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 */ 72