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Merge tag 'extcon-for-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-next

Browse Source 
Chanwoo writes:
	extcon: updates for v3.9

	This patchset add a few new feature of extcon-max8997
	and fix minor issue of extcon-max8997/77693.

	Update extcon-max8997 driver
	- Consolidate duplicate code
	- Set default uart/usb path for internal line of muic device
	- Set default ADC debounce time
	- Use wq to check cable state after certain delay
	- Code clean to move defined constant to header file
	- Make max8997_extcon_cable static

	Update extcon-max77693 driver
	- Make max77693_extcon_cable static
This commit is contained in:
Greg Kroah-Hartman
2013-02-13 15:50:11 -08:00
parent 19d3243e79 af5eb1a132
commit 40262275f0
4 changed files with 565 additions and 250 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/extcon/extcon-max77693.c
View File

@@ -185,7 +185,7 @@ enum {
_EXTCON_CABLE_NUM,
};
const char *max77693_extcon_cable[] = {
static const char *max77693_extcon_cable[] = {
[EXTCON_CABLE_USB] = "USB",
[EXTCON_CABLE_USB_HOST] = "USB-Host",
[EXTCON_CABLE_TA] = "TA",

724
drivers/extcon/extcon-max8997.c
View File

@@ -29,51 +29,14 @@
#include <linux/irqdomain.h>
#define DEV_NAME "max8997-muic"
#define DELAY_MS_DEFAULT 20000 /* unit: millisecond */
/* MAX8997-MUIC STATUS1 register */
#define STATUS1_ADC_SHIFT 0
#define STATUS1_ADCLOW_SHIFT 5
#define STATUS1_ADCERR_SHIFT 6
#define STATUS1_ADC_MASK (0x1f << STATUS1_ADC_SHIFT)
#define STATUS1_ADCLOW_MASK (0x1 << STATUS1_ADCLOW_SHIFT)
#define STATUS1_ADCERR_MASK (0x1 << STATUS1_ADCERR_SHIFT)
/* MAX8997-MUIC STATUS2 register */
#define STATUS2_CHGTYP_SHIFT 0
#define STATUS2_CHGDETRUN_SHIFT 3
#define STATUS2_DCDTMR_SHIFT 4
#define STATUS2_DBCHG_SHIFT 5
#define STATUS2_VBVOLT_SHIFT 6
#define STATUS2_CHGTYP_MASK (0x7 << STATUS2_CHGTYP_SHIFT)
#define STATUS2_CHGDETRUN_MASK (0x1 << STATUS2_CHGDETRUN_SHIFT)
#define STATUS2_DCDTMR_MASK (0x1 << STATUS2_DCDTMR_SHIFT)
#define STATUS2_DBCHG_MASK (0x1 << STATUS2_DBCHG_SHIFT)
#define STATUS2_VBVOLT_MASK (0x1 << STATUS2_VBVOLT_SHIFT)
/* MAX8997-MUIC STATUS3 register */
#define STATUS3_OVP_SHIFT 2
#define STATUS3_OVP_MASK (0x1 << STATUS3_OVP_SHIFT)
/* MAX8997-MUIC CONTROL1 register */
#define COMN1SW_SHIFT 0
#define COMP2SW_SHIFT 3
#define COMN1SW_MASK (0x7 << COMN1SW_SHIFT)
#define COMP2SW_MASK (0x7 << COMP2SW_SHIFT)
#define SW_MASK (COMP2SW_MASK | COMN1SW_MASK)
#define MAX8997_SW_USB ((1 << COMP2SW_SHIFT) | (1 << COMN1SW_SHIFT))
#define MAX8997_SW_AUDIO ((2 << COMP2SW_SHIFT) | (2 << COMN1SW_SHIFT))
#define MAX8997_SW_UART ((3 << COMP2SW_SHIFT) | (3 << COMN1SW_SHIFT))
#define MAX8997_SW_OPEN ((0 << COMP2SW_SHIFT) | (0 << COMN1SW_SHIFT))
#define MAX8997_ADC_GROUND 0x00
#define MAX8997_ADC_MHL 0x01
#define MAX8997_ADC_JIG_USB_1 0x18
#define MAX8997_ADC_JIG_USB_2 0x19
#define MAX8997_ADC_DESKDOCK 0x1a
#define MAX8997_ADC_JIG_UART 0x1c
#define MAX8997_ADC_CARDOCK 0x1d
#define MAX8997_ADC_OPEN 0x1f
enum max8997_muic_adc_debounce_time {
ADC_DEBOUNCE_TIME_0_5MS = 0, /* 0.5ms */
ADC_DEBOUNCE_TIME_10MS, /* 10ms */
ADC_DEBOUNCE_TIME_25MS, /* 25ms */
ADC_DEBOUNCE_TIME_38_62MS, /* 38.62ms */
};
struct max8997_muic_irq {
unsigned int irq;
@@ -82,61 +45,303 @@ struct max8997_muic_irq {
};
static struct max8997_muic_irq muic_irqs[] = {
{ MAX8997_MUICIRQ_ADCError, "muic-ADC_error" },
{ MAX8997_MUICIRQ_ADCLow, "muic-ADC_low" },
{ MAX8997_MUICIRQ_ADC, "muic-ADC" },
{ MAX8997_MUICIRQ_VBVolt, "muic-VB_voltage" },
{ MAX8997_MUICIRQ_DBChg, "muic-DB_charger" },
{ MAX8997_MUICIRQ_DCDTmr, "muic-DCD_timer" },
{ MAX8997_MUICIRQ_ChgDetRun, "muic-CDR_status" },
{ MAX8997_MUICIRQ_ChgTyp, "muic-charger_type" },
{ MAX8997_MUICIRQ_OVP, "muic-over_voltage" },
{ MAX8997_MUICIRQ_ADCError, "muic-ADCERROR" },
{ MAX8997_MUICIRQ_ADCLow, "muic-ADCLOW" },
{ MAX8997_MUICIRQ_ADC, "muic-ADC" },
{ MAX8997_MUICIRQ_VBVolt, "muic-VBVOLT" },
{ MAX8997_MUICIRQ_DBChg, "muic-DBCHG" },
{ MAX8997_MUICIRQ_DCDTmr, "muic-DCDTMR" },
{ MAX8997_MUICIRQ_ChgDetRun, "muic-CHGDETRUN" },
{ MAX8997_MUICIRQ_ChgTyp, "muic-CHGTYP" },
{ MAX8997_MUICIRQ_OVP, "muic-OVP" },
};
/* Define supported cable type */
enum max8997_muic_acc_type {
MAX8997_MUIC_ADC_GROUND = 0x0,
MAX8997_MUIC_ADC_MHL, /* MHL*/
MAX8997_MUIC_ADC_REMOTE_S1_BUTTON,
MAX8997_MUIC_ADC_REMOTE_S2_BUTTON,
MAX8997_MUIC_ADC_REMOTE_S3_BUTTON,
MAX8997_MUIC_ADC_REMOTE_S4_BUTTON,
MAX8997_MUIC_ADC_REMOTE_S5_BUTTON,
MAX8997_MUIC_ADC_REMOTE_S6_BUTTON,
MAX8997_MUIC_ADC_REMOTE_S7_BUTTON,
MAX8997_MUIC_ADC_REMOTE_S8_BUTTON,
MAX8997_MUIC_ADC_REMOTE_S9_BUTTON,
MAX8997_MUIC_ADC_REMOTE_S10_BUTTON,
MAX8997_MUIC_ADC_REMOTE_S11_BUTTON,
MAX8997_MUIC_ADC_REMOTE_S12_BUTTON,
MAX8997_MUIC_ADC_RESERVED_ACC_1,
MAX8997_MUIC_ADC_RESERVED_ACC_2,
MAX8997_MUIC_ADC_RESERVED_ACC_3,
MAX8997_MUIC_ADC_RESERVED_ACC_4,
MAX8997_MUIC_ADC_RESERVED_ACC_5,
MAX8997_MUIC_ADC_CEA936_AUDIO,
MAX8997_MUIC_ADC_PHONE_POWERED_DEV,
MAX8997_MUIC_ADC_TTY_CONVERTER,
MAX8997_MUIC_ADC_UART_CABLE,
MAX8997_MUIC_ADC_CEA936A_TYPE1_CHG,
MAX8997_MUIC_ADC_FACTORY_MODE_USB_OFF, /* JIG-USB-OFF */
MAX8997_MUIC_ADC_FACTORY_MODE_USB_ON, /* JIG-USB-ON */
MAX8997_MUIC_ADC_AV_CABLE_NOLOAD, /* DESKDOCK */
MAX8997_MUIC_ADC_CEA936A_TYPE2_CHG,
MAX8997_MUIC_ADC_FACTORY_MODE_UART_OFF, /* JIG-UART */
MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON, /* CARDOCK */
MAX8997_MUIC_ADC_AUDIO_MODE_REMOTE,
MAX8997_MUIC_ADC_OPEN, /* OPEN */
};
enum max8997_muic_cable_group {
MAX8997_CABLE_GROUP_ADC = 0,
MAX8997_CABLE_GROUP_ADC_GND,
MAX8997_CABLE_GROUP_CHG,
MAX8997_CABLE_GROUP_VBVOLT,
};
enum max8997_muic_usb_type {
MAX8997_USB_HOST,
MAX8997_USB_DEVICE,
};
enum max8997_muic_charger_type {
MAX8997_CHARGER_TYPE_NONE = 0,
MAX8997_CHARGER_TYPE_USB,
MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT,
MAX8997_CHARGER_TYPE_DEDICATED_CHG,
MAX8997_CHARGER_TYPE_500MA,
MAX8997_CHARGER_TYPE_1A,
MAX8997_CHARGER_TYPE_DEAD_BATTERY = 7,
};
struct max8997_muic_info {
struct device *dev;
struct i2c_client *muic;
struct max8997_muic_platform_data *muic_pdata;
struct extcon_dev *edev;
int prev_cable_type;
int prev_chg_type;
u8 status[2];
int irq;
struct work_struct irq_work;
enum max8997_muic_charger_type pre_charger_type;
int pre_adc;
struct mutex mutex;
struct extcon_dev *edev;
struct max8997_muic_platform_data *muic_pdata;
enum max8997_muic_charger_type pre_charger_type;
/*
* 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.
*/
struct delayed_work wq_detcable;
/*
* Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
* h/w path of COMP2/COMN1 on CONTROL1 register.
*/
int path_usb;
int path_uart;
};
const char *max8997_extcon_cable[] = {
[0] = "USB",
[1] = "USB-Host",
[2] = "TA",
[3] = "Fast-charger",
[4] = "Slow-charger",
[5] = "Charge-downstream",
[6] = "MHL",
[7] = "Dock-desk",
[8] = "Dock-card",
[9] = "JIG",
enum {
EXTCON_CABLE_USB = 0,
EXTCON_CABLE_USB_HOST,
EXTCON_CABLE_TA,
EXTCON_CABLE_FAST_CHARGER,
EXTCON_CABLE_SLOW_CHARGER,
EXTCON_CABLE_CHARGE_DOWNSTREAM,
EXTCON_CABLE_MHL,
EXTCON_CABLE_DOCK_DESK,
EXTCON_CABLE_DOCK_CARD,
EXTCON_CABLE_JIG,
_EXTCON_CABLE_NUM,
};
static const char *max8997_extcon_cable[] = {
[EXTCON_CABLE_USB] = "USB",
[EXTCON_CABLE_USB_HOST] = "USB-Host",
[EXTCON_CABLE_TA] = "TA",
[EXTCON_CABLE_FAST_CHARGER] = "Fast-charger",
[EXTCON_CABLE_SLOW_CHARGER] = "Slow-charger",
[EXTCON_CABLE_CHARGE_DOWNSTREAM] = "Charge-downstream",
[EXTCON_CABLE_MHL] = "MHL",
[EXTCON_CABLE_DOCK_DESK] = "Dock-Desk",
[EXTCON_CABLE_DOCK_CARD] = "Dock-Card",
[EXTCON_CABLE_JIG] = "JIG",
NULL,
};
/*
* max8997_muic_set_debounce_time - Set the debounce time of ADC
* @info: the instance including private data of max8997 MUIC
* @time: the debounce time of ADC
*/
static int max8997_muic_set_debounce_time(struct max8997_muic_info *info,
enum max8997_muic_adc_debounce_time time)
{
int ret;
switch (time) {
case ADC_DEBOUNCE_TIME_0_5MS:
case ADC_DEBOUNCE_TIME_10MS:
case ADC_DEBOUNCE_TIME_25MS:
case ADC_DEBOUNCE_TIME_38_62MS:
ret = max8997_update_reg(info->muic,
MAX8997_MUIC_REG_CONTROL3,
time << CONTROL3_ADCDBSET_SHIFT,
CONTROL3_ADCDBSET_MASK);
if (ret) {
dev_err(info->dev, "failed to set ADC debounce time\n");
return -EAGAIN;
}
break;
default:
dev_err(info->dev, "invalid ADC debounce time\n");
return -EINVAL;
}
return 0;
};
/*
* max8997_muic_set_path - Set hardware line according to attached cable
* @info: the instance including private data of max8997 MUIC
* @value: the path according to attached cable
* @attached: the state of cable (true:attached, false:detached)
*
* The max8997 MUIC device share outside H/W line among a varity of cables,
* so this function set internal path of H/W line according to the type of
* attached cable.
*/
static int max8997_muic_set_path(struct max8997_muic_info *info,
u8 val, bool attached)
{
int ret = 0;
u8 ctrl1, ctrl2 = 0;
if (attached)
ctrl1 = val;
else
ctrl1 = CONTROL1_SW_OPEN;
ret = max8997_update_reg(info->muic,
MAX8997_MUIC_REG_CONTROL1, ctrl1, COMP_SW_MASK);
if (ret < 0) {
dev_err(info->dev, "failed to update MUIC register\n");
return -EAGAIN;
}
if (attached)
ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */
else
ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */
ret = max8997_update_reg(info->muic,
MAX8997_MUIC_REG_CONTROL2, ctrl2,
CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK);
if (ret < 0) {
dev_err(info->dev, "failed to update MUIC register\n");
return -EAGAIN;
}
dev_info(info->dev,
"CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n",
ctrl1, ctrl2, attached ? "attached" : "detached");
return 0;
}
/*
* max8997_muic_get_cable_type - Return cable type and check cable state
* @info: the instance including private data of max8997 MUIC
* @group: the path according to attached cable
* @attached: store cable state and return
*
* This function check the cable state either attached or detached,
* and then divide precise type of cable according to cable group.
* - MAX8997_CABLE_GROUP_ADC
* - MAX8997_CABLE_GROUP_CHG
*/
static int max8997_muic_get_cable_type(struct max8997_muic_info *info,
enum max8997_muic_cable_group group, bool *attached)
{
int cable_type = 0;
int adc;
int chg_type;
switch (group) {
case MAX8997_CABLE_GROUP_ADC:
/*
* 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;
/*
* Check current cable state/cable type and store cable type
* (info->prev_cable_type) for handling cable when cable is
* detached.
*/
if (adc == MAX8997_MUIC_ADC_OPEN) {
*attached = false;
cable_type = info->prev_cable_type;
info->prev_cable_type = MAX8997_MUIC_ADC_OPEN;
} else {
*attached = true;
cable_type = info->prev_cable_type = adc;
}
break;
case MAX8997_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 == MAX8997_CHARGER_TYPE_NONE) {
*attached = false;
cable_type = info->prev_chg_type;
info->prev_chg_type = MAX8997_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;
default:
dev_err(info->dev, "Unknown cable group (%d)\n", group);
cable_type = -EINVAL;
break;
}
return cable_type;
}
static int max8997_muic_handle_usb(struct max8997_muic_info *info,
enum max8997_muic_usb_type usb_type, bool attached)
{
int ret = 0;
if (usb_type == MAX8997_USB_HOST) {
/* switch to USB */
ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1,
attached ? MAX8997_SW_USB : MAX8997_SW_OPEN,
SW_MASK);
if (ret) {
ret = max8997_muic_set_path(info, info->path_usb, attached);
if (ret < 0) {
dev_err(info->dev, "failed to update muic register\n");
goto out;
return ret;
}
}
@@ -148,41 +353,39 @@ static int max8997_muic_handle_usb(struct max8997_muic_info *info,
extcon_set_cable_state(info->edev, "USB", attached);
break;
default:
ret = -EINVAL;
break;
dev_err(info->dev, "failed to detect %s usb cable\n",
attached ? "attached" : "detached");
return -EINVAL;
}
out:
return ret;
return 0;
}
static int max8997_muic_handle_dock(struct max8997_muic_info *info,
int adc, bool attached)
int cable_type, bool attached)
{
int ret = 0;
/* switch to AUDIO */
ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1,
attached ? MAX8997_SW_AUDIO : MAX8997_SW_OPEN,
SW_MASK);
ret = max8997_muic_set_path(info, CONTROL1_SW_AUDIO, attached);
if (ret) {
dev_err(info->dev, "failed to update muic register\n");
goto out;
return ret;
}
switch (adc) {
case MAX8997_ADC_DESKDOCK:
switch (cable_type) {
case MAX8997_MUIC_ADC_AV_CABLE_NOLOAD:
extcon_set_cable_state(info->edev, "Dock-desk", attached);
break;
case MAX8997_ADC_CARDOCK:
case MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON:
extcon_set_cable_state(info->edev, "Dock-card", attached);
break;
default:
ret = -EINVAL;
break;
dev_err(info->dev, "failed to detect %s dock device\n",
attached ? "attached" : "detached");
return -EINVAL;
}
out:
return ret;
return 0;
}
static int max8997_muic_handle_jig_uart(struct max8997_muic_info *info,
@@ -191,199 +394,188 @@ static int max8997_muic_handle_jig_uart(struct max8997_muic_info *info,
int ret = 0;
/* switch to UART */
ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1,
attached ? MAX8997_SW_UART : MAX8997_SW_OPEN,
SW_MASK);
ret = max8997_muic_set_path(info, info->path_uart, attached);
if (ret) {
dev_err(info->dev, "failed to update muic register\n");
goto out;
return -EINVAL;
}
extcon_set_cable_state(info->edev, "JIG", attached);
out:
return ret;
return 0;
}
static int max8997_muic_handle_adc_detach(struct max8997_muic_info *info)
static int max8997_muic_adc_handler(struct max8997_muic_info *info)
{
int cable_type;
bool attached;
int ret = 0;
switch (info->pre_adc) {
case MAX8997_ADC_GROUND:
ret = max8997_muic_handle_usb(info, MAX8997_USB_HOST, false);
/* Check cable state which is either detached or attached */
cable_type = max8997_muic_get_cable_type(info,
MAX8997_CABLE_GROUP_ADC, &attached);
switch (cable_type) {
case MAX8997_MUIC_ADC_GROUND:
ret = max8997_muic_handle_usb(info, MAX8997_USB_HOST, attached);
if (ret < 0)
return ret;
break;
case MAX8997_ADC_MHL:
extcon_set_cable_state(info->edev, "MHL", false);
case MAX8997_MUIC_ADC_MHL:
extcon_set_cable_state(info->edev, "MHL", attached);
break;
case MAX8997_ADC_JIG_USB_1:
case MAX8997_ADC_JIG_USB_2:
ret = max8997_muic_handle_usb(info, MAX8997_USB_DEVICE, false);
case MAX8997_MUIC_ADC_FACTORY_MODE_USB_OFF:
case MAX8997_MUIC_ADC_FACTORY_MODE_USB_ON:
ret = max8997_muic_handle_usb(info, MAX8997_USB_DEVICE, attached);
if (ret < 0)
return ret;
break;
case MAX8997_ADC_DESKDOCK:
case MAX8997_ADC_CARDOCK:
ret = max8997_muic_handle_dock(info, info->pre_adc, false);
case MAX8997_MUIC_ADC_AV_CABLE_NOLOAD:
case MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON:
ret = max8997_muic_handle_dock(info, cable_type, attached);
if (ret < 0)
return ret;
break;
case MAX8997_ADC_JIG_UART:
ret = max8997_muic_handle_jig_uart(info, false);
break;
default:
break;
}
return ret;
}
static int max8997_muic_handle_adc(struct max8997_muic_info *info, int adc)
{
int ret = 0;
switch (adc) {
case MAX8997_ADC_GROUND:
ret = max8997_muic_handle_usb(info, MAX8997_USB_HOST, true);
break;
case MAX8997_ADC_MHL:
extcon_set_cable_state(info->edev, "MHL", true);
break;
case MAX8997_ADC_JIG_USB_1:
case MAX8997_ADC_JIG_USB_2:
ret = max8997_muic_handle_usb(info, MAX8997_USB_DEVICE, true);
break;
case MAX8997_ADC_DESKDOCK:
case MAX8997_ADC_CARDOCK:
ret = max8997_muic_handle_dock(info, adc, true);
break;
case MAX8997_ADC_JIG_UART:
ret = max8997_muic_handle_jig_uart(info, true);
break;
case MAX8997_ADC_OPEN:
ret = max8997_muic_handle_adc_detach(info);
break;
default:
ret = -EINVAL;
goto out;
}
info->pre_adc = adc;
out:
return ret;
}
static int max8997_muic_handle_charger_type_detach(
struct max8997_muic_info *info)
{
switch (info->pre_charger_type) {
case MAX8997_CHARGER_TYPE_USB:
extcon_set_cable_state(info->edev, "USB", false);
break;
case MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT:
extcon_set_cable_state(info->edev, "Charge-downstream", false);
break;
case MAX8997_CHARGER_TYPE_DEDICATED_CHG:
extcon_set_cable_state(info->edev, "TA", false);
break;
case MAX8997_CHARGER_TYPE_500MA:
extcon_set_cable_state(info->edev, "Slow-charger", false);
break;
case MAX8997_CHARGER_TYPE_1A:
extcon_set_cable_state(info->edev, "Fast-charger", false);
case MAX8997_MUIC_ADC_FACTORY_MODE_UART_OFF:
ret = max8997_muic_handle_jig_uart(info, attached);
break;
case MAX8997_MUIC_ADC_REMOTE_S1_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S2_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S3_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S4_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S5_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S6_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S7_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S8_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S9_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S10_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S11_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S12_BUTTON:
case MAX8997_MUIC_ADC_RESERVED_ACC_1:
case MAX8997_MUIC_ADC_RESERVED_ACC_2:
case MAX8997_MUIC_ADC_RESERVED_ACC_3:
case MAX8997_MUIC_ADC_RESERVED_ACC_4:
case MAX8997_MUIC_ADC_RESERVED_ACC_5:
case MAX8997_MUIC_ADC_CEA936_AUDIO:
case MAX8997_MUIC_ADC_PHONE_POWERED_DEV:
case MAX8997_MUIC_ADC_TTY_CONVERTER:
case MAX8997_MUIC_ADC_UART_CABLE:
case MAX8997_MUIC_ADC_CEA936A_TYPE1_CHG:
case MAX8997_MUIC_ADC_CEA936A_TYPE2_CHG:
case MAX8997_MUIC_ADC_AUDIO_MODE_REMOTE:
/*
* This cable isn't used in general case if it is specially
* needed to detect additional cable, should implement
* proper operation when this cable is attached/detached.
*/
dev_info(info->dev,
"cable is %s but it isn't used (type:0x%x)\n",
attached ? "attached" : "detached", cable_type);
return -EAGAIN;
default:
dev_err(info->dev,
"failed to detect %s unknown cable (type:0x%x)\n",
attached ? "attached" : "detached", cable_type);
return -EINVAL;
break;
}
return 0;
}
static int max8997_muic_handle_charger_type(struct max8997_muic_info *info,
enum max8997_muic_charger_type charger_type)
static int max8997_muic_chg_handler(struct max8997_muic_info *info)
{
u8 adc;
int ret;
int chg_type;
bool attached;
int adc;
ret = max8997_read_reg(info->muic, MAX8997_MUIC_REG_STATUS1, &adc);
if (ret) {
dev_err(info->dev, "failed to read muic register\n");
goto out;
}
chg_type = max8997_muic_get_cable_type(info,
MAX8997_CABLE_GROUP_CHG, &attached);
switch (charger_type) {
switch (chg_type) {
case MAX8997_CHARGER_TYPE_NONE:
ret = max8997_muic_handle_charger_type_detach(info);
break;
case MAX8997_CHARGER_TYPE_USB:
if ((adc & STATUS1_ADC_MASK) == MAX8997_ADC_OPEN) {
adc = info->status[0] & STATUS1_ADC_MASK;
adc >>= STATUS1_ADC_SHIFT;
if ((adc & STATUS1_ADC_MASK) == MAX8997_MUIC_ADC_OPEN) {
max8997_muic_handle_usb(info,
MAX8997_USB_DEVICE, true);
MAX8997_USB_DEVICE, attached);
}
break;
case MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT:
extcon_set_cable_state(info->edev, "Charge-downstream", true);
extcon_set_cable_state(info->edev, "Charge-downstream", attached);
break;
case MAX8997_CHARGER_TYPE_DEDICATED_CHG:
extcon_set_cable_state(info->edev, "TA", true);
extcon_set_cable_state(info->edev, "TA", attached);
break;
case MAX8997_CHARGER_TYPE_500MA:
extcon_set_cable_state(info->edev, "Slow-charger", true);
extcon_set_cable_state(info->edev, "Slow-charger", attached);
break;
case MAX8997_CHARGER_TYPE_1A:
extcon_set_cable_state(info->edev, "Fast-charger", true);
extcon_set_cable_state(info->edev, "Fast-charger", attached);
break;
default:
ret = -EINVAL;
goto out;
dev_err(info->dev,
"failed to detect %s unknown chg cable (type:0x%x)\n",
attached ? "attached" : "detached", chg_type);
return -EINVAL;
}
info->pre_charger_type = charger_type;
out:
return ret;
return 0;
}
static void max8997_muic_irq_work(struct work_struct *work)
{
struct max8997_muic_info *info = container_of(work,
struct max8997_muic_info, irq_work);
u8 status[2];
u8 adc, chg_type;
int irq_type = 0;
int i, ret;
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 = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1,
2, status);
2, info->status);
if (ret) {
dev_err(info->dev, "failed to read muic register\n");
mutex_unlock(&info->mutex);
return;
}
dev_dbg(info->dev, "%s: STATUS1:0x%x, 2:0x%x\n", __func__,
status[0], status[1]);
for (i = 0 ; i < ARRAY_SIZE(muic_irqs) ; i++)
if (info->irq == muic_irqs[i].virq)
irq_type = muic_irqs[i].irq;
switch (irq_type) {
case MAX8997_MUICIRQ_ADCError:
case MAX8997_MUICIRQ_ADCLow:
case MAX8997_MUICIRQ_ADC:
adc = status[0] & STATUS1_ADC_MASK;
adc >>= STATUS1_ADC_SHIFT;
max8997_muic_handle_adc(info, adc);
/* Handle all of cable except for charger cable */
ret = max8997_muic_adc_handler(info);
break;
case MAX8997_MUICIRQ_VBVolt:
case MAX8997_MUICIRQ_DBChg:
case MAX8997_MUICIRQ_DCDTmr:
case MAX8997_MUICIRQ_ChgDetRun:
case MAX8997_MUICIRQ_ChgTyp:
chg_type = status[1] & STATUS2_CHGTYP_MASK;
chg_type >>= STATUS2_CHGTYP_SHIFT;
max8997_muic_handle_charger_type(info, chg_type);
/* Handle charger cable */
ret = max8997_muic_chg_handler(info);
break;
case MAX8997_MUICIRQ_OVP:
break;
default:
dev_info(info->dev, "misc interrupt: irq %d occurred\n",
irq_type);
break;
mutex_unlock(&info->mutex);
return;
}
if (ret < 0)
dev_err(info->dev, "failed to handle MUIC interrupt\n");
mutex_unlock(&info->mutex);
return;
@@ -401,29 +593,60 @@ static irqreturn_t max8997_muic_irq_handler(int irq, void *data)
return IRQ_HANDLED;
}
static void max8997_muic_detect_dev(struct max8997_muic_info *info)
static int max8997_muic_detect_dev(struct max8997_muic_info *info)
{
int ret;
u8 status[2], adc, chg_type;
int ret = 0;
int adc;
int chg_type;
bool attached;
ret = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1,
2, status);
mutex_lock(&info->mutex);
/* Read STATUSx register to detect accessory */
ret = max8997_bulk_read(info->muic,
MAX8997_MUIC_REG_STATUS1, 2, info->status);
if (ret) {
dev_err(info->dev, "failed to read muic register\n");
return;
dev_err(info->dev, "failed to read MUIC register\n");
mutex_unlock(&info->mutex);
return -EINVAL;
}
dev_info(info->dev, "STATUS1:0x%x, STATUS2:0x%x\n",
status[0], status[1]);
adc = max8997_muic_get_cable_type(info, MAX8997_CABLE_GROUP_ADC,
&attached);
if (attached && adc != MAX8997_MUIC_ADC_OPEN) {
ret = max8997_muic_adc_handler(info);
if (ret < 0) {
dev_err(info->dev, "Cannot detect ADC cable\n");
mutex_unlock(&info->mutex);
return ret;
}
}
adc = status[0] & STATUS1_ADC_MASK;
adc >>= STATUS1_ADC_SHIFT;
chg_type = max8997_muic_get_cable_type(info, MAX8997_CABLE_GROUP_CHG,
&attached);
if (attached && chg_type != MAX8997_CHARGER_TYPE_NONE) {
ret = max8997_muic_chg_handler(info);
if (ret < 0) {
dev_err(info->dev, "Cannot detect charger cable\n");
mutex_unlock(&info->mutex);
return ret;
}
}
chg_type = status[1] & STATUS2_CHGTYP_MASK;
chg_type >>= STATUS2_CHGTYP_SHIFT;
mutex_unlock(&info->mutex);
max8997_muic_handle_adc(info, adc);
max8997_muic_handle_charger_type(info, chg_type);
return 0;
}
static void max8997_muic_detect_cable_wq(struct work_struct *work)
{
struct max8997_muic_info *info = container_of(to_delayed_work(work),
struct max8997_muic_info, wq_detcable);
int ret;
ret = max8997_muic_detect_dev(info);
if (ret < 0)
pr_err("failed to detect cable type\n");
}
static int max8997_muic_probe(struct platform_device *pdev)
@@ -431,6 +654,7 @@ static int max8997_muic_probe(struct platform_device *pdev)
struct max8997_dev *max8997 = dev_get_drvdata(pdev->dev.parent);
struct max8997_platform_data *pdata = dev_get_platdata(max8997->dev);
struct max8997_muic_info *info;
int delay_jiffies;
int ret, i;
info = devm_kzalloc(&pdev->dev, sizeof(struct max8997_muic_info),
@@ -498,10 +722,42 @@ static int max8997_muic_probe(struct platform_device *pdev)
}
}
/* Initial device detection */
max8997_muic_detect_dev(info);
/*
* Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
* h/w path of COMP2/COMN1 on CONTROL1 register.
*/
if (pdata->muic_pdata->path_uart)
info->path_uart = pdata->muic_pdata->path_uart;
else
info->path_uart = CONTROL1_SW_UART;
return ret;
if (pdata->muic_pdata->path_usb)
info->path_usb = pdata->muic_pdata->path_usb;
else
info->path_usb = CONTROL1_SW_USB;
/* Set initial path for UART */
max8997_muic_set_path(info, info->path_uart, true);
/* Set ADC debounce time */
max8997_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, max8997_muic_detect_cable_wq);
if (pdata->muic_pdata->detcable_delay_ms)
delay_jiffies = msecs_to_jiffies(pdata->muic_pdata->detcable_delay_ms);
else
delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
schedule_delayed_work(&info->wq_detcable, delay_jiffies);
return 0;
err_irq:
while (--i >= 0)

64
include/linux/mfd/max8997-private.h
View File

@@ -194,6 +194,70 @@ enum max8997_muic_reg {
MAX8997_MUIC_REG_END = 0xf,
};
/* MAX8997-MUIC STATUS1 register */
#define STATUS1_ADC_SHIFT 0
#define STATUS1_ADCLOW_SHIFT 5
#define STATUS1_ADCERR_SHIFT 6
#define STATUS1_ADC_MASK (0x1f << STATUS1_ADC_SHIFT)
#define STATUS1_ADCLOW_MASK (0x1 << STATUS1_ADCLOW_SHIFT)
#define STATUS1_ADCERR_MASK (0x1 << STATUS1_ADCERR_SHIFT)
/* MAX8997-MUIC STATUS2 register */
#define STATUS2_CHGTYP_SHIFT 0
#define STATUS2_CHGDETRUN_SHIFT 3
#define STATUS2_DCDTMR_SHIFT 4
#define STATUS2_DBCHG_SHIFT 5
#define STATUS2_VBVOLT_SHIFT 6
#define STATUS2_CHGTYP_MASK (0x7 << STATUS2_CHGTYP_SHIFT)
#define STATUS2_CHGDETRUN_MASK (0x1 << STATUS2_CHGDETRUN_SHIFT)
#define STATUS2_DCDTMR_MASK (0x1 << STATUS2_DCDTMR_SHIFT)
#define STATUS2_DBCHG_MASK (0x1 << STATUS2_DBCHG_SHIFT)
#define STATUS2_VBVOLT_MASK (0x1 << STATUS2_VBVOLT_SHIFT)
/* MAX8997-MUIC STATUS3 register */
#define STATUS3_OVP_SHIFT 2
#define STATUS3_OVP_MASK (0x1 << STATUS3_OVP_SHIFT)
/* MAX8997-MUIC CONTROL1 register */
#define COMN1SW_SHIFT 0
#define COMP2SW_SHIFT 3
#define COMN1SW_MASK (0x7 << COMN1SW_SHIFT)
#define COMP2SW_MASK (0x7 << COMP2SW_SHIFT)
#define COMP_SW_MASK (COMP2SW_MASK | COMN1SW_MASK)
#define CONTROL1_SW_USB ((1 << COMP2SW_SHIFT) \
| (1 << COMN1SW_SHIFT))
#define CONTROL1_SW_AUDIO ((2 << COMP2SW_SHIFT) \
| (2 << COMN1SW_SHIFT))
#define CONTROL1_SW_UART ((3 << COMP2SW_SHIFT) \
| (3 << COMN1SW_SHIFT))
#define CONTROL1_SW_OPEN ((0 << COMP2SW_SHIFT) \
| (0 << COMN1SW_SHIFT))
#define CONTROL2_LOWPWR_SHIFT (0)
#define CONTROL2_ADCEN_SHIFT (1)
#define CONTROL2_CPEN_SHIFT (2)
#define CONTROL2_SFOUTASRT_SHIFT (3)
#define CONTROL2_SFOUTORD_SHIFT (4)
#define CONTROL2_ACCDET_SHIFT (5)
#define CONTROL2_USBCPINT_SHIFT (6)
#define CONTROL2_RCPS_SHIFT (7)
#define CONTROL2_LOWPWR_MASK (0x1 << CONTROL2_LOWPWR_SHIFT)
#define CONTROL2_ADCEN_MASK (0x1 << CONTROL2_ADCEN_SHIFT)
#define CONTROL2_CPEN_MASK (0x1 << CONTROL2_CPEN_SHIFT)
#define CONTROL2_SFOUTASRT_MASK (0x1 << CONTROL2_SFOUTASRT_SHIFT)
#define CONTROL2_SFOUTORD_MASK (0x1 << CONTROL2_SFOUTORD_SHIFT)
#define CONTROL2_ACCDET_MASK (0x1 << CONTROL2_ACCDET_SHIFT)
#define CONTROL2_USBCPINT_MASK (0x1 << CONTROL2_USBCPINT_SHIFT)
#define CONTROL2_RCPS_MASK (0x1 << CONTROL2_RCPS_SHIFT)
#define CONTROL3_JIGSET_SHIFT (0)
#define CONTROL3_BTLDSET_SHIFT (2)
#define CONTROL3_ADCDBSET_SHIFT (4)
#define CONTROL3_JIGSET_MASK (0x3 << CONTROL3_JIGSET_SHIFT)
#define CONTROL3_BTLDSET_MASK (0x3 << CONTROL3_BTLDSET_SHIFT)
#define CONTROL3_ADCDBSET_MASK (0x3 << CONTROL3_ADCDBSET_SHIFT)
enum max8997_haptic_reg {
MAX8997_HAPTIC_REG_GENERAL = 0x00,
MAX8997_HAPTIC_REG_CONF1 = 0x01,

25
include/linux/mfd/max8997.h
View File

@@ -78,21 +78,6 @@ struct max8997_regulator_data {
struct device_node *reg_node;
};
enum max8997_muic_usb_type {
MAX8997_USB_HOST,
MAX8997_USB_DEVICE,
};
enum max8997_muic_charger_type {
MAX8997_CHARGER_TYPE_NONE = 0,
MAX8997_CHARGER_TYPE_USB,
MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT,
MAX8997_CHARGER_TYPE_DEDICATED_CHG,
MAX8997_CHARGER_TYPE_500MA,
MAX8997_CHARGER_TYPE_1A,
MAX8997_CHARGER_TYPE_DEAD_BATTERY = 7,
};
struct max8997_muic_reg_data {
u8 addr;
u8 data;
@@ -107,6 +92,16 @@ struct max8997_muic_reg_data {
struct max8997_muic_platform_data {
struct max8997_muic_reg_data *init_data;
int num_init_data;
/* Check cable state after certain delay */
int detcable_delay_ms;
/*
* Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
* h/w path of COMP2/COMN1 on CONTROL1 register.
*/
int path_usb;
int path_uart;
};
enum max8997_haptic_motor_type {