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Merge tag 'mfd-next-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Browse Source 
Pull MFD updates from Lee Jones:
 "New Drivers:
   - Add STMPE ADC Input driver
   - Add STMicroelectronics STPMIC1 Parent driver
   - Add STMicroelectronics STPMIC1 OnKey Misc driver
   - Add STMicroelectronics STPMIC1 Watchdog driver
   - Add Cirrus Logic Lochnagar Parent driver
   - Add TQ-Systems TQMX86 Parent driver

  New Device Support:
   - Add support for ADC to STMPE

  New (or moved) Functionality:
   - Move Lightbar functionality to its own driver; cros_ec_lightbar
   - Move VBC functionality to its own driver; cros_ec_vbc
   - Move VBC functionality to its own driver; cros_ec_vbc
   - Move DebugFS functionality to its own driver; cros_ec_debugfs
   - Move SYSFS functionality to its own driver; cros_ec_sysfs
   - Add support for input voltage options; tps65218

  Fixes:
   - Use devm_* managed resources; cros_ec
   - Device Tree documentation; stmpe, aspeed-lpc, lochnagar
   - Trivial Clean-ups; stmpe
   - Rip out broken modular code; aat2870-core, adp5520, as3711,
         db8500-prcmu, htc-i2cpld, max8925-core, rc5t583, sta2x11-mfd,
	 syscon, tps65090, tps65910, tps68470 tps80031, wm831x-spi,
	 wm831x-i2c, wm831x-core, wm8350-i2c, wm8350-core, wm8400-core
   - Kconfig fixups; INTEL_SOC_PMIC
   - Improve error path; sm501, sec-core
   - Use struct_size() helper; sm501
   - Constify; at91-usart
   - Use pointers instead of copying data; at91-usart
   - Deliver proper return value; cros_ec_dev
   - Trivial formatting/whitespace; sec-core"

* tag 'mfd-next-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (53 commits)
  mfd: mxs-lradc: Mark expected switch fall-through
  mfd: sec-core: Cleanup formatting to a consistent style
  mfd: tqmx86: IO controller with I2C, Wachdog and GPIO
  mfd: intel-lpss: Move linux/pm.h to the local header
  mfd: cros_ec_dev: Return number of bytes read with CROS_EC_DEV_IOCRDMEM
  mfd: tps68470: Drop unused MODULE_DEVICE_TABLE
  mfd: at91-usart: No need to copy mfd_cell in probe
  mfd: at91-usart: Constify at91_usart_spi_subdev and at91_usart_serial_subdev
  mfd: lochnagar: Add support for the Cirrus Logic Lochnagar
  mfd: lochnagar: Add initial binding documentation
  dt-bindings: mfd: aspeed-lpc: Make parameter optional
  mfd: sec-core: Return gracefully instead of BUG() if device cannot match
  mfd: sm501: Use struct_size() in devm_kzalloc()
  mfd: sm501: Fix potential NULL pointer dereference
  mfd: Kconfig: Fix I2C_DESIGNWARE_PLATFORM dependencies
  mfd: tps65218.c: Add input voltage options
  mfd: wm8400-core: Make it explicitly non-modular
  mfd: wm8350-core: Drop unused module infrastructure from non-modular code
  mfd: wm8350-i2c: Make it explicitly non-modular
  mfd: wm831x-core: Drop unused module infrastructure from non-modular code
  ...
This commit is contained in:
Linus Torvalds
2019-03-08 10:02:58 -08:00
parent 04e0361848 d2d833e0bf
commit cf2e8c544c
79 changed files with 3580 additions and 665 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
drivers/platform/chrome/Kconfig
View File

@@ -49,9 +49,6 @@ config CHROMEOS_TBMC
To compile this driver as a module, choose M here: the
module will be called chromeos_tbmc.
config CROS_EC_CTL
tristate
config CROS_EC_I2C
tristate "ChromeOS Embedded Controller (I2C)"
depends on MFD_CROS_EC && I2C
@@ -111,4 +108,48 @@ config CROS_KBD_LED_BACKLIGHT
To compile this driver as a module, choose M here: the
module will be called cros_kbd_led_backlight.
config CROS_EC_LIGHTBAR
tristate "Chromebook Pixel's lightbar support"
depends on MFD_CROS_EC_CHARDEV
default MFD_CROS_EC_CHARDEV
help
This option exposes the Chromebook Pixel's lightbar to
userspace.
To compile this driver as a module, choose M here: the
module will be called cros_ec_lightbar.
config CROS_EC_VBC
tristate "ChromeOS EC vboot context support"
depends on MFD_CROS_EC_CHARDEV && OF
default MFD_CROS_EC_CHARDEV
help
This option exposes the ChromeOS EC vboot context nvram to
userspace.
To compile this driver as a module, choose M here: the
module will be called cros_ec_vbc.
config CROS_EC_DEBUGFS
tristate "Export ChromeOS EC internals in DebugFS"
depends on MFD_CROS_EC_CHARDEV && DEBUG_FS
default MFD_CROS_EC_CHARDEV
help
This option exposes the ChromeOS EC device internals to
userspace.
To compile this driver as a module, choose M here: the
module will be called cros_ec_debugfs.
config CROS_EC_SYSFS
tristate "ChromeOS EC control and information through sysfs"
depends on MFD_CROS_EC_CHARDEV && SYSFS
default MFD_CROS_EC_CHARDEV
help
This option exposes some sysfs attributes to control and get
information from ChromeOS EC.
To compile this driver as a module, choose M here: the
module will be called cros_ec_sysfs.
endif # CHROMEOS_PLATFORMS

7
drivers/platform/chrome/Makefile
View File

@@ -3,9 +3,6 @@
obj-$(CONFIG_CHROMEOS_LAPTOP) += chromeos_laptop.o
obj-$(CONFIG_CHROMEOS_PSTORE) += chromeos_pstore.o
obj-$(CONFIG_CHROMEOS_TBMC) += chromeos_tbmc.o
cros_ec_ctl-objs := cros_ec_sysfs.o cros_ec_lightbar.o \
cros_ec_vbc.o cros_ec_debugfs.o
obj-$(CONFIG_CROS_EC_CTL) += cros_ec_ctl.o
obj-$(CONFIG_CROS_EC_I2C) += cros_ec_i2c.o
obj-$(CONFIG_CROS_EC_SPI) += cros_ec_spi.o
cros_ec_lpcs-objs := cros_ec_lpc.o cros_ec_lpc_reg.o
@@ -13,3 +10,7 @@ cros_ec_lpcs-$(CONFIG_CROS_EC_LPC_MEC) += cros_ec_lpc_mec.o
obj-$(CONFIG_CROS_EC_LPC) += cros_ec_lpcs.o
obj-$(CONFIG_CROS_EC_PROTO) += cros_ec_proto.o
obj-$(CONFIG_CROS_KBD_LED_BACKLIGHT) += cros_kbd_led_backlight.o
obj-$(CONFIG_CROS_EC_LIGHTBAR) += cros_ec_lightbar.o
obj-$(CONFIG_CROS_EC_VBC) += cros_ec_vbc.o
obj-$(CONFIG_CROS_EC_DEBUGFS) += cros_ec_debugfs.o
obj-$(CONFIG_CROS_EC_SYSFS) += cros_ec_sysfs.o

66
drivers/platform/chrome/cros_ec_debugfs.c
View File

@@ -23,12 +23,16 @@
#include <linux/fs.h>
#include <linux/mfd/cros_ec.h>
#include <linux/mfd/cros_ec_commands.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/poll.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/wait.h>
#define DRV_NAME "cros-ec-debugfs"
#define LOG_SHIFT 14
#define LOG_SIZE (1 << LOG_SHIFT)
#define LOG_POLL_SEC 10
@@ -423,8 +427,9 @@ static int cros_ec_create_pdinfo(struct cros_ec_debugfs *debug_info)
return 0;
}
int cros_ec_debugfs_init(struct cros_ec_dev *ec)
static int cros_ec_debugfs_probe(struct platform_device *pd)
{
struct cros_ec_dev *ec = dev_get_drvdata(pd->dev.parent);
struct cros_ec_platform *ec_platform = dev_get_platdata(ec->dev);
const char *name = ec_platform->ec_name;
struct cros_ec_debugfs *debug_info;
@@ -453,40 +458,57 @@ int cros_ec_debugfs_init(struct cros_ec_dev *ec)
ec->debug_info = debug_info;
dev_set_drvdata(&pd->dev, ec);
return 0;
remove_debugfs:
debugfs_remove_recursive(debug_info->dir);
return ret;
}
EXPORT_SYMBOL(cros_ec_debugfs_init);
void cros_ec_debugfs_remove(struct cros_ec_dev *ec)
static int cros_ec_debugfs_remove(struct platform_device *pd)
{
if (!ec->debug_info)
return;
struct cros_ec_dev *ec = dev_get_drvdata(pd->dev.parent);
debugfs_remove_recursive(ec->debug_info->dir);
cros_ec_cleanup_console_log(ec->debug_info);
}
EXPORT_SYMBOL(cros_ec_debugfs_remove);
void cros_ec_debugfs_suspend(struct cros_ec_dev *ec)
{
/*
* cros_ec_debugfs_init() failures are non-fatal; it's also possible
* that we initted things but decided that console log wasn't supported.
* We'll use the same set of checks that cros_ec_debugfs_remove() +
* cros_ec_cleanup_console_log() end up using to handle those cases.
*/
if (ec->debug_info && ec->debug_info->log_buffer.buf)
cancel_delayed_work_sync(&ec->debug_info->log_poll_work);
return 0;
}
EXPORT_SYMBOL(cros_ec_debugfs_suspend);
void cros_ec_debugfs_resume(struct cros_ec_dev *ec)
static int __maybe_unused cros_ec_debugfs_suspend(struct device *dev)
{
if (ec->debug_info && ec->debug_info->log_buffer.buf)
schedule_delayed_work(&ec->debug_info->log_poll_work, 0);
struct cros_ec_dev *ec = dev_get_drvdata(dev);
cancel_delayed_work_sync(&ec->debug_info->log_poll_work);
return 0;
}
EXPORT_SYMBOL(cros_ec_debugfs_resume);
static int __maybe_unused cros_ec_debugfs_resume(struct device *dev)
{
struct cros_ec_dev *ec = dev_get_drvdata(dev);
schedule_delayed_work(&ec->debug_info->log_poll_work, 0);
return 0;
}
static SIMPLE_DEV_PM_OPS(cros_ec_debugfs_pm_ops,
cros_ec_debugfs_suspend, cros_ec_debugfs_resume);
static struct platform_driver cros_ec_debugfs_driver = {
.driver = {
.name = DRV_NAME,
.pm = &cros_ec_debugfs_pm_ops,
},
.probe = cros_ec_debugfs_probe,
.remove = cros_ec_debugfs_remove,
};
module_platform_driver(cros_ec_debugfs_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Debug logs for ChromeOS EC");
MODULE_ALIAS("platform:" DRV_NAME);

10
drivers/platform/chrome/cros_ec_i2c.c
View File

@@ -317,15 +317,6 @@ static int cros_ec_i2c_probe(struct i2c_client *client,
return 0;
}
static int cros_ec_i2c_remove(struct i2c_client *client)
{
struct cros_ec_device *ec_dev = i2c_get_clientdata(client);
cros_ec_remove(ec_dev);
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int cros_ec_i2c_suspend(struct device *dev)
{
@@ -376,7 +367,6 @@ static struct i2c_driver cros_ec_driver = {
.pm = &cros_ec_i2c_pm_ops,
},
.probe = cros_ec_i2c_probe,
.remove = cros_ec_i2c_remove,
.id_table = cros_ec_i2c_id,
};

140
drivers/platform/chrome/cros_ec_lightbar.c
View File

@@ -33,6 +33,8 @@
#include <linux/uaccess.h>
#include <linux/slab.h>
#define DRV_NAME "cros-ec-lightbar"
/* Rate-limit the lightbar interface to prevent DoS. */
static unsigned long lb_interval_jiffies = 50 * HZ / 1000;
@@ -41,7 +43,6 @@ static unsigned long lb_interval_jiffies = 50 * HZ / 1000;
* If this is true, we won't do anything during suspend/resume.
*/
static bool userspace_control;
static struct cros_ec_dev *ec_with_lightbar;
static ssize_t interval_msec_show(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -373,15 +374,12 @@ error:
return ret;
}
int lb_manual_suspend_ctrl(struct cros_ec_dev *ec, uint8_t enable)
static int lb_manual_suspend_ctrl(struct cros_ec_dev *ec, uint8_t enable)
{
struct ec_params_lightbar *param;
struct cros_ec_command *msg;
int ret;
if (ec != ec_with_lightbar)
return 0;
msg = alloc_lightbar_cmd_msg(ec);
if (!msg)
return -ENOMEM;
@@ -408,25 +406,6 @@ error:
return ret;
}
EXPORT_SYMBOL(lb_manual_suspend_ctrl);
int lb_suspend(struct cros_ec_dev *ec)
{
if (userspace_control || ec != ec_with_lightbar)
return 0;
return lb_send_empty_cmd(ec, LIGHTBAR_CMD_SUSPEND);
}
EXPORT_SYMBOL(lb_suspend);
int lb_resume(struct cros_ec_dev *ec)
{
if (userspace_control || ec != ec_with_lightbar)
return 0;
return lb_send_empty_cmd(ec, LIGHTBAR_CMD_RESUME);
}
EXPORT_SYMBOL(lb_resume);
static ssize_t sequence_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
@@ -584,36 +563,91 @@ static struct attribute *__lb_cmds_attrs[] = {
NULL,
};
bool ec_has_lightbar(struct cros_ec_dev *ec)
{
return !!get_lightbar_version(ec, NULL, NULL);
}
static umode_t cros_ec_lightbar_attrs_are_visible(struct kobject *kobj,
struct attribute *a, int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct cros_ec_dev *ec = to_cros_ec_dev(dev);
struct platform_device *pdev = to_platform_device(ec->dev);
struct cros_ec_platform *pdata = pdev->dev.platform_data;
int is_cros_ec;
is_cros_ec = strcmp(pdata->ec_name, CROS_EC_DEV_NAME);
if (is_cros_ec != 0)
return 0;
/* Only instantiate this stuff if the EC has a lightbar */
if (ec_has_lightbar(ec)) {
ec_with_lightbar = ec;
return a->mode;
}
return 0;
}
struct attribute_group cros_ec_lightbar_attr_group = {
.name = "lightbar",
.attrs = __lb_cmds_attrs,
.is_visible = cros_ec_lightbar_attrs_are_visible,
};
EXPORT_SYMBOL(cros_ec_lightbar_attr_group);
static int cros_ec_lightbar_probe(struct platform_device *pd)
{
struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent);
struct cros_ec_platform *pdata = dev_get_platdata(ec_dev->dev);
struct device *dev = &pd->dev;
int ret;
/*
* Only instantiate the lightbar if the EC name is 'cros_ec'. Other EC
* devices like 'cros_pd' doesn't have a lightbar.
*/
if (strcmp(pdata->ec_name, CROS_EC_DEV_NAME) != 0)
return -ENODEV;
/*
* Ask then for the lightbar version, if it's 0 then the 'cros_ec'
* doesn't have a lightbar.
*/
if (!get_lightbar_version(ec_dev, NULL, NULL))
return -ENODEV;
/* Take control of the lightbar from the EC. */
lb_manual_suspend_ctrl(ec_dev, 1);
ret = sysfs_create_group(&ec_dev->class_dev.kobj,
&cros_ec_lightbar_attr_group);
if (ret < 0)
dev_err(dev, "failed to create %s attributes. err=%d\n",
cros_ec_lightbar_attr_group.name, ret);
return ret;
}
static int cros_ec_lightbar_remove(struct platform_device *pd)
{
struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent);
sysfs_remove_group(&ec_dev->class_dev.kobj,
&cros_ec_lightbar_attr_group);
/* Let the EC take over the lightbar again. */
lb_manual_suspend_ctrl(ec_dev, 0);
return 0;
}
static int __maybe_unused cros_ec_lightbar_resume(struct device *dev)
{
struct cros_ec_dev *ec_dev = dev_get_drvdata(dev);
if (userspace_control)
return 0;
return lb_send_empty_cmd(ec_dev, LIGHTBAR_CMD_RESUME);
}
static int __maybe_unused cros_ec_lightbar_suspend(struct device *dev)
{
struct cros_ec_dev *ec_dev = dev_get_drvdata(dev);
if (userspace_control)
return 0;
return lb_send_empty_cmd(ec_dev, LIGHTBAR_CMD_SUSPEND);
}
static SIMPLE_DEV_PM_OPS(cros_ec_lightbar_pm_ops,
cros_ec_lightbar_suspend, cros_ec_lightbar_resume);
static struct platform_driver cros_ec_lightbar_driver = {
.driver = {
.name = DRV_NAME,
.pm = &cros_ec_lightbar_pm_ops,
},
.probe = cros_ec_lightbar_probe,
.remove = cros_ec_lightbar_remove,
};
module_platform_driver(cros_ec_lightbar_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Expose the Chromebook Pixel's lightbar to userspace");
MODULE_ALIAS("platform:" DRV_NAME);

4
drivers/platform/chrome/cros_ec_lpc.c
View File

@@ -327,7 +327,6 @@ static int cros_ec_lpc_probe(struct platform_device *pdev)
static int cros_ec_lpc_remove(struct platform_device *pdev)
{
struct cros_ec_device *ec_dev;
struct acpi_device *adev;
adev = ACPI_COMPANION(&pdev->dev);
@@ -335,9 +334,6 @@ static int cros_ec_lpc_remove(struct platform_device *pdev)
acpi_remove_notify_handler(adev->handle, ACPI_ALL_NOTIFY,
cros_ec_lpc_acpi_notify);
ec_dev = platform_get_drvdata(pdev);
cros_ec_remove(ec_dev);
return 0;
}

11
drivers/platform/chrome/cros_ec_spi.c
View File

@@ -685,16 +685,6 @@ static int cros_ec_spi_probe(struct spi_device *spi)
return 0;
}
static int cros_ec_spi_remove(struct spi_device *spi)
{
struct cros_ec_device *ec_dev;
ec_dev = spi_get_drvdata(spi);
cros_ec_remove(ec_dev);
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int cros_ec_spi_suspend(struct device *dev)
{
@@ -733,7 +723,6 @@ static struct spi_driver cros_ec_driver_spi = {
.pm = &cros_ec_spi_pm_ops,
},
.probe = cros_ec_spi_probe,
.remove = cros_ec_spi_remove,
.id_table = cros_ec_spi_id,
};

36
drivers/platform/chrome/cros_ec_sysfs.c
View File

@@ -34,6 +34,8 @@
#include <linux/types.h>
#include <linux/uaccess.h>
#define DRV_NAME "cros-ec-sysfs"
/* Accessor functions */
static ssize_t reboot_show(struct device *dev,
@@ -353,7 +355,39 @@ struct attribute_group cros_ec_attr_group = {
.attrs = __ec_attrs,
.is_visible = cros_ec_ctrl_visible,
};
EXPORT_SYMBOL(cros_ec_attr_group);
static int cros_ec_sysfs_probe(struct platform_device *pd)
{
struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent);
struct device *dev = &pd->dev;
int ret;
ret = sysfs_create_group(&ec_dev->class_dev.kobj, &cros_ec_attr_group);
if (ret < 0)
dev_err(dev, "failed to create attributes. err=%d\n", ret);
return ret;
}
static int cros_ec_sysfs_remove(struct platform_device *pd)
{
struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent);
sysfs_remove_group(&ec_dev->class_dev.kobj, &cros_ec_attr_group);
return 0;
}
static struct platform_driver cros_ec_sysfs_driver = {
.driver = {
.name = DRV_NAME,
},
.probe = cros_ec_sysfs_probe,
.remove = cros_ec_sysfs_remove,
};
module_platform_driver(cros_ec_sysfs_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("ChromeOS EC control driver");
MODULE_ALIAS("platform:" DRV_NAME);

59
drivers/platform/chrome/cros_ec_vbc.c
View File

@@ -22,8 +22,11 @@
#include <linux/platform_device.h>
#include <linux/mfd/cros_ec.h>
#include <linux/mfd/cros_ec_commands.h>
#include <linux/module.h>
#include <linux/slab.h>
#define DRV_NAME "cros-ec-vbc"
static ssize_t vboot_context_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *att, char *buf,
loff_t pos, size_t count)
@@ -105,21 +108,6 @@ static ssize_t vboot_context_write(struct file *filp, struct kobject *kobj,
return data_sz;
}
static umode_t cros_ec_vbc_is_visible(struct kobject *kobj,
struct bin_attribute *a, int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct cros_ec_dev *ec = to_cros_ec_dev(dev);
struct device_node *np = ec->ec_dev->dev->of_node;
if (IS_ENABLED(CONFIG_OF) && np) {
if (of_property_read_bool(np, "google,has-vbc-nvram"))
return a->attr.mode;
}
return 0;
}
static BIN_ATTR_RW(vboot_context, 16);
static struct bin_attribute *cros_ec_vbc_bin_attrs[] = {
@@ -130,6 +118,43 @@ static struct bin_attribute *cros_ec_vbc_bin_attrs[] = {
struct attribute_group cros_ec_vbc_attr_group = {
.name = "vbc",
.bin_attrs = cros_ec_vbc_bin_attrs,
.is_bin_visible = cros_ec_vbc_is_visible,
};
EXPORT_SYMBOL(cros_ec_vbc_attr_group);
static int cros_ec_vbc_probe(struct platform_device *pd)
{
struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent);
struct device *dev = &pd->dev;
int ret;
ret = sysfs_create_group(&ec_dev->class_dev.kobj,
&cros_ec_vbc_attr_group);
if (ret < 0)
dev_err(dev, "failed to create %s attributes. err=%d\n",
cros_ec_vbc_attr_group.name, ret);
return ret;
}
static int cros_ec_vbc_remove(struct platform_device *pd)
{
struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent);
sysfs_remove_group(&ec_dev->class_dev.kobj,
&cros_ec_vbc_attr_group);
return 0;
}
static struct platform_driver cros_ec_vbc_driver = {
.driver = {
.name = DRV_NAME,
},
.probe = cros_ec_vbc_probe,
.remove = cros_ec_vbc_remove,
};
module_platform_driver(cros_ec_vbc_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Expose the vboot context nvram to userspace");
MODULE_ALIAS("platform:" DRV_NAME);