On Wednesday, August 05, 2015 at 08:31:54 PM, [email protected] wrote:
> From: Sylvain Lemieux <[email protected]>
>
> Incorporate DMA driver from legacy LPCLinux NXP BSP.
> The files taken from the legacy patch are:
> - lpc32xx DMA driver
> - lpc3250 header file DMA registers definition.
>
> The legacy driver was updated and clean-up as part of the integration with
> the latest u-boot.
>
> Signed-off-by: Sylvain Lemieux <[email protected]>
[...]
> +int lpc32xx_dma_wait_status(int channel)
> +{
> + unsigned long start;
> + u32 reg;
> +
> + start = get_timer(0);
> + while (1) {
> + reg = readl(&dma->raw_tc_stat);
> + reg |= readl(dma->raw_err_stat);
> + if (reg & BIT_MASK(channel))
> + break;
> +
> + if (get_timer(start) > 10000)
> + return -1;
return -ETIMEDOUT;
> + udelay(1);
> + }
> +
> + if (unlikely(readl(&dma->raw_err_stat) & BIT_MASK(channel))) {
> + setbits_le32(&dma->int_err_clear, BIT_MASK(channel));
> + setbits_le32(&dma->raw_err_stat, BIT_MASK(channel));
> + return -1;
> + }
> + setbits_le32(&dma->int_tc_clear, BIT_MASK(channel));
> + setbits_le32(&dma->raw_tc_stat, BIT_MASK(channel));
> + return 0;
> +}
Acked-by: Marek Vasut <[email protected]>
Best regards,
Marek Vasut
_______________________________________________
U-Boot mailing list
[email protected]
http://lists.denx.de/mailman/listinfo/u-boot
