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Date: Tue, 8 Jan 2019 13:26:00 +0800 Message-Id: <20190108052606.59426-1-pihsun@chromium.org> X-Mailer: git-send-email 2.20.1.97.g81188d93c3-goog MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190107_212612_637655_A9D72266 X-CRM114-Status: GOOD ( 13.20 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Matthias Brugger , Nicolas Boichat , "moderated list:ARM/Mediatek SoC support" , "moderated list:ARM/Mediatek SoC support" , Pi-Hsun Shih Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support for controlling and communicating with mt8183's system control processor (SCP), using the remoteproc & rpmsg framework. And also add a cros_ec driver for CrOS EC host command over rpmsg. The overall structure of the series is: * remoteproc/mtk_scp.c: Control the start / stop of SCP (Patch 2). * remoteproc/mtk_scp_ipi.c: Communicates to SCP using inter-processor interrupt (IPI) and shared memory (Patch 2, 3). * rpmsg/mtk_rpmsg.c: Wrapper to wrap the IPI communication into a rpmsg device. Supports name service for SCP firmware to announce channels (Patch 4). * platform/chrome/cros_ec_rpmsg.c: Communicates with the SCP over the rpmsg framework (like what platform/chrome/cros_ec_{i2c,spi}.c does) (Patch 5). Since I'm not familiar with the remoteproc / rpmsg framework, and there are not much other custom rpmsg driver for reference, would like some review / comments on the overall structure of the driver. Changes from v1: - Extract functions and rename variables in mtk_scp.c. - Do cleanup properly in mtk_rpmsg.c, which also removes the problem of short-lived work items. - Code format fix based on feedback for cros_ec_rpmsg.c. - Extract feature detection for SCP into separate patch (Patch 6). Erin Lo (2): dt-bindings: Add a binding for Mediatek SCP remoteproc/mediatek: add SCP support for mt8183 Pi-Hsun Shih (4): remoteproc: move IPI interface into separate file. rpmsg: add rpmsg support for mt8183 SCP. mfd: add EC host command support using rpmsg. cros_ec: differentiate SCP from EC by feature bit. .../bindings/remoteproc/mtk,scp.txt | 10 + drivers/mfd/cros_ec_dev.c | 9 + drivers/platform/chrome/Kconfig | 8 + drivers/platform/chrome/Makefile | 1 + drivers/platform/chrome/cros_ec_rpmsg.c | 159 ++++++ drivers/remoteproc/Kconfig | 9 + drivers/remoteproc/Makefile | 1 + drivers/remoteproc/mtk_common.h | 76 +++ drivers/remoteproc/mtk_scp.c | 459 ++++++++++++++++++ drivers/remoteproc/mtk_scp_ipi.c | 108 +++++ drivers/rpmsg/Kconfig | 5 + drivers/rpmsg/Makefile | 1 + drivers/rpmsg/mtk_rpmsg.c | 384 +++++++++++++++ include/linux/mfd/cros_ec.h | 1 + include/linux/mfd/cros_ec_commands.h | 2 + include/linux/platform_data/mtk_scp.h | 132 +++++ include/linux/rpmsg/mtk_rpmsg.h | 34 ++ 17 files changed, 1399 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/mtk,scp.txt create mode 100644 drivers/platform/chrome/cros_ec_rpmsg.c create mode 100644 drivers/remoteproc/mtk_common.h create mode 100644 drivers/remoteproc/mtk_scp.c create mode 100644 drivers/remoteproc/mtk_scp_ipi.c create mode 100644 drivers/rpmsg/mtk_rpmsg.c create mode 100644 include/linux/platform_data/mtk_scp.h create mode 100644 include/linux/rpmsg/mtk_rpmsg.h -- 2.20.1.97.g81188d93c3-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel