From: Francisco Jerez Date: Tue, 20 Jul 2010 01:08:25 +0000 (+0200) Subject: drm/nouveau: No need to lock/unlock the VGA CRTC regs all the time. X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=03cd06ca9046190e8418749c2c8f636e2625556c;p=linux-beck.git drm/nouveau: No need to lock/unlock the VGA CRTC regs all the time. Locking only makes sense in the VBIOS parsing code as it's executed before CRTC init. Signed-off-by: Francisco Jerez Signed-off-by: Ben Skeggs --- diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c index 665f0d64f2c6..3b5523eff43a 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bios.c +++ b/drivers/gpu/drm/nouveau/nouveau_bios.c @@ -6607,7 +6607,6 @@ static bool nouveau_bios_posted(struct drm_device *dev) { struct drm_nouveau_private *dev_priv = dev->dev_private; - bool was_locked; unsigned htotal; if (dev_priv->chipset >= NV_50) { @@ -6617,13 +6616,14 @@ nouveau_bios_posted(struct drm_device *dev) return true; } - was_locked = NVLockVgaCrtcs(dev, false); + NVLockVgaCrtcs(dev, false); htotal = NVReadVgaCrtc(dev, 0, 0x06); htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x01) << 8; htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x20) << 4; htotal |= (NVReadVgaCrtc(dev, 0, 0x25) & 0x01) << 10; htotal |= (NVReadVgaCrtc(dev, 0, 0x41) & 0x01) << 11; - NVLockVgaCrtcs(dev, was_locked); + NVLockVgaCrtcs(dev, true); + return (htotal != 0); } @@ -6632,7 +6632,6 @@ nouveau_bios_init(struct drm_device *dev) { struct drm_nouveau_private *dev_priv = dev->dev_private; struct nvbios *bios = &dev_priv->vbios; - bool was_locked; int ret; if (!NVInitVBIOS(dev)) @@ -6667,14 +6666,14 @@ nouveau_bios_init(struct drm_device *dev) return ret; /* feature_byte on BMP is poor, but init always sets CR4B */ - was_locked = NVLockVgaCrtcs(dev, false); + NVLockVgaCrtcs(dev, false); if (bios->major_version < 5) bios->is_mobile = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_4B) & 0x40; /* all BIT systems need p_f_m_t for digital_min_front_porch */ if (bios->is_mobile || bios->major_version >= 5) ret = parse_fp_mode_table(dev, bios); - NVLockVgaCrtcs(dev, was_locked); + NVLockVgaCrtcs(dev, true); /* allow subsequent scripts to execute */ bios->execute = true; diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c index 27df0063131e..734e92635e83 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -102,44 +102,12 @@ nouveau_connector_destroy(struct drm_connector *drm_connector) kfree(drm_connector); } -static void -nouveau_connector_ddc_prepare(struct drm_connector *connector, int *flags) -{ - struct drm_nouveau_private *dev_priv = connector->dev->dev_private; - - if (dev_priv->card_type >= NV_50) - return; - - *flags = 0; - if (NVLockVgaCrtcs(dev_priv->dev, false)) - *flags |= 1; - if (nv_heads_tied(dev_priv->dev)) - *flags |= 2; - - if (*flags & 2) - NVSetOwner(dev_priv->dev, 0); /* necessary? */ -} - -static void -nouveau_connector_ddc_finish(struct drm_connector *connector, int flags) -{ - struct drm_nouveau_private *dev_priv = connector->dev->dev_private; - - if (dev_priv->card_type >= NV_50) - return; - - if (flags & 2) - NVSetOwner(dev_priv->dev, 4); - if (flags & 1) - NVLockVgaCrtcs(dev_priv->dev, true); -} - static struct nouveau_i2c_chan * nouveau_connector_ddc_detect(struct drm_connector *connector, struct nouveau_encoder **pnv_encoder) { struct drm_device *dev = connector->dev; - int ret, flags, i; + int i; for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { struct nouveau_i2c_chan *i2c; @@ -155,17 +123,9 @@ nouveau_connector_ddc_detect(struct drm_connector *connector, if (!obj) continue; nv_encoder = nouveau_encoder(obj_to_encoder(obj)); + i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index); - if (nv_encoder->dcb->i2c_index < 0xf) - i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index); - if (!i2c) - continue; - - nouveau_connector_ddc_prepare(connector, &flags); - ret = nouveau_probe_i2c_addr(i2c, 0x50); - nouveau_connector_ddc_finish(connector, flags); - - if (ret) { + if (i2c && nouveau_probe_i2c_addr(i2c, 0x50)) { *pnv_encoder = nv_encoder; return i2c; } @@ -218,7 +178,7 @@ nouveau_connector_detect(struct drm_connector *connector) struct nouveau_connector *nv_connector = nouveau_connector(connector); struct nouveau_encoder *nv_encoder = NULL; struct nouveau_i2c_chan *i2c; - int type, flags; + int type; /* Cleanup the previous EDID block. */ if (nv_connector->edid) { @@ -229,9 +189,7 @@ nouveau_connector_detect(struct drm_connector *connector) i2c = nouveau_connector_ddc_detect(connector, &nv_encoder); if (i2c) { - nouveau_connector_ddc_prepare(connector, &flags); nv_connector->edid = drm_get_edid(connector, &i2c->adapter); - nouveau_connector_ddc_finish(connector, flags); drm_mode_connector_update_edid_property(connector, nv_connector->edid); if (!nv_connector->edid) { diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c index 6c8cd38fd116..e93fbcc56da5 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drv.c +++ b/drivers/gpu/drm/nouveau/nouveau_drv.c @@ -321,10 +321,9 @@ nouveau_pci_resume(struct pci_dev *pdev) NV_ERROR(dev, "Could not pin/map cursor.\n"); } - if (dev_priv->card_type < NV_50) { + if (dev_priv->card_type < NV_50) nv04_display_restore(dev); - NVLockVgaCrtcs(dev, false); - } else + else nv50_display_init(dev); list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { diff --git a/drivers/gpu/drm/nouveau/nv04_display.c b/drivers/gpu/drm/nouveau/nv04_display.c index 93200da8f2d3..c6df391ebb2e 100644 --- a/drivers/gpu/drm/nouveau/nv04_display.c +++ b/drivers/gpu/drm/nouveau/nv04_display.c @@ -32,8 +32,6 @@ #include "nouveau_encoder.h" #include "nouveau_connector.h" -#define MULTIPLE_ENCODERS(e) (e & (e - 1)) - static void nv04_display_store_initial_head_owner(struct drm_device *dev) { @@ -41,7 +39,7 @@ nv04_display_store_initial_head_owner(struct drm_device *dev) if (dev_priv->chipset != 0x11) { dev_priv->crtc_owner = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_44); - goto ownerknown; + return; } /* reading CR44 is broken on nv11, so we attempt to infer it */ @@ -52,8 +50,6 @@ nv04_display_store_initial_head_owner(struct drm_device *dev) bool tvA = false; bool tvB = false; - NVLockVgaCrtcs(dev, false); - slaved_on_B = NVReadVgaCrtc(dev, 1, NV_CIO_CRE_PIXEL_INDEX) & 0x80; if (slaved_on_B) @@ -66,8 +62,6 @@ nv04_display_store_initial_head_owner(struct drm_device *dev) tvA = !(NVReadVgaCrtc(dev, 0, NV_CIO_CRE_LCD__INDEX) & MASK(NV_CIO_CRE_LCD_LCD_SELECT)); - NVLockVgaCrtcs(dev, true); - if (slaved_on_A && !tvA) dev_priv->crtc_owner = 0x0; else if (slaved_on_B && !tvB) @@ -79,12 +73,6 @@ nv04_display_store_initial_head_owner(struct drm_device *dev) else dev_priv->crtc_owner = 0x0; } - -ownerknown: - /* we need to ensure the heads are not tied henceforth, or reading any - * 8 bit reg on head B will fail - * setting a single arbitrary head solves that */ - NVSetOwner(dev, 0); } int @@ -99,8 +87,13 @@ nv04_display_create(struct drm_device *dev) NV_DEBUG_KMS(dev, "\n"); - if (nv_two_heads(dev)) + NVLockVgaCrtcs(dev, false); + + if (nv_two_heads(dev)) { nv04_display_store_initial_head_owner(dev); + NVSetOwner(dev, 0); + } + nouveau_hw_save_vga_fonts(dev, 1); drm_mode_config_init(dev); @@ -168,8 +161,6 @@ nv04_display_create(struct drm_device *dev) } /* Save previous state */ - NVLockVgaCrtcs(dev, false); - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) crtc->funcs->save(crtc); @@ -185,6 +176,7 @@ nv04_display_create(struct drm_device *dev) void nv04_display_destroy(struct drm_device *dev) { + struct drm_nouveau_private *dev_priv = dev->dev_private; struct drm_encoder *encoder; struct drm_crtc *crtc; @@ -200,8 +192,6 @@ nv04_display_destroy(struct drm_device *dev) } /* Restore state */ - NVLockVgaCrtcs(dev, false); - list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { struct drm_encoder_helper_funcs *func = encoder->helper_private; @@ -214,12 +204,15 @@ nv04_display_destroy(struct drm_device *dev) drm_mode_config_cleanup(dev); nouveau_hw_save_vga_fonts(dev, 0); + + if (nv_two_heads(dev)) + NVSetOwner(dev, dev_priv->crtc_owner); + NVLockVgaCrtcs(dev, true); } void nv04_display_restore(struct drm_device *dev) { - struct drm_nouveau_private *dev_priv = dev->dev_private; struct drm_encoder *encoder; struct drm_crtc *crtc; @@ -241,10 +234,5 @@ nv04_display_restore(struct drm_device *dev) list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) crtc->funcs->restore(crtc); - - if (nv_two_heads(dev)) - NVSetOwner(dev, dev_priv->crtc_owner); - - NVLockVgaCrtcs(dev, true); } diff --git a/drivers/gpu/drm/nouveau/nv04_tv.c b/drivers/gpu/drm/nouveau/nv04_tv.c index 8de1eef3594a..94e299cef0b2 100644 --- a/drivers/gpu/drm/nouveau/nv04_tv.c +++ b/drivers/gpu/drm/nouveau/nv04_tv.c @@ -194,7 +194,6 @@ nv04_tv_create(struct drm_connector *connector, struct dcb_entry *entry) struct nouveau_i2c_chan *i2c = nouveau_i2c_find(dev, entry->i2c_index); int type, ret; - bool was_locked; /* Ensure that we can talk to this encoder */ type = nv04_tv_identify(dev, entry->i2c_index); @@ -224,13 +223,8 @@ nv04_tv_create(struct drm_connector *connector, struct dcb_entry *entry) nv_encoder->or = ffs(entry->or) - 1; /* Run the slave-specific initialization */ - was_locked = NVLockVgaCrtcs(dev, false); - ret = drm_i2c_encoder_init(dev, to_encoder_slave(encoder), &i2c->adapter, &nv04_tv_encoder_info[type]); - - NVLockVgaCrtcs(dev, was_locked); - if (ret < 0) goto fail_cleanup;