diff options
Diffstat (limited to 'drivers/video/mb862xx/mb862xxfb.c')
| -rw-r--r-- | drivers/video/mb862xx/mb862xxfb.c | 1061 |
1 files changed, 1061 insertions, 0 deletions
diff --git a/drivers/video/mb862xx/mb862xxfb.c b/drivers/video/mb862xx/mb862xxfb.c new file mode 100644 index 000000000000..38718d95fbb9 --- /dev/null +++ b/drivers/video/mb862xx/mb862xxfb.c @@ -0,0 +1,1061 @@ +/* + * drivers/mb862xx/mb862xxfb.c + * + * Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver + * + * (C) 2008 Anatolij Gustschin <agust@denx.de> + * DENX Software Engineering + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#undef DEBUG + +#include <linux/fb.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#if defined(CONFIG_PPC_OF) +#include <linux/of_platform.h> +#endif +#include "mb862xxfb.h" +#include "mb862xx_reg.h" + +#define NR_PALETTE 256 +#define MB862XX_MEM_SIZE 0x1000000 +#define CORALP_MEM_SIZE 0x4000000 +#define CARMINE_MEM_SIZE 0x8000000 +#define DRV_NAME "mb862xxfb" + +#if defined(CONFIG_LWMON5) +static struct mb862xx_gc_mode lwmon5_gc_mode = { + /* Mode for Sharp LQ104V1DG61 TFT LCD Panel */ + { "640x480", 60, 640, 480, 40000, 48, 16, 32, 11, 96, 2, 0, 0, 0 }, + /* 16 bits/pixel, 32MB, 100MHz, SDRAM memory mode value */ + 16, 0x2000000, GC_CCF_COT_100, 0x414fb7f2 +}; +#endif + +#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; +} + +/* + * 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->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(var->yres_virtual, 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; +} + +/* 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, +}; + +/* 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; + + 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.smem_len = par->mapped_vram; + 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; + return 0; +} + +/* + * show some display controller and cursor registers + */ +static ssize_t mb862xxfb_show_dispregs(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)); + + return ptr - buf; +} + +static DEVICE_ATTR(dispregs, 0444, mb862xxfb_show_dispregs, NULL); + +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 __devinit of_platform_mb862xx_probe(struct of_device *ofdev, + const struct of_device_id *id) +{ + struct device_node *np = ofdev->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 == NULL) { + dev_err(dev, "cannot allocate framebuffer\n"); + return -ENOMEM; + } + + par = info->par; + par->info = info; + par->dev = dev; + + par->irq = irq_of_parse_and_map(np, 0); + if (par->irq == NO_IRQ) { + dev_err(dev, "failed to map irq\n"); + ret = -ENODEV; + goto fbrel; + } + + res_size = 1 + res.end - res.start; + 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_LWMON5) + par->gc_mode = &lwmon5_gc_mode; +#endif + +#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, IRQF_DISABLED, + 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: + dev_set_drvdata(dev, NULL); + framebuffer_release(info); + return ret; +} + +static int __devexit of_platform_mb862xx_remove(struct of_device *ofdev) +{ + struct fb_info *fbi = dev_get_drvdata(&ofdev->dev); + struct mb862xxfb_par *par = fbi->par; + resource_size_t res_size = 1 + par->res->end - par->res->start; + 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); + + dev_set_drvdata(&ofdev->dev, NULL); + release_mem_region(par->res->start, res_size); + framebuffer_release(fbi); + return 0; +} + +/* + * common types + */ +static struct of_device_id __devinitdata 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 */ } +}; + +static struct of_platform_driver of_platform_mb862xxfb_driver = { + .owner = THIS_MODULE, + .name = DRV_NAME, + .match_table = of_platform_mb862xx_tbl, + .probe = of_platform_mb862xx_probe, + .remove = __devexit_p(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; + + ver = inreg(host, GC_CID); + cn = (ver & GC_CID_CNAME_MSK) >> 8; + ver = ver & GC_CID_VERSION_MSK; + if (cn == 3) { + dev_info(par->dev, "Fujitsu Coral-%s GDC Rev.%d found\n",\ + (ver == 6) ? "P" : (ver == 8) ? "PA" : "?", + par->pdev->revision); + 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; + } + 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 struct pci_device_id mb862xx_pci_tbl[] __devinitdata = { + /* 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 __devinit 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 = 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) { + dev_err(dev, "framebuffer alloc failed\n"); + 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; + 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 */ + 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"); + 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", + (u64)par->fb_base_phys, (ulong)par->mapped_vram); + dev_dbg(dev, "mmio phys 0x%llx 0x%lx\n", + (u64)par->mmio_base_phys, (ulong)par->mmio_len); + + if (mb862xx_pci_gdc_init(par)) + goto io_unmap; + + if (request_irq(par->irq, mb862xx_intr, IRQF_DISABLED | IRQF_SHARED, + 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"); + 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 __devexit 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); + } + + device_remove_file(&pdev->dev, &dev_attr_dispregs); + + pci_set_drvdata(pdev, NULL); + 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 = __devexit_p(mb862xx_pci_remove), +}; +#endif + +static int __devinit mb862xxfb_init(void) +{ + int ret = -ENODEV; + +#if defined(CONFIG_FB_MB862XX_LIME) + ret = of_register_platform_driver(&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) + of_unregister_platform_driver(&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 <agust@denx.de>"); +MODULE_LICENSE("GPL v2"); |