Introduce a helper function to handle the common code that writes a 32-bit
value to the 16-bit add-on register.
Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
.../comedi/drivers/addi-data/hwdrv_apci3120.c | 71 +++++++++-------------
1 file changed, 29 insertions(+), 42 deletions(-)
diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
index 0942844..b7c83ca 100644
--- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
+++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
@@ -44,8 +44,7 @@ This program is distributed in the hope that it will be
useful, but WITHOUT ANY
* ADDON RELATED ADDITIONS
*/
/* Constant */
-#define APCI3120_ENABLE_TRANSFER_ADD_ON_LOW 0x00
-#define APCI3120_ENABLE_TRANSFER_ADD_ON_HIGH 0x1200
+#define APCI3120_ENABLE_TRANSFER_ADD_ON 0x12000000
#define APCI3120_A2P_FIFO_MANAGEMENT 0x04000400L
#define APCI3120_AMWEN_ENABLE 0x02
#define APCI3120_A2P_FIFO_WRITE_ENABLE 0x01
@@ -57,12 +56,9 @@ This program is distributed in the hope that it will be
useful, but WITHOUT ANY
#define APCI3120_DISABLE_BUS_MASTER_PCI 0x0
/* ADD_ON ::: this needed since apci supports 16 bit interface to add on */
-#define APCI3120_ADD_ON_AGCSTS_LOW 0x3C
-#define APCI3120_ADD_ON_AGCSTS_HIGH (APCI3120_ADD_ON_AGCSTS_LOW + 2)
-#define APCI3120_ADD_ON_MWAR_LOW 0x24
-#define APCI3120_ADD_ON_MWAR_HIGH (APCI3120_ADD_ON_MWAR_LOW + 2)
-#define APCI3120_ADD_ON_MWTC_LOW 0x058
-#define APCI3120_ADD_ON_MWTC_HIGH (APCI3120_ADD_ON_MWTC_LOW + 2)
+#define APCI3120_ADD_ON_MWAR 0x24
+#define APCI3120_ADD_ON_AGCSTS 0x3c
+#define APCI3120_ADD_ON_MWTC 0x58
/* AMCC */
#define APCI3120_AMCC_OP_MCSR 0x3C
@@ -89,6 +85,20 @@ This program is distributed in the hope that it will be
useful, but WITHOUT ANY
#define APCI3120_COUNTER 3
+static void apci3120_addon_write(struct comedi_device *dev,
+ unsigned int val, unsigned int reg)
+{
+ struct apci3120_private *devpriv = dev->private;
+
+ /* 16-bit interface for AMCC add-on registers */
+
+ outw(reg, devpriv->addon + 0);
+ outw(val & 0xffff, devpriv->addon + 2);
+
+ outw(reg + 2, devpriv->addon + 0);
+ outw((val >> 16) & 0xffff, devpriv->addon + 2);
+}
+
static int apci3120_reset(struct comedi_device *dev)
{
struct apci3120_private *devpriv = dev->private;
@@ -119,10 +129,7 @@ static int apci3120_cancel(struct comedi_device *dev,
outw(0, devpriv->addon + 4);
/* Disable Bus Master ADD ON */
- outw(APCI3120_ADD_ON_AGCSTS_LOW, devpriv->addon + 0);
- outw(0, devpriv->addon + 2);
- outw(APCI3120_ADD_ON_AGCSTS_HIGH, devpriv->addon + 0);
- outw(0, devpriv->addon + 2);
+ apci3120_addon_write(dev, 0, APCI3120_ADD_ON_AGCSTS);
/* Disable BUS Master PCI */
outl(0, devpriv->amcc + AMCC_OP_REG_MCSR);
@@ -213,21 +220,11 @@ static int apci3120_ai_cmdtest(struct comedi_device *dev,
static void apci3120_init_dma(struct comedi_device *dev,
struct apci3120_dmabuf *dmabuf)
{
- struct apci3120_private *devpriv = dev->private;
+ /* DMA Start Address */
+ apci3120_addon_write(dev, dmabuf->hw, APCI3120_ADD_ON_MWAR);
- /* DMA Start Address Low */
- outw(APCI3120_ADD_ON_MWAR_LOW, devpriv->addon + 0);
- outw(dmabuf->hw & 0xffff, devpriv->addon + 2);
- /* DMA Start Address High */
- outw(APCI3120_ADD_ON_MWAR_HIGH, devpriv->addon + 0);
- outw((dmabuf->hw >> 16) & 0xffff, devpriv->addon + 2);
-
- /* Nbr of acquisition LOW */
- outw(APCI3120_ADD_ON_MWTC_LOW, devpriv->addon + 0);
- outw(dmabuf->use_size & 0xffff, devpriv->addon + 2);
- /* Nbr of acquisition HIGH */
- outw(APCI3120_ADD_ON_MWTC_HIGH, devpriv->addon + 0);
- outw((dmabuf->use_size >> 16) & 0xffff, devpriv->addon + 2);
+ /* Nbr of acquisition */
+ apci3120_addon_write(dev, dmabuf->use_size, APCI3120_ADD_ON_MWTC);
}
static void apci3120_setup_dma(struct comedi_device *dev,
@@ -287,13 +284,9 @@ static void apci3120_setup_dma(struct comedi_device *dev,
outl(AGCSTS_TC_ENABLE | AGCSTS_RESET_A2P_FIFO,
devpriv->amcc + AMCC_OP_REG_AGCSTS);
- /* changed since 16 bit interface for add on */
/* ENABLE BUS MASTER */
- outw(APCI3120_ADD_ON_AGCSTS_LOW, devpriv->addon + 0);
- outw(APCI3120_ENABLE_TRANSFER_ADD_ON_LOW, devpriv->addon + 2);
-
- outw(APCI3120_ADD_ON_AGCSTS_HIGH, devpriv->addon + 0);
- outw(APCI3120_ENABLE_TRANSFER_ADD_ON_HIGH, devpriv->addon + 2);
+ apci3120_addon_write(dev, APCI3120_ENABLE_TRANSFER_ADD_ON,
+ APCI3120_ADD_ON_AGCSTS);
/*
* TO VERIFIED BEGIN JK 07.05.04: Comparison between WIN32 and Linux
@@ -468,11 +461,8 @@ static void apci3120_interrupt_dma(int irq, void *d)
ui_Tmp = AGCSTS_TC_ENABLE | AGCSTS_RESET_A2P_FIFO;
outl(ui_Tmp, devpriv->amcc + AMCC_OP_REG_AGCSTS);
- /* changed since 16 bit interface for add on */
- outw(APCI3120_ADD_ON_AGCSTS_LOW, devpriv->addon + 0);
- outw(APCI3120_ENABLE_TRANSFER_ADD_ON_LOW, devpriv->addon + 2);
- outw(APCI3120_ADD_ON_AGCSTS_HIGH, devpriv->addon + 0);
- outw(APCI3120_ENABLE_TRANSFER_ADD_ON_HIGH, devpriv->addon + 2);
/* 0x1000 is out putted in windows driver */
+ apci3120_addon_write(dev, APCI3120_ENABLE_TRANSFER_ADD_ON,
+ APCI3120_ADD_ON_AGCSTS);
apci3120_init_dma(dev, next_dmabuf);
@@ -510,11 +500,8 @@ static void apci3120_interrupt_dma(int irq, void *d)
outl(AGCSTS_TC_ENABLE | AGCSTS_RESET_A2P_FIFO,
devpriv->amcc + AMCC_OP_REG_AGCSTS);
- /* changed since 16 bit interface for add on */
- outw(APCI3120_ADD_ON_AGCSTS_LOW, devpriv->addon + 0);
- outw(APCI3120_ENABLE_TRANSFER_ADD_ON_LOW, devpriv->addon + 2);
- outw(APCI3120_ADD_ON_AGCSTS_HIGH, devpriv->addon + 0);
- outw(APCI3120_ENABLE_TRANSFER_ADD_ON_HIGH, devpriv->addon + 2);
+ apci3120_addon_write(dev, APCI3120_ENABLE_TRANSFER_ADD_ON,
+ APCI3120_ADD_ON_AGCSTS);
/*
* A2P FIFO MANAGEMENT
* A2P fifo reset & transfer control enable
--
2.0.3
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