Merge branch 'for-davem' of git://gitorious.org/linux-can/linux-can-next

Marc Kleine-Budde says: ==================== this pull request is for net-next, for the v3.8 release cycle. Muhammad Ghias added support another board to the plx_pci sja1000 driver. Matthias Fuchs improved the esd_usb2 driver with listen-only mode and CAN-USB/Micro support. Andreas Larsson contributed a driver for the GRHCAN CAN IP-Core ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-15 17:50:24 -05:00 · 2012-11-15 17:50:24 -05:00 · 7213dde6c9
parent 4223dbffed 6cec9b07fe
commit 7213dde6c9
10 changed files with 1898 additions and 8 deletions
--- a/Documentation/ABI/testing/sysfs-class-net-grcan
+++ b/Documentation/ABI/testing/sysfs-class-net-grcan
@ -0,0 +1,35 @@
+
+What:		/sys/class/net/<iface>/grcan/enable0
+Date:		October 2012
+KernelVersion:	3.8
+Contact:	Andreas Larsson <andreas@gaisler.com>
+Description:
+		Hardware configuration of physical interface 0. This file reads
+		and writes the "Enable 0" bit of the configuration register.
+		Possible values: 0 or 1. See the GRCAN chapter of the GRLIB IP
+		core library documentation for details. The default value is 0
+		or set by the module parameter grcan.enable0 and can be read at
+		/sys/module/grcan/parameters/enable0.
+
+What:		/sys/class/net/<iface>/grcan/enable1
+Date:		October 2012
+KernelVersion:	3.8
+Contact:	Andreas Larsson <andreas@gaisler.com>
+Description:
+		Hardware configuration of physical interface 1. This file reads
+		and writes the "Enable 1" bit of the configuration register.
+		Possible values: 0 or 1. See the GRCAN chapter of the GRLIB IP
+		core library documentation for details. The default value is 0
+		or set by the module parameter grcan.enable1 and can be read at
+		/sys/module/grcan/parameters/enable1.
+
+What:		/sys/class/net/<iface>/grcan/select
+Date:		October 2012
+KernelVersion:	3.8
+Contact:	Andreas Larsson <andreas@gaisler.com>
+Description:
+		Configuration of which physical interface to be used. Possible
+		values: 0 or 1. See the GRCAN chapter of the GRLIB IP core
+		library documentation for details. The default value is 0 or is
+		set by the module parameter grcan.select and can be read at
+		/sys/module/grcan/parameters/select.
--- a/Documentation/devicetree/bindings/net/can/grcan.txt
+++ b/Documentation/devicetree/bindings/net/can/grcan.txt
@ -0,0 +1,28 @@
+Aeroflex Gaisler GRCAN and GRHCAN CAN controllers.
+
+The GRCAN and CRHCAN CAN controllers are available in the GRLIB VHDL IP core
+library.
+
+Note: These properties are built from the AMBA plug&play in a Leon SPARC system
+(the ordinary environment for GRCAN and GRHCAN). There are no dts files for
+sparc.
+
+Required properties:
+
+- name : Should be "GAISLER_GRCAN", "01_03d", "GAISLER_GRHCAN" or "01_034"
+
+- reg : Address and length of the register set for the device
+
+- freq : Frequency of the external oscillator clock in Hz (the frequency of
+	the amba bus in the ordinary case)
+
+- interrupts : Interrupt number for this device
+
+Optional properties:
+
+- systemid : If not present or if the value of the least significant 16 bits
+	of this 32-bit property is smaller than GRCAN_TXBUG_SAFE_GRLIB_VERSION
+	a bug workaround is activated.
+
+For further information look in the documentation for the GLIB IP core library:
+http://www.gaisler.com/products/grlib/grip.pdf
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@ -905,6 +905,24 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 	gpt		[EFI] Forces disk with valid GPT signature but
 			invalid Protective MBR to be treated as GPT.

+	grcan.enable0=	[HW] Configuration of physical interface 0. Determines
+			the "Enable 0" bit of the configuration register.
+			Format: 0 | 1
+			Default: 0
+	grcan.enable1=	[HW] Configuration of physical interface 1. Determines
+			the "Enable 0" bit of the configuration register.
+			Format: 0 | 1
+			Default: 0
+	grcan.select=	[HW] Select which physical interface to use.
+			Format: 0 | 1
+			Default: 0
+	grcan.txsize=	[HW] Sets the size of the tx buffer.
+			Format: <unsigned int> such that (txsize & ~0x1fffc0) == 0.
+			Default: 1024
+	grcan.rxsize=	[HW] Sets the size of the rx buffer.
+			Format: <unsigned int> such that (rxsize & ~0x1fffc0) == 0.
+			Default: 1024
+
 	hashdist=	[KNL,NUMA] Large hashes allocated during boot
 			are distributed across NUMA nodes.  Defaults on
 			for 64-bit NUMA, off otherwise.
--- a/drivers/net/can/Kconfig
+++ b/drivers/net/can/Kconfig
@ -110,6 +110,15 @@ config PCH_CAN
 	  is an IOH for x86 embedded processor (Intel Atom E6xx series).
 	  This driver can access CAN bus.

+config CAN_GRCAN
+	tristate "Aeroflex Gaisler GRCAN and GRHCAN CAN devices"
+	depends on CAN_DEV && OF
+	---help---
+	  Say Y here if you want to use Aeroflex Gaisler GRCAN or GRHCAN.
+	  Note that the driver supports little endian, even though little
+	  endian syntheses of the cores would need some modifications on
+	  the hardware level to work.
+
 source "drivers/net/can/mscan/Kconfig"

 source "drivers/net/can/sja1000/Kconfig"
--- a/drivers/net/can/Makefile
+++ b/drivers/net/can/Makefile
@ -22,5 +22,6 @@ obj-$(CONFIG_CAN_BFIN)		+= bfin_can.o
 obj-$(CONFIG_CAN_JANZ_ICAN3)	+= janz-ican3.o
 obj-$(CONFIG_CAN_FLEXCAN)	+= flexcan.o
 obj-$(CONFIG_PCH_CAN)		+= pch_can.o
+obj-$(CONFIG_CAN_GRCAN)		+= grcan.o

 ccflags-$(CONFIG_CAN_DEBUG_DEVICES) := -DDEBUG
--- a/drivers/net/can/grcan.c
+++ b/drivers/net/can/grcan.c
--- a/drivers/net/can/janz-ican3.c
+++ b/drivers/net/can/janz-ican3.c
@ -1692,7 +1692,7 @@ static int ican3_get_berr_counter(const struct net_device *ndev,
 		return ret;

 	ret = wait_for_completion_timeout(&mod->buserror_comp, HZ);
-	if (ret <= 0) {
+	if (ret == 0) {
 		dev_info(mod->dev, "%s timed out\n", __func__);
 		return -ETIMEDOUT;
 	}
@ -1718,7 +1718,7 @@ static ssize_t ican3_sysfs_show_term(struct device *dev,
 		return ret;

 	ret = wait_for_completion_timeout(&mod->termination_comp, HZ);
-	if (ret <= 0) {
+	if (ret == 0) {
 		dev_info(mod->dev, "%s timed out\n", __func__);
 		return -ETIMEDOUT;
 	}
--- a/drivers/net/can/sja1000/Kconfig
+++ b/drivers/net/can/sja1000/Kconfig
@ -93,6 +93,7 @@ config CAN_PLX_PCI
 	   - Marathon CAN-bus-PCI card (http://www.marathon.ru/)
 	   - TEWS TECHNOLOGIES TPMC810 card (http://www.tews.com/)
 	   - IXXAT Automation PC-I 04/PCI card (http://www.ixxat.com/)
+	   - Connect Tech Inc. CANpro/104-Plus Opto (CRG001) card (http://www.connecttech.com)

 config CAN_TSCAN1
 	tristate "TS-CAN1 PC104 boards"
--- a/drivers/net/can/sja1000/plx_pci.c
+++ b/drivers/net/can/sja1000/plx_pci.c
@ -44,6 +44,7 @@ MODULE_SUPPORTED_DEVICE("Adlink PCI-7841/cPCI-7841, "
 			"esd CAN-PCI/CPCI/PCI104/200, "
 			"esd CAN-PCI/PMC/266, "
 			"esd CAN-PCIe/2000, "
+			"Connect Tech Inc. CANpro/104-Plus Opto (CRG001), "
 			"IXXAT PC-I 04/PCI")
 MODULE_LICENSE("GPL v2");

@ -131,6 +132,9 @@ struct plx_pci_card {
 #define TEWS_PCI_VENDOR_ID		0x1498
 #define TEWS_PCI_DEVICE_ID_TMPC810	0x032A

+#define CTI_PCI_VENDOR_ID		0x12c4
+#define CTI_PCI_DEVICE_ID_CRG001	0x0900
+
 static void plx_pci_reset_common(struct pci_dev *pdev);
 static void plx_pci_reset_marathon(struct pci_dev *pdev);
 static void plx9056_pci_reset_common(struct pci_dev *pdev);
@ -222,6 +226,14 @@ static struct plx_pci_card_info plx_pci_card_info_tews __devinitdata = {
 	/* based on PLX9030 */
 };

+static struct plx_pci_card_info plx_pci_card_info_cti __devinitdata = {
+	"Connect Tech Inc. CANpro/104-Plus Opto (CRG001)", 2,
+	PLX_PCI_CAN_CLOCK, PLX_PCI_OCR, PLX_PCI_CDR,
+	{0, 0x00, 0x00}, { {2, 0x000, 0x80}, {2, 0x100, 0x80} },
+	&plx_pci_reset_common
+	/* based on PLX9030 */
+};
+
 static DEFINE_PCI_DEVICE_TABLE(plx_pci_tbl) = {
 	{
 		/* Adlink PCI-7841/cPCI-7841 */
@ -300,6 +312,13 @@ static DEFINE_PCI_DEVICE_TABLE(plx_pci_tbl) = {
 		0, 0,
 		(kernel_ulong_t)&plx_pci_card_info_tews
 	},
+	{
+		/* Connect Tech Inc. CANpro/104-Plus Opto (CRG001) card */
+		PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9030,
+		CTI_PCI_VENDOR_ID, CTI_PCI_DEVICE_ID_CRG001,
+		0, 0,
+		(kernel_ulong_t)&plx_pci_card_info_cti
+	},
 	{ 0,}
 };
 MODULE_DEVICE_TABLE(pci, plx_pci_tbl);
--- a/drivers/net/can/usb/esd_usb2.c
+++ b/drivers/net/can/usb/esd_usb2.c
@ -1,7 +1,7 @@
 /*
- * CAN driver for esd CAN-USB/2
+ * CAN driver for esd CAN-USB/2 and CAN-USB/Micro
 *
- * Copyright (C) 2010 Matthias Fuchs <matthias.fuchs@esd.eu>, esd gmbh
+ * Copyright (C) 2010-2012 Matthias Fuchs <matthias.fuchs@esd.eu>, esd gmbh
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published
@ -28,14 +28,16 @@
 #include <linux/can/error.h>

 MODULE_AUTHOR("Matthias Fuchs <matthias.fuchs@esd.eu>");
-MODULE_DESCRIPTION("CAN driver for esd CAN-USB/2 interfaces");
+MODULE_DESCRIPTION("CAN driver for esd CAN-USB/2 and CAN-USB/Micro interfaces");
 MODULE_LICENSE("GPL v2");

 /* Define these values to match your devices */
 #define USB_ESDGMBH_VENDOR_ID	0x0ab4
 #define USB_CANUSB2_PRODUCT_ID	0x0010
+#define USB_CANUSBM_PRODUCT_ID	0x0011

 #define ESD_USB2_CAN_CLOCK	60000000
+#define ESD_USBM_CAN_CLOCK	36000000
 #define ESD_USB2_MAX_NETS	2

 /* USB2 commands */
@ -69,6 +71,7 @@ MODULE_LICENSE("GPL v2");
 #define ESD_USB2_TSEG2_SHIFT	20
 #define ESD_USB2_SJW_MAX	4
 #define ESD_USB2_SJW_SHIFT	14
+#define ESD_USBM_SJW_SHIFT	24
 #define ESD_USB2_BRP_MIN	1
 #define ESD_USB2_BRP_MAX	1024
 #define ESD_USB2_BRP_INC	1
@ -183,6 +186,7 @@ struct __attribute__ ((packed)) esd_usb2_msg {

 static struct usb_device_id esd_usb2_table[] = {
 	{USB_DEVICE(USB_ESDGMBH_VENDOR_ID, USB_CANUSB2_PRODUCT_ID)},
+	{USB_DEVICE(USB_ESDGMBH_VENDOR_ID, USB_CANUSBM_PRODUCT_ID)},
 	{}
 };
 MODULE_DEVICE_TABLE(usb, esd_usb2_table);
@ -889,11 +893,22 @@ static int esd_usb2_set_bittiming(struct net_device *netdev)
 	struct can_bittiming *bt = &priv->can.bittiming;
 	struct esd_usb2_msg msg;
 	u32 canbtr;
+	int sjw_shift;

 	canbtr = ESD_USB2_UBR;
+	if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
+		canbtr |= ESD_USB2_LOM;
+
 	canbtr |= (bt->brp - 1) & (ESD_USB2_BRP_MAX - 1);
+
+	if (le16_to_cpu(priv->usb2->udev->descriptor.idProduct) ==
+	    USB_CANUSBM_PRODUCT_ID)
+		sjw_shift = ESD_USBM_SJW_SHIFT;
+	else
+		sjw_shift = ESD_USB2_SJW_SHIFT;
+
 	canbtr |= ((bt->sjw - 1) & (ESD_USB2_SJW_MAX - 1))
-		<< ESD_USB2_SJW_SHIFT;
+		<< sjw_shift;
 	canbtr |= ((bt->prop_seg + bt->phase_seg1 - 1)
 		   & (ESD_USB2_TSEG1_MAX - 1))
 		<< ESD_USB2_TSEG1_SHIFT;
@ -971,12 +986,20 @@ static int esd_usb2_probe_one_net(struct usb_interface *intf, int index)
 	priv->index = index;

 	priv->can.state = CAN_STATE_STOPPED;
-	priv->can.clock.freq = ESD_USB2_CAN_CLOCK;
+	priv->can.ctrlmode_supported = CAN_CTRLMODE_LISTENONLY;
+
+	if (le16_to_cpu(dev->udev->descriptor.idProduct) ==
+	    USB_CANUSBM_PRODUCT_ID)
+		priv->can.clock.freq = ESD_USBM_CAN_CLOCK;
+	else {
+		priv->can.clock.freq = ESD_USB2_CAN_CLOCK;
+		priv->can.ctrlmode_supported |= CAN_CTRLMODE_3_SAMPLES;
+	}
+
 	priv->can.bittiming_const = &esd_usb2_bittiming_const;
 	priv->can.do_set_bittiming = esd_usb2_set_bittiming;
 	priv->can.do_set_mode = esd_usb2_set_mode;
 	priv->can.do_get_berr_counter = esd_usb2_get_berr_counter;
-	priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES;

 	netdev->flags |= IFF_ECHO; /* we support local echo */