S5PV210 can be trivially supported by this driver. Only one of its FIMC devices (#2) supports the same scaling values as Exynos4, and it is marked by mainscaler-ext in the DTS (as it is for all of the Exynos4 devices). It's limits are the same as that of id's 0-2 of Exynos4 so we don't even need to change the device id check.

It has been tested with a modified libdrm's test from https://github.com/tobiasjakobi/libdrm/tree/ippv2

Signed-off-by: Jonathan Bakker xc-racer2@live.ca --- drivers/gpu/drm/exynos/exynos_drm_fimc.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c b/drivers/gpu/drm/exynos/exynos_drm_fimc.c index 29ab8be8604c..63e1b8ccb8e9 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimc.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c @@ -89,6 +89,7 @@ struct fimc_scaler { * @regs: memory mapped io registers. * @lock: locking of operations. * @clocks: fimc clocks. + * @num_clocks: number of fimc clocks * @sc: scaler infomations. * @pol: porarity of writeback. * @id: fimc id. @@ -107,6 +108,7 @@ struct fimc_context { void __iomem *regs; spinlock_t lock; struct clk *clocks[FIMC_CLKS_MAX]; + int num_clocks; struct fimc_scaler sc; int id; int irq; @@ -1183,7 +1185,7 @@ static int fimc_setup_clocks(struct fimc_context *ctx) for (i = 0; i < FIMC_CLKS_MAX; i++) ctx->clocks[i] = ERR_PTR(-EINVAL);

- for (i = 0; i < FIMC_CLKS_MAX; i++) { + for (i = 0; i < ctx->num_clocks; i++) { if (i == FIMC_CLK_WB_A || i == FIMC_CLK_WB_B) dev = fimc_dev->parent; else @@ -1210,6 +1212,9 @@ int exynos_drm_check_fimc_device(struct device *dev) { int id = of_alias_get_id(dev->of_node, "fimc");

+ if (!of_property_read_bool(dev->of_node, "samsung,mainscaler-ext")) + return -ENODEV; + if (id >= 0 && (BIT(id) & fimc_mask)) return 0; return -ENODEV; @@ -1277,6 +1282,11 @@ static int fimc_probe(struct platform_device *pdev) ctx->dev = dev; ctx->id = of_alias_get_id(dev->of_node, "fimc");

+ if (of_device_is_compatible(dev->of_node, "samsung,s5pv210-fimc")) + ctx->num_clocks = 2; + else + ctx->num_clocks = FIMC_CLKS_MAX; + /* construct formats/limits array */ num_formats = ARRAY_SIZE(fimc_formats) + ARRAY_SIZE(fimc_tiled_formats); formats = devm_kcalloc(dev, num_formats, sizeof(*formats), @@ -1409,6 +1419,7 @@ static const struct dev_pm_ops fimc_pm_ops = { static const struct of_device_id fimc_of_match[] = { { .compatible = "samsung,exynos4210-fimc" }, { .compatible = "samsung,exynos4212-fimc" }, + { .compatible = "samsung,s5pv210-fimc" }, { }, }; MODULE_DEVICE_TABLE(of, fimc_of_match);