sys/arch/arm/xscale/pxa2x0_lcd.h

   1 /* $NetBSD: pxa2x0_lcd.h,v 1.8 2007/03/04 05:59:39 christos Exp $ */
   2 /*
   3  * Copyright (c) 2002  Genetec Corporation.  All rights reserved.
   4  * Written by Hiroyuki Bessho for Genetec Corporation.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed for the NetBSD Project by
  17  *      Genetec Corporation.
  18  * 4. The name of Genetec Corporation may not be used to endorse or
  19  *    promote products derived from this software without specific prior
  20  *    written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GENETEC CORPORATION
  26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35
  36 #ifndef _ARM_XSCALE_PXA2X0_LCD_H
  37 #define _ARM_XSCALE_PXA2X0_LCD_H
  38
  39 #include <dev/rasops/rasops.h>
  40 #include <machine/bus.h>
  41
  42 /* LCD Contoroller */
  43
  44 struct  lcd_dma_descriptor {
  45         uint32_t        fdadr;  /* next frame descriptor */
  46         uint32_t        fsadr;  /* frame start address */
  47         uint32_t        fidr;   /* frame ID */
  48         uint32_t        ldcmd;  /* DMA command */
  49 #define LDCMD_PAL       (1U<<26)        /* Pallet buffer */
  50 #define LDCMD_SOFINT    (1U<<22)        /* Start of Frame interrupt */
  51 #define LDCMD_EOFINT    (1U<<21)        /* End of Frame interrupt */
  52 };
  53
  54
  55 struct pxa2x0_lcd_screen {
  56         LIST_ENTRY(pxa2x0_lcd_screen) link;
  57
  58         /* Frame buffer */
  59         bus_dmamap_t dma;
  60         bus_dma_segment_t segs[1];
  61         int     nsegs;
  62         size_t  buf_size;
  63         size_t  map_size;
  64         void    *buf_va;
  65         int     depth;
  66
  67         /* DMA frame descriptor */
  68         struct  lcd_dma_descriptor *dma_desc;
  69         paddr_t dma_desc_pa;
  70
  71         /* rasterop */
  72         struct rasops_info rinfo;
  73 };
  74
  75 struct pxa2x0_lcd_softc {
  76         device_t                dev;
  77         /* control register */
  78         bus_space_tag_t         iot;
  79         bus_space_handle_t      ioh;
  80         bus_dma_tag_t           dma_tag;
  81
  82         uint32_t                flags;
  83 #define FLAG_NOUSE_ACBIAS       (1U<<0)
  84
  85         const struct lcd_panel_geometry *geometry;
  86
  87         int n_screens;
  88         LIST_HEAD(, pxa2x0_lcd_screen) screens;
  89         struct pxa2x0_lcd_screen *active;
  90         void *ih;                       /* interrupt handler */
  91 };
  92
  93 struct lcd_panel_geometry {
  94         short panel_width;
  95         short panel_height;
  96         short extra_lines;
  97
  98         short panel_info;
  99 #define LCDPANEL_VSP    (1<<0)          /* L_FCLK pin is active low */
 100 #define LCDPANEL_HSP    (1<<1)          /* L_LCLK pin is active low */
 101 #define LCDPANEL_PCP    (1<<2)          /* use L_PCLK falling edge */
 102 #define LCDPANEL_OEP    (1<<3)          /* L_BIAS pin is active low */
 103 #define LCDPANEL_DPC    (1<<4)          /* double pixel clock mode */
 104
 105 #define LCDPANEL_DUAL   (1<<5)          /* Dual or single */
 106 #define LCDPANEL_SINGLE 0
 107 #define LCDPANEL_ACTIVE (1<<6)          /* Active or Passive */
 108 #define LCDPANEL_PASSIVE 0
 109 #define LCDPANEL_MONOCHROME (1<<7)      /* depth=1 */
 110
 111         short pixel_clock_div;          /* pixel clock divider */
 112         short ac_bias;                  /* AC bias pin frequency */
 113
 114         short hsync_pulse_width;        /* Horizontao sync pulse width */
 115         short beg_line_wait;            /* beginning of line wait (BLW) */
 116         short end_line_wait;            /* end of line pxel wait (ELW) */
 117
 118         short vsync_pulse_width;        /* vertical sync pulse width */
 119         short beg_frame_wait;           /* beginning of frame wait (BFW) */
 120         short end_frame_wait;           /* end of frame wait (EFW) */
 121
 122         short pcd_div;                  /* PCD divisor selection */
 123 };
 124
 125 /*
 126  * we need bits-per-pixel value to configure wsdisplay screen
 127  */
 128 struct pxa2x0_wsscreen_descr {
 129         struct wsscreen_descr  c;       /* standard descriptor */
 130         int depth;                      /* bits per pixel */
 131         int flags;                      /* rasops flags */
 132 };
 133
 134 void    pxa2x0_lcd_attach_sub(struct pxa2x0_lcd_softc *,
 135             struct pxaip_attach_args *, const struct lcd_panel_geometry *);
 136 int     pxa2x0_lcd_cnattach(struct pxa2x0_wsscreen_descr *,
 137             const struct lcd_panel_geometry *);
 138 void    pxa2x0_lcd_start_dma(struct pxa2x0_lcd_softc *,
 139             struct pxa2x0_lcd_screen *);
 140
 141 void    pxa2x0_lcd_geometry(struct pxa2x0_lcd_softc *,
 142             const struct lcd_panel_geometry *);
 143 int     pxa2x0_lcd_new_screen(struct pxa2x0_lcd_softc *, int,
 144             struct pxa2x0_lcd_screen **);
 145
 146 int     pxa2x0_lcd_setup_wsscreen(struct pxa2x0_wsscreen_descr *,
 147             const struct lcd_panel_geometry *, const char * );
 148
 149 int     pxa2x0_lcd_alloc_screen(void *, const struct wsscreen_descr *,
 150             void **, int *, int *, long *);
 151 void    pxa2x0_lcd_free_screen(void *, void *);
 152 int     pxa2x0_lcd_ioctl(void *, void *, u_long, void *, int, struct lwp *);
 153 paddr_t pxa2x0_lcd_mmap(void *, void *, off_t, int);
 154 int     pxa2x0_lcd_show_screen(void *, void *, int, void (*)(void *, int, int),
 155             void *);
 156 void    pxa2x0_lcd_power(int, void *);
 157 void    pxa2x0_lcd_suspend(struct pxa2x0_lcd_softc *);
 158 void    pxa2x0_lcd_resume(struct pxa2x0_lcd_softc *);
 159
 160 extern const struct wsdisplay_emulops pxa2x0_lcd_emulops;
 161
 162 #endif /* _ARM_XSCALE_PXA2X0_LCD_H */