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dma: coh901318: skip hard-coded addresses 

Remove hard-coded target addresses altogether. Skip the prefix
"runtime_*" from the variables, since all of these are now
runtime and their names are unique enough already.

Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2013-01-04 13:50:49 +01:00
parent 250eac8027
commit 9aab4d6f08
2 changed files with 13 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-u300/include/mach/coh901318.h
View File

@ -56,7 +56,6 @@ struct coh901318_params {
* @desc_nbr_max: number of preallocated descriptors
* @priority_high: prio of channel, 0 low otherwise high.
* @param: configuration parameters
* @dev_addr: physical address of periphal connected to channel
*/
struct coh_dma_channel {
const char name[32];
@ -64,7 +63,6 @@ struct coh_dma_channel {
const int desc_nbr_max;
const int priority_high;
const struct coh901318_params param;
const dma_addr_t dev_addr;
};
/**

35
drivers/dma/coh901318.c
View File

@ -1141,8 +1141,8 @@ struct coh901318_chan {
unsigned long nbr_active_done;
unsigned long busy;
u32 runtime_addr;
u32 runtime_ctrl;
u32 addr;
u32 ctrl;
struct coh901318_base *base;
};
@ -1253,15 +1253,6 @@ static inline struct coh901318_chan *to_coh901318_chan(struct dma_chan *chan)
return container_of(chan, struct coh901318_chan, chan);
}
static inline dma_addr_t
cohc_dev_addr(struct coh901318_chan *cohc)
{
/* Runtime supplied address will take precedence */
if (cohc->runtime_addr)
return cohc->runtime_addr;
return cohc->base->platform->chan_conf[cohc->id].dev_addr;
}
static inline const struct coh901318_params *
cohc_chan_param(struct coh901318_chan *cohc)
{
@ -2118,9 +2109,9 @@ coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
* sure the bits you set per peripheral channel are
* cleared in the default config from the platform.
*/
ctrl_chained |= cohc->runtime_ctrl;
ctrl_last |= cohc->runtime_ctrl;
ctrl |= cohc->runtime_ctrl;
ctrl_chained |= cohc->ctrl;
ctrl_last |= cohc->ctrl;
ctrl |= cohc->ctrl;
if (direction == DMA_MEM_TO_DEV) {
u32 tx_flags = COH901318_CX_CTRL_PRDD_SOURCE |
@ -2169,7 +2160,7 @@ coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
/* initiate allocated lli list */
ret = coh901318_lli_fill_sg(&cohc->base->pool, lli, sgl, sg_len,
cohc_dev_addr(cohc),
cohc->addr,
ctrl_chained,
ctrl,
ctrl_last,
@ -2310,7 +2301,7 @@ static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
dma_addr_t addr;
enum dma_slave_buswidth addr_width;
u32 maxburst;
u32 runtime_ctrl = 0;
u32 ctrl = 0;
int i = 0;
/* We only support mem to per or per to mem transfers */
@ -2331,7 +2322,7 @@ static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
addr_width);
switch (addr_width) {
case DMA_SLAVE_BUSWIDTH_1_BYTE:
runtime_ctrl |=
ctrl |=
COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS |
COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS;
@ -2343,7 +2334,7 @@ static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
break;
case DMA_SLAVE_BUSWIDTH_2_BYTES:
runtime_ctrl |=
ctrl |=
COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS |
COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS;
@ -2356,7 +2347,7 @@ static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
break;
case DMA_SLAVE_BUSWIDTH_4_BYTES:
/* Direction doesn't matter here, it's 32/32 bits */
runtime_ctrl |=
ctrl |=
COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS;
@ -2373,13 +2364,13 @@ static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
return;
}
runtime_ctrl |= burst_sizes[i].reg;
ctrl |= burst_sizes[i].reg;
dev_dbg(COHC_2_DEV(cohc),
"selected burst size %d bytes for address width %d bytes, maxburst %d\n",
burst_sizes[i].burst_8bit, addr_width, maxburst);
cohc->runtime_addr = addr;
cohc->runtime_ctrl = runtime_ctrl;
cohc->addr = addr;
cohc->ctrl = ctrl;
}
static int