| /* |
| * 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 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/config.h> |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/sched.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| #include <linux/mm.h> |
| #include <linux/tty.h> |
| #include <linux/slab.h> |
| #include <linux/delay.h> |
| #include <linux/init.h> |
| #include <linux/fb.h> |
| |
| #include <asm/machvec.h> |
| #include <asm/uaccess.h> |
| #include <asm/pgtable.h> |
| #include <asm/io.h> |
| #include <asm/hd64461/hd64461.h> |
| |
| #ifdef MACH_HP600 |
| #include <asm/cpu/dac.h> |
| #include <asm/hp6xx/hp6xx.h> |
| #endif |
| |
| #define WIDTH 640 |
| |
| static struct fb_var_screeninfo hitfb_var __initdata = { |
| .activate = FB_ACTIVATE_NOW, |
| .height = -1, |
| .width = -1, |
| .vmode = FB_VMODE_NONINTERLACED, |
| }; |
| |
| static struct fb_fix_screeninfo hitfb_fix __initdata = { |
| .id = "Hitachi HD64461", |
| .type = FB_TYPE_PACKED_PIXELS, |
| .ypanstep = 8, |
| .accel = FB_ACCEL_NONE, |
| }; |
| |
| static u32 pseudo_palette[16]; |
| static struct fb_info fb_info; |
| |
| 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, HD64461_BBTDWR); |
| fb_writew(height, HD64461_BBTDHR); |
| |
| fb_writew(saddr & 0xffff, HD64461_BBTDSARL); |
| fb_writew(saddr >> 16, HD64461_BBTDSARH); |
| |
| } |
| |
| static inline void hitfb_accel_solidfill(int truecolor, u16 dx, u16 dy, |
| u16 width, u16 height, u16 color) |
| { |
| hitfb_accel_set_dest(truecolor, dx, dy, width, height); |
| |
| fb_writew(0x00f0, HD64461_BBTROPR); |
| fb_writew(16, HD64461_BBTMDR); |
| fb_writew(color, HD64461_GRSCR); |
| |
| hitfb_accel_start(truecolor); |
| } |
| |
| 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; |
| |
| 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 { |
| 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); |
| } |
| hitfb_accel_wait(); |
| } |
| } |
| |
| static void hitfb_copyarea(struct fb_info *p, const struct fb_copyarea *area) |
| { |
| hitfb_accel_bitblt(p->var.bits_per_pixel == 16, area->sx, area->sy, |
| area->dx, area->dy, area->width, area->height, |
| 0x00cc, 0); |
| hitfb_accel_wait(); |
| } |
| |
| 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, HD64461_LCDCBAR); |
| |
| return 0; |
| } |
| |
| int hitfb_blank(int blank_mode, struct fb_info *info) |
| { |
| unsigned short v; |
| |
| if (blank_mode) { |
| #ifdef MACH_HP600 |
| sh_dac_disable(DAC_LCD_BRIGHTNESS); |
| v = fb_readw(HD64461_GPBDR); |
| v |= HD64461_GPBDR_LCDOFF; |
| fb_writew(v, HD64461_GPBDR); |
| #endif |
| 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); |
| #ifdef MACH_HP600 |
| sh_dac_enable(DAC_LCD_BRIGHTNESS); |
| v = fb_readw(HD64461_GPBDR); |
| v &= ~HD64461_GPBDR_LCDOFF; |
| fb_writew(v, HD64461_GPBDR); |
| #endif |
| 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); |
| } |
| return 0; |
| } |
| |
| static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
| unsigned blue, unsigned transp, struct fb_info *info) |
| { |
| if (regno >= info->cmap.len) |
| 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: |
| ((u32 *) (info->pseudo_palette))[regno] = |
| ((red & 0xf800)) | |
| ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11); |
| break; |
| } |
| return 0; |
| } |
| |
| static struct fb_ops hitfb_ops = { |
| .owner = THIS_MODULE, |
| .fb_setcolreg = hitfb_setcolreg, |
| .fb_blank = hitfb_blank, |
| .fb_pan_display = hitfb_pan_display, |
| .fb_fillrect = hitfb_fillrect, |
| .fb_copyarea = hitfb_copyarea, |
| .fb_imageblit = cfb_imageblit, |
| .fb_cursor = soft_cursor, |
| }; |
| |
| int __init hitfb_init(void) |
| { |
| unsigned short lcdclor, ldr3, ldvndr; |
| int size; |
| |
| if (fb_get_options("hitfb", NULL)) |
| return -ENODEV; |
| |
| hitfb_fix.smem_start = CONFIG_HD64461_IOBASE + 0x02000000; |
| hitfb_fix.smem_len = (MACH_HP690) ? 1024 * 1024 : 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; |
| } |
| |
| fb_info.fbops = &hitfb_ops; |
| fb_info.var = hitfb_var; |
| fb_info.fix = hitfb_fix; |
| fb_info.pseudo_palette = pseudo_palette; |
| fb_info.flags = FBINFO_DEFAULT; |
| |
| fb_info.screen_base = (void *)hitfb_fix.smem_start; |
| |
| size = (fb_info.var.bits_per_pixel == 8) ? 256 : 16; |
| fb_alloc_cmap(&fb_info.cmap, size, 0); |
| |
| if (register_framebuffer(&fb_info) < 0) |
| return -EINVAL; |
| |
| printk(KERN_INFO "fb%d: %s frame buffer device\n", |
| fb_info.node, fb_info.fix.id); |
| return 0; |
| } |
| |
| static void __exit hitfb_exit(void) |
| { |
| unregister_framebuffer(&fb_info); |
| } |
| |
| module_init(hitfb_init); |
| module_exit(hitfb_exit); |
| |
| MODULE_LICENSE("GPL"); |