drivers/video/fbdev/omap/omapfb.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * File: drivers/video/omap/omapfb.h
   4  *
   5  * Framebuffer driver for TI OMAP boards
   6  *
   7  * Copyright (C) 2004 Nokia Corporation
   8  * Author: Imre Deak <imre.deak@nokia.com>
   9  */
  10
  11 #ifndef __OMAPFB_H
  12 #define __OMAPFB_H
  13
  14 #include <linux/fb.h>
  15 #include <linux/mutex.h>
  16 #include <linux/omapfb.h>
  17
  18 #define OMAPFB_EVENT_READY      1
  19 #define OMAPFB_EVENT_DISABLED   2
  20
  21 #define OMAP_LCDC_INV_VSYNC             0x0001
  22 #define OMAP_LCDC_INV_HSYNC             0x0002
  23 #define OMAP_LCDC_INV_PIX_CLOCK         0x0004
  24 #define OMAP_LCDC_INV_OUTPUT_EN         0x0008
  25 #define OMAP_LCDC_HSVS_RISING_EDGE      0x0010
  26 #define OMAP_LCDC_HSVS_OPPOSITE         0x0020
  27
  28 #define OMAP_LCDC_SIGNAL_MASK           0x003f
  29
  30 #define OMAP_LCDC_PANEL_TFT             0x0100
  31
  32 #define OMAPFB_PLANE_XRES_MIN           8
  33 #define OMAPFB_PLANE_YRES_MIN           8
  34
  35 struct omapfb_device;
  36
  37 #define OMAPFB_PLANE_NUM                1
  38
  39 struct omapfb_mem_region {
  40         u32             paddr;
  41         void __iomem    *vaddr;
  42         unsigned long   size;
  43         u8              type;           /* OMAPFB_PLANE_MEM_* */
  44         enum omapfb_color_format format;/* OMAPFB_COLOR_* */
  45         unsigned        format_used:1;  /* Must be set when format is set.
  46                                          * Needed b/c of the badly chosen 0
  47                                          * base for OMAPFB_COLOR_* values
  48                                          */
  49         unsigned        alloc:1;        /* allocated by the driver */
  50         unsigned        map:1;          /* kernel mapped by the driver */
  51 };
  52
  53 struct omapfb_mem_desc {
  54         int                             region_cnt;
  55         struct omapfb_mem_region        region[OMAPFB_PLANE_NUM];
  56 };
  57
  58 struct lcd_panel {
  59         const char      *name;
  60         int             config;         /* TFT/STN, signal inversion */
  61         int             bpp;            /* Pixel format in fb mem */
  62         int             data_lines;     /* Lines on LCD HW interface */
  63
  64         int             x_res, y_res;
  65         int             pixel_clock;    /* In kHz */
  66         int             hsw;            /* Horizontal synchronization
  67                                            pulse width */
  68         int             hfp;            /* Horizontal front porch */
  69         int             hbp;            /* Horizontal back porch */
  70         int             vsw;            /* Vertical synchronization
  71                                            pulse width */
  72         int             vfp;            /* Vertical front porch */
  73         int             vbp;            /* Vertical back porch */
  74         int             acb;            /* ac-bias pin frequency */
  75         int             pcd;            /* pixel clock divider.
  76                                            Obsolete use pixel_clock instead */
  77
  78         int             (*init)         (struct lcd_panel *panel,
  79                                          struct omapfb_device *fbdev);
  80         void            (*cleanup)      (struct lcd_panel *panel);
  81         int             (*enable)       (struct lcd_panel *panel);
  82         void            (*disable)      (struct lcd_panel *panel);
  83         unsigned long   (*get_caps)     (struct lcd_panel *panel);
  84         int             (*set_bklight_level)(struct lcd_panel *panel,
  85                                              unsigned int level);
  86         unsigned int    (*get_bklight_level)(struct lcd_panel *panel);
  87         unsigned int    (*get_bklight_max)  (struct lcd_panel *panel);
  88         int             (*run_test)     (struct lcd_panel *panel, int test_num);
  89 };
  90
  91 struct extif_timings {
  92         int cs_on_time;
  93         int cs_off_time;
  94         int we_on_time;
  95         int we_off_time;
  96         int re_on_time;
  97         int re_off_time;
  98         int we_cycle_time;
  99         int re_cycle_time;
 100         int cs_pulse_width;
 101         int access_time;
 102
 103         int clk_div;
 104
 105         u32 tim[5];             /* set by extif->convert_timings */
 106
 107         int converted;
 108 };
 109
 110 struct lcd_ctrl_extif {
 111         int  (*init)            (struct omapfb_device *fbdev);
 112         void (*cleanup)         (void);
 113         void (*get_clk_info)    (u32 *clk_period, u32 *max_clk_div);
 114         unsigned long (*get_max_tx_rate)(void);
 115         int  (*convert_timings) (struct extif_timings *timings);
 116         void (*set_timings)     (const struct extif_timings *timings);
 117         void (*set_bits_per_cycle)(int bpc);
 118         void (*write_command)   (const void *buf, unsigned int len);
 119         void (*read_data)       (void *buf, unsigned int len);
 120         void (*write_data)      (const void *buf, unsigned int len);
 121         void (*transfer_area)   (int width, int height,
 122                                  void (callback)(void *data), void *data);
 123         int  (*setup_tearsync)  (unsigned pin_cnt,
 124                                  unsigned hs_pulse_time, unsigned vs_pulse_time,
 125                                  int hs_pol_inv, int vs_pol_inv, int div);
 126         int  (*enable_tearsync) (int enable, unsigned line);
 127
 128         unsigned long           max_transmit_size;
 129 };
 130
 131 struct omapfb_notifier_block {
 132         struct notifier_block   nb;
 133         void                    *data;
 134         int                     plane_idx;
 135 };
 136
 137 typedef int (*omapfb_notifier_callback_t)(struct notifier_block *,
 138                                           unsigned long event,
 139                                           void *fbi);
 140
 141 struct lcd_ctrl {
 142         const char      *name;
 143         void            *data;
 144
 145         int             (*init)           (struct omapfb_device *fbdev,
 146                                            int ext_mode,
 147                                            struct omapfb_mem_desc *req_md);
 148         void            (*cleanup)        (void);
 149         void            (*bind_client)    (struct omapfb_notifier_block *nb);
 150         void            (*get_caps)       (int plane, struct omapfb_caps *caps);
 151         int             (*set_update_mode)(enum omapfb_update_mode mode);
 152         enum omapfb_update_mode (*get_update_mode)(void);
 153         int             (*setup_plane)    (int plane, int channel_out,
 154                                            unsigned long offset,
 155                                            int screen_width,
 156                                            int pos_x, int pos_y, int width,
 157                                            int height, int color_mode);
 158         int             (*set_rotate)     (int angle);
 159         int             (*setup_mem)      (int plane, size_t size,
 160                                            int mem_type, unsigned long *paddr);
 161         int             (*mmap)           (struct fb_info *info,
 162                                            struct vm_area_struct *vma);
 163         int             (*set_scale)      (int plane,
 164                                            int orig_width, int orig_height,
 165                                            int out_width, int out_height);
 166         int             (*enable_plane)   (int plane, int enable);
 167         int             (*update_window)  (struct fb_info *fbi,
 168                                            struct omapfb_update_window *win,
 169                                            void (*callback)(void *),
 170                                            void *callback_data);
 171         void            (*sync)           (void);
 172         void            (*suspend)        (void);
 173         void            (*resume)         (void);
 174         int             (*run_test)       (int test_num);
 175         int             (*setcolreg)      (u_int regno, u16 red, u16 green,
 176                                            u16 blue, u16 transp,
 177                                            int update_hw_mem);
 178         int             (*set_color_key)  (struct omapfb_color_key *ck);
 179         int             (*get_color_key)  (struct omapfb_color_key *ck);
 180 };
 181
 182 enum omapfb_state {
 183         OMAPFB_DISABLED         = 0,
 184         OMAPFB_SUSPENDED        = 99,
 185         OMAPFB_ACTIVE           = 100
 186 };
 187
 188 struct omapfb_plane_struct {
 189         int                             idx;
 190         struct omapfb_plane_info        info;
 191         enum omapfb_color_format        color_mode;
 192         struct omapfb_device            *fbdev;
 193 };
 194
 195 struct omapfb_device {
 196         int                     state;
 197         int                     ext_lcdc;               /* Using external
 198                                                            LCD controller */
 199         struct mutex            rqueue_mutex;
 200
 201         int                     palette_size;
 202         u32                     pseudo_palette[17];
 203
 204         struct lcd_panel        *panel;                 /* LCD panel */
 205         const struct lcd_ctrl   *ctrl;                  /* LCD controller */
 206         const struct lcd_ctrl   *int_ctrl;              /* internal LCD ctrl */
 207         struct lcd_ctrl_extif   *ext_if;                /* LCD ctrl external
 208                                                            interface */
 209         struct device           *dev;
 210         struct fb_var_screeninfo        new_var;        /* for mode changes */
 211
 212         struct omapfb_mem_desc          mem_desc;
 213         struct fb_info                  *fb_info[OMAPFB_PLANE_NUM];
 214
 215         struct platform_device  *dssdev;        /* dummy dev for clocks */
 216 };
 217
 218 extern struct lcd_ctrl omap1_lcd_ctrl;
 219
 220 extern void omapfb_register_panel(struct lcd_panel *panel);
 221 extern void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval);
 222 extern void omapfb_notify_clients(struct omapfb_device *fbdev,
 223                                   unsigned long event);
 224 extern int  omapfb_register_client(struct omapfb_notifier_block *nb,
 225                                    omapfb_notifier_callback_t callback,
 226                                    void *callback_data);
 227 extern int  omapfb_unregister_client(struct omapfb_notifier_block *nb);
 228 extern int  omapfb_update_window_async(struct fb_info *fbi,
 229                                        struct omapfb_update_window *win,
 230                                        void (*callback)(void *),
 231                                        void *callback_data);
 232
 233 #endif /* __OMAPFB_H */