From eea034af90c64802fd747a9dc534c26a7ebe7754 Mon Sep 17 00:00:00 2001 From: Jernej Skrabec Date: Wed, 14 Feb 2018 21:08:59 +0100 Subject: [PATCH] drm/bridge/synopsys: dw-hdmi: don't clobber drvdata dw_hdmi shouldn't set drvdata since some drivers might need to store it's own data there. Rework dw_hdmi in a way to return struct dw_hdmi instead to store it in drvdata. This way drivers are responsible to store and pass structure when needed. Idea was taken from the following commit: 8242ecbd597d ("drm/bridge/synopsys: stop clobbering drvdata") Cc: p.zabel@pengutronix.de Cc: Laurent.pinchart@ideasonboard.com Cc: hjc@rock-chips.com Acked-by: Heiko Stuebner Acked-by: Neil Armstrong Reviewed-by: Archit Taneja Tested-by: Heiko Stuebner Signed-off-by: Jernej Skrabec Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20180214200906.31509-6-jernej.skrabec@siol.net --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 31 ++++++++++++----------------- drivers/gpu/drm/imx/dw_hdmi-imx.c | 13 +++++++++--- drivers/gpu/drm/meson/meson_dw_hdmi.c | 14 +++++++++---- drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c | 12 +++++++++-- drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 13 +++++++++--- include/drm/bridge/dw_hdmi.h | 13 ++++++------ 6 files changed, 60 insertions(+), 36 deletions(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index 7d80f4b..f980239 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -2543,8 +2543,6 @@ __dw_hdmi_probe(struct platform_device *pdev, if (hdmi->i2c) dw_hdmi_i2c_init(hdmi); - platform_set_drvdata(pdev, hdmi); - return hdmi; err_iahb: @@ -2594,25 +2592,23 @@ static void __dw_hdmi_remove(struct dw_hdmi *hdmi) /* ----------------------------------------------------------------------------- * Probe/remove API, used from platforms based on the DRM bridge API. */ -int dw_hdmi_probe(struct platform_device *pdev, - const struct dw_hdmi_plat_data *plat_data) +struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev, + const struct dw_hdmi_plat_data *plat_data) { struct dw_hdmi *hdmi; hdmi = __dw_hdmi_probe(pdev, plat_data); if (IS_ERR(hdmi)) - return PTR_ERR(hdmi); + return hdmi; drm_bridge_add(&hdmi->bridge); - return 0; + return hdmi; } EXPORT_SYMBOL_GPL(dw_hdmi_probe); -void dw_hdmi_remove(struct platform_device *pdev) +void dw_hdmi_remove(struct dw_hdmi *hdmi) { - struct dw_hdmi *hdmi = platform_get_drvdata(pdev); - drm_bridge_remove(&hdmi->bridge); __dw_hdmi_remove(hdmi); @@ -2622,31 +2618,30 @@ EXPORT_SYMBOL_GPL(dw_hdmi_remove); /* ----------------------------------------------------------------------------- * Bind/unbind API, used from platforms based on the component framework. */ -int dw_hdmi_bind(struct platform_device *pdev, struct drm_encoder *encoder, - const struct dw_hdmi_plat_data *plat_data) +struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev, + struct drm_encoder *encoder, + const struct dw_hdmi_plat_data *plat_data) { struct dw_hdmi *hdmi; int ret; hdmi = __dw_hdmi_probe(pdev, plat_data); if (IS_ERR(hdmi)) - return PTR_ERR(hdmi); + return hdmi; ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL); if (ret) { - dw_hdmi_remove(pdev); + dw_hdmi_remove(hdmi); DRM_ERROR("Failed to initialize bridge with drm\n"); - return ret; + return ERR_PTR(ret); } - return 0; + return hdmi; } EXPORT_SYMBOL_GPL(dw_hdmi_bind); -void dw_hdmi_unbind(struct device *dev) +void dw_hdmi_unbind(struct dw_hdmi *hdmi) { - struct dw_hdmi *hdmi = dev_get_drvdata(dev); - __dw_hdmi_remove(hdmi); } EXPORT_SYMBOL_GPL(dw_hdmi_unbind); diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c index b62763a..fe6becd 100644 --- a/drivers/gpu/drm/imx/dw_hdmi-imx.c +++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c @@ -25,6 +25,7 @@ struct imx_hdmi { struct device *dev; struct drm_encoder encoder; + struct dw_hdmi *hdmi; struct regmap *regmap; }; @@ -239,14 +240,18 @@ static int dw_hdmi_imx_bind(struct device *dev, struct device *master, drm_encoder_init(drm, encoder, &dw_hdmi_imx_encoder_funcs, DRM_MODE_ENCODER_TMDS, NULL); - ret = dw_hdmi_bind(pdev, encoder, plat_data); + platform_set_drvdata(pdev, hdmi); + + hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data); /* * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(), * which would have called the encoder cleanup. Do it manually. */ - if (ret) + if (IS_ERR(hdmi->hdmi)) { + ret = PTR_ERR(hdmi->hdmi); drm_encoder_cleanup(encoder); + } return ret; } @@ -254,7 +259,9 @@ static int dw_hdmi_imx_bind(struct device *dev, struct device *master, static void dw_hdmi_imx_unbind(struct device *dev, struct device *master, void *data) { - return dw_hdmi_unbind(dev); + struct imx_hdmi *hdmi = dev_get_drvdata(dev); + + dw_hdmi_unbind(hdmi->hdmi); } static const struct component_ops dw_hdmi_imx_ops = { diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c index e8c3ef8..d49af1731 100644 --- a/drivers/gpu/drm/meson/meson_dw_hdmi.c +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c @@ -140,6 +140,7 @@ struct meson_dw_hdmi { struct clk *venci_clk; struct regulator *hdmi_supply; u32 irq_stat; + struct dw_hdmi *hdmi; }; #define encoder_to_meson_dw_hdmi(x) \ container_of(x, struct meson_dw_hdmi, encoder) @@ -878,9 +879,12 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master, dw_plat_data->input_bus_format = MEDIA_BUS_FMT_YUV8_1X24; dw_plat_data->input_bus_encoding = V4L2_YCBCR_ENC_709; - ret = dw_hdmi_bind(pdev, encoder, &meson_dw_hdmi->dw_plat_data); - if (ret) - return ret; + platform_set_drvdata(pdev, meson_dw_hdmi); + + meson_dw_hdmi->hdmi = dw_hdmi_bind(pdev, encoder, + &meson_dw_hdmi->dw_plat_data); + if (IS_ERR(meson_dw_hdmi->hdmi)) + return PTR_ERR(meson_dw_hdmi->hdmi); DRM_DEBUG_DRIVER("HDMI controller initialized\n"); @@ -890,7 +894,9 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master, static void meson_dw_hdmi_unbind(struct device *dev, struct device *master, void *data) { - dw_hdmi_unbind(dev); + struct meson_dw_hdmi *meson_dw_hdmi = dev_get_drvdata(dev); + + dw_hdmi_unbind(meson_dw_hdmi->hdmi); } static const struct component_ops meson_dw_hdmi_ops = { diff --git a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c index dc85b53..3bebc68 100644 --- a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c +++ b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c @@ -68,12 +68,20 @@ static const struct dw_hdmi_plat_data rcar_dw_hdmi_plat_data = { static int rcar_dw_hdmi_probe(struct platform_device *pdev) { - return dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data); + struct dw_hdmi *hdmi; + + hdmi = dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data); + if (IS_ERR(hdmi)) + return PTR_ERR(hdmi); + + platform_set_drvdata(pdev, hdmi); } static int rcar_dw_hdmi_remove(struct platform_device *pdev) { - dw_hdmi_remove(pdev); + struct dw_hdmi *hdmi = platform_get_drvdata(dev); + + dw_hdmi_remove(hdmi); return 0; } diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index 1eb02a8..3574b0a 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c @@ -48,6 +48,7 @@ struct rockchip_hdmi { const struct rockchip_hdmi_chip_data *chip_data; struct clk *vpll_clk; struct clk *grf_clk; + struct dw_hdmi *hdmi; }; #define to_rockchip_hdmi(x) container_of(x, struct rockchip_hdmi, x) @@ -377,14 +378,18 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs, DRM_MODE_ENCODER_TMDS, NULL); - ret = dw_hdmi_bind(pdev, encoder, plat_data); + platform_set_drvdata(pdev, hdmi); + + hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data); /* * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(), * which would have called the encoder cleanup. Do it manually. */ - if (ret) + if (IS_ERR(hdmi->hdmi)) { + ret = PTR_ERR(hdmi->hdmi); drm_encoder_cleanup(encoder); + } return ret; } @@ -392,7 +397,9 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master, void *data) { - return dw_hdmi_unbind(dev); + struct rockchip_hdmi *hdmi = dev_get_drvdata(dev); + + dw_hdmi_unbind(hdmi->hdmi); } static const struct component_ops dw_hdmi_rockchip_ops = { diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index f3f3f0e..dd2a8cf 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -143,12 +143,13 @@ struct dw_hdmi_plat_data { unsigned long mpixelclock); }; -int dw_hdmi_probe(struct platform_device *pdev, - const struct dw_hdmi_plat_data *plat_data); -void dw_hdmi_remove(struct platform_device *pdev); -void dw_hdmi_unbind(struct device *dev); -int dw_hdmi_bind(struct platform_device *pdev, struct drm_encoder *encoder, - const struct dw_hdmi_plat_data *plat_data); +struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev, + const struct dw_hdmi_plat_data *plat_data); +void dw_hdmi_remove(struct dw_hdmi *hdmi); +void dw_hdmi_unbind(struct dw_hdmi *hdmi); +struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev, + struct drm_encoder *encoder, + const struct dw_hdmi_plat_data *plat_data); void dw_hdmi_setup_rx_sense(struct device *dev, bool hpd, bool rx_sense); -- 2.7.4