linux-stable/arch/xtensa/platforms/xtfpga/include/platform/lcd.h
Max Filippov 4949009eb8 xtensa: xtfpga: fix hardware lockup caused by LCD driver
LCD driver is always built for the XTFPGA platform, but its base address
is not configurable, and is wrong for ML605/KC705. Its initialization
locks up KC705 board hardware.

Make the whole driver optional, and its base address and bus width
configurable. Implement 4-bit bus access method.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2015-02-27 07:55:29 +03:00

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C

/*
* arch/xtensa/platform/xtavnet/include/platform/lcd.h
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2001, 2006 Tensilica Inc.
*/
#ifndef __XTENSA_XTAVNET_LCD_H
#define __XTENSA_XTAVNET_LCD_H
#ifdef CONFIG_XTFPGA_LCD
/* Display string STR at position POS on the LCD. */
void lcd_disp_at_pos(char *str, unsigned char pos);
/* Shift the contents of the LCD display left or right. */
void lcd_shiftleft(void);
void lcd_shiftright(void);
#else
static inline void lcd_disp_at_pos(char *str, unsigned char pos)
{
}
static inline void lcd_shiftleft(void)
{
}
static inline void lcd_shiftright(void)
{
}
#endif
#endif