From: Josh Cartwright <joshc@codeaurora.org> To: Grant Likely <grant.likely@linaro.org>, Rob Herring <rob.herring@calxeda.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, Sagar Dharia <sdharia@codeaurora.org>, Gilad Avidov <gavidov@codeaurora.org>, Michael Bohan <mbohan@codeaurora.org> Subject: [PATCH RFC v2 0/3] Add support for the System Power Management Interface (SPMI) Date: Thu, 22 Aug 2013 15:18:50 -0500 [thread overview] Message-ID: <cover.1377202730.git.joshc@codeaurora.org> (raw) The System Power Management Interface (SPMI) is a high-speed, low-latency, bi-directional, two-wire serial bus suitable for real-time control of voltage and frequency scaled multi-core application processors and its power management of auxiliary components. SPMI obsoletes a number of legacy, custom point-to-point interfaces and provides a low pin count, high-speed control bus for up to 4 Master and 16 Slave devices. SPMI is specified by the MIPI (Mobile Industry Process Interface) Alliance [1]. Introduced in this patchset are the core SPMI bus components, as well an implementation of an SPMI controller, the "PMIC arbiter", which is used on the Qualcomm Snapdragon 800 series of SoCs to communicate with off-chip Power Management ICs (PMICs). Notably missing from this patchset is an implementation of an SPMI device/slave driver, which is still forthcoming. With this patchset in it's current state, it is possible to perform register accesses to a slave via debugfs. Changes from v1[2]: - Adopted patch (1/5) to #define for_each_available_node() shim in the !CONFIG_OF case - Moved device tree logic out of drivers/of and into spmi.c core (this mirrors what SPI is doing, and what i2c will soon be doing) - Move of_spmi_add_devices() call into spmi_device_add(), so drivers don't have to call it explicitly - Unconditionally build in debugfs code (rely on the underlying CONFIG_DEBUG_FS switch to throw unused code away) - Change pr_* print functions to their dev_* equivalents - Fix copy_{to,from}_user error handling - Renamed "board_lock" to "ctrl_idr_lock" to better describe it's purpose - Rework device object lifetime management - Rename PMIC arb binding document, add description of PMIC arb - Add generic SPMI device tree bindings [1]: http://www.mipi.org/specifications/system-power-management-interface [2]: http://thread.gmane.org/gmane.linux.ports.arm.msm/4886 Josh Cartwright (2): spmi: add generic SPMI controller binding documentation spmi: document the PMIC arbiter SPMI bindings Kenneth Heitke (2): spmi: Linux driver framework for SPMI spmi: Add MSM PMIC Arbiter SPMI controller Sylwester Nawrocki (1): of: Add empty for_each_available_child_of_node() macro definition .../bindings/spmi/qcom,spmi-pmic-arb.txt | 36 ++ Documentation/devicetree/bindings/spmi/spmi.txt | 36 ++ drivers/Kconfig | 2 + drivers/Makefile | 1 + drivers/spmi/Kconfig | 24 + drivers/spmi/Makefile | 6 + drivers/spmi/spmi-dbgfs.c | 580 +++++++++++++++++++++ drivers/spmi/spmi-dbgfs.h | 25 + drivers/spmi/spmi-pmic-arb.c | 416 +++++++++++++++ drivers/spmi/spmi.c | 491 +++++++++++++++++ include/linux/mod_devicetable.h | 8 + include/linux/of.h | 3 + include/linux/spmi.h | 355 +++++++++++++ 13 files changed, 1983 insertions(+) create mode 100644 Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt create mode 100644 Documentation/devicetree/bindings/spmi/spmi.txt create mode 100644 drivers/spmi/Kconfig create mode 100644 drivers/spmi/Makefile create mode 100644 drivers/spmi/spmi-dbgfs.c create mode 100644 drivers/spmi/spmi-dbgfs.h create mode 100644 drivers/spmi/spmi-pmic-arb.c create mode 100644 drivers/spmi/spmi.c create mode 100644 include/linux/spmi.h -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
WARNING: multiple messages have this Message-ID (diff)
From: joshc@codeaurora.org (Josh Cartwright) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH RFC v2 0/3] Add support for the System Power Management Interface (SPMI) Date: Thu, 22 Aug 2013 15:18:50 -0500 [thread overview] Message-ID: <cover.1377202730.git.joshc@codeaurora.org> (raw) The System Power Management Interface (SPMI) is a high-speed, low-latency, bi-directional, two-wire serial bus suitable for real-time control of voltage and frequency scaled multi-core application processors and its power management of auxiliary components. SPMI obsoletes a number of legacy, custom point-to-point interfaces and provides a low pin count, high-speed control bus for up to 4 Master and 16 Slave devices. SPMI is specified by the MIPI (Mobile Industry Process Interface) Alliance [1]. Introduced in this patchset are the core SPMI bus components, as well an implementation of an SPMI controller, the "PMIC arbiter", which is used on the Qualcomm Snapdragon 800 series of SoCs to communicate with off-chip Power Management ICs (PMICs). Notably missing from this patchset is an implementation of an SPMI device/slave driver, which is still forthcoming. With this patchset in it's current state, it is possible to perform register accesses to a slave via debugfs. Changes from v1[2]: - Adopted patch (1/5) to #define for_each_available_node() shim in the !CONFIG_OF case - Moved device tree logic out of drivers/of and into spmi.c core (this mirrors what SPI is doing, and what i2c will soon be doing) - Move of_spmi_add_devices() call into spmi_device_add(), so drivers don't have to call it explicitly - Unconditionally build in debugfs code (rely on the underlying CONFIG_DEBUG_FS switch to throw unused code away) - Change pr_* print functions to their dev_* equivalents - Fix copy_{to,from}_user error handling - Renamed "board_lock" to "ctrl_idr_lock" to better describe it's purpose - Rework device object lifetime management - Rename PMIC arb binding document, add description of PMIC arb - Add generic SPMI device tree bindings [1]: http://www.mipi.org/specifications/system-power-management-interface [2]: http://thread.gmane.org/gmane.linux.ports.arm.msm/4886 Josh Cartwright (2): spmi: add generic SPMI controller binding documentation spmi: document the PMIC arbiter SPMI bindings Kenneth Heitke (2): spmi: Linux driver framework for SPMI spmi: Add MSM PMIC Arbiter SPMI controller Sylwester Nawrocki (1): of: Add empty for_each_available_child_of_node() macro definition .../bindings/spmi/qcom,spmi-pmic-arb.txt | 36 ++ Documentation/devicetree/bindings/spmi/spmi.txt | 36 ++ drivers/Kconfig | 2 + drivers/Makefile | 1 + drivers/spmi/Kconfig | 24 + drivers/spmi/Makefile | 6 + drivers/spmi/spmi-dbgfs.c | 580 +++++++++++++++++++++ drivers/spmi/spmi-dbgfs.h | 25 + drivers/spmi/spmi-pmic-arb.c | 416 +++++++++++++++ drivers/spmi/spmi.c | 491 +++++++++++++++++ include/linux/mod_devicetable.h | 8 + include/linux/of.h | 3 + include/linux/spmi.h | 355 +++++++++++++ 13 files changed, 1983 insertions(+) create mode 100644 Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt create mode 100644 Documentation/devicetree/bindings/spmi/spmi.txt create mode 100644 drivers/spmi/Kconfig create mode 100644 drivers/spmi/Makefile create mode 100644 drivers/spmi/spmi-dbgfs.c create mode 100644 drivers/spmi/spmi-dbgfs.h create mode 100644 drivers/spmi/spmi-pmic-arb.c create mode 100644 drivers/spmi/spmi.c create mode 100644 include/linux/spmi.h -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
next reply other threads:[~2013-08-22 20:18 UTC|newest] Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-08-22 20:18 Josh Cartwright [this message] 2013-08-22 20:18 ` [PATCH RFC v2 0/3] Add support for the System Power Management Interface (SPMI) Josh Cartwright 2012-12-10 19:41 ` [PATCH RFC v2 1/5] of: Add empty for_each_available_child_of_node() macro definition Josh Cartwright 2013-08-22 22:57 ` Josh Cartwright 2013-08-09 20:37 ` [PATCH RFC v2 4/5] spmi: Add MSM PMIC Arbiter SPMI controller Josh Cartwright 2013-08-09 20:37 ` Josh Cartwright 2013-08-09 20:37 ` [PATCH RFC v2 5/5] spmi: document the PMIC arbiter SPMI bindings Josh Cartwright 2013-08-09 20:37 ` Josh Cartwright 2013-08-23 21:55 ` Stephen Warren 2013-08-23 21:55 ` Stephen Warren 2013-08-09 20:37 ` [PATCH RFC v2 2/5] spmi: Linux driver framework for SPMI Josh Cartwright 2013-08-09 20:37 ` Josh Cartwright 2013-08-22 23:10 ` Greg Kroah-Hartman 2013-08-22 23:10 ` Greg Kroah-Hartman 2013-08-23 16:06 ` Josh Cartwright 2013-08-23 16:06 ` Josh Cartwright 2013-09-09 15:52 ` Mark Brown 2013-09-09 15:52 ` Mark Brown 2013-09-09 16:56 ` Josh Cartwright 2013-09-09 16:56 ` Josh Cartwright 2013-08-22 19:59 ` [PATCH RFC v2 3/5] spmi: add generic SPMI controller binding documentation Josh Cartwright 2013-08-22 19:59 ` Josh Cartwright 2013-08-23 21:58 ` Stephen Warren 2013-08-23 21:58 ` Stephen Warren 2013-08-27 17:01 ` Josh Cartwright 2013-08-27 17:01 ` Josh Cartwright 2013-08-27 21:55 ` Stephen Warren 2013-08-27 21:55 ` Stephen Warren 2013-08-28 18:00 ` Josh Cartwright 2013-08-28 18:00 ` Josh Cartwright 2013-08-28 18:32 ` Stephen Warren 2013-08-28 18:32 ` Stephen Warren 2013-10-06 6:11 ` Bjorn Andersson 2013-10-06 6:11 ` Bjorn Andersson [not found] ` <CAJAp7Oi-bPytsLtsppdanOi_p0Y5vfBriGB-B5by7w5Z7SGU-Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2013-10-07 21:17 ` Josh Cartwright 2013-10-07 21:17 ` Josh Cartwright 2013-10-07 21:17 ` Josh Cartwright
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