diff options
| -rw-r--r-- | drivers/hid/hid-lg4ff.c | 266 |
1 files changed, 190 insertions, 76 deletions
diff --git a/drivers/hid/hid-lg4ff.c b/drivers/hid/hid-lg4ff.c index db0dd9b17e53..190c5e3f46ce 100644 --- a/drivers/hid/hid-lg4ff.c +++ b/drivers/hid/hid-lg4ff.c @@ -32,21 +32,15 @@ #include "hid-lg.h" #include "hid-ids.h" -#define DFGT_REV_MAJ 0x13 -#define DFGT_REV_MIN 0x22 -#define DFGT2_REV_MIN 0x26 -#define DFP_REV_MAJ 0x11 -#define DFP_REV_MIN 0x06 -#define FFEX_REV_MAJ 0x21 -#define FFEX_REV_MIN 0x00 -#define G25_REV_MAJ 0x12 -#define G25_REV_MIN 0x22 -#define G27_REV_MAJ 0x12 -#define G27_REV_MIN 0x38 -#define G27_2_REV_MIN 0x39 - #define to_hid_device(pdev) container_of(pdev, struct hid_device, dev) +#define LG4FF_MMODE_DONE 0 +#define LG4FF_MMODE_SWITCHED 1 +#define LG4FF_MMODE_NOT_MULTIMODE 2 + +#define LG4FF_FFEX_REV_MAJ 0x21 +#define LG4FF_FFEX_REV_MIN 0x00 + static void hid_lg4ff_set_range_dfp(struct hid_device *hid, u16 range); static void hid_lg4ff_set_range_g25(struct hid_device *hid, u16 range); @@ -77,6 +71,22 @@ struct lg4ff_wheel { void (*set_range)(struct hid_device *hid, u16 range); }; +struct lg4ff_compat_mode_switch { + const __u8 cmd_count; /* Number of commands to send */ + const __u8 cmd[]; +}; + +struct lg4ff_wheel_ident_info { + const u16 mask; + const u16 result; + const u16 real_product_id; +}; + +struct lg4ff_wheel_ident_checklist { + const u32 count; + const struct lg4ff_wheel_ident_info *models[]; +}; + static const struct lg4ff_wheel lg4ff_devices[] = { {USB_DEVICE_ID_LOGITECH_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, @@ -88,48 +98,63 @@ static const struct lg4ff_wheel lg4ff_devices[] = { {USB_DEVICE_ID_LOGITECH_WII_WHEEL, lg4ff_wheel_effects, 40, 270, NULL} }; -struct lg4ff_native_cmd { - const __u8 cmd_num; /* Number of commands to send */ - const __u8 cmd[]; +/* Multimode wheel identificators */ +static const struct lg4ff_wheel_ident_info lg4ff_dfp_ident_info = { + 0xf000, + 0x1000, + USB_DEVICE_ID_LOGITECH_DFP_WHEEL +}; + +static const struct lg4ff_wheel_ident_info lg4ff_g25_ident_info = { + 0xff00, + 0x1200, + USB_DEVICE_ID_LOGITECH_G25_WHEEL +}; + +static const struct lg4ff_wheel_ident_info lg4ff_g27_ident_info = { + 0xfff0, + 0x1230, + USB_DEVICE_ID_LOGITECH_G27_WHEEL }; -struct lg4ff_usb_revision { - const __u16 rev_maj; - const __u16 rev_min; - const struct lg4ff_native_cmd *command; +static const struct lg4ff_wheel_ident_info lg4ff_dfgt_ident_info = { + 0xff00, + 0x1300, + USB_DEVICE_ID_LOGITECH_DFGT_WHEEL }; -static const struct lg4ff_native_cmd native_dfp = { +/* Multimode wheel identification checklists */ +static const struct lg4ff_wheel_ident_checklist lg4ff_main_checklist = { + 4, + {&lg4ff_dfgt_ident_info, + &lg4ff_g27_ident_info, + &lg4ff_g25_ident_info, + &lg4ff_dfp_ident_info} +}; + +/* Compatibility mode switching commands */ +static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_dfp = { 1, {0xf8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00} }; -static const struct lg4ff_native_cmd native_dfgt = { +static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_dfgt = { 2, {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1st command */ 0xf8, 0x09, 0x03, 0x01, 0x00, 0x00, 0x00} /* 2nd command */ }; -static const struct lg4ff_native_cmd native_g25 = { +static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_g25 = { 1, {0xf8, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00} }; -static const struct lg4ff_native_cmd native_g27 = { +static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_g27 = { 2, {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1st command */ 0xf8, 0x09, 0x04, 0x01, 0x00, 0x00, 0x00} /* 2nd command */ }; -static const struct lg4ff_usb_revision lg4ff_revs[] = { - {DFGT_REV_MAJ, DFGT_REV_MIN, &native_dfgt}, /* Driving Force GT */ - {DFGT_REV_MAJ, DFGT2_REV_MIN, &native_dfgt}, /* Driving Force GT v2 */ - {DFP_REV_MAJ, DFP_REV_MIN, &native_dfp}, /* Driving Force Pro */ - {G25_REV_MAJ, G25_REV_MIN, &native_g25}, /* G25 */ - {G27_REV_MAJ, G27_REV_MIN, &native_g27}, /* G27 */ - {G27_REV_MAJ, G27_2_REV_MIN, &native_g27}, /* G27 v2 */ -}; - /* Recalculates X axis value accordingly to currently selected range */ static __s32 lg4ff_adjust_dfp_x_axis(__s32 value, __u16 range) { @@ -396,19 +421,22 @@ static void hid_lg4ff_set_range_dfp(struct hid_device *hid, __u16 range) hid_hw_request(hid, report, HID_REQ_SET_REPORT); } -static void hid_lg4ff_switch_native(struct hid_device *hid, const struct lg4ff_native_cmd *cmd) +static int lg4ff_switch_compatibility_mode(struct hid_device *hid, const struct lg4ff_compat_mode_switch *s) { - 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); - __u8 i, j; + struct usb_device *usbdev = hid_to_usb_dev(hid); + struct usbhid_device *usbhid = hid->driver_data; + u8 i; - j = 0; - while (j < 7*cmd->cmd_num) { - for (i = 0; i < 7; i++) - report->field[0]->value[i] = cmd->cmd[j++]; + for (i = 0; i < s->cmd_count; i++) { + int xferd, ret; + u8 data[7]; - hid_hw_request(hid, report, HID_REQ_SET_REPORT); + memcpy(data, s->cmd + (7*i), 7); + ret = usb_interrupt_msg(usbdev, usbhid->urbout->pipe, data, 7, &xferd, USB_CTRL_SET_TIMEOUT); + if (ret) + return ret; } + return 0; } /* Read current range and display it in terminal */ @@ -555,20 +583,129 @@ static enum led_brightness lg4ff_led_get_brightness(struct led_classdev *led_cde } #endif +static u16 lg4ff_identify_multimode_wheel(struct hid_device *hid, const u16 reported_product_id, const u16 bcdDevice) +{ + const struct lg4ff_wheel_ident_checklist *checklist; + int i, from_idx, to_idx; + + switch (reported_product_id) { + case USB_DEVICE_ID_LOGITECH_WHEEL: + case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: + checklist = &lg4ff_main_checklist; + from_idx = 0; + to_idx = checklist->count - 1; + break; + case USB_DEVICE_ID_LOGITECH_G25_WHEEL: + checklist = &lg4ff_main_checklist; + from_idx = 0; + to_idx = checklist->count - 2; /* End identity check at G25 */ + break; + case USB_DEVICE_ID_LOGITECH_G27_WHEEL: + checklist = &lg4ff_main_checklist; + from_idx = 1; /* Start identity check at G27 */ + to_idx = checklist->count - 3; /* End identity check at G27 */ + break; + case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: + checklist = &lg4ff_main_checklist; + from_idx = 0; + to_idx = checklist->count - 4; /* End identity check at DFGT */ + break; + default: + return 0; + } + + for (i = from_idx; i <= to_idx; i++) { + const u16 mask = checklist->models[i]->mask; + const u16 result = checklist->models[i]->result; + const u16 real_product_id = checklist->models[i]->real_product_id; + + if ((bcdDevice & mask) == result) { + dbg_hid("Found wheel with real PID %X whose reported PID is %X\n", real_product_id, reported_product_id); + return real_product_id; + } + } + + /* No match found. This is an unknown wheel model, do not touch it */ + dbg_hid("Wheel with bcdDevice %X was not recognized as multimode wheel, leaving in its current mode\n", bcdDevice); + return 0; +} + +static int lg4ff_handle_multimode_wheel(struct hid_device *hid, u16 *real_product_id, const u16 bcdDevice) +{ + const u16 reported_product_id = hid->product; + int ret; + + *real_product_id = lg4ff_identify_multimode_wheel(hid, reported_product_id, bcdDevice); + /* Probed wheel is not a multimode wheel */ + if (!*real_product_id) { + *real_product_id = reported_product_id; + dbg_hid("Wheel is not a multimode wheel\n"); + return LG4FF_MMODE_NOT_MULTIMODE; + } + + /* Switch from "Driving Force" mode to native mode automatically. + * Otherwise keep the wheel in its current mode */ + if (reported_product_id == USB_DEVICE_ID_LOGITECH_WHEEL && + reported_product_id != *real_product_id) { + const struct lg4ff_compat_mode_switch *s; + + switch (*real_product_id) { + case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: + s = &lg4ff_mode_switch_dfp; + break; + case USB_DEVICE_ID_LOGITECH_G25_WHEEL: + s = &lg4ff_mode_switch_g25; + break; + case USB_DEVICE_ID_LOGITECH_G27_WHEEL: + s = &lg4ff_mode_switch_g27; + break; + case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: + s = &lg4ff_mode_switch_dfgt; + break; + default: + hid_err(hid, "Invalid product id %X\n", *real_product_id); + return LG4FF_MMODE_DONE; + } + + ret = lg4ff_switch_compatibility_mode(hid, s); + if (ret) { + /* Wheel could not have been switched to native mode, + * leave it in "Driving Force" mode and continue */ + hid_err(hid, "Unable to switch wheel mode, errno %d\n", ret); + return LG4FF_MMODE_DONE; + } + return LG4FF_MMODE_SWITCHED; + } + + return LG4FF_MMODE_DONE; +} + + int lg4ff_init(struct hid_device *hid) { struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); struct input_dev *dev = hidinput->input; + const struct usb_device_descriptor *udesc = &(hid_to_usb_dev(hid)->descriptor); + const u16 bcdDevice = le16_to_cpu(udesc->bcdDevice); 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; + int error, i, j, ret; + u16 real_product_id; /* Check that the report looks ok */ if (!hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7)) return -1; + /* Check if a multimode wheel has been connected and + * handle it appropriately */ + ret = lg4ff_handle_multimode_wheel(hid, &real_product_id, bcdDevice); + + /* Wheel has been told to switch to native mode. There is no point in going on + * with the initialization as the wheel will do a USB reset when it switches mode + */ + if (ret == LG4FF_MMODE_SWITCHED) + return 0; + /* Check what wheel has been connected */ for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) { if (hid->product == lg4ff_devices[i].product_id) { @@ -583,28 +720,6 @@ int lg4ff_init(struct hid_device *hid) return -1; } - /* Attempt to switch wheel to native mode when applicable */ - udesc = &(hid_to_usb_dev(hid)->descriptor); - if (!udesc) { - hid_err(hid, "NULL USB device descriptor\n"); - return -1; - } - bcdDevice = le16_to_cpu(udesc->bcdDevice); - rev_maj = bcdDevice >> 8; - rev_min = bcdDevice & 0xff; - - if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_WHEEL) { - dbg_hid("Generic wheel detected, can it do native?\n"); - dbg_hid("USB revision: %2x.%02x\n", rev_maj, rev_min); - - for (j = 0; j < ARRAY_SIZE(lg4ff_revs); j++) { - if (lg4ff_revs[j].rev_maj == rev_maj && lg4ff_revs[j].rev_min == rev_min) { - hid_lg4ff_switch_native(hid, lg4ff_revs[j].command); - hid_info(hid, "Switched to native mode\n"); - } - } - } - /* 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); @@ -637,7 +752,9 @@ int lg4ff_init(struct hid_device *hid) /* Check if autocentering is available and * set the centering force to zero by default */ if (test_bit(FF_AUTOCENTER, dev->ffbit)) { - if (rev_maj == FFEX_REV_MAJ && rev_min == FFEX_REV_MIN) /* Formula Force EX expects different autocentering command */ + /* Formula Force EX expects different autocentering command */ + if ((bcdDevice >> 8) == LG4FF_FFEX_REV_MAJ && + (bcdDevice & 0xff) == LG4FF_FFEX_REV_MIN) dev->ff->set_autocenter = hid_lg4ff_set_autocenter_ffex; else dev->ff->set_autocenter = hid_lg4ff_set_autocenter_default; @@ -711,25 +828,21 @@ out: return 0; } - - int lg4ff_deinit(struct hid_device *hid) { struct lg4ff_device_entry *entry; struct lg_drv_data *drv_data; - device_remove_file(&hid->dev, &dev_attr_range); - 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; - } + if (!entry) + goto out; /* Nothing more to do */ + + device_remove_file(&hid->dev, &dev_attr_range); #ifdef CONFIG_LEDS_CLASS { @@ -752,6 +865,7 @@ int lg4ff_deinit(struct hid_device *hid) /* Deallocate memory */ kfree(entry); +out: dbg_hid("Device successfully unregistered\n"); return 0; } |