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author | Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de> | 2015-10-23 13:30:20 +0200 |
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committer | Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de> | 2015-10-23 13:30:20 +0200 |
commit | e7549b926dd3ceec048f5689df90d4ec970c9419 (patch) | |
tree | c8645e0b4343c309aac1a3838a17cfcf0893d7b5 /drivers/infiniband/hw/qib/qib_qsfp.c | |
parent | 499ba610c2829adafbf393c2f3773d73ae4445f3 (diff) | |
download | kernel_samsung_smdk4412-e7549b926dd3ceec048f5689df90d4ec970c9419.zip kernel_samsung_smdk4412-e7549b926dd3ceec048f5689df90d4ec970c9419.tar.gz kernel_samsung_smdk4412-e7549b926dd3ceec048f5689df90d4ec970c9419.tar.bz2 |
more driver stuff from 3.2.72
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_qsfp.c')
-rw-r--r-- | drivers/infiniband/hw/qib/qib_qsfp.c | 35 |
1 files changed, 14 insertions, 21 deletions
diff --git a/drivers/infiniband/hw/qib/qib_qsfp.c b/drivers/infiniband/hw/qib/qib_qsfp.c index 3374a52..fa71b1e 100644 --- a/drivers/infiniband/hw/qib/qib_qsfp.c +++ b/drivers/infiniband/hw/qib/qib_qsfp.c @@ -273,18 +273,12 @@ int qib_refresh_qsfp_cache(struct qib_pportdata *ppd, struct qib_qsfp_cache *cp) int ret; int idx; u16 cks; - u32 mask; u8 peek[4]; /* ensure sane contents on invalid reads, for cable swaps */ memset(cp, 0, sizeof(*cp)); - mask = QSFP_GPIO_MOD_PRS_N; - if (ppd->hw_pidx) - mask <<= QSFP_GPIO_PORT2_SHIFT; - - ret = ppd->dd->f_gpio_mod(ppd->dd, 0, 0, 0); - if (ret & mask) { + if (!qib_qsfp_mod_present(ppd)) { ret = -ENODEV; goto bail; } @@ -444,6 +438,19 @@ const char * const qib_qsfp_devtech[16] = { static const char *pwr_codes = "1.5W2.0W2.5W3.5W"; +int qib_qsfp_mod_present(struct qib_pportdata *ppd) +{ + u32 mask; + int ret; + + mask = QSFP_GPIO_MOD_PRS_N << + (ppd->hw_pidx * QSFP_GPIO_PORT2_SHIFT); + ret = ppd->dd->f_gpio_mod(ppd->dd, 0, 0, 0); + + return !((ret & mask) >> + ((ppd->hw_pidx * QSFP_GPIO_PORT2_SHIFT) + 3)); +} + /* * Initialize structures that control access to QSFP. Called once per port * on cards that support QSFP. @@ -452,7 +459,6 @@ void qib_qsfp_init(struct qib_qsfp_data *qd, void (*fevent)(struct work_struct *)) { u32 mask, highs; - int pins; struct qib_devdata *dd = qd->ppd->dd; @@ -474,19 +480,6 @@ void qib_qsfp_init(struct qib_qsfp_data *qd, udelay(20); /* Generous RST dwell */ dd->f_gpio_mod(dd, mask, mask, mask); - /* Spec says module can take up to two seconds! */ - mask = QSFP_GPIO_MOD_PRS_N; - if (qd->ppd->hw_pidx) - mask <<= QSFP_GPIO_PORT2_SHIFT; - - /* Do not try to wait here. Better to let event handle it */ - pins = dd->f_gpio_mod(dd, 0, 0, 0); - if (pins & mask) - goto bail; - /* We see a module, but it may be unwise to look yet. Just schedule */ - qd->t_insert = get_jiffies_64(); - queue_work(ib_wq, &qd->work); -bail: return; } |