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/*
* Copyright © 2007 Intel Corporation
*
* 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, sublicense,
* 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 NONINFRINGEMENT. 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.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "xf86.h"
#include "i830.h"
#include "xf86Modes.h"
#include "i830_display.h"
struct i830_hdmi_priv {
uint32_t output_reg;
uint32_t save_SDVO;
};
static int
i830_hdmi_mode_valid(xf86OutputPtr output, DisplayModePtr mode)
{
if (mode->Clock > 165000)
return MODE_CLOCK_HIGH;
if (mode->Clock < 20000)
return MODE_CLOCK_LOW;
return MODE_OK;
}
static Bool
i830_hdmi_mode_fixup(xf86OutputPtr output, DisplayModePtr mode,
DisplayModePtr adjusted_mode)
{
/* The HDMI output doesn't need the pixel multiplication that SDVO does,
* so no fixup.
*/
return TRUE;
}
static void
i830_hdmi_mode_set(xf86OutputPtr output, DisplayModePtr mode,
DisplayModePtr adjusted_mode)
{
ScrnInfoPtr pScrn = output->scrn;
I830OutputPrivatePtr intel_output = output->driver_private;
struct i830_hdmi_priv *dev_priv = intel_output->dev_priv;
I830Ptr pI830 = I830PTR(pScrn);
xf86CrtcPtr crtc = output->crtc;
I830CrtcPrivatePtr intel_crtc = crtc->driver_private;
uint32_t sdvox;
sdvox = SDVO_ENCODING_HDMI |
SDVO_BORDER_ENABLE |
SDVO_VSYNC_ACTIVE_HIGH |
SDVO_HSYNC_ACTIVE_HIGH;
if (intel_crtc->pipe == 1)
sdvox |= SDVO_PIPE_B_SELECT;
OUTREG(dev_priv->output_reg, sdvox);
POSTING_READ(dev_priv->output_reg);
}
static void
i830_hdmi_dpms(xf86OutputPtr output, int mode)
{
ScrnInfoPtr pScrn = output->scrn;
I830OutputPrivatePtr intel_output = output->driver_private;
struct i830_hdmi_priv *dev_priv = intel_output->dev_priv;
I830Ptr pI830 = I830PTR(pScrn);
uint32_t temp;
if (mode == DPMSModeOff) {
temp = INREG(dev_priv->output_reg);
OUTREG(dev_priv->output_reg, temp & ~SDVO_ENABLE);
} else {
temp = INREG(dev_priv->output_reg);
OUTREG(dev_priv->output_reg, temp | SDVO_ENABLE);
}
}
static void
i830_hdmi_save(xf86OutputPtr output)
{
ScrnInfoPtr pScrn = output->scrn;
I830OutputPrivatePtr intel_output = output->driver_private;
struct i830_hdmi_priv *dev_priv = intel_output->dev_priv;
I830Ptr pI830 = I830PTR(pScrn);
dev_priv->save_SDVO = INREG(dev_priv->output_reg);
}
static void
i830_hdmi_restore(xf86OutputPtr output)
{
ScrnInfoPtr pScrn = output->scrn;
I830OutputPrivatePtr intel_output = output->driver_private;
struct i830_hdmi_priv *dev_priv = intel_output->dev_priv;
I830Ptr pI830 = I830PTR(pScrn);
OUTREG(dev_priv->output_reg, dev_priv->save_SDVO);
}
/**
* Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect HDMI connection.
*
* \return TRUE if HDMI port is connected.
* \return FALSE if HDMI port is disconnected.
*/
static xf86OutputStatus
i830_hdmi_detect(xf86OutputPtr output)
{
ScrnInfoPtr pScrn = output->scrn;
I830OutputPrivatePtr intel_output = output->driver_private;
struct i830_hdmi_priv *dev_priv = intel_output->dev_priv;
I830Ptr pI830 = I830PTR(pScrn);
uint32_t temp, bit;
/* For G4X, PEG_BAND_GAP_DATA 3:0 must first be written 0xd.
* Failure to do so will result in spurious interrupts being
* generated on the port when a cable is not attached.
*/
if (IS_G4X(pI830)) {
temp = INREG(PEG_BAND_GAP_DATA);
OUTREG(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
}
temp = INREG(PORT_HOTPLUG_EN);
OUTREG(PORT_HOTPLUG_EN,
temp |
HDMIB_HOTPLUG_INT_EN |
HDMIC_HOTPLUG_INT_EN |
HDMID_HOTPLUG_INT_EN);
POSTING_READ(PORT_HOTPLUG_EN);
switch (dev_priv->output_reg) {
case SDVOB:
bit = HDMIB_HOTPLUG_INT_STATUS;
break;
case SDVOC:
bit = HDMIC_HOTPLUG_INT_STATUS;
break;
default:
return XF86OutputStatusUnknown;
}
if ((INREG(PORT_HOTPLUG_STAT) & bit) != 0)
return XF86OutputStatusConnected;
else
return XF86OutputStatusDisconnected;
}
static void
i830_hdmi_destroy (xf86OutputPtr output)
{
I830OutputPrivatePtr intel_output = output->driver_private;
if (intel_output != NULL) {
xf86DestroyI2CBusRec(intel_output->pDDCBus, FALSE, FALSE);
xfree(intel_output);
}
}
static const xf86OutputFuncsRec i830_hdmi_output_funcs = {
.dpms = i830_hdmi_dpms,
.save = i830_hdmi_save,
.restore = i830_hdmi_restore,
.mode_valid = i830_hdmi_mode_valid,
.mode_fixup = i830_hdmi_mode_fixup,
.prepare = i830_output_prepare,
.mode_set = i830_hdmi_mode_set,
.commit = i830_output_commit,
.detect = i830_hdmi_detect,
.get_modes = i830_ddc_get_modes,
.destroy = i830_hdmi_destroy
};
void
i830_hdmi_init(ScrnInfoPtr pScrn, int output_reg)
{
xf86OutputPtr output;
I830OutputPrivatePtr intel_output;
struct i830_hdmi_priv *dev_priv;
output = xf86OutputCreate(pScrn, &i830_hdmi_output_funcs,
(output_reg == SDVOB) ? "HDMI-1" : "HDMI-2");
if (!output)
return;
intel_output = xnfcalloc(sizeof (I830OutputPrivateRec) +
sizeof (struct i830_hdmi_priv), 1);
if (intel_output == NULL) {
xf86OutputDestroy(output);
return;
}
output->driver_private = intel_output;
output->interlaceAllowed = FALSE;
output->doubleScanAllowed = FALSE;
dev_priv = (struct i830_hdmi_priv *)(intel_output + 1);
dev_priv->output_reg = output_reg;
intel_output->dev_priv = dev_priv;
intel_output->type = I830_OUTPUT_HDMI;
intel_output->pipe_mask = ((1 << 0) | (1 << 1));
intel_output->clone_mask = (1 << I830_OUTPUT_HDMI);
/* Set up the DDC bus. */
if (output_reg == SDVOB)
I830I2CInit(pScrn, &intel_output->pDDCBus, GPIOE, "HDMIDDC_B");
else
I830I2CInit(pScrn, &intel_output->pDDCBus, GPIOD, "HDMIDDC_C");
xf86DrvMsg(pScrn->scrnIndex, X_INFO,
"HDMI output %d detected\n",
(output_reg == SDVOB) ? 1 : 2);
}
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