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path: root/drivers/gpu/drm/nouveau/nv50_dac.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_dac.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv50_dac.c304
1 files changed, 304 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_dac.c b/drivers/gpu/drm/nouveau/nv50_dac.c
new file mode 100644
index 000000000000..fb5838e3be24
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nv50_dac.c
@@ -0,0 +1,304 @@
+/*
+ * 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 "drmP.h"
+#include "drm_crtc_helper.h"
+
+#define NOUVEAU_DMA_DEBUG (nouveau_reg_debug & NOUVEAU_REG_DEBUG_EVO)
+#include "nouveau_reg.h"
+#include "nouveau_drv.h"
+#include "nouveau_dma.h"
+#include "nouveau_encoder.h"
+#include "nouveau_connector.h"
+#include "nouveau_crtc.h"
+#include "nv50_display.h"
+
+static void
+nv50_dac_disconnect(struct nouveau_encoder *nv_encoder)
+{
+ struct drm_device *dev = to_drm_encoder(nv_encoder)->dev;
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_channel *evo = dev_priv->evo;
+ int ret;
+
+ NV_DEBUG(dev, "Disconnecting DAC %d\n", nv_encoder->or);
+
+ ret = RING_SPACE(evo, 2);
+ if (ret) {
+ NV_ERROR(dev, "no space while disconnecting DAC\n");
+ return;
+ }
+ BEGIN_RING(evo, 0, NV50_EVO_DAC(nv_encoder->or, MODE_CTRL), 1);
+ OUT_RING(evo, 0);
+}
+
+static enum drm_connector_status
+nv50_dac_detect(struct drm_encoder *encoder, struct drm_connector *connector)
+{
+ struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
+ struct drm_device *dev = encoder->dev;
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ enum drm_connector_status status = connector_status_disconnected;
+ uint32_t dpms_state, load_pattern, load_state;
+ int or = nv_encoder->or;
+
+ nv_wr32(dev, NV50_PDISPLAY_DAC_CLK_CTRL1(or), 0x00000001);
+ dpms_state = nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or));
+
+ nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or),
+ 0x00150000 | NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
+ if (!nv_wait(NV50_PDISPLAY_DAC_DPMS_CTRL(or),
+ NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING, 0)) {
+ NV_ERROR(dev, "timeout: DAC_DPMS_CTRL_PENDING(%d) == 0\n", or);
+ NV_ERROR(dev, "DAC_DPMS_CTRL(%d) = 0x%08x\n", or,
+ nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or)));
+ return status;
+ }
+
+ /* Use bios provided value if possible. */
+ if (dev_priv->vbios->dactestval) {
+ load_pattern = dev_priv->vbios->dactestval;
+ NV_DEBUG(dev, "Using bios provided load_pattern of %d\n",
+ load_pattern);
+ } else {
+ load_pattern = 340;
+ NV_DEBUG(dev, "Using default load_pattern of %d\n",
+ load_pattern);
+ }
+
+ nv_wr32(dev, NV50_PDISPLAY_DAC_LOAD_CTRL(or),
+ NV50_PDISPLAY_DAC_LOAD_CTRL_ACTIVE | load_pattern);
+ mdelay(45); /* give it some time to process */
+ load_state = nv_rd32(dev, NV50_PDISPLAY_DAC_LOAD_CTRL(or));
+
+ nv_wr32(dev, NV50_PDISPLAY_DAC_LOAD_CTRL(or), 0);
+ nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or), dpms_state |
+ NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
+
+ if ((load_state & NV50_PDISPLAY_DAC_LOAD_CTRL_PRESENT) ==
+ NV50_PDISPLAY_DAC_LOAD_CTRL_PRESENT)
+ status = connector_status_connected;
+
+ if (status == connector_status_connected)
+ NV_DEBUG(dev, "Load was detected on output with or %d\n", or);
+ else
+ NV_DEBUG(dev, "Load was not detected on output with or %d\n", or);
+
+ return status;
+}
+
+static void
+nv50_dac_dpms(struct drm_encoder *encoder, int mode)
+{
+ struct drm_device *dev = encoder->dev;
+ struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
+ uint32_t val;
+ int or = nv_encoder->or;
+
+ NV_DEBUG(dev, "or %d mode %d\n", or, mode);
+
+ /* wait for it to be done */
+ if (!nv_wait(NV50_PDISPLAY_DAC_DPMS_CTRL(or),
+ NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING, 0)) {
+ NV_ERROR(dev, "timeout: DAC_DPMS_CTRL_PENDING(%d) == 0\n", or);
+ NV_ERROR(dev, "DAC_DPMS_CTRL(%d) = 0x%08x\n", or,
+ nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or)));
+ return;
+ }
+
+ val = nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or)) & ~0x7F;
+
+ if (mode != DRM_MODE_DPMS_ON)
+ val |= NV50_PDISPLAY_DAC_DPMS_CTRL_BLANKED;
+
+ switch (mode) {
+ case DRM_MODE_DPMS_STANDBY:
+ val |= NV50_PDISPLAY_DAC_DPMS_CTRL_HSYNC_OFF;
+ break;
+ case DRM_MODE_DPMS_SUSPEND:
+ val |= NV50_PDISPLAY_DAC_DPMS_CTRL_VSYNC_OFF;
+ break;
+ case DRM_MODE_DPMS_OFF:
+ val |= NV50_PDISPLAY_DAC_DPMS_CTRL_OFF;
+ val |= NV50_PDISPLAY_DAC_DPMS_CTRL_HSYNC_OFF;
+ val |= NV50_PDISPLAY_DAC_DPMS_CTRL_VSYNC_OFF;
+ break;
+ default:
+ break;
+ }
+
+ nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or), val |
+ NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
+}
+
+static void
+nv50_dac_save(struct drm_encoder *encoder)
+{
+ NV_ERROR(encoder->dev, "!!\n");
+}
+
+static void
+nv50_dac_restore(struct drm_encoder *encoder)
+{
+ NV_ERROR(encoder->dev, "!!\n");
+}
+
+static bool
+nv50_dac_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
+ struct nouveau_connector *connector;
+
+ NV_DEBUG(encoder->dev, "or %d\n", nv_encoder->or);
+
+ connector = nouveau_encoder_connector_get(nv_encoder);
+ if (!connector) {
+ NV_ERROR(encoder->dev, "Encoder has no connector\n");
+ return false;
+ }
+
+ if (connector->scaling_mode != DRM_MODE_SCALE_NONE &&
+ connector->native_mode) {
+ int id = adjusted_mode->base.id;
+ *adjusted_mode = *connector->native_mode;
+ adjusted_mode->base.id = id;
+ }
+
+ return true;
+}
+
+static void
+nv50_dac_prepare(struct drm_encoder *encoder)
+{
+}
+
+static void
+nv50_dac_commit(struct drm_encoder *encoder)
+{
+}
+
+static void
+nv50_dac_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
+ struct drm_device *dev = encoder->dev;
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_channel *evo = dev_priv->evo;
+ struct nouveau_crtc *crtc = nouveau_crtc(encoder->crtc);
+ uint32_t mode_ctl = 0, mode_ctl2 = 0;
+ int ret;
+
+ NV_DEBUG(dev, "or %d\n", nv_encoder->or);
+
+ nv50_dac_dpms(encoder, DRM_MODE_DPMS_ON);
+
+ if (crtc->index == 1)
+ mode_ctl |= NV50_EVO_DAC_MODE_CTRL_CRTC1;
+ else
+ mode_ctl |= NV50_EVO_DAC_MODE_CTRL_CRTC0;
+
+ /* Lacking a working tv-out, this is not a 100% sure. */
+ if (nv_encoder->dcb->type == OUTPUT_ANALOG)
+ mode_ctl |= 0x40;
+ else
+ if (nv_encoder->dcb->type == OUTPUT_TV)
+ mode_ctl |= 0x100;
+
+ if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
+ mode_ctl2 |= NV50_EVO_DAC_MODE_CTRL2_NHSYNC;
+
+ if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
+ mode_ctl2 |= NV50_EVO_DAC_MODE_CTRL2_NVSYNC;
+
+ ret = RING_SPACE(evo, 3);
+ if (ret) {
+ NV_ERROR(dev, "no space while connecting DAC\n");
+ return;
+ }
+ BEGIN_RING(evo, 0, NV50_EVO_DAC(nv_encoder->or, MODE_CTRL), 2);
+ OUT_RING(evo, mode_ctl);
+ OUT_RING(evo, mode_ctl2);
+}
+
+static const struct drm_encoder_helper_funcs nv50_dac_helper_funcs = {
+ .dpms = nv50_dac_dpms,
+ .save = nv50_dac_save,
+ .restore = nv50_dac_restore,
+ .mode_fixup = nv50_dac_mode_fixup,
+ .prepare = nv50_dac_prepare,
+ .commit = nv50_dac_commit,
+ .mode_set = nv50_dac_mode_set,
+ .detect = nv50_dac_detect
+};
+
+static void
+nv50_dac_destroy(struct drm_encoder *encoder)
+{
+ struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
+
+ if (!encoder)
+ return;
+
+ NV_DEBUG(encoder->dev, "\n");
+
+ drm_encoder_cleanup(encoder);
+ kfree(nv_encoder);
+}
+
+static const struct drm_encoder_funcs nv50_dac_encoder_funcs = {
+ .destroy = nv50_dac_destroy,
+};
+
+int
+nv50_dac_create(struct drm_device *dev, struct dcb_entry *entry)
+{
+ struct nouveau_encoder *nv_encoder;
+ struct drm_encoder *encoder;
+
+ NV_DEBUG(dev, "\n");
+ NV_INFO(dev, "Detected a DAC output\n");
+
+ nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
+ if (!nv_encoder)
+ return -ENOMEM;
+ encoder = to_drm_encoder(nv_encoder);
+
+ nv_encoder->dcb = entry;
+ nv_encoder->or = ffs(entry->or) - 1;
+
+ nv_encoder->disconnect = nv50_dac_disconnect;
+
+ drm_encoder_init(dev, encoder, &nv50_dac_encoder_funcs,
+ DRM_MODE_ENCODER_DAC);
+ drm_encoder_helper_add(encoder, &nv50_dac_helper_funcs);
+
+ encoder->possible_crtcs = entry->heads;
+ encoder->possible_clones = 0;
+ return 0;
+}
+