275 lines
7.0 KiB
C
275 lines
7.0 KiB
C
/*
|
|
* Copyright © 2006-2007 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>
|
|
*/
|
|
|
|
#include <linux/i2c.h>
|
|
#include "drmP.h"
|
|
#include "drm.h"
|
|
#include "drm_crtc.h"
|
|
#include "intel_drv.h"
|
|
#include "i915_drm.h"
|
|
#include "i915_drv.h"
|
|
|
|
static void intel_crt_dpms(struct drm_output *output, int mode)
|
|
{
|
|
struct drm_device *dev = output->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 temp;
|
|
|
|
temp = I915_READ(ADPA);
|
|
temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
|
|
temp &= ~ADPA_DAC_ENABLE;
|
|
|
|
switch(mode) {
|
|
case DPMSModeOn:
|
|
temp |= ADPA_DAC_ENABLE;
|
|
break;
|
|
case DPMSModeStandby:
|
|
temp |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE;
|
|
break;
|
|
case DPMSModeSuspend:
|
|
temp |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE;
|
|
break;
|
|
case DPMSModeOff:
|
|
temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
|
|
break;
|
|
}
|
|
|
|
I915_WRITE(ADPA, temp);
|
|
}
|
|
|
|
static void intel_crt_save(struct drm_output *output)
|
|
{
|
|
|
|
}
|
|
|
|
static void intel_crt_restore(struct drm_output *output)
|
|
{
|
|
|
|
}
|
|
|
|
static int intel_crt_mode_valid(struct drm_output *output,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
if (mode->flags & V_DBLSCAN)
|
|
return MODE_NO_DBLESCAN;
|
|
|
|
if (mode->clock > 400000 || mode->clock < 25000)
|
|
return MODE_CLOCK_RANGE;
|
|
|
|
return MODE_OK;
|
|
}
|
|
|
|
static bool intel_crt_mode_fixup(struct drm_output *output,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static void intel_crt_mode_set(struct drm_output *output,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
struct drm_device *dev = output->dev;
|
|
struct drm_crtc *crtc = output->crtc;
|
|
struct intel_crtc *intel_crtc = crtc->driver_private;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int dpll_md_reg;
|
|
u32 adpa, dpll_md;
|
|
|
|
if (intel_crtc->pipe == 0)
|
|
dpll_md_reg = DPLL_A_MD;
|
|
else
|
|
dpll_md_reg = DPLL_B_MD;
|
|
|
|
/*
|
|
* Disable separate mode multiplier used when cloning SDVO to CRT
|
|
* XXX this needs to be adjusted when we really are cloning
|
|
*/
|
|
if (IS_I965G(dev)) {
|
|
dpll_md = I915_READ(dpll_md_reg);
|
|
I915_WRITE(dpll_md_reg,
|
|
dpll_md & ~DPLL_MD_UDI_MULTIPLIER_MASK);
|
|
}
|
|
|
|
adpa = 0;
|
|
if (adjusted_mode->flags & V_PHSYNC)
|
|
adpa |= ADPA_HSYNC_ACTIVE_HIGH;
|
|
if (adjusted_mode->flags & V_PVSYNC)
|
|
adpa |= ADPA_VSYNC_ACTIVE_HIGH;
|
|
|
|
if (intel_crtc->pipe == 0)
|
|
adpa |= ADPA_PIPE_A_SELECT;
|
|
else
|
|
adpa |= ADPA_PIPE_B_SELECT;
|
|
|
|
I915_WRITE(ADPA, adpa);
|
|
}
|
|
|
|
/**
|
|
* Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
|
|
*
|
|
* Only for I945G/GM.
|
|
*
|
|
* \return TRUE if CRT is connected.
|
|
* \return FALSE if CRT is disconnected.
|
|
*/
|
|
static bool intel_crt_detect_hotplug(struct drm_output *output)
|
|
{
|
|
struct drm_device *dev = output->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 temp;
|
|
#if 1
|
|
unsigned long timeout = jiffies + msecs_to_jiffies(1000);
|
|
|
|
temp = I915_READ(PORT_HOTPLUG_EN);
|
|
|
|
I915_WRITE(PORT_HOTPLUG_EN,
|
|
temp | CRT_HOTPLUG_FORCE_DETECT | (1 << 5));
|
|
|
|
do {
|
|
if (!(I915_READ(PORT_HOTPLUG_EN) & CRT_HOTPLUG_FORCE_DETECT))
|
|
break;
|
|
msleep(1);
|
|
} while (time_after(timeout, jiffies));
|
|
|
|
if ((I915_READ(PORT_HOTPLUG_STAT) & CRT_HOTPLUG_MONITOR_MASK) ==
|
|
CRT_HOTPLUG_MONITOR_COLOR)
|
|
return true;
|
|
|
|
return false;
|
|
#else
|
|
temp = I915_READ(PORT_HOTPLUG_STAT);
|
|
DRM_DEBUG("HST 0x%08x\n", temp);
|
|
|
|
if (temp & (1 << 8) && temp & (1 << 9))
|
|
return true;
|
|
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
static bool intel_crt_detect_ddc(struct drm_output *output)
|
|
{
|
|
struct intel_output *intel_output = output->driver_private;
|
|
|
|
/* CRT should always be at 0, but check anyway */
|
|
if (intel_output->type != INTEL_OUTPUT_ANALOG)
|
|
return false;
|
|
|
|
return intel_ddc_probe(output);
|
|
}
|
|
|
|
static enum drm_output_status intel_crt_detect(struct drm_output *output)
|
|
{
|
|
struct drm_device *dev = output->dev;
|
|
|
|
if (IS_I945G(dev) || IS_I945GM(dev) || IS_I965G(dev)) {
|
|
if (intel_crt_detect_hotplug(output))
|
|
return output_status_connected;
|
|
else
|
|
return output_status_disconnected;
|
|
}
|
|
|
|
if (intel_crt_detect_ddc(output))
|
|
return output_status_connected;
|
|
|
|
/* TODO use load detect */
|
|
return output_status_unknown;
|
|
}
|
|
|
|
static void intel_crt_destroy(struct drm_output *output)
|
|
{
|
|
struct intel_output *intel_output = output->driver_private;
|
|
|
|
intel_i2c_destroy(intel_output->ddc_bus);
|
|
kfree(output->driver_private);
|
|
}
|
|
|
|
static int intel_crt_get_modes(struct drm_output *output)
|
|
{
|
|
return intel_ddc_get_modes(output);
|
|
}
|
|
|
|
static bool intel_crt_set_property(struct drm_output *output,
|
|
struct drm_property *property,
|
|
uint64_t value)
|
|
{
|
|
struct drm_device *dev = output->dev;
|
|
|
|
if (property == dev->mode_config.dpms_property)
|
|
intel_crt_dpms(output, (uint32_t)(value & 0xf));
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Routines for controlling stuff on the analog port
|
|
*/
|
|
static const struct drm_output_funcs intel_crt_output_funcs = {
|
|
.dpms = intel_crt_dpms,
|
|
.save = intel_crt_save,
|
|
.restore = intel_crt_restore,
|
|
.mode_valid = intel_crt_mode_valid,
|
|
.mode_fixup = intel_crt_mode_fixup,
|
|
.prepare = intel_output_prepare,
|
|
.mode_set = intel_crt_mode_set,
|
|
.commit = intel_output_commit,
|
|
.detect = intel_crt_detect,
|
|
.get_modes = intel_crt_get_modes,
|
|
.cleanup = intel_crt_destroy,
|
|
.set_property = intel_crt_set_property,
|
|
};
|
|
|
|
void intel_crt_init(struct drm_device *dev)
|
|
{
|
|
struct drm_output *output;
|
|
struct intel_output *intel_output;
|
|
|
|
output = drm_output_create(dev, &intel_crt_output_funcs,
|
|
DRM_MODE_OUTPUT_DAC);
|
|
|
|
intel_output = kmalloc(sizeof(struct intel_output), GFP_KERNEL);
|
|
if (!intel_output) {
|
|
drm_output_destroy(output);
|
|
return;
|
|
}
|
|
/* Set up the DDC bus. */
|
|
intel_output->ddc_bus = intel_i2c_create(dev, GPIOA, "CRTDDC_A");
|
|
if (!intel_output->ddc_bus) {
|
|
dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration "
|
|
"failed.\n");
|
|
return;
|
|
}
|
|
|
|
intel_output->type = INTEL_OUTPUT_ANALOG;
|
|
output->driver_private = intel_output;
|
|
output->interlace_allowed = 0;
|
|
output->doublescan_allowed = 0;
|
|
|
|
drm_output_attach_property(output, dev->mode_config.connector_type_property, ConnectorVGA);
|
|
}
|