- 根目录:
- drivers
- gpu
- drm
- gma500
- cdv_intel_lvds.c
/*
* Copyright © 2006-2011 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
* Authors:
* Eric Anholt <eric@anholt.net>
* Dave Airlie <airlied@linux.ie>
* Jesse Barnes <jesse.barnes@intel.com>
*/
#include <linux/i2c.h>
#include <linux/dmi.h>
#include <drm/drmP.h>
#include "intel_bios.h"
#include "psb_drv.h"
#include "psb_intel_drv.h"
#include "psb_intel_reg.h"
#include "power.h"
#include <linux/pm_runtime.h>
#include "cdv_device.h"
/**
* LVDS I2C backlight control macros
*/
#define BRIGHTNESS_MAX_LEVEL 100
#define BRIGHTNESS_MASK 0xFF
#define BLC_I2C_TYPE 0x01
#define BLC_PWM_TYPT 0x02
#define BLC_POLARITY_NORMAL 0
#define BLC_POLARITY_INVERSE 1
#define PSB_BLC_MAX_PWM_REG_FREQ (0xFFFE)
#define PSB_BLC_MIN_PWM_REG_FREQ (0x2)
#define PSB_BLC_PWM_PRECISION_FACTOR (10)
#define PSB_BACKLIGHT_PWM_CTL_SHIFT (16)
#define PSB_BACKLIGHT_PWM_POLARITY_BIT_CLEAR (0xFFFE)
struct cdv_intel_lvds_priv {
/**
* Saved LVDO output states
*/
uint32_t savePP_ON;
uint32_t savePP_OFF;
uint32_t saveLVDS;
uint32_t savePP_CONTROL;
uint32_t savePP_CYCLE;
uint32_t savePFIT_CONTROL;
uint32_t savePFIT_PGM_RATIOS;
uint32_t saveBLC_PWM_CTL;
};
/*
* Returns the maximum level of the backlight duty cycle field.
*/
static u32 cdv_intel_lvds_get_max_backlight(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = dev->dev_private;
u32 retval;
if (gma_power_begin(dev, false)) {
retval = ((REG_READ(BLC_PWM_CTL) &
BACKLIGHT_MODULATION_FREQ_MASK) >>
BACKLIGHT_MODULATION_FREQ_SHIFT) * 2;
gma_power_end(dev);
} else
retval = ((dev_priv->regs.saveBLC_PWM_CTL &
BACKLIGHT_MODULATION_FREQ_MASK) >>
BACKLIGHT_MODULATION_FREQ_SHIFT) * 2;
return retval;
}
#if 0
/*
* Set LVDS backlight level by I2C command
*/
static int cdv_lvds_i2c_set_brightness(struct drm_device *dev,
unsigned int level)
{
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_intel_i2c_chan *lvds_i2c_bus = dev_priv->lvds_i2c_bus;
u8 out_buf[2];
unsigned int blc_i2c_brightness;
struct i2c_msg msgs[] = {
{
.addr = lvds_i2c_bus->slave_addr,
.flags = 0,
.len = 2,
.buf = out_buf,
}
};
blc_i2c_brightness = BRIGHTNESS_MASK & ((unsigned int)level *
BRIGHTNESS_MASK /
BRIGHTNESS_MAX_LEVEL);
if (dev_priv->lvds_bl->pol == BLC_POLARITY_INVERSE)
blc_i2c_brightness = BRIGHTNESS_MASK - blc_i2c_brightness;
out_buf[0] = dev_priv->lvds_bl->brightnesscmd;
out_buf[1] = (u8)blc_i2c_brightness;
if (i2c_transfer(&lvds_i2c_bus->adapter, msgs, 1) == 1)
return 0;
DRM_ERROR("I2C transfer error\n");
return -1;
}
static int cdv_lvds_pwm_set_brightness(struct drm_device *dev, int level)
{
struct drm_psb_private *dev_priv = dev->dev_private;
u32 max_pwm_blc;
u32 blc_pwm_duty_cycle;
max_pwm_blc = cdv_intel_lvds_get_max_backlight(dev);
/*BLC_PWM_CTL Should be initiated while backlight device init*/
BUG_ON((max_pwm_blc & PSB_BLC_MAX_PWM_REG_FREQ) == 0);
blc_pwm_duty_cycle = level * max_pwm_blc / BRIGHTNESS_MAX_LEVEL;
if (dev_priv->lvds_bl->pol == BLC_POLARITY_INVERSE)
blc_pwm_duty_cycle = max_pwm_blc - blc_pwm_duty_cycle;
blc_pwm_duty_cycle &= PSB_BACKLIGHT_PWM_POLARITY_BIT_CLEAR;
REG_WRITE(BLC_PWM_CTL,
(max_pwm_blc << PSB_BACKLIGHT_PWM_CTL_SHIFT) |
(blc_pwm_duty_cycle));
return 0;
}
/*
* Set LVDS backlight level either by I2C or PWM
*/
void cdv_intel_lvds_set_brightness(struct drm_device *dev, int level)
{
struct drm_psb_private *dev_priv = dev->dev_private;
if (!dev_priv->lvds_bl) {
DRM_ERROR("NO LVDS Backlight Info\n");
return;
}
if (dev_priv->lvds_bl->type == BLC_I2C_TYPE)
cdv_lvds_i2c_set_brightness(dev, level);
else
cdv_lvds_pwm_set_brightness(dev, level);
}
#endif
/**
* Sets the backlight level.
*
* level backlight level, from 0 to cdv_intel_lvds_get_max_backlight().
*/
static void cdv_intel_lvds_set_backlight(struct drm_device *dev, int level)
{
struct drm_psb_private *dev_priv = dev->dev_private;
u32 blc_pwm_ctl;
if (gma_power_begin(dev, false)) {
blc_pwm_ctl =
REG_READ(BLC_PWM_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK;
REG_WRITE(BLC_PWM_CTL,
(blc_pwm_ctl |
(level << BACKLIGHT_DUTY_CYCLE_SHIFT)));
gma_power_end(dev);
} else {
blc_pwm_ctl = dev_priv->regs.saveBLC_PWM_CTL &
~BACKLIGHT_DUTY_CYCLE_MASK;
dev_priv->regs.saveBLC_PWM_CTL = (blc_pwm_ctl |
(level << BACKLIGHT_DUTY_CYCLE_SHIFT));
}
}
/**
* Sets the power state for the panel.
*/
static void cdv_intel_lvds_set_power(struct drm_device *dev,
struct drm_encoder *encoder, bool on)
{
struct drm_psb_private *dev_priv = dev->dev_private;
u32 pp_status;
if (!gma_power_begin(dev, true))
return;
if (on) {
REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) |
POWER_TARGET_ON);
do {
pp_status = REG_READ(PP_STATUS);
} while ((pp_status & PP_ON) == 0);
cdv_intel_lvds_set_backlight(dev,
dev_priv->mode_dev.backlight_duty_cycle);
} else {
cdv_intel_lvds_set_backlight(dev, 0);
REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) &
~POWER_TARGET_ON);
do {
pp_status = REG_READ(PP_STATUS);
} while (pp_status & PP_ON);
}
gma_power_end(dev);
}
static void cdv_intel_lvds_encoder_dpms(struct drm_encoder *encoder, int mode)
{
struct drm_device *dev = encoder->dev;
if (mode == DRM_MODE_DPMS_ON)
cdv_intel_lvds_set_power(dev, encoder, true);
else
cdv_intel_lvds_set_power(dev, encoder, false);
/* XXX: We never power down the LVDS pairs. */
}
static void cdv_intel_lvds_save(struct drm_connector *connector)
{
}
static void cdv_intel_lvds_restore(struct drm_connector *connector)
{
}
static int cdv_intel_lvds_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct drm_device *dev = connector->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct drm_display_mode *fixed_mode =
dev_priv->mode_dev.panel_fixed_mode;
/* just in case */
if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
return MODE_NO_DBLESCAN;
/* just in case */
if (mode->flags & DRM_MODE_FLAG_INTERLACE)
return MODE_NO_INTERLACE;
if (fixed_mode) {
if (mode->hdisplay > fixed_mode->hdisplay)
return MODE_PANEL;
if (mode->vdisplay > fixed_mode->vdisplay)
return MODE_PANEL;
}
return MODE_OK;
}
static bool cdv_intel_lvds_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_device *dev = encoder->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
struct drm_encoder *tmp_encoder;
struct drm_display_mode *panel_fixed_mode = mode_dev->panel_fixed_mode;
/* Should never happen!! */
list_for_each_entry(tmp_encoder, &dev->mode_config.encoder_list,
head) {
if (tmp_encoder != encoder
&& tmp_encoder->crtc == encoder->crtc) {
printk(KERN_ERR "Can't enable LVDS and another "
"encoder on the same pipe\n");
return false;
}
}
/*
* If we have timings from the BIOS for the panel, put them in
* to the adjusted mode. The CRTC will be set up for this mode,
* with the panel scaling set up to source from the H/VDisplay
* of the original mode.
*/
if (panel_fixed_mode != NULL) {
adjusted_mode->hdisplay = panel_fixed_mode->hdisplay;
adjusted_mode->hsync_start = panel_fixed_mode->hsync_start;
adjusted_mode->hsync_end = panel_fixed_mode->hsync_end;
adjusted_mode->htotal = panel_fixed_mode->htotal;
adjusted_mode->vdisplay = panel_fixed_mode->vdisplay;
adjusted_mode->vsync_start = panel_fixed_mode->vsync_start;
adjusted_mode->vsync_end = panel_fixed_mode->vsync_end;
adjusted_mode->vtotal = panel_fixed_mode->vtotal;
adjusted_mode->clock = panel_fixed_mode->clock;
drm_mode_set_crtcinfo(adjusted_mode,
CRTC_INTERLACE_HALVE_V);
}
/*
* XXX: It would be nice to support lower refresh rates on the
* panels to reduce power consumption, and perhaps match the
* user's requested refresh rate.
*/
return true;
}
static void cdv_intel_lvds_prepare(struct drm_encoder *encoder)
{
struct drm_device *dev = encoder->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
if (!gma_power_begin(dev, true))
return;
mode_dev->saveBLC_PWM_CTL = REG_READ(BLC_PWM_CTL);
mode_dev->backlight_duty_cycle = (mode_dev->saveBLC_PWM_CTL &
BACKLIGHT_DUTY_CYCLE_MASK);
cdv_intel_lvds_set_power(dev, encoder, false);
gma_power_end(dev);
}
static void cdv_intel_lvds_commit(struct drm_encoder *encoder)
{
struct drm_device *dev = encoder->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
if (mode_dev->backlight_duty_cycle == 0)
mode_dev->backlight_duty_cycle =
cdv_intel_lvds_get_max_backlight(dev);
cdv_intel_lvds_set_power(dev, encoder, true);
}
static void cdv_intel_lvds_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_device *dev = encoder->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct gma_crtc *gma_crtc = to_gma_crtc(encoder->crtc);
u32 pfit_control;
/*
* The LVDS pin pair will already have been turned on in the
* cdv_intel_crtc_mode_set since it has a large impact on the DPLL
* settings.
*/
/*
* Enable automatic panel scaling so that non-native modes fill the
* screen. Should be enabled before the pipe is enabled, according to
* register description and PRM.
*/
if (mode->hdisplay != adjusted_mode->hdisplay ||
mode->vdisplay != adjusted_mode->vdisplay)
pfit_control = (PFIT_ENABLE | VERT_AUTO_SCALE |
HORIZ_AUTO_SCALE | VERT_INTERP_BILINEAR |
HORIZ_INTERP_BILINEAR);
else
pfit_control = 0;
pfit_control |= gma_crtc->pipe << PFIT_PIPE_SHIFT;
if (dev_priv->lvds_dither)
pfit_control |= PANEL_8TO6_DITHER_ENABLE;
REG_WRITE(PFIT_CONTROL, pfit_control);
}
/**
* Detect the LVDS connection.
*
* This always returns CONNECTOR_STATUS_CONNECTED.
* This connector should only have
* been set up if the LVDS was actually connected anyway.
*/
static enum drm_connector_status cdv_intel_lvds_detect(
struct drm_connector *connector, bool force)
{
return connector_status_connected;
}
/**
* Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
*/
static int cdv_intel_lvds_get_modes(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
int ret;
ret = psb_intel_ddc_get_modes(connector, &gma_encoder->i2c_bus->adapter);
if (ret)
return ret;
/* Didn't get an EDID, so
* Set wide sync ranges so we get all modes
* handed to valid_mode for checking
*/
connector->display_info.min_vfreq = 0;
connector->display_info.max_vfreq = 200;
connector->display_info.min_hfreq = 0;
connector->display_info.max_hfreq = 200;
if (mode_dev->panel_fixed_mode != NULL) {
struct drm_display_mode *mode =
drm_mode_duplicate(dev, mode_dev->panel_fixed_mode);
drm_mode_probed_add(connector, mode);
return 1;
}
return 0;
}
/**
* cdv_intel_lvds_destroy - unregister and free LVDS structures
* @connector: connector to free
*
* Unregister the DDC bus for this connector then free the driver private
* structure.
*/
static void cdv_intel_lvds_destroy(struct drm_connector *connector)
{
struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
if (gma_encoder->i2c_bus)
psb_intel_i2c_destroy(gma_encoder->i2c_bus);
drm_sysfs_connector_remove(connector);
drm_connector_cleanup(connector);
kfree(connector);
}
static int cdv_intel_lvds_set_property(struct drm_connector *connector,
struct drm_property *property,
uint64_t value)
{
struct drm_encoder *encoder = connector->encoder;
if (!strcmp(property->name, "scaling mode") && encoder) {
struct gma_crtc *crtc = to_gma_crtc(encoder->crtc);
uint64_t curValue;
if (!crtc)
return -1;
switch (value) {
case DRM_MODE_SCALE_FULLSCREEN:
break;
case DRM_MODE_SCALE_NO_SCALE:
break;
case DRM_MODE_SCALE_ASPECT:
break;
default:
return -1;
}
if (drm_object_property_get_value(&connector->base,
property,
&curValue))
return -1;
if (curValue == value)
return 0;
if (drm_object_property_set_value(&connector->base,
property,
value))
return -1;
if (crtc->saved_mode.hdisplay != 0 &&
crtc->saved_mode.vdisplay != 0) {
if (!drm_crtc_helper_set_mode(encoder->crtc,
&crtc->saved_mode,
encoder->crtc->x,
encoder->crtc->y,
encoder->crtc->fb))
return -1;
}
} else if (!strcmp(property->name, "backlight") && encoder) {
if (drm_object_property_set_value(&connector->base,
property,
value))
return -1;
else
gma_backlight_set(encoder->dev, value);
} else if (!strcmp(property->name, "DPMS") && encoder) {
struct drm_encoder_helper_funcs *helpers =
encoder->helper_private;
helpers->dpms(encoder, value);
}
return 0;
}
static const struct drm_encoder_helper_funcs
cdv_intel_lvds_helper_funcs = {
.dpms = cdv_intel_lvds_encoder_dpms,
.mode_fixup = cdv_intel_lvds_mode_fixup,
.prepare = cdv_intel_lvds_prepare,
.mode_set = cdv_intel_lvds_mode_set,
.commit = cdv_intel_lvds_commit,
};
static const struct drm_connector_helper_funcs
cdv_intel_lvds_connector_helper_funcs = {
.get_modes = cdv_intel_lvds_get_modes,
.mode_valid = cdv_intel_lvds_mode_valid,
.best_encoder = gma_best_encoder,
};
static const struct drm_connector_funcs cdv_intel_lvds_connector_funcs = {
.dpms = drm_helper_connector_dpms,
.save = cdv_intel_lvds_save,
.restore = cdv_intel_lvds_restore,
.detect = cdv_intel_lvds_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.set_property = cdv_intel_lvds_set_property,
.destroy = cdv_intel_lvds_destroy,
};
static void cdv_intel_lvds_enc_destroy(struct drm_encoder *encoder)
{
drm_encoder_cleanup(encoder);
}
static const struct drm_encoder_funcs cdv_intel_lvds_enc_funcs = {
.destroy = cdv_intel_lvds_enc_destroy,
};
/*
* Enumerate the child dev array parsed from VBT to check whether
* the LVDS is present.
* If it is present, return 1.
* If it is not present, return false.
* If no child dev is parsed from VBT, it assumes that the LVDS is present.
*/
static bool lvds_is_present_in_vbt(struct drm_device *dev,
u8 *i2c_pin)
{
struct drm_psb_private *dev_priv = dev->dev_private;
int i;
if (!dev_priv->child_dev_num)
return true;
for (i = 0; i < dev_priv->child_dev_num; i++) {
struct child_device_config *child = dev_priv->child_dev + i;
/* If the device type is not LFP, continue.
* We have to check both the new identifiers as well as the
* old for compatibility with some BIOSes.
*/
if (child->device_type != DEVICE_TYPE_INT_LFP &&
child->device_type != DEVICE_TYPE_LFP)
continue;
if (child->i2c_pin)
*i2c_pin = child->i2c_pin;
/* However, we cannot trust the BIOS writers to populate
* the VBT correctly. Since LVDS requires additional
* information from AIM blocks, a non-zero addin offset is
* a good indicator that the LVDS is actually present.
*/
if (child->addin_offset)
return true;
/* But even then some BIOS writers perform some black magic
* and instantiate the device without reference to any
* additional data. Trust that if the VBT was written into
* the OpRegion then they have validated the LVDS's existence.
*/
if (dev_priv->opregion.vbt)
return true;
}
return false;
}
/**
* cdv_intel_lvds_init - setup LVDS connectors on this device
* @dev: drm device
*
* Create the connector, register the LVDS DDC bus, and try to figure out what
* modes we can display on the LVDS panel (if present).
*/
void cdv_intel_lvds_init(struct drm_device *dev,
struct psb_intel_mode_device *mode_dev)
{
struct gma_encoder *gma_encoder;
struct gma_connector *gma_connector;
struct cdv_intel_lvds_priv *lvds_priv;
struct drm_connector *connector;
struct drm_encoder *encoder;
struct drm_display_mode *scan;
struct drm_crtc *crtc;
struct drm_psb_private *dev_priv = dev->dev_private;
u32 lvds;
int pipe;
u8 pin;
pin = GMBUS_PORT_PANEL;
if (!lvds_is_present_in_vbt(dev, &pin)) {
DRM_DEBUG_KMS("LVDS is not present in VBT\n");
return;
}
gma_encoder = kzalloc(sizeof(struct gma_encoder),
GFP_KERNEL);
if (!gma_encoder)
return;
gma_connector = kzalloc(sizeof(struct gma_connector),
GFP_KERNEL);
if (!gma_connector)
goto failed_connector;
lvds_priv = kzalloc(sizeof(struct cdv_intel_lvds_priv), GFP_KERNEL);
if (!lvds_priv)
goto failed_lvds_priv;
gma_encoder->dev_priv = lvds_priv;
connector = &gma_connector->base;
encoder = &gma_encoder->base;
drm_connector_init(dev, connector,
&cdv_intel_lvds_connector_funcs,
DRM_MODE_CONNECTOR_LVDS);
drm_encoder_init(dev, encoder,
&cdv_intel_lvds_enc_funcs,
DRM_MODE_ENCODER_LVDS);
gma_connector_attach_encoder(gma_connector, gma_encoder);
gma_encoder->type = INTEL_OUTPUT_LVDS;
drm_encoder_helper_add(encoder, &cdv_intel_lvds_helper_funcs);
drm_connector_helper_add(connector,
&cdv_intel_lvds_connector_helper_funcs);
connector->display_info.subpixel_order = SubPixelHorizontalRGB;
connector->interlace_allowed = false;
connector->doublescan_allowed = false;
/*Attach connector properties*/
drm_object_attach_property(&connector->base,
dev->mode_config.scaling_mode_property,
DRM_MODE_SCALE_FULLSCREEN);
drm_object_attach_property(&connector->base,
dev_priv->backlight_property,
BRIGHTNESS_MAX_LEVEL);
/**
* Set up I2C bus
* FIXME: distroy i2c_bus when exit
*/
gma_encoder->i2c_bus = psb_intel_i2c_create(dev,
GPIOB,
"LVDSBLC_B");
if (!gma_encoder->i2c_bus) {
dev_printk(KERN_ERR,
&dev->pdev->dev, "I2C bus registration failed.\n");
goto failed_blc_i2c;
}
gma_encoder->i2c_bus->slave_addr = 0x2C;
dev_priv->lvds_i2c_bus = gma_encoder->i2c_bus;
/*
* LVDS discovery:
* 1) check for EDID on DDC
* 2) check for VBT data
* 3) check to see if LVDS is already on
* if none of the above, no panel
* 4) make sure lid is open
* if closed, act like it's not there for now
*/
/* Set up the DDC bus. */
gma_encoder->ddc_bus = psb_intel_i2c_create(dev,
GPIOC,
"LVDSDDC_C");
if (!gma_encoder->ddc_bus) {
dev_printk(KERN_ERR, &dev->pdev->dev,
"DDC bus registration " "failed.\n");
goto failed_ddc;
}
/*
* Attempt to get the fixed panel mode from DDC. Assume that the
* preferred mode is the right one.
*/
psb_intel_ddc_get_modes(connector,
&gma_encoder->ddc_bus->adapter);
list_for_each_entry(scan, &connector->probed_modes, head) {
if (scan->type & DRM_MODE_TYPE_PREFERRED) {
mode_dev->panel_fixed_mode =
drm_mode_duplicate(dev, scan);
goto out; /* FIXME: check for quirks */
}
}
/* Failed to get EDID, what about VBT? do we need this?*/
if (dev_priv->lfp_lvds_vbt_mode) {
mode_dev->panel_fixed_mode =
drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode);
if (mode_dev->panel_fixed_mode) {
mode_dev->panel_fixed_mode->type |=
DRM_MODE_TYPE_PREFERRED;
goto out; /* FIXME: check for quirks */
}
}
/*
* If we didn't get EDID, try checking if the panel is already turned
* on. If so, assume that whatever is currently programmed is the
* correct mode.
*/
lvds = REG_READ(LVDS);
pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0;
crtc = psb_intel_get_crtc_from_pipe(dev, pipe);
if (crtc && (lvds & LVDS_PORT_EN)) {
mode_dev->panel_fixed_mode =
cdv_intel_crtc_mode_get(dev, crtc);
if (mode_dev->panel_fixed_mode) {
mode_dev->panel_fixed_mode->type |=
DRM_MODE_TYPE_PREFERRED;
goto out; /* FIXME: check for quirks */
}
}
/* If we still don't have a mode after all that, give up. */
if (!mode_dev->panel_fixed_mode) {
DRM_DEBUG
("Found no modes on the lvds, ignoring the LVDS\n");
goto failed_find;
}
/* setup PWM */
{
u32 pwm;
pwm = REG_READ(BLC_PWM_CTL2);
if (pipe == 1)
pwm |= PWM_PIPE_B;
else
pwm &= ~PWM_PIPE_B;
pwm |= PWM_ENABLE;
REG_WRITE(BLC_PWM_CTL2, pwm);
}
out:
drm_sysfs_connector_add(connector);
return;
failed_find:
printk(KERN_ERR "Failed find\n");
if (gma_encoder->ddc_bus)
psb_intel_i2c_destroy(gma_encoder->ddc_bus);
failed_ddc:
printk(KERN_ERR "Failed DDC\n");
if (gma_encoder->i2c_bus)
psb_intel_i2c_destroy(gma_encoder->i2c_bus);
failed_blc_i2c:
printk(KERN_ERR "Failed BLC\n");
drm_encoder_cleanup(encoder);
drm_connector_cleanup(connector);
kfree(lvds_priv);
failed_lvds_priv:
kfree(gma_connector);
failed_connector:
kfree(gma_encoder);
}