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Hannes Petermaier3c5fabd2014-03-06 14:39:06 +01001/*
2 * Copyright (C) 2013 Hannes Petermaier <oe5hpm@oevsv.at> -
3 * Bernecker & Rainer Industrieelektronik 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
46struct 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 pon_delay; /*
59 * time in ms for turning on lcd after
60 * initializing lcd-controller
61 */
62 void (*panel_power_ctrl)(int); /* fp for power on/off display */
63};
64
65int am335xfb_init(struct am335x_lcdpanel *panel);
66
67#endif /* AM335X_FB_H */