tresor.bessoh
/
linuxdebug
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
linuxdebug/drivers/video/fbdev/mb862xx/mb862xxfbdrv.c

1209 lines
30 KiB
C
Raw Normal View History

null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0-only
/*
* drivers/mb862xx/mb862xxfb.c
*
* Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver
*
* (C) 2008 Anatolij Gustschin <agust@denx.de>
* DENX Software Engineering
*/
#undef DEBUG
#include <linux/aperture.h>
#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_address.h>
#include <linux/of_irq.h>
#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;
}
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 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 */ }
};
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 = 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 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");