diff options
Diffstat (limited to 'drivers/usb/musb')
| -rw-r--r-- | drivers/usb/musb/musb_dsps.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 09648b4e40c2..b23ad150a165 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -615,6 +615,24 @@ static int dsps_musb_recover(struct musb *musb) return session_restart ? 0 : -EPIPE; } +/* Similar to am35x, dm81xx support only 32-bit read operation */ +static void dsps_read_fifo32(struct musb_hw_ep *hw_ep, u16 len, u8 *dst) +{ + void __iomem *fifo = hw_ep->fifo; + + if (len >= 4) { + readsl(fifo, dst, len >> 2); + dst += len & ~0x03; + len &= 0x03; + } + + /* Read any remaining 1 to 3 bytes */ + if (len > 0) { + u32 val = musb_readl(fifo, 0); + memcpy(dst, &val, len); + } +} + static struct musb_platform_ops dsps_ops = { .quirks = MUSB_INDEXED_EP, .init = dsps_musb_init, @@ -761,6 +779,9 @@ static int dsps_probe(struct platform_device *pdev) } wrp = match->data; + if (of_device_is_compatible(pdev->dev.of_node, "ti,musb-dm816")) + dsps_ops.read_fifo = dsps_read_fifo32; + /* allocate glue */ glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); if (!glue) @@ -837,7 +858,9 @@ static const struct dsps_musb_wrapper am33xx_driver_data = { static const struct of_device_id musb_dsps_of_match[] = { { .compatible = "ti,musb-am33xx", - .data = (void *) &am33xx_driver_data, }, + .data = &am33xx_driver_data, }, + { .compatible = "ti,musb-dm816", + .data = &am33xx_driver_data, }, { }, }; MODULE_DEVICE_TABLE(of, musb_dsps_of_match); |