arch/arm/mach-pxa/rover/roverp1_lcd.c

   1 /*
   2  *  linux/arch/arm/mach-pxa/roverp1_lcd.c
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License version 2 as
   6  *  published by the Free Software Foundation.
   7  *
   8  *  Copyright (c) 2003 Adam Turowski
   9  *  Copyright(C) 2004 Vitaliy Sardyko
  10  *  Copyright(C) 2004 Konstantine A Beklemishev
  11  *
  12  *  2003-12-03: Adam Turowski
  13  *              initial code.
  14  *  2004-11-07: Vitaliy Sardyko
  15  *              updated to 2.6.7
  16  *  2005-01-10: Konstantine A Beklemishev
  17  *              adapted for RoverPC P1 (MitacMio336)
  18  */
  19
  20 #include <linux/module.h>
  21 #include <linux/init.h>
  22 #include <linux/notifier.h>
  23 #include <linux/lcd.h>
  24 #include <linux/backlight.h>
  25
  26 /* #include <asm/arch/roverp1-init.h>
  27  * #include <asm/arch/roverp1-gpio.h> */
  28 #include <linux/fb.h>
  29 #include <asm/arch/pxafb.h>
  30
  31 #define DEBUG 1
  32
  33
  34
  35 #if DEBUG
  36 #  define DPRINTK(fmt, args...) printk("%s: " fmt, __FUNCTION__ , ## args)
  37 #else
  38 #  define DPRINTK(fmt, args...)
  39 #endif
  40
  41
  42 static int roverp1_lcd_set_power (struct lcd_device *lm, int setp)
  43 {
  44         return 0;
  45 }
  46
  47 static int roverp1_lcd_get_power (struct lcd_device *lm)
  48 {
  49         return 0;
  50 }
  51 struct lcd_properties roverp1_lcd_properties =
  52 {
  53         .owner = THIS_MODULE,
  54         .set_power = roverp1_lcd_set_power,
  55         .get_power = roverp1_lcd_get_power,
  56 };
  57
  58 static void roverp1_backlight_power(int on)
  59 {
  60 }
  61
  62
  63 static struct pxafb_mach_info roverp1_fb_info  = {
  64         .pixclock   =   156551,
  65         .bpp        =   16,
  66         .xres       =   240,
  67         .yres       =   320,
  68         .hsync_len  =   24,
  69         .vsync_len  =   2,
  70         .left_margin=   20,
  71         .upper_margin = 5,
  72         .right_margin = 12,
  73         .lower_margin = 5,
  74         .sync       =   FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
  75         .lccr0 = 0x003008f0,
  76         .lccr3 = 0x04400008,
  77         .pxafb_backlight_power  = roverp1_backlight_power
  78 };
  79
  80 static int roverp1_backlight_set_power (struct backlight_device *bm, int on)
  81 {
  82         return 0;
  83 }
  84
  85 static int roverp1_backlight_get_power (struct backlight_device *bm)
  86 {
  87         return 0;
  88 }
  89
  90 static struct backlight_properties roverp1_backlight_properties =
  91 {
  92         .owner         = THIS_MODULE,
  93         .set_power     = roverp1_backlight_set_power,
  94         .get_power     = roverp1_backlight_get_power,
  95 };
  96
  97 static struct lcd_device *pxafb_lcd_device;
  98 static struct backlight_device *pxafb_backlight_device;
  99
 100 int  roverp1_lcd_init (void)
 101 {
 102         set_pxa_fb_info (&roverp1_fb_info);
 103
 104         pxafb_lcd_device = lcd_device_register("pxafb", NULL, &roverp1_lcd_properties);
 105         if (IS_ERR (pxafb_lcd_device))
 106         {
 107                 DPRINTK(" LCD device doesn't registered, booting failed !\n");
 108                 return IS_ERR (pxafb_lcd_device);
 109         }
 110
 111         pxafb_backlight_device = backlight_device_register("pxafb", NULL, &roverp1_backlight_properties);
 112
 113         return IS_ERR (pxafb_backlight_device);
 114 }
 115
 116
 117 static void roverp1_lcd_exit (void)
 118 {
 119         lcd_device_unregister (pxafb_lcd_device);
 120         backlight_device_unregister (pxafb_backlight_device);
 121 }
 122
 123 module_init(roverp1_lcd_init);
 124 module_exit(roverp1_lcd_exit);
 125
 126 MODULE_AUTHOR("Adam Turowski, Konstantine A Beklemishev");
 127 MODULE_DESCRIPTION("LCD driver for RoverPC P1 (MitacMio336)");
 128 MODULE_LICENSE("GPL");