Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 256 insertions, 0 deletions

diff --git a/drivers/acpi/dptf/dptf_power.c b/drivers/acpi/dptf/dptf_power.c
new file mode 100644
index 000000000..86561eda9
--- /dev/null
+++ b/drivers/acpi/dptf/dptf_power.c
@@ -0,0 +1,256 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * dptf_power:  DPTF platform power driver
+ * Copyright (c) 2016, Intel Corporation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/platform_device.h>
+
+/*
+ * Presentation of attributes which are defined for INT3407 and INT3532.
+ * They are:
+ * PMAX : Maximum platform power
+ * PSRC : Platform power source
+ * ARTG : Adapter rating
+ * CTYP : Charger type
+ * PROP : Rest of worst case platform Power
+ * PBSS : Power Battery Steady State
+ * RBHF : High Frequency Impedance
+ * VBNL : Instantaneous No-Load Voltage
+ * CMPP : Current Discharge Capability
+ */
+#define DPTF_POWER_SHOW(name, object) \
+static ssize_t name##_show(struct device *dev,\
+			   struct device_attribute *attr,\
+			   char *buf)\
+{\
+	struct acpi_device *acpi_dev = dev_get_drvdata(dev);\
+	unsigned long long val;\
+	acpi_status status;\
+\
+	status = acpi_evaluate_integer(acpi_dev->handle, #object,\
+				       NULL, &val);\
+	if (ACPI_SUCCESS(status))\
+		return sprintf(buf, "%d\n", (int)val);\
+	else \
+		return -EINVAL;\
+}
+
+DPTF_POWER_SHOW(max_platform_power_mw, PMAX)
+DPTF_POWER_SHOW(platform_power_source, PSRC)
+DPTF_POWER_SHOW(adapter_rating_mw, ARTG)
+DPTF_POWER_SHOW(battery_steady_power_mw, PBSS)
+DPTF_POWER_SHOW(charger_type, CTYP)
+DPTF_POWER_SHOW(rest_of_platform_power_mw, PROP)
+DPTF_POWER_SHOW(max_steady_state_power_mw, PBSS)
+DPTF_POWER_SHOW(high_freq_impedance_mohm, RBHF)
+DPTF_POWER_SHOW(no_load_voltage_mv, VBNL)
+DPTF_POWER_SHOW(current_discharge_capbility_ma, CMPP);
+
+static DEVICE_ATTR_RO(max_platform_power_mw);
+static DEVICE_ATTR_RO(platform_power_source);
+static DEVICE_ATTR_RO(adapter_rating_mw);
+static DEVICE_ATTR_RO(battery_steady_power_mw);
+static DEVICE_ATTR_RO(charger_type);
+static DEVICE_ATTR_RO(rest_of_platform_power_mw);
+static DEVICE_ATTR_RO(max_steady_state_power_mw);
+static DEVICE_ATTR_RO(high_freq_impedance_mohm);
+static DEVICE_ATTR_RO(no_load_voltage_mv);
+static DEVICE_ATTR_RO(current_discharge_capbility_ma);
+
+static ssize_t prochot_confirm_store(struct device *dev,
+				     struct device_attribute *attr,
+				     const char *buf, size_t count)
+{
+	struct acpi_device *acpi_dev = dev_get_drvdata(dev);
+	acpi_status status;
+	int seq_no;
+
+	if (kstrtouint(buf, 0, &seq_no) < 0)
+		return -EINVAL;
+
+	status = acpi_execute_simple_method(acpi_dev->handle, "PBOK", seq_no);
+	if (ACPI_SUCCESS(status))
+		return count;
+
+	return -EINVAL;
+}
+
+static DEVICE_ATTR_WO(prochot_confirm);
+
+static struct attribute *dptf_power_attrs[] = {
+	&dev_attr_max_platform_power_mw.attr,
+	&dev_attr_platform_power_source.attr,
+	&dev_attr_adapter_rating_mw.attr,
+	&dev_attr_battery_steady_power_mw.attr,
+	&dev_attr_charger_type.attr,
+	&dev_attr_rest_of_platform_power_mw.attr,
+	&dev_attr_prochot_confirm.attr,
+	NULL
+};
+
+static const struct attribute_group dptf_power_attribute_group = {
+	.attrs = dptf_power_attrs,
+	.name = "dptf_power"
+};
+
+static struct attribute *dptf_battery_attrs[] = {
+	&dev_attr_max_platform_power_mw.attr,
+	&dev_attr_max_steady_state_power_mw.attr,
+	&dev_attr_high_freq_impedance_mohm.attr,
+	&dev_attr_no_load_voltage_mv.attr,
+	&dev_attr_current_discharge_capbility_ma.attr,
+	NULL
+};
+
+static const struct attribute_group dptf_battery_attribute_group = {
+	.attrs = dptf_battery_attrs,
+	.name = "dptf_battery"
+};
+
+#define MAX_POWER_CHANGED		0x80
+#define POWER_STATE_CHANGED		0x81
+#define STEADY_STATE_POWER_CHANGED	0x83
+#define POWER_PROP_CHANGE_EVENT	0x84
+#define IMPEDANCE_CHANGED		0x85
+#define VOLTAGE_CURRENT_CHANGED	0x86
+
+static long long dptf_participant_type(acpi_handle handle)
+{
+	unsigned long long ptype;
+	acpi_status status;
+
+	status = acpi_evaluate_integer(handle, "PTYP", NULL, &ptype);
+	if (ACPI_FAILURE(status))
+		return -ENODEV;
+
+	return ptype;
+}
+
+static void dptf_power_notify(acpi_handle handle, u32 event, void *data)
+{
+	struct platform_device *pdev = data;
+	char *attr;
+
+	switch (event) {
+	case POWER_STATE_CHANGED:
+		attr = "platform_power_source";
+		break;
+	case POWER_PROP_CHANGE_EVENT:
+		attr = "rest_of_platform_power_mw";
+		break;
+	case MAX_POWER_CHANGED:
+		attr = "max_platform_power_mw";
+		break;
+	case STEADY_STATE_POWER_CHANGED:
+		attr = "max_steady_state_power_mw";
+		break;
+	case IMPEDANCE_CHANGED:
+		attr = "high_freq_impedance_mohm";
+		break;
+	case VOLTAGE_CURRENT_CHANGED:
+		attr = "no_load_voltage_mv";
+		break;
+	default:
+		dev_err(&pdev->dev, "Unsupported event [0x%x]\n", event);
+		return;
+	}
+
+	/*
+	 * Notify that an attribute is changed, so that user space can read
+	 * again.
+	 */
+	if (dptf_participant_type(handle) == 0x0CULL)
+		sysfs_notify(&pdev->dev.kobj, "dptf_battery", attr);
+	else
+		sysfs_notify(&pdev->dev.kobj, "dptf_power", attr);
+}
+
+static int dptf_power_add(struct platform_device *pdev)
+{
+	const struct attribute_group *attr_group;
+	struct acpi_device *acpi_dev;
+	unsigned long long ptype;
+	int result;
+
+	acpi_dev = ACPI_COMPANION(&(pdev->dev));
+	if (!acpi_dev)
+		return -ENODEV;
+
+	ptype = dptf_participant_type(acpi_dev->handle);
+	if (ptype == 0x11)
+		attr_group = &dptf_power_attribute_group;
+	else if (ptype == 0x0C)
+		attr_group = &dptf_battery_attribute_group;
+	else
+		return -ENODEV;
+
+	result = acpi_install_notify_handler(acpi_dev->handle,
+					     ACPI_DEVICE_NOTIFY,
+					     dptf_power_notify,
+					     (void *)pdev);
+	if (result)
+		return result;
+
+	result = sysfs_create_group(&pdev->dev.kobj,
+				    attr_group);
+	if (result) {
+		acpi_remove_notify_handler(acpi_dev->handle,
+					   ACPI_DEVICE_NOTIFY,
+					   dptf_power_notify);
+		return result;
+	}
+
+	platform_set_drvdata(pdev, acpi_dev);
+
+	return 0;
+}
+
+static int dptf_power_remove(struct platform_device *pdev)
+{
+	struct acpi_device *acpi_dev = platform_get_drvdata(pdev);
+
+	acpi_remove_notify_handler(acpi_dev->handle,
+				   ACPI_DEVICE_NOTIFY,
+				   dptf_power_notify);
+
+	if (dptf_participant_type(acpi_dev->handle) == 0x0CULL)
+		sysfs_remove_group(&pdev->dev.kobj, &dptf_battery_attribute_group);
+	else
+		sysfs_remove_group(&pdev->dev.kobj, &dptf_power_attribute_group);
+
+	return 0;
+}
+
+static const struct acpi_device_id int3407_device_ids[] = {
+	{"INT3407", 0},
+	{"INT3532", 0},
+	{"INTC1047", 0},
+	{"INTC1050", 0},
+	{"INTC1060", 0},
+	{"INTC1061", 0},
+	{"INTC1065", 0},
+	{"INTC1066", 0},
+	{"INTC10A4", 0},
+	{"INTC10A5", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, int3407_device_ids);
+
+static struct platform_driver dptf_power_driver = {
+	.probe = dptf_power_add,
+	.remove = dptf_power_remove,
+	.driver = {
+		.name = "dptf_power",
+		.acpi_match_table = int3407_device_ids,
+	},
+};
+
+module_platform_driver(dptf_power_driver);
+
+MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("ACPI DPTF platform power driver");