diff options
Diffstat (limited to 'drivers/gpu/drm/pl111/pl111_drv.c')
| -rw-r--r-- | drivers/gpu/drm/pl111/pl111_drv.c | 93 |
1 files changed, 81 insertions, 12 deletions
diff --git a/drivers/gpu/drm/pl111/pl111_drv.c b/drivers/gpu/drm/pl111/pl111_drv.c index 4621259d5387..47fe30223444 100644 --- a/drivers/gpu/drm/pl111/pl111_drv.c +++ b/drivers/gpu/drm/pl111/pl111_drv.c @@ -60,6 +60,7 @@ #include <linux/slab.h> #include <linux/of.h> #include <linux/of_graph.h> +#include <linux/of_reserved_mem.h> #include <drm/drmP.h> #include <drm/drm_atomic_helper.h> @@ -74,6 +75,7 @@ #include "pl111_drm.h" #include "pl111_versatile.h" +#include "pl111_nomadik.h" #define DRIVER_DESC "DRM module for PL111" @@ -207,6 +209,24 @@ finish: return ret; } +static struct drm_gem_object * +pl111_gem_import_sg_table(struct drm_device *dev, + struct dma_buf_attachment *attach, + struct sg_table *sgt) +{ + struct pl111_drm_dev_private *priv = dev->dev_private; + + /* + * When using device-specific reserved memory we can't import + * DMA buffers: those are passed by reference in any global + * memory and we can only handle a specific range of memory. + */ + if (priv->use_device_memory) + return ERR_PTR(-EINVAL); + + return drm_gem_cma_prime_import_sg_table(dev, attach, sgt); +} + DEFINE_DRM_GEM_CMA_FOPS(drm_fops); static struct drm_driver pl111_drm_driver = { @@ -227,9 +247,11 @@ static struct drm_driver pl111_drm_driver = { .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_import = drm_gem_prime_import, - .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, + .gem_prime_import_sg_table = pl111_gem_import_sg_table, .gem_prime_export = drm_gem_prime_export, .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, + .gem_prime_mmap = drm_gem_cma_prime_mmap, + .gem_prime_vmap = drm_gem_cma_prime_vmap, #if defined(CONFIG_DEBUG_FS) .debugfs_init = pl111_debugfs_init, @@ -257,14 +279,20 @@ static int pl111_amba_probe(struct amba_device *amba_dev, drm->dev_private = priv; priv->variant = variant; + ret = of_reserved_mem_device_init(dev); + if (!ret) { + dev_info(dev, "using device-specific reserved memory\n"); + priv->use_device_memory = true; + } + if (of_property_read_u32(dev->of_node, "max-memory-bandwidth", &priv->memory_bw)) { dev_info(dev, "no max memory bandwidth specified, assume unlimited\n"); priv->memory_bw = 0; } - /* The two variants swap this register */ - if (variant->is_pl110) { + /* The two main variants swap this register */ + if (variant->is_pl110 || variant->is_lcdc) { priv->ienb = CLCD_PL110_IENB; priv->ctrl = CLCD_PL110_CNTL; } else { @@ -275,13 +303,16 @@ static int pl111_amba_probe(struct amba_device *amba_dev, priv->regs = devm_ioremap_resource(dev, &amba_dev->res); if (IS_ERR(priv->regs)) { dev_err(dev, "%s failed mmio\n", __func__); - return PTR_ERR(priv->regs); + ret = PTR_ERR(priv->regs); + goto dev_put; } /* This may override some variant settings */ ret = pl111_versatile_init(dev, priv); if (ret) - goto dev_unref; + goto dev_put; + + pl111_nomadik_init(dev); /* turn off interrupts before requesting the irq */ writel(0, priv->regs + priv->ienb); @@ -295,21 +326,24 @@ static int pl111_amba_probe(struct amba_device *amba_dev, ret = pl111_modeset_init(drm); if (ret != 0) - goto dev_unref; + goto dev_put; ret = drm_dev_register(drm, 0); if (ret < 0) - goto dev_unref; + goto dev_put; return 0; -dev_unref: - drm_dev_unref(drm); +dev_put: + drm_dev_put(drm); + of_reserved_mem_device_release(dev); + return ret; } static int pl111_amba_remove(struct amba_device *amba_dev) { + struct device *dev = &amba_dev->dev; struct drm_device *drm = amba_get_drvdata(amba_dev); struct pl111_drm_dev_private *priv = drm->dev_private; @@ -318,7 +352,8 @@ static int pl111_amba_remove(struct amba_device *amba_dev) if (priv->panel) drm_panel_bridge_remove(priv->bridge); drm_mode_config_cleanup(drm); - drm_dev_unref(drm); + drm_dev_put(drm); + of_reserved_mem_device_release(dev); return 0; } @@ -370,16 +405,50 @@ static const struct pl111_variant_data pl111_variant = { .fb_bpp = 32, }; +static const u32 pl110_nomadik_pixel_formats[] = { + DRM_FORMAT_RGB888, + DRM_FORMAT_BGR888, + DRM_FORMAT_ABGR8888, + DRM_FORMAT_XBGR8888, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_BGR565, + DRM_FORMAT_RGB565, + DRM_FORMAT_ABGR1555, + DRM_FORMAT_XBGR1555, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_XRGB1555, + DRM_FORMAT_ABGR4444, + DRM_FORMAT_XBGR4444, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_XRGB4444, +}; + +static const struct pl111_variant_data pl110_nomadik_variant = { + .name = "LCDC (PL110 Nomadik)", + .formats = pl110_nomadik_pixel_formats, + .nformats = ARRAY_SIZE(pl110_nomadik_pixel_formats), + .is_lcdc = true, + .st_bitmux_control = true, + .broken_vblank = true, + .fb_bpp = 16, +}; + static const struct amba_id pl111_id_table[] = { { .id = 0x00041110, .mask = 0x000fffff, - .data = (void*)&pl110_variant, + .data = (void *)&pl110_variant, + }, + { + .id = 0x00180110, + .mask = 0x00fffffe, + .data = (void *)&pl110_nomadik_variant, }, { .id = 0x00041111, .mask = 0x000fffff, - .data = (void*)&pl111_variant, + .data = (void *)&pl111_variant, }, {0, 0}, }; |