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-rw-r--r--drivers/hid/hid-lg.c55
-rw-r--r--drivers/hid/hid-lg.h5
-rw-r--r--drivers/hid/hid-lg4ff.c258
-rw-r--r--drivers/hid/hid-multitouch.c58
4 files changed, 287 insertions, 89 deletions
diff --git a/drivers/hid/hid-lg.c b/drivers/hid/hid-lg.c
index e7a7bd1eb34a..fc37ed6b108c 100644
--- a/drivers/hid/hid-lg.c
+++ b/drivers/hid/hid-lg.c
@@ -109,23 +109,23 @@ static __u8 dfp_rdesc_fixed[] = {
static __u8 *lg_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
- unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
+ struct lg_drv_data *drv_data = (struct lg_drv_data *)hid_get_drvdata(hdev);
- if ((quirks & LG_RDESC) && *rsize >= 90 && rdesc[83] == 0x26 &&
+ if ((drv_data->quirks & LG_RDESC) && *rsize >= 90 && rdesc[83] == 0x26 &&
rdesc[84] == 0x8c && rdesc[85] == 0x02) {
hid_info(hdev,
"fixing up Logitech keyboard report descriptor\n");
rdesc[84] = rdesc[89] = 0x4d;
rdesc[85] = rdesc[90] = 0x10;
}
- if ((quirks & LG_RDESC_REL_ABS) && *rsize >= 50 &&
+ if ((drv_data->quirks & LG_RDESC_REL_ABS) && *rsize >= 50 &&
rdesc[32] == 0x81 && rdesc[33] == 0x06 &&
rdesc[49] == 0x81 && rdesc[50] == 0x06) {
hid_info(hdev,
"fixing up rel/abs in Logitech report descriptor\n");
rdesc[33] = rdesc[50] = 0x02;
}
- if ((quirks & LG_FF4) && *rsize >= 101 &&
+ if ((drv_data->quirks & LG_FF4) && *rsize >= 101 &&
rdesc[41] == 0x95 && rdesc[42] == 0x0B &&
rdesc[47] == 0x05 && rdesc[48] == 0x09) {
hid_info(hdev, "fixing up Logitech Speed Force Wireless button descriptor\n");
@@ -278,7 +278,7 @@ static int lg_input_mapping(struct hid_device *hdev, struct hid_input *hi,
0, 0, 0, 0, 0,183,184,185,186,187,
188,189,190,191,192,193,194, 0, 0, 0
};
- unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
+ struct lg_drv_data *drv_data = (struct lg_drv_data *)hid_get_drvdata(hdev);
unsigned int hid = usage->hid;
if (hdev->product == USB_DEVICE_ID_LOGITECH_RECEIVER &&
@@ -289,7 +289,7 @@ static int lg_input_mapping(struct hid_device *hdev, struct hid_input *hi,
lg_dinovo_mapping(hi, usage, bit, max))
return 1;
- if ((quirks & LG_WIRELESS) && lg_wireless_mapping(hi, usage, bit, max))
+ if ((drv_data->quirks & LG_WIRELESS) && lg_wireless_mapping(hi, usage, bit, max))
return 1;
if ((hid & HID_USAGE_PAGE) != HID_UP_BUTTON)
@@ -299,11 +299,11 @@ static int lg_input_mapping(struct hid_device *hdev, struct hid_input *hi,
/* Special handling for Logitech Cordless Desktop */
if (field->application == HID_GD_MOUSE) {
- if ((quirks & LG_IGNORE_DOUBLED_WHEEL) &&
+ if ((drv_data->quirks & LG_IGNORE_DOUBLED_WHEEL) &&
(hid == 7 || hid == 8))
return -1;
} else {
- if ((quirks & LG_EXPANDED_KEYMAP) &&
+ if ((drv_data->quirks & LG_EXPANDED_KEYMAP) &&
hid < ARRAY_SIZE(e_keymap) &&
e_keymap[hid] != 0) {
hid_map_usage(hi, usage, bit, max, EV_KEY,
@@ -319,13 +319,13 @@ static int lg_input_mapped(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
- unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
+ struct lg_drv_data *drv_data = (struct lg_drv_data *)hid_get_drvdata(hdev);
- if ((quirks & LG_BAD_RELATIVE_KEYS) && usage->type == EV_KEY &&
+ if ((drv_data->quirks & LG_BAD_RELATIVE_KEYS) && usage->type == EV_KEY &&
(field->flags & HID_MAIN_ITEM_RELATIVE))
field->flags &= ~HID_MAIN_ITEM_RELATIVE;
- if ((quirks & LG_DUPLICATE_USAGES) && (usage->type == EV_KEY ||
+ if ((drv_data->quirks & LG_DUPLICATE_USAGES) && (usage->type == EV_KEY ||
usage->type == EV_REL || usage->type == EV_ABS))
clear_bit(usage->code, *bit);
@@ -335,9 +335,9 @@ static int lg_input_mapped(struct hid_device *hdev, struct hid_input *hi,
static int lg_event(struct hid_device *hdev, struct hid_field *field,
struct hid_usage *usage, __s32 value)
{
- unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
+ struct lg_drv_data *drv_data = (struct lg_drv_data *)hid_get_drvdata(hdev);
- if ((quirks & LG_INVERT_HWHEEL) && usage->code == REL_HWHEEL) {
+ if ((drv_data->quirks & LG_INVERT_HWHEEL) && usage->code == REL_HWHEEL) {
input_event(field->hidinput->input, usage->type, usage->code,
-value);
return 1;
@@ -348,13 +348,20 @@ static int lg_event(struct hid_device *hdev, struct hid_field *field,
static int lg_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
- unsigned long quirks = id->driver_data;
unsigned int connect_mask = HID_CONNECT_DEFAULT;
+ struct lg_drv_data *drv_data;
int ret;
- hid_set_drvdata(hdev, (void *)quirks);
+ drv_data = kzalloc(sizeof(struct lg_drv_data), GFP_KERNEL);
+ if (!drv_data) {
+ hid_err(hdev, "Insufficient memory, cannot allocate driver data\n");
+ return -ENOMEM;
+ }
+ drv_data->quirks = id->driver_data;
+
+ hid_set_drvdata(hdev, (void *)drv_data);
- if (quirks & LG_NOGET)
+ if (drv_data->quirks & LG_NOGET)
hdev->quirks |= HID_QUIRK_NOGET;
ret = hid_parse(hdev);
@@ -363,7 +370,7 @@ static int lg_probe(struct hid_device *hdev, const struct hid_device_id *id)
goto err_free;
}
- if (quirks & (LG_FF | LG_FF2 | LG_FF3 | LG_FF4))
+ if (drv_data->quirks & (LG_FF | LG_FF2 | LG_FF3 | LG_FF4))
connect_mask &= ~HID_CONNECT_FF;
ret = hid_hw_start(hdev, connect_mask);
@@ -392,27 +399,29 @@ static int lg_probe(struct hid_device *hdev, const struct hid_device_id *id)
}
}
- if (quirks & LG_FF)
+ if (drv_data->quirks & LG_FF)
lgff_init(hdev);
- if (quirks & LG_FF2)
+ if (drv_data->quirks & LG_FF2)
lg2ff_init(hdev);
- if (quirks & LG_FF3)
+ if (drv_data->quirks & LG_FF3)
lg3ff_init(hdev);
- if (quirks & LG_FF4)
+ if (drv_data->quirks & LG_FF4)
lg4ff_init(hdev);
return 0;
err_free:
+ kfree(drv_data);
return ret;
}
static void lg_remove(struct hid_device *hdev)
{
- unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
- if(quirks & LG_FF4)
+ struct lg_drv_data *drv_data = (struct lg_drv_data *)hid_get_drvdata(hdev);
+ if (drv_data->quirks & LG_FF4)
lg4ff_deinit(hdev);
hid_hw_stop(hdev);
+ kfree(drv_data);
}
static const struct hid_device_id lg_devices[] = {
diff --git a/drivers/hid/hid-lg.h b/drivers/hid/hid-lg.h
index 4b097286dc78..d64cf8d2751e 100644
--- a/drivers/hid/hid-lg.h
+++ b/drivers/hid/hid-lg.h
@@ -1,6 +1,11 @@
#ifndef __HID_LG_H
#define __HID_LG_H
+struct lg_drv_data {
+ unsigned long quirks;
+ void *device_props; /* Device specific properties */
+};
+
#ifdef CONFIG_LOGITECH_FF
int lgff_init(struct hid_device *hdev);
#else
diff --git a/drivers/hid/hid-lg4ff.c b/drivers/hid/hid-lg4ff.c
index 6ecc9e220440..f3390ee6105c 100644
--- a/drivers/hid/hid-lg4ff.c
+++ b/drivers/hid/hid-lg4ff.c
@@ -1,7 +1,8 @@
/*
- * Force feedback support for Logitech Speed Force Wireless
+ * Force feedback support for Logitech Gaming Wheels
*
- * http://wiibrew.org/wiki/Logitech_USB_steering_wheel
+ * Including G27, G25, DFP, DFGT, FFEX, Momo, Momo2 &
+ * Speed Force Wireless (WiiWheel)
*
* Copyright (c) 2010 Simon Wood <simon@mungewell.org>
*/
@@ -51,20 +52,18 @@ static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *at
static DEVICE_ATTR(range, S_IRWXU | S_IRWXG | S_IRWXO, lg4ff_range_show, lg4ff_range_store);
-static bool list_inited;
-
struct lg4ff_device_entry {
- char *device_id; /* Use name in respective kobject structure's address as the ID */
__u16 range;
__u16 min_range;
__u16 max_range;
- __u8 leds;
+#ifdef CONFIG_LEDS_CLASS
+ __u8 led_state;
+ struct led_classdev *led[5];
+#endif
struct list_head list;
void (*set_range)(struct hid_device *hid, u16 range);
};
-static struct lg4ff_device_entry device_list;
-
static const signed short lg4ff_wheel_effects[] = {
FF_CONSTANT,
FF_AUTOCENTER,
@@ -285,18 +284,20 @@ static void hid_lg4ff_switch_native(struct hid_device *hid, const struct lg4ff_n
/* Read current range and display it in terminal */
static ssize_t lg4ff_range_show(struct device *dev, struct device_attribute *attr, char *buf)
{
- struct lg4ff_device_entry *uninitialized_var(entry);
- struct list_head *h;
struct hid_device *hid = to_hid_device(dev);
+ struct lg4ff_device_entry *entry;
+ struct lg_drv_data *drv_data;
size_t count;
- list_for_each(h, &device_list.list) {
- entry = list_entry(h, struct lg4ff_device_entry, list);
- if (strcmp(entry->device_id, (&hid->dev)->kobj.name) == 0)
- break;
+ drv_data = hid_get_drvdata(hid);
+ if (!drv_data) {
+ hid_err(hid, "Private driver data not found!\n");
+ return 0;
}
- if (h == &device_list.list) {
- dbg_hid("Device not found!");
+
+ entry = drv_data->device_props;
+ if (!entry) {
+ hid_err(hid, "Device properties not found!\n");
return 0;
}
@@ -308,19 +309,21 @@ static ssize_t lg4ff_range_show(struct device *dev, struct device_attribute *att
* according to the type of the wheel */
static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
- struct lg4ff_device_entry *uninitialized_var(entry);
- struct list_head *h;
struct hid_device *hid = to_hid_device(dev);
+ struct lg4ff_device_entry *entry;
+ struct lg_drv_data *drv_data;
__u16 range = simple_strtoul(buf, NULL, 10);
- list_for_each(h, &device_list.list) {
- entry = list_entry(h, struct lg4ff_device_entry, list);
- if (strcmp(entry->device_id, (&hid->dev)->kobj.name) == 0)
- break;
+ drv_data = hid_get_drvdata(hid);
+ if (!drv_data) {
+ hid_err(hid, "Private driver data not found!\n");
+ return 0;
}
- if (h == &device_list.list) {
- dbg_hid("Device not found!");
- return count;
+
+ entry = drv_data->device_props;
+ if (!entry) {
+ hid_err(hid, "Device properties not found!\n");
+ return 0;
}
if (range == 0)
@@ -336,6 +339,88 @@ static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *at
return count;
}
+#ifdef CONFIG_LEDS_CLASS
+static void lg4ff_set_leds(struct hid_device *hid, __u8 leds)
+{
+ struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
+ struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
+
+ report->field[0]->value[0] = 0xf8;
+ report->field[0]->value[1] = 0x12;
+ report->field[0]->value[2] = leds;
+ report->field[0]->value[3] = 0x00;
+ report->field[0]->value[4] = 0x00;
+ report->field[0]->value[5] = 0x00;
+ report->field[0]->value[6] = 0x00;
+ usbhid_submit_report(hid, report, USB_DIR_OUT);
+}
+
+static void lg4ff_led_set_brightness(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct device *dev = led_cdev->dev->parent;
+ struct hid_device *hid = container_of(dev, struct hid_device, dev);
+ struct lg_drv_data *drv_data = (struct lg_drv_data *)hid_get_drvdata(hid);
+ struct lg4ff_device_entry *entry;
+ int i, state = 0;
+
+ if (!drv_data) {
+ hid_err(hid, "Device data not found.");
+ return;
+ }
+
+ entry = (struct lg4ff_device_entry *)drv_data->device_props;
+
+ if (!entry) {
+ hid_err(hid, "Device properties not found.");
+ return;
+ }
+
+ for (i = 0; i < 5; i++) {
+ if (led_cdev != entry->led[i])
+ continue;
+ state = (entry->led_state >> i) & 1;
+ if (value == LED_OFF && state) {
+ entry->led_state &= ~(1 << i);
+ lg4ff_set_leds(hid, entry->led_state);
+ } else if (value != LED_OFF && !state) {
+ entry->led_state |= 1 << i;
+ lg4ff_set_leds(hid, entry->led_state);
+ }
+ break;
+ }
+}
+
+static enum led_brightness lg4ff_led_get_brightness(struct led_classdev *led_cdev)
+{
+ struct device *dev = led_cdev->dev->parent;
+ struct hid_device *hid = container_of(dev, struct hid_device, dev);
+ struct lg_drv_data *drv_data = (struct lg_drv_data *)hid_get_drvdata(hid);
+ struct lg4ff_device_entry *entry;
+ int i, value = 0;
+
+ if (!drv_data) {
+ hid_err(hid, "Device data not found.");
+ return LED_OFF;
+ }
+
+ entry = (struct lg4ff_device_entry *)drv_data->device_props;
+
+ if (!entry) {
+ hid_err(hid, "Device properties not found.");
+ return LED_OFF;
+ }
+
+ for (i = 0; i < 5; i++)
+ if (led_cdev == entry->led[i]) {
+ value = (entry->led_state >> i) & 1;
+ break;
+ }
+
+ return value ? LED_FULL : LED_OFF;
+}
+#endif
+
int lg4ff_init(struct hid_device *hid)
{
struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
@@ -344,6 +429,7 @@ int lg4ff_init(struct hid_device *hid)
struct hid_report *report;
struct hid_field *field;
struct lg4ff_device_entry *entry;
+ struct lg_drv_data *drv_data;
struct usb_device_descriptor *udesc;
int error, i, j;
__u16 bcdDevice, rev_maj, rev_min;
@@ -423,28 +509,24 @@ int lg4ff_init(struct hid_device *hid)
dev->ff->set_autocenter(dev, 0);
}
- /* Initialize device_list if this is the first device to handle by lg4ff */
- if (!list_inited) {
- INIT_LIST_HEAD(&device_list.list);
- list_inited = 1;
+ /* Get private driver data */
+ drv_data = hid_get_drvdata(hid);
+ if (!drv_data) {
+ hid_err(hid, "Cannot add device, private driver data not allocated\n");
+ return -1;
}
- /* Add the device to device_list */
+ /* Initialize device properties */
entry = kzalloc(sizeof(struct lg4ff_device_entry), GFP_KERNEL);
if (!entry) {
- hid_err(hid, "Cannot add device, insufficient memory.\n");
- return -ENOMEM;
- }
- entry->device_id = kstrdup((&hid->dev)->kobj.name, GFP_KERNEL);
- if (!entry->device_id) {
- hid_err(hid, "Cannot set device_id, insufficient memory.\n");
- kfree(entry);
+ hid_err(hid, "Cannot add device, insufficient memory to allocate device properties.\n");
return -ENOMEM;
}
+ drv_data->device_props = entry;
+
entry->min_range = lg4ff_devices[i].min_range;
entry->max_range = lg4ff_devices[i].max_range;
entry->set_range = lg4ff_devices[i].set_range;
- list_add(&entry->list, &device_list.list);
/* Create sysfs interface */
error = device_create_file(&hid->dev, &dev_attr_range);
@@ -457,32 +539,100 @@ int lg4ff_init(struct hid_device *hid)
if (entry->set_range != NULL)
entry->set_range(hid, entry->range);
- hid_info(hid, "Force feedback for Logitech Speed Force Wireless by Simon Wood <simon@mungewell.org>\n");
+#ifdef CONFIG_LEDS_CLASS
+ /* register led subsystem - G27 only */
+ entry->led_state = 0;
+ for (j = 0; j < 5; j++)
+ entry->led[j] = NULL;
+
+ if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_G27_WHEEL) {
+ struct led_classdev *led;
+ size_t name_sz;
+ char *name;
+
+ lg4ff_set_leds(hid, 0);
+
+ name_sz = strlen(dev_name(&hid->dev)) + 8;
+
+ for (j = 0; j < 5; j++) {
+ led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL);
+ if (!led) {
+ hid_err(hid, "can't allocate memory for LED %d\n", j);
+ goto err;
+ }
+
+ name = (void *)(&led[1]);
+ snprintf(name, name_sz, "%s::RPM%d", dev_name(&hid->dev), j+1);
+ led->name = name;
+ led->brightness = 0;
+ led->max_brightness = 1;
+ led->brightness_get = lg4ff_led_get_brightness;
+ led->brightness_set = lg4ff_led_set_brightness;
+
+ entry->led[j] = led;
+ error = led_classdev_register(&hid->dev, led);
+
+ if (error) {
+ hid_err(hid, "failed to register LED %d. Aborting.\n", j);
+err:
+ /* Deregister LEDs (if any) */
+ for (j = 0; j < 5; j++) {
+ led = entry->led[j];
+ entry->led[j] = NULL;
+ if (!led)
+ continue;
+ led_classdev_unregister(led);
+ kfree(led);
+ }
+ goto out; /* Let the driver continue without LEDs */
+ }
+ }
+ }
+out:
+#endif
+ hid_info(hid, "Force feedback support for Logitech Gaming Wheels\n");
return 0;
}
int lg4ff_deinit(struct hid_device *hid)
{
- bool found = 0;
struct lg4ff_device_entry *entry;
- struct list_head *h, *g;
- list_for_each_safe(h, g, &device_list.list) {
- entry = list_entry(h, struct lg4ff_device_entry, list);
- if (strcmp(entry->device_id, (&hid->dev)->kobj.name) == 0) {
- list_del(h);
- kfree(entry->device_id);
- kfree(entry);
- found = 1;
- break;
- }
- }
+ struct lg_drv_data *drv_data;
+
+ device_remove_file(&hid->dev, &dev_attr_range);
- if (!found) {
- dbg_hid("Device entry not found!\n");
+ drv_data = hid_get_drvdata(hid);
+ if (!drv_data) {
+ hid_err(hid, "Error while deinitializing device, no private driver data.\n");
+ return -1;
+ }
+ entry = drv_data->device_props;
+ if (!entry) {
+ hid_err(hid, "Error while deinitializing device, no device properties data.\n");
return -1;
}
- device_remove_file(&hid->dev, &dev_attr_range);
+#ifdef CONFIG_LEDS_CLASS
+ {
+ int j;
+ struct led_classdev *led;
+
+ /* Deregister LEDs (if any) */
+ for (j = 0; j < 5; j++) {
+
+ led = entry->led[j];
+ entry->led[j] = NULL;
+ if (!led)
+ continue;
+ led_classdev_unregister(led);
+ kfree(led);
+ }
+ }
+#endif
+
+ /* Deallocate memory */
+ kfree(entry);
+
dbg_hid("Device successfully unregistered\n");
return 0;
}
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 25b94253e68f..6e3332a99976 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -70,9 +70,16 @@ struct mt_class {
bool is_indirect; /* true for touchpads */
};
+struct mt_fields {
+ unsigned usages[HID_MAX_FIELDS];
+ unsigned int length;
+};
+
struct mt_device {
struct mt_slot curdata; /* placeholder of incoming data */
struct mt_class mtclass; /* our mt device class */
+ struct mt_fields *fields; /* temporary placeholder for storing the
+ multitouch fields */
unsigned last_field_index; /* last field index of the report */
unsigned last_slot_field; /* the last field of a slot */
__s8 inputmode; /* InputMode HID feature, -1 if non-existent */
@@ -278,11 +285,15 @@ static void set_abs(struct input_dev *input, unsigned int code,
input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
}
-static void set_last_slot_field(struct hid_usage *usage, struct mt_device *td,
+static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
struct hid_input *hi)
{
- if (!test_bit(usage->hid, hi->input->absbit))
- td->last_slot_field = usage->hid;
+ struct mt_fields *f = td->fields;
+
+ if (f->length >= HID_MAX_FIELDS)
+ return;
+
+ f->usages[f->length++] = usage->hid;
}
static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
@@ -333,7 +344,7 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
cls->sn_move);
/* touchscreen emulation */
set_abs(hi->input, ABS_X, field, cls->sn_move);
- set_last_slot_field(usage, td, hi);
+ mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_GD_Y:
@@ -343,7 +354,7 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
cls->sn_move);
/* touchscreen emulation */
set_abs(hi->input, ABS_Y, field, cls->sn_move);
- set_last_slot_field(usage, td, hi);
+ mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
}
@@ -352,24 +363,24 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
case HID_UP_DIGITIZER:
switch (usage->hid) {
case HID_DG_INRANGE:
- set_last_slot_field(usage, td, hi);
+ mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_DG_CONFIDENCE:
- set_last_slot_field(usage, td, hi);
+ mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_DG_TIPSWITCH:
hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
- set_last_slot_field(usage, td, hi);
+ mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_DG_CONTACTID:
if (!td->maxcontacts)
td->maxcontacts = MT_DEFAULT_MAXCONTACT;
input_mt_init_slots(hi->input, td->maxcontacts);
- td->last_slot_field = usage->hid;
+ mt_store_field(usage, td, hi);
td->last_field_index = field->index;
td->touches_by_report++;
return 1;
@@ -378,7 +389,7 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
EV_ABS, ABS_MT_TOUCH_MAJOR);
set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
cls->sn_width);
- set_last_slot_field(usage, td, hi);
+ mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_DG_HEIGHT:
@@ -388,7 +399,7 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
cls->sn_height);
input_set_abs_params(hi->input,
ABS_MT_ORIENTATION, 0, 1, 0, 0);
- set_last_slot_field(usage, td, hi);
+ mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_DG_TIPPRESSURE:
@@ -399,7 +410,7 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
/* touchscreen emulation */
set_abs(hi->input, ABS_PRESSURE, field,
cls->sn_pressure);
- set_last_slot_field(usage, td, hi);
+ mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_DG_CONTACTCOUNT:
@@ -653,6 +664,16 @@ static void mt_post_parse_default_settings(struct mt_device *td)
td->mtclass.quirks = quirks;
}
+static void mt_post_parse(struct mt_device *td)
+{
+ struct mt_fields *f = td->fields;
+
+ if (td->touches_by_report > 0) {
+ int field_count_per_touch = f->length / td->touches_by_report;
+ td->last_slot_field = f->usages[field_count_per_touch - 1];
+ }
+}
+
static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int ret, i;
@@ -683,6 +704,13 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
td->maxcontact_report_id = -1;
hid_set_drvdata(hdev, td);
+ td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL);
+ if (!td->fields) {
+ dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
+ ret = -ENOMEM;
+ goto fail;
+ }
+
ret = hid_parse(hdev);
if (ret != 0)
goto fail;
@@ -691,6 +719,8 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
if (ret)
goto fail;
+ mt_post_parse(td);
+
if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
mt_post_parse_default_settings(td);
@@ -708,9 +738,13 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
mt_set_maxcontacts(hdev);
mt_set_input_mode(hdev);
+ kfree(td->fields);
+ td->fields = NULL;
+
return 0;
fail:
+ kfree(td->fields);
kfree(td);
return ret;
}
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