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-rw-r--r--drivers/net/can/mscan/Kconfig7
-rw-r--r--drivers/net/can/mscan/mpc5xxx_can.c246
-rw-r--r--drivers/net/can/mscan/mscan.c51
-rw-r--r--drivers/net/can/mscan/mscan.h86
4 files changed, 295 insertions, 95 deletions
diff --git a/drivers/net/can/mscan/Kconfig b/drivers/net/can/mscan/Kconfig
index cd0f2d6..27d1d39 100644
--- a/drivers/net/can/mscan/Kconfig
+++ b/drivers/net/can/mscan/Kconfig
@@ -11,12 +11,13 @@ if CAN_MSCAN
config CAN_MPC5XXX
tristate "Freescale MPC5xxx onboard CAN controller"
- depends on PPC_MPC52xx
+ depends on (PPC_MPC52xx || PPC_MPC512x)
---help---
If you say yes here you get support for Freescale's MPC5xxx
- onboard CAN controller.
+ onboard CAN controller. Currently, the MPC5200, MPC5200B and
+ MPC5121 (Rev. 2 and later) are supported.
- This driver can also be built as a module. If so, the module
+ This driver can also be built as a module. If so, the module
will be called mscan-mpc5xxx.ko.
endif
diff --git a/drivers/net/can/mscan/mpc5xxx_can.c b/drivers/net/can/mscan/mpc5xxx_can.c
index 1de6f63..f73487f 100644
--- a/drivers/net/can/mscan/mpc5xxx_can.c
+++ b/drivers/net/can/mscan/mpc5xxx_can.c
@@ -29,6 +29,7 @@
#include <linux/can/dev.h>
#include <linux/of_platform.h>
#include <sysdev/fsl_soc.h>
+#include <linux/clk.h>
#include <linux/io.h>
#include <asm/mpc52xx.h>
@@ -36,22 +37,21 @@
#define DRV_NAME "mpc5xxx_can"
-static struct of_device_id mpc52xx_cdm_ids[] __devinitdata = {
+struct mpc5xxx_can_data {
+ unsigned int type;
+ u32 (*get_clock)(struct of_device *ofdev, const char *clock_name,
+ int *mscan_clksrc);
+};
+
+#ifdef CONFIG_PPC_MPC5200
+static struct of_device_id __devinitdata mpc52xx_cdm_ids[] = {
{ .compatible = "fsl,mpc5200-cdm", },
{}
};
-/*
- * Get frequency of the MSCAN clock source
- *
- * Either the oscillator clock (SYS_XTAL_IN) or the IP bus clock (IP_CLK)
- * can be selected. According to the MPC5200 user's manual, the oscillator
- * clock is the better choice as it has less jitter but due to a hardware
- * bug, it can not be selected for the old MPC5200 Rev. A chips.
- */
-
-static unsigned int __devinit mpc52xx_can_clock_freq(struct of_device *of,
- int clock_src)
+static u32 __devinit mpc52xx_can_get_clock(struct of_device *ofdev,
+ const char *clock_name,
+ int *mscan_clksrc)
{
unsigned int pvr;
struct mpc52xx_cdm __iomem *cdm;
@@ -61,11 +61,24 @@ static unsigned int __devinit mpc52xx_can_clock_freq(struct of_device *of,
pvr = mfspr(SPRN_PVR);
- freq = mpc5xxx_get_bus_frequency(of->node);
+ /*
+ * Either the oscillator clock (SYS_XTAL_IN) or the IP bus clock
+ * (IP_CLK) can be selected as MSCAN clock source. According to
+ * the MPC5200 user's manual, the oscillator clock is the better
+ * choice as it has less jitter. For this reason, it is selected
+ * by default. Unfortunately, it can not be selected for the old
+ * MPC5200 Rev. A chips due to a hardware bug (check errata).
+ */
+ if (clock_name && strcmp(clock_name, "ip") == 0)
+ *mscan_clksrc = MSCAN_CLKSRC_BUS;
+ else
+ *mscan_clksrc = MSCAN_CLKSRC_XTAL;
+
+ freq = mpc5xxx_get_bus_frequency(ofdev->node);
if (!freq)
return 0;
- if (clock_src == MSCAN_CLKSRC_BUS || pvr == 0x80822011)
+ if (*mscan_clksrc == MSCAN_CLKSRC_BUS || pvr == 0x80822011)
return freq;
/* Determine SYS_XTAL_IN frequency from the clock domain settings */
@@ -75,7 +88,6 @@ static unsigned int __devinit mpc52xx_can_clock_freq(struct of_device *of,
return 0;
}
cdm = of_iomap(np_cdm, 0);
- of_node_put(np_cdm);
if (in_8(&cdm->ipb_clk_sel) & 0x1)
freq *= 2;
@@ -84,26 +96,174 @@ static unsigned int __devinit mpc52xx_can_clock_freq(struct of_device *of,
freq *= (val & (1 << 5)) ? 8 : 4;
freq /= (val & (1 << 6)) ? 12 : 16;
+ of_node_put(np_cdm);
iounmap(cdm);
return freq;
}
+#else /* !CONFIG_PPC_MPC5200 */
+static u32 __devinit mpc52xx_can_get_clock(struct of_device *ofdev,
+ const char *clock_name,
+ int *mscan_clksrc)
+{
+ return 0;
+}
+#endif /* CONFIG_PPC_MPC5200 */
+
+#ifdef CONFIG_PPC_MPC512x
+struct mpc512x_clockctl {
+ u32 spmr; /* System PLL Mode Reg */
+ u32 sccr[2]; /* System Clk Ctrl Reg 1 & 2 */
+ u32 scfr1; /* System Clk Freq Reg 1 */
+ u32 scfr2; /* System Clk Freq Reg 2 */
+ u32 reserved;
+ u32 bcr; /* Bread Crumb Reg */
+ u32 pccr[12]; /* PSC Clk Ctrl Reg 0-11 */
+ u32 spccr; /* SPDIF Clk Ctrl Reg */
+ u32 cccr; /* CFM Clk Ctrl Reg */
+ u32 dccr; /* DIU Clk Cnfg Reg */
+ u32 mccr[4]; /* MSCAN Clk Ctrl Reg 1-3 */
+};
+
+static struct of_device_id __devinitdata mpc512x_clock_ids[] = {
+ { .compatible = "fsl,mpc5121-clock", },
+ {}
+};
+
+static u32 __devinit mpc512x_can_get_clock(struct of_device *ofdev,
+ const char *clock_name,
+ int *mscan_clksrc)
+{
+ struct mpc512x_clockctl __iomem *clockctl;
+ struct device_node *np_clock;
+ struct clk *sys_clk, *ref_clk;
+ int plen, clockidx, clocksrc = -1;
+ u32 sys_freq, val, clockdiv = 1, freq = 0;
+ const u32 *pval;
+
+ np_clock = of_find_matching_node(NULL, mpc512x_clock_ids);
+ if (!np_clock) {
+ dev_err(&ofdev->dev, "couldn't find clock node\n");
+ return -ENODEV;
+ }
+ clockctl = of_iomap(np_clock, 0);
+ if (!clockctl) {
+ dev_err(&ofdev->dev, "couldn't map clock registers\n");
+ return 0;
+ }
+
+ /* Determine the MSCAN device index from the physical address */
+ pval = of_get_property(ofdev->node, "reg", &plen);
+ BUG_ON(!pval || plen < sizeof(*pval));
+ clockidx = (*pval & 0x80) ? 1 : 0;
+ if (*pval & 0x2000)
+ clockidx += 2;
+
+ /*
+ * Clock source and divider selection: 3 different clock sources
+ * can be selected: "ip", "ref" or "sys". For the latter two, a
+ * clock divider can be defined as well. If the clock source is
+ * not specified by the device tree, we first try to find an
+ * optimal CAN source clock based on the system clock. If that
+ * is not posslible, the reference clock will be used.
+ */
+ if (clock_name && !strcmp(clock_name, "ip")) {
+ *mscan_clksrc = MSCAN_CLKSRC_IPS;
+ freq = mpc5xxx_get_bus_frequency(ofdev->node);
+ } else {
+ *mscan_clksrc = MSCAN_CLKSRC_BUS;
+
+ pval = of_get_property(ofdev->node,
+ "fsl,mscan-clock-divider", &plen);
+ if (pval && plen == sizeof(*pval))
+ clockdiv = *pval;
+ if (!clockdiv)
+ clockdiv = 1;
+
+ if (!clock_name || !strcmp(clock_name, "sys")) {
+ sys_clk = clk_get(&ofdev->dev, "sys_clk");
+ if (!sys_clk) {
+ dev_err(&ofdev->dev, "couldn't get sys_clk\n");
+ goto exit_unmap;
+ }
+ /* Get and round up/down sys clock rate */
+ sys_freq = 1000000 *
+ ((clk_get_rate(sys_clk) + 499999) / 1000000);
+
+ if (!clock_name) {
+ /* A multiple of 16 MHz would be optimal */
+ if ((sys_freq % 16000000) == 0) {
+ clocksrc = 0;
+ clockdiv = sys_freq / 16000000;
+ freq = sys_freq / clockdiv;
+ }
+ } else {
+ clocksrc = 0;
+ freq = sys_freq / clockdiv;
+ }
+ }
+
+ if (clocksrc < 0) {
+ ref_clk = clk_get(&ofdev->dev, "ref_clk");
+ if (!ref_clk) {
+ dev_err(&ofdev->dev, "couldn't get ref_clk\n");
+ goto exit_unmap;
+ }
+ clocksrc = 1;
+ freq = clk_get_rate(ref_clk) / clockdiv;
+ }
+ }
+
+ /* Disable clock */
+ out_be32(&clockctl->mccr[clockidx], 0x0);
+ if (clocksrc >= 0) {
+ /* Set source and divider */
+ val = (clocksrc << 14) | ((clockdiv - 1) << 17);
+ out_be32(&clockctl->mccr[clockidx], val);
+ /* Enable clock */
+ out_be32(&clockctl->mccr[clockidx], val | 0x10000);
+ }
+
+ /* Enable MSCAN clock domain */
+ val = in_be32(&clockctl->sccr[1]);
+ if (!(val & (1 << 25)))
+ out_be32(&clockctl->sccr[1], val | (1 << 25));
+
+ dev_dbg(&ofdev->dev, "using '%s' with frequency divider %d\n",
+ *mscan_clksrc == MSCAN_CLKSRC_IPS ? "ips_clk" :
+ clocksrc == 1 ? "ref_clk" : "sys_clk", clockdiv);
+
+exit_unmap:
+ of_node_put(np_clock);
+ iounmap(clockctl);
+
+ return freq;
+}
+#else /* !CONFIG_PPC_MPC512x */
+static u32 __devinit mpc512x_can_get_clock(struct of_device *ofdev,
+ const char *clock_name,
+ int *mscan_clksrc)
+{
+ return 0;
+}
+#endif /* CONFIG_PPC_MPC512x */
static int __devinit mpc5xxx_can_probe(struct of_device *ofdev,
const struct of_device_id *id)
{
+ struct mpc5xxx_can_data *data = (struct mpc5xxx_can_data *)id->data;
struct device_node *np = ofdev->node;
struct net_device *dev;
struct mscan_priv *priv;
void __iomem *base;
- const char *clk_src;
- int err, irq, clock_src;
+ const char *clock_name = NULL;
+ int irq, mscan_clksrc = 0;
+ int err = -ENOMEM;
- base = of_iomap(ofdev->node, 0);
+ base = of_iomap(np, 0);
if (!base) {
dev_err(&ofdev->dev, "couldn't ioremap\n");
- err = -ENOMEM;
- goto exit_release_mem;
+ return err;
}
irq = irq_of_parse_and_map(np, 0);
@@ -114,37 +274,27 @@ static int __devinit mpc5xxx_can_probe(struct of_device *ofdev,
}
dev = alloc_mscandev();
- if (!dev) {
- err = -ENOMEM;
+ if (!dev)
goto exit_dispose_irq;
- }
priv = netdev_priv(dev);
priv->reg_base = base;
dev->irq = irq;
- /*
- * Either the oscillator clock (SYS_XTAL_IN) or the IP bus clock
- * (IP_CLK) can be selected as MSCAN clock source. According to
- * the MPC5200 user's manual, the oscillator clock is the better
- * choice as it has less jitter. For this reason, it is selected
- * by default.
- */
- clk_src = of_get_property(np, "fsl,mscan-clock-source", NULL);
- if (clk_src && strcmp(clk_src, "ip") == 0)
- clock_src = MSCAN_CLKSRC_BUS;
- else
- clock_src = MSCAN_CLKSRC_XTAL;
- priv->can.clock.freq = mpc52xx_can_clock_freq(ofdev, clock_src);
+ clock_name = of_get_property(np, "fsl,mscan-clock-source", NULL);
+
+ BUG_ON(!data);
+ priv->type = data->type;
+ priv->can.clock.freq = data->get_clock(ofdev, clock_name,
+ &mscan_clksrc);
if (!priv->can.clock.freq) {
- dev_err(&ofdev->dev, "couldn't get MSCAN clock frequency\n");
- err = -ENODEV;
+ dev_err(&ofdev->dev, "couldn't get MSCAN clock properties\n");
goto exit_free_mscan;
}
SET_NETDEV_DEV(dev, &ofdev->dev);
- err = register_mscandev(dev, clock_src);
+ err = register_mscandev(dev, mscan_clksrc);
if (err) {
dev_err(&ofdev->dev, "registering %s failed (err=%d)\n",
DRV_NAME, err);
@@ -164,7 +314,7 @@ exit_dispose_irq:
irq_dispose_mapping(irq);
exit_unmap_mem:
iounmap(base);
-exit_release_mem:
+
return err;
}
@@ -225,8 +375,20 @@ static int mpc5xxx_can_resume(struct of_device *ofdev)
}
#endif
+static struct mpc5xxx_can_data __devinitdata mpc5200_can_data = {
+ .type = MSCAN_TYPE_MPC5200,
+ .get_clock = mpc52xx_can_get_clock,
+};
+
+static struct mpc5xxx_can_data __devinitdata mpc5121_can_data = {
+ .type = MSCAN_TYPE_MPC5121,
+ .get_clock = mpc512x_can_get_clock,
+};
+
static struct of_device_id __devinitdata mpc5xxx_can_table[] = {
- {.compatible = "fsl,mpc5200-mscan"},
+ { .compatible = "fsl,mpc5200-mscan", .data = &mpc5200_can_data, },
+ /* Note that only MPC5121 Rev. 2 (and later) is supported */
+ { .compatible = "fsl,mpc5121-mscan", .data = &mpc5121_can_data, },
{},
};
@@ -255,5 +417,5 @@ static void __exit mpc5xxx_can_exit(void)
module_exit(mpc5xxx_can_exit);
MODULE_AUTHOR("Wolfgang Grandegger <wg@grandegger.com>");
-MODULE_DESCRIPTION("Freescale MPC5200 CAN driver");
+MODULE_DESCRIPTION("Freescale MPC5xxx CAN driver");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/net/can/mscan/mscan.c b/drivers/net/can/mscan/mscan.c
index 0dcbe8c..500d189 100644
--- a/drivers/net/can/mscan/mscan.c
+++ b/drivers/net/can/mscan/mscan.c
@@ -152,6 +152,12 @@ static int mscan_start(struct net_device *dev)
priv->shadow_canrier = 0;
priv->flags = 0;
+ if (priv->type == MSCAN_TYPE_MPC5121) {
+ /* Clear pending bus-off condition */
+ if (in_8(&regs->canmisc) & MSCAN_BOHOLD)
+ out_8(&regs->canmisc, MSCAN_BOHOLD);
+ }
+
err = mscan_set_mode(dev, MSCAN_NORMAL_MODE);
if (err)
return err;
@@ -163,8 +169,29 @@ static int mscan_start(struct net_device *dev)
out_8(&regs->cantier, 0);
/* Enable receive interrupts. */
- out_8(&regs->canrier, MSCAN_OVRIE | MSCAN_RXFIE | MSCAN_CSCIE |
- MSCAN_RSTATE1 | MSCAN_RSTATE0 | MSCAN_TSTATE1 | MSCAN_TSTATE0);
+ out_8(&regs->canrier, MSCAN_RX_INTS_ENABLE);
+
+ return 0;
+}
+
+static int mscan_restart(struct net_device *dev)
+{
+ struct mscan_priv *priv = netdev_priv(dev);
+
+ if (priv->type == MSCAN_TYPE_MPC5121) {
+ struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+
+ priv->can.state = CAN_STATE_ERROR_ACTIVE;
+ WARN(!(in_8(&regs->canmisc) & MSCAN_BOHOLD),
+ "bus-off state expected");
+ out_8(&regs->canmisc, MSCAN_BOHOLD);
+ /* Re-enable receive interrupts. */
+ out_8(&regs->canrier, MSCAN_RX_INTS_ENABLE);
+ } else {
+ if (priv->can.state <= CAN_STATE_BUS_OFF)
+ mscan_set_mode(dev, MSCAN_INIT_MODE);
+ return mscan_start(dev);
+ }
return 0;
}
@@ -362,9 +389,12 @@ static void mscan_get_err_frame(struct net_device *dev, struct can_frame *frame,
* automatically. To avoid that we stop the chip doing
* a light-weight stop (we are in irq-context).
*/
- out_8(&regs->cantier, 0);
- out_8(&regs->canrier, 0);
- setbits8(&regs->canctl0, MSCAN_SLPRQ | MSCAN_INITRQ);
+ if (priv->type != MSCAN_TYPE_MPC5121) {
+ out_8(&regs->cantier, 0);
+ out_8(&regs->canrier, 0);
+ setbits8(&regs->canctl0,
+ MSCAN_SLPRQ | MSCAN_INITRQ);
+ }
can_bus_off(dev);
break;
default:
@@ -494,9 +524,7 @@ static int mscan_do_set_mode(struct net_device *dev, enum can_mode mode)
switch (mode) {
case CAN_MODE_START:
- if (priv->can.state <= CAN_STATE_BUS_OFF)
- mscan_set_mode(dev, MSCAN_INIT_MODE);
- ret = mscan_start(dev);
+ ret = mscan_restart(dev);
if (ret)
break;
if (netif_queue_stopped(dev))
@@ -595,18 +623,21 @@ static const struct net_device_ops mscan_netdev_ops = {
.ndo_start_xmit = mscan_start_xmit,
};
-int register_mscandev(struct net_device *dev, int clock_src)
+int register_mscandev(struct net_device *dev, int mscan_clksrc)
{
struct mscan_priv *priv = netdev_priv(dev);
struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
u8 ctl1;
ctl1 = in_8(&regs->canctl1);
- if (clock_src)
+ if (mscan_clksrc)
ctl1 |= MSCAN_CLKSRC;
else
ctl1 &= ~MSCAN_CLKSRC;
+ if (priv->type == MSCAN_TYPE_MPC5121)
+ ctl1 |= MSCAN_BORM; /* bus-off recovery upon request */
+
ctl1 |= MSCAN_CANE;
out_8(&regs->canctl1, ctl1);
udelay(100);
diff --git a/drivers/net/can/mscan/mscan.h b/drivers/net/can/mscan/mscan.h
index 00fc4aa..4ff9664 100644
--- a/drivers/net/can/mscan/mscan.h
+++ b/drivers/net/can/mscan/mscan.h
@@ -38,18 +38,20 @@
#define MSCAN_CLKSRC 0x40
#define MSCAN_LOOPB 0x20
#define MSCAN_LISTEN 0x10
+#define MSCAN_BORM 0x08
#define MSCAN_WUPM 0x04
#define MSCAN_SLPAK 0x02
#define MSCAN_INITAK 0x01
-/* Use the MPC5200 MSCAN variant? */
+/* Use the MPC5XXX MSCAN variant? */
#ifdef CONFIG_PPC
-#define MSCAN_FOR_MPC5200
+#define MSCAN_FOR_MPC5XXX
#endif
-#ifdef MSCAN_FOR_MPC5200
+#ifdef MSCAN_FOR_MPC5XXX
#define MSCAN_CLKSRC_BUS 0
#define MSCAN_CLKSRC_XTAL MSCAN_CLKSRC
+#define MSCAN_CLKSRC_IPS MSCAN_CLKSRC
#else
#define MSCAN_CLKSRC_BUS MSCAN_CLKSRC
#define MSCAN_CLKSRC_XTAL 0
@@ -136,7 +138,7 @@
#define MSCAN_EFF_RTR_SHIFT 0
#define MSCAN_EFF_FLAGS 0x18 /* IDE + SRR */
-#ifdef MSCAN_FOR_MPC5200
+#ifdef MSCAN_FOR_MPC5XXX
#define _MSCAN_RESERVED_(n, num) u8 _res##n[num]
#define _MSCAN_RESERVED_DSR_SIZE 2
#else
@@ -165,67 +167,66 @@ struct mscan_regs {
u8 cantbsel; /* + 0x14 0x0a */
u8 canidac; /* + 0x15 0x0b */
u8 reserved; /* + 0x16 0x0c */
- _MSCAN_RESERVED_(6, 5); /* + 0x17 */
-#ifndef MSCAN_FOR_MPC5200
- u8 canmisc; /* 0x0d */
-#endif
+ _MSCAN_RESERVED_(6, 2); /* + 0x17 */
+ u8 canmisc; /* + 0x19 0x0d */
+ _MSCAN_RESERVED_(7, 2); /* + 0x1a */
u8 canrxerr; /* + 0x1c 0x0e */
u8 cantxerr; /* + 0x1d 0x0f */
- _MSCAN_RESERVED_(7, 2); /* + 0x1e */
+ _MSCAN_RESERVED_(8, 2); /* + 0x1e */
u16 canidar1_0; /* + 0x20 0x10 */
- _MSCAN_RESERVED_(8, 2); /* + 0x22 */
+ _MSCAN_RESERVED_(9, 2); /* + 0x22 */
u16 canidar3_2; /* + 0x24 0x12 */
- _MSCAN_RESERVED_(9, 2); /* + 0x26 */
+ _MSCAN_RESERVED_(10, 2); /* + 0x26 */
u16 canidmr1_0; /* + 0x28 0x14 */
- _MSCAN_RESERVED_(10, 2); /* + 0x2a */
+ _MSCAN_RESERVED_(11, 2); /* + 0x2a */
u16 canidmr3_2; /* + 0x2c 0x16 */
- _MSCAN_RESERVED_(11, 2); /* + 0x2e */
+ _MSCAN_RESERVED_(12, 2); /* + 0x2e */
u16 canidar5_4; /* + 0x30 0x18 */
- _MSCAN_RESERVED_(12, 2); /* + 0x32 */
+ _MSCAN_RESERVED_(13, 2); /* + 0x32 */
u16 canidar7_6; /* + 0x34 0x1a */
- _MSCAN_RESERVED_(13, 2); /* + 0x36 */
+ _MSCAN_RESERVED_(14, 2); /* + 0x36 */
u16 canidmr5_4; /* + 0x38 0x1c */
- _MSCAN_RESERVED_(14, 2); /* + 0x3a */
+ _MSCAN_RESERVED_(15, 2); /* + 0x3a */
u16 canidmr7_6; /* + 0x3c 0x1e */
- _MSCAN_RESERVED_(15, 2); /* + 0x3e */
+ _MSCAN_RESERVED_(16, 2); /* + 0x3e */
struct {
u16 idr1_0; /* + 0x40 0x20 */
- _MSCAN_RESERVED_(16, 2); /* + 0x42 */
+ _MSCAN_RESERVED_(17, 2); /* + 0x42 */
u16 idr3_2; /* + 0x44 0x22 */
- _MSCAN_RESERVED_(17, 2); /* + 0x46 */
+ _MSCAN_RESERVED_(18, 2); /* + 0x46 */
u16 dsr1_0; /* + 0x48 0x24 */
- _MSCAN_RESERVED_(18, 2); /* + 0x4a */
+ _MSCAN_RESERVED_(19, 2); /* + 0x4a */
u16 dsr3_2; /* + 0x4c 0x26 */
- _MSCAN_RESERVED_(19, 2); /* + 0x4e */
+ _MSCAN_RESERVED_(20, 2); /* + 0x4e */
u16 dsr5_4; /* + 0x50 0x28 */
- _MSCAN_RESERVED_(20, 2); /* + 0x52 */
+ _MSCAN_RESERVED_(21, 2); /* + 0x52 */
u16 dsr7_6; /* + 0x54 0x2a */
- _MSCAN_RESERVED_(21, 2); /* + 0x56 */
+ _MSCAN_RESERVED_(22, 2); /* + 0x56 */
u8 dlr; /* + 0x58 0x2c */
- u8:8; /* + 0x59 0x2d */
- _MSCAN_RESERVED_(22, 2); /* + 0x5a */
+ u8 reserved; /* + 0x59 0x2d */
+ _MSCAN_RESERVED_(23, 2); /* + 0x5a */
u16 time; /* + 0x5c 0x2e */
} rx;
- _MSCAN_RESERVED_(23, 2); /* + 0x5e */
+ _MSCAN_RESERVED_(24, 2); /* + 0x5e */
struct {
u16 idr1_0; /* + 0x60 0x30 */
- _MSCAN_RESERVED_(24, 2); /* + 0x62 */
+ _MSCAN_RESERVED_(25, 2); /* + 0x62 */
u16 idr3_2; /* + 0x64 0x32 */
- _MSCAN_RESERVED_(25, 2); /* + 0x66 */
+ _MSCAN_RESERVED_(26, 2); /* + 0x66 */
u16 dsr1_0; /* + 0x68 0x34 */
- _MSCAN_RESERVED_(26, 2); /* + 0x6a */
+ _MSCAN_RESERVED_(27, 2); /* + 0x6a */
u16 dsr3_2; /* + 0x6c 0x36 */
- _MSCAN_RESERVED_(27, 2); /* + 0x6e */
+ _MSCAN_RESERVED_(28, 2); /* + 0x6e */
u16 dsr5_4; /* + 0x70 0x38 */
- _MSCAN_RESERVED_(28, 2); /* + 0x72 */
+ _MSCAN_RESERVED_(29, 2); /* + 0x72 */
u16 dsr7_6; /* + 0x74 0x3a */
- _MSCAN_RESERVED_(29, 2); /* + 0x76 */
+ _MSCAN_RESERVED_(30, 2); /* + 0x76 */
u8 dlr; /* + 0x78 0x3c */
u8 tbpr; /* + 0x79 0x3d */
- _MSCAN_RESERVED_(30, 2); /* + 0x7a */
+ _MSCAN_RESERVED_(31, 2); /* + 0x7a */
u16 time; /* + 0x7c 0x3e */
} tx;
- _MSCAN_RESERVED_(31, 2); /* + 0x7e */
+ _MSCAN_RESERVED_(32, 2); /* + 0x7e */
} __attribute__ ((packed));
#undef _MSCAN_RESERVED_
@@ -237,6 +238,15 @@ struct mscan_regs {
#define MSCAN_POWEROFF_MODE (MSCAN_CSWAI | MSCAN_SLPRQ)
#define MSCAN_SET_MODE_RETRIES 255
#define MSCAN_ECHO_SKB_MAX 3
+#define MSCAN_RX_INTS_ENABLE (MSCAN_OVRIE | MSCAN_RXFIE | MSCAN_CSCIE | \
+ MSCAN_RSTATE1 | MSCAN_RSTATE0 | \
+ MSCAN_TSTATE1 | MSCAN_TSTATE0)
+
+/* MSCAN type variants */
+enum {
+ MSCAN_TYPE_MPC5200,
+ MSCAN_TYPE_MPC5121
+};
#define BTR0_BRP_MASK 0x3f
#define BTR0_SJW_SHIFT 6
@@ -270,6 +280,7 @@ struct tx_queue_entry {
struct mscan_priv {
struct can_priv can; /* must be the first member */
+ unsigned int type; /* MSCAN type variants */
long open_time;
unsigned long flags;
void __iomem *reg_base; /* ioremap'ed address to registers */
@@ -285,12 +296,7 @@ struct mscan_priv {
};
extern struct net_device *alloc_mscandev(void);
-/*
- * clock_src:
- * 1 = The MSCAN clock source is the onchip Bus Clock.
- * 0 = The MSCAN clock source is the chip Oscillator Clock.
- */
-extern int register_mscandev(struct net_device *dev, int clock_src);
+extern int register_mscandev(struct net_device *dev, int mscan_clksrc);
extern void unregister_mscandev(struct net_device *dev);
#endif /* __MSCAN_H__ */
generated by cgit v1.1 at 2024-12-25 19:11:05 +0000