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Commit 933aae54bea7d032023a59e0b3261b612f8065e0

Authored by Pavan Savoy
Committed by Greg Kroah-Hartman
1 parent 18ccecf99a
Exists in master and in 6 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

drivers:misc: ti-st: DEBUG uart, baud rate mods 

To debug different UARTs at different baud-rates connected to the WiLink
connectivity combo-chipset, this patch enables the debugging code so that upon
boot different UARTs at different baud-rates can be tried out to verify the
interface with WiLink.

Signed-off-by: Pavan Savoy <pavan_savoy@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Showing 1 changed file with 30 additions and 0 deletions Side-by-side Diff

drivers/misc/ti-st/st_kim.c
Diff comments   View file @ 933aae5
... ... @@ -573,6 +573,28 @@
573 573 return sprintf(buf, "%d\n", kim_data->ldisc_install);
574 574 }
575 575  
  576 +#ifdef DEBUG
  577 +static ssize_t store_dev_name(struct device *dev,
  578 + struct device_attribute *attr, const char *buf, size_t count)
  579 +{
  580 + struct kim_data_s *kim_data = dev_get_drvdata(dev);
  581 + pr_debug("storing dev name >%s<", buf);
  582 + strncpy(kim_data->dev_name, buf, count);
  583 + pr_debug("stored dev name >%s<", kim_data->dev_name);
  584 + return count;
  585 +}
  586 +
  587 +static ssize_t store_baud_rate(struct device *dev,
  588 + struct device_attribute *attr, const char *buf, size_t count)
  589 +{
  590 + struct kim_data_s *kim_data = dev_get_drvdata(dev);
  591 + pr_debug("storing baud rate >%s<", buf);
  592 + sscanf(buf, "%ld", &kim_data->baud_rate);
  593 + pr_debug("stored baud rate >%ld<", kim_data->baud_rate);
  594 + return count;
  595 +}
  596 +#endif /* if DEBUG */
  597 +
576 598 static ssize_t show_dev_name(struct device *dev,
577 599 struct device_attribute *attr, char *buf)
578 600 {
579 601  
580 602  
581 603  
... ... @@ -599,10 +621,18 @@
599 621 __ATTR(install, 0444, (void *)show_install, NULL);
600 622  
601 623 static struct kobj_attribute uart_dev_name =
  624 +#ifdef DEBUG /* TODO: move this to debug-fs if possible */
  625 +__ATTR(dev_name, 0644, (void *)show_dev_name, (void *)store_dev_name);
  626 +#else
602 627 __ATTR(dev_name, 0444, (void *)show_dev_name, NULL);
  628 +#endif
603 629  
604 630 static struct kobj_attribute uart_baud_rate =
  631 +#ifdef DEBUG /* TODO: move to debugfs */
  632 +__ATTR(baud_rate, 0644, (void *)show_baud_rate, (void *)store_baud_rate);
  633 +#else
605 634 __ATTR(baud_rate, 0444, (void *)show_baud_rate, NULL);
  635 +#endif
606 636  
607 637 static struct kobj_attribute uart_flow_cntrl =
608 638 __ATTR(flow_cntrl, 0444, (void *)show_flow_cntrl, NULL);