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101 lines
4.0 KiB
C
101 lines
4.0 KiB
C
/* $Id: bt458.h,v 1.1 2007/01/07 23:22:21 fredette Exp $ */
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/* tme/ic/bt458.h - public header file for Brooktree Bt458 (and TI TLC34058) emulation */
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/*
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* Copyright (c) 2006 Matt Fredette
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Matt Fredette.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _TME_IC_BT458_H
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#define _TME_IC_BT458_H
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#include <tme/common.h>
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_TME_RCSID("$Id: bt458.h,v 1.1 2007/01/07 23:22:21 fredette Exp $");
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/* macros: */
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/* the bt458 control register addresses: */
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#define TME_BT458_REG_CONTROL_MASK_READ (0x04)
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#define TME_BT458_REG_CONTROL_MASK_BLINK (0x05)
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#define TME_BT458_REG_CONTROL_COMMAND (0x06)
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#define TME_BT458_REG_CONTROL_TEST (0x07)
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#define TME_BT458_REG_CONTROL_FIRST (TME_BT458_REG_CONTROL_MASK_READ)
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#define TME_BT458_REG_CONTROL_LAST (TME_BT458_REG_CONTROL_TEST)
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/* the bt458 command register: */
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#define TME_BT458_COMMAND_5PIXELS TME_BIT(7)
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#define TME_BT458_COMMAND_ENABLE_PALETTE TME_BIT(6)
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#define TME_BT458_COMMAND_BLINK_RATE_MASK (0x30)
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#define TME_BT458_COMMAND_BLINK_RATE_16_48 (0x00)
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#define TME_BT458_COMMAND_BLINK_RATE_16_16 (0x10)
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#define TME_BT458_COMMAND_BLINK_RATE_32_32 (0x20)
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#define TME_BT458_COMMAND_BLINK_RATE_64_64 (0x30)
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#define TME_BT458_COMMAND_ENABLE_BLINK_OL1 TME_BIT(3)
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#define TME_BT458_COMMAND_ENABLE_BLINK_OL0 TME_BIT(2)
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#define TME_BT458_COMMAND_ENABLE_DISPLAY_OL1 TME_BIT(1)
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#define TME_BT458_COMMAND_ENABLE_DISPLAY_OL0 TME_BIT(0)
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/* the bt458 state: */
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struct tme_bt458 {
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/* the bt458 address register: */
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tme_uint8_t tme_bt458_address;
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/* the bt458 rgb address register: */
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tme_uint8_t tme_bt458_rgb;
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/* the bt458 registers: */
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tme_uint8_t tme_bt458_regs[TME_BT458_REG_CONTROL_LAST + 1 - TME_BT458_REG_CONTROL_FIRST];
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/* the bt458 colormap: */
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tme_uint8_t *tme_bt458_cmap_primaries[3];
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#define tme_bt458_cmap_r tme_bt458_cmap_primaries[0]
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#define tme_bt458_cmap_g tme_bt458_cmap_primaries[1]
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#define tme_bt458_cmap_b tme_bt458_cmap_primaries[2]
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/* the bt458 overlay map: */
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tme_uint8_t tme_bt458_omap_primaries[3][4];
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#define tme_bt458_omap_r tme_bt458_omap_primaries[0]
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#define tme_bt458_omap_g tme_bt458_omap_primaries[1]
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#define tme_bt458_omap_b tme_bt458_omap_primaries[2]
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/* the closest regular colormap indices for the overlay map: */
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tme_uint8_t tme_bt458_omap_cmap_indices[4];
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};
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/* prototypes: */
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/* this updates the best regular colormap indices for the colors in
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the overlay map. it returns nonzero if any of them changed: */
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int tme_bt458_omap_best _TME_P((struct tme_bt458 *));
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#endif /* !_TME_IC_BT458_H */
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