arch/arm/mach-pxa/palmld/palmld.c

   1 /*
   2  * linux/arch/arm/mach-pxa/palm/palm.c
   3  *
   4  *  Support for the Intel XScale based Palm PDAs. Only the LifeDrive is
   5  *  supported at the moment.
   6  *
   7  *  Author: Alex Osborne <bobofdoom@gmail.com>
   8  *
   9  *  USB stubs based on aximx30.c (Michael Opdenacker)
  10  *
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/device.h>
  16 #include <linux/fb.h>
  17
  18 #include <asm/mach-types.h>
  19 #include <asm/mach/arch.h>
  20
  21 #include <asm/arch/hardware.h>
  22 #include <asm/arch/pxafb.h>
  23 #include <asm/arch/pxa-regs.h>
  24 #include <asm/arch/udc.h>
  25 #include <asm/arch/palmld-gpio.h>
  26
  27 #include "../generic.h"
  28
  29 static void palm_backlight_power(int on)
  30 {
  31         /**
  32           * TODO: check which particular PWM controls the backlight on the LifeDrive
  33           * and enable and disable it here. It's PWM1 on the Tungsten T3. Quite
  34           * likely to be the same.
  35           */
  36 }
  37
  38
  39 /* USB Device Controller */
  40
  41 static int udc_is_connected(void)
  42 {
  43         return GPLR(GPIO_PALMLD_USB_DETECT) & GPIO_bit(GPIO_PALMLD_USB_DETECT);
  44 }
  45
  46 static void udc_enable(int cmd)
  47 {
  48         /**
  49           * TODO: find the GPIO line which powers up the USB.
  50           */
  51         switch (cmd)
  52         {
  53                 case PXA2XX_UDC_CMD_DISCONNECT:
  54                         printk (KERN_NOTICE "USB cmd disconnect\n");
  55                         /* SET_X30_GPIO(USB_PUEN, 0); */
  56                         break;
  57
  58                 case PXA2XX_UDC_CMD_CONNECT:
  59                         printk (KERN_NOTICE "USB cmd connect\n");
  60                         /* SET_X30_GPIO(USB_PUEN, 1); */
  61                         break;
  62         }
  63 }
  64 static struct pxa2xx_udc_mach_info palmld_udc_mach_info = {
  65         .udc_is_connected = udc_is_connected,
  66         .udc_command      = udc_enable,
  67 };
  68
  69
  70 static struct pxafb_mach_info palmld_lcd __initdata = {
  71         /* pixclock is set by lccr3 below */
  72         .pixclock               = 0,
  73         .xres                   = 320,
  74         .yres                   = 480,
  75         .bpp                    = 16,
  76         .hsync_len              = 4,
  77         .vsync_len              = 1,
  78
  79         /* fixme: these are the margins PalmOS has set,
  80           *        they seem to work but could be better.
  81           */
  82         .left_margin            = 31,
  83         .right_margin           = 3,
  84         .upper_margin           = 7, //5,
  85         .lower_margin           = 8, //3,
  86
  87         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
  88
  89         /* fixme: this is a hack, use constants instead. */
  90         .lccr0                  = 0x7b008f8,
  91         .lccr3                  = 0x4700004,
  92
  93         .pxafb_backlight_power  = palm_backlight_power,
  94 };
  95
  96 static void __init palmld_init(void)
  97 {
  98         set_pxa_fb_info( &palmld_lcd );
  99         pxa_set_udc_info( &palmld_udc_mach_info );
 100 }
 101
 102 MACHINE_START(XSCALE_PALMLD, "Palm LifeDrive")
 103         .phys_ram       = 0xa0000000,
 104         .phys_io        = 0x40000000,
 105         .io_pg_offst    = io_p2v(0x40000000),
 106         .boot_params    = 0xa0000100,
 107         .map_io         = pxa_map_io,
 108         .init_irq       = pxa_init_irq,
 109         .timer          = &pxa_timer,
 110         .init_machine   = palmld_init,
 111 MACHINE_END
 112