Hi, On Thursday, January 09, 2014 08:58:12 AM Shaik Ameer Basha wrote: > This patch adds the core functionality for the SCALER driver. > > Signed-off-by: Shaik Ameer Basha <shaik.ameer@xxxxxxxxxxx> > Reviewed-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx> > --- > drivers/media/platform/exynos-scaler/scaler.c | 1231 +++++++++++++++++++++++++ > drivers/media/platform/exynos-scaler/scaler.h | 376 ++++++++ > 2 files changed, 1607 insertions(+) > create mode 100644 drivers/media/platform/exynos-scaler/scaler.c > create mode 100644 drivers/media/platform/exynos-scaler/scaler.h [...] > +static int scaler_probe(struct platform_device *pdev) > +{ > + struct scaler_dev *scaler; > + struct resource *res; > + struct device *dev = &pdev->dev; > + int ret; > + > + if (!dev->of_node) > + return -ENODEV; > + > + scaler = devm_kzalloc(dev, sizeof(*scaler), GFP_KERNEL); > + if (!scaler) > + return -ENOMEM; > + > + scaler->pdev = pdev; > + scaler->variant = scaler_get_variant_data(pdev); > + > + init_waitqueue_head(&scaler->irq_queue); > + spin_lock_init(&scaler->slock); > + mutex_init(&scaler->lock); > + scaler->clock = ERR_PTR(-EINVAL); > + > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > + scaler->regs = devm_request_and_ioremap(dev, res); > + if (!scaler->regs) > + return -ENODEV; > + > + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); > + if (!res) { > + dev_err(dev, "failed to get IRQ resource\n"); > + return -ENXIO; > + } > + > + ret = scaler_clk_get(scaler); > + if (ret < 0) > + return ret; > + > + ret = devm_request_irq(dev, res->start, scaler_irq_handler, > + 0, pdev->name, scaler); > + if (ret < 0) { > + dev_err(dev, "failed to install irq (%d)\n", ret); > + goto err_clk; > + } > + > + platform_set_drvdata(pdev, scaler); > + pm_runtime_enable(dev); > + > + /* Initialize the continious memory allocator */ > + scaler->alloc_ctx = vb2_dma_contig_init_ctx(dev); > + if (IS_ERR(scaler->alloc_ctx)) { > + ret = PTR_ERR(scaler->alloc_ctx); > + goto err_clk; > + } > + > + ret = v4l2_device_register(dev, &scaler->v4l2_dev); > + if (ret < 0) > + goto err_clk; > + > + ret = scaler_register_m2m_device(scaler); > + if (ret < 0) > + goto err_v4l2; > + > + dev_info(dev, "registered successfully\n"); > + return 0; > + > +err_v4l2: > + v4l2_device_unregister(&scaler->v4l2_dev); > +err_clk: > + scaler_clk_put(scaler); vb2_dma_contig_cleanup_ctx() and pm_runtime_disable() calls on failure are missing > + return ret; > +} > + > +static int scaler_remove(struct platform_device *pdev) > +{ > + struct scaler_dev *scaler = platform_get_drvdata(pdev); > + > + scaler_unregister_m2m_device(scaler); > + v4l2_device_unregister(&scaler->v4l2_dev); > + > + vb2_dma_contig_cleanup_ctx(scaler->alloc_ctx); > + pm_runtime_disable(&pdev->dev); > + scaler_clk_put(scaler); > + > + scaler_dbg(scaler, "%s driver unloaded\n", pdev->name); > + return 0; > +} Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html