static int rcar_du_probe(struct platform_device *pdev)
{
struct rcar_du_device *rcdu;
struct drm_device *ddev;
struct resource *mem;
int ret;
/* Allocate and initialize the R-Car device structure. */
rcdu = devm_kzalloc(&pdev->dev, sizeof(*rcdu), GFP_KERNEL);
if (rcdu == NULL)
return -ENOMEM;
rcdu->dev = &pdev->dev;
rcdu->info = of_device_get_match_data(rcdu->dev);
platform_set_drvdata(pdev, rcdu);
/* I/O resources */
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
rcdu->mmio = devm_ioremap_resource(&pdev->dev, mem);
if (IS_ERR(rcdu->mmio))
return PTR_ERR(rcdu->mmio);
/* DRM/KMS objects */
ddev = drm_dev_alloc(&rcar_du_driver, &pdev->dev);
if (IS_ERR(ddev))
return PTR_ERR(ddev);
rcdu->ddev = ddev;
ddev->dev_private = rcdu;
ret = rcar_du_modeset_init(rcdu);
if (ret < 0) {
if (ret != -EPROBE_DEFER)
dev_err(&pdev->dev,
"failed to initialize DRM/KMS (%d)\n", ret);
goto error;
}
ddev->irq_enabled = 1;
/*
* Register the DRM device with the core and the connectors with
* sysfs.
*/
ret = drm_dev_register(ddev, 0);
if (ret)
goto error;
DRM_INFO("Device %s probed\n", dev_name(&pdev->dev));
drm_fbdev_generic_setup(ddev, 32);
return 0;
error:
rcar_du_remove(pdev);
return ret;
}
static int atmel_hlcdc_dc_drm_probe(struct platform_device *pdev)
{
struct drm_device *ddev;
int ret;
ddev = drm_dev_alloc(&atmel_hlcdc_dc_driver, &pdev->dev);
if (!ddev)
return -ENOMEM;
ret = atmel_hlcdc_dc_load(ddev);
if (ret)
goto err_unref;
ret = drm_dev_register(ddev, 0);
if (ret)
goto err_unload;
return 0;
err_unload:
atmel_hlcdc_dc_unload(ddev);
err_unref:
drm_dev_unref(ddev);
return ret;
}
static int drm_get_platform_dev(struct platform_device *platdev,
struct drm_driver *driver)
{
struct drm_device *dev;
int ret;
DRM_DEBUG("\n");
dev = drm_dev_alloc(driver, &platdev->dev);
if (!dev)
return -ENOMEM;
dev->platformdev = platdev;
ret = drm_dev_register(dev, 0);
if (ret)
goto err_free;
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
driver->name, driver->major, driver->minor, driver->patchlevel,
driver->date, dev->primary->index);
return 0;
err_free:
drm_dev_unref(dev);
return ret;
}
static int arcpgu_probe(struct platform_device *pdev)
{
struct drm_device *drm;
int ret;
drm = drm_dev_alloc(&arcpgu_drm_driver, &pdev->dev);
if (!drm)
return -ENOMEM;
ret = arcpgu_load(drm);
if (ret)
goto err_unref;
ret = drm_dev_register(drm, 0);
if (ret)
goto err_unload;
return 0;
err_unload:
arcpgu_unload(drm);
err_unref:
drm_dev_unref(drm);
return ret;
}
int drm_get_usb_dev(struct usb_interface *interface,
const struct usb_device_id *id,
struct drm_driver *driver)
{
struct drm_device *dev;
int ret;
DRM_DEBUG("\n");
dev = drm_dev_alloc(driver, &interface->dev);
if (!dev)
return -ENOMEM;
dev->usbdev = interface_to_usbdev(interface);
usb_set_intfdata(interface, dev);
ret = drm_dev_register(dev, 0);
if (ret)
goto err_free;
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
driver->name, driver->major, driver->minor, driver->patchlevel,
driver->date, dev->primary->index);
return 0;
err_free:
drm_dev_unref(dev);
return ret;
}
static int kirin_drm_bind(struct device *dev)
{
struct drm_driver *driver = &kirin_drm_driver;
struct drm_device *drm_dev;
int ret;
drm_dev = drm_dev_alloc(driver, dev);
if (IS_ERR(drm_dev))
return PTR_ERR(drm_dev);
ret = kirin_drm_kms_init(drm_dev);
if (ret)
goto err_drm_dev_unref;
ret = drm_dev_register(drm_dev, 0);
if (ret)
goto err_kms_cleanup;
return 0;
err_kms_cleanup:
kirin_drm_kms_cleanup(drm_dev);
err_drm_dev_unref:
drm_dev_unref(drm_dev);
return ret;
}
static int stm_drm_platform_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct drm_device *ddev;
int ret;
DRM_DEBUG("%s\n", __func__);
dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
ddev = drm_dev_alloc(&drv_driver, dev);
if (IS_ERR(ddev))
return PTR_ERR(ddev);
ret = drv_load(ddev);
if (ret)
goto err_put;
ret = drm_dev_register(ddev, 0);
if (ret)
goto err_put;
drm_fbdev_generic_setup(ddev, 16);
return 0;
err_put:
drm_dev_put(ddev);
return ret;
}
static int mxsfb_probe(struct platform_device *pdev)
{
struct drm_device *drm;
const struct of_device_id *of_id =
of_match_device(mxsfb_dt_ids, &pdev->dev);
int ret;
if (!pdev->dev.of_node)
return -ENODEV;
if (of_id)
pdev->id_entry = of_id->data;
drm = drm_dev_alloc(&mxsfb_driver, &pdev->dev);
if (!drm)
return -ENOMEM;
ret = mxsfb_load(drm, 0);
if (ret)
goto err_free;
ret = drm_dev_register(drm, 0);
if (ret)
goto err_unload;
return 0;
err_unload:
mxsfb_unload(drm);
err_free:
drm_dev_unref(drm);
return ret;
}
/*
* Platform driver:
*/
static int etnaviv_bind(struct device *dev)
{
struct etnaviv_drm_private *priv;
struct drm_device *drm;
int ret;
drm = drm_dev_alloc(&etnaviv_drm_driver, dev);
if (!drm)
return -ENOMEM;
drm->platformdev = to_platform_device(dev);
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
dev_err(dev, "failed to allocate private data\n");
ret = -ENOMEM;
goto out_unref;
}
drm->dev_private = priv;
priv->wq = alloc_ordered_workqueue("etnaviv", 0);
if (!priv->wq) {
ret = -ENOMEM;
goto out_wq;
}
mutex_init(&priv->gem_lock);
INIT_LIST_HEAD(&priv->gem_list);
priv->num_gpus = 0;
dev_set_drvdata(dev, drm);
ret = component_bind_all(dev, drm);
if (ret < 0)
goto out_bind;
load_gpu(drm);
ret = drm_dev_register(drm, 0);
if (ret)
goto out_register;
return 0;
out_register:
component_unbind_all(dev, drm);
out_bind:
flush_workqueue(priv->wq);
destroy_workqueue(priv->wq);
out_wq:
kfree(priv);
out_unref:
drm_dev_unref(drm);
return ret;
}
static int nouveau_platform_probe(struct platform_device *pdev)
{
struct nouveau_platform_gpu *gpu;
struct nouveau_platform_device *device;
struct drm_device *drm;
int err;
gpu = devm_kzalloc(&pdev->dev, sizeof(*gpu), GFP_KERNEL);
if (!gpu)
return -ENOMEM;
gpu->vdd = devm_regulator_get(&pdev->dev, "vdd");
if (IS_ERR(gpu->vdd))
return PTR_ERR(gpu->vdd);
gpu->rst = devm_reset_control_get(&pdev->dev, "gpu");
if (IS_ERR(gpu->rst))
return PTR_ERR(gpu->rst);
gpu->clk = devm_clk_get(&pdev->dev, "gpu");
if (IS_ERR(gpu->clk))
return PTR_ERR(gpu->clk);
gpu->clk_pwr = devm_clk_get(&pdev->dev, "pwr");
if (IS_ERR(gpu->clk_pwr))
return PTR_ERR(gpu->clk_pwr);
err = nouveau_platform_power_up(gpu);
if (err)
return err;
drm = nouveau_platform_device_create(pdev, &device);
if (IS_ERR(drm)) {
err = PTR_ERR(drm);
goto power_down;
}
device->gpu = gpu;
err = drm_dev_register(drm, 0);
if (err < 0)
goto err_unref;
return 0;
err_unref:
drm_dev_unref(drm);
return 0;
power_down:
nouveau_platform_power_down(gpu);
return err;
}
static int hx8357d_probe(struct spi_device *spi)
{
struct device *dev = &spi->dev;
struct drm_device *drm;
struct mipi_dbi *mipi;
struct gpio_desc *dc;
u32 rotation = 0;
int ret;
mipi = kzalloc(sizeof(*mipi), GFP_KERNEL);
if (!mipi)
return -ENOMEM;
drm = &mipi->drm;
ret = devm_drm_dev_init(dev, drm, &hx8357d_driver);
if (ret) {
kfree(mipi);
return ret;
}
drm_mode_config_init(drm);
dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW);
if (IS_ERR(dc)) {
DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
return PTR_ERR(dc);
}
mipi->backlight = devm_of_find_backlight(dev);
if (IS_ERR(mipi->backlight))
return PTR_ERR(mipi->backlight);
device_property_read_u32(dev, "rotation", &rotation);
ret = mipi_dbi_spi_init(spi, mipi, dc);
if (ret)
return ret;
ret = mipi_dbi_init(mipi, &hx8357d_pipe_funcs, &yx350hv15_mode, rotation);
if (ret)
return ret;
drm_mode_config_reset(drm);
ret = drm_dev_register(drm, 0);
if (ret)
return ret;
spi_set_drvdata(spi, drm);
drm_fbdev_generic_setup(drm, 0);
return 0;
}
struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev)
{
struct komeda_kms_dev *kms = kzalloc(sizeof(*kms), GFP_KERNEL);
struct drm_device *drm;
int err;
if (!kms)
return ERR_PTR(-ENOMEM);
drm = &kms->base;
err = drm_dev_init(drm, &komeda_kms_driver, mdev->dev);
if (err)
goto free_kms;
drm->dev_private = mdev;
komeda_kms_mode_config_init(kms, mdev);
err = komeda_kms_add_private_objs(kms, mdev);
if (err)
goto cleanup_mode_config;
err = komeda_kms_add_planes(kms, mdev);
if (err)
goto cleanup_mode_config;
err = drm_vblank_init(drm, kms->n_crtcs);
if (err)
goto cleanup_mode_config;
err = komeda_kms_add_crtcs(kms, mdev);
if (err)
goto cleanup_mode_config;
err = component_bind_all(mdev->dev, kms);
if (err)
goto cleanup_mode_config;
drm_mode_config_reset(drm);
err = drm_dev_register(drm, 0);
if (err)
goto cleanup_mode_config;
return kms;
cleanup_mode_config:
drm_mode_config_cleanup(drm);
free_kms:
kfree(kms);
return ERR_PTR(err);
}
static int vc4_drm_bind(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct drm_device *drm;
struct vc4_dev *vc4;
int ret = 0;
dev->coherent_dma_mask = DMA_BIT_MASK(32);
vc4 = devm_kzalloc(dev, sizeof(*vc4), GFP_KERNEL);
if (!vc4)
return -ENOMEM;
drm = drm_dev_alloc(&vc4_drm_driver, dev);
if (IS_ERR(drm))
return PTR_ERR(drm);
platform_set_drvdata(pdev, drm);
vc4->dev = drm;
drm->dev_private = vc4;
ret = vc4_bo_cache_init(drm);
if (ret)
goto dev_unref;
drm_mode_config_init(drm);
vc4_gem_init(drm);
ret = component_bind_all(dev, drm);
if (ret)
goto gem_destroy;
vc4_kick_out_firmware_fb();
ret = drm_dev_register(drm, 0);
if (ret < 0)
goto unbind_all;
vc4_kms_load(drm);
return 0;
unbind_all:
component_unbind_all(dev, drm);
gem_destroy:
vc4_gem_destroy(drm);
vc4_bo_cache_destroy(drm);
dev_unref:
drm_dev_unref(drm);
return ret;
}
static int pl111_amba_probe(struct amba_device *amba_dev,
const struct amba_id *id)
{
struct device *dev = &amba_dev->dev;
struct pl111_drm_dev_private *priv;
struct drm_device *drm;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
drm = drm_dev_alloc(&pl111_drm_driver, dev);
if (IS_ERR(drm))
return PTR_ERR(drm);
amba_set_drvdata(amba_dev, drm);
priv->drm = drm;
drm->dev_private = priv;
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);
}
/* turn off interrupts before requesting the irq */
writel(0, priv->regs + CLCD_PL111_IENB);
ret = devm_request_irq(dev, amba_dev->irq[0], pl111_irq, 0,
"pl111", priv);
if (ret != 0) {
dev_err(dev, "%s failed irq %d\n", __func__, ret);
return ret;
}
ret = pl111_modeset_init(drm);
if (ret != 0)
goto dev_unref;
ret = drm_dev_register(drm, 0);
if (ret < 0)
goto dev_unref;
return 0;
dev_unref:
drm_dev_unref(drm);
return ret;
}
static int tinydrm_register(struct tinydrm_device *tdev)
{
struct drm_device *drm = tdev->drm;
int ret;
ret = drm_dev_register(tdev->drm, 0);
if (ret)
return ret;
ret = drm_fb_cma_fbdev_init_with_funcs(drm, 0, 0, tdev->fb_funcs);
if (ret)
DRM_ERROR("Failed to initialize fbdev: %d\n", ret);
return 0;
}
/*
* Platform driver:
*/
static int etnaviv_bind(struct device *dev)
{
struct etnaviv_drm_private *priv;
struct drm_device *drm;
int ret;
drm = drm_dev_alloc(&etnaviv_drm_driver, dev);
if (IS_ERR(drm))
return PTR_ERR(drm);
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
dev_err(dev, "failed to allocate private data\n");
ret = -ENOMEM;
goto out_unref;
}
drm->dev_private = priv;
mutex_init(&priv->gem_lock);
INIT_LIST_HEAD(&priv->gem_list);
priv->num_gpus = 0;
dev_set_drvdata(dev, drm);
ret = component_bind_all(dev, drm);
if (ret < 0)
goto out_bind;
load_gpu(drm);
ret = drm_dev_register(drm, 0);
if (ret)
goto out_register;
return 0;
out_register:
component_unbind_all(dev, drm);
out_bind:
kfree(priv);
out_unref:
drm_dev_unref(drm);
return ret;
}
static int nouveau_platform_probe(struct platform_device *pdev)
{
struct nouveau_device *device;
struct drm_device *drm;
int ret;
drm = nouveau_platform_device_create(pdev, &device);
if (IS_ERR(drm))
return PTR_ERR(drm);
ret = drm_dev_register(drm, 0);
if (ret < 0) {
drm_dev_unref(drm);
return ret;
}
return 0;
}
static int bochs_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct drm_device *dev;
unsigned long fbsize;
int ret;
fbsize = pci_resource_len(pdev, 0);
if (fbsize < 4 * 1024 * 1024) {
DRM_ERROR("less than 4 MB video memory, ignoring device\n");
return -ENOMEM;
}
ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, 0, "bochsdrmfb");
if (ret)
return ret;
dev = drm_dev_alloc(&bochs_driver, &pdev->dev);
if (IS_ERR(dev))
return PTR_ERR(dev);
ret = pci_enable_device(pdev);
if (ret)
goto err_free_dev;
dev->pdev = pdev;
pci_set_drvdata(pdev, dev);
ret = bochs_load(dev);
if (ret)
goto err_free_dev;
ret = drm_dev_register(dev, 0);
if (ret)
goto err_unload;
return ret;
err_unload:
bochs_unload(dev);
err_free_dev:
drm_dev_put(dev);
return ret;
}
static int udl_usb_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
int r;
struct udl_device *udl;
udl = udl_driver_create(interface);
if (IS_ERR(udl))
return PTR_ERR(udl);
r = drm_dev_register(&udl->drm, 0);
if (r)
goto err_free;
DRM_INFO("Initialized udl on minor %d\n", udl->drm.primary->index);
return 0;
err_free:
drm_dev_put(&udl->drm);
return r;
}
static int __init vgem_init(void)
{
int ret;
vgem_device = kzalloc(sizeof(*vgem_device), GFP_KERNEL);
if (!vgem_device)
return -ENOMEM;
vgem_device->platform =
platform_device_register_simple("vgem", -1, NULL, 0);
if (IS_ERR(vgem_device->platform)) {
ret = PTR_ERR(vgem_device->platform);
goto out_free;
}
dma_coerce_mask_and_coherent(&vgem_device->platform->dev,
DMA_BIT_MASK(64));
ret = drm_dev_init(&vgem_device->drm, &vgem_driver,
&vgem_device->platform->dev);
if (ret)
goto out_unregister;
/* Final step: expose the device/driver to userspace */
ret = drm_dev_register(&vgem_device->drm, 0);
if (ret)
goto out_fini;
return 0;
out_fini:
drm_dev_fini(&vgem_device->drm);
out_unregister:
platform_device_unregister(vgem_device->platform);
out_free:
kfree(vgem_device);
return ret;
}
static int virtio_gpu_probe(struct virtio_device *vdev)
{
struct drm_device *dev;
int ret;
if (vgacon_text_force() && virtio_gpu_modeset == -1)
return -EINVAL;
if (virtio_gpu_modeset == 0)
return -EINVAL;
dev = drm_dev_alloc(&driver, &vdev->dev);
if (IS_ERR(dev))
return PTR_ERR(dev);
vdev->priv = dev;
if (!strcmp(vdev->dev.parent->bus->name, "pci")) {
ret = virtio_gpu_pci_quirk(dev, vdev);
if (ret)
goto err_free;
}
ret = virtio_gpu_init(dev);
if (ret)
goto err_free;
ret = drm_dev_register(dev, 0);
if (ret)
goto err_free;
drm_fbdev_generic_setup(vdev->priv, 32);
return 0;
err_free:
drm_dev_put(dev);
return ret;
}
int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev)
{
struct drm_device *dev;
int ret;
dev = drm_dev_alloc(driver, &vdev->dev);
if (IS_ERR(dev))
return PTR_ERR(dev);
dev->virtdev = vdev;
vdev->priv = dev;
if (strcmp(vdev->dev.parent->bus->name, "pci") == 0) {
struct pci_dev *pdev = to_pci_dev(vdev->dev.parent);
bool vga = (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;
DRM_INFO("pci: %s detected\n",
vga ? "virtio-vga" : "virtio-gpu-pci");
dev->pdev = pdev;
if (vga)
virtio_pci_kick_out_firmware_fb(pdev);
}
ret = drm_dev_register(dev, 0);
if (ret)
goto err_free;
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name,
driver->major, driver->minor, driver->patchlevel,
driver->date, dev->primary->index);
return 0;
err_free:
drm_dev_unref(dev);
return ret;
}
static int udl_usb_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(interface);
struct drm_device *dev;
int r;
dev = drm_dev_alloc(&driver, &interface->dev);
if (!dev)
return -ENOMEM;
r = drm_dev_register(dev, (unsigned long)udev);
if (r)
goto err_free;
usb_set_intfdata(interface, dev);
DRM_INFO("Initialized udl on minor %d\n", dev->primary->index);
return 0;
err_free:
drm_dev_unref(dev);
return r;
}
static int fsl_dcu_drm_probe(struct platform_device *pdev)
{
struct fsl_dcu_drm_device *fsl_dev;
struct drm_device *drm;
struct device *dev = &pdev->dev;
struct resource *res;
void __iomem *base;
struct drm_driver *driver = &fsl_dcu_drm_driver;
struct clk *pix_clk_in;
char pix_clk_name[32];
const char *pix_clk_in_name;
const struct of_device_id *id;
int ret;
u8 div_ratio_shift = 0;
fsl_dev = devm_kzalloc(dev, sizeof(*fsl_dev), GFP_KERNEL);
if (!fsl_dev)
return -ENOMEM;
id = of_match_node(fsl_dcu_of_match, pdev->dev.of_node);
if (!id)
return -ENODEV;
fsl_dev->soc = id->data;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base)) {
ret = PTR_ERR(base);
return ret;
}
fsl_dev->irq = platform_get_irq(pdev, 0);
if (fsl_dev->irq < 0) {
dev_err(dev, "failed to get irq\n");
return fsl_dev->irq;
}
fsl_dev->regmap = devm_regmap_init_mmio(dev, base,
&fsl_dcu_regmap_config);
if (IS_ERR(fsl_dev->regmap)) {
dev_err(dev, "regmap init failed\n");
return PTR_ERR(fsl_dev->regmap);
}
fsl_dev->clk = devm_clk_get(dev, "dcu");
if (IS_ERR(fsl_dev->clk)) {
dev_err(dev, "failed to get dcu clock\n");
return PTR_ERR(fsl_dev->clk);
}
ret = clk_prepare_enable(fsl_dev->clk);
if (ret < 0) {
dev_err(dev, "failed to enable dcu clk\n");
return ret;
}
pix_clk_in = devm_clk_get(dev, "pix");
if (IS_ERR(pix_clk_in)) {
/* legancy binding, use dcu clock as pixel clock input */
pix_clk_in = fsl_dev->clk;
}
if (of_property_read_bool(dev->of_node, "big-endian"))
div_ratio_shift = 24;
pix_clk_in_name = __clk_get_name(pix_clk_in);
snprintf(pix_clk_name, sizeof(pix_clk_name), "%s_pix", pix_clk_in_name);
fsl_dev->pix_clk = clk_register_divider(dev, pix_clk_name,
pix_clk_in_name, 0, base + DCU_DIV_RATIO,
div_ratio_shift, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL);
if (IS_ERR(fsl_dev->pix_clk)) {
dev_err(dev, "failed to register pix clk\n");
ret = PTR_ERR(fsl_dev->pix_clk);
goto disable_clk;
}
fsl_dev->tcon = fsl_tcon_init(dev);
drm = drm_dev_alloc(driver, dev);
if (IS_ERR(drm)) {
ret = PTR_ERR(drm);
goto unregister_pix_clk;
}
fsl_dev->dev = dev;
fsl_dev->drm = drm;
fsl_dev->np = dev->of_node;
drm->dev_private = fsl_dev;
dev_set_drvdata(dev, fsl_dev);
ret = drm_dev_register(drm, 0);
if (ret < 0)
goto unref;
return 0;
unref:
drm_dev_unref(drm);
unregister_pix_clk:
clk_unregister(fsl_dev->pix_clk);
disable_clk:
clk_disable_unprepare(fsl_dev->clk);
return ret;
}
static int fsl_dcu_drm_probe(struct platform_device *pdev)
{
struct fsl_dcu_drm_device *fsl_dev;
struct drm_device *drm;
struct device *dev = &pdev->dev;
struct resource *res;
void __iomem *base;
struct drm_driver *driver = &fsl_dcu_drm_driver;
struct clk *pix_clk_in;
char pix_clk_name[32];
const char *pix_clk_in_name;
const struct of_device_id *id;
int ret;
fsl_dev = devm_kzalloc(dev, sizeof(*fsl_dev), GFP_KERNEL);
if (!fsl_dev)
return -ENOMEM;
id = of_match_node(fsl_dcu_of_match, pdev->dev.of_node);
if (!id)
return -ENODEV;
fsl_dev->soc = id->data;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "could not get memory IO resource\n");
return -ENODEV;
}
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base)) {
ret = PTR_ERR(base);
return ret;
}
fsl_dev->irq = platform_get_irq(pdev, 0);
if (fsl_dev->irq < 0) {
dev_err(dev, "failed to get irq\n");
return -ENXIO;
}
fsl_dev->regmap = devm_regmap_init_mmio(dev, base,
&fsl_dcu_regmap_config);
if (IS_ERR(fsl_dev->regmap)) {
dev_err(dev, "regmap init failed\n");
return PTR_ERR(fsl_dev->regmap);
}
fsl_dev->clk = devm_clk_get(dev, "dcu");
if (IS_ERR(fsl_dev->clk)) {
dev_err(dev, "failed to get dcu clock\n");
return PTR_ERR(fsl_dev->clk);
}
ret = clk_prepare_enable(fsl_dev->clk);
if (ret < 0) {
dev_err(dev, "failed to enable dcu clk\n");
return ret;
}
pix_clk_in = devm_clk_get(dev, "pix");
if (IS_ERR(pix_clk_in)) {
/* legancy binding, use dcu clock as pixel clock input */
pix_clk_in = fsl_dev->clk;
}
pix_clk_in_name = __clk_get_name(pix_clk_in);
snprintf(pix_clk_name, sizeof(pix_clk_name), "%s_pix", pix_clk_in_name);
fsl_dev->pix_clk = clk_register_divider(dev, pix_clk_name,
pix_clk_in_name, 0, base + DCU_DIV_RATIO,
0, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL);
if (IS_ERR(fsl_dev->pix_clk)) {
dev_err(dev, "failed to register pix clk\n");
ret = PTR_ERR(fsl_dev->pix_clk);
goto disable_clk;
}
ret = clk_prepare_enable(fsl_dev->pix_clk);
if (ret < 0) {
dev_err(dev, "failed to enable pix clk\n");
goto unregister_pix_clk;
}
fsl_dev->tcon = fsl_tcon_init(dev);
drm = drm_dev_alloc(driver, dev);
if (!drm) {
ret = -ENOMEM;
goto disable_pix_clk;
}
fsl_dev->dev = dev;
fsl_dev->drm = drm;
fsl_dev->np = dev->of_node;
drm->dev_private = fsl_dev;
dev_set_drvdata(dev, fsl_dev);
ret = drm_dev_register(drm, 0);
if (ret < 0)
goto unref;
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name,
driver->major, driver->minor, driver->patchlevel,
driver->date, drm->primary->index);
return 0;
unref:
drm_dev_unref(drm);
disable_pix_clk:
clk_disable_unprepare(fsl_dev->pix_clk);
unregister_pix_clk:
clk_unregister(fsl_dev->pix_clk);
disable_clk:
clk_disable_unprepare(fsl_dev->clk);
return ret;
}
static int malidp_bind(struct device *dev)
{
struct resource *res;
struct drm_device *drm;
struct device_node *ep;
struct malidp_drm *malidp;
struct malidp_hw_device *hwdev;
struct platform_device *pdev = to_platform_device(dev);
/* number of lines for the R, G and B output */
u8 output_width[MAX_OUTPUT_CHANNELS];
int ret = 0, i;
u32 version, out_depth = 0;
malidp = devm_kzalloc(dev, sizeof(*malidp), GFP_KERNEL);
if (!malidp)
return -ENOMEM;
hwdev = devm_kzalloc(dev, sizeof(*hwdev), GFP_KERNEL);
if (!hwdev)
return -ENOMEM;
/*
* copy the associated data from malidp_drm_of_match to avoid
* having to keep a reference to the OF node after binding
*/
memcpy(hwdev, of_device_get_match_data(dev), sizeof(*hwdev));
malidp->dev = hwdev;
INIT_LIST_HEAD(&malidp->event_list);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hwdev->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(hwdev->regs))
return PTR_ERR(hwdev->regs);
hwdev->pclk = devm_clk_get(dev, "pclk");
if (IS_ERR(hwdev->pclk))
return PTR_ERR(hwdev->pclk);
hwdev->aclk = devm_clk_get(dev, "aclk");
if (IS_ERR(hwdev->aclk))
return PTR_ERR(hwdev->aclk);
hwdev->mclk = devm_clk_get(dev, "mclk");
if (IS_ERR(hwdev->mclk))
return PTR_ERR(hwdev->mclk);
hwdev->pxlclk = devm_clk_get(dev, "pxlclk");
if (IS_ERR(hwdev->pxlclk))
return PTR_ERR(hwdev->pxlclk);
/* Get the optional framebuffer memory resource */
ret = of_reserved_mem_device_init(dev);
if (ret && ret != -ENODEV)
return ret;
drm = drm_dev_alloc(&malidp_driver, dev);
if (IS_ERR(drm)) {
ret = PTR_ERR(drm);
goto alloc_fail;
}
/* Enable APB clock in order to get access to the registers */
clk_prepare_enable(hwdev->pclk);
/*
* Enable AXI clock and main clock so that prefetch can start once
* the registers are set
*/
clk_prepare_enable(hwdev->aclk);
clk_prepare_enable(hwdev->mclk);
ret = hwdev->query_hw(hwdev);
if (ret) {
DRM_ERROR("Invalid HW configuration\n");
goto query_hw_fail;
}
version = malidp_hw_read(hwdev, hwdev->map.dc_base + MALIDP_DE_CORE_ID);
DRM_INFO("found ARM Mali-DP%3x version r%dp%d\n", version >> 16,
(version >> 12) & 0xf, (version >> 8) & 0xf);
/* set the number of lines used for output of RGB data */
ret = of_property_read_u8_array(dev->of_node,
"arm,malidp-output-port-lines",
output_width, MAX_OUTPUT_CHANNELS);
if (ret)
goto query_hw_fail;
for (i = 0; i < MAX_OUTPUT_CHANNELS; i++)
out_depth = (out_depth << 8) | (output_width[i] & 0xf);
malidp_hw_write(hwdev, out_depth, hwdev->map.out_depth_base);
drm->dev_private = malidp;
dev_set_drvdata(dev, drm);
atomic_set(&malidp->config_valid, 0);
init_waitqueue_head(&malidp->wq);
ret = malidp_init(drm);
if (ret < 0)
goto init_fail;
ret = drm_dev_register(drm, 0);
if (ret)
goto register_fail;
/* Set the CRTC's port so that the encoder component can find it */
ep = of_graph_get_next_endpoint(dev->of_node, NULL);
if (!ep) {
ret = -EINVAL;
goto port_fail;
}
malidp->crtc.port = of_get_next_parent(ep);
ret = component_bind_all(dev, drm);
if (ret) {
DRM_ERROR("Failed to bind all components\n");
goto bind_fail;
}
ret = malidp_irq_init(pdev);
if (ret < 0)
goto irq_init_fail;
ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
if (ret < 0) {
DRM_ERROR("failed to initialise vblank\n");
goto vblank_fail;
}
drm_mode_config_reset(drm);
malidp->fbdev = drm_fbdev_cma_init(drm, 32, drm->mode_config.num_crtc,
drm->mode_config.num_connector);
if (IS_ERR(malidp->fbdev)) {
ret = PTR_ERR(malidp->fbdev);
malidp->fbdev = NULL;
goto fbdev_fail;
}
drm_kms_helper_poll_init(drm);
return 0;
fbdev_fail:
drm_vblank_cleanup(drm);
vblank_fail:
malidp_se_irq_fini(drm);
malidp_de_irq_fini(drm);
irq_init_fail:
component_unbind_all(dev, drm);
bind_fail:
of_node_put(malidp->crtc.port);
malidp->crtc.port = NULL;
port_fail:
drm_dev_unregister(drm);
register_fail:
malidp_de_planes_destroy(drm);
drm_mode_config_cleanup(drm);
init_fail:
drm->dev_private = NULL;
dev_set_drvdata(dev, NULL);
query_hw_fail:
clk_disable_unprepare(hwdev->mclk);
clk_disable_unprepare(hwdev->aclk);
clk_disable_unprepare(hwdev->pclk);
drm_dev_unref(drm);
alloc_fail:
of_reserved_mem_device_release(dev);
return ret;
}
static int rcar_du_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct rcar_du_device *rcdu;
struct drm_connector *connector;
struct drm_device *ddev;
struct resource *mem;
int ret;
if (np == NULL) {
dev_err(&pdev->dev, "no device tree node\n");
return -ENODEV;
}
/* Allocate and initialize the DRM and R-Car device structures. */
rcdu = devm_kzalloc(&pdev->dev, sizeof(*rcdu), GFP_KERNEL);
if (rcdu == NULL)
return -ENOMEM;
init_waitqueue_head(&rcdu->commit.wait);
rcdu->dev = &pdev->dev;
rcdu->info = of_match_device(rcar_du_of_table, rcdu->dev)->data;
ddev = drm_dev_alloc(&rcar_du_driver, &pdev->dev);
if (!ddev)
return -ENOMEM;
drm_dev_set_unique(ddev, dev_name(&pdev->dev));
rcdu->ddev = ddev;
ddev->dev_private = rcdu;
platform_set_drvdata(pdev, rcdu);
/* I/O resources */
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
rcdu->mmio = devm_ioremap_resource(&pdev->dev, mem);
if (IS_ERR(rcdu->mmio)) {
ret = PTR_ERR(rcdu->mmio);
goto error;
}
/* Initialize vertical blanking interrupts handling. Start with vblank
* disabled for all CRTCs.
*/
ret = drm_vblank_init(ddev, (1 << rcdu->info->num_crtcs) - 1);
if (ret < 0) {
dev_err(&pdev->dev, "failed to initialize vblank\n");
goto error;
}
/* DRM/KMS objects */
ret = rcar_du_modeset_init(rcdu);
if (ret < 0) {
dev_err(&pdev->dev, "failed to initialize DRM/KMS (%d)\n", ret);
goto error;
}
ddev->irq_enabled = 1;
/* Register the DRM device with the core and the connectors with
* sysfs.
*/
ret = drm_dev_register(ddev, 0);
if (ret)
goto error;
mutex_lock(&ddev->mode_config.mutex);
drm_for_each_connector(connector, ddev) {
ret = drm_connector_register(connector);
if (ret < 0)
break;
}
static int pl111_amba_probe(struct amba_device *amba_dev,
const struct amba_id *id)
{
struct device *dev = &amba_dev->dev;
struct pl111_drm_dev_private *priv;
struct pl111_variant_data *variant = id->data;
struct drm_device *drm;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
drm = drm_dev_alloc(&pl111_drm_driver, dev);
if (IS_ERR(drm))
return PTR_ERR(drm);
amba_set_drvdata(amba_dev, drm);
priv->drm = drm;
drm->dev_private = priv;
priv->variant = variant;
/*
* The PL110 and PL111 variants have two registers
* swapped: interrupt enable and control. For this reason
* we use offsets that we can change per variant.
*/
if (variant->is_pl110) {
/*
* The ARM Versatile boards are even more special:
* their PrimeCell ID say they are PL110 but the
* control and interrupt enable registers are anyway
* swapped to the PL111 order so they are not following
* the PL110 datasheet.
*/
if (of_machine_is_compatible("arm,versatile-ab") ||
of_machine_is_compatible("arm,versatile-pb")) {
priv->ienb = CLCD_PL111_IENB;
priv->ctrl = CLCD_PL111_CNTL;
} else {
priv->ienb = CLCD_PL110_IENB;
priv->ctrl = CLCD_PL110_CNTL;
}
} else {
priv->ienb = CLCD_PL111_IENB;
priv->ctrl = CLCD_PL111_CNTL;
}
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);
}
/* turn off interrupts before requesting the irq */
writel(0, priv->regs + priv->ienb);
ret = devm_request_irq(dev, amba_dev->irq[0], pl111_irq, 0,
variant->name, priv);
if (ret != 0) {
dev_err(dev, "%s failed irq %d\n", __func__, ret);
return ret;
}
ret = pl111_versatile_init(dev, priv);
if (ret)
goto dev_unref;
ret = pl111_modeset_init(drm);
if (ret != 0)
goto dev_unref;
ret = drm_dev_register(drm, 0);
if (ret < 0)
goto dev_unref;
return 0;
dev_unref:
drm_dev_unref(drm);
return ret;
}
static int pdev_probe(struct platform_device *pdev)
{
const struct soc_device_attribute *soc;
struct omap_drm_private *priv;
struct drm_device *ddev;
unsigned int i;
int ret;
DBG("%s", pdev->name);
if (omapdss_is_initialized() == false)
return -EPROBE_DEFER;
ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret) {
dev_err(&pdev->dev, "Failed to set the DMA mask\n");
return ret;
}
omap_crtc_pre_init();
ret = omap_connect_dssdevs();
if (ret)
goto err_crtc_uninit;
/* Allocate and initialize the driver private structure. */
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
ret = -ENOMEM;
goto err_disconnect_dssdevs;
}
priv->dispc_ops = dispc_get_ops();
soc = soc_device_match(omapdrm_soc_devices);
priv->omaprev = soc ? (unsigned int)soc->data : 0;
priv->wq = alloc_ordered_workqueue("omapdrm", 0);
spin_lock_init(&priv->list_lock);
INIT_LIST_HEAD(&priv->obj_list);
/* Allocate and initialize the DRM device. */
ddev = drm_dev_alloc(&omap_drm_driver, &pdev->dev);
if (IS_ERR(ddev)) {
ret = PTR_ERR(ddev);
goto err_free_priv;
}
ddev->dev_private = priv;
platform_set_drvdata(pdev, ddev);
/* Get memory bandwidth limits */
if (priv->dispc_ops->get_memory_bandwidth_limit)
priv->max_bandwidth =
priv->dispc_ops->get_memory_bandwidth_limit();
omap_gem_init(ddev);
ret = omap_modeset_init(ddev);
if (ret) {
dev_err(&pdev->dev, "omap_modeset_init failed: ret=%d\n", ret);
goto err_free_drm_dev;
}
/* Initialize vblank handling, start with all CRTCs disabled. */
ret = drm_vblank_init(ddev, priv->num_crtcs);
if (ret) {
dev_err(&pdev->dev, "could not init vblank\n");
goto err_cleanup_modeset;
}
for (i = 0; i < priv->num_crtcs; i++)
drm_crtc_vblank_off(priv->crtcs[i]);
priv->fbdev = omap_fbdev_init(ddev);
drm_kms_helper_poll_init(ddev);
omap_modeset_enable_external_hpd();
/*
* Register the DRM device with the core and the connectors with
* sysfs.
*/
ret = drm_dev_register(ddev, 0);
if (ret)
goto err_cleanup_helpers;
return 0;
err_cleanup_helpers:
omap_modeset_disable_external_hpd();
drm_kms_helper_poll_fini(ddev);
if (priv->fbdev)
omap_fbdev_free(ddev);
err_cleanup_modeset:
drm_mode_config_cleanup(ddev);
omap_drm_irq_uninstall(ddev);
err_free_drm_dev:
omap_gem_deinit(ddev);
drm_dev_unref(ddev);
err_free_priv:
destroy_workqueue(priv->wq);
kfree(priv);
err_disconnect_dssdevs:
omap_disconnect_dssdevs();
err_crtc_uninit:
omap_crtc_pre_uninit();
return ret;
}
static int fsl_dcu_drm_probe(struct platform_device *pdev)
{
struct fsl_dcu_drm_device *fsl_dev;
struct drm_device *drm;
struct device *dev = &pdev->dev;
struct resource *res;
void __iomem *base;
struct drm_driver *driver = &fsl_dcu_drm_driver;
const struct of_device_id *id;
int ret;
fsl_dev = devm_kzalloc(dev, sizeof(*fsl_dev), GFP_KERNEL);
if (!fsl_dev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "could not get memory IO resource\n");
return -ENODEV;
}
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base)) {
ret = PTR_ERR(base);
return ret;
}
fsl_dev->irq = platform_get_irq(pdev, 0);
if (fsl_dev->irq < 0) {
dev_err(dev, "failed to get irq\n");
return -ENXIO;
}
fsl_dev->clk = devm_clk_get(dev, "dcu");
if (IS_ERR(fsl_dev->clk)) {
ret = PTR_ERR(fsl_dev->clk);
dev_err(dev, "failed to get dcu clock\n");
return ret;
}
ret = clk_prepare(fsl_dev->clk);
if (ret < 0) {
dev_err(dev, "failed to prepare dcu clk\n");
return ret;
}
ret = clk_enable(fsl_dev->clk);
if (ret < 0) {
dev_err(dev, "failed to enable dcu clk\n");
clk_unprepare(fsl_dev->clk);
return ret;
}
fsl_dev->regmap = devm_regmap_init_mmio(dev, base,
&fsl_dcu_regmap_config);
if (IS_ERR(fsl_dev->regmap)) {
dev_err(dev, "regmap init failed\n");
return PTR_ERR(fsl_dev->regmap);
}
id = of_match_node(fsl_dcu_of_match, pdev->dev.of_node);
if (!id)
return -ENODEV;
fsl_dev->soc = id->data;
drm = drm_dev_alloc(driver, dev);
if (!drm)
return -ENOMEM;
fsl_dev->dev = dev;
fsl_dev->drm = drm;
fsl_dev->np = dev->of_node;
drm->dev_private = fsl_dev;
dev_set_drvdata(dev, fsl_dev);
ret = drm_dev_register(drm, 0);
if (ret < 0)
goto unref;
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name,
driver->major, driver->minor, driver->patchlevel,
driver->date, drm->primary->index);
return 0;
unref:
drm_dev_unref(drm);
return ret;
}
