1 // SPDX-License-Identifier: GPL-2.0
6  * Based on usbled.c by Greg Kroah-Hartman (greg@kroah.com)
32 static const char *display_textmodes[] = {"raw", "hex", "ascii"};
57 	if (count > 0 && buf[count-1] == '\n')  in my_memlen()
58 		return count - 1;  in my_memlen()
67 	if (mydev->powered && !mydev->has_interface_pm) {  in update_display_powered()
68 		rc = usb_autopm_get_interface(mydev->intf);  in update_display_powered()
71 		mydev->has_interface_pm = 1;  in update_display_powered()
74 	if (mydev->shadow_power != 1)  in update_display_powered()
77 	rc = usb_control_msg_send(mydev->udev, 0, 0x12, 0x48,  in update_display_powered()
79 				  (0x00 * 0x100) + (mydev->powered ? 1 : 0),  in update_display_powered()
82 		dev_dbg(&mydev->udev->dev, "power retval = %d\n", rc);  in update_display_powered()
84 	if (!mydev->powered && mydev->has_interface_pm) {  in update_display_powered()
85 		usb_autopm_put_interface(mydev->intf);  in update_display_powered()
86 		mydev->has_interface_pm = 0;  in update_display_powered()
94 	if(mydev->shadow_power != 1)  in update_display_mode()
97 	rc = usb_control_msg_send(mydev->udev, 0, 0x12, 0x48,  in update_display_mode()
99 				  (mydev->mode_msb * 0x100) + mydev->mode_lsb,  in update_display_mode()
103 		dev_dbg(&mydev->udev->dev, "mode retval = %d\n", rc);  in update_display_mode()
113 	if(mydev->shadow_power != 1)  in update_display_visual()
117 	for (i = 0; i < mydev->textlength; i++)  in update_display_visual()
118 		buffer[i] = mydev->text[mydev->textlength-1-i];  in update_display_visual()
120 	rc = usb_control_msg_send(mydev->udev, 0, 0x12, 0x48,  in update_display_visual()
122 				  (0 * 0x100) + mydev->textmode, /* mode  */  in update_display_visual()
123 				  &buffer, mydev->textlength, 2000, mf);  in update_display_visual()
126 		dev_dbg(&mydev->udev->dev, "write retval = %d\n", rc);  in update_display_visual()
129 	for (i = 0; i < sizeof(mydev->decimals); i++)  in update_display_visual()
130 		decimals |= mydev->decimals[i] << i;  in update_display_visual()
132 	rc = usb_control_msg_send(mydev->udev, 0, 0x12, 0x48,  in update_display_visual()
138 		dev_dbg(&mydev->udev->dev, "decimal retval = %d\n", rc);  in update_display_visual()
148 	return sprintf(buf, "%u\n", mydev->name);		\
157 	mydev->name = simple_strtoul(buf, NULL, 10);		\
170 	return sysfs_emit(buf, "%s\n", mydev->text);  in text_show()
180 	if (end > sizeof(mydev->text))  in text_store()
181 		return -EINVAL;  in text_store()
183 	memset(mydev->text, 0, sizeof(mydev->text));  in text_store()
184 	mydev->textlength = end;  in text_store()
187 		memcpy(mydev->text, buf, end);  in text_store()
203 	for (i = 0; i < sizeof(mydev->decimals); i++) {  in decimals_show()
204 		pos = sizeof(mydev->decimals) - 1 - i;  in decimals_show()
205 		if (mydev->decimals[i] == 0)  in decimals_show()
207 		else if (mydev->decimals[i] == 1)  in decimals_show()
213 	buf[sizeof(mydev->decimals)] = '\n';  in decimals_show()
214 	return sizeof(mydev->decimals) + 1;  in decimals_show()
225 	if (end > sizeof(mydev->decimals))  in decimals_store()
226 		return -EINVAL;  in decimals_store()
230 			return -EINVAL;  in decimals_store()
232 	memset(mydev->decimals, 0, sizeof(mydev->decimals));  in decimals_store()
235 			mydev->decimals[end-1-i] = 1;  in decimals_store()
254 		if (mydev->textmode == i) {  in textmode_show()
281 	mydev->textmode = i;  in textmode_store()
309 	int rc = -ENOMEM;  in sevseg_probe()
315 	mydev->udev = usb_get_dev(udev);  in sevseg_probe()
316 	mydev->intf = interface;  in sevseg_probe()
320 	mydev->shadow_power = 1; /* currently active */  in sevseg_probe()
321 	mydev->has_interface_pm = 0; /* have not issued autopm_get */  in sevseg_probe()
324 	mydev->textmode = 0x02; /* ascii mode */  in sevseg_probe()
325 	mydev->mode_msb = 0x06; /* 6 characters */  in sevseg_probe()
326 	mydev->mode_lsb = 0x3f; /* scanmode for 6 chars */  in sevseg_probe()
328 	dev_info(&interface->dev, "USB 7 Segment device now attached\n");  in sevseg_probe()
341 	usb_put_dev(mydev->udev);  in sevseg_disconnect()
343 	dev_info(&interface->dev, "USB 7 Segment now disconnected\n");  in sevseg_disconnect()
351 	mydev->shadow_power = 0;  in sevseg_suspend()
361 	mydev->shadow_power = 1;  in sevseg_resume()
373 	mydev->shadow_power = 1;  in sevseg_reset_resume()