drm/msm/dpu: constify struct dpu_mdss_cfg

Mark struct dpu_mdss_cfg instance as a const pointer. This is mostly a
preparation for the next patch.
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/488164/
Link: https://lore.kernel.org/r/20220602202447.1755115-7-dmitry.baryshkov@linaro.orgSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c

@@ -468,7 +468,7 @@ static const struct file_operations dpu_core_perf_mode_fops = {
 int dpu_core_perf_debugfs_init(struct dpu_kms *dpu_kms, struct dentry *parent)
 {
 	struct dpu_core_perf *perf = &dpu_kms->perf;
-	struct dpu_mdss_cfg *catalog = perf->catalog;
+	const struct dpu_mdss_cfg *catalog = perf->catalog;
 	struct dentry *entry;
 
 	entry = debugfs_create_dir("core_perf", parent);
@@ -517,7 +517,7 @@ void dpu_core_perf_destroy(struct dpu_core_perf *perf)
 
 int dpu_core_perf_init(struct dpu_core_perf *perf,
 		struct drm_device *dev,
-		struct dpu_mdss_cfg *catalog,
+		const struct dpu_mdss_cfg *catalog,
 		struct clk *core_clk)
 {
 	perf->dev = dev;

drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h

@@ -68,7 +68,7 @@ struct dpu_core_perf_tune {
 struct dpu_core_perf {
 	struct drm_device *dev;
 	struct dentry *debugfs_root;
-	struct dpu_mdss_cfg *catalog;
+	const struct dpu_mdss_cfg *catalog;
 	struct clk *core_clk;
 	u64 core_clk_rate;
 	u64 max_core_clk_rate;
@@ -119,7 +119,7 @@ void dpu_core_perf_destroy(struct dpu_core_perf *perf);
  */
 int dpu_core_perf_init(struct dpu_core_perf *perf,
 		struct drm_device *dev,
-		struct dpu_mdss_cfg *catalog,
+		const struct dpu_mdss_cfg *catalog,
 		struct clk *core_clk);
 
 struct dpu_kms;

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c

@@ -1205,7 +1205,7 @@ static void dpu_encoder_virt_disable(struct drm_encoder *drm_enc)
 	mutex_unlock(&dpu_enc->enc_lock);
 }
 
-static enum dpu_intf dpu_encoder_get_intf(struct dpu_mdss_cfg *catalog,
+static enum dpu_intf dpu_encoder_get_intf(const struct dpu_mdss_cfg *catalog,
 		enum dpu_intf_type type, u32 controller_id)
 {
 	int i = 0;
@@ -1222,7 +1222,7 @@ static enum dpu_intf dpu_encoder_get_intf(struct dpu_mdss_cfg *catalog,
 	return INTF_MAX;
 }
 
-static enum dpu_wb dpu_encoder_get_wb(struct dpu_mdss_cfg *catalog,
+static enum dpu_wb dpu_encoder_get_wb(const struct dpu_mdss_cfg *catalog,
 		enum dpu_intf_type type, u32 controller_id)
 {
 	int i = 0;

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c

@@ -103,7 +103,7 @@ static void dpu_encoder_phys_wb_set_qos(struct dpu_encoder_phys *phys_enc)
 {
 	struct dpu_hw_wb *hw_wb;
 	struct dpu_hw_wb_qos_cfg qos_cfg;
-	struct dpu_mdss_cfg *catalog;
+	const struct dpu_mdss_cfg *catalog;
 	const struct dpu_qos_lut_tbl *qos_lut_tb;
 
 	if (!phys_enc || !phys_enc->dpu_kms || !phys_enc->dpu_kms->catalog) {

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c

@@ -1987,17 +1987,12 @@ static const struct dpu_mdss_hw_cfg_handler cfg_handler[] = {
 	{ .hw_rev = DPU_HW_VER_720, .cfg_init = sc7280_cfg_init},
 };
 
-void dpu_hw_catalog_deinit(struct dpu_mdss_cfg *dpu_cfg)
-{
-	kfree(dpu_cfg);
-}
-
-struct dpu_mdss_cfg *dpu_hw_catalog_init(u32 hw_rev)
+const struct dpu_mdss_cfg *dpu_hw_catalog_init(struct device *dev, u32 hw_rev)
 {
 	int i;
 	struct dpu_mdss_cfg *dpu_cfg;
 
-	dpu_cfg = kzalloc(sizeof(*dpu_cfg), GFP_KERNEL);
+	dpu_cfg = devm_kzalloc(dev, sizeof(*dpu_cfg), GFP_KERNEL);
 	if (!dpu_cfg)
 		return ERR_PTR(-ENOMEM);
 
@@ -2009,7 +2004,7 @@ struct dpu_mdss_cfg *dpu_hw_catalog_init(u32 hw_rev)
 	}
 
 	DPU_ERROR("unsupported chipset id:%X\n", hw_rev);
-	dpu_hw_catalog_deinit(dpu_cfg);
+
 	return ERR_PTR(-ENODEV);
 }
 

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h

@@ -884,16 +884,11 @@ struct dpu_mdss_hw_cfg_handler {
 /**
  * dpu_hw_catalog_init - dpu hardware catalog init API retrieves
  * hardcoded target specific catalog information in config structure
+ * @dev:          DPU device
  * @hw_rev:       caller needs provide the hardware revision.
  *
  * Return: dpu config structure
  */
-struct dpu_mdss_cfg *dpu_hw_catalog_init(u32 hw_rev);
-
-/**
- * dpu_hw_catalog_deinit - dpu hardware catalog cleanup
- * @dpu_cfg:      pointer returned from init function
- */
-void dpu_hw_catalog_deinit(struct dpu_mdss_cfg *dpu_cfg);
+const struct dpu_mdss_cfg *dpu_hw_catalog_init(struct device *dev, u32 hw_rev);
 
 #endif /* _DPU_HW_CATALOG_H */

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c

@@ -158,7 +158,7 @@ static void dpu_hw_dsc_config_thresh(struct dpu_hw_dsc *hw_dsc,
 }
 
 static struct dpu_dsc_cfg *_dsc_offset(enum dpu_dsc dsc,
-				       struct dpu_mdss_cfg *m,
+				       const struct dpu_mdss_cfg *m,
 				       void __iomem *addr,
 				       struct dpu_hw_blk_reg_map *b)
 {
@@ -186,7 +186,7 @@ static void _setup_dsc_ops(struct dpu_hw_dsc_ops *ops,
 };
 
 struct dpu_hw_dsc *dpu_hw_dsc_init(enum dpu_dsc idx, void __iomem *addr,
-				   struct dpu_mdss_cfg *m)
+				   const struct dpu_mdss_cfg *m)
 {
 	struct dpu_hw_dsc *c;
 	struct dpu_dsc_cfg *cfg;

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h

@@ -64,7 +64,7 @@ struct dpu_hw_dsc {
  * Returns: Error code or allocated dpu_hw_dsc context
  */
 struct dpu_hw_dsc *dpu_hw_dsc_init(enum dpu_dsc idx, void __iomem *addr,
-				   struct dpu_mdss_cfg *m);
+				   const struct dpu_mdss_cfg *m);
 
 /**
  * dpu_hw_dsc_destroy - destroys dsc driver context

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c

@@ -398,7 +398,7 @@ u32 dpu_core_irq_read(struct dpu_kms *dpu_kms, int irq_idx)
 	return intr_status;
 }
 
-static void __intr_offset(struct dpu_mdss_cfg *m,
+static void __intr_offset(const struct dpu_mdss_cfg *m,
 		void __iomem *addr, struct dpu_hw_blk_reg_map *hw)
 {
 	hw->base_off = addr;
@@ -406,7 +406,7 @@ static void __intr_offset(struct dpu_mdss_cfg *m,
 }
 
 struct dpu_hw_intr *dpu_hw_intr_init(void __iomem *addr,
-		struct dpu_mdss_cfg *m)
+		const struct dpu_mdss_cfg *m)
 {
 	struct dpu_hw_intr *intr;
 	int nirq = MDP_INTR_MAX * 32;

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h

@@ -67,7 +67,7 @@ struct dpu_hw_intr {
  * @m :   pointer to mdss catalog data
  */
 struct dpu_hw_intr *dpu_hw_intr_init(void __iomem *addr,
-		struct dpu_mdss_cfg *m);
+		const struct dpu_mdss_cfg *m);
 
 /**
  * dpu_hw_intr_destroy(): Cleanup interrutps hw object

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c

@@ -761,7 +761,7 @@ int _dpu_hw_sspp_init_debugfs(struct dpu_hw_pipe *hw_pipe, struct dpu_kms *kms,
 
 static const struct dpu_sspp_cfg *_sspp_offset(enum dpu_sspp sspp,
 		void __iomem *addr,
-		struct dpu_mdss_cfg *catalog,
+		const struct dpu_mdss_cfg *catalog,
 		struct dpu_hw_blk_reg_map *b)
 {
 	int i;
@@ -782,7 +782,7 @@ static const struct dpu_sspp_cfg *_sspp_offset(enum dpu_sspp sspp,
 }
 
 struct dpu_hw_pipe *dpu_hw_sspp_init(enum dpu_sspp idx,
-		void __iomem *addr, struct dpu_mdss_cfg *catalog,
+		void __iomem *addr, const struct dpu_mdss_cfg *catalog,
 		bool is_virtual_pipe)
 {
 	struct dpu_hw_pipe *hw_pipe;

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h

@@ -360,7 +360,7 @@ struct dpu_hw_sspp_ops {
 struct dpu_hw_pipe {
 	struct dpu_hw_blk base;
 	struct dpu_hw_blk_reg_map hw;
-	struct dpu_mdss_cfg *catalog;
+	const struct dpu_mdss_cfg *catalog;
 	const struct dpu_mdp_cfg *mdp;
 
 	/* Pipe */
@@ -381,7 +381,7 @@ struct dpu_kms;
  * @is_virtual_pipe: is this pipe virtual pipe
  */
 struct dpu_hw_pipe *dpu_hw_sspp_init(enum dpu_sspp idx,
-		void __iomem *addr, struct dpu_mdss_cfg *catalog,
+		void __iomem *addr, const struct dpu_mdss_cfg *catalog,
 		bool is_virtual_pipe);
 
 /**

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c

@@ -745,7 +745,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 	unsigned int num_encoders;
 
 	struct msm_drm_private *priv;
-	struct dpu_mdss_cfg *catalog;
+	const struct dpu_mdss_cfg *catalog;
 
 	int primary_planes_idx = 0, cursor_planes_idx = 0, i, ret;
 	int max_crtc_count;
@@ -842,8 +842,6 @@ static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms)
 		dpu_rm_destroy(&dpu_kms->rm);
 	dpu_kms->rm_init = false;
 
-	if (dpu_kms->catalog)
-		dpu_hw_catalog_deinit(dpu_kms->catalog);
 	dpu_kms->catalog = NULL;
 
 	if (dpu_kms->vbif[VBIF_NRT])
@@ -905,7 +903,7 @@ static void dpu_kms_mdp_snapshot(struct msm_disp_state *disp_state, struct msm_k
 {
 	int i;
 	struct dpu_kms *dpu_kms;
-	struct dpu_mdss_cfg *cat;
+	const struct dpu_mdss_cfg *cat;
 	struct dpu_hw_mdp *top;
 
 	dpu_kms = to_dpu_kms(kms);
@@ -1095,7 +1093,7 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
 
 	pr_info("dpu hardware revision:0x%x\n", dpu_kms->core_rev);
 
-	dpu_kms->catalog = dpu_hw_catalog_init(dpu_kms->core_rev);
+	dpu_kms->catalog = dpu_hw_catalog_init(dev->dev, dpu_kms->core_rev);
 	if (IS_ERR_OR_NULL(dpu_kms->catalog)) {
 		rc = PTR_ERR(dpu_kms->catalog);
 		if (!dpu_kms->catalog)

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h

@@ -69,7 +69,7 @@ struct dpu_kms {
 	struct msm_kms base;
 	struct drm_device *dev;
 	int core_rev;
-	struct dpu_mdss_cfg *catalog;
+	const struct dpu_mdss_cfg *catalog;
 
 	/* io/register spaces: */
 	void __iomem *mmio, *vbif[VBIF_MAX], *reg_dma;

drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c

@@ -106,7 +106,7 @@ struct dpu_plane {
 	bool is_rt_pipe;
 	bool is_virtual;
 	struct list_head mplane_list;
-	struct dpu_mdss_cfg *catalog;
+	const struct dpu_mdss_cfg *catalog;
 };
 
 static const uint64_t supported_format_modifiers[] = {

drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c

@@ -95,7 +95,7 @@ int dpu_rm_destroy(struct dpu_rm *rm)
 }
 
 int dpu_rm_init(struct dpu_rm *rm,
-		struct dpu_mdss_cfg *cat,
+		const struct dpu_mdss_cfg *cat,
 		void __iomem *mmio)
 {
 	int rc, i;

drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h

@@ -42,7 +42,7 @@ struct dpu_rm {
  * @Return: 0 on Success otherwise -ERROR
  */
 int dpu_rm_init(struct dpu_rm *rm,
-		struct dpu_mdss_cfg *cat,
+		const struct dpu_mdss_cfg *cat,
 		void __iomem *mmio);
 
 /**