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Commit 358f8c26 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 

Pull i2c fixes from Wolfram Sang:
 "The main thing is to allow empty id_tables for ACPI to make some
  drivers get probed again. It looks a bit bigger than usual because it
  needs some internal renaming, too.

  Other than that, there is a fix for broken DSTDs, a super simple
  enablement for ARM MPS, and two documentation fixes which I'd like to
  see in v4.13 already"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: rephrase explanation of I2C_CLASS_DEPRECATED
  i2c: allow i2c-versatile for ARM MPS platforms
  i2c: designware: Some broken DSTDs use 1MiHz instead of 1MHz
  i2c: designware: Print clock freq on invalid clock freq error
  i2c: core: Allow empty id_table in ACPI case as well
  i2c: mux: pinctrl: mention correct module name in Kconfig help text
parents 31cf92f3 9c800349

drivers/i2c/busses/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -983,7 +983,7 @@ config I2C_UNIPHIER_F 


config I2C_VERSATILE

	tristate "ARM Versatile/Realview I2C bus support"

	depends on ARCH_VERSATILE || ARCH_REALVIEW || ARCH_VEXPRESS || COMPILE_TEST

	depends on ARCH_MPS2 || ARCH_VERSATILE || ARCH_REALVIEW || ARCH_VEXPRESS || COMPILE_TEST

	select I2C_ALGOBIT

	help

	  Say yes if you want to support the I2C serial bus on ARMs Versatile

drivers/i2c/busses/i2c-designware-platdrv.c

+5 −1
Original line number Diff line number Diff line
@@ -298,6 +298,9 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) 
	}



	acpi_speed = i2c_acpi_find_bus_speed(&pdev->dev);

	/* Some broken DSTDs use 1MiHz instead of 1MHz */

	if (acpi_speed == 1048576)

		acpi_speed = 1000000;

	/*

	 * Find bus speed from the "clock-frequency" device property, ACPI

	 * or by using fast mode if neither is set.
@@ -319,7 +322,8 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) 
	if (dev->clk_freq != 100000 && dev->clk_freq != 400000

	    && dev->clk_freq != 1000000 && dev->clk_freq != 3400000) {

		dev_err(&pdev->dev,

			"Only 100kHz, 400kHz, 1MHz and 3.4MHz supported");

			"%d Hz is unsupported, only 100kHz, 400kHz, 1MHz and 3.4MHz are supported\n",

			dev->clk_freq);

		ret = -EINVAL;

		goto exit_reset;

	}

drivers/i2c/i2c-core-acpi.c

+15 −4
Original line number Diff line number Diff line
@@ -230,6 +230,16 @@ void i2c_acpi_register_devices(struct i2c_adapter *adap) 
		dev_warn(&adap->dev, "failed to enumerate I2C slaves\n");

}



const struct acpi_device_id *

i2c_acpi_match_device(const struct acpi_device_id *matches,

		      struct i2c_client *client)

{

	if (!(client && matches))

		return NULL;



	return acpi_match_device(matches, &client->dev);

}



static acpi_status i2c_acpi_lookup_speed(acpi_handle handle, u32 level,

					   void *data, void **return_value)

{
@@ -289,7 +299,7 @@ u32 i2c_acpi_find_bus_speed(struct device *dev) 
}

EXPORT_SYMBOL_GPL(i2c_acpi_find_bus_speed);



static int i2c_acpi_match_adapter(struct device *dev, void *data)

static int i2c_acpi_find_match_adapter(struct device *dev, void *data)

{

	struct i2c_adapter *adapter = i2c_verify_adapter(dev);
@@ -299,7 +309,7 @@ static int i2c_acpi_match_adapter(struct device *dev, void *data) 
	return ACPI_HANDLE(dev) == (acpi_handle)data;

}



static int i2c_acpi_match_device(struct device *dev, void *data)

static int i2c_acpi_find_match_device(struct device *dev, void *data)

{

	return ACPI_COMPANION(dev) == data;

}
@@ -309,7 +319,7 @@ static struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) 
	struct device *dev;



	dev = bus_find_device(&i2c_bus_type, NULL, handle,

			      i2c_acpi_match_adapter);

			      i2c_acpi_find_match_adapter);

	return dev ? i2c_verify_adapter(dev) : NULL;

}
@@ -317,7 +327,8 @@ static struct i2c_client *i2c_acpi_find_client_by_adev(struct acpi_device *adev) 
{

	struct device *dev;



	dev = bus_find_device(&i2c_bus_type, NULL, adev, i2c_acpi_match_device);

	dev = bus_find_device(&i2c_bus_type, NULL, adev,

			      i2c_acpi_find_match_device);

	return dev ? i2c_verify_client(dev) : NULL;

}

drivers/i2c/i2c-core-base.c

+1 −0
Original line number Diff line number Diff line
@@ -357,6 +357,7 @@ static int i2c_device_probe(struct device *dev) 
	 * Tree match table entry is supplied for the probing device.

	 */

	if (!driver->id_table &&

	    !i2c_acpi_match_device(dev->driver->acpi_match_table, client) &&

	    !i2c_of_match_device(dev->driver->of_match_table, client))

		return -ENODEV;

drivers/i2c/i2c-core.h

+9 −0
Original line number Diff line number Diff line
@@ -31,9 +31,18 @@ int i2c_check_addr_validity(unsigned addr, unsigned short flags); 
int i2c_check_7bit_addr_validity_strict(unsigned short addr);



#ifdef CONFIG_ACPI

const struct acpi_device_id *

i2c_acpi_match_device(const struct acpi_device_id *matches,

		      struct i2c_client *client);

void i2c_acpi_register_devices(struct i2c_adapter *adap);

#else /* CONFIG_ACPI */

static inline void i2c_acpi_register_devices(struct i2c_adapter *adap) { }

static inline const struct acpi_device_id *

i2c_acpi_match_device(const struct acpi_device_id *matches,

		      struct i2c_client *client)

{

	return NULL;

}

#endif /* CONFIG_ACPI */

extern struct notifier_block i2c_acpi_notifier;