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Date: Tue, 30 Nov 2010 13:34:30 +0900 From: Tomoya MORINAGA <tomoya-linux@....okisemi.com> To: Wolfgang Grandegger <wg@...ndegger.com>, Wolfram Sang <w.sang@...gutronix.de>, Christian Pellegrin <chripell@...e.org>, Barry Song <21cnbao@...il.com>, Samuel Ortiz <sameo@...ux.intel.com>, socketcan-core@...ts.berlios.de, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, "David S. Miller" <davem@...emloft.net> CC: qi.wang@...el.com, yong.y.wang@...el.com, andrew.chih.howe.khor@...el.com, joel.clark@...el.com, kok.howg.ewe@...el.com, margie.foster@...el.com Subject: [PATCH net-next-2.6 v6 13/20] can: EG20T PCH: Fix bit timing calculation issue Modify to use calculated value directly passed by CAN core module. Signed-off-by: Tomoya MORINAGA <tomoya-linux@....okisemi.com> Acked-by: Marc Kleine-Budde <mkl@...gutronix.de> --- drivers/net/can/pch_can.c | 6 ++---- 1 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c index 9f5241b..b57b505 100644 --- a/drivers/net/can/pch_can.c +++ b/drivers/net/can/pch_can.c @@ -792,17 +792,15 @@ static int pch_set_bittiming(struct net_device *ndev) const struct can_bittiming *bt = &priv->can.bittiming; u32 canbit; u32 bepe; - u32 brp; /* Setting the CCE bit for accessing the Can Timing register. */ pch_can_bit_set(&priv->regs->cont, PCH_CTRL_CCE); - brp = (bt->tq) / (1000000000/PCH_CAN_CLK) - 1; - canbit = brp & PCH_MSK_BITT_BRP; + canbit = (bt->brp - 1) & PCH_MSK_BITT_BRP; canbit |= (bt->sjw - 1) << PCH_BIT_SJW_SHIFT; canbit |= (bt->phase_seg1 + bt->prop_seg - 1) << PCH_BIT_TSEG1_SHIFT; canbit |= (bt->phase_seg2 - 1) << PCH_BIT_TSEG2_SHIFT; - bepe = (brp & PCH_MSK_BRPE_BRPE) >> PCH_BIT_BRPE_BRPE_SHIFT; + bepe = ((bt->brp - 1) & PCH_MSK_BRPE_BRPE) >> PCH_BIT_BRPE_BRPE_SHIFT; iowrite32(canbit, &priv->regs->bitt); iowrite32(bepe, &priv->regs->brpe); pch_can_bit_clear(&priv->regs->cont, PCH_CTRL_CCE); -- 1.6.0.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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