1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) STMicroelectronics SA 2017
15 u32 hw_version; /* hardware version */
16 u32 nb_layers; /* number of supported layers */
17 u32 layer_ofs; /* layer offset for applicable regs */
18 const u32 *layer_regs; /* layer register offset */
19 u32 bus_width; /* bus width (32 or 64 bits) */
20 const u32 *pix_fmt_hw; /* supported hw pixel formats */
21 const u32 *pix_fmt_drm; /* supported drm pixel formats */
22 int pix_fmt_nb; /* number of pixel format */
23 bool pix_fmt_flex; /* pixel format flexibility supported */
24 bool non_alpha_only_l1; /* non-native no-alpha formats on layer 1 */
25 int pad_max_freq_hz; /* max frequency supported by pad */
26 int nb_irq; /* number of hardware interrupts */
27 bool ycbcr_input; /* ycbcr input converter supported */
28 bool ycbcr_output; /* ycbcr output converter supported */
29 bool plane_reg_shadow; /* plane shadow registers ability */
30 bool crc; /* cyclic redundancy check supported */
31 bool dynamic_zorder; /* dynamic z-order */
32 bool plane_rotation; /* plane rotation */
33 bool fifo_threshold; /* fifo underrun threshold supported */
36 #define LTDC_MAX_LAYER 4
40 ktime_t last_timestamp;
45 struct regmap *regmap;
46 struct clk *pixel_clk; /* lcd pixel clock */
47 struct mutex err_lock; /* protecting error_status */
48 struct ltdc_caps caps;
50 u32 fifo_err; /* fifo underrun error counter */
51 u32 fifo_warn; /* fifo underrun warning counter */
52 u32 fifo_threshold; /* fifo underrun threshold */
53 u32 transfer_err; /* transfer error counter */
54 struct fps_info plane_fpsi[LTDC_MAX_LAYER];
55 struct drm_atomic_state *suspend_state;
60 int ltdc_load(struct drm_device *ddev);
61 void ltdc_unload(struct drm_device *ddev);
62 void ltdc_suspend(struct drm_device *ddev);
63 int ltdc_resume(struct drm_device *ddev);