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coresight: restrict the available out modes to the ones from device tree 

Add check in coresight TPIU driver to show the avilable out_modes
from device tree entries.

Change-Id: Ica4c75687e57de380b4de5029b768a9d3a651ee9
Signed-off-by: Xiaogang Cui <xiaogang@codeaurora.org>
This commit is contained in:
Xiaogang Cui 2015-03-30 15:46:30 +08:00
parent 2007dfd3ce
commit dc1f7f3d5a
1 changed files with 10 additions and 2 deletions
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12
drivers/coresight/coresight-tpiu.c
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@ -1,4 +1,4 @@
/* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@ -836,12 +836,20 @@ static DEVICE_ATTR(out_mode, S_IRUGO | S_IWUSR, tpiu_show_out_mode,
static ssize_t tpiu_show_available_out_modes(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct tpiu_drvdata *drvdata = dev_get_drvdata(dev->parent);
int i;
ssize_t len = 0;
for (i = 0; i < ARRAY_SIZE(str_tpiu_out_mode); i++)
for (i = 0; i < ARRAY_SIZE(str_tpiu_out_mode); i++) {
if ((i == TPIU_OUT_MODE_SDC_SWDTRC && !drvdata->nidnt_swdtrc)
|| (i == TPIU_OUT_MODE_SDC_SWDUART && !drvdata->nidnt_swduart)
|| (i == TPIU_OUT_MODE_SDC_JTAG && !drvdata->nidnt_jtag)
|| (i == TPIU_OUT_MODE_SDC_SPMI && !drvdata->nidnt_spmi))
continue;
len += scnprintf(buf + len, PAGE_SIZE - len, "%s ",
str_tpiu_out_mode[i]);
}
len += scnprintf(buf + len, PAGE_SIZE - len, "\n");
return len;