classmate-laptop: Add support for Classmate V4 accelerometer.
Classmate V4 laptop includes a new accelerometer that can't be handled by previous driver. This patch adds a new driver to handle it. [mjg: Fixed up the driver pm stuff] Signed-off-by: Miguel Gómez <magomez@igalia.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>hifive-unleashed-5.1
Miguel Gómez
Matthew Garrett
parent
c0b91b6d52
commit
7125587df4
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@ -31,12 +31,18 @@ MODULE_LICENSE("GPL");
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struct cmpc_accel {
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int sensitivity;
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int g_select;
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int inputdev_state;
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};
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#define CMPC_ACCEL_SENSITIVITY_DEFAULT 5
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#define CMPC_ACCEL_DEV_STATE_CLOSED 0
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#define CMPC_ACCEL_DEV_STATE_OPEN 1
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#define CMPC_ACCEL_SENSITIVITY_DEFAULT 5
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#define CMPC_ACCEL_G_SELECT_DEFAULT 0
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#define CMPC_ACCEL_HID "ACCE0000"
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#define CMPC_ACCEL_HID_V4 "ACCE0001"
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#define CMPC_TABLET_HID "TBLT0000"
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#define CMPC_IPML_HID "IPML200"
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#define CMPC_KEYS_HID "FnBT0000"
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@ -76,7 +82,391 @@ static int cmpc_remove_acpi_notify_device(struct acpi_device *acpi)
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}
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/*
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* Accelerometer code.
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* Accelerometer code for Classmate V4
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*/
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static acpi_status cmpc_start_accel_v4(acpi_handle handle)
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{
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union acpi_object param[4];
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struct acpi_object_list input;
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acpi_status status;
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param[0].type = ACPI_TYPE_INTEGER;
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param[0].integer.value = 0x3;
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param[1].type = ACPI_TYPE_INTEGER;
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param[1].integer.value = 0;
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param[2].type = ACPI_TYPE_INTEGER;
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param[2].integer.value = 0;
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param[3].type = ACPI_TYPE_INTEGER;
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param[3].integer.value = 0;
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input.count = 4;
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input.pointer = param;
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status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
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return status;
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}
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static acpi_status cmpc_stop_accel_v4(acpi_handle handle)
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{
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union acpi_object param[4];
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struct acpi_object_list input;
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acpi_status status;
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param[0].type = ACPI_TYPE_INTEGER;
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param[0].integer.value = 0x4;
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param[1].type = ACPI_TYPE_INTEGER;
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param[1].integer.value = 0;
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param[2].type = ACPI_TYPE_INTEGER;
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param[2].integer.value = 0;
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param[3].type = ACPI_TYPE_INTEGER;
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param[3].integer.value = 0;
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input.count = 4;
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input.pointer = param;
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status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
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return status;
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}
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static acpi_status cmpc_accel_set_sensitivity_v4(acpi_handle handle, int val)
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{
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union acpi_object param[4];
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struct acpi_object_list input;
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param[0].type = ACPI_TYPE_INTEGER;
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param[0].integer.value = 0x02;
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param[1].type = ACPI_TYPE_INTEGER;
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param[1].integer.value = val;
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param[2].type = ACPI_TYPE_INTEGER;
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param[2].integer.value = 0;
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param[3].type = ACPI_TYPE_INTEGER;
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param[3].integer.value = 0;
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input.count = 4;
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input.pointer = param;
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return acpi_evaluate_object(handle, "ACMD", &input, NULL);
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}
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static acpi_status cmpc_accel_set_g_select_v4(acpi_handle handle, int val)
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{
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union acpi_object param[4];
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struct acpi_object_list input;
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param[0].type = ACPI_TYPE_INTEGER;
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param[0].integer.value = 0x05;
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param[1].type = ACPI_TYPE_INTEGER;
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param[1].integer.value = val;
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param[2].type = ACPI_TYPE_INTEGER;
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param[2].integer.value = 0;
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param[3].type = ACPI_TYPE_INTEGER;
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param[3].integer.value = 0;
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input.count = 4;
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input.pointer = param;
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return acpi_evaluate_object(handle, "ACMD", &input, NULL);
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}
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static acpi_status cmpc_get_accel_v4(acpi_handle handle,
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int16_t *x,
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int16_t *y,
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int16_t *z)
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{
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union acpi_object param[4];
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struct acpi_object_list input;
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struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
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int16_t *locs;
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acpi_status status;
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param[0].type = ACPI_TYPE_INTEGER;
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param[0].integer.value = 0x01;
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param[1].type = ACPI_TYPE_INTEGER;
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param[1].integer.value = 0;
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param[2].type = ACPI_TYPE_INTEGER;
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param[2].integer.value = 0;
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param[3].type = ACPI_TYPE_INTEGER;
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param[3].integer.value = 0;
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input.count = 4;
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input.pointer = param;
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status = acpi_evaluate_object(handle, "ACMD", &input, &output);
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if (ACPI_SUCCESS(status)) {
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union acpi_object *obj;
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obj = output.pointer;
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locs = (int16_t *) obj->buffer.pointer;
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*x = locs[0];
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*y = locs[1];
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*z = locs[2];
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kfree(output.pointer);
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}
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return status;
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}
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static void cmpc_accel_handler_v4(struct acpi_device *dev, u32 event)
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{
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if (event == 0x81) {
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int16_t x, y, z;
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acpi_status status;
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status = cmpc_get_accel_v4(dev->handle, &x, &y, &z);
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if (ACPI_SUCCESS(status)) {
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struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
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input_report_abs(inputdev, ABS_X, x);
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input_report_abs(inputdev, ABS_Y, y);
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input_report_abs(inputdev, ABS_Z, z);
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input_sync(inputdev);
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}
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}
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}
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static ssize_t cmpc_accel_sensitivity_show_v4(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct acpi_device *acpi;
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struct input_dev *inputdev;
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struct cmpc_accel *accel;
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acpi = to_acpi_device(dev);
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inputdev = dev_get_drvdata(&acpi->dev);
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accel = dev_get_drvdata(&inputdev->dev);
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return sprintf(buf, "%d\n", accel->sensitivity);
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}
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static ssize_t cmpc_accel_sensitivity_store_v4(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct acpi_device *acpi;
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struct input_dev *inputdev;
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struct cmpc_accel *accel;
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unsigned long sensitivity;
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int r;
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acpi = to_acpi_device(dev);
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inputdev = dev_get_drvdata(&acpi->dev);
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accel = dev_get_drvdata(&inputdev->dev);
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r = kstrtoul(buf, 0, &sensitivity);
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if (r)
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return r;
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/* sensitivity must be between 1 and 127 */
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if (sensitivity < 1 || sensitivity > 127)
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return -EINVAL;
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accel->sensitivity = sensitivity;
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cmpc_accel_set_sensitivity_v4(acpi->handle, sensitivity);
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return strnlen(buf, count);
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}
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static struct device_attribute cmpc_accel_sensitivity_attr_v4 = {
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.attr = { .name = "sensitivity", .mode = 0660 },
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.show = cmpc_accel_sensitivity_show_v4,
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.store = cmpc_accel_sensitivity_store_v4
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};
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static ssize_t cmpc_accel_g_select_show_v4(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct acpi_device *acpi;
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struct input_dev *inputdev;
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struct cmpc_accel *accel;
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acpi = to_acpi_device(dev);
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inputdev = dev_get_drvdata(&acpi->dev);
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accel = dev_get_drvdata(&inputdev->dev);
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return sprintf(buf, "%d\n", accel->g_select);
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}
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static ssize_t cmpc_accel_g_select_store_v4(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct acpi_device *acpi;
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struct input_dev *inputdev;
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struct cmpc_accel *accel;
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unsigned long g_select;
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int r;
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acpi = to_acpi_device(dev);
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inputdev = dev_get_drvdata(&acpi->dev);
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accel = dev_get_drvdata(&inputdev->dev);
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r = kstrtoul(buf, 0, &g_select);
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if (r)
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return r;
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/* 0 means 1.5g, 1 means 6g, everything else is wrong */
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if (g_select != 0 && g_select != 1)
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return -EINVAL;
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accel->g_select = g_select;
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cmpc_accel_set_g_select_v4(acpi->handle, g_select);
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return strnlen(buf, count);
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}
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static struct device_attribute cmpc_accel_g_select_attr_v4 = {
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.attr = { .name = "g_select", .mode = 0660 },
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.show = cmpc_accel_g_select_show_v4,
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.store = cmpc_accel_g_select_store_v4
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};
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static int cmpc_accel_open_v4(struct input_dev *input)
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{
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struct acpi_device *acpi;
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struct cmpc_accel *accel;
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acpi = to_acpi_device(input->dev.parent);
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accel = dev_get_drvdata(&input->dev);
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cmpc_accel_set_sensitivity_v4(acpi->handle, accel->sensitivity);
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cmpc_accel_set_g_select_v4(acpi->handle, accel->g_select);
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if (ACPI_SUCCESS(cmpc_start_accel_v4(acpi->handle))) {
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accel->inputdev_state = CMPC_ACCEL_DEV_STATE_OPEN;
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return 0;
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}
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return -EIO;
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}
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static void cmpc_accel_close_v4(struct input_dev *input)
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{
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struct acpi_device *acpi;
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struct cmpc_accel *accel;
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acpi = to_acpi_device(input->dev.parent);
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accel = dev_get_drvdata(&input->dev);
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cmpc_stop_accel_v4(acpi->handle);
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accel->inputdev_state = CMPC_ACCEL_DEV_STATE_CLOSED;
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}
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static void cmpc_accel_idev_init_v4(struct input_dev *inputdev)
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{
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set_bit(EV_ABS, inputdev->evbit);
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input_set_abs_params(inputdev, ABS_X, -255, 255, 16, 0);
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input_set_abs_params(inputdev, ABS_Y, -255, 255, 16, 0);
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input_set_abs_params(inputdev, ABS_Z, -255, 255, 16, 0);
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inputdev->open = cmpc_accel_open_v4;
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inputdev->close = cmpc_accel_close_v4;
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}
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static int cmpc_accel_suspend_v4(struct device *dev)
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{
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struct input_dev *inputdev;
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struct cmpc_accel *accel;
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inputdev = dev_get_drvdata(dev);
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accel = dev_get_drvdata(&inputdev->dev);
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if (accel->inputdev_state == CMPC_ACCEL_DEV_STATE_OPEN)
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return cmpc_stop_accel_v4(to_acpi_device(dev)->handle);
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return 0;
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}
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static int cmpc_accel_resume_v4(struct device *dev)
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{
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struct input_dev *inputdev;
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struct cmpc_accel *accel;
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inputdev = dev_get_drvdata(dev);
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accel = dev_get_drvdata(&inputdev->dev);
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if (accel->inputdev_state == CMPC_ACCEL_DEV_STATE_OPEN) {
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cmpc_accel_set_sensitivity_v4(to_acpi_device(dev)->handle,
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accel->sensitivity);
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cmpc_accel_set_g_select_v4(to_acpi_device(dev)->handle,
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accel->g_select);
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if (ACPI_FAILURE(cmpc_start_accel_v4(to_acpi_device(dev)->handle)))
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return -EIO;
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}
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return 0;
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}
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static int cmpc_accel_add_v4(struct acpi_device *acpi)
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{
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int error;
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struct input_dev *inputdev;
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struct cmpc_accel *accel;
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accel = kmalloc(sizeof(*accel), GFP_KERNEL);
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if (!accel)
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return -ENOMEM;
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accel->inputdev_state = CMPC_ACCEL_DEV_STATE_CLOSED;
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accel->sensitivity = CMPC_ACCEL_SENSITIVITY_DEFAULT;
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cmpc_accel_set_sensitivity_v4(acpi->handle, accel->sensitivity);
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error = device_create_file(&acpi->dev, &cmpc_accel_sensitivity_attr_v4);
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if (error)
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goto failed_sensitivity;
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accel->g_select = CMPC_ACCEL_G_SELECT_DEFAULT;
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cmpc_accel_set_g_select_v4(acpi->handle, accel->g_select);
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error = device_create_file(&acpi->dev, &cmpc_accel_g_select_attr_v4);
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if (error)
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goto failed_g_select;
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error = cmpc_add_acpi_notify_device(acpi, "cmpc_accel_v4",
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cmpc_accel_idev_init_v4);
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if (error)
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goto failed_input;
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inputdev = dev_get_drvdata(&acpi->dev);
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dev_set_drvdata(&inputdev->dev, accel);
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return 0;
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failed_input:
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device_remove_file(&acpi->dev, &cmpc_accel_g_select_attr_v4);
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failed_g_select:
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device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr_v4);
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failed_sensitivity:
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kfree(accel);
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return error;
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}
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static int cmpc_accel_remove_v4(struct acpi_device *acpi, int type)
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{
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struct input_dev *inputdev;
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struct cmpc_accel *accel;
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inputdev = dev_get_drvdata(&acpi->dev);
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accel = dev_get_drvdata(&inputdev->dev);
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device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr_v4);
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device_remove_file(&acpi->dev, &cmpc_accel_g_select_attr_v4);
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return cmpc_remove_acpi_notify_device(acpi);
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}
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static SIMPLE_DEV_PM_OPS(cmpc_accel_pm, cmpc_accel_suspend_v4,
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cmpc_accel_resume_v4);
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static const struct acpi_device_id cmpc_accel_device_ids_v4[] = {
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{CMPC_ACCEL_HID_V4, 0},
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{"", 0}
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};
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static struct acpi_driver cmpc_accel_acpi_driver_v4 = {
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.owner = THIS_MODULE,
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.name = "cmpc_accel_v4",
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.class = "cmpc_accel_v4",
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.ids = cmpc_accel_device_ids_v4,
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.ops = {
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.add = cmpc_accel_add_v4,
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.remove = cmpc_accel_remove_v4,
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.notify = cmpc_accel_handler_v4,
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},
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.drv.pm = &cmpc_accel_pm,
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};
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/*
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* Accelerometer code for Classmate versions prior to V4
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*/
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static acpi_status cmpc_start_accel(acpi_handle handle)
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{
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@ -726,8 +1116,15 @@ static int cmpc_init(void)
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if (r)
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goto failed_accel;
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r = acpi_bus_register_driver(&cmpc_accel_acpi_driver_v4);
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if (r)
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goto failed_accel_v4;
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return r;
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failed_accel_v4:
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acpi_bus_unregister_driver(&cmpc_accel_acpi_driver);
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failed_accel:
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acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
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@ -743,6 +1140,7 @@ failed_keys:
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static void cmpc_exit(void)
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{
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acpi_bus_unregister_driver(&cmpc_accel_acpi_driver_v4);
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acpi_bus_unregister_driver(&cmpc_accel_acpi_driver);
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acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
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acpi_bus_unregister_driver(&cmpc_ipml_acpi_driver);
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@ -754,6 +1152,7 @@ module_exit(cmpc_exit);
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static const struct acpi_device_id cmpc_device_ids[] = {
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{CMPC_ACCEL_HID, 0},
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{CMPC_ACCEL_HID_V4, 0},
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{CMPC_TABLET_HID, 0},
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{CMPC_IPML_HID, 0},
|
||||
{CMPC_KEYS_HID, 0},
|
||||
|
|
|
|||
Loading…
Reference in New Issue