drivers/video/am335x-fb.h

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