diff options
| author | Sinan Kaya <okaya@codeaurora.org> | 2017-06-29 22:30:57 -0400 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2017-07-19 09:33:21 +0530 |
| commit | 5e2db086be4fc77c7715297ffdf929e7a8a55041 (patch) | |
| tree | c40fbb2b7072f517e7a527c3b2597f3cf11e8bad /drivers/dma/qcom/hidma_ll.c | |
| parent | 5771a8c08880cdca3bfb4a3fc6d309d6bba20877 (diff) | |
| download | linux-5e2db086be4fc77c7715297ffdf929e7a8a55041.tar.bz2 | |
dmaengine: qcom_hidma: introduce memset support
HIDMA HW supports memset operation in addition to memcpy.
Since the memset API is present on the kernel now, bring the
memset feature into life.
The descriptor format is the same for both memcpy and memset.
Type of the descriptor is 4 when memset is requested.
The lowest 8 bits of the source DMA argument is used as a
fill pattern.
Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/qcom/hidma_ll.c')
| -rw-r--r-- | drivers/dma/qcom/hidma_ll.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/dma/qcom/hidma_ll.c b/drivers/dma/qcom/hidma_ll.c index 1530a661518d..4999e266b2de 100644 --- a/drivers/dma/qcom/hidma_ll.c +++ b/drivers/dma/qcom/hidma_ll.c @@ -105,10 +105,6 @@ enum ch_state { HIDMA_CH_STOPPED = 4, }; -enum tre_type { - HIDMA_TRE_MEMCPY = 3, -}; - enum err_code { HIDMA_EVRE_STATUS_COMPLETE = 1, HIDMA_EVRE_STATUS_ERROR = 4, @@ -174,8 +170,7 @@ int hidma_ll_request(struct hidma_lldev *lldev, u32 sig, const char *dev_name, tre->err_info = 0; tre->lldev = lldev; tre_local = &tre->tre_local[0]; - tre_local[HIDMA_TRE_CFG_IDX] = HIDMA_TRE_MEMCPY; - tre_local[HIDMA_TRE_CFG_IDX] |= (lldev->chidx & 0xFF) << 8; + tre_local[HIDMA_TRE_CFG_IDX] = (lldev->chidx & 0xFF) << 8; tre_local[HIDMA_TRE_CFG_IDX] |= BIT(16); /* set IEOB */ *tre_ch = i; if (callback) @@ -607,7 +602,7 @@ int hidma_ll_disable(struct hidma_lldev *lldev) void hidma_ll_set_transfer_params(struct hidma_lldev *lldev, u32 tre_ch, dma_addr_t src, dma_addr_t dest, u32 len, - u32 flags) + u32 flags, u32 txntype) { struct hidma_tre *tre; u32 *tre_local; @@ -626,6 +621,8 @@ void hidma_ll_set_transfer_params(struct hidma_lldev *lldev, u32 tre_ch, } tre_local = &tre->tre_local[0]; + tre_local[HIDMA_TRE_CFG_IDX] &= ~GENMASK(7, 0); + tre_local[HIDMA_TRE_CFG_IDX] |= txntype; tre_local[HIDMA_TRE_LEN_IDX] = len; tre_local[HIDMA_TRE_SRC_LOW_IDX] = lower_32_bits(src); tre_local[HIDMA_TRE_SRC_HI_IDX] = upper_32_bits(src); |