diff options
| author | Michael Zoran <mzoran@crowfest.net> | 2016-11-01 00:02:03 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-07 13:02:45 +0300 |
| commit | c01cc53d4eb81a626ca289d784143f22c2fe63ab (patch) | |
| tree | 2e6c7cf2154aebe21520ef86edf2e447c2ecac6f | |
| parent | dc5424ae0be4409019bafc303720d8a33f5b23fe (diff) | |
| download | linux-c01cc53d4eb81a626ca289d784143f22c2fe63ab.tar.xz | |
staging: vc04_services: setup DMA and coherent mask
VCHI messages between the CPU and firmware use 32-bit
bus addresses. Explicitly set the DMA mask and coherent
on all platforms.
Signed-off-by: Michael Zoran <mzoran@crowfest.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c index 70807577641d..9f9a7d6991e4 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c @@ -97,6 +97,15 @@ int vchiq_platform_init(struct platform_device *pdev, VCHIQ_STATE_T *state) int slot_mem_size, frag_mem_size; int err, irq, i; + /* + * VCHI messages between the CPU and firmware use + * 32-bit bus addresses. + */ + err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); + + if (err < 0) + return err; + (void)of_property_read_u32(dev->of_node, "cache-line-size", &g_cache_line_size); g_fragments_size = 2 * g_cache_line_size; |