csdexter

--- drivers/staging/fbtft/fbtft-bus.c.orig      2021-05-11 17:36:24.279207628 +0300
+++ drivers/staging/fbtft/fbtft-bus.c   2021-05-11 17:57:04.815205526 +0300
@@ -135,8 +135,13 @@
        remain = len / 2;
        vmem16 = (u16 *)(par->info->screen_buffer + offset);
 
-       if (par->gpio.dc)
-               gpiod_set_value(par->gpio.dc, 1);
+       if (par->gpio.dc) {
+               if (gpiod_cansleep(par->gpio.dc)) {

csdexter

$ speaker-test -c 6 -D hw:1 -t wav

speaker-test 1.1.3

Playback device is hw:1
Stream parameters are 48000Hz, S16_LE, 6 channels
WAV file(s)
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 96 to 87381
Period size range from 48 to 43690

csdexter

$ sudo lsusb -v -d 06f8:

Bus 001 Device 014: ID 06f8:c000 Guillemot Corp. Hercules Muse Pocket
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 

csdexter

$ pacmd list-cards
2 card(s) available.
    index: 0
        name: <alsa_card.pci-0000_00_1b.0>
        driver: <module-alsa-card.c>
        owner module: 6
        properties:
                alsa.card = "0"
                alsa.card_name = "HDA Intel PCH"
                alsa.long_card_name = "HDA Intel PCH at 0xe2e60000 irq 31"

csdexter

$ cat /proc/asound/cards
 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xe2e60000 irq 31
 1 [Audio          ]: USB-Audio - USB Audio
                      USB Audio at usb-0000:00:1a.0-1.1.3.1, full speed
$ ll /proc/asound/card1
total 0
-r--r--r--. 1 root root 0 Sep 29 20:20 id
-r--r--r--. 1 root root 0 Sep 29 20:20 stream0
-r--r--r--. 1 root root 0 Sep 29 20:20 usbbus

csdexter

Section "InputClass"
    Identifier "madcatz-rat7"
    Driver "evdev"
    MatchUSBID "0738:1708"
    MatchIsPointer "true"
    Option "ButtonMapping" "1 2 3 4 5 0 0 8 9 7 6 12 13 14 15 16 17"
    Option "EmulateWheel" "false"
EndSection

csdexter

// Watchdog signal generator for ... pretty much anyone stuck with
// LinuxCNC and its demented charge pump design.

// PB2 goes to the parallel port's Amplifier Enable output pin,
// PB1 goes to the on-board LED which turns on when we're active,
// PB0 goes to the parallel cable's Charge Pump input wire.

#include <avr/sleep.h>

// Set our electrical interface up.