| From: |
| Sebastian Reichel <sre@debian.org> |
| To: |
| Sebastian Reichel <sre@ring0.de>, Linus Walleij <linus.walleij@linaro.org>, Shubhrajyoti Datta <omaplinuxkernel@gmail.com>, Carlos Chinea <cch.devel@gmail.com>, Paul Walmsley <paul@pwsan.com> |
| Subject: |
| [RFCv3 0/7] OMAP SSI driver |
| Date: |
| Sun, 6 Oct 2013 22:27:08 +0200 |
| Message-ID: |
| <1381091235-18293-1-git-send-email-sre@debian.org> |
| Cc: |
| Kevin Hilman <khilman@deeprootsystems.com>, Tony Lindgren <tony@atomide.com>, Russell King <linux@arm.linux.org.uk>, Grant Likely <grant.likely@linaro.org>, Rob Herring <rob.herring@calxeda.com>, Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>, Stephen Warren <swarren@wwwdotorg.org>, Ian Campbell <ijc+devicetree@hellion.org.uk>, Rob Landley <rob@landley.net>, =?UTF-8?q?=27Beno=C3=AEt=20Cousson=27?= <bcousson@baylibre.com>, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, =?UTF-8?q?=27Pali=20Roh=C3=A1r=27?= <pali.rohar@gmail.com>, =?UTF-8?q?=27=D0=98=D0=B2=D0=B0=D0=B9=D0=BB=D0=BE=20=D0=94=D0=B8=D0=BC=D0=B8=D1=82=D1=80=D0=BE=D0=B2=27?= <freemangordon@abv.bg>, Joni Lapilainen <joni.lapilainen@gmail.com>, Sebastian Reichel <sre@debian.org> |
| Archive‑link: | |
Article |
Hi,
Here is the third round of the OMAP SSI driver patches.
Changes since RFCv2:
* Move DT data from omap34xx.dtsi to omap3.dtsi
Nokia N9 uses an omap3630 and ssi for modem connection, thus SSI
seems to be part of all OMAP3 SoCs.
* Move DT documentation to the driver patch
* Update wording in DT documentation
I just applied Stephen Warrens suggestions
* Removal of omap_pm_get_dev_context_loss_count as demanded by Tony Lindgren
For now there is no context loss support in the driver, since I do not
have enough information about the chip to support this via registers.
* Dropped useless "default n" from KConfig
* Add support for HSI client registration via DT
* Register hsi-char as ssi client for Nokia N900
Currently only hsi-char client is available in the mainline kernel,
but for the Nokia N900 two more clients will be needed: ssi-protocol
and cmt-speech. Those will be added with their own patchset.
* Use ida_simple_get for device id, since DT does not setup pd->id
* Fixed SSI interrupt numbers in omap3.dtsi
I subtracted OMAP_INTC_START before, but the original patch did
not yet have OMAP_INTC_START added.
* Fixed compilation as kernel modules
* Fixed reload of kernel modules
* Added module dependency: omap_ssi_port needs omap_port
TODO:
* Central Message Queue
I did not yet implement a central message queue in the HSI framework.
I will do this after Nokia N900 modem is working in the mainline kernel,
since that makes testing easier.
* Get clock data from DT
This depends on a patchset, which is not yet part of any kernel tree.
Apart from that I don't know which clocks will be needed. That depends
on the implementation of the hwmod DTification (see next point)
* Remove the hwmod DT hack
This depends on some future work merging hwmod data into DT.
Version 2 of the patchset: https://lkml.org/lkml/2013/9/15/98
-- Sebastian
Sebastian Reichel (7):
ARM: OMAP2+: hwmod-data: Add SSI information
HSI: add Device Tree support for HSI clients
HSI: method to unregister clients from an hsi port
HSI: hsi-char: add Device Tree support
HSI: hsi-char: fix driver for multiport scenarios
ARM: OMAP2+: HSI: Introduce OMAP SSI driver
ARM: dts: N900: Add SSI information
Documentation/devicetree/bindings/hsi/omap_ssi.txt | 69 +
.../devicetree/bindings/hsi/trivial-devices.txt | 36 +
arch/arm/boot/dts/omap3-n900.dts | 12 +
arch/arm/boot/dts/omap3.dtsi | 47 +
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 48 +
drivers/hsi/Kconfig | 1 +
drivers/hsi/Makefile | 1 +
drivers/hsi/clients/hsi_char.c | 15 +-
drivers/hsi/controllers/Kconfig | 19 +
drivers/hsi/controllers/Makefile | 6 +
drivers/hsi/controllers/omap_ssi.c | 618 +++++++++
drivers/hsi/controllers/omap_ssi.h | 166 +++
drivers/hsi/controllers/omap_ssi_port.c | 1400 ++++++++++++++++++++
drivers/hsi/controllers/omap_ssi_regs.h | 171 +++
drivers/hsi/hsi.c | 80 +-
include/dt-bindings/hsi/hsi.h | 17 +
include/linux/hsi/hsi.h | 3 +
17 files changed, 2707 insertions(+), 2 deletions(-)
create mode 100644 Documentation/devicetree/bindings/hsi/omap_ssi.txt
create mode 100644 Documentation/devicetree/bindings/hsi/trivial-devices.txt
create mode 100644 drivers/hsi/controllers/Kconfig
create mode 100644 drivers/hsi/controllers/Makefile
create mode 100644 drivers/hsi/controllers/omap_ssi.c
create mode 100644 drivers/hsi/controllers/omap_ssi.h
create mode 100644 drivers/hsi/controllers/omap_ssi_port.c
create mode 100644 drivers/hsi/controllers/omap_ssi_regs.h
create mode 100644 include/dt-bindings/hsi/hsi.h
--
1.8.4.rc3
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