HID: lg4ff - Move handling of Logitech wheels to lg4ff driver

[mirror_ubuntu-bionic-kernel.git] / drivers / hid / hid-lg4ff.c

diff --git a/drivers/hid/hid-lg4ff.c b/drivers/hid/hid-lg4ff.c
index fa550c8e1d1bc639bd3e9c34a299903391bca44a..1fcb2da32785fad80ab7653292d411b22d34dba9 100644 (file)
--- a/drivers/hid/hid-lg4ff.c
+++ b/drivers/hid/hid-lg4ff.c
@@ -29,17 +29,32 @@
 
 #include "usbhid/usbhid.h"
 #include "hid-lg.h"
+#include "hid-ids.h"
 
-struct lg4ff_device {
-       struct hid_report *report;
-};
-
-static const signed short ff4_wheel_ac[] = {
+static const signed short lg4ff_wheel_effects[] = {
        FF_CONSTANT,
        FF_AUTOCENTER,
        -1
 };
 
+struct lg4ff_wheel {
+       const __u32 product_id;
+       const signed short *ff_effects;
+       const __u16 min_range;
+       const __u16 max_range;
+};
+
+static const struct lg4ff_wheel lg4ff_devices[] = {
+       {USB_DEVICE_ID_LOGITECH_WHEEL,       lg4ff_wheel_effects, 40, 270},
+       {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL,  lg4ff_wheel_effects, 40, 270},
+       {USB_DEVICE_ID_LOGITECH_DFP_WHEEL,   lg4ff_wheel_effects, 40, 900},
+       {USB_DEVICE_ID_LOGITECH_G25_WHEEL,   lg4ff_wheel_effects, 40, 900},
+       {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL,  lg4ff_wheel_effects, 40, 900},
+       {USB_DEVICE_ID_LOGITECH_G27_WHEEL,   lg4ff_wheel_effects, 40, 900},
+       {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2, lg4ff_wheel_effects, 40, 270},
+       {USB_DEVICE_ID_LOGITECH_WII_WHEEL,   lg4ff_wheel_effects, 40, 270}
+};
+
 static int hid_lg4ff_play(struct input_dev *dev, void *data,
                         struct ff_effect *effect)
 {
@@ -55,13 +70,12 @@ static int hid_lg4ff_play(struct input_dev *dev, void *data,
                x = effect->u.ramp.start_level + 0x80;  /* 0x80 is no force */
                CLAMP(x);
                report->field[0]->value[0] = 0x11;      /* Slot 1 */
-               report->field[0]->value[1] = 0x10;
+               report->field[0]->value[1] = 0x08;
                report->field[0]->value[2] = x;
-               report->field[0]->value[3] = 0x00;
+               report->field[0]->value[3] = 0x80;
                report->field[0]->value[4] = 0x00;
-               report->field[0]->value[5] = 0x08;
+               report->field[0]->value[5] = 0x00;
                report->field[0]->value[6] = 0x00;
-               dbg_hid("Autocenter, x=0x%02X\n", x);
 
                usbhid_submit_report(hid, report, USB_DIR_OUT);
                break;
@@ -74,15 +88,14 @@ static void hid_lg4ff_set_autocenter(struct input_dev *dev, u16 magnitude)
        struct hid_device *hid = input_get_drvdata(dev);
        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);
-       __s32 *value = report->field[0]->value;
 
-       *value++ = 0xfe;
-       *value++ = 0x0d;
-       *value++ = 0x07;
-       *value++ = 0x07;
-       *value++ = (magnitude >> 8) & 0xff;
-       *value++ = 0x00;
-       *value = 0x00;
+       report->field[0]->value[0] = 0xfe;
+       report->field[0]->value[1] = 0x0d;
+       report->field[0]->value[2] = magnitude >> 13;
+       report->field[0]->value[3] = magnitude >> 13;
+       report->field[0]->value[4] = magnitude >> 8;
+       report->field[0]->value[5] = 0x00;
+       report->field[0]->value[6] = 0x00;
 
        usbhid_submit_report(hid, report, USB_DIR_OUT);
 }
@@ -95,9 +108,7 @@ int lg4ff_init(struct hid_device *hid)
        struct input_dev *dev = hidinput->input;
        struct hid_report *report;
        struct hid_field *field;
-       const signed short *ff_bits = ff4_wheel_ac;
-       int error;
-       int i;
+       int error, i, j;
 
        /* Find the report to use */
        if (list_empty(report_list)) {
@@ -117,9 +128,24 @@ int lg4ff_init(struct hid_device *hid)
                hid_err(hid, "NULL field\n");
                return -1;
        }
+       
+       /* Check what wheel has been connected */
+       for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) {
+               if (hid->product == lg4ff_devices[i].product_id) {
+                       dbg_hid("Found compatible device, product ID %04X\n", lg4ff_devices[i].product_id);
+                       break;
+               }
+       }
+
+       if (i == ARRAY_SIZE(lg4ff_devices)) {
+               hid_err(hid, "Device is not supported by lg4ff driver. If you think it should be, consider reporting a bug to"
+                            "LKML, Simon Wood <simon@mungewell.org> or Michal Maly <madcatxster@gmail.com>\n");
+               return -1;
+       }
 
-       for (i = 0; ff_bits[i] >= 0; i++)
-               set_bit(ff_bits[i], dev->ffbit);
+       /* Set supported force feedback capabilities */
+       for (j = 0; lg4ff_devices[i].ff_effects[j] >= 0; j++)
+               set_bit(lg4ff_devices[i].ff_effects[j], dev->ffbit);
 
        error = input_ff_create_memless(dev, NULL, hid_lg4ff_play);