From: Linus Torvalds Date: Wed, 9 Aug 2017 20:21:28 +0000 (-0700) Subject: Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa... X-Git-Tag: v4.13-rc5~24 X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-linux.git;a=commitdiff_plain;h=358f8c26b15daf16859cb3bd33db7e601707200e;hp=31cf92f3dda8ecf4ce19761847cad6e1ffa144e1 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 --- diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index 1006b230b236..65fa29591d21 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -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 diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 2ea6d0d25a01..143a8fd582b4 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -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; } diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c index 4842ec3a5451..a9126b3cda61 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -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; } diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index c89dac7fd2e7..12822a4b8f8f 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -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; diff --git a/drivers/i2c/i2c-core.h b/drivers/i2c/i2c-core.h index 3b63f5e5b89c..3d3d9bf02101 100644 --- a/drivers/i2c/i2c-core.h +++ b/drivers/i2c/i2c-core.h @@ -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; diff --git a/drivers/i2c/muxes/Kconfig b/drivers/i2c/muxes/Kconfig index 2c64d0e0740f..17121329bb79 100644 --- a/drivers/i2c/muxes/Kconfig +++ b/drivers/i2c/muxes/Kconfig @@ -83,7 +83,7 @@ config I2C_MUX_PINCTRL different sets of pins at run-time. This driver can also be built as a module. If so, the module will be - called pinctrl-i2cmux. + called i2c-mux-pinctrl. config I2C_MUX_REG tristate "Register-based I2C multiplexer" diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 00ca5b86a753..d501d3956f13 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -689,7 +689,8 @@ i2c_unlock_adapter(struct i2c_adapter *adapter) #define I2C_CLASS_HWMON (1<<0) /* lm_sensors, ... */ #define I2C_CLASS_DDC (1<<3) /* DDC bus on graphics adapters */ #define I2C_CLASS_SPD (1<<7) /* Memory modules */ -#define I2C_CLASS_DEPRECATED (1<<8) /* Warn users that adapter will stop using classes */ +/* Warn users that the adapter doesn't support classes anymore */ +#define I2C_CLASS_DEPRECATED (1<<8) /* Internal numbers to terminate lists */ #define I2C_CLIENT_END 0xfffeU