static int arche_apb_ctrl_probe(struct platform_device *pdev)
{
int ret;
struct arche_apb_ctrl_drvdata *apb;
struct device *dev = &pdev->dev;
apb = devm_kzalloc(&pdev->dev, sizeof(*apb), GFP_KERNEL);
if (!apb)
return -ENOMEM;
ret = apb_ctrl_get_devtree_data(pdev, apb);
if (ret) {
dev_err(dev, "failed to get apb devicetree data %d\n", ret);
return ret;
}
/* Initially set APB to OFF state */
apb->state = ARCHE_PLATFORM_STATE_OFF;
/* Check whether device needs to be enabled on boot */
if (of_property_read_bool(pdev->dev.of_node, "arche,init-disable"))
apb->init_disabled = true;
platform_set_drvdata(pdev, apb);
/* Create sysfs interface to allow user to change state dynamically */
ret = device_create_file(dev, &dev_attr_state);
if (ret) {
dev_err(dev, "failed to create state file in sysfs\n");
return ret;
}
dev_info(&pdev->dev, "Device registered successfully\n");
return 0;
}
int arche_apb_ctrl_probe(struct platform_device *pdev)
{
int ret;
struct arche_apb_ctrl_drvdata *apb;
struct device *dev = &pdev->dev;
apb = devm_kzalloc(&pdev->dev, sizeof(*apb), GFP_KERNEL);
if (!apb)
return -ENOMEM;
ret = apb_ctrl_get_devtree_data(pdev, apb);
if (ret) {
dev_err(dev, "failed to get apb devicetree data %d\n", ret);
return ret;
}
ret = apb_ctrl_init_seq(pdev, apb);
if (ret) {
dev_err(dev, "failed to set init state of control signal %d\n",
ret);
return ret;
}
/* deassert reset to APB : Active-low signal */
deassert_reset(apb->resetn_gpio);
apb->state = APB_STATE_ACTIVE;
platform_set_drvdata(pdev, apb);
export_gpios(apb);
dev_info(&pdev->dev, "Device registered successfully\n");
return 0;
}