1 files changed, 500 insertions, 0 deletions

diff --git a/drivers/video/fbdev/hitfb.c b/drivers/video/fbdev/hitfb.c
new file mode 100644
index 000000000000..a648d5186c6e
--- /dev/null
+++ b/drivers/video/fbdev/hitfb.c
@@ -0,0 +1,500 @@
+/*
+ * linux/drivers/video/hitfb.c -- Hitachi LCD frame buffer device
+ *
+ * (C) 1999 Mihai Spatar
+ * (C) 2000 YAEGASHI Takeshi
+ * (C) 2003, 2004 Paul Mundt
+ * (C) 2003, 2004, 2006 Andriy Skulysh
+ *
+ *  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/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/fb.h>
+
+#include <asm/machvec.h>
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+#include <asm/io.h>
+#include <asm/hd64461.h>
+#include <cpu/dac.h>
+
+#define WIDTH 640
+
+static struct fb_var_screeninfo hitfb_var = {
+        .activate       = FB_ACTIVATE_NOW,
+        .height         = -1,
+        .width          = -1,
+        .vmode          = FB_VMODE_NONINTERLACED,
+};
+
+static struct fb_fix_screeninfo hitfb_fix = {
+        .id             = "Hitachi HD64461",
+        .type           = FB_TYPE_PACKED_PIXELS,
+        .accel          = FB_ACCEL_NONE,
+};
+
+static inline void hitfb_accel_wait(void)
+{
+        while (fb_readw(HD64461_GRCFGR) & HD64461_GRCFGR_ACCSTATUS) ;
+}
+
+static inline void hitfb_accel_start(int truecolor)
+{
+        if (truecolor) {
+                fb_writew(6, HD64461_GRCFGR);
+        } else {
+                fb_writew(7, HD64461_GRCFGR);
+        }
+}
+
+static inline void hitfb_accel_set_dest(int truecolor, u16 dx, u16 dy,
+                                        u16 width, u16 height)
+{
+        u32 saddr = WIDTH * dy + dx;
+        if (truecolor)
+                saddr <<= 1;
+
+        fb_writew(width-1, HD64461_BBTDWR);
+        fb_writew(height-1, HD64461_BBTDHR);
+
+        fb_writew(saddr & 0xffff, HD64461_BBTDSARL);
+        fb_writew(saddr >> 16, HD64461_BBTDSARH);
+
+}
+
+static inline void hitfb_accel_bitblt(int truecolor, u16 sx, u16 sy, u16 dx,
+                                      u16 dy, u16 width, u16 height, u16 rop,
+                                      u32 mask_addr)
+{
+        u32 saddr, daddr;
+        u32 maddr = 0;
+
+        height--;
+        width--;
+        fb_writew(rop, HD64461_BBTROPR);
+        if ((sy < dy) || ((sy == dy) && (sx <= dx))) {
+                saddr = WIDTH * (sy + height) + sx + width;
+                daddr = WIDTH * (dy + height) + dx + width;
+                if (mask_addr) {
+                        if (truecolor)
+                                maddr = ((width >> 3) + 1) * (height + 1) - 1;
+                        else
+                                maddr =
+                                    (((width >> 4) + 1) * (height + 1) - 1) * 2;
+
+                        fb_writew((1 << 5) | 1, HD64461_BBTMDR);
+                } else
+                        fb_writew(1, HD64461_BBTMDR);
+        } else {
+                saddr = WIDTH * sy + sx;
+                daddr = WIDTH * dy + dx;
+                if (mask_addr) {
+                        fb_writew((1 << 5), HD64461_BBTMDR);
+                } else {
+                        fb_writew(0, HD64461_BBTMDR);
+                }
+        }
+        if (truecolor) {
+                saddr <<= 1;
+                daddr <<= 1;
+        }
+        fb_writew(width, HD64461_BBTDWR);
+        fb_writew(height, HD64461_BBTDHR);
+        fb_writew(saddr & 0xffff, HD64461_BBTSSARL);
+        fb_writew(saddr >> 16, HD64461_BBTSSARH);
+        fb_writew(daddr & 0xffff, HD64461_BBTDSARL);
+        fb_writew(daddr >> 16, HD64461_BBTDSARH);
+        if (mask_addr) {
+                maddr += mask_addr;
+                fb_writew(maddr & 0xffff, HD64461_BBTMARL);
+                fb_writew(maddr >> 16, HD64461_BBTMARH);
+        }
+        hitfb_accel_start(truecolor);
+}
+
+static void hitfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
+{
+        if (rect->rop != ROP_COPY)
+                cfb_fillrect(p, rect);
+        else {
+                hitfb_accel_wait();
+                fb_writew(0x00f0, HD64461_BBTROPR);
+                fb_writew(16, HD64461_BBTMDR);
+
+                if (p->var.bits_per_pixel == 16) {
+                        fb_writew(((u32 *) (p->pseudo_palette))[rect->color],
+                                  HD64461_GRSCR);
+                        hitfb_accel_set_dest(1, rect->dx, rect->dy, rect->width,
+                                             rect->height);
+                        hitfb_accel_start(1);
+                } else {
+                        fb_writew(rect->color, HD64461_GRSCR);
+                        hitfb_accel_set_dest(0, rect->dx, rect->dy, rect->width,
+                                             rect->height);
+                        hitfb_accel_start(0);
+                }
+        }
+}
+
+static void hitfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
+{
+        hitfb_accel_wait();
+        hitfb_accel_bitblt(p->var.bits_per_pixel == 16, area->sx, area->sy,
+                           area->dx, area->dy, area->width, area->height,
+                           0x00cc, 0);
+}
+
+static int hitfb_pan_display(struct fb_var_screeninfo *var,
+                             struct fb_info *info)
+{
+        int xoffset = var->xoffset;
+        int yoffset = var->yoffset;
+
+        if (xoffset != 0)
+                return -EINVAL;
+
+        fb_writew((yoffset*info->fix.line_length)>>10, HD64461_LCDCBAR);
+
+        return 0;
+}
+
+int hitfb_blank(int blank_mode, struct fb_info *info)
+{
+        unsigned short v;
+
+        if (blank_mode) {
+                v = fb_readw(HD64461_LDR1);
+                v &= ~HD64461_LDR1_DON;
+                fb_writew(v, HD64461_LDR1);
+
+                v = fb_readw(HD64461_LCDCCR);
+                v |= HD64461_LCDCCR_MOFF;
+                fb_writew(v, HD64461_LCDCCR);
+
+                v = fb_readw(HD64461_STBCR);
+                v |= HD64461_STBCR_SLCDST;
+                fb_writew(v, HD64461_STBCR);
+        } else {
+                v = fb_readw(HD64461_STBCR);
+                v &= ~HD64461_STBCR_SLCDST;
+                fb_writew(v, HD64461_STBCR);
+
+                v = fb_readw(HD64461_LCDCCR);
+                v &= ~(HD64461_LCDCCR_MOFF | HD64461_LCDCCR_STREQ);
+                fb_writew(v, HD64461_LCDCCR);
+
+                do {
+                    v = fb_readw(HD64461_LCDCCR);
+                } while(v&HD64461_LCDCCR_STBACK);
+
+                v = fb_readw(HD64461_LDR1);
+                v |= HD64461_LDR1_DON;
+                fb_writew(v, HD64461_LDR1);
+        }
+        return 0;
+}
+
+static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
+                           unsigned blue, unsigned transp, struct fb_info *info)
+{
+        if (regno >= 256)
+                return 1;
+
+        switch (info->var.bits_per_pixel) {
+        case 8:
+                fb_writew(regno << 8, HD64461_CPTWAR);
+                fb_writew(red >> 10, HD64461_CPTWDR);
+                fb_writew(green >> 10, HD64461_CPTWDR);
+                fb_writew(blue >> 10, HD64461_CPTWDR);
+                break;
+        case 16:
+                if (regno >= 16)
+                        return 1;
+                ((u32 *) (info->pseudo_palette))[regno] =
+                    ((red & 0xf800)) |
+                    ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
+                break;
+        }
+        return 0;
+}
+
+static int hitfb_sync(struct fb_info *info)
+{
+        hitfb_accel_wait();
+
+        return 0;
+}
+
+static int hitfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+        int maxy;
+
+        var->xres = info->var.xres;
+        var->xres_virtual = info->var.xres;
+        var->yres = info->var.yres;
+
+        if ((var->bits_per_pixel != 8) && (var->bits_per_pixel != 16))
+                var->bits_per_pixel = info->var.bits_per_pixel;
+
+        if (var->yres_virtual < var->yres)
+                var->yres_virtual = var->yres;
+
+        maxy = info->fix.smem_len / var->xres;
+
+        if (var->bits_per_pixel == 16)
+                maxy /= 2;
+
+        if (var->yres_virtual > maxy)
+                var->yres_virtual = maxy;
+
+        var->xoffset = 0;
+        var->yoffset = 0;
+
+        switch (var->bits_per_pixel) {
+        case 8:
+                var->red.offset = 0;
+                var->red.length = 8;
+                var->green.offset = 0;
+                var->green.length = 8;
+                var->blue.offset = 0;
+                var->blue.length = 8;
+                var->transp.offset = 0;
+                var->transp.length = 0;
+                break;
+        case 16:                /* RGB 565 */
+                var->red.offset = 11;
+                var->red.length = 5;
+                var->green.offset = 5;
+                var->green.length = 6;
+                var->blue.offset = 0;
+                var->blue.length = 5;
+                var->transp.offset = 0;
+                var->transp.length = 0;
+                break;
+        }
+
+        return 0;
+}
+
+static int hitfb_set_par(struct fb_info *info)
+{
+        unsigned short ldr3;
+
+        switch (info->var.bits_per_pixel) {
+        case 8:
+                info->fix.line_length = info->var.xres;
+                info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+                info->fix.ypanstep = 16;
+                break;
+        case 16:
+                info->fix.line_length = info->var.xres*2;
+                info->fix.visual = FB_VISUAL_TRUECOLOR;
+                info->fix.ypanstep = 8;
+                break;
+        }
+
+        fb_writew(info->fix.line_length, HD64461_LCDCLOR);
+        ldr3 = fb_readw(HD64461_LDR3);
+        ldr3 &= ~15;
+        ldr3 |= (info->var.bits_per_pixel == 8) ? 4 : 8;
+        fb_writew(ldr3, HD64461_LDR3);
+        return 0;
+}
+
+static struct fb_ops hitfb_ops = {
+        .owner          = THIS_MODULE,
+        .fb_check_var   = hitfb_check_var,
+        .fb_set_par             = hitfb_set_par,
+        .fb_setcolreg   = hitfb_setcolreg,
+        .fb_blank       = hitfb_blank,
+        .fb_sync        = hitfb_sync,
+        .fb_pan_display = hitfb_pan_display,
+        .fb_fillrect    = hitfb_fillrect,
+        .fb_copyarea    = hitfb_copyarea,
+        .fb_imageblit   = cfb_imageblit,
+};
+
+static int hitfb_probe(struct platform_device *dev)
+{
+        unsigned short lcdclor, ldr3, ldvndr;
+        struct fb_info *info;
+        int ret;
+
+        if (fb_get_options("hitfb", NULL))
+                return -ENODEV;
+
+        hitfb_fix.mmio_start = HD64461_IO_OFFSET(0x1000);
+        hitfb_fix.mmio_len = 0x1000;
+        hitfb_fix.smem_start = HD64461_IO_OFFSET(0x02000000);
+        hitfb_fix.smem_len = 512 * 1024;
+
+        lcdclor = fb_readw(HD64461_LCDCLOR);
+        ldvndr = fb_readw(HD64461_LDVNDR);
+        ldr3 = fb_readw(HD64461_LDR3);
+
+        switch (ldr3 & 15) {
+        default:
+        case 4:
+                hitfb_var.bits_per_pixel = 8;
+                hitfb_var.xres = lcdclor;
+                break;
+        case 8:
+                hitfb_var.bits_per_pixel = 16;
+                hitfb_var.xres = lcdclor / 2;
+                break;
+        }
+        hitfb_fix.line_length = lcdclor;
+        hitfb_fix.visual = (hitfb_var.bits_per_pixel == 8) ?
+            FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
+        hitfb_var.yres = ldvndr + 1;
+        hitfb_var.xres_virtual = hitfb_var.xres;
+        hitfb_var.yres_virtual = hitfb_fix.smem_len / lcdclor;
+        switch (hitfb_var.bits_per_pixel) {
+        case 8:
+                hitfb_var.red.offset = 0;
+                hitfb_var.red.length = 8;
+                hitfb_var.green.offset = 0;
+                hitfb_var.green.length = 8;
+                hitfb_var.blue.offset = 0;
+                hitfb_var.blue.length = 8;
+                hitfb_var.transp.offset = 0;
+                hitfb_var.transp.length = 0;
+                break;
+        case 16:                /* RGB 565 */
+                hitfb_var.red.offset = 11;
+                hitfb_var.red.length = 5;
+                hitfb_var.green.offset = 5;
+                hitfb_var.green.length = 6;
+                hitfb_var.blue.offset = 0;
+                hitfb_var.blue.length = 5;
+                hitfb_var.transp.offset = 0;
+                hitfb_var.transp.length = 0;
+                break;
+        }
+
+        info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
+        if (unlikely(!info))
+                return -ENOMEM;
+
+        info->fbops = &hitfb_ops;
+        info->var = hitfb_var;
+        info->fix = hitfb_fix;
+        info->pseudo_palette = info->par;
+        info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
+                FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_COPYAREA;
+
+        info->screen_base = (void *)hitfb_fix.smem_start;
+
+        ret = fb_alloc_cmap(&info->cmap, 256, 0);
+        if (unlikely(ret < 0))
+                goto err_fb;
+
+        ret = register_framebuffer(info);
+        if (unlikely(ret < 0))
+                goto err;
+
+        platform_set_drvdata(dev, info);
+
+        fb_info(info, "%s frame buffer device\n", info->fix.id);
+
+        return 0;
+
+err:
+        fb_dealloc_cmap(&info->cmap);
+err_fb:
+        framebuffer_release(info);
+        return ret;
+}
+
+static int hitfb_remove(struct platform_device *dev)
+{
+        struct fb_info *info = platform_get_drvdata(dev);
+
+        unregister_framebuffer(info);
+        fb_dealloc_cmap(&info->cmap);
+        framebuffer_release(info);
+
+        return 0;
+}
+
+static int hitfb_suspend(struct device *dev)
+{
+        u16 v;
+
+        hitfb_blank(1,0);
+        v = fb_readw(HD64461_STBCR);
+        v |= HD64461_STBCR_SLCKE_IST;
+        fb_writew(v, HD64461_STBCR);
+
+        return 0;
+}
+
+static int hitfb_resume(struct device *dev)
+{
+        u16 v;
+
+        v = fb_readw(HD64461_STBCR);
+        v &= ~HD64461_STBCR_SLCKE_OST;
+        msleep(100);
+        v = fb_readw(HD64461_STBCR);
+        v &= ~HD64461_STBCR_SLCKE_IST;
+        fb_writew(v, HD64461_STBCR);
+        hitfb_blank(0,0);
+
+        return 0;
+}
+
+static const struct dev_pm_ops hitfb_dev_pm_ops = {
+        .suspend        = hitfb_suspend,
+        .resume         = hitfb_resume,
+};
+
+static struct platform_driver hitfb_driver = {
+        .probe          = hitfb_probe,
+        .remove         = hitfb_remove,
+        .driver         = {
+                .name   = "hitfb",
+                .owner  = THIS_MODULE,
+                .pm     = &hitfb_dev_pm_ops,
+        },
+};
+
+static struct platform_device hitfb_device = {
+        .name   = "hitfb",
+        .id     = -1,
+};
+
+static int __init hitfb_init(void)
+{
+        int ret;
+
+        ret = platform_driver_register(&hitfb_driver);
+        if (!ret) {
+                ret = platform_device_register(&hitfb_device);
+                if (ret)
+                        platform_driver_unregister(&hitfb_driver);
+        }
+        return ret;
+}
+
+
+static void __exit hitfb_exit(void)
+{
+        platform_device_unregister(&hitfb_device);
+        platform_driver_unregister(&hitfb_driver);
+}
+
+module_init(hitfb_init);
+module_exit(hitfb_exit);
+
+MODULE_LICENSE("GPL");