diff options
Diffstat (limited to 'linux-core/nv50_sor.c')
| -rw-r--r-- | linux-core/nv50_sor.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/linux-core/nv50_sor.c b/linux-core/nv50_sor.c new file mode 100644 index 00000000..430c1e83 --- /dev/null +++ b/linux-core/nv50_sor.c @@ -0,0 +1,204 @@ +/* + * Copyright (C) 2008 Maarten Maathuis. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial + * portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#include "nv50_output.h" + +static int nv50_sor_validate_mode(struct nv50_output *output, struct nouveau_hw_mode *mode) +{ + NV50_DEBUG("\n"); + + if (mode->clock > 165000) /* no dual link until we figure it out completely */ + return MODE_CLOCK_HIGH; + + if (mode->clock < 25000) + return MODE_CLOCK_LOW; + + if (output->native_mode->hdisplay > 0 && output->native_mode->vdisplay > 0) { + if (mode->hdisplay > output->native_mode->hdisplay || mode->vdisplay > output->native_mode->vdisplay) + return MODE_PANEL; + } + + return MODE_OK; +} + +static int nv50_sor_execute_mode(struct nv50_output *output, bool disconnect) +{ + struct drm_nouveau_private *dev_priv = output->dev->dev_private; + struct nv50_crtc *crtc = output->crtc; + struct nouveau_hw_mode *desired_mode = NULL; + + uint32_t offset = nv50_output_or_offset(output) * 0x40; + + uint32_t mode_ctl = NV50_SOR_MODE_CTRL_OFF; + + NV50_DEBUG("or %d\n", nv50_output_or_offset(output)); + + if (disconnect) { + NV50_DEBUG("Disconnecting SOR\n"); + OUT_MODE(NV50_SOR0_MODE_CTRL + offset, mode_ctl); + return 0; + } + + desired_mode = (crtc->use_native_mode ? crtc->native_mode : crtc->mode); + + if (output->type == OUTPUT_LVDS) { + mode_ctl |= NV50_SOR_MODE_CTRL_LVDS; + } else { + mode_ctl |= NV50_SOR_MODE_CTRL_TMDS; + if (desired_mode->clock > 165000) + mode_ctl |= NV50_SOR_MODE_CTRL_TMDS_DUAL_LINK; + } + + if (crtc->index == 1) + mode_ctl |= NV50_SOR_MODE_CTRL_CRTC1; + else + mode_ctl |= NV50_SOR_MODE_CTRL_CRTC0; + + if (desired_mode->flags & V_NHSYNC) + mode_ctl |= NV50_SOR_MODE_CTRL_NHSYNC; + + if (desired_mode->flags & V_NVSYNC) + mode_ctl |= NV50_SOR_MODE_CTRL_NVSYNC; + + /* TODO: DPMS ?????? */ + + OUT_MODE(NV50_SOR0_MODE_CTRL + offset, mode_ctl); + + return 0; +} + +static int nv50_sor_set_clock_mode(struct nv50_output *output) +{ + struct drm_nouveau_private *dev_priv = output->dev->dev_private; + struct nv50_crtc *crtc = output->crtc; + + uint32_t limit = 165000; + struct nouveau_hw_mode *hw_mode; + + NV50_DEBUG("or %d\n", nv50_output_or_offset(output)); + + if (crtc->use_native_mode) + hw_mode = crtc->native_mode; + else + hw_mode = crtc->mode; + + /* 0x70000 was a late addition to nv, mentioned as fixing tmds initialisation on certain gpu's. */ + /* I presume it's some kind of clock setting, but what precisely i do not know. */ + NV_WRITE(NV50_PDISPLAY_SOR_CLK_CLK_CTRL2(nv50_output_or_offset(output)), 0x70000 | ((hw_mode->clock > limit) ? 0x101 : 0)); + + return 0; +} + +static int nv50_sor_destroy(struct nv50_output *output) +{ + struct drm_device *dev = output->dev; + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv50_display *display = nv50_get_display(dev); + + NV50_DEBUG("\n"); + + if (!display || !output) + return -EINVAL; + + list_del(&output->head); + + kfree(output->native_mode); + if (dev_priv->free_output) + dev_priv->free_output(output); + + return 0; +} + +int nv50_sor_create(struct drm_device *dev, int dcb_entry) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv50_output *output = NULL; + struct nv50_display *display = NULL; + struct dcb_entry *entry = NULL; + + NV50_DEBUG("\n"); + + /* This allows the public layer to do it's thing. */ + if (dev_priv->alloc_output) + output = dev_priv->alloc_output(dev); + + if (!output) + return -ENOMEM; + + output->dev = dev; + + display = nv50_get_display(dev); + if (!display) + goto out; + + entry = &dev_priv->dcb_table.entry[dcb_entry]; + if (!entry) + goto out; + + switch (entry->type) { + case DCB_OUTPUT_TMDS: + output->type = OUTPUT_TMDS; + DRM_INFO("Detected a TMDS output\n"); + break; + case DCB_OUTPUT_LVDS: + output->type = OUTPUT_LVDS; + DRM_INFO("Detected a LVDS output\n"); + break; + default: + goto out; + } + + output->dcb_entry = dcb_entry; + output->bus = entry->bus; + + list_add_tail(&output->head, &display->outputs); + + output->native_mode = kzalloc(sizeof(struct nouveau_hw_mode), GFP_KERNEL); + + /* Set function pointers. */ + output->validate_mode = nv50_sor_validate_mode; + output->execute_mode = nv50_sor_execute_mode; + output->set_clock_mode = nv50_sor_set_clock_mode; + output->detect = NULL; + output->destroy = nv50_sor_destroy; + + /* Some default state, unknown what it precisely means. */ + if (output->type == OUTPUT_TMDS) { + NV_WRITE(NV50_PDISPLAY_SOR_REGS_UNK_00C(nv50_output_or_offset(output)), 0x03010700); + NV_WRITE(NV50_PDISPLAY_SOR_REGS_UNK_010(nv50_output_or_offset(output)), 0x0000152f); + NV_WRITE(NV50_PDISPLAY_SOR_REGS_UNK_014(nv50_output_or_offset(output)), 0x00000000); + NV_WRITE(NV50_PDISPLAY_SOR_REGS_UNK_018(nv50_output_or_offset(output)), 0x00245af8); + } + + return 0; + +out: + if (output->native_mode) + kfree(output->native_mode); + if (dev_priv->free_output) + dev_priv->free_output(output); + return -EINVAL; +} |