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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-28 16:54:23 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-28 16:54:23 +0400 |
commit | 37be944a0270402f9cda291a930b0286f6dc92f5 (patch) | |
tree | 6a91a9eb86450f4a18a8871f04a1ef810e7b55d6 /drivers/gpu/drm/nouveau/nouveau_backlight.c | |
parent | ca836a25435ef1b9914840ed0a310c9b6ac261d1 (diff) | |
parent | 1717c0e23f411147490c7a3312b894f0ea9a5fb1 (diff) | |
download | linux-37be944a0270402f9cda291a930b0286f6dc92f5.tar.xz |
Merge branch 'drm-core-next' of git://people.freedesktop.org/~airlied/linux
* 'drm-core-next' of git://people.freedesktop.org/~airlied/linux: (290 commits)
Revert "drm/ttm: add a way to bo_wait for either the last read or last write"
Revert "drm/radeon/kms: add a new gem_wait ioctl with read/write flags"
vmwgfx: Don't pass unused arguments to do_dirty functions
vmwgfx: Emulate depth 32 framebuffers
drm/radeon: Lower the severity of the radeon lockup messages.
drm/i915/dp: Fix eDP on PCH DP on CPT/PPT
drm/i915/dp: Introduce is_cpu_edp()
drm/i915: use correct SPD type value
drm/i915: fix ILK+ infoframe support
drm/i915: add DP test request handling
drm/i915: read full receiver capability field during DP hot plug
drm/i915/dp: Remove eDP special cases from bandwidth checks
drm/i915/dp: Fix the math in intel_dp_link_required
drm/i915/panel: Always record the backlight level again (but cleverly)
i915: Move i915_read/write out of line
drm/i915: remove transcoder PLL mashing from mode_set per specs
drm/i915: if transcoder disable fails, say which
drm/i915: set watermarks for third pipe on IVB
drm/i915: export a CPT mode set verification function
drm/i915: fix transcoder PLL select masking
...
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_backlight.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_backlight.c | 169 |
1 files changed, 126 insertions, 43 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c index 00a55dfdba82..fa22b28e8777 100644 --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c @@ -37,8 +37,10 @@ #include "nouveau_drv.h" #include "nouveau_drm.h" #include "nouveau_reg.h" +#include "nouveau_encoder.h" -static int nv40_get_intensity(struct backlight_device *bd) +static int +nv40_get_intensity(struct backlight_device *bd) { struct drm_device *dev = bl_get_data(bd); int val = (nv_rd32(dev, NV40_PMC_BACKLIGHT) & NV40_PMC_BACKLIGHT_MASK) @@ -47,7 +49,8 @@ static int nv40_get_intensity(struct backlight_device *bd) return val; } -static int nv40_set_intensity(struct backlight_device *bd) +static int +nv40_set_intensity(struct backlight_device *bd) { struct drm_device *dev = bl_get_data(bd); int val = bd->props.brightness; @@ -65,30 +68,8 @@ static const struct backlight_ops nv40_bl_ops = { .update_status = nv40_set_intensity, }; -static int nv50_get_intensity(struct backlight_device *bd) -{ - struct drm_device *dev = bl_get_data(bd); - - return nv_rd32(dev, NV50_PDISPLAY_SOR_BACKLIGHT); -} - -static int nv50_set_intensity(struct backlight_device *bd) -{ - struct drm_device *dev = bl_get_data(bd); - int val = bd->props.brightness; - - nv_wr32(dev, NV50_PDISPLAY_SOR_BACKLIGHT, - val | NV50_PDISPLAY_SOR_BACKLIGHT_ENABLE); - return 0; -} - -static const struct backlight_ops nv50_bl_ops = { - .options = BL_CORE_SUSPENDRESUME, - .get_brightness = nv50_get_intensity, - .update_status = nv50_set_intensity, -}; - -static int nouveau_nv40_backlight_init(struct drm_connector *connector) +static int +nv40_backlight_init(struct drm_connector *connector) { struct drm_device *dev = connector->dev; struct drm_nouveau_private *dev_priv = dev->dev_private; @@ -113,34 +94,129 @@ static int nouveau_nv40_backlight_init(struct drm_connector *connector) return 0; } -static int nouveau_nv50_backlight_init(struct drm_connector *connector) +static int +nv50_get_intensity(struct backlight_device *bd) +{ + struct nouveau_encoder *nv_encoder = bl_get_data(bd); + struct drm_device *dev = nv_encoder->base.base.dev; + int or = nv_encoder->or; + u32 div = 1025; + u32 val; + + val = nv_rd32(dev, NV50_PDISP_SOR_PWM_CTL(or)); + val &= NV50_PDISP_SOR_PWM_CTL_VAL; + return ((val * 100) + (div / 2)) / div; +} + +static int +nv50_set_intensity(struct backlight_device *bd) +{ + struct nouveau_encoder *nv_encoder = bl_get_data(bd); + struct drm_device *dev = nv_encoder->base.base.dev; + int or = nv_encoder->or; + u32 div = 1025; + u32 val = (bd->props.brightness * div) / 100; + + nv_wr32(dev, NV50_PDISP_SOR_PWM_CTL(or), + NV50_PDISP_SOR_PWM_CTL_NEW | val); + return 0; +} + +static const struct backlight_ops nv50_bl_ops = { + .options = BL_CORE_SUSPENDRESUME, + .get_brightness = nv50_get_intensity, + .update_status = nv50_set_intensity, +}; + +static int +nva3_get_intensity(struct backlight_device *bd) +{ + struct nouveau_encoder *nv_encoder = bl_get_data(bd); + struct drm_device *dev = nv_encoder->base.base.dev; + int or = nv_encoder->or; + u32 div, val; + + div = nv_rd32(dev, NV50_PDISP_SOR_PWM_DIV(or)); + val = nv_rd32(dev, NV50_PDISP_SOR_PWM_CTL(or)); + val &= NVA3_PDISP_SOR_PWM_CTL_VAL; + if (div && div >= val) + return ((val * 100) + (div / 2)) / div; + + return 100; +} + +static int +nva3_set_intensity(struct backlight_device *bd) +{ + struct nouveau_encoder *nv_encoder = bl_get_data(bd); + struct drm_device *dev = nv_encoder->base.base.dev; + int or = nv_encoder->or; + u32 div, val; + + div = nv_rd32(dev, NV50_PDISP_SOR_PWM_DIV(or)); + val = (bd->props.brightness * div) / 100; + if (div) { + nv_wr32(dev, NV50_PDISP_SOR_PWM_CTL(or), val | + NV50_PDISP_SOR_PWM_CTL_NEW | + NVA3_PDISP_SOR_PWM_CTL_UNK); + return 0; + } + + return -EINVAL; +} + +static const struct backlight_ops nva3_bl_ops = { + .options = BL_CORE_SUSPENDRESUME, + .get_brightness = nva3_get_intensity, + .update_status = nva3_set_intensity, +}; + +static int +nv50_backlight_init(struct drm_connector *connector) { struct drm_device *dev = connector->dev; struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_encoder *nv_encoder; struct backlight_properties props; struct backlight_device *bd; + const struct backlight_ops *ops; + + nv_encoder = find_encoder(connector, OUTPUT_LVDS); + if (!nv_encoder) { + nv_encoder = find_encoder(connector, OUTPUT_DP); + if (!nv_encoder) + return -ENODEV; + } - if (!nv_rd32(dev, NV50_PDISPLAY_SOR_BACKLIGHT)) + if (!nv_rd32(dev, NV50_PDISP_SOR_PWM_CTL(nv_encoder->or))) return 0; + if (dev_priv->chipset <= 0xa0 || + dev_priv->chipset == 0xaa || + dev_priv->chipset == 0xac) + ops = &nv50_bl_ops; + else + ops = &nva3_bl_ops; + memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; - props.max_brightness = 1025; - bd = backlight_device_register("nv_backlight", &connector->kdev, dev, - &nv50_bl_ops, &props); + props.max_brightness = 100; + bd = backlight_device_register("nv_backlight", &connector->kdev, + nv_encoder, ops, &props); if (IS_ERR(bd)) return PTR_ERR(bd); dev_priv->backlight = bd; - bd->props.brightness = nv50_get_intensity(bd); + bd->props.brightness = bd->ops->get_brightness(bd); backlight_update_status(bd); return 0; } -int nouveau_backlight_init(struct drm_connector *connector) +int +nouveau_backlight_init(struct drm_device *dev) { - struct drm_device *dev = connector->dev; struct drm_nouveau_private *dev_priv = dev->dev_private; + struct drm_connector *connector; #ifdef CONFIG_ACPI if (acpi_video_backlight_support()) { @@ -150,21 +226,28 @@ int nouveau_backlight_init(struct drm_connector *connector) } #endif - switch (dev_priv->card_type) { - case NV_40: - return nouveau_nv40_backlight_init(connector); - case NV_50: - return nouveau_nv50_backlight_init(connector); - default: - break; + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS && + connector->connector_type != DRM_MODE_CONNECTOR_eDP) + continue; + + switch (dev_priv->card_type) { + case NV_40: + return nv40_backlight_init(connector); + case NV_50: + return nv50_backlight_init(connector); + default: + break; + } } + return 0; } -void nouveau_backlight_exit(struct drm_connector *connector) +void +nouveau_backlight_exit(struct drm_device *dev) { - struct drm_device *dev = connector->dev; struct drm_nouveau_private *dev_priv = dev->dev_private; if (dev_priv->backlight) { |