drm/ast: Support device quirks

Define struct ast_device_quirks and add an instance for each hardware
generation. The type will provide information about per-gen constants
and oddities.

Signed-off-by: Thomas Zimmermann <[e-mail]>
Reviewed-by: Jocelyn Falempe <[e-mail]>>
Link: https://lore.kernel.org/r/[e-mail]

drivers/gpu/drm/ast/ast_2000.c

···
 	__ast_device_set_tx_chip(ast, tx_chip);
 }
 
+static const struct ast_device_quirks ast_2000_device_quirks = {
+};
+
 struct drm_device *ast_2000_device_create(struct pci_dev *pdev,
 					  const struct drm_driver *drv,
 					  enum ast_chip chip,
···
 		return ERR_CAST(ast);
 	dev = &ast->base;
 
-	ast_device_init(ast, chip, config_mode, regs, ioregs);
+	ast_device_init(ast, chip, config_mode, regs, ioregs, &ast_2000_device_quirks);
 
 	ast->dclk_table = ast_2000_dclk_table;
 

drivers/gpu/drm/ast/ast_2100.c

···
 		ast->support_wuxga = true;
 }
 
+static const struct ast_device_quirks ast_2100_device_quirks = {
+};
+
 struct drm_device *ast_2100_device_create(struct pci_dev *pdev,
 					  const struct drm_driver *drv,
 					  enum ast_chip chip,
···
 		return ERR_CAST(ast);
 	dev = &ast->base;
 
-	ast_device_init(ast, chip, config_mode, regs, ioregs);
+	ast_device_init(ast, chip, config_mode, regs, ioregs, &ast_2100_device_quirks);
 
 	ast->dclk_table = ast_2000_dclk_table;
 

drivers/gpu/drm/ast/ast_2200.c

···
 		ast->support_wuxga = true;
 }
 
+static const struct ast_device_quirks ast_2200_device_quirks = {
+};
+
 struct drm_device *ast_2200_device_create(struct pci_dev *pdev,
 					  const struct drm_driver *drv,
 					  enum ast_chip chip,
···
 		return ERR_CAST(ast);
 	dev = &ast->base;
 
-	ast_device_init(ast, chip, config_mode, regs, ioregs);
+	ast_device_init(ast, chip, config_mode, regs, ioregs, &ast_2200_device_quirks);
 
 	ast->dclk_table = ast_2000_dclk_table;
 

drivers/gpu/drm/ast/ast_2300.c

···
 		ast->support_wuxga = true;
 }
 
+static const struct ast_device_quirks ast_2300_device_quirks = {
+};
+
 struct drm_device *ast_2300_device_create(struct pci_dev *pdev,
 					  const struct drm_driver *drv,
 					  enum ast_chip chip,
···
 		return ERR_CAST(ast);
 	dev = &ast->base;
 
-	ast_device_init(ast, chip, config_mode, regs, ioregs);
+	ast_device_init(ast, chip, config_mode, regs, ioregs, &ast_2300_device_quirks);
 
 	ast->dclk_table = ast_2000_dclk_table;
 

drivers/gpu/drm/ast/ast_2400.c

···
 		ast->support_wuxga = true;
 }
 
+static const struct ast_device_quirks ast_2400_device_quirks = {
+};
+
 struct drm_device *ast_2400_device_create(struct pci_dev *pdev,
 					  const struct drm_driver *drv,
 					  enum ast_chip chip,
···
 		return ERR_CAST(ast);
 	dev = &ast->base;
 
-	ast_device_init(ast, chip, config_mode, regs, ioregs);
+	ast_device_init(ast, chip, config_mode, regs, ioregs, &ast_2400_device_quirks);
 
 	ast->dclk_table = ast_2000_dclk_table;
 

drivers/gpu/drm/ast/ast_2500.c

···
 		ast->support_wuxga = true;
 }
 
+static const struct ast_device_quirks ast_2500_device_quirks = {
+};
+
 struct drm_device *ast_2500_device_create(struct pci_dev *pdev,
 					  const struct drm_driver *drv,
 					  enum ast_chip chip,
···
 		return ERR_CAST(ast);
 	dev = &ast->base;
 
-	ast_device_init(ast, chip, config_mode, regs, ioregs);
+	ast_device_init(ast, chip, config_mode, regs, ioregs, &ast_2500_device_quirks);
 
 	ast->dclk_table = ast_2500_dclk_table;
 

drivers/gpu/drm/ast/ast_2600.c

···
 		ast->support_wuxga = true;
 }
 
+static const struct ast_device_quirks ast_2600_device_quirks = {
+};
+
 struct drm_device *ast_2600_device_create(struct pci_dev *pdev,
 					  const struct drm_driver *drv,
 					  enum ast_chip chip,
···
 		return ERR_CAST(ast);
 	dev = &ast->base;
 
-	ast_device_init(ast, chip, config_mode, regs, ioregs);
+	ast_device_init(ast, chip, config_mode, regs, ioregs, &ast_2600_device_quirks);
 
 	ast->dclk_table = ast_2500_dclk_table;
 

drivers/gpu/drm/ast/ast_drv.c

···
 		     enum ast_chip chip,
 		     enum ast_config_mode config_mode,
 		     void __iomem *regs,
-		     void __iomem *ioregs)
+		     void __iomem *ioregs,
+		     const struct ast_device_quirks *quirks)
 {
+	ast->quirks = quirks;
 	ast->chip = chip;
 	ast->config_mode = config_mode;
 	ast->regs = regs;

drivers/gpu/drm/ast/ast_drv.h

···
  * Device
  */
 
+struct ast_device_quirks {
+};
+
 struct ast_device {
 	struct drm_device base;
+
+	const struct ast_device_quirks *quirks;
 
 	void __iomem *regs;
 	void __iomem *ioregs;
···
 		     enum ast_chip chip,
 		     enum ast_config_mode config_mode,
 		     void __iomem *regs,
-		     void __iomem *ioregs);
+		     void __iomem *ioregs,
+		     const struct ast_device_quirks *quirks);
 void __ast_device_set_tx_chip(struct ast_device *ast, enum ast_tx_chip tx_chip);
 
 /* ast_2000.c */