// SPDX-License-Identifier: GPL-2.0-only /* * drivers/mb862xx/mb862xxfb.c * * Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver * * (C) 2008 Anatolij Gustschin * DENX Software Engineering */ #undef DEBUG #include #include #include #include #include #include #include #include #include #include #include #include #include "mb862xxfb.h" #include "mb862xx_reg.h" #define NR_PALETTE 256 #define MB862XX_MEM_SIZE 0x1000000 #define CORALP_MEM_SIZE 0x2000000 #define CARMINE_MEM_SIZE 0x8000000 #define DRV_NAME "mb862xxfb" #if defined(CONFIG_SOCRATES) static struct mb862xx_gc_mode socrates_gc_mode = { /* Mode for Prime View PM070WL4 TFT LCD Panel */ { "800x480", 45, 800, 480, 40000, 86, 42, 33, 10, 128, 2, 0, 0, 0 }, /* 16 bits/pixel, 16MB, 133MHz, SDRAM memory mode value */ 16, 0x1000000, GC_CCF_COT_133, 0x4157ba63 }; #endif /* Helpers */ static inline int h_total(struct fb_var_screeninfo *var) { return var->xres + var->left_margin + var->right_margin + var->hsync_len; } static inline int v_total(struct fb_var_screeninfo *var) { return var->yres + var->upper_margin + var->lower_margin + var->vsync_len; } static inline int hsp(struct fb_var_screeninfo *var) { return var->xres + var->right_margin - 1; } static inline int vsp(struct fb_var_screeninfo *var) { return var->yres + var->lower_margin - 1; } static inline int d_pitch(struct fb_var_screeninfo *var) { return var->xres * var->bits_per_pixel / 8; } static inline unsigned int chan_to_field(unsigned int chan, struct fb_bitfield *bf) { chan &= 0xffff; chan >>= 16 - bf->length; return chan << bf->offset; } static int mb862xxfb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { struct mb862xxfb_par *par = info->par; unsigned int val; switch (info->fix.visual) { case FB_VISUAL_TRUECOLOR: if (regno < 16) { val = chan_to_field(red, &info->var.red); val |= chan_to_field(green, &info->var.green); val |= chan_to_field(blue, &info->var.blue); par->pseudo_palette[regno] = val; } break; case FB_VISUAL_PSEUDOCOLOR: if (regno < 256) { val = (red >> 8) << 16; val |= (green >> 8) << 8; val |= blue >> 8; outreg(disp, GC_L0PAL0 + (regno * 4), val); } break; default: return 1; /* unsupported type */ } return 0; } static int mb862xxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi) { unsigned long tmp; if (fbi->dev) dev_dbg(fbi->dev, "%s\n", __func__); /* check if these values fit into the registers */ if (var->hsync_len > 255 || var->vsync_len > 255) return -EINVAL; if ((var->xres + var->right_margin) >= 4096) return -EINVAL; if ((var->yres + var->lower_margin) > 4096) return -EINVAL; if (h_total(var) > 4096 || v_total(var) > 4096) return -EINVAL; if (var->xres_virtual > 4096 || var->yres_virtual > 4096) return -EINVAL; if (var->bits_per_pixel <= 8) var->bits_per_pixel = 8; else if (var->bits_per_pixel <= 16) var->bits_per_pixel = 16; else if (var->bits_per_pixel <= 32) var->bits_per_pixel = 32; /* * can cope with 8,16 or 24/32bpp if resulting * pitch is divisible by 64 without remainder */ if (d_pitch(&fbi->var) % GC_L0M_L0W_UNIT) { int r; var->bits_per_pixel = 0; do { var->bits_per_pixel += 8; r = d_pitch(&fbi->var) % GC_L0M_L0W_UNIT; } while (r && var->bits_per_pixel <= 32); if (d_pitch(&fbi->var) % GC_L0M_L0W_UNIT) return -EINVAL; } /* line length is going to be 128 bit aligned */ tmp = (var->xres * var->bits_per_pixel) / 8; if ((tmp & 15) != 0) return -EINVAL; /* set r/g/b positions and validate bpp */ switch (var->bits_per_pixel) { case 8: var->red.length = var->bits_per_pixel; var->green.length = var->bits_per_pixel; var->blue.length = var->bits_per_pixel; var->red.offset = 0; var->green.offset = 0; var->blue.offset = 0; var->transp.length = 0; break; case 16: var->red.length = 5; var->green.length = 5; var->blue.length = 5; var->red.offset = 10; var->green.offset = 5; var->blue.offset = 0; var->transp.length = 0; break; case 24: case 32: var->transp.length = 8; var->red.length = 8; var->green.length = 8; var->blue.length = 8; var->transp.offset = 24; var->red.offset = 16; var->green.offset = 8; var->blue.offset = 0; break; default: return -EINVAL; } return 0; } static struct fb_ops mb862xxfb_ops; /* * set display parameters */ static int mb862xxfb_set_par(struct fb_info *fbi) { struct mb862xxfb_par *par = fbi->par; unsigned long reg, sc; dev_dbg(par->dev, "%s\n", __func__); if (par->type == BT_CORALP) mb862xxfb_init_accel(fbi, &mb862xxfb_ops, fbi->var.xres); if (par->pre_init) return 0; /* disp off */ reg = inreg(disp, GC_DCM1); reg &= ~GC_DCM01_DEN; outreg(disp, GC_DCM1, reg); /* set display reference clock div. */ sc = par->refclk / (1000000 / fbi->var.pixclock) - 1; reg = inreg(disp, GC_DCM1); reg &= ~(GC_DCM01_CKS | GC_DCM01_RESV | GC_DCM01_SC); reg |= sc << 8; outreg(disp, GC_DCM1, reg); dev_dbg(par->dev, "SC 0x%lx\n", sc); /* disp dimension, format */ reg = pack(d_pitch(&fbi->var) / GC_L0M_L0W_UNIT, (fbi->var.yres - 1)); if (fbi->var.bits_per_pixel == 16) reg |= GC_L0M_L0C_16; outreg(disp, GC_L0M, reg); if (fbi->var.bits_per_pixel == 32) { reg = inreg(disp, GC_L0EM); outreg(disp, GC_L0EM, reg | GC_L0EM_L0EC_24); } outreg(disp, GC_WY_WX, 0); reg = pack(fbi->var.yres - 1, fbi->var.xres); outreg(disp, GC_WH_WW, reg); outreg(disp, GC_L0OA0, 0); outreg(disp, GC_L0DA0, 0); outreg(disp, GC_L0DY_L0DX, 0); outreg(disp, GC_L0WY_L0WX, 0); outreg(disp, GC_L0WH_L0WW, reg); /* both HW-cursors off */ reg = inreg(disp, GC_CPM_CUTC); reg &= ~(GC_CPM_CEN0 | GC_CPM_CEN1); outreg(disp, GC_CPM_CUTC, reg); /* timings */ reg = pack(fbi->var.xres - 1, fbi->var.xres - 1); outreg(disp, GC_HDB_HDP, reg); reg = pack((fbi->var.yres - 1), vsp(&fbi->var)); outreg(disp, GC_VDP_VSP, reg); reg = ((fbi->var.vsync_len - 1) << 24) | pack((fbi->var.hsync_len - 1), hsp(&fbi->var)); outreg(disp, GC_VSW_HSW_HSP, reg); outreg(disp, GC_HTP, pack(h_total(&fbi->var) - 1, 0)); outreg(disp, GC_VTR, pack(v_total(&fbi->var) - 1, 0)); /* display on */ reg = inreg(disp, GC_DCM1); reg |= GC_DCM01_DEN | GC_DCM01_L0E; reg &= ~GC_DCM01_ESY; outreg(disp, GC_DCM1, reg); return 0; } static int mb862xxfb_pan(struct fb_var_screeninfo *var, struct fb_info *info) { struct mb862xxfb_par *par = info->par; unsigned long reg; reg = pack(var->yoffset, var->xoffset); outreg(disp, GC_L0WY_L0WX, reg); reg = pack(info->var.yres_virtual, info->var.xres_virtual); outreg(disp, GC_L0WH_L0WW, reg); return 0; } static int mb862xxfb_blank(int mode, struct fb_info *fbi) { struct mb862xxfb_par *par = fbi->par; unsigned long reg; dev_dbg(fbi->dev, "blank mode=%d\n", mode); switch (mode) { case FB_BLANK_POWERDOWN: reg = inreg(disp, GC_DCM1); reg &= ~GC_DCM01_DEN; outreg(disp, GC_DCM1, reg); break; case FB_BLANK_UNBLANK: reg = inreg(disp, GC_DCM1); reg |= GC_DCM01_DEN; outreg(disp, GC_DCM1, reg); break; case FB_BLANK_NORMAL: case FB_BLANK_VSYNC_SUSPEND: case FB_BLANK_HSYNC_SUSPEND: default: return 1; } return 0; } static int mb862xxfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg) { struct mb862xxfb_par *par = fbi->par; struct mb862xx_l1_cfg *l1_cfg = &par->l1_cfg; void __user *argp = (void __user *)arg; int *enable; u32 l1em = 0; switch (cmd) { case MB862XX_L1_GET_CFG: if (copy_to_user(argp, l1_cfg, sizeof(*l1_cfg))) return -EFAULT; break; case MB862XX_L1_SET_CFG: if (copy_from_user(l1_cfg, argp, sizeof(*l1_cfg))) return -EFAULT; if (l1_cfg->dh == 0 || l1_cfg->dw == 0) return -EINVAL; if ((l1_cfg->sw >= l1_cfg->dw) && (l1_cfg->sh >= l1_cfg->dh)) { /* downscaling */ outreg(cap, GC_CAP_CSC, pack((l1_cfg->sh << 11) / l1_cfg->dh, (l1_cfg->sw << 11) / l1_cfg->dw)); l1em = inreg(disp, GC_L1EM); l1em &= ~GC_L1EM_DM; } else if ((l1_cfg->sw <= l1_cfg->dw) && (l1_cfg->sh <= l1_cfg->dh)) { /* upscaling */ outreg(cap, GC_CAP_CSC, pack((l1_cfg->sh << 11) / l1_cfg->dh, (l1_cfg->sw << 11) / l1_cfg->dw)); outreg(cap, GC_CAP_CMSS, pack(l1_cfg->sw >> 1, l1_cfg->sh)); outreg(cap, GC_CAP_CMDS, pack(l1_cfg->dw >> 1, l1_cfg->dh)); l1em = inreg(disp, GC_L1EM); l1em |= GC_L1EM_DM; } if (l1_cfg->mirror) { outreg(cap, GC_CAP_CBM, inreg(cap, GC_CAP_CBM) | GC_CBM_HRV); l1em |= l1_cfg->dw * 2 - 8; } else { outreg(cap, GC_CAP_CBM, inreg(cap, GC_CAP_CBM) & ~GC_CBM_HRV); l1em &= 0xffff0000; } outreg(disp, GC_L1EM, l1em); break; case MB862XX_L1_ENABLE: enable = (int *)arg; if (*enable) { outreg(disp, GC_L1DA, par->cap_buf); outreg(cap, GC_CAP_IMG_START, pack(l1_cfg->sy >> 1, l1_cfg->sx)); outreg(cap, GC_CAP_IMG_END, pack(l1_cfg->sh, l1_cfg->sw)); outreg(disp, GC_L1M, GC_L1M_16 | GC_L1M_YC | GC_L1M_CS | (par->l1_stride << 16)); outreg(disp, GC_L1WY_L1WX, pack(l1_cfg->dy, l1_cfg->dx)); outreg(disp, GC_L1WH_L1WW, pack(l1_cfg->dh - 1, l1_cfg->dw)); outreg(disp, GC_DLS, 1); outreg(cap, GC_CAP_VCM, GC_VCM_VIE | GC_VCM_CM | GC_VCM_VS_PAL); outreg(disp, GC_DCM1, inreg(disp, GC_DCM1) | GC_DCM1_DEN | GC_DCM1_L1E); } else { outreg(cap, GC_CAP_VCM, inreg(cap, GC_CAP_VCM) & ~GC_VCM_VIE); outreg(disp, GC_DCM1, inreg(disp, GC_DCM1) & ~GC_DCM1_L1E); } break; case MB862XX_L1_CAP_CTL: enable = (int *)arg; if (*enable) { outreg(cap, GC_CAP_VCM, inreg(cap, GC_CAP_VCM) | GC_VCM_VIE); } else { outreg(cap, GC_CAP_VCM, inreg(cap, GC_CAP_VCM) & ~GC_VCM_VIE); } break; default: return -EINVAL; } return 0; } /* framebuffer ops */ static struct fb_ops mb862xxfb_ops = { .owner = THIS_MODULE, .fb_check_var = mb862xxfb_check_var, .fb_set_par = mb862xxfb_set_par, .fb_setcolreg = mb862xxfb_setcolreg, .fb_blank = mb862xxfb_blank, .fb_pan_display = mb862xxfb_pan, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, .fb_ioctl = mb862xxfb_ioctl, }; /* initialize fb_info data */ static int mb862xxfb_init_fbinfo(struct fb_info *fbi) { struct mb862xxfb_par *par = fbi->par; struct mb862xx_gc_mode *mode = par->gc_mode; unsigned long reg; int stride; fbi->fbops = &mb862xxfb_ops; fbi->pseudo_palette = par->pseudo_palette; fbi->screen_base = par->fb_base; fbi->screen_size = par->mapped_vram; strcpy(fbi->fix.id, DRV_NAME); fbi->fix.smem_start = (unsigned long)par->fb_base_phys; fbi->fix.mmio_start = (unsigned long)par->mmio_base_phys; fbi->fix.mmio_len = par->mmio_len; fbi->fix.accel = FB_ACCEL_NONE; fbi->fix.type = FB_TYPE_PACKED_PIXELS; fbi->fix.type_aux = 0; fbi->fix.xpanstep = 1; fbi->fix.ypanstep = 1; fbi->fix.ywrapstep = 0; reg = inreg(disp, GC_DCM1); if (reg & GC_DCM01_DEN && reg & GC_DCM01_L0E) { /* get the disp mode from active display cfg */ unsigned long sc = ((reg & GC_DCM01_SC) >> 8) + 1; unsigned long hsp, vsp, ht, vt; dev_dbg(par->dev, "using bootloader's disp. mode\n"); fbi->var.pixclock = (sc * 1000000) / par->refclk; fbi->var.xres = (inreg(disp, GC_HDB_HDP) & 0x0fff) + 1; reg = inreg(disp, GC_VDP_VSP); fbi->var.yres = ((reg >> 16) & 0x0fff) + 1; vsp = (reg & 0x0fff) + 1; fbi->var.xres_virtual = fbi->var.xres; fbi->var.yres_virtual = fbi->var.yres; reg = inreg(disp, GC_L0EM); if (reg & GC_L0EM_L0EC_24) { fbi->var.bits_per_pixel = 32; } else { reg = inreg(disp, GC_L0M); if (reg & GC_L0M_L0C_16) fbi->var.bits_per_pixel = 16; else fbi->var.bits_per_pixel = 8; } reg = inreg(disp, GC_VSW_HSW_HSP); fbi->var.hsync_len = ((reg & 0xff0000) >> 16) + 1; fbi->var.vsync_len = ((reg & 0x3f000000) >> 24) + 1; hsp = (reg & 0xffff) + 1; ht = ((inreg(disp, GC_HTP) & 0xfff0000) >> 16) + 1; fbi->var.right_margin = hsp - fbi->var.xres; fbi->var.left_margin = ht - hsp - fbi->var.hsync_len; vt = ((inreg(disp, GC_VTR) & 0xfff0000) >> 16) + 1; fbi->var.lower_margin = vsp - fbi->var.yres; fbi->var.upper_margin = vt - vsp - fbi->var.vsync_len; } else if (mode) { dev_dbg(par->dev, "using supplied mode\n"); fb_videomode_to_var(&fbi->var, (struct fb_videomode *)mode); fbi->var.bits_per_pixel = mode->def_bpp ? mode->def_bpp : 8; } else { int ret; ret = fb_find_mode(&fbi->var, fbi, "640x480-16@60", NULL, 0, NULL, 16); if (ret == 0 || ret == 4) { dev_err(par->dev, "failed to get initial mode\n"); return -EINVAL; } } fbi->var.xoffset = 0; fbi->var.yoffset = 0; fbi->var.grayscale = 0; fbi->var.nonstd = 0; fbi->var.height = -1; fbi->var.width = -1; fbi->var.accel_flags = 0; fbi->var.vmode = FB_VMODE_NONINTERLACED; fbi->var.activate = FB_ACTIVATE_NOW; fbi->flags = FBINFO_DEFAULT | #ifdef __BIG_ENDIAN FBINFO_FOREIGN_ENDIAN | #endif FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN; /* check and possibly fix bpp */ if ((fbi->fbops->fb_check_var)(&fbi->var, fbi)) dev_err(par->dev, "check_var() failed on initial setup?\n"); fbi->fix.visual = fbi->var.bits_per_pixel == 8 ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; fbi->fix.line_length = (fbi->var.xres_virtual * fbi->var.bits_per_pixel) / 8; fbi->fix.smem_len = fbi->fix.line_length * fbi->var.yres_virtual; /* * reserve space for capture buffers and two cursors * at the end of vram: 720x576 * 2 * 2.2 + 64x64 * 16. */ par->cap_buf = par->mapped_vram - 0x1bd800 - 0x10000; par->cap_len = 0x1bd800; par->l1_cfg.sx = 0; par->l1_cfg.sy = 0; par->l1_cfg.sw = 720; par->l1_cfg.sh = 576; par->l1_cfg.dx = 0; par->l1_cfg.dy = 0; par->l1_cfg.dw = 720; par->l1_cfg.dh = 576; stride = par->l1_cfg.sw * (fbi->var.bits_per_pixel / 8); par->l1_stride = stride / 64 + ((stride % 64) ? 1 : 0); outreg(cap, GC_CAP_CBM, GC_CBM_OO | GC_CBM_CBST | (par->l1_stride << 16)); outreg(cap, GC_CAP_CBOA, par->cap_buf); outreg(cap, GC_CAP_CBLA, par->cap_buf + par->cap_len); return 0; } /* * show some display controller and cursor registers */ static ssize_t dispregs_show(struct device *dev, struct device_attribute *attr, char *buf) { struct fb_info *fbi = dev_get_drvdata(dev); struct mb862xxfb_par *par = fbi->par; char *ptr = buf; unsigned int reg; for (reg = GC_DCM0; reg <= GC_L0DY_L0DX; reg += 4) ptr += sprintf(ptr, "%08x = %08x\n", reg, inreg(disp, reg)); for (reg = GC_CPM_CUTC; reg <= GC_CUY1_CUX1; reg += 4) ptr += sprintf(ptr, "%08x = %08x\n", reg, inreg(disp, reg)); for (reg = GC_DCM1; reg <= GC_L0WH_L0WW; reg += 4) ptr += sprintf(ptr, "%08x = %08x\n", reg, inreg(disp, reg)); for (reg = 0x400; reg <= 0x410; reg += 4) ptr += sprintf(ptr, "geo %08x = %08x\n", reg, inreg(geo, reg)); for (reg = 0x400; reg <= 0x410; reg += 4) ptr += sprintf(ptr, "draw %08x = %08x\n", reg, inreg(draw, reg)); for (reg = 0x440; reg <= 0x450; reg += 4) ptr += sprintf(ptr, "draw %08x = %08x\n", reg, inreg(draw, reg)); return ptr - buf; } static DEVICE_ATTR_RO(dispregs); static irqreturn_t mb862xx_intr(int irq, void *dev_id) { struct mb862xxfb_par *par = (struct mb862xxfb_par *) dev_id; unsigned long reg_ist, mask; if (!par) return IRQ_NONE; if (par->type == BT_CARMINE) { /* Get Interrupt Status */ reg_ist = inreg(ctrl, GC_CTRL_STATUS); mask = inreg(ctrl, GC_CTRL_INT_MASK); if (reg_ist == 0) return IRQ_HANDLED; reg_ist &= mask; if (reg_ist == 0) return IRQ_HANDLED; /* Clear interrupt status */ outreg(ctrl, 0x0, reg_ist); } else { /* Get status */ reg_ist = inreg(host, GC_IST); mask = inreg(host, GC_IMASK); reg_ist &= mask; if (reg_ist == 0) return IRQ_HANDLED; /* Clear status */ outreg(host, GC_IST, ~reg_ist); } return IRQ_HANDLED; } #if defined(CONFIG_FB_MB862XX_LIME) /* * GDC (Lime, Coral(B/Q), Mint, ...) on host bus */ static int mb862xx_gdc_init(struct mb862xxfb_par *par) { unsigned long ccf, mmr; unsigned long ver, rev; if (!par) return -ENODEV; #if defined(CONFIG_FB_PRE_INIT_FB) par->pre_init = 1; #endif par->host = par->mmio_base; par->i2c = par->mmio_base + MB862XX_I2C_BASE; par->disp = par->mmio_base + MB862XX_DISP_BASE; par->cap = par->mmio_base + MB862XX_CAP_BASE; par->draw = par->mmio_base + MB862XX_DRAW_BASE; par->geo = par->mmio_base + MB862XX_GEO_BASE; par->pio = par->mmio_base + MB862XX_PIO_BASE; par->refclk = GC_DISP_REFCLK_400; ver = inreg(host, GC_CID); rev = inreg(pio, GC_REVISION); if ((ver == 0x303) && (rev & 0xffffff00) == 0x20050100) { dev_info(par->dev, "Fujitsu Lime v1.%d found\n", (int)rev & 0xff); par->type = BT_LIME; ccf = par->gc_mode ? par->gc_mode->ccf : GC_CCF_COT_100; mmr = par->gc_mode ? par->gc_mode->mmr : 0x414fb7f2; } else { dev_info(par->dev, "? GDC, CID/Rev.: 0x%lx/0x%lx \n", ver, rev); return -ENODEV; } if (!par->pre_init) { outreg(host, GC_CCF, ccf); udelay(200); outreg(host, GC_MMR, mmr); udelay(10); } /* interrupt status */ outreg(host, GC_IST, 0); outreg(host, GC_IMASK, GC_INT_EN); return 0; } static int of_platform_mb862xx_probe(struct platform_device *ofdev) { struct device_node *np = ofdev->dev.of_node; struct device *dev = &ofdev->dev; struct mb862xxfb_par *par; struct fb_info *info; struct resource res; resource_size_t res_size; unsigned long ret = -ENODEV; if (of_address_to_resource(np, 0, &res)) { dev_err(dev, "Invalid address\n"); return -ENXIO; } info = framebuffer_alloc(sizeof(struct mb862xxfb_par), dev); if (!info) return -ENOMEM; par = info->par; par->info = info; par->dev = dev; par->irq = irq_of_parse_and_map(np, 0); if (!par->irq) { dev_err(dev, "failed to map irq\n"); ret = -ENODEV; goto fbrel; } res_size = resource_size(&res); par->res = request_mem_region(res.start, res_size, DRV_NAME); if (par->res == NULL) { dev_err(dev, "Cannot claim framebuffer/mmio\n"); ret = -ENXIO; goto irqdisp; } #if defined(CONFIG_SOCRATES) par->gc_mode = &socrates_gc_mode; #endif par->fb_base_phys = res.start; par->mmio_base_phys = res.start + MB862XX_MMIO_BASE; par->mmio_len = MB862XX_MMIO_SIZE; if (par->gc_mode) par->mapped_vram = par->gc_mode->max_vram; else par->mapped_vram = MB862XX_MEM_SIZE; par->fb_base = ioremap(par->fb_base_phys, par->mapped_vram); if (par->fb_base == NULL) { dev_err(dev, "Cannot map framebuffer\n"); goto rel_reg; } par->mmio_base = ioremap(par->mmio_base_phys, par->mmio_len); if (par->mmio_base == NULL) { dev_err(dev, "Cannot map registers\n"); goto fb_unmap; } dev_dbg(dev, "fb phys 0x%llx 0x%lx\n", (u64)par->fb_base_phys, (ulong)par->mapped_vram); dev_dbg(dev, "mmio phys 0x%llx 0x%lx, (irq = %d)\n", (u64)par->mmio_base_phys, (ulong)par->mmio_len, par->irq); if (mb862xx_gdc_init(par)) goto io_unmap; if (request_irq(par->irq, mb862xx_intr, 0, DRV_NAME, (void *)par)) { dev_err(dev, "Cannot request irq\n"); goto io_unmap; } mb862xxfb_init_fbinfo(info); if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0) < 0) { dev_err(dev, "Could not allocate cmap for fb_info.\n"); goto free_irq; } if ((info->fbops->fb_set_par)(info)) dev_err(dev, "set_var() failed on initial setup?\n"); if (register_framebuffer(info)) { dev_err(dev, "failed to register framebuffer\n"); goto rel_cmap; } dev_set_drvdata(dev, info); if (device_create_file(dev, &dev_attr_dispregs)) dev_err(dev, "Can't create sysfs regdump file\n"); return 0; rel_cmap: fb_dealloc_cmap(&info->cmap); free_irq: outreg(host, GC_IMASK, 0); free_irq(par->irq, (void *)par); io_unmap: iounmap(par->mmio_base); fb_unmap: iounmap(par->fb_base); rel_reg: release_mem_region(res.start, res_size); irqdisp: irq_dispose_mapping(par->irq); fbrel: framebuffer_release(info); return ret; } static void of_platform_mb862xx_remove(struct platform_device *ofdev) { struct fb_info *fbi = dev_get_drvdata(&ofdev->dev); struct mb862xxfb_par *par = fbi->par; resource_size_t res_size = resource_size(par->res); unsigned long reg; dev_dbg(fbi->dev, "%s release\n", fbi->fix.id); /* display off */ reg = inreg(disp, GC_DCM1); reg &= ~(GC_DCM01_DEN | GC_DCM01_L0E); outreg(disp, GC_DCM1, reg); /* disable interrupts */ outreg(host, GC_IMASK, 0); free_irq(par->irq, (void *)par); irq_dispose_mapping(par->irq); device_remove_file(&ofdev->dev, &dev_attr_dispregs); unregister_framebuffer(fbi); fb_dealloc_cmap(&fbi->cmap); iounmap(par->mmio_base); iounmap(par->fb_base); release_mem_region(par->res->start, res_size); framebuffer_release(fbi); } /* * common types */ static struct of_device_id of_platform_mb862xx_tbl[] = { { .compatible = "fujitsu,MB86276", }, { .compatible = "fujitsu,lime", }, { .compatible = "fujitsu,MB86277", }, { .compatible = "fujitsu,mint", }, { .compatible = "fujitsu,MB86293", }, { .compatible = "fujitsu,MB86294", }, { .compatible = "fujitsu,coral", }, { /* end */ } }; MODULE_DEVICE_TABLE(of, of_platform_mb862xx_tbl); static struct platform_driver of_platform_mb862xxfb_driver = { .driver = { .name = DRV_NAME, .of_match_table = of_platform_mb862xx_tbl, }, .probe = of_platform_mb862xx_probe, .remove_new = of_platform_mb862xx_remove, }; #endif #if defined(CONFIG_FB_MB862XX_PCI_GDC) static int coralp_init(struct mb862xxfb_par *par) { int cn, ver; par->host = par->mmio_base; par->i2c = par->mmio_base + MB862XX_I2C_BASE; par->disp = par->mmio_base + MB862XX_DISP_BASE; par->cap = par->mmio_base + MB862XX_CAP_BASE; par->draw = par->mmio_base + MB862XX_DRAW_BASE; par->geo = par->mmio_base + MB862XX_GEO_BASE; par->pio = par->mmio_base + MB862XX_PIO_BASE; par->refclk = GC_DISP_REFCLK_400; if (par->mapped_vram >= 0x2000000) { /* relocate gdc registers space */ writel(1, par->fb_base + MB862XX_MMIO_BASE + GC_RSW); udelay(1); /* wait at least 20 bus cycles */ } ver = inreg(host, GC_CID); cn = (ver & GC_CID_CNAME_MSK) >> 8; ver = ver & GC_CID_VERSION_MSK; if (cn == 3) { unsigned long reg; dev_info(par->dev, "Fujitsu Coral-%s GDC Rev.%d found\n",\ (ver == 6) ? "P" : (ver == 8) ? "PA" : "?", par->pdev->revision); reg = inreg(disp, GC_DCM1); if (reg & GC_DCM01_DEN && reg & GC_DCM01_L0E) par->pre_init = 1; if (!par->pre_init) { outreg(host, GC_CCF, GC_CCF_CGE_166 | GC_CCF_COT_133); udelay(200); outreg(host, GC_MMR, GC_MMR_CORALP_EVB_VAL); udelay(10); } /* Clear interrupt status */ outreg(host, GC_IST, 0); } else { return -ENODEV; } mb862xx_i2c_init(par); return 0; } static int init_dram_ctrl(struct mb862xxfb_par *par) { unsigned long i = 0; /* * Set io mode first! Spec. says IC may be destroyed * if not set to SSTL2/LVCMOS before init. */ outreg(dram_ctrl, GC_DCTL_IOCONT1_IOCONT0, GC_EVB_DCTL_IOCONT1_IOCONT0); /* DRAM init */ outreg(dram_ctrl, GC_DCTL_MODE_ADD, GC_EVB_DCTL_MODE_ADD); outreg(dram_ctrl, GC_DCTL_SETTIME1_EMODE, GC_EVB_DCTL_SETTIME1_EMODE); outreg(dram_ctrl, GC_DCTL_REFRESH_SETTIME2, GC_EVB_DCTL_REFRESH_SETTIME2); outreg(dram_ctrl, GC_DCTL_RSV2_RSV1, GC_EVB_DCTL_RSV2_RSV1); outreg(dram_ctrl, GC_DCTL_DDRIF2_DDRIF1, GC_EVB_DCTL_DDRIF2_DDRIF1); outreg(dram_ctrl, GC_DCTL_RSV0_STATES, GC_EVB_DCTL_RSV0_STATES); /* DLL reset done? */ while ((inreg(dram_ctrl, GC_DCTL_RSV0_STATES) & GC_DCTL_STATES_MSK)) { udelay(GC_DCTL_INIT_WAIT_INTERVAL); if (i++ > GC_DCTL_INIT_WAIT_CNT) { dev_err(par->dev, "VRAM init failed.\n"); return -EINVAL; } } outreg(dram_ctrl, GC_DCTL_MODE_ADD, GC_EVB_DCTL_MODE_ADD_AFT_RST); outreg(dram_ctrl, GC_DCTL_RSV0_STATES, GC_EVB_DCTL_RSV0_STATES_AFT_RST); return 0; } static int carmine_init(struct mb862xxfb_par *par) { unsigned long reg; par->ctrl = par->mmio_base + MB86297_CTRL_BASE; par->i2c = par->mmio_base + MB86297_I2C_BASE; par->disp = par->mmio_base + MB86297_DISP0_BASE; par->disp1 = par->mmio_base + MB86297_DISP1_BASE; par->cap = par->mmio_base + MB86297_CAP0_BASE; par->cap1 = par->mmio_base + MB86297_CAP1_BASE; par->draw = par->mmio_base + MB86297_DRAW_BASE; par->dram_ctrl = par->mmio_base + MB86297_DRAMCTRL_BASE; par->wrback = par->mmio_base + MB86297_WRBACK_BASE; par->refclk = GC_DISP_REFCLK_533; /* warm up */ reg = GC_CTRL_CLK_EN_DRAM | GC_CTRL_CLK_EN_2D3D | GC_CTRL_CLK_EN_DISP0; outreg(ctrl, GC_CTRL_CLK_ENABLE, reg); /* check for engine module revision */ if (inreg(draw, GC_2D3D_REV) == GC_RE_REVISION) dev_info(par->dev, "Fujitsu Carmine GDC Rev.%d found\n", par->pdev->revision); else goto err_init; reg &= ~GC_CTRL_CLK_EN_2D3D; outreg(ctrl, GC_CTRL_CLK_ENABLE, reg); /* set up vram */ if (init_dram_ctrl(par) < 0) goto err_init; outreg(ctrl, GC_CTRL_INT_MASK, 0); return 0; err_init: outreg(ctrl, GC_CTRL_CLK_ENABLE, 0); return -EINVAL; } static inline int mb862xx_pci_gdc_init(struct mb862xxfb_par *par) { switch (par->type) { case BT_CORALP: return coralp_init(par); case BT_CARMINE: return carmine_init(par); default: return -ENODEV; } } #define CHIP_ID(id) \ { PCI_DEVICE(PCI_VENDOR_ID_FUJITSU_LIMITED, id) } static const struct pci_device_id mb862xx_pci_tbl[] = { /* MB86295/MB86296 */ CHIP_ID(PCI_DEVICE_ID_FUJITSU_CORALP), CHIP_ID(PCI_DEVICE_ID_FUJITSU_CORALPA), /* MB86297 */ CHIP_ID(PCI_DEVICE_ID_FUJITSU_CARMINE), { 0, } }; MODULE_DEVICE_TABLE(pci, mb862xx_pci_tbl); static int mb862xx_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct mb862xxfb_par *par; struct fb_info *info; struct device *dev = &pdev->dev; int ret; ret = aperture_remove_conflicting_pci_devices(pdev, "mb862xxfb"); if (ret) return ret; ret = pci_enable_device(pdev); if (ret < 0) { dev_err(dev, "Cannot enable PCI device\n"); goto out; } info = framebuffer_alloc(sizeof(struct mb862xxfb_par), dev); if (!info) { ret = -ENOMEM; goto dis_dev; } par = info->par; par->info = info; par->dev = dev; par->pdev = pdev; par->irq = pdev->irq; ret = pci_request_regions(pdev, DRV_NAME); if (ret < 0) { dev_err(dev, "Cannot reserve region(s) for PCI device\n"); goto rel_fb; } switch (pdev->device) { case PCI_DEVICE_ID_FUJITSU_CORALP: case PCI_DEVICE_ID_FUJITSU_CORALPA: par->fb_base_phys = pci_resource_start(par->pdev, 0); par->mapped_vram = CORALP_MEM_SIZE; if (par->mapped_vram >= 0x2000000) { par->mmio_base_phys = par->fb_base_phys + MB862XX_MMIO_HIGH_BASE; } else { par->mmio_base_phys = par->fb_base_phys + MB862XX_MMIO_BASE; } par->mmio_len = MB862XX_MMIO_SIZE; par->type = BT_CORALP; break; case PCI_DEVICE_ID_FUJITSU_CARMINE: par->fb_base_phys = pci_resource_start(par->pdev, 2); par->mmio_base_phys = pci_resource_start(par->pdev, 3); par->mmio_len = pci_resource_len(par->pdev, 3); par->mapped_vram = CARMINE_MEM_SIZE; par->type = BT_CARMINE; break; default: /* should never occur */ ret = -EIO; goto rel_reg; } par->fb_base = ioremap(par->fb_base_phys, par->mapped_vram); if (par->fb_base == NULL) { dev_err(dev, "Cannot map framebuffer\n"); ret = -EIO; goto rel_reg; } par->mmio_base = ioremap(par->mmio_base_phys, par->mmio_len); if (par->mmio_base == NULL) { dev_err(dev, "Cannot map registers\n"); ret = -EIO; goto fb_unmap; } dev_dbg(dev, "fb phys 0x%llx 0x%lx\n", (unsigned long long)par->fb_base_phys, (ulong)par->mapped_vram); dev_dbg(dev, "mmio phys 0x%llx 0x%lx\n", (unsigned long long)par->mmio_base_phys, (ulong)par->mmio_len); ret = mb862xx_pci_gdc_init(par); if (ret) goto io_unmap; ret = request_irq(par->irq, mb862xx_intr, IRQF_SHARED, DRV_NAME, (void *)par); if (ret) { dev_err(dev, "Cannot request irq\n"); goto io_unmap; } mb862xxfb_init_fbinfo(info); if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0) < 0) { dev_err(dev, "Could not allocate cmap for fb_info.\n"); ret = -ENOMEM; goto free_irq; } if ((info->fbops->fb_set_par)(info)) dev_err(dev, "set_var() failed on initial setup?\n"); ret = register_framebuffer(info); if (ret < 0) { dev_err(dev, "failed to register framebuffer\n"); goto rel_cmap; } pci_set_drvdata(pdev, info); if (device_create_file(dev, &dev_attr_dispregs)) dev_err(dev, "Can't create sysfs regdump file\n"); if (par->type == BT_CARMINE) outreg(ctrl, GC_CTRL_INT_MASK, GC_CARMINE_INT_EN); else outreg(host, GC_IMASK, GC_INT_EN); return 0; rel_cmap: fb_dealloc_cmap(&info->cmap); free_irq: free_irq(par->irq, (void *)par); io_unmap: iounmap(par->mmio_base); fb_unmap: iounmap(par->fb_base); rel_reg: pci_release_regions(pdev); rel_fb: framebuffer_release(info); dis_dev: pci_disable_device(pdev); out: return ret; } static void mb862xx_pci_remove(struct pci_dev *pdev) { struct fb_info *fbi = pci_get_drvdata(pdev); struct mb862xxfb_par *par = fbi->par; unsigned long reg; dev_dbg(fbi->dev, "%s release\n", fbi->fix.id); /* display off */ reg = inreg(disp, GC_DCM1); reg &= ~(GC_DCM01_DEN | GC_DCM01_L0E); outreg(disp, GC_DCM1, reg); if (par->type == BT_CARMINE) { outreg(ctrl, GC_CTRL_INT_MASK, 0); outreg(ctrl, GC_CTRL_CLK_ENABLE, 0); } else { outreg(host, GC_IMASK, 0); } mb862xx_i2c_exit(par); device_remove_file(&pdev->dev, &dev_attr_dispregs); unregister_framebuffer(fbi); fb_dealloc_cmap(&fbi->cmap); free_irq(par->irq, (void *)par); iounmap(par->mmio_base); iounmap(par->fb_base); pci_release_regions(pdev); framebuffer_release(fbi); pci_disable_device(pdev); } static struct pci_driver mb862xxfb_pci_driver = { .name = DRV_NAME, .id_table = mb862xx_pci_tbl, .probe = mb862xx_pci_probe, .remove = mb862xx_pci_remove, }; #endif static int mb862xxfb_init(void) { int ret = -ENODEV; if (fb_modesetting_disabled(DRV_NAME)) return -ENODEV; #if defined(CONFIG_FB_MB862XX_LIME) ret = platform_driver_register(&of_platform_mb862xxfb_driver); #endif #if defined(CONFIG_FB_MB862XX_PCI_GDC) ret = pci_register_driver(&mb862xxfb_pci_driver); #endif return ret; } static void __exit mb862xxfb_exit(void) { #if defined(CONFIG_FB_MB862XX_LIME) platform_driver_unregister(&of_platform_mb862xxfb_driver); #endif #if defined(CONFIG_FB_MB862XX_PCI_GDC) pci_unregister_driver(&mb862xxfb_pci_driver); #endif } module_init(mb862xxfb_init); module_exit(mb862xxfb_exit); MODULE_DESCRIPTION("Fujitsu MB862xx Framebuffer driver"); MODULE_AUTHOR("Anatolij Gustschin "); MODULE_LICENSE("GPL v2");