diff options
Diffstat (limited to 'drivers/gpu/drm/sun4i')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_backend.c | 28 | ||||
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_tcon.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun8i_tcon_top.c | 4 |
3 files changed, 25 insertions, 11 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c index ee59da4a0172..4e5922c89d7b 100644 --- a/drivers/gpu/drm/sun4i/sun4i_backend.c +++ b/drivers/gpu/drm/sun4i/sun4i_backend.c @@ -361,13 +361,6 @@ int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend, paddr = drm_fb_cma_get_gem_addr(fb, state, 0); DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &paddr); - /* - * backend DMA accesses DRAM directly, bypassing the system - * bus. As such, the address range is different and the buffer - * address needs to be corrected. - */ - paddr -= PHYS_OFFSET; - if (fb->format->is_yuv) return sun4i_backend_update_yuv_buffer(backend, fb, paddr); @@ -803,6 +796,27 @@ static int sun4i_backend_bind(struct device *dev, struct device *master, dev_set_drvdata(dev, backend); spin_lock_init(&backend->frontend_lock); + if (of_find_property(dev->of_node, "interconnects", NULL)) { + /* + * This assume we have the same DMA constraints for all our the + * devices in our pipeline (all the backends, but also the + * frontends). This sounds bad, but it has always been the case + * for us, and DRM doesn't do per-device allocation either, so + * we would need to fix DRM first... + */ + ret = of_dma_configure(drm->dev, dev->of_node, true); + if (ret) + return ret; + } else { + /* + * If we don't have the interconnect property, most likely + * because of an old DT, we need to set the DMA offset by hand + * on our device since the RAM mapping is at 0 for the DMA bus, + * unlike the CPU. + */ + drm->dev->dma_pfn_offset = PHYS_PFN_OFFSET; + } + backend->engine.node = dev->of_node; backend->engine.ops = &sun4i_backend_engine_ops; backend->engine.id = sun4i_backend_of_get_id(dev->of_node); diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c index fa92e992a282..9d8d8124b1f6 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c @@ -236,8 +236,8 @@ static struct sun4i_tcon *sun4i_get_tcon0(struct drm_device *drm) return NULL; } -void sun4i_tcon_set_mux(struct sun4i_tcon *tcon, int channel, - const struct drm_encoder *encoder) +static void sun4i_tcon_set_mux(struct sun4i_tcon *tcon, int channel, + const struct drm_encoder *encoder) { int ret = -ENOTSUPP; diff --git a/drivers/gpu/drm/sun4i/sun8i_tcon_top.c b/drivers/gpu/drm/sun4i/sun8i_tcon_top.c index b1e7c76e9c17..3267d0f9b9b2 100644 --- a/drivers/gpu/drm/sun4i/sun8i_tcon_top.c +++ b/drivers/gpu/drm/sun4i/sun8i_tcon_top.c @@ -269,12 +269,12 @@ static int sun8i_tcon_top_remove(struct platform_device *pdev) return 0; } -const struct sun8i_tcon_top_quirks sun8i_r40_tcon_top_quirks = { +static const struct sun8i_tcon_top_quirks sun8i_r40_tcon_top_quirks = { .has_tcon_tv1 = true, .has_dsi = true, }; -const struct sun8i_tcon_top_quirks sun50i_h6_tcon_top_quirks = { +static const struct sun8i_tcon_top_quirks sun50i_h6_tcon_top_quirks = { /* Nothing special */ }; |