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Diffstat (limited to 'src/mga_2064_output.c')
| -rw-r--r-- | src/mga_2064_output.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/mga_2064_output.c b/src/mga_2064_output.c new file mode 100644 index 0000000..d4c655c --- /dev/null +++ b/src/mga_2064_output.c @@ -0,0 +1,196 @@ +/* + * Copyright 2007 Tilman Sauerbeck + * + * 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 + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * them 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 MERCHANTIBILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS 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. + * + * Authors: + * Tilman Sauerbeck <tilman@code-monkey.de> + * + * Sources: + * xf86-video-intel + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include "xf86.h" +#include "xf86i2c.h" +#include "xf86Crtc.h" + +#include "mga_reg.h" +#include "mga.h" + +#define MGAOUTPUTDATAPTR(p) ((MgaOutputDataPtr) ((p)->driver_private)) + +typedef struct { + I2CBusPtr ddc_bus; +} MgaOutputDataRec, *MgaOutputDataPtr; + +static void output_dpms(xf86OutputPtr output, int mode); +static int output_mode_valid(xf86OutputPtr output, DisplayModePtr mode); +static int output_mode_fixup(xf86OutputPtr output, DisplayModePtr mode, + DisplayModePtr adjusted_mode); +static void output_prepare(xf86OutputPtr output); +static void output_mode_set(xf86OutputPtr output, DisplayModePtr mode, + DisplayModePtr adjusted_mode); +static void output_commit(xf86OutputPtr output); +static xf86OutputStatus output_detect(xf86OutputPtr output); +static DisplayModePtr output_get_modes(xf86OutputPtr output); +static void output_destroy(xf86OutputPtr output); + +static const xf86OutputFuncsRec output_funcs = { + .dpms = output_dpms, + .mode_valid = output_mode_valid, + .mode_fixup = output_mode_fixup, + .prepare = output_prepare, + .mode_set = output_mode_set, + .commit = output_commit, + .detect = output_detect, + .get_modes = output_get_modes, + .destroy = output_destroy +}; + +static void +output_dpms(xf86OutputPtr output, int mode) +{ + /* FIXME + * + * Prefer an implementation that doesn't depend on VGA specifics. + */ + + MGAPtr pMga = MGAPTR(output->scrn); + CARD8 seq1, crtcext1; + + OUTREG8(MGAREG_SEQ_INDEX, 0x01); /* Select SEQ1 */ + OUTREG8(MGAREG_CRTCEXT_INDEX, 0x01); /* Select CRTCEXT1 */ + + seq1 = INREG8(MGAREG_SEQ_DATA); + seq1 &= ~MGAREG_SEQ1_SCREEN_OFF; + + crtcext1 = INREG8(MGAREG_CRTCEXT_DATA); + crtcext1 &= ~MGAREG_CRTCEXT1_HSYNC_OFF; + crtcext1 &= ~MGAREG_CRTCEXT1_VSYNC_OFF; + + switch (mode) { + case DPMSModeOn: + /* nothing to do */ + break; + case DPMSModeStandby: + seq1 |= MGAREG_SEQ1_SCREEN_OFF; + crtcext1 = MGAREG_CRTCEXT1_HSYNC_OFF; + break; + case DPMSModeSuspend: + seq1 |= MGAREG_SEQ1_SCREEN_OFF; + crtcext1 |= MGAREG_CRTCEXT1_VSYNC_OFF; + break; + case DPMSModeOff: + seq1 |= MGAREG_SEQ1_SCREEN_OFF; + crtcext1 |= MGAREG_CRTCEXT1_HSYNC_OFF; + crtcext1 |= MGAREG_CRTCEXT1_VSYNC_OFF; + break; + } + + OUTREG8(MGAREG_SEQ_DATA, seq1); + OUTREG8(MGAREG_CRTCEXT_DATA, crtcext1); +} + +static int +output_mode_valid(xf86OutputPtr output, DisplayModePtr mode) +{ + return MODE_OK; +} + +static int +output_mode_fixup(xf86OutputPtr output, DisplayModePtr mode, + DisplayModePtr pAdjustedMode) +{ + return TRUE; +} + +static void +output_prepare(xf86OutputPtr output) +{ +} + +static void +output_mode_set(xf86OutputPtr output, DisplayModePtr mode, + DisplayModePtr adjusted_mode) +{ +} + +static void +output_commit(xf86OutputPtr output) +{ +} + +static xf86OutputStatus +output_detect(xf86OutputPtr output) +{ + MgaOutputDataPtr data = MGAOUTPUTDATAPTR(output); + + /* 0xa0 is DDC EEPROM address */ + if (xf86I2CProbeAddress(data->ddc_bus, 0xa0)) + return XF86OutputStatusConnected; + else + return XF86OutputStatusUnknown; +} + +static DisplayModePtr +output_get_modes(xf86OutputPtr output) +{ + MgaOutputDataPtr data = MGAOUTPUTDATAPTR(output); + xf86MonPtr mon; + + mon = xf86OutputGetEDID(output, data->ddc_bus); + xf86OutputSetEDID(output, mon); + + return xf86OutputGetEDIDModes(output); +} + +static void +output_destroy(xf86OutputPtr output) +{ + if (output->driver_private) + xfree(output->driver_private); +} + +xf86OutputPtr +MgaOutput2064New(ScrnInfoPtr scrn) +{ + MGAPtr pMga = MGAPTR(scrn); + xf86OutputPtr output; + MgaOutputDataPtr data; + + data = xnfcalloc(sizeof(MgaOutputDataRec), 1); + if (!data) + return NULL; + + output = xf86OutputCreate(scrn, &output_funcs, "VGA 1"); + if (!output) { + xfree(data); + return NULL; + } + + output->driver_private = data; + + data->ddc_bus = pMga->DDC_Bus1; + + return output; +} |