--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ */
+#ifndef SX933x_H
+#define SX933x_H
+
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+
+#if 0
+#include <linux/wakelock.h>
+#include <linux/earlysuspend.h>
+#include <linux/suspend.h>
+#endif
+/*
+ * I2C Registers
+ */
+#define SX933X_HOSTIRQSRC_REG 0x4000
+#define SX933X_HOSTIRQMSK_REG 0x4004
+#define SX933X_HOSTIRQCTRL_REG 0x4008
+#define SX933X_PAUSESTAT_REG 0x4010
+#define SX933X_AFECTRL_REG 0x4054
+#define SX933X_CLKGEN_REG 0x4200
+#define SX933X_I2CADDR_REG 0x41C4
+#define SX933X_RESET_REG 0x4240
+#define SX933X_CMD_REG 0x4280
+#define SX933X_TOPSTAT0_REG 0x4284
+#define SX933X_PINCFG_REG 0x42C0
+#define SX933X_PINDOUT_REG 0x42C4
+#define SX933X_PINDIN_REG 0x42C8
+#define SX933X_INFO_REG 0x42D8
+#define SX933X_STAT0_REG 0x8000
+#define SX933X_STAT1_REG 0x8004
+#define SX933X_STAT2_REG 0x8008
+#define SX933X_IRQCFG0_REG 0x800C
+#define SX933X_IRQCFG1_REG 0x8010
+#define SX933X_IRQCFG2_REG 0x8014
+#define SX933X_IRQCFG3_REG 0x8018
+#define SX933X_SCANPERIOD_REG 0x801C
+#define SX933X_GNRLCTRL2_REG 0x8020
+#define SX933X_AFEPARAMSPH0_REG 0x8024
+#define SX933X_AFEPHPH0_REG 0x8028
+#define SX933X_AFEPARAMSPH1_REG 0x802C
+#define SX933X_AFEPHPH1_REG 0x8030
+#define SX933X_AFEPARAMSPH2_REG 0x8034
+#define SX933X_AFEPHPH2_REG 0x8038
+#define SX933X_AFEPARAMSPH3_REG 0x803C
+#define SX933X_AFEPHPH3_REG 0x8040
+#define SX933X_AFEPARAMSPH4_REG 0x8044
+#define SX933X_AFEPHPH4_REG 0x8048
+#define SX933X_AFEPARAMSPH5_REG 0x804c
+#define SX933X_AFEPHPH5_REG 0x8050
+
+#define SX933X_ADCFILTPH0_REG 0x8054
+#define SX933X_AVGBFILTPH0_REG 0x8058
+#define SX933X_AVGAFILTPH0_REG 0x805C
+#define SX933X_ADVDIG0PH0_REG 0x8060
+#define SX933X_ADVDIG1PH0_REG 0x8064
+#define SX933X_ADVDIG2PH0_REG 0x8068
+#define SX933X_ADVDIG3PH0_REG 0x806C
+#define SX933X_ADVDIG4PH0_REG 0x8070
+#define SX933X_ADCFILTPH1_REG 0x8074
+#define SX933X_AVGBFILTPH1_REG 0x8078
+#define SX933X_AVGAFILTPH1_REG 0x807C
+#define SX933X_ADVDIG0PH1_REG 0x8080
+#define SX933X_ADVDIG1PH1_REG 0x8084
+#define SX933X_ADVDIG2PH1_REG 0x8088
+#define SX933X_ADVDIG3PH1_REG 0x808C
+#define SX933X_ADVDIG4PH1_REG 0x8090
+#define SX933X_ADCFILTPH2_REG 0x8094
+#define SX933X_AVGBFILTPH2_REG 0x8098
+#define SX933X_AVGAFILTPH2_REG 0x809C
+#define SX933X_ADVDIG0PH2_REG 0x80A0
+#define SX933X_ADVDIG1PH2_REG 0x80A4
+#define SX933X_ADVDIG2PH2_REG 0x80A8
+#define SX933X_ADVDIG3PH2_REG 0x80AC
+#define SX933X_ADVDIG4PH2_REG 0x80B0
+#define SX933X_ADCFILTPH3_REG 0x80B4
+#define SX933X_AVGBFILTPH3_REG 0x80B8
+#define SX933X_AVGAFILTPH3_REG 0x80BC
+#define SX933X_ADVDIG0PH3_REG 0x80C0
+#define SX933X_ADVDIG1PH3_REG 0x80C4
+#define SX933X_ADVDIG2PH3_REG 0x80C8
+#define SX933X_ADVDIG3PH3_REG 0x80CC
+#define SX933X_ADVDIG4PH3_REG 0x80D0
+#define SX933X_ADCFILTPH4_REG 0x80D4
+#define SX933X_AVGBFILTPH4_REG 0x80D8
+#define SX933X_AVGAFILTPH4_REG 0x80DC
+#define SX933X_ADVDIG0PH4_REG 0x80E0
+#define SX933X_ADVDIG1PH4_REG 0x80E4
+#define SX933X_ADVDIG2PH4_REG 0x80E8
+#define SX933X_ADVDIG3PH4_REG 0x80EC
+#define SX933X_ADVDIG4PH4_REG 0x80F0
+#define SX933X_ADCFILTPH5_REG 0x80F4
+#define SX933X_AVGBFILTPH5_REG 0x80F8
+#define SX933X_AVGAFILTPH5_REG 0x80FC
+#define SX933X_ADVDIG0PH5_REG 0x8100
+#define SX933X_ADVDIG1PH5_REG 0x8104
+#define SX933X_ADVDIG2PH5_REG 0x8108
+#define SX933X_ADVDIG3PH5_REG 0x810C
+#define SX933X_ADVDIG4PH5_REG 0x8110
+
+#define SX933X_REFCORRA_REG 0x8124
+#define SX933X_REFCORRB_REG 0x8128
+
+#define SX933X_SMARTSAR0A_REG 0x812C
+#define SX933X_SMARTSAR1A_REG 0x8130
+#define SX933X_SMARTSAR2A_REG 0x8134
+
+#define SX933X_SMARTSAR0B_REG 0x8138
+#define SX933X_SMARTSAR1B_REG 0x813C
+#define SX933X_SMARTSAR2B_REG 0x8140
+
+#define SX933X_SMARTSAR0C_REG 0x8144
+#define SX933X_SMARTSAR1C_REG 0x8148
+#define SX933X_SMARTSAR2C_REG 0x814C
+
+
+
+
+#define SX933X_AUTOFREQ0_REG 0x8154
+#define SX933X_AUTOFREQ1_REG 0x8158
+
+#define SX933X_USEPH0_REG 0x815C
+#define SX933X_USEPH1_REG 0x8160
+#define SX933X_USEPH2_REG 0x8164
+#define SX933X_USEPH3_REG 0x8168
+#define SX933X_USEPH4_REG 0x816C
+#define SX933X_USEPH5_REG 0x8170
+
+#define SX933X_AVGPH0_REG 0x8174
+#define SX933X_AVGPH1_REG 0x8178
+#define SX933X_AVGPH2_REG 0x817C
+#define SX933X_AVGPH3_REG 0x8180
+#define SX933X_AVGPH4_REG 0x8184
+#define SX933X_AVGPH5_REG 0x8188
+
+#define SX933X_DIFFPH0_REG 0x818C
+#define SX933X_DIFFPH1_REG 0x8190
+#define SX933X_DIFFPH2_REG 0x8194
+#define SX933X_DIFFPH3_REG 0x8198
+#define SX933X_DIFFPH4_REG 0x819C
+#define SX933X_DIFFPH5_REG 0x81A0
+
+#define SX933X_OFFSETPH0_REG SX933X_AFEPHPH0_REG//bit14:0
+#define SX933X_OFFSETPH1_REG SX933X_AFEPHPH1_REG//bit14:0
+#define SX933X_OFFSETPH2_REG SX933X_AFEPHPH2_REG//bit14:0
+#define SX933X_OFFSETPH3_REG SX933X_AFEPHPH3_REG//bit14:0
+#define SX933X_OFFSETPH4_REG SX933X_AFEPHPH4_REG//bit14:0
+#define SX933X_OFFSETPH5_REG SX933X_AFEPHPH5_REG//bit14:0
+
+//i2c register bit mask
+#define MSK_IRQSTAT_RESET 0x00000080
+#define MSK_IRQSTAT_TOUCH 0x00000040
+#define MSK_IRQSTAT_RELEASE 0x00000020
+#define MSK_IRQSTAT_COMP 0x00000010
+#define MSK_IRQSTAT_CONV 0x00000008
+#define MSK_IRQSTAT_PROG2IRQ 0x00000004
+#define MSK_IRQSTAT_PROG1IRQ 0x00000002
+#define MSK_IRQSTAT_PROG0IRQ 0x00000001
+
+#define I2C_SOFTRESET_VALUE 0x000000DE
+
+#define I2C_REGCMD_PHEN 0x0000000F
+#define I2C_REGCMD_COMPEN 0x0000000E
+#define I2C_REGCMD_EN_SLEEP 0x0000000D
+#define I2C_REGCMD_EX_SLEEP 0x0000000C
+
+#define I2C_REGGNRLCTRL2_PHEN_MSK 0x000000FF
+#define I2C_REGGNRLCTRL2_COMPEN_MSK 0x00ff0000
+
+#define MSK_REGSTAT0_STEADYSTAT5 0x20
+#define MSK_REGSTAT0_STEADYSTAT4 0x10
+#define MSK_REGSTAT0_STEADYSTAT3 0x08
+#define MSK_REGSTAT0_STEADYSTAT2 0x04
+#define MSK_REGSTAT0_STEADYSTAT1 0x02
+#define MSK_REGSTAT0_STEADYSTAT0 0x01
+
+#define MSK_REGSTAT0_BODYSTAT5 ((long int)0x20<<8)
+#define MSK_REGSTAT0_BODYSTAT4 ((long int)0x10<<8)
+#define MSK_REGSTAT0_BODYSTAT3 ((long int)0x08<<8)
+#define MSK_REGSTAT0_BODYSTAT2 ((long int)0x04<<8)
+#define MSK_REGSTAT0_BODYSTAT1 ((long int)0x02<<8)
+#define MSK_REGSTAT0_BODYSTAT0 ((long int)0x01<<8)
+
+#define MSK_REGSTAT0_TABLESTAT5 ((long int)0x20<<16)
+#define MSK_REGSTAT0_TABLESTAT4 ((long int)0x10<<16)
+#define MSK_REGSTAT0_TABLESTAT3 ((long int)0x08<<16)
+#define MSK_REGSTAT0_TABLESTAT2 ((long int)0x04<<16)
+#define MSK_REGSTAT0_TABLESTAT1 ((long int)0x02<<16)
+#define MSK_REGSTAT0_TABLESTAT0 ((long int)0x01<<16)
+
+#define MSK_REGSTAT0_PROXSTAT5 ((long int)0x20<<24)
+#define MSK_REGSTAT0_PROXSTAT4 ((long int)0x10<<24)
+#define MSK_REGSTAT0_PROXSTAT3 ((long int)0x08<<24)
+#define MSK_REGSTAT0_PROXSTAT2 ((long int)0x04<<24)
+#define MSK_REGSTAT0_PROXSTAT1 ((long int)0x02<<24)
+#define MSK_REGSTAT0_PROXSTAT0 ((long int)0x01<<24)
+
+#define MSK_REGSTAT1_FAILSTAT5 ((long int)0x20<<24)
+#define MSK_REGSTAT1_FAILSTAT4 ((long int)0x10<<24)
+#define MSK_REGSTAT1_FAILSTAT3 ((long int)0x08<<24)
+#define MSK_REGSTAT1_FAILSTAT2 ((long int)0x04<<24)
+#define MSK_REGSTAT1_FAILSTAT1 ((long int)0x02<<24)
+#define MSK_REGSTAT1_FAILSTAT0 ((long int)0x01<<24)
+
+#define MSK_REGSTAT1_COMPSTAT5 ((long int)0x20<<16)
+#define MSK_REGSTAT1_COMPSTAT4 ((long int)0x10<<16)
+#define MSK_REGSTAT1_COMPSTAT3 ((long int)0x08<<16)
+#define MSK_REGSTAT1_COMPSTAT2 ((long int)0x04<<16)
+#define MSK_REGSTAT1_COMPSTAT1 ((long int)0x02<<16)
+#define MSK_REGSTAT1_COMPSTAT0 ((long int)0x01<<16)
+#define MSK_REGSTAT1_SATSTAT5 ((long int)0x20<<8)
+#define MSK_REGSTAT1_SATSTAT4 ((long int)0x10<<8)
+#define MSK_REGSTAT1_SATSTAT3 ((long int)0x08<<8)
+#define MSK_REGSTAT1_SATSTAT2 ((long int)0x04<<8)
+#define MSK_REGSTAT1_SATSTAT1 ((long int)0x02<<8)
+#define MSK_REGSTAT1_SATSTAT0 ((long int)0x01<<8)
+
+
+
+#define MSK_REGSTAT2_STARTUPSTAT5 ((long int)0x20)
+#define MSK_REGSTAT2_STARTUPSTAT4 ((long int)0x10)
+#define MSK_REGSTAT2_STARTUPSTAT3 ((long int)0x08)
+#define MSK_REGSTAT2_STARTUPSTAT2 ((long int)0x04)
+#define MSK_REGSTAT2_STARTUPSTAT1 ((long int)0x02)
+#define MSK_REGSTAT2_STARTUPSTAT0 ((long int)0x01)
+
+#define MSK_REGSTAT1_STEADYSTATALL 0x02
+
+
+#define SX933X_STAT0_PROXSTAT_PH5_FLAG 0x20000000
+#define SX933X_STAT0_PROXSTAT_PH4_FLAG 0x10000000
+#define SX933X_STAT0_PROXSTAT_PH3_FLAG 0x08000000
+#define SX933X_STAT0_PROXSTAT_PH2_FLAG 0x04000000
+#define SX933X_STAT0_PROXSTAT_PH1_FLAG 0x02000000
+#define SX933X_STAT0_PROXSTAT_PH0_FLAG 0x01000000
+
+#define SX933X_STAT0_BODYSTAT_PH5_FLAG 0x00002000
+#define SX933X_STAT0_BODYSTAT_PH4_FLAG 0x00001000
+#define SX933X_STAT0_BODYSTAT_PH3_FLAG 0x00000800
+#define SX933X_STAT0_BODYSTAT_PH2_FLAG 0x00000400
+#define SX933X_STAT0_BODYSTAT_PH1_FLAG 0x00000200
+#define SX933X_STAT0_BODYSTAT_PH0_FLAG 0x00000100
+
+/* Chip ID */
+#define SX933X_WHOAMI_VALUE 0x00003113
+/*command*/
+#define SX933X_PHASE_CONTROL 0x0000000F
+#define SX933X_COMPENSATION_CONTROL 0x0000000E
+#define SX933X_ENTER_CONTROL 0x0000000D
+#define SX933X_EXIT_CONTROL 0x0000000C
+
+
+
+
+/**************************************
+ * define platform data
+ *
+ **************************************/
+struct smtc_reg_data
+{
+ unsigned int reg;
+ unsigned int val;
+};
+
+typedef struct smtc_reg_data smtc_reg_data_t;
+typedef struct smtc_reg_data *psmtc_reg_data_t;
+
+
+struct _buttonInfo
+{
+ /*! The Key to send to the input */
+ // int keycode; //not use
+ /*! Mask to look for on Prox Touch Status */
+ int ProxMask;
+ /*! Mask to look for on Table Touch Status */
+ int BodyMask;
+ /*! Current state of button. */
+ int state;
+ struct input_dev *input_dev;
+ char *name;
+ struct sensors_classdev sensors_capsensor_cdev;
+ bool enabled;
+ //may different project use different buttons
+ bool used;
+};
+
+struct totalButtonInformation
+{
+ struct _buttonInfo *buttons;
+ int buttonSize;
+ //struct input_dev *input; //not used
+};
+
+typedef struct totalButtonInformation buttonInformation_t;
+typedef struct totalButtonInformation *pbuttonInformation_t;
+
+
+/* Define Registers that need to be initialized to values different than
+ * default
+ */
+/*define the value without Phase enable settings for easy changes in driver*/
+static const struct smtc_reg_data sx933x_i2c_reg_setup[] =
+{
+ //
+ {
+ .reg = SX933X_AFECTRL_REG,
+ .val = 0x00000400,
+ },
+ //
+ {
+ .reg = SX933X_CLKGEN_REG,
+ .val = 0x00000008,
+ },
+ //
+ {
+ .reg = SX933X_PINCFG_REG,
+ .val = 0x08000000,
+ },
+ {
+ .reg = SX933X_PINDOUT_REG,
+ .val = 0x0000003F,
+ },
+ //
+ {
+ .reg = SX933X_IRQCFG0_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_IRQCFG1_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_IRQCFG2_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_IRQCFG3_REG,
+ .val = 0x00000000,
+ },
+ //
+ {
+ .reg = SX933X_SCANPERIOD_REG,
+ .val = 0x00000032,
+ },
+ {
+ .reg = SX933X_GNRLCTRL2_REG,
+ .val = 0x3F001F, //enable phase0~phase4 0x00FF0001,
+ },
+ {
+ .reg = SX933X_AFEPARAMSPH0_REG,
+ .val = 0x00010001,
+ },
+ {
+ .reg = SX933X_AFEPHPH0_REG,
+ .val = 0x00A00BE3,
+ },
+ {
+ .reg = SX933X_AFEPARAMSPH1_REG,
+ .val = 0x300004D4,
+ },
+ {
+ .reg = SX933X_AFEPHPH1_REG,
+ .val = 0x00,
+ },
+ {
+ .reg = SX933X_AFEPARAMSPH2_REG,
+ .val = 0x300004D4,//0x44F,//AFE setting for phase2 3.85pf
+ },
+ {
+ .reg = SX933X_AFEPHPH2_REG,
+ .val = 0x00,//Configure for phase2
+ },
+ {
+ .reg = SX933X_AFEPARAMSPH3_REG,
+ .val = 0x300004D4,//0x44F,//AFE setting for phase3 3.3pf
+ },
+ {
+ .reg = SX933X_AFEPHPH3_REG,
+ .val = 0x00,//Configure for phase3
+ },
+ {
+ .reg = SX933X_AFEPARAMSPH4_REG,
+ .val = 0x300004D4,//0x44F,//AFE setting for phase4 9.9pf
+ },
+ {
+ .reg = SX933X_AFEPHPH4_REG,
+ .val = 0x00,//Configure for phase4
+ },
+ {
+ .reg = SX933X_AFEPARAMSPH5_REG,
+ .val = 0x300004D4,
+ },
+ {
+ .reg = SX933X_AFEPHPH5_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADCFILTPH0_REG,
+ .val = 0x10162000,
+ },
+ {
+ .reg = SX933X_AVGBFILTPH0_REG,
+ .val = 0x20400017,
+ },
+ {
+ .reg = SX933X_AVGAFILTPH0_REG,
+ .val = 0x31CF9110,
+ },
+ {
+ .reg = SX933X_ADVDIG0PH0_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG1PH0_REG,
+ .val = 0x00,
+ },
+ {
+ .reg = SX933X_ADVDIG2PH0_REG,
+ .val = 0x00,
+ },
+ {
+ .reg = SX933X_ADVDIG3PH0_REG ,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG4PH0_REG,
+ .val = 0x10000,
+ },
+ {
+ .reg = SX933X_ADCFILTPH1_REG,
+ .val = 0x100000,
+ },
+ {
+ .reg = SX933X_AVGBFILTPH1_REG,
+ .val = 0x20600C00,
+ },
+ {
+ .reg = SX933X_AVGAFILTPH1_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG0PH1_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG1PH1_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG2PH1_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG3PH1_REG ,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG4PH1_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADCFILTPH2_REG,
+ .val = 0x100000,
+ },
+ {
+ .reg = SX933X_AVGBFILTPH2_REG,
+ .val = 0x20600C00,
+ },
+ {
+ .reg = SX933X_AVGAFILTPH2_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG0PH2_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG1PH2_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG2PH2_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG3PH2_REG ,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG4PH2_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADCFILTPH3_REG,
+ .val = 0x100000,
+ },
+ {
+ .reg = SX933X_AVGBFILTPH3_REG,
+ .val = 0x20600C00,
+ },
+ {
+ .reg = SX933X_AVGAFILTPH3_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG0PH3_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG1PH3_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG2PH3_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG3PH3_REG ,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG4PH3_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADCFILTPH4_REG,
+ .val = 0x100000,
+ },
+ {
+ .reg = SX933X_AVGBFILTPH4_REG,
+ .val = 0x20600C00,
+ },
+ {
+ .reg = SX933X_AVGAFILTPH4_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG0PH4_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG1PH4_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG2PH4_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG3PH4_REG ,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG4PH4_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADCFILTPH5_REG,
+ .val = 0x100000,
+ },
+ {
+ .reg = SX933X_AVGBFILTPH5_REG,
+ .val = 0x20600C00,
+ },
+ {
+ .reg = SX933X_AVGAFILTPH5_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG0PH5_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG1PH5_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG2PH5_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG3PH5_REG ,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_ADVDIG4PH5_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_REFCORRA_REG,
+ .val = 0x7B13B10,
+ },
+ {
+ .reg = SX933X_REFCORRB_REG,
+ .val = 0x4000000,
+ },
+ {
+ .reg = SX933X_SMARTSAR0A_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_SMARTSAR1A_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_SMARTSAR2A_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_SMARTSAR0B_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_SMARTSAR1B_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_SMARTSAR2B_REG,
+ .val = 0x00000000,
+ },
+ //
+ {
+ .reg = SX933X_AUTOFREQ0_REG,
+ .val = 0x00000000,
+ },
+ {
+ .reg = SX933X_AUTOFREQ1_REG,
+ .val = 0x00000000,
+ },
+ //
+ {
+ .reg = SX933X_HOSTIRQMSK_REG,
+ .val = 0x00000078,
+ },
+ {
+ .reg = SX933X_HOSTIRQCTRL_REG,
+ .val = 0x00,
+ }
+};
+
+static struct _buttonInfo psmtcButtons[] =
+{
+ {
+ .ProxMask = SX933X_STAT0_PROXSTAT_PH0_FLAG,
+ .BodyMask = SX933X_STAT0_BODYSTAT_PH0_FLAG,
+ .name = "Moto_CapSense_Ch0",
+ .enabled = false,
+ .used = false,
+ },
+ {
+ .ProxMask = SX933X_STAT0_PROXSTAT_PH1_FLAG,
+ .BodyMask = SX933X_STAT0_BODYSTAT_PH1_FLAG,
+ .name = "Moto_CapSense_Ch1",
+ .enabled = false,
+ .used = false,
+ },
+ {
+ .ProxMask = SX933X_STAT0_PROXSTAT_PH2_FLAG,
+ .BodyMask = SX933X_STAT0_BODYSTAT_PH2_FLAG,
+ .name = "Moto_CapSense_Ch2",
+ .enabled = false,
+ .used = false,
+ },
+ {
+ .ProxMask = SX933X_STAT0_PROXSTAT_PH3_FLAG,
+ .BodyMask = SX933X_STAT0_BODYSTAT_PH3_FLAG,
+ .name = "Moto_CapSense_Ch3",
+ .enabled = false,
+ .used = false,
+ },
+ {
+ .ProxMask = SX933X_STAT0_PROXSTAT_PH4_FLAG,
+ .BodyMask = SX933X_STAT0_BODYSTAT_PH4_FLAG,
+ .name = "Moto_CapSense_Ch4",
+ .enabled = false,
+ .used = false,
+ },
+};
+
+struct sx933x_platform_data
+{
+ int i2c_reg_num;
+ u32 button_used_flag;
+ struct regulator *cap_vdd;
+ bool cap_vdd_en;
+ struct smtc_reg_data *pi2c_reg;
+ int irq_gpio;
+ pbuttonInformation_t pbuttonInformation;
+
+ int (*get_is_nirq_low)(void);
+
+ int (*init_platform_hw)(struct i2c_client *client);
+ void (*exit_platform_hw)(struct i2c_client *client);
+};
+typedef struct sx933x_platform_data sx933x_platform_data_t;
+typedef struct sx933x_platform_data *psx933x_platform_data_t;
+
+/***************************************
+ * define data struct/interrupt
+ *
+ ***************************************/
+
+#define MAX_NUM_STATUS_BITS (8)
+
+typedef struct sx93XX sx93XX_t, *psx93XX_t;
+struct sx93XX
+{
+ void * bus; /* either i2c_client or spi_client */
+
+ struct device *pdev; /* common device struction for linux */
+
+ void *pDevice; /* device specific struct pointer */
+
+ /* Function Pointers */
+ int (*init)(psx93XX_t this); /* (re)initialize device */
+
+ /* since we are trying to avoid knowing registers, create a pointer to a
+ * common read register which would be to read what the interrupt source
+ * is from
+ */
+ int (*refreshStatus)(psx93XX_t this); /* read register status */
+
+ int (*get_nirq_low)(void); /* get whether nirq is low (platform data) */
+
+ /* array of functions to call for corresponding status bit */
+ void (*statusFunc[MAX_NUM_STATUS_BITS])(psx93XX_t this);
+
+ /* Global variable */
+ u8 failStatusCode; /*Fail status code*/
+ bool reg_in_dts;
+
+ spinlock_t lock; /* Spin Lock used for nirq worker function */
+ int irq; /* irq number used */
+
+ /* whether irq should be ignored.. cases if enable/disable irq is not used
+ * or does not work properly */
+ char irq_disabled;
+
+ u8 useIrqTimer; /* older models need irq timer for pen up cases */
+
+ int irqTimeout; /* msecs only set if useIrqTimer is true */
+
+ /* struct workqueue_struct *ts_workq; */ /* if want to use non default */
+ struct delayed_work dworker; /* work struct for worker function */
+ u8 phaseselect;
+};
+
+int sx93XX_IRQ_init(psx93XX_t this);
+
+#endif
--- /dev/null
+/*! \file sx933x.c
+ * \brief SX933x Driver
+ *
+ * Driver for the SX933x
+ * Copyright (c) 2018 Semtech Corp
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#define DRIVER_NAME "sx933x"
+
+#define MAX_WRITE_ARRAY_SIZE 32
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/input.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/syscalls.h>
+//#include <linux/wakelock.h>
+#include <linux/uaccess.h>
+#include <linux/sort.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+#include <linux/of_gpio.h>
+#include <linux/sensors.h>
+#include "sx933x.h" /* main struct, interrupt,init,pointers */
+
+
+#define SX933x_DEBUG 1
+#define LOG_TAG "[sar SX933x]: "
+
+#if SX933x_DEBUG
+#define LOG_INFO(fmt, args...) pr_info(LOG_TAG fmt, ##args)
+#else
+#define LOG_INFO(fmt, args...)
+#endif
+#define LOG_DBG(fmt, args...) pr_info(LOG_TAG fmt, ##args)
+
+#define USE_DTS_REG
+
+#define SX933x_I2C_M_WR 0 /* for i2c Write */
+#define SX933x_I2C_M_RD 1 /* for i2c Read */
+
+#define IDLE 0
+#define PROXACTIVE 1
+#define BODYACTIVE 2
+
+#define MAIN_SENSOR 1 //CS1
+
+/* Failer Index */
+#define SX933x_ID_ERROR 1
+#define SX933x_NIRQ_ERROR 2
+#define SX933x_CONN_ERROR 3
+#define SX933x_I2C_ERROR 4
+
+/*! \struct sx933x
+ * Specialized struct containing input event data, platform data, and
+ * last cap state read if needed.
+ */
+typedef struct sx933x
+{
+ pbuttonInformation_t pbuttonInformation;
+ psx933x_platform_data_t hw; /* specific platform data settings */
+} sx933x_t, *psx933x_t;
+
+static int irq_gpio_num;
+static psx93XX_t global_sx933x;
+
+static int sx933x_get_nirq_state(void)
+{
+ return !gpio_get_value(irq_gpio_num);
+}
+
+
+/*! \fn static int sx933x_i2c_write_16bit(psx93XX_t this, u8 address, u8 value)
+ * \brief Sends a write register to the device
+ * \param this Pointer to main parent struct
+ * \param address 8-bit register address
+ * \param value 8-bit register value to write to address
+ * \return Value from i2c_master_send
+ */
+
+static int sx933x_i2c_write_16bit(psx93XX_t this, u16 reg_addr, u32 buf)
+{
+ int ret = -ENOMEM;
+ struct i2c_client *i2c = 0;
+ struct i2c_msg msg;
+ unsigned char w_buf[6];
+
+ if (this && this->bus)
+ {
+ i2c = this->bus;
+ w_buf[0] = (u8)(reg_addr>>8);
+ w_buf[1] = (u8)(reg_addr);
+ w_buf[2] = (u8)(buf>>24);
+ w_buf[3] = (u8)(buf>>16);
+ w_buf[4] = (u8)(buf>>8);
+ w_buf[5] = (u8)(buf);
+
+ msg.addr = i2c->addr;
+ msg.flags = SX933x_I2C_M_WR;
+ msg.len = 6; //2bytes regaddr + 4bytes data
+ msg.buf = (u8 *)w_buf;
+
+ ret = i2c_transfer(i2c->adapter, &msg, 1);
+ if (ret < 0)
+ LOG_DBG("%s - i2c write reg 0x%x error %d\n", __func__, reg_addr, ret);
+
+ }
+ return ret;
+}
+
+/*! \fn static int sx933x_i2c_read_16bit(psx93XX_t this, u8 address, u8 *value)
+ * \brief Reads a register's value from the device
+ * \param this Pointer to main parent struct
+ * \param address 8-Bit address to read from
+ * \param value Pointer to 8-bit value to save register value to
+ * \return Value from i2c_smbus_read_byte_data if < 0. else 0
+ */
+static int sx933x_i2c_read_16bit(psx93XX_t this, u16 reg_addr, u32 *data32)
+{
+ int ret = -ENOMEM;
+ struct i2c_client *i2c = 0;
+ struct i2c_msg msg[2];
+ u8 w_buf[2];
+ u8 buf[4];
+
+ if (this && this->bus)
+ {
+ i2c = this->bus;
+
+ w_buf[0] = (u8)(reg_addr>>8);
+ w_buf[1] = (u8)(reg_addr);
+
+ msg[0].addr = i2c->addr;
+ msg[0].flags = SX933x_I2C_M_WR;
+ msg[0].len = 2;
+ msg[0].buf = (u8 *)w_buf;
+
+ msg[1].addr = i2c->addr;;
+ msg[1].flags = SX933x_I2C_M_RD;
+ msg[1].len = 4;
+ msg[1].buf = (u8 *)buf;
+
+ ret = i2c_transfer(i2c->adapter, msg, 2);
+ if (ret < 0)
+ LOG_DBG("%s - i2c read reg 0x%x error %d\n", __func__, reg_addr, ret);
+
+ data32[0] = ((u32)buf[0]<<24) | ((u32)buf[1]<<16) | ((u32)buf[2]<<8) | ((u32)buf[3]);
+
+ }
+ return ret;
+}
+
+
+
+
+//static int sx933x_set_mode(psx93XX_t this, unsigned char mode);
+
+/*! \fn static int read_regStat(psx93XX_t this)
+ * \brief Shortcut to read what caused interrupt.
+ * \details This is to keep the drivers a unified
+ * function that will read whatever register(s)
+ * provide information on why the interrupt was caused.
+ * \param this Pointer to main parent struct
+ * \return If successful, Value of bit(s) that cause interrupt, else 0
+ */
+static int read_regStat(psx93XX_t this)
+{
+ u32 data = 0;
+ if (this)
+ {
+ if (sx933x_i2c_read_16bit(this,SX933X_HOSTIRQSRC_REG,&data) > 0) //bug
+ return (data & 0x00FF);
+ }
+ return 0;
+}
+
+static int sx933x_Hardware_Check(psx93XX_t this)
+{
+ int ret;
+ u32 idCode;
+ u8 loop = 0;
+ this->failStatusCode = 0;
+
+ //Check th IRQ Status
+ while(this->get_nirq_low && this->get_nirq_low())
+ {
+ read_regStat(this);
+ msleep(100);
+ if(++loop >10)
+ {
+ this->failStatusCode = SX933x_NIRQ_ERROR;
+ break;
+ }
+ }
+
+ //Check I2C Connection
+ ret = sx933x_i2c_read_16bit(this, SX933X_INFO_REG, &idCode);
+ if(ret < 0)
+ {
+ this->failStatusCode = SX933x_I2C_ERROR;
+ }
+
+ if(idCode!= SX933X_WHOAMI_VALUE)
+ {
+ this->failStatusCode = SX933x_ID_ERROR;
+ }
+
+ LOG_DBG("sx933x idcode = 0x%x, failcode = 0x%x\n", idCode, this->failStatusCode);
+ return (int)this->failStatusCode;
+}
+
+static int sx933x_global_variable_init(psx93XX_t this)
+{
+ this->irq_disabled = 0;
+ this->failStatusCode = 0;
+ this->reg_in_dts = true;
+ return 0;
+}
+
+/*! \brief Perform a manual offset calibration
+ * \param this Pointer to main parent struct
+ * \return Value return value from the write register
+ */
+static int manual_offset_calibration(psx93XX_t this)
+{
+ int ret = 0;
+ ret = sx933x_i2c_write_16bit(this, SX933X_CMD_REG, I2C_REGCMD_COMPEN);
+ return ret;
+
+}
+
+/****************************************************************************/
+/*! \brief sysfs show function for manual calibration which currently just
+ * returns register value.
+ */
+static ssize_t manual_offset_calibration_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ u32 reg_value = 0;
+ psx93XX_t this = dev_get_drvdata(dev);
+
+ LOG_DBG("Reading IRQSTAT_REG\n");
+ sx933x_i2c_read_16bit(this,SX933X_HOSTIRQSRC_REG,®_value);
+ return sprintf(buf, "%d\n", reg_value);
+}
+
+
+static ssize_t manual_offset_calibration_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned long val;
+ psx93XX_t this = dev_get_drvdata(dev);
+
+ if (kstrtoul(buf, 10, &val)) //(strict_strtoul(buf, 10, &val)) {
+ {
+ LOG_DBG(" %s - Invalid Argument\n", __func__);
+ return -EINVAL;
+ }
+
+ if (val)
+ manual_offset_calibration(this);
+
+ return count;
+}
+
+/****************************************************************************/
+static ssize_t sx933x_register_write_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ u32 reg_address = 0, val = 0;
+ psx93XX_t this = dev_get_drvdata(dev);
+
+ if (sscanf(buf, "%x,%x", ®_address, &val) != 2)
+ {
+ LOG_DBG("%s - The number of data are wrong\n",__func__);
+ return -EINVAL;
+ }
+
+ sx933x_i2c_write_16bit(this, reg_address, val);
+
+ LOG_DBG("%s - Register(0x%x) data(0x%x)\n",__func__, reg_address, val);
+ return count;
+}
+
+static ssize_t sx933x_register_read_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ u32 val=0;
+ int regist = 0;
+ int nirq_state = 0;
+ psx93XX_t this = dev_get_drvdata(dev);
+
+ if (sscanf(buf, "%x", ®ist) != 1)
+ {
+ LOG_DBG("%s - The number of data are wrong\n",__func__);
+ return -EINVAL;
+ }
+
+ sx933x_i2c_read_16bit(this, regist, &val);
+ nirq_state = sx933x_get_nirq_state();
+
+ LOG_DBG("%s - Register(0x%2x) data(0x%4x) nirq_state(%d)\n",__func__, regist, val, nirq_state);
+ return count;
+}
+
+static void read_rawData(psx93XX_t this)
+{
+ u8 csx, index;
+ s32 useful;
+ s32 average;
+ s32 diff;
+ u32 uData;
+ u16 offset;
+ //s32 state = 0;
+
+ if(this)
+ {
+ for(csx =0; csx<5; csx++)
+ {
+ index = csx*4;
+ sx933x_i2c_read_16bit(this, SX933X_USEPH0_REG + index, &uData);
+ useful = (s32)uData>>10;
+ sx933x_i2c_read_16bit(this, SX933X_AVGPH0_REG + index, &uData);
+ average = (s32)uData>>10;
+ sx933x_i2c_read_16bit(this, SX933X_DIFFPH0_REG + index, &uData);
+ diff = (s32)uData>>10;
+ sx933x_i2c_read_16bit(this, SX933X_OFFSETPH0_REG + index*2, &uData);
+ offset = (u16)(uData & 0x7FFF);
+ //state = psmtcButtons[csx].state;
+ LOG_DBG("[PH: %d] Useful = %d Average = %d, DIFF = %d Offset = %d \n",
+ csx,useful,average,diff,offset);
+ }
+ }
+}
+
+static ssize_t sx933x_raw_data_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ char *p = buf;
+ int csx;
+ s32 useful, average, diff;
+ u32 uData;
+ u16 offset;
+ psx93XX_t this = dev_get_drvdata(dev);
+ if(this) {
+ for(csx =0; csx<5; csx++) {
+ sx933x_i2c_read_16bit(this, SX933X_USEPH0_REG + csx*4, &uData);
+ useful = (s32)uData>>10;
+ sx933x_i2c_read_16bit(this, SX933X_AVGPH0_REG + csx*4, &uData);
+ average = (s32)uData>>10;
+ sx933x_i2c_read_16bit(this, SX933X_DIFFPH0_REG + csx*4, &uData);
+ diff = (s32)uData>>10;
+ sx933x_i2c_read_16bit(this, SX933X_OFFSETPH0_REG + csx*8, &uData);
+ offset = (u16)(uData & 0x7FFF);
+ p += snprintf(p, PAGE_SIZE, "[PH: %d] Useful = %d, Average = %d, DIFF = %d Offset = %d \n",
+ csx,useful,average,diff,offset);
+ }
+ }
+ return (p-buf);
+}
+
+static DEVICE_ATTR(manual_calibrate, 0664, manual_offset_calibration_show,manual_offset_calibration_store);
+static DEVICE_ATTR(register_write, 0664, NULL,sx933x_register_write_store);
+static DEVICE_ATTR(register_read,0664, NULL,sx933x_register_read_store);
+static DEVICE_ATTR(raw_data,0664,sx933x_raw_data_show,NULL);
+
+static struct attribute *sx933x_attributes[] =
+{
+ &dev_attr_manual_calibrate.attr,
+ &dev_attr_register_write.attr,
+ &dev_attr_register_read.attr,
+ &dev_attr_raw_data.attr,
+ NULL,
+};
+static struct attribute_group sx933x_attr_group =
+{
+ .attrs = sx933x_attributes,
+};
+
+/**************************************/
+
+/*! \brief Initialize I2C config from platform data
+ * \param this Pointer to main parent struct
+ */
+static void sx933x_reg_init(psx93XX_t this)
+{
+ psx933x_t pDevice = 0;
+ psx933x_platform_data_t pdata = 0;
+ int i = 0;
+ uint32_t tmpvalue;
+ /* configure device */
+ if (this && (pDevice = this->pDevice) && (pdata = pDevice->hw))
+ {
+ /*******************************************************************************/
+ // try to initialize from device tree!
+ /*******************************************************************************/
+ while ( i < ARRAY_SIZE(sx933x_i2c_reg_setup))
+ {
+ /* Write all registers/values contained in i2c_reg */
+ LOG_DBG("Going to Write Reg: 0x%x Value: 0x%x\n",
+ sx933x_i2c_reg_setup[i].reg,sx933x_i2c_reg_setup[i].val);
+ tmpvalue = sx933x_i2c_reg_setup[i].val;
+ if (sx933x_i2c_reg_setup[i].reg == SX933X_GNRLCTRL2_REG)
+ {
+ if((sx933x_i2c_reg_setup[i].val & 0x3F) == 0)
+ {
+ tmpvalue = (sx933x_i2c_reg_setup[i].val|0x3F);
+ }
+ }
+ sx933x_i2c_write_16bit(this, sx933x_i2c_reg_setup[i].reg, tmpvalue);
+ i++;
+ }
+#ifdef USE_DTS_REG
+ if (this->reg_in_dts == true)
+ {
+ i = 0;
+ while ( i < pdata->i2c_reg_num)
+ {
+ /* Write all registers/values contained in i2c_reg */
+ LOG_DBG("Going to Write Reg from dts: 0x%x Value: 0x%x\n",
+ pdata->pi2c_reg[i].reg,pdata->pi2c_reg[i].val);
+ sx933x_i2c_write_16bit(this, pdata->pi2c_reg[i].reg,pdata->pi2c_reg[i].val);
+ i++;
+ }
+ }
+#endif
+ /*******************************************************************************/
+ sx933x_i2c_write_16bit(this, SX933X_CMD_REG,SX933X_PHASE_CONTROL); //enable phase control
+ }
+ else {
+ LOG_DBG("ERROR! platform data 0x%p\n",pDevice->hw);
+ }
+
+}
+
+
+/*! \fn static int initialize(psx93XX_t this)
+ * \brief Performs all initialization needed to configure the device
+ * \param this Pointer to main parent struct
+ * \return Last used command's return value (negative if error)
+ */
+static int initialize(psx93XX_t this)
+{
+ int ret, retry;
+ if (this)
+ {
+ LOG_DBG("SX933x income initialize\n");
+ /* prepare reset by disabling any irq handling */
+ this->irq_disabled = 1;
+ disable_irq(this->irq);
+ /* perform a reset */
+ for ( retry = 10; retry > 0; retry-- ) {
+ if (sx933x_i2c_write_16bit(this, SX933X_RESET_REG, I2C_SOFTRESET_VALUE) >= 0)
+ break;
+ LOG_DBG("SX933x write SX933X_RESET_REG retry:%d\n", 11 - retry);
+ msleep(10);
+ }
+ /* wait until the reset has finished by monitoring NIRQ */
+ LOG_DBG("Sent Software Reset. Waiting until device is back from reset to continue.\n");
+ /* just sleep for awhile instead of using a loop with reading irq status */
+ msleep(100);
+ ret = sx933x_global_variable_init(this);
+ sx933x_reg_init(this);
+ msleep(100); /* make sure everything is running */
+ manual_offset_calibration(this);
+
+ /* re-enable interrupt handling */
+ enable_irq(this->irq);
+
+ /* make sure no interrupts are pending since enabling irq will only
+ * work on next falling edge */
+ read_regStat(this);
+ return 0;
+ }
+ return -ENOMEM;
+}
+
+/*!
+ * \brief Handle what to do when a touch occurs
+ * \param this Pointer to main parent struct
+ */
+static void touchProcess(psx93XX_t this)
+{
+ int counter = 0;
+ u32 i = 0;
+ u32 touchFlag = 0;
+ int numberOfButtons = 0;
+ psx933x_t pDevice = NULL;
+ struct _buttonInfo *buttons = NULL;
+ struct input_dev *input = NULL;
+
+ struct _buttonInfo *pCurrentButton = NULL;
+
+ if (this && (pDevice = this->pDevice))
+ {
+ sx933x_i2c_read_16bit(this, SX933X_STAT0_REG, &i);
+ LOG_DBG("touchProcess STAT0_REG:0x%08x\n", i);
+
+ buttons = pDevice->pbuttonInformation->buttons;
+ numberOfButtons = pDevice->pbuttonInformation->buttonSize;
+
+ if (unlikely( buttons==NULL ))
+ {
+ LOG_DBG(":ERROR!! buttons NULL!!!\n");
+ return;
+ }
+
+ for (counter = 0; counter < numberOfButtons; counter++)
+ {
+ if (buttons[counter].enabled == false) {
+ LOG_INFO("touchProcess %s disabled, ignor this\n", buttons[counter].name);
+ continue;
+ }
+ if (buttons[counter].used== false) {
+ LOG_INFO("touchProcess %s unused, ignor this\n", buttons[counter].name);
+ continue;
+ }
+ pCurrentButton = &buttons[counter];
+ if (pCurrentButton==NULL)
+ {
+ LOG_DBG("ERROR!! current button at index: %d NULL!!!\n", counter);
+ return; // ERRORR!!!!
+ }
+ input = pCurrentButton->input_dev;
+ if (input==NULL)
+ {
+ LOG_DBG("ERROR!! current button input at index: %d NULL!!!\n", counter);
+ return; // ERRORR!!!!
+ }
+
+ touchFlag = i & (pCurrentButton->ProxMask | pCurrentButton->BodyMask);
+ if (touchFlag == (pCurrentButton->ProxMask | pCurrentButton->BodyMask)) {
+ if (pCurrentButton->state == BODYACTIVE)
+ LOG_DBG(" %s already BODYACTIVE\n", pCurrentButton->name);
+ else {
+ input_report_abs(input, ABS_DISTANCE, 2);
+ input_sync(input);
+ pCurrentButton->state = BODYACTIVE;
+ LOG_DBG(" %s report 5mm BODYACTIVE\n", pCurrentButton->name);
+ }
+ } else if (touchFlag == pCurrentButton->ProxMask) {
+ if (pCurrentButton->state == PROXACTIVE)
+ LOG_DBG(" %s already PROXACTIVE\n", pCurrentButton->name);
+ else {
+ input_report_abs(input, ABS_DISTANCE, 1);
+ input_sync(input);
+ pCurrentButton->state = PROXACTIVE;
+ LOG_DBG(" %s report 15mm PROXACTIVE\n", pCurrentButton->name);
+ }
+ }else if (touchFlag == 0) {
+ if (pCurrentButton->state == IDLE)
+ LOG_DBG("%s already released.\n", pCurrentButton->name);
+ else {
+ input_report_abs(input, ABS_DISTANCE, 0);
+ input_sync(input);
+ pCurrentButton->state = IDLE;
+ LOG_DBG("%s report released.\n", pCurrentButton->name);
+ }
+ }
+ }
+ LOG_INFO("Leaving touchProcess()\n");
+ }
+}
+
+static int sx933x_parse_dt(struct sx933x_platform_data *pdata, struct device *dev)
+{
+ struct device_node *dNode = dev->of_node;
+ enum of_gpio_flags flags;
+
+ if (dNode == NULL)
+ return -ENODEV;
+
+ pdata->irq_gpio= of_get_named_gpio_flags(dNode,
+ "Semtech,nirq-gpio", 0, &flags);
+ irq_gpio_num = pdata->irq_gpio;
+ if (pdata->irq_gpio < 0)
+ {
+ LOG_DBG("%s - get irq_gpio error\n", __func__);
+ return -ENODEV;
+ }
+
+ pdata->button_used_flag = 0;
+ of_property_read_u32(dNode,"Semtech,button-flag",&pdata->button_used_flag);
+ LOG_INFO("%s - used button 0x%x \n", __func__, pdata->button_used_flag);
+
+#ifdef USE_DTS_REG
+ // load in registers from device tree
+ of_property_read_u32(dNode,"Semtech,reg-num",&pdata->i2c_reg_num);
+ // layout is register, value, register, value....
+ // if an extra item is after just ignore it. reading the array in will cause it to fail anyway
+ LOG_INFO("%s - size of elements %d \n", __func__,pdata->i2c_reg_num);
+ if (pdata->i2c_reg_num > 0)
+ {
+ // initialize platform reg data array
+ pdata->pi2c_reg = devm_kzalloc(dev,sizeof(struct smtc_reg_data)*pdata->i2c_reg_num, GFP_KERNEL);
+ if (unlikely(pdata->pi2c_reg == NULL))
+ {
+ LOG_DBG("%s - size of elements %d alloc error\n", __func__,pdata->i2c_reg_num);
+ return -ENOMEM;
+ }
+
+ // initialize the array
+ if (of_property_read_u32_array(dNode,"Semtech,reg-init",(u32*)&(pdata->pi2c_reg[0]),sizeof(struct smtc_reg_data)*pdata->i2c_reg_num/sizeof(u32)))
+ return -ENOMEM;
+ }
+#endif
+ LOG_INFO("%s -[%d] parse_dt complete\n", __func__,pdata->irq_gpio);
+ return 0;
+}
+
+/* get the NIRQ state (1->NIRQ-low, 0->NIRQ-high) */
+static int sx933x_init_platform_hw(struct i2c_client *client)
+{
+ psx93XX_t this = i2c_get_clientdata(client);
+ struct sx933x *pDevice = NULL;
+ struct sx933x_platform_data *pdata = NULL;
+
+ int rc = 0;
+
+ LOG_INFO("%s init_platform_hw start!",__func__);
+
+ if (this && (pDevice = this->pDevice) && (pdata = pDevice->hw))
+ {
+ if (gpio_is_valid(pdata->irq_gpio))
+ {
+ rc = gpio_request(pdata->irq_gpio, "sx933x_irq_gpio");
+ if (rc < 0)
+ {
+ LOG_DBG("SX933x Request gpio. Fail![%d]\n", rc);
+ return rc;
+ }
+ rc = gpio_direction_input(pdata->irq_gpio);
+ if (rc < 0)
+ {
+ LOG_DBG("SX933x Set gpio direction. Fail![%d]\n", rc);
+ return rc;
+ }
+ this->irq = client->irq = gpio_to_irq(pdata->irq_gpio);
+ }
+ else
+ {
+ LOG_DBG("SX933x Invalid irq gpio num.(init)\n");
+ }
+ }
+ else
+ {
+ LOG_DBG("%s - Do not init platform HW", __func__);
+ }
+ return rc;
+}
+
+static void sx933x_exit_platform_hw(struct i2c_client *client)
+{
+ psx93XX_t this = i2c_get_clientdata(client);
+ struct sx933x *pDevice = NULL;
+ struct sx933x_platform_data *pdata = NULL;
+
+ if (this && (pDevice = this->pDevice) && (pdata = pDevice->hw))
+ {
+ if (gpio_is_valid(pdata->irq_gpio))
+ {
+ gpio_free(pdata->irq_gpio);
+ }
+ else
+ {
+ LOG_DBG("Invalid irq gpio num.(exit)\n");
+ }
+ }
+ return;
+}
+
+static int capsensor_set_enable(struct sensors_classdev *sensors_cdev,
+ unsigned int enable)
+{
+ bool disableFlag = true;
+ int i = 0;
+ u32 temp = 0x0;
+
+ for (i = 0; i < ARRAY_SIZE(psmtcButtons); i++) {
+ if (strcmp(sensors_cdev->name, psmtcButtons[i].name) == 0) {
+ if (enable == 1) {
+ LOG_DBG("enable cap sensor : %s\n", sensors_cdev->name);
+ sx933x_i2c_read_16bit(global_sx933x, SX933X_GNRLCTRL2_REG, &temp);
+ temp = temp | 0x0000001F;
+ LOG_INFO("set reg 0x%x val 0x%x\n", SX933X_GNRLCTRL2_REG, temp);
+ sx933x_i2c_write_16bit(global_sx933x, SX933X_GNRLCTRL2_REG, temp);
+ psmtcButtons[i].enabled = true;
+ input_report_abs(psmtcButtons[i].input_dev, ABS_DISTANCE, 0);
+ input_sync(psmtcButtons[i].input_dev);
+
+ manual_offset_calibration(global_sx933x);
+ } else if (enable == 0) {
+ LOG_DBG("disable cap sensor : %s\n", sensors_cdev->name);
+ psmtcButtons[i].enabled = false;
+ input_report_abs(psmtcButtons[i].input_dev, ABS_DISTANCE, -1);
+ input_sync(psmtcButtons[i].input_dev);
+ } else {
+ LOG_DBG("unknown enable symbol\n");
+ }
+ }
+ }
+
+ //if all chs disabled, then disable all
+ for (i = 0; i < ARRAY_SIZE(psmtcButtons); i++) {
+ if (psmtcButtons[i].enabled) {
+ disableFlag = false;
+ break;
+ }
+ }
+ if (disableFlag) {
+ LOG_DBG("disable all chs\n");
+ sx933x_i2c_read_16bit(global_sx933x, SX933X_GNRLCTRL2_REG, &temp);
+ LOG_INFO("read reg 0x%x val 0x%x\n", SX933X_GNRLCTRL2_REG, temp);
+ temp = temp & 0xFFFFFFE0;
+ LOG_INFO("set reg 0x%x val 0x%x\n", SX933X_GNRLCTRL2_REG, temp);
+ sx933x_i2c_write_16bit(global_sx933x, SX933X_GNRLCTRL2_REG, temp);
+ }
+ return 0;
+}
+
+/*! \fn static int sx933x_probe(struct i2c_client *client, const struct i2c_device_id *id)
+ * \brief Probe function
+ * \param client pointer to i2c_client
+ * \param id pointer to i2c_device_id
+ * \return Whether probe was successful
+ */
+static int sx933x_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ int i = 0;
+ int err = 0;
+
+ psx93XX_t this = 0;
+ psx933x_t pDevice = 0;
+ psx933x_platform_data_t pplatData = 0;
+ struct totalButtonInformation *pButtonInformationData = NULL;
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+
+ LOG_DBG("sx933x_probe()\n");
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_READ_WORD_DATA))
+ {
+ LOG_DBG("Check i2c functionality.Fail!\n");
+ err = -EIO;
+ return err;
+ }
+
+ this = devm_kzalloc(&client->dev,sizeof(sx93XX_t), GFP_KERNEL); /* create memory for main struct */
+ LOG_DBG("Initialized Main Memory: 0x%p\n",this);
+
+ pButtonInformationData = devm_kzalloc(&client->dev , sizeof(struct totalButtonInformation), GFP_KERNEL);
+ if (!pButtonInformationData)
+ {
+ LOG_DBG("Failed to allocate memory(totalButtonInformation)\n");
+ err = -ENOMEM;
+ return err;
+ }
+
+ pButtonInformationData->buttonSize = ARRAY_SIZE(psmtcButtons);
+ pButtonInformationData->buttons = psmtcButtons;
+ pplatData = devm_kzalloc(&client->dev,sizeof(struct sx933x_platform_data), GFP_KERNEL);
+ if (!pplatData)
+ {
+ LOG_DBG("platform data is required!\n");
+ return -EINVAL;
+ }
+ pplatData->get_is_nirq_low = sx933x_get_nirq_state;
+ pplatData->pbuttonInformation = pButtonInformationData;
+
+ client->dev.platform_data = pplatData;
+ err = sx933x_parse_dt(pplatData, &client->dev);
+ if (err)
+ {
+ LOG_DBG("could not setup pin\n");
+ return ENODEV;
+ }
+
+ pplatData->init_platform_hw = sx933x_init_platform_hw;
+ LOG_INFO("SX933x init_platform_hw done!\n");
+
+ if (this)
+ {
+ LOG_INFO("SX933x initialize start!!");
+ /* In case we need to reinitialize data
+ * (e.q. if suspend reset device) */
+ this->init = initialize;
+ /* shortcut to read status of interrupt */
+ this->refreshStatus = read_regStat;
+ /* pointer to function from platform data to get pendown
+ * (1->NIRQ=0, 0->NIRQ=1) */
+ this->get_nirq_low = pplatData->get_is_nirq_low;
+ /* save irq in case we need to reference it */
+ this->irq = client->irq;
+ /* do we need to create an irq timer after interrupt ? */
+ this->useIrqTimer = 0;
+
+ /* Setup function to call on corresponding reg irq source bit */
+ if (MAX_NUM_STATUS_BITS>= 8)
+ {
+ this->statusFunc[0] = 0; /* TXEN_STAT */
+ this->statusFunc[1] = 0; /* UNUSED */
+ this->statusFunc[2] = touchProcess; /* body&table */
+ this->statusFunc[3] = read_rawData; /* CONV_STAT */
+ this->statusFunc[4] = 0; /* COMP_STAT */
+ this->statusFunc[5] = touchProcess; /* RELEASE_STAT */
+ this->statusFunc[6] = touchProcess; /* TOUCH_STAT */
+ this->statusFunc[7] = 0; /* RESET_STAT */
+ }
+
+ /* setup i2c communication */
+ this->bus = client;
+ i2c_set_clientdata(client, this);
+
+ /* record device struct */
+ this->pdev = &client->dev;
+
+ /* create memory for device specific struct */
+ this->pDevice = pDevice = devm_kzalloc(&client->dev,sizeof(sx933x_t), GFP_KERNEL);
+ LOG_INFO("initialized Device Specific Memory: 0x%p\n",pDevice);
+
+ if (pDevice)
+ {
+ /* for accessing items in user data (e.g. calibrate) */
+ err = sysfs_create_group(&client->dev.kobj, &sx933x_attr_group);
+ //sysfs_create_group(client, &sx933x_attr_group);
+
+ /* Add Pointer to main platform data struct */
+ pDevice->hw = pplatData;
+
+ /* Check if we hava a platform initialization function to call*/
+ if (pplatData->init_platform_hw)
+ pplatData->init_platform_hw(client);
+
+ /* Initialize the button information initialized with keycodes */
+ pDevice->pbuttonInformation = pplatData->pbuttonInformation;
+
+ for (i = 0; i < pButtonInformationData->buttonSize; i++)
+ {
+ if (pplatData->button_used_flag>>i & 0x01) {
+ pButtonInformationData->buttons[i].used = true;
+ pButtonInformationData->buttons[i].state = IDLE;
+ pButtonInformationData->buttons[i].input_dev = input_allocate_device();
+ if (!pButtonInformationData->buttons[i].input_dev)
+ return -ENOMEM;
+ pButtonInformationData->buttons[i].input_dev->name = pButtonInformationData->buttons[i].name;
+ /* Set all the keycodes */
+ __set_bit(EV_ABS, pButtonInformationData->buttons[i].input_dev->evbit);
+ input_set_abs_params(pButtonInformationData->buttons[i].input_dev, ABS_DISTANCE, -1, 100, 0, 0);
+
+ err = input_register_device(pButtonInformationData->buttons[i].input_dev);
+ /* report a unused val, then first val will report after enable */
+ input_report_abs(pButtonInformationData->buttons[i].input_dev, ABS_DISTANCE, -1);
+ input_sync(pButtonInformationData->buttons[i].input_dev);
+
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.sensors_enable = capsensor_set_enable;
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.sensors_poll_delay = NULL;
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.name = pButtonInformationData->buttons[i].name;
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.vendor = "semtech";
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.version = 1;
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.type = SENSOR_TYPE_MOTO_CAPSENSE;
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.max_range = "5";
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.resolution = "5.0";
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.sensor_power = "3";
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.min_delay = 0;
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.fifo_reserved_event_count = 0;
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.fifo_max_event_count = 0;
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.delay_msec = 100;
+ pButtonInformationData->buttons[i].sensors_capsensor_cdev.enabled = 0;
+ pButtonInformationData->buttons[i].enabled = false;
+
+ err = sensors_classdev_register(&pButtonInformationData->buttons[i].input_dev->dev, &pButtonInformationData->buttons[i].sensors_capsensor_cdev);
+ if (err < 0)
+ LOG_DBG("create %d cap sensor_class file failed (%d)\n", i, err);
+ }
+ }
+ }
+
+ pplatData->cap_vdd = regulator_get(&client->dev, "cap_vdd");
+
+ if (IS_ERR(pplatData->cap_vdd)) {
+ if (PTR_ERR(pplatData->cap_vdd) == -EPROBE_DEFER) {
+ err = PTR_ERR(pplatData->cap_vdd);
+ return err;
+ }
+ LOG_DBG("%s: Failed to get regulator\n",
+ __func__);
+ } else {
+ err = regulator_enable(pplatData->cap_vdd);
+ if (err) {
+ regulator_put(pplatData->cap_vdd);
+ LOG_DBG("%s: Error %d enable regulator\n",
+ __func__, err);
+ return err;
+ }
+ pplatData->cap_vdd_en = true;
+ LOG_DBG("cap_vdd regulator is %s\n",
+ regulator_is_enabled(pplatData->cap_vdd) ?
+ "on" : "off");
+ }
+ sx93XX_IRQ_init(this);
+ /* call init function pointer (this should initialize all registers */
+ if (this->init) {
+ this->init(this);
+ }
+ else {
+ LOG_DBG("No init function!!!!\n");
+ return -ENOMEM;
+ }
+ } else {
+ return -1;
+ }
+
+ pplatData->exit_platform_hw = sx933x_exit_platform_hw;
+
+ if (sx933x_Hardware_Check(this) != 0) {
+ LOG_DBG("sx933x_Hardware_CheckFail!\n");
+ //return -1;
+ }
+
+ global_sx933x = this;
+ LOG_INFO("sx933x_probe() Done\n");
+ return 0;
+}
+
+/*! \fn static int sx933x_remove(struct i2c_client *client)
+ * \brief Called when device is to be removed
+ * \param client Pointer to i2c_client struct
+ * \return Value 0
+ */
+//static int __devexit sx933x_remove(struct i2c_client *client)
+static int sx933x_remove(struct i2c_client *client)
+{
+ psx933x_platform_data_t pplatData =0;
+ psx933x_t pDevice = 0;
+ struct _buttonInfo *pCurrentbutton;
+ int i = 0;
+ psx93XX_t this = i2c_get_clientdata(client);
+ LOG_DBG("sx933x_remove");
+ if (this && (pDevice = this->pDevice))
+ {
+ free_irq(this->irq, this);
+ cancel_delayed_work_sync(&(this->dworker));
+
+ sysfs_remove_group(&client->dev.kobj, &sx933x_attr_group);
+ pplatData = client->dev.platform_data;
+ if (pplatData && pplatData->exit_platform_hw)
+ pplatData->exit_platform_hw(client);
+ if (pplatData->cap_vdd_en) {
+ regulator_disable(pplatData->cap_vdd);
+ regulator_put(pplatData->cap_vdd);
+ }
+ for (i = 0; i <pDevice->pbuttonInformation->buttonSize; i++) {
+ pCurrentbutton = &(pDevice->pbuttonInformation->buttons[i]);
+ if (pCurrentbutton->used == true) {
+ sensors_classdev_unregister(&(pCurrentbutton->sensors_capsensor_cdev));
+ input_unregister_device(pCurrentbutton->input_dev);
+ }
+ }
+ }
+ return 0;
+}
+
+
+#if 1//def CONFIG_PM
+/*====================================================*/
+/***** Kernel Suspend *****/
+static int sx933x_suspend(struct device *dev)
+{
+ psx93XX_t this = dev_get_drvdata(dev);
+ if (this) {
+ disable_irq(this->irq);
+ //sx933x_i2c_write_16bit(this,SX933X_CPS_CTRL0_REG,0x20);//make sx933x in Sleep mode
+ }
+ return 0;
+}
+/***** Kernel Resume *****/
+static int sx933x_resume(struct device *dev)
+{
+ psx93XX_t this = dev_get_drvdata(dev);
+ if (this) {
+ enable_irq(this->irq);
+ //sx933x_i2c_write_16bit(this,SX933X_CPS_CTRL0_REG,0x27);//Exit from Sleep mode
+ }
+ return 0;
+}
+/*====================================================*/
+#else
+#define sx933x_suspend NULL
+#define sx933x_resume NULL
+#endif /* CONFIG_PM */
+
+static struct i2c_device_id sx933x_idtable[] =
+{
+ { DRIVER_NAME, 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, sx933x_idtable);
+#ifdef CONFIG_OF
+static struct of_device_id sx933x_match_table[] =
+{
+ { .compatible = "Semtech,sx933x",},
+ { },
+};
+#else
+#define sx933x_match_table NULL
+#endif
+static const struct dev_pm_ops sx933x_pm_ops =
+{
+ .suspend = sx933x_suspend,
+ .resume = sx933x_resume,
+};
+static struct i2c_driver sx933x_driver =
+{
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = DRIVER_NAME,
+ .of_match_table = sx933x_match_table,
+ .pm = &sx933x_pm_ops,
+ },
+ .id_table = sx933x_idtable,
+ .probe = sx933x_probe,
+ .remove = sx933x_remove,
+};
+static int __init sx933x_I2C_init(void)
+{
+ return i2c_add_driver(&sx933x_driver);
+}
+static void __exit sx933x_I2C_exit(void)
+{
+ i2c_del_driver(&sx933x_driver);
+}
+
+module_init(sx933x_I2C_init);
+module_exit(sx933x_I2C_exit);
+
+MODULE_AUTHOR("Semtech Corp. (http://www.semtech.com/)");
+MODULE_DESCRIPTION("SX933x Capacitive Proximity Controller Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1");
+
+static void sx93XX_schedule_work(psx93XX_t this, unsigned long delay)
+{
+ unsigned long flags;
+ if (this)
+ {
+ LOG_INFO("sx93XX_schedule_work()\n");
+ spin_lock_irqsave(&this->lock,flags);
+ /* Stop any pending penup queues */
+ cancel_delayed_work(&this->dworker);
+ //after waiting for a delay, this put the job in the kernel-global workqueue. so no need to create new thread in work queue.
+ schedule_delayed_work(&this->dworker,delay);
+ spin_unlock_irqrestore(&this->lock,flags);
+ }
+ else
+ LOG_DBG("sx93XX_schedule_work, NULL psx93XX_t\n");
+}
+
+static irqreturn_t sx93XX_irq(int irq, void *pvoid)
+{
+ psx93XX_t this = 0;
+ if (pvoid)
+ {
+ this = (psx93XX_t)pvoid;
+ if ((!this->get_nirq_low) || this->get_nirq_low())
+ {
+ LOG_INFO("sx93XX_irq - call sx93XX_schedule_work\n");
+ sx93XX_schedule_work(this,0);
+ }
+ else
+ {
+ LOG_DBG("sx93XX_irq - nirq read high\n");
+ }
+ }
+ else
+ {
+ LOG_DBG("sx93XX_irq, NULL pvoid\n");
+ }
+ return IRQ_HANDLED;
+}
+
+static void sx93XX_worker_func(struct work_struct *work)
+{
+ psx93XX_t this = 0;
+ int status = 0;
+ int counter = 0;
+ u8 nirqLow = 0;
+ if (work)
+ {
+ this = container_of(work,sx93XX_t,dworker.work);
+
+ if (!this)
+ {
+ LOG_DBG("sx93XX_worker_func, NULL sx93XX_t\n");
+ return;
+ }
+ if (unlikely(this->useIrqTimer))
+ {
+ if ((!this->get_nirq_low) || this->get_nirq_low())
+ {
+ nirqLow = 1;
+ }
+ }
+ /* since we are not in an interrupt don't need to disable irq. */
+ status = this->refreshStatus(this);
+ counter = -1;
+ LOG_INFO("Worker_func - Refresh Status %d, use_timer_in_irq:%d\n", status, this->useIrqTimer);
+
+ while((++counter) < MAX_NUM_STATUS_BITS) /* counter start from MSB */
+ {
+ if (((status>>counter) & 0x01) && (this->statusFunc[counter]))
+ {
+ LOG_INFO("SX933x Function Pointer Found. Calling\n");
+ this->statusFunc[counter](this);
+ }
+ }
+ if (unlikely(this->useIrqTimer && nirqLow))
+ {
+ /* Early models and if RATE=0 for newer models require a penup timer */
+ /* Queue up the function again for checking on penup */
+ sx93XX_schedule_work(this,msecs_to_jiffies(this->irqTimeout));
+ }
+ }
+ else
+ {
+ LOG_DBG("sx93XX_worker_func, NULL work_struct\n");
+ }
+}
+
+int sx93XX_IRQ_init(psx93XX_t this)
+{
+ int err = 0;
+ if (this && this->pDevice)
+ {
+ /* initialize spin lock */
+ spin_lock_init(&this->lock);
+ /* initialize worker function */
+ INIT_DELAYED_WORK(&this->dworker, sx93XX_worker_func);
+ /* initailize interrupt reporting */
+ this->irq_disabled = 0;
+ err = request_irq(this->irq, sx93XX_irq, IRQF_TRIGGER_FALLING,
+ this->pdev->driver->name, this);
+ if (err)
+ {
+ LOG_DBG("irq %d busy?\n", this->irq);
+ return err;
+ }
+ LOG_DBG("registered with irq (%d)\n", this->irq);
+ }
+ return -ENOMEM;
+}
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff