drm/nvd0/disp: start on SOR encoder functions

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 202 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c
index 6339a3d00363..3a2a4bb1276d 100644
--- a/drivers/gpu/drm/nouveau/nvd0_display.c
+++ b/drivers/gpu/drm/nouveau/nvd0_display.c
@@ -23,7 +23,9 @@
  */
 
 #include <linux/dma-mapping.h>
+
 #include "drmP.h"
+#include "drm_crtc_helper.h"
 
 #include "nouveau_drv.h"
 #include "nouveau_connector.h"
@@ -92,6 +94,12 @@ evo_kick(u32 *push, struct drm_device *dev, int id)
 #define evo_mthd(p,m,s) *((p)++) = (((s) << 18) | (m))
 #define evo_data(p,d)   *((p)++) = (d)
 
+static struct drm_crtc *
+nvd0_display_crtc_get(struct drm_encoder *encoder)
+{
+        return nouveau_encoder(encoder)->crtc;
+}
+
 /******************************************************************************
  * DAC
  *****************************************************************************/
@@ -99,6 +107,163 @@ evo_kick(u32 *push, struct drm_device *dev, int id)
 /******************************************************************************
  * SOR
  *****************************************************************************/
+static void
+nvd0_sor_dpms(struct drm_encoder *encoder, int mode)
+{
+        struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
+        struct drm_device *dev = encoder->dev;
+        struct drm_encoder *partner;
+        int or = nv_encoder->or;
+        u32 dpms_ctrl;
+
+        nv_encoder->last_dpms = mode;
+
+        list_for_each_entry(partner, &dev->mode_config.encoder_list, head) {
+                struct nouveau_encoder *nv_partner = nouveau_encoder(partner);
+
+                if (partner->encoder_type != DRM_MODE_ENCODER_TMDS)
+                        continue;
+
+                if (nv_partner != nv_encoder &&
+                    nv_partner->dcb->or == nv_encoder->or) {
+                        if (nv_partner->last_dpms == DRM_MODE_DPMS_ON)
+                                return;
+                        break;
+                }
+        }
+
+        dpms_ctrl  = (mode == DRM_MODE_DPMS_ON);
+        dpms_ctrl |= 0x80000000;
+
+        nv_wait(dev, 0x61c004 + (or * 0x0800), 0x80000000, 0x00000000);
+        nv_mask(dev, 0x61c004 + (or * 0x0800), 0x80000001, dpms_ctrl);
+        nv_wait(dev, 0x61c004 + (or * 0x0800), 0x80000000, 0x00000000);
+        nv_wait(dev, 0x61c030 + (or * 0x0800), 0x10000000, 0x00000000);
+}
+
+static bool
+nvd0_sor_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 *nv_connector;
+
+        nv_connector = nouveau_encoder_connector_get(nv_encoder);
+        if (nv_connector && nv_connector->native_mode) {
+                if (nv_connector->scaling_mode != DRM_MODE_SCALE_NONE) {
+                        int id = adjusted_mode->base.id;
+                        *adjusted_mode = *nv_connector->native_mode;
+                        adjusted_mode->base.id = id;
+                }
+        }
+
+        return true;
+}
+
+static void
+nvd0_sor_prepare(struct drm_encoder *encoder)
+{
+}
+
+static void
+nvd0_sor_commit(struct drm_encoder *encoder)
+{
+}
+
+static void
+nvd0_sor_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 nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
+        u32 mode_ctrl = (1 << nv_crtc->index);
+        u32 *push;
+
+        if (nv_encoder->dcb->sorconf.link & 1) {
+                if (adjusted_mode->clock < 165000)
+                        mode_ctrl |= 0x00000100;
+                else
+                        mode_ctrl |= 0x00000500;
+        } else {
+                mode_ctrl |= 0x00000200;
+        }
+
+        nvd0_sor_dpms(encoder, DRM_MODE_DPMS_ON);
+
+        push = evo_wait(encoder->dev, 0, 2);
+        if (push) {
+                evo_mthd(push, 0x0200 + (nv_encoder->or * 0x20), 1);
+                evo_data(push, mode_ctrl);
+        }
+
+        nv_encoder->crtc = encoder->crtc;
+}
+
+static void
+nvd0_sor_disconnect(struct drm_encoder *encoder)
+{
+        struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
+        struct drm_device *dev = encoder->dev;
+
+        if (nv_encoder->crtc) {
+                u32 *push = evo_wait(dev, 0, 4);
+                if (push) {
+                        evo_mthd(push, 0x0200 + (nv_encoder->or * 0x20), 1);
+                        evo_data(push, 0x00000000);
+                        evo_mthd(push, 0x0080, 1);
+                        evo_data(push, 0x00000000);
+                        evo_kick(push, dev, 0);
+                }
+
+                nv_encoder->crtc = NULL;
+                nv_encoder->last_dpms = DRM_MODE_DPMS_OFF;
+        }
+}
+
+static void
+nvd0_sor_destroy(struct drm_encoder *encoder)
+{
+        drm_encoder_cleanup(encoder);
+        kfree(encoder);
+}
+
+static const struct drm_encoder_helper_funcs nvd0_sor_hfunc = {
+        .dpms = nvd0_sor_dpms,
+        .mode_fixup = nvd0_sor_mode_fixup,
+        .prepare = nvd0_sor_prepare,
+        .commit = nvd0_sor_commit,
+        .mode_set = nvd0_sor_mode_set,
+        .disable = nvd0_sor_disconnect,
+        .get_crtc = nvd0_display_crtc_get,
+};
+
+static const struct drm_encoder_funcs nvd0_sor_func = {
+        .destroy = nvd0_sor_destroy,
+};
+
+static int
+nvd0_sor_create(struct drm_connector *connector, struct dcb_entry *dcbe)
+{
+        struct drm_device *dev = connector->dev;
+        struct nouveau_encoder *nv_encoder;
+        struct drm_encoder *encoder;
+
+        nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
+        if (!nv_encoder)
+                return -ENOMEM;
+        nv_encoder->dcb = dcbe;
+        nv_encoder->or = ffs(dcbe->or) - 1;
+        nv_encoder->last_dpms = DRM_MODE_DPMS_OFF;
+
+        encoder = to_drm_encoder(nv_encoder);
+        encoder->possible_crtcs = dcbe->heads;
+        encoder->possible_clones = 0;
+        drm_encoder_init(dev, encoder, &nvd0_sor_func, DRM_MODE_ENCODER_TMDS);
+        drm_encoder_helper_add(encoder, &nvd0_sor_hfunc);
+
+        drm_mode_connector_attach_encoder(connector, encoder);
+        return 0;
+}
 
 /******************************************************************************
  * IRQ
@@ -256,15 +421,51 @@ nvd0_display_create(struct drm_device *dev)
 {
         struct drm_nouveau_private *dev_priv = dev->dev_private;
         struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
+        struct dcb_table *dcb = &dev_priv->vbios.dcb;
+        struct drm_connector *connector, *tmp;
         struct pci_dev *pdev = dev->pdev;
         struct nvd0_display *disp;
-        int ret;
+        struct dcb_entry *dcbe;
+        int ret, i;
 
         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
         if (!disp)
                 return -ENOMEM;
         dev_priv->engine.display.priv = disp;
 
+        /* create encoder/connector objects based on VBIOS DCB table */
+        for (i = 0, dcbe = &dcb->entry[0]; i < dcb->entries; i++, dcbe++) {
+                connector = nouveau_connector_create(dev, dcbe->connector);
+                if (IS_ERR(connector))
+                        continue;
+
+                if (dcbe->location != DCB_LOC_ON_CHIP) {
+                        NV_WARN(dev, "skipping off-chip encoder %d/%d\n",
+                                dcbe->type, ffs(dcbe->or) - 1);
+                        continue;
+                }
+
+                switch (dcbe->type) {
+                case OUTPUT_TMDS:
+                        nvd0_sor_create(connector, dcbe);
+                        break;
+                default:
+                        NV_WARN(dev, "skipping unsupported encoder %d/%d\n",
+                                dcbe->type, ffs(dcbe->or) - 1);
+                        continue;
+                }
+        }
+
+        /* cull any connectors we created that don't have an encoder */
+        list_for_each_entry_safe(connector, tmp, &dev->mode_config.connector_list, head) {
+                if (connector->encoder_ids[0])
+                        continue;
+
+                NV_WARN(dev, "%s has no encoders, removing\n",
+                        drm_get_connector_name(connector));
+                connector->funcs->destroy(connector);
+        }
+
         /* setup interrupt handling */
         nouveau_irq_register(dev, 26, nvd0_display_intr);