1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2012 Texas Instruments
7 #ifndef __TILCDC_DRV_H__
8 #define __TILCDC_DRV_H__
10 #include <linux/cpufreq.h>
11 #include <linux/irqreturn.h>
13 #include <drm/drm_print.h>
16 struct workqueue_struct;
19 struct drm_connector_helper_funcs;
22 struct drm_display_mode;
24 struct drm_framebuffer;
26 struct drm_pending_vblank_event;
29 /* Defaulting to pixel clock defined on AM335x */
30 #define TILCDC_DEFAULT_MAX_PIXELCLOCK 126000
31 /* Maximum display width for LCDC V1 */
32 #define TILCDC_DEFAULT_MAX_WIDTH_V1 1024
33 /* ... and for LCDC V2 found on AM335x: */
34 #define TILCDC_DEFAULT_MAX_WIDTH_V2 2048
36 * This may need some tweaking, but want to allow at least 1280x1024@60
37 * with optimized DDR & EMIF settings tweaked 1920x1080@24 appears to
40 #define TILCDC_DEFAULT_MAX_BANDWIDTH (1280*1024*60)
43 struct tilcdc_drm_private {
46 struct clk *clk; /* functional clock */
47 int rev; /* IP revision */
51 /* don't attempt resolutions w/ higher W * H * Hz: */
52 uint32_t max_bandwidth;
54 * Pixel Clock will be restricted to some value as
55 * defined in the device datasheet measured in KHz
57 uint32_t max_pixelclock;
59 * Max allowable width is limited on a per device basis
64 /* Supported pixel formats */
65 const uint32_t *pixelformats;
66 uint32_t num_pixelformats;
68 #ifdef CONFIG_CPU_FREQ
69 struct notifier_block freq_transition;
72 struct workqueue_struct *wq;
74 struct drm_crtc *crtc;
76 unsigned int num_encoders;
77 struct drm_encoder *encoders[8];
79 unsigned int num_connectors;
80 struct drm_connector *connectors[8];
82 struct drm_encoder *external_encoder;
83 struct drm_connector *external_connector;
86 bool is_componentized;
90 /* Sub-module for display. Since we don't know at compile time what panels
91 * or display adapter(s) might be present (for ex, off chip dvi/tfp410,
92 * hdmi encoder, various lcd panels), the connector/encoder(s) are split into
93 * separate drivers. If they are probed and found to be present, they
94 * register themselves with tilcdc_register_module().
98 struct tilcdc_module_ops {
99 /* create appropriate encoders/connectors: */
100 int (*modeset_init)(struct tilcdc_module *mod, struct drm_device *dev);
101 #ifdef CONFIG_DEBUG_FS
102 /* create debugfs nodes (can be NULL): */
103 int (*debugfs_init)(struct tilcdc_module *mod, struct drm_minor *minor);
107 struct tilcdc_module {
109 struct list_head list;
110 const struct tilcdc_module_ops *funcs;
113 void tilcdc_module_init(struct tilcdc_module *mod, const char *name,
114 const struct tilcdc_module_ops *funcs);
115 void tilcdc_module_cleanup(struct tilcdc_module *mod);
117 /* Panel config that needs to be set in the crtc, but is not coming from
118 * the mode timings. The display module is expected to call
119 * tilcdc_crtc_set_panel_info() to set this during modeset.
121 struct tilcdc_panel_info {
123 /* AC Bias Pin Frequency */
126 /* AC Bias Pin Transitions per Interrupt */
127 uint32_t ac_bias_intrpt;
130 uint32_t dma_burst_sz;
135 /* FIFO DMA Request Delay */
138 /* TFT Alternative Signal Mapping (Only for active) */
141 /* Invert pixel clock */
144 /* Horizontal and Vertical Sync Edge: 0=rising 1=falling */
147 /* Horizontal and Vertical Sync: Control: 0=ignore */
150 /* Raster Data Order Select: 1=Most-to-least 0=Least-to-most */
151 uint32_t raster_order;
153 /* DMA FIFO threshold */
157 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
159 int tilcdc_crtc_create(struct drm_device *dev);
160 irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc);
161 void tilcdc_crtc_update_clk(struct drm_crtc *crtc);
162 void tilcdc_crtc_set_panel_info(struct drm_crtc *crtc,
163 const struct tilcdc_panel_info *info);
164 void tilcdc_crtc_set_simulate_vesa_sync(struct drm_crtc *crtc,
165 bool simulate_vesa_sync);
166 void tilcdc_crtc_shutdown(struct drm_crtc *crtc);
167 int tilcdc_crtc_update_fb(struct drm_crtc *crtc,
168 struct drm_framebuffer *fb,
169 struct drm_pending_vblank_event *event);
171 int tilcdc_plane_init(struct drm_device *dev, struct drm_plane *plane);
173 #endif /* __TILCDC_DRV_H__ */