diff options
Diffstat (limited to 'drivers/video/fbdev/hitfb.c')
| -rw-r--r-- | drivers/video/fbdev/hitfb.c | 500 |
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 0000000..a648d51 --- /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"); |