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| author | Jens Arnold <amiconn@rockbox.org> | 2010-06-04 21:12:06 +0000 |
|---|---|---|
| committer | Jens Arnold <amiconn@rockbox.org> | 2010-06-04 21:12:06 +0000 |
| commit | 081bda8ab258c763e654067740f365be68269340 (patch) | |
| tree | 6c259a698a78d16c967952c3c9fe5504e9b21bc4 | |
| parent | b91fa0425090536a254e25807e75ff624c07d503 (diff) | |
| download | rockbox-081bda8ab258c763e654067740f365be68269340.tar.gz rockbox-081bda8ab258c763e654067740f365be68269340.zip | |
Port greylib blitting optimisation to clipv1.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26557 a1c6a512-1295-4272-9138-f99709370657
| -rw-r--r-- | firmware/target/arm/as3525/sansa-clip/lcd-as-clip.S | 46 |
1 files changed, 17 insertions, 29 deletions
diff --git a/firmware/target/arm/as3525/sansa-clip/lcd-as-clip.S b/firmware/target/arm/as3525/sansa-clip/lcd-as-clip.S index 5a52eb032c..942ddf79f8 100644 --- a/firmware/target/arm/as3525/sansa-clip/lcd-as-clip.S +++ b/firmware/target/arm/as3525/sansa-clip/lcd-as-clip.S | |||
| @@ -56,42 +56,30 @@ lcd_grey_data: | |||
| 56 | ldr lr, =DBOP_BASE | 56 | ldr lr, =DBOP_BASE |
| 57 | 57 | ||
| 58 | .greyloop: | 58 | .greyloop: |
| 59 | ldmia r1, {r3-r4} /* Fetch 8 pixel phases */ | ||
| 60 | ldmia r0!, {r5-r6} /* Fetch 8 pixel values */ | ||
| 61 | 59 | ||
| 62 | mov r7, #0 | 60 | ldmia r1, {r3-r4} |
| 63 | 61 | ||
| 64 | /* set bits 15..12 */ | 62 | and r5, r12, r3 @ r5 = 3.......2.......1.......0....... |
| 65 | tst r3, #0x80 | 63 | and r6, r12, r4 @ r6 = 7.......6.......5.......4....... |
| 66 | orrne r7, r7, #0x8000 | 64 | orr r5, r5, r6, lsr #4 @ r5 = 3...7...2...6...1...5...0...4... |
| 67 | tst r3, #0x8000 | 65 | orr r5, r5, r5, lsr #9 @ r5 = 3...7...23..67..12..56..01..45.. |
| 68 | orrne r7, r7, #0x4000 | 66 | orr r5, r5, r5, lsr #9 @ r5 = 3...7...23..67..123.567.012.456. |
| 69 | tst r3, #0x800000 | 67 | orr r5, r5, r5, lsr #9 @ r5 = 3...7...23..67..123.567.01234567 |
| 70 | orrne r7, r7, #0x2000 | 68 | and r5, r5, #0xff |
| 71 | tst r3, #0x80000000 | 69 | orr r5, r5, r5, lsl #8 @ post processing for clipv1 LCD */ |
| 72 | orrne r7, r7, #0x1000 | 70 | |
| 71 | ldmia r0!, {r6-r7} | ||
| 73 | bic r3, r3, r12 | 72 | bic r3, r3, r12 |
| 74 | add r3, r3, r5 | 73 | add r3, r3, r6 |
| 75 | |||
| 76 | /* set bits 3..0 */ | ||
| 77 | tst r4, #0x80 | ||
| 78 | orrne r7, r7, #0x08 | ||
| 79 | tst r4, #0x8000 | ||
| 80 | orrne r7, r7, #0x04 | ||
| 81 | tst r4, #0x800000 | ||
| 82 | orrne r7, r7, #0x02 | ||
| 83 | tst r4, #0x80000000 | ||
| 84 | orrne r7, r7, #0x01 | ||
| 85 | bic r4, r4, r12 | 74 | bic r4, r4, r12 |
| 86 | add r4, r4, r6 | 75 | add r4, r4, r7 |
| 87 | |||
| 88 | stmia r1!, {r3-r4} | 76 | stmia r1!, {r3-r4} |
| 89 | 77 | ||
| 90 | strh r7, [lr, #0x10] @ DBOP_DOUT | 78 | strh r5, [lr, #0x10] @ DBOP_DOUT |
| 91 | 79 | ||
| 92 | 1: | 80 | 1: |
| 93 | ldr r5, [lr, #0xC] @ DBOP_STAT | 81 | ldr r6, [lr, #0xC] @ DBOP_STAT |
| 94 | ands r5, r5, #(1<<6) @ wait until push fifo is full | 82 | ands r6, r6, #(1<<6) @ wait until push fifo is full |
| 95 | bne 1b | 83 | bne 1b |
| 96 | 84 | ||
| 97 | subs r2, r2, #1 | 85 | subs r2, r2, #1 |