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author | Hannes Petermaier <oe5hpm@oevsv.at> | 2014-03-06 13:39:06 (GMT) |
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committer | Anatolij Gustschin <agust@denx.de> | 2014-08-10 13:34:27 (GMT) |
commit | 3c5fabd13993172e6c29500cc78de8ef7c1abbc0 (patch) | |
tree | 266e7bcdcd39ae8d39021d63264c1b5835a770fb /drivers/video/am335x-fb.h | |
parent | 8d9eaafdd12991b92c265ae6380972bc3afea41c (diff) | |
download | u-boot-3c5fabd13993172e6c29500cc78de8ef7c1abbc0.tar.xz |
video: Add support for TI's AM335x LCD-Controller
- Adds support for a minimal framebuffer driver of TI's AM335x SoC
to be compatible with Wolfgang Denk's LCD-Framework (CONFIG_LCD,
common/lcd.c)
Signed-off-by: Hannes Petermaier <oe5hpm@oevsv.at>
Diffstat (limited to 'drivers/video/am335x-fb.h')
-rw-r--r-- | drivers/video/am335x-fb.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/video/am335x-fb.h b/drivers/video/am335x-fb.h new file mode 100644 index 0000000..8a0b131 --- /dev/null +++ b/drivers/video/am335x-fb.h @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2013 Hannes Petermaier <oe5hpm@oevsv.at> - + * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#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_div; /* Pixel clock divider*/ + unsigned int pol; /* polarity of sync, clock signals */ + unsigned int pon_delay; /* + * time in ms for turning on lcd after + * initializing lcd-controller + */ + void (*panel_power_ctrl)(int); /* fp for power on/off display */ +}; + +int am335xfb_init(struct am335x_lcdpanel *panel); + +#endif /* AM335X_FB_H */ |