--- /dev/null
+#include "radeonfb.h"
+
+#include <linux/slab.h>
+
+#include "../edid.h"
+
+static struct fb_var_screeninfo radeonfb_default_var = {
+ .xres = 640,
+ .yres = 480,
+ .xres_virtual = 640,
+ .yres_virtual = 480,
+ .bits_per_pixel = 8,
+ .red = { .length = 8 },
+ .green = { .length = 8 },
+ .blue = { .length = 8 },
+ .activate = FB_ACTIVATE_NOW,
+ .height = -1,
+ .width = -1,
+ .pixclock = 39721,
+ .left_margin = 40,
+ .right_margin = 24,
+ .upper_margin = 32,
+ .lower_margin = 11,
+ .hsync_len = 96,
+ .vsync_len = 2,
+ .vmode = FB_VMODE_NONINTERLACED
+};
+
+static char *radeon_get_mon_name(int type)
+{
+ char *pret = NULL;
+
+ 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;
+}
+
+
+#if defined(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)
+ */
+static int radeon_parse_montype_prop(struct device_node *dp, u8 **out_EDID,
+ int hdno)
+{
+ static char *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;
+ else if (!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;
+
+ tmp = kmemdup(pedid, EDID_LENGTH, GFP_KERNEL);
+ if (!tmp)
+ return mt;
+ *out_EDID = tmp;
+ return mt;
+}
+
+static int radeon_probe_OF_head(struct radeonfb_info *rinfo, int head_no,
+ u8 **out_EDID)
+{
+ struct device_node *dp;
+
+ pr_debug("radeon_probe_OF_head\n");
+
+ dp = rinfo->of_node;
+ while (dp == NULL)
+ return MT_NONE;
+
+ if (rinfo->has_CRTC2) {
+ const char *pname;
+ int len, second = 0;
+
+ dp = dp->child;
+ do {
+ if (!dp)
+ return MT_NONE;
+ pname = of_get_property(dp, "name", NULL);
+ if (!pname)
+ return MT_NONE;
+ len = strlen(pname);
+ pr_debug("head: %s (letter: %c, head_no: %d)\n",
+ pname, pname[len-1], head_no);
+ if (pname[len-1] == 'A' && head_no == 0) {
+ int mt = radeon_parse_montype_prop(dp, out_EDID, 0);
+ /* Maybe check for LVDS_GEN_CNTL here ? I need to check out
+ * what OF does when booting with lid closed
+ */
+ if (mt == MT_DFP && rinfo->is_mobility)
+ mt = MT_LCD;
+ return mt;
+ } else if (pname[len-1] == 'B' && head_no == 1)
+ return radeon_parse_montype_prop(dp, out_EDID, 1);
+ second = 1;
+ dp = dp->sibling;
+ } while(!second);
+ } else {
+ if (head_no > 0)
+ return MT_NONE;
+ return radeon_parse_montype_prop(dp, out_EDID, -1);
+ }
+ return MT_NONE;
+}
+#endif /* CONFIG_PPC || CONFIG_SPARC */
+
+
+static int radeon_get_panel_info_BIOS(struct radeonfb_info *rinfo)
+{
+ unsigned long tmp, tmp0;
+ char stmp[30];
+ int i;
+
+ if (!rinfo->bios_seg)
+ return 0;
+
+ if (!(tmp = BIOS_IN16(rinfo->fp_bios_start + 0x40))) {
+ printk(KERN_ERR "radeonfb: Failed to detect DFP panel info using BIOS\n");
+ rinfo->panel_info.pwr_delay = 200;
+ return 0;
+ }
+
+ for(i=0; i<24; i++)
+ stmp[i] = BIOS_IN8(tmp+i+1);
+ stmp[24] = 0;
+ printk("radeonfb: panel ID string: %s\n", stmp);
+ rinfo->panel_info.xres = BIOS_IN16(tmp + 25);
+ rinfo->panel_info.yres = BIOS_IN16(tmp + 27);
+ printk("radeonfb: detected LVDS panel size from BIOS: %dx%d\n",
+ rinfo->panel_info.xres, rinfo->panel_info.yres);
+
+ rinfo->panel_info.pwr_delay = BIOS_IN16(tmp + 44);
+ pr_debug("BIOS provided panel power delay: %d\n", rinfo->panel_info.pwr_delay);
+ if (rinfo->panel_info.pwr_delay > 2000 || rinfo->panel_info.pwr_delay <= 0)
+ rinfo->panel_info.pwr_delay = 2000;
+
+ /*
+ * Some panels only work properly with some divider combinations
+ */
+ rinfo->panel_info.ref_divider = BIOS_IN16(tmp + 46);
+ rinfo->panel_info.post_divider = BIOS_IN8(tmp + 48);
+ rinfo->panel_info.fbk_divider = BIOS_IN16(tmp + 49);
+ if (rinfo->panel_info.ref_divider != 0 &&
+ rinfo->panel_info.fbk_divider > 3) {
+ rinfo->panel_info.use_bios_dividers = 1;
+ printk(KERN_INFO "radeondb: BIOS provided dividers will be used\n");
+ pr_debug("ref_divider = %x\n", rinfo->panel_info.ref_divider);
+ pr_debug("post_divider = %x\n", rinfo->panel_info.post_divider);
+ pr_debug("fbk_divider = %x\n", rinfo->panel_info.fbk_divider);
+ }
+ pr_debug("Scanning BIOS table ...\n");
+ for(i=0; i<32; i++) {
+ tmp0 = BIOS_IN16(tmp+64+i*2);
+ if (tmp0 == 0)
+ break;
+ pr_debug(" %d x %d\n", BIOS_IN16(tmp0), BIOS_IN16(tmp0+2));
+ if ((BIOS_IN16(tmp0) == rinfo->panel_info.xres) &&
+ (BIOS_IN16(tmp0+2) == rinfo->panel_info.yres)) {
+ rinfo->panel_info.hblank = (BIOS_IN16(tmp0+17) - BIOS_IN16(tmp0+19)) * 8;
+ rinfo->panel_info.hOver_plus = ((BIOS_IN16(tmp0+21) -
+ BIOS_IN16(tmp0+19) -1) * 8) & 0x7fff;
+ rinfo->panel_info.hSync_width = BIOS_IN8(tmp0+23) * 8;
+ rinfo->panel_info.vblank = BIOS_IN16(tmp0+24) - BIOS_IN16(tmp0+26);
+ rinfo->panel_info.vOver_plus = (BIOS_IN16(tmp0+28) & 0x7ff) - BIOS_IN16(tmp0+26);
+ rinfo->panel_info.vSync_width = (BIOS_IN16(tmp0+28) & 0xf800) >> 11;
+ rinfo->panel_info.clock = BIOS_IN16(tmp0+9);
+ /* Assume high active syncs for now until ATI tells me more... maybe we
+ * can probe register values here ?
+ */
+ rinfo->panel_info.hAct_high = 1;
+ rinfo->panel_info.vAct_high = 1;
+ /* Mark panel infos valid */
+ rinfo->panel_info.valid = 1;
+
+ pr_debug("Found panel in BIOS table:\n");
+ pr_debug(" hblank: %d\n", rinfo->panel_info.hblank);
+ pr_debug(" hOver_plus: %d\n", rinfo->panel_info.hOver_plus);
+ pr_debug(" hSync_width: %d\n", rinfo->panel_info.hSync_width);
+ pr_debug(" vblank: %d\n", rinfo->panel_info.vblank);
+ pr_debug(" vOver_plus: %d\n", rinfo->panel_info.vOver_plus);
+ pr_debug(" vSync_width: %d\n", rinfo->panel_info.vSync_width);
+ pr_debug(" clock: %d\n", rinfo->panel_info.clock);
+
+ return 1;
+ }
+ }
+ pr_debug("Didn't find panel in BIOS table !\n");
+
+ return 0;
+}
+
+/* Try to extract the connector informations from the BIOS. This
+ * doesn't quite work yet, but it's output is still useful for
+ * debugging
+ */
+static void radeon_parse_connector_info(struct radeonfb_info *rinfo)
+{
+ int offset, chips, connectors, tmp, i, conn, type;
+
+ static char* __conn_type_table[16] = {
+ "NONE", "Proprietary", "CRT", "DVI-I", "DVI-D", "Unknown", "Unknown",
+ "Unknown", "Unknown", "Unknown", "Unknown", "Unknown", "Unknown",
+ "Unknown", "Unknown", "Unknown"
+ };
+
+ if (!rinfo->bios_seg)
+ return;
+
+ 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"
+ */
+static int 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) {
+ unsigned long ulOrigVCLK_ECP_CNTL;
+ unsigned long ulOrigDAC_CNTL;
+ unsigned long ulOrigDAC_EXT_CNTL;
+ unsigned long ulOrigCRTC_EXT_CNTL;
+ unsigned long ulData;
+ unsigned long ulMask;
+
+ ulOrigVCLK_ECP_CNTL = INPLL(VCLK_ECP_CNTL);
+
+ ulData = ulOrigVCLK_ECP_CNTL;
+ ulData &= ~(PIXCLK_ALWAYS_ONb
+ | PIXCLK_DAC_ALWAYS_ONb);
+ ulMask = ~(PIXCLK_ALWAYS_ONb
+ | PIXCLK_DAC_ALWAYS_ONb);
+ OUTPLLP(VCLK_ECP_CNTL, ulData, ulMask);
+
+ ulOrigCRTC_EXT_CNTL = INREG(CRTC_EXT_CNTL);
+ ulData = ulOrigCRTC_EXT_CNTL;
+ ulData |= CRTC_CRT_ON;
+ OUTREG(CRTC_EXT_CNTL, ulData);
+
+ ulOrigDAC_EXT_CNTL = INREG(DAC_EXT_CNTL);
+ ulData = ulOrigDAC_EXT_CNTL;
+ ulData &= ~DAC_FORCE_DATA_MASK;
+ ulData |= (DAC_FORCE_BLANK_OFF_EN
+ |DAC_FORCE_DATA_EN
+ |DAC_FORCE_DATA_SEL_MASK);
+ if ((rinfo->family == CHIP_FAMILY_RV250) ||
+ (rinfo->family == CHIP_FAMILY_RV280))
+ ulData |= (0x01b6 << DAC_FORCE_DATA_SHIFT);
+ else
+ ulData |= (0x01ac << DAC_FORCE_DATA_SHIFT);
+
+ OUTREG(DAC_EXT_CNTL, ulData);
+
+ ulOrigDAC_CNTL = INREG(DAC_CNTL);
+ ulData = ulOrigDAC_CNTL;
+ ulData |= DAC_CMP_EN;
+ ulData &= ~(DAC_RANGE_CNTL_MASK
+ | DAC_PDWN);
+ ulData |= 0x2;
+ OUTREG(DAC_CNTL, ulData);
+
+ mdelay(1);
+
+ ulData = INREG(DAC_CNTL);
+ connected = (DAC_CMP_OUTPUT & ulData) ? 1 : 0;
+
+ ulData = ulOrigVCLK_ECP_CNTL;
+ ulMask = 0xFFFFFFFFL;
+ OUTPLLP(VCLK_ECP_CNTL, ulData, ulMask);
+
+ OUTREG(DAC_CNTL, ulOrigDAC_CNTL );
+ OUTREG(DAC_EXT_CNTL, ulOrigDAC_EXT_CNTL );
+ OUTREG(CRTC_EXT_CNTL, ulOrigCRTC_EXT_CNTL);
+ }
+
+ return connected ? MT_CRT : MT_NONE;
+}
+
+/*
+ * Parse the "monitor_layout" string if any. This code is mostly
+ * copied from XFree's radeon driver
+ */
+static int radeon_parse_monitor_layout(struct radeonfb_info *rinfo,
+ const char *monitor_layout)
+{
+ char s1[5], s2[5];
+ int i = 0, second = 0;
+ const char *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++;
+ }
+
+ if (i > 4)
+ i = 4;
+
+ } while (*s++);
+ if (second)
+ s2[i] = 0;
+ else {
+ s1[i] = 0;
+ s2[0] = 0;
+ }
+ if (strcmp(s1, "CRT") == 0)
+ rinfo->mon1_type = MT_CRT;
+ else if (strcmp(s1, "TMDS") == 0)
+ rinfo->mon1_type = MT_DFP;
+ else if (strcmp(s1, "LVDS") == 0)
+ rinfo->mon1_type = MT_LCD;
+
+ if (strcmp(s2, "CRT") == 0)
+ rinfo->mon2_type = MT_CRT;
+ else if (strcmp(s2, "TMDS") == 0)
+ rinfo->mon2_type = MT_DFP;
+ else if (strcmp(s2, "LVDS") == 0)
+ rinfo->mon2_type = MT_LCD;
+
+ return 1;
+}
+
+/*
+ * 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,
+ const char *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 ...)
+ */
+
+ pr_debug("Starting monitor auto detection...\n");
+
+#if defined(DEBUG) && defined(CONFIG_FB_RADEON_I2C)
+ {
+ u8 *EDIDs[4] = { NULL, NULL, NULL, NULL };
+ int mon_types[4] = {MT_NONE, MT_NONE, MT_NONE, MT_NONE};
+ int i;
+
+ for (i = 0; i < 4; i++)
+ mon_types[i] = radeon_probe_i2c_connector(rinfo,
+ i+1, &EDIDs[i]);
+ }
+#endif /* DEBUG */
+ /*
+ * Old single head cards
+ */
+ if (!rinfo->has_CRTC2) {
+#if defined(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++) {
+ unsigned int tmp0;
+
+ if (!BIOS_IN8(tmp + i*2) && i > 1)
+ break;
+ tmp0 = BIOS_IN16(tmp + i*2);
+ if ((!(tmp0 & 0x01)) && (((tmp0 >> 8) & 0x0f) == ddc_dvi)) {
+ rinfo->reversed_DAC = 1;
+ printk(KERN_INFO "radeonfb: Reversed DACs detected\n");
+ }
+ if ((((tmp0 >> 8) & 0x0f) == ddc_dvi) && ((tmp0 >> 4) & 0x01)) {
+ rinfo->reversed_TMDS = 1;
+ printk(KERN_INFO "radeonfb: Reversed TMDS detected\n");
+ }
+ }
+ }
+
+ /*
+ * Probe primary head (DVI or laptop internal panel)
+ */
+#if defined(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_crt2,
+ &rinfo->mon1_EDID);
+ if (rinfo->mon1_type != MT_NONE)
+ ddc_crt2_used = 1;
+ }
+#endif /* CONFIG_FB_RADEON_I2C */
+ if (rinfo->mon1_type == MT_NONE && rinfo->is_mobility &&
+ ((rinfo->bios_seg && (INREG(BIOS_4_SCRATCH) & 4))
+ || (INREG(LVDS_GEN_CNTL) & LVDS_ON))) {
+ rinfo->mon1_type = MT_LCD;
+ printk("Non-DDC laptop panel detected\n");
+ }
+ if (rinfo->mon1_type == MT_NONE)
+ rinfo->mon1_type = radeon_crt_is_connected(rinfo, rinfo->reversed_DAC);
+
+ /*
+ * Probe secondary head (mostly VGA, can be DVI)
+ */
+#if defined(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 functions applyes 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
+ */
+static void 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;
+
+ printk(KERN_DEBUG "radeonfb: Using Firmware dividers 0x%08x "
+ "from PPLL %d\n",
+ rinfo->panel_info.fbk_divider |
+ (rinfo->panel_info.post_divider << 16),
+ ppll_div_sel);
+ }
+#endif /* CONFIG_PPC */
+}
+
+
+/*
+ * 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
+ */
+static void 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;
+}
+
+static void radeon_videomode_to_var(struct fb_var_screeninfo *var,
+ const struct fb_videomode *mode)
+{
+ var->xres = mode->xres;
+ var->yres = mode->yres;
+ var->xres_virtual = mode->xres;
+ var->yres_virtual = mode->yres;
+ var->xoffset = 0;
+ var->yoffset = 0;
+ var->pixclock = mode->pixclock;
+ var->left_margin = mode->left_margin;
+ var->right_margin = mode->right_margin;
+ var->upper_margin = mode->upper_margin;
+ var->lower_margin = mode->lower_margin;
+ var->hsync_len = mode->hsync_len;
+ var->vsync_len = mode->vsync_len;
+ var->sync = mode->sync;
+ var->vmode = mode->vmode;
+}
+
+#ifdef CONFIG_PPC_PSERIES
+static int is_powerblade(const char *model)
+{
+ struct device_node *root;
+ const char* cp;
+ int len, l, rc = 0;
+
+ root = of_find_node_by_path("/");
+ if (root && model) {
+ l = strlen(model);
+ cp = of_get_property(root, "model", &len);
+ if (cp)
+ rc = memcmp(model, cp, min(len, l)) == 0;
+ of_node_put(root);
+ }
+ return rc;
+}
+#endif
+
+/*
+ * 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, const char *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;
+
+ pr_debug("Setting up default mode based on panel info\n");
+ var->xres = rinfo->panel_info.xres;
+ var->yres = rinfo->panel_info.yres;
+ var->xres_virtual = rinfo->panel_info.xres;
+ var->yres_virtual = rinfo->panel_info.yres;
+ var->xoffset = var->yoffset = 0;
+ var->bits_per_pixel = 8;
+ var->pixclock = 100000000 / rinfo->panel_info.clock;
+ var->left_margin = (rinfo->panel_info.hblank - rinfo->panel_info.hOver_plus
+ - rinfo->panel_info.hSync_width);
+ var->right_margin = rinfo->panel_info.hOver_plus;
+ var->upper_margin = (rinfo->panel_info.vblank - rinfo->panel_info.vOver_plus
+ - rinfo->panel_info.vSync_width);
+ var->lower_margin = rinfo->panel_info.vOver_plus;
+ var->hsync_len = rinfo->panel_info.hSync_width;
+ var->vsync_len = rinfo->panel_info.vSync_width;
+ var->sync = 0;
+ if (rinfo->panel_info.hAct_high)
+ var->sync |= FB_SYNC_HOR_HIGH_ACT;
+ if (rinfo->panel_info.vAct_high)
+ var->sync |= FB_SYNC_VERT_HIGH_ACT;
+ var->vmode = 0;
+ has_default_mode = 1;
+ }
+
+ /*
+ * 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];
+
+ pr_debug("Guessing panel info...\n");
+ if (rinfo->panel_info.xres == 0 || rinfo->panel_info.yres == 0) {
+ u32 tmp = INREG(FP_HORZ_STRETCH) & HORZ_PANEL_SIZE;
+ rinfo->panel_info.xres = ((tmp >> HORZ_PANEL_SHIFT) + 1) * 8;
+ tmp = INREG(FP_VERT_STRETCH) & VERT_PANEL_SIZE;
+ rinfo->panel_info.yres = (tmp >> VERT_PANEL_SHIFT) + 1;
+ }
+ if (rinfo->panel_info.xres == 0 || rinfo->panel_info.yres == 0) {
+ printk(KERN_WARNING "radeonfb: Can't find panel size, going back to CRT\n");
+ rinfo->mon1_type = MT_CRT;
+ goto pickup_default;
+ }
+ printk(KERN_WARNING "radeonfb: Assuming panel size %dx%d\n",
+ rinfo->panel_info.xres, rinfo->panel_info.yres);
+ modedb = rinfo->mon1_modedb;
+ dbsize = rinfo->mon1_dbsize;
+ snprintf(modename, 31, "%dx%d", rinfo->panel_info.xres, rinfo->panel_info.yres);
+ if (fb_find_mode(&info->var, info, modename,
+ modedb, dbsize, NULL, 8) == 0) {
+ printk(KERN_WARNING "radeonfb: Can't find mode for panel size, going back to CRT\n");
+ rinfo->mon1_type = MT_CRT;
+ goto pickup_default;
+ }
+ has_default_mode = 1;
+ radeon_var_to_panel_info(rinfo, &info->var);
+ }
+
+ pickup_default:
+ /*
+ * Apply passed-in mode option if any
+ */
+ if (mode_option) {
+ if (fb_find_mode(&info->var, info, mode_option,
+ info->monspecs.modedb,
+ info->monspecs.modedb_len, NULL, 8) != 0)
+ has_default_mode = 1;
+ }
+
+#ifdef CONFIG_PPC_PSERIES
+ if (!has_default_mode && (
+ is_powerblade("IBM,8842") || /* JS20 */
+ is_powerblade("IBM,8844") || /* JS21 */
+ is_powerblade("IBM,7998") || /* JS12/JS21/JS22 */
+ is_powerblade("IBM,0792") || /* QS21 */
+ is_powerblade("IBM,0793") /* QS22 */
+ )) {
+ printk("Falling back to 800x600 on JSxx hardware\n");
+ if (fb_find_mode(&info->var, info, "800x600@60",
+ info->monspecs.modedb,
+ info->monspecs.modedb_len, NULL, 8) != 0)
+ has_default_mode = 1;
+ }
+#endif
+
+ /*
+ * 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 ;)
+ */
+static int radeon_compare_modes(const struct fb_var_screeninfo *var,
+ const struct fb_videomode *mode)
+{
+ int distance = 0;
+
+ distance = mode->yres - var->yres;
+ distance += (mode->xres - var->xres)/2;
+ return distance;
+}
+
+/*
+ * 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,
+ const struct fb_var_screeninfo *src)
+{
+ const struct fb_videomode *db = vesa_modes;
+ int i, dbsize = 34;
+ int has_rmx, native_db = 0;
+ int distance = INT_MAX;
+ const struct 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;
+}
Code Review / kvmfornfv.git / blobdiff