summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c')
-rw-r--r--drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c84
1 files changed, 50 insertions, 34 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
index dbfa6895795b..0722540d64ad 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
@@ -27,6 +27,7 @@
static void set_aux_backlight_enable(struct intel_dp *intel_dp, bool enable)
{
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
u8 reg_val = 0;
/* Early return when display use other mechanism to enable backlight. */
@@ -35,8 +36,8 @@ static void set_aux_backlight_enable(struct intel_dp *intel_dp, bool enable)
if (drm_dp_dpcd_readb(&intel_dp->aux, DP_EDP_DISPLAY_CONTROL_REGISTER,
&reg_val) < 0) {
- DRM_DEBUG_KMS("Failed to read DPCD register 0x%x\n",
- DP_EDP_DISPLAY_CONTROL_REGISTER);
+ drm_dbg_kms(&i915->drm, "Failed to read DPCD register 0x%x\n",
+ DP_EDP_DISPLAY_CONTROL_REGISTER);
return;
}
if (enable)
@@ -46,8 +47,8 @@ static void set_aux_backlight_enable(struct intel_dp *intel_dp, bool enable)
if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_EDP_DISPLAY_CONTROL_REGISTER,
reg_val) != 1) {
- DRM_DEBUG_KMS("Failed to %s aux backlight\n",
- enable ? "enable" : "disable");
+ drm_dbg_kms(&i915->drm, "Failed to %s aux backlight\n",
+ enable ? "enable" : "disable");
}
}
@@ -58,6 +59,7 @@ static void set_aux_backlight_enable(struct intel_dp *intel_dp, bool enable)
static u32 intel_dp_aux_get_backlight(struct intel_connector *connector)
{
struct intel_dp *intel_dp = intel_attached_dp(connector);
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
u8 read_val[2] = { 0x0 };
u8 mode_reg;
u16 level = 0;
@@ -65,8 +67,9 @@ static u32 intel_dp_aux_get_backlight(struct intel_connector *connector)
if (drm_dp_dpcd_readb(&intel_dp->aux,
DP_EDP_BACKLIGHT_MODE_SET_REGISTER,
&mode_reg) != 1) {
- DRM_DEBUG_KMS("Failed to read the DPCD register 0x%x\n",
- DP_EDP_BACKLIGHT_MODE_SET_REGISTER);
+ drm_dbg_kms(&i915->drm,
+ "Failed to read the DPCD register 0x%x\n",
+ DP_EDP_BACKLIGHT_MODE_SET_REGISTER);
return 0;
}
@@ -80,8 +83,8 @@ static u32 intel_dp_aux_get_backlight(struct intel_connector *connector)
if (drm_dp_dpcd_read(&intel_dp->aux, DP_EDP_BACKLIGHT_BRIGHTNESS_MSB,
&read_val, sizeof(read_val)) < 0) {
- DRM_DEBUG_KMS("Failed to read DPCD register 0x%x\n",
- DP_EDP_BACKLIGHT_BRIGHTNESS_MSB);
+ drm_dbg_kms(&i915->drm, "Failed to read DPCD register 0x%x\n",
+ DP_EDP_BACKLIGHT_BRIGHTNESS_MSB);
return 0;
}
level = read_val[0];
@@ -100,6 +103,7 @@ intel_dp_aux_set_backlight(const struct drm_connector_state *conn_state, u32 lev
{
struct intel_connector *connector = to_intel_connector(conn_state->connector);
struct intel_dp *intel_dp = intel_attached_dp(connector);
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
u8 vals[2] = { 0x0 };
vals[0] = level;
@@ -111,7 +115,8 @@ intel_dp_aux_set_backlight(const struct drm_connector_state *conn_state, u32 lev
}
if (drm_dp_dpcd_write(&intel_dp->aux, DP_EDP_BACKLIGHT_BRIGHTNESS_MSB,
vals, sizeof(vals)) < 0) {
- DRM_DEBUG_KMS("Failed to write aux backlight level\n");
+ drm_dbg_kms(&i915->drm,
+ "Failed to write aux backlight level\n");
return;
}
}
@@ -133,7 +138,8 @@ static bool intel_dp_aux_set_pwm_freq(struct intel_connector *connector)
freq = dev_priv->vbt.backlight.pwm_freq_hz;
if (!freq) {
- DRM_DEBUG_KMS("Use panel default backlight frequency\n");
+ drm_dbg_kms(&dev_priv->drm,
+ "Use panel default backlight frequency\n");
return false;
}
@@ -146,13 +152,14 @@ static bool intel_dp_aux_set_pwm_freq(struct intel_connector *connector)
fxp_max = DIV_ROUND_CLOSEST(fxp * 5, 4);
if (fxp_min > fxp_actual || fxp_actual > fxp_max) {
- DRM_DEBUG_KMS("Actual frequency out of range\n");
+ drm_dbg_kms(&dev_priv->drm, "Actual frequency out of range\n");
return false;
}
if (drm_dp_dpcd_writeb(&intel_dp->aux,
DP_EDP_BACKLIGHT_FREQ_SET, (u8) f) < 0) {
- DRM_DEBUG_KMS("Failed to write aux backlight freq\n");
+ drm_dbg_kms(&dev_priv->drm,
+ "Failed to write aux backlight freq\n");
return false;
}
return true;
@@ -163,13 +170,14 @@ static void intel_dp_aux_enable_backlight(const struct intel_crtc_state *crtc_st
{
struct intel_connector *connector = to_intel_connector(conn_state->connector);
struct intel_dp *intel_dp = intel_attached_dp(connector);
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
struct intel_panel *panel = &connector->panel;
u8 dpcd_buf, new_dpcd_buf, edp_backlight_mode;
if (drm_dp_dpcd_readb(&intel_dp->aux,
DP_EDP_BACKLIGHT_MODE_SET_REGISTER, &dpcd_buf) != 1) {
- DRM_DEBUG_KMS("Failed to read DPCD register 0x%x\n",
- DP_EDP_BACKLIGHT_MODE_SET_REGISTER);
+ drm_dbg_kms(&i915->drm, "Failed to read DPCD register 0x%x\n",
+ DP_EDP_BACKLIGHT_MODE_SET_REGISTER);
return;
}
@@ -186,7 +194,8 @@ static void intel_dp_aux_enable_backlight(const struct intel_crtc_state *crtc_st
if (drm_dp_dpcd_writeb(&intel_dp->aux,
DP_EDP_PWMGEN_BIT_COUNT,
panel->backlight.pwmgen_bit_count) < 0)
- DRM_DEBUG_KMS("Failed to write aux pwmgen bit count\n");
+ drm_dbg_kms(&i915->drm,
+ "Failed to write aux pwmgen bit count\n");
break;
@@ -203,7 +212,8 @@ static void intel_dp_aux_enable_backlight(const struct intel_crtc_state *crtc_st
if (new_dpcd_buf != dpcd_buf) {
if (drm_dp_dpcd_writeb(&intel_dp->aux,
DP_EDP_BACKLIGHT_MODE_SET_REGISTER, new_dpcd_buf) < 0) {
- DRM_DEBUG_KMS("Failed to write aux backlight mode\n");
+ drm_dbg_kms(&i915->drm,
+ "Failed to write aux backlight mode\n");
}
}
@@ -237,9 +247,11 @@ static u32 intel_dp_aux_calc_max_backlight(struct intel_connector *connector)
* minimum value will applied automatically. So no need to check that.
*/
freq = i915->vbt.backlight.pwm_freq_hz;
- DRM_DEBUG_KMS("VBT defined backlight frequency %u Hz\n", freq);
+ drm_dbg_kms(&i915->drm, "VBT defined backlight frequency %u Hz\n",
+ freq);
if (!freq) {
- DRM_DEBUG_KMS("Use panel default backlight frequency\n");
+ drm_dbg_kms(&i915->drm,
+ "Use panel default backlight frequency\n");
return max_backlight;
}
@@ -254,12 +266,14 @@ static u32 intel_dp_aux_calc_max_backlight(struct intel_connector *connector)
*/
if (drm_dp_dpcd_readb(&intel_dp->aux,
DP_EDP_PWMGEN_BIT_COUNT_CAP_MIN, &pn_min) != 1) {
- DRM_DEBUG_KMS("Failed to read pwmgen bit count cap min\n");
+ drm_dbg_kms(&i915->drm,
+ "Failed to read pwmgen bit count cap min\n");
return max_backlight;
}
if (drm_dp_dpcd_readb(&intel_dp->aux,
DP_EDP_PWMGEN_BIT_COUNT_CAP_MAX, &pn_max) != 1) {
- DRM_DEBUG_KMS("Failed to read pwmgen bit count cap max\n");
+ drm_dbg_kms(&i915->drm,
+ "Failed to read pwmgen bit count cap max\n");
return max_backlight;
}
pn_min &= DP_EDP_PWMGEN_BIT_COUNT_MASK;
@@ -268,7 +282,8 @@ static u32 intel_dp_aux_calc_max_backlight(struct intel_connector *connector)
fxp_min = DIV_ROUND_CLOSEST(fxp * 3, 4);
fxp_max = DIV_ROUND_CLOSEST(fxp * 5, 4);
if (fxp_min < (1 << pn_min) || (255 << pn_max) < fxp_max) {
- DRM_DEBUG_KMS("VBT defined backlight frequency out of range\n");
+ drm_dbg_kms(&i915->drm,
+ "VBT defined backlight frequency out of range\n");
return max_backlight;
}
@@ -279,10 +294,11 @@ static u32 intel_dp_aux_calc_max_backlight(struct intel_connector *connector)
break;
}
- DRM_DEBUG_KMS("Using eDP pwmgen bit count of %d\n", pn);
+ drm_dbg_kms(&i915->drm, "Using eDP pwmgen bit count of %d\n", pn);
if (drm_dp_dpcd_writeb(&intel_dp->aux,
DP_EDP_PWMGEN_BIT_COUNT, pn) < 0) {
- DRM_DEBUG_KMS("Failed to write aux pwmgen bit count\n");
+ drm_dbg_kms(&i915->drm,
+ "Failed to write aux pwmgen bit count\n");
return max_backlight;
}
panel->backlight.pwmgen_bit_count = pn;
@@ -312,6 +328,7 @@ static bool
intel_dp_aux_display_control_capable(struct intel_connector *connector)
{
struct intel_dp *intel_dp = intel_attached_dp(connector);
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
/* Check the eDP Display control capabilities registers to determine if
* the panel can support backlight control over the aux channel
@@ -319,7 +336,7 @@ intel_dp_aux_display_control_capable(struct intel_connector *connector)
if (intel_dp->edp_dpcd[1] & DP_EDP_TCON_BACKLIGHT_ADJUSTMENT_CAP &&
(intel_dp->edp_dpcd[2] & DP_EDP_BACKLIGHT_BRIGHTNESS_AUX_SET_CAP) &&
!(intel_dp->edp_dpcd[2] & DP_EDP_BACKLIGHT_BRIGHTNESS_PWM_PIN_CAP)) {
- DRM_DEBUG_KMS("AUX Backlight Control Supported!\n");
+ drm_dbg_kms(&i915->drm, "AUX Backlight Control Supported!\n");
return true;
}
return false;
@@ -329,8 +346,7 @@ int intel_dp_aux_init_backlight_funcs(struct intel_connector *intel_connector)
{
struct intel_panel *panel = &intel_connector->panel;
struct intel_dp *intel_dp = enc_to_intel_dp(intel_connector->encoder);
- struct drm_device *dev = intel_connector->base.dev;
- struct drm_i915_private *dev_priv = to_i915(dev);
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
if (i915_modparams.enable_dpcd_backlight == 0 ||
!intel_dp_aux_display_control_capable(intel_connector))
@@ -340,18 +356,18 @@ int intel_dp_aux_init_backlight_funcs(struct intel_connector *intel_connector)
* There are a lot of machines that don't advertise the backlight
* control interface to use properly in their VBIOS, :\
*/
- if (dev_priv->vbt.backlight.type !=
+ if (i915->vbt.backlight.type !=
INTEL_BACKLIGHT_VESA_EDP_AUX_INTERFACE &&
i915_modparams.enable_dpcd_backlight != 1 &&
!drm_dp_has_quirk(&intel_dp->desc, intel_dp->edid_quirks,
DP_QUIRK_FORCE_DPCD_BACKLIGHT)) {
- DRM_DEV_INFO(dev->dev,
- "Panel advertises DPCD backlight support, but "
- "VBT disagrees. If your backlight controls "
- "don't work try booting with "
- "i915.enable_dpcd_backlight=1. If your machine "
- "needs this, please file a _new_ bug report on "
- "drm/i915, see " FDO_BUG_URL " for details.\n");
+ drm_info(&i915->drm,
+ "Panel advertises DPCD backlight support, but "
+ "VBT disagrees. If your backlight controls "
+ "don't work try booting with "
+ "i915.enable_dpcd_backlight=1. If your machine "
+ "needs this, please file a _new_ bug report on "
+ "drm/i915, see " FDO_BUG_URL " for details.\n");
return -ENODEV;
}
generated by cgit (git 2.34.1) at 2024-06-13 11:14:14 +0000