cdc-acm: Add support of ATOL FPrint fiscal printers

PATCH New Alexey Sokolov 1 participant 1 message Jun 2, 2015

Subsystems (2)

USB USB ACM driver

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Alexey Sokolov

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2015-06-02 08:49 UTC #0 lore raw

PATCH 1/1 cdc-acm: Add support of ATOL FPrint fiscal printers

ATOL FPrint fiscal printers require usb_clear_halt to be executed to work properly. Add quirk to fix the issue.

Signed-off-by Alexey Sokolov <[email protected]>

---
 drivers/usb/class/cdc-acm.c | 9 +++++++++
 drivers/usb/class/cdc-acm.h | 1 +
 2 files changed, 10 insertions(+)

drivers/usb/class/cdc-acm.c +9 -0

index 5c8f581..a086e1d 100644
@@ -1477,6 +1477,11 @@ skip_countries:
 		goto alloc_fail8;
 	}
 
+	if (quirks & CLEAR_HALT_CONDITIONS) {
+		usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress));
+		usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress));
+	}
+
 	return 0;
 alloc_fail8:
 	if (acm->country_codes) {

@@ -1756,6 +1761,10 @@ static const struct usb_device_id acm_ids[] = {
 	.driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
 	},
 
+	{ USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */
+	.driver_info = CLEAR_HALT_CONDITIONS,
+	},
+
 	/* Nokia S60 phones expose two ACM channels. The first is
 	 * a modem and is picked up by the standard AT-command
 	 * information below. The second is 'vendor-specific' but

drivers/usb/class/cdc-acm.h +1 -0

index ffeb3c8..b3b6c9d 100644
@@ -133,3 +133,4 @@ struct acm {
 #define NO_DATA_INTERFACE		BIT(4)
 #define IGNORE_DEVICE			BIT(5)
 #define QUIRK_CONTROL_LINE_STATE	BIT(6)
+#define CLEAR_HALT_CONDITIONS		BIT(7)

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