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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Copyright (C) STMicroelectronics SA 2017
- *
- * Authors: Philippe Cornu <[email protected]>
- * Yannick Fertre <[email protected]>
- * Fabien Dessenne <[email protected]>
- * Mickael Reulier <[email protected]>
- */
- #ifndef _LTDC_H_
- #define _LTDC_H_
- struct ltdc_caps {
- u32 hw_version; /* hardware version */
- u32 nb_layers; /* number of supported layers */
- u32 layer_ofs; /* layer offset for applicable regs */
- const u32 *layer_regs; /* layer register offset */
- u32 bus_width; /* bus width (32 or 64 bits) */
- const u32 *pix_fmt_hw; /* supported hw pixel formats */
- const u32 *pix_fmt_drm; /* supported drm pixel formats */
- int pix_fmt_nb; /* number of pixel format */
- bool pix_fmt_flex; /* pixel format flexibility supported */
- bool non_alpha_only_l1; /* non-native no-alpha formats on layer 1 */
- int pad_max_freq_hz; /* max frequency supported by pad */
- int nb_irq; /* number of hardware interrupts */
- bool ycbcr_input; /* ycbcr input converter supported */
- bool ycbcr_output; /* ycbcr output converter supported */
- bool plane_reg_shadow; /* plane shadow registers ability */
- bool crc; /* cyclic redundancy check supported */
- bool dynamic_zorder; /* dynamic z-order */
- bool plane_rotation; /* plane rotation */
- bool fifo_threshold; /* fifo underrun threshold supported */
- };
- #define LTDC_MAX_LAYER 4
- struct fps_info {
- unsigned int counter;
- ktime_t last_timestamp;
- };
- struct ltdc_device {
- void __iomem *regs;
- struct regmap *regmap;
- struct clk *pixel_clk; /* lcd pixel clock */
- struct mutex err_lock; /* protecting error_status */
- struct ltdc_caps caps;
- u32 irq_status;
- u32 fifo_err; /* fifo underrun error counter */
- u32 fifo_warn; /* fifo underrun warning counter */
- u32 fifo_threshold; /* fifo underrun threshold */
- u32 transfer_err; /* transfer error counter */
- struct fps_info plane_fpsi[LTDC_MAX_LAYER];
- struct drm_atomic_state *suspend_state;
- int crc_skip_count;
- bool crc_active;
- };
- int ltdc_load(struct drm_device *ddev);
- void ltdc_unload(struct drm_device *ddev);
- void ltdc_suspend(struct drm_device *ddev);
- int ltdc_resume(struct drm_device *ddev);
- #endif
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