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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /arch/arc/lib/memcmp.S
downloadlinux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz
linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'arch/arc/lib/memcmp.S')
-rw-r--r--arch/arc/lib/memcmp.S149
1 files changed, 149 insertions, 0 deletions
diff --git a/arch/arc/lib/memcmp.S b/arch/arc/lib/memcmp.S
new file mode 100644
index 000000000..d6dc5e9bc
--- /dev/null
+++ b/arch/arc/lib/memcmp.S
@@ -0,0 +1,149 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
+ */
+
+#include <linux/linkage.h>
+
+#ifdef __LITTLE_ENDIAN__
+#define WORD2 r2
+#define SHIFT r3
+#else /* BIG ENDIAN */
+#define WORD2 r3
+#define SHIFT r2
+#endif
+
+ENTRY_CFI(memcmp)
+ or r12,r0,r1
+ asl_s r12,r12,30
+ sub r3,r2,1
+ brls r2,r12,.Lbytewise
+ ld r4,[r0,0]
+ ld r5,[r1,0]
+ lsr.f lp_count,r3,3
+#ifdef CONFIG_ISA_ARCV2
+ /* In ARCv2 a branch can't be the last instruction in a zero overhead
+ * loop.
+ * So we move the branch to the start of the loop, duplicate it
+ * after the end, and set up r12 so that the branch isn't taken
+ * initially.
+ */
+ mov_s r12,WORD2
+ lpne .Loop_end
+ brne WORD2,r12,.Lodd
+ ld WORD2,[r0,4]
+#else
+ lpne .Loop_end
+ ld_s WORD2,[r0,4]
+#endif
+ ld_s r12,[r1,4]
+ brne r4,r5,.Leven
+ ld.a r4,[r0,8]
+ ld.a r5,[r1,8]
+#ifdef CONFIG_ISA_ARCV2
+.Loop_end:
+ brne WORD2,r12,.Lodd
+#else
+ brne WORD2,r12,.Lodd
+.Loop_end:
+#endif
+ asl_s SHIFT,SHIFT,3
+ bhs_s .Last_cmp
+ brne r4,r5,.Leven
+ ld r4,[r0,4]
+ ld r5,[r1,4]
+#ifdef __LITTLE_ENDIAN__
+ nop_s
+ ; one more load latency cycle
+.Last_cmp:
+ xor r0,r4,r5
+ bset r0,r0,SHIFT
+ sub_s r1,r0,1
+ bic_s r1,r1,r0
+ norm r1,r1
+ b.d .Leven_cmp
+ and r1,r1,24
+.Leven:
+ xor r0,r4,r5
+ sub_s r1,r0,1
+ bic_s r1,r1,r0
+ norm r1,r1
+ ; slow track insn
+ and r1,r1,24
+.Leven_cmp:
+ asl r2,r4,r1
+ asl r12,r5,r1
+ lsr_s r2,r2,1
+ lsr_s r12,r12,1
+ j_s.d [blink]
+ sub r0,r2,r12
+ .balign 4
+.Lodd:
+ xor r0,WORD2,r12
+ sub_s r1,r0,1
+ bic_s r1,r1,r0
+ norm r1,r1
+ ; slow track insn
+ and r1,r1,24
+ asl_s r2,r2,r1
+ asl_s r12,r12,r1
+ lsr_s r2,r2,1
+ lsr_s r12,r12,1
+ j_s.d [blink]
+ sub r0,r2,r12
+#else /* BIG ENDIAN */
+.Last_cmp:
+ neg_s SHIFT,SHIFT
+ lsr r4,r4,SHIFT
+ lsr r5,r5,SHIFT
+ ; slow track insn
+.Leven:
+ sub.f r0,r4,r5
+ mov.ne r0,1
+ j_s.d [blink]
+ bset.cs r0,r0,31
+.Lodd:
+ cmp_s WORD2,r12
+ mov_s r0,1
+ j_s.d [blink]
+ bset.cs r0,r0,31
+#endif /* ENDIAN */
+ .balign 4
+.Lbytewise:
+ breq r2,0,.Lnil
+ ldb r4,[r0,0]
+ ldb r5,[r1,0]
+ lsr.f lp_count,r3
+#ifdef CONFIG_ISA_ARCV2
+ mov r12,r3
+ lpne .Lbyte_end
+ brne r3,r12,.Lbyte_odd
+#else
+ lpne .Lbyte_end
+#endif
+ ldb_s r3,[r0,1]
+ ldb r12,[r1,1]
+ brne r4,r5,.Lbyte_even
+ ldb.a r4,[r0,2]
+ ldb.a r5,[r1,2]
+#ifdef CONFIG_ISA_ARCV2
+.Lbyte_end:
+ brne r3,r12,.Lbyte_odd
+#else
+ brne r3,r12,.Lbyte_odd
+.Lbyte_end:
+#endif
+ bcc .Lbyte_even
+ brne r4,r5,.Lbyte_even
+ ldb_s r3,[r0,1]
+ ldb_s r12,[r1,1]
+.Lbyte_odd:
+ j_s.d [blink]
+ sub r0,r3,r12
+.Lbyte_even:
+ j_s.d [blink]
+ sub r0,r4,r5
+.Lnil:
+ j_s.d [blink]
+ mov r0,0
+END_CFI(memcmp)