forked from len0rd/rockbox
Greyscale ipod lcd driver: * Assembler optimised low level functions. PP5002 targets benefit most (lcd_update() speedup >50%, and the greyscale overlay no longer makes mp3 playback skip). * Consistent brace placement style.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16060 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold
parent
9f686700d4
commit
41cd44caa7
3 changed files with 339 additions and 134 deletions
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@ -694,6 +694,7 @@ target/arm/ata-pp5020.c
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target/arm/ipod/adc-ipod-pcf.c
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target/arm/ipod/backlight-4g_color.c
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target/arm/ipod/button-clickwheel.c
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target/arm/ipod/lcd-as-gray.S
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target/arm/ipod/lcd-gray.c
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target/arm/ipod/power-ipod.c
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target/arm/ipod/powermgmt-ipod-pcf.c
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@ -762,6 +763,7 @@ target/arm/i2s-pp.c
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target/arm/ipod/adc-ipod-pcf.c
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target/arm/ipod/3g/backlight-3g.c
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target/arm/ipod/button-1g-3g.c
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target/arm/ipod/lcd-as-gray.S
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target/arm/ipod/lcd-gray.c
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target/arm/ipod/power-ipod.c
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target/arm/ipod/powermgmt-ipod-pcf.c
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@ -778,6 +780,7 @@ target/arm/ipod/1g2g/adc-ipod-1g2g.c
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target/arm/ipod/1g2g/backlight-1g2g.c
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target/arm/ipod/1g2g/powermgmt-1g2g.c
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target/arm/ipod/button-1g-3g.c
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target/arm/ipod/lcd-as-gray.S
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target/arm/ipod/lcd-gray.c
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target/arm/ipod/power-ipod.c
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target/arm/usb-fw-pp5002.c
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@ -794,6 +797,7 @@ target/arm/i2s-pp.c
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target/arm/ipod/adc-ipod-pcf.c
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target/arm/ipod/backlight-mini1g_mini2g.c
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target/arm/ipod/button-mini1g.c
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target/arm/ipod/lcd-as-gray.S
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target/arm/ipod/lcd-gray.c
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target/arm/ipod/power-ipod.c
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target/arm/ipod/powermgmt-ipod-pcf.c
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@ -811,6 +815,7 @@ target/arm/i2s-pp.c
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target/arm/ipod/adc-ipod-pcf.c
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target/arm/ipod/backlight-mini1g_mini2g.c
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target/arm/ipod/button-clickwheel.c
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target/arm/ipod/lcd-as-gray.S
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target/arm/ipod/lcd-gray.c
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target/arm/ipod/power-ipod.c
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target/arm/ipod/powermgmt-ipod-pcf.c
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290
firmware/target/arm/ipod/lcd-as-gray.S
Normal file
290
firmware/target/arm/ipod/lcd-as-gray.S
Normal file
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@ -0,0 +1,290 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2008 by Jens Arnold
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "cpu.h"
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#if CONFIG_CPU == PP5002
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.section .icode,"ax",%progbits
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#else
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.text
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#endif
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.align 2
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.global lcd_write_data
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.type lcd_write_data,%function
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lcd_write_data:
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stmfd sp!, {r4, lr}
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ldr r2, =LCD1_BASE
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.loop:
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ldrb r3, [r0], #1
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#ifdef IPOD_MINI2G
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ldrb r4, [r0], #1
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orr r3, r4, r3, lsl #8
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orr r3, r3, #0x760000
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1:
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ldr r4, [r2]
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tst r4, #0x8000
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bne 1b
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str r3, [r2, #0x08]
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#else
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1:
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ldr r4, [r2]
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tst r4, #0x8000
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bne 1b
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str r3, [r2, #0x10]
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ldrb r3, [r0], #1
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1:
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ldr r4, [r2]
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tst r4, #0x8000
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bne 1b
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str r3, [r2, #0x10]
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#endif
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subs r1, r1, #1
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bne .loop
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ldmfd sp!, {r4, pc}
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.wd_end:
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.size lcd_write_data,.wd_end-lcd_write_data
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#ifdef IPOD_MINI2G
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.global lcd_write_data_shifted
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.type lcd_write_data_shifted,%function
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lcd_write_data_shifted:
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stmfd sp!, {r4-r6, lr}
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ldr r2, =LCD1_BASE
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mov r6, #0x760000
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ldrb r3, [r0], #1
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.sloop:
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ldrb r4, [r0], #1
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orr r3, r4, r3, lsl #8
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ldrb r4, [r0], #1
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orr r3, r4, r3, lsl #8
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mov r5, r3, lsl #12
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orr r5, r6, r5, lsr #16
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1:
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ldr r4, [r2]
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tst r4, #0x8000
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bne 1b
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str r5, [r2, #0x08]
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subs r1, r1, #1
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bne .sloop
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ldmfd sp!, {r4-r6, pc}
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.wds_end:
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.size lcd_write_data_shifted,.wds_end-lcd_write_data_shifted
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#elif defined IPOD_MINI
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.global lcd_write_data_shifted
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.type lcd_write_data_shifted,%function
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lcd_write_data_shifted:
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stmfd sp!, {r4, r5, lr}
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ldr r2, =LCD1_BASE
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ldrb r3, [r0], #1
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.sloop:
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ldrb r4, [r0], #1
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orr r3, r4, r3, lsl #8
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mov r5, r3, lsr #4
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1:
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ldr r4, [r2]
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tst r4, #0x8000
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bne 1b
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str r5, [r2, #0x10]
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ldrb r4, [r0], #1
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orr r3, r4, r3, lsl #8
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mov r5, r3, lsr #4
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1:
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ldr r4, [r2]
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tst r4, #0x8000
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bne 1b
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str r5, [r2, #0x10]
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subs r1, r1, #1
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bne .sloop
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ldmfd sp!, {r4, r5, pc}
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.wds_end:
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.size lcd_write_data_shifted,.wds_end-lcd_write_data_shifted
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#endif
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.global lcd_mono_data
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.type lcd_mono_data,%function
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lcd_mono_data:
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stmfd sp!, {r4-r6, lr}
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ldr r2, =LCD1_BASE
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adr r6, .dibits
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.mloop:
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ldrb r3, [r0], #1
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mov r4, r3, lsr #4
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ldrb r5, [r6, r4]
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#ifdef IPOD_MINI2G
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and r4, r3, #0x0f
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ldrb r4, [r6, r4]
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orr r5, r4, r5, lsl #8
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orr r5, r5, #0x760000
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1:
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ldr r4, [r2]
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tst r4, #0x8000
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bne 1b
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str r5, [r2, #0x08]
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#else
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1:
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ldr r4, [r2]
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tst r4, #0x8000
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bne 1b
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str r5, [r2, #0x10]
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and r4, r3, #0x0f
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ldrb r5, [r6, r4]
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1:
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ldr r4, [r2]
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tst r4, #0x8000
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bne 1b
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str r5, [r2, #0x10]
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#endif
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subs r1, r1, #1
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bne .mloop
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ldmfd sp!, {r4-r6, pc}
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.dibits:
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.byte 0x00, 0x03, 0x0C, 0x0F, 0x30, 0x33, 0x3C, 0x3F
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.byte 0xC0, 0xC3, 0xCC, 0xCF, 0xF0, 0xF3, 0xFC, 0xFF
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.md_end:
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.size lcd_mono_data,.md_end-lcd_mono_data
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.global lcd_grey_data
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.type lcd_grey_data,%function
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/* A high performance function to write grey phase data to the display,
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* one or multiple pixels.
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*
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* Arguments:
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* r0 - pixel value data address
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* r1 - pixel phase data address
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* r2 - pixel block count
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*
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* Register usage:
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* r3/r4 - current block of phases
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* r5/r6 - current block of values
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* r7 - lcd data accumulator
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* r8 - phase signs mask
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* r9 - lcd bridge address
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*/
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lcd_grey_data:
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stmfd sp!, {r4-r9, lr}
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mov r8, #0x80
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orr r8, r8, r8, lsl #8
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orr r8, r8, r8, lsl #16
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ldr r9, =LCD1_BASE
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.greyloop:
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ldmia r1, {r3-r4} /* Fetch 8 pixel phases */
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ldmia r0!, {r5-r6} /* Fetch 8 pixel values */
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#ifdef IPOD_MINI2G /* Serial bridge mode */
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mov r7, #0x760000
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tst r3, #0x80
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orreq r7, r7, #0xc000
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tst r3, #0x8000
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orreq r7, r7, #0x3000
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tst r3, #0x800000
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orreq r7, r7, #0x0c00
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tst r3, #0x80000000
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orreq r7, r7, #0x0300
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bic r3, r3, r8
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add r3, r3, r5
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#else /* Parallel bridge mode */
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mov r7, #0
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tst r3, #0x80
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orreq r7, r7, #0xc0
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tst r3, #0x8000
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orreq r7, r7, #0x30
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tst r3, #0x800000
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orreq r7, r7, #0x0c
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tst r3, #0x80000000
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orreq r7, r7, #0x03
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bic r3, r3, r8
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add r3, r3, r5
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1:
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ldr r5, [r9]
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tst r5, #0x8000
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bne 1b
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str r7, [r9, #0x10]
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mov r7, #0
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#endif
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tst r4, #0x80
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orreq r7, r7, #0xc0
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tst r4, #0x8000
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orreq r7, r7, #0x30
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tst r4, #0x800000
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orreq r7, r7, #0x0c
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tst r4, #0x80000000
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orreq r7, r7, #0x03
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bic r4, r4, r8
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add r4, r4, r6
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stmia r1!, {r3-r4}
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1:
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ldr r5, [r9]
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tst r5, #0x8000
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bne 1b
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#ifdef IPOD_MINI2G
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str r7, [r9, #0x08]
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#else
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str r7, [r9, #0x10]
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#endif
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subs r2, r2, #1
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bne .greyloop
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ldmfd sp!, {r4-r9, pc}
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.gd_end:
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.size lcd_grey_data,.gd_end-lcd_grey_data
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@ -74,36 +74,15 @@ static unsigned short contrast_reg_h;
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static int addr_offset;
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#if defined(IPOD_MINI) || defined(IPOD_MINI2G)
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static int pix_offset;
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void lcd_write_data_shifted(const fb_data* p_bytes, int count);
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#endif
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static const unsigned char dibits[16] ICONST_ATTR = {
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0x00, 0x03, 0x0C, 0x0F, 0x30, 0x33, 0x3C, 0x3F,
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0xC0, 0xC3, 0xCC, 0xCF, 0xF0, 0xF3, 0xFC, 0xFF
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};
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/* wait for LCD with timeout */
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static inline void lcd_wait_write(void)
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{
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while (LCD1_CONTROL & LCD1_BUSY_MASK);
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}
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/* send LCD data */
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#if CONFIG_CPU == PP5002
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STATICIRAM void ICODE_ATTR lcd_send_data(unsigned data)
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#else
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static void lcd_send_data(unsigned data)
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#endif
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{
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lcd_wait_write();
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#ifdef IPOD_MINI2G
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LCD1_CMD = data | 0x760000;
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#else
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LCD1_DATA = data >> 8;
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lcd_wait_write();
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LCD1_DATA = data & 0xff;
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#endif
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}
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/* send LCD command */
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static void lcd_prepare_cmd(unsigned cmd)
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{
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@ -120,8 +99,20 @@ static void lcd_prepare_cmd(unsigned cmd)
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/* send LCD command and data */
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static void lcd_cmd_and_data(unsigned cmd, unsigned data)
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{
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lcd_prepare_cmd(cmd);
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lcd_send_data(data);
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lcd_wait_write();
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#ifdef IPOD_MINI2G
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LCD1_CMD = cmd | 0x740000;
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lcd_wait_write();
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LCD1_CMD = data | 0x760000;
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#else
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LCD1_CMD = 0;
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lcd_wait_write();
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LCD1_CMD = cmd;
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lcd_wait_write();
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LCD1_DATA = data >> 8;
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lcd_wait_write();
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LCD1_DATA = data & 0xff;
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#endif
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}
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/* LCD init */
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@ -230,27 +221,29 @@ void lcd_set_invert_display(bool yesno)
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void lcd_set_flip(bool yesno)
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{
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#if defined(IPOD_MINI) || defined(IPOD_MINI2G)
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if (yesno) {
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/* 168x112, inverse COM order */
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if (yesno)
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{ /* 168x112, inverse COM order */
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lcd_cmd_and_data(R_DRV_OUTPUT_CONTROL, 0x020d);
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lcd_cmd_and_data(R_1ST_SCR_DRV_POS, 0x8316); /* 22..131 */
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addr_offset = (22 << 5) | (20 - 4);
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pix_offset = -2;
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} else {
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/* 168x112, inverse SEG order */
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}
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else
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{ /* 168x112, inverse SEG order */
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lcd_cmd_and_data(R_DRV_OUTPUT_CONTROL, 0x010d);
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lcd_cmd_and_data(R_1ST_SCR_DRV_POS, 0x6d00); /* 0..109 */
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addr_offset = 20;
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pix_offset = 0;
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}
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#else
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if (yesno) {
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/* 168x128, inverse SEG & COM order */
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if (yesno)
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{ /* 168x128, inverse SEG & COM order */
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lcd_cmd_and_data(R_DRV_OUTPUT_CONTROL, 0x030f);
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lcd_cmd_and_data(R_1ST_SCR_DRV_POS, 0x8304); /* 4..131 */
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addr_offset = (4 << 5) | (20 - 1);
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} else {
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/* 168x128 */
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}
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else
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{ /* 168x128 */
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lcd_cmd_and_data(R_DRV_OUTPUT_CONTROL, 0x000f);
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lcd_cmd_and_data(R_1ST_SCR_DRV_POS, 0x7f00); /* 0..127 */
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addr_offset = 20;
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@ -279,108 +272,38 @@ void lcd_enable(bool on)
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/*** update functions ***/
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/* Helper function. */
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void lcd_mono_data(const unsigned char *data, int count);
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/* Performance function that works with an external buffer
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note that x, bwidtht and stride are in 8-pixel units! */
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void lcd_blit(const unsigned char* data, int bx, int y, int bwidth,
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int height, int stride)
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{
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const unsigned char *src, *src_end;
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while (height--) {
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src = data;
|
||||
src_end = data + bwidth;
|
||||
while (height--)
|
||||
{
|
||||
lcd_cmd_and_data(R_RAM_ADDR_SET, (y++ << 5) + addr_offset - bx);
|
||||
lcd_prepare_cmd(R_RAM_DATA);
|
||||
do {
|
||||
unsigned byte = *src++;
|
||||
lcd_send_data((dibits[byte>>4] << 8) | dibits[byte&0x0f]);
|
||||
} while (src < src_end);
|
||||
|
||||
lcd_mono_data(data, bwidth);
|
||||
data += stride;
|
||||
}
|
||||
}
|
||||
|
||||
/* Helper function for lcd_grey_phase_blit(). */
|
||||
void lcd_grey_data(unsigned char *values, unsigned char *phases, int count);
|
||||
|
||||
/* Performance function that works with an external buffer
|
||||
note that bx and bwidth are in 8-pixel units! */
|
||||
void lcd_grey_phase_blit(unsigned char *values, unsigned char *phases,
|
||||
int bx, int y, int bwidth, int height, int stride)
|
||||
{
|
||||
unsigned char *val, *ph;
|
||||
int bw;
|
||||
|
||||
while (height--) {
|
||||
while (height--)
|
||||
{
|
||||
lcd_cmd_and_data(R_RAM_ADDR_SET, (y++ << 5) + addr_offset - bx);
|
||||
lcd_prepare_cmd(R_RAM_DATA);
|
||||
|
||||
val = values;
|
||||
ph = phases;
|
||||
bw = bwidth;
|
||||
asm volatile (
|
||||
"10: \n"
|
||||
"ldmia %[ph], {r0-r1} \n" /* Fetch 8 pixel phases */
|
||||
"ldmia %[val]!, {r2-r3} \n" /* Fetch 8 pixel values */
|
||||
#ifdef IPOD_MINI2G
|
||||
"mov r4, #0x7600 \n"
|
||||
#else
|
||||
"mov r4, #0 \n"
|
||||
#endif
|
||||
"tst r0, #0x80 \n"
|
||||
"orreq r4, r4, #0xc0 \n"
|
||||
"tst r0, #0x8000 \n"
|
||||
"orreq r4, r4, #0x30 \n"
|
||||
"tst r0, #0x800000 \n"
|
||||
"orreq r4, r4, #0x0c \n"
|
||||
"tst r0, #0x80000000 \n"
|
||||
"orreq r4, r4, #0x03 \n"
|
||||
"bic r0, r0, %[clbt] \n"
|
||||
"add r0, r0, r2 \n"
|
||||
|
||||
#ifdef IPOD_MINI2G
|
||||
"mov r4, r4, lsl #8 \n"
|
||||
#else
|
||||
"1: \n"
|
||||
"ldr r2, [%[lcdb]] \n"
|
||||
"tst r2, #0x8000 \n"
|
||||
"bne 1b \n"
|
||||
|
||||
"str r4, [%[lcdb], #0x10] \n"
|
||||
"mov r4, #0 \n"
|
||||
#endif
|
||||
|
||||
"tst r1, #0x80 \n"
|
||||
"orreq r4, r4, #0xc0 \n"
|
||||
"tst r1, #0x8000 \n"
|
||||
"orreq r4, r4, #0x30 \n"
|
||||
"tst r1, #0x800000 \n"
|
||||
"orreq r4, r4, #0x0c \n"
|
||||
"tst r1, #0x80000000 \n"
|
||||
"orreq r4, r4, #0x03 \n"
|
||||
"bic r1, r1, %[clbt] \n"
|
||||
"add r1, r1, r3 \n"
|
||||
|
||||
"stmia %[ph]!, {r0-r1} \n"
|
||||
|
||||
"1: \n"
|
||||
"ldr r2, [%[lcdb]] \n"
|
||||
"tst r2, #0x8000 \n"
|
||||
"bne 1b \n"
|
||||
#ifdef IPOD_MINI2G
|
||||
"str r4, [%[lcdb], #0x08] \n"
|
||||
#else
|
||||
"str r4, [%[lcdb], #0x10] \n"
|
||||
#endif
|
||||
|
||||
"subs %[bw], %[bw], #1 \n"
|
||||
"bne 10b \n"
|
||||
: /* outputs */
|
||||
[val]"+r"(val),
|
||||
[ph] "+r"(ph),
|
||||
[bw] "+r"(bw)
|
||||
: /* inputs */
|
||||
[clbt]"r"(0x80808080),
|
||||
[lcdb]"r"(LCD1_BASE)
|
||||
: /* clobbers */
|
||||
"r0", "r1", "r2", "r3", "r4"
|
||||
);
|
||||
lcd_grey_data(values, phases, bwidth);
|
||||
values += stride;
|
||||
phases += stride;
|
||||
}
|
||||
|
|
@ -407,30 +330,17 @@ void lcd_update_rect(int x, int y, int width, int height)
|
|||
x >>= 3;
|
||||
width = xmax - x + 1;
|
||||
|
||||
for (; y <= ymax; y++) {
|
||||
unsigned char *data, *data_end;
|
||||
|
||||
for (; y <= ymax; y++)
|
||||
{
|
||||
lcd_cmd_and_data(R_RAM_ADDR_SET, (y << 5) + addr_offset - x);
|
||||
lcd_prepare_cmd(R_RAM_DATA);
|
||||
|
||||
data = &lcd_framebuffer[y][2*x];
|
||||
data_end = data + 2 * width;
|
||||
#if defined(IPOD_MINI) || defined(IPOD_MINI2G)
|
||||
if (pix_offset == -2) {
|
||||
unsigned cur_word = *data++;
|
||||
do {
|
||||
cur_word = (cur_word << 8) | *data++;
|
||||
cur_word = (cur_word << 8) | *data++;
|
||||
lcd_send_data((cur_word >> 4) & 0xffff);
|
||||
} while (data <= data_end);
|
||||
} else
|
||||
if (pix_offset == -2)
|
||||
lcd_write_data_shifted(&lcd_framebuffer[y][2*x], width);
|
||||
else
|
||||
#endif
|
||||
{
|
||||
do {
|
||||
unsigned highbyte = *data++;
|
||||
lcd_send_data((highbyte << 8) | *data++);
|
||||
} while (data < data_end);
|
||||
}
|
||||
lcd_write_data(&lcd_framebuffer[y][2*x], width);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue