5 Aug
2015
5 Aug
'15
8:48 p.m.
On Wednesday, August 05, 2015 at 08:31:54 PM, slemieux.tyco@gmail.com wrote:
From: Sylvain Lemieux slemieux@tycoint.com
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 slemieux@tycoint.com
[...]
+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 marex@denx.de
Best regards, Marek Vasut