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charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260106-feature_tilcdc-v3-17-9bad0f742164@bootlin.com> References: <20260106-feature_tilcdc-v3-0-9bad0f742164@bootlin.com> In-Reply-To: <20260106-feature_tilcdc-v3-0-9bad0f742164@bootlin.com> To: Jyri Sarha , Tomi Valkeinen , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Russell King , Bartosz Golaszewski , Tony Lindgren , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec Cc: Markus Schneider-Pargmann , Bajjuri Praneeth , Luca Ceresoli , Louis Chauvet , Thomas Petazzoni , Miguel Gazquez , Herve Codina , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, "Kory Maincent (TI.com)" X-Mailer: b4 0.14.3 X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260106_174433_604674_7483E99D X-CRM114-Status: GOOD ( 18.65 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The DRM core documentation recommends against using dev_private: "Instead of using this pointer it is recommended that drivers use embed the struct &drm_device in their larger per-device structure." This patch refactors the tilcdc driver to follow this recommendation by embedding struct drm_device within struct tilcdc_drm_private and replacing all dev->dev_private accesses with the ddev_to_tilcdc_priv() helper macro that uses container_of(). This change aligns the driver with modern DRM best practices. Reviewed-by: Luca Ceresoli Signed-off-by: Kory Maincent (TI.com) --- drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 28 ++++++++++++++-------------- drivers/gpu/drm/tilcdc/tilcdc_drv.h | 2 ++ drivers/gpu/drm/tilcdc/tilcdc_encoder.c | 4 ++-- drivers/gpu/drm/tilcdc/tilcdc_plane.c | 2 +- drivers/gpu/drm/tilcdc/tilcdc_regs.h | 8 ++++---- 5 files changed, 23 insertions(+), 21 deletions(-) diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c index 5b8aba0765f9b..0bd99a2efeeb4 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c @@ -59,7 +59,7 @@ struct tilcdc_crtc { static void set_scanout(struct drm_crtc *crtc, struct drm_framebuffer *fb) { struct drm_device *dev = crtc->dev; - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); struct drm_gem_dma_object *gem; dma_addr_t start, end; u64 dma_base_and_ceiling; @@ -94,7 +94,7 @@ static void tilcdc_crtc_load_palette(struct drm_crtc *crtc) { struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); struct drm_device *dev = crtc->dev; - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); int ret; reinit_completion(&tilcdc_crtc->palette_loaded); @@ -136,7 +136,7 @@ static void tilcdc_crtc_load_palette(struct drm_crtc *crtc) static void tilcdc_crtc_enable_irqs(struct drm_device *dev) { - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); tilcdc_clear_irqstatus(dev, 0xffffffff); @@ -153,7 +153,7 @@ static void tilcdc_crtc_enable_irqs(struct drm_device *dev) static void tilcdc_crtc_disable_irqs(struct drm_device *dev) { - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); /* disable irqs that we might have enabled: */ if (priv->rev == 1) { @@ -173,7 +173,7 @@ static void tilcdc_crtc_disable_irqs(struct drm_device *dev) static void reset(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); if (priv->rev != 2) return; @@ -198,7 +198,7 @@ static unsigned int tilcdc_pclk_diff(unsigned long rate, static void tilcdc_crtc_set_clk(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); unsigned long clk_rate, real_pclk_rate, pclk_rate; unsigned int clkdiv; @@ -270,7 +270,7 @@ static void tilcdc_crtc_set_mode(struct drm_crtc *crtc) { struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); struct drm_device *dev = crtc->dev; - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); uint32_t reg, hbp, hfp, hsw, vbp, vfp, vsw; struct drm_display_mode *mode = &crtc->state->adjusted_mode; struct drm_framebuffer *fb = crtc->primary->state->fb; @@ -557,7 +557,7 @@ static void tilcdc_crtc_recover_work(struct work_struct *work) void tilcdc_crtc_destroy(struct drm_crtc *crtc) { - struct tilcdc_drm_private *priv = crtc->dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(crtc->dev); tilcdc_crtc_shutdown(crtc); @@ -647,7 +647,7 @@ static int tilcdc_crtc_enable_vblank(struct drm_crtc *crtc) { struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); struct drm_device *dev = crtc->dev; - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); unsigned long flags; spin_lock_irqsave(&tilcdc_crtc->irq_lock, flags); @@ -670,7 +670,7 @@ static void tilcdc_crtc_disable_vblank(struct drm_crtc *crtc) { struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); struct drm_device *dev = crtc->dev; - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); unsigned long flags; spin_lock_irqsave(&tilcdc_crtc->irq_lock, flags); @@ -728,7 +728,7 @@ static enum drm_mode_status tilcdc_crtc_mode_valid(struct drm_crtc *crtc, const struct drm_display_mode *mode) { - struct tilcdc_drm_private *priv = crtc->dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(crtc->dev); unsigned int bandwidth; uint32_t hbp, hfp, hsw, vbp, vfp, vsw; @@ -826,7 +826,7 @@ static const struct drm_crtc_helper_funcs tilcdc_crtc_helper_funcs = { void tilcdc_crtc_update_clk(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); drm_modeset_lock(&crtc->mutex, NULL); @@ -850,7 +850,7 @@ irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc) { struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); struct drm_device *dev = crtc->dev; - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); uint32_t stat, reg; stat = tilcdc_read_irqstatus(dev); @@ -958,7 +958,7 @@ irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc) int tilcdc_crtc_create(struct drm_device *dev) { - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); struct tilcdc_crtc *tilcdc_crtc; struct drm_crtc *crtc; int ret; diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.h b/drivers/gpu/drm/tilcdc/tilcdc_drv.h index e3d04a3eb25b4..c69e279a2539d 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.h +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.h @@ -85,6 +85,8 @@ struct tilcdc_drm_private { #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) +#define ddev_to_tilcdc_priv(x) container_of(x, struct tilcdc_drm_private, ddev) + int tilcdc_crtc_create(struct drm_device *dev); irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc); void tilcdc_crtc_update_clk(struct drm_crtc *crtc); diff --git a/drivers/gpu/drm/tilcdc/tilcdc_encoder.c b/drivers/gpu/drm/tilcdc/tilcdc_encoder.c index b1c7b2257df30..d42be3e16c536 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_encoder.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_encoder.c @@ -34,7 +34,7 @@ struct drm_connector *tilcdc_encoder_find_connector(struct drm_device *ddev, static int tilcdc_attach_bridge(struct drm_device *ddev, struct drm_bridge *bridge) { - struct tilcdc_drm_private *priv = ddev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(ddev); int ret; priv->encoder->possible_crtcs = BIT(0); @@ -52,7 +52,7 @@ int tilcdc_attach_bridge(struct drm_device *ddev, struct drm_bridge *bridge) int tilcdc_encoder_create(struct drm_device *ddev) { - struct tilcdc_drm_private *priv = ddev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(ddev); struct drm_bridge *bridge; struct drm_panel *panel; int ret; diff --git a/drivers/gpu/drm/tilcdc/tilcdc_plane.c b/drivers/gpu/drm/tilcdc/tilcdc_plane.c index aa72ca679598b..a77a5b22ebd96 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_plane.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_plane.c @@ -101,7 +101,7 @@ static const struct drm_plane_helper_funcs plane_helper_funcs = { int tilcdc_plane_init(struct drm_device *dev, struct drm_plane *plane) { - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); int ret; ret = drm_universal_plane_init(dev, plane, 1, &tilcdc_plane_funcs, diff --git a/drivers/gpu/drm/tilcdc/tilcdc_regs.h b/drivers/gpu/drm/tilcdc/tilcdc_regs.h index f90e2dc3457cd..26ebaf1e0f70f 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_regs.h +++ b/drivers/gpu/drm/tilcdc/tilcdc_regs.h @@ -113,13 +113,13 @@ static inline void tilcdc_write(struct drm_device *dev, u32 reg, u32 data) { - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); iowrite32(data, priv->mmio + reg); } static inline void tilcdc_write64(struct drm_device *dev, u32 reg, u64 data) { - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); volatile void __iomem *addr = priv->mmio + reg; #if defined(iowrite64) && !defined(iowrite64_is_nonatomic) @@ -133,7 +133,7 @@ static inline void tilcdc_write64(struct drm_device *dev, u32 reg, u64 data) static inline u32 tilcdc_read(struct drm_device *dev, u32 reg) { - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); return ioread32(priv->mmio + reg); } @@ -156,7 +156,7 @@ static inline void tilcdc_clear(struct drm_device *dev, u32 reg, u32 mask) /* the register to read/clear irqstatus differs between v1 and v2 of the IP */ static inline u32 tilcdc_irqstatus_reg(struct drm_device *dev) { - struct tilcdc_drm_private *priv = dev->dev_private; + struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(dev); return (priv->rev == 2) ? LCDC_MASKED_STAT_REG : LCDC_STAT_REG; } -- 2.43.0