diff options
| author | Zhou Peng <eagle.zhou@nxp.com> | 2018-06-15 13:09:05 +0800 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-24 12:41:33 +0300 |
| commit | f06102570ff4bdafb8a6f4868f2c6529d8caa31d (patch) | |
| tree | 43a3fda8a50191ad858e3ced4a9f64f7fac461ca /drivers/mxc | |
| parent | 7903a7422a2685ff801f166e280791dbd07ec1e2 (diff) | |
MLK-18593 - [i.MX8MM/Hantro] Add support for android platform
Add mmap to allow application map vpu h1 registers from user space
Signed-off-by: Zhou Peng <eagle.zhou@nxp.com>
Diffstat (limited to 'drivers/mxc')
| -rwxr-xr-x | drivers/mxc/hantro_845_h1/hx280enc.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/mxc/hantro_845_h1/hx280enc.c b/drivers/mxc/hantro_845_h1/hx280enc.c index 236d18f8833f..0fd1c7c2f32a 100755 --- a/drivers/mxc/hantro_845_h1/hx280enc.c +++ b/drivers/mxc/hantro_845_h1/hx280enc.c @@ -147,6 +147,7 @@ static irqreturn_t hx280enc_isr(int irq, void *dev_id, struct pt_regs *regs); static irqreturn_t hx280enc_isr(int irq, void *dev_id); #endif +#ifdef VSI /* VM operations */ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 28)) static struct page *hx280enc_vm_nopage(struct vm_area_struct *vma, @@ -182,7 +183,7 @@ nopage:hx280enc_vm_nopage, fault:hx280enc_vm_fault, #endif }; - +#endif #ifndef VSI static int hantro_h1_clk_enable(struct device *dev) @@ -236,15 +237,26 @@ static int hantro_h1_ctrlblk_reset(struct device *dev) * vm_area_struct for us, so we examine this to see what was requested. */ -static int hx280enc_mmap(struct file *filp, struct vm_area_struct *vma) +static int hx280enc_mmap(struct file *filp, struct vm_area_struct *vm) { +#ifdef VSI int result = -EINVAL; result = -EINVAL; - vma->vm_ops = &hx280enc_vm_ops; - return result; +#else + if (vm->vm_pgoff == (hx280enc_data.iobaseaddr >> PAGE_SHIFT)) { + vm->vm_flags |= VM_IO; + vm->vm_page_prot = pgprot_noncached(vm->vm_page_prot); + PDEBUG("hx280enc mmap: size=0x%lX, page off=0x%lX\n", (vm->vm_end - vm->vm_start), vm->vm_pgoff); + return remap_pfn_range(vm, vm->vm_start, vm->vm_pgoff, vm->vm_end - vm->vm_start, + vm->vm_page_prot) ? -EAGAIN : 0; + } else { + pr_err("invalid map offset :0x%lX\n", vm->vm_pgoff); + return -EINVAL; + } +#endif } static long hx280enc_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |