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-rw-r--r--arch/arm/plat-omap/dma.c149
-rw-r--r--include/linux/omap-dma.h12
2 files changed, 1 insertions, 160 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index 08c99413d02c..8f441f125ce1 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -65,8 +65,6 @@ enum { DMA_CHAIN_STARTED, DMA_CHAIN_NOTSTARTED };
static struct omap_system_dma_plat_info *p;
static struct omap_dma_dev_attr *d;
static void omap_clear_dma(int lch);
-static int omap_dma_set_prio_lch(int lch, unsigned char read_prio,
- unsigned char write_prio);
static int enable_1510_mode;
static u32 errata;
@@ -95,20 +93,6 @@ static struct dma_link_info *dma_linked_lch;
#ifndef CONFIG_ARCH_OMAP1
/* Chain handling macros */
-#define OMAP_DMA_CHAIN_QINIT(chain_id) \
- do { \
- dma_linked_lch[chain_id].q_head = \
- dma_linked_lch[chain_id].q_tail = \
- dma_linked_lch[chain_id].q_count = 0; \
- } while (0)
-#define OMAP_DMA_CHAIN_QFULL(chain_id) \
- (dma_linked_lch[chain_id].no_of_lchs_linked == \
- dma_linked_lch[chain_id].q_count)
-#define OMAP_DMA_CHAIN_QLAST(chain_id) \
- do { \
- ((dma_linked_lch[chain_id].no_of_lchs_linked-1) == \
- dma_linked_lch[chain_id].q_count) \
- } while (0)
#define OMAP_DMA_CHAIN_QEMPTY(chain_id) \
(0 == dma_linked_lch[chain_id].q_count)
#define __OMAP_DMA_CHAIN_INCQ(end) \
@@ -118,12 +102,6 @@ static struct dma_link_info *dma_linked_lch;
__OMAP_DMA_CHAIN_INCQ(dma_linked_lch[chain_id].q_head); \
dma_linked_lch[chain_id].q_count--; \
} while (0)
-
-#define OMAP_DMA_CHAIN_INCQTAIL(chain_id) \
- do { \
- __OMAP_DMA_CHAIN_INCQ(dma_linked_lch[chain_id].q_tail); \
- dma_linked_lch[chain_id].q_count++; \
- } while (0)
#endif
static int dma_lch_count;
@@ -137,9 +115,6 @@ static inline void disable_lnk(int lch);
static void omap_disable_channel_irq(int lch);
static inline void omap_enable_channel_irq(int lch);
-#define REVISIT_24XX() printk(KERN_ERR "FIXME: no %s on 24xx\n", \
- __func__);
-
#ifdef CONFIG_ARCH_OMAP15XX
/* Returns 1 if the DMA module is in OMAP1510-compatible mode, 0 otherwise */
static int omap_dma_in_1510_mode(void)
@@ -278,19 +253,6 @@ void omap_set_dma_transfer_params(int lch, int data_type, int elem_count,
}
EXPORT_SYMBOL(omap_set_dma_transfer_params);
-void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode)
-{
- if (dma_omap2plus()) {
- u32 csdp;
-
- csdp = p->dma_read(CSDP, lch);
- csdp &= ~(0x3 << 16);
- csdp |= (mode << 16);
- p->dma_write(csdp, CSDP, lch);
- }
-}
-EXPORT_SYMBOL(omap_set_dma_write_mode);
-
void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode)
{
if (dma_omap1() && !dma_omap15xx()) {
@@ -332,25 +294,6 @@ void omap_set_dma_src_params(int lch, int src_port, int src_amode,
}
EXPORT_SYMBOL(omap_set_dma_src_params);
-void omap_set_dma_params(int lch, struct omap_dma_channel_params *params)
-{
- omap_set_dma_transfer_params(lch, params->data_type,
- params->elem_count, params->frame_count,
- params->sync_mode, params->trigger,
- params->src_or_dst_synch);
- omap_set_dma_src_params(lch, params->src_port,
- params->src_amode, params->src_start,
- params->src_ei, params->src_fi);
-
- omap_set_dma_dest_params(lch, params->dst_port,
- params->dst_amode, params->dst_start,
- params->dst_ei, params->dst_fi);
- if (params->read_prio || params->write_prio)
- omap_dma_set_prio_lch(lch, params->read_prio,
- params->write_prio);
-}
-EXPORT_SYMBOL(omap_set_dma_params);
-
void omap_set_dma_src_data_pack(int lch, int enable)
{
u32 l;
@@ -507,12 +450,6 @@ static inline void omap_disable_channel_irq(int lch)
p->dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR, lch);
}
-void omap_enable_dma_irq(int lch, u16 bits)
-{
- dma_chan[lch].enabled_irqs |= bits;
-}
-EXPORT_SYMBOL(omap_enable_dma_irq);
-
void omap_disable_dma_irq(int lch, u16 bits)
{
dma_chan[lch].enabled_irqs &= ~bits;
@@ -721,7 +658,7 @@ EXPORT_SYMBOL(omap_free_dma);
* DMA_THREAD_RESERVE_TWOT
* DMA_THREAD_RESERVE_THREET
*/
-void
+static void
omap_dma_set_global_params(int arb_rate, int max_fifo_depth, int tparams)
{
u32 reg;
@@ -742,39 +679,6 @@ omap_dma_set_global_params(int arb_rate, int max_fifo_depth, int tparams)
p->dma_write(reg, GCR, 0);
}
-EXPORT_SYMBOL(omap_dma_set_global_params);
-
-/**
- * @brief omap_dma_set_prio_lch : Set channel wise priority settings
- *
- * @param lch
- * @param read_prio - Read priority
- * @param write_prio - Write priority
- * Both of the above can be set with one of the following values :
- * DMA_CH_PRIO_HIGH/DMA_CH_PRIO_LOW
- */
-static int
-omap_dma_set_prio_lch(int lch, unsigned char read_prio,
- unsigned char write_prio)
-{
- u32 l;
-
- if (unlikely((lch < 0 || lch >= dma_lch_count))) {
- printk(KERN_ERR "Invalid channel id\n");
- return -EINVAL;
- }
- l = p->dma_read(CCR, lch);
- l &= ~((1 << 6) | (1 << 26));
- if (d->dev_caps & IS_RW_PRIORITY)
- l |= ((read_prio & 0x1) << 6) | ((write_prio & 0x1) << 26);
- else
- l |= ((read_prio & 0x1) << 6);
-
- p->dma_write(l, CCR, lch);
-
- return 0;
-}
-
/*
* Clears any DMA state so the DMA engine is ready to restart with new buffers
@@ -926,29 +830,6 @@ EXPORT_SYMBOL(omap_stop_dma);
* Allows changing the DMA callback function or data. This may be needed if
* the driver shares a single DMA channel for multiple dma triggers.
*/
-int omap_set_dma_callback(int lch,
- void (*callback)(int lch, u16 ch_status, void *data),
- void *data)
-{
- unsigned long flags;
-
- if (lch < 0)
- return -ENODEV;
-
- spin_lock_irqsave(&dma_chan_lock, flags);
- if (dma_chan[lch].dev_id == -1) {
- printk(KERN_ERR "DMA callback for not set for free channel\n");
- spin_unlock_irqrestore(&dma_chan_lock, flags);
- return -EINVAL;
- }
- dma_chan[lch].callback = callback;
- dma_chan[lch].data = data;
- spin_unlock_irqrestore(&dma_chan_lock, flags);
-
- return 0;
-}
-EXPORT_SYMBOL(omap_set_dma_callback);
-
/*
* Returns current physical source address for the given DMA channel.
* If the channel is running the caller must disable interrupts prior calling
@@ -1048,34 +929,6 @@ int omap_dma_running(void)
return 0;
}
-/*
- * lch_queue DMA will start right after lch_head one is finished.
- * For this DMA link to start, you still need to start (see omap_start_dma)
- * the first one. That will fire up the entire queue.
- */
-void omap_dma_link_lch(int lch_head, int lch_queue)
-{
- if (omap_dma_in_1510_mode()) {
- if (lch_head == lch_queue) {
- p->dma_write(p->dma_read(CCR, lch_head) | (3 << 8),
- CCR, lch_head);
- return;
- }
- printk(KERN_ERR "DMA linking is not supported in 1510 mode\n");
- BUG();
- return;
- }
-
- if ((dma_chan[lch_head].dev_id == -1) ||
- (dma_chan[lch_queue].dev_id == -1)) {
- pr_err("omap_dma: trying to link non requested channels\n");
- dump_stack();
- }
-
- dma_chan[lch_head].next_lch = lch_queue;
-}
-EXPORT_SYMBOL(omap_dma_link_lch);
-
/*----------------------------------------------------------------------------*/
#ifdef CONFIG_ARCH_OMAP1
diff --git a/include/linux/omap-dma.h b/include/linux/omap-dma.h
index ba3cfbb52312..61e474ce3ccb 100644
--- a/include/linux/omap-dma.h
+++ b/include/linux/omap-dma.h
@@ -303,7 +303,6 @@ extern void omap_set_dma_priority(int lch, int dst_port, int priority);
extern int omap_request_dma(int dev_id, const char *dev_name,
void (*callback)(int lch, u16 ch_status, void *data),
void *data, int *dma_ch);
-extern void omap_enable_dma_irq(int ch, u16 irq_bits);
extern void omap_disable_dma_irq(int ch, u16 irq_bits);
extern void omap_free_dma(int ch);
extern void omap_start_dma(int lch);
@@ -312,7 +311,6 @@ extern void omap_set_dma_transfer_params(int lch, int data_type,
int elem_count, int frame_count,
int sync_mode,
int dma_trigger, int src_or_dst_synch);
-extern void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode);
extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode);
extern void omap_set_dma_src_params(int lch, int src_port, int src_amode,
@@ -329,20 +327,10 @@ extern void omap_set_dma_dest_data_pack(int lch, int enable);
extern void omap_set_dma_dest_burst_mode(int lch,
enum omap_dma_burst_mode burst_mode);
-extern void omap_set_dma_params(int lch,
- struct omap_dma_channel_params *params);
-
-extern void omap_dma_link_lch(int lch_head, int lch_queue);
-
-extern int omap_set_dma_callback(int lch,
- void (*callback)(int lch, u16 ch_status, void *data),
- void *data);
extern dma_addr_t omap_get_dma_src_pos(int lch);
extern dma_addr_t omap_get_dma_dst_pos(int lch);
extern int omap_get_dma_active_status(int lch);
extern int omap_dma_running(void);
-extern void omap_dma_set_global_params(int arb_rate, int max_fifo_depth,
- int tparams);
void omap_dma_global_context_save(void);
void omap_dma_global_context_restore(void);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-25 07:38:12 +0300