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drm/i915: hide unused intel_panel_set_backlight function 

Building i915 without backlight support results in a harmless warning
for intel_panel_set_backlight:

drivers/gpu/drm/i915/intel_panel.c:653:13: error: 'intel_panel_set_backlight' defined but not used [-Werror=unused-function]

This moves it into the CONFIG_BACKLIGHT_CLASS_DEVICE section that
its caller is in.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20171127151239.1813673-2-arnd@arndb.de
This commit is contained in:
Arnd Bergmann 2017-11-27 16:10:28 +01:00 committed by Daniel Vetter
parent 2de2d0b063
commit fd94d53e55
1 changed files with 44 additions and 44 deletions
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88
drivers/gpu/drm/i915/intel_panel.c
View File

@ -543,25 +543,6 @@ static u32 pwm_get_backlight(struct intel_connector *connector)
return DIV_ROUND_UP(duty_ns * 100, CRC_PMIC_PWM_PERIOD_NS);
}
static u32 intel_panel_get_backlight(struct intel_connector *connector)
{
struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
struct intel_panel *panel = &connector->panel;
u32 val = 0;
mutex_lock(&dev_priv->backlight_lock);
if (panel->backlight.enabled) {
val = panel->backlight.get(connector);
val = intel_panel_compute_brightness(connector, val);
}
mutex_unlock(&dev_priv->backlight_lock);
DRM_DEBUG_DRIVER("get backlight PWM = %d\n", val);
return val;
}
static void lpt_set_backlight(const struct drm_connector_state *conn_state, u32 level)
{
struct intel_connector *connector = to_intel_connector(conn_state->connector);
@ -649,31 +630,6 @@ intel_panel_actually_set_backlight(const struct drm_connector_state *conn_state,
panel->backlight.set(conn_state, level);
}
/* set backlight brightness to level in range [0..max], scaling wrt hw min */
static void intel_panel_set_backlight(const struct drm_connector_state *conn_state,
u32 user_level, u32 user_max)
{
struct intel_connector *connector = to_intel_connector(conn_state->connector);
struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
struct intel_panel *panel = &connector->panel;
u32 hw_level;
if (!panel->backlight.present)
return;
mutex_lock(&dev_priv->backlight_lock);
WARN_ON(panel->backlight.max == 0);
hw_level = scale_user_to_hw(connector, user_level, user_max);
panel->backlight.level = hw_level;
if (panel->backlight.enabled)
intel_panel_actually_set_backlight(conn_state, hw_level);
mutex_unlock(&dev_priv->backlight_lock);
}
/* set backlight brightness to level in range [0..max], assuming hw min is
* respected.
*/
@ -1182,6 +1138,50 @@ void intel_panel_enable_backlight(const struct intel_crtc_state *crtc_state,
}
#if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
static u32 intel_panel_get_backlight(struct intel_connector *connector)
{
struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
struct intel_panel *panel = &connector->panel;
u32 val = 0;
mutex_lock(&dev_priv->backlight_lock);
if (panel->backlight.enabled) {
val = panel->backlight.get(connector);
val = intel_panel_compute_brightness(connector, val);
}
mutex_unlock(&dev_priv->backlight_lock);
DRM_DEBUG_DRIVER("get backlight PWM = %d\n", val);
return val;
}
/* set backlight brightness to level in range [0..max], scaling wrt hw min */
static void intel_panel_set_backlight(const struct drm_connector_state *conn_state,
u32 user_level, u32 user_max)
{
struct intel_connector *connector = to_intel_connector(conn_state->connector);
struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
struct intel_panel *panel = &connector->panel;
u32 hw_level;
if (!panel->backlight.present)
return;
mutex_lock(&dev_priv->backlight_lock);
WARN_ON(panel->backlight.max == 0);
hw_level = scale_user_to_hw(connector, user_level, user_max);
panel->backlight.level = hw_level;
if (panel->backlight.enabled)
intel_panel_actually_set_backlight(conn_state, hw_level);
mutex_unlock(&dev_priv->backlight_lock);
}
static int intel_backlight_device_update_status(struct backlight_device *bd)
{
struct intel_connector *connector = bl_get_data(bd);