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charger-manager: Split _probe funtion to make the code more clean
This patch split _probe function for readability because _probe function is longer than 400 line. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
This commit is contained in:
Chanwoo Choi
Anton Vorontsov
parent
d1c3ed669a
commit
41468a1119
@ -1215,6 +1215,55 @@ static int charger_extcon_init(struct charger_manager *cm,
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return ret;
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}
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/**
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* charger_manager_register_extcon - Register extcon device to recevie state
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* of charger cable.
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* @cm: the Charger Manager representing the battery.
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*
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* This function support EXTCON(External Connector) subsystem to detect the
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* state of charger cables for enabling or disabling charger(regulator) and
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* select the charger cable for charging among a number of external cable
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* according to policy of H/W board.
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*/
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static int charger_manager_register_extcon(struct charger_manager *cm)
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{
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struct charger_desc *desc = cm->desc;
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struct charger_regulator *charger;
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int ret = 0;
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int i;
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int j;
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for (i = 0; i < desc->num_charger_regulators; i++) {
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charger = &desc->charger_regulators[i];
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charger->consumer = regulator_get(cm->dev,
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charger->regulator_name);
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if (charger->consumer == NULL) {
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dev_err(cm->dev, "Cannot find charger(%s)n",
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charger->regulator_name);
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ret = -EINVAL;
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goto err;
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}
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charger->cm = cm;
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for (j = 0; j < charger->num_cables; j++) {
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struct charger_cable *cable = &charger->cables[j];
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ret = charger_extcon_init(cm, cable);
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if (ret < 0) {
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dev_err(cm->dev, "Cannot initialize charger(%s)n",
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charger->regulator_name);
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goto err;
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}
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cable->charger = charger;
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cable->cm = cm;
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}
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}
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err:
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return ret;
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}
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/* help function of sysfs node to control charger(regulator) */
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static ssize_t charger_name_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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@ -1274,7 +1323,7 @@ static ssize_t charger_externally_control_store(struct device *dev,
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for (i = 0; i < desc->num_charger_regulators; i++) {
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if (&desc->charger_regulators[i] != charger &&
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!desc->charger_regulators[i].externally_control) {
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!desc->charger_regulators[i].externally_control) {
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/*
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* At least, one charger is controlled by
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* charger-manager
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@ -1303,13 +1352,107 @@ static ssize_t charger_externally_control_store(struct device *dev,
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return count;
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}
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/**
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* charger_manager_register_sysfs - Register sysfs entry for each charger
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* @cm: the Charger Manager representing the battery.
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*
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* This function add sysfs entry for charger(regulator) to control charger from
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* user-space. If some development board use one more chargers for charging
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* but only need one charger on specific case which is dependent on user
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* scenario or hardware restrictions, the user enter 1 or 0(zero) to '/sys/
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* class/power_supply/battery/charger.[index]/externally_control'. For example,
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* if user enter 1 to 'sys/class/power_supply/battery/charger.[index]/
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* externally_control, this charger isn't controlled from charger-manager and
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* always stay off state of regulator.
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*/
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static int charger_manager_register_sysfs(struct charger_manager *cm)
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{
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struct charger_desc *desc = cm->desc;
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struct charger_regulator *charger;
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int chargers_externally_control = 1;
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char buf[11];
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char *str;
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int ret = 0;
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int i;
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/* Create sysfs entry to control charger(regulator) */
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for (i = 0; i < desc->num_charger_regulators; i++) {
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charger = &desc->charger_regulators[i];
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snprintf(buf, 10, "charger.%d", i);
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str = kzalloc(sizeof(char) * (strlen(buf) + 1), GFP_KERNEL);
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if (!str) {
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dev_err(cm->dev, "Cannot allocate memory: %s\n",
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charger->regulator_name);
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ret = -ENOMEM;
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goto err;
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}
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strcpy(str, buf);
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charger->attrs[0] = &charger->attr_name.attr;
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charger->attrs[1] = &charger->attr_state.attr;
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charger->attrs[2] = &charger->attr_externally_control.attr;
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charger->attrs[3] = NULL;
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charger->attr_g.name = str;
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charger->attr_g.attrs = charger->attrs;
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sysfs_attr_init(&charger->attr_name.attr);
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charger->attr_name.attr.name = "name";
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charger->attr_name.attr.mode = 0444;
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charger->attr_name.show = charger_name_show;
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sysfs_attr_init(&charger->attr_state.attr);
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charger->attr_state.attr.name = "state";
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charger->attr_state.attr.mode = 0444;
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charger->attr_state.show = charger_state_show;
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sysfs_attr_init(&charger->attr_externally_control.attr);
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charger->attr_externally_control.attr.name
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= "externally_control";
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charger->attr_externally_control.attr.mode = 0644;
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charger->attr_externally_control.show
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= charger_externally_control_show;
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charger->attr_externally_control.store
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= charger_externally_control_store;
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if (!desc->charger_regulators[i].externally_control ||
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!chargers_externally_control)
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chargers_externally_control = 0;
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dev_info(cm->dev, "'%s' regulator's externally_control"
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"is %d\n", charger->regulator_name,
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charger->externally_control);
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ret = sysfs_create_group(&cm->charger_psy.dev->kobj,
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&charger->attr_g);
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if (ret < 0) {
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dev_err(cm->dev, "Cannot create sysfs entry"
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"of %s regulator\n",
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charger->regulator_name);
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ret = -EINVAL;
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goto err;
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}
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}
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if (chargers_externally_control) {
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dev_err(cm->dev, "Cannot register regulator because "
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"charger-manager must need at least "
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"one charger for charging battery\n");
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ret = -EINVAL;
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goto err;
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}
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err:
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return ret;
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}
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static int charger_manager_probe(struct platform_device *pdev)
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{
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struct charger_desc *desc = dev_get_platdata(&pdev->dev);
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struct charger_manager *cm;
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int ret = 0, i = 0;
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int j = 0;
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int chargers_externally_control = 1;
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union power_supply_propval val;
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if (g_desc && !rtc_dev && g_desc->rtc_name) {
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@ -1440,11 +1583,10 @@ static int charger_manager_probe(struct platform_device *pdev)
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memcpy(&cm->charger_psy, &psy_default, sizeof(psy_default));
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if (!desc->psy_name) {
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if (!desc->psy_name)
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strncpy(cm->psy_name_buf, psy_default.name, PSY_NAME_MAX);
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} else {
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else
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strncpy(cm->psy_name_buf, desc->psy_name, PSY_NAME_MAX);
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}
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cm->charger_psy.name = cm->psy_name_buf;
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/* Allocate for psy properties because they may vary */
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@ -1496,105 +1638,19 @@ static int charger_manager_probe(struct platform_device *pdev)
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goto err_register;
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}
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for (i = 0 ; i < desc->num_charger_regulators ; i++) {
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struct charger_regulator *charger
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= &desc->charger_regulators[i];
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char buf[11];
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char *str;
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charger->consumer = regulator_get(&pdev->dev,
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charger->regulator_name);
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if (charger->consumer == NULL) {
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dev_err(&pdev->dev, "Cannot find charger(%s)n",
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charger->regulator_name);
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ret = -EINVAL;
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goto err_chg_get;
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}
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charger->cm = cm;
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for (j = 0 ; j < charger->num_cables ; j++) {
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struct charger_cable *cable = &charger->cables[j];
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ret = charger_extcon_init(cm, cable);
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if (ret < 0) {
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dev_err(&pdev->dev, "Cannot find charger(%s)n",
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charger->regulator_name);
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goto err_extcon;
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}
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cable->charger = charger;
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cable->cm = cm;
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}
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/* Create sysfs entry to control charger(regulator) */
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snprintf(buf, 10, "charger.%d", i);
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str = kzalloc(sizeof(char) * (strlen(buf) + 1), GFP_KERNEL);
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if (!str) {
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for (i--; i >= 0; i--) {
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charger = &desc->charger_regulators[i];
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kfree(charger->attr_g.name);
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}
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ret = -ENOMEM;
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goto err_extcon;
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}
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strcpy(str, buf);
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charger->attrs[0] = &charger->attr_name.attr;
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charger->attrs[1] = &charger->attr_state.attr;
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charger->attrs[2] = &charger->attr_externally_control.attr;
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charger->attrs[3] = NULL;
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charger->attr_g.name = str;
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charger->attr_g.attrs = charger->attrs;
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sysfs_attr_init(&charger->attr_name.attr);
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charger->attr_name.attr.name = "name";
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charger->attr_name.attr.mode = 0444;
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charger->attr_name.show = charger_name_show;
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sysfs_attr_init(&charger->attr_state.attr);
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charger->attr_state.attr.name = "state";
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charger->attr_state.attr.mode = 0444;
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charger->attr_state.show = charger_state_show;
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sysfs_attr_init(&charger->attr_externally_control.attr);
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charger->attr_externally_control.attr.name
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= "externally_control";
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charger->attr_externally_control.attr.mode = 0644;
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charger->attr_externally_control.show
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= charger_externally_control_show;
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charger->attr_externally_control.store
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= charger_externally_control_store;
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if (!desc->charger_regulators[i].externally_control ||
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!chargers_externally_control) {
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chargers_externally_control = 0;
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}
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dev_info(&pdev->dev, "'%s' regulator's externally_control"
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"is %d\n", charger->regulator_name,
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charger->externally_control);
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ret = sysfs_create_group(&cm->charger_psy.dev->kobj,
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&charger->attr_g);
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if (ret < 0) {
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dev_info(&pdev->dev, "Cannot create sysfs entry"
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"of %s regulator\n",
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charger->regulator_name);
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}
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/* Register extcon device for charger cable */
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ret = charger_manager_register_extcon(cm);
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if (ret < 0) {
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dev_err(&pdev->dev, "Cannot initialize extcon device\n");
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goto err_reg_extcon;
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}
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if (chargers_externally_control) {
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dev_err(&pdev->dev, "Cannot register regulator because "
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"charger-manager must need at least "
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"one charger for charging battery\n");
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ret = -EINVAL;
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goto err_chg_enable;
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}
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ret = try_charger_enable(cm, true);
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if (ret) {
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dev_err(&pdev->dev, "Cannot enable charger regulators\n");
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goto err_chg_enable;
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/* Register sysfs entry for charger(regulator) */
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ret = charger_manager_register_sysfs(cm);
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if (ret < 0) {
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dev_err(&pdev->dev,
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"Cannot initialize sysfs entry of regulator\n");
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goto err_reg_sysfs;
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}
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/* Add to the list */
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@ -1613,27 +1669,28 @@ static int charger_manager_probe(struct platform_device *pdev)
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return 0;
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err_chg_enable:
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err_reg_sysfs:
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for (i = 0; i < desc->num_charger_regulators; i++) {
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struct charger_regulator *charger;
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charger = &desc->charger_regulators[i];
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sysfs_remove_group(&cm->charger_psy.dev->kobj,
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&charger->attr_g);
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kfree(charger->attr_g.name);
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}
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err_extcon:
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for (i = 0 ; i < desc->num_charger_regulators ; i++) {
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struct charger_regulator *charger
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= &desc->charger_regulators[i];
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for (j = 0 ; j < charger->num_cables ; j++) {
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err_reg_extcon:
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for (i = 0; i < desc->num_charger_regulators; i++) {
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struct charger_regulator *charger;
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charger = &desc->charger_regulators[i];
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for (j = 0; j < charger->num_cables; j++) {
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struct charger_cable *cable = &charger->cables[j];
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extcon_unregister_interest(&cable->extcon_dev);
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}
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}
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err_chg_get:
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for (i = 0 ; i < desc->num_charger_regulators ; i++)
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regulator_put(desc->charger_regulators[i].consumer);
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}
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power_supply_unregister(&cm->charger_psy);
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err_register:
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