This patch fixes build problems with recent kernel version due
to changes of the OpenFirmware device compatibility names.
Furthermore, it introduces a Kconfig option to leave the CAN
pin routing as-is (normally pre-configured by the boot-loader).
Signed-off-by: Wolfgang Grandegger <w...@grandegegr.com>
---
ksrc/drivers/can/mscan/Kconfig | 5 ++++-
ksrc/drivers/can/mscan/rtcan_mscan.c | 18 ++++++++++++++----
ksrc/drivers/can/mscan/rtcan_mscan_regs.h | 12 +++++++++---
3 files changed, 27 insertions(+), 8 deletions(-)
Index: xenomai-2.4/ksrc/drivers/can/mscan/rtcan_mscan.c
===================================================================
--- xenomai-2.4.orig/ksrc/drivers/can/mscan/rtcan_mscan.c 2009-05-25
08:25:44.478719020 +0200
+++ xenomai-2.4/ksrc/drivers/can/mscan/rtcan_mscan.c 2009-05-25
08:25:48.287395053 +0200
@@ -703,9 +703,11 @@
static inline void __init mscan_gpio_config(void)
{
struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio *)MPC5xxx_GPIO;
- int can_to_psc2 = 0;
+ int can_to_psc2 = -1;
-#ifdef CONFIG_XENO_DRIVERS_CAN_MSCAN_PSC2
+#if defined(CONFIG_XENO_DRIVERS_CAN_MSCAN_ALT)
+ can_to_psc2 = 0;
+#elif defined(CONFIG_XENO_DRIVERS_CAN_MSCAN_PSC2)
can_to_psc2 = 1;
#endif
@@ -723,6 +725,12 @@
"Please use PSC2 or I2C1/TMR01.\n", mscan_pins);
}
}
+
+ if (!gpio || can_to_psc2 < 0) {
+ printk("%s: use pre-configure CAN routing\n", RTCAN_DRV_NAME);
+ return;
+ }
+
if (can_to_psc2) {
gpio->port_config &= ~0x10000070;
gpio->port_config |= 0x00000010;
@@ -737,7 +745,7 @@
static inline int mscan_get_config(unsigned long *addr,
unsigned int *irq)
{
-#ifdef CONFIG_PPC_MERGE
+#if defined(CONFIG_PPC_MERGE) || LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27)
/* Use Open Firmware device tree */
struct device_node *np = NULL;
unsigned int i;
@@ -746,7 +754,9 @@
for (i = 0; i < RTCAN_MSCAN_DEVS; i++) {
struct resource r[2] = {};
- np = of_find_compatible_node(np, "mscan", "mpc5200-mscan");
+ np = of_find_compatible_node(np, NULL, "fsl,mpc5200-mscan");
+ if (np == NULL)
+ np = of_find_compatible_node(np, NULL, "mpc5200-mscan");
if (np == NULL)
break;
ret = of_address_to_resource(np, 0, &r[0]);
Index: xenomai-2.4/ksrc/drivers/can/mscan/rtcan_mscan_regs.h
===================================================================
--- xenomai-2.4.orig/ksrc/drivers/can/mscan/rtcan_mscan_regs.h 2009-05-25
08:25:44.478719020 +0200
+++ xenomai-2.4/ksrc/drivers/can/mscan/rtcan_mscan_regs.h 2009-05-25
08:25:48.287718842 +0200
@@ -27,17 +27,23 @@
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,20)
#include <sysdev/fsl_soc.h>
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,22)
+#include <linux/of_platform.h>
+#else
#include <asm/of_platform.h>
+#endif
#include <asm/mpc52xx.h>
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,24)
-static inline void __iomem *mpc52xx_find_and_map(const char *compatible)
+static inline void __iomem *mpc5xxx_gpio_find_and_map(void)
{
struct device_node *ofn;
- ofn = of_find_compatible_node(NULL, NULL, compatible);
+ ofn = of_find_compatible_node(NULL, NULL, "mpc5200-gpio");
+ if (!ofn)
+ ofn = of_find_compatible_node(NULL, NULL, "fsl,mpc5200-gpio");
return ofn ? of_iomap(ofn, 0) : NULL;
}
#endif
-#define MPC5xxx_GPIO mpc52xx_find_and_map("mpc5200-gpio")
+#define MPC5xxx_GPIO mpc5xxx_gpio_find_and_map()
#define mpc5xxx_gpio mpc52xx_gpio
#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
#include <asm/mpc5xxx.h>
Index: xenomai-2.4/ksrc/drivers/can/mscan/Kconfig
===================================================================
--- xenomai-2.4.orig/ksrc/drivers/can/mscan/Kconfig 2009-05-25
08:25:44.478719020 +0200
+++ xenomai-2.4/ksrc/drivers/can/mscan/Kconfig 2009-05-25 08:25:48.290720662
+0200
@@ -27,9 +27,12 @@
choice
depends on XENO_DRIVERS_CAN_MSCAN
prompt "Pin Configuration"
- default I2C1/TMR01
+ default XENO_DRIVERS_CAN_MSCAN_PRE
help
+config XENO_DRIVERS_CAN_MSCAN_PRE
+ bool "Use pre-configured CAN routing"
+
config XENO_DRIVERS_CAN_MSCAN_ALT
bool "CAN 1 on I2C1 pins, CAN 2 on TMR01 pins"
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