* [PATCH 1/4] extcon: sm5502: Add support new SM5502 extcon device driver
2014-05-28 9:39 [PATCH 0/4] extcon: sm5502: Add support SM5502 MUIC driver Chanwoo Choi
@ 2014-05-28 9:39 ` Chanwoo Choi
2014-05-28 9:39 ` [PATCH 2/4] extcon: sm5502: Detect cable state after completing platform booting Chanwoo Choi
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: Chanwoo Choi @ 2014-05-28 9:39 UTC (permalink / raw)
To: linux-kernel; +Cc: myungjoo.ham, kyungmin.park, Chanwoo Choi
This patch add new SM5502 MUIC(Micro-USB Interface Controller) device by using
EXTCON subsystem. The extcon-sm5502 driver is capable of identifying the type
of the external power source and attached accessory. An external power sources,
such as Deticated Charger or a standard USB port, are able to charge the battery
in the smart phone via the connector.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
---
drivers/extcon/Kconfig | 7 +
drivers/extcon/Makefile | 1 +
drivers/extcon/extcon-sm5502.c | 622 +++++++++++++++++++++++++++++++++++++++++
include/linux/extcon/sm5502.h | 264 +++++++++++++++++
4 files changed, 894 insertions(+)
create mode 100644 drivers/extcon/extcon-sm5502.c
create mode 100644 include/linux/extcon/sm5502.h
diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
index 9125eba..69c240b 100644
--- a/drivers/extcon/Kconfig
+++ b/drivers/extcon/Kconfig
@@ -70,4 +70,11 @@ config EXTCON_PALMAS
Say Y here to enable support for USB peripheral and USB host
detection by palmas usb.
+config EXTCON_SM5502
+ tristate "SM5502 EXTCON support"
+ help
+ If you say yes here you get support for the MUIC device of
+ Silicon Mitus SM5502. The SM5502 is a USB port accessory
+ detector and switch.
+
endif # MULTISTATE_SWITCH
diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile
index e48abc6..b38546e 100644
--- a/drivers/extcon/Makefile
+++ b/drivers/extcon/Makefile
@@ -10,3 +10,4 @@ obj-$(CONFIG_EXTCON_MAX14577) += extcon-max14577.o
obj-$(CONFIG_EXTCON_MAX77693) += extcon-max77693.o
obj-$(CONFIG_EXTCON_MAX8997) += extcon-max8997.o
obj-$(CONFIG_EXTCON_PALMAS) += extcon-palmas.o
+obj-$(CONFIG_EXTCON_SM5502) += extcon-sm5502.o
diff --git a/drivers/extcon/extcon-sm5502.c b/drivers/extcon/extcon-sm5502.c
new file mode 100644
index 0000000..ebf3d5c
--- /dev/null
+++ b/drivers/extcon/extcon-sm5502.c
@@ -0,0 +1,622 @@
+/*
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/input.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 <linux/extcon/sm5502.h>
+
+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;
+};
+
+/* 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 */
+enum {
+ EXTCON_CABLE_USB = 0,
+ EXTCON_CABLE_USB_HOST,
+ EXTCON_CABLE_TA,
+
+ EXTCON_CABLE_END,
+};
+
+static const char const *sm5502_extcon_cable[] = {
+ [EXTCON_CABLE_USB] = "USB",
+ [EXTCON_CABLE_USB_HOST] = "USB-Host",
+ [EXTCON_CABLE_TA] = "TA",
+ NULL,
+};
+
+/* 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,
+};
+
+/* 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 &= 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) "
+ "dev_type1(0x%x)\n", adc, dev_type1);
+ 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;
+ const char **cable_names = info->edev->supported_cable;
+ unsigned int cable_type = SM5502_MUIC_ADC_GROUND;
+ unsigned int idx = 0;
+
+ if (!cable_names)
+ return 0;
+
+ /* Get the type of attached or detached cable */
+ if (attached)
+ cable_type = sm5502_muic_get_cable_type(info);
+ else if (!attached)
+ cable_type = prev_cable_type;
+ prev_cable_type = cable_type;
+
+ switch (cable_type) {
+ case SM5502_MUIC_ADC_OPEN_USB:
+ idx = EXTCON_CABLE_USB;
+ break;
+ case SM5502_MUIC_ADC_OPEN_TA:
+ idx = EXTCON_CABLE_TA;
+ break;
+ case SM5502_MUIC_ADC_OPEN_USB_OTG:
+ idx = EXTCON_CABLE_USB_HOST;
+ break;
+ default:
+ dev_dbg(info->dev,
+ "cannot handle this cable_type (0x%x)\n", cable_type);
+ return 0;
+ };
+
+ extcon_set_cable_state(info->edev, cable_names[idx], 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);
+
+ return;
+}
+
+/*
+ * 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_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, ®_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) {
+ dev_err(&i2c->dev, "failed to allocate memory\n");
+ 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];
+ unsigned 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;
+ }
+ info->edev->name = np->name;
+
+ /* 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;
+ }
+
+ /* 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 struct of_device_id sm5502_dt_match[] = {
+ { .compatible = "siliconmitus,sm5502-muic" },
+ { },
+};
+
+#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",
+ .owner = THIS_MODULE,
+ .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");
diff --git a/include/linux/extcon/sm5502.h b/include/linux/extcon/sm5502.h
new file mode 100644
index 0000000..17bd655
--- /dev/null
+++ b/include/linux/extcon/sm5502.h
@@ -0,0 +1,264 @@
+/*
+ * sm5502.h
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __LINUX_EXTCON_SM5502_H
+#define __LINUX_EXTCON_SM5502_H
+
+enum sm5502_types {
+ TYPE_SM5502,
+};
+
+/* SM5502 registers */
+enum sm5502_reg {
+ SM5502_REG_DEVICE_ID = 0x01,
+ SM5502_REG_CONTROL,
+ SM5502_REG_INT1,
+ SM5502_REG_INT2,
+ SM5502_REG_INTMASK1,
+ SM5502_REG_INTMASK2,
+ SM5502_REG_ADC,
+ SM5502_REG_TIMING_SET1,
+ SM5502_REG_TIMING_SET2,
+ SM5502_REG_DEV_TYPE1,
+ SM5502_REG_DEV_TYPE2,
+ SM5502_REG_BUTTON1,
+ SM5502_REG_BUTTON2,
+ SM5502_REG_CAR_KIT_STATUS,
+ SM5502_REG_RSVD1,
+ SM5502_REG_RSVD2,
+ SM5502_REG_RSVD3,
+ SM5502_REG_RSVD4,
+ SM5502_REG_MANUAL_SW1,
+ SM5502_REG_MANUAL_SW2,
+ SM5502_REG_DEV_TYPE3,
+ SM5502_REG_RSVD5,
+ SM5502_REG_RSVD6,
+ SM5502_REG_RSVD7,
+ SM5502_REG_RSVD8,
+ SM5502_REG_RSVD9,
+ SM5502_REG_RESET,
+ SM5502_REG_RSVD10,
+ SM5502_REG_RESERVED_ID1,
+ SM5502_REG_RSVD11,
+ SM5502_REG_RSVD12,
+ SM5502_REG_RESERVED_ID2,
+ SM5502_REG_RSVD13,
+ SM5502_REG_OCP,
+ SM5502_REG_RSVD14,
+ SM5502_REG_RSVD15,
+ SM5502_REG_RSVD16,
+ SM5502_REG_RSVD17,
+ SM5502_REG_RSVD18,
+ SM5502_REG_RSVD19,
+ SM5502_REG_RSVD20,
+ SM5502_REG_RSVD21,
+ SM5502_REG_RSVD22,
+ SM5502_REG_RSVD23,
+ SM5502_REG_RSVD24,
+ SM5502_REG_RSVD25,
+ SM5502_REG_RSVD26,
+ SM5502_REG_RSVD27,
+ SM5502_REG_RSVD28,
+ SM5502_REG_RSVD29,
+ SM5502_REG_RSVD30,
+ SM5502_REG_RSVD31,
+ SM5502_REG_RSVD32,
+ SM5502_REG_RSVD33,
+ SM5502_REG_RSVD34,
+ SM5502_REG_RSVD35,
+ SM5502_REG_RSVD36,
+ SM5502_REG_RESERVED_ID3,
+
+ SM5502_REG_END,
+};
+
+/* Define SM5502 MASK/SHIFT constant */
+#define SM5502_REG_DEVICE_ID_VENDOR_SHIFT 0
+#define SM5502_REG_DEVICE_ID_VERSION_SHIFT 3
+#define SM5502_REG_DEVICE_ID_VENDOR_MASK (0x3 << SM5502_REG_DEVICE_ID_VENDOR_SHIFT)
+#define SM5502_REG_DEVICE_ID_VERSION_MASK (0x1f << SM5502_REG_DEVICE_ID_VERSION_SHIFT)
+
+#define SM5502_REG_CONTROL_MASK_INT_SHIFT 0
+#define SM5502_REG_CONTROL_WAIT_SHIFT 1
+#define SM5502_REG_CONTROL_MANUAL_SW_SHIFT 2
+#define SM5502_REG_CONTROL_RAW_DATA_SHIFT 3
+#define SM5502_REG_CONTROL_SW_OPEN_SHIFT 4
+#define SM5502_REG_CONTROL_MASK_INT_MASK (0x1 << SM5502_REG_CONTROL_MASK_INT_SHIFT)
+#define SM5502_REG_CONTROL_WAIT_MASK (0x1 << SM5502_REG_CONTROL_WAIT_SHIFT)
+#define SM5502_REG_CONTROL_MANUAL_SW_MASK (0x1 << SM5502_REG_CONTROL_MANUAL_SW_SHIFT)
+#define SM5502_REG_CONTROL_RAW_DATA_MASK (0x1 << SM5502_REG_CONTROL_RAW_DATA_SHIFT)
+#define SM5502_REG_CONTROL_SW_OPEN_MASK (0x1 << SM5502_REG_CONTROL_SW_OPEN_SHIFT)
+
+#define SM5502_REG_INTM1_ATTACH_SHIFT 0
+#define SM5502_REG_INTM1_DETACH_SHIFT 1
+#define SM5502_REG_INTM1_KP_SHIFT 2
+#define SM5502_REG_INTM1_LKP_SHIFT 3
+#define SM5502_REG_INTM1_LKR_SHIFT 4
+#define SM5502_REG_INTM1_OVP_EVENT_SHIFT 5
+#define SM5502_REG_INTM1_OCP_EVENT_SHIFT 6
+#define SM5502_REG_INTM1_OVP_OCP_DIS_SHIFT 7
+#define SM5502_REG_INTM1_ATTACH_MASK (0x1 << SM5502_REG_INTM1_ATTACH_SHIFT)
+#define SM5502_REG_INTM1_DETACH_MASK (0x1 << SM5502_REG_INTM1_DETACH_SHIFT)
+#define SM5502_REG_INTM1_KP_MASK (0x1 << SM5502_REG_INTM1_KP_SHIFT)
+#define SM5502_REG_INTM1_LKP_MASK (0x1 << SM5502_REG_INTM1_LKP_SHIFT)
+#define SM5502_REG_INTM1_LKR_MASK (0x1 << SM5502_REG_INTM1_LKR_SHIFT)
+#define SM5502_REG_INTM1_OVP_EVENT_MASK (0x1 << SM5502_REG_INTM1_OVP_EVENT_SHIFT)
+#define SM5502_REG_INTM1_OCP_EVENT_MASK (0x1 << SM5502_REG_INTM1_OCP_EVENT_SHIFT)
+#define SM5502_REG_INTM1_OVP_OCP_DIS_MASK (0x1 << SM5502_REG_INTM1_OVP_OCP_DIS_SHIFT)
+
+#define SM5502_REG_INTM2_VBUS_DET_SHIFT 0
+#define SM5502_REG_INTM2_REV_ACCE_SHIFT 1
+#define SM5502_REG_INTM2_ADC_CHG_SHIFT 2
+#define SM5502_REG_INTM2_STUCK_KEY_SHIFT 3
+#define SM5502_REG_INTM2_STUCK_KEY_RCV_SHIFT 4
+#define SM5502_REG_INTM2_MHL_SHIFT 5
+#define SM5502_REG_INTM2_VBUS_DET_MASK (0x1 << SM5502_REG_INTM2_VBUS_DET_SHIFT)
+#define SM5502_REG_INTM2_REV_ACCE_MASK (0x1 << SM5502_REG_INTM2_REV_ACCE_SHIFT)
+#define SM5502_REG_INTM2_ADC_CHG_MASK (0x1 << SM5502_REG_INTM2_ADC_CHG_SHIFT)
+#define SM5502_REG_INTM2_STUCK_KEY_MASK (0x1 << SM5502_REG_INTM2_STUCK_KEY_SHIFT)
+#define SM5502_REG_INTM2_STUCK_KEY_RCV_MASK (0x1 << SM5502_REG_INTM2_STUCK_KEY_RCV_SHIFT)
+#define SM5502_REG_INTM2_MHL_MASK (0x1 << SM5502_REG_INTM2_MHL_SHIFT)
+
+#define SM5502_REG_ADC_SHIFT 0
+#define SM5502_REG_ADC_MASK (0x1f << SM5502_REG_ADC_SHIFT)
+
+#define SM5502_REG_TIMING_SET1_KEY_PRESS_SHIFT 4
+#define SM5502_REG_TIMING_SET1_KEY_PRESS_MASK (0xf << SM5502_REG_TIMING_SET1_KEY_PRESS_SHIFT)
+#define TIMING_KEY_PRESS_100MS 0x0
+#define TIMING_KEY_PRESS_200MS 0x1
+#define TIMING_KEY_PRESS_300MS 0x2
+#define TIMING_KEY_PRESS_400MS 0x3
+#define TIMING_KEY_PRESS_500MS 0x4
+#define TIMING_KEY_PRESS_600MS 0x5
+#define TIMING_KEY_PRESS_700MS 0x6
+#define TIMING_KEY_PRESS_800MS 0x7
+#define TIMING_KEY_PRESS_900MS 0x8
+#define TIMING_KEY_PRESS_1000MS 0x9
+#define SM5502_REG_TIMING_SET1_ADC_DET_SHIFT 0
+#define SM5502_REG_TIMING_SET1_ADC_DET_MASK (0xf << SM5502_REG_TIMING_SET1_ADC_DET_SHIFT)
+#define TIMING_ADC_DET_50MS 0x0
+#define TIMING_ADC_DET_100MS 0x1
+#define TIMING_ADC_DET_150MS 0x2
+#define TIMING_ADC_DET_200MS 0x3
+#define TIMING_ADC_DET_300MS 0x4
+#define TIMING_ADC_DET_400MS 0x5
+#define TIMING_ADC_DET_500MS 0x6
+#define TIMING_ADC_DET_600MS 0x7
+#define TIMING_ADC_DET_700MS 0x8
+#define TIMING_ADC_DET_800MS 0x9
+#define TIMING_ADC_DET_900MS 0xA
+#define TIMING_ADC_DET_1000MS 0xB
+
+#define SM5502_REG_TIMING_SET2_SW_WAIT_SHIFT 4
+#define SM5502_REG_TIMING_SET2_SW_WAIT_MASK (0xf << SM5502_REG_TIMING_SET2_SW_WAIT_SHIFT)
+#define TIMING_SW_WAIT_10MS 0x0
+#define TIMING_SW_WAIT_30MS 0x1
+#define TIMING_SW_WAIT_50MS 0x2
+#define TIMING_SW_WAIT_70MS 0x3
+#define TIMING_SW_WAIT_90MS 0x4
+#define TIMING_SW_WAIT_110MS 0x5
+#define TIMING_SW_WAIT_130MS 0x6
+#define TIMING_SW_WAIT_150MS 0x7
+#define TIMING_SW_WAIT_170MS 0x8
+#define TIMING_SW_WAIT_190MS 0x9
+#define TIMING_SW_WAIT_210MS 0xA
+#define SM5502_REG_TIMING_SET2_LONG_KEY_SHIFT 0
+#define SM5502_REG_TIMING_SET2_LONG_KEY_MASK (0xf << SM5502_REG_TIMING_SET2_LONG_KEY_SHIFT)
+#define TIMING_LONG_KEY_300MS 0x0
+#define TIMING_LONG_KEY_400MS 0x1
+#define TIMING_LONG_KEY_500MS 0x2
+#define TIMING_LONG_KEY_600MS 0x3
+#define TIMING_LONG_KEY_700MS 0x4
+#define TIMING_LONG_KEY_800MS 0x5
+#define TIMING_LONG_KEY_900MS 0x6
+#define TIMING_LONG_KEY_1000MS 0x7
+#define TIMING_LONG_KEY_1100MS 0x8
+#define TIMING_LONG_KEY_1200MS 0x9
+#define TIMING_LONG_KEY_1300MS 0xA
+#define TIMING_LONG_KEY_1400MS 0xB
+#define TIMING_LONG_KEY_1500MS 0xC
+
+#define SM5502_REG_DEV_TYPE1_AUDIO_TYPE1_SHIFT 0
+#define SM5502_REG_DEV_TYPE1_AUDIO_TYPE2_SHIFT 1
+#define SM5502_REG_DEV_TYPE1_USB_SDP_SHIFT 2
+#define SM5502_REG_DEV_TYPE1_UART_SHIFT 3
+#define SM5502_REG_DEV_TYPE1_CAR_KIT_CHARGER_SHIFT 4
+#define SM5502_REG_DEV_TYPE1_USB_CHG_SHIFT 5
+#define SM5502_REG_DEV_TYPE1_DEDICATED_CHG_SHIFT 6
+#define SM5502_REG_DEV_TYPE1_USB_OTG_SHIFT 7
+#define SM5502_REG_DEV_TYPE1_AUDIO_TYPE1_MASK (0x1 << SM5502_REG_DEV_TYPE1_AUDIO_TYPE1_SHIFT)
+#define SM5502_REG_DEV_TYPE1_AUDIO_TYPE1__MASK (0x1 << SM5502_REG_DEV_TYPE1_AUDIO_TYPE2_SHIFT)
+#define SM5502_REG_DEV_TYPE1_USB_SDP_MASK (0x1 << SM5502_REG_DEV_TYPE1_USB_SDP_SHIFT)
+#define SM5502_REG_DEV_TYPE1_UART_MASK (0x1 << SM5502_REG_DEV_TYPE1_UART_SHIFT)
+#define SM5502_REG_DEV_TYPE1_CAR_KIT_CHARGER_MASK (0x1 << SM5502_REG_DEV_TYPE1_CAR_KIT_CHARGER_SHIFT)
+#define SM5502_REG_DEV_TYPE1_USB_CHG_MASK (0x1 << SM5502_REG_DEV_TYPE1_USB_CHG_SHIFT)
+#define SM5502_REG_DEV_TYPE1_DEDICATED_CHG_MASK (0x1 << SM5502_REG_DEV_TYPE1_DEDICATED_CHG_SHIFT)
+#define SM5502_REG_DEV_TYPE1_USB_OTG_MASK (0x1 << SM5502_REG_DEV_TYPE1_USB_OTG_SHIFT)
+
+#define SM5502_REG_DEV_TYPE2_JIG_USB_ON_SHIFT 0
+#define SM5502_REG_DEV_TYPE2_JIG_USB_OFF_SHIFT 1
+#define SM5502_REG_DEV_TYPE2_JIG_UART_ON_SHIFT 2
+#define SM5502_REG_DEV_TYPE2_JIG_UART_OFF_SHIFT 3
+#define SM5502_REG_DEV_TYPE2_PPD_SHIFT 4
+#define SM5502_REG_DEV_TYPE2_TTY_SHIFT 5
+#define SM5502_REG_DEV_TYPE2_AV_CABLE_SHIFT 6
+#define SM5502_REG_DEV_TYPE2_JIG_USB_ON_MASK (0x1 << SM5502_REG_DEV_TYPE2_JIG_USB_ON_SHIFT)
+#define SM5502_REG_DEV_TYPE2_JIG_USB_OFF_MASK (0x1 << SM5502_REG_DEV_TYPE2_JIG_USB_OFF_SHIFT)
+#define SM5502_REG_DEV_TYPE2_JIG_UART_ON_MASK (0x1 << SM5502_REG_DEV_TYPE2_JIG_UART_ON_SHIFT)
+#define SM5502_REG_DEV_TYPE2_JIG_UART_OFF_MASK (0x1 << SM5502_REG_DEV_TYPE2_JIG_UART_OFF_SHIFT)
+#define SM5502_REG_DEV_TYPE2_PPD_MASK (0x1 << SM5502_REG_DEV_TYPE2_PPD_SHIFT)
+#define SM5502_REG_DEV_TYPE2_TTY_MASK (0x1 << SM5502_REG_DEV_TYPE2_TTY_SHIFT)
+#define SM5502_REG_DEV_TYPE2_AV_CABLE_MASK (0x1 << SM5502_REG_DEV_TYPE2_AV_CABLE_SHIFT)
+
+/* SM5502 Interrupts */
+enum sm5502_irq {
+ /* INT1 */
+ SM5502_IRQ_INT1_ATTACH,
+ SM5502_IRQ_INT1_DETACH,
+ SM5502_IRQ_INT1_KP,
+ SM5502_IRQ_INT1_LKP,
+ SM5502_IRQ_INT1_LKR,
+ SM5502_IRQ_INT1_OVP_EVENT,
+ SM5502_IRQ_INT1_OCP_EVENT,
+ SM5502_IRQ_INT1_OVP_OCP_DIS,
+
+ /* INT2 */
+ SM5502_IRQ_INT2_VBUS_DET,
+ SM5502_IRQ_INT2_REV_ACCE,
+ SM5502_IRQ_INT2_ADC_CHG,
+ SM5502_IRQ_INT2_STUCK_KEY,
+ SM5502_IRQ_INT2_STUCK_KEY_RCV,
+ SM5502_IRQ_INT2_MHL,
+
+ SM5502_IRQ_NUM,
+};
+
+#define SM5502_IRQ_INT1_ATTACH_MASK BIT(0)
+#define SM5502_IRQ_INT1_DETACH_MASK BIT(1)
+#define SM5502_IRQ_INT1_KP_MASK BIT(2)
+#define SM5502_IRQ_INT1_LKP_MASK BIT(3)
+#define SM5502_IRQ_INT1_LKR_MASK BIT(4)
+#define SM5502_IRQ_INT1_OVP_EVENT_MASK BIT(5)
+#define SM5502_IRQ_INT1_OCP_EVENT_MASK BIT(6)
+#define SM5502_IRQ_INT1_OVP_OCP_DIS_MASK BIT(7)
+#define SM5502_IRQ_INT2_VBUS_DET_MASK BIT(0)
+#define SM5502_IRQ_INT2_REV_ACCE_MASK BIT(1)
+#define SM5502_IRQ_INT2_ADC_CHG_MASK BIT(2)
+#define SM5502_IRQ_INT2_STUCK_KEY_MASK BIT(3)
+#define SM5502_IRQ_INT2_STUCK_KEY_RCV_MASK BIT(4)
+#define SM5502_IRQ_INT2_MHL_MASK BIT(5)
+
+#endif /* __LINUX_EXTCON_SM5502_H */
--
1.8.0
^ permalink raw reply related [flat|nested] 6+ messages in thread