diff options
Diffstat (limited to 'drivers/video/hitfb.c')
| -rw-r--r-- | drivers/video/hitfb.c | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/drivers/video/hitfb.c b/drivers/video/hitfb.c new file mode 100644 index 000000000000..0d376ba54814 --- /dev/null +++ b/drivers/video/hitfb.c @@ -0,0 +1,350 @@ +/* + * 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"); |