2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-23 12:43:55 +08:00
linux-next/drivers/extcon/extcon-sm5502.c

706 lines
19 KiB
C
Raw Normal View History

/*
* extcon-sm5502.c - Silicon Mitus SM5502 extcon drvier to support USB switches
*
* Copyright (c) 2014 Samsung Electronics Co., Ltd
* Author: Chanwoo Choi <cw00.choi@samsung.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/extcon.h>
#include "extcon-sm5502.h"
#define DELAY_MS_DEFAULT 17000 /* unit: millisecond */
struct muic_irq {
unsigned int irq;
const char *name;
unsigned int virq;
};
struct reg_data {
u8 reg;
unsigned int val;
bool invert;
};
struct sm5502_muic_info {
struct device *dev;
struct extcon_dev *edev;
struct i2c_client *i2c;
struct regmap *regmap;
struct regmap_irq_chip_data *irq_data;
struct muic_irq *muic_irqs;
unsigned int num_muic_irqs;
int irq;
bool irq_attach;
bool irq_detach;
struct work_struct irq_work;
struct reg_data *reg_data;
unsigned int num_reg_data;
struct mutex mutex;
/*
* 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 value of SM5502 register to bring up MUIC device. */
static struct reg_data sm5502_reg_data[] = {
{
.reg = SM5502_REG_CONTROL,
.val = SM5502_REG_CONTROL_MASK_INT_MASK,
.invert = false,
}, {
.reg = SM5502_REG_INTMASK1,
.val = SM5502_REG_INTM1_KP_MASK
| SM5502_REG_INTM1_LKP_MASK
| SM5502_REG_INTM1_LKR_MASK,
.invert = true,
}, {
.reg = SM5502_REG_INTMASK2,
.val = SM5502_REG_INTM2_VBUS_DET_MASK
| SM5502_REG_INTM2_REV_ACCE_MASK
| SM5502_REG_INTM2_ADC_CHG_MASK
| SM5502_REG_INTM2_STUCK_KEY_MASK
| SM5502_REG_INTM2_STUCK_KEY_RCV_MASK
| SM5502_REG_INTM2_MHL_MASK,
.invert = true,
},
{ }
};
/* List of detectable cables */
static const unsigned int sm5502_extcon_cable[] = {
extcon: Use the unique id for external connector instead of string This patch uses the unique id to identify the type of external connector instead of string name. The string name have the many potential issues. So, this patch defines the 'extcon' enumeration which includes all supported external connector on EXTCON subsystem. If new external connector is necessary, the unique id of new connector have to be added in 'extcon' enumeration. There are current supported external connector in 'enum extcon' as following: enum extcon { EXTCON_NONE = 0x0, /* USB external connector */ EXTCON_USB = 0x1, EXTCON_USB_HOST = 0x2, /* Charger external connector */ EXTCON_TA = 0x10, EXTCON_FAST_CHARGER = 0x11, EXTCON_SLOW_CHARGER = 0x12, EXTCON_CHARGE_DOWNSTREAM = 0x13, /* Audio and video external connector */ EXTCON_LINE_IN = 0x20, EXTCON_LINE_OUT = 0x21, EXTCON_MICROPHONE = 0x22, EXTCON_HEADPHONE = 0x23, EXTCON_HDMI = 0x30, EXTCON_MHL = 0x31, EXTCON_DVI = 0x32, EXTCON_VGA = 0x33, EXTCON_SPDIF_IN = 0x34, EXTCON_SPDIF_OUT = 0x35, EXTCON_VIDEO_IN = 0x36, EXTCON_VIDEO_OUT = 0x37, /* Miscellaneous external connector */ EXTCON_DOCK = 0x50, EXTCON_JIG = 0x51, EXTCON_MECHANICAL = 0x52, EXTCON_END, }; For example in extcon-arizona.c: To use unique id removes the potential issue about handling the inconsistent name of external connector with string. - Previously, use the string to register the type of arizona jack connector static const char *arizona_cable[] = { "Mechanical", "Microphone", "Headphone", "Line-out", }; - Newly, use the unique id to register the type of arizona jack connector static const enum extcon arizona_cable[] = { EXTCON_MECHANICAL, EXTCON_MICROPHONE, EXTCON_HEADPHONE, EXTCON_LINE_OUT, EXTCON_NONE, }; And this patch modify the prototype of extcon_{get|set}_cable_state_() which uses the 'enum extcon id' instead of 'cable_index'. Because although one more extcon drivers support USB cable, each extcon driver might has the differnt 'cable_index' for USB cable. All extcon drivers can use the unique id number for same external connector with modified extcon_{get|set}_cable_state_(). - Previously, use 'cable_index' on these functions: extcon_get_cable_state_(struct extcon_dev*, int cable_index) extcon_set_cable_state_(struct extcon_dev*, int cable_index, bool state) -Newly, use 'enum extcon id' on these functions: extcon_get_cable_state_(struct extcon_dev*, enum extcon id) extcon_set_cable_state_(struct extcon_dev*, enum extcon id, bool state) Cc: Arnd Bergmann <arnd@arndb.de> Cc: Felipe Balbi <balbi@ti.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Roger Quadros <rogerq@ti.com> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> [arnd: Report the build break about drivers/usb/phy/phy-tahvo.c after using the unique id for external connector insteadf of string] Reported-by: Arnd Bergmann <arnd@arndb.de> [dan.carpenter: Report the build warning of extcon_{set|get}_cable_state_()] Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
2015-04-24 18:16:05 +08:00
EXTCON_USB,
EXTCON_USB_HOST,
EXTCON_TA,
EXTCON_NONE,
};
/* Define supported accessory type */
enum sm5502_muic_acc_type {
SM5502_MUIC_ADC_GROUND = 0x0,
SM5502_MUIC_ADC_SEND_END_BUTTON,
SM5502_MUIC_ADC_REMOTE_S1_BUTTON,
SM5502_MUIC_ADC_REMOTE_S2_BUTTON,
SM5502_MUIC_ADC_REMOTE_S3_BUTTON,
SM5502_MUIC_ADC_REMOTE_S4_BUTTON,
SM5502_MUIC_ADC_REMOTE_S5_BUTTON,
SM5502_MUIC_ADC_REMOTE_S6_BUTTON,
SM5502_MUIC_ADC_REMOTE_S7_BUTTON,
SM5502_MUIC_ADC_REMOTE_S8_BUTTON,
SM5502_MUIC_ADC_REMOTE_S9_BUTTON,
SM5502_MUIC_ADC_REMOTE_S10_BUTTON,
SM5502_MUIC_ADC_REMOTE_S11_BUTTON,
SM5502_MUIC_ADC_REMOTE_S12_BUTTON,
SM5502_MUIC_ADC_RESERVED_ACC_1,
SM5502_MUIC_ADC_RESERVED_ACC_2,
SM5502_MUIC_ADC_RESERVED_ACC_3,
SM5502_MUIC_ADC_RESERVED_ACC_4,
SM5502_MUIC_ADC_RESERVED_ACC_5,
SM5502_MUIC_ADC_AUDIO_TYPE2,
SM5502_MUIC_ADC_PHONE_POWERED_DEV,
SM5502_MUIC_ADC_TTY_CONVERTER,
SM5502_MUIC_ADC_UART_CABLE,
SM5502_MUIC_ADC_TYPE1_CHARGER,
SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB,
SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB,
SM5502_MUIC_ADC_AUDIO_VIDEO_CABLE,
SM5502_MUIC_ADC_TYPE2_CHARGER,
SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART,
SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART,
SM5502_MUIC_ADC_AUDIO_TYPE1,
SM5502_MUIC_ADC_OPEN = 0x1f,
/* The below accessories have same ADC value (0x1f or 0x1e).
So, Device type1 is used to separate specific accessory. */
/* |---------|--ADC| */
/* | [7:5]|[4:0]| */
SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE = 0x3e, /* | 001|11110| */
SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END = 0x5e, /* | 010|11110| */
/* |Dev Type1|--ADC| */
SM5502_MUIC_ADC_OPEN_USB = 0x5f, /* | 010|11111| */
SM5502_MUIC_ADC_OPEN_TA = 0xdf, /* | 110|11111| */
SM5502_MUIC_ADC_OPEN_USB_OTG = 0xff, /* | 111|11111| */
};
/* List of supported interrupt for SM5502 */
static struct muic_irq sm5502_muic_irqs[] = {
{ SM5502_IRQ_INT1_ATTACH, "muic-attach" },
{ SM5502_IRQ_INT1_DETACH, "muic-detach" },
{ SM5502_IRQ_INT1_KP, "muic-kp" },
{ SM5502_IRQ_INT1_LKP, "muic-lkp" },
{ SM5502_IRQ_INT1_LKR, "muic-lkr" },
{ SM5502_IRQ_INT1_OVP_EVENT, "muic-ovp-event" },
{ SM5502_IRQ_INT1_OCP_EVENT, "muic-ocp-event" },
{ SM5502_IRQ_INT1_OVP_OCP_DIS, "muic-ovp-ocp-dis" },
{ SM5502_IRQ_INT2_VBUS_DET, "muic-vbus-det" },
{ SM5502_IRQ_INT2_REV_ACCE, "muic-rev-acce" },
{ SM5502_IRQ_INT2_ADC_CHG, "muic-adc-chg" },
{ SM5502_IRQ_INT2_STUCK_KEY, "muic-stuck-key" },
{ SM5502_IRQ_INT2_STUCK_KEY_RCV, "muic-stuck-key-rcv" },
{ SM5502_IRQ_INT2_MHL, "muic-mhl" },
};
/* Define interrupt list of SM5502 to register regmap_irq */
static const struct regmap_irq sm5502_irqs[] = {
/* INT1 interrupts */
{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_ATTACH_MASK, },
{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_DETACH_MASK, },
{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_KP_MASK, },
{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_LKP_MASK, },
{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_LKR_MASK, },
{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_OVP_EVENT_MASK, },
{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_OCP_EVENT_MASK, },
{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_OVP_OCP_DIS_MASK, },
/* INT2 interrupts */
{ .reg_offset = 1, .mask = SM5502_IRQ_INT2_VBUS_DET_MASK,},
{ .reg_offset = 1, .mask = SM5502_IRQ_INT2_REV_ACCE_MASK, },
{ .reg_offset = 1, .mask = SM5502_IRQ_INT2_ADC_CHG_MASK, },
{ .reg_offset = 1, .mask = SM5502_IRQ_INT2_STUCK_KEY_MASK, },
{ .reg_offset = 1, .mask = SM5502_IRQ_INT2_STUCK_KEY_RCV_MASK, },
{ .reg_offset = 1, .mask = SM5502_IRQ_INT2_MHL_MASK, },
};
static const struct regmap_irq_chip sm5502_muic_irq_chip = {
.name = "sm5502",
.status_base = SM5502_REG_INT1,
.mask_base = SM5502_REG_INTMASK1,
.mask_invert = false,
.num_regs = 2,
.irqs = sm5502_irqs,
.num_irqs = ARRAY_SIZE(sm5502_irqs),
};
/* Define regmap configuration of SM5502 for I2C communication */
static bool sm5502_muic_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case SM5502_REG_INTMASK1:
case SM5502_REG_INTMASK2:
return true;
default:
break;
}
return false;
}
static const struct regmap_config sm5502_muic_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.volatile_reg = sm5502_muic_volatile_reg,
.max_register = SM5502_REG_END,
};
/* Change DM_CON/DP_CON/VBUSIN switch according to cable type */
static int sm5502_muic_set_path(struct sm5502_muic_info *info,
unsigned int con_sw, unsigned int vbus_sw,
bool attached)
{
int ret;
if (!attached) {
con_sw = DM_DP_SWITCH_OPEN;
vbus_sw = VBUSIN_SWITCH_OPEN;
}
switch (con_sw) {
case DM_DP_SWITCH_OPEN:
case DM_DP_SWITCH_USB:
case DM_DP_SWITCH_AUDIO:
case DM_DP_SWITCH_UART:
ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1,
SM5502_REG_MANUAL_SW1_DP_MASK |
SM5502_REG_MANUAL_SW1_DM_MASK,
con_sw);
if (ret < 0) {
dev_err(info->dev,
"cannot update DM_CON/DP_CON switch\n");
return ret;
}
break;
default:
dev_err(info->dev, "Unknown DM_CON/DP_CON switch type (%d)\n",
con_sw);
return -EINVAL;
};
switch (vbus_sw) {
case VBUSIN_SWITCH_OPEN:
case VBUSIN_SWITCH_VBUSOUT:
case VBUSIN_SWITCH_MIC:
case VBUSIN_SWITCH_VBUSOUT_WITH_USB:
ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1,
SM5502_REG_MANUAL_SW1_VBUSIN_MASK,
vbus_sw);
if (ret < 0) {
dev_err(info->dev,
"cannot update VBUSIN switch\n");
return ret;
}
break;
default:
dev_err(info->dev, "Unknown VBUS switch type (%d)\n", vbus_sw);
return -EINVAL;
};
return 0;
}
/* Return cable type of attached or detached accessories */
static unsigned int sm5502_muic_get_cable_type(struct sm5502_muic_info *info)
{
unsigned int cable_type = -1, adc, dev_type1;
int ret;
/* Read ADC value according to external cable or button */
ret = regmap_read(info->regmap, SM5502_REG_ADC, &adc);
if (ret) {
dev_err(info->dev, "failed to read ADC register\n");
return ret;
}
/*
* If ADC is SM5502_MUIC_ADC_GROUND(0x0), external cable hasn't
* connected with to MUIC device.
*/
cable_type = adc & SM5502_REG_ADC_MASK;
if (cable_type == SM5502_MUIC_ADC_GROUND)
return SM5502_MUIC_ADC_GROUND;
switch (cable_type) {
case SM5502_MUIC_ADC_GROUND:
case SM5502_MUIC_ADC_SEND_END_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S1_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S2_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S3_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S4_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S5_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S6_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S7_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S8_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S9_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S10_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S11_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S12_BUTTON:
case SM5502_MUIC_ADC_RESERVED_ACC_1:
case SM5502_MUIC_ADC_RESERVED_ACC_2:
case SM5502_MUIC_ADC_RESERVED_ACC_3:
case SM5502_MUIC_ADC_RESERVED_ACC_4:
case SM5502_MUIC_ADC_RESERVED_ACC_5:
case SM5502_MUIC_ADC_AUDIO_TYPE2:
case SM5502_MUIC_ADC_PHONE_POWERED_DEV:
case SM5502_MUIC_ADC_TTY_CONVERTER:
case SM5502_MUIC_ADC_UART_CABLE:
case SM5502_MUIC_ADC_TYPE1_CHARGER:
case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB:
case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB:
case SM5502_MUIC_ADC_AUDIO_VIDEO_CABLE:
case SM5502_MUIC_ADC_TYPE2_CHARGER:
case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART:
case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART:
break;
case SM5502_MUIC_ADC_AUDIO_TYPE1:
/*
* Check whether cable type is
* SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE
* or SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END
* by using Button event.
*/
break;
case SM5502_MUIC_ADC_OPEN:
ret = regmap_read(info->regmap, SM5502_REG_DEV_TYPE1,
&dev_type1);
if (ret) {
dev_err(info->dev, "failed to read DEV_TYPE1 reg\n");
return ret;
}
switch (dev_type1) {
case SM5502_REG_DEV_TYPE1_USB_SDP_MASK:
cable_type = SM5502_MUIC_ADC_OPEN_USB;
break;
case SM5502_REG_DEV_TYPE1_DEDICATED_CHG_MASK:
cable_type = SM5502_MUIC_ADC_OPEN_TA;
break;
case SM5502_REG_DEV_TYPE1_USB_OTG_MASK:
cable_type = SM5502_MUIC_ADC_OPEN_USB_OTG;
break;
default:
dev_dbg(info->dev,
"cannot identify the cable type: adc(0x%x)\n",
adc);
return -EINVAL;
};
break;
default:
dev_err(info->dev,
"failed to identify the cable type: adc(0x%x)\n", adc);
return -EINVAL;
};
return cable_type;
}
static int sm5502_muic_cable_handler(struct sm5502_muic_info *info,
bool attached)
{
static unsigned int prev_cable_type = SM5502_MUIC_ADC_GROUND;
unsigned int cable_type = SM5502_MUIC_ADC_GROUND;
unsigned int con_sw = DM_DP_SWITCH_OPEN;
unsigned int vbus_sw = VBUSIN_SWITCH_OPEN;
unsigned int id;
int ret;
/* Get the type of attached or detached cable */
if (attached)
cable_type = sm5502_muic_get_cable_type(info);
else
cable_type = prev_cable_type;
prev_cable_type = cable_type;
switch (cable_type) {
case SM5502_MUIC_ADC_OPEN_USB:
extcon: Use the unique id for external connector instead of string This patch uses the unique id to identify the type of external connector instead of string name. The string name have the many potential issues. So, this patch defines the 'extcon' enumeration which includes all supported external connector on EXTCON subsystem. If new external connector is necessary, the unique id of new connector have to be added in 'extcon' enumeration. There are current supported external connector in 'enum extcon' as following: enum extcon { EXTCON_NONE = 0x0, /* USB external connector */ EXTCON_USB = 0x1, EXTCON_USB_HOST = 0x2, /* Charger external connector */ EXTCON_TA = 0x10, EXTCON_FAST_CHARGER = 0x11, EXTCON_SLOW_CHARGER = 0x12, EXTCON_CHARGE_DOWNSTREAM = 0x13, /* Audio and video external connector */ EXTCON_LINE_IN = 0x20, EXTCON_LINE_OUT = 0x21, EXTCON_MICROPHONE = 0x22, EXTCON_HEADPHONE = 0x23, EXTCON_HDMI = 0x30, EXTCON_MHL = 0x31, EXTCON_DVI = 0x32, EXTCON_VGA = 0x33, EXTCON_SPDIF_IN = 0x34, EXTCON_SPDIF_OUT = 0x35, EXTCON_VIDEO_IN = 0x36, EXTCON_VIDEO_OUT = 0x37, /* Miscellaneous external connector */ EXTCON_DOCK = 0x50, EXTCON_JIG = 0x51, EXTCON_MECHANICAL = 0x52, EXTCON_END, }; For example in extcon-arizona.c: To use unique id removes the potential issue about handling the inconsistent name of external connector with string. - Previously, use the string to register the type of arizona jack connector static const char *arizona_cable[] = { "Mechanical", "Microphone", "Headphone", "Line-out", }; - Newly, use the unique id to register the type of arizona jack connector static const enum extcon arizona_cable[] = { EXTCON_MECHANICAL, EXTCON_MICROPHONE, EXTCON_HEADPHONE, EXTCON_LINE_OUT, EXTCON_NONE, }; And this patch modify the prototype of extcon_{get|set}_cable_state_() which uses the 'enum extcon id' instead of 'cable_index'. Because although one more extcon drivers support USB cable, each extcon driver might has the differnt 'cable_index' for USB cable. All extcon drivers can use the unique id number for same external connector with modified extcon_{get|set}_cable_state_(). - Previously, use 'cable_index' on these functions: extcon_get_cable_state_(struct extcon_dev*, int cable_index) extcon_set_cable_state_(struct extcon_dev*, int cable_index, bool state) -Newly, use 'enum extcon id' on these functions: extcon_get_cable_state_(struct extcon_dev*, enum extcon id) extcon_set_cable_state_(struct extcon_dev*, enum extcon id, bool state) Cc: Arnd Bergmann <arnd@arndb.de> Cc: Felipe Balbi <balbi@ti.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Roger Quadros <rogerq@ti.com> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> [arnd: Report the build break about drivers/usb/phy/phy-tahvo.c after using the unique id for external connector insteadf of string] Reported-by: Arnd Bergmann <arnd@arndb.de> [dan.carpenter: Report the build warning of extcon_{set|get}_cable_state_()] Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
2015-04-24 18:16:05 +08:00
id = EXTCON_USB;
con_sw = DM_DP_SWITCH_USB;
vbus_sw = VBUSIN_SWITCH_VBUSOUT_WITH_USB;
break;
case SM5502_MUIC_ADC_OPEN_TA:
extcon: Use the unique id for external connector instead of string This patch uses the unique id to identify the type of external connector instead of string name. The string name have the many potential issues. So, this patch defines the 'extcon' enumeration which includes all supported external connector on EXTCON subsystem. If new external connector is necessary, the unique id of new connector have to be added in 'extcon' enumeration. There are current supported external connector in 'enum extcon' as following: enum extcon { EXTCON_NONE = 0x0, /* USB external connector */ EXTCON_USB = 0x1, EXTCON_USB_HOST = 0x2, /* Charger external connector */ EXTCON_TA = 0x10, EXTCON_FAST_CHARGER = 0x11, EXTCON_SLOW_CHARGER = 0x12, EXTCON_CHARGE_DOWNSTREAM = 0x13, /* Audio and video external connector */ EXTCON_LINE_IN = 0x20, EXTCON_LINE_OUT = 0x21, EXTCON_MICROPHONE = 0x22, EXTCON_HEADPHONE = 0x23, EXTCON_HDMI = 0x30, EXTCON_MHL = 0x31, EXTCON_DVI = 0x32, EXTCON_VGA = 0x33, EXTCON_SPDIF_IN = 0x34, EXTCON_SPDIF_OUT = 0x35, EXTCON_VIDEO_IN = 0x36, EXTCON_VIDEO_OUT = 0x37, /* Miscellaneous external connector */ EXTCON_DOCK = 0x50, EXTCON_JIG = 0x51, EXTCON_MECHANICAL = 0x52, EXTCON_END, }; For example in extcon-arizona.c: To use unique id removes the potential issue about handling the inconsistent name of external connector with string. - Previously, use the string to register the type of arizona jack connector static const char *arizona_cable[] = { "Mechanical", "Microphone", "Headphone", "Line-out", }; - Newly, use the unique id to register the type of arizona jack connector static const enum extcon arizona_cable[] = { EXTCON_MECHANICAL, EXTCON_MICROPHONE, EXTCON_HEADPHONE, EXTCON_LINE_OUT, EXTCON_NONE, }; And this patch modify the prototype of extcon_{get|set}_cable_state_() which uses the 'enum extcon id' instead of 'cable_index'. Because although one more extcon drivers support USB cable, each extcon driver might has the differnt 'cable_index' for USB cable. All extcon drivers can use the unique id number for same external connector with modified extcon_{get|set}_cable_state_(). - Previously, use 'cable_index' on these functions: extcon_get_cable_state_(struct extcon_dev*, int cable_index) extcon_set_cable_state_(struct extcon_dev*, int cable_index, bool state) -Newly, use 'enum extcon id' on these functions: extcon_get_cable_state_(struct extcon_dev*, enum extcon id) extcon_set_cable_state_(struct extcon_dev*, enum extcon id, bool state) Cc: Arnd Bergmann <arnd@arndb.de> Cc: Felipe Balbi <balbi@ti.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Roger Quadros <rogerq@ti.com> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> [arnd: Report the build break about drivers/usb/phy/phy-tahvo.c after using the unique id for external connector insteadf of string] Reported-by: Arnd Bergmann <arnd@arndb.de> [dan.carpenter: Report the build warning of extcon_{set|get}_cable_state_()] Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
2015-04-24 18:16:05 +08:00
id = EXTCON_TA;
con_sw = DM_DP_SWITCH_OPEN;
vbus_sw = VBUSIN_SWITCH_VBUSOUT;
break;
case SM5502_MUIC_ADC_OPEN_USB_OTG:
extcon: Use the unique id for external connector instead of string This patch uses the unique id to identify the type of external connector instead of string name. The string name have the many potential issues. So, this patch defines the 'extcon' enumeration which includes all supported external connector on EXTCON subsystem. If new external connector is necessary, the unique id of new connector have to be added in 'extcon' enumeration. There are current supported external connector in 'enum extcon' as following: enum extcon { EXTCON_NONE = 0x0, /* USB external connector */ EXTCON_USB = 0x1, EXTCON_USB_HOST = 0x2, /* Charger external connector */ EXTCON_TA = 0x10, EXTCON_FAST_CHARGER = 0x11, EXTCON_SLOW_CHARGER = 0x12, EXTCON_CHARGE_DOWNSTREAM = 0x13, /* Audio and video external connector */ EXTCON_LINE_IN = 0x20, EXTCON_LINE_OUT = 0x21, EXTCON_MICROPHONE = 0x22, EXTCON_HEADPHONE = 0x23, EXTCON_HDMI = 0x30, EXTCON_MHL = 0x31, EXTCON_DVI = 0x32, EXTCON_VGA = 0x33, EXTCON_SPDIF_IN = 0x34, EXTCON_SPDIF_OUT = 0x35, EXTCON_VIDEO_IN = 0x36, EXTCON_VIDEO_OUT = 0x37, /* Miscellaneous external connector */ EXTCON_DOCK = 0x50, EXTCON_JIG = 0x51, EXTCON_MECHANICAL = 0x52, EXTCON_END, }; For example in extcon-arizona.c: To use unique id removes the potential issue about handling the inconsistent name of external connector with string. - Previously, use the string to register the type of arizona jack connector static const char *arizona_cable[] = { "Mechanical", "Microphone", "Headphone", "Line-out", }; - Newly, use the unique id to register the type of arizona jack connector static const enum extcon arizona_cable[] = { EXTCON_MECHANICAL, EXTCON_MICROPHONE, EXTCON_HEADPHONE, EXTCON_LINE_OUT, EXTCON_NONE, }; And this patch modify the prototype of extcon_{get|set}_cable_state_() which uses the 'enum extcon id' instead of 'cable_index'. Because although one more extcon drivers support USB cable, each extcon driver might has the differnt 'cable_index' for USB cable. All extcon drivers can use the unique id number for same external connector with modified extcon_{get|set}_cable_state_(). - Previously, use 'cable_index' on these functions: extcon_get_cable_state_(struct extcon_dev*, int cable_index) extcon_set_cable_state_(struct extcon_dev*, int cable_index, bool state) -Newly, use 'enum extcon id' on these functions: extcon_get_cable_state_(struct extcon_dev*, enum extcon id) extcon_set_cable_state_(struct extcon_dev*, enum extcon id, bool state) Cc: Arnd Bergmann <arnd@arndb.de> Cc: Felipe Balbi <balbi@ti.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Roger Quadros <rogerq@ti.com> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> [arnd: Report the build break about drivers/usb/phy/phy-tahvo.c after using the unique id for external connector insteadf of string] Reported-by: Arnd Bergmann <arnd@arndb.de> [dan.carpenter: Report the build warning of extcon_{set|get}_cable_state_()] Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
2015-04-24 18:16:05 +08:00
id = EXTCON_USB_HOST;
con_sw = DM_DP_SWITCH_USB;
vbus_sw = VBUSIN_SWITCH_OPEN;
break;
default:
dev_dbg(info->dev,
"cannot handle this cable_type (0x%x)\n", cable_type);
return 0;
};
/* Change internal hardware path(DM_CON/DP_CON, VBUSIN) */
ret = sm5502_muic_set_path(info, con_sw, vbus_sw, attached);
if (ret < 0)
return ret;
/* Change the state of external accessory */
extcon: Use the unique id for external connector instead of string This patch uses the unique id to identify the type of external connector instead of string name. The string name have the many potential issues. So, this patch defines the 'extcon' enumeration which includes all supported external connector on EXTCON subsystem. If new external connector is necessary, the unique id of new connector have to be added in 'extcon' enumeration. There are current supported external connector in 'enum extcon' as following: enum extcon { EXTCON_NONE = 0x0, /* USB external connector */ EXTCON_USB = 0x1, EXTCON_USB_HOST = 0x2, /* Charger external connector */ EXTCON_TA = 0x10, EXTCON_FAST_CHARGER = 0x11, EXTCON_SLOW_CHARGER = 0x12, EXTCON_CHARGE_DOWNSTREAM = 0x13, /* Audio and video external connector */ EXTCON_LINE_IN = 0x20, EXTCON_LINE_OUT = 0x21, EXTCON_MICROPHONE = 0x22, EXTCON_HEADPHONE = 0x23, EXTCON_HDMI = 0x30, EXTCON_MHL = 0x31, EXTCON_DVI = 0x32, EXTCON_VGA = 0x33, EXTCON_SPDIF_IN = 0x34, EXTCON_SPDIF_OUT = 0x35, EXTCON_VIDEO_IN = 0x36, EXTCON_VIDEO_OUT = 0x37, /* Miscellaneous external connector */ EXTCON_DOCK = 0x50, EXTCON_JIG = 0x51, EXTCON_MECHANICAL = 0x52, EXTCON_END, }; For example in extcon-arizona.c: To use unique id removes the potential issue about handling the inconsistent name of external connector with string. - Previously, use the string to register the type of arizona jack connector static const char *arizona_cable[] = { "Mechanical", "Microphone", "Headphone", "Line-out", }; - Newly, use the unique id to register the type of arizona jack connector static const enum extcon arizona_cable[] = { EXTCON_MECHANICAL, EXTCON_MICROPHONE, EXTCON_HEADPHONE, EXTCON_LINE_OUT, EXTCON_NONE, }; And this patch modify the prototype of extcon_{get|set}_cable_state_() which uses the 'enum extcon id' instead of 'cable_index'. Because although one more extcon drivers support USB cable, each extcon driver might has the differnt 'cable_index' for USB cable. All extcon drivers can use the unique id number for same external connector with modified extcon_{get|set}_cable_state_(). - Previously, use 'cable_index' on these functions: extcon_get_cable_state_(struct extcon_dev*, int cable_index) extcon_set_cable_state_(struct extcon_dev*, int cable_index, bool state) -Newly, use 'enum extcon id' on these functions: extcon_get_cable_state_(struct extcon_dev*, enum extcon id) extcon_set_cable_state_(struct extcon_dev*, enum extcon id, bool state) Cc: Arnd Bergmann <arnd@arndb.de> Cc: Felipe Balbi <balbi@ti.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Roger Quadros <rogerq@ti.com> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> [arnd: Report the build break about drivers/usb/phy/phy-tahvo.c after using the unique id for external connector insteadf of string] Reported-by: Arnd Bergmann <arnd@arndb.de> [dan.carpenter: Report the build warning of extcon_{set|get}_cable_state_()] Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
2015-04-24 18:16:05 +08:00
extcon_set_cable_state_(info->edev, id, attached);
return 0;
}
static void sm5502_muic_irq_work(struct work_struct *work)
{
struct sm5502_muic_info *info = container_of(work,
struct sm5502_muic_info, irq_work);
int ret = 0;
if (!info->edev)
return;
mutex_lock(&info->mutex);
/* Detect attached or detached cables */
if (info->irq_attach) {
ret = sm5502_muic_cable_handler(info, true);
info->irq_attach = false;
}
if (info->irq_detach) {
ret = sm5502_muic_cable_handler(info, false);
info->irq_detach = false;
}
if (ret < 0)
dev_err(info->dev, "failed to handle MUIC interrupt\n");
mutex_unlock(&info->mutex);
}
/*
* Sets irq_attach or irq_detach in sm5502_muic_info and returns 0.
* Returns -ESRCH if irq_type does not match registered IRQ for this dev type.
*/
static int sm5502_parse_irq(struct sm5502_muic_info *info, int irq_type)
{
switch (irq_type) {
case SM5502_IRQ_INT1_ATTACH:
info->irq_attach = true;
break;
case SM5502_IRQ_INT1_DETACH:
info->irq_detach = true;
break;
case SM5502_IRQ_INT1_KP:
case SM5502_IRQ_INT1_LKP:
case SM5502_IRQ_INT1_LKR:
case SM5502_IRQ_INT1_OVP_EVENT:
case SM5502_IRQ_INT1_OCP_EVENT:
case SM5502_IRQ_INT1_OVP_OCP_DIS:
case SM5502_IRQ_INT2_VBUS_DET:
case SM5502_IRQ_INT2_REV_ACCE:
case SM5502_IRQ_INT2_ADC_CHG:
case SM5502_IRQ_INT2_STUCK_KEY:
case SM5502_IRQ_INT2_STUCK_KEY_RCV:
case SM5502_IRQ_INT2_MHL:
default:
break;
}
return 0;
}
static irqreturn_t sm5502_muic_irq_handler(int irq, void *data)
{
struct sm5502_muic_info *info = data;
int i, irq_type = -1, ret;
for (i = 0; i < info->num_muic_irqs; i++)
if (irq == info->muic_irqs[i].virq)
irq_type = info->muic_irqs[i].irq;
ret = sm5502_parse_irq(info, irq_type);
if (ret < 0) {
dev_warn(info->dev, "cannot handle is interrupt:%d\n",
irq_type);
return IRQ_HANDLED;
}
schedule_work(&info->irq_work);
return IRQ_HANDLED;
}
static void sm5502_muic_detect_cable_wq(struct work_struct *work)
{
struct sm5502_muic_info *info = container_of(to_delayed_work(work),
struct sm5502_muic_info, wq_detcable);
int ret;
/* Notify the state of connector cable or not */
ret = sm5502_muic_cable_handler(info, true);
if (ret < 0)
dev_warn(info->dev, "failed to detect cable state\n");
}
static void sm5502_init_dev_type(struct sm5502_muic_info *info)
{
unsigned int reg_data, vendor_id, version_id;
int i, ret;
/* To test I2C, Print version_id and vendor_id of SM5502 */
ret = regmap_read(info->regmap, SM5502_REG_DEVICE_ID, &reg_data);
if (ret) {
dev_err(info->dev,
"failed to read DEVICE_ID register: %d\n", ret);
return;
}
vendor_id = ((reg_data & SM5502_REG_DEVICE_ID_VENDOR_MASK) >>
SM5502_REG_DEVICE_ID_VENDOR_SHIFT);
version_id = ((reg_data & SM5502_REG_DEVICE_ID_VERSION_MASK) >>
SM5502_REG_DEVICE_ID_VERSION_SHIFT);
dev_info(info->dev, "Device type: version: 0x%x, vendor: 0x%x\n",
version_id, vendor_id);
/* Initiazle the register of SM5502 device to bring-up */
for (i = 0; i < info->num_reg_data; i++) {
unsigned int val = 0;
if (!info->reg_data[i].invert)
val |= ~info->reg_data[i].val;
else
val = info->reg_data[i].val;
regmap_write(info->regmap, info->reg_data[i].reg, val);
}
}
static int sm5022_muic_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct device_node *np = i2c->dev.of_node;
struct sm5502_muic_info *info;
int i, ret, irq_flags;
if (!np)
return -EINVAL;
info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
i2c_set_clientdata(i2c, info);
info->dev = &i2c->dev;
info->i2c = i2c;
info->irq = i2c->irq;
info->muic_irqs = sm5502_muic_irqs;
info->num_muic_irqs = ARRAY_SIZE(sm5502_muic_irqs);
info->reg_data = sm5502_reg_data;
info->num_reg_data = ARRAY_SIZE(sm5502_reg_data);
mutex_init(&info->mutex);
INIT_WORK(&info->irq_work, sm5502_muic_irq_work);
info->regmap = devm_regmap_init_i2c(i2c, &sm5502_muic_regmap_config);
if (IS_ERR(info->regmap)) {
ret = PTR_ERR(info->regmap);
dev_err(info->dev, "failed to allocate register map: %d\n",
ret);
return ret;
}
/* Support irq domain for SM5502 MUIC device */
irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED;
ret = regmap_add_irq_chip(info->regmap, info->irq, irq_flags, 0,
&sm5502_muic_irq_chip, &info->irq_data);
if (ret != 0) {
dev_err(info->dev, "failed to request IRQ %d: %d\n",
info->irq, ret);
return ret;
}
for (i = 0; i < info->num_muic_irqs; i++) {
struct muic_irq *muic_irq = &info->muic_irqs[i];
int virq = 0;
virq = regmap_irq_get_virq(info->irq_data, muic_irq->irq);
if (virq <= 0)
return -EINVAL;
muic_irq->virq = virq;
ret = devm_request_threaded_irq(info->dev, virq, NULL,
sm5502_muic_irq_handler,
IRQF_NO_SUSPEND,
muic_irq->name, info);
if (ret) {
dev_err(info->dev,
"failed: irq request (IRQ: %d, error :%d)\n",
muic_irq->irq, ret);
return ret;
}
}
/* Allocate extcon device */
info->edev = devm_extcon_dev_allocate(info->dev, sm5502_extcon_cable);
if (IS_ERR(info->edev)) {
dev_err(info->dev, "failed to allocate memory for extcon\n");
return -ENOMEM;
}
/* Register extcon device */
ret = devm_extcon_dev_register(info->dev, info->edev);
if (ret) {
dev_err(info->dev, "failed to register extcon device\n");
return ret;
}
/*
* 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, sm5502_muic_detect_cable_wq);
queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
msecs_to_jiffies(DELAY_MS_DEFAULT));
/* Initialize SM5502 device and print vendor id and version id */
sm5502_init_dev_type(info);
return 0;
}
static int sm5502_muic_i2c_remove(struct i2c_client *i2c)
{
struct sm5502_muic_info *info = i2c_get_clientdata(i2c);
regmap_del_irq_chip(info->irq, info->irq_data);
return 0;
}
static const struct of_device_id sm5502_dt_match[] = {
{ .compatible = "siliconmitus,sm5502-muic" },
{ },
};
MODULE_DEVICE_TABLE(of, sm5502_dt_match);
#ifdef CONFIG_PM_SLEEP
static int sm5502_muic_suspend(struct device *dev)
{
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
struct sm5502_muic_info *info = i2c_get_clientdata(i2c);
enable_irq_wake(info->irq);
return 0;
}
static int sm5502_muic_resume(struct device *dev)
{
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
struct sm5502_muic_info *info = i2c_get_clientdata(i2c);
disable_irq_wake(info->irq);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(sm5502_muic_pm_ops,
sm5502_muic_suspend, sm5502_muic_resume);
static const struct i2c_device_id sm5502_i2c_id[] = {
{ "sm5502", TYPE_SM5502 },
{ }
};
MODULE_DEVICE_TABLE(i2c, sm5502_i2c_id);
static struct i2c_driver sm5502_muic_i2c_driver = {
.driver = {
.name = "sm5502",
.pm = &sm5502_muic_pm_ops,
.of_match_table = sm5502_dt_match,
},
.probe = sm5022_muic_i2c_probe,
.remove = sm5502_muic_i2c_remove,
.id_table = sm5502_i2c_id,
};
static int __init sm5502_muic_i2c_init(void)
{
return i2c_add_driver(&sm5502_muic_i2c_driver);
}
subsys_initcall(sm5502_muic_i2c_init);
MODULE_DESCRIPTION("Silicon Mitus SM5502 Extcon driver");
MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
MODULE_LICENSE("GPL");