drivers/video/am335x-fb.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright (C) 2013-2018 Hannes Schmelzer <oe5hpm@oevsv.at> -
   4  * B&R Industrial Automation GmbH - http://www.br-automation.com
   5  */
   6
   7 #ifndef AM335X_FB_H
   8 #define AM335X_FB_H
   9
  10 #define HSVS_CONTROL    (0x01 << 25)    /*
  11                                          * 0 = lcd_lp and lcd_fp are driven on
  12                                          * opposite edges of pixel clock than
  13                                          * the lcd_pixel_o
  14                                          * 1 = lcd_lp and lcd_fp are driven
  15                                          * according to bit 24 Note that this
  16                                          * bit MUST be set to '0' for Passive
  17                                          * Matrix displays the edge timing is
  18                                          * fixed
  19                                          */
  20 #define HSVS_RISEFALL   (0x01 << 24)    /*
  21                                          * 0 = lcd_lp and lcd_fp are driven on
  22                                          * the rising edge of pixel clock (bit
  23                                          * 25 must be set to 1)
  24                                          * 1 = lcd_lp and lcd_fp are driven on
  25                                          * the falling edge of pixel clock (bit
  26                                          * 25 must be set to 1)
  27                                          */
  28 #define DE_INVERT       (0x01 << 23)    /*
  29                                          * 0 = DE is low-active
  30                                          * 1 = DE is high-active
  31                                          */
  32 #define PXCLK_INVERT    (0x01 << 22)    /*
  33                                          * 0 = pix-clk is high-active
  34                                          * 1 = pic-clk is low-active
  35                                          */
  36 #define HSYNC_INVERT    (0x01 << 21)    /*
  37                                          * 0 = HSYNC is active high
  38                                          * 1 = HSYNC is avtive low
  39                                          */
  40 #define VSYNC_INVERT    (0x01 << 20)    /*
  41                                          * 0 = VSYNC is active high
  42                                          * 1 = VSYNC is active low
  43                                          */
  44
  45 struct am335x_lcdpanel {
  46         unsigned int    hactive;        /* Horizontal active area */
  47         unsigned int    vactive;        /* Vertical active area */
  48         unsigned int    bpp;            /* bits per pixel */
  49         unsigned int    hfp;            /* Horizontal front porch */
  50         unsigned int    hbp;            /* Horizontal back porch */
  51         unsigned int    hsw;            /* Horizontal Sync Pulse Width */
  52         unsigned int    vfp;            /* Vertical front porch */
  53         unsigned int    vbp;            /* Vertical back porch */
  54         unsigned int    vsw;            /* Vertical Sync Pulse Width */
  55         unsigned int    pxl_clk;        /* Pixel clock */
  56         unsigned int    pol;            /* polarity of sync, clock signals */
  57         unsigned int    pup_delay;      /*
  58                                          * time in ms after power on to
  59                                          * initialization of lcd-controller
  60                                          * (VCC ramp up time)
  61                                          */
  62         unsigned int    pon_delay;      /*
  63                                          * time in ms after initialization of
  64                                          * lcd-controller (pic stabilization)
  65                                          */
  66         void (*panel_power_ctrl)(int);  /* fp for power on/off display */
  67 };
  68
  69 int am335xfb_init(struct am335x_lcdpanel *panel);
  70
  71 #endif  /* AM335X_FB_H */