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/*
* Copyright © 2006 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 "xf86_OSproc.h"
#include "xf86Resources.h"
#include "compiler.h"
#include "miscstruct.h"
#include "xf86i2c.h"
#include "../i830_xf86Crtc.h"
#define DPMS_SERVER
#include <X11/extensions/dpms.h>
#include "../i2c_vid.h"
#include "ivch_reg.h"
struct ivch_priv {
I2CDevRec d;
CARD16 save_VR01;
CARD16 save_VR40;
};
static void
ivch_dump_regs(I2CDevPtr d);
/**
* Reads a register on the ivch.
*
* Each of the 256 registers are 16 bits long.
*/
static Bool
ivch_read(struct ivch_priv *priv, int addr, CARD16 *data)
{
if (!xf86I2CReadWord(&priv->d, addr, data)) {
xf86DrvMsg(priv->d.pI2CBus->scrnIndex, X_ERROR,
"Unable to read register 0x%02x from %s:%d.\n",
addr, priv->d.pI2CBus->BusName, priv->d.SlaveAddr);
return FALSE;
}
return TRUE;
}
/** Writes a 16-bit register on the ivch */
static Bool
ivch_write(struct ivch_priv *priv, int addr, CARD16 data)
{
if (!xf86I2CWriteWord(&priv->d, addr, data)) {
xf86DrvMsg(priv->d.pI2CBus->scrnIndex, X_ERROR,
"Unable to write register 0x%02x to %s:%d.\n",
addr, priv->d.pI2CBus->BusName, priv->d.SlaveAddr);
return FALSE;
}
return TRUE;
}
/** Probes the given bus and slave address for an ivch */
static void *
ivch_init(I2CBusPtr b, I2CSlaveAddr addr)
{
struct ivch_priv *priv;
CARD16 temp;
xf86DrvMsg(b->scrnIndex, X_INFO, "detecting ivch\n");
priv = xcalloc(1, sizeof(struct ivch_priv));
if (priv == NULL)
return NULL;
priv->d.DevName = "i82807aa \"ivch\" LVDS/CMOS panel controller";
priv->d.SlaveAddr = addr;
priv->d.pI2CBus = b;
priv->d.StartTimeout = b->StartTimeout;
priv->d.BitTimeout = b->BitTimeout;
priv->d.AcknTimeout = b->AcknTimeout;
priv->d.ByteTimeout = b->ByteTimeout;
priv->d.DriverPrivate.ptr = priv;
if (!xf86I2CReadWord(&priv->d, VR00, &temp))
goto out;
/* Since the identification bits are probably zeroes, which doesn't seem
* very unique, check that the value in the base address field matches
* the address it's responding on.
*/
if ((temp & VR00_BASE_ADDRESS_MASK) != priv->d.SlaveAddr) {
xf86DrvMsg(priv->d.pI2CBus->scrnIndex, X_ERROR,
"ivch detect failed due to address mismatch "
"(%d vs %d)\n",
(temp & VR00_BASE_ADDRESS_MASK), priv->d.SlaveAddr);
}
if (!xf86I2CDevInit(&priv->d)) {
goto out;
}
return priv;
out:
xfree(priv);
return NULL;
}
static xf86OutputStatus
ivch_detect(I2CDevPtr d)
{
return XF86OutputStatusUnknown;
}
static ModeStatus
ivch_mode_valid(I2CDevPtr d, DisplayModePtr mode)
{
if (mode->Clock > 112000)
return MODE_CLOCK_HIGH;
return MODE_OK;
}
/** Sets the power state of the panel connected to the ivch */
static void
ivch_dpms(I2CDevPtr d, int mode)
{
struct ivch_priv *priv = d->DriverPrivate.ptr;
int i;
CARD16 temp;
/* Set the new power state of the panel. */
if (!ivch_read(priv, VR01, &temp))
return;
if (mode == DPMSModeOn)
temp |= VR01_LCD_ENABLE | VR01_DVO_ENABLE;
else
temp &= ~(VR01_LCD_ENABLE | VR01_DVO_ENABLE);
ivch_write(priv, VR01, temp);
/* Wait for the panel to make its state transition */
for (i = 0; i < 1000; i++) {
if (!ivch_read(priv, VR30, &temp))
break;
if (((temp & VR30_PANEL_ON) != 0) == (mode == DPMSModeOn))
break;
}
}
static void
ivch_mode_set(I2CDevPtr d, DisplayModePtr mode)
{
struct ivch_priv *priv = d->DriverPrivate.ptr;
/* Disable panel fitting for now, until we can test. */
ivch_write(priv, VR40, 0);
ivch_dpms(d, DPMSModeOn);
ivch_dump_regs(d);
}
static void
ivch_dump_regs(I2CDevPtr d)
{
struct ivch_priv *priv = d->DriverPrivate.ptr;
CARD16 val;
ivch_read(priv, VR00, &val);
xf86DrvMsg(priv->d.pI2CBus->scrnIndex, X_INFO, "VR00: 0x%04x\n", val);
ivch_read(priv, VR01, &val);
xf86DrvMsg(priv->d.pI2CBus->scrnIndex, X_INFO, "VR01: 0x%04x\n", val);
ivch_read(priv, VR30, &val);
xf86DrvMsg(priv->d.pI2CBus->scrnIndex, X_INFO, "VR30: 0x%04x\n", val);
ivch_read(priv, VR40, &val);
xf86DrvMsg(priv->d.pI2CBus->scrnIndex, X_INFO, "VR40: 0x%04x\n", val);
}
static void
ivch_save(I2CDevPtr d)
{
struct ivch_priv *priv = d->DriverPrivate.ptr;
ivch_read(priv, VR01, &priv->save_VR01);
ivch_read(priv, VR40, &priv->save_VR40);
}
static void
ivch_restore(I2CDevPtr d)
{
struct ivch_priv *priv = d->DriverPrivate.ptr;
ivch_write(priv, VR01, priv->save_VR01);
ivch_write(priv, VR40, priv->save_VR40);
}
I830I2CVidOutputRec ivch_methods = {
.init = ivch_init,
.detect = ivch_detect,
.mode_valid = ivch_mode_valid,
.mode_set = ivch_mode_set,
.dpms = ivch_dpms,
.dump_regs = ivch_dump_regs,
.save = ivch_save,
.restore = ivch_restore,
};
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