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 00000000000..fb5838e3be2
--- /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;
+}
+