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can: c_can: Cleanup c_can_msg_obj_put/get() 

Sigh!

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Thomas Gleixner 2014-04-11 08:13:20 +00:00 коммит произвёл Marc Kleine-Budde
Родитель b07faaaf1f
Коммит 7af28630b8
1 изменённых файлов: 16 добавлений и 44 удалений
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60
drivers/net/can/c_can/c_can.c
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@ -261,61 +261,33 @@ static void c_can_irq_control(struct c_can_priv *priv, bool enable)
priv->write_reg(priv, C_CAN_CTRL_REG, ctrl);
}
static inline int c_can_msg_obj_is_busy(struct c_can_priv *priv, int iface)
static void c_can_obj_update(struct net_device *dev, int iface, u32 cmd, u32 obj)
{
int count = MIN_TIMEOUT_VALUE;
struct c_can_priv *priv = netdev_priv(dev);
int cnt, reg = C_CAN_IFACE(COMREQ_REG, iface);
while (count && priv->read_reg(priv,
C_CAN_IFACE(COMREQ_REG, iface)) &
IF_COMR_BUSY) {
count--;
priv->write_reg(priv, reg + 1, cmd);
priv->write_reg(priv, reg, obj);
for (cnt = MIN_TIMEOUT_VALUE; cnt; cnt--) {
if (!(priv->read_reg(priv, reg) & IF_COMR_BUSY))
return;
udelay(1);
}
netdev_err(dev, "Updating object timed out\n");
if (!count)
return 1;
return 0;
}
static inline void c_can_object_get(struct net_device *dev,
int iface, int objno, int mask)
static inline void c_can_object_get(struct net_device *dev, int iface,
u32 obj, u32 cmd)
{
struct c_can_priv *priv = netdev_priv(dev);
/*
* As per specs, after writting the message object number in the
* IF command request register the transfer b/w interface
* register and message RAM must be complete in 6 CAN-CLK
* period.
*/
priv->write_reg(priv, C_CAN_IFACE(COMMSK_REG, iface),
IFX_WRITE_LOW_16BIT(mask));
priv->write_reg(priv, C_CAN_IFACE(COMREQ_REG, iface),
IFX_WRITE_LOW_16BIT(objno));
if (c_can_msg_obj_is_busy(priv, iface))
netdev_err(dev, "timed out in object get\n");
c_can_obj_update(dev, iface, cmd, obj);
}
static inline void c_can_object_put(struct net_device *dev,
int iface, int objno, int mask)
static inline void c_can_object_put(struct net_device *dev, int iface,
u32 obj, u32 cmd)
{
struct c_can_priv *priv = netdev_priv(dev);
/*
* As per specs, after writting the message object number in the
* IF command request register the transfer b/w interface
* register and message RAM must be complete in 6 CAN-CLK
* period.
*/
priv->write_reg(priv, C_CAN_IFACE(COMMSK_REG, iface),
(IF_COMM_WR | IFX_WRITE_LOW_16BIT(mask)));
priv->write_reg(priv, C_CAN_IFACE(COMREQ_REG, iface),
IFX_WRITE_LOW_16BIT(objno));
if (c_can_msg_obj_is_busy(priv, iface))
netdev_err(dev, "timed out in object put\n");
c_can_obj_update(dev, iface, cmd | IF_COMM_WR, obj);
}
static void c_can_write_msg_object(struct net_device *dev,