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omapfb.h
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1 /*
2  * File: drivers/video/omap/omapfb.h
3  *
4  * Framebuffer driver for TI OMAP boards
5  *
6  * Copyright (C) 2004 Nokia Corporation
7  * Author: Imre Deak <[email protected]>
8  *
9  * This program is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU General Public License as published by the
11  * Free Software Foundation; either version 2 of the License, or (at your
12  * option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License along
20  * with this program; if not, write to the Free Software Foundation, Inc.,
21  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22  */
23 
24 #ifndef __OMAPFB_H
25 #define __OMAPFB_H
26 
27 #include <linux/fb.h>
28 #include <linux/mutex.h>
29 #include <linux/omapfb.h>
30 
31 #define OMAPFB_EVENT_READY 1
32 #define OMAPFB_EVENT_DISABLED 2
33 
34 #define OMAP_LCDC_INV_VSYNC 0x0001
35 #define OMAP_LCDC_INV_HSYNC 0x0002
36 #define OMAP_LCDC_INV_PIX_CLOCK 0x0004
37 #define OMAP_LCDC_INV_OUTPUT_EN 0x0008
38 #define OMAP_LCDC_HSVS_RISING_EDGE 0x0010
39 #define OMAP_LCDC_HSVS_OPPOSITE 0x0020
40 
41 #define OMAP_LCDC_SIGNAL_MASK 0x003f
42 
43 #define OMAP_LCDC_PANEL_TFT 0x0100
44 
45 #define OMAPFB_PLANE_XRES_MIN 8
46 #define OMAPFB_PLANE_YRES_MIN 8
47 
48 struct omapfb_device;
49 
50 #define OMAPFB_PLANE_NUM 1
51 
52 struct omapfb_mem_region {
53  u32 paddr;
54  void __iomem *vaddr;
55  unsigned long size;
56  u8 type; /* OMAPFB_PLANE_MEM_* */
57  enum omapfb_color_format format;/* OMAPFB_COLOR_* */
58  unsigned format_used:1; /* Must be set when format is set.
59  * Needed b/c of the badly chosen 0
60  * base for OMAPFB_COLOR_* values
61  */
62  unsigned alloc:1; /* allocated by the driver */
63  unsigned map:1; /* kernel mapped by the driver */
64 };
65 
66 struct omapfb_mem_desc {
67  int region_cnt;
68  struct omapfb_mem_region region[OMAPFB_PLANE_NUM];
69 };
70 
71 struct lcd_panel {
72  const char *name;
73  int config; /* TFT/STN, signal inversion */
74  int bpp; /* Pixel format in fb mem */
75  int data_lines; /* Lines on LCD HW interface */
76 
77  int x_res, y_res;
78  int pixel_clock; /* In kHz */
79  int hsw; /* Horizontal synchronization
80  pulse width */
81  int hfp; /* Horizontal front porch */
82  int hbp; /* Horizontal back porch */
83  int vsw; /* Vertical synchronization
84  pulse width */
85  int vfp; /* Vertical front porch */
86  int vbp; /* Vertical back porch */
87  int acb; /* ac-bias pin frequency */
88  int pcd; /* pixel clock divider.
89  Obsolete use pixel_clock instead */
90 
91  int (*init) (struct lcd_panel *panel,
92  struct omapfb_device *fbdev);
93  void (*cleanup) (struct lcd_panel *panel);
94  int (*enable) (struct lcd_panel *panel);
95  void (*disable) (struct lcd_panel *panel);
96  unsigned long (*get_caps) (struct lcd_panel *panel);
97  int (*set_bklight_level)(struct lcd_panel *panel,
98  unsigned int level);
99  unsigned int (*get_bklight_level)(struct lcd_panel *panel);
100  unsigned int (*get_bklight_max) (struct lcd_panel *panel);
101  int (*run_test) (struct lcd_panel *panel, int test_num);
102 };
103 
104 struct extif_timings {
105  int cs_on_time;
106  int cs_off_time;
107  int we_on_time;
108  int we_off_time;
109  int re_on_time;
110  int re_off_time;
111  int we_cycle_time;
112  int re_cycle_time;
113  int cs_pulse_width;
114  int access_time;
115 
116  int clk_div;
117 
118  u32 tim[5]; /* set by extif->convert_timings */
119 
120  int converted;
121 };
122 
123 struct lcd_ctrl_extif {
124  int (*init) (struct omapfb_device *fbdev);
125  void (*cleanup) (void);
126  void (*get_clk_info) (u32 *clk_period, u32 *max_clk_div);
127  unsigned long (*get_max_tx_rate)(void);
128  int (*convert_timings) (struct extif_timings *timings);
129  void (*set_timings) (const struct extif_timings *timings);
130  void (*set_bits_per_cycle)(int bpc);
131  void (*write_command) (const void *buf, unsigned int len);
132  void (*read_data) (void *buf, unsigned int len);
133  void (*write_data) (const void *buf, unsigned int len);
134  void (*transfer_area) (int width, int height,
135  void (callback)(void *data), void *data);
136  int (*setup_tearsync) (unsigned pin_cnt,
137  unsigned hs_pulse_time, unsigned vs_pulse_time,
138  int hs_pol_inv, int vs_pol_inv, int div);
139  int (*enable_tearsync) (int enable, unsigned line);
140 
141  unsigned long max_transmit_size;
142 };
143 
144 struct omapfb_notifier_block {
145  struct notifier_block nb;
146  void *data;
147  int plane_idx;
148 };
149 
150 typedef int (*omapfb_notifier_callback_t)(struct notifier_block *,
151  unsigned long event,
152  void *fbi);
153 
154 struct lcd_ctrl {
155  const char *name;
156  void *data;
157 
158  int (*init) (struct omapfb_device *fbdev,
159  int ext_mode,
160  struct omapfb_mem_desc *req_md);
161  void (*cleanup) (void);
162  void (*bind_client) (struct omapfb_notifier_block *nb);
163  void (*get_caps) (int plane, struct omapfb_caps *caps);
164  int (*set_update_mode)(enum omapfb_update_mode mode);
165  enum omapfb_update_mode (*get_update_mode)(void);
166  int (*setup_plane) (int plane, int channel_out,
167  unsigned long offset,
168  int screen_width,
169  int pos_x, int pos_y, int width,
170  int height, int color_mode);
171  int (*set_rotate) (int angle);
172  int (*setup_mem) (int plane, size_t size,
173  int mem_type, unsigned long *paddr);
174  int (*mmap) (struct fb_info *info,
175  struct vm_area_struct *vma);
176  int (*set_scale) (int plane,
177  int orig_width, int orig_height,
178  int out_width, int out_height);
179  int (*enable_plane) (int plane, int enable);
180  int (*update_window) (struct fb_info *fbi,
181  struct omapfb_update_window *win,
182  void (*callback)(void *),
183  void *callback_data);
184  void (*sync) (void);
185  void (*suspend) (void);
186  void (*resume) (void);
187  int (*run_test) (int test_num);
188  int (*setcolreg) (u_int regno, u16 red, u16 green,
189  u16 blue, u16 transp,
190  int update_hw_mem);
191  int (*set_color_key) (struct omapfb_color_key *ck);
192  int (*get_color_key) (struct omapfb_color_key *ck);
193 };
194 
195 enum omapfb_state {
196  OMAPFB_DISABLED = 0,
197  OMAPFB_SUSPENDED = 99,
198  OMAPFB_ACTIVE = 100
199 };
200 
201 struct omapfb_plane_struct {
202  int idx;
203  struct omapfb_plane_info info;
204  enum omapfb_color_format color_mode;
205  struct omapfb_device *fbdev;
206 };
207 
208 struct omapfb_device {
209  int state;
210  int ext_lcdc; /* Using external
211  LCD controller */
212  struct mutex rqueue_mutex;
213 
214  int palette_size;
215  u32 pseudo_palette[17];
216 
217  struct lcd_panel *panel; /* LCD panel */
218  const struct lcd_ctrl *ctrl; /* LCD controller */
219  const struct lcd_ctrl *int_ctrl; /* internal LCD ctrl */
220  struct lcd_ctrl_extif *ext_if; /* LCD ctrl external
221  interface */
222  struct device *dev;
223  struct fb_var_screeninfo new_var; /* for mode changes */
224 
225  struct omapfb_mem_desc mem_desc;
226  struct fb_info *fb_info[OMAPFB_PLANE_NUM];
227 
228  struct platform_device *dssdev; /* dummy dev for clocks */
229 };
230 
231 extern struct lcd_ctrl omap1_lcd_ctrl;
232 
233 extern void omapfb_register_panel(struct lcd_panel *panel);
234 extern void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval);
235 extern void omapfb_notify_clients(struct omapfb_device *fbdev,
236  unsigned long event);
237 extern int omapfb_register_client(struct omapfb_notifier_block *nb,
238  omapfb_notifier_callback_t callback,
239  void *callback_data);
240 extern int omapfb_unregister_client(struct omapfb_notifier_block *nb);
241 extern int omapfb_update_window_async(struct fb_info *fbi,
242  struct omapfb_update_window *win,
243  void (*callback)(void *),
244  void *callback_data);
245 
246 #endif /* __OMAPFB_H */
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