summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorRabin Vincent <rabin.vincent@stericsson.com>2010-10-12 17:00:52 +0400
committerDan Williams <dan.j.williams@intel.com>2010-10-20 02:17:07 +0400
commit20a5b6d043a9a12d01cec76993ba3658a6d36ba7 (patch)
tree6a2d943828027a758f6c26c97dc10a6975084b02
parent38bdbf020ad7ae1bca564a7db238cdf8b2f462a8 (diff)
downloadlinux-20a5b6d043a9a12d01cec76993ba3658a6d36ba7.tar.xz
ste_dma40: move mode_opt to separate config
Defaults are "basic mode" for physical channels, and "logical source logical destination" for logical channels. Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
-rw-r--r--arch/arm/mach-ux500/devices-db8500.c4
-rw-r--r--arch/arm/plat-nomadik/include/plat/ste_dma40.h18
-rw-r--r--drivers/dma/ste_dma40.c28
-rw-r--r--drivers/dma/ste_dma40_ll.h7
4 files changed, 44 insertions, 13 deletions
diff --git a/arch/arm/mach-ux500/devices-db8500.c b/arch/arm/mach-ux500/devices-db8500.c
index 86b650b0d456..2f84fe607afb 100644
--- a/arch/arm/mach-ux500/devices-db8500.c
+++ b/arch/arm/mach-ux500/devices-db8500.c
@@ -132,7 +132,6 @@ static struct resource dma40_resources[] = {
/* Default configuration for physcial memcpy */
struct stedma40_chan_cfg dma40_memcpy_conf_phy = {
- .channel_type = STEDMA40_PCHAN_BASIC_MODE,
.mode = STEDMA40_MODE_PHYSICAL,
.dir = STEDMA40_MEM_TO_MEM,
@@ -148,8 +147,7 @@ struct stedma40_chan_cfg dma40_memcpy_conf_phy = {
};
/* Default configuration for logical memcpy */
struct stedma40_chan_cfg dma40_memcpy_conf_log = {
- .channel_type = (STEDMA40_LCHAN_SRC_LOG_DST_LOG |
- STEDMA40_NO_TIM_FOR_LINK),
+ .channel_type = STEDMA40_NO_TIM_FOR_LINK,
.dir = STEDMA40_MEM_TO_MEM,
.src_info.endianess = STEDMA40_LITTLE_ENDIAN,
diff --git a/arch/arm/plat-nomadik/include/plat/ste_dma40.h b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
index e49a2a115928..eb7242390ae5 100644
--- a/arch/arm/plat-nomadik/include/plat/ste_dma40.h
+++ b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
@@ -29,14 +29,14 @@ enum stedma40_mode {
STEDMA40_MODE_OPERATION,
};
-/* Mode options */
-#define STEDMA40_INFO_CH_MODE_OPT_POS 8
-#define STEDMA40_PCHAN_BASIC_MODE (0x1 << STEDMA40_INFO_CH_MODE_OPT_POS)
-#define STEDMA40_PCHAN_MODULO_MODE (0x2 << STEDMA40_INFO_CH_MODE_OPT_POS)
-#define STEDMA40_PCHAN_DOUBLE_DST_MODE (0x3 << STEDMA40_INFO_CH_MODE_OPT_POS)
-#define STEDMA40_LCHAN_SRC_PHY_DST_LOG (0x1 << STEDMA40_INFO_CH_MODE_OPT_POS)
-#define STEDMA40_LCHAN_SRC_LOG_DST_PHS (0x2 << STEDMA40_INFO_CH_MODE_OPT_POS)
-#define STEDMA40_LCHAN_SRC_LOG_DST_LOG (0x3 << STEDMA40_INFO_CH_MODE_OPT_POS)
+enum stedma40_mode_opt {
+ STEDMA40_PCHAN_BASIC_MODE = 0,
+ STEDMA40_LCHAN_SRC_LOG_DST_LOG = 0,
+ STEDMA40_PCHAN_MODULO_MODE,
+ STEDMA40_PCHAN_DOUBLE_DST_MODE,
+ STEDMA40_LCHAN_SRC_PHY_DST_LOG,
+ STEDMA40_LCHAN_SRC_LOG_DST_PHY,
+};
/* Interrupt */
#define STEDMA40_INFO_TIM_POS 10
@@ -116,6 +116,7 @@ struct stedma40_half_channel_info {
* @channel_type: priority, mode, mode options and interrupt configuration.
* @high_priority: true if high-priority
* @mode: channel mode: physical, logical, or operation
+ * @mode_opt: options for the chosen channel mode
* @src_dev_type: Src device type
* @dst_dev_type: Dst device type
* @src_info: Parameters for dst half channel
@@ -131,6 +132,7 @@ struct stedma40_chan_cfg {
unsigned int channel_type;
bool high_priority;
enum stedma40_mode mode;
+ enum stedma40_mode_opt mode_opt;
int src_dev_type;
int dst_dev_type;
struct stedma40_half_channel_info src_info;
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index ddaeb51797b1..31f7e97c29b5 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -693,6 +693,31 @@ static u32 d40_chan_has_events(struct d40_chan *d40c)
return val;
}
+static u32 d40_get_prmo(struct d40_chan *d40c)
+{
+ static const unsigned int phy_map[] = {
+ [STEDMA40_PCHAN_BASIC_MODE]
+ = D40_DREG_PRMO_PCHAN_BASIC,
+ [STEDMA40_PCHAN_MODULO_MODE]
+ = D40_DREG_PRMO_PCHAN_MODULO,
+ [STEDMA40_PCHAN_DOUBLE_DST_MODE]
+ = D40_DREG_PRMO_PCHAN_DOUBLE_DST,
+ };
+ static const unsigned int log_map[] = {
+ [STEDMA40_LCHAN_SRC_PHY_DST_LOG]
+ = D40_DREG_PRMO_LCHAN_SRC_PHY_DST_LOG,
+ [STEDMA40_LCHAN_SRC_LOG_DST_PHY]
+ = D40_DREG_PRMO_LCHAN_SRC_LOG_DST_PHY,
+ [STEDMA40_LCHAN_SRC_LOG_DST_LOG]
+ = D40_DREG_PRMO_LCHAN_SRC_LOG_DST_LOG,
+ };
+
+ if (d40c->log_num == D40_PHY_CHAN)
+ return phy_map[d40c->dma_cfg.mode_opt];
+ else
+ return log_map[d40c->dma_cfg.mode_opt];
+}
+
static void d40_config_write(struct d40_chan *d40c)
{
u32 addr_base;
@@ -706,8 +731,7 @@ static void d40_config_write(struct d40_chan *d40c)
writel(var, d40c->base->virtbase + D40_DREG_PRMSE + addr_base);
/* Setup operational mode option register */
- var = ((d40c->dma_cfg.channel_type >> STEDMA40_INFO_CH_MODE_OPT_POS) &
- 0x3) << D40_CHAN_POS(d40c->phy_chan->num);
+ var = d40_get_prmo(d40c) << D40_CHAN_POS(d40c->phy_chan->num);
writel(var, d40c->base->virtbase + D40_DREG_PRMOE + addr_base);
diff --git a/drivers/dma/ste_dma40_ll.h b/drivers/dma/ste_dma40_ll.h
index 37f81e84cd13..9e419b907544 100644
--- a/drivers/dma/ste_dma40_ll.h
+++ b/drivers/dma/ste_dma40_ll.h
@@ -130,6 +130,13 @@
#define D40_DREG_PRMSO 0x014
#define D40_DREG_PRMOE 0x018
#define D40_DREG_PRMOO 0x01C
+#define D40_DREG_PRMO_PCHAN_BASIC 0x1
+#define D40_DREG_PRMO_PCHAN_MODULO 0x2
+#define D40_DREG_PRMO_PCHAN_DOUBLE_DST 0x3
+#define D40_DREG_PRMO_LCHAN_SRC_PHY_DST_LOG 0x1
+#define D40_DREG_PRMO_LCHAN_SRC_LOG_DST_PHY 0x2
+#define D40_DREG_PRMO_LCHAN_SRC_LOG_DST_LOG 0x3
+
#define D40_DREG_LCPA 0x020
#define D40_DREG_LCLA 0x024
#define D40_DREG_ACTIVE 0x050