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== Changes to existing drivers ==

Browse source 
- Constify structures; throughout the subsystem
    - Move support to DT in; cros_ec
    - DT changes and documentation; cros-ec, max77693, max77686, arizona, da9063
    - ACPI changes and documentation; mfd-core
    - Use different platform specific API in; cros_ec_*, arizona-core
    - Remove unused parent field from; cros_ec_i2c
    - Add wake-up/reset delay in; cross_ec_spi, arizona-core
    - Staticise structures/functions in; cros_ec
    - Remove redundant code; arizona-core, max77686
    - Bugfix; twl4030-power
    - Allow compile test; aat2870, tps65910
    - MAINTAINERS adaptions; samsung, syscon
    - Resource Management (devm_*); arizona-core
    - Refactor Reset code; arizona-core
    - Insist on at least one full boot; arizona-core
    - Trivial formatting; arizona-core
    - Add low-power-sleep; arizona-core
    - IRQ ONESHOT changes; twl4030-irq, mc13xxx-core, wm831x-auxadc, htc-i2cpld,
                           wm8350-core, ab8500-debugfs, ab8500-gpadc, si476x-i2c
 
  == (Re-)moved drivers ==
    - Move protocol helpers out to drivers/platform; cros_ec
 
  == New drivers/supported devices ==
    - Add support for AXP22x into axp20x
    - Add support for OnKey into da9063-core
    - Add support for Pinctrl into mt6397-core
    - New STMicroelectronics LPC Watchdog driver
    - New STMicroelectronics LPC Real-Time Clock driver
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Merge tag 'mfd-for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "Changes to existing drivers:
   - Constify structures; throughout the subsystem
   - Move support to DT in; cros_ec
   - DT changes and documentation; cros-ec, max77693, max77686, arizona, da9063
   - ACPI changes and documentation; mfd-core
   - Use different platform specific API in; cros_ec_*, arizona-core
   - Remove unused parent field from; cros_ec_i2c
   - Add wake-up/reset delay in; cross_ec_spi, arizona-core
   - Staticise structures/functions in; cros_ec
   - Remove redundant code; arizona-core, max77686
   - Bugfix; twl4030-power
   - Allow compile test; aat2870, tps65910
   - MAINTAINERS adaptions; samsung, syscon
   - Resource Management (devm_*); arizona-core
   - Refactor Reset code; arizona-core
   - Insist on at least one full boot; arizona-core
   - Trivial formatting; arizona-core
   - Add low-power-sleep; arizona-core
   - IRQ ONESHOT changes; twl4030-irq, mc13xxx-core, wm831x-auxadc, htc-i2cpld,
                          wm8350-core, ab8500-debugfs, ab8500-gpadc, si476x-i2c

  (Re-)moved drivers:
   - Move protocol helpers out to drivers/platform; cros_ec

  New drivers/supported devices:
   - Add support for AXP22x into axp20x
   - Add support for OnKey into da9063-core
   - Add support for Pinctrl into mt6397-core
   - New STMicroelectronics LPC Watchdog driver
   - New STMicroelectronics LPC Real-Time Clock driver"

* tag 'mfd-for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (59 commits)
  mfd: lpc_ich: Assign subdevice ids automatically
  mfd: si476x-i2c: Pass the IRQF_ONESHOT flag
  mfd: ab8500-gpadc: Pass the IRQF_ONESHOT flag
  mfd: ab8500-debugfs: Pass the IRQF_ONESHOT flag
  mfd: wm8350-core: Pass the IRQF_ONESHOT flag
  mfd: htc-i2cpld: Pass the IRQF_ONESHOT flag
  mfd: wm831x-auxadc: Pass the IRQF_ONESHOT flag
  mfd: mc13xxx-core: Pass the IRQF_ONESHOT flag
  mfd: twl4030-irq: Pass the IRQF_ONESHOT flag
  mfd: mt6397-core: Add GPIO sub-module support
  mfd: arizona: Add convience defines for micd_rate/micd_bias_starttime
  mfd: dt: Add bindings for DA9063 OnKey
  mfd: da9063: Add support for OnKey driver
  mfd: arizona: Fix incorrect Makefile conditionals
  mfd: arizona: Add stub for wm5102_patch()
  mfd: Check ACPI device companion before checking resources
  Documentation: Add WM8998/WM1814 device tree bindings
  mfd: arizona: Split INx_MODE into two fields
  mfd: wm5110: Add delay before releasing reset line
  mfd: arizona: Add better support for system suspend
  ...
This commit is contained in:
Linus Torvalds 2015-06-23 17:31:27 -07:00
commit 84e9c87e6f
79 changed files with 3621 additions and 660 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/i2c/busses/Kconfig
View file

@ -1103,7 +1103,7 @@ config I2C_SIBYTE
config I2C_CROS_EC_TUNNEL
tristate "ChromeOS EC tunnel I2C bus"
depends on MFD_CROS_EC
depends on CROS_EC_PROTO
help
If you say yes here you get an I2C bus that will tunnel i2c commands
through to the other side of the ChromeOS EC to the i2c bus

45
drivers/i2c/busses/i2c-cros-ec-tunnel.c
View file

@ -182,8 +182,9 @@ static int ec_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg i2c_msgs[],
const u16 bus_num = bus->remote_bus;
int request_len;
int response_len;
int alloc_size;
int result;
struct cros_ec_command msg = { };
struct cros_ec_command *msg;
request_len = ec_i2c_count_message(i2c_msgs, num);
if (request_len < 0) {
@ -198,25 +199,39 @@ static int ec_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg i2c_msgs[],
return response_len;
}
result = ec_i2c_construct_message(msg.outdata, i2c_msgs, num, bus_num);
if (result)
return result;
alloc_size = max(request_len, response_len);
msg = kmalloc(sizeof(*msg) + alloc_size, GFP_KERNEL);
if (!msg)
return -ENOMEM;
msg.version = 0;
msg.command = EC_CMD_I2C_PASSTHRU;
msg.outsize = request_len;
msg.insize = response_len;
result = ec_i2c_construct_message(msg->data, i2c_msgs, num, bus_num);
if (result) {
dev_err(dev, "Error constructing EC i2c message %d\n", result);
goto exit;
}
result = cros_ec_cmd_xfer(bus->ec, &msg);
if (result < 0)
return result;
msg->version = 0;
msg->command = EC_CMD_I2C_PASSTHRU;
msg->outsize = request_len;
msg->insize = response_len;
result = ec_i2c_parse_response(msg.indata, i2c_msgs, &num);
if (result < 0)
return result;
result = cros_ec_cmd_xfer(bus->ec, msg);
if (result < 0) {
dev_err(dev, "Error transferring EC i2c message %d\n", result);
goto exit;
}
result = ec_i2c_parse_response(msg->data, i2c_msgs, &num);
if (result < 0) {
dev_err(dev, "Error parsing EC i2c message %d\n", result);
goto exit;
}
/* Indicate success by saying how many messages were sent */
return num;
result = num;
exit:
kfree(msg);
return result;
}
static u32 ec_i2c_functionality(struct i2c_adapter *adap)