How to get framebuffer output on x50V

Hi everyone

The guy who has got framebuffer output on x50V told me some details today :)

To make you kernel image support x50v framebuffer, use the attached
file to replace your aximx30_lcd.c and then recompile you kernel, you
should get some thing on the LCD.

NOTE: Set your x50v to mirror mode under WINCE before loading the
kernel image.

Fisherss

/*
 * LCD driver for Dell Axim X30
 *
 * Authors: Giuseppe Zompatori <giuseppe_zompatori_at_yahoo.it>
 *
 * based on previous work, see below:
 *
 * Machine initialization for Dell Axim X3
 *
 * Authors: Andrew Zabolotny <zap_at_homelink.ru>
 *
 * For now this is mostly a placeholder file; since I don't own an Axim X3
 * it is supposed the project to be overtaken by somebody else. The code
 * in here is *supposed* to work so that you can at least boot to the command
 * line, but there is no guarantee.
 *
 * 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.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/notifier.h>
#include <linux/lcd.h>
#include <linux/backlight.h>
#include <linux/err.h>

#include <asm/arch/aximx3-init.h>
#include <asm/arch/aximx3-gpio.h>
#include <linux/fb.h>
#include <asm/mach-types.h>
#include "asm/arch/pxa-regs.h"
#include "asm/arch/pxafb.h"

static int aximx30_lcd_set_power (struct lcd_device *lm, int setp)
{
        return 0;
}

static int aximx30_lcd_get_power (struct lcd_device *lm)
{
        return 0;
}

static struct pxafb_mach_info aximx30_fb_info =
{
        .pixclock = 0, // --
        .bpp = 16, // ??
        .xres = 480, // PPL + 1
        .yres = 640, // LPP + 1
        .hsync_len = 64, // HSW + 1
        .vsync_len = 5, // VSW + 1
        .left_margin = 17, // BLW + 1
        .upper_margin = 1, // BFW
        .right_margin = 87, // ELW + 1
        .lower_margin = 4, // EFW
        .sync = 0, // --
        .lccr0 = 0x01b008f9, // yes that's ugly, but it's due a limitation of the
        .lccr3 = 0x04f00001 // pxafb driver assuming pxa25x fbs...
};

struct lcd_properties aximx30_lcd_properties =
{
        .owner = THIS_MODULE,
        .set_power = aximx30_lcd_set_power,
        .get_power = aximx30_lcd_get_power,
        /* @@ more here @@ */
};

static int aximx30_backlight_set_power (struct backlight_device *bm, int on)
{
        return 0;
}

static int aximx30_backlight_get_power (struct backlight_device *bm)
{
        return 0;
}

static struct backlight_properties aximx30_backlight_properties =
{
        .owner = THIS_MODULE,
        .set_power = aximx30_backlight_set_power,
        .get_power = aximx30_backlight_get_power,
};

static struct lcd_device *pxafb_lcd_device;
static struct backlight_device *pxafb_backlight_device;

static int __init
aximx30_lcd_init (void)
{
// if (! machine_is_x30 ())
// return -ENODEV;

        set_pxa_fb_info(&aximx30_fb_info);
        pxafb_lcd_device = lcd_device_register("pxafb", NULL, &aximx30_lcd_properties);
// if (IS_ERR (pxafb_lcd_device))
// return PTR_ERR (pxafb_lcd_device);
        pxafb_backlight_device = backlight_device_register("pxafb", NULL,
                &aximx30_backlight_properties);
// if (IS_ERR (pxafb_backlight_device)) {
// lcd_device_unregister (pxafb_lcd_device);
// return PTR_ERR (pxafb_backlight_device);
// }

        return 0;
}

static void __exit
aximx30_lcd_exit (void)
{
        lcd_device_unregister (pxafb_lcd_device);
        backlight_device_unregister (pxafb_backlight_device);
}

module_init (aximx30_lcd_init);
module_exit (aximx30_lcd_exit);

MODULE_AUTHOR("Giuseppe Zompatori <giuseppe_zompatori_at_yahoo.it>");
MODULE_DESCRIPTION("Dell Axim X30 Core frambuffer driver");
MODULE_LICENSE("GPL");
Received on Tue Nov 22 2005 - 09:02:56 EST