drm/stm/drv.c

1 // SPDX-License-Identifier: GPL-2.0
12 #include <linux/dma-mapping.h>
27 #include "ltdc.h"
42 	unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);  in stm_gem_cma_dumb_create()
48 	args->pitch = roundup(min_pitch, 128);  in stm_gem_cma_dumb_create()
49 	args->height = roundup(args->height, 4);  in stm_gem_cma_dumb_create()
70 	struct platform_device *pdev = to_platform_device(ddev->dev);  in drv_load()
76 	ldev = devm_kzalloc(ddev->dev, sizeof(*ldev), GFP_KERNEL);  in drv_load()
78 		return -ENOMEM;  in drv_load()
80 	ddev->dev_private = (void *)ldev;  in drv_load()
91 	ddev->mode_config.min_width = 0;  in drv_load()
92 	ddev->mode_config.min_height = 0;  in drv_load()
93 	ddev->mode_config.max_width = STM_MAX_FB_WIDTH;  in drv_load()
94 	ddev->mode_config.max_height = STM_MAX_FB_HEIGHT;  in drv_load()
95 	ddev->mode_config.funcs = &drv_mode_config_funcs;  in drv_load()
120 	struct ltdc_device *ldev = ddev->dev_private;  in drv_suspend()
123 	WARN_ON(ldev->suspend_state);  in drv_suspend()
129 	ldev->suspend_state = state;  in drv_suspend()
138 	struct ltdc_device *ldev = ddev->dev_private;  in drv_resume()
141 	if (WARN_ON(!ldev->suspend_state))  in drv_resume()
142 		return -ENOENT;  in drv_resume()
145 	ret = drm_atomic_helper_resume(ddev, ldev->suspend_state);  in drv_resume()
149 	ldev->suspend_state = NULL;  in drv_resume()
180 	struct device *dev = &pdev->dev;  in stm_drm_platform_probe()
224 	{ .compatible = "st,stm32-ltdc"},
233 		.name = "stm32-display",
245 MODULE_DESCRIPTION("STMicroelectronics ST DRM LTDC driver");