On Tue, Mar 13, 2012 at 04:27:37PM +0530, Shantanu Gupta wrote: > Any info available(publicly) on so as to what all chipsets have this capability > ? The ADM hardware is in every currently available MSM that can run Linux. It is being phased out, to be replaced by a new DMA system (SPS/BAM). Fortunately, there are some chips (MSM8960) that have both ADM and SPS/BAM so there should be time to get those drivers in. At least as my memory serves me: 7201 - ADM 8250 - ADM 8660 - 2 ADMs, SPS/BAM 8960 - 1 ADM, SPS/BAM The ADM is mostly a regular DMA-type device. Each channel can be associated with a rate-control channel, which is needed for some devices. It also has a mode called "box mode", which works kind of like a self-repeating scatter list. This mode is needed for some of the peripherals also on the MSM. David > On Tue, Mar 13, 2012 at 1:44 AM, Daniel Walker <dwalker@xxxxxxxxxx> wrote: > > On Mon, Mar 12, 2012 at 04:02:44PM +0530, Ravi Kumar V wrote: > > Add DMAEngine based driver using the old MSM DMA APIs internally. > > What do you mean by this? > > > The benefit of this approach is that not all the drivers > > have to get converted to DMAEngine APIs simultaneosly while > > both the drivers can stay enabled in the kernel. The client > > drivers using the old MSM APIs directly can now convert to > > DMAEngine one by one. > > Which drivers? > > Daniel > -- > To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- Sent by an employee of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum. -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
