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soc: ti: k3-navss-ringacc: Add AM64 ringacc support

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AM64 dual mode rings are modeled as pair of Rings objects which has common
configuration and memory buffer, but separate real-time control register
sets for each direction mem2dev (forward) and dev2mem (reverse).

AM64 rings must be requested only using k3_ringacc_request_rings_pair(),
and forward ring must always be initialized/configured. After this any
other Ringacc APIs can be used without any callers changes.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
This commit is contained in:
Vignesh Raghavendra 2021-05-10 20:06:03 +05:30 • committed by Lokesh Vutla
parent 91f1e792fe
commit c409b4932d
2 changed files with 283 additions and 5 deletions
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15
include/linux/soc/ti/k3-navss-ringacc.h
View file

@ -238,4 +238,19 @@ int k3_nav_ringacc_ring_push_head(struct k3_nav_ring *ring, void *elem);
*/
int k3_nav_ringacc_ring_pop_tail(struct k3_nav_ring *ring, void *elem);
/* DMA ring support */
struct ti_sci_handle;
/**
* struct struct k3_ringacc_init_data - Initialization data for DMA rings
*/
struct k3_ringacc_init_data {
const struct ti_sci_handle *tisci;
u32 tisci_dev_id;
u32 num_rings;
};
struct k3_nav_ringacc *k3_ringacc_dmarings_init(struct udevice *dev,
struct k3_ringacc_init_data *data);
#endif /* __SOC_TI_K3_NAVSS_RINGACC_API_H_ */