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[v3,0/5] usb: musb: da8xx: Add DMA support

Message ID 20170119140835.18981-1-abailon@baylibre.com
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Series usb: musb: da8xx: Add DMA support | expand

Message

Alexandre Bailon Jan. 19, 2017, 2:08 p.m. UTC 
This series update MUSB driver to add DMA support to DA8xx.
It should be applied on top of
"[PATCH v3 0/3] usb: musb: cppi41: Add a way to manage DMA irq" but
"[PATCH v3 0/3] dmaengine: cppi41: Add dma support to da8xx" and
"[PATCH] arm: davinci: Make the usb20 clock available to PM runtime"
are required to make it work.

Changes in v3:
- Remove PM runtime callbacks.
  I have update arch/arm/mach-davinci/pm_domain.c to let PM runtime control
  the usb20 clock.
- Only use PM runtime sync operation.

Changes in v2:
- Clock and IRQ management has been moved to MUSB DA8xx glue
  (was in CPPI 4.1 driver)
- I have added a partial support PM runtime. The goal was to use PM
  runtime to manage clock of MUSB and CPPI 4.1 (they use the same clock).
- CPPI 4.1 is now achild of MUSB DA8xx glue.

Alexandre Bailon (5):
  usb: musb: da8xx: Remove CPPI 3.0 quirk and methods
  usb: musb: Use shared irq
  usb: musb: Add support of CPPI 4.1 DMA controller to DA8xx
  usb: musb: musb_cppi41: Workaround DMA stall issue during teardown
  usb: musb: da8xx: Add a primary support of PM runtime

 drivers/usb/musb/Kconfig       |  4 +--
 drivers/usb/musb/da8xx.c       | 60 +++++++++++++++++++++++++++---------------
 drivers/usb/musb/musb_core.c   |  2 +-
 drivers/usb/musb/musb_core.h   |  1 +
 drivers/usb/musb/musb_cppi41.c |  4 +++
 5 files changed, 47 insertions(+), 24 deletions(-)

-- 
2.10.2

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Comments

Sekhar Nori Jan. 20, 2017, 5:40 a.m. UTC | #1 
On Thursday 19 January 2017 10:12 PM, Sergei Shtylyov wrote:
> On 01/19/2017 05:08 PM, Alexandre Bailon wrote:

> 

>> Currently, DA8xx doesn't support PM runtime.

>> In addition, the glue driver is managing the clock itself.

>> But the CPPI DMA needs to manage this clock too.

>> Add support to PM runtime and use the callback to enable / disable

>> the clock.

> 

>    I think this sentence is stale now....


And please clarify what you mean by "DA8xx doesn't support PM runtime."
because we do have drivers using PM runtime being used on DA8xx.

Thanks,
Sekhar
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