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dmaengine/amba-pl08x: Take flow controller info from DMA_SLAVE_CONFIG

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Flow controller information is passed now from DMA_SLAVE_CONFIG option. This
patch makes changes in pl08x driver to use device_fc from it instead of platform
data.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
This commit is contained in:
Viresh Kumar 2012-02-01 16:12:20 +05:30 committed by Vinod Koul
parent 258aea76f5
commit 8c9f7aa316
2 changed files with 7 additions and 5 deletions
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4
drivers/dma/amba-pl08x.c
View File

@ -1139,6 +1139,8 @@ static int dma_set_runtime_config(struct dma_chan *chan,
cctl |= burst << PL080_CONTROL_SB_SIZE_SHIFT; cctl |= burst << PL080_CONTROL_SB_SIZE_SHIFT;
cctl |= burst << PL080_CONTROL_DB_SIZE_SHIFT; cctl |= burst << PL080_CONTROL_DB_SIZE_SHIFT;
plchan->device_fc = config->device_fc;
if (plchan->runtime_direction == DMA_DEV_TO_MEM) { if (plchan->runtime_direction == DMA_DEV_TO_MEM) {
plchan->src_addr = config->src_addr; plchan->src_addr = config->src_addr;
plchan->src_cctl = pl08x_cctl(cctl) | PL080_CONTROL_DST_INCR | plchan->src_cctl = pl08x_cctl(cctl) | PL080_CONTROL_DST_INCR |
@ -1370,7 +1372,7 @@ static struct dma_async_tx_descriptor *pl08x_prep_slave_sg(
return NULL; return NULL;
} }
if (plchan->cd->device_fc) if (plchan->device_fc)
tmp = (direction == DMA_MEM_TO_DEV) ? PL080_FLOW_MEM2PER_PER : tmp = (direction == DMA_MEM_TO_DEV) ? PL080_FLOW_MEM2PER_PER :
PL080_FLOW_PER2MEM_PER; PL080_FLOW_PER2MEM_PER;
else else

8
include/linux/amba/pl08x.h
View File

@ -47,9 +47,6 @@ enum {
* @muxval: a number usually used to poke into some mux regiser to * @muxval: a number usually used to poke into some mux regiser to
* mux in the signal to this channel * mux in the signal to this channel
* @cctl_opt: default options for the channel control register * @cctl_opt: default options for the channel control register
* @device_fc: Flow Controller Settings for ccfg register. Only valid for slave
* channels. Fill with 'true' if peripheral should be flow controller. Direction
* will be selected at Runtime.
* @addr: source/target address in physical memory for this DMA channel, * @addr: source/target address in physical memory for this DMA channel,
* can be the address of a FIFO register for burst requests for example. * can be the address of a FIFO register for burst requests for example.
* This can be left undefined if the PrimeCell API is used for configuring * This can be left undefined if the PrimeCell API is used for configuring
@ -68,7 +65,6 @@ struct pl08x_channel_data {
int max_signal; int max_signal;
u32 muxval; u32 muxval;
u32 cctl; u32 cctl;
bool device_fc;
dma_addr_t addr; dma_addr_t addr;
bool circular_buffer; bool circular_buffer;
bool single; bool single;
@ -183,6 +179,9 @@ enum pl08x_dma_chan_state {
* @host: a pointer to the host (internal use) * @host: a pointer to the host (internal use)
* @state: whether the channel is idle, paused, running etc * @state: whether the channel is idle, paused, running etc
* @slave: whether this channel is a device (slave) or for memcpy * @slave: whether this channel is a device (slave) or for memcpy
* @device_fc: Flow Controller Settings for ccfg register. Only valid for slave
* channels. Fill with 'true' if peripheral should be flow controller. Direction
* will be selected at Runtime.
* @waiting: a TX descriptor on this channel which is waiting for a physical * @waiting: a TX descriptor on this channel which is waiting for a physical
* channel to become available * channel to become available
*/ */
@ -205,6 +204,7 @@ struct pl08x_dma_chan {
struct pl08x_driver_data *host; struct pl08x_driver_data *host;
enum pl08x_dma_chan_state state; enum pl08x_dma_chan_state state;
bool slave; bool slave;
bool device_fc;
struct pl08x_txd *waiting; struct pl08x_txd *waiting;
}; };