diff options
Diffstat (limited to 'drivers/video/fbdev/aty/radeon_monitor.c')
| -rw-r--r-- | drivers/video/fbdev/aty/radeon_monitor.c | 1051 |
1 files changed, 1051 insertions, 0 deletions
diff --git a/drivers/video/fbdev/aty/radeon_monitor.c b/drivers/video/fbdev/aty/radeon_monitor.c new file mode 100644 index 000000000..df55e23b7 --- /dev/null +++ b/drivers/video/fbdev/aty/radeon_monitor.c @@ -0,0 +1,1051 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "radeonfb.h" + +#include <linux/slab.h> + +#include "../edid.h" + +static const 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 i; + + 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) { +#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 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 + */ +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; +} |