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authorreinelt <>2004-08-29 20:07:55 +0000
committerreinelt <>2004-08-29 20:07:55 +0000
commitb7c841bfc7ec071b0bcb696440b0ccf68f4a05c4 (patch)
tree7b7087eea40320f388148721b0cb1c01c2142c7e
parent173f8cbcd18c0e3af0de31601c79241b5ccd9d2f (diff)
downloadlcd4linux-b7c841bfc7ec071b0bcb696440b0ccf68f4a05c4.tar.gz
[lcd4linux @ 2004-08-29 20:07:55 by reinelt]
Patch from Joco: Make RouterBoard Backlight configurable
Diffstat (limited to '')
-rw-r--r--drv_RouterBoard.c71
1 files changed, 62 insertions, 9 deletions
diff --git a/drv_RouterBoard.c b/drv_RouterBoard.c
index b54425c..49af2a3 100644
--- a/drv_RouterBoard.c
+++ b/drv_RouterBoard.c
@@ -1,4 +1,4 @@
-/* $Id: drv_RouterBoard.c,v 1.1 2004/08/29 13:03:41 reinelt Exp $
+/* $Id: drv_RouterBoard.c,v 1.2 2004/08/29 20:07:55 reinelt Exp $
*
* driver for the "Router Board LCD port"
* see port details at http://www.routerboard.com
@@ -23,6 +23,12 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
+ *
+ * $Log: drv_RouterBoard.c,v $
+ * Revision 1.2 2004/08/29 20:07:55 reinelt
+ *
+ * Patch from Joco: Make RouterBoard Backlight configurable
+ *
*/
@@ -78,6 +84,10 @@
* (http://www.national.com/ds/SC/SC1100.pdf)
* [RB User Manual]
* (http://www.routerboard.com)
+ *
+ *
+ * Revision 1.2
+ * Added backlight control
*/
@@ -169,6 +179,7 @@ static int GPOS;
/* Fixme: This actually ARE the GPO's... */
static unsigned RB_Leds = 0;
+static unsigned RB_BackLight = 0;
typedef struct {
int type;
@@ -238,10 +249,29 @@ static void drv_RB_poll_data ( void __attribute__((unused)) *notused)
#endif
+static int drv_RB_backlight ( int backlight)
+{
+ /* -1 is used to query the current Backlight */
+ if(backlight == -1 ) {
+ if (RB_BackLight > 0) return 1; // because RB_Backlight actually is 0x0800 or 0
+ return 0;
+ }
+
+ if (backlight < 0) backlight = 0;
+ if (backlight > 1) backlight = 1;
+
+ RB_BackLight = backlight ? LCD_BACKLIGHT : 0;
+
+ /* The status will be updated on next lcd operation! */
+ /* Fixme: should be updated immediately! */
+
+ return backlight;
+}
+
+
/* IOCS0 port number can read from PCI Configuration Space Function 0 (F0) */
/* at index 74h as 16 bit value (see [GEODE] 5.3.1 pg.151 and pg.176 Table 5-29 */
-
static unsigned getIocs0Port (void)
{
static unsigned ret = 0;
@@ -257,15 +287,14 @@ static unsigned getIocs0Port (void)
}
-
static void drv_RB_command ( const unsigned char cmd, const int delay)
{
- outw( RB_Leds | LCD_INITX | LCD_BACKLIGHT | cmd, getIocs0Port());
+ outw( RB_Leds | LCD_INITX | RB_BackLight | cmd, getIocs0Port());
ndelay(T_AS);
- outw( RB_Leds | LCD_BACKLIGHT | cmd, getIocs0Port());
+ outw( RB_Leds | RB_BackLight | cmd, getIocs0Port());
// wait for command completion
udelay(delay);
@@ -279,17 +308,17 @@ static void drv_RB_data ( const char *string, const int len, const int delay)
unsigned char ch;
/* sanity check */
- if (len<=0) return;
+ if (len <= 0) return;
while (l--) {
ch = *(string++);
- outw( RB_Leds | LCD_AFDX | LCD_INITX | LCD_BACKLIGHT | ch, getIocs0Port());
+ outw( RB_Leds | LCD_AFDX | LCD_INITX | RB_BackLight | ch, getIocs0Port());
ndelay(T_AS);
- outw( RB_Leds | LCD_AFDX | LCD_BACKLIGHT | ch, getIocs0Port());
+ outw( RB_Leds | LCD_AFDX | RB_BackLight | ch, getIocs0Port());
// wait for command completion
udelay(delay);
@@ -360,6 +389,7 @@ static int drv_RB_start (const char *section, const int quiet)
{
char *model, *strsize;
int rows=-1, cols=-1, gpos=-1;
+ int l;
model=cfg_get(section, "Model", "HD44780");
if (model!=NULL && *model!='\0') {
@@ -393,6 +423,11 @@ static int drv_RB_start (const char *section, const int quiet)
}
free(strsize);
+ /*set backlight*/
+ if (cfg_number(section, "Backlight", 1, 0, 1, &l) > 0 ) {
+ drv_RB_backlight(l);
+ }
+
if (cfg_number(section, "GPOs", 0, 0, 8, &gpos)<0) return -1;
info ("%s: controlling %d GPO's", Name, gpos);
@@ -443,7 +478,23 @@ static int drv_RB_start (const char *section, const int quiet)
/****************************************/
/*** plugins ***/
/****************************************/
-
+static void plugin_backlight (RESULT *result , const int argc, RESULT *argv[])
+{
+ double backlight;
+
+ switch (argc) {
+ case 0:
+ backlight = drv_RB_backlight(-1);
+ SetResult(&result, R_NUMBER, &backlight);
+ break;
+ case 1:
+ backlight = drv_RB_backlight(R2N(argv[0]));
+ SetResult(&result, R_NUMBER, &backlight);
+ default:
+ error ("%s::backlight(): wrong number of parameters", Name);
+ SetResult(&result, R_STRING, "");
+ }
+}
@@ -532,6 +583,8 @@ int drv_RB_init (const char *section, const int quiet)
wc.draw=drv_generic_text_bar_draw;
widget_register(&wc);
+ /* register plugins*/
+ AddFunction ("LCD::backlight", -1, plugin_backlight);
return 0;
}