diff options
author | Jonathan Lemon <jonathan.lemon@gmail.com> | 2021-09-14 19:16:29 -0700 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2021-09-15 11:10:01 +0100 |
commit | 065efcc5e976d5e14d04c33e1509caca519b1cf4 (patch) | |
tree | bdc0aaaf893d6bf31b196003c9e594d414b03119 /drivers | |
parent | 89260d878253f44bdbb76bcfe18e4a237b0d9d1a (diff) | |
download | linux-065efcc5e976d5e14d04c33e1509caca519b1cf4.tar.bz2 |
ptp: ocp: Separate the init and info logic
On startup, parts of the FPGA need to be initialized - break these
out into their own functions, separate from the purely informational
blocks.
On startup, distrbute the UTC:TAI offset from the NMEA GNSS parser,
if it is available.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/ptp/ptp_ocp.c | 96 |
1 files changed, 60 insertions, 36 deletions
diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c index 2c3af3c9def7..ea12f685edf6 100644 --- a/drivers/ptp/ptp_ocp.c +++ b/drivers/ptp/ptp_ocp.c @@ -72,7 +72,7 @@ struct tod_reg { u32 status; u32 uart_polarity; u32 version; - u32 correction_sec; + u32 adj_sec; u32 __pad0[3]; u32 uart_baud; u32 __pad1[3]; @@ -728,16 +728,15 @@ ptp_ocp_init_clock(struct ptp_ocp *bp) sync = ioread32(&bp->reg->status) & OCP_STATUS_IN_SYNC; if (!sync) { - ktime_get_real_ts64(&ts); + ktime_get_clocktai_ts64(&ts); ptp_ocp_settime(&bp->ptp_info, &ts); } - if (!ptp_ocp_gettimex(&bp->ptp_info, &ts, NULL)) - dev_info(&bp->pdev->dev, "Time: %lld.%ld, %s\n", - ts.tv_sec, ts.tv_nsec, - sync ? "in-sync" : "UNSYNCED"); - timer_setup(&bp->watchdog, ptp_ocp_watchdog, 0); - mod_timer(&bp->watchdog, jiffies + HZ); + /* If there is a clock supervisor, then enable the watchdog */ + if (bp->pps_to_clk) { + timer_setup(&bp->watchdog, ptp_ocp_watchdog, 0); + mod_timer(&bp->watchdog, jiffies + HZ); + } return 0; } @@ -760,6 +759,21 @@ ptp_ocp_utc_distribute(struct ptp_ocp *bp, u32 val) } static void +ptp_ocp_tod_init(struct ptp_ocp *bp) +{ + u32 ctrl, reg; + + ctrl = ioread32(&bp->tod->ctrl); + ctrl |= TOD_CTRL_PROTOCOL | TOD_CTRL_ENABLE; + ctrl &= ~(TOD_CTRL_DISABLE_FMT_A | TOD_CTRL_DISABLE_FMT_B); + iowrite32(ctrl, &bp->tod->ctrl); + + reg = ioread32(&bp->tod->utc_status); + if (reg & TOD_STATUS_UTC_VALID) + ptp_ocp_utc_distribute(bp, reg & TOD_STATUS_UTC_MASK); +} + +static void ptp_ocp_tod_info(struct ptp_ocp *bp) { static const char * const proto_name[] = { @@ -777,11 +791,6 @@ ptp_ocp_tod_info(struct ptp_ocp *bp) version >> 24, (version >> 16) & 0xff, version & 0xffff); ctrl = ioread32(&bp->tod->ctrl); - ctrl |= TOD_CTRL_PROTOCOL | TOD_CTRL_ENABLE; - ctrl &= ~(TOD_CTRL_DISABLE_FMT_A | TOD_CTRL_DISABLE_FMT_B); - iowrite32(ctrl, &bp->tod->ctrl); - - ctrl = ioread32(&bp->tod->ctrl); idx = ctrl & TOD_CTRL_PROTOCOL ? 4 : 0; idx += (ctrl >> 16) & 3; dev_info(&bp->pdev->dev, "control: %x\n", ctrl); @@ -795,7 +804,7 @@ ptp_ocp_tod_info(struct ptp_ocp *bp) reg = ioread32(&bp->tod->status); dev_info(&bp->pdev->dev, "status: %x\n", reg); - reg = ioread32(&bp->tod->correction_sec); + reg = ioread32(&bp->tod->adj_sec); dev_info(&bp->pdev->dev, "correction: %d\n", reg); reg = ioread32(&bp->tod->utc_status); @@ -879,22 +888,6 @@ out: put_device(dev); } -static void -ptp_ocp_info(struct ptp_ocp *bp) -{ - u32 version, select; - - version = ioread32(&bp->reg->version); - select = ioread32(&bp->reg->select); - dev_info(&bp->pdev->dev, "Version %d.%d.%d, clock %s, device ptp%d\n", - version >> 24, (version >> 16) & 0xff, version & 0xffff, - ptp_ocp_select_name_from_val(ptp_ocp_clock, select >> 16), - ptp_clock_index(bp->ptp)); - - if (bp->tod) - ptp_ocp_tod_info(bp); -} - static struct device * ptp_ocp_find_flash(struct ptp_ocp *bp) { @@ -1278,6 +1271,8 @@ ptp_ocp_fb_board_init(struct ptp_ocp *bp, struct ocp_resource *r) { bp->flash_start = 1024 * 4096; + ptp_ocp_tod_init(bp); + return ptp_ocp_init_clock(bp); } @@ -1927,10 +1922,42 @@ ptp_ocp_complete(struct ptp_ocp *bp) } static void -ptp_ocp_resource_summary(struct ptp_ocp *bp) +ptp_ocp_phc_info(struct ptp_ocp *bp) +{ + struct timespec64 ts; + u32 version, select; + bool sync; + + version = ioread32(&bp->reg->version); + select = ioread32(&bp->reg->select); + dev_info(&bp->pdev->dev, "Version %d.%d.%d, clock %s, device ptp%d\n", + version >> 24, (version >> 16) & 0xff, version & 0xffff, + ptp_ocp_select_name_from_val(ptp_ocp_clock, select >> 16), + ptp_clock_index(bp->ptp)); + + sync = ioread32(&bp->reg->status) & OCP_STATUS_IN_SYNC; + if (!ptp_ocp_gettimex(&bp->ptp_info, &ts, NULL)) + dev_info(&bp->pdev->dev, "Time: %lld.%ld, %s\n", + ts.tv_sec, ts.tv_nsec, + sync ? "in-sync" : "UNSYNCED"); +} + +static void +ptp_ocp_serial_info(struct device *dev, const char *name, int port, int baud) +{ + if (port != -1) + dev_info(dev, "%5s: /dev/ttyS%-2d @ %6d\n", name, port, baud); +} + +static void +ptp_ocp_info(struct ptp_ocp *bp) { struct device *dev = &bp->pdev->dev; + ptp_ocp_phc_info(bp); + if (bp->tod) + ptp_ocp_tod_info(bp); + if (bp->image) { u32 ver = ioread32(&bp->image->version); @@ -1942,10 +1969,8 @@ ptp_ocp_resource_summary(struct ptp_ocp *bp) dev_info(dev, "golden image, version %d\n", ver >> 16); } - if (bp->gnss_port != -1) - dev_info(dev, "GNSS @ /dev/ttyS%d 115200\n", bp->gnss_port); - if (bp->mac_port != -1) - dev_info(dev, "MAC @ /dev/ttyS%d 57600\n", bp->mac_port); + ptp_ocp_serial_info(dev, "GNSS", bp->gnss_port, 115200); + ptp_ocp_serial_info(dev, "MAC", bp->mac_port, 57600); } static void @@ -2049,7 +2074,6 @@ ptp_ocp_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto out; ptp_ocp_info(bp); - ptp_ocp_resource_summary(bp); return 0; |