[alsa-devel] [PATCH 2/3] ASoC: Blackfin: drop unnecessary dma casts
Bryan Wu
cooloney at kernel.org
Fri Feb 6 11:12:35 CET 2009
From: Mike Frysinger <vapier.adi at gmail.com>
Signed-off-by: Mike Frysinger <vapier.adi at gmail.com>
Signed-off-by: Bryan Wu <cooloney at kernel.org>
---
sound/soc/blackfin/bf5xx-sport.c | 104 ++++++++++++++++----------------------
1 files changed, 43 insertions(+), 61 deletions(-)
diff --git a/sound/soc/blackfin/bf5xx-sport.c b/sound/soc/blackfin/bf5xx-sport.c
index 3b99e48..b7953c8 100644
--- a/sound/soc/blackfin/bf5xx-sport.c
+++ b/sound/soc/blackfin/bf5xx-sport.c
@@ -133,7 +133,7 @@ static void setup_desc(struct dmasg *desc, void *buf, int fragcount,
int i;
for (i = 0; i < fragcount; ++i) {
- desc[i].next_desc_addr = (unsigned long)&(desc[i + 1]);
+ desc[i].next_desc_addr = &(desc[i + 1]);
desc[i].start_addr = (unsigned long)buf + i*fragsize;
desc[i].cfg = cfg;
desc[i].x_count = x_count;
@@ -143,12 +143,12 @@ static void setup_desc(struct dmasg *desc, void *buf, int fragcount,
}
/* make circular */
- desc[fragcount-1].next_desc_addr = (unsigned long)desc;
+ desc[fragcount-1].next_desc_addr = desc;
- pr_debug("setup desc: desc0=%p, next0=%lx, desc1=%p,"
- "next1=%lx\nx_count=%x,y_count=%x,addr=0x%lx,cfs=0x%x\n",
- &(desc[0]), desc[0].next_desc_addr,
- &(desc[1]), desc[1].next_desc_addr,
+ pr_debug("setup desc: desc0=%p, next0=%p, desc1=%p,"
+ "next1=%p\nx_count=%x,y_count=%x,addr=0x%lx,cfs=0x%x\n",
+ desc, desc[0].next_desc_addr,
+ desc+1, desc[1].next_desc_addr,
desc[0].x_count, desc[0].y_count,
desc[0].start_addr, desc[0].cfg);
}
@@ -184,22 +184,20 @@ static inline int sport_hook_rx_dummy(struct sport_device *sport)
BUG_ON(sport->curr_rx_desc == sport->dummy_rx_desc);
/* Maybe the dummy buffer descriptor ring is damaged */
- sport->dummy_rx_desc->next_desc_addr = \
- (unsigned long)(sport->dummy_rx_desc+1);
+ sport->dummy_rx_desc->next_desc_addr = sport->dummy_rx_desc + 1;
local_irq_save(flags);
- desc = (struct dmasg *)get_dma_next_desc_ptr(sport->dma_rx_chan);
+ desc = get_dma_next_desc_ptr(sport->dma_rx_chan);
/* Copy the descriptor which will be damaged to backup */
temp_desc = *desc;
desc->x_count = 0xa;
desc->y_count = 0;
- desc->next_desc_addr = (unsigned long)(sport->dummy_rx_desc);
+ desc->next_desc_addr = sport->dummy_rx_desc;
local_irq_restore(flags);
/* Waiting for dummy buffer descriptor is already hooked*/
while ((get_dma_curr_desc_ptr(sport->dma_rx_chan) -
- sizeof(struct dmasg)) !=
- (unsigned long)sport->dummy_rx_desc)
- ;
+ sizeof(struct dmasg)) != sport->dummy_rx_desc)
+ continue;
sport->curr_rx_desc = sport->dummy_rx_desc;
/* Restore the damaged descriptor */
*desc = temp_desc;
@@ -210,14 +208,12 @@ static inline int sport_hook_rx_dummy(struct sport_device *sport)
static inline int sport_rx_dma_start(struct sport_device *sport, int dummy)
{
if (dummy) {
- sport->dummy_rx_desc->next_desc_addr = \
- (unsigned long) sport->dummy_rx_desc;
+ sport->dummy_rx_desc->next_desc_addr = sport->dummy_rx_desc;
sport->curr_rx_desc = sport->dummy_rx_desc;
} else
sport->curr_rx_desc = sport->dma_rx_desc;
- set_dma_next_desc_addr(sport->dma_rx_chan, \
- (unsigned long)(sport->curr_rx_desc));
+ set_dma_next_desc_addr(sport->dma_rx_chan, sport->curr_rx_desc);
set_dma_x_count(sport->dma_rx_chan, 0);
set_dma_x_modify(sport->dma_rx_chan, 0);
set_dma_config(sport->dma_rx_chan, (DMAFLOW_LARGE | NDSIZE_9 | \
@@ -231,14 +227,12 @@ static inline int sport_rx_dma_start(struct sport_device *sport, int dummy)
static inline int sport_tx_dma_start(struct sport_device *sport, int dummy)
{
if (dummy) {
- sport->dummy_tx_desc->next_desc_addr = \
- (unsigned long) sport->dummy_tx_desc;
+ sport->dummy_tx_desc->next_desc_addr = sport->dummy_tx_desc;
sport->curr_tx_desc = sport->dummy_tx_desc;
} else
sport->curr_tx_desc = sport->dma_tx_desc;
- set_dma_next_desc_addr(sport->dma_tx_chan, \
- (unsigned long)(sport->curr_tx_desc));
+ set_dma_next_desc_addr(sport->dma_tx_chan, sport->curr_tx_desc);
set_dma_x_count(sport->dma_tx_chan, 0);
set_dma_x_modify(sport->dma_tx_chan, 0);
set_dma_config(sport->dma_tx_chan,
@@ -261,11 +255,9 @@ int sport_rx_start(struct sport_device *sport)
BUG_ON(sport->curr_rx_desc != sport->dummy_rx_desc);
local_irq_save(flags);
while ((get_dma_curr_desc_ptr(sport->dma_rx_chan) -
- sizeof(struct dmasg)) !=
- (unsigned long)sport->dummy_rx_desc)
- ;
- sport->dummy_rx_desc->next_desc_addr =
- (unsigned long)(sport->dma_rx_desc);
+ sizeof(struct dmasg)) != sport->dummy_rx_desc)
+ continue;
+ sport->dummy_rx_desc->next_desc_addr = sport->dma_rx_desc;
local_irq_restore(flags);
sport->curr_rx_desc = sport->dma_rx_desc;
} else {
@@ -310,23 +302,21 @@ static inline int sport_hook_tx_dummy(struct sport_device *sport)
BUG_ON(sport->dummy_tx_desc == NULL);
BUG_ON(sport->curr_tx_desc == sport->dummy_tx_desc);
- sport->dummy_tx_desc->next_desc_addr = \
- (unsigned long)(sport->dummy_tx_desc+1);
+ sport->dummy_tx_desc->next_desc_addr = sport->dummy_tx_desc + 1;
/* Shorten the time on last normal descriptor */
local_irq_save(flags);
- desc = (struct dmasg *)get_dma_next_desc_ptr(sport->dma_tx_chan);
+ desc = get_dma_next_desc_ptr(sport->dma_tx_chan);
/* Store the descriptor which will be damaged */
temp_desc = *desc;
desc->x_count = 0xa;
desc->y_count = 0;
- desc->next_desc_addr = (unsigned long)(sport->dummy_tx_desc);
+ desc->next_desc_addr = sport->dummy_tx_desc;
local_irq_restore(flags);
/* Waiting for dummy buffer descriptor is already hooked*/
while ((get_dma_curr_desc_ptr(sport->dma_tx_chan) - \
- sizeof(struct dmasg)) != \
- (unsigned long)sport->dummy_tx_desc)
- ;
+ sizeof(struct dmasg)) != sport->dummy_tx_desc)
+ continue;
sport->curr_tx_desc = sport->dummy_tx_desc;
/* Restore the damaged descriptor */
*desc = temp_desc;
@@ -347,11 +337,9 @@ int sport_tx_start(struct sport_device *sport)
/* Hook the normal buffer descriptor */
local_irq_save(flags);
while ((get_dma_curr_desc_ptr(sport->dma_tx_chan) -
- sizeof(struct dmasg)) !=
- (unsigned long)sport->dummy_tx_desc)
- ;
- sport->dummy_tx_desc->next_desc_addr =
- (unsigned long)(sport->dma_tx_desc);
+ sizeof(struct dmasg)) != sport->dummy_tx_desc)
+ continue;
+ sport->dummy_tx_desc->next_desc_addr = sport->dma_tx_desc;
local_irq_restore(flags);
sport->curr_tx_desc = sport->dma_tx_desc;
} else {
@@ -536,19 +524,17 @@ static int sport_config_rx_dummy(struct sport_device *sport)
unsigned config;
pr_debug("%s entered\n", __func__);
-#if L1_DATA_A_LENGTH != 0
- desc = (struct dmasg *) l1_data_sram_alloc(2 * sizeof(*desc));
-#else
- {
+ if (L1_DATA_A_LENGTH)
+ desc = l1_data_sram_zalloc(2 * sizeof(*desc));
+ else {
dma_addr_t addr;
desc = dma_alloc_coherent(NULL, 2 * sizeof(*desc), &addr, 0);
+ memset(desc, 0, 2 * sizeof(*desc));
}
-#endif
if (desc == NULL) {
pr_err("Failed to allocate memory for dummy rx desc\n");
return -ENOMEM;
}
- memset(desc, 0, 2 * sizeof(*desc));
sport->dummy_rx_desc = desc;
desc->start_addr = (unsigned long)sport->dummy_buf;
config = DMAFLOW_LARGE | NDSIZE_9 | compute_wdsize(sport->wdsize)
@@ -559,8 +545,8 @@ static int sport_config_rx_dummy(struct sport_device *sport)
desc->y_count = 0;
desc->y_modify = 0;
memcpy(desc+1, desc, sizeof(*desc));
- desc->next_desc_addr = (unsigned long)(desc+1);
- desc[1].next_desc_addr = (unsigned long)desc;
+ desc->next_desc_addr = desc + 1;
+ desc[1].next_desc_addr = desc;
return 0;
}
@@ -571,19 +557,17 @@ static int sport_config_tx_dummy(struct sport_device *sport)
pr_debug("%s entered\n", __func__);
-#if L1_DATA_A_LENGTH != 0
- desc = (struct dmasg *) l1_data_sram_alloc(2 * sizeof(*desc));
-#else
- {
+ if (L1_DATA_A_LENGTH)
+ desc = l1_data_sram_zalloc(2 * sizeof(*desc));
+ else {
dma_addr_t addr;
desc = dma_alloc_coherent(NULL, 2 * sizeof(*desc), &addr, 0);
+ memset(desc, 0, 2 * sizeof(*desc));
}
-#endif
if (!desc) {
pr_err("Failed to allocate memory for dummy tx desc\n");
return -ENOMEM;
}
- memset(desc, 0, 2 * sizeof(*desc));
sport->dummy_tx_desc = desc;
desc->start_addr = (unsigned long)sport->dummy_buf + \
sport->dummy_count;
@@ -595,8 +579,8 @@ static int sport_config_tx_dummy(struct sport_device *sport)
desc->y_count = 0;
desc->y_modify = 0;
memcpy(desc+1, desc, sizeof(*desc));
- desc->next_desc_addr = (unsigned long)(desc+1);
- desc[1].next_desc_addr = (unsigned long)desc;
+ desc->next_desc_addr = desc + 1;
+ desc[1].next_desc_addr = desc;
return 0;
}
@@ -872,17 +856,15 @@ struct sport_device *sport_init(struct sport_param *param, unsigned wdsize,
sport->wdsize = wdsize;
sport->dummy_count = dummy_count;
-#if L1_DATA_A_LENGTH != 0
- sport->dummy_buf = l1_data_sram_alloc(dummy_count * 2);
-#else
- sport->dummy_buf = kmalloc(dummy_count * 2, GFP_KERNEL);
-#endif
+ if (L1_DATA_A_LENGTH)
+ sport->dummy_buf = l1_data_sram_zalloc(dummy_count * 2);
+ else
+ sport->dummy_buf = kzalloc(dummy_count * 2, GFP_KERNEL);
if (sport->dummy_buf == NULL) {
pr_err("Failed to allocate dummy buffer\n");
goto __error;
}
- memset(sport->dummy_buf, 0, dummy_count * 2);
ret = sport_config_rx_dummy(sport);
if (ret) {
pr_err("Failed to config rx dummy ring\n");
@@ -939,6 +921,7 @@ void sport_done(struct sport_device *sport)
sport = NULL;
}
EXPORT_SYMBOL(sport_done);
+
/*
* It is only used to send several bytes when dma is not enabled
* sport controller is configured but not enabled.
@@ -1029,4 +1012,3 @@ EXPORT_SYMBOL(sport_send_and_recv);
MODULE_AUTHOR("Roy Huang");
MODULE_DESCRIPTION("SPORT driver for ADI Blackfin");
MODULE_LICENSE("GPL");
-
--
1.5.6.3
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