Getting OpenCL to work with Intel iGPUs?

[`Orum]

I'm trying to get an Intel HD 530 to show up as a valid OpenCL device, but try as I might, I've been unsuccessful so far. I've installed intel-compute-runtime, and drm-kmod (and loaded the driver), but it's still not listed by clinfo. I've also added the account running it to the 'video' group, but this hasn't changed anything. The CPU is listed, as I have installed pocl, but no GPU. Is there something I still need to install to get it working?

Some additional info, from pciconf -lcbv:

vgapci0@pci0:0:2:0:     class=0x030000 card=0x07a31028 chip=0x19128086 rev=0x06 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'HD Graphics 530'
    class      = display
    subclass   = VGA
    bar   [10] = type Memory, range 64, base 0xf6000000, size 16777216, enabled
    bar   [18] = type Prefetchable Memory, range 64, base 0xe0000000, size 268435456, enabled
    bar   [20] = type I/O Port, range 32, base 0xf000, size 64, enabled
    cap 09[40] = vendor (length 12) Intel cap 0 version 1
    cap 10[70] = PCI-Express 2 root endpoint max data 128(128) FLR
    cap 05[ac] = MSI supports 1 message
    cap 01[d0] = powerspec 2  supports D0 D3  current D0
    ecap 001b[100] = unknown 1
    ecap 000f[200] = ATS 1
    ecap 0013[300] = unknown 1