/
flexCAN-fixes.patch
3261 lines (3248 loc) · 87.6 KB
/
flexCAN-fixes.patch
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Subject: Replace existing FlexCAN driver with driver from 2.6.38
diff --exclude CVS --exclude .git -uNr linux-2.6.35.3/arch/arm/mach-mx28/clock.c linux-2.6.35.3.modified/arch/arm/mach-mx28/clock.c
--- linux-2.6.35.3/arch/arm/mach-mx28/clock.c 2012-01-20 15:25:42.988416724 +0000
+++ linux-2.6.35.3.modified/arch/arm/mach-mx28/clock.c 2012-01-18 20:01:10.635370568 +0000
@@ -1721,13 +1721,13 @@
.clk = &hsadc_clk,
},
{
- .con_id = "can_clk",
- .dev_id = "FlexCAN.0",
+// .con_id = "can_clk",
+ .dev_id = "imx28-flexcan.0",
.clk = &flexcan_clk[0],
},
{
- .con_id = "can_clk",
- .dev_id = "FlexCAN.1",
+// .con_id = "can_clk",
+ .dev_id = "imx28-flexcan.1",
.clk = &flexcan_clk[1],
},
{
diff --exclude CVS --exclude .git -uNr linux-2.6.35.3/arch/arm/mach-mx28/device.c linux-2.6.35.3.modified/arch/arm/mach-mx28/device.c
--- linux-2.6.35.3/arch/arm/mach-mx28/device.c 2012-01-20 15:25:43.065476849 +0000
+++ linux-2.6.35.3.modified/arch/arm/mach-mx28/device.c 2012-01-18 19:13:23.868087529 +0000
@@ -50,6 +50,8 @@
#include <mach/ddi_bc.h>
#include <mach/pinctrl.h>
+#include <linux/can/platform/flexcan.h>
+
#include "regs-digctl.h"
#include "device.h"
#if defined(CONFIG_MACH_TS7600)
@@ -1127,7 +1128,7 @@
#endif
#if defined(CONFIG_CAN_FLEXCAN) || defined(CONFIG_CAN_FLEXCAN_MODULE)
-static void flexcan_xcvr_enable(int id, int en)
+static void flexcan_xcvr_enable(int en)
{
static int pwdn;
if (en) {
@@ -1139,6 +1140,8 @@
}
}
+#if 0
+// OLD flexcan drvier
struct flexcan_platform_data flexcan_data[] = {
{
.core_reg = NULL,
@@ -1174,6 +1177,16 @@
.std_msg = 1,
},
};
+#endif
+
+struct flexcan_platform_data flexcan_data[] = {
+ {
+ .transceiver_switch = flexcan_xcvr_enable
+ },
+ {
+ .transceiver_switch = flexcan_xcvr_enable
+ },
+};
static struct resource flexcan0_resources[] = {
{
@@ -1199,7 +1212,7 @@
static inline void mx28_init_flexcan(void)
{
struct platform_device *pdev;
- pdev = mxs_get_device("FlexCAN", 0);
+ pdev = mxs_get_device("imx28-flexcan", 0);
if (pdev == NULL || IS_ERR(pdev))
return;
pdev->resource = flexcan0_resources;
@@ -1207,7 +1220,7 @@
pdev->dev.platform_data = &flexcan_data[0];
mxs_add_device(pdev, 2);
- pdev = mxs_get_device("FlexCAN", 1);
+ pdev = mxs_get_device("imx28-flexcan", 1);
if (pdev == NULL || IS_ERR(pdev))
return;
pdev->resource = flexcan1_resources;
diff --exclude CVS --exclude .git -uNr linux-2.6.35.3/arch/arm/plat-mxs/device.c linux-2.6.35.3.modified/arch/arm/plat-mxs/device.c
--- linux-2.6.35.3/arch/arm/plat-mxs/device.c 2012-01-20 15:25:43.108309154 +0000
+++ linux-2.6.35.3.modified/arch/arm/plat-mxs/device.c 2012-01-18 19:04:41.171750931 +0000
@@ -407,14 +407,14 @@
defined(CONFIG_CAN_FLEXCAN_MODULE)
static struct platform_device mxs_flexcan[] = {
{
- .name = "FlexCAN",
+ .name = "imx28-flexcan",
.id = 0,
.dev = {
.release = mxs_nop_release,
},
},
{
- .name = "FlexCAN",
+ .name = "imx28-flexcan",
.id = 1,
.dev = {
.release = mxs_nop_release,
@@ -709,7 +709,7 @@
#if defined(CONFIG_CAN_FLEXCAN) || \
defined(CONFIG_CAN_FLEXCAN_MODULE)
{
- .name = "FlexCAN",
+ .name = "imx28-flexcan",
.size = ARRAY_SIZE(mxs_flexcan),
.pdev = mxs_flexcan,
},
diff --exclude CVS --exclude .git -uNr linux-2.6.35.3/drivers/net/can/Kconfig linux-2.6.35.3.modified/drivers/net/can/Kconfig
--- linux-2.6.35.3/drivers/net/can/Kconfig 2012-01-20 15:25:36.988644854 +0000
+++ linux-2.6.35.3.modified/drivers/net/can/Kconfig 2012-01-18 17:19:21.204408580 +0000
@@ -79,6 +79,15 @@
source "drivers/net/can/usb/Kconfig"
+config CAN_FLEXCAN
+ tristate "Freescale FlexCAN"
+ depends on CAN_DEV && (ARCH_MX25 || ARCH_MX35 || ARCH_MX28 || ARCH_MX53)
+ default y
+ ---help---
+ This select the support of Freescale CAN(FlexCAN).
+ This driver can also be built as a module.
+ If unsure, say N.
+
config CAN_DEBUG_DEVICES
bool "CAN devices debugging messages"
depends on CAN
@@ -89,13 +98,4 @@
a problem with CAN support and want to see more of what is going
on.
-config CAN_FLEXCAN
- tristate "Freescale FlexCAN"
- depends on CAN && (ARCH_MX25 || ARCH_MX35 || ARCH_MX28 || ARCH_MX53)
- default y
- ---help---
- This select the support of Freescale CAN(FlexCAN).
- This driver can also be built as a module.
- If unsure, say N.
-
endmenu
diff --exclude CVS --exclude .git -uNr linux-2.6.35.3/drivers/net/can/Makefile linux-2.6.35.3.modified/drivers/net/can/Makefile
--- linux-2.6.35.3/drivers/net/can/Makefile 2012-01-20 15:25:36.988644854 +0000
+++ linux-2.6.35.3.modified/drivers/net/can/Makefile 2012-01-18 17:08:10.236085180 +0000
@@ -3,7 +3,7 @@
#
obj-$(CONFIG_CAN_VCAN) += vcan.o
-obj-$(CONFIG_CAN_FLEXCAN) += flexcan/
+obj-$(CONFIG_CAN_FLEXCAN) += flexcan.o
obj-$(CONFIG_CAN_DEV) += can-dev.o
can-dev-y := dev.o
diff --exclude CVS --exclude .git -uNr linux-2.6.35.3/drivers/net/can/flexcan/Makefile linux-2.6.35.3.modified/drivers/net/can/flexcan/Makefile
--- linux-2.6.35.3/drivers/net/can/flexcan/Makefile 2012-01-20 15:25:36.992320255 +0000
+++ linux-2.6.35.3.modified/drivers/net/can/flexcan/Makefile 1970-01-01 01:00:00.000000000 +0100
@@ -1,3 +0,0 @@
-obj-$(CONFIG_CAN_FLEXCAN) += flexcan.o
-
-flexcan-y := dev.o drv.o mbm.o
diff --exclude CVS --exclude .git -uNr linux-2.6.35.3/drivers/net/can/flexcan/dev.c linux-2.6.35.3.modified/drivers/net/can/flexcan/dev.c
--- linux-2.6.35.3/drivers/net/can/flexcan/dev.c 2012-01-20 15:25:40.520327866 +0000
+++ linux-2.6.35.3.modified/drivers/net/can/flexcan/dev.c 1970-01-01 01:00:00.000000000 +0100
@@ -1,743 +0,0 @@
-/*
- * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
- */
-
-/*
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-/*!
- * @file dev.c
- *
- * @brief Driver for Freescale CAN Controller FlexCAN.
- *
- * @ingroup can
- */
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/unistd.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/spinlock.h>
-#include <linux/device.h>
-#include <linux/fsl_devices.h>
-
-#include <linux/module.h>
-#ifdef CONFIG_ARCH_MXS
-#include <mach/device.h>
-#endif
-#include "flexcan.h"
-
-#define DEFAULT_BITRATE 500000
-#define TIME_SEGMENT_MIN 8
-#define TIME_SEGMENT_MAX 25
-#define TIME_SEGMENT_MID ((TIME_SEGMENT_MIN + TIME_SEGMENT_MAX)/2)
-
-struct time_segment {
- char propseg;
- char pseg1;
- char pseg2;
-};
-
-struct time_segment time_segments[] = {
- { /* total 8 timequanta */
- 1, 2, 1
- },
- { /* total 9 timequanta */
- 1, 2, 2
- },
- { /* total 10 timequanta */
- 2, 2, 2
- },
- { /* total 11 timequanta */
- 2, 2, 3
- },
- { /* total 12 timequanta */
- 2, 3, 3
- },
- { /* total 13 timequanta */
- 3, 3, 3
- },
- { /* total 14 timequanta */
- 3, 3, 4
- },
- { /* total 15 timequanta */
- 3, 4, 4
- },
- { /* total 16 timequanta */
- 4, 4, 4
- },
- { /* total 17 timequanta */
- 4, 4, 5
- },
- { /* total 18 timequanta */
- 4, 5, 5
- },
- { /* total 19 timequanta */
- 5, 5, 5
- },
- { /* total 20 timequanta */
- 5, 5, 6
- },
- { /* total 21 timequanta */
- 5, 6, 6
- },
- { /* total 22 timequanta */
- 6, 6, 6
- },
- { /* total 23 timequanta */
- 6, 6, 7
- },
- { /* total 24 timequanta */
- 6, 7, 7
- },
- { /* total 25 timequanta */
- 7, 7, 7
- },
-};
-
-enum {
- FLEXCAN_ATTR_STATE = 0,
- FLEXCAN_ATTR_BITRATE,
- FLEXCAN_ATTR_BR_PRESDIV,
- FLEXCAN_ATTR_BR_RJW,
- FLEXCAN_ATTR_BR_PROPSEG,
- FLEXCAN_ATTR_BR_PSEG1,
- FLEXCAN_ATTR_BR_PSEG2,
- FLEXCAN_ATTR_BR_CLKSRC,
- FLEXCAN_ATTR_MAXMB,
- FLEXCAN_ATTR_XMIT_MAXMB,
- FLEXCAN_ATTR_FIFO,
- FLEXCAN_ATTR_WAKEUP,
- FLEXCAN_ATTR_SRX_DIS,
- FLEXCAN_ATTR_WAK_SRC,
- FLEXCAN_ATTR_BCC,
- FLEXCAN_ATTR_LOCAL_PRIORITY,
- FLEXCAN_ATTR_ABORT,
- FLEXCAN_ATTR_LOOPBACK,
- FLEXCAN_ATTR_SMP,
- FLEXCAN_ATTR_BOFF_REC,
- FLEXCAN_ATTR_TSYN,
- FLEXCAN_ATTR_LISTEN,
- FLEXCAN_ATTR_EXTEND_MSG,
- FLEXCAN_ATTR_STANDARD_MSG,
-#ifdef CONFIG_CAN_DEBUG_DEVICES
- FLEXCAN_ATTR_DUMP_REG,
- FLEXCAN_ATTR_DUMP_XMIT_MB,
- FLEXCAN_ATTR_DUMP_RX_MB,
-#endif
- FLEXCAN_ATTR_MAX
-};
-
-static ssize_t flexcan_show_attr(struct device *dev,
- struct device_attribute *attr, char *buf);
-static ssize_t flexcan_set_attr(struct device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count);
-
-static struct device_attribute flexcan_dev_attr[FLEXCAN_ATTR_MAX] = {
- [FLEXCAN_ATTR_STATE] = __ATTR(state, 0444, flexcan_show_attr, NULL),
- [FLEXCAN_ATTR_BITRATE] =
- __ATTR(bitrate, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_BR_PRESDIV] =
- __ATTR(br_presdiv, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_BR_RJW] =
- __ATTR(br_rjw, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_BR_PROPSEG] =
- __ATTR(br_propseg, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_BR_PSEG1] =
- __ATTR(br_pseg1, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_BR_PSEG2] =
- __ATTR(br_pseg2, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_BR_CLKSRC] =
- __ATTR(br_clksrc, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_MAXMB] =
- __ATTR(maxmb, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_XMIT_MAXMB] =
- __ATTR(xmit_maxmb, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_FIFO] =
- __ATTR(fifo, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_WAKEUP] =
- __ATTR(wakeup, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_SRX_DIS] =
- __ATTR(srx_dis, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_WAK_SRC] =
- __ATTR(wak_src, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_BCC] =
- __ATTR(bcc, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_LOCAL_PRIORITY] =
- __ATTR(local_priority, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_ABORT] =
- __ATTR(abort, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_LOOPBACK] =
- __ATTR(loopback, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_SMP] =
- __ATTR(smp, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_BOFF_REC] =
- __ATTR(boff_rec, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_TSYN] =
- __ATTR(tsyn, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_LISTEN] =
- __ATTR(listen, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_EXTEND_MSG] =
- __ATTR(ext_msg, 0644, flexcan_show_attr, flexcan_set_attr),
- [FLEXCAN_ATTR_STANDARD_MSG] =
- __ATTR(std_msg, 0644, flexcan_show_attr, flexcan_set_attr),
-#ifdef CONFIG_CAN_DEBUG_DEVICES
- [FLEXCAN_ATTR_DUMP_REG] =
- __ATTR(dump_reg, 0444, flexcan_show_attr, NULL),
- [FLEXCAN_ATTR_DUMP_XMIT_MB] =
- __ATTR(dump_xmit_mb, 0444, flexcan_show_attr, NULL),
- [FLEXCAN_ATTR_DUMP_RX_MB] =
- __ATTR(dump_rx_mb, 0444, flexcan_show_attr, NULL),
-#endif
-};
-
-static void flexcan_set_bitrate(struct flexcan_device *flexcan, int bitrate)
-{
- /* TODO:: implement in future
- * based on the bitrate to get the timing of
- * presdiv, pseg1, pseg2, propseg
- */
- int i, rate, div;
- bool found = false;
- struct time_segment *segment;
- rate = clk_get_rate(flexcan->clk);
-
- if (!bitrate)
- bitrate = DEFAULT_BITRATE;
-
- if (rate % bitrate == 0) {
- div = rate / bitrate;
- for (i = TIME_SEGMENT_MID; i <= TIME_SEGMENT_MAX; i++) {
- if (div % i == 0) {
- found = true;
- break;
- }
- }
- if (!found) {
- for (i = TIME_SEGMENT_MID - 1;
- i >= TIME_SEGMENT_MIN; i--) {
- if (div % i == 0) {
- found = true;
- break;
- }
- }
-
- }
- }
-
- if (found) {
- segment = &time_segments[i - TIME_SEGMENT_MIN];
- flexcan->br_presdiv = div/i - 1;
- flexcan->br_propseg = segment->propseg;
- flexcan->br_pseg1 = segment->pseg1;
- flexcan->br_pseg2 = segment->pseg2;
- flexcan->bitrate = bitrate;
- } else {
- pr_info("The bitrate %d can't supported with clock \
- rate of %d \n", bitrate, rate);
- }
-}
-
-static void flexcan_update_bitrate(struct flexcan_device *flexcan)
-{
- int rate, div;
- struct flexcan_platform_data *plat_data;
- plat_data = flexcan->dev->dev.platform_data;
-
- if (plat_data->root_clk_id)
- rate = clk_get_rate(flexcan->clk);
- else {
- if (flexcan->br_clksrc)
- rate = clk_get_rate(flexcan->clk);
- else {
- struct clk *clk;
- clk = clk_get(NULL, "ckih");
- if (!clk)
- return;
- rate = clk_get_rate(clk);
- clk_put(clk);
- }
- }
- if (!rate)
- return;
-
- div = (flexcan->br_presdiv + 1);
- div *=
- (flexcan->br_propseg + flexcan->br_pseg1 + flexcan->br_pseg2 + 4);
- flexcan->bitrate = (rate + div - 1) / div;
-}
-
-#ifdef CONFIG_CAN_DEBUG_DEVICES
-static int flexcan_dump_reg(struct flexcan_device *flexcan, char *buf)
-{
- int ret = 0;
- unsigned int reg;
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_MCR);
- ret += sprintf(buf + ret, "MCR::0x%x\n", reg);
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_CTRL);
- ret += sprintf(buf + ret, "CTRL::0x%x\n", reg);
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_RXGMASK);
- ret += sprintf(buf + ret, "RXGMASK::0x%x\n", reg);
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_RX14MASK);
- ret += sprintf(buf + ret, "RX14MASK::0x%x\n", reg);
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_RX15MASK);
- ret += sprintf(buf + ret, "RX15MASK::0x%x\n", reg);
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_ECR);
- ret += sprintf(buf + ret, "ECR::0x%x\n", reg);
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_ESR);
- ret += sprintf(buf + ret, "ESR::0x%x\n", reg);
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_IMASK2);
- ret += sprintf(buf + ret, "IMASK2::0x%x\n", reg);
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_IMASK1);
- ret += sprintf(buf + ret, "IMASK1::0x%x\n", reg);
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_IFLAG2);
- ret += sprintf(buf + ret, "IFLAG2::0x%x\n", reg);
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_IFLAG1);
- ret += sprintf(buf + ret, "IFLAG1::0x%x\n", reg);
- return ret;
-}
-
-static int flexcan_dump_xmit_mb(struct flexcan_device *flexcan, char *buf)
-{
- int ret = 0, i;
- i = flexcan->xmit_maxmb + 1;
- for (; i <= flexcan->maxmb; i++)
- ret +=
- sprintf(buf + ret,
- "mb[%d]::CS:0x%x ID:0x%x DATA[1~2]:0x%02x,0x%02x\n",
- i, flexcan->hwmb[i].mb_cs,
- flexcan->hwmb[i].mb_id, flexcan->hwmb[i].mb_data[1],
- flexcan->hwmb[i].mb_data[2]);
- return ret;
-}
-
-static int flexcan_dump_rx_mb(struct flexcan_device *flexcan, char *buf)
-{
- int ret = 0, i;
- for (i = 0; i <= flexcan->xmit_maxmb; i++)
- ret +=
- sprintf(buf + ret,
- "mb[%d]::CS:0x%x ID:0x%x DATA[1~2]:0x%02x,0x%02x\n",
- i, flexcan->hwmb[i].mb_cs,
- flexcan->hwmb[i].mb_id, flexcan->hwmb[i].mb_data[1],
- flexcan->hwmb[i].mb_data[2]);
- return ret;
-}
-#endif
-
-static ssize_t flexcan_show_state(struct net_device *net, char *buf)
-{
- int ret, esr;
- struct flexcan_device *flexcan = netdev_priv(net);
- ret = sprintf(buf, "%s::", netif_running(net) ? "Start" : "Stop");
- if (netif_carrier_ok(net)) {
- esr = __raw_readl(flexcan->io_base + CAN_HW_REG_ESR);
- switch ((esr & __ESR_FLT_CONF_MASK) >> __ESR_FLT_CONF_OFF) {
- case 0:
- ret += sprintf(buf + ret, "normal\n");
- break;
- case 1:
- ret += sprintf(buf + ret, "error passive\n");
- break;
- default:
- ret += sprintf(buf + ret, "bus off\n");
- }
- } else
- ret += sprintf(buf + ret, "bus off\n");
- return ret;
-}
-
-static ssize_t flexcan_show_attr(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- int attr_id;
- struct net_device *net;
- struct flexcan_device *flexcan;
-
- net = dev_get_drvdata(dev);
- BUG_ON(!net);
- flexcan = netdev_priv(net);
- BUG_ON(!flexcan);
-
- attr_id = attr - flexcan_dev_attr;
- switch (attr_id) {
- case FLEXCAN_ATTR_STATE:
- return flexcan_show_state(net, buf);
- case FLEXCAN_ATTR_BITRATE:
- return sprintf(buf, "%d\n", flexcan->bitrate);
- case FLEXCAN_ATTR_BR_PRESDIV:
- return sprintf(buf, "%d\n", flexcan->br_presdiv + 1);
- case FLEXCAN_ATTR_BR_RJW:
- return sprintf(buf, "%d\n", flexcan->br_rjw);
- case FLEXCAN_ATTR_BR_PROPSEG:
- return sprintf(buf, "%d\n", flexcan->br_propseg + 1);
- case FLEXCAN_ATTR_BR_PSEG1:
- return sprintf(buf, "%d\n", flexcan->br_pseg1 + 1);
- case FLEXCAN_ATTR_BR_PSEG2:
- return sprintf(buf, "%d\n", flexcan->br_pseg2 + 1);
- case FLEXCAN_ATTR_BR_CLKSRC:
- return sprintf(buf, "%s\n", flexcan->br_clksrc ? "bus" : "osc");
- case FLEXCAN_ATTR_MAXMB:
- return sprintf(buf, "%d\n", flexcan->maxmb + 1);
- case FLEXCAN_ATTR_XMIT_MAXMB:
- return sprintf(buf, "%d\n", flexcan->xmit_maxmb + 1);
- case FLEXCAN_ATTR_FIFO:
- return sprintf(buf, "%d\n", flexcan->fifo);
- case FLEXCAN_ATTR_WAKEUP:
- return sprintf(buf, "%d\n", flexcan->wakeup);
- case FLEXCAN_ATTR_SRX_DIS:
- return sprintf(buf, "%d\n", flexcan->srx_dis);
- case FLEXCAN_ATTR_WAK_SRC:
- return sprintf(buf, "%d\n", flexcan->wak_src);
- case FLEXCAN_ATTR_BCC:
- return sprintf(buf, "%d\n", flexcan->bcc);
- case FLEXCAN_ATTR_LOCAL_PRIORITY:
- return sprintf(buf, "%d\n", flexcan->lprio);
- case FLEXCAN_ATTR_ABORT:
- return sprintf(buf, "%d\n", flexcan->abort);
- case FLEXCAN_ATTR_LOOPBACK:
- return sprintf(buf, "%d\n", flexcan->loopback);
- case FLEXCAN_ATTR_SMP:
- return sprintf(buf, "%d\n", flexcan->smp);
- case FLEXCAN_ATTR_BOFF_REC:
- return sprintf(buf, "%d\n", flexcan->boff_rec);
- case FLEXCAN_ATTR_TSYN:
- return sprintf(buf, "%d\n", flexcan->tsyn);
- case FLEXCAN_ATTR_LISTEN:
- return sprintf(buf, "%d\n", flexcan->listen);
- case FLEXCAN_ATTR_EXTEND_MSG:
- return sprintf(buf, "%d\n", flexcan->ext_msg);
- case FLEXCAN_ATTR_STANDARD_MSG:
- return sprintf(buf, "%d\n", flexcan->std_msg);
-#ifdef CONFIG_CAN_DEBUG_DEVICES
- case FLEXCAN_ATTR_DUMP_REG:
- return flexcan_dump_reg(flexcan, buf);
- case FLEXCAN_ATTR_DUMP_XMIT_MB:
- return flexcan_dump_xmit_mb(flexcan, buf);
- case FLEXCAN_ATTR_DUMP_RX_MB:
- return flexcan_dump_rx_mb(flexcan, buf);
-#endif
- default:
- return sprintf(buf, "%s:%p->%p\n", __func__, flexcan_dev_attr,
- attr);
- }
-}
-
-static ssize_t flexcan_set_attr(struct device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
-{
- int attr_id, tmp;
- struct net_device *net;
- struct flexcan_device *flexcan;
-
- net = dev_get_drvdata(dev);
- BUG_ON(!net);
- flexcan = netdev_priv(net);
- BUG_ON(!flexcan);
-
- attr_id = attr - flexcan_dev_attr;
-
- if (mutex_lock_interruptible(&flexcan->mutex))
- return count;
-
- if (netif_running(net))
- goto set_finish;
-
- if (attr_id == FLEXCAN_ATTR_BR_CLKSRC) {
- if (!strncasecmp(buf, "bus", 3))
- flexcan->br_clksrc = 1;
- else if (!strncasecmp(buf, "osc", 3))
- flexcan->br_clksrc = 0;
- goto set_finish;
- }
-
- tmp = simple_strtoul(buf, NULL, 0);
- switch (attr_id) {
- case FLEXCAN_ATTR_BITRATE:
- flexcan_set_bitrate(flexcan, tmp);
- break;
- case FLEXCAN_ATTR_BR_PRESDIV:
- if ((tmp > 0) && (tmp <= FLEXCAN_MAX_PRESDIV)) {
- flexcan->br_presdiv = tmp - 1;
- flexcan_update_bitrate(flexcan);
- }
- break;
- case FLEXCAN_ATTR_BR_RJW:
- if ((tmp > 0) && (tmp <= FLEXCAN_MAX_RJW))
- flexcan->br_rjw = tmp - 1;
- break;
- case FLEXCAN_ATTR_BR_PROPSEG:
- if ((tmp > 0) && (tmp <= FLEXCAN_MAX_PROPSEG)) {
- flexcan->br_propseg = tmp - 1;
- flexcan_update_bitrate(flexcan);
- }
- break;
- case FLEXCAN_ATTR_BR_PSEG1:
- if ((tmp > 0) && (tmp <= FLEXCAN_MAX_PSEG1)) {
- flexcan->br_pseg1 = tmp - 1;
- flexcan_update_bitrate(flexcan);
- }
- break;
- case FLEXCAN_ATTR_BR_PSEG2:
- if ((tmp > 0) && (tmp <= FLEXCAN_MAX_PSEG2)) {
- flexcan->br_pseg2 = tmp - 1;
- flexcan_update_bitrate(flexcan);
- }
- break;
- case FLEXCAN_ATTR_MAXMB:
- if ((tmp > 0) && (tmp <= FLEXCAN_MAX_MB)) {
- if (flexcan->maxmb != (tmp - 1)) {
- flexcan->maxmb = tmp - 1;
- if (flexcan->xmit_maxmb < flexcan->maxmb)
- flexcan->xmit_maxmb = flexcan->maxmb;
- }
- }
- break;
- case FLEXCAN_ATTR_XMIT_MAXMB:
- if ((tmp > 0) && (tmp <= (flexcan->maxmb + 1))) {
- if (flexcan->xmit_maxmb != (tmp - 1))
- flexcan->xmit_maxmb = tmp - 1;
- }
- break;
- case FLEXCAN_ATTR_FIFO:
- flexcan->fifo = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_WAKEUP:
- flexcan->wakeup = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_SRX_DIS:
- flexcan->srx_dis = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_WAK_SRC:
- flexcan->wak_src = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_BCC:
- flexcan->bcc = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_LOCAL_PRIORITY:
- flexcan->lprio = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_ABORT:
- flexcan->abort = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_LOOPBACK:
- flexcan->loopback = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_SMP:
- flexcan->smp = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_BOFF_REC:
- flexcan->boff_rec = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_TSYN:
- flexcan->tsyn = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_LISTEN:
- flexcan->listen = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_EXTEND_MSG:
- flexcan->ext_msg = tmp ? 1 : 0;
- break;
- case FLEXCAN_ATTR_STANDARD_MSG:
- flexcan->std_msg = tmp ? 1 : 0;
- break;
- }
- set_finish:
- mutex_unlock(&flexcan->mutex);
- return count;
-}
-
-static void flexcan_device_default(struct flexcan_device *dev)
-{
- struct platform_device *pdev = dev->dev;
- struct flexcan_platform_data *plat_data = (pdev->dev).platform_data;
- dev->br_clksrc = plat_data->br_clksrc;
- dev->br_rjw = plat_data->br_rjw;
- dev->br_presdiv = plat_data->br_presdiv;
- dev->br_propseg = plat_data->br_propseg;
- dev->br_pseg1 = plat_data->br_pseg1;
- dev->br_pseg2 = plat_data->br_pseg2;
-
- dev->bcc = plat_data->bcc;
- dev->srx_dis = plat_data->srx_dis;
- dev->smp = plat_data->smp;
- dev->boff_rec = plat_data->boff_rec;
-
- dev->maxmb = FLEXCAN_MAX_MB - 1;
- dev->xmit_maxmb = (FLEXCAN_MAX_MB >> 1) - 1;
- dev->xmit_mb = dev->maxmb - dev->xmit_maxmb;
-
- dev->ext_msg = plat_data->ext_msg;
- dev->std_msg = plat_data->std_msg;
-}
-
-static int flexcan_device_attach(struct flexcan_device *flexcan)
-{
- int ret;
- struct resource *res;
- struct platform_device *pdev = flexcan->dev;
- struct flexcan_platform_data *plat_data = (pdev->dev).platform_data;
- struct clk *can_root_clk;
-
- res = platform_get_resource(flexcan->dev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
-
- flexcan->io_base = ioremap(res->start, res->end - res->start + 1);
- if (!flexcan->io_base)
- return -ENOMEM;
-
- flexcan->irq = platform_get_irq(flexcan->dev, 0);
- if (!flexcan->irq) {
- ret = -ENODEV;
- goto no_irq_err;
- }
-
- ret = -EINVAL;
- if (plat_data) {
- if (plat_data->core_reg) {
- flexcan->core_reg = regulator_get(&pdev->dev,
- plat_data->core_reg);
- if (!flexcan->core_reg)
- goto plat_err;
- }
-
- if (plat_data->io_reg) {
- flexcan->io_reg = regulator_get(&pdev->dev,
- plat_data->io_reg);
- if (!flexcan->io_reg)
- goto plat_err;
- }
- }
- flexcan->clk = clk_get(&(flexcan->dev)->dev, "can_clk");
- if (plat_data->root_clk_id) {
- can_root_clk = clk_get(NULL, plat_data->root_clk_id);
- clk_set_parent(flexcan->clk, can_root_clk);
- }
- flexcan->hwmb = (struct can_hw_mb *)(flexcan->io_base + CAN_MB_BASE);
- flexcan->rx_mask = (unsigned int *)(flexcan->io_base + CAN_RXMASK_BASE);
-
- return 0;
- plat_err:
- if (flexcan->core_reg) {
- regulator_put(flexcan->core_reg);
- flexcan->core_reg = NULL;
- }
- no_irq_err:
- if (flexcan->io_base)
- iounmap(flexcan->io_base);
- return ret;
-}
-
-static void flexcan_device_detach(struct flexcan_device *flexcan)
-{
- if (flexcan->clk) {
- clk_put(flexcan->clk);
- flexcan->clk = NULL;
- }
-
- if (flexcan->io_reg) {
- regulator_put(flexcan->io_reg);
- flexcan->io_reg = NULL;
- }
-
- if (flexcan->core_reg) {
- regulator_put(flexcan->core_reg);
- flexcan->core_reg = NULL;
- }
-
- if (flexcan->io_base)
- iounmap(flexcan->io_base);
-}
-
-/*!
- * @brief The function allocates can device.
- *
- * @param pdev the pointer of platform device.
- * @param setup the initial function pointer of network device.
- *
- * @return none
- */
-struct net_device *flexcan_device_alloc(struct platform_device *pdev,
- void (*setup) (struct net_device *dev))
-{
- struct flexcan_device *flexcan;
- struct net_device *net;
- int i, num;
-
- net = alloc_netdev(sizeof(*flexcan), "can%d", setup);
- if (net == NULL) {
- printk(KERN_ERR "Allocate netdevice for FlexCAN fail!\n");
- return NULL;
- }
- flexcan = netdev_priv(net);
- memset(flexcan, 0, sizeof(*flexcan));
-
- mutex_init(&flexcan->mutex);
- init_timer(&flexcan->timer);
-
- flexcan->dev = pdev;
- if (flexcan_device_attach(flexcan)) {
- printk(KERN_ERR "Attach FlexCAN fail!\n");
- free_netdev(net);
- return NULL;
- }
- flexcan_device_default(flexcan);
- flexcan_set_bitrate(flexcan, flexcan->bitrate);
- flexcan_update_bitrate(flexcan);
-
- num = ARRAY_SIZE(flexcan_dev_attr);
-
- for (i = 0; i < num; i++) {
- if (device_create_file(&pdev->dev, flexcan_dev_attr + i)) {
- printk(KERN_ERR "Create attribute file fail!\n");
- break;
- }
- }
-
- if (i != num) {
- for (; i >= 0; i--)
- device_remove_file(&pdev->dev, flexcan_dev_attr + i);
- free_netdev(net);
- return NULL;
- }
- dev_set_drvdata(&pdev->dev, net);
- return net;
-}
-
-/*!
- * @brief The function frees can device.
- *
- * @param pdev the pointer of platform device.
- *
- * @return none
- */
-void flexcan_device_free(struct platform_device *pdev)
-{
- struct net_device *net;
- struct flexcan_device *flexcan;
- int i, num;
- net = (struct net_device *)dev_get_drvdata(&pdev->dev);
-
- unregister_netdev(net);
- flexcan = netdev_priv(net);
- del_timer(&flexcan->timer);
-
- num = ARRAY_SIZE(flexcan_dev_attr);
-
- for (i = 0; i < num; i++)
- device_remove_file(&pdev->dev, flexcan_dev_attr + i);
-
- flexcan_device_detach(netdev_priv(net));
- free_netdev(net);
-}
diff --exclude CVS --exclude .git -uNr linux-2.6.35.3/drivers/net/can/flexcan/drv.c linux-2.6.35.3.modified/drivers/net/can/flexcan/drv.c
--- linux-2.6.35.3/drivers/net/can/flexcan/drv.c 2012-01-20 15:25:36.992320255 +0000
+++ linux-2.6.35.3.modified/drivers/net/can/flexcan/drv.c 1970-01-01 01:00:00.000000000 +0100
@@ -1,628 +0,0 @@
-/*
- * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
- */
-
-/*
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-/*!
- * @file drv.c
- *
- * @brief Driver for Freescale CAN Controller FlexCAN.
- *
- * @ingroup can
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-#include <linux/if_ether.h>
-#include <linux/platform_device.h>
-#include <linux/regulator/consumer.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/fsl_devices.h>
-#include <linux/random.h>
-#include "flexcan.h"
-
-static void flexcan_hw_start(struct flexcan_device *flexcan)
-{
- unsigned int reg;
- if ((flexcan->maxmb + 1) > 32) {
- __raw_writel(0xFFFFFFFF, flexcan->io_base + CAN_HW_REG_IMASK1);
- reg = (1 << (flexcan->maxmb - 31)) - 1;
- __raw_writel(reg, flexcan->io_base + CAN_HW_REG_IMASK2);
- } else {
- reg = (1 << (flexcan->maxmb + 1)) - 1;
- __raw_writel(reg, flexcan->io_base + CAN_HW_REG_IMASK1);
- __raw_writel(0, flexcan->io_base + CAN_HW_REG_IMASK2);
- }
-
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_MCR) & (~__MCR_HALT);
- __raw_writel(reg, flexcan->io_base + CAN_HW_REG_MCR);
-}
-
-static void flexcan_hw_stop(struct flexcan_device *flexcan)
-{
- unsigned int reg;
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_MCR);
- __raw_writel(reg | __MCR_HALT, flexcan->io_base + CAN_HW_REG_MCR);
-}
-
-static int flexcan_hw_reset(struct flexcan_device *flexcan)
-{
- unsigned int reg;
- int timeout = 100000;
-
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_MCR);
- __raw_writel(reg | __MCR_MDIS, flexcan->io_base + CAN_HW_REG_MCR);
-
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_CTRL);
- if (flexcan->br_clksrc)
- reg |= __CTRL_CLK_SRC;
- else
- reg &= ~__CTRL_CLK_SRC;
- __raw_writel(reg, flexcan->io_base + CAN_HW_REG_CTRL);
-
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_MCR) & (~__MCR_MDIS);
- __raw_writel(reg, flexcan->io_base + CAN_HW_REG_MCR);
- reg |= __MCR_SOFT_RST;
- __raw_writel(reg, flexcan->io_base + CAN_HW_REG_MCR);
-
- reg = __raw_readl(flexcan->io_base + CAN_HW_REG_MCR);