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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2013-2018 Hannes Schmelzer <oe5hpm@oevsv.at> -
* B&R Industrial Automation GmbH - http://www.br-automation.com
*/
#ifndef AM335X_FB_H
#define AM335X_FB_H
#define HSVS_CONTROL (0x01 << 25) /*
* 0 = lcd_lp and lcd_fp are driven on
* opposite edges of pixel clock than
* the lcd_pixel_o
* 1 = lcd_lp and lcd_fp are driven
* according to bit 24 Note that this
* bit MUST be set to '0' for Passive
* Matrix displays the edge timing is
* fixed
*/
#define HSVS_RISEFALL (0x01 << 24) /*
* 0 = lcd_lp and lcd_fp are driven on
* the rising edge of pixel clock (bit
* 25 must be set to 1)
* 1 = lcd_lp and lcd_fp are driven on
* the falling edge of pixel clock (bit
* 25 must be set to 1)
*/
#define DE_INVERT (0x01 << 23) /*
* 0 = DE is low-active
* 1 = DE is high-active
*/
#define PXCLK_INVERT (0x01 << 22) /*
* 0 = pix-clk is high-active
* 1 = pic-clk is low-active
*/
#define HSYNC_INVERT (0x01 << 21) /*
* 0 = HSYNC is active high
* 1 = HSYNC is avtive low
*/
#define VSYNC_INVERT (0x01 << 20) /*
* 0 = VSYNC is active high
* 1 = VSYNC is active low
*/
struct am335x_lcdpanel {
unsigned int hactive; /* Horizontal active area */
unsigned int vactive; /* Vertical active area */
unsigned int bpp; /* bits per pixel */
unsigned int hfp; /* Horizontal front porch */
unsigned int hbp; /* Horizontal back porch */
unsigned int hsw; /* Horizontal Sync Pulse Width */
unsigned int vfp; /* Vertical front porch */
unsigned int vbp; /* Vertical back porch */
unsigned int vsw; /* Vertical Sync Pulse Width */
unsigned int pxl_clk; /* Pixel clock */
unsigned int pol; /* polarity of sync, clock signals */
unsigned int pup_delay; /*
* time in ms after power on to
* initialization of lcd-controller
* (VCC ramp up time)
*/
unsigned int pon_delay; /*
* time in ms after initialization of
* lcd-controller (pic stabilization)
*/
void (*panel_power_ctrl)(int); /* fp for power on/off display */
};
int am335xfb_init(struct am335x_lcdpanel *panel);
#endif /* AM335X_FB_H */
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