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6ae840e7cc
Here's the big char/misc driver update for 3.19-rc1 Lots of little things all over the place in different drivers, and a new subsystem, "coresight" has been added. Full details are in the shortlog. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEABECAAYFAlSODosACgkQMUfUDdst+ykSNwCfcqx1Z3rQzbLwSrR2sa1fV3Zb yEAAniJoLZ4ZkoQK4/1ozsFc31q+gXNm =/epr -----END PGP SIGNATURE----- Merge tag 'char-misc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver update for 3.19-rc1 Lots of little things all over the place in different drivers, and a new subsystem, "coresight" has been added. Full details are in the shortlog" * tag 'char-misc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (73 commits) parport: parport_pc, do not remove parent devices early spmi: Remove shutdown/suspend/resume kernel-doc carma-fpga-program: drop videobuf dependency carma-fpga: drop videobuf dependency carma-fpga-program.c: fix compile errors i8k: Fix temperature bug handling in i8k_get_temp() cxl: Name interrupts in /proc/interrupt CXL: Return error to PSL if IRQ demultiplexing fails & print clearer warning coresight-replicator: remove .owner field for driver coresight: fixed comments in coresight.h coresight: fix typo in comment in coresight-priv.h coresight: bindings for coresight drivers coresight: Adding ABI documentation w1: support auto-load of w1_bq27000 module. w1: avoid potential u16 overflow cn: verify msg->len before making callback mei: export fw status registers through sysfs mei: read and print all six FW status registers mei: txe: add cherrytrail device id mei: kill cached host and me csr values ...
1317 lines
37 KiB
C
1317 lines
37 KiB
C
/*
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* extcon-max77693.c - MAX77693 extcon driver to support MAX77693 MUIC
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*
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* Copyright (C) 2012 Samsung Electrnoics
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* Chanwoo Choi <cw00.choi@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/mfd/max77693.h>
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#include <linux/mfd/max77693-private.h>
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#include <linux/extcon.h>
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#include <linux/regmap.h>
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#include <linux/irqdomain.h>
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#define DEV_NAME "max77693-muic"
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#define DELAY_MS_DEFAULT 20000 /* unit: millisecond */
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/*
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* Default value of MAX77693 register to bring up MUIC device.
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* If user don't set some initial value for MUIC device through platform data,
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* extcon-max77693 driver use 'default_init_data' to bring up base operation
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* of MAX77693 MUIC device.
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*/
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static struct max77693_reg_data default_init_data[] = {
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{
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/* STATUS2 - [3]ChgDetRun */
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.addr = MAX77693_MUIC_REG_STATUS2,
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.data = STATUS2_CHGDETRUN_MASK,
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}, {
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/* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */
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.addr = MAX77693_MUIC_REG_INTMASK1,
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.data = INTMASK1_ADC1K_MASK
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| INTMASK1_ADC_MASK,
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}, {
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/* INTMASK2 - Unmask [0]ChgTypM */
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.addr = MAX77693_MUIC_REG_INTMASK2,
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.data = INTMASK2_CHGTYP_MASK,
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}, {
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/* INTMASK3 - Mask all of interrupts */
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.addr = MAX77693_MUIC_REG_INTMASK3,
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.data = 0x0,
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}, {
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/* CDETCTRL2 */
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.addr = MAX77693_MUIC_REG_CDETCTRL2,
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.data = CDETCTRL2_VIDRMEN_MASK
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| CDETCTRL2_DXOVPEN_MASK,
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},
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};
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enum max77693_muic_adc_debounce_time {
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ADC_DEBOUNCE_TIME_5MS = 0,
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ADC_DEBOUNCE_TIME_10MS,
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ADC_DEBOUNCE_TIME_25MS,
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ADC_DEBOUNCE_TIME_38_62MS,
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};
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struct max77693_muic_info {
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struct device *dev;
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struct max77693_dev *max77693;
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struct extcon_dev *edev;
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int prev_cable_type;
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int prev_cable_type_gnd;
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int prev_chg_type;
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int prev_button_type;
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u8 status[2];
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int irq;
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struct work_struct irq_work;
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struct mutex mutex;
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/*
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* Use delayed workqueue to detect cable state and then
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* notify cable state to notifiee/platform through uevent.
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* After completing the booting of platform, the extcon provider
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* driver should notify cable state to upper layer.
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*/
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struct delayed_work wq_detcable;
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/* Button of dock device */
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struct input_dev *dock;
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/*
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* Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
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* h/w path of COMP2/COMN1 on CONTROL1 register.
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*/
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int path_usb;
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int path_uart;
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};
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enum max77693_muic_cable_group {
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MAX77693_CABLE_GROUP_ADC = 0,
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MAX77693_CABLE_GROUP_ADC_GND,
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MAX77693_CABLE_GROUP_CHG,
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MAX77693_CABLE_GROUP_VBVOLT,
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};
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enum max77693_muic_charger_type {
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MAX77693_CHARGER_TYPE_NONE = 0,
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MAX77693_CHARGER_TYPE_USB,
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MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT,
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MAX77693_CHARGER_TYPE_DEDICATED_CHG,
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MAX77693_CHARGER_TYPE_APPLE_500MA,
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MAX77693_CHARGER_TYPE_APPLE_1A_2A,
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MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7,
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};
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/**
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* struct max77693_muic_irq
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* @irq: the index of irq list of MUIC device.
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* @name: the name of irq.
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* @virq: the virtual irq to use irq domain
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*/
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struct max77693_muic_irq {
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unsigned int irq;
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const char *name;
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unsigned int virq;
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};
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static struct max77693_muic_irq muic_irqs[] = {
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{ MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" },
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{ MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" },
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{ MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" },
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{ MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" },
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{ MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" },
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{ MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" },
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{ MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" },
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{ MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" },
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{ MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" },
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{ MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" },
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{ MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" },
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{ MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" },
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{ MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" },
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{ MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" },
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{ MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" },
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{ MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" },
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};
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/* Define supported accessory type */
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enum max77693_muic_acc_type {
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MAX77693_MUIC_ADC_GROUND = 0x0,
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MAX77693_MUIC_ADC_SEND_END_BUTTON,
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MAX77693_MUIC_ADC_REMOTE_S1_BUTTON,
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MAX77693_MUIC_ADC_REMOTE_S2_BUTTON,
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MAX77693_MUIC_ADC_REMOTE_S3_BUTTON,
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MAX77693_MUIC_ADC_REMOTE_S4_BUTTON,
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MAX77693_MUIC_ADC_REMOTE_S5_BUTTON,
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MAX77693_MUIC_ADC_REMOTE_S6_BUTTON,
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MAX77693_MUIC_ADC_REMOTE_S7_BUTTON,
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MAX77693_MUIC_ADC_REMOTE_S8_BUTTON,
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MAX77693_MUIC_ADC_REMOTE_S9_BUTTON,
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MAX77693_MUIC_ADC_REMOTE_S10_BUTTON,
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MAX77693_MUIC_ADC_REMOTE_S11_BUTTON,
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MAX77693_MUIC_ADC_REMOTE_S12_BUTTON,
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MAX77693_MUIC_ADC_RESERVED_ACC_1,
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MAX77693_MUIC_ADC_RESERVED_ACC_2,
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MAX77693_MUIC_ADC_RESERVED_ACC_3,
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MAX77693_MUIC_ADC_RESERVED_ACC_4,
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MAX77693_MUIC_ADC_RESERVED_ACC_5,
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MAX77693_MUIC_ADC_CEA936_AUDIO,
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MAX77693_MUIC_ADC_PHONE_POWERED_DEV,
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MAX77693_MUIC_ADC_TTY_CONVERTER,
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MAX77693_MUIC_ADC_UART_CABLE,
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MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG,
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MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF,
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MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON,
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MAX77693_MUIC_ADC_AV_CABLE_NOLOAD,
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MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG,
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MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF,
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MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON,
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MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE,
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MAX77693_MUIC_ADC_OPEN,
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/* The below accessories have same ADC value so ADCLow and
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ADC1K bit is used to separate specific accessory */
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/* ADC|VBVolot|ADCLow|ADC1K| */
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MAX77693_MUIC_GND_USB_OTG = 0x100, /* 0x0| 0| 0| 0| */
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MAX77693_MUIC_GND_USB_OTG_VB = 0x104, /* 0x0| 1| 0| 0| */
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MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* 0x0| 0| 1| 0| */
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MAX77693_MUIC_GND_MHL = 0x103, /* 0x0| 0| 1| 1| */
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MAX77693_MUIC_GND_MHL_VB = 0x107, /* 0x0| 1| 1| 1| */
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};
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/*
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* MAX77693 MUIC device support below list of accessories(external connector)
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*/
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enum {
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EXTCON_CABLE_USB = 0,
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EXTCON_CABLE_USB_HOST,
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EXTCON_CABLE_TA,
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EXTCON_CABLE_FAST_CHARGER,
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EXTCON_CABLE_SLOW_CHARGER,
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EXTCON_CABLE_CHARGE_DOWNSTREAM,
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EXTCON_CABLE_MHL,
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EXTCON_CABLE_MHL_TA,
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EXTCON_CABLE_JIG_USB_ON,
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EXTCON_CABLE_JIG_USB_OFF,
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EXTCON_CABLE_JIG_UART_OFF,
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EXTCON_CABLE_JIG_UART_ON,
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EXTCON_CABLE_DOCK_SMART,
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EXTCON_CABLE_DOCK_DESK,
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EXTCON_CABLE_DOCK_AUDIO,
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_EXTCON_CABLE_NUM,
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};
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static const char *max77693_extcon_cable[] = {
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[EXTCON_CABLE_USB] = "USB",
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[EXTCON_CABLE_USB_HOST] = "USB-Host",
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[EXTCON_CABLE_TA] = "TA",
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[EXTCON_CABLE_FAST_CHARGER] = "Fast-charger",
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[EXTCON_CABLE_SLOW_CHARGER] = "Slow-charger",
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[EXTCON_CABLE_CHARGE_DOWNSTREAM] = "Charge-downstream",
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[EXTCON_CABLE_MHL] = "MHL",
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[EXTCON_CABLE_MHL_TA] = "MHL_TA",
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[EXTCON_CABLE_JIG_USB_ON] = "JIG-USB-ON",
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[EXTCON_CABLE_JIG_USB_OFF] = "JIG-USB-OFF",
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[EXTCON_CABLE_JIG_UART_OFF] = "JIG-UART-OFF",
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[EXTCON_CABLE_JIG_UART_ON] = "JIG-UART-ON",
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[EXTCON_CABLE_DOCK_SMART] = "Dock-Smart",
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[EXTCON_CABLE_DOCK_DESK] = "Dock-Desk",
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[EXTCON_CABLE_DOCK_AUDIO] = "Dock-Audio",
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NULL,
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};
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/*
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* max77693_muic_set_debounce_time - Set the debounce time of ADC
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* @info: the instance including private data of max77693 MUIC
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* @time: the debounce time of ADC
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*/
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static int max77693_muic_set_debounce_time(struct max77693_muic_info *info,
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enum max77693_muic_adc_debounce_time time)
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{
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int ret;
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switch (time) {
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case ADC_DEBOUNCE_TIME_5MS:
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case ADC_DEBOUNCE_TIME_10MS:
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case ADC_DEBOUNCE_TIME_25MS:
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case ADC_DEBOUNCE_TIME_38_62MS:
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/*
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* Don't touch BTLDset, JIGset when you want to change adc
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* debounce time. If it writes other than 0 to BTLDset, JIGset
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* muic device will be reset and loose current state.
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*/
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ret = regmap_write(info->max77693->regmap_muic,
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MAX77693_MUIC_REG_CTRL3,
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time << CONTROL3_ADCDBSET_SHIFT);
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if (ret) {
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dev_err(info->dev, "failed to set ADC debounce time\n");
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return ret;
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}
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break;
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default:
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dev_err(info->dev, "invalid ADC debounce time\n");
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return -EINVAL;
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}
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return 0;
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};
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/*
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* max77693_muic_set_path - Set hardware line according to attached cable
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* @info: the instance including private data of max77693 MUIC
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* @value: the path according to attached cable
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* @attached: the state of cable (true:attached, false:detached)
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*
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* The max77693 MUIC device share outside H/W line among a varity of cables
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* so, this function set internal path of H/W line according to the type of
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* attached cable.
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*/
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static int max77693_muic_set_path(struct max77693_muic_info *info,
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u8 val, bool attached)
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{
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int ret = 0;
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unsigned int ctrl1, ctrl2 = 0;
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if (attached)
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ctrl1 = val;
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else
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ctrl1 = CONTROL1_SW_OPEN;
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ret = regmap_update_bits(info->max77693->regmap_muic,
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MAX77693_MUIC_REG_CTRL1, COMP_SW_MASK, ctrl1);
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if (ret < 0) {
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dev_err(info->dev, "failed to update MUIC register\n");
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return ret;
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}
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if (attached)
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ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */
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else
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ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */
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ret = regmap_update_bits(info->max77693->regmap_muic,
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MAX77693_MUIC_REG_CTRL2,
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CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK, ctrl2);
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if (ret < 0) {
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dev_err(info->dev, "failed to update MUIC register\n");
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return ret;
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}
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dev_info(info->dev,
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"CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n",
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ctrl1, ctrl2, attached ? "attached" : "detached");
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return 0;
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}
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/*
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* max77693_muic_get_cable_type - Return cable type and check cable state
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* @info: the instance including private data of max77693 MUIC
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* @group: the path according to attached cable
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* @attached: store cable state and return
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*
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* This function check the cable state either attached or detached,
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* and then divide precise type of cable according to cable group.
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* - MAX77693_CABLE_GROUP_ADC
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* - MAX77693_CABLE_GROUP_ADC_GND
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* - MAX77693_CABLE_GROUP_CHG
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* - MAX77693_CABLE_GROUP_VBVOLT
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*/
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static int max77693_muic_get_cable_type(struct max77693_muic_info *info,
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enum max77693_muic_cable_group group, bool *attached)
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{
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int cable_type = 0;
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int adc;
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int adc1k;
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int adclow;
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int vbvolt;
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int chg_type;
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switch (group) {
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case MAX77693_CABLE_GROUP_ADC:
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/*
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* Read ADC value to check cable type and decide cable state
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* according to cable type
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*/
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adc = info->status[0] & STATUS1_ADC_MASK;
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adc >>= STATUS1_ADC_SHIFT;
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/*
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* Check current cable state/cable type and store cable type
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* (info->prev_cable_type) for handling cable when cable is
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* detached.
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*/
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if (adc == MAX77693_MUIC_ADC_OPEN) {
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*attached = false;
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cable_type = info->prev_cable_type;
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info->prev_cable_type = MAX77693_MUIC_ADC_OPEN;
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} else {
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*attached = true;
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cable_type = info->prev_cable_type = adc;
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}
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break;
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case MAX77693_CABLE_GROUP_ADC_GND:
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/*
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* Read ADC value to check cable type and decide cable state
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* according to cable type
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*/
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adc = info->status[0] & STATUS1_ADC_MASK;
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adc >>= STATUS1_ADC_SHIFT;
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/*
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* Check current cable state/cable type and store cable type
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* (info->prev_cable_type/_gnd) for handling cable when cable
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* is detached.
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*/
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if (adc == MAX77693_MUIC_ADC_OPEN) {
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*attached = false;
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cable_type = info->prev_cable_type_gnd;
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info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN;
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} else {
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*attached = true;
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adclow = info->status[0] & STATUS1_ADCLOW_MASK;
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adclow >>= STATUS1_ADCLOW_SHIFT;
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adc1k = info->status[0] & STATUS1_ADC1K_MASK;
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adc1k >>= STATUS1_ADC1K_SHIFT;
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vbvolt = info->status[1] & STATUS2_VBVOLT_MASK;
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vbvolt >>= STATUS2_VBVOLT_SHIFT;
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/**
|
|
* [0x1|VBVolt|ADCLow|ADC1K]
|
|
* [0x1| 0| 0| 0] USB_OTG
|
|
* [0x1| 1| 0| 0] USB_OTG_VB
|
|
* [0x1| 0| 1| 0] Audio Video cable with load
|
|
* [0x1| 0| 1| 1] MHL without charging cable
|
|
* [0x1| 1| 1| 1] MHL with charging cable
|
|
*/
|
|
cable_type = ((0x1 << 8)
|
|
| (vbvolt << 2)
|
|
| (adclow << 1)
|
|
| adc1k);
|
|
|
|
info->prev_cable_type = adc;
|
|
info->prev_cable_type_gnd = cable_type;
|
|
}
|
|
|
|
break;
|
|
case MAX77693_CABLE_GROUP_CHG:
|
|
/*
|
|
* Read charger type to check cable type and decide cable state
|
|
* according to type of charger cable.
|
|
*/
|
|
chg_type = info->status[1] & STATUS2_CHGTYP_MASK;
|
|
chg_type >>= STATUS2_CHGTYP_SHIFT;
|
|
|
|
if (chg_type == MAX77693_CHARGER_TYPE_NONE) {
|
|
*attached = false;
|
|
|
|
cable_type = info->prev_chg_type;
|
|
info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE;
|
|
} else {
|
|
*attached = true;
|
|
|
|
/*
|
|
* Check current cable state/cable type and store cable
|
|
* type(info->prev_chg_type) for handling cable when
|
|
* charger cable is detached.
|
|
*/
|
|
cable_type = info->prev_chg_type = chg_type;
|
|
}
|
|
|
|
break;
|
|
case MAX77693_CABLE_GROUP_VBVOLT:
|
|
/*
|
|
* Read ADC value to check cable type and decide cable state
|
|
* according to cable type
|
|
*/
|
|
adc = info->status[0] & STATUS1_ADC_MASK;
|
|
adc >>= STATUS1_ADC_SHIFT;
|
|
chg_type = info->status[1] & STATUS2_CHGTYP_MASK;
|
|
chg_type >>= STATUS2_CHGTYP_SHIFT;
|
|
|
|
if (adc == MAX77693_MUIC_ADC_OPEN
|
|
&& chg_type == MAX77693_CHARGER_TYPE_NONE)
|
|
*attached = false;
|
|
else
|
|
*attached = true;
|
|
|
|
/*
|
|
* Read vbvolt field, if vbvolt is 1,
|
|
* this cable is used for charging.
|
|
*/
|
|
vbvolt = info->status[1] & STATUS2_VBVOLT_MASK;
|
|
vbvolt >>= STATUS2_VBVOLT_SHIFT;
|
|
|
|
cable_type = vbvolt;
|
|
break;
|
|
default:
|
|
dev_err(info->dev, "Unknown cable group (%d)\n", group);
|
|
cable_type = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return cable_type;
|
|
}
|
|
|
|
static int max77693_muic_dock_handler(struct max77693_muic_info *info,
|
|
int cable_type, bool attached)
|
|
{
|
|
int ret = 0;
|
|
int vbvolt;
|
|
bool cable_attached;
|
|
char dock_name[CABLE_NAME_MAX];
|
|
|
|
dev_info(info->dev,
|
|
"external connector is %s (adc:0x%02x)\n",
|
|
attached ? "attached" : "detached", cable_type);
|
|
|
|
switch (cable_type) {
|
|
case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
|
|
/*
|
|
* Check power cable whether attached or detached state.
|
|
* The Dock-Smart device need surely external power supply.
|
|
* If power cable(USB/TA) isn't connected to Dock device,
|
|
* user can't use Dock-Smart for desktop mode.
|
|
*/
|
|
vbvolt = max77693_muic_get_cable_type(info,
|
|
MAX77693_CABLE_GROUP_VBVOLT, &cable_attached);
|
|
if (attached && !vbvolt) {
|
|
dev_warn(info->dev,
|
|
"Cannot detect external power supply\n");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Notify Dock-Smart/MHL state.
|
|
* - Dock-Smart device include three type of cable which
|
|
* are HDMI, USB for mouse/keyboard and micro-usb port
|
|
* for USB/TA cable. Dock-Smart device need always exteranl
|
|
* power supply(USB/TA cable through micro-usb cable). Dock-
|
|
* Smart device support screen output of target to separate
|
|
* monitor and mouse/keyboard for desktop mode.
|
|
*
|
|
* Features of 'USB/TA cable with Dock-Smart device'
|
|
* - Support MHL
|
|
* - Support external output feature of audio
|
|
* - Support charging through micro-usb port without data
|
|
* connection if TA cable is connected to target.
|
|
* - Support charging and data connection through micro-usb port
|
|
* if USB cable is connected between target and host
|
|
* device.
|
|
* - Support OTG device (Mouse/Keyboard)
|
|
*/
|
|
ret = max77693_muic_set_path(info, info->path_usb, attached);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
extcon_set_cable_state(info->edev, "Dock-Smart", attached);
|
|
extcon_set_cable_state(info->edev, "MHL", attached);
|
|
goto out;
|
|
case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */
|
|
strcpy(dock_name, "Dock-Desk");
|
|
break;
|
|
case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
|
|
strcpy(dock_name, "Dock-Audio");
|
|
if (!attached)
|
|
extcon_set_cable_state(info->edev, "USB", false);
|
|
break;
|
|
default:
|
|
dev_err(info->dev, "failed to detect %s dock device\n",
|
|
attached ? "attached" : "detached");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Dock-Car/Desk/Audio, PATH:AUDIO */
|
|
ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached);
|
|
if (ret < 0)
|
|
return ret;
|
|
extcon_set_cable_state(info->edev, dock_name, attached);
|
|
|
|
out:
|
|
return 0;
|
|
}
|
|
|
|
static int max77693_muic_dock_button_handler(struct max77693_muic_info *info,
|
|
int button_type, bool attached)
|
|
{
|
|
struct input_dev *dock = info->dock;
|
|
unsigned int code;
|
|
|
|
switch (button_type) {
|
|
case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1
|
|
... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1:
|
|
/* DOCK_KEY_PREV */
|
|
code = KEY_PREVIOUSSONG;
|
|
break;
|
|
case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1
|
|
... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1:
|
|
/* DOCK_KEY_NEXT */
|
|
code = KEY_NEXTSONG;
|
|
break;
|
|
case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON:
|
|
/* DOCK_VOL_DOWN */
|
|
code = KEY_VOLUMEDOWN;
|
|
break;
|
|
case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON:
|
|
/* DOCK_VOL_UP */
|
|
code = KEY_VOLUMEUP;
|
|
break;
|
|
case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1
|
|
... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1:
|
|
/* DOCK_KEY_PLAY_PAUSE */
|
|
code = KEY_PLAYPAUSE;
|
|
break;
|
|
default:
|
|
dev_err(info->dev,
|
|
"failed to detect %s key (adc:0x%x)\n",
|
|
attached ? "pressed" : "released", button_type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
input_event(dock, EV_KEY, code, attached);
|
|
input_sync(dock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info)
|
|
{
|
|
int cable_type_gnd;
|
|
int ret = 0;
|
|
bool attached;
|
|
|
|
cable_type_gnd = max77693_muic_get_cable_type(info,
|
|
MAX77693_CABLE_GROUP_ADC_GND, &attached);
|
|
|
|
switch (cable_type_gnd) {
|
|
case MAX77693_MUIC_GND_USB_OTG:
|
|
case MAX77693_MUIC_GND_USB_OTG_VB:
|
|
/* USB_OTG, PATH: AP_USB */
|
|
ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached);
|
|
if (ret < 0)
|
|
return ret;
|
|
extcon_set_cable_state(info->edev, "USB-Host", attached);
|
|
break;
|
|
case MAX77693_MUIC_GND_AV_CABLE_LOAD:
|
|
/* Audio Video Cable with load, PATH:AUDIO */
|
|
ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached);
|
|
if (ret < 0)
|
|
return ret;
|
|
extcon_set_cable_state(info->edev,
|
|
"Audio-video-load", attached);
|
|
break;
|
|
case MAX77693_MUIC_GND_MHL:
|
|
case MAX77693_MUIC_GND_MHL_VB:
|
|
/* MHL or MHL with USB/TA cable */
|
|
extcon_set_cable_state(info->edev, "MHL", attached);
|
|
break;
|
|
default:
|
|
dev_err(info->dev, "failed to detect %s cable of gnd type\n",
|
|
attached ? "attached" : "detached");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int max77693_muic_jig_handler(struct max77693_muic_info *info,
|
|
int cable_type, bool attached)
|
|
{
|
|
char cable_name[32];
|
|
int ret = 0;
|
|
u8 path = CONTROL1_SW_OPEN;
|
|
|
|
dev_info(info->dev,
|
|
"external connector is %s (adc:0x%02x)\n",
|
|
attached ? "attached" : "detached", cable_type);
|
|
|
|
switch (cable_type) {
|
|
case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */
|
|
/* PATH:AP_USB */
|
|
strcpy(cable_name, "JIG-USB-OFF");
|
|
path = CONTROL1_SW_USB;
|
|
break;
|
|
case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */
|
|
/* PATH:AP_USB */
|
|
strcpy(cable_name, "JIG-USB-ON");
|
|
path = CONTROL1_SW_USB;
|
|
break;
|
|
case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */
|
|
/* PATH:AP_UART */
|
|
strcpy(cable_name, "JIG-UART-OFF");
|
|
path = CONTROL1_SW_UART;
|
|
break;
|
|
case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* ADC_JIG_UART_ON */
|
|
/* PATH:AP_UART */
|
|
strcpy(cable_name, "JIG-UART-ON");
|
|
path = CONTROL1_SW_UART;
|
|
break;
|
|
default:
|
|
dev_err(info->dev, "failed to detect %s jig cable\n",
|
|
attached ? "attached" : "detached");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = max77693_muic_set_path(info, path, attached);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
extcon_set_cable_state(info->edev, cable_name, attached);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int max77693_muic_adc_handler(struct max77693_muic_info *info)
|
|
{
|
|
int cable_type;
|
|
int button_type;
|
|
bool attached;
|
|
int ret = 0;
|
|
|
|
/* Check accessory state which is either detached or attached */
|
|
cable_type = max77693_muic_get_cable_type(info,
|
|
MAX77693_CABLE_GROUP_ADC, &attached);
|
|
|
|
dev_info(info->dev,
|
|
"external connector is %s (adc:0x%02x, prev_adc:0x%x)\n",
|
|
attached ? "attached" : "detached", cable_type,
|
|
info->prev_cable_type);
|
|
|
|
switch (cable_type) {
|
|
case MAX77693_MUIC_ADC_GROUND:
|
|
/* USB_OTG/MHL/Audio */
|
|
max77693_muic_adc_ground_handler(info);
|
|
break;
|
|
case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF:
|
|
case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON:
|
|
case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF:
|
|
case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON:
|
|
/* JIG */
|
|
ret = max77693_muic_jig_handler(info, cable_type, attached);
|
|
if (ret < 0)
|
|
return ret;
|
|
break;
|
|
case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
|
|
case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */
|
|
case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
|
|
/*
|
|
* DOCK device
|
|
*
|
|
* The MAX77693 MUIC device can detect total 34 cable type
|
|
* except of charger cable and MUIC device didn't define
|
|
* specfic role of cable in the range of from 0x01 to 0x12
|
|
* of ADC value. So, can use/define cable with no role according
|
|
* to schema of hardware board.
|
|
*/
|
|
ret = max77693_muic_dock_handler(info, cable_type, attached);
|
|
if (ret < 0)
|
|
return ret;
|
|
break;
|
|
case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */
|
|
case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */
|
|
case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */
|
|
case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */
|
|
case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */
|
|
/*
|
|
* Button of DOCK device
|
|
* - the Prev/Next/Volume Up/Volume Down/Play-Pause button
|
|
*
|
|
* The MAX77693 MUIC device can detect total 34 cable type
|
|
* except of charger cable and MUIC device didn't define
|
|
* specfic role of cable in the range of from 0x01 to 0x12
|
|
* of ADC value. So, can use/define cable with no role according
|
|
* to schema of hardware board.
|
|
*/
|
|
if (attached)
|
|
button_type = info->prev_button_type = cable_type;
|
|
else
|
|
button_type = info->prev_button_type;
|
|
|
|
ret = max77693_muic_dock_button_handler(info, button_type,
|
|
attached);
|
|
if (ret < 0)
|
|
return ret;
|
|
break;
|
|
case MAX77693_MUIC_ADC_SEND_END_BUTTON:
|
|
case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON:
|
|
case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON:
|
|
case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON:
|
|
case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON:
|
|
case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON:
|
|
case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON:
|
|
case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON:
|
|
case MAX77693_MUIC_ADC_RESERVED_ACC_1:
|
|
case MAX77693_MUIC_ADC_RESERVED_ACC_2:
|
|
case MAX77693_MUIC_ADC_RESERVED_ACC_4:
|
|
case MAX77693_MUIC_ADC_RESERVED_ACC_5:
|
|
case MAX77693_MUIC_ADC_CEA936_AUDIO:
|
|
case MAX77693_MUIC_ADC_PHONE_POWERED_DEV:
|
|
case MAX77693_MUIC_ADC_TTY_CONVERTER:
|
|
case MAX77693_MUIC_ADC_UART_CABLE:
|
|
case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG:
|
|
case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG:
|
|
/*
|
|
* This accessory isn't used in general case if it is specially
|
|
* needed to detect additional accessory, should implement
|
|
* proper operation when this accessory is attached/detached.
|
|
*/
|
|
dev_info(info->dev,
|
|
"accessory is %s but it isn't used (adc:0x%x)\n",
|
|
attached ? "attached" : "detached", cable_type);
|
|
return -EAGAIN;
|
|
default:
|
|
dev_err(info->dev,
|
|
"failed to detect %s accessory (adc:0x%x)\n",
|
|
attached ? "attached" : "detached", cable_type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int max77693_muic_chg_handler(struct max77693_muic_info *info)
|
|
{
|
|
int chg_type;
|
|
int cable_type_gnd;
|
|
int cable_type;
|
|
bool attached;
|
|
bool cable_attached;
|
|
int ret = 0;
|
|
|
|
chg_type = max77693_muic_get_cable_type(info,
|
|
MAX77693_CABLE_GROUP_CHG, &attached);
|
|
|
|
dev_info(info->dev,
|
|
"external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n",
|
|
attached ? "attached" : "detached",
|
|
chg_type, info->prev_chg_type);
|
|
|
|
switch (chg_type) {
|
|
case MAX77693_CHARGER_TYPE_USB:
|
|
case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
|
|
case MAX77693_CHARGER_TYPE_NONE:
|
|
/* Check MAX77693_CABLE_GROUP_ADC_GND type */
|
|
cable_type_gnd = max77693_muic_get_cable_type(info,
|
|
MAX77693_CABLE_GROUP_ADC_GND,
|
|
&cable_attached);
|
|
switch (cable_type_gnd) {
|
|
case MAX77693_MUIC_GND_MHL:
|
|
case MAX77693_MUIC_GND_MHL_VB:
|
|
/*
|
|
* MHL cable with MHL_TA(USB/TA) cable
|
|
* - MHL cable include two port(HDMI line and separate
|
|
* micro-usb port. When the target connect MHL cable,
|
|
* extcon driver check whether MHL_TA(USB/TA) cable is
|
|
* connected. If MHL_TA cable is connected, extcon
|
|
* driver notify state to notifiee for charging battery.
|
|
*
|
|
* Features of 'MHL_TA(USB/TA) with MHL cable'
|
|
* - Support MHL
|
|
* - Support charging through micro-usb port without
|
|
* data connection
|
|
*/
|
|
extcon_set_cable_state(info->edev, "MHL_TA", attached);
|
|
if (!cable_attached)
|
|
extcon_set_cable_state(info->edev,
|
|
"MHL", cable_attached);
|
|
break;
|
|
}
|
|
|
|
/* Check MAX77693_CABLE_GROUP_ADC type */
|
|
cable_type = max77693_muic_get_cable_type(info,
|
|
MAX77693_CABLE_GROUP_ADC,
|
|
&cable_attached);
|
|
switch (cable_type) {
|
|
case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
|
|
/*
|
|
* Dock-Audio device with USB/TA cable
|
|
* - Dock device include two port(Dock-Audio and micro-
|
|
* usb port). When the target connect Dock-Audio device,
|
|
* extcon driver check whether USB/TA cable is connected
|
|
* or not. If USB/TA cable is connected, extcon driver
|
|
* notify state to notifiee for charging battery.
|
|
*
|
|
* Features of 'USB/TA cable with Dock-Audio device'
|
|
* - Support external output feature of audio.
|
|
* - Support charging through micro-usb port without
|
|
* data connection.
|
|
*/
|
|
extcon_set_cable_state(info->edev, "USB", attached);
|
|
|
|
if (!cable_attached)
|
|
extcon_set_cable_state(info->edev, "Dock-Audio",
|
|
cable_attached);
|
|
break;
|
|
case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
|
|
/*
|
|
* Dock-Smart device with USB/TA cable
|
|
* - Dock-Desk device include three type of cable which
|
|
* are HDMI, USB for mouse/keyboard and micro-usb port
|
|
* for USB/TA cable. Dock-Smart device need always
|
|
* exteranl power supply(USB/TA cable through micro-usb
|
|
* cable). Dock-Smart device support screen output of
|
|
* target to separate monitor and mouse/keyboard for
|
|
* desktop mode.
|
|
*
|
|
* Features of 'USB/TA cable with Dock-Smart device'
|
|
* - Support MHL
|
|
* - Support external output feature of audio
|
|
* - Support charging through micro-usb port without
|
|
* data connection if TA cable is connected to target.
|
|
* - Support charging and data connection through micro-
|
|
* usb port if USB cable is connected between target
|
|
* and host device
|
|
* - Support OTG device (Mouse/Keyboard)
|
|
*/
|
|
ret = max77693_muic_set_path(info, info->path_usb,
|
|
attached);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
extcon_set_cable_state(info->edev, "Dock-Smart",
|
|
attached);
|
|
extcon_set_cable_state(info->edev, "MHL", attached);
|
|
|
|
break;
|
|
}
|
|
|
|
/* Check MAX77693_CABLE_GROUP_CHG type */
|
|
switch (chg_type) {
|
|
case MAX77693_CHARGER_TYPE_NONE:
|
|
/*
|
|
* When MHL(with USB/TA cable) or Dock-Audio with USB/TA
|
|
* cable is attached, muic device happen below two irq.
|
|
* - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting
|
|
* MHL/Dock-Audio.
|
|
* - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting
|
|
* USB/TA cable connected to MHL or Dock-Audio.
|
|
* Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC
|
|
* irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq.
|
|
*
|
|
* If user attach MHL (with USB/TA cable and immediately
|
|
* detach MHL with USB/TA cable before MAX77693_MUIC_IRQ
|
|
* _INT2_CHGTYP irq is happened, USB/TA cable remain
|
|
* connected state to target. But USB/TA cable isn't
|
|
* connected to target. The user be face with unusual
|
|
* action. So, driver should check this situation in
|
|
* spite of, that previous charger type is N/A.
|
|
*/
|
|
break;
|
|
case MAX77693_CHARGER_TYPE_USB:
|
|
/* Only USB cable, PATH:AP_USB */
|
|
ret = max77693_muic_set_path(info, info->path_usb,
|
|
attached);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
extcon_set_cable_state(info->edev, "USB", attached);
|
|
break;
|
|
case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
|
|
/* Only TA cable */
|
|
extcon_set_cable_state(info->edev, "TA", attached);
|
|
break;
|
|
}
|
|
break;
|
|
case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT:
|
|
extcon_set_cable_state(info->edev,
|
|
"Charge-downstream", attached);
|
|
break;
|
|
case MAX77693_CHARGER_TYPE_APPLE_500MA:
|
|
extcon_set_cable_state(info->edev, "Slow-charger", attached);
|
|
break;
|
|
case MAX77693_CHARGER_TYPE_APPLE_1A_2A:
|
|
extcon_set_cable_state(info->edev, "Fast-charger", attached);
|
|
break;
|
|
case MAX77693_CHARGER_TYPE_DEAD_BATTERY:
|
|
break;
|
|
default:
|
|
dev_err(info->dev,
|
|
"failed to detect %s accessory (chg_type:0x%x)\n",
|
|
attached ? "attached" : "detached", chg_type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void max77693_muic_irq_work(struct work_struct *work)
|
|
{
|
|
struct max77693_muic_info *info = container_of(work,
|
|
struct max77693_muic_info, irq_work);
|
|
int irq_type = -1;
|
|
int i, ret = 0;
|
|
|
|
if (!info->edev)
|
|
return;
|
|
|
|
mutex_lock(&info->mutex);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(muic_irqs); i++)
|
|
if (info->irq == muic_irqs[i].virq)
|
|
irq_type = muic_irqs[i].irq;
|
|
|
|
ret = regmap_bulk_read(info->max77693->regmap_muic,
|
|
MAX77693_MUIC_REG_STATUS1, info->status, 2);
|
|
if (ret) {
|
|
dev_err(info->dev, "failed to read MUIC register\n");
|
|
mutex_unlock(&info->mutex);
|
|
return;
|
|
}
|
|
|
|
switch (irq_type) {
|
|
case MAX77693_MUIC_IRQ_INT1_ADC:
|
|
case MAX77693_MUIC_IRQ_INT1_ADC_LOW:
|
|
case MAX77693_MUIC_IRQ_INT1_ADC_ERR:
|
|
case MAX77693_MUIC_IRQ_INT1_ADC1K:
|
|
/* Handle all of accessory except for
|
|
type of charger accessory */
|
|
ret = max77693_muic_adc_handler(info);
|
|
break;
|
|
case MAX77693_MUIC_IRQ_INT2_CHGTYP:
|
|
case MAX77693_MUIC_IRQ_INT2_CHGDETREUN:
|
|
case MAX77693_MUIC_IRQ_INT2_DCDTMR:
|
|
case MAX77693_MUIC_IRQ_INT2_DXOVP:
|
|
case MAX77693_MUIC_IRQ_INT2_VBVOLT:
|
|
case MAX77693_MUIC_IRQ_INT2_VIDRM:
|
|
/* Handle charger accessory */
|
|
ret = max77693_muic_chg_handler(info);
|
|
break;
|
|
case MAX77693_MUIC_IRQ_INT3_EOC:
|
|
case MAX77693_MUIC_IRQ_INT3_CGMBC:
|
|
case MAX77693_MUIC_IRQ_INT3_OVP:
|
|
case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR:
|
|
case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED:
|
|
case MAX77693_MUIC_IRQ_INT3_BAT_DET:
|
|
break;
|
|
default:
|
|
dev_err(info->dev, "muic interrupt: irq %d occurred\n",
|
|
irq_type);
|
|
mutex_unlock(&info->mutex);
|
|
return;
|
|
}
|
|
|
|
if (ret < 0)
|
|
dev_err(info->dev, "failed to handle MUIC interrupt\n");
|
|
|
|
mutex_unlock(&info->mutex);
|
|
|
|
return;
|
|
}
|
|
|
|
static irqreturn_t max77693_muic_irq_handler(int irq, void *data)
|
|
{
|
|
struct max77693_muic_info *info = data;
|
|
|
|
info->irq = irq;
|
|
schedule_work(&info->irq_work);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static struct regmap_config max77693_muic_regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
};
|
|
|
|
static int max77693_muic_detect_accessory(struct max77693_muic_info *info)
|
|
{
|
|
int ret = 0;
|
|
int adc;
|
|
int chg_type;
|
|
bool attached;
|
|
|
|
mutex_lock(&info->mutex);
|
|
|
|
/* Read STATUSx register to detect accessory */
|
|
ret = regmap_bulk_read(info->max77693->regmap_muic,
|
|
MAX77693_MUIC_REG_STATUS1, info->status, 2);
|
|
if (ret) {
|
|
dev_err(info->dev, "failed to read MUIC register\n");
|
|
mutex_unlock(&info->mutex);
|
|
return ret;
|
|
}
|
|
|
|
adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC,
|
|
&attached);
|
|
if (attached && adc != MAX77693_MUIC_ADC_OPEN) {
|
|
ret = max77693_muic_adc_handler(info);
|
|
if (ret < 0) {
|
|
dev_err(info->dev, "Cannot detect accessory\n");
|
|
mutex_unlock(&info->mutex);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG,
|
|
&attached);
|
|
if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) {
|
|
ret = max77693_muic_chg_handler(info);
|
|
if (ret < 0) {
|
|
dev_err(info->dev, "Cannot detect charger accessory\n");
|
|
mutex_unlock(&info->mutex);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&info->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void max77693_muic_detect_cable_wq(struct work_struct *work)
|
|
{
|
|
struct max77693_muic_info *info = container_of(to_delayed_work(work),
|
|
struct max77693_muic_info, wq_detcable);
|
|
|
|
max77693_muic_detect_accessory(info);
|
|
}
|
|
|
|
static int max77693_muic_probe(struct platform_device *pdev)
|
|
{
|
|
struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent);
|
|
struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev);
|
|
struct max77693_muic_info *info;
|
|
struct max77693_reg_data *init_data;
|
|
int num_init_data;
|
|
int delay_jiffies;
|
|
int ret;
|
|
int i;
|
|
unsigned int id;
|
|
|
|
info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info),
|
|
GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
info->dev = &pdev->dev;
|
|
info->max77693 = max77693;
|
|
if (info->max77693->regmap_muic) {
|
|
dev_dbg(&pdev->dev, "allocate register map\n");
|
|
} else {
|
|
info->max77693->regmap_muic = devm_regmap_init_i2c(
|
|
info->max77693->muic,
|
|
&max77693_muic_regmap_config);
|
|
if (IS_ERR(info->max77693->regmap_muic)) {
|
|
ret = PTR_ERR(info->max77693->regmap_muic);
|
|
dev_err(max77693->dev,
|
|
"failed to allocate register map: %d\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Register input device for button of dock device */
|
|
info->dock = devm_input_allocate_device(&pdev->dev);
|
|
if (!info->dock) {
|
|
dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__);
|
|
return -ENOMEM;
|
|
}
|
|
info->dock->name = "max77693-muic/dock";
|
|
info->dock->phys = "max77693-muic/extcon";
|
|
info->dock->dev.parent = &pdev->dev;
|
|
|
|
__set_bit(EV_REP, info->dock->evbit);
|
|
|
|
input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP);
|
|
input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN);
|
|
input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE);
|
|
input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG);
|
|
input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG);
|
|
|
|
ret = input_register_device(info->dock);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "Cannot register input device error(%d)\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
platform_set_drvdata(pdev, info);
|
|
mutex_init(&info->mutex);
|
|
|
|
INIT_WORK(&info->irq_work, max77693_muic_irq_work);
|
|
|
|
/* Support irq domain for MAX77693 MUIC device */
|
|
for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) {
|
|
struct max77693_muic_irq *muic_irq = &muic_irqs[i];
|
|
unsigned int virq = 0;
|
|
|
|
virq = regmap_irq_get_virq(max77693->irq_data_muic,
|
|
muic_irq->irq);
|
|
if (!virq)
|
|
return -EINVAL;
|
|
muic_irq->virq = virq;
|
|
|
|
ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
|
|
max77693_muic_irq_handler,
|
|
IRQF_NO_SUSPEND,
|
|
muic_irq->name, info);
|
|
if (ret) {
|
|
dev_err(&pdev->dev,
|
|
"failed: irq request (IRQ: %d,"
|
|
" error :%d)\n",
|
|
muic_irq->irq, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Initialize extcon device */
|
|
info->edev = devm_extcon_dev_allocate(&pdev->dev,
|
|
max77693_extcon_cable);
|
|
if (IS_ERR(info->edev)) {
|
|
dev_err(&pdev->dev, "failed to allocate memory for extcon\n");
|
|
return -ENOMEM;
|
|
}
|
|
info->edev->name = DEV_NAME;
|
|
|
|
ret = devm_extcon_dev_register(&pdev->dev, info->edev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to register extcon device\n");
|
|
return ret;
|
|
}
|
|
|
|
/* Initialize MUIC register by using platform data or default data */
|
|
if (pdata && pdata->muic_data) {
|
|
init_data = pdata->muic_data->init_data;
|
|
num_init_data = pdata->muic_data->num_init_data;
|
|
} else {
|
|
init_data = default_init_data;
|
|
num_init_data = ARRAY_SIZE(default_init_data);
|
|
}
|
|
|
|
for (i = 0; i < num_init_data; i++) {
|
|
enum max77693_irq_source irq_src
|
|
= MAX77693_IRQ_GROUP_NR;
|
|
|
|
regmap_write(info->max77693->regmap_muic,
|
|
init_data[i].addr,
|
|
init_data[i].data);
|
|
|
|
switch (init_data[i].addr) {
|
|
case MAX77693_MUIC_REG_INTMASK1:
|
|
irq_src = MUIC_INT1;
|
|
break;
|
|
case MAX77693_MUIC_REG_INTMASK2:
|
|
irq_src = MUIC_INT2;
|
|
break;
|
|
case MAX77693_MUIC_REG_INTMASK3:
|
|
irq_src = MUIC_INT3;
|
|
break;
|
|
}
|
|
|
|
if (irq_src < MAX77693_IRQ_GROUP_NR)
|
|
info->max77693->irq_masks_cur[irq_src]
|
|
= init_data[i].data;
|
|
}
|
|
|
|
if (pdata && pdata->muic_data) {
|
|
struct max77693_muic_platform_data *muic_pdata
|
|
= pdata->muic_data;
|
|
|
|
/*
|
|
* Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
|
|
* h/w path of COMP2/COMN1 on CONTROL1 register.
|
|
*/
|
|
if (muic_pdata->path_uart)
|
|
info->path_uart = muic_pdata->path_uart;
|
|
else
|
|
info->path_uart = CONTROL1_SW_UART;
|
|
|
|
if (muic_pdata->path_usb)
|
|
info->path_usb = muic_pdata->path_usb;
|
|
else
|
|
info->path_usb = CONTROL1_SW_USB;
|
|
|
|
/*
|
|
* Default delay time for detecting cable state
|
|
* after certain time.
|
|
*/
|
|
if (muic_pdata->detcable_delay_ms)
|
|
delay_jiffies =
|
|
msecs_to_jiffies(muic_pdata->detcable_delay_ms);
|
|
else
|
|
delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
|
|
} else {
|
|
info->path_usb = CONTROL1_SW_USB;
|
|
info->path_uart = CONTROL1_SW_UART;
|
|
delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
|
|
}
|
|
|
|
/* Set initial path for UART */
|
|
max77693_muic_set_path(info, info->path_uart, true);
|
|
|
|
/* Check revision number of MUIC device*/
|
|
ret = regmap_read(info->max77693->regmap_muic,
|
|
MAX77693_MUIC_REG_ID, &id);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "failed to read revision number\n");
|
|
return ret;
|
|
}
|
|
dev_info(info->dev, "device ID : 0x%x\n", id);
|
|
|
|
/* Set ADC debounce time */
|
|
max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS);
|
|
|
|
/*
|
|
* Detect accessory after completing the initialization of platform
|
|
*
|
|
* - Use delayed workqueue to detect cable state and then
|
|
* notify cable state to notifiee/platform through uevent.
|
|
* After completing the booting of platform, the extcon provider
|
|
* driver should notify cable state to upper layer.
|
|
*/
|
|
INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq);
|
|
queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
|
|
delay_jiffies);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int max77693_muic_remove(struct platform_device *pdev)
|
|
{
|
|
struct max77693_muic_info *info = platform_get_drvdata(pdev);
|
|
|
|
cancel_work_sync(&info->irq_work);
|
|
input_unregister_device(info->dock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver max77693_muic_driver = {
|
|
.driver = {
|
|
.name = DEV_NAME,
|
|
},
|
|
.probe = max77693_muic_probe,
|
|
.remove = max77693_muic_remove,
|
|
};
|
|
|
|
module_platform_driver(max77693_muic_driver);
|
|
|
|
MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver");
|
|
MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:extcon-max77693");
|