lcd/Kconfig, Make.defs: Remove dependency of CONFIG_LCD_NXDRIVER for building non-graphic, SLCD drivers.

configs/sabre-6quad/README.txt

@@ -555,7 +555,10 @@ Open Issues:
                                    PMD_SECT_DOM(0) | PMD_SECT_XN)
      #define MMU_STRONGLY_ORDERED (PMD_TYPE_SECT | PMD_SECT_AP_RW1 | \
 
-3. Assertions.  On a fatal assertions, other CPUs need to be stopped.
+3. Assertions.  On a fatal assertions, other CPUs need to be stopped.  The SCR,
+   however, only supports disabling CPUs 1 through 3.  Perhaps if the assertion
+   occurs on CPUn, n > 0, then it should use and SGI to perform the assertion
+   on CPU0 always.  From CPU0, CPU1-3 can be disabled.
 
 4. Caching probabaly interferes with spinlocks as they are currently implemented.
    Waiting on a cached copy of the spinlock may result in a hang or a failure to

drivers/Kconfig

@@ -373,22 +373,7 @@ if IOEXPANDER
 source drivers/ioexpander/Kconfig
 endif # IOEXPANDER
 
-menuconfig LCD
-	bool "LCD Driver Support"
-	default n
-	select NX_LCDDRIVER if NX
-	---help---
-		Drivers for parallel and serial LCD and OLED type devices.  These
-		drivers support interfaces as defined in include/nuttx/lcd/lcd.h
-
-		This selection is necessary to enable support for LCD drivers in
-		drivers/lcd as well as for board-specific LCD drivers in the configs/
-		subdirectories.
-
-if LCD
 source drivers/lcd/Kconfig
-endif # LCD
-
 source drivers/leds/Kconfig
 
 menuconfig MMCSD

drivers/lcd/Kconfig

@@ -3,7 +3,23 @@
 # see the file kconfig-language.txt in the NuttX tools repository.
 #
 
-comment "Common LCD Settings"
+menu "LCD Driver Support"
+
+menuconfig LCD
+	bool "Graphic LCD Driver Support"
+	default n
+	select NX_LCDDRIVER if NX
+	---help---
+		Drivers for parallel and serial LCD and OLED type devices.  These
+		drivers support interfaces as defined in include/nuttx/lcd/lcd.h
+
+		This selection is necessary to enable support for LCD drivers in
+		drivers/lcd as well as for board-specific LCD drivers in the configs/
+		subdirectories.
+
+if LCD
+
+comment "Common Graphipc LCD Settings"
 
 config LCD_CONSOLE
 	bool "LCD console output"
@@ -990,8 +1006,21 @@ config LCD_RA8875_EXTENDED
 		driver anyway.
 
 endif # LCD_RA8875
+endif # LCD
 
-comment "Alphanumeric/Segment LCD Devices"
+menuconfig SLCD
+	bool "Alphanumeric/Segment LCD Devices"
+	default n
+	---help---
+		Drivers for Alphanumeric ans Segment LCDs (SLCDs).  These
+		drivers support interfaces as defined in include/nuttx/lcd/slcd_ioctl.h
+		amd slcd_codec.h
+
+		This selection is necessary to enable support for SLCD drivers in
+		drivers/lcd as well as for board-specific LCD drivers in the configs/
+		subdirectories.
+
+if SLCD
 
 config LCD_LCD1602
 	bool "LCD 1602"
@@ -1018,3 +1047,6 @@ config LCD_BACKPACK
 		This driver supports known and unknown variants.
 
 		See pcf8574_lcd_backpack_readme.txt
+
+endif # SLCD
+endmenu # LCD Driver Support

drivers/lcd/Make.defs

@@ -37,7 +37,7 @@
 
 ifeq ($(CONFIG_NX_LCDDRIVER),y)
 
-# Include LCD drivers
+# Include Graphics LCD drivers
 
 ifeq ($(CONFIG_LCD_P14201),y)
   CSRCS += p14201.c
@@ -103,6 +103,22 @@ ifeq ($(CONFIG_LCD_RA8875),y)
   CSRCS += ra8875.c
 endif
 
+# Include Alphanumeric/Segment LCD drivers too
+
+ifeq ($(CONFIG_LCD_BACKPACK),y)
+  CSRCS += pcf8574_lcd_backpack.c
+endif
+
+# Include LCD driver build support
+
+DEPPATH += --dep-path lcd
+VPATH += :lcd
+CFLAGS += ${shell $(INCDIR) $(INCDIROPT) "$(CC)" $(TOPDIR)$(DELIM)drivers$(DELIM)lcd}
+
+else ifeq ($(CONFIG_SLCD),y)
+
+# Include Alphanumeric/Segment LCD drivers only
+
 ifeq ($(CONFIG_LCD_BACKPACK),y)
   CSRCS += pcf8574_lcd_backpack.c
 endif
@@ -113,4 +129,3 @@ DEPPATH += --dep-path lcd
 VPATH += :lcd
 CFLAGS += ${shell $(INCDIR) $(INCDIROPT) "$(CC)" $(TOPDIR)$(DELIM)drivers$(DELIM)lcd}
 endif
-