diff options
Diffstat (limited to 'chip/ish/dma.c')
| -rw-r--r-- | chip/ish/dma.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/chip/ish/dma.c b/chip/ish/dma.c index b9744fd234..48a27a0463 100644 --- a/chip/ish/dma.c +++ b/chip/ish/dma.c @@ -1,4 +1,4 @@ -/* Copyright 2019 The Chromium OS Authors. All rights reserved. +/* Copyright 2019 The ChromiumOS Authors * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ @@ -112,8 +112,8 @@ int ish_dma_copy(uint32_t chan, uint32_t dst, uint32_t src, uint32_t length, mode |= NON_SNOOP; MISC_DMA_CTL_REG(chan) = mode; /* Set transfer direction */ - DMA_CFG_REG = DMA_ENABLE; /* Enable DMA module */ - DMA_LLP(chan_reg) = 0; /* Linked lists are not used */ + DMA_CFG_REG = DMA_ENABLE; /* Enable DMA module */ + DMA_LLP(chan_reg) = 0; /* Linked lists are not used */ DMA_CTL_LOW(chan_reg) = 0 /* Set transfer parameters */ | (DMA_CTL_TT_FC_M2M_DMAC << DMA_CTL_TT_FC_SHIFT) | @@ -126,24 +126,27 @@ int ish_dma_copy(uint32_t chan, uint32_t dst, uint32_t src, uint32_t length, interrupt_unlock(eflags); while (length) { - chunk = (length > DMA_MAX_BLOCK_SIZE) ? DMA_MAX_BLOCK_SIZE - : length; + chunk = (length > DMA_MAX_BLOCK_SIZE) ? DMA_MAX_BLOCK_SIZE : + length; if (rc != DMA_RC_OK) break; eflags = interrupt_lock(); MISC_CHID_CFG_REG = chan; /* Set channel to configure */ - DMA_CTL_HIGH(chan_reg) = - chunk; /* Set number of bytes to transfer */ + DMA_CTL_HIGH(chan_reg) = chunk; /* Set number of bytes to + transfer */ DMA_DAR(chan_reg) = dst; /* Destination address */ DMA_SAR(chan_reg) = src; /* Source address */ DMA_EN_REG = DMA_CH_EN_BIT(chan) | - DMA_CH_EN_WE_BIT(chan); /* Enable the channel */ + DMA_CH_EN_WE_BIT(chan); /* Enable + the + channel + */ interrupt_unlock(eflags); - rc = ish_wait_for_dma_done( - chan); /* Wait for trans completion */ + rc = ish_wait_for_dma_done(chan); /* Wait for trans completion + */ dst += chunk; src += chunk; |