494871]  (0)[143:kworker/u8:3][Accdet]adc cali_voltage1 = 14 mv
				Line 16912: [  313.527480]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 1
				Line 16916: [  313.605934]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 0
				Line 16926: [  313.885214]  (0)[143:kworker/u8:3][Accdet]adc cali_voltage1 = 14 mv
				Line 16931: [  313.918753]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 1
				Line 16936: [  314.068243]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 0
				Line 16947: [  314.315231]  (0)[143:kworker/u8:3][Accdet]adc cali_voltage1 = 14 mv
				Line 16949: [  314.349070]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 1
				Line 16952: [  314.455528]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 0
				Line 16958: [  314.534878]  (0)[143:kworker/u8:3][Accdet]adc cali_voltage1 = 14 mv
				Line 16959: [  314.567700]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 1
				Line 16967: [  314.718421]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 0
				Line 16970: [  314.794847]  (0)[143:kworker/u8:3][Accdet]adc cali_voltage1 = 857 mv			// 通过pmic检测电压，错误值，由于在范围外被过滤
				Line 16978: [  314.984865]  (0)[143:kworker/u8:3][Accdet]adc cali_voltage1 = 14 mv
				Line 16981: [  315.018054]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 1
				Line 16987: [  315.095550]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 0
				Line 16994: [  315.174844]  (0)[143:kworker/u8:3][Accdet]adc cali_voltage1 = 14 mv
				Line 16995: [  315.207510]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 1
				Line 17003: [  315.358508]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 0
				Line 17010: [  315.605387]  (0)[143:kworker/u8:3][Accdet]adc cali_voltage1 = 14 mv
				Line 17012: [  315.639057]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 1
				Line 17020: [  315.784780]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 0
				Line 17023: [  315.864832]  (0)[143:kworker/u8:3][Accdet]adc cali_voltage1 = 14 mv
				Line 17027: [  315.897459]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 1
				Line 17032: [  316.047719]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 0
				Line 17039: [  316.124811]  (0)[143:kworker/u8:3][Accdet]adc cali_voltage1 = 335 mv			// 通过pmic检测电压，错误值，可能为电压不稳定导致
				Line 17040: [  316.164035]  (0)[143:kworker/u8:3][accdet]KEY_VOLUMEDOWN 1					// 误报为volume down
				Line 17043: [  316.235133]  (0)[143:kworker/u8:3][accdet]KEY_VOLUMEDOWN 0
				Line 17062: [  316.514019]  (1)[114:kworker/u8:2][Accdet]adc cali_voltage1 = 14 mv
				Line 17063: [  316.550660]  (1)[114:kworker/u8:2][accdet]KEY_PLAYPAUSE 1
				Line 17070: [  316.691048]  (0)[143:kworker/u8:3][accdet]KEY_PLAYPAUSE 0

			  注：	dts中写有耳机按键的电压区间
					  &accdet {
							headset-three-key-threshold = <0 80 220 500>;		// 不在此范围内将会被过滤掉
		
					0~80mV为暂停播放键
					80~220 mV为音量加
					220~500 mV为音量减

			  3. 更换品牌耳机(华为荣耀) - 一样会有小概率误报
			  
			  4. 减慢按压频率至约1秒按2次(之前约1秒按5次)，按压数百次未出现误报现象，怀疑是pmic 电压采用反应时间没那么快
					注： 减慢之后pmic 测量出来的电压较稳定，较少出现800多、900多的错误值
			  
			  5. 提交eService给mtk
				?  Issue ID: ALPS03841867 
				?  Project: MAGC6737T_65_N 
				?  HW Project: V615 
				?  Title: 快速按压耳机播放暂停键 小概率误报为音量加或音量减 
				?  Description: 
					Dear MTK, 
						MT6737 Android7.0快速(约1秒按5次)按压耳机播放暂停键，会有小概率(约100次出现一次)误报为音量加或音量减，
					更换华为荣耀耳机，也有此现象。放慢按下频率至约1秒按2次则无此现象。这边快慢分别抓了一份mtklog，请帮忙分析，
					看能否改善快速按压出现误报的情况 

	处理方案: mtk还未有回复
	总结	: 
	
案例二	: 
	现象	: 
	平台	: androidM,MTK6580
	排查过程: 1. 
	
			  2. 
			  
			  3. 
	处理方案: 
	总结	: 
	
案例三	: 
	现象	: 
	平台	: androidM,MTK6580
	排查过程: 1. 
	
			  2. 
			  
			  3. 
	处理方案: 
	总结	: