switch (type) { case MT_NONE:
pret = "no"; break; case MT_CRT:
pret = "CRT"; break; case MT_DFP:
pret = "DFP"; break; case MT_LCD:
pret = "LCD"; break; case MT_CTV:
pret = "CTV"; break; case MT_STV:
pret = "STV"; break;
}
return pret;
}
#ifdefined(CONFIG_PPC) || defined(CONFIG_SPARC) /* * Try to find monitor informations & EDID data out of the Open Firmware * device-tree. This also contains some "hacks" to work around a few machine * models with broken OF probing by hard-coding known EDIDs for some Mac * laptops internal LVDS panel. (XXX: not done yet)
*/ staticint radeon_parse_montype_prop(struct device_node *dp, u8 **out_EDID, int hdno)
{ staticchar *propnames[] = { "DFP,EDID", "LCD,EDID", "EDID", "EDID1", "EDID2", NULL }; const u8 *pedid = NULL; const u8 *pmt = NULL;
u8 *tmp; int i, mt = MT_NONE;
pr_debug("analyzing OF properties...\n");
pmt = of_get_property(dp, "display-type", NULL); if (!pmt) return MT_NONE;
pr_debug("display-type: %s\n", pmt); /* OF says "LCD" for DFP as well, we discriminate from the caller of this * function
*/ if (!strcmp(pmt, "LCD") || !strcmp(pmt, "DFP"))
mt = MT_DFP; elseif (!strcmp(pmt, "CRT"))
mt = MT_CRT; else { if (strcmp(pmt, "NONE") != 0)
printk(KERN_WARNING "radeonfb: Unknown OF display-type: %s\n",
pmt); return MT_NONE;
}
for (i = 0; propnames[i] != NULL; ++i) {
pedid = of_get_property(dp, propnames[i], NULL); if (pedid != NULL) break;
} /* We didn't find the EDID in the leaf node, some cards will actually * put EDID1/EDID2 in the parent, look for these (typically M6 tipb). * single-head cards have hdno == -1 and skip this step
*/ if (pedid == NULL && dp->parent && (hdno != -1))
pedid = of_get_property(dp->parent,
(hdno == 0) ? "EDID1" : "EDID2", NULL); if (pedid == NULL && dp->parent && (hdno == 0))
pedid = of_get_property(dp->parent, "EDID", NULL); if (pedid == NULL) return mt;
/* Try to extract the connector informations from the BIOS. This * doesn't quite work yet, but it's output is still useful for * debugging
*/ staticvoid radeon_parse_connector_info(struct radeonfb_info *rinfo)
{ int offset, chips, connectors, tmp, i, conn, type;
offset = BIOS_IN16(rinfo->fp_bios_start + 0x50); if (offset == 0) {
printk(KERN_WARNING "radeonfb: No connector info table detected\n"); return;
}
/* Don't do much more at this point but displaying the data if * DEBUG is enabled
*/
chips = BIOS_IN8(offset++) >> 4;
pr_debug("%d chips in connector info\n", chips); for (i = 0; i < chips; i++) {
tmp = BIOS_IN8(offset++);
connectors = tmp & 0x0f;
pr_debug(" - chip %d has %d connectors\n", tmp >> 4, connectors); for (conn = 0; ; conn++) {
tmp = BIOS_IN16(offset); if (tmp == 0) break;
offset += 2;
type = (tmp >> 12) & 0x0f;
pr_debug(" * connector %d of type %d (%s) : %04x\n",
conn, type, __conn_type_table[type], tmp);
}
}
}
/* * Probe physical connection of a CRT. This code comes from XFree * as well and currently is only implemented for the CRT DAC, the * code for the TVDAC is commented out in XFree as "non working"
*/ staticint radeon_crt_is_connected(struct radeonfb_info *rinfo, int is_crt_dac)
{ int connected = 0;
/* the monitor either wasn't connected or it is a non-DDC CRT. * try to probe it
*/ if (is_crt_dac) { unsignedlong ulOrigVCLK_ECP_CNTL; unsignedlong ulOrigDAC_CNTL; unsignedlong ulOrigDAC_EXT_CNTL; unsignedlong ulOrigCRTC_EXT_CNTL; unsignedlong ulData; unsignedlong ulMask;
/* * Parse the "monitor_layout" string if any. This code is mostly * copied from XFree's radeon driver
*/ staticint radeon_parse_monitor_layout(struct radeonfb_info *rinfo, constchar *monitor_layout)
{ char s1[5], s2[5]; int i = 0, second = 0; constchar *s;
if (!monitor_layout) return 0;
s = monitor_layout; do { switch(*s) { case',':
s1[i] = '\0';
i = 0;
second = 1; break; case' ': case'\0': break; default: if (i > 4) break; if (second)
s2[i] = *s; else
s1[i] = *s;
i++;
}
/* * Probe display on both primary and secondary card's connector (if any) * by various available techniques (i2c, OF device tree, BIOS, ...) and * try to retrieve EDID. The algorithm here comes from XFree's radeon * driver
*/ void radeon_probe_screens(struct radeonfb_info *rinfo, constchar *monitor_layout, int ignore_edid)
{ #ifdef CONFIG_FB_RADEON_I2C int ddc_crt2_used = 0; #endif int tmp, i;
radeon_parse_connector_info(rinfo);
if (radeon_parse_monitor_layout(rinfo, monitor_layout)) {
/* * If user specified a monitor_layout option, use it instead * of auto-detecting. Maybe we should only use this argument * on the first radeon card probed or provide a way to specify * a layout for each card ?
*/
pr_debug("Using specified monitor layout: %s", monitor_layout); #ifdef CONFIG_FB_RADEON_I2C if (!ignore_edid) { if (rinfo->mon1_type != MT_NONE) if (!radeon_probe_i2c_connector(rinfo, ddc_dvi, &rinfo->mon1_EDID)) {
radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon1_EDID);
ddc_crt2_used = 1;
} if (rinfo->mon2_type != MT_NONE) if (!radeon_probe_i2c_connector(rinfo, ddc_vga, &rinfo->mon2_EDID) &&
!ddc_crt2_used)
radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon2_EDID);
} #endif/* CONFIG_FB_RADEON_I2C */ if (rinfo->mon1_type == MT_NONE) { if (rinfo->mon2_type != MT_NONE) {
rinfo->mon1_type = rinfo->mon2_type;
rinfo->mon1_EDID = rinfo->mon2_EDID;
} else {
rinfo->mon1_type = MT_CRT;
printk(KERN_INFO "radeonfb: No valid monitor, assuming CRT on first port\n");
}
rinfo->mon2_type = MT_NONE;
rinfo->mon2_EDID = NULL;
}
} else { /* * Auto-detecting display type (well... trying to ...)
*/
for (i = 0; i < 4; i++)
radeon_probe_i2c_connector(rinfo, i + 1, &EDIDs[i]);
} #endif/* DEBUG */ /* * Old single head cards
*/ if (!rinfo->has_CRTC2) { #ifdefined(CONFIG_PPC) || defined(CONFIG_SPARC) if (rinfo->mon1_type == MT_NONE)
rinfo->mon1_type = radeon_probe_OF_head(rinfo, 0,
&rinfo->mon1_EDID); #endif/* CONFIG_PPC || CONFIG_SPARC */ #ifdef CONFIG_FB_RADEON_I2C if (rinfo->mon1_type == MT_NONE)
rinfo->mon1_type =
radeon_probe_i2c_connector(rinfo, ddc_dvi,
&rinfo->mon1_EDID); if (rinfo->mon1_type == MT_NONE)
rinfo->mon1_type =
radeon_probe_i2c_connector(rinfo, ddc_vga,
&rinfo->mon1_EDID); if (rinfo->mon1_type == MT_NONE)
rinfo->mon1_type =
radeon_probe_i2c_connector(rinfo, ddc_crt2,
&rinfo->mon1_EDID); #endif/* CONFIG_FB_RADEON_I2C */ if (rinfo->mon1_type == MT_NONE)
rinfo->mon1_type = MT_CRT; goto bail;
}
/* * Check for cards with reversed DACs or TMDS controllers using BIOS
*/ if (rinfo->bios_seg &&
(tmp = BIOS_IN16(rinfo->fp_bios_start + 0x50))) { for (i = 1; i < 4; i++) { unsignedint tmp0;
/* * Probe secondary head (mostly VGA, can be DVI)
*/ #ifdefined(CONFIG_PPC) || defined(CONFIG_SPARC) if (rinfo->mon2_type == MT_NONE)
rinfo->mon2_type = radeon_probe_OF_head(rinfo, 1,
&rinfo->mon2_EDID); #endif/* CONFIG_PPC || defined(CONFIG_SPARC) */ #ifdef CONFIG_FB_RADEON_I2C if (rinfo->mon2_type == MT_NONE)
rinfo->mon2_type = radeon_probe_i2c_connector(rinfo, ddc_vga,
&rinfo->mon2_EDID); if (rinfo->mon2_type == MT_NONE && !ddc_crt2_used)
rinfo->mon2_type = radeon_probe_i2c_connector(rinfo, ddc_crt2,
&rinfo->mon2_EDID); #endif/* CONFIG_FB_RADEON_I2C */ if (rinfo->mon2_type == MT_NONE)
rinfo->mon2_type = radeon_crt_is_connected(rinfo, !rinfo->reversed_DAC);
/* * If we only detected port 2, we swap them, if none detected, * assume CRT (maybe fallback to old BIOS_SCRATCH stuff ? or look * at FP registers ?)
*/ if (rinfo->mon1_type == MT_NONE) { if (rinfo->mon2_type != MT_NONE) {
rinfo->mon1_type = rinfo->mon2_type;
rinfo->mon1_EDID = rinfo->mon2_EDID;
} else
rinfo->mon1_type = MT_CRT;
rinfo->mon2_type = MT_NONE;
rinfo->mon2_EDID = NULL;
}
/* * Deal with reversed TMDS
*/ if (rinfo->reversed_TMDS) { /* Always keep internal TMDS as primary head */ if (rinfo->mon1_type == MT_DFP || rinfo->mon2_type == MT_DFP) { int tmp_type = rinfo->mon1_type;
u8 *tmp_EDID = rinfo->mon1_EDID;
rinfo->mon1_type = rinfo->mon2_type;
rinfo->mon1_EDID = rinfo->mon2_EDID;
rinfo->mon2_type = tmp_type;
rinfo->mon2_EDID = tmp_EDID; if (rinfo->mon1_type == MT_CRT || rinfo->mon2_type == MT_CRT)
rinfo->reversed_DAC ^= 1;
}
}
} if (ignore_edid) {
kfree(rinfo->mon1_EDID);
rinfo->mon1_EDID = NULL;
kfree(rinfo->mon2_EDID);
rinfo->mon2_EDID = NULL;
}
bail:
printk(KERN_INFO "radeonfb: Monitor 1 type %s found\n",
radeon_get_mon_name(rinfo->mon1_type)); if (rinfo->mon1_EDID)
printk(KERN_INFO "radeonfb: EDID probed\n"); if (!rinfo->has_CRTC2) return;
printk(KERN_INFO "radeonfb: Monitor 2 type %s found\n",
radeon_get_mon_name(rinfo->mon2_type)); if (rinfo->mon2_EDID)
printk(KERN_INFO "radeonfb: EDID probed\n");
}
/* * This function applies any arch/model/machine specific fixups * to the panel info. It may eventually alter EDID block as * well or whatever is specific to a given model and not probed * properly by the default code
*/ staticvoid radeon_fixup_panel_info(struct radeonfb_info *rinfo)
{ #ifdef CONFIG_PPC /* * LCD Flat panels should use fixed dividers, we enfore that on * PPC only for now...
*/ if (!rinfo->panel_info.use_bios_dividers && rinfo->mon1_type == MT_LCD
&& rinfo->is_mobility) { int ppll_div_sel;
u32 ppll_divn;
ppll_div_sel = INREG8(CLOCK_CNTL_INDEX + 1) & 0x3;
radeon_pll_errata_after_index(rinfo);
ppll_divn = INPLL(PPLL_DIV_0 + ppll_div_sel);
rinfo->panel_info.ref_divider = rinfo->pll.ref_div;
rinfo->panel_info.fbk_divider = ppll_divn & 0x7ff;
rinfo->panel_info.post_divider = (ppll_divn >> 16) & 0x7;
rinfo->panel_info.use_bios_dividers = 1;
/* * Fill up panel infos from a mode definition, either returned by the EDID * or from the default mode when we can't do any better
*/ staticvoid radeon_var_to_panel_info(struct radeonfb_info *rinfo, struct fb_var_screeninfo *var)
{
rinfo->panel_info.xres = var->xres;
rinfo->panel_info.yres = var->yres;
rinfo->panel_info.clock = 100000000 / var->pixclock;
rinfo->panel_info.hOver_plus = var->right_margin;
rinfo->panel_info.hSync_width = var->hsync_len;
rinfo->panel_info.hblank = var->left_margin +
(var->right_margin + var->hsync_len);
rinfo->panel_info.vOver_plus = var->lower_margin;
rinfo->panel_info.vSync_width = var->vsync_len;
rinfo->panel_info.vblank = var->upper_margin +
(var->lower_margin + var->vsync_len);
rinfo->panel_info.hAct_high =
(var->sync & FB_SYNC_HOR_HIGH_ACT) != 0;
rinfo->panel_info.vAct_high =
(var->sync & FB_SYNC_VERT_HIGH_ACT) != 0;
rinfo->panel_info.valid = 1; /* We use a default of 200ms for the panel power delay, * I need to have a real schedule() instead of mdelay's in the panel code. * we might be possible to figure out a better power delay either from * MacOS OF tree or from the EDID block (proprietary extensions ?)
*/
rinfo->panel_info.pwr_delay = 200;
}
/* * Build the modedb for head 1 (head 2 will come later), check panel infos * from either BIOS or EDID, and pick up the default mode
*/ void radeon_check_modes(struct radeonfb_info *rinfo, constchar *mode_option)
{ struct fb_info * info = rinfo->info; int has_default_mode = 0;
/* * Fill default var first
*/
info->var = radeonfb_default_var;
INIT_LIST_HEAD(&info->modelist);
/* * First check out what BIOS has to say
*/ if (rinfo->mon1_type == MT_LCD)
radeon_get_panel_info_BIOS(rinfo);
/* * Parse EDID detailed timings and deduce panel infos if any. Right now * we only deal with first entry returned by parse_EDID, we may do better * some day...
*/ if (!rinfo->panel_info.use_bios_dividers && rinfo->mon1_type != MT_CRT
&& rinfo->mon1_EDID) { struct fb_var_screeninfo var;
pr_debug("Parsing EDID data for panel info\n"); if (fb_parse_edid(rinfo->mon1_EDID, &var) == 0) { if (var.xres >= rinfo->panel_info.xres &&
var.yres >= rinfo->panel_info.yres)
radeon_var_to_panel_info(rinfo, &var);
}
}
/* * Do any additional platform/arch fixups to the panel infos
*/
radeon_fixup_panel_info(rinfo);
/* * If we have some valid panel infos, we setup the default mode based on * those
*/ if (rinfo->mon1_type != MT_CRT && rinfo->panel_info.valid) { struct fb_var_screeninfo *var = &info->var;
/* * Now build modedb from EDID
*/ if (rinfo->mon1_EDID) {
fb_edid_to_monspecs(rinfo->mon1_EDID, &info->monspecs);
fb_videomode_to_modelist(info->monspecs.modedb,
info->monspecs.modedb_len,
&info->modelist);
rinfo->mon1_modedb = info->monspecs.modedb;
rinfo->mon1_dbsize = info->monspecs.modedb_len;
}
/* * Finally, if we don't have panel infos we need to figure some (or * we try to read it from card), we try to pick a default mode * and create some panel infos. Whatever...
*/ if (rinfo->mon1_type != MT_CRT && !rinfo->panel_info.valid) { struct fb_videomode *modedb; int dbsize; char modename[32];
/* * Still no mode, let's pick up a default from the db
*/ if (!has_default_mode && info->monspecs.modedb != NULL) { struct fb_monspecs *specs = &info->monspecs; struct fb_videomode *modedb = NULL;
/* get preferred timing */ if (specs->misc & FB_MISC_1ST_DETAIL) { int i;
for (i = 0; i < specs->modedb_len; i++) { if (specs->modedb[i].flag & FB_MODE_IS_FIRST) {
modedb = &specs->modedb[i]; break;
}
}
} else { /* otherwise, get first mode in database */
modedb = &specs->modedb[0];
} if (modedb != NULL) {
info->var.bits_per_pixel = 8;
radeon_videomode_to_var(&info->var, modedb);
has_default_mode = 1;
}
} if (1) { struct fb_videomode mode; /* Make sure that whatever mode got selected is actually in the * modelist or the kernel may die
*/
fb_var_to_videomode(&mode, &info->var);
fb_add_videomode(&mode, &info->modelist);
}
}
/* * The code below is used to pick up a mode in check_var and * set_var. It should be made generic
*/
/* * This is used when looking for modes. We assign a "distance" value * to a mode in the modedb depending how "close" it is from what we * are looking for. * Currently, we don't compare that much, we could do better but * the current fbcon doesn't quite mind ;)
*/ staticint radeon_compare_modes(conststruct fb_var_screeninfo *var, conststruct fb_videomode *mode)
{ int distance = 0;
/* * This function is called by check_var, it gets the passed in mode parameter, and * outputs a valid mode matching the passed-in one as closely as possible. * We need something better ultimately. Things like fbcon basically pass us out * current mode with xres/yres hacked, while things like XFree will actually * produce a full timing that we should respect as much as possible. * * This is why I added the FB_ACTIVATE_FIND that is used by fbcon. Without this, * we do a simple spec match, that's all. With it, we actually look for a mode in * either our monitor modedb or the vesa one if none *
*/ int radeon_match_mode(struct radeonfb_info *rinfo, struct fb_var_screeninfo *dest, conststruct fb_var_screeninfo *src)
{ conststruct fb_videomode *db = vesa_modes; int i, dbsize = 34; int has_rmx, native_db = 0; int distance = INT_MAX; conststruct fb_videomode *candidate = NULL;
/* Start with a copy of the requested mode */
memcpy(dest, src, sizeof(struct fb_var_screeninfo));
/* Check if we have a modedb built from EDID */ if (rinfo->mon1_modedb) {
db = rinfo->mon1_modedb;
dbsize = rinfo->mon1_dbsize;
native_db = 1;
}
/* Check if we have a scaler allowing any fancy mode */
has_rmx = rinfo->mon1_type == MT_LCD || rinfo->mon1_type == MT_DFP;
/* If we have a scaler and are passed FB_ACTIVATE_TEST or * FB_ACTIVATE_NOW, just do basic checking and return if the * mode match
*/ if ((src->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_TEST ||
(src->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) { /* We don't have an RMX, validate timings. If we don't have * monspecs, we should be paranoid and not let use go above * 640x480-60, but I assume userland knows what it's doing here * (though I may be proven wrong...)
*/ if (has_rmx == 0 && rinfo->mon1_modedb) if (fb_validate_mode((struct fb_var_screeninfo *)src, rinfo->info)) return -EINVAL; return 0;
}
/* Now look for a mode in the database */ while (db) { for (i = 0; i < dbsize; i++) { int d;
if (db[i].yres < src->yres) continue; if (db[i].xres < src->xres) continue;
d = radeon_compare_modes(src, &db[i]); /* If the new mode is at least as good as the previous one, * then it's our new candidate
*/ if (d < distance) {
candidate = &db[i];
distance = d;
}
}
db = NULL; /* If we have a scaler, we allow any mode from the database */ if (native_db && has_rmx) {
db = vesa_modes;
dbsize = 34;
native_db = 0;
}
}
/* If we have found a match, return it */ if (candidate != NULL) {
radeon_videomode_to_var(dest, candidate); return 0;
}
/* If we haven't and don't have a scaler, fail */ if (!has_rmx) return -EINVAL;
return 0;
}
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