diff options
Diffstat (limited to 'sys/dev/drm2/i915/intel_panel.c')
-rw-r--r-- | sys/dev/drm2/i915/intel_panel.c | 245 |
1 files changed, 196 insertions, 49 deletions
diff --git a/sys/dev/drm2/i915/intel_panel.c b/sys/dev/drm2/i915/intel_panel.c index 2d4210d5cb09..f8226496be63 100644 --- a/sys/dev/drm2/i915/intel_panel.c +++ b/sys/dev/drm2/i915/intel_panel.c @@ -31,9 +31,9 @@ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <dev/drm2/drmP.h> -#include <dev/drm2/drm.h> -#include <dev/drm2/i915/i915_drm.h> #include <dev/drm2/i915/intel_drv.h> #define PCI_LBPC 0xf4 /* legacy/combination backlight modes */ @@ -95,7 +95,7 @@ intel_pch_panel_fitting(struct drm_device *dev, } else if (scaled_width < scaled_height) { /* letter */ height = scaled_width / mode->hdisplay; if (height & 1) - height++; + height++; y = (adjusted_mode->vdisplay - height + 1) / 2; x = 0; width = adjusted_mode->hdisplay; @@ -133,53 +133,45 @@ static int is_backlight_combination_mode(struct drm_device *dev) return 0; } -static u32 i915_read_blc_pwm_ctl(struct drm_i915_private *dev_priv) +static u32 i915_read_blc_pwm_ctl(struct drm_device *dev) { + struct drm_i915_private *dev_priv = dev->dev_private; u32 val; /* Restore the CTL value if it lost, e.g. GPU reset */ if (HAS_PCH_SPLIT(dev_priv->dev)) { val = I915_READ(BLC_PWM_PCH_CTL2); - if (dev_priv->saveBLC_PWM_CTL2 == 0) { - dev_priv->saveBLC_PWM_CTL2 = val; + if (dev_priv->regfile.saveBLC_PWM_CTL2 == 0) { + dev_priv->regfile.saveBLC_PWM_CTL2 = val; } else if (val == 0) { - I915_WRITE(BLC_PWM_PCH_CTL2, - dev_priv->saveBLC_PWM_CTL2); - val = dev_priv->saveBLC_PWM_CTL2; + val = dev_priv->regfile.saveBLC_PWM_CTL2; + I915_WRITE(BLC_PWM_PCH_CTL2, val); } } else { val = I915_READ(BLC_PWM_CTL); - if (dev_priv->saveBLC_PWM_CTL == 0) { - dev_priv->saveBLC_PWM_CTL = val; - dev_priv->saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_CTL2); + 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) { - I915_WRITE(BLC_PWM_CTL, - dev_priv->saveBLC_PWM_CTL); - I915_WRITE(BLC_PWM_CTL2, - dev_priv->saveBLC_PWM_CTL2); - val = dev_priv->saveBLC_PWM_CTL; + 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; } -u32 intel_panel_get_max_backlight(struct drm_device *dev) +static u32 _intel_panel_get_max_backlight(struct drm_device *dev) { - struct drm_i915_private *dev_priv = dev->dev_private; u32 max; - max = i915_read_blc_pwm_ctl(dev_priv); - if (max == 0) { - /* XXX add code here to query mode clock or hardware clock - * and program max PWM appropriately. - */ -#if 0 - printf("fixme: max PWM is zero.\n"); -#endif - return 1; - } + max = i915_read_blc_pwm_ctl(dev); if (HAS_PCH_SPLIT(dev)) { max >>= 16; @@ -193,10 +185,34 @@ u32 intel_panel_get_max_backlight(struct drm_device *dev) max *= 0xff; } - DRM_DEBUG("max backlight PWM = %d\n", max); return max; } +u32 intel_panel_get_max_backlight(struct drm_device *dev) +{ + u32 max; + + max = _intel_panel_get_max_backlight(dev); + if (max == 0) { + /* XXX add code here to query mode clock or hardware clock + * and program max PWM appropriately. + */ + pr_warn_once("fixme: max PWM is zero\n"); + return 1; + } + + DRM_DEBUG_DRIVER("max backlight PWM = %d\n", max); + return max; +} + +static int i915_panel_invert_brightness; +TUNABLE_INT("drm.i915.invert_brightness", &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) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -211,7 +227,7 @@ static u32 intel_panel_compute_brightness(struct drm_device *dev, u32 val) return val; } -u32 intel_panel_get_backlight(struct drm_device *dev) +static u32 intel_panel_get_backlight(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; u32 val; @@ -226,7 +242,7 @@ u32 intel_panel_get_backlight(struct drm_device *dev) if (is_backlight_combination_mode(dev)) { u8 lbpc; - lbpc = pci_read_config(dev->dev, PCI_LBPC, 1); + pci_read_config_byte(dev->dev, PCI_LBPC, &lbpc); val *= lbpc; } } @@ -260,11 +276,11 @@ static void intel_panel_actually_set_backlight(struct drm_device *dev, u32 level lbpc = level * 0xfe / max + 1; level /= lbpc; - pci_write_config(dev->dev, PCI_LBPC, lbpc, 4); + pci_write_config_byte(dev->dev, PCI_LBPC, lbpc); } tmp = I915_READ(BLC_PWM_CTL); - if (INTEL_INFO(dev)->gen < 4) + if (INTEL_INFO(dev)->gen < 4) level <<= 1; tmp &= ~BACKLIGHT_DUTY_CYCLE_MASK; I915_WRITE(BLC_PWM_CTL, tmp | level); @@ -285,15 +301,69 @@ void intel_panel_disable_backlight(struct drm_device *dev) dev_priv->backlight_enabled = false; intel_panel_actually_set_backlight(dev, 0); + + if (INTEL_INFO(dev)->gen >= 4) { + uint32_t reg, tmp; + + reg = HAS_PCH_SPLIT(dev) ? BLC_PWM_CPU_CTL2 : BLC_PWM_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); + } + } } -void intel_panel_enable_backlight(struct drm_device *dev) +void intel_panel_enable_backlight(struct drm_device *dev, + enum pipe pipe) { struct drm_i915_private *dev_priv = dev->dev_private; if (dev_priv->backlight_level == 0) dev_priv->backlight_level = intel_panel_get_max_backlight(dev); + if (INTEL_INFO(dev)->gen >= 4) { + uint32_t reg, tmp; + + reg = HAS_PCH_SPLIT(dev) ? BLC_PWM_CPU_CTL2 : BLC_PWM_CTL2; + + + tmp = I915_READ(reg); + + /* 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; + + if (dev_priv->num_pipe == 3) + tmp &= ~BLM_PIPE_SELECT_IVB; + else + tmp &= ~BLM_PIPE_SELECT; + + tmp |= BLM_PIPE(pipe); + tmp &= ~BLM_PWM_ENABLE; + + I915_WRITE(reg, tmp); + POSTING_READ(reg); + I915_WRITE(reg, tmp | BLM_PWM_ENABLE); + + if (HAS_PCH_SPLIT(dev)) { + tmp = I915_READ(BLC_PWM_PCH_CTL1); + tmp |= BLM_PCH_PWM_ENABLE; + tmp &= ~BLM_PCH_OVERRIDE_ENABLE; + I915_WRITE(BLC_PWM_PCH_CTL1, tmp); + } + } + +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); } @@ -309,31 +379,90 @@ static void intel_panel_init_backlight(struct drm_device *dev) enum drm_connector_status intel_panel_detect(struct drm_device *dev) { -#if 0 struct drm_i915_private *dev_priv = dev->dev_private; -#endif - - if (i915_panel_ignore_lid) - return i915_panel_ignore_lid > 0 ? - connector_status_connected : - connector_status_disconnected; - /* opregion lid state on HP 2540p is wrong at boot up, - * appears to be either the BIOS or Linux ACPI fault */ -#if 0 /* Assume that the BIOS does not lie through the OpRegion... */ - if (dev_priv->opregion.lid_state) + if (!i915_panel_ignore_lid && dev_priv->opregion.lid_state) { return ioread32(dev_priv->opregion.lid_state) & 0x1 ? connector_status_connected : connector_status_disconnected; -#endif + } - return connector_status_unknown; + switch (i915_panel_ignore_lid) { + case -2: + return connector_status_connected; + case -1: + return connector_status_disconnected; + default: + return connector_status_unknown; + } } -int intel_panel_setup_backlight(struct drm_device *dev) +#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE +static int intel_panel_update_status(struct backlight_device *bd) { + struct drm_device *dev = bl_get_data(bd); + intel_panel_set_backlight(dev, bd->props.brightness); + return 0; +} + +static int intel_panel_get_brightness(struct backlight_device *bd) +{ + struct drm_device *dev = bl_get_data(bd); + struct drm_i915_private *dev_priv = dev->dev_private; + return dev_priv->backlight_level; +} + +static const struct backlight_ops intel_panel_bl_ops = { + .update_status = intel_panel_update_status, + .get_brightness = intel_panel_get_brightness, +}; + +int intel_panel_setup_backlight(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct backlight_properties props; + intel_panel_init_backlight(dev); + + if (WARN_ON(dev_priv->backlight)) + return -ENODEV; + + memset(&props, 0, sizeof(props)); + props.type = BACKLIGHT_RAW; + props.max_brightness = _intel_panel_get_max_backlight(dev); + if (props.max_brightness == 0) { + DRM_DEBUG_DRIVER("Failed to get maximum backlight value\n"); + return -ENODEV; + } + dev_priv->backlight = + backlight_device_register("intel_backlight", + &connector->kdev, dev, + &intel_panel_bl_ops, &props); + + if (IS_ERR(dev_priv->backlight)) { + DRM_ERROR("Failed to register backlight: %ld\n", + PTR_ERR(dev_priv->backlight)); + dev_priv->backlight = NULL; + return -ENODEV; + } + dev_priv->backlight->props.brightness = intel_panel_get_backlight(dev); + return 0; +} + +void intel_panel_destroy_backlight(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + if (dev_priv->backlight) { + backlight_device_unregister(dev_priv->backlight); + dev_priv->backlight = NULL; + } +} +#else +int intel_panel_setup_backlight(struct drm_connector *connector) +{ + intel_panel_init_backlight(connector->dev); return 0; } @@ -341,3 +470,21 @@ void intel_panel_destroy_backlight(struct drm_device *dev) { return; } +#endif + +int intel_panel_init(struct intel_panel *panel, + struct drm_display_mode *fixed_mode) +{ + panel->fixed_mode = fixed_mode; + + return 0; +} + +void intel_panel_fini(struct intel_panel *panel) +{ + struct intel_connector *intel_connector = + container_of(panel, struct intel_connector, panel); + + if (panel->fixed_mode) + drm_mode_destroy(intel_connector->base.dev, panel->fixed_mode); +} |