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net: fec: Move fec_ptp_read() to the top of the file

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commit 4374a1fe58 upstream.

This function is used in `fec_ptp_enable_pps()` through
struct cyclecounter read(). Moving the declaration makes
it clearer, what's happening.

Suggested-by: Frank Li <Frank.li@nxp.com>
Link: https://lore.kernel.org/netdev/20240805144754.2384663-1-csokas.bence@prolan.hu/T/#ma6c21ad264016c24612048b1483769eaff8cdf20
Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20240812094713.2883476-1-csokas.bence@prolan.hu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Csókás, Bence 2024-08-12 11:47:13 +02:00 committed by Greg Kroah-Hartman
parent 677f1df179
commit 1e1eb62c40
1 changed files with 25 additions and 25 deletions
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50
drivers/net/ethernet/freescale/fec_ptp.c
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@ -90,6 +90,30 @@
#define FEC_PTP_MAX_NSEC_PERIOD 4000000000ULL
#define FEC_PTP_MAX_NSEC_COUNTER 0x80000000ULL
/**
* fec_ptp_read - read raw cycle counter (to be used by time counter)
* @cc: the cyclecounter structure
*
* this function reads the cyclecounter registers and is called by the
* cyclecounter structure used to construct a ns counter from the
* arbitrary fixed point registers
*/
static u64 fec_ptp_read(const struct cyclecounter *cc)
{
struct fec_enet_private *fep =
container_of(cc, struct fec_enet_private, cc);
u32 tempval;
tempval = readl(fep->hwp + FEC_ATIME_CTRL);
tempval |= FEC_T_CTRL_CAPTURE;
writel(tempval, fep->hwp + FEC_ATIME_CTRL);
if (fep->quirks & FEC_QUIRK_BUG_CAPTURE)
udelay(1);
return readl(fep->hwp + FEC_ATIME);
}
/**
* fec_ptp_enable_pps
* @fep: the fec_enet_private structure handle
@ -136,7 +160,7 @@ static int fec_ptp_enable_pps(struct fec_enet_private *fep, uint enable)
* NSEC_PER_SEC - ts.tv_nsec. Add the remaining nanoseconds
* to current timer would be next second.
*/
tempval = fep->cc.read(&fep->cc);
tempval = fec_ptp_read(&fep->cc);
/* Convert the ptp local counter to 1588 timestamp */
ns = timecounter_cyc2time(&fep->tc, tempval);
ts = ns_to_timespec64(ns);
@ -271,30 +295,6 @@ static enum hrtimer_restart fec_ptp_pps_perout_handler(struct hrtimer *timer)
return HRTIMER_NORESTART;
}
/**
* fec_ptp_read - read raw cycle counter (to be used by time counter)
* @cc: the cyclecounter structure
*
* this function reads the cyclecounter registers and is called by the
* cyclecounter structure used to construct a ns counter from the
* arbitrary fixed point registers
*/
static u64 fec_ptp_read(const struct cyclecounter *cc)
{
struct fec_enet_private *fep =
container_of(cc, struct fec_enet_private, cc);
u32 tempval;
tempval = readl(fep->hwp + FEC_ATIME_CTRL);
tempval |= FEC_T_CTRL_CAPTURE;
writel(tempval, fep->hwp + FEC_ATIME_CTRL);
if (fep->quirks & FEC_QUIRK_BUG_CAPTURE)
udelay(1);
return readl(fep->hwp + FEC_ATIME);
}
/**
* fec_ptp_start_cyclecounter - create the cycle counter from hw
* @ndev: network device