michaelh/zephyr
1
0
Fork 0
Code Releases Activity

usb: driver: Reduce Endpoint buffer pool.

Browse source 
IN Endpoints does not require to have initialized internal
buffer. The data send are not copied to the internal buffer
anymore. This patch reduces memory usage for IN Endpoints.

Signed-off-by: Emil Obalski <emil.obalski@nordicsemi.no>
This commit is contained in:
Emil Obalski 2020-10-20 12:56:37 +02:00 • committed by Carles Cufí
commit b3c63425a0
1 changed files with 1 additions and 22 deletions
Download patch file Download diff file Expand all files Collapse all files

23
drivers/usb/device/usb_dc_nrfx.c
View file

@ -219,9 +219,7 @@ K_MEM_POOL_DEFINE(fifo_elem_pool, FIFO_ELEM_MIN_SZ, FIFO_ELEM_MAX_SZ,
CFG_EPOUT_CNT + CFG_EP_ISOOUT_CNT)
/** Total buffer size for all endpoints */
#define EP_BUF_TOTAL ((CFG_EPIN_CNT * EP_BUF_MAX_SZ) + \
(CFG_EPOUT_CNT * EP_BUF_MAX_SZ) + \
(CFG_EP_ISOIN_CNT * ISO_EP_BUF_MAX_SZ) + \
#define EP_BUF_TOTAL ((CFG_EPOUT_CNT * EP_BUF_MAX_SZ) + \
(CFG_EP_ISOOUT_CNT * ISO_EP_BUF_MAX_SZ))
/** Total number of maximum sized buffers needed */
@ -631,15 +629,6 @@ static int eps_ctx_init(void)
ep_ctx = in_endpoint_ctx(i);
__ASSERT_NO_MSG(ep_ctx);
if (!ep_ctx->buf.block.data) {
err = k_mem_pool_alloc(&ep_buf_pool, &ep_ctx->buf.block,
EP_BUF_MAX_SZ, K_NO_WAIT);
if (err < 0) {
LOG_ERR("Buffer alloc failed for EP 0x%02x", i);
return -ENOMEM;
}
}
ep_ctx_reset(ep_ctx);
}
@ -663,16 +652,6 @@ static int eps_ctx_init(void)
ep_ctx = in_endpoint_ctx(NRF_USBD_EPIN(8));
__ASSERT_NO_MSG(ep_ctx);
if (!ep_ctx->buf.block.data) {
err = k_mem_pool_alloc(&ep_buf_pool, &ep_ctx->buf.block,
ISO_EP_BUF_MAX_SZ,
K_NO_WAIT);
if (err < 0) {
LOG_ERR("EP buffer alloc failed for ISOIN");
return -ENOMEM;
}
}
ep_ctx_reset(ep_ctx);
}