#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
+#include <linux/notifier.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#define VBUS_DET_DBNC100 0x02
#define VBUS_DET_DBNC1 0x01
#define OTP_ENABLE_WD 0x01
+#define DROP_COUNT_RESET 0x01
+#define USB_CH_DET 0x01
#define MAIN_CH_INPUT_CURR_SHIFT 4
#define VBUS_IN_CURR_LIM_SHIFT 4
+#define AB8540_VBUS_IN_CURR_LIM_SHIFT 2
#define AUTO_VBUS_IN_CURR_LIM_SHIFT 4
+#define AB8540_AUTO_VBUS_IN_CURR_MASK 0x3F
+#define VBUS_IN_CURR_LIM_RETRY_SET_TIME 30 /* seconds */
#define LED_INDICATOR_PWM_ENA 0x01
#define LED_INDICATOR_PWM_DIS 0x00
/* UsbLineStatus register bit masks */
#define AB8500_USB_LINK_STATUS 0x78
+#define AB8505_USB_LINK_STATUS 0xF8
#define AB8500_STD_HOST_SUSP 0x18
+#define USB_LINK_STATUS_SHIFT 3
/* Watchdog timeout constant */
#define WD_TIMER 0x30 /* 4min */
#define AB8500_SW_CONTROL_FALLBACK 0x03
/* Wait for enumeration before charing in us */
#define WAIT_ACA_RID_ENUMERATION (5 * 1000)
+/*External charger control*/
+#define AB8500_SYS_CHARGER_CONTROL_REG 0x52
+#define EXTERNAL_CHARGER_DISABLE_REG_VAL 0x03
+#define EXTERNAL_CHARGER_ENABLE_REG_VAL 0x07
/* UsbLineStatus register - usb types */
enum ab8500_charger_link_status {
spinlock_t usb_lock;
};
+struct ab8500_charger_max_usb_in_curr {
+ int usb_type_max;
+ int set_max;
+ int calculated_max;
+};
+
/**
* struct ab8500_charger - ab8500 Charger device information
* @dev: Pointer to the structure device
- * @max_usb_in_curr: Max USB charger input current
* @vbus_detected: VBUS detected
* @vbus_detected_start:
* VBUS detected during startup
* @autopower Indicate if we should have automatic pwron after pwrloss
* @autopower_cfg platform specific power config support for "pwron after pwrloss"
* @invalid_charger_detect_state State when forcing AB to use invalid charger
- * @is_usb_host: Indicate if last detected USB type is host
* @is_aca_rid: Incicate if accessory is ACA type
* @current_stepping_sessions:
* Counter for current stepping sessions
* @bm: Platform specific battery management information
* @flags: Structure for information about events triggered
* @usb_state: Structure for usb stack information
+ * @max_usb_in_curr: Max USB charger input current
* @ac_chg: AC charger power supply
* @usb_chg: USB charger power supply
* @ac: Structure that holds the AC charger properties
*/
struct ab8500_charger {
struct device *dev;
- int max_usb_in_curr;
bool vbus_detected;
bool vbus_detected_start;
bool ac_conn;
bool autopower;
bool autopower_cfg;
int invalid_charger_detect_state;
- bool is_usb_host;
int is_aca_rid;
atomic_t current_stepping_sessions;
struct ab8500 *parent;
struct abx500_bm_data *bm;
struct ab8500_charger_event_flags flags;
struct ab8500_charger_usb_state usb_state;
+ struct ab8500_charger_max_usb_in_curr max_usb_in_curr;
struct ux500_charger ac_chg;
struct ux500_charger usb_chg;
struct ab8500_charger_info ac;
if (connected != di->usb.charger_connected) {
dev_dbg(di->dev, "USB connected:%i\n", connected);
di->usb.charger_connected = connected;
+
+ if (!connected)
+ di->flags.vbus_drop_end = false;
+
sysfs_notify(&di->usb_chg.psy.dev->kobj, NULL, "present");
if (connected) {
mutex_lock(&di->charger_attached_mutex);
mutex_unlock(&di->charger_attached_mutex);
- queue_delayed_work(di->charger_wq,
+ if (is_ab8500(di->parent))
+ queue_delayed_work(di->charger_wq,
&di->usb_charger_attached_work,
HZ);
} else {
case USB_STAT_STD_HOST_C_S:
dev_dbg(di->dev, "USB Type - Standard host is "
"detected through USB driver\n");
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
- di->is_usb_host = true;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
di->is_aca_rid = 0;
break;
case USB_STAT_HOST_CHG_HS_CHIRP:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
- di->is_usb_host = true;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
di->is_aca_rid = 0;
break;
case USB_STAT_HOST_CHG_HS:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
- di->is_usb_host = true;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
di->is_aca_rid = 0;
break;
case USB_STAT_ACA_RID_C_HS:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P9;
- di->is_usb_host = false;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P9;
di->is_aca_rid = 0;
break;
case USB_STAT_ACA_RID_A:
* can consume (900mA). Closest level is 500mA
*/
dev_dbg(di->dev, "USB_STAT_ACA_RID_A detected\n");
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
- di->is_usb_host = false;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
di->is_aca_rid = 1;
break;
case USB_STAT_ACA_RID_B:
* Dedicated charger level minus 120mA (20mA for ACA and
* 100mA for potential accessory). Closest level is 1300mA
*/
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P3;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_1P3;
dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status,
- di->max_usb_in_curr);
- di->is_usb_host = false;
+ di->max_usb_in_curr.usb_type_max);
di->is_aca_rid = 1;
break;
case USB_STAT_HOST_CHG_NM:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
- di->is_usb_host = true;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
di->is_aca_rid = 0;
break;
case USB_STAT_DEDICATED_CHG:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P5;
- di->is_usb_host = false;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_1P5;
di->is_aca_rid = 0;
break;
case USB_STAT_ACA_RID_C_HS_CHIRP:
case USB_STAT_ACA_RID_C_NM:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P5;
- di->is_usb_host = false;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_1P5;
di->is_aca_rid = 1;
break;
case USB_STAT_NOT_CONFIGURED:
if (di->vbus_detected) {
di->usb_device_is_unrecognised = true;
dev_dbg(di->dev, "USB Type - Legacy charger.\n");
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P5;
+ di->max_usb_in_curr.usb_type_max =
+ USB_CH_IP_CUR_LVL_1P5;
break;
}
case USB_STAT_HM_IDGND:
dev_err(di->dev, "USB Type - Charging not allowed\n");
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05;
ret = -ENXIO;
break;
case USB_STAT_RESERVED:
"VBUS has collapsed\n");
ret = -ENXIO;
break;
- }
- if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
+ } else {
dev_dbg(di->dev, "USB Type - Charging not allowed\n");
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
+ di->max_usb_in_curr.usb_type_max =
+ USB_CH_IP_CUR_LVL_0P05;
dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d",
- link_status, di->max_usb_in_curr);
+ link_status,
+ di->max_usb_in_curr.usb_type_max);
ret = -ENXIO;
break;
}
case USB_STAT_CARKIT_2:
case USB_STAT_ACA_DOCK_CHARGER:
case USB_STAT_CHARGER_LINE_1:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status,
- di->max_usb_in_curr);
+ di->max_usb_in_curr.usb_type_max);
case USB_STAT_NOT_VALID_LINK:
dev_err(di->dev, "USB Type invalid - try charging anyway\n");
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
break;
default:
dev_err(di->dev, "USB Type - Unknown\n");
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05;
ret = -ENXIO;
break;
};
+ di->max_usb_in_curr.set_max = di->max_usb_in_curr.usb_type_max;
dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d",
- link_status, di->max_usb_in_curr);
+ link_status, di->max_usb_in_curr.set_max);
return ret;
}
dev_err(di->dev, "%s ab8500 read failed\n", __func__);
return ret;
}
- if (is_ab8500(di->parent)) {
+ if (is_ab8500(di->parent))
ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
- AB8500_USB_LINE_STAT_REG, &val);
- } else {
- if (is_ab9540(di->parent) || is_ab8505(di->parent))
- ret = abx500_get_register_interruptible(di->dev,
- AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val);
- }
+ AB8500_USB_LINE_STAT_REG, &val);
+ else
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val);
if (ret < 0) {
dev_err(di->dev, "%s ab8500 read failed\n", __func__);
return ret;
}
/* get the USB type */
- val = (val & AB8500_USB_LINK_STATUS) >> 3;
+ if (is_ab8500(di->parent))
+ val = (val & AB8500_USB_LINK_STATUS) >> USB_LINK_STATUS_SHIFT;
+ else
+ val = (val & AB8505_USB_LINK_STATUS) >> USB_LINK_STATUS_SHIFT;
ret = ab8500_charger_max_usb_curr(di,
(enum ab8500_charger_link_status) val);
*/
/* get the USB type */
- val = (val & AB8500_USB_LINK_STATUS) >> 3;
+ if (is_ab8500(di->parent))
+ val = (val & AB8500_USB_LINK_STATUS) >>
+ USB_LINK_STATUS_SHIFT;
+ else
+ val = (val & AB8505_USB_LINK_STATUS) >>
+ USB_LINK_STATUS_SHIFT;
if (val)
break;
}
4600 ,
};
-/*
- * This array maps the raw hex value to charger current used by the AB8500
- * Values taken from the UM0836
- */
-static int ab8500_charger_current_map[] = {
- 100 ,
- 200 ,
- 300 ,
- 400 ,
- 500 ,
- 600 ,
- 700 ,
- 800 ,
- 900 ,
- 1000 ,
- 1100 ,
- 1200 ,
- 1300 ,
- 1400 ,
- 1500 ,
-};
-
-/*
- * This array maps the raw hex value to VBUS input current used by the AB8500
- * Values taken from the UM0836
- */
-static int ab8500_charger_vbus_in_curr_map[] = {
- USB_CH_IP_CUR_LVL_0P05,
- USB_CH_IP_CUR_LVL_0P09,
- USB_CH_IP_CUR_LVL_0P19,
- USB_CH_IP_CUR_LVL_0P29,
- USB_CH_IP_CUR_LVL_0P38,
- USB_CH_IP_CUR_LVL_0P45,
- USB_CH_IP_CUR_LVL_0P5,
- USB_CH_IP_CUR_LVL_0P6,
- USB_CH_IP_CUR_LVL_0P7,
- USB_CH_IP_CUR_LVL_0P8,
- USB_CH_IP_CUR_LVL_0P9,
- USB_CH_IP_CUR_LVL_1P0,
- USB_CH_IP_CUR_LVL_1P1,
- USB_CH_IP_CUR_LVL_1P3,
- USB_CH_IP_CUR_LVL_1P4,
- USB_CH_IP_CUR_LVL_1P5,
-};
-
static int ab8500_voltage_to_regval(int voltage)
{
int i;
return -1;
}
-static int ab8500_current_to_regval(int curr)
+static int ab8500_current_to_regval(struct ab8500_charger *di, int curr)
{
int i;
- if (curr < ab8500_charger_current_map[0])
+ if (curr < di->bm->chg_output_curr[0])
return 0;
- for (i = 0; i < ARRAY_SIZE(ab8500_charger_current_map); i++) {
- if (curr < ab8500_charger_current_map[i])
+ for (i = 0; i < di->bm->n_chg_out_curr; i++) {
+ if (curr < di->bm->chg_output_curr[i])
return i - 1;
}
/* If not last element, return error */
- i = ARRAY_SIZE(ab8500_charger_current_map) - 1;
- if (curr == ab8500_charger_current_map[i])
+ i = di->bm->n_chg_out_curr - 1;
+ if (curr == di->bm->chg_output_curr[i])
return i;
else
return -1;
}
-static int ab8500_vbus_in_curr_to_regval(int curr)
+static int ab8500_vbus_in_curr_to_regval(struct ab8500_charger *di, int curr)
{
int i;
- if (curr < ab8500_charger_vbus_in_curr_map[0])
+ if (curr < di->bm->chg_input_curr[0])
return 0;
- for (i = 0; i < ARRAY_SIZE(ab8500_charger_vbus_in_curr_map); i++) {
- if (curr < ab8500_charger_vbus_in_curr_map[i])
+ for (i = 0; i < di->bm->n_chg_in_curr; i++) {
+ if (curr < di->bm->chg_input_curr[i])
return i - 1;
}
/* If not last element, return error */
- i = ARRAY_SIZE(ab8500_charger_vbus_in_curr_map) - 1;
- if (curr == ab8500_charger_vbus_in_curr_map[i])
+ i = di->bm->n_chg_in_curr - 1;
+ if (curr == di->bm->chg_input_curr[i])
return i;
else
return -1;
*/
static int ab8500_charger_get_usb_cur(struct ab8500_charger *di)
{
+ int ret = 0;
switch (di->usb_state.usb_current) {
case 100:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P09;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P09;
break;
case 200:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P19;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P19;
break;
case 300:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P29;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P29;
break;
case 400:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P38;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P38;
break;
case 500:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
break;
default:
- di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
- return -1;
+ di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05;
+ ret = -EPERM;
break;
};
- return 0;
+ di->max_usb_in_curr.set_max = di->max_usb_in_curr.usb_type_max;
+ return ret;
+}
+
+/**
+ * ab8500_charger_check_continue_stepping() - Check to allow stepping
+ * @di: pointer to the ab8500_charger structure
+ * @reg: select what charger register to check
+ *
+ * Check if current stepping should be allowed to continue.
+ * Checks if charger source has not collapsed. If it has, further stepping
+ * is not allowed.
+ */
+static bool ab8500_charger_check_continue_stepping(struct ab8500_charger *di,
+ int reg)
+{
+ if (reg == AB8500_USBCH_IPT_CRNTLVL_REG)
+ return !di->flags.vbus_drop_end;
+ else
+ return true;
}
/**
int ich, int reg)
{
int ret = 0;
- int auto_curr_index, curr_index, prev_curr_index, shift_value, i;
+ int curr_index, prev_curr_index, shift_value, i;
u8 reg_value;
u32 step_udelay;
bool no_stepping = false;
case AB8500_MCH_IPT_CURLVL_REG:
shift_value = MAIN_CH_INPUT_CURR_SHIFT;
prev_curr_index = (reg_value >> shift_value);
- curr_index = ab8500_current_to_regval(ich);
+ curr_index = ab8500_current_to_regval(di, ich);
step_udelay = STEP_UDELAY;
if (!di->ac.charger_connected)
no_stepping = true;
break;
case AB8500_USBCH_IPT_CRNTLVL_REG:
- shift_value = VBUS_IN_CURR_LIM_SHIFT;
+ if (is_ab8540(di->parent))
+ shift_value = AB8540_VBUS_IN_CURR_LIM_SHIFT;
+ else
+ shift_value = VBUS_IN_CURR_LIM_SHIFT;
prev_curr_index = (reg_value >> shift_value);
- curr_index = ab8500_vbus_in_curr_to_regval(ich);
+ curr_index = ab8500_vbus_in_curr_to_regval(di, ich);
step_udelay = STEP_UDELAY * 100;
- ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
- AB8500_CH_USBCH_STAT2_REG, ®_value);
- if (ret < 0) {
- dev_err(di->dev, "%s read failed\n", __func__);
- goto exit_set_current;
- }
- auto_curr_index =
- reg_value >> AUTO_VBUS_IN_CURR_LIM_SHIFT;
-
- dev_dbg(di->dev, "%s Auto VBUS curr is %d mA\n",
- __func__,
- ab8500_charger_vbus_in_curr_map[auto_curr_index]);
-
- prev_curr_index = min(prev_curr_index, auto_curr_index);
-
if (!di->usb.charger_connected)
no_stepping = true;
break;
case AB8500_CH_OPT_CRNTLVL_REG:
shift_value = 0;
prev_curr_index = (reg_value >> shift_value);
- curr_index = ab8500_current_to_regval(ich);
+ curr_index = ab8500_current_to_regval(di, ich);
step_udelay = STEP_UDELAY;
if (curr_index && (curr_index - prev_curr_index) > 1)
step_udelay *= 100;
usleep_range(step_udelay, step_udelay * 2);
}
} else {
- for (i = prev_curr_index + 1; i <= curr_index; i++) {
+ bool allow = true;
+ for (i = prev_curr_index + 1; i <= curr_index && allow; i++) {
dev_dbg(di->dev, "curr change_2 to: %x for 0x%02x\n",
(u8)i << shift_value, reg);
ret = abx500_set_register_interruptible(di->dev,
}
if (i != curr_index)
usleep_range(step_udelay, step_udelay * 2);
+
+ allow = ab8500_charger_check_continue_stepping(di, reg);
}
}
/* We should always use to lowest current limit */
min_value = min(di->bm->chg_params->usb_curr_max, ich_in);
+ if (di->max_usb_in_curr.set_max > 0)
+ min_value = min(di->max_usb_in_curr.set_max, min_value);
+
+ if (di->usb_state.usb_current >= 0)
+ min_value = min(di->usb_state.usb_current, min_value);
switch (min_value) {
case 100:
/* Check if the requested voltage or current is valid */
volt_index = ab8500_voltage_to_regval(vset);
- curr_index = ab8500_current_to_regval(iset);
- input_curr_index = ab8500_current_to_regval(
+ curr_index = ab8500_current_to_regval(di, iset);
+ input_curr_index = ab8500_current_to_regval(di,
di->bm->chg_params->ac_curr_max);
if (volt_index < 0 || curr_index < 0 || input_curr_index < 0) {
dev_err(di->dev,
/* Check if the requested voltage or current is valid */
volt_index = ab8500_voltage_to_regval(vset);
- curr_index = ab8500_current_to_regval(ich_out);
+ curr_index = ab8500_current_to_regval(di, ich_out);
if (volt_index < 0 || curr_index < 0) {
dev_err(di->dev,
"Charger voltage or current too high, "
di->usb.charger_online = 1;
/* USBChInputCurr: current that can be drawn from the usb */
- ret = ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr);
+ ret = ab8500_charger_set_vbus_in_curr(di,
+ di->max_usb_in_curr.usb_type_max);
if (ret) {
dev_err(di->dev, "setting USBChInputCurr failed\n");
return ret;
dev_dbg(di->dev, "%s Disabled USB charging\n", __func__);
/* Cancel any pending Vbat check work */
- if (delayed_work_pending(&di->check_vbat_work))
- cancel_delayed_work(&di->check_vbat_work);
+ cancel_delayed_work(&di->check_vbat_work);
}
ab8500_power_supply_changed(di, &di->usb_chg.psy);
return ret;
}
+static int ab8500_external_charger_prepare(struct notifier_block *charger_nb,
+ unsigned long event, void *data)
+{
+ int ret;
+ struct device *dev = data;
+ /*Toggle External charger control pin*/
+ ret = abx500_set_register_interruptible(dev, AB8500_SYS_CTRL1_BLOCK,
+ AB8500_SYS_CHARGER_CONTROL_REG,
+ EXTERNAL_CHARGER_DISABLE_REG_VAL);
+ if (ret < 0) {
+ dev_err(dev, "write reg failed %d\n", ret);
+ goto out;
+ }
+ ret = abx500_set_register_interruptible(dev, AB8500_SYS_CTRL1_BLOCK,
+ AB8500_SYS_CHARGER_CONTROL_REG,
+ EXTERNAL_CHARGER_ENABLE_REG_VAL);
+ if (ret < 0)
+ dev_err(dev, "Write reg failed %d\n", ret);
+
+out:
+ return ret;
+}
+
+/**
+ * ab8500_charger_usb_check_enable() - enable usb charging
+ * @charger: pointer to the ux500_charger structure
+ * @vset: charging voltage
+ * @iset: charger output current
+ *
+ * Check if the VBUS charger has been disconnected and reconnected without
+ * AB8500 rising an interrupt. Returns 0 on success.
+ */
+static int ab8500_charger_usb_check_enable(struct ux500_charger *charger,
+ int vset, int iset)
+{
+ u8 usbch_ctrl1 = 0;
+ int ret = 0;
+
+ struct ab8500_charger *di = to_ab8500_charger_usb_device_info(charger);
+
+ if (!di->usb.charger_connected)
+ return ret;
+
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_USBCH_CTRL1_REG, &usbch_ctrl1);
+ if (ret < 0) {
+ dev_err(di->dev, "ab8500 read failed %d\n", __LINE__);
+ return ret;
+ }
+ dev_dbg(di->dev, "USB charger ctrl: 0x%02x\n", usbch_ctrl1);
+
+ if (!(usbch_ctrl1 & USB_CH_ENA)) {
+ dev_info(di->dev, "Charging has been disabled abnormally and will be re-enabled\n");
+
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CHARGER_CTRL,
+ DROP_COUNT_RESET, DROP_COUNT_RESET);
+ if (ret < 0) {
+ dev_err(di->dev, "ab8500 write failed %d\n", __LINE__);
+ return ret;
+ }
+
+ ret = ab8500_charger_usb_en(&di->usb_chg, true, vset, iset);
+ if (ret < 0) {
+ dev_err(di->dev, "Failed to enable VBUS charger %d\n",
+ __LINE__);
+ return ret;
+ }
+ }
+ return ret;
+}
+
+/**
+ * ab8500_charger_ac_check_enable() - enable usb charging
+ * @charger: pointer to the ux500_charger structure
+ * @vset: charging voltage
+ * @iset: charger output current
+ *
+ * Check if the AC charger has been disconnected and reconnected without
+ * AB8500 rising an interrupt. Returns 0 on success.
+ */
+static int ab8500_charger_ac_check_enable(struct ux500_charger *charger,
+ int vset, int iset)
+{
+ u8 mainch_ctrl1 = 0;
+ int ret = 0;
+
+ struct ab8500_charger *di = to_ab8500_charger_ac_device_info(charger);
+
+ if (!di->ac.charger_connected)
+ return ret;
+
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_MCH_CTRL1, &mainch_ctrl1);
+ if (ret < 0) {
+ dev_err(di->dev, "ab8500 read failed %d\n", __LINE__);
+ return ret;
+ }
+ dev_dbg(di->dev, "AC charger ctrl: 0x%02x\n", mainch_ctrl1);
+
+ if (!(mainch_ctrl1 & MAIN_CH_ENA)) {
+ dev_info(di->dev, "Charging has been disabled abnormally and will be re-enabled\n");
+
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CHARGER_CTRL,
+ DROP_COUNT_RESET, DROP_COUNT_RESET);
+
+ if (ret < 0) {
+ dev_err(di->dev, "ab8500 write failed %d\n", __LINE__);
+ return ret;
+ }
+
+ ret = ab8500_charger_ac_en(&di->usb_chg, true, vset, iset);
+ if (ret < 0) {
+ dev_err(di->dev, "failed to enable AC charger %d\n",
+ __LINE__);
+ return ret;
+ }
+ }
+ return ret;
+}
+
/**
* ab8500_charger_watchdog_kick() - kick charger watchdog
* @di: pointer to the ab8500_charger structure
/* Reset the main and usb drop input current measurement counter */
ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
- AB8500_CHARGER_CTRL,
- 0x1);
+ AB8500_CHARGER_CTRL, DROP_COUNT_RESET);
+ if (ret) {
+ dev_err(di->dev, "%s write failed\n", __func__);
+ return ret;
+ }
+
+ return ret;
+}
+
+/**
+ * ab8540_charger_power_path_enable() - enable usb power path mode
+ * @charger: pointer to the ux500_charger structure
+ * @enable: enable/disable flag
+ *
+ * Enable or disable the power path for usb mode
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8540_charger_power_path_enable(struct ux500_charger *charger,
+ bool enable)
+{
+ int ret;
+ struct ab8500_charger *di;
+
+ if (charger->psy.type == POWER_SUPPLY_TYPE_USB)
+ di = to_ab8500_charger_usb_device_info(charger);
+ else
+ return -ENXIO;
+
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8540_USB_PP_MODE_REG,
+ BUS_POWER_PATH_MODE_ENA, enable);
+ if (ret) {
+ dev_err(di->dev, "%s write failed\n", __func__);
+ return ret;
+ }
+
+ return ret;
+}
+
+
+/**
+ * ab8540_charger_usb_pre_chg_enable() - enable usb pre change
+ * @charger: pointer to the ux500_charger structure
+ * @enable: enable/disable flag
+ *
+ * Enable or disable the pre-chage for usb mode
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8540_charger_usb_pre_chg_enable(struct ux500_charger *charger,
+ bool enable)
+{
+ int ret;
+ struct ab8500_charger *di;
+
+ if (charger->psy.type == POWER_SUPPLY_TYPE_USB)
+ di = to_ab8500_charger_usb_device_info(charger);
+ else
+ return -ENXIO;
+
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8540_USB_PP_CHR_REG,
+ BUS_POWER_PATH_PRECHG_ENA, enable);
if (ret) {
dev_err(di->dev, "%s write failed\n", __func__);
return ret;
di->vbat > VBAT_TRESH_IP_CUR_RED))) {
dev_dbg(di->dev, "Vbat did cross threshold, curr: %d, new: %d,"
- " old: %d\n", di->max_usb_in_curr, di->vbat,
- di->old_vbat);
- ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr);
+ " old: %d\n", di->max_usb_in_curr.usb_type_max,
+ di->vbat, di->old_vbat);
+ ab8500_charger_set_vbus_in_curr(di,
+ di->max_usb_in_curr.usb_type_max);
power_supply_changed(&di->usb_chg.psy);
}
/* Update maximum input current if USB enumeration is not detected */
if (!di->usb.charger_online) {
- ret = ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr);
+ ret = ab8500_charger_set_vbus_in_curr(di,
+ di->max_usb_in_curr.usb_type_max);
if (ret)
return;
}
int detected_chargers;
int ret;
u8 val;
+ u8 link_status;
struct ab8500_charger *di = container_of(work,
struct ab8500_charger, usb_link_status_work);
* to start the charging process. but by jumping
* thru a few hoops it can be forced to start.
*/
- ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
- AB8500_USB_LINE_STAT_REG, &val);
+ if (is_ab8500(di->parent))
+ ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
+ AB8500_USB_LINE_STAT_REG, &val);
+ else
+ ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
+ AB8500_USB_LINK1_STAT_REG, &val);
+
if (ret >= 0)
dev_dbg(di->dev, "UsbLineStatus register = 0x%02x\n", val);
else
dev_dbg(di->dev, "Error reading USB link status\n");
+ if (is_ab8500(di->parent))
+ link_status = AB8500_USB_LINK_STATUS;
+ else
+ link_status = AB8505_USB_LINK_STATUS;
+
if (detected_chargers & USB_PW_CONN) {
- if (((val & AB8500_USB_LINK_STATUS) >> 3) == USB_STAT_NOT_VALID_LINK &&
+ if (((val & link_status) >> USB_LINK_STATUS_SHIFT) ==
+ USB_STAT_NOT_VALID_LINK &&
di->invalid_charger_detect_state == 0) {
- dev_dbg(di->dev, "Invalid charger detected, state= 0\n");
+ dev_dbg(di->dev,
+ "Invalid charger detected, state= 0\n");
/*Enable charger*/
abx500_mask_and_set_register_interruptible(di->dev,
- AB8500_CHARGER, AB8500_USBCH_CTRL1_REG, 0x01, 0x01);
+ AB8500_CHARGER, AB8500_USBCH_CTRL1_REG,
+ USB_CH_ENA, USB_CH_ENA);
/*Enable charger detection*/
- abx500_mask_and_set_register_interruptible(di->dev, AB8500_USB,
- AB8500_MCH_IPT_CURLVL_REG, 0x01, 0x01);
+ abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_USB, AB8500_USB_LINE_CTRL2_REG,
+ USB_CH_DET, USB_CH_DET);
di->invalid_charger_detect_state = 1;
/*exit and wait for new link status interrupt.*/
return;
}
if (di->invalid_charger_detect_state == 1) {
- dev_dbg(di->dev, "Invalid charger detected, state= 1\n");
+ dev_dbg(di->dev,
+ "Invalid charger detected, state= 1\n");
/*Stop charger detection*/
- abx500_mask_and_set_register_interruptible(di->dev, AB8500_USB,
- AB8500_MCH_IPT_CURLVL_REG, 0x01, 0x00);
+ abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_USB, AB8500_USB_LINE_CTRL2_REG,
+ USB_CH_DET, 0x00);
/*Check link status*/
- ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
- AB8500_USB_LINE_STAT_REG, &val);
+ if (is_ab8500(di->parent))
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_USB, AB8500_USB_LINE_STAT_REG,
+ &val);
+ else
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_USB, AB8500_USB_LINK1_STAT_REG,
+ &val);
+
dev_dbg(di->dev, "USB link status= 0x%02x\n",
- (val & AB8500_USB_LINK_STATUS) >> 3);
+ (val & link_status) >> USB_LINK_STATUS_SHIFT);
di->invalid_charger_detect_state = 2;
}
} else {
if (!ab8500_charger_get_usb_cur(di)) {
/* Update maximum input current */
ret = ab8500_charger_set_vbus_in_curr(di,
- di->max_usb_in_curr);
+ di->max_usb_in_curr.usb_type_max);
if (ret)
return;
mutex_lock(&di->charger_attached_mutex);
mutex_unlock(&di->charger_attached_mutex);
- queue_delayed_work(di->charger_wq,
+
+ if (is_ab8500(di->parent))
+ queue_delayed_work(di->charger_wq,
&di->ac_charger_attached_work,
HZ);
return IRQ_HANDLED;
{
struct ab8500_charger *di = container_of(work,
struct ab8500_charger, vbus_drop_end_work.work);
+ int ret, curr;
+ u8 reg_value;
di->flags.vbus_drop_end = false;
abx500_set_register_interruptible(di->dev,
AB8500_CHARGER, AB8500_CHARGER_CTRL, 0x01);
+ if (is_ab8540(di->parent))
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8540_CH_USBCH_STAT3_REG, ®_value);
+ else
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CH_USBCH_STAT2_REG, ®_value);
+ if (ret < 0) {
+ dev_err(di->dev, "%s read failed\n", __func__);
+ return;
+ }
+
+ if (is_ab8540(di->parent))
+ curr = di->bm->chg_input_curr[
+ reg_value & AB8540_AUTO_VBUS_IN_CURR_MASK];
+ else
+ curr = di->bm->chg_input_curr[
+ reg_value >> AUTO_VBUS_IN_CURR_LIM_SHIFT];
+
+ if (di->max_usb_in_curr.calculated_max != curr) {
+ /* USB source is collapsing */
+ di->max_usb_in_curr.calculated_max = curr;
+ dev_dbg(di->dev,
+ "VBUS input current limiting to %d mA\n",
+ di->max_usb_in_curr.calculated_max);
+ } else {
+ /*
+ * USB source can not give more than this amount.
+ * Taking more will collapse the source.
+ */
+ di->max_usb_in_curr.set_max =
+ di->max_usb_in_curr.calculated_max;
+ dev_dbg(di->dev,
+ "VBUS input current limited to %d mA\n",
+ di->max_usb_in_curr.set_max);
+ }
+
if (di->usb.charger_connected)
- ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr);
+ ab8500_charger_set_vbus_in_curr(di,
+ di->max_usb_in_curr.usb_type_max);
}
/**
dev_dbg(di->dev, "VBUS charger drop ended\n");
di->flags.vbus_drop_end = true;
+
+ /*
+ * VBUS might have dropped due to bad connection.
+ * Schedule a new input limit set to the value SW requests.
+ */
queue_delayed_work(di->charger_wq, &di->vbus_drop_end_work,
- round_jiffies(30 * HZ));
+ round_jiffies(VBUS_IN_CURR_LIM_RETRY_SET_TIME * HZ));
return IRQ_HANDLED;
}
static int ab8500_charger_init_hw_registers(struct ab8500_charger *di)
{
int ret = 0;
+ u8 bup_vch_range = 0, vbup33_vrtcn = 0;
/* Setup maximum charger current and voltage for ABB cut2.0 */
if (!is_ab8500_1p1_or_earlier(di->parent)) {
goto out;
}
- ret = abx500_set_register_interruptible(di->dev,
- AB8500_CHARGER,
- AB8500_CH_OPT_CRNTLVL_MAX_REG, CH_OP_CUR_LVL_1P6);
+ if (is_ab8540(di->parent))
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CH_OPT_CRNTLVL_MAX_REG,
+ CH_OP_CUR_LVL_2P);
+ else
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CH_OPT_CRNTLVL_MAX_REG,
+ CH_OP_CUR_LVL_1P6);
if (ret) {
dev_err(di->dev,
"failed to set CH_OPT_CRNTLVL_MAX_REG\n");
}
}
- if (is_ab9540_2p0(di->parent) || is_ab8505_2p0(di->parent))
+ if (is_ab9540_2p0(di->parent) || is_ab9540_3p0(di->parent)
+ || is_ab8505_2p0(di->parent) || is_ab8540(di->parent))
ret = abx500_mask_and_set_register_interruptible(di->dev,
AB8500_CHARGER,
AB8500_USBCH_CTRL2_REG,
goto out;
}
- /* Set charger watchdog timeout */
- ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
- AB8500_CH_WD_TIMER_REG, WD_TIMER);
- if (ret) {
- dev_err(di->dev, "failed to set charger watchdog timeout\n");
- goto out;
- }
-
ret = ab8500_charger_led_en(di, false);
if (ret < 0) {
dev_err(di->dev, "failed to disable LED\n");
}
/* Backup battery voltage and current */
+ if (di->bm->bkup_bat_v > BUP_VCH_SEL_3P1V)
+ bup_vch_range = BUP_VCH_RANGE;
+ if (di->bm->bkup_bat_v == BUP_VCH_SEL_3P3V)
+ vbup33_vrtcn = VBUP33_VRTCN;
+
ret = abx500_set_register_interruptible(di->dev,
AB8500_RTC,
AB8500_RTC_BACKUP_CHG_REG,
- di->bm->bkup_bat_v |
- di->bm->bkup_bat_i);
+ (di->bm->bkup_bat_v & 0x3) | di->bm->bkup_bat_i);
if (ret) {
dev_err(di->dev, "failed to setup backup battery charging\n");
goto out;
}
+ if (is_ab8540(di->parent)) {
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_RTC,
+ AB8500_RTC_CTRL1_REG,
+ bup_vch_range | vbup33_vrtcn);
+ if (ret) {
+ dev_err(di->dev,
+ "failed to setup backup battery charging\n");
+ goto out;
+ }
+ }
/* Enable backup battery charging */
abx500_mask_and_set_register_interruptible(di->dev,
if (ret < 0)
dev_err(di->dev, "%s mask and set failed\n", __func__);
+ if (is_ab8540(di->parent)) {
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8540_USB_PP_MODE_REG,
+ BUS_VSYS_VOL_SELECT_MASK, BUS_VSYS_VOL_SELECT_3P6V);
+ if (ret) {
+ dev_err(di->dev,
+ "failed to setup usb power path vsys voltage\n");
+ goto out;
+ }
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8540_USB_PP_CHR_REG,
+ BUS_PP_PRECHG_CURRENT_MASK, 0);
+ if (ret) {
+ dev_err(di->dev,
+ "failed to setup usb power path prechage current\n");
+ goto out;
+ }
+ }
+
out:
return ret;
}
dev_err(di->dev, "Failed to kick WD!\n");
/* If not already pending start a new timer */
- if (!delayed_work_pending(
- &di->kick_wd_work)) {
- queue_delayed_work(di->charger_wq, &di->kick_wd_work,
- round_jiffies(WD_KICK_INTERVAL));
- }
+ queue_delayed_work(di->charger_wq, &di->kick_wd_work,
+ round_jiffies(WD_KICK_INTERVAL));
}
/* If we still have a HW failure, schedule a new check */
{
struct ab8500_charger *di = platform_get_drvdata(pdev);
- /* Cancel any pending HW failure check */
- if (delayed_work_pending(&di->check_hw_failure_work))
- cancel_delayed_work(&di->check_hw_failure_work);
-
- if (delayed_work_pending(&di->vbus_drop_end_work))
- cancel_delayed_work(&di->vbus_drop_end_work);
+ /* Cancel any pending jobs */
+ cancel_delayed_work(&di->check_hw_failure_work);
+ cancel_delayed_work(&di->vbus_drop_end_work);
flush_delayed_work(&di->attach_work);
flush_delayed_work(&di->usb_charger_attached_work);
#define ab8500_charger_resume NULL
#endif
+static struct notifier_block charger_nb = {
+ .notifier_call = ab8500_external_charger_prepare,
+};
+
static int ab8500_charger_remove(struct platform_device *pdev)
{
struct ab8500_charger *di = platform_get_drvdata(pdev);
/* Delete the work queue */
destroy_workqueue(di->charger_wq);
+ /* Unregister external charger enable notifier */
+ if (!di->ac_chg.enabled)
+ blocking_notifier_chain_unregister(
+ &charger_notifier_list, &charger_nb);
+
flush_scheduled_work();
- if(di->usb_chg.enabled)
+ if (di->usb_chg.enabled)
power_supply_unregister(&di->usb_chg.psy);
-#if !defined(CONFIG_CHARGER_PM2301)
- if(di->ac_chg.enabled)
+
+ if (di->ac_chg.enabled && !di->ac_chg.external)
power_supply_unregister(&di->ac_chg.psy);
-#endif
+
platform_set_drvdata(pdev, NULL);
return 0;
di->ac_chg.psy.num_supplicants = ARRAY_SIZE(supply_interface),
/* ux500_charger sub-class */
di->ac_chg.ops.enable = &ab8500_charger_ac_en;
+ di->ac_chg.ops.check_enable = &ab8500_charger_ac_check_enable;
di->ac_chg.ops.kick_wd = &ab8500_charger_watchdog_kick;
di->ac_chg.ops.update_curr = &ab8500_charger_update_charger_current;
di->ac_chg.max_out_volt = ab8500_charger_voltage_map[
ARRAY_SIZE(ab8500_charger_voltage_map) - 1];
- di->ac_chg.max_out_curr = ab8500_charger_current_map[
- ARRAY_SIZE(ab8500_charger_current_map) - 1];
+ di->ac_chg.max_out_curr =
+ di->bm->chg_output_curr[di->bm->n_chg_out_curr - 1];
di->ac_chg.wdt_refresh = CHG_WD_INTERVAL;
di->ac_chg.enabled = di->bm->ac_enabled;
di->ac_chg.external = false;
+ /*notifier for external charger enabling*/
+ if (!di->ac_chg.enabled)
+ blocking_notifier_chain_register(
+ &charger_notifier_list, &charger_nb);
+
/* USB supply */
/* power_supply base class */
di->usb_chg.psy.name = "ab8500_usb";
di->usb_chg.psy.num_supplicants = ARRAY_SIZE(supply_interface),
/* ux500_charger sub-class */
di->usb_chg.ops.enable = &ab8500_charger_usb_en;
+ di->usb_chg.ops.check_enable = &ab8500_charger_usb_check_enable;
di->usb_chg.ops.kick_wd = &ab8500_charger_watchdog_kick;
di->usb_chg.ops.update_curr = &ab8500_charger_update_charger_current;
+ di->usb_chg.ops.pp_enable = &ab8540_charger_power_path_enable;
+ di->usb_chg.ops.pre_chg_enable = &ab8540_charger_usb_pre_chg_enable;
di->usb_chg.max_out_volt = ab8500_charger_voltage_map[
ARRAY_SIZE(ab8500_charger_voltage_map) - 1];
- di->usb_chg.max_out_curr = ab8500_charger_current_map[
- ARRAY_SIZE(ab8500_charger_current_map) - 1];
+ di->usb_chg.max_out_curr =
+ di->bm->chg_output_curr[di->bm->n_chg_out_curr - 1];
di->usb_chg.wdt_refresh = CHG_WD_INTERVAL;
di->usb_chg.enabled = di->bm->usb_enabled;
di->usb_chg.external = false;
+ di->usb_chg.power_path = di->bm->usb_power_path;
+ di->usb_state.usb_current = -1;
/* Create a work queue for the charger */
di->charger_wq =
}
/* Register AC charger class */
- if(di->ac_chg.enabled) {
+ if (di->ac_chg.enabled) {
ret = power_supply_register(di->dev, &di->ac_chg.psy);
if (ret) {
dev_err(di->dev, "failed to register AC charger\n");
}
/* Register USB charger class */
- if(di->usb_chg.enabled) {
+ if (di->usb_chg.enabled) {
ret = power_supply_register(di->dev, &di->usb_chg.psy);
if (ret) {
dev_err(di->dev, "failed to register USB charger\n");
ch_stat = ab8500_charger_detect_chargers(di, false);
if ((ch_stat & AC_PW_CONN) == AC_PW_CONN) {
- queue_delayed_work(di->charger_wq,
- &di->ac_charger_attached_work,
- HZ);
+ if (is_ab8500(di->parent))
+ queue_delayed_work(di->charger_wq,
+ &di->ac_charger_attached_work,
+ HZ);
}
if ((ch_stat & USB_PW_CONN) == USB_PW_CONN) {
- queue_delayed_work(di->charger_wq,
- &di->usb_charger_attached_work,
- HZ);
+ if (is_ab8500(di->parent))
+ queue_delayed_work(di->charger_wq,
+ &di->usb_charger_attached_work,
+ HZ);
}
mutex_unlock(&di->charger_attached_mutex);
put_usb_phy:
usb_put_phy(di->usb_phy);
free_usb:
- if(di->usb_chg.enabled)
+ if (di->usb_chg.enabled)
power_supply_unregister(&di->usb_chg.psy);
free_ac:
- if(di->ac_chg.enabled)
+ if (di->ac_chg.enabled)
power_supply_unregister(&di->ac_chg.psy);
free_charger_wq:
destroy_workqueue(di->charger_wq);
projects / mirror_ubuntu-artful-kernel.git / blobdiff