--- /dev/null
+/*
+ * 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",
+ .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");
Code Review / kvmfornfv.git / blobdiff