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[Core] usb_device_state: consolidate usb state handling across implementations (#24258)

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* usb_device_state: add idle_rate, led and protocol

Previously all usb drivers and platform implementations (expect for our
oddball atsam) tracked the same two global variables:

- keyboard_protocol: to indicate if we are in report or boot protocol
- keyboard_idle: for the idle_rate of the keyboard endpoint

And a local variable that was exposed trough some indirection:

- keyboard_led_state: for the currently set indicator leds (caps lock etc.)

These have all been moved into the usb_device_state struct wich is
accessible by getters and setters.

This reduces code duplication and centralizes the state management
across platforms and drivers.

Signed-off-by: Stefan Kerkmann <karlk90@pm.me>

* usb_device_state: reset protocol on reset

The usb hid specification section 7.2.6 states:

When initialized, all devices default to report protocol. However the
host should not make any assumptions about the device’s state and should
set the desired protocol whenever initializing a device.

Thus on reset we should always do exactly that.

Signed-off-by: Stefan Kerkmann <karlk90@pm.me>

* keyboards: fix oversize warnings

Signed-off-by: Stefan Kerkmann <karlk90@pm.me>

---------

Signed-off-by: Stefan Kerkmann <karlk90@pm.me>
This commit is contained in:
Stefan Kerkmann 2024-10-18 09:57:08 +02:00 • committed by GitHub
parent 80f8aae3ec
commit 3f9d464412
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
20 changed files with 165 additions and 130 deletions
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38
tmk_core/protocol/lufa/lufa.c
View file

@ -72,20 +72,14 @@
# define USB_WAIT_FOR_ENUMERATION
#endif
uint8_t keyboard_idle = 0;
/* 0: Boot Protocol, 1: Report Protocol(default) */
uint8_t keyboard_protocol = 1;
static uint8_t keyboard_led_state = 0;
static report_keyboard_t keyboard_report_sent;
/* Host driver */
static uint8_t keyboard_leds(void);
static void send_keyboard(report_keyboard_t *report);
static void send_nkro(report_nkro_t *report);
static void send_mouse(report_mouse_t *report);
static void send_extra(report_extra_t *report);
host_driver_t lufa_driver = {keyboard_leds, send_keyboard, send_nkro, send_mouse, send_extra};
static void send_keyboard(report_keyboard_t *report);
static void send_nkro(report_nkro_t *report);
static void send_mouse(report_mouse_t *report);
static void send_extra(report_extra_t *report);
host_driver_t lufa_driver = {.keyboard_leds = usb_device_state_get_leds, .send_keyboard = send_keyboard, .send_nkro = send_nkro, .send_mouse = send_mouse, .send_extra = send_extra};
void send_report(uint8_t endpoint, void *report, size_t size) {
uint8_t timeout = 255;
@ -271,6 +265,7 @@ void EVENT_USB_Device_Disconnect(void) {
void EVENT_USB_Device_Reset(void) {
print("[R]");
usb_device_state_set_reset();
usb_device_state_set_protocol(USB_PROTOCOL_REPORT);
}
/** \brief Event USB Device Connect
@ -453,10 +448,10 @@ void EVENT_USB_Device_ControlRequest(void) {
uint8_t report_id = Endpoint_Read_8();
if (report_id == REPORT_ID_KEYBOARD || report_id == REPORT_ID_NKRO) {
keyboard_led_state = Endpoint_Read_8();
usb_device_state_set_leds(Endpoint_Read_8());
}
} else {
keyboard_led_state = Endpoint_Read_8();
usb_device_state_set_leds(Endpoint_Read_8());
}
Endpoint_ClearOUT();
@ -473,7 +468,7 @@ void EVENT_USB_Device_ControlRequest(void) {
Endpoint_ClearSETUP();
while (!(Endpoint_IsINReady()))
;
Endpoint_Write_8(keyboard_protocol);
Endpoint_Write_8(usb_device_state_get_protocol());
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
@ -486,7 +481,7 @@ void EVENT_USB_Device_ControlRequest(void) {
Endpoint_ClearSETUP();
Endpoint_ClearStatusStage();
keyboard_protocol = (USB_ControlRequest.wValue & 0xFF);
usb_device_state_set_protocol(USB_ControlRequest.wValue & 0xFF);
clear_keyboard();
}
}
@ -497,7 +492,7 @@ void EVENT_USB_Device_ControlRequest(void) {
Endpoint_ClearSETUP();
Endpoint_ClearStatusStage();
keyboard_idle = ((USB_ControlRequest.wValue & 0xFF00) >> 8);
usb_device_state_set_idle_rate(USB_ControlRequest.wValue >> 8);
}
break;
@ -506,7 +501,7 @@ void EVENT_USB_Device_ControlRequest(void) {
Endpoint_ClearSETUP();
while (!(Endpoint_IsINReady()))
;
Endpoint_Write_8(keyboard_idle);
Endpoint_Write_8(usb_device_state_get_idle_rate());
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
@ -522,13 +517,6 @@ void EVENT_USB_Device_ControlRequest(void) {
/*******************************************************************************
* Host driver
******************************************************************************/
/** \brief Keyboard LEDs
*
* FIXME: Needs doc
*/
static uint8_t keyboard_leds(void) {
return keyboard_led_state;
}
/** \brief Send Keyboard
*
@ -536,7 +524,7 @@ static uint8_t keyboard_leds(void) {
*/
static void send_keyboard(report_keyboard_t *report) {
/* If we're in Boot Protocol, don't send any report ID or other funky fields */
if (!keyboard_protocol) {
if (usb_device_state_get_protocol() == USB_PROTOCOL_BOOT) {
send_report(KEYBOARD_IN_EPNUM, &report->mods, 8);
} else {
send_report(KEYBOARD_IN_EPNUM, report, KEYBOARD_REPORT_SIZE);