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16ea975e RC |
1 | /* |
2 | * Copyright (C) 2012 Texas Instruments | |
3 | * Author: Rob Clark <robdclark@gmail.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License version 2 as published by | |
7 | * the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
16 | */ | |
17 | ||
18 | #ifndef __TILCDC_DRV_H__ | |
19 | #define __TILCDC_DRV_H__ | |
20 | ||
21 | #include <linux/clk.h> | |
22 | #include <linux/cpufreq.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/platform_device.h> | |
25 | #include <linux/pm.h> | |
26 | #include <linux/pm_runtime.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/of.h> | |
29 | #include <linux/of_device.h> | |
30 | #include <linux/list.h> | |
31 | ||
32 | #include <drm/drmP.h> | |
33 | #include <drm/drm_crtc_helper.h> | |
34 | #include <drm/drm_gem_cma_helper.h> | |
35 | #include <drm/drm_fb_cma_helper.h> | |
36 | ||
37 | struct tilcdc_drm_private { | |
38 | void __iomem *mmio; | |
39 | ||
40 | struct clk *disp_clk; /* display dpll */ | |
41 | struct clk *clk; /* functional clock */ | |
42 | int rev; /* IP revision */ | |
43 | ||
44 | /* don't attempt resolutions w/ higher W * H * Hz: */ | |
45 | uint32_t max_bandwidth; | |
46 | ||
47 | /* register contents saved across suspend/resume: */ | |
48 | u32 saved_register[12]; | |
49 | ||
50 | #ifdef CONFIG_CPU_FREQ | |
51 | struct notifier_block freq_transition; | |
52 | unsigned int lcd_fck_rate; | |
53 | #endif | |
54 | ||
55 | struct workqueue_struct *wq; | |
56 | ||
57 | struct drm_fbdev_cma *fbdev; | |
58 | ||
59 | struct drm_crtc *crtc; | |
60 | ||
61 | unsigned int num_encoders; | |
62 | struct drm_encoder *encoders[8]; | |
63 | ||
64 | unsigned int num_connectors; | |
65 | struct drm_connector *connectors[8]; | |
66 | }; | |
67 | ||
68 | /* Sub-module for display. Since we don't know at compile time what panels | |
69 | * or display adapter(s) might be present (for ex, off chip dvi/tfp410, | |
70 | * hdmi encoder, various lcd panels), the connector/encoder(s) are split into | |
71 | * separate drivers. If they are probed and found to be present, they | |
72 | * register themselves with tilcdc_register_module(). | |
73 | */ | |
74 | struct tilcdc_module; | |
75 | ||
76 | struct tilcdc_module_ops { | |
77 | /* create appropriate encoders/connectors: */ | |
78 | int (*modeset_init)(struct tilcdc_module *mod, struct drm_device *dev); | |
79 | void (*destroy)(struct tilcdc_module *mod); | |
80 | #ifdef CONFIG_DEBUG_FS | |
81 | /* create debugfs nodes (can be NULL): */ | |
82 | int (*debugfs_init)(struct tilcdc_module *mod, struct drm_minor *minor); | |
83 | /* cleanup debugfs nodes (can be NULL): */ | |
84 | void (*debugfs_cleanup)(struct tilcdc_module *mod, struct drm_minor *minor); | |
85 | #endif | |
86 | }; | |
87 | ||
88 | struct tilcdc_module { | |
89 | const char *name; | |
90 | struct list_head list; | |
91 | const struct tilcdc_module_ops *funcs; | |
92 | }; | |
93 | ||
94 | void tilcdc_module_init(struct tilcdc_module *mod, const char *name, | |
95 | const struct tilcdc_module_ops *funcs); | |
96 | void tilcdc_module_cleanup(struct tilcdc_module *mod); | |
97 | ||
98 | ||
99 | /* Panel config that needs to be set in the crtc, but is not coming from | |
100 | * the mode timings. The display module is expected to call | |
101 | * tilcdc_crtc_set_panel_info() to set this during modeset. | |
102 | */ | |
103 | struct tilcdc_panel_info { | |
104 | ||
105 | /* AC Bias Pin Frequency */ | |
106 | uint32_t ac_bias; | |
107 | ||
108 | /* AC Bias Pin Transitions per Interrupt */ | |
109 | uint32_t ac_bias_intrpt; | |
110 | ||
111 | /* DMA burst size */ | |
112 | uint32_t dma_burst_sz; | |
113 | ||
114 | /* Bits per pixel */ | |
115 | uint32_t bpp; | |
116 | ||
117 | /* FIFO DMA Request Delay */ | |
118 | uint32_t fdd; | |
119 | ||
120 | /* TFT Alternative Signal Mapping (Only for active) */ | |
121 | bool tft_alt_mode; | |
122 | ||
123 | /* Invert pixel clock */ | |
124 | bool invert_pxl_clk; | |
125 | ||
126 | /* Horizontal and Vertical Sync Edge: 0=rising 1=falling */ | |
127 | uint32_t sync_edge; | |
128 | ||
129 | /* Horizontal and Vertical Sync: Control: 0=ignore */ | |
130 | uint32_t sync_ctrl; | |
131 | ||
132 | /* Raster Data Order Select: 1=Most-to-least 0=Least-to-most */ | |
133 | uint32_t raster_order; | |
134 | ||
135 | /* DMA FIFO threshold */ | |
136 | uint32_t fifo_th; | |
137 | }; | |
138 | ||
139 | #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) | |
140 | ||
141 | struct drm_crtc *tilcdc_crtc_create(struct drm_device *dev); | |
142 | void tilcdc_crtc_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file); | |
143 | irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc); | |
144 | void tilcdc_crtc_update_clk(struct drm_crtc *crtc); | |
145 | void tilcdc_crtc_set_panel_info(struct drm_crtc *crtc, | |
146 | const struct tilcdc_panel_info *info); | |
147 | int tilcdc_crtc_mode_valid(struct drm_crtc *crtc, struct drm_display_mode *mode); | |
148 | int tilcdc_crtc_max_width(struct drm_crtc *crtc); | |
149 | ||
150 | #endif /* __TILCDC_DRV_H__ */ |