1 files changed, 695 insertions, 0 deletions

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
new file mode 100644
index 000000000000..8fe1c12a17bd
--- /dev/null
+++ b/drivers/video/imxfb.c
@@ -0,0 +1,695 @@
+/*
+ *  linux/drivers/video/imxfb.c
+ *
+ *  Freescale i.MX Frame Buffer device driver
+ *
+ *  Copyright (C) 2004 Sascha Hauer, Pengutronix
+ *   Based on acornfb.c Copyright (C) Russell King.
+ *
+ * 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.
+ *
+ * Please direct your questions and comments on this driver to the following
+ * email address:
+ *
+ *      linux-arm-kernel@lists.arm.linux.org.uk
+ */
+
+//#define DEBUG 1
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/cpufreq.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/mach-types.h>
+#include <asm/uaccess.h>
+#include <asm/arch/imxfb.h>
+
+/*
+ * Complain if VAR is out of range.
+ */
+#define DEBUG_VAR 1
+
+#include "imxfb.h"
+
+static struct imxfb_rgb def_rgb_16 = {
+        .red    = { .offset = 8,  .length = 4, },
+        .green  = { .offset = 4,  .length = 4, },
+        .blue   = { .offset = 0,  .length = 4, },
+        .transp = { .offset = 0,  .length = 0, },
+};
+
+static struct imxfb_rgb def_rgb_8 = {
+        .red    = { .offset = 0,  .length = 8, },
+        .green  = { .offset = 0,  .length = 8, },
+        .blue   = { .offset = 0,  .length = 8, },
+        .transp = { .offset = 0,  .length = 0, },
+};
+
+static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *info);
+
+static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
+{
+        chan &= 0xffff;
+        chan >>= 16 - bf->length;
+        return chan << bf->offset;
+}
+
+#define LCDC_PALETTE(x) __REG2(IMX_LCDC_BASE+0x800, (x)<<2)
+static int
+imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
+                       u_int trans, struct fb_info *info)
+{
+        struct imxfb_info *fbi = info->par;
+        u_int val, ret = 1;
+
+#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
+        if (regno < fbi->palette_size) {
+                val = (CNVT_TOHW(red, 4) << 8) |
+                      (CNVT_TOHW(green,4) << 4) |
+                      CNVT_TOHW(blue,  4);
+
+                LCDC_PALETTE(regno) = val;
+                ret = 0;
+        }
+        return ret;
+}
+
+static int
+imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+                   u_int trans, struct fb_info *info)
+{
+        struct imxfb_info *fbi = info->par;
+        unsigned int val;
+        int ret = 1;
+
+        /*
+         * If inverse mode was selected, invert all the colours
+         * rather than the register number.  The register number
+         * is what you poke into the framebuffer to produce the
+         * colour you requested.
+         */
+        if (fbi->cmap_inverse) {
+                red   = 0xffff - red;
+                green = 0xffff - green;
+                blue  = 0xffff - blue;
+        }
+
+        /*
+         * If greyscale is true, then we convert the RGB value
+         * to greyscale no mater what visual we are using.
+         */
+        if (info->var.grayscale)
+                red = green = blue = (19595 * red + 38470 * green +
+                                        7471 * blue) >> 16;
+
+        switch (info->fix.visual) {
+        case FB_VISUAL_TRUECOLOR:
+                /*
+                 * 12 or 16-bit True Colour.  We encode the RGB value
+                 * according to the RGB bitfield information.
+                 */
+                if (regno < 16) {
+                        u32 *pal = info->pseudo_palette;
+
+                        val  = chan_to_field(red, &info->var.red);
+                        val |= chan_to_field(green, &info->var.green);
+                        val |= chan_to_field(blue, &info->var.blue);
+
+                        pal[regno] = val;
+                        ret = 0;
+                }
+                break;
+
+        case FB_VISUAL_STATIC_PSEUDOCOLOR:
+        case FB_VISUAL_PSEUDOCOLOR:
+                ret = imxfb_setpalettereg(regno, red, green, blue, trans, info);
+                break;
+        }
+
+        return ret;
+}
+
+/*
+ *  imxfb_check_var():
+ *    Round up in the following order: bits_per_pixel, xres,
+ *    yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale,
+ *    bitfields, horizontal timing, vertical timing.
+ */
+static int
+imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+        struct imxfb_info *fbi = info->par;
+        int rgbidx;
+
+        if (var->xres < MIN_XRES)
+                var->xres = MIN_XRES;
+        if (var->yres < MIN_YRES)
+                var->yres = MIN_YRES;
+        if (var->xres > fbi->max_xres)
+                var->xres = fbi->max_xres;
+        if (var->yres > fbi->max_yres)
+                var->yres = fbi->max_yres;
+        var->xres_virtual = max(var->xres_virtual, var->xres);
+        var->yres_virtual = max(var->yres_virtual, var->yres);
+
+        pr_debug("var->bits_per_pixel=%d\n", var->bits_per_pixel);
+        switch (var->bits_per_pixel) {
+        case 16:
+                rgbidx = RGB_16;
+                break;
+        case 8:
+                rgbidx = RGB_8;
+                break;
+        default:
+                rgbidx = RGB_16;
+        }
+
+        /*
+         * Copy the RGB parameters for this display
+         * from the machine specific parameters.
+         */
+        var->red    = fbi->rgb[rgbidx]->red;
+        var->green  = fbi->rgb[rgbidx]->green;
+        var->blue   = fbi->rgb[rgbidx]->blue;
+        var->transp = fbi->rgb[rgbidx]->transp;
+
+        pr_debug("RGBT length = %d:%d:%d:%d\n",
+                var->red.length, var->green.length, var->blue.length,
+                var->transp.length);
+
+        pr_debug("RGBT offset = %d:%d:%d:%d\n",
+                var->red.offset, var->green.offset, var->blue.offset,
+                var->transp.offset);
+
+        return 0;
+}
+
+/*
+ * imxfb_set_par():
+ *      Set the user defined part of the display for the specified console
+ */
+static int imxfb_set_par(struct fb_info *info)
+{
+        struct imxfb_info *fbi = info->par;
+        struct fb_var_screeninfo *var = &info->var;
+
+        pr_debug("set_par\n");
+
+        if (var->bits_per_pixel == 16)
+                info->fix.visual = FB_VISUAL_TRUECOLOR;
+        else if (!fbi->cmap_static)
+                info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+        else {
+                /*
+                 * Some people have weird ideas about wanting static
+                 * pseudocolor maps.  I suspect their user space
+                 * applications are broken.
+                 */
+                info->fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR;
+        }
+
+        info->fix.line_length = var->xres_virtual *
+                                  var->bits_per_pixel / 8;
+        fbi->palette_size = var->bits_per_pixel == 8 ? 256 : 16;
+
+        imxfb_activate_var(var, info);
+
+        return 0;
+}
+
+static void imxfb_enable_controller(struct imxfb_info *fbi)
+{
+        pr_debug("Enabling LCD controller\n");
+
+        /* initialize LCDC */
+        LCDC_RMCR &= ~RMCR_LCDC_EN;             /* just to be safe... */
+
+        LCDC_SSA        = fbi->screen_dma;
+        /* physical screen start address            */
+        LCDC_VPW        = VPW_VPW(fbi->max_xres * fbi->max_bpp / 8 / 4);
+
+        LCDC_POS        = 0x00000000;   /* panning offset 0 (0 pixel offset)        */
+
+        /* disable hardware cursor */
+        LCDC_CPOS       &= ~(CPOS_CC0 | CPOS_CC1);
+
+        /* fixed burst length (see erratum 11) */
+        LCDC_DMACR = DMACR_BURST | DMACR_HM(8) | DMACR_TM(2);
+
+        LCDC_RMCR = RMCR_LCDC_EN;
+
+        if(fbi->backlight_power)
+                fbi->backlight_power(1);
+        if(fbi->lcd_power)
+                fbi->lcd_power(1);
+}
+
+static void imxfb_disable_controller(struct imxfb_info *fbi)
+{
+        pr_debug("Disabling LCD controller\n");
+
+        if(fbi->backlight_power)
+                fbi->backlight_power(0);
+        if(fbi->lcd_power)
+                fbi->lcd_power(0);
+
+        LCDC_RMCR = 0;
+}
+
+static int imxfb_blank(int blank, struct fb_info *info)
+{
+        struct imxfb_info *fbi = info->par;
+
+        pr_debug("imxfb_blank: blank=%d\n", blank);
+
+        switch (blank) {
+        case FB_BLANK_POWERDOWN:
+        case FB_BLANK_VSYNC_SUSPEND:
+        case FB_BLANK_HSYNC_SUSPEND:
+        case FB_BLANK_NORMAL:
+                imxfb_disable_controller(fbi);
+                break;
+
+        case FB_BLANK_UNBLANK:
+                imxfb_enable_controller(fbi);
+                break;
+        }
+        return 0;
+}
+
+static struct fb_ops imxfb_ops = {
+        .owner          = THIS_MODULE,
+        .fb_check_var   = imxfb_check_var,
+        .fb_set_par     = imxfb_set_par,
+        .fb_setcolreg   = imxfb_setcolreg,
+        .fb_fillrect    = cfb_fillrect,
+        .fb_copyarea    = cfb_copyarea,
+        .fb_imageblit   = cfb_imageblit,
+        .fb_blank       = imxfb_blank,
+        .fb_cursor      = soft_cursor, /* FIXME: i.MX can do hardware cursor */
+};
+
+/*
+ * imxfb_activate_var():
+ *      Configures LCD Controller based on entries in var parameter.  Settings are
+ *      only written to the controller if changes were made.
+ */
+static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+        struct imxfb_info *fbi = info->par;
+        pr_debug("var: xres=%d hslen=%d lm=%d rm=%d\n",
+                var->xres, var->hsync_len,
+                var->left_margin, var->right_margin);
+        pr_debug("var: yres=%d vslen=%d um=%d bm=%d\n",
+                var->yres, var->vsync_len,
+                var->upper_margin, var->lower_margin);
+
+#if DEBUG_VAR
+        if (var->xres < 16        || var->xres > 1024)
+                printk(KERN_ERR "%s: invalid xres %d\n",
+                        info->fix.id, var->xres);
+        if (var->hsync_len < 1    || var->hsync_len > 64)
+                printk(KERN_ERR "%s: invalid hsync_len %d\n",
+                        info->fix.id, var->hsync_len);
+        if (var->left_margin > 255)
+                printk(KERN_ERR "%s: invalid left_margin %d\n",
+                        info->fix.id, var->left_margin);
+        if (var->right_margin > 255)
+                printk(KERN_ERR "%s: invalid right_margin %d\n",
+                        info->fix.id, var->right_margin);
+        if (var->yres < 1 || var->yres > 511)
+                printk(KERN_ERR "%s: invalid yres %d\n",
+                        info->fix.id, var->yres);
+        if (var->vsync_len > 100)
+                printk(KERN_ERR "%s: invalid vsync_len %d\n",
+                        info->fix.id, var->vsync_len);
+        if (var->upper_margin > 63)
+                printk(KERN_ERR "%s: invalid upper_margin %d\n",
+                        info->fix.id, var->upper_margin);
+        if (var->lower_margin > 255)
+                printk(KERN_ERR "%s: invalid lower_margin %d\n",
+                        info->fix.id, var->lower_margin);
+#endif
+
+        LCDC_HCR        = HCR_H_WIDTH(var->hsync_len) |
+                          HCR_H_WAIT_1(var->left_margin) |
+                          HCR_H_WAIT_2(var->right_margin);
+
+        LCDC_VCR        = VCR_V_WIDTH(var->vsync_len) |
+                          VCR_V_WAIT_1(var->upper_margin) |
+                          VCR_V_WAIT_2(var->lower_margin);
+
+        LCDC_SIZE       = SIZE_XMAX(var->xres) | SIZE_YMAX(var->yres);
+        LCDC_PCR        = fbi->pcr;
+        LCDC_PWMR       = fbi->pwmr;
+        LCDC_LSCR1      = fbi->lscr1;
+
+        return 0;
+}
+
+static void imxfb_setup_gpio(struct imxfb_info *fbi)
+{
+        int width;
+
+        LCDC_RMCR       &= ~(RMCR_LCDC_EN | RMCR_SELF_REF);
+
+        if( fbi->pcr & PCR_TFT )
+                width = 16;
+        else
+                width = 1 << ((fbi->pcr >> 28) & 0x3);
+
+        switch(width) {
+        case 16:
+                imx_gpio_mode(PD30_PF_LD15);
+                imx_gpio_mode(PD29_PF_LD14);
+                imx_gpio_mode(PD28_PF_LD13);
+                imx_gpio_mode(PD27_PF_LD12);
+                imx_gpio_mode(PD26_PF_LD11);
+                imx_gpio_mode(PD25_PF_LD10);
+                imx_gpio_mode(PD24_PF_LD9);
+                imx_gpio_mode(PD23_PF_LD8);
+        case 8:
+                imx_gpio_mode(PD22_PF_LD7);
+                imx_gpio_mode(PD21_PF_LD6);
+                imx_gpio_mode(PD20_PF_LD5);
+                imx_gpio_mode(PD19_PF_LD4);
+        case 4:
+                imx_gpio_mode(PD18_PF_LD3);
+                imx_gpio_mode(PD17_PF_LD2);
+        case 2:
+                imx_gpio_mode(PD16_PF_LD1);
+        case 1:
+                imx_gpio_mode(PD15_PF_LD0);
+        }
+
+        /* initialize GPIOs */
+        imx_gpio_mode(PD6_PF_LSCLK);
+        imx_gpio_mode(PD10_PF_SPL_SPR);
+        imx_gpio_mode(PD11_PF_CONTRAST);
+        imx_gpio_mode(PD14_PF_FLM_VSYNC);
+        imx_gpio_mode(PD13_PF_LP_HSYNC);
+        imx_gpio_mode(PD7_PF_REV);
+        imx_gpio_mode(PD8_PF_CLS);
+
+#ifndef CONFIG_MACH_PIMX1
+        /* on PiMX1 used as buffers enable signal
+         */
+        imx_gpio_mode(PD9_PF_PS);
+#endif
+
+#ifndef CONFIG_MACH_MX1FS2
+        /* on mx1fs2 this pin is used to (de)activate the display, so we need
+         * it as a normal gpio
+         */
+        imx_gpio_mode(PD12_PF_ACD_OE);
+#endif
+
+}
+
+#ifdef CONFIG_PM
+/*
+ * Power management hooks.  Note that we won't be called from IRQ context,
+ * unlike the blank functions above, so we may sleep.
+ */
+static int imxfb_suspend(struct device *dev, u32 state, u32 level)
+{
+        struct imxfb_info *fbi = dev_get_drvdata(dev);
+        pr_debug("%s\n",__FUNCTION__);
+
+        if (level == SUSPEND_DISABLE || level == SUSPEND_POWER_DOWN)
+                imxfb_disable_controller(fbi);
+        return 0;
+}
+
+static int imxfb_resume(struct device *dev, u32 level)
+{
+        struct imxfb_info *fbi = dev_get_drvdata(dev);
+        pr_debug("%s\n",__FUNCTION__);
+
+        if (level == RESUME_ENABLE)
+                imxfb_enable_controller(fbi);
+        return 0;
+}
+#else
+#define imxfb_suspend   NULL
+#define imxfb_resume    NULL
+#endif
+
+static int __init imxfb_init_fbinfo(struct device *dev)
+{
+        struct imxfb_mach_info *inf = dev->platform_data;
+        struct fb_info *info = dev_get_drvdata(dev);
+        struct imxfb_info *fbi = info->par;
+
+        pr_debug("%s\n",__FUNCTION__);
+
+        info->pseudo_palette = kmalloc( sizeof(u32) * 16, GFP_KERNEL);
+        if (!info->pseudo_palette)
+                return -ENOMEM;
+
+        memset(fbi, 0, sizeof(struct imxfb_info));
+        fbi->dev = dev;
+
+        strlcpy(info->fix.id, IMX_NAME, sizeof(info->fix.id));
+
+        info->fix.type  = FB_TYPE_PACKED_PIXELS;
+        info->fix.type_aux              = 0;
+        info->fix.xpanstep              = 0;
+        info->fix.ypanstep              = 0;
+        info->fix.ywrapstep             = 0;
+        info->fix.accel = FB_ACCEL_NONE;
+
+        info->var.nonstd                = 0;
+        info->var.activate              = FB_ACTIVATE_NOW;
+        info->var.height                = -1;
+        info->var.width = -1;
+        info->var.accel_flags           = 0;
+        info->var.vmode = FB_VMODE_NONINTERLACED;
+
+        info->fbops                     = &imxfb_ops;
+        info->flags                     = FBINFO_FLAG_DEFAULT;
+        info->pseudo_palette            = (fbi + 1);
+
+        fbi->rgb[RGB_16]                = &def_rgb_16;
+        fbi->rgb[RGB_8]                 = &def_rgb_8;
+
+        fbi->max_xres                   = inf->xres;
+        info->var.xres                  = inf->xres;
+        info->var.xres_virtual          = inf->xres;
+        fbi->max_yres                   = inf->yres;
+        info->var.yres                  = inf->yres;
+        info->var.yres_virtual          = inf->yres;
+        fbi->max_bpp                    = inf->bpp;
+        info->var.bits_per_pixel        = inf->bpp;
+        info->var.pixclock              = inf->pixclock;
+        info->var.hsync_len             = inf->hsync_len;
+        info->var.left_margin           = inf->left_margin;
+        info->var.right_margin          = inf->right_margin;
+        info->var.vsync_len             = inf->vsync_len;
+        info->var.upper_margin          = inf->upper_margin;
+        info->var.lower_margin          = inf->lower_margin;
+        info->var.sync                  = inf->sync;
+        info->var.grayscale             = inf->cmap_greyscale;
+        fbi->cmap_inverse               = inf->cmap_inverse;
+        fbi->pcr                        = inf->pcr;
+        fbi->lscr1                      = inf->lscr1;
+        fbi->pwmr                       = inf->pwmr;
+        fbi->lcd_power                  = inf->lcd_power;
+        fbi->backlight_power            = inf->backlight_power;
+        info->fix.smem_len              = fbi->max_xres * fbi->max_yres *
+                                          fbi->max_bpp / 8;
+
+        return 0;
+}
+
+/*
+ *      Allocates the DRAM memory for the frame buffer.  This buffer is
+ *      remapped into a non-cached, non-buffered, memory region to
+ *      allow pixel writes to occur without flushing the cache.
+ *      Once this area is remapped, all virtual memory access to the
+ *      video memory should occur at the new region.
+ */
+static int __init imxfb_map_video_memory(struct fb_info *info)
+{
+        struct imxfb_info *fbi = info->par;
+
+        fbi->map_size = PAGE_ALIGN(info->fix.smem_len);
+        fbi->map_cpu = dma_alloc_writecombine(fbi->dev, fbi->map_size,
+                                        &fbi->map_dma,GFP_KERNEL);
+
+        if (fbi->map_cpu) {
+                info->screen_base = fbi->map_cpu;
+                fbi->screen_cpu = fbi->map_cpu;
+                fbi->screen_dma = fbi->map_dma;
+                info->fix.smem_start = fbi->screen_dma;
+        }
+
+        return fbi->map_cpu ? 0 : -ENOMEM;
+}
+
+static int __init imxfb_probe(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct imxfb_info *fbi;
+        struct fb_info *info;
+        struct imxfb_mach_info *inf;
+        struct resource *res;
+        int ret;
+
+        printk("i.MX Framebuffer driver\n");
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if(!res)
+                return -ENODEV;
+
+        inf = dev->platform_data;
+        if(!inf) {
+                dev_err(dev,"No platform_data available\n");
+                return -ENOMEM;
+        }
+
+        info = framebuffer_alloc(sizeof(struct imxfb_info), dev);
+        if(!info)
+                return -ENOMEM;
+
+        fbi = info->par;
+
+        dev_set_drvdata(dev, info);
+
+        ret = imxfb_init_fbinfo(dev);
+        if( ret < 0 )
+                goto failed_init;
+
+        res = request_mem_region(res->start, res->end - res->start + 1, "IMXFB");
+        if (!res) {
+                ret = -EBUSY;
+                goto failed_regs;
+        }
+
+        if (!inf->fixed_screen_cpu) {
+                ret = imxfb_map_video_memory(info);
+                if (ret) {
+                        dev_err(dev, "Failed to allocate video RAM: %d\n", ret);
+                        ret = -ENOMEM;
+                        goto failed_map;
+                }
+        } else {
+                /* Fixed framebuffer mapping enables location of the screen in eSRAM */
+                fbi->map_cpu = inf->fixed_screen_cpu;
+                fbi->map_dma = inf->fixed_screen_dma;
+                info->screen_base = fbi->map_cpu;
+                fbi->screen_cpu = fbi->map_cpu;
+                fbi->screen_dma = fbi->map_dma;
+                info->fix.smem_start = fbi->screen_dma;
+        }
+
+        /*
+         * This makes sure that our colour bitfield
+         * descriptors are correctly initialised.
+         */
+        imxfb_check_var(&info->var, info);
+
+        ret = fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0);
+        if (ret < 0)
+                goto failed_cmap;
+
+        imxfb_setup_gpio(fbi);
+
+        imxfb_set_par(info);
+        ret = register_framebuffer(info);
+        if (ret < 0) {
+                dev_err(dev, "failed to register framebuffer\n");
+                goto failed_register;
+        }
+
+        imxfb_enable_controller(fbi);
+
+        return 0;
+
+failed_register:
+        fb_dealloc_cmap(&info->cmap);
+failed_cmap:
+        if (!inf->fixed_screen_cpu)
+                dma_free_writecombine(dev,fbi->map_size,fbi->map_cpu,
+                           fbi->map_dma);
+failed_map:
+        kfree(info->pseudo_palette);
+failed_regs:
+        release_mem_region(res->start, res->end - res->start);
+failed_init:
+        dev_set_drvdata(dev, NULL);
+        framebuffer_release(info);
+        return ret;
+}
+
+static int imxfb_remove(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct fb_info *info = dev_get_drvdata(dev);
+        struct resource *res;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+        /* disable LCD controller */
+        LCDC_RMCR &= ~RMCR_LCDC_EN;
+
+        unregister_framebuffer(info);
+
+        fb_dealloc_cmap(&info->cmap);
+        kfree(info->pseudo_palette);
+        framebuffer_release(info);
+
+        release_mem_region(res->start, res->end - res->start + 1);
+        dev_set_drvdata(dev, NULL);
+
+        return 0;
+}
+
+void  imxfb_shutdown(struct device * dev)
+{
+        /* disable LCD Controller */
+        LCDC_RMCR &= ~RMCR_LCDC_EN;
+}
+
+static struct device_driver imxfb_driver = {
+        .name           = "imx-fb",
+        .bus            = &platform_bus_type,
+        .probe          = imxfb_probe,
+        .suspend        = imxfb_suspend,
+        .resume         = imxfb_resume,
+        .remove         = imxfb_remove,
+        .shutdown       = imxfb_shutdown,
+};
+
+int __init imxfb_init(void)
+{
+        return driver_register(&imxfb_driver);
+}
+
+static void __exit imxfb_cleanup(void)
+{
+        driver_unregister(&imxfb_driver);
+}
+
+module_init(imxfb_init);
+module_exit(imxfb_cleanup);
+
+MODULE_DESCRIPTION("Motorola i.MX framebuffer driver");
+MODULE_AUTHOR("Sascha Hauer, Pengutronix");
+MODULE_LICENSE("GPL");