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>

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 */