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-rw-r--r--drivers/dma/fsldma.c128
-rw-r--r--drivers/dma/fsldma.h26
2 files changed, 81 insertions, 73 deletions
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 0b4e6383f48..6795d96e362 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -37,7 +37,7 @@
#include <asm/fsldma.h>
#include "fsldma.h"
-static void dma_init(struct fsl_dma_chan *fsl_chan)
+static void dma_init(struct fsldma_chan *fsl_chan)
{
/* Reset the channel */
DMA_OUT(fsl_chan, &fsl_chan->reg_base->mr, 0, 32);
@@ -64,23 +64,23 @@ static void dma_init(struct fsl_dma_chan *fsl_chan)
}
-static void set_sr(struct fsl_dma_chan *fsl_chan, u32 val)
+static void set_sr(struct fsldma_chan *fsl_chan, u32 val)
{
DMA_OUT(fsl_chan, &fsl_chan->reg_base->sr, val, 32);
}
-static u32 get_sr(struct fsl_dma_chan *fsl_chan)
+static u32 get_sr(struct fsldma_chan *fsl_chan)
{
return DMA_IN(fsl_chan, &fsl_chan->reg_base->sr, 32);
}
-static void set_desc_cnt(struct fsl_dma_chan *fsl_chan,
+static void set_desc_cnt(struct fsldma_chan *fsl_chan,
struct fsl_dma_ld_hw *hw, u32 count)
{
hw->count = CPU_TO_DMA(fsl_chan, count, 32);
}
-static void set_desc_src(struct fsl_dma_chan *fsl_chan,
+static void set_desc_src(struct fsldma_chan *fsl_chan,
struct fsl_dma_ld_hw *hw, dma_addr_t src)
{
u64 snoop_bits;
@@ -90,7 +90,7 @@ static void set_desc_src(struct fsl_dma_chan *fsl_chan,
hw->src_addr = CPU_TO_DMA(fsl_chan, snoop_bits | src, 64);
}
-static void set_desc_dest(struct fsl_dma_chan *fsl_chan,
+static void set_desc_dest(struct fsldma_chan *fsl_chan,
struct fsl_dma_ld_hw *hw, dma_addr_t dest)
{
u64 snoop_bits;
@@ -100,7 +100,7 @@ static void set_desc_dest(struct fsl_dma_chan *fsl_chan,
hw->dst_addr = CPU_TO_DMA(fsl_chan, snoop_bits | dest, 64);
}
-static void set_desc_next(struct fsl_dma_chan *fsl_chan,
+static void set_desc_next(struct fsldma_chan *fsl_chan,
struct fsl_dma_ld_hw *hw, dma_addr_t next)
{
u64 snoop_bits;
@@ -110,38 +110,38 @@ static void set_desc_next(struct fsl_dma_chan *fsl_chan,
hw->next_ln_addr = CPU_TO_DMA(fsl_chan, snoop_bits | next, 64);
}
-static void set_cdar(struct fsl_dma_chan *fsl_chan, dma_addr_t addr)
+static void set_cdar(struct fsldma_chan *fsl_chan, dma_addr_t addr)
{
DMA_OUT(fsl_chan, &fsl_chan->reg_base->cdar, addr | FSL_DMA_SNEN, 64);
}
-static dma_addr_t get_cdar(struct fsl_dma_chan *fsl_chan)
+static dma_addr_t get_cdar(struct fsldma_chan *fsl_chan)
{
return DMA_IN(fsl_chan, &fsl_chan->reg_base->cdar, 64) & ~FSL_DMA_SNEN;
}
-static void set_ndar(struct fsl_dma_chan *fsl_chan, dma_addr_t addr)
+static void set_ndar(struct fsldma_chan *fsl_chan, dma_addr_t addr)
{
DMA_OUT(fsl_chan, &fsl_chan->reg_base->ndar, addr, 64);
}
-static dma_addr_t get_ndar(struct fsl_dma_chan *fsl_chan)
+static dma_addr_t get_ndar(struct fsldma_chan *fsl_chan)
{
return DMA_IN(fsl_chan, &fsl_chan->reg_base->ndar, 64);
}
-static u32 get_bcr(struct fsl_dma_chan *fsl_chan)
+static u32 get_bcr(struct fsldma_chan *fsl_chan)
{
return DMA_IN(fsl_chan, &fsl_chan->reg_base->bcr, 32);
}
-static int dma_is_idle(struct fsl_dma_chan *fsl_chan)
+static int dma_is_idle(struct fsldma_chan *fsl_chan)
{
u32 sr = get_sr(fsl_chan);
return (!(sr & FSL_DMA_SR_CB)) || (sr & FSL_DMA_SR_CH);
}
-static void dma_start(struct fsl_dma_chan *fsl_chan)
+static void dma_start(struct fsldma_chan *fsl_chan)
{
u32 mode;
@@ -164,7 +164,7 @@ static void dma_start(struct fsl_dma_chan *fsl_chan)
DMA_OUT(fsl_chan, &fsl_chan->reg_base->mr, mode, 32);
}
-static void dma_halt(struct fsl_dma_chan *fsl_chan)
+static void dma_halt(struct fsldma_chan *fsl_chan)
{
u32 mode;
int i;
@@ -186,7 +186,7 @@ static void dma_halt(struct fsl_dma_chan *fsl_chan)
dev_err(fsl_chan->dev, "DMA halt timeout!\n");
}
-static void set_ld_eol(struct fsl_dma_chan *fsl_chan,
+static void set_ld_eol(struct fsldma_chan *fsl_chan,
struct fsl_desc_sw *desc)
{
u64 snoop_bits;
@@ -199,7 +199,7 @@ static void set_ld_eol(struct fsl_dma_chan *fsl_chan,
| snoop_bits, 64);
}
-static void append_ld_queue(struct fsl_dma_chan *fsl_chan,
+static void append_ld_queue(struct fsldma_chan *fsl_chan,
struct fsl_desc_sw *new_desc)
{
struct fsl_desc_sw *queue_tail = to_fsl_desc(fsl_chan->ld_queue.prev);
@@ -231,7 +231,7 @@ static void append_ld_queue(struct fsl_dma_chan *fsl_chan,
* read data from SA, SA + 1, SA + 2, SA + 3, then loop back to SA,
* SA + 1 ... and so on.
*/
-static void fsl_chan_set_src_loop_size(struct fsl_dma_chan *fsl_chan, int size)
+static void fsl_chan_set_src_loop_size(struct fsldma_chan *fsl_chan, int size)
{
u32 mode;
@@ -263,7 +263,7 @@ static void fsl_chan_set_src_loop_size(struct fsl_dma_chan *fsl_chan, int size)
* write data to TA, TA + 1, TA + 2, TA + 3, then loop back to TA,
* TA + 1 ... and so on.
*/
-static void fsl_chan_set_dest_loop_size(struct fsl_dma_chan *fsl_chan, int size)
+static void fsl_chan_set_dest_loop_size(struct fsldma_chan *fsl_chan, int size)
{
u32 mode;
@@ -296,7 +296,7 @@ static void fsl_chan_set_dest_loop_size(struct fsl_dma_chan *fsl_chan, int size)
*
* A size of 0 disables external pause control. The maximum size is 1024.
*/
-static void fsl_chan_set_request_count(struct fsl_dma_chan *fsl_chan, int size)
+static void fsl_chan_set_request_count(struct fsldma_chan *fsl_chan, int size)
{
u32 mode;
@@ -317,7 +317,7 @@ static void fsl_chan_set_request_count(struct fsl_dma_chan *fsl_chan, int size)
* The DMA Request Count feature should be used in addition to this feature
* to set the number of bytes to transfer before pausing the channel.
*/
-static void fsl_chan_toggle_ext_pause(struct fsl_dma_chan *fsl_chan, int enable)
+static void fsl_chan_toggle_ext_pause(struct fsldma_chan *fsl_chan, int enable)
{
if (enable)
fsl_chan->feature |= FSL_DMA_CHAN_PAUSE_EXT;
@@ -335,7 +335,7 @@ static void fsl_chan_toggle_ext_pause(struct fsl_dma_chan *fsl_chan, int enable)
* transfer immediately. The DMA channel will wait for the
* control pin asserted.
*/
-static void fsl_chan_toggle_ext_start(struct fsl_dma_chan *fsl_chan, int enable)
+static void fsl_chan_toggle_ext_start(struct fsldma_chan *fsl_chan, int enable)
{
if (enable)
fsl_chan->feature |= FSL_DMA_CHAN_START_EXT;
@@ -345,7 +345,7 @@ static void fsl_chan_toggle_ext_start(struct fsl_dma_chan *fsl_chan, int enable)
static dma_cookie_t fsl_dma_tx_submit(struct dma_async_tx_descriptor *tx)
{
- struct fsl_dma_chan *fsl_chan = to_fsl_chan(tx->chan);
+ struct fsldma_chan *fsl_chan = to_fsl_chan(tx->chan);
struct fsl_desc_sw *desc = tx_to_fsl_desc(tx);
struct fsl_desc_sw *child;
unsigned long flags;
@@ -379,7 +379,7 @@ static dma_cookie_t fsl_dma_tx_submit(struct dma_async_tx_descriptor *tx)
* Return - The descriptor allocated. NULL for failed.
*/
static struct fsl_desc_sw *fsl_dma_alloc_descriptor(
- struct fsl_dma_chan *fsl_chan)
+ struct fsldma_chan *fsl_chan)
{
dma_addr_t pdesc;
struct fsl_desc_sw *desc_sw;
@@ -408,7 +408,7 @@ static struct fsl_desc_sw *fsl_dma_alloc_descriptor(
*/
static int fsl_dma_alloc_chan_resources(struct dma_chan *chan)
{
- struct fsl_dma_chan *fsl_chan = to_fsl_chan(chan);
+ struct fsldma_chan *fsl_chan = to_fsl_chan(chan);
/* Has this channel already been allocated? */
if (fsl_chan->desc_pool)
@@ -435,7 +435,7 @@ static int fsl_dma_alloc_chan_resources(struct dma_chan *chan)
*/
static void fsl_dma_free_chan_resources(struct dma_chan *chan)
{
- struct fsl_dma_chan *fsl_chan = to_fsl_chan(chan);
+ struct fsldma_chan *fsl_chan = to_fsl_chan(chan);
struct fsl_desc_sw *desc, *_desc;
unsigned long flags;
@@ -459,7 +459,7 @@ static void fsl_dma_free_chan_resources(struct dma_chan *chan)
static struct dma_async_tx_descriptor *
fsl_dma_prep_interrupt(struct dma_chan *chan, unsigned long flags)
{
- struct fsl_dma_chan *fsl_chan;
+ struct fsldma_chan *fsl_chan;
struct fsl_desc_sw *new;
if (!chan)
@@ -489,7 +489,7 @@ static struct dma_async_tx_descriptor *fsl_dma_prep_memcpy(
struct dma_chan *chan, dma_addr_t dma_dest, dma_addr_t dma_src,
size_t len, unsigned long flags)
{
- struct fsl_dma_chan *fsl_chan;
+ struct fsldma_chan *fsl_chan;
struct fsl_desc_sw *first = NULL, *prev = NULL, *new;
struct list_head *list;
size_t copy;
@@ -575,7 +575,7 @@ static struct dma_async_tx_descriptor *fsl_dma_prep_slave_sg(
struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len,
enum dma_data_direction direction, unsigned long flags)
{
- struct fsl_dma_chan *fsl_chan;
+ struct fsldma_chan *fsl_chan;
struct fsl_desc_sw *first = NULL, *prev = NULL, *new = NULL;
struct fsl_dma_slave *slave;
struct list_head *tx_list;
@@ -759,7 +759,7 @@ fail:
static void fsl_dma_device_terminate_all(struct dma_chan *chan)
{
- struct fsl_dma_chan *fsl_chan;
+ struct fsldma_chan *fsl_chan;
struct fsl_desc_sw *desc, *tmp;
unsigned long flags;
@@ -786,7 +786,7 @@ static void fsl_dma_device_terminate_all(struct dma_chan *chan)
* fsl_dma_update_completed_cookie - Update the completed cookie.
* @fsl_chan : Freescale DMA channel
*/
-static void fsl_dma_update_completed_cookie(struct fsl_dma_chan *fsl_chan)
+static void fsl_dma_update_completed_cookie(struct fsldma_chan *fsl_chan)
{
struct fsl_desc_sw *cur_desc, *desc;
dma_addr_t ld_phy;
@@ -820,7 +820,7 @@ static void fsl_dma_update_completed_cookie(struct fsl_dma_chan *fsl_chan)
* If 'in_intr' is set, the function will move the link descriptor to
* the recycle list. Otherwise, free it directly.
*/
-static void fsl_chan_ld_cleanup(struct fsl_dma_chan *fsl_chan)
+static void fsl_chan_ld_cleanup(struct fsldma_chan *fsl_chan)
{
struct fsl_desc_sw *desc, *_desc;
unsigned long flags;
@@ -864,7 +864,7 @@ static void fsl_chan_ld_cleanup(struct fsl_dma_chan *fsl_chan)
* fsl_chan_xfer_ld_queue - Transfer link descriptors in channel ld_queue.
* @fsl_chan : Freescale DMA channel
*/
-static void fsl_chan_xfer_ld_queue(struct fsl_dma_chan *fsl_chan)
+static void fsl_chan_xfer_ld_queue(struct fsldma_chan *fsl_chan)
{
struct list_head *ld_node;
dma_addr_t next_dest_addr;
@@ -912,7 +912,7 @@ out_unlock:
*/
static void fsl_dma_memcpy_issue_pending(struct dma_chan *chan)
{
- struct fsl_dma_chan *fsl_chan = to_fsl_chan(chan);
+ struct fsldma_chan *fsl_chan = to_fsl_chan(chan);
#ifdef FSL_DMA_LD_DEBUG
struct fsl_desc_sw *ld;
@@ -949,7 +949,7 @@ static enum dma_status fsl_dma_is_complete(struct dma_chan *chan,
dma_cookie_t *done,
dma_cookie_t *used)
{
- struct fsl_dma_chan *fsl_chan = to_fsl_chan(chan);
+ struct fsldma_chan *fsl_chan = to_fsl_chan(chan);
dma_cookie_t last_used;
dma_cookie_t last_complete;
@@ -969,7 +969,7 @@ static enum dma_status fsl_dma_is_complete(struct dma_chan *chan,
static irqreturn_t fsl_dma_chan_do_interrupt(int irq, void *data)
{
- struct fsl_dma_chan *fsl_chan = (struct fsl_dma_chan *)data;
+ struct fsldma_chan *fsl_chan = data;
u32 stat;
int update_cookie = 0;
int xfer_ld_q = 0;
@@ -1050,9 +1050,9 @@ static irqreturn_t fsl_dma_chan_do_interrupt(int irq, void *data)
static irqreturn_t fsl_dma_do_interrupt(int irq, void *data)
{
- struct fsl_dma_device *fdev = (struct fsl_dma_device *)data;
- u32 gsr;
+ struct fsldma_device *fdev = data;
int ch_nr;
+ u32 gsr;
gsr = (fdev->feature & FSL_DMA_BIG_ENDIAN) ? in_be32(fdev->reg_base)
: in_le32(fdev->reg_base);
@@ -1064,19 +1064,23 @@ static irqreturn_t fsl_dma_do_interrupt(int irq, void *data)
static void dma_do_tasklet(unsigned long data)
{
- struct fsl_dma_chan *fsl_chan = (struct fsl_dma_chan *)data;
+ struct fsldma_chan *fsl_chan = (struct fsldma_chan *)data;
fsl_chan_ld_cleanup(fsl_chan);
}
-static int __devinit fsl_dma_chan_probe(struct fsl_dma_device *fdev,
+/*----------------------------------------------------------------------------*/
+/* OpenFirmware Subsystem */
+/*----------------------------------------------------------------------------*/
+
+static int __devinit fsl_dma_chan_probe(struct fsldma_device *fdev,
struct device_node *node, u32 feature, const char *compatible)
{
- struct fsl_dma_chan *new_fsl_chan;
+ struct fsldma_chan *new_fsl_chan;
struct resource res;
int err;
/* alloc channel */
- new_fsl_chan = kzalloc(sizeof(struct fsl_dma_chan), GFP_KERNEL);
+ new_fsl_chan = kzalloc(sizeof(*new_fsl_chan), GFP_KERNEL);
if (!new_fsl_chan) {
dev_err(fdev->dev, "No free memory for allocating "
"dma channels!\n");
@@ -1167,7 +1171,7 @@ err_no_reg:
return err;
}
-static void fsl_dma_chan_remove(struct fsl_dma_chan *fchan)
+static void fsl_dma_chan_remove(struct fsldma_chan *fchan)
{
if (fchan->irq != NO_IRQ)
free_irq(fchan->irq, fchan);
@@ -1176,15 +1180,15 @@ static void fsl_dma_chan_remove(struct fsl_dma_chan *fchan)
kfree(fchan);
}
-static int __devinit of_fsl_dma_probe(struct of_device *dev,
+static int __devinit fsldma_of_probe(struct of_device *dev,
const struct of_device_id *match)
{
int err;
- struct fsl_dma_device *fdev;
+ struct fsldma_device *fdev;
struct device_node *child;
struct resource res;
- fdev = kzalloc(sizeof(struct fsl_dma_device), GFP_KERNEL);
+ fdev = kzalloc(sizeof(*fdev), GFP_KERNEL);
if (!fdev) {
dev_err(&dev->dev, "No enough memory for 'priv'\n");
return -ENOMEM;
@@ -1256,9 +1260,9 @@ err_no_reg:
return err;
}
-static int of_fsl_dma_remove(struct of_device *of_dev)
+static int fsldma_of_remove(struct of_device *of_dev)
{
- struct fsl_dma_device *fdev;
+ struct fsldma_device *fdev;
unsigned int i;
fdev = dev_get_drvdata(&of_dev->dev);
@@ -1280,39 +1284,43 @@ static int of_fsl_dma_remove(struct of_device *of_dev)
return 0;
}
-static struct of_device_id of_fsl_dma_ids[] = {
+static struct of_device_id fsldma_of_ids[] = {
{ .compatible = "fsl,eloplus-dma", },
{ .compatible = "fsl,elo-dma", },
{}
};
-static struct of_platform_driver of_fsl_dma_driver = {
- .name = "fsl-elo-dma",
- .match_table = of_fsl_dma_ids,
- .probe = of_fsl_dma_probe,
- .remove = of_fsl_dma_remove,
+static struct of_platform_driver fsldma_of_driver = {
+ .name = "fsl-elo-dma",
+ .match_table = fsldma_of_ids,
+ .probe = fsldma_of_probe,
+ .remove = fsldma_of_remove,
};
-static __init int of_fsl_dma_init(void)
+/*----------------------------------------------------------------------------*/
+/* Module Init / Exit */
+/*----------------------------------------------------------------------------*/
+
+static __init int fsldma_init(void)
{
int ret;
pr_info("Freescale Elo / Elo Plus DMA driver\n");
- ret = of_register_platform_driver(&of_fsl_dma_driver);
+ ret = of_register_platform_driver(&fsldma_of_driver);
if (ret)
pr_err("fsldma: failed to register platform driver\n");
return ret;
}
-static void __exit of_fsl_dma_exit(void)
+static void __exit fsldma_exit(void)
{
- of_unregister_platform_driver(&of_fsl_dma_driver);
+ of_unregister_platform_driver(&fsldma_of_driver);
}
-subsys_initcall(of_fsl_dma_init);
-module_exit(of_fsl_dma_exit);
+subsys_initcall(fsldma_init);
+module_exit(fsldma_exit);
MODULE_DESCRIPTION("Freescale Elo / Elo Plus DMA driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/dma/fsldma.h b/drivers/dma/fsldma.h
index dbb5b5cce4c..f8c2baa6f41 100644
--- a/drivers/dma/fsldma.h
+++ b/drivers/dma/fsldma.h
@@ -94,7 +94,7 @@ struct fsl_desc_sw {
struct dma_async_tx_descriptor async_tx;
} __attribute__((aligned(32)));
-struct fsl_dma_chan_regs {
+struct fsldma_chan_regs {
u32 mr; /* 0x00 - Mode Register */
u32 sr; /* 0x04 - Status Register */
u64 cdar; /* 0x08 - Current descriptor address register */
@@ -104,19 +104,19 @@ struct fsl_dma_chan_regs {
u64 ndar; /* 0x24 - Next Descriptor Address Register */
};
-struct fsl_dma_chan;
+struct fsldma_chan;
#define FSL_DMA_MAX_CHANS_PER_DEVICE 4
-struct fsl_dma_device {
+struct fsldma_device {
void __iomem *reg_base; /* DGSR register base */
struct device *dev;
struct dma_device common;
- struct fsl_dma_chan *chan[FSL_DMA_MAX_CHANS_PER_DEVICE];
+ struct fsldma_chan *chan[FSL_DMA_MAX_CHANS_PER_DEVICE];
u32 feature; /* The same as DMA channels */
int irq; /* Channel IRQ */
};
-/* Define macros for fsl_dma_chan->feature property */
+/* Define macros for fsldma_chan->feature property */
#define FSL_DMA_LITTLE_ENDIAN 0x00000000
#define FSL_DMA_BIG_ENDIAN 0x00000001
@@ -127,8 +127,8 @@ struct fsl_dma_device {
#define FSL_DMA_CHAN_PAUSE_EXT 0x00001000
#define FSL_DMA_CHAN_START_EXT 0x00002000
-struct fsl_dma_chan {
- struct fsl_dma_chan_regs __iomem *reg_base;
+struct fsldma_chan {
+ struct fsldma_chan_regs __iomem *reg_base;
dma_cookie_t completed_cookie; /* The maximum cookie completed */
spinlock_t desc_lock; /* Descriptor operation lock */
struct list_head ld_queue; /* Link descriptors queue */
@@ -140,14 +140,14 @@ struct fsl_dma_chan {
struct tasklet_struct tasklet;
u32 feature;
- void (*toggle_ext_pause)(struct fsl_dma_chan *fsl_chan, int enable);
- void (*toggle_ext_start)(struct fsl_dma_chan *fsl_chan, int enable);
- void (*set_src_loop_size)(struct fsl_dma_chan *fsl_chan, int size);
- void (*set_dest_loop_size)(struct fsl_dma_chan *fsl_chan, int size);
- void (*set_request_count)(struct fsl_dma_chan *fsl_chan, int size);
+ void (*toggle_ext_pause)(struct fsldma_chan *fsl_chan, int enable);
+ void (*toggle_ext_start)(struct fsldma_chan *fsl_chan, int enable);
+ void (*set_src_loop_size)(struct fsldma_chan *fsl_chan, int size);
+ void (*set_dest_loop_size)(struct fsldma_chan *fsl_chan, int size);
+ void (*set_request_count)(struct fsldma_chan *fsl_chan, int size);
};
-#define to_fsl_chan(chan) container_of(chan, struct fsl_dma_chan, common)
+#define to_fsl_chan(chan) container_of(chan, struct fsldma_chan, common)
#define to_fsl_desc(lh) container_of(lh, struct fsl_desc_sw, node)
#define tx_to_fsl_desc(tx) container_of(tx, struct fsl_desc_sw, async_tx)
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-29 11:55:50 +0000