^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) // extcon-max8997.c - MAX8997 extcon driver to support MAX8997 MUIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // Copyright (C) 2012 Samsung Electronics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) // Donggeun Kim <dg77.kim@samsung.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/kobject.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/mfd/max8997.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/mfd/max8997-private.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/extcon-provider.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/irqdomain.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define DEV_NAME "max8997-muic"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) enum max8997_muic_adc_debounce_time {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) ADC_DEBOUNCE_TIME_0_5MS = 0, /* 0.5ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) ADC_DEBOUNCE_TIME_10MS, /* 10ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) ADC_DEBOUNCE_TIME_25MS, /* 25ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) ADC_DEBOUNCE_TIME_38_62MS, /* 38.62ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct max8997_muic_irq {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) unsigned int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) unsigned int virq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static struct max8997_muic_irq muic_irqs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) { MAX8997_MUICIRQ_ADCError, "muic-ADCERROR" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) { MAX8997_MUICIRQ_ADCLow, "muic-ADCLOW" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) { MAX8997_MUICIRQ_ADC, "muic-ADC" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) { MAX8997_MUICIRQ_VBVolt, "muic-VBVOLT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) { MAX8997_MUICIRQ_DBChg, "muic-DBCHG" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) { MAX8997_MUICIRQ_DCDTmr, "muic-DCDTMR" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) { MAX8997_MUICIRQ_ChgDetRun, "muic-CHGDETRUN" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) { MAX8997_MUICIRQ_ChgTyp, "muic-CHGTYP" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) { MAX8997_MUICIRQ_OVP, "muic-OVP" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /* Define supported cable type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) enum max8997_muic_acc_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) MAX8997_MUIC_ADC_GROUND = 0x0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) MAX8997_MUIC_ADC_MHL, /* MHL*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) MAX8997_MUIC_ADC_REMOTE_S1_BUTTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) MAX8997_MUIC_ADC_REMOTE_S2_BUTTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) MAX8997_MUIC_ADC_REMOTE_S3_BUTTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) MAX8997_MUIC_ADC_REMOTE_S4_BUTTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) MAX8997_MUIC_ADC_REMOTE_S5_BUTTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) MAX8997_MUIC_ADC_REMOTE_S6_BUTTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) MAX8997_MUIC_ADC_REMOTE_S7_BUTTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) MAX8997_MUIC_ADC_REMOTE_S8_BUTTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) MAX8997_MUIC_ADC_REMOTE_S9_BUTTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) MAX8997_MUIC_ADC_REMOTE_S10_BUTTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) MAX8997_MUIC_ADC_REMOTE_S11_BUTTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) MAX8997_MUIC_ADC_REMOTE_S12_BUTTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) MAX8997_MUIC_ADC_RESERVED_ACC_1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) MAX8997_MUIC_ADC_RESERVED_ACC_2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) MAX8997_MUIC_ADC_RESERVED_ACC_3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) MAX8997_MUIC_ADC_RESERVED_ACC_4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) MAX8997_MUIC_ADC_RESERVED_ACC_5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) MAX8997_MUIC_ADC_CEA936_AUDIO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) MAX8997_MUIC_ADC_PHONE_POWERED_DEV,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) MAX8997_MUIC_ADC_TTY_CONVERTER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) MAX8997_MUIC_ADC_UART_CABLE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) MAX8997_MUIC_ADC_CEA936A_TYPE1_CHG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) MAX8997_MUIC_ADC_FACTORY_MODE_USB_OFF, /* JIG-USB-OFF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) MAX8997_MUIC_ADC_FACTORY_MODE_USB_ON, /* JIG-USB-ON */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) MAX8997_MUIC_ADC_AV_CABLE_NOLOAD, /* DESKDOCK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) MAX8997_MUIC_ADC_CEA936A_TYPE2_CHG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) MAX8997_MUIC_ADC_FACTORY_MODE_UART_OFF, /* JIG-UART */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON, /* CARDOCK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) MAX8997_MUIC_ADC_AUDIO_MODE_REMOTE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) MAX8997_MUIC_ADC_OPEN, /* OPEN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) enum max8997_muic_cable_group {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) MAX8997_CABLE_GROUP_ADC = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) MAX8997_CABLE_GROUP_ADC_GND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) MAX8997_CABLE_GROUP_CHG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) MAX8997_CABLE_GROUP_VBVOLT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) enum max8997_muic_usb_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) MAX8997_USB_HOST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) MAX8997_USB_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) enum max8997_muic_charger_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) MAX8997_CHARGER_TYPE_NONE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) MAX8997_CHARGER_TYPE_USB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) MAX8997_CHARGER_TYPE_DEDICATED_CHG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) MAX8997_CHARGER_TYPE_500MA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) MAX8997_CHARGER_TYPE_1A,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) MAX8997_CHARGER_TYPE_DEAD_BATTERY = 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct max8997_muic_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct i2c_client *muic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct extcon_dev *edev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) int prev_cable_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) int prev_chg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) u8 status[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct work_struct irq_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct mutex mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct max8997_muic_platform_data *muic_pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) enum max8997_muic_charger_type pre_charger_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * Use delayed workqueue to detect cable state and then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * notify cable state to notifiee/platform through uevent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * After completing the booting of platform, the extcon provider
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * driver should notify cable state to upper layer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct delayed_work wq_detcable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * h/w path of COMP2/COMN1 on CONTROL1 register.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int path_usb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) int path_uart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static const unsigned int max8997_extcon_cable[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) EXTCON_USB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) EXTCON_USB_HOST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) EXTCON_CHG_USB_SDP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) EXTCON_CHG_USB_DCP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) EXTCON_CHG_USB_FAST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) EXTCON_CHG_USB_SLOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) EXTCON_CHG_USB_CDP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) EXTCON_DISP_MHL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) EXTCON_DOCK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) EXTCON_JIG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) EXTCON_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * max8997_muic_set_debounce_time - Set the debounce time of ADC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * @info: the instance including private data of max8997 MUIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * @time: the debounce time of ADC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static int max8997_muic_set_debounce_time(struct max8997_muic_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) enum max8997_muic_adc_debounce_time time)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) switch (time) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) case ADC_DEBOUNCE_TIME_0_5MS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) case ADC_DEBOUNCE_TIME_10MS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) case ADC_DEBOUNCE_TIME_25MS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) case ADC_DEBOUNCE_TIME_38_62MS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) ret = max8997_update_reg(info->muic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) MAX8997_MUIC_REG_CONTROL3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) time << CONTROL3_ADCDBSET_SHIFT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) CONTROL3_ADCDBSET_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) dev_err(info->dev, "failed to set ADC debounce time\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) dev_err(info->dev, "invalid ADC debounce time\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * max8997_muic_set_path - Set hardware line according to attached cable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * @info: the instance including private data of max8997 MUIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * @value: the path according to attached cable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * @attached: the state of cable (true:attached, false:detached)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * The max8997 MUIC device share outside H/W line among a varity of cables,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * so this function set internal path of H/W line according to the type of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * attached cable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) static int max8997_muic_set_path(struct max8997_muic_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) u8 val, bool attached)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) u8 ctrl1, ctrl2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (attached)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) ctrl1 = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) ctrl1 = CONTROL1_SW_OPEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) ret = max8997_update_reg(info->muic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) MAX8997_MUIC_REG_CONTROL1, ctrl1, COMP_SW_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) dev_err(info->dev, "failed to update MUIC register\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (attached)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) ret = max8997_update_reg(info->muic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) MAX8997_MUIC_REG_CONTROL2, ctrl2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) dev_err(info->dev, "failed to update MUIC register\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) dev_info(info->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) ctrl1, ctrl2, attached ? "attached" : "detached");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * max8997_muic_get_cable_type - Return cable type and check cable state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * @info: the instance including private data of max8997 MUIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * @group: the path according to attached cable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) * @attached: store cable state and return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * This function check the cable state either attached or detached,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * and then divide precise type of cable according to cable group.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) * - MAX8997_CABLE_GROUP_ADC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * - MAX8997_CABLE_GROUP_CHG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) static int max8997_muic_get_cable_type(struct max8997_muic_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) enum max8997_muic_cable_group group, bool *attached)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) int cable_type = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) int adc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) int chg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) switch (group) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) case MAX8997_CABLE_GROUP_ADC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) * Read ADC value to check cable type and decide cable state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) * according to cable type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) adc = info->status[0] & STATUS1_ADC_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) adc >>= STATUS1_ADC_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) * Check current cable state/cable type and store cable type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) * (info->prev_cable_type) for handling cable when cable is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * detached.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if (adc == MAX8997_MUIC_ADC_OPEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) *attached = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) cable_type = info->prev_cable_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) info->prev_cable_type = MAX8997_MUIC_ADC_OPEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) *attached = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) cable_type = info->prev_cable_type = adc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) case MAX8997_CABLE_GROUP_CHG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * Read charger type to check cable type and decide cable state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * according to type of charger cable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) chg_type = info->status[1] & STATUS2_CHGTYP_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) chg_type >>= STATUS2_CHGTYP_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (chg_type == MAX8997_CHARGER_TYPE_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) *attached = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) cable_type = info->prev_chg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) info->prev_chg_type = MAX8997_CHARGER_TYPE_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) *attached = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) * Check current cable state/cable type and store cable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) * type(info->prev_chg_type) for handling cable when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) * charger cable is detached.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) cable_type = info->prev_chg_type = chg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) dev_err(info->dev, "Unknown cable group (%d)\n", group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) cable_type = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return cable_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) static int max8997_muic_handle_usb(struct max8997_muic_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) enum max8997_muic_usb_type usb_type, bool attached)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) ret = max8997_muic_set_path(info, info->path_usb, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) dev_err(info->dev, "failed to update muic register\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) switch (usb_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) case MAX8997_USB_HOST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) case MAX8997_USB_DEVICE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) extcon_set_state_sync(info->edev, EXTCON_USB, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) dev_err(info->dev, "failed to detect %s usb cable\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) attached ? "attached" : "detached");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) static int max8997_muic_handle_dock(struct max8997_muic_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) int cable_type, bool attached)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) ret = max8997_muic_set_path(info, CONTROL1_SW_AUDIO, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) dev_err(info->dev, "failed to update muic register\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) switch (cable_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) case MAX8997_MUIC_ADC_AV_CABLE_NOLOAD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) case MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) extcon_set_state_sync(info->edev, EXTCON_DOCK, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) dev_err(info->dev, "failed to detect %s dock device\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) attached ? "attached" : "detached");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static int max8997_muic_handle_jig_uart(struct max8997_muic_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) bool attached)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) /* switch to UART */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) ret = max8997_muic_set_path(info, info->path_uart, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) dev_err(info->dev, "failed to update muic register\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) extcon_set_state_sync(info->edev, EXTCON_JIG, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static int max8997_muic_adc_handler(struct max8997_muic_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) int cable_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) bool attached;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) /* Check cable state which is either detached or attached */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) cable_type = max8997_muic_get_cable_type(info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) MAX8997_CABLE_GROUP_ADC, &attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) switch (cable_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) case MAX8997_MUIC_ADC_GROUND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) ret = max8997_muic_handle_usb(info, MAX8997_USB_HOST, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) case MAX8997_MUIC_ADC_MHL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) case MAX8997_MUIC_ADC_FACTORY_MODE_USB_OFF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) case MAX8997_MUIC_ADC_FACTORY_MODE_USB_ON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) ret = max8997_muic_handle_usb(info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) MAX8997_USB_DEVICE, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) case MAX8997_MUIC_ADC_AV_CABLE_NOLOAD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) case MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) ret = max8997_muic_handle_dock(info, cable_type, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) case MAX8997_MUIC_ADC_FACTORY_MODE_UART_OFF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) ret = max8997_muic_handle_jig_uart(info, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) case MAX8997_MUIC_ADC_REMOTE_S1_BUTTON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) case MAX8997_MUIC_ADC_REMOTE_S2_BUTTON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) case MAX8997_MUIC_ADC_REMOTE_S3_BUTTON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) case MAX8997_MUIC_ADC_REMOTE_S4_BUTTON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) case MAX8997_MUIC_ADC_REMOTE_S5_BUTTON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) case MAX8997_MUIC_ADC_REMOTE_S6_BUTTON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) case MAX8997_MUIC_ADC_REMOTE_S7_BUTTON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) case MAX8997_MUIC_ADC_REMOTE_S8_BUTTON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) case MAX8997_MUIC_ADC_REMOTE_S9_BUTTON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) case MAX8997_MUIC_ADC_REMOTE_S10_BUTTON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) case MAX8997_MUIC_ADC_REMOTE_S11_BUTTON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) case MAX8997_MUIC_ADC_REMOTE_S12_BUTTON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) case MAX8997_MUIC_ADC_RESERVED_ACC_1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) case MAX8997_MUIC_ADC_RESERVED_ACC_2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) case MAX8997_MUIC_ADC_RESERVED_ACC_3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) case MAX8997_MUIC_ADC_RESERVED_ACC_4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) case MAX8997_MUIC_ADC_RESERVED_ACC_5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) case MAX8997_MUIC_ADC_CEA936_AUDIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) case MAX8997_MUIC_ADC_PHONE_POWERED_DEV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) case MAX8997_MUIC_ADC_TTY_CONVERTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) case MAX8997_MUIC_ADC_UART_CABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) case MAX8997_MUIC_ADC_CEA936A_TYPE1_CHG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) case MAX8997_MUIC_ADC_CEA936A_TYPE2_CHG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) case MAX8997_MUIC_ADC_AUDIO_MODE_REMOTE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) * This cable isn't used in general case if it is specially
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) * needed to detect additional cable, should implement
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) * proper operation when this cable is attached/detached.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) dev_info(info->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) "cable is %s but it isn't used (type:0x%x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) attached ? "attached" : "detached", cable_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) dev_err(info->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) "failed to detect %s unknown cable (type:0x%x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) attached ? "attached" : "detached", cable_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) static int max8997_muic_chg_handler(struct max8997_muic_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) int chg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) bool attached;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) int adc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) chg_type = max8997_muic_get_cable_type(info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) MAX8997_CABLE_GROUP_CHG, &attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) switch (chg_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) case MAX8997_CHARGER_TYPE_NONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) case MAX8997_CHARGER_TYPE_USB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) adc = info->status[0] & STATUS1_ADC_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) adc >>= STATUS1_ADC_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) if ((adc & STATUS1_ADC_MASK) == MAX8997_MUIC_ADC_OPEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) max8997_muic_handle_usb(info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) MAX8997_USB_DEVICE, attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) case MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) case MAX8997_CHARGER_TYPE_DEDICATED_CHG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) case MAX8997_CHARGER_TYPE_500MA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) case MAX8997_CHARGER_TYPE_1A:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) dev_err(info->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) "failed to detect %s unknown chg cable (type:0x%x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) attached ? "attached" : "detached", chg_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) static void max8997_muic_irq_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) struct max8997_muic_info *info = container_of(work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) struct max8997_muic_info, irq_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) int irq_type = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) if (!info->edev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) mutex_lock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) for (i = 0; i < ARRAY_SIZE(muic_irqs); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) if (info->irq == muic_irqs[i].virq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) irq_type = muic_irqs[i].irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) ret = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) 2, info->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) dev_err(info->dev, "failed to read muic register\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) mutex_unlock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) switch (irq_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) case MAX8997_MUICIRQ_ADCError:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) case MAX8997_MUICIRQ_ADCLow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) case MAX8997_MUICIRQ_ADC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) /* Handle all of cable except for charger cable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) ret = max8997_muic_adc_handler(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) case MAX8997_MUICIRQ_VBVolt:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) case MAX8997_MUICIRQ_DBChg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) case MAX8997_MUICIRQ_DCDTmr:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) case MAX8997_MUICIRQ_ChgDetRun:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) case MAX8997_MUICIRQ_ChgTyp:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) /* Handle charger cable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) ret = max8997_muic_chg_handler(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) case MAX8997_MUICIRQ_OVP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) dev_info(info->dev, "misc interrupt: irq %d occurred\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) irq_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) mutex_unlock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) dev_err(info->dev, "failed to handle MUIC interrupt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) mutex_unlock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) static irqreturn_t max8997_muic_irq_handler(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) struct max8997_muic_info *info = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) dev_dbg(info->dev, "irq:%d\n", irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) info->irq = irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) schedule_work(&info->irq_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) static int max8997_muic_detect_dev(struct max8997_muic_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) int adc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) int chg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) bool attached;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) mutex_lock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) /* Read STATUSx register to detect accessory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) ret = max8997_bulk_read(info->muic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) MAX8997_MUIC_REG_STATUS1, 2, info->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) dev_err(info->dev, "failed to read MUIC register\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) mutex_unlock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) adc = max8997_muic_get_cable_type(info, MAX8997_CABLE_GROUP_ADC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) &attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) if (attached && adc != MAX8997_MUIC_ADC_OPEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) ret = max8997_muic_adc_handler(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) dev_err(info->dev, "Cannot detect ADC cable\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) mutex_unlock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) chg_type = max8997_muic_get_cable_type(info, MAX8997_CABLE_GROUP_CHG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) &attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) if (attached && chg_type != MAX8997_CHARGER_TYPE_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) ret = max8997_muic_chg_handler(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) dev_err(info->dev, "Cannot detect charger cable\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) mutex_unlock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) mutex_unlock(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) static void max8997_muic_detect_cable_wq(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) struct max8997_muic_info *info = container_of(to_delayed_work(work),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) struct max8997_muic_info, wq_detcable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) ret = max8997_muic_detect_dev(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) dev_err(info->dev, "failed to detect cable type\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) static int max8997_muic_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) struct max8997_dev *max8997 = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) struct max8997_platform_data *pdata = dev_get_platdata(max8997->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) struct max8997_muic_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) int delay_jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) int cable_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) bool attached;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) info = devm_kzalloc(&pdev->dev, sizeof(struct max8997_muic_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) info->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) info->muic = max8997->muic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) platform_set_drvdata(pdev, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) mutex_init(&info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) INIT_WORK(&info->irq_work, max8997_muic_irq_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) struct max8997_muic_irq *muic_irq = &muic_irqs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) unsigned int virq = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) virq = irq_create_mapping(max8997->irq_domain, muic_irq->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) if (!virq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) goto err_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) muic_irq->virq = virq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) ret = request_threaded_irq(virq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) max8997_muic_irq_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) IRQF_NO_SUSPEND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) muic_irq->name, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) "failed: irq request (IRQ: %d, error :%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) muic_irq->irq, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) goto err_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) /* External connector */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) info->edev = devm_extcon_dev_allocate(&pdev->dev, max8997_extcon_cable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) if (IS_ERR(info->edev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) dev_err(&pdev->dev, "failed to allocate memory for extcon\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) ret = PTR_ERR(info->edev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) goto err_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) ret = devm_extcon_dev_register(&pdev->dev, info->edev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) dev_err(&pdev->dev, "failed to register extcon device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) goto err_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) if (pdata && pdata->muic_pdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) struct max8997_muic_platform_data *muic_pdata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) = pdata->muic_pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) /* Initialize registers according to platform data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) for (i = 0; i < muic_pdata->num_init_data; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) max8997_write_reg(info->muic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) muic_pdata->init_data[i].addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) muic_pdata->init_data[i].data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) * h/w path of COMP2/COMN1 on CONTROL1 register.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) if (muic_pdata->path_uart)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) info->path_uart = muic_pdata->path_uart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) info->path_uart = CONTROL1_SW_UART;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) if (muic_pdata->path_usb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) info->path_usb = muic_pdata->path_usb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) info->path_usb = CONTROL1_SW_USB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) * Default delay time for detecting cable state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) * after certain time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) if (muic_pdata->detcable_delay_ms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) delay_jiffies =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) msecs_to_jiffies(muic_pdata->detcable_delay_ms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) info->path_uart = CONTROL1_SW_UART;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) info->path_usb = CONTROL1_SW_USB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) /* Set initial path for UART when JIG is connected to get serial logs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) ret = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) 2, info->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) dev_err(info->dev, "failed to read MUIC register\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) goto err_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) cable_type = max8997_muic_get_cable_type(info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) MAX8997_CABLE_GROUP_ADC, &attached);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) if (attached && cable_type == MAX8997_MUIC_ADC_FACTORY_MODE_UART_OFF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) max8997_muic_set_path(info, info->path_uart, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) /* Set ADC debounce time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) max8997_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) * Detect accessory after completing the initialization of platform
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) * - Use delayed workqueue to detect cable state and then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) * notify cable state to notifiee/platform through uevent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) * After completing the booting of platform, the extcon provider
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) * driver should notify cable state to upper layer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) INIT_DELAYED_WORK(&info->wq_detcable, max8997_muic_detect_cable_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) delay_jiffies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) err_irq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) while (--i >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) free_irq(muic_irqs[i].virq, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) static int max8997_muic_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) struct max8997_muic_info *info = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) for (i = 0; i < ARRAY_SIZE(muic_irqs); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) free_irq(muic_irqs[i].virq, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) cancel_work_sync(&info->irq_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) static struct platform_driver max8997_muic_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) .name = DEV_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) .probe = max8997_muic_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) .remove = max8997_muic_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) module_platform_driver(max8997_muic_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) MODULE_DESCRIPTION("Maxim MAX8997 Extcon driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) MODULE_AUTHOR("Donggeun Kim <dg77.kim@samsung.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) MODULE_ALIAS("platform:max8997-muic");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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