/* * Copyright 2014 SHS SERVICES GmbH * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sub license, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "via_driver.h" #include "via_vt1632.h" static Bool xf86I2CMaskByte(I2CDevPtr d, I2CByte subaddr, I2CByte value, I2CByte mask) { I2CByte tmp; Bool ret; ret = xf86I2CReadByte(d, subaddr, &tmp); if (!ret) return FALSE; tmp &= ~mask; tmp |= (value & mask); return xf86I2CWriteByte(d, subaddr, tmp); } static void via_vt1632_dump_registers(ScrnInfoPtr pScrn, I2CDevPtr pDev) { int i; CARD8 tmp; DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Entered via_vt1632_dump_registers.\n")); DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "VT1632A: dumping registers:\n")); for (i = 0; i <= 0x0f; i++) { xf86I2CReadByte(pDev, i, &tmp); DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "VT1632A: 0x%02x: 0x%02x\n", i, tmp)); } DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_dump_registers.\n")); } void via_vt1632_power(xf86OutputPtr output, Bool powerState) { ViaVT1632Ptr Private = output->driver_private; ScrnInfoPtr pScrn = output->scrn; DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Entered via_vt1632_power.\n")); xf86I2CMaskByte(Private->VT1632I2CDev, 0x08, powerState ? 0x01 : 0x00, 0x01); xf86DrvMsg(pScrn->scrnIndex, X_INFO, "VT1632A Power: %s\n", powerState ? "On" : "Off"); DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_power.\n")); } void via_vt1632_save(xf86OutputPtr output) { ViaVT1632Ptr Private = output->driver_private; ScrnInfoPtr pScrn = output->scrn; DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Entered via_vt1632_save.\n")); DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "VT1632A: Saving the content of registers " "0x08, 0x09, 0x0A, and 0x0C.\n")); xf86I2CReadByte(Private->VT1632I2CDev, 0x08, &Private->Register08); xf86I2CReadByte(Private->VT1632I2CDev, 0x09, &Private->Register09); xf86I2CReadByte(Private->VT1632I2CDev, 0x0A, &Private->Register0A); xf86I2CReadByte(Private->VT1632I2CDev, 0x0C, &Private->Register0C); DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_save.\n")); } void via_vt1632_restore(xf86OutputPtr output) { ViaVT1632Ptr Private = output->driver_private; ScrnInfoPtr pScrn = output->scrn; DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Entered via_vt1632_restore.\n")); DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "VT1632A: Restoring registers 0x08, 0x09, " "0x0A, and 0x0C.\n")); xf86I2CWriteByte(Private->VT1632I2CDev, 0x08, Private->Register08); xf86I2CWriteByte(Private->VT1632I2CDev, 0x09, Private->Register09); xf86I2CWriteByte(Private->VT1632I2CDev, 0x0A, Private->Register0A); xf86I2CWriteByte(Private->VT1632I2CDev, 0x0C, Private->Register0C); DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_restore.\n")); } int via_vt1632_mode_valid(xf86OutputPtr output, DisplayModePtr pMode) { ViaVT1632Ptr Private = output->driver_private; ScrnInfoPtr pScrn = output->scrn; DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Entered via_vt1632_mode_valid.\n")); if (pMode->Clock < Private->DotclockMin) { DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_mode_valid.\n")); return MODE_CLOCK_LOW; } if (pMode->Clock > Private->DotclockMax) { DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_mode_valid.\n")); return MODE_CLOCK_HIGH; } DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_mode_valid.\n")); return MODE_OK; } void via_vt1632_mode_set(xf86OutputPtr output, DisplayModePtr mode, DisplayModePtr adjusted_mode) { ViaVT1632Ptr Private = output->driver_private; ScrnInfoPtr pScrn = output->scrn; DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Entered via_vt1632_mode_set.\n")); xf86DrvMsg(pScrn->scrnIndex, X_INFO, "VT1632A: Enabling DVI.\n"); via_vt1632_dump_registers(pScrn, Private->VT1632I2CDev); /* For Wyse C00X VX855 chipset DVP1 (Digital Video Port 1), use * 12-bit mode with dual edge transfer, along with rising edge * data capture first mode. This is likely true for CX700, VX700, * VX800, and VX900 chipsets as well. */ xf86I2CWriteByte(Private->VT1632I2CDev, 0x08, VIA_VT1632_VEN | VIA_VT1632_HEN | VIA_VT1632_DSEL | VIA_VT1632_EDGE | VIA_VT1632_PDB); /* Route receiver detect bit (Offset 0x09[2]) as the output of * MSEN pin. */ xf86I2CWriteByte(Private->VT1632I2CDev, 0x09, 0x20); /* Turning on deskew feature caused screen display issues. * This was observed with Wyse C00X. */ xf86I2CWriteByte(Private->VT1632I2CDev, 0x0A, 0x00); /* While VIA Technologies VT1632A datasheet insists on setting this * register to 0x89 as the recommended setting, in practice, this * leads to a blank screen on the display with Wyse C00X. According to * Silicon Image SiI 164 datasheet (VT1632A is a pin and mostly * register compatible chip), offset 0x0C is for PLL filter enable, * PLL filter setting, and continuous SYNC enable bits. All of these are * turned off for proper operation. */ xf86I2CWriteByte(Private->VT1632I2CDev, 0x0C, 0x00); via_vt1632_dump_registers(pScrn, Private->VT1632I2CDev); DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_mode_set.\n")); } xf86OutputStatus via_vt1632_detect(xf86OutputPtr output) { ViaVT1632Ptr Private = output->driver_private; xf86OutputStatus status; ScrnInfoPtr pScrn = output->scrn; CARD8 tmp; DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Entered via_vt1632_detect.\n")); xf86I2CReadByte(Private->VT1632I2CDev, 0x09, &tmp); if (tmp & 0x04) { xf86DrvMsg(pScrn->scrnIndex, X_INFO, "VT1632A: DVI device is detected.\n"); status = XF86OutputStatusConnected; } else { xf86DrvMsg(pScrn->scrnIndex, X_INFO, "VT1632A: DVI device was not detected.\n"); status = XF86OutputStatusDisconnected; } DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_detect.\n")); return status; } BOOL via_vt1632_probe(ScrnInfoPtr pScrn, I2CDevPtr pDev) { CARD8 buf = 0; CARD16 VendorID = 0; CARD16 DeviceID = 0; DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Entered via_vt1632_probe.\n")); xf86I2CReadByte(pDev, 0, &buf); VendorID = buf; xf86I2CReadByte(pDev, 1, &buf); VendorID |= buf << 8; DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Vendor ID: 0x%04x\n", VendorID)); xf86I2CReadByte(pDev, 2, &buf); DeviceID = buf; xf86I2CReadByte(pDev, 3, &buf); DeviceID |= buf << 8; DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Device ID: 0x%04x\n", DeviceID)); if ((VendorID != 0x1106) || (DeviceID != 0x3192)) { xf86DrvMsg(pScrn->scrnIndex, X_PROBED, "VT1632A DVI transmitter not detected.\n"); DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_probe.\n")); return FALSE; } xf86DrvMsg(pScrn->scrnIndex, X_PROBED, "VT1632A DVI transmitter detected.\n"); DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_probe.\n")); return TRUE; } ViaVT1632Ptr via_vt1632_init(ScrnInfoPtr pScrn, I2CDevPtr pDev) { VIAPtr pVia = VIAPTR(pScrn); ViaVT1632Ptr Private = NULL; CARD8 buf = 0; DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Entered via_vt1632_init.\n")); Private = xnfcalloc(1, sizeof(ViaVT1632Rec)); if (!Private) { xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Failed to allocate memory for DVI initialization.\n"); DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_init.\n")); return NULL; } Private->VT1632I2CDev = pDev; xf86I2CReadByte(pDev, 0x06, &buf); Private->DotclockMin = buf * 1000; xf86I2CReadByte(pDev, 0x07, &buf); Private->DotclockMax = (buf + 65) * 1000; xf86DrvMsg(pScrn->scrnIndex, X_INFO, "VT1632A Dot Clock Range: " "%d to %d MHz\n", Private->DotclockMin / 1000, Private->DotclockMax / 1000); via_vt1632_dump_registers(pScrn, pDev); DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Exiting via_vt1632_init.\n")); return Private; }