diff options
Diffstat (limited to 'target/linux/ipq806x/patches/0055-spmi-Linux-driver-framework-for-SPMI.patch')
| -rw-r--r-- | target/linux/ipq806x/patches/0055-spmi-Linux-driver-framework-for-SPMI.patch | 919 |
1 files changed, 0 insertions, 919 deletions
diff --git a/target/linux/ipq806x/patches/0055-spmi-Linux-driver-framework-for-SPMI.patch b/target/linux/ipq806x/patches/0055-spmi-Linux-driver-framework-for-SPMI.patch deleted file mode 100644 index 80d3b6c05c..0000000000 --- a/target/linux/ipq806x/patches/0055-spmi-Linux-driver-framework-for-SPMI.patch +++ /dev/null @@ -1,919 +0,0 @@ -From 1b0018dfd6295cbcc87738601b84bf49f3004419 Mon Sep 17 00:00:00 2001 -From: Kenneth Heitke <kheitke@codeaurora.org> -Date: Wed, 12 Feb 2014 13:44:22 -0600 -Subject: [PATCH 055/182] spmi: Linux driver framework for SPMI - -System Power Management Interface (SPMI) is a specification -developed by the MIPI (Mobile Industry Process Interface) Alliance -optimized for the real time control of Power Management ICs (PMIC). - -SPMI is a two-wire serial interface that supports up to 4 master -devices and up to 16 logical slaves. - -The framework supports message APIs, multiple busses (1 controller -per bus) and multiple clients/slave devices per controller. - -Signed-off-by: Kenneth Heitke <kheitke@codeaurora.org> -Signed-off-by: Michael Bohan <mbohan@codeaurora.org> -Signed-off-by: Josh Cartwright <joshc@codeaurora.org> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - drivers/Kconfig | 2 + - drivers/Makefile | 1 + - drivers/spmi/Kconfig | 9 + - drivers/spmi/Makefile | 4 + - drivers/spmi/spmi.c | 609 +++++++++++++++++++++++++++++++++++++++ - include/dt-bindings/spmi/spmi.h | 18 ++ - include/linux/mod_devicetable.h | 8 + - include/linux/spmi.h | 191 ++++++++++++ - 8 files changed, 842 insertions(+) - create mode 100644 drivers/spmi/Kconfig - create mode 100644 drivers/spmi/Makefile - create mode 100644 drivers/spmi/spmi.c - create mode 100644 include/dt-bindings/spmi/spmi.h - create mode 100644 include/linux/spmi.h - ---- a/drivers/Kconfig -+++ b/drivers/Kconfig -@@ -52,6 +52,8 @@ source "drivers/i2c/Kconfig" - - source "drivers/spi/Kconfig" - -+source "drivers/spmi/Kconfig" -+ - source "drivers/hsi/Kconfig" - - source "drivers/pps/Kconfig" ---- a/drivers/Makefile -+++ b/drivers/Makefile -@@ -66,6 +66,7 @@ obj-$(CONFIG_ATA) += ata/ - obj-$(CONFIG_TARGET_CORE) += target/ - obj-$(CONFIG_MTD) += mtd/ - obj-$(CONFIG_SPI) += spi/ -+obj-$(CONFIG_SPMI) += spmi/ - obj-y += hsi/ - obj-y += net/ - obj-$(CONFIG_ATM) += atm/ ---- /dev/null -+++ b/drivers/spmi/Kconfig -@@ -0,0 +1,9 @@ -+# -+# SPMI driver configuration -+# -+menuconfig SPMI -+ tristate "SPMI support" -+ help -+ SPMI (System Power Management Interface) is a two-wire -+ serial interface between baseband and application processors -+ and Power Management Integrated Circuits (PMIC). ---- /dev/null -+++ b/drivers/spmi/Makefile -@@ -0,0 +1,4 @@ -+# -+# Makefile for kernel SPMI framework. -+# -+obj-$(CONFIG_SPMI) += spmi.o ---- /dev/null -+++ b/drivers/spmi/spmi.c -@@ -0,0 +1,609 @@ -+/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 and -+ * only version 2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ */ -+#include <linux/kernel.h> -+#include <linux/errno.h> -+#include <linux/idr.h> -+#include <linux/slab.h> -+#include <linux/module.h> -+#include <linux/of.h> -+#include <linux/of_device.h> -+#include <linux/platform_device.h> -+#include <linux/spmi.h> -+#include <linux/module.h> -+#include <linux/pm_runtime.h> -+ -+#include <dt-bindings/spmi/spmi.h> -+ -+static DEFINE_IDA(ctrl_ida); -+ -+static void spmi_dev_release(struct device *dev) -+{ -+ struct spmi_device *sdev = to_spmi_device(dev); -+ kfree(sdev); -+} -+ -+static const struct device_type spmi_dev_type = { -+ .release = spmi_dev_release, -+}; -+ -+static void spmi_ctrl_release(struct device *dev) -+{ -+ struct spmi_controller *ctrl = to_spmi_controller(dev); -+ ida_simple_remove(&ctrl_ida, ctrl->nr); -+ kfree(ctrl); -+} -+ -+static const struct device_type spmi_ctrl_type = { -+ .release = spmi_ctrl_release, -+}; -+ -+#ifdef CONFIG_PM_RUNTIME -+static int spmi_runtime_suspend(struct device *dev) -+{ -+ struct spmi_device *sdev = to_spmi_device(dev); -+ int err; -+ -+ err = pm_generic_runtime_suspend(dev); -+ if (err) -+ return err; -+ -+ return spmi_command_sleep(sdev); -+} -+ -+static int spmi_runtime_resume(struct device *dev) -+{ -+ struct spmi_device *sdev = to_spmi_device(dev); -+ int err; -+ -+ err = spmi_command_wakeup(sdev); -+ if (err) -+ return err; -+ -+ return pm_generic_runtime_resume(dev); -+} -+#endif -+ -+static const struct dev_pm_ops spmi_pm_ops = { -+ SET_RUNTIME_PM_OPS( -+ spmi_runtime_suspend, -+ spmi_runtime_resume, -+ NULL -+ ) -+}; -+ -+static int spmi_device_match(struct device *dev, struct device_driver *drv) -+{ -+ if (of_driver_match_device(dev, drv)) -+ return 1; -+ -+ if (drv->name) -+ return strncmp(dev_name(dev), drv->name, -+ SPMI_NAME_SIZE) == 0; -+ -+ return 0; -+} -+ -+/** -+ * spmi_device_add() - add a device previously constructed via spmi_device_alloc() -+ * @sdev: spmi_device to be added -+ */ -+int spmi_device_add(struct spmi_device *sdev) -+{ -+ struct spmi_controller *ctrl = sdev->ctrl; -+ int err; -+ -+ dev_set_name(&sdev->dev, "%d-%02x", ctrl->nr, sdev->usid); -+ -+ err = device_add(&sdev->dev); -+ if (err < 0) { -+ dev_err(&sdev->dev, "Can't add %s, status %d\n", -+ dev_name(&sdev->dev), err); -+ goto err_device_add; -+ } -+ -+ dev_dbg(&sdev->dev, "device %s registered\n", dev_name(&sdev->dev)); -+ -+err_device_add: -+ return err; -+} -+EXPORT_SYMBOL_GPL(spmi_device_add); -+ -+/** -+ * spmi_device_remove(): remove an SPMI device -+ * @sdev: spmi_device to be removed -+ */ -+void spmi_device_remove(struct spmi_device *sdev) -+{ -+ device_unregister(&sdev->dev); -+} -+EXPORT_SYMBOL_GPL(spmi_device_remove); -+ -+static inline int -+spmi_cmd(struct spmi_controller *ctrl, u8 opcode, u8 sid) -+{ -+ if (!ctrl || !ctrl->cmd || ctrl->dev.type != &spmi_ctrl_type) -+ return -EINVAL; -+ -+ return ctrl->cmd(ctrl, opcode, sid); -+} -+ -+static inline int spmi_read_cmd(struct spmi_controller *ctrl, u8 opcode, -+ u8 sid, u16 addr, u8 *buf, size_t len) -+{ -+ if (!ctrl || !ctrl->read_cmd || ctrl->dev.type != &spmi_ctrl_type) -+ return -EINVAL; -+ -+ return ctrl->read_cmd(ctrl, opcode, sid, addr, buf, len); -+} -+ -+static inline int spmi_write_cmd(struct spmi_controller *ctrl, u8 opcode, -+ u8 sid, u16 addr, const u8 *buf, size_t len) -+{ -+ if (!ctrl || !ctrl->write_cmd || ctrl->dev.type != &spmi_ctrl_type) -+ return -EINVAL; -+ -+ return ctrl->write_cmd(ctrl, opcode, sid, addr, buf, len); -+} -+ -+/** -+ * spmi_register_read() - register read -+ * @sdev: SPMI device. -+ * @addr: slave register address (5-bit address). -+ * @buf: buffer to be populated with data from the Slave. -+ * -+ * Reads 1 byte of data from a Slave device register. -+ */ -+int spmi_register_read(struct spmi_device *sdev, u8 addr, u8 *buf) -+{ -+ /* 5-bit register address */ -+ if (addr > 0x1F) -+ return -EINVAL; -+ -+ return spmi_read_cmd(sdev->ctrl, SPMI_CMD_READ, sdev->usid, addr, -+ buf, 1); -+} -+EXPORT_SYMBOL_GPL(spmi_register_read); -+ -+/** -+ * spmi_ext_register_read() - extended register read -+ * @sdev: SPMI device. -+ * @addr: slave register address (8-bit address). -+ * @buf: buffer to be populated with data from the Slave. -+ * @len: the request number of bytes to read (up to 16 bytes). -+ * -+ * Reads up to 16 bytes of data from the extended register space on a -+ * Slave device. -+ */ -+int spmi_ext_register_read(struct spmi_device *sdev, u8 addr, u8 *buf, -+ size_t len) -+{ -+ /* 8-bit register address, up to 16 bytes */ -+ if (len == 0 || len > 16) -+ return -EINVAL; -+ -+ return spmi_read_cmd(sdev->ctrl, SPMI_CMD_EXT_READ, sdev->usid, addr, -+ buf, len); -+} -+EXPORT_SYMBOL_GPL(spmi_ext_register_read); -+ -+/** -+ * spmi_ext_register_readl() - extended register read long -+ * @sdev: SPMI device. -+ * @addr: slave register address (16-bit address). -+ * @buf: buffer to be populated with data from the Slave. -+ * @len: the request number of bytes to read (up to 8 bytes). -+ * -+ * Reads up to 8 bytes of data from the extended register space on a -+ * Slave device using 16-bit address. -+ */ -+int spmi_ext_register_readl(struct spmi_device *sdev, u16 addr, u8 *buf, -+ size_t len) -+{ -+ /* 16-bit register address, up to 8 bytes */ -+ if (len == 0 || len > 8) -+ return -EINVAL; -+ -+ return spmi_read_cmd(sdev->ctrl, SPMI_CMD_EXT_READL, sdev->usid, addr, -+ buf, len); -+} -+EXPORT_SYMBOL_GPL(spmi_ext_register_readl); -+ -+/** -+ * spmi_register_write() - register write -+ * @sdev: SPMI device -+ * @addr: slave register address (5-bit address). -+ * @data: buffer containing the data to be transferred to the Slave. -+ * -+ * Writes 1 byte of data to a Slave device register. -+ */ -+int spmi_register_write(struct spmi_device *sdev, u8 addr, u8 data) -+{ -+ /* 5-bit register address */ -+ if (addr > 0x1F) -+ return -EINVAL; -+ -+ return spmi_write_cmd(sdev->ctrl, SPMI_CMD_WRITE, sdev->usid, addr, -+ &data, 1); -+} -+EXPORT_SYMBOL_GPL(spmi_register_write); -+ -+/** -+ * spmi_register_zero_write() - register zero write -+ * @sdev: SPMI device. -+ * @data: the data to be written to register 0 (7-bits). -+ * -+ * Writes data to register 0 of the Slave device. -+ */ -+int spmi_register_zero_write(struct spmi_device *sdev, u8 data) -+{ -+ return spmi_write_cmd(sdev->ctrl, SPMI_CMD_ZERO_WRITE, sdev->usid, 0, -+ &data, 1); -+} -+EXPORT_SYMBOL_GPL(spmi_register_zero_write); -+ -+/** -+ * spmi_ext_register_write() - extended register write -+ * @sdev: SPMI device. -+ * @addr: slave register address (8-bit address). -+ * @buf: buffer containing the data to be transferred to the Slave. -+ * @len: the request number of bytes to read (up to 16 bytes). -+ * -+ * Writes up to 16 bytes of data to the extended register space of a -+ * Slave device. -+ */ -+int spmi_ext_register_write(struct spmi_device *sdev, u8 addr, const u8 *buf, -+ size_t len) -+{ -+ /* 8-bit register address, up to 16 bytes */ -+ if (len == 0 || len > 16) -+ return -EINVAL; -+ -+ return spmi_write_cmd(sdev->ctrl, SPMI_CMD_EXT_WRITE, sdev->usid, addr, -+ buf, len); -+} -+EXPORT_SYMBOL_GPL(spmi_ext_register_write); -+ -+/** -+ * spmi_ext_register_writel() - extended register write long -+ * @sdev: SPMI device. -+ * @addr: slave register address (16-bit address). -+ * @buf: buffer containing the data to be transferred to the Slave. -+ * @len: the request number of bytes to read (up to 8 bytes). -+ * -+ * Writes up to 8 bytes of data to the extended register space of a -+ * Slave device using 16-bit address. -+ */ -+int spmi_ext_register_writel(struct spmi_device *sdev, u16 addr, const u8 *buf, -+ size_t len) -+{ -+ /* 4-bit Slave Identifier, 16-bit register address, up to 8 bytes */ -+ if (len == 0 || len > 8) -+ return -EINVAL; -+ -+ return spmi_write_cmd(sdev->ctrl, SPMI_CMD_EXT_WRITEL, sdev->usid, -+ addr, buf, len); -+} -+EXPORT_SYMBOL_GPL(spmi_ext_register_writel); -+ -+/** -+ * spmi_command_reset() - sends RESET command to the specified slave -+ * @sdev: SPMI device. -+ * -+ * The Reset command initializes the Slave and forces all registers to -+ * their reset values. The Slave shall enter the STARTUP state after -+ * receiving a Reset command. -+ */ -+int spmi_command_reset(struct spmi_device *sdev) -+{ -+ return spmi_cmd(sdev->ctrl, SPMI_CMD_RESET, sdev->usid); -+} -+EXPORT_SYMBOL_GPL(spmi_command_reset); -+ -+/** -+ * spmi_command_sleep() - sends SLEEP command to the specified SPMI device -+ * @sdev: SPMI device. -+ * -+ * The Sleep command causes the Slave to enter the user defined SLEEP state. -+ */ -+int spmi_command_sleep(struct spmi_device *sdev) -+{ -+ return spmi_cmd(sdev->ctrl, SPMI_CMD_SLEEP, sdev->usid); -+} -+EXPORT_SYMBOL_GPL(spmi_command_sleep); -+ -+/** -+ * spmi_command_wakeup() - sends WAKEUP command to the specified SPMI device -+ * @sdev: SPMI device. -+ * -+ * The Wakeup command causes the Slave to move from the SLEEP state to -+ * the ACTIVE state. -+ */ -+int spmi_command_wakeup(struct spmi_device *sdev) -+{ -+ return spmi_cmd(sdev->ctrl, SPMI_CMD_WAKEUP, sdev->usid); -+} -+EXPORT_SYMBOL_GPL(spmi_command_wakeup); -+ -+/** -+ * spmi_command_shutdown() - sends SHUTDOWN command to the specified SPMI device -+ * @sdev: SPMI device. -+ * -+ * The Shutdown command causes the Slave to enter the SHUTDOWN state. -+ */ -+int spmi_command_shutdown(struct spmi_device *sdev) -+{ -+ return spmi_cmd(sdev->ctrl, SPMI_CMD_SHUTDOWN, sdev->usid); -+} -+EXPORT_SYMBOL_GPL(spmi_command_shutdown); -+ -+static int spmi_drv_probe(struct device *dev) -+{ -+ const struct spmi_driver *sdrv = to_spmi_driver(dev->driver); -+ struct spmi_device *sdev = to_spmi_device(dev); -+ int err; -+ -+ /* Ensure the slave is in ACTIVE state */ -+ err = spmi_command_wakeup(sdev); -+ if (err) -+ goto fail_wakeup; -+ -+ pm_runtime_get_noresume(dev); -+ pm_runtime_set_active(dev); -+ pm_runtime_enable(dev); -+ -+ err = sdrv->probe(sdev); -+ if (err) -+ goto fail_probe; -+ -+ return 0; -+ -+fail_probe: -+ pm_runtime_disable(dev); -+ pm_runtime_set_suspended(dev); -+ pm_runtime_put_noidle(dev); -+fail_wakeup: -+ return err; -+} -+ -+static int spmi_drv_remove(struct device *dev) -+{ -+ const struct spmi_driver *sdrv = to_spmi_driver(dev->driver); -+ -+ pm_runtime_get_sync(dev); -+ sdrv->remove(to_spmi_device(dev)); -+ pm_runtime_put_noidle(dev); -+ -+ pm_runtime_disable(dev); -+ pm_runtime_set_suspended(dev); -+ pm_runtime_put_noidle(dev); -+ return 0; -+} -+ -+static struct bus_type spmi_bus_type = { -+ .name = "spmi", -+ .match = spmi_device_match, -+ .pm = &spmi_pm_ops, -+ .probe = spmi_drv_probe, -+ .remove = spmi_drv_remove, -+}; -+ -+/** -+ * spmi_controller_alloc() - Allocate a new SPMI device -+ * @ctrl: associated controller -+ * -+ * Caller is responsible for either calling spmi_device_add() to add the -+ * newly allocated controller, or calling spmi_device_put() to discard it. -+ */ -+struct spmi_device *spmi_device_alloc(struct spmi_controller *ctrl) -+{ -+ struct spmi_device *sdev; -+ -+ sdev = kzalloc(sizeof(*sdev), GFP_KERNEL); -+ if (!sdev) -+ return NULL; -+ -+ sdev->ctrl = ctrl; -+ device_initialize(&sdev->dev); -+ sdev->dev.parent = &ctrl->dev; -+ sdev->dev.bus = &spmi_bus_type; -+ sdev->dev.type = &spmi_dev_type; -+ return sdev; -+} -+EXPORT_SYMBOL_GPL(spmi_device_alloc); -+ -+/** -+ * spmi_controller_alloc() - Allocate a new SPMI controller -+ * @parent: parent device -+ * @size: size of private data -+ * -+ * Caller is responsible for either calling spmi_controller_add() to add the -+ * newly allocated controller, or calling spmi_controller_put() to discard it. -+ * The allocated private data region may be accessed via -+ * spmi_controller_get_drvdata() -+ */ -+struct spmi_controller *spmi_controller_alloc(struct device *parent, -+ size_t size) -+{ -+ struct spmi_controller *ctrl; -+ int id; -+ -+ if (WARN_ON(!parent)) -+ return NULL; -+ -+ ctrl = kzalloc(sizeof(*ctrl) + size, GFP_KERNEL); -+ if (!ctrl) -+ return NULL; -+ -+ device_initialize(&ctrl->dev); -+ ctrl->dev.type = &spmi_ctrl_type; -+ ctrl->dev.bus = &spmi_bus_type; -+ ctrl->dev.parent = parent; -+ ctrl->dev.of_node = parent->of_node; -+ spmi_controller_set_drvdata(ctrl, &ctrl[1]); -+ -+ id = ida_simple_get(&ctrl_ida, 0, 0, GFP_KERNEL); -+ if (id < 0) { -+ dev_err(parent, -+ "unable to allocate SPMI controller identifier.\n"); -+ spmi_controller_put(ctrl); -+ return NULL; -+ } -+ -+ ctrl->nr = id; -+ dev_set_name(&ctrl->dev, "spmi-%d", id); -+ -+ dev_dbg(&ctrl->dev, "allocated controller 0x%p id %d\n", ctrl, id); -+ return ctrl; -+} -+EXPORT_SYMBOL_GPL(spmi_controller_alloc); -+ -+static void of_spmi_register_devices(struct spmi_controller *ctrl) -+{ -+ struct device_node *node; -+ int err; -+ -+ if (!ctrl->dev.of_node) -+ return; -+ -+ for_each_available_child_of_node(ctrl->dev.of_node, node) { -+ struct spmi_device *sdev; -+ u32 reg[2]; -+ -+ dev_dbg(&ctrl->dev, "adding child %s\n", node->full_name); -+ -+ err = of_property_read_u32_array(node, "reg", reg, 2); -+ if (err) { -+ dev_err(&ctrl->dev, -+ "node %s err (%d) does not have 'reg' property\n", -+ node->full_name, err); -+ continue; -+ } -+ -+ if (reg[1] != SPMI_USID) { -+ dev_err(&ctrl->dev, -+ "node %s contains unsupported 'reg' entry\n", -+ node->full_name); -+ continue; -+ } -+ -+ if (reg[0] >= SPMI_MAX_SLAVE_ID) { -+ dev_err(&ctrl->dev, -+ "invalid usid on node %s\n", -+ node->full_name); -+ continue; -+ } -+ -+ dev_dbg(&ctrl->dev, "read usid %02x\n", reg[0]); -+ -+ sdev = spmi_device_alloc(ctrl); -+ if (!sdev) -+ continue; -+ -+ sdev->dev.of_node = node; -+ sdev->usid = (u8) reg[0]; -+ -+ err = spmi_device_add(sdev); -+ if (err) { -+ dev_err(&sdev->dev, -+ "failure adding device. status %d\n", err); -+ spmi_device_put(sdev); -+ } -+ } -+} -+ -+/** -+ * spmi_controller_add() - Add an SPMI controller -+ * @ctrl: controller to be registered. -+ * -+ * Register a controller previously allocated via spmi_controller_alloc() with -+ * the SPMI core. -+ */ -+int spmi_controller_add(struct spmi_controller *ctrl) -+{ -+ int ret; -+ -+ /* Can't register until after driver model init */ -+ if (WARN_ON(!spmi_bus_type.p)) -+ return -EAGAIN; -+ -+ ret = device_add(&ctrl->dev); -+ if (ret) -+ return ret; -+ -+ if (IS_ENABLED(CONFIG_OF)) -+ of_spmi_register_devices(ctrl); -+ -+ dev_dbg(&ctrl->dev, "spmi-%d registered: dev:%p\n", -+ ctrl->nr, &ctrl->dev); -+ -+ return 0; -+}; -+EXPORT_SYMBOL_GPL(spmi_controller_add); -+ -+/* Remove a device associated with a controller */ -+static int spmi_ctrl_remove_device(struct device *dev, void *data) -+{ -+ struct spmi_device *spmidev = to_spmi_device(dev); -+ if (dev->type == &spmi_dev_type) -+ spmi_device_remove(spmidev); -+ return 0; -+} -+ -+/** -+ * spmi_controller_remove(): remove an SPMI controller -+ * @ctrl: controller to remove -+ * -+ * Remove a SPMI controller. Caller is responsible for calling -+ * spmi_controller_put() to discard the allocated controller. -+ */ -+void spmi_controller_remove(struct spmi_controller *ctrl) -+{ -+ int dummy; -+ -+ if (!ctrl) -+ return; -+ -+ dummy = device_for_each_child(&ctrl->dev, NULL, -+ spmi_ctrl_remove_device); -+ device_del(&ctrl->dev); -+} -+EXPORT_SYMBOL_GPL(spmi_controller_remove); -+ -+/** -+ * spmi_driver_register() - Register client driver with SPMI core -+ * @sdrv: client driver to be associated with client-device. -+ * -+ * This API will register the client driver with the SPMI framework. -+ * It is typically called from the driver's module-init function. -+ */ -+int spmi_driver_register(struct spmi_driver *sdrv) -+{ -+ sdrv->driver.bus = &spmi_bus_type; -+ return driver_register(&sdrv->driver); -+} -+EXPORT_SYMBOL_GPL(spmi_driver_register); -+ -+static void __exit spmi_exit(void) -+{ -+ bus_unregister(&spmi_bus_type); -+} -+module_exit(spmi_exit); -+ -+static int __init spmi_init(void) -+{ -+ return bus_register(&spmi_bus_type); -+} -+postcore_initcall(spmi_init); -+ -+MODULE_LICENSE("GPL v2"); -+MODULE_DESCRIPTION("SPMI module"); -+MODULE_ALIAS("platform:spmi"); ---- /dev/null -+++ b/include/dt-bindings/spmi/spmi.h -@@ -0,0 +1,18 @@ -+/* Copyright (c) 2013, The Linux Foundation. All rights reserved. -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 and -+ * only version 2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ */ -+#ifndef __DT_BINDINGS_SPMI_H -+#define __DT_BINDINGS_SPMI_H -+ -+#define SPMI_USID 0 -+#define SPMI_GSID 1 -+ -+#endif ---- a/include/linux/mod_devicetable.h -+++ b/include/linux/mod_devicetable.h -@@ -432,6 +432,14 @@ struct spi_device_id { - kernel_ulong_t driver_data; /* Data private to the driver */ - }; - -+#define SPMI_NAME_SIZE 32 -+#define SPMI_MODULE_PREFIX "spmi:" -+ -+struct spmi_device_id { -+ char name[SPMI_NAME_SIZE]; -+ kernel_ulong_t driver_data; /* Data private to the driver */ -+}; -+ - /* dmi */ - enum dmi_field { - DMI_NONE, ---- /dev/null -+++ b/include/linux/spmi.h -@@ -0,0 +1,191 @@ -+/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 and -+ * only version 2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ */ -+#ifndef _LINUX_SPMI_H -+#define _LINUX_SPMI_H -+ -+#include <linux/types.h> -+#include <linux/device.h> -+#include <linux/mod_devicetable.h> -+ -+/* Maximum slave identifier */ -+#define SPMI_MAX_SLAVE_ID 16 -+ -+/* SPMI Commands */ -+#define SPMI_CMD_EXT_WRITE 0x00 -+#define SPMI_CMD_RESET 0x10 -+#define SPMI_CMD_SLEEP 0x11 -+#define SPMI_CMD_SHUTDOWN 0x12 -+#define SPMI_CMD_WAKEUP 0x13 -+#define SPMI_CMD_AUTHENTICATE 0x14 -+#define SPMI_CMD_MSTR_READ 0x15 -+#define SPMI_CMD_MSTR_WRITE 0x16 -+#define SPMI_CMD_TRANSFER_BUS_OWNERSHIP 0x1A -+#define SPMI_CMD_DDB_MASTER_READ 0x1B -+#define SPMI_CMD_DDB_SLAVE_READ 0x1C -+#define SPMI_CMD_EXT_READ 0x20 -+#define SPMI_CMD_EXT_WRITEL 0x30 -+#define SPMI_CMD_EXT_READL 0x38 -+#define SPMI_CMD_WRITE 0x40 -+#define SPMI_CMD_READ 0x60 -+#define SPMI_CMD_ZERO_WRITE 0x80 -+ -+/** -+ * struct spmi_device - Basic representation of an SPMI device -+ * @dev: Driver model representation of the device. -+ * @ctrl: SPMI controller managing the bus hosting this device. -+ * @usid: This devices' Unique Slave IDentifier. -+ */ -+struct spmi_device { -+ struct device dev; -+ struct spmi_controller *ctrl; -+ u8 usid; -+}; -+ -+static inline struct spmi_device *to_spmi_device(struct device *d) -+{ -+ return container_of(d, struct spmi_device, dev); -+} -+ -+static inline void *spmi_device_get_drvdata(const struct spmi_device *sdev) -+{ -+ return dev_get_drvdata(&sdev->dev); -+} -+ -+static inline void spmi_device_set_drvdata(struct spmi_device *sdev, void *data) -+{ -+ dev_set_drvdata(&sdev->dev, data); -+} -+ -+struct spmi_device *spmi_device_alloc(struct spmi_controller *ctrl); -+ -+static inline void spmi_device_put(struct spmi_device *sdev) -+{ -+ if (sdev) -+ put_device(&sdev->dev); -+} -+ -+int spmi_device_add(struct spmi_device *sdev); -+ -+void spmi_device_remove(struct spmi_device *sdev); -+ -+/** -+ * struct spmi_controller - interface to the SPMI master controller -+ * @dev: Driver model representation of the device. -+ * @nr: board-specific number identifier for this controller/bus -+ * @cmd: sends a non-data command sequence on the SPMI bus. -+ * @read_cmd: sends a register read command sequence on the SPMI bus. -+ * @write_cmd: sends a register write command sequence on the SPMI bus. -+ */ -+struct spmi_controller { -+ struct device dev; -+ unsigned int nr; -+ int (*cmd)(struct spmi_controller *ctrl, u8 opcode, u8 sid); -+ int (*read_cmd)(struct spmi_controller *ctrl, u8 opcode, -+ u8 sid, u16 addr, u8 *buf, size_t len); -+ int (*write_cmd)(struct spmi_controller *ctrl, u8 opcode, -+ u8 sid, u16 addr, const u8 *buf, size_t len); -+}; -+ -+static inline struct spmi_controller *to_spmi_controller(struct device *d) -+{ -+ return container_of(d, struct spmi_controller, dev); -+} -+ -+static inline -+void *spmi_controller_get_drvdata(const struct spmi_controller *ctrl) -+{ -+ return dev_get_drvdata(&ctrl->dev); -+} -+ -+static inline void spmi_controller_set_drvdata(struct spmi_controller *ctrl, -+ void *data) -+{ -+ dev_set_drvdata(&ctrl->dev, data); -+} -+ -+struct spmi_controller *spmi_controller_alloc(struct device *parent, -+ size_t size); -+ -+/** -+ * spmi_controller_put() - decrement controller refcount -+ * @ctrl SPMI controller. -+ */ -+static inline void spmi_controller_put(struct spmi_controller *ctrl) -+{ -+ if (ctrl) -+ put_device(&ctrl->dev); -+} -+ -+int spmi_controller_add(struct spmi_controller *ctrl); -+void spmi_controller_remove(struct spmi_controller *ctrl); -+ -+/** -+ * struct spmi_driver - SPMI slave device driver -+ * @driver: SPMI device drivers should initialize name and owner field of -+ * this structure. -+ * @probe: binds this driver to a SPMI device. -+ * @remove: unbinds this driver from the SPMI device. -+ * @shutdown: standard shutdown callback used during powerdown/halt. -+ * @suspend: standard suspend callback used during system suspend. -+ * @resume: standard resume callback used during system resume. -+ * -+ * If PM runtime support is desired for a slave, a device driver can call -+ * pm_runtime_put() from their probe() routine (and a balancing -+ * pm_runtime_get() in remove()). PM runtime support for a slave is -+ * implemented by issuing a SLEEP command to the slave on runtime_suspend(), -+ * transitioning the slave into the SLEEP state. On runtime_resume(), a WAKEUP -+ * command is sent to the slave to bring it back to ACTIVE. -+ */ -+struct spmi_driver { -+ struct device_driver driver; -+ int (*probe)(struct spmi_device *sdev); -+ void (*remove)(struct spmi_device *sdev); -+}; -+ -+static inline struct spmi_driver *to_spmi_driver(struct device_driver *d) -+{ -+ return container_of(d, struct spmi_driver, driver); -+} -+ -+int spmi_driver_register(struct spmi_driver *sdrv); -+ -+/** -+ * spmi_driver_unregister() - unregister an SPMI client driver -+ * @sdrv: the driver to unregister -+ */ -+static inline void spmi_driver_unregister(struct spmi_driver *sdrv) -+{ -+ if (sdrv) -+ driver_unregister(&sdrv->driver); -+} -+ -+#define module_spmi_driver(__spmi_driver) \ -+ module_driver(__spmi_driver, spmi_driver_register, \ -+ spmi_driver_unregister) -+ -+int spmi_register_read(struct spmi_device *sdev, u8 addr, u8 *buf); -+int spmi_ext_register_read(struct spmi_device *sdev, u8 addr, u8 *buf, -+ size_t len); -+int spmi_ext_register_readl(struct spmi_device *sdev, u16 addr, u8 *buf, -+ size_t len); -+int spmi_register_write(struct spmi_device *sdev, u8 addr, u8 data); -+int spmi_register_zero_write(struct spmi_device *sdev, u8 data); -+int spmi_ext_register_write(struct spmi_device *sdev, u8 addr, -+ const u8 *buf, size_t len); -+int spmi_ext_register_writel(struct spmi_device *sdev, u16 addr, -+ const u8 *buf, size_t len); -+int spmi_command_reset(struct spmi_device *sdev); -+int spmi_command_sleep(struct spmi_device *sdev); -+int spmi_command_wakeup(struct spmi_device *sdev); -+int spmi_command_shutdown(struct spmi_device *sdev); -+ -+#endif |