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Regard whitespace Rev 4559 → Rev 4560

/drivers/video/drm/i915/intel_panel.c
50,23 → 50,22
struct intel_crtc_config *pipe_config,
int fitting_mode)
{
struct drm_display_mode *mode, *adjusted_mode;
struct drm_display_mode *adjusted_mode;
int x, y, width, height;
 
mode = &pipe_config->requested_mode;
adjusted_mode = &pipe_config->adjusted_mode;
 
x = y = width = height = 0;
 
/* Native modes don't need fitting */
if (adjusted_mode->hdisplay == mode->hdisplay &&
adjusted_mode->vdisplay == mode->vdisplay)
if (adjusted_mode->hdisplay == pipe_config->pipe_src_w &&
adjusted_mode->vdisplay == pipe_config->pipe_src_h)
goto done;
 
switch (fitting_mode) {
case DRM_MODE_SCALE_CENTER:
width = mode->hdisplay;
height = mode->vdisplay;
width = pipe_config->pipe_src_w;
height = pipe_config->pipe_src_h;
x = (adjusted_mode->hdisplay - width + 1)/2;
y = (adjusted_mode->vdisplay - height + 1)/2;
break;
74,10 → 73,12
case DRM_MODE_SCALE_ASPECT:
/* Scale but preserve the aspect ratio */
{
u32 scaled_width = adjusted_mode->hdisplay * mode->vdisplay;
u32 scaled_height = mode->hdisplay * adjusted_mode->vdisplay;
u32 scaled_width = adjusted_mode->hdisplay
* pipe_config->pipe_src_h;
u32 scaled_height = pipe_config->pipe_src_w
* adjusted_mode->vdisplay;
if (scaled_width > scaled_height) { /* pillar */
width = scaled_height / mode->vdisplay;
width = scaled_height / pipe_config->pipe_src_h;
if (width & 1)
width++;
x = (adjusted_mode->hdisplay - width + 1) / 2;
84,7 → 85,7
y = 0;
height = adjusted_mode->vdisplay;
} else if (scaled_width < scaled_height) { /* letter */
height = scaled_width / mode->hdisplay;
height = scaled_width / pipe_config->pipe_src_w;
if (height & 1)
height++;
y = (adjusted_mode->vdisplay - height + 1) / 2;
171,54 → 172,37
return (FACTOR * ratio + FACTOR/2) / FACTOR;
}
 
void intel_gmch_panel_fitting(struct intel_crtc *intel_crtc,
struct intel_crtc_config *pipe_config,
int fitting_mode)
static void i965_scale_aspect(struct intel_crtc_config *pipe_config,
u32 *pfit_control)
{
struct drm_device *dev = intel_crtc->base.dev;
u32 pfit_control = 0, pfit_pgm_ratios = 0, border = 0;
struct drm_display_mode *mode, *adjusted_mode;
 
mode = &pipe_config->requested_mode;
adjusted_mode = &pipe_config->adjusted_mode;
 
/* Native modes don't need fitting */
if (adjusted_mode->hdisplay == mode->hdisplay &&
adjusted_mode->vdisplay == mode->vdisplay)
goto out;
 
switch (fitting_mode) {
case DRM_MODE_SCALE_CENTER:
/*
* For centered modes, we have to calculate border widths &
* heights and modify the values programmed into the CRTC.
*/
centre_horizontally(adjusted_mode, mode->hdisplay);
centre_vertically(adjusted_mode, mode->vdisplay);
border = LVDS_BORDER_ENABLE;
break;
case DRM_MODE_SCALE_ASPECT:
/* Scale but preserve the aspect ratio */
if (INTEL_INFO(dev)->gen >= 4) {
struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode;
u32 scaled_width = adjusted_mode->hdisplay *
mode->vdisplay;
u32 scaled_height = mode->hdisplay *
pipe_config->pipe_src_h;
u32 scaled_height = pipe_config->pipe_src_w *
adjusted_mode->vdisplay;
 
/* 965+ is easy, it does everything in hw */
if (scaled_width > scaled_height)
pfit_control |= PFIT_ENABLE |
*pfit_control |= PFIT_ENABLE |
PFIT_SCALING_PILLAR;
else if (scaled_width < scaled_height)
pfit_control |= PFIT_ENABLE |
*pfit_control |= PFIT_ENABLE |
PFIT_SCALING_LETTER;
else if (adjusted_mode->hdisplay != mode->hdisplay)
pfit_control |= PFIT_ENABLE | PFIT_SCALING_AUTO;
} else {
else if (adjusted_mode->hdisplay != pipe_config->pipe_src_w)
*pfit_control |= PFIT_ENABLE | PFIT_SCALING_AUTO;
}
 
static void i9xx_scale_aspect(struct intel_crtc_config *pipe_config,
u32 *pfit_control, u32 *pfit_pgm_ratios,
u32 *border)
{
struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode;
u32 scaled_width = adjusted_mode->hdisplay *
mode->vdisplay;
u32 scaled_height = mode->hdisplay *
pipe_config->pipe_src_h;
u32 scaled_height = pipe_config->pipe_src_w *
adjusted_mode->vdisplay;
u32 bits;
 
/*
* For earlier chips we have to calculate the scaling
* ratio by hand and program it into the
227,14 → 211,16
if (scaled_width > scaled_height) { /* pillar */
centre_horizontally(adjusted_mode,
scaled_height /
mode->vdisplay);
pipe_config->pipe_src_h);
 
border = LVDS_BORDER_ENABLE;
if (mode->vdisplay != adjusted_mode->vdisplay) {
u32 bits = panel_fitter_scaling(mode->vdisplay, adjusted_mode->vdisplay);
pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT |
*border = LVDS_BORDER_ENABLE;
if (pipe_config->pipe_src_h != adjusted_mode->vdisplay) {
bits = panel_fitter_scaling(pipe_config->pipe_src_h,
adjusted_mode->vdisplay);
 
*pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT |
bits << PFIT_VERT_SCALE_SHIFT);
pfit_control |= (PFIT_ENABLE |
*pfit_control |= (PFIT_ENABLE |
VERT_INTERP_BILINEAR |
HORIZ_INTERP_BILINEAR);
}
241,33 → 227,68
} else if (scaled_width < scaled_height) { /* letter */
centre_vertically(adjusted_mode,
scaled_width /
mode->hdisplay);
pipe_config->pipe_src_w);
 
border = LVDS_BORDER_ENABLE;
if (mode->hdisplay != adjusted_mode->hdisplay) {
u32 bits = panel_fitter_scaling(mode->hdisplay, adjusted_mode->hdisplay);
pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT |
*border = LVDS_BORDER_ENABLE;
if (pipe_config->pipe_src_w != adjusted_mode->hdisplay) {
bits = panel_fitter_scaling(pipe_config->pipe_src_w,
adjusted_mode->hdisplay);
 
*pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT |
bits << PFIT_VERT_SCALE_SHIFT);
pfit_control |= (PFIT_ENABLE |
*pfit_control |= (PFIT_ENABLE |
VERT_INTERP_BILINEAR |
HORIZ_INTERP_BILINEAR);
}
} else {
/* Aspects match, Let hw scale both directions */
pfit_control |= (PFIT_ENABLE |
*pfit_control |= (PFIT_ENABLE |
VERT_AUTO_SCALE | HORIZ_AUTO_SCALE |
VERT_INTERP_BILINEAR |
HORIZ_INTERP_BILINEAR);
}
}
 
void intel_gmch_panel_fitting(struct intel_crtc *intel_crtc,
struct intel_crtc_config *pipe_config,
int fitting_mode)
{
struct drm_device *dev = intel_crtc->base.dev;
u32 pfit_control = 0, pfit_pgm_ratios = 0, border = 0;
struct drm_display_mode *adjusted_mode;
 
adjusted_mode = &pipe_config->adjusted_mode;
 
/* Native modes don't need fitting */
if (adjusted_mode->hdisplay == pipe_config->pipe_src_w &&
adjusted_mode->vdisplay == pipe_config->pipe_src_h)
goto out;
 
switch (fitting_mode) {
case DRM_MODE_SCALE_CENTER:
/*
* For centered modes, we have to calculate border widths &
* heights and modify the values programmed into the CRTC.
*/
centre_horizontally(adjusted_mode, pipe_config->pipe_src_w);
centre_vertically(adjusted_mode, pipe_config->pipe_src_h);
border = LVDS_BORDER_ENABLE;
break;
case DRM_MODE_SCALE_ASPECT:
/* Scale but preserve the aspect ratio */
if (INTEL_INFO(dev)->gen >= 4)
i965_scale_aspect(pipe_config, &pfit_control);
else
i9xx_scale_aspect(pipe_config, &pfit_control,
&pfit_pgm_ratios, &border);
break;
case DRM_MODE_SCALE_FULLSCREEN:
/*
* Full scaling, even if it changes the aspect ratio.
* Fortunately this is all done for us in hw.
*/
if (mode->vdisplay != adjusted_mode->vdisplay ||
mode->hdisplay != adjusted_mode->hdisplay) {
if (pipe_config->pipe_src_h != adjusted_mode->vdisplay ||
pipe_config->pipe_src_w != adjusted_mode->hdisplay) {
pfit_control |= PFIT_ENABLE;
if (INTEL_INFO(dev)->gen >= 4)
pfit_control |= PFIT_SCALING_AUTO;
304,192 → 325,263
pipe_config->gmch_pfit.lvds_border_bits = border;
}
 
static int is_backlight_combination_mode(struct drm_device *dev)
static int i915_panel_invert_brightness;
MODULE_PARM_DESC(invert_brightness, "Invert backlight brightness "
"(-1 force normal, 0 machine defaults, 1 force inversion), please "
"report PCI device ID, subsystem vendor and subsystem device ID "
"to dri-devel@lists.freedesktop.org, if your machine needs it. "
"It will then be included in an upcoming module version.");
module_param_named(invert_brightness, i915_panel_invert_brightness, int, 0600);
static u32 intel_panel_compute_brightness(struct intel_connector *connector,
u32 val)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
 
if (INTEL_INFO(dev)->gen >= 4)
return I915_READ(BLC_PWM_CTL2) & BLM_COMBINATION_MODE;
WARN_ON(panel->backlight.max == 0);
 
if (IS_GEN2(dev))
return I915_READ(BLC_PWM_CTL) & BLM_LEGACY_MODE;
if (i915_panel_invert_brightness < 0)
return val;
 
return 0;
if (i915_panel_invert_brightness > 0 ||
dev_priv->quirks & QUIRK_INVERT_BRIGHTNESS) {
return panel->backlight.max - val;
}
 
/* XXX: query mode clock or hardware clock and program max PWM appropriately
* when it's 0.
*/
static u32 i915_read_blc_pwm_ctl(struct drm_device *dev)
return val;
}
 
static u32 bdw_get_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u32 val;
 
// WARN_ON_SMP(!spin_is_locked(&dev_priv->backlight.lock));
return I915_READ(BLC_PWM_PCH_CTL2) & BACKLIGHT_DUTY_CYCLE_MASK;
}
 
/* Restore the CTL value if it lost, e.g. GPU reset */
static u32 pch_get_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
 
if (HAS_PCH_SPLIT(dev_priv->dev)) {
val = I915_READ(BLC_PWM_PCH_CTL2);
if (dev_priv->regfile.saveBLC_PWM_CTL2 == 0) {
dev_priv->regfile.saveBLC_PWM_CTL2 = val;
} else if (val == 0) {
val = dev_priv->regfile.saveBLC_PWM_CTL2;
I915_WRITE(BLC_PWM_PCH_CTL2, val);
return I915_READ(BLC_PWM_CPU_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
}
} else {
val = I915_READ(BLC_PWM_CTL);
if (dev_priv->regfile.saveBLC_PWM_CTL == 0) {
dev_priv->regfile.saveBLC_PWM_CTL = val;
if (INTEL_INFO(dev)->gen >= 4)
dev_priv->regfile.saveBLC_PWM_CTL2 =
I915_READ(BLC_PWM_CTL2);
} else if (val == 0) {
val = dev_priv->regfile.saveBLC_PWM_CTL;
I915_WRITE(BLC_PWM_CTL, val);
if (INTEL_INFO(dev)->gen >= 4)
I915_WRITE(BLC_PWM_CTL2,
dev_priv->regfile.saveBLC_PWM_CTL2);
}
}
 
return val;
}
 
static u32 intel_panel_get_max_backlight(struct drm_device *dev)
static u32 i9xx_get_backlight(struct intel_connector *connector)
{
u32 max;
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
u32 val;
 
max = i915_read_blc_pwm_ctl(dev);
 
if (HAS_PCH_SPLIT(dev)) {
max >>= 16;
} else {
val = I915_READ(BLC_PWM_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
if (INTEL_INFO(dev)->gen < 4)
max >>= 17;
else
max >>= 16;
val >>= 1;
 
if (is_backlight_combination_mode(dev))
max *= 0xff;
if (panel->backlight.combination_mode) {
u8 lbpc;
 
pci_read_config_byte(dev->pdev, PCI_LBPC, &lbpc);
val *= lbpc;
}
 
DRM_DEBUG_DRIVER("max backlight PWM = %d\n", max);
 
return max;
return val;
}
 
static int i915_panel_invert_brightness;
MODULE_PARM_DESC(invert_brightness, "Invert backlight brightness "
"(-1 force normal, 0 machine defaults, 1 force inversion), please "
"report PCI device ID, subsystem vendor and subsystem device ID "
"to dri-devel@lists.freedesktop.org, if your machine needs it. "
"It will then be included in an upcoming module version.");
module_param_named(invert_brightness, i915_panel_invert_brightness, int, 0600);
static u32 intel_panel_compute_brightness(struct drm_device *dev, u32 val)
static u32 _vlv_get_backlight(struct drm_device *dev, enum pipe pipe)
{
struct drm_i915_private *dev_priv = dev->dev_private;
 
if (i915_panel_invert_brightness < 0)
return val;
 
if (i915_panel_invert_brightness > 0 ||
dev_priv->quirks & QUIRK_INVERT_BRIGHTNESS) {
u32 max = intel_panel_get_max_backlight(dev);
if (max)
return max - val;
return I915_READ(VLV_BLC_PWM_CTL(pipe)) & BACKLIGHT_DUTY_CYCLE_MASK;
}
 
return val;
static u32 vlv_get_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
enum pipe pipe = intel_get_pipe_from_connector(connector);
 
return _vlv_get_backlight(dev, pipe);
}
 
static u32 intel_panel_get_backlight(struct drm_device *dev)
static u32 intel_panel_get_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u32 val;
unsigned long flags;
 
spin_lock_irqsave(&dev_priv->backlight.lock, flags);
spin_lock_irqsave(&dev_priv->backlight_lock, flags);
 
if (HAS_PCH_SPLIT(dev)) {
val = I915_READ(BLC_PWM_CPU_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
} else {
val = I915_READ(BLC_PWM_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
if (INTEL_INFO(dev)->gen < 4)
val >>= 1;
val = dev_priv->display.get_backlight(connector);
val = intel_panel_compute_brightness(connector, val);
 
if (is_backlight_combination_mode(dev)) {
u8 lbpc;
spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
 
pci_read_config_byte(dev->pdev, PCI_LBPC, &lbpc);
val *= lbpc;
}
}
 
val = intel_panel_compute_brightness(dev, val);
 
spin_unlock_irqrestore(&dev_priv->backlight.lock, flags);
 
DRM_DEBUG_DRIVER("get backlight PWM = %d\n", val);
return val;
}
 
static void intel_pch_panel_set_backlight(struct drm_device *dev, u32 level)
static void bdw_set_backlight(struct intel_connector *connector, u32 level)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u32 val = I915_READ(BLC_PWM_CPU_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK;
I915_WRITE(BLC_PWM_CPU_CTL, val | level);
u32 val = I915_READ(BLC_PWM_PCH_CTL2) & ~BACKLIGHT_DUTY_CYCLE_MASK;
I915_WRITE(BLC_PWM_PCH_CTL2, val | level);
}
 
static void intel_panel_actually_set_backlight(struct drm_device *dev, u32 level)
static void pch_set_backlight(struct intel_connector *connector, u32 level)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u32 tmp;
 
DRM_DEBUG_DRIVER("set backlight PWM = %d\n", level);
level = intel_panel_compute_brightness(dev, level);
tmp = I915_READ(BLC_PWM_CPU_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK;
I915_WRITE(BLC_PWM_CPU_CTL, tmp | level);
}
 
if (HAS_PCH_SPLIT(dev))
return intel_pch_panel_set_backlight(dev, level);
static void i9xx_set_backlight(struct intel_connector *connector, u32 level)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
u32 tmp, mask;
 
if (is_backlight_combination_mode(dev)) {
u32 max = intel_panel_get_max_backlight(dev);
WARN_ON(panel->backlight.max == 0);
 
if (panel->backlight.combination_mode) {
u8 lbpc;
 
/* we're screwed, but keep behaviour backwards compatible */
if (!max)
max = 1;
 
lbpc = level * 0xfe / max + 1;
lbpc = level * 0xfe / panel->backlight.max + 1;
level /= lbpc;
pci_write_config_byte(dev->pdev, PCI_LBPC, lbpc);
}
 
tmp = I915_READ(BLC_PWM_CTL);
if (INTEL_INFO(dev)->gen < 4)
if (IS_GEN4(dev)) {
mask = BACKLIGHT_DUTY_CYCLE_MASK;
} else {
level <<= 1;
tmp &= ~BACKLIGHT_DUTY_CYCLE_MASK;
mask = BACKLIGHT_DUTY_CYCLE_MASK_PNV;
}
 
tmp = I915_READ(BLC_PWM_CTL) & ~mask;
I915_WRITE(BLC_PWM_CTL, tmp | level);
}
 
static void vlv_set_backlight(struct intel_connector *connector, u32 level)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
enum pipe pipe = intel_get_pipe_from_connector(connector);
u32 tmp;
 
tmp = I915_READ(VLV_BLC_PWM_CTL(pipe)) & ~BACKLIGHT_DUTY_CYCLE_MASK;
I915_WRITE(VLV_BLC_PWM_CTL(pipe), tmp | level);
}
 
static void
intel_panel_actually_set_backlight(struct intel_connector *connector, u32 level)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
 
DRM_DEBUG_DRIVER("set backlight PWM = %d\n", level);
 
level = intel_panel_compute_brightness(connector, level);
dev_priv->display.set_backlight(connector, level);
}
 
/* set backlight brightness to level in range [0..max] */
void intel_panel_set_backlight(struct drm_device *dev, u32 level, u32 max)
void intel_panel_set_backlight(struct intel_connector *connector, u32 level,
u32 max)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
enum pipe pipe = intel_get_pipe_from_connector(connector);
u32 freq;
unsigned long flags;
 
dev_priv->backlight.level = level;
// if (dev_priv->backlight.device)
// dev_priv->backlight.device->props.brightness = level;
if (!panel->backlight.present || pipe == INVALID_PIPE)
return;
 
// if (dev_priv->backlight.enabled)
// intel_panel_actually_set_backlight(dev, level);
spin_lock_irqsave(&dev_priv->backlight_lock, flags);
 
WARN_ON(panel->backlight.max == 0);
 
/* scale to hardware max, but be careful to not overflow */
freq = panel->backlight.max;
if (freq < max)
level = level * freq / max;
else
level = freq / max * level;
 
panel->backlight.level = level;
// if (panel->backlight.device)
// panel->backlight.device->props.brightness = level;
 
if (panel->backlight.enabled)
intel_panel_actually_set_backlight(connector, level);
 
spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
}
 
void intel_panel_disable_backlight(struct drm_device *dev)
static void pch_disable_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u32 tmp;
 
intel_panel_actually_set_backlight(connector, 0);
 
tmp = I915_READ(BLC_PWM_CPU_CTL2);
I915_WRITE(BLC_PWM_CPU_CTL2, tmp & ~BLM_PWM_ENABLE);
 
tmp = I915_READ(BLC_PWM_PCH_CTL1);
I915_WRITE(BLC_PWM_PCH_CTL1, tmp & ~BLM_PCH_PWM_ENABLE);
}
 
static void i9xx_disable_backlight(struct intel_connector *connector)
{
intel_panel_actually_set_backlight(connector, 0);
}
 
static void i965_disable_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u32 tmp;
 
intel_panel_actually_set_backlight(connector, 0);
 
tmp = I915_READ(BLC_PWM_CTL2);
I915_WRITE(BLC_PWM_CTL2, tmp & ~BLM_PWM_ENABLE);
}
 
static void vlv_disable_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
enum pipe pipe = intel_get_pipe_from_connector(connector);
u32 tmp;
 
intel_panel_actually_set_backlight(connector, 0);
 
tmp = I915_READ(VLV_BLC_PWM_CTL2(pipe));
I915_WRITE(VLV_BLC_PWM_CTL2(pipe), tmp & ~BLM_PWM_ENABLE);
}
 
void intel_panel_disable_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
enum pipe pipe = intel_get_pipe_from_connector(connector);
unsigned long flags;
 
if (!panel->backlight.present || pipe == INVALID_PIPE)
return;
 
/*
* Do not disable backlight on the vgaswitcheroo path. When switching
* away from i915, the other client may depend on i915 to handle the
501,102 → 593,217
return;
}
 
spin_lock_irqsave(&dev_priv->backlight.lock, flags);
spin_lock_irqsave(&dev_priv->backlight_lock, flags);
 
dev_priv->backlight.enabled = false;
intel_panel_actually_set_backlight(dev, 0);
panel->backlight.enabled = false;
dev_priv->display.disable_backlight(connector);
 
if (INTEL_INFO(dev)->gen >= 4) {
uint32_t reg, tmp;
spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
}
 
reg = HAS_PCH_SPLIT(dev) ? BLC_PWM_CPU_CTL2 : BLC_PWM_CTL2;
static void bdw_enable_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
u32 pch_ctl1, pch_ctl2;
 
I915_WRITE(reg, I915_READ(reg) & ~BLM_PWM_ENABLE);
 
if (HAS_PCH_SPLIT(dev)) {
tmp = I915_READ(BLC_PWM_PCH_CTL1);
tmp &= ~BLM_PCH_PWM_ENABLE;
I915_WRITE(BLC_PWM_PCH_CTL1, tmp);
pch_ctl1 = I915_READ(BLC_PWM_PCH_CTL1);
if (pch_ctl1 & BLM_PCH_PWM_ENABLE) {
DRM_DEBUG_KMS("pch backlight already enabled\n");
pch_ctl1 &= ~BLM_PCH_PWM_ENABLE;
I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);
}
}
 
spin_unlock_irqrestore(&dev_priv->backlight.lock, flags);
pch_ctl2 = panel->backlight.max << 16;
I915_WRITE(BLC_PWM_PCH_CTL2, pch_ctl2);
 
pch_ctl1 = 0;
if (panel->backlight.active_low_pwm)
pch_ctl1 |= BLM_PCH_POLARITY;
 
/* BDW always uses the pch pwm controls. */
pch_ctl1 |= BLM_PCH_OVERRIDE_ENABLE;
 
I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);
POSTING_READ(BLC_PWM_PCH_CTL1);
I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1 | BLM_PCH_PWM_ENABLE);
 
/* This won't stick until the above enable. */
intel_panel_actually_set_backlight(connector, panel->backlight.level);
}
 
void intel_panel_enable_backlight(struct drm_device *dev,
enum pipe pipe)
static void pch_enable_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
enum pipe pipe = intel_get_pipe_from_connector(connector);
enum transcoder cpu_transcoder =
intel_pipe_to_cpu_transcoder(dev_priv, pipe);
unsigned long flags;
u32 cpu_ctl2, pch_ctl1, pch_ctl2;
 
spin_lock_irqsave(&dev_priv->backlight.lock, flags);
cpu_ctl2 = I915_READ(BLC_PWM_CPU_CTL2);
if (cpu_ctl2 & BLM_PWM_ENABLE) {
WARN(1, "cpu backlight already enabled\n");
cpu_ctl2 &= ~BLM_PWM_ENABLE;
I915_WRITE(BLC_PWM_CPU_CTL2, cpu_ctl2);
}
 
if (dev_priv->backlight.level == 0) {
dev_priv->backlight.level = intel_panel_get_max_backlight(dev);
// if (dev_priv->backlight.device)
// dev_priv->backlight.device->props.brightness =
// dev_priv->backlight.level;
pch_ctl1 = I915_READ(BLC_PWM_PCH_CTL1);
if (pch_ctl1 & BLM_PCH_PWM_ENABLE) {
DRM_DEBUG_KMS("pch backlight already enabled\n");
pch_ctl1 &= ~BLM_PCH_PWM_ENABLE;
I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);
}
 
if (INTEL_INFO(dev)->gen >= 4) {
uint32_t reg, tmp;
if (cpu_transcoder == TRANSCODER_EDP)
cpu_ctl2 = BLM_TRANSCODER_EDP;
else
cpu_ctl2 = BLM_PIPE(cpu_transcoder);
I915_WRITE(BLC_PWM_CPU_CTL2, cpu_ctl2);
POSTING_READ(BLC_PWM_CPU_CTL2);
I915_WRITE(BLC_PWM_CPU_CTL2, cpu_ctl2 | BLM_PWM_ENABLE);
 
reg = HAS_PCH_SPLIT(dev) ? BLC_PWM_CPU_CTL2 : BLC_PWM_CTL2;
/* This won't stick until the above enable. */
intel_panel_actually_set_backlight(connector, panel->backlight.level);
 
pch_ctl2 = panel->backlight.max << 16;
I915_WRITE(BLC_PWM_PCH_CTL2, pch_ctl2);
 
tmp = I915_READ(reg);
pch_ctl1 = 0;
if (panel->backlight.active_low_pwm)
pch_ctl1 |= BLM_PCH_POLARITY;
 
/* Note that this can also get called through dpms changes. And
* we don't track the backlight dpms state, hence check whether
* we have to do anything first. */
if (tmp & BLM_PWM_ENABLE)
goto set_level;
I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);
POSTING_READ(BLC_PWM_PCH_CTL1);
I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1 | BLM_PCH_PWM_ENABLE);
}
 
if (INTEL_INFO(dev)->num_pipes == 3)
tmp &= ~BLM_PIPE_SELECT_IVB;
else
tmp &= ~BLM_PIPE_SELECT;
static void i9xx_enable_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
u32 ctl, freq;
 
if (cpu_transcoder == TRANSCODER_EDP)
tmp |= BLM_TRANSCODER_EDP;
else
tmp |= BLM_PIPE(cpu_transcoder);
tmp &= ~BLM_PWM_ENABLE;
ctl = I915_READ(BLC_PWM_CTL);
if (ctl & BACKLIGHT_DUTY_CYCLE_MASK_PNV) {
WARN(1, "backlight already enabled\n");
I915_WRITE(BLC_PWM_CTL, 0);
}
 
I915_WRITE(reg, tmp);
POSTING_READ(reg);
I915_WRITE(reg, tmp | BLM_PWM_ENABLE);
freq = panel->backlight.max;
if (panel->backlight.combination_mode)
freq /= 0xff;
 
if (HAS_PCH_SPLIT(dev) &&
!(dev_priv->quirks & QUIRK_NO_PCH_PWM_ENABLE)) {
tmp = I915_READ(BLC_PWM_PCH_CTL1);
tmp |= BLM_PCH_PWM_ENABLE;
tmp &= ~BLM_PCH_OVERRIDE_ENABLE;
I915_WRITE(BLC_PWM_PCH_CTL1, tmp);
ctl = freq << 17;
if (IS_GEN2(dev) && panel->backlight.combination_mode)
ctl |= BLM_LEGACY_MODE;
if (IS_PINEVIEW(dev) && panel->backlight.active_low_pwm)
ctl |= BLM_POLARITY_PNV;
 
I915_WRITE(BLC_PWM_CTL, ctl);
POSTING_READ(BLC_PWM_CTL);
 
/* XXX: combine this into above write? */
intel_panel_actually_set_backlight(connector, panel->backlight.level);
}
 
static void i965_enable_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
enum pipe pipe = intel_get_pipe_from_connector(connector);
u32 ctl, ctl2, freq;
 
ctl2 = I915_READ(BLC_PWM_CTL2);
if (ctl2 & BLM_PWM_ENABLE) {
WARN(1, "backlight already enabled\n");
ctl2 &= ~BLM_PWM_ENABLE;
I915_WRITE(BLC_PWM_CTL2, ctl2);
}
 
set_level:
/* Call below after setting BLC_PWM_CPU_CTL2 and BLC_PWM_PCH_CTL1.
* BLC_PWM_CPU_CTL may be cleared to zero automatically when these
* registers are set.
*/
dev_priv->backlight.enabled = true;
intel_panel_actually_set_backlight(dev, dev_priv->backlight.level);
freq = panel->backlight.max;
if (panel->backlight.combination_mode)
freq /= 0xff;
 
spin_unlock_irqrestore(&dev_priv->backlight.lock, flags);
ctl = freq << 16;
I915_WRITE(BLC_PWM_CTL, ctl);
 
/* XXX: combine this into above write? */
intel_panel_actually_set_backlight(connector, panel->backlight.level);
 
ctl2 = BLM_PIPE(pipe);
if (panel->backlight.combination_mode)
ctl2 |= BLM_COMBINATION_MODE;
if (panel->backlight.active_low_pwm)
ctl2 |= BLM_POLARITY_I965;
I915_WRITE(BLC_PWM_CTL2, ctl2);
POSTING_READ(BLC_PWM_CTL2);
I915_WRITE(BLC_PWM_CTL2, ctl2 | BLM_PWM_ENABLE);
}
 
static void intel_panel_init_backlight(struct drm_device *dev)
static void vlv_enable_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
enum pipe pipe = intel_get_pipe_from_connector(connector);
u32 ctl, ctl2;
 
dev_priv->backlight.level = intel_panel_get_backlight(dev);
dev_priv->backlight.enabled = dev_priv->backlight.level != 0;
ctl2 = I915_READ(VLV_BLC_PWM_CTL2(pipe));
if (ctl2 & BLM_PWM_ENABLE) {
WARN(1, "backlight already enabled\n");
ctl2 &= ~BLM_PWM_ENABLE;
I915_WRITE(VLV_BLC_PWM_CTL2(pipe), ctl2);
}
 
ctl = panel->backlight.max << 16;
I915_WRITE(VLV_BLC_PWM_CTL(pipe), ctl);
 
/* XXX: combine this into above write? */
intel_panel_actually_set_backlight(connector, panel->backlight.level);
 
ctl2 = 0;
if (panel->backlight.active_low_pwm)
ctl2 |= BLM_POLARITY_I965;
I915_WRITE(VLV_BLC_PWM_CTL2(pipe), ctl2);
POSTING_READ(VLV_BLC_PWM_CTL2(pipe));
I915_WRITE(VLV_BLC_PWM_CTL2(pipe), ctl2 | BLM_PWM_ENABLE);
}
 
void intel_panel_enable_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
enum pipe pipe = intel_get_pipe_from_connector(connector);
unsigned long flags;
 
if (!panel->backlight.present || pipe == INVALID_PIPE)
return;
 
DRM_DEBUG_KMS("pipe %c\n", pipe_name(pipe));
 
spin_lock_irqsave(&dev_priv->backlight_lock, flags);
 
WARN_ON(panel->backlight.max == 0);
 
if (panel->backlight.level == 0) {
panel->backlight.level = panel->backlight.max;
// if (panel->backlight.device)
// panel->backlight.device->props.brightness =
// panel->backlight.level;
}
 
dev_priv->display.enable_backlight(connector);
panel->backlight.enabled = true;
 
spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
}
 
enum drm_connector_status
intel_panel_detect(struct drm_device *dev)
{
619,85 → 826,378
}
}
 
#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
static int intel_panel_update_status(struct backlight_device *bd)
#if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
static int intel_backlight_device_update_status(struct backlight_device *bd)
{
struct drm_device *dev = bl_get_data(bd);
intel_panel_set_backlight(dev, bd->props.brightness,
struct intel_connector *connector = bl_get_data(bd);
struct drm_device *dev = connector->base.dev;
 
mutex_lock(&dev->mode_config.mutex);
DRM_DEBUG_KMS("updating intel_backlight, brightness=%d/%d\n",
bd->props.brightness, bd->props.max_brightness);
intel_panel_set_backlight(connector, bd->props.brightness,
bd->props.max_brightness);
mutex_unlock(&dev->mode_config.mutex);
return 0;
}
 
static int intel_panel_get_brightness(struct backlight_device *bd)
static int intel_backlight_device_get_brightness(struct backlight_device *bd)
{
struct drm_device *dev = bl_get_data(bd);
return intel_panel_get_backlight(dev);
struct intel_connector *connector = bl_get_data(bd);
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
 
intel_runtime_pm_get(dev_priv);
mutex_lock(&dev->mode_config.mutex);
ret = intel_panel_get_backlight(connector);
mutex_unlock(&dev->mode_config.mutex);
intel_runtime_pm_put(dev_priv);
 
return ret;
}
 
static const struct backlight_ops intel_panel_bl_ops = {
.update_status = intel_panel_update_status,
.get_brightness = intel_panel_get_brightness,
static const struct backlight_ops intel_backlight_device_ops = {
.update_status = intel_backlight_device_update_status,
.get_brightness = intel_backlight_device_get_brightness,
};
 
int intel_panel_setup_backlight(struct drm_connector *connector)
static int intel_backlight_device_register(struct intel_connector *connector)
{
struct drm_device *dev = connector->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
struct backlight_properties props;
unsigned long flags;
 
intel_panel_init_backlight(dev);
 
if (WARN_ON(dev_priv->backlight.device))
if (WARN_ON(panel->backlight.device))
return -ENODEV;
 
BUG_ON(panel->backlight.max == 0);
 
memset(&props, 0, sizeof(props));
props.type = BACKLIGHT_RAW;
props.brightness = dev_priv->backlight.level;
props.brightness = panel->backlight.level;
props.max_brightness = panel->backlight.max;
 
spin_lock_irqsave(&dev_priv->backlight.lock, flags);
props.max_brightness = intel_panel_get_max_backlight(dev);
spin_unlock_irqrestore(&dev_priv->backlight.lock, flags);
/*
* Note: using the same name independent of the connector prevents
* registration of multiple backlight devices in the driver.
*/
panel->backlight.device =
backlight_device_register("intel_backlight",
connector->base.kdev,
connector,
&intel_backlight_device_ops, &props);
 
if (props.max_brightness == 0) {
DRM_DEBUG_DRIVER("Failed to get maximum backlight value\n");
if (IS_ERR(panel->backlight.device)) {
DRM_ERROR("Failed to register backlight: %ld\n",
PTR_ERR(panel->backlight.device));
panel->backlight.device = NULL;
return -ENODEV;
}
dev_priv->backlight.device =
backlight_device_register("intel_backlight",
&connector->kdev, dev,
&intel_panel_bl_ops, &props);
return 0;
}
 
if (IS_ERR(dev_priv->backlight.device)) {
DRM_ERROR("Failed to register backlight: %ld\n",
PTR_ERR(dev_priv->backlight.device));
dev_priv->backlight.device = NULL;
static void intel_backlight_device_unregister(struct intel_connector *connector)
{
struct intel_panel *panel = &connector->panel;
 
if (panel->backlight.device) {
backlight_device_unregister(panel->backlight.device);
panel->backlight.device = NULL;
}
}
#else /* CONFIG_BACKLIGHT_CLASS_DEVICE */
static int intel_backlight_device_register(struct intel_connector *connector)
{
return 0;
}
static void intel_backlight_device_unregister(struct intel_connector *connector)
{
}
#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
 
/*
* Note: The setup hooks can't assume pipe is set!
*
* XXX: Query mode clock or hardware clock and program PWM modulation frequency
* appropriately when it's 0. Use VBT and/or sane defaults.
*/
static int bdw_setup_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
u32 pch_ctl1, pch_ctl2, val;
 
pch_ctl1 = I915_READ(BLC_PWM_PCH_CTL1);
panel->backlight.active_low_pwm = pch_ctl1 & BLM_PCH_POLARITY;
 
pch_ctl2 = I915_READ(BLC_PWM_PCH_CTL2);
panel->backlight.max = pch_ctl2 >> 16;
if (!panel->backlight.max)
return -ENODEV;
 
val = bdw_get_backlight(connector);
panel->backlight.level = intel_panel_compute_brightness(connector, val);
 
panel->backlight.enabled = (pch_ctl1 & BLM_PCH_PWM_ENABLE) &&
panel->backlight.level != 0;
 
return 0;
}
 
static int pch_setup_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
u32 cpu_ctl2, pch_ctl1, pch_ctl2, val;
 
pch_ctl1 = I915_READ(BLC_PWM_PCH_CTL1);
panel->backlight.active_low_pwm = pch_ctl1 & BLM_PCH_POLARITY;
 
pch_ctl2 = I915_READ(BLC_PWM_PCH_CTL2);
panel->backlight.max = pch_ctl2 >> 16;
if (!panel->backlight.max)
return -ENODEV;
 
val = pch_get_backlight(connector);
panel->backlight.level = intel_panel_compute_brightness(connector, val);
 
cpu_ctl2 = I915_READ(BLC_PWM_CPU_CTL2);
panel->backlight.enabled = (cpu_ctl2 & BLM_PWM_ENABLE) &&
(pch_ctl1 & BLM_PCH_PWM_ENABLE) && panel->backlight.level != 0;
 
return 0;
}
 
void intel_panel_destroy_backlight(struct drm_device *dev)
static int i9xx_setup_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
if (dev_priv->backlight.device) {
backlight_device_unregister(dev_priv->backlight.device);
dev_priv->backlight.device = NULL;
struct intel_panel *panel = &connector->panel;
u32 ctl, val;
 
ctl = I915_READ(BLC_PWM_CTL);
 
if (IS_GEN2(dev))
panel->backlight.combination_mode = ctl & BLM_LEGACY_MODE;
 
if (IS_PINEVIEW(dev))
panel->backlight.active_low_pwm = ctl & BLM_POLARITY_PNV;
 
panel->backlight.max = ctl >> 17;
if (panel->backlight.combination_mode)
panel->backlight.max *= 0xff;
 
if (!panel->backlight.max)
return -ENODEV;
 
val = i9xx_get_backlight(connector);
panel->backlight.level = intel_panel_compute_brightness(connector, val);
 
panel->backlight.enabled = panel->backlight.level != 0;
 
return 0;
}
 
static int i965_setup_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
u32 ctl, ctl2, val;
 
ctl2 = I915_READ(BLC_PWM_CTL2);
panel->backlight.combination_mode = ctl2 & BLM_COMBINATION_MODE;
panel->backlight.active_low_pwm = ctl2 & BLM_POLARITY_I965;
 
ctl = I915_READ(BLC_PWM_CTL);
panel->backlight.max = ctl >> 16;
if (panel->backlight.combination_mode)
panel->backlight.max *= 0xff;
 
if (!panel->backlight.max)
return -ENODEV;
 
val = i9xx_get_backlight(connector);
panel->backlight.level = intel_panel_compute_brightness(connector, val);
 
panel->backlight.enabled = (ctl2 & BLM_PWM_ENABLE) &&
panel->backlight.level != 0;
 
return 0;
}
#else
 
static int vlv_setup_backlight(struct intel_connector *connector)
{
struct drm_device *dev = connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_panel *panel = &connector->panel;
enum pipe pipe;
u32 ctl, ctl2, val;
 
for_each_pipe(pipe) {
u32 cur_val = I915_READ(VLV_BLC_PWM_CTL(pipe));
 
/* Skip if the modulation freq is already set */
if (cur_val & ~BACKLIGHT_DUTY_CYCLE_MASK)
continue;
 
cur_val &= BACKLIGHT_DUTY_CYCLE_MASK;
I915_WRITE(VLV_BLC_PWM_CTL(pipe), (0xf42 << 16) |
cur_val);
}
 
ctl2 = I915_READ(VLV_BLC_PWM_CTL2(PIPE_A));
panel->backlight.active_low_pwm = ctl2 & BLM_POLARITY_I965;
 
ctl = I915_READ(VLV_BLC_PWM_CTL(PIPE_A));
panel->backlight.max = ctl >> 16;
if (!panel->backlight.max)
return -ENODEV;
 
val = _vlv_get_backlight(dev, PIPE_A);
panel->backlight.level = intel_panel_compute_brightness(connector, val);
 
panel->backlight.enabled = (ctl2 & BLM_PWM_ENABLE) &&
panel->backlight.level != 0;
 
return 0;
}
 
int intel_panel_setup_backlight(struct drm_connector *connector)
{
intel_panel_init_backlight(connector->dev);
struct drm_device *dev = connector->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_connector *intel_connector = to_intel_connector(connector);
struct intel_panel *panel = &intel_connector->panel;
unsigned long flags;
int ret;
 
/* set level and max in panel struct */
spin_lock_irqsave(&dev_priv->backlight_lock, flags);
ret = dev_priv->display.setup_backlight(intel_connector);
spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
 
if (ret) {
DRM_DEBUG_KMS("failed to setup backlight for connector %s\n",
drm_get_connector_name(connector));
return ret;
}
 
intel_backlight_device_register(intel_connector);
 
panel->backlight.present = true;
 
DRM_DEBUG_KMS("backlight initialized, %s, brightness %u/%u, "
"sysfs interface %sregistered\n",
panel->backlight.enabled ? "enabled" : "disabled",
panel->backlight.level, panel->backlight.max,
panel->backlight.device ? "" : "not ");
 
return 0;
}
 
void intel_panel_destroy_backlight(struct drm_device *dev)
void intel_panel_destroy_backlight(struct drm_connector *connector)
{
return;
struct intel_connector *intel_connector = to_intel_connector(connector);
struct intel_panel *panel = &intel_connector->panel;
 
panel->backlight.present = false;
intel_backlight_device_unregister(intel_connector);
}
#endif
 
/**
* intel_find_panel_downclock - find the reduced downclock for LVDS in EDID
* @dev: drm device
* @fixed_mode : panel native mode
* @connector: LVDS/eDP connector
*
* Return downclock_avail
* Find the reduced downclock for LVDS/eDP in EDID.
*/
struct drm_display_mode *
intel_find_panel_downclock(struct drm_device *dev,
struct drm_display_mode *fixed_mode,
struct drm_connector *connector)
{
struct drm_display_mode *scan, *tmp_mode;
int temp_downclock;
 
temp_downclock = fixed_mode->clock;
tmp_mode = NULL;
 
list_for_each_entry(scan, &connector->probed_modes, head) {
/*
* If one mode has the same resolution with the fixed_panel
* mode while they have the different refresh rate, it means
* that the reduced downclock is found. In such
* case we can set the different FPx0/1 to dynamically select
* between low and high frequency.
*/
if (scan->hdisplay == fixed_mode->hdisplay &&
scan->hsync_start == fixed_mode->hsync_start &&
scan->hsync_end == fixed_mode->hsync_end &&
scan->htotal == fixed_mode->htotal &&
scan->vdisplay == fixed_mode->vdisplay &&
scan->vsync_start == fixed_mode->vsync_start &&
scan->vsync_end == fixed_mode->vsync_end &&
scan->vtotal == fixed_mode->vtotal) {
if (scan->clock < temp_downclock) {
/*
* The downclock is already found. But we
* expect to find the lower downclock.
*/
temp_downclock = scan->clock;
tmp_mode = scan;
}
}
}
 
if (temp_downclock < fixed_mode->clock)
return drm_mode_duplicate(dev, tmp_mode);
else
return NULL;
}
 
/* Set up chip specific backlight functions */
void intel_panel_init_backlight_funcs(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
 
if (IS_BROADWELL(dev)) {
dev_priv->display.setup_backlight = bdw_setup_backlight;
dev_priv->display.enable_backlight = bdw_enable_backlight;
dev_priv->display.disable_backlight = pch_disable_backlight;
dev_priv->display.set_backlight = bdw_set_backlight;
dev_priv->display.get_backlight = bdw_get_backlight;
} else if (HAS_PCH_SPLIT(dev)) {
dev_priv->display.setup_backlight = pch_setup_backlight;
dev_priv->display.enable_backlight = pch_enable_backlight;
dev_priv->display.disable_backlight = pch_disable_backlight;
dev_priv->display.set_backlight = pch_set_backlight;
dev_priv->display.get_backlight = pch_get_backlight;
} else if (IS_VALLEYVIEW(dev)) {
dev_priv->display.setup_backlight = vlv_setup_backlight;
dev_priv->display.enable_backlight = vlv_enable_backlight;
dev_priv->display.disable_backlight = vlv_disable_backlight;
dev_priv->display.set_backlight = vlv_set_backlight;
dev_priv->display.get_backlight = vlv_get_backlight;
} else if (IS_GEN4(dev)) {
dev_priv->display.setup_backlight = i965_setup_backlight;
dev_priv->display.enable_backlight = i965_enable_backlight;
dev_priv->display.disable_backlight = i965_disable_backlight;
dev_priv->display.set_backlight = i9xx_set_backlight;
dev_priv->display.get_backlight = i9xx_get_backlight;
} else {
dev_priv->display.setup_backlight = i9xx_setup_backlight;
dev_priv->display.enable_backlight = i9xx_enable_backlight;
dev_priv->display.disable_backlight = i9xx_disable_backlight;
dev_priv->display.set_backlight = i9xx_set_backlight;
dev_priv->display.get_backlight = i9xx_get_backlight;
}
}
 
int intel_panel_init(struct intel_panel *panel,
struct drm_display_mode *fixed_mode)
{
713,4 → 1213,8
 
if (panel->fixed_mode)
drm_mode_destroy(intel_connector->base.dev, panel->fixed_mode);
 
if (panel->downclock_mode)
drm_mode_destroy(intel_connector->base.dev,
panel->downclock_mode);
}