739 lines
23 KiB
C
739 lines
23 KiB
C
#include "radeonfb.h"
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#include "wait.h"
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#include "edid.h"
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#include "driver_mem.h"
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#include "bas_printf.h"
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#include "bas_string.h"
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// #define DEBUG
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#include "debug.h"
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#ifndef INT_MAX
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#define INT_MAX ((int) (~0U >> 1))
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#endif
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static struct fb_var_screeninfo radeonfb_default_var =
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{
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.xres = 640,
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.yres = 480,
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.xres_virtual = 640,
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.yres_virtual = 480,
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.bits_per_pixel = 8,
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.red = { .length = 8 },
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.green = { .length = 8 },
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.blue = { .length = 8 },
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.activate = FB_ACTIVATE_NOW,
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.height = -1,
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.width = -1,
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.pixclock = 39721,
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.left_margin = 40,
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.right_margin = 24,
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.upper_margin = 32,
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.lower_margin = 11,
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.hsync_len = 96,
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.vsync_len = 2,
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.vmode = FB_VMODE_NONINTERLACED
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};
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char *radeon_get_mon_name(int type)
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{
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char *pret = NULL;
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switch(type)
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{
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case MT_NONE:
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pret = "no";
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break;
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case MT_CRT:
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pret = "CRT";
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break;
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case MT_DFP:
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pret = "DFP";
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break;
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case MT_LCD:
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pret = "LCD";
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break;
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case MT_CTV:
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pret = "CTV";
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break;
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case MT_STV:
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pret = "STV";
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break;
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}
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return pret;
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}
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/*
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* Probe physical connection of a CRT. This code comes from XFree
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* as well and currently is only implemented for the CRT DAC, the
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* code for the TVDAC is commented out in XFree as "non working"
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*/
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static int radeon_crt_is_connected(struct radeonfb_info *rinfo, int is_crt_dac)
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{
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int connected = 0;
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/*
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* the monitor either wasn't connected or it is a non-DDC CRT.
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* try to probe it
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*/
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if (is_crt_dac)
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{
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unsigned long ulOrigVCLK_ECP_CNTL;
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unsigned long ulOrigDAC_CNTL;
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unsigned long ulOrigDAC_EXT_CNTL;
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unsigned long ulOrigCRTC_EXT_CNTL;
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unsigned long ulData;
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unsigned long ulMask;
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ulOrigVCLK_ECP_CNTL = INPLL(VCLK_ECP_CNTL);
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ulData = ulOrigVCLK_ECP_CNTL;
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ulData &= ~(PIXCLK_ALWAYS_ONb | PIXCLK_DAC_ALWAYS_ONb);
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ulMask = ~(PIXCLK_ALWAYS_ONb | PIXCLK_DAC_ALWAYS_ONb);
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OUTPLLP(VCLK_ECP_CNTL, ulData, ulMask);
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ulOrigCRTC_EXT_CNTL = INREG(CRTC_EXT_CNTL);
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ulData = ulOrigCRTC_EXT_CNTL;
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ulData |= CRTC_CRT_ON;
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OUTREG(CRTC_EXT_CNTL, ulData);
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ulOrigDAC_EXT_CNTL = INREG(DAC_EXT_CNTL);
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ulData = ulOrigDAC_EXT_CNTL;
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ulData &= ~DAC_FORCE_DATA_MASK;
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ulData |= (DAC_FORCE_BLANK_OFF_EN | DAC_FORCE_DATA_EN | DAC_FORCE_DATA_SEL_MASK);
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if ((rinfo->family == CHIP_FAMILY_RV250) || (rinfo->family == CHIP_FAMILY_RV280))
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ulData |= (0x01b6 << DAC_FORCE_DATA_SHIFT);
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else
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ulData |= (0x01ac << DAC_FORCE_DATA_SHIFT);
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OUTREG(DAC_EXT_CNTL, ulData);
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ulOrigDAC_CNTL = INREG(DAC_CNTL);
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ulData = ulOrigDAC_CNTL;
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ulData |= DAC_CMP_EN;
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ulData &= ~(DAC_RANGE_CNTL_MASK | DAC_PDWN);
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ulData |= 0x2;
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OUTREG(DAC_CNTL, ulData);
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wait_ms(1);
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ulData = INREG(DAC_CNTL);
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connected = (DAC_CMP_OUTPUT & ulData) ? 1 : 0;
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ulData = ulOrigVCLK_ECP_CNTL;
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ulMask = 0xFFFFFFFFL;
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OUTPLLP(VCLK_ECP_CNTL, ulData, ulMask);
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OUTREG(DAC_CNTL, ulOrigDAC_CNTL);
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OUTREG(DAC_EXT_CNTL, ulOrigDAC_EXT_CNTL );
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OUTREG(CRTC_EXT_CNTL, ulOrigCRTC_EXT_CNTL);
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}
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return connected ? MT_CRT : MT_NONE;
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}
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/*
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* Parse the "monitor_layout" string if any. This code is mostly
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* copied from XFree's radeon driver
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*/
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static int radeon_parse_monitor_layout(struct radeonfb_info *rinfo, const char *monitor_layout)
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{
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char s1[5], s2[5];
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int i = 0, second = 0;
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const char *s;
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if ((monitor_layout == NULL) || (*monitor_layout == '\0'))
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{
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dbg("monitor_layout missing\r\n");
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return 0;
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}
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s = monitor_layout;
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do
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{
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switch (*s)
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{
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case ',':
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s1[i] = '\0';
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i = 0;
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second = 1;
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break;
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case ' ':
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case '\0':
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break;
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default:
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if (i >= 4)
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break;
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if (second)
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s2[i] = *s;
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else
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s1[i] = *s;
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i++;
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break;
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}
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} while(*s++);
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if (second)
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s2[i] = '\0';
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else
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{
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s1[i] = '\0';
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s2[0] = '\0';
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}
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if (strcmp(s1, "CRT"))
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{
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rinfo->mon1_type = MT_CRT;
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dbg("monitor 1 set to CRT\r\n");
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}
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else if (strcmp(s1, "TMDS"))
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{
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rinfo->mon1_type = MT_DFP;
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dbg("monitor 1 set to TMDS\r\n");
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}
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else if (strcmp(s1, "LVDS"))
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{
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rinfo->mon1_type = MT_LCD;
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dbg("monitor 1 set to LVDS\r\n");
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}
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if (strcmp(s2, "CRT"))
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{
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rinfo->mon2_type = MT_CRT;
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dbg("monitor 2 set to CRT\r\n");
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}
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else if (strcmp(s2, "TMDS"))
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{
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rinfo->mon2_type = MT_DFP;
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dbg("monitor 2 set to TMDS\r\n");
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}
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else if (strcmp(s2, "LVDS"))
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{
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rinfo->mon2_type = MT_LCD;
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dbg("monitor 2 set to LVDS\r\n");
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}
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return 1;
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}
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/*
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* Probe display on both primary and secondary card's connector (if any)
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* by i2c and try to retreive EDID. The algorithm here comes from XFree's * radeon driver
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*/
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void radeon_probe_screens(struct radeonfb_info *rinfo, const char *monitor_layout, int ignore_edid)
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{
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#ifdef CONFIG_FB_RADEON_I2C
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int ddc_crt2_used = 0;
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#endif
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if (radeon_parse_monitor_layout(rinfo, monitor_layout))
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{
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/*
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* If user specified a monitor_layout option, use it instead
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* of auto-detecting. Maybe we should only use this argument
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* on the first radeon card probed or provide a way to specify
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* a layout for each card ?
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*/
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#ifdef CONFIG_FB_RADEON_I2C
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dbg("use monitor layout\r\n");
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if (!ignore_edid)
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{
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if (rinfo->mon1_type != MT_NONE)
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{
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dbg("probe ddc_dvi on MON1\r\n");
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if (!radeon_probe_i2c_connector(rinfo, ddc_dvi, &rinfo->mon1_EDID))
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{
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dbg("probe ddc_crt2 on MON1\r\n");
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radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon1_EDID);
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ddc_crt2_used = 1;
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}
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}
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if (rinfo->mon2_type != MT_NONE)
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{
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dbg("probe ddc_vga on MON2\r\n");
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if (!radeon_probe_i2c_connector(rinfo, ddc_vga, &rinfo->mon2_EDID) && !ddc_crt2_used)
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{
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dbg("probe ddc_crt2 on MON2\r\n");
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radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon2_EDID);
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}
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}
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}
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#endif /* CONFIG_FB_RADEON_I2C */
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if (rinfo->mon1_type == MT_NONE)
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{
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if (rinfo->mon2_type != MT_NONE)
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{
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rinfo->mon1_type = rinfo->mon2_type;
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rinfo->mon1_EDID = rinfo->mon2_EDID;
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}
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else
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{
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rinfo->mon1_type = MT_CRT;
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dbg("No valid monitor, assuming CRT on first port\r\n");
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}
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rinfo->mon2_type = MT_NONE;
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rinfo->mon2_EDID = NULL;
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}
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}
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else
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{
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/*
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* Auto-detecting display type (well... trying to ...)
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*/
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#ifdef CONFIG_FB_RADEON_I2C
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dbg("Auto-detecting\r\n");
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#endif
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#if 0 //#if DEBUG && defined(CONFIG_FB_RADEON_I2C)
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{
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unsigned char *EDIDs[4] = { NULL, NULL, NULL, NULL };
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int mon_types[4] = {MT_NONE, MT_NONE, MT_NONE, MT_NONE};
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int i;
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for(i = 0; i < 4; i++)
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mon_types[i] = radeon_probe_i2c_connector(rinfo, i+1, &EDIDs[i]);
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}
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#endif /* DEBUG */
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/*
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* Old single head cards
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*/
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if (!rinfo->has_CRTC2)
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{
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#ifdef CONFIG_FB_RADEON_I2C
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if (rinfo->mon1_type == MT_NONE)
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{
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dbg("probe ddc_dvi on MON1\r\n");
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rinfo->mon1_type = radeon_probe_i2c_connector(rinfo, ddc_dvi, &rinfo->mon1_EDID);
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}
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if (rinfo->mon1_type == MT_NONE)
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{
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dbg("probe ddc_vga on MON1\r\n");
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rinfo->mon1_type = radeon_probe_i2c_connector(rinfo, ddc_vga, &rinfo->mon1_EDID);
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}
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if (rinfo->mon1_type == MT_NONE)
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{
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dbg("probe ddc_crt2 on MON1\r\n");
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rinfo->mon1_type = radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon1_EDID);
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}
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#endif /* CONFIG_FB_RADEON_I2C */
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if (rinfo->mon1_type == MT_NONE)
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rinfo->mon1_type = MT_CRT;
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goto bail;
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}
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/*
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* Probe primary head (DVI or laptop internal panel)
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*/
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#ifdef CONFIG_FB_RADEON_I2C
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if (rinfo->mon1_type == MT_NONE)
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{
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dbg("probe ddc_dvi on MON1\r\n");
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rinfo->mon1_type = radeon_probe_i2c_connector(rinfo, ddc_dvi, &rinfo->mon1_EDID);
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}
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if (rinfo->mon1_type == MT_NONE)
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{
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dbg("probe ddc_crt2 on MON1\r\n");
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rinfo->mon1_type = radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon1_EDID);
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if (rinfo->mon1_type != MT_NONE)
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ddc_crt2_used = 1;
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}
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#endif /* CONFIG_FB_RADEON_I2C */
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if (rinfo->mon1_type == MT_NONE && rinfo->is_mobility
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&& (INREG(LVDS_GEN_CNTL) & LVDS_ON))
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{
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rinfo->mon1_type = MT_LCD;
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dbg("Non-DDC laptop panel detected\r\n");
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}
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if (rinfo->mon1_type == MT_NONE)
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rinfo->mon1_type = radeon_crt_is_connected(rinfo, rinfo->reversed_DAC);
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/*
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* Probe secondary head (mostly VGA, can be DVI)
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*/
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#ifdef CONFIG_FB_RADEON_I2C
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if (rinfo->mon2_type == MT_NONE)
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{
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dbg("probe ddc_vga on MON2\r\n");
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rinfo->mon2_type = radeon_probe_i2c_connector(rinfo, ddc_vga, &rinfo->mon2_EDID);
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}
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if (rinfo->mon2_type == MT_NONE && !ddc_crt2_used)
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{
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dbg("probe ddc_crt2 on MON2\r\n");
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rinfo->mon2_type = radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon2_EDID);
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}
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#endif /* CONFIG_FB_RADEON_I2C */
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if (rinfo->mon2_type == MT_NONE)
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rinfo->mon2_type = radeon_crt_is_connected(rinfo, !rinfo->reversed_DAC);
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/*
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* If we only detected port 2, we swap them, if none detected,
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* assume CRT (maybe fallback to old BIOS_SCRATCH stuff ? or look
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* at FP registers ?)
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*/
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if (rinfo->mon1_type == MT_NONE)
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{
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if (rinfo->mon2_type != MT_NONE)
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{
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rinfo->mon1_type = rinfo->mon2_type;
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rinfo->mon1_EDID = rinfo->mon2_EDID;
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}
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else
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rinfo->mon1_type = MT_CRT;
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rinfo->mon2_type = MT_NONE;
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rinfo->mon2_EDID = NULL;
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}
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/*
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* Deal with reversed TMDS
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*/
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if (rinfo->reversed_TMDS)
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{
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/* Always keep internal TMDS as primary head */
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if (rinfo->mon1_type == MT_DFP || rinfo->mon2_type == MT_DFP)
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{
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int tmp_type = rinfo->mon1_type;
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unsigned char *tmp_EDID = rinfo->mon1_EDID;
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rinfo->mon1_type = rinfo->mon2_type;
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rinfo->mon1_EDID = rinfo->mon2_EDID;
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rinfo->mon2_type = tmp_type;
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rinfo->mon2_EDID = tmp_EDID;
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if (rinfo->mon1_type == MT_CRT || rinfo->mon2_type == MT_CRT)
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rinfo->reversed_DAC ^= 1;
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}
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}
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}
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if (ignore_edid)
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{
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driver_mem_free(rinfo->mon1_EDID);
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rinfo->mon1_EDID = NULL;
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driver_mem_free(rinfo->mon2_EDID);
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rinfo->mon2_EDID = NULL;
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}
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bail:
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dbg("Monitor 1 type %s found\r\n", radeon_get_mon_name(rinfo->mon1_type));
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if (rinfo->mon1_EDID)
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{
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dbg("EDID probed\r\n");
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}
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if (!rinfo->has_CRTC2)
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return;
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dbg("Monitor 2 type %s\r\n", radeon_get_mon_name(rinfo->mon2_type));
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if (rinfo->mon2_EDID)
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{
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dbg("EDID probed\r\n");
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}
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}
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/*
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* Fill up panel infos from a mode definition, either returned by the EDID
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* or from the default mode when we can't do any better
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*/
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static void radeon_var_to_panel_info(struct radeonfb_info *rinfo, struct fb_var_screeninfo *var)
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{
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rinfo->panel_info.xres = var->xres;
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rinfo->panel_info.yres = var->yres;
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rinfo->panel_info.clock = 100000000 / var->pixclock;
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rinfo->panel_info.hOver_plus = var->right_margin;
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rinfo->panel_info.hSync_width = var->hsync_len;
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rinfo->panel_info.hblank = var->left_margin + (var->right_margin + var->hsync_len);
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rinfo->panel_info.vOver_plus = var->lower_margin;
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rinfo->panel_info.vSync_width = var->vsync_len;
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rinfo->panel_info.vblank = var->upper_margin + (var->lower_margin + var->vsync_len);
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rinfo->panel_info.hAct_high = (var->sync & FB_SYNC_HOR_HIGH_ACT) != 0;
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rinfo->panel_info.vAct_high = (var->sync & FB_SYNC_VERT_HIGH_ACT) != 0;
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rinfo->panel_info.valid = 1;
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/*
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* We use a default of 200ms for the panel power delay,
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* I need to have a real schedule() instead of mdelay's in the panel code.
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* we might be possible to figure out a better power delay either from
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* MacOS OF tree or from the EDID block (proprietary extensions ?)
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*/
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rinfo->panel_info.pwr_delay = 200;
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}
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|
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static void radeon_videomode_to_var(struct fb_var_screeninfo *var,
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const struct fb_videomode *mode)
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{
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var->xres = mode->xres;
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var->yres = mode->yres;
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var->xres_virtual = mode->xres;
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var->yres_virtual = mode->yres;
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var->xoffset = 0;
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var->yoffset = 0;
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var->pixclock = mode->pixclock;
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var->left_margin = mode->left_margin;
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var->right_margin = mode->right_margin;
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var->upper_margin = mode->upper_margin;
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var->lower_margin = mode->lower_margin;
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var->hsync_len = mode->hsync_len;
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var->vsync_len = mode->vsync_len;
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var->sync = mode->sync;
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var->vmode = mode->vmode;
|
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}
|
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|
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/*
|
|
* Build the modedb for head 1 (head 2 will come later), check panel infos
|
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* from either BIOS or EDID, and pick up the default mode
|
|
*/
|
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void radeon_check_modes(struct radeonfb_info *rinfo, struct mode_option *resolution)
|
|
{
|
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struct fb_info *info = rinfo->info;
|
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int has_default_mode = 0;
|
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struct mode_option xres_yres;
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dbg("\r\n");
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|
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/*
|
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* Fill default var first
|
|
*/
|
|
memcpy(&info->var, &radeonfb_default_var, sizeof(struct fb_var_screeninfo));
|
|
|
|
/*
|
|
* 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;
|
|
|
|
dbg("fb_parse_edid\r\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);
|
|
}
|
|
else
|
|
{
|
|
dbg("no data to parse\r\n");
|
|
}
|
|
}
|
|
/*
|
|
* 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;
|
|
|
|
dbg("setup the default mode based on panel info\r\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);
|
|
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;
|
|
|
|
if (rinfo->panel_info.xres == 0 || rinfo->panel_info.yres == 0)
|
|
{
|
|
unsigned long 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 <= 8) || (rinfo->panel_info.yres <= 1))
|
|
{
|
|
rinfo->mon1_type = MT_CRT;
|
|
goto pickup_default;
|
|
}
|
|
modedb = rinfo->mon1_modedb;
|
|
dbsize = rinfo->mon1_dbsize;
|
|
xres_yres.used = 1;
|
|
xres_yres.width = rinfo->panel_info.xres;
|
|
xres_yres.height = rinfo->panel_info.yres;
|
|
xres_yres.bpp = xres_yres.freq = 0;
|
|
if (fb_find_mode(&info->var, info, &xres_yres, modedb, dbsize, NULL,
|
|
(resolution->bpp >= 8) ? (unsigned int)resolution->bpp : 8) == 0)
|
|
{
|
|
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 (resolution->used)
|
|
{
|
|
if (fb_find_mode(&info->var, info, resolution, info->monspecs.modedb,
|
|
info->monspecs.modedb_len, NULL, (resolution->bpp >= 8) ? (unsigned int)resolution->bpp : 8) != 0)
|
|
has_default_mode = 1;
|
|
}
|
|
/*
|
|
* 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
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;
|
|
|
|
dbg("\r\n");
|
|
|
|
/* 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 -1; //-EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
dbg("look for a mode in the database\r\n");
|
|
|
|
/* Now look for a mode in the database */
|
|
while(db)
|
|
{
|
|
for (i = 0; i < dbsize; i++)
|
|
{
|
|
int d;
|
|
|
|
if ((db[i].yres < src->yres) || (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 -1; //-EINVAL;
|
|
return 0;
|
|
}
|