drm/nouveau: Fix backlight control on PPC machines with an internal TMDS panel.
This commit fixes fdo bug 29685. Reported-by: Vlado Plaga <rechner@vlado-do.de> Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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f5cb8ab154
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d31e078d84
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@ -3869,27 +3869,10 @@ static int call_lvds_manufacturer_script(struct drm_device *dev, struct dcb_entr
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}
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#ifdef __powerpc__
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/* Powerbook specific quirks */
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if ((dev->pci_device & 0xffff) == 0x0179 ||
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(dev->pci_device & 0xffff) == 0x0189 ||
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(dev->pci_device & 0xffff) == 0x0329) {
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if (script == LVDS_RESET) {
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if (script == LVDS_RESET &&
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(dev->pci_device == 0x0179 || dev->pci_device == 0x0189 ||
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dev->pci_device == 0x0329))
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nv_write_tmds(dev, dcbent->or, 0, 0x02, 0x72);
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} else if (script == LVDS_PANEL_ON) {
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bios_wr32(bios, NV_PBUS_DEBUG_DUALHEAD_CTL,
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bios_rd32(bios, NV_PBUS_DEBUG_DUALHEAD_CTL)
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| (1 << 31));
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bios_wr32(bios, NV_PCRTC_GPIO_EXT,
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bios_rd32(bios, NV_PCRTC_GPIO_EXT) | 1);
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} else if (script == LVDS_PANEL_OFF) {
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bios_wr32(bios, NV_PBUS_DEBUG_DUALHEAD_CTL,
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bios_rd32(bios, NV_PBUS_DEBUG_DUALHEAD_CTL)
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& ~(1 << 31));
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bios_wr32(bios, NV_PCRTC_GPIO_EXT,
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bios_rd32(bios, NV_PCRTC_GPIO_EXT) & ~3);
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}
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}
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#endif
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return 0;
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@ -475,6 +475,27 @@ static void nv04_dfp_commit(struct drm_encoder *encoder)
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nv_crtc->index, '@' + ffs(nv_encoder->dcb->or));
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}
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static void nv04_dfp_update_backlight(struct drm_encoder *encoder, int mode)
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{
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#ifdef __powerpc__
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struct drm_device *dev = encoder->dev;
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/* BIOS scripts usually take care of the backlight, thanks
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* Apple for your consistency.
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*/
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if (dev->pci_device == 0x0179 || dev->pci_device == 0x0189 ||
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dev->pci_device == 0x0329) {
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if (mode == DRM_MODE_DPMS_ON) {
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nv_mask(dev, NV_PBUS_DEBUG_DUALHEAD_CTL, 0, 1 << 31);
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nv_mask(dev, NV_PCRTC_GPIO_EXT, 3, 1);
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} else {
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nv_mask(dev, NV_PBUS_DEBUG_DUALHEAD_CTL, 1 << 31, 0);
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nv_mask(dev, NV_PCRTC_GPIO_EXT, 3, 0);
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}
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}
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#endif
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}
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static inline bool is_powersaving_dpms(int mode)
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{
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return (mode != DRM_MODE_DPMS_ON);
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@ -522,6 +543,7 @@ static void nv04_lvds_dpms(struct drm_encoder *encoder, int mode)
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LVDS_PANEL_OFF, 0);
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}
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nv04_dfp_update_backlight(encoder, mode);
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nv04_dfp_update_fp_control(encoder, mode);
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if (mode == DRM_MODE_DPMS_ON)
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@ -545,6 +567,7 @@ static void nv04_tmds_dpms(struct drm_encoder *encoder, int mode)
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NV_INFO(dev, "Setting dpms mode %d on tmds encoder (output %d)\n",
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mode, nv_encoder->dcb->index);
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nv04_dfp_update_backlight(encoder, mode);
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nv04_dfp_update_fp_control(encoder, mode);
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}
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