* [PATCH] rtl8180: implement get_tsf op for mac80211
@ 2010-01-26 21:22 John W. Linville
2010-01-26 22:53 ` Gábor Stefanik
0 siblings, 1 reply; 4+ messages in thread
From: John W. Linville @ 2010-01-26 21:22 UTC (permalink / raw)
To: linux-wireless; +Cc: John W. Linville
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/rtl818x/rtl8180_dev.c | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/rtl818x/rtl8180_dev.c b/drivers/net/wireless/rtl818x/rtl8180_dev.c
index 5a2b719..8dbb504 100644
--- a/drivers/net/wireless/rtl818x/rtl8180_dev.c
+++ b/drivers/net/wireless/rtl818x/rtl8180_dev.c
@@ -761,6 +761,20 @@ static void rtl8180_configure_filter(struct ieee80211_hw *dev,
rtl818x_iowrite32(priv, &priv->map->RX_CONF, priv->rx_conf);
}
+static u64 rtl8180_get_tsf(struct ieee80211_hw *dev)
+{
+ struct rtl8180_priv *priv = dev->priv;
+ u32 tsftl;
+ u64 tsft;
+
+ tsftl = rtl818x_ioread32(priv, &priv->map->TSFT[0]);
+ tsft = rtl818x_ioread32(priv, &priv->map->TSFT[1]);
+ tsft <<= 32;
+ tsft |= tsftl;
+
+ return tsft;
+}
+
static const struct ieee80211_ops rtl8180_ops = {
.tx = rtl8180_tx,
.start = rtl8180_start,
@@ -771,6 +785,7 @@ static const struct ieee80211_ops rtl8180_ops = {
.bss_info_changed = rtl8180_bss_info_changed,
.prepare_multicast = rtl8180_prepare_multicast,
.configure_filter = rtl8180_configure_filter,
+ .get_tsf = rtl8180_get_tsf,
};
static void rtl8180_eeprom_register_read(struct eeprom_93cx6 *eeprom)
--
1.6.2.5
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] rtl8180: implement get_tsf op for mac80211
2010-01-26 21:22 [PATCH] rtl8180: implement get_tsf op for mac80211 John W. Linville
@ 2010-01-26 22:53 ` Gábor Stefanik
2010-01-27 2:10 ` John W. Linville
0 siblings, 1 reply; 4+ messages in thread
From: Gábor Stefanik @ 2010-01-26 22:53 UTC (permalink / raw)
To: John W. Linville; +Cc: linux-wireless
On Tue, Jan 26, 2010 at 10:22 PM, John W. Linville
<linville@tuxdriver.com> wrote:
> Signed-off-by: John W. Linville <linville@tuxdriver.com>
> ---
> drivers/net/wireless/rtl818x/rtl8180_dev.c | 15 +++++++++++++++
> 1 files changed, 15 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/net/wireless/rtl818x/rtl8180_dev.c b/drivers/net/wireless/rtl818x/rtl8180_dev.c
> index 5a2b719..8dbb504 100644
> --- a/drivers/net/wireless/rtl818x/rtl8180_dev.c
> +++ b/drivers/net/wireless/rtl818x/rtl8180_dev.c
> @@ -761,6 +761,20 @@ static void rtl8180_configure_filter(struct ieee80211_hw *dev,
> rtl818x_iowrite32(priv, &priv->map->RX_CONF, priv->rx_conf);
> }
>
> +static u64 rtl8180_get_tsf(struct ieee80211_hw *dev)
> +{
> + struct rtl8180_priv *priv = dev->priv;
> + u32 tsftl;
> + u64 tsft;
> +
> + tsftl = rtl818x_ioread32(priv, &priv->map->TSFT[0]);
> + tsft = rtl818x_ioread32(priv, &priv->map->TSFT[1]);
> + tsft <<= 32;
> + tsft |= tsftl;
> +
> + return tsft;
> +}
Why not:
struct rtl8180_priv *priv = dev->priv;
u64 tsft;
tsft = rtl818x_ioread32(priv, &priv->map->TSFT[0]);
tfst |= rtl818x_ioread32(priv, &priv->map->TSFT[1]) << 32;
return tsft;
> +
> static const struct ieee80211_ops rtl8180_ops = {
> .tx = rtl8180_tx,
> .start = rtl8180_start,
> @@ -771,6 +785,7 @@ static const struct ieee80211_ops rtl8180_ops = {
> .bss_info_changed = rtl8180_bss_info_changed,
> .prepare_multicast = rtl8180_prepare_multicast,
> .configure_filter = rtl8180_configure_filter,
> + .get_tsf = rtl8180_get_tsf,
> };
>
> static void rtl8180_eeprom_register_read(struct eeprom_93cx6 *eeprom)
> --
> 1.6.2.5
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
--
Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-)
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] rtl8180: implement get_tsf op for mac80211
2010-01-26 22:53 ` Gábor Stefanik
@ 2010-01-27 2:10 ` John W. Linville
2010-01-27 4:48 ` Gábor Stefanik
0 siblings, 1 reply; 4+ messages in thread
From: John W. Linville @ 2010-01-27 2:10 UTC (permalink / raw)
To: Gábor Stefanik; +Cc: linux-wireless
On Tue, Jan 26, 2010 at 11:53:38PM +0100, Gábor Stefanik wrote:
> On Tue, Jan 26, 2010 at 10:22 PM, John W. Linville
> <linville@tuxdriver.com> wrote:
> > Signed-off-by: John W. Linville <linville@tuxdriver.com>
> > ---
> > drivers/net/wireless/rtl818x/rtl8180_dev.c | 15 +++++++++++++++
> > 1 files changed, 15 insertions(+), 0 deletions(-)
> >
> > diff --git a/drivers/net/wireless/rtl818x/rtl8180_dev.c b/drivers/net/wireless/rtl818x/rtl8180_dev.c
> > index 5a2b719..8dbb504 100644
> > --- a/drivers/net/wireless/rtl818x/rtl8180_dev.c
> > +++ b/drivers/net/wireless/rtl818x/rtl8180_dev.c
> > @@ -761,6 +761,20 @@ static void rtl8180_configure_filter(struct ieee80211_hw *dev,
> > rtl818x_iowrite32(priv, &priv->map->RX_CONF, priv->rx_conf);
> > }
> >
> > +static u64 rtl8180_get_tsf(struct ieee80211_hw *dev)
> > +{
> > + struct rtl8180_priv *priv = dev->priv;
> > + u32 tsftl;
> > + u64 tsft;
> > +
> > + tsftl = rtl818x_ioread32(priv, &priv->map->TSFT[0]);
> > + tsft = rtl818x_ioread32(priv, &priv->map->TSFT[1]);
> > + tsft <<= 32;
> > + tsft |= tsftl;
> > +
> > + return tsft;
> > +}
>
> Why not:
>
> struct rtl8180_priv *priv = dev->priv;
> u64 tsft;
>
> tsft = rtl818x_ioread32(priv, &priv->map->TSFT[0]);
> tfst |= rtl818x_ioread32(priv, &priv->map->TSFT[1]) << 32;
>
> return tsft;
What difference does it make?
John
--
John W. Linville Someday the world will need a hero, and you
linville@tuxdriver.com might be all we have. Be ready.
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] rtl8180: implement get_tsf op for mac80211
2010-01-27 2:10 ` John W. Linville
@ 2010-01-27 4:48 ` Gábor Stefanik
0 siblings, 0 replies; 4+ messages in thread
From: Gábor Stefanik @ 2010-01-27 4:48 UTC (permalink / raw)
To: John W. Linville; +Cc: linux-wireless
2010/1/27 John W. Linville <linville@tuxdriver.com>:
> On Tue, Jan 26, 2010 at 11:53:38PM +0100, Gábor Stefanik wrote:
>> On Tue, Jan 26, 2010 at 10:22 PM, John W. Linville
>> <linville@tuxdriver.com> wrote:
>> > Signed-off-by: John W. Linville <linville@tuxdriver.com>
>> > ---
>> > drivers/net/wireless/rtl818x/rtl8180_dev.c | 15 +++++++++++++++
>> > 1 files changed, 15 insertions(+), 0 deletions(-)
>> >
>> > diff --git a/drivers/net/wireless/rtl818x/rtl8180_dev.c b/drivers/net/wireless/rtl818x/rtl8180_dev.c
>> > index 5a2b719..8dbb504 100644
>> > --- a/drivers/net/wireless/rtl818x/rtl8180_dev.c
>> > +++ b/drivers/net/wireless/rtl818x/rtl8180_dev.c
>> > @@ -761,6 +761,20 @@ static void rtl8180_configure_filter(struct ieee80211_hw *dev,
>> > rtl818x_iowrite32(priv, &priv->map->RX_CONF, priv->rx_conf);
>> > }
>> >
>> > +static u64 rtl8180_get_tsf(struct ieee80211_hw *dev)
>> > +{
>> > + struct rtl8180_priv *priv = dev->priv;
>> > + u32 tsftl;
>> > + u64 tsft;
>> > +
>> > + tsftl = rtl818x_ioread32(priv, &priv->map->TSFT[0]);
>> > + tsft = rtl818x_ioread32(priv, &priv->map->TSFT[1]);
>> > + tsft <<= 32;
>> > + tsft |= tsftl;
>> > +
>> > + return tsft;
>> > +}
>>
>> Why not:
>>
>> struct rtl8180_priv *priv = dev->priv;
>> u64 tsft;
>>
>> tsft = rtl818x_ioread32(priv, &priv->map->TSFT[0]);
>> tfst |= rtl818x_ioread32(priv, &priv->map->TSFT[1]) << 32;
>>
>> return tsft;
>
> What difference does it make?
>
> John
The primary difference is that it is significantly shorter, and gets
away without a temp variable.
(This is like writing
driver_write32(dev, reg, driver_read32(dev, reg) | 0x80);
instead of
tmp = driver_read32(dev, reg);
tmp |= 0x80;
driver_write32(dev, reg, tmp);
Saves some code.)
> --
> John W. Linville Someday the world will need a hero, and you
> linville@tuxdriver.com might be all we have. Be ready.
>
--
Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-)
^ permalink raw reply [flat|nested] 4+ messages in thread
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2010-01-26 21:22 [PATCH] rtl8180: implement get_tsf op for mac80211 John W. Linville
2010-01-26 22:53 ` Gábor Stefanik
2010-01-27 2:10 ` John W. Linville
2010-01-27 4:48 ` Gábor Stefanik
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