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authorSimon Glass <sjg@chromium.org>2014-07-23 06:54:59 -0600
committerSimon Glass <sjg@chromium.org>2014-07-23 14:07:23 +0100
commit709ea543b92489e7729d2d7ddd6c9f451e52158c (patch)
treec3ae9c03a7d031e510bab2cd3fa093e1f126c5ad /common/stdio.c
parent91d0be1dd845913ba276e041dc11d1297390de11 (diff)
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stdio: Pass device pointer to stdio methods
At present stdio device functions do not get any clue as to which stdio device is being acted on. Some implementations go to great lengths to work around this, such as defining a whole separate set of functions for each possible device. For driver model we need to associate a stdio_dev with a device. It doesn't seem possible to continue with this work-around approach. Instead, add a stdio_dev pointer to each of the stdio member functions. Note: The serial drivers have the same problem, but it is not strictly necessary to fix that to get driver model running. Also, if we convert serial over to driver model the problem will go away. Code size increases by 244 bytes for Thumb2 and 428 for PowerPC. 22: stdio: Pass device pointer to stdio methods arm: (for 2/2 boards) all +244.0 bss -4.0 text +248.0 powerpc: (for 1/1 boards) all +428.0 text +428.0 Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Marek Vasut <marex@denx.de> Reviewed-by: Marek Vasut <marex@denx.de>
Diffstat (limited to 'common/stdio.c')
-rw-r--r--common/stdio.c34
1 files changed, 27 insertions, 7 deletions
diff --git a/common/stdio.c b/common/stdio.c
index 844f98c..dd402cc 100644
--- a/common/stdio.c
+++ b/common/stdio.c
@@ -35,23 +35,43 @@ char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
#ifdef CONFIG_SYS_DEVICE_NULLDEV
-void nulldev_putc(const char c)
+void nulldev_putc(struct stdio_dev *dev, const char c)
{
/* nulldev is empty! */
}
-void nulldev_puts(const char *s)
+void nulldev_puts(struct stdio_dev *dev, const char *s)
{
/* nulldev is empty! */
}
-int nulldev_input(void)
+int nulldev_input(struct stdio_dev *dev)
{
/* nulldev is empty! */
return 0;
}
#endif
+void stdio_serial_putc(struct stdio_dev *dev, const char c)
+{
+ serial_putc(c);
+}
+
+void stdio_serial_puts(struct stdio_dev *dev, const char *s)
+{
+ serial_puts(s);
+}
+
+int stdio_serial_getc(struct stdio_dev *dev)
+{
+ return serial_getc();
+}
+
+int stdio_serial_tstc(struct stdio_dev *dev)
+{
+ return serial_tstc();
+}
+
/**************************************************************************
* SYSTEM DRIVERS
**************************************************************************
@@ -65,10 +85,10 @@ static void drv_system_init (void)
strcpy (dev.name, "serial");
dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
- dev.putc = serial_putc;
- dev.puts = serial_puts;
- dev.getc = serial_getc;
- dev.tstc = serial_tstc;
+ dev.putc = stdio_serial_putc;
+ dev.puts = stdio_serial_puts;
+ dev.getc = stdio_serial_getc;
+ dev.tstc = stdio_serial_tstc;
stdio_register (&dev);
#ifdef CONFIG_SYS_DEVICE_NULLDEV