diff options
| author | Zhao Qiang <B45475@freescale.com> | 2014-10-10 10:38:48 +0800 |
|---|---|---|
| committer | Dong Aisheng <aisheng.dong@nxp.com> | 2019-11-25 16:32:06 +0800 |
| commit | 4e02081fa81ddd9c893e3ce11c4a341b8439e6ed (patch) | |
| tree | 6f26de7286e1452e00056e2ea6b0bbd4a1ae09e6 /arch/arm/include | |
| parent | d761bbdcfe9e31ed05cc19f7b377a3efc39c00fd (diff) | |
arch: arm: add ARM specific fucntions required for ehci fsl driver
Add below functions for ARM platform which are used by ehci fsl driver:
1. spin_event_timeout function
2. set/clear bits functions
Signed-off-by: Zhao Qiang <B45475@freescale.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/delay.h | 16 | ||||
| -rw-r--r-- | arch/arm/include/asm/io.h | 28 |
2 files changed, 44 insertions, 0 deletions
diff --git a/arch/arm/include/asm/delay.h b/arch/arm/include/asm/delay.h index 4f80b72372b4..f1aebe735321 100644 --- a/arch/arm/include/asm/delay.h +++ b/arch/arm/include/asm/delay.h @@ -85,6 +85,22 @@ extern void __bad_udelay(void); __const_udelay((n) * UDELAY_MULT)) : \ __udelay(n)) +#define spin_event_timeout(condition, timeout, delay) \ +({ \ + typeof(condition) __ret; \ + int i = 0; \ + while (!(__ret = (condition)) && (i++ < timeout)) { \ + if (delay) \ + udelay(delay); \ + else \ + cpu_relax(); \ + udelay(1); \ + } \ + if (!__ret) \ + __ret = (condition); \ + __ret; \ +}) + /* Loop-based definitions for assembly code. */ extern void __loop_delay(unsigned long loops); extern void __loop_udelay(unsigned long usecs); diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h index 7a0596fcb2e7..9dffeacde7ba 100644 --- a/arch/arm/include/asm/io.h +++ b/arch/arm/include/asm/io.h @@ -224,6 +224,34 @@ void __iomem *pci_remap_cfgspace(resource_size_t res_cookie, size_t size); #endif #endif +/* access ports */ +#define setbits32(_addr, _v) iowrite32be(ioread32be(_addr) | (_v), (_addr)) +#define clrbits32(_addr, _v) iowrite32be(ioread32be(_addr) & ~(_v), (_addr)) + +#define setbits16(_addr, _v) iowrite16be(ioread16be(_addr) | (_v), (_addr)) +#define clrbits16(_addr, _v) iowrite16be(ioread16be(_addr) & ~(_v), (_addr)) + +#define setbits8(_addr, _v) iowrite8(ioread8(_addr) | (_v), (_addr)) +#define clrbits8(_addr, _v) iowrite8(ioread8(_addr) & ~(_v), (_addr)) + +/* Clear and set bits in one shot. These macros can be used to clear and + * set multiple bits in a register using a single read-modify-write. These + * macros can also be used to set a multiple-bit bit pattern using a mask, + * by specifying the mask in the 'clear' parameter and the new bit pattern + * in the 'set' parameter. + */ + +#define clrsetbits_be32(addr, clear, set) \ + iowrite32be((ioread32be(addr) & ~(clear)) | (set), (addr)) +#define clrsetbits_le32(addr, clear, set) \ + iowrite32le((ioread32le(addr) & ~(clear)) | (set), (addr)) +#define clrsetbits_be16(addr, clear, set) \ + iowrite16be((ioread16be(addr) & ~(clear)) | (set), (addr)) +#define clrsetbits_le16(addr, clear, set) \ + iowrite16le((ioread16le(addr) & ~(clear)) | (set), (addr)) +#define clrsetbits_8(addr, clear, set) \ + iowrite8((ioread8(addr) & ~(clear)) | (set), (addr)) + /* * IO port access primitives * ------------------------- |