Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c01cc53d authored by Michael Zoran's avatar Michael Zoran Committed by Greg Kroah-Hartman
Browse files

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: default avatarMichael Zoran <mzoran@crowfest.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent dc5424ae

drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c

+9 −0
Original line number Diff line number Diff line
@@ -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;