forked from luck/tmp_suning_uos_patched
usb/misc/usbled: Add Riso Kagaku Webmail Notifier
Add support for the "Webmail Notifier" (USB powered LED for signaling new emails) made by Riso Kagaku Corp. which displays 7 distinct colors. USB Protocol initially reverse engineered by https://code.google.com/p/usbmailnotifier/. Signed-off-by: Christian Vogel <vogelchr@vogel.cx> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -22,8 +22,27 @@
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enum led_type {
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DELCOM_VISUAL_SIGNAL_INDICATOR,
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DREAM_CHEEKY_WEBMAIL_NOTIFIER,
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RISO_KAGAKU_LED
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};
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/* the Webmail LED made by RISO KAGAKU CORP. decodes a color index
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internally, we want to keep the red+green+blue sysfs api, so we decode
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from 1-bit RGB to the riso kagaku color index according to this table... */
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static unsigned const char riso_kagaku_tbl[] = {
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/* R+2G+4B -> riso kagaku color index */
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[0] = 0, /* black */
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[1] = 2, /* red */
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[2] = 1, /* green */
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[3] = 5, /* yellow */
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[4] = 3, /* blue */
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[5] = 6, /* magenta */
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[6] = 4, /* cyan */
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[7] = 7 /* white */
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};
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#define RISO_KAGAKU_IX(r,g,b) riso_kagaku_tbl[((r)?1:0)+((g)?2:0)+((b)?4:0)]
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/* table of devices that work with this driver */
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static const struct usb_device_id id_table[] = {
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{ USB_DEVICE(0x0fc5, 0x1223),
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@ -32,6 +51,8 @@ static const struct usb_device_id id_table[] = {
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.driver_info = DREAM_CHEEKY_WEBMAIL_NOTIFIER },
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{ USB_DEVICE(0x1d34, 0x000a),
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.driver_info = DREAM_CHEEKY_WEBMAIL_NOTIFIER },
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{ USB_DEVICE(0x1294, 0x1320),
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.driver_info = RISO_KAGAKU_LED },
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{ },
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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@ -48,6 +69,7 @@ static void change_color(struct usb_led *led)
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{
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int retval = 0;
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unsigned char *buffer;
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int actlength;
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buffer = kmalloc(8, GFP_KERNEL);
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if (!buffer) {
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@ -104,6 +126,18 @@ static void change_color(struct usb_led *led)
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2000);
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break;
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case RISO_KAGAKU_LED:
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buffer[0] = RISO_KAGAKU_IX(led->red, led->green, led->blue);
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buffer[1] = 0;
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buffer[2] = 0;
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buffer[3] = 0;
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buffer[4] = 0;
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retval = usb_interrupt_msg(led->udev,
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usb_sndctrlpipe(led->udev, 2),
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buffer, 5, &actlength, 1000 /*ms timeout*/);
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break;
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default:
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dev_err(&led->udev->dev, "unknown device type %d\n", led->type);
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}
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