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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-24 08:46:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-24 08:46:03 -0700 |
| commit | cf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch) | |
| tree | 757a3d280760c654767631cab5ad8af2d86d1848 /arch/parisc/lib/io.c | |
| download | linux-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/parisc/lib/io.c')
| -rw-r--r-- | arch/parisc/lib/io.c | 381 |
1 files changed, 381 insertions, 0 deletions
diff --git a/arch/parisc/lib/io.c b/arch/parisc/lib/io.c new file mode 100644 index 000000000..3c7e617f5 --- /dev/null +++ b/arch/parisc/lib/io.c @@ -0,0 +1,381 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * arch/parisc/lib/io.c + * + * Copyright (c) Matthew Wilcox 2001 for Hewlett-Packard + * Copyright (c) Randolph Chung 2001 <tausq@debian.org> + * + * IO accessing functions which shouldn't be inlined because they're too big + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <asm/io.h> + +/* + * Read COUNT 8-bit bytes from port PORT into memory starting at + * SRC. + */ +void insb (unsigned long port, void *dst, unsigned long count) +{ + unsigned char *p; + + p = (unsigned char *)dst; + + while (((unsigned long)p) & 0x3) { + if (!count) + return; + count--; + *p = inb(port); + p++; + } + + while (count >= 4) { + unsigned int w; + count -= 4; + w = inb(port) << 24; + w |= inb(port) << 16; + w |= inb(port) << 8; + w |= inb(port); + *(unsigned int *) p = w; + p += 4; + } + + while (count) { + --count; + *p = inb(port); + p++; + } +} + + +/* + * Read COUNT 16-bit words from port PORT into memory starting at + * SRC. SRC must be at least short aligned. This is used by the + * IDE driver to read disk sectors. Performance is important, but + * the interfaces seems to be slow: just using the inlined version + * of the inw() breaks things. + */ +void insw (unsigned long port, void *dst, unsigned long count) +{ + unsigned int l = 0, l2; + unsigned char *p; + + p = (unsigned char *)dst; + + if (!count) + return; + + switch (((unsigned long)p) & 0x3) + { + case 0x00: /* Buffer 32-bit aligned */ + while (count>=2) { + + count -= 2; + l = cpu_to_le16(inw(port)) << 16; + l |= cpu_to_le16(inw(port)); + *(unsigned int *)p = l; + p += 4; + } + if (count) { + *(unsigned short *)p = cpu_to_le16(inw(port)); + } + break; + + case 0x02: /* Buffer 16-bit aligned */ + *(unsigned short *)p = cpu_to_le16(inw(port)); + p += 2; + count--; + while (count>=2) { + + count -= 2; + l = cpu_to_le16(inw(port)) << 16; + l |= cpu_to_le16(inw(port)); + *(unsigned int *)p = l; + p += 4; + } + if (count) { + *(unsigned short *)p = cpu_to_le16(inw(port)); + } + break; + + case 0x01: /* Buffer 8-bit aligned */ + case 0x03: + /* I don't bother with 32bit transfers + * in this case, 16bit will have to do -- DE */ + --count; + + l = cpu_to_le16(inw(port)); + *p = l >> 8; + p++; + while (count--) + { + l2 = cpu_to_le16(inw(port)); + *(unsigned short *)p = (l & 0xff) << 8 | (l2 >> 8); + p += 2; + l = l2; + } + *p = l & 0xff; + break; + } +} + + + +/* + * Read COUNT 32-bit words from port PORT into memory starting at + * SRC. Now works with any alignment in SRC. Performance is important, + * but the interfaces seems to be slow: just using the inlined version + * of the inl() breaks things. + */ +void insl (unsigned long port, void *dst, unsigned long count) +{ + unsigned int l = 0, l2; + unsigned char *p; + + p = (unsigned char *)dst; + + if (!count) + return; + + switch (((unsigned long) dst) & 0x3) + { + case 0x00: /* Buffer 32-bit aligned */ + while (count--) + { + *(unsigned int *)p = cpu_to_le32(inl(port)); + p += 4; + } + break; + + case 0x02: /* Buffer 16-bit aligned */ + --count; + + l = cpu_to_le32(inl(port)); + *(unsigned short *)p = l >> 16; + p += 2; + + while (count--) + { + l2 = cpu_to_le32(inl(port)); + *(unsigned int *)p = (l & 0xffff) << 16 | (l2 >> 16); + p += 4; + l = l2; + } + *(unsigned short *)p = l & 0xffff; + break; + case 0x01: /* Buffer 8-bit aligned */ + --count; + + l = cpu_to_le32(inl(port)); + *(unsigned char *)p = l >> 24; + p++; + *(unsigned short *)p = (l >> 8) & 0xffff; + p += 2; + while (count--) + { + l2 = cpu_to_le32(inl(port)); + *(unsigned int *)p = (l & 0xff) << 24 | (l2 >> 8); + p += 4; + l = l2; + } + *p = l & 0xff; + break; + case 0x03: /* Buffer 8-bit aligned */ + --count; + + l = cpu_to_le32(inl(port)); + *p = l >> 24; + p++; + while (count--) + { + l2 = cpu_to_le32(inl(port)); + *(unsigned int *)p = (l & 0xffffff) << 8 | l2 >> 24; + p += 4; + l = l2; + } + *(unsigned short *)p = (l >> 8) & 0xffff; + p += 2; + *p = l & 0xff; + break; + } +} + + +/* + * Like insb but in the opposite direction. + * Don't worry as much about doing aligned memory transfers: + * doing byte reads the "slow" way isn't nearly as slow as + * doing byte writes the slow way (no r-m-w cycle). + */ +void outsb(unsigned long port, const void * src, unsigned long count) +{ + const unsigned char *p; + + p = (const unsigned char *)src; + while (count) { + count--; + outb(*p, port); + p++; + } +} + +/* + * Like insw but in the opposite direction. This is used by the IDE + * driver to write disk sectors. Performance is important, but the + * interfaces seems to be slow: just using the inlined version of the + * outw() breaks things. + */ +void outsw (unsigned long port, const void *src, unsigned long count) +{ + unsigned int l = 0, l2; + const unsigned char *p; + + p = (const unsigned char *)src; + + if (!count) + return; + + switch (((unsigned long)p) & 0x3) + { + case 0x00: /* Buffer 32-bit aligned */ + while (count>=2) { + count -= 2; + l = *(unsigned int *)p; + p += 4; + outw(le16_to_cpu(l >> 16), port); + outw(le16_to_cpu(l & 0xffff), port); + } + if (count) { + outw(le16_to_cpu(*(unsigned short*)p), port); + } + break; + + case 0x02: /* Buffer 16-bit aligned */ + + outw(le16_to_cpu(*(unsigned short*)p), port); + p += 2; + count--; + + while (count>=2) { + count -= 2; + l = *(unsigned int *)p; + p += 4; + outw(le16_to_cpu(l >> 16), port); + outw(le16_to_cpu(l & 0xffff), port); + } + if (count) { + outw(le16_to_cpu(*(unsigned short *)p), port); + } + break; + + case 0x01: /* Buffer 8-bit aligned */ + /* I don't bother with 32bit transfers + * in this case, 16bit will have to do -- DE */ + + l = *p << 8; + p++; + count--; + while (count) + { + count--; + l2 = *(unsigned short *)p; + p += 2; + outw(le16_to_cpu(l | l2 >> 8), port); + l = l2 << 8; + } + l2 = *(unsigned char *)p; + outw (le16_to_cpu(l | l2>>8), port); + break; + + } +} + + +/* + * Like insl but in the opposite direction. This is used by the IDE + * driver to write disk sectors. Works with any alignment in SRC. + * Performance is important, but the interfaces seems to be slow: + * just using the inlined version of the outl() breaks things. + */ +void outsl (unsigned long port, const void *src, unsigned long count) +{ + unsigned int l = 0, l2; + const unsigned char *p; + + p = (const unsigned char *)src; + + if (!count) + return; + + switch (((unsigned long)p) & 0x3) + { + case 0x00: /* Buffer 32-bit aligned */ + while (count--) + { + outl(le32_to_cpu(*(unsigned int *)p), port); + p += 4; + } + break; + + case 0x02: /* Buffer 16-bit aligned */ + --count; + + l = *(unsigned short *)p; + p += 2; + + while (count--) + { + l2 = *(unsigned int *)p; + p += 4; + outl (le32_to_cpu(l << 16 | l2 >> 16), port); + l = l2; + } + l2 = *(unsigned short *)p; + outl (le32_to_cpu(l << 16 | l2), port); + break; + case 0x01: /* Buffer 8-bit aligned */ + --count; + + l = *p << 24; + p++; + l |= *(unsigned short *)p << 8; + p += 2; + + while (count--) + { + l2 = *(unsigned int *)p; + p += 4; + outl (le32_to_cpu(l | l2 >> 24), port); + l = l2 << 8; + } + l2 = *p; + outl (le32_to_cpu(l | l2), port); + break; + case 0x03: /* Buffer 8-bit aligned */ + --count; + + l = *p << 24; + p++; + + while (count--) + { + l2 = *(unsigned int *)p; + p += 4; + outl (le32_to_cpu(l | l2 >> 8), port); + l = l2 << 24; + } + l2 = *(unsigned short *)p << 16; + p += 2; + l2 |= *p; + outl (le32_to_cpu(l | l2), port); + break; + } +} + +EXPORT_SYMBOL(insb); +EXPORT_SYMBOL(insw); +EXPORT_SYMBOL(insl); +EXPORT_SYMBOL(outsb); +EXPORT_SYMBOL(outsw); +EXPORT_SYMBOL(outsl); |
