[U-Boot] [PATCH 076/126] x86: Add a uclass for ITSS
bmeng.cn at gmail.com
Thu Oct 10 02:27:29 UTC 2019
On Wed, Sep 25, 2019 at 10:59 PM Simon Glass <sjg at chromium.org> wrote:
> This models some sort of interrupt thingy but there are so many
> abreviations that I cannot find out what it stands for. It is something
> to do with interrupts.
After I read the ApolloLake datasheet, the ITSS contains the following parts:
- A register block that is compatible with current "intel,irq-router"
driver in U-Boot, plus two more
- Legacy 8254
- Legacy 8259
- Legacy I/O ports like NMI and reset control (0xcf9)
So it seems to me that the best option for us is to extend current
"intel,irq-router" driver to support new capabilities, instead of
creating a new "ITSS" uclass driver, which we both don't know that
ITSS stands for ...
> It supports two operations.
> Signed-off-by: Simon Glass <sjg at chromium.org>
> drivers/misc/Kconfig | 9 ++++++
> drivers/misc/Makefile | 1 +
> drivers/misc/itss-uclass.c | 34 +++++++++++++++++++++++
> include/dm/uclass-id.h | 1 +
> include/itss.h | 56 ++++++++++++++++++++++++++++++++++++++
> 5 files changed, 101 insertions(+)
> create mode 100644 drivers/misc/itss-uclass.c
> create mode 100644 include/itss.h
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