43f847d0b9
Migrating the TI nspire calculators to use the PL111 driver for framebuffer requires grayscale support for the elder panel which uses 8bit grayscale only. DRM does not support 8bit grayscale framebuffers in memory, but by defining the bus format to be MEDIA_BUS_FMT_Y8_1X8 we can get the hardware to turn on a grayscaling feature and convert the RGB framebuffer to grayscale for us. Cc: Daniel Tang <dt.tangr@gmail.com> Cc: Fabian Vogt <fabian@ritter-vogt.de> Tested-by: Fabian Vogt <fabian@ritter-vogt.de> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190805085847.25554-2-linus.walleij@linaro.org
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/*
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* David A Rusling
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*
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* Copyright (C) 2001 ARM Limited
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*/
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#ifndef AMBA_CLCD_REGS_H
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#define AMBA_CLCD_REGS_H
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/*
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* CLCD Controller Internal Register addresses
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*/
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#define CLCD_TIM0 0x00000000
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#define CLCD_TIM1 0x00000004
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#define CLCD_TIM2 0x00000008
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#define CLCD_TIM3 0x0000000c
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#define CLCD_UBAS 0x00000010
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#define CLCD_LBAS 0x00000014
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#define CLCD_PL110_IENB 0x00000018
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#define CLCD_PL110_CNTL 0x0000001c
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#define CLCD_PL110_STAT 0x00000020
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#define CLCD_PL110_INTR 0x00000024
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#define CLCD_PL110_UCUR 0x00000028
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#define CLCD_PL110_LCUR 0x0000002C
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#define CLCD_PL111_CNTL 0x00000018
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#define CLCD_PL111_IENB 0x0000001c
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#define CLCD_PL111_RIS 0x00000020
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#define CLCD_PL111_MIS 0x00000024
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#define CLCD_PL111_ICR 0x00000028
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#define CLCD_PL111_UCUR 0x0000002c
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#define CLCD_PL111_LCUR 0x00000030
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#define CLCD_PALL 0x00000200
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#define CLCD_PALETTE 0x00000200
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#define TIM2_PCD_LO_MASK GENMASK(4, 0)
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#define TIM2_PCD_LO_BITS 5
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#define TIM2_CLKSEL (1 << 5)
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#define TIM2_ACB_MASK GENMASK(10, 6)
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#define TIM2_IVS (1 << 11)
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#define TIM2_IHS (1 << 12)
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#define TIM2_IPC (1 << 13)
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#define TIM2_IOE (1 << 14)
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#define TIM2_BCD (1 << 26)
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#define TIM2_PCD_HI_MASK GENMASK(31, 27)
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#define TIM2_PCD_HI_BITS 5
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#define TIM2_PCD_HI_SHIFT 27
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#define CNTL_LCDEN (1 << 0)
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#define CNTL_LCDBPP1 (0 << 1)
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#define CNTL_LCDBPP2 (1 << 1)
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#define CNTL_LCDBPP4 (2 << 1)
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#define CNTL_LCDBPP8 (3 << 1)
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#define CNTL_LCDBPP16 (4 << 1)
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#define CNTL_LCDBPP16_565 (6 << 1)
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#define CNTL_LCDBPP16_444 (7 << 1)
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#define CNTL_LCDBPP24 (5 << 1)
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#define CNTL_LCDBW (1 << 4)
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#define CNTL_LCDTFT (1 << 5)
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#define CNTL_LCDMONO8 (1 << 6)
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#define CNTL_LCDDUAL (1 << 7)
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#define CNTL_BGR (1 << 8)
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#define CNTL_BEBO (1 << 9)
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#define CNTL_BEPO (1 << 10)
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#define CNTL_LCDPWR (1 << 11)
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#define CNTL_LCDVCOMP(x) ((x) << 12)
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#define CNTL_LDMAFIFOTIME (1 << 15)
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#define CNTL_WATERMARK (1 << 16)
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/* ST Microelectronics variant bits */
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#define CNTL_ST_1XBPP_444 0x0
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#define CNTL_ST_1XBPP_5551 (1 << 17)
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#define CNTL_ST_1XBPP_565 (1 << 18)
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#define CNTL_ST_CDWID_12 0x0
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#define CNTL_ST_CDWID_16 (1 << 19)
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#define CNTL_ST_CDWID_18 (1 << 20)
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#define CNTL_ST_CDWID_24 ((1 << 19)|(1 << 20))
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#define CNTL_ST_CEAEN (1 << 21)
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#define CNTL_ST_LCDBPP24_PACKED (6 << 1)
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#endif /* AMBA_CLCD_REGS_H */
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