From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: "Bryan O'Donoghue" <pure.logic@nexus-software.ie>,
Peter Hurley <peter@hurleysoftware.com>,
linux-serial@vger.kernel.org, Vinod Koul <vinod.koul@intel.com>,
linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
ismo.puustinen@intel.com,
Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v2 01/11] dmaengine: dw: keep copy of custom slave config in dwc
Date: Mon, 11 Apr 2016 15:51:01 +0300 [thread overview]
Message-ID: <1460379071-132591-2-git-send-email-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <1460379071-132591-1-git-send-email-andriy.shevchenko@linux.intel.com>
It seems we need to extend custom slave configuration by one more member to
support Intel Quart UART. It becomes a burden to manage all members of struct
dw_dma_slave one-by-one.
Replace set of fields by embedding struct dw_dma_slave into struct dw_dma_chan.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/dma/dw/core.c | 29 ++++++++++-------------------
drivers/dma/dw/regs.h | 5 +----
2 files changed, 11 insertions(+), 23 deletions(-)
diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
index 2b994dc..f586ba1 100644
--- a/drivers/dma/dw/core.c
+++ b/drivers/dma/dw/core.c
@@ -46,9 +46,9 @@
u8 _dmsize = _is_slave ? _sconfig->dst_maxburst : \
DW_DMA_MSIZE_16; \
u8 _dms = (_dwc->direction == DMA_MEM_TO_DEV) ? \
- _dwc->p_master : _dwc->m_master; \
+ _dwc->dws.p_master : _dwc->dws.m_master; \
u8 _sms = (_dwc->direction == DMA_DEV_TO_MEM) ? \
- _dwc->p_master : _dwc->m_master; \
+ _dwc->dws.p_master : _dwc->dws.m_master; \
\
(DWC_CTLL_DST_MSIZE(_dmsize) \
| DWC_CTLL_SRC_MSIZE(_smsize) \
@@ -140,8 +140,8 @@ static void dwc_initialize(struct dw_dma_chan *dwc)
if (test_bit(DW_DMA_IS_INITIALIZED, &dwc->flags))
return;
- cfghi |= DWC_CFGH_DST_PER(dwc->dst_id);
- cfghi |= DWC_CFGH_SRC_PER(dwc->src_id);
+ cfghi |= DWC_CFGH_DST_PER(dwc->dws.dst_id);
+ cfghi |= DWC_CFGH_SRC_PER(dwc->dws.src_id);
channel_writel(dwc, CFG_LO, cfglo);
channel_writel(dwc, CFG_HI, cfghi);
@@ -202,7 +202,7 @@ static inline void dwc_do_single_block(struct dw_dma_chan *dwc,
static void dwc_dostart(struct dw_dma_chan *dwc, struct dw_desc *first)
{
struct dw_dma *dw = to_dw_dma(dwc->chan.device);
- u8 lms = DWC_LLP_LMS(dwc->m_master);
+ u8 lms = DWC_LLP_LMS(dwc->dws.m_master);
unsigned long was_soft_llp;
/* ASSERT: channel is idle */
@@ -686,7 +686,7 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
unsigned int src_width;
unsigned int dst_width;
u32 ctllo;
- u8 lms = DWC_LLP_LMS(dwc->m_master);
+ u8 lms = DWC_LLP_LMS(dwc->dws.m_master);
dev_vdbg(chan2dev(chan),
"%s: d%pad s%pad l0x%zx f0x%lx\n", __func__,
@@ -759,7 +759,7 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
struct dw_desc *prev;
struct dw_desc *first;
u32 ctllo;
- u8 lms = DWC_LLP_LMS(dwc->m_master);
+ u8 lms = DWC_LLP_LMS(dwc->dws.m_master);
dma_addr_t reg;
unsigned int reg_width;
unsigned int mem_width;
@@ -912,12 +912,7 @@ bool dw_dma_filter(struct dma_chan *chan, void *param)
return false;
/* We have to copy data since dws can be temporary storage */
-
- dwc->src_id = dws->src_id;
- dwc->dst_id = dws->dst_id;
-
- dwc->m_master = dws->m_master;
- dwc->p_master = dws->p_master;
+ memcpy(&dwc->dws, dws, sizeof(struct dw_dma_slave));
return true;
}
@@ -1224,11 +1219,7 @@ static void dwc_free_chan_resources(struct dma_chan *chan)
dwc->descs_allocated = 0;
/* Clear custom channel configuration */
- dwc->src_id = 0;
- dwc->dst_id = 0;
-
- dwc->m_master = 0;
- dwc->p_master = 0;
+ memset(&dwc->dws, 0, sizeof(struct dw_dma_slave));
clear_bit(DW_DMA_IS_INITIALIZED, &dwc->flags);
@@ -1326,7 +1317,7 @@ struct dw_cyclic_desc *dw_dma_cyclic_prep(struct dma_chan *chan,
struct dw_cyclic_desc *retval = NULL;
struct dw_desc *desc;
struct dw_desc *last = NULL;
- u8 lms = DWC_LLP_LMS(dwc->m_master);
+ u8 lms = DWC_LLP_LMS(dwc->dws.m_master);
unsigned long was_cyclic;
unsigned int reg_width;
unsigned int periods;
diff --git a/drivers/dma/dw/regs.h b/drivers/dma/dw/regs.h
index 5b3ea2d..f9e56f9 100644
--- a/drivers/dma/dw/regs.h
+++ b/drivers/dma/dw/regs.h
@@ -246,10 +246,7 @@ struct dw_dma_chan {
bool nollp;
/* custom slave configuration */
- u8 src_id;
- u8 dst_id;
- u8 m_master;
- u8 p_master;
+ struct dw_dma_slave dws;
/* configuration passed via .device_config */
struct dma_slave_config dma_sconfig;
--
2.8.0.rc3
next prev parent reply other threads:[~2016-04-11 12:51 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-11 12:51 [PATCH v2 00/11] serial: 8250: split LPSS to 8250_lpss, enable DMA on Quark Andy Shevchenko
2016-04-11 12:51 ` Andy Shevchenko [this message]
2016-04-11 12:51 ` [PATCH v2 02/11] dmaengine: dw: provide probe(), remove() stubs for users Andy Shevchenko
2016-04-11 12:51 ` [PATCH v2 03/11] dmaengine: dw: set polarity of handshake interface Andy Shevchenko
2016-04-11 12:51 ` [PATCH v2 04/11] dmaengine: dw: override LLP support if asked in platform data Andy Shevchenko
2016-04-11 12:51 ` [PATCH v2 05/11] serial: 8250_dma: switch to new dmaengine_terminate_* API Andy Shevchenko
2016-04-12 6:45 ` Heikki Krogerus
2016-04-11 12:51 ` [PATCH v2 06/11] serial: 8250_dma: adjust DMA address of the UART Andy Shevchenko
2016-04-12 6:46 ` Heikki Krogerus
2016-04-11 12:51 ` [PATCH v2 07/11] serial: 8250: enable AFE on ports where FIFO is 16 bytes Andy Shevchenko
2016-04-11 14:53 ` Peter Hurley
2016-04-11 12:51 ` [PATCH v2 08/11] serial: 8250_lpss: split LPSS driver to separate module Andy Shevchenko
2016-04-11 12:51 ` [PATCH v2 09/11] serial: 8250_lpss: move Quark code from PCI driver Andy Shevchenko
2016-04-11 12:51 ` [PATCH v2 10/11] serial: 8250_lpss: enable MSI for Intel Quark Andy Shevchenko
2016-04-11 12:51 ` [PATCH v2 11/11] serial: 8250_lpss: enable DMA on Intel Quark UART Andy Shevchenko
2016-04-20 13:29 ` [PATCH v2 00/11] serial: 8250: split LPSS to 8250_lpss, enable DMA on Quark Vinod Koul
2016-04-20 14:05 ` Andy Shevchenko
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