From 43774b0eed5612a8830b82cb7122beb6d05b5ac5 Mon Sep 17 00:00:00 2001 From: Xu YiPing Date: Tue, 20 Aug 2019 23:06:09 +0000 Subject: [PATCH] drm: kirin: Dynamically allocate the hw_ctx As part of refactoring the kirin driver to better support different hardware revisions, this patch modifies the initialization function to dynamically allocate the ade_hw_ctx structure previously kept as part of struct ade_data. This is done so that later we can have the hw_ctx point to hardware revision specific ctx structures. Cc: Rongrong Zou Cc: Xinliang Liu Cc: David Airlie Cc: Daniel Vetter Cc: dri-devel Cc: Sam Ravnborg Acked-by: Xinliang Liu Reviewed-by: Sam Ravnborg Signed-off-by: Xu YiPing [jstultz: reworded commit message] Signed-off-by: John Stultz Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20190820230626.23253-9-john.stultz@linaro.org --- .../gpu/drm/hisilicon/kirin/kirin_drm_ade.c | 39 ++++++++++++------- 1 file changed, 24 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c index fce374ec69e8..ecb507985fea 100644 --- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c @@ -72,7 +72,7 @@ struct kirin_plane { struct ade_data { struct kirin_crtc crtc; struct kirin_plane planes[ADE_CH_NUM]; - struct ade_hw_ctx ctx; + struct ade_hw_ctx *hw_ctx; }; /* ade-format info: */ @@ -951,55 +951,62 @@ static int ade_plane_init(struct drm_device *dev, struct kirin_plane *kplane, return 0; } -static int ade_dts_parse(struct platform_device *pdev, struct ade_hw_ctx *ctx) +static void *ade_hw_ctx_alloc(struct platform_device *pdev) { struct resource *res; struct device *dev = &pdev->dev; struct device_node *np = pdev->dev.of_node; + struct ade_hw_ctx *ctx = NULL; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) { + DRM_ERROR("failed to alloc ade_hw_ctx\n"); + return ERR_PTR(-ENOMEM); + } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ctx->base = devm_ioremap_resource(dev, res); if (IS_ERR(ctx->base)) { DRM_ERROR("failed to remap ade io base\n"); - return PTR_ERR(ctx->base); + return ERR_PTR(-EIO); } ctx->reset = devm_reset_control_get(dev, NULL); if (IS_ERR(ctx->reset)) - return PTR_ERR(ctx->reset); + return ERR_PTR(-ENODEV); ctx->noc_regmap = syscon_regmap_lookup_by_phandle(np, "hisilicon,noc-syscon"); if (IS_ERR(ctx->noc_regmap)) { DRM_ERROR("failed to get noc regmap\n"); - return PTR_ERR(ctx->noc_regmap); + return ERR_PTR(-ENODEV); } ctx->irq = platform_get_irq(pdev, 0); if (ctx->irq < 0) { DRM_ERROR("failed to get irq\n"); - return -ENODEV; + return ERR_PTR(-ENODEV); } ctx->ade_core_clk = devm_clk_get(dev, "clk_ade_core"); if (IS_ERR(ctx->ade_core_clk)) { DRM_ERROR("failed to parse clk ADE_CORE\n"); - return PTR_ERR(ctx->ade_core_clk); + return ERR_PTR(-ENODEV); } ctx->media_noc_clk = devm_clk_get(dev, "clk_codec_jpeg"); if (IS_ERR(ctx->media_noc_clk)) { DRM_ERROR("failed to parse clk CODEC_JPEG\n"); - return PTR_ERR(ctx->media_noc_clk); + return ERR_PTR(-ENODEV); } ctx->ade_pix_clk = devm_clk_get(dev, "clk_ade_pix"); if (IS_ERR(ctx->ade_pix_clk)) { DRM_ERROR("failed to parse clk ADE_PIX\n"); - return PTR_ERR(ctx->ade_pix_clk); + return ERR_PTR(-ENODEV); } - return 0; + return ctx; } static int ade_drm_init(struct platform_device *pdev) @@ -1020,14 +1027,16 @@ static int ade_drm_init(struct platform_device *pdev) } platform_set_drvdata(pdev, ade); - ctx = &ade->ctx; + ctx = ade_hw_ctx_alloc(pdev); + if (IS_ERR(ctx)) { + DRM_ERROR("failed to initialize kirin_priv hw ctx\n"); + return -EINVAL; + } + ade->hw_ctx = ctx; + kcrtc = &ade->crtc; kcrtc->hw_ctx = ctx; - ret = ade_dts_parse(pdev, ctx); - if (ret) - return ret; - /* * plane init * TODO: Now only support primary plane, overlay planes -- 2.30.2