--- /dev/null
+/*
+ * 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/uaccess.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#if defined(CONFIG_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 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;
+}
+
+/*
+ * 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, 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 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));
+
+ 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(dispregs, 0444, mb862xxfb_show_dispregs, NULL);
+
+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 == 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 = 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 int 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);
+ return 0;
+}
+
+/*
+ * 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 */ }
+};
+
+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 = 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 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 = 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;
+ 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 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 <agust@denx.de>");
+MODULE_LICENSE("GPL v2");
Code Review / kvmfornfv.git / blobdiff