Hi Sekhar, Thanks for the feedback. On Tue, Jun 18, 2013 at 5:19 AM, Sekhar Nori <nsekhar@xxxxxx> wrote: > On 6/18/2013 12:08 PM, Joel A Fernandes wrote: >> From: Matt Porter <mporter@xxxxxx> >> >> Changes by Joel: >> * Split EDMA xbar support out of original EDMA DT parsing patch >> to keep it easier for review. >> * Rewrite shift and offset calculation. >> >> Suggested-by: Sekhar Nori <nsekhar@xxxxxx> >> Suggested by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx> >> Signed-off-by: Joel A Fernandes <joelagnel@xxxxxx> >> >> Reference: >> [1] https://patchwork.kernel.org/patch/2226991/ >> --- >> arch/arm/common/edma.c | 59 ++++++++++++++++++++++++++++++++++++ >> include/linux/platform_data/edma.h | 1 + >> 2 files changed, 60 insertions(+) >> >> diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c >> index 9823b79..1c2fb15 100644 >> --- a/arch/arm/common/edma.c >> +++ b/arch/arm/common/edma.c >> @@ -1410,6 +1410,52 @@ static int edma_of_read_u32_to_s16_array(const struct device_node *np, >> return 0; >> } >> >> +static int edma_xbar_event_map(struct device *dev, >> + struct device_node *node, >> + struct edma_soc_info *pdata, int len) >> +{ >> + int ret = 0; >> + int i; >> + struct resource res; >> + void *xbar; > > void __iomem *xbar; OK. >> + const s16 (*xbar_chans)[2]; >> + u32 shift, offset, mux; >> + >> + xbar_chans = devm_kzalloc(dev, >> + len/sizeof(s16) + 2*sizeof(s16), >> + GFP_KERNEL); >> + if (!xbar_chans) >> + return -ENOMEM; >> + >> + ret = of_address_to_resource(node, 1, &res); >> + if (ret) >> + return -EIO; >> + >> + xbar = devm_ioremap(dev, res.start, resource_size(&res)); >> + if (!xbar) >> + return -ENOMEM; >> + >> + ret = edma_of_read_u32_to_s16_array(node, >> + "ti,edma-xbar-event-map", >> + (s16 *)xbar_chans, >> + len/sizeof(u32)); >> + if (ret) >> + return -EIO; >> + >> + for (i = 0; xbar_chans[i][0] != -1; i++) { >> + shift = (xbar_chans[i][1] & 0x03) << 3; >> + offset = xbar_chans[i][1] & 0xfffffffc; >> + mux = readl((void *)((u32)xbar + offset)); > > Please drop unnecessary casting. Simply: Done. > > mux = readl(xbar + offset); > >> + mux &= ~(0xff << shift); >> + mux |= xbar_chans[i][0] << shift; >> + writel(mux, (void *)((u32)xbar + offset)); > > Fix the writel likewise. Done. >> } >> >> + /* Clear the xbar mapped channels in unused list */ >> + xbar_chans = info[j]->xbar_chans; >> + if (xbar_chans) { >> + for (i = 0; xbar_chans[i][1] != -1; i++) { >> + off = xbar_chans[i][1]; >> + clear_bits(off, 1, >> + edma_cc[j]->edma_unused); > > Please fix the alignment here. I noticed the alignment was off in a few other places in that driver. Fixed those up too. Thanks, Joel -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
