[PATCH] Cobalt LCD Driver update

Mostly reformatting to get the sometimes random formatting style of the LCD
driver to something Linux compliant.  Use module_init/exit for module
initialization and cleanup.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/mips/Kconfig

@@ -932,11 +932,6 @@ config AU1000_USB_DEVICE
 	depends on MIPS_PB1500 || MIPS_PB1100 || MIPS_PB1000
 	default n
 
-config COBALT_LCD
-	bool
-	depends on MIPS_COBALT
-	default y
-
 config MIPS_GT96100
 	bool
 	depends on MIPS_EV96100

arch/mips/configs/cobalt_defconfig

@@ -80,7 +80,6 @@ CONFIG_I8259=y
 CONFIG_CPU_LITTLE_ENDIAN=y
 CONFIG_IRQ_CPU=y
 CONFIG_MIPS_GT64111=y
-CONFIG_COBALT_LCD=y
 CONFIG_MIPS_L1_CACHE_SHIFT=5
 # CONFIG_FB is not set
 
@@ -432,6 +431,7 @@ CONFIG_LEGACY_PTY_COUNT=256
 #
 # CONFIG_WATCHDOG is not set
 CONFIG_RTC=y
+CONFIG_COBALT_LCD=y
 # CONFIG_DTLK is not set
 # CONFIG_R3964 is not set
 # CONFIG_APPLICOM is not set

drivers/char/Kconfig

@@ -793,6 +793,13 @@ config EFI_RTC
 	bool "EFI Real Time Clock Services"
 	depends on IA64
 
+config COBALT_LCD
+	bool "Support for Cobalt LCD"
+	depends on MIPS_COBALT
+	help
+	  This option enables support for the LCD display and buttons found
+	  on Cobalt systems through a misc device.
+
 config H8
 	bool "Tadpole ANA H8 Support (OBSOLETE)"
 	depends on OBSOLETE && ALPHA_BOOK1

drivers/char/Makefile

@@ -68,6 +68,7 @@ obj-$(CONFIG_DS1620) += ds1620.o
 obj-$(CONFIG_HW_RANDOM) += hw_random.o
 obj-$(CONFIG_QIC02_TAPE) += tpqic02.o
 obj-$(CONFIG_FTAPE) += ftape/
+obj-$(CONFIG_COBALT_LCD) += lcd.o
 obj-$(CONFIG_H8) += h8.o
 obj-$(CONFIG_PPDEV) += ppdev.o
 obj-$(CONFIG_NWBUTTON) += nwbutton.o

drivers/char/lcd.h

+/*
+ * LED, LCD and Button panel driver for Cobalt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1996, 1997 by Andrew Bose
+ *
+ * Linux kernel version history:
+ *       March 2001: Ported from 2.0.34  by Liam Davies
+ *
+ */
+
+// function headers
+
+static int dqpoll(volatile unsigned long, volatile unsigned char );
+static int timeout(volatile unsigned long);
+
+#define LCD_CHARS_PER_LINE 40
+#define FLASH_SIZE 524288
+#define MAX_IDLE_TIME 120
+
+struct lcd_display {
+        unsigned long buttons;
+        int size1;
+        int size2;
+        unsigned char line1[LCD_CHARS_PER_LINE];
+        unsigned char line2[LCD_CHARS_PER_LINE];
+        unsigned char cursor_address;
+        unsigned char character;
+        unsigned char leds;
+        unsigned char *RomImage;
+};
+
+
+
+#define LCD_DRIVER	"Cobalt LCD Driver v2.10"
+
+#define kLCD_IR		0x0F000000
+#define kLCD_DR		0x0F000010
+#define kGPI		0x0D000000
+#define kLED		0x0C000000
+
+#define kDD_R00         0x00
+#define kDD_R01         0x27
+#define kDD_R10         0x40
+#define kDD_R11         0x67
+
+#define kLCD_Addr       0x00000080
+
+#define LCDTimeoutValue	0xfff
+
+
+// Flash definitions AMD 29F040
+#define kFlashBase	0x0FC00000
+
+#define kFlash_Addr1    0x5555
+#define kFlash_Addr2    0x2AAA
+#define kFlash_Data1    0xAA
+#define kFlash_Data2    0x55
+#define kFlash_Prog     0xA0
+#define kFlash_Erase3   0x80
+#define kFlash_Erase6   0x10
+#define kFlash_Read     0xF0
+
+#define kFlash_ID       0x90
+#define kFlash_VenAddr  0x00
+#define kFlash_DevAddr  0x01
+#define kFlash_VenID    0x01
+#define kFlash_DevID    0xA4    // 29F040
+//#define kFlash_DevID  0xAD    // 29F016
+
+
+// Macros
+
+#define LCDWriteData(x)	outl((x << 24), kLCD_DR)
+#define LCDWriteInst(x)	outl((x << 24), kLCD_IR)
+
+#define LCDReadData	(inl(kLCD_DR) >> 24)
+#define LCDReadInst	(inl(kLCD_IR) >> 24)
+
+#define GPIRead		(inl(kGPI) >> 24)
+
+#define LEDSet(x)	outb((char)x, kLED)
+
+#define WRITE_GAL(x,y)	outl(y, 0x04000000 | (x))
+#define BusyCheck()	while ((LCDReadInst & 0x80) == 0x80)
+
+#define WRITE_FLASH(x,y) outb((char)y, kFlashBase | (x))
+#define READ_FLASH(x)	(inb(kFlashBase | (x)))
+
+
+
+/*
+ * Function command codes for io_ctl.
+ */
+#define LCD_On			1
+#define LCD_Off			2
+#define LCD_Clear		3
+#define LCD_Reset		4
+#define LCD_Cursor_Left		5
+#define LCD_Cursor_Right	6
+#define LCD_Disp_Left		7
+#define LCD_Disp_Right		8
+#define LCD_Get_Cursor		9
+#define LCD_Set_Cursor		10
+#define LCD_Home		11
+#define LCD_Read		12
+#define LCD_Write		13
+#define LCD_Cursor_Off		14
+#define LCD_Cursor_On		15
+#define LCD_Get_Cursor_Pos	16
+#define LCD_Set_Cursor_Pos	17
+#define LCD_Blink_Off           18
+
+#define LED_Set			40
+#define LED_Bit_Set		41
+#define LED_Bit_Clear		42
+
+
+//  Button defs
+#define BUTTON_Read             50
+
+//  Flash command codes
+#define FLASH_Erase		60
+#define FLASH_Burn		61
+#define FLASH_Read		62
+
+
+// Ethernet LINK check hackaroo
+#define LINK_Check              90
+#define LINK_Check_2		91
+
+//  Button patterns  _B - single layer lcd boards
+
+#define BUTTON_NONE               0x3F
+#define BUTTON_NONE_B             0xFE
+
+#define BUTTON_Left               0x3B
+#define BUTTON_Left_B             0xFA
+
+#define BUTTON_Right              0x37
+#define BUTTON_Right_B            0xDE
+
+#define BUTTON_Up                 0x2F
+#define BUTTON_Up_B               0xF6
+
+#define BUTTON_Down               0x1F
+#define BUTTON_Down_B             0xEE
+
+#define BUTTON_Next               0x3D
+#define BUTTON_Next_B             0x7E
+
+#define BUTTON_Enter              0x3E
+#define BUTTON_Enter_B            0xBE
+
+#define BUTTON_Reset_B            0xFC
+
+
+// debounce constants
+
+#define BUTTON_SENSE            160000
+#define BUTTON_DEBOUNCE		5000
+
+
+//  Galileo register stuff
+
+#define kGal_DevBank2Cfg        0x1466DB33
+#define kGal_DevBank2PReg       0x464
+#define kGal_DevBank3Cfg        0x146FDFFB
+#define kGal_DevBank3PReg       0x468
+
+// Network
+
+#define kIPADDR			1
+#define kNETMASK		2
+#define kGATEWAY		3
+#define kDNS			4
+
+#define kClassA			5
+#define kClassB			6
+#define kClassC			7
+