diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-04 10:57:43 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-04 10:57:43 -0800 |
commit | 4141cf676b9e345d3ddeb1710dd3156a09c50244 (patch) | |
tree | 4b2b6249e99efdd47eafa5780f106d593f64708b /arch | |
parent | 3462ac57033e79a87dbae2497773f22b9c536fbc (diff) | |
parent | e38c85644e11c6dc5a39305c96b617f63403423d (diff) |
Merge branch 'i2c/for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"I2C has the following changes for you:
- new flag to mark DMA safe buffers in i2c_msg. Also, some
infrastructure around it. And docs.
- huge refactoring of the at24 driver led by the new maintainer
Bartosz
- update I2C bus recovery to send STOP after recovery
- conversion from gpio to gpiod for I2C bus recovery
- adding a fault-injector to the i2c-gpio driver
- lots of small driver improvements, and bigger ones to
i2c-sh_mobile"
* 'i2c/for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (99 commits)
i2c: mv64xxx: Add myself as maintainer for this driver
i2c: mv64xxx: Fix clock resource by adding an optional bus clock
i2c: mv64xxx: Remove useless test before clk_disable_unprepare
i2c: mxs: use true and false for boolean values
i2c: meson: update doc description to fix build warnings
i2c: meson: add configurable divider factors
dt-bindings: i2c: update documentation for the Meson-AXG
i2c: imx-lpi2c: add runtime pm support
i2c: rcar: fix some trivial typos in comments
i2c: davinci: fix the cpufreq transition
i2c: rk3x: add proper kerneldoc header
i2c: rk3x: account for const type of of_device_id.data
i2c: acorn: remove outdated path from file header
i2c: acorn: add MODULE_LICENSE tag
i2c: rcar: implement bus recovery
i2c: send STOP after successful bus recovery
i2c: ensure SDA is released in recovery if SDA is controllable
i2c: add 'set_sda' to bus_recovery_info
i2c: add identifier in declarations for i2c_bus_recovery
i2c: make kerneldoc about bus recovery more precise
...
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/mach-davinci/board-dm355-evm.c | 15 | ||||
-rw-r--r-- | arch/arm/mach-davinci/board-dm644x-evm.c | 15 |
2 files changed, 26 insertions, 4 deletions
diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c index 62e7bc3018f0..e457f299cd44 100644 --- a/arch/arm/mach-davinci/board-dm355-evm.c +++ b/arch/arm/mach-davinci/board-dm355-evm.c @@ -17,6 +17,7 @@ #include <linux/mtd/rawnand.h> #include <linux/i2c.h> #include <linux/gpio.h> +#include <linux/gpio/machine.h> #include <linux/clk.h> #include <linux/videodev2.h> #include <media/i2c/tvp514x.h> @@ -108,11 +109,20 @@ static struct platform_device davinci_nand_device = { }, }; +static struct gpiod_lookup_table i2c_recovery_gpiod_table = { + .dev_id = "i2c_davinci", + .table = { + GPIO_LOOKUP("davinci_gpio", 15, "sda", + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), + GPIO_LOOKUP("davinci_gpio", 14, "scl", + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), + }, +}; + static struct davinci_i2c_platform_data i2c_pdata = { .bus_freq = 400 /* kHz */, .bus_delay = 0 /* usec */, - .sda_pin = 15, - .scl_pin = 14, + .gpio_recovery = true, }; static int dm355evm_mmc_gpios = -EINVAL; @@ -141,6 +151,7 @@ static struct i2c_board_info dm355evm_i2c_info[] = { static void __init evm_init_i2c(void) { + gpiod_add_lookup_table(&i2c_recovery_gpiod_table); davinci_init_i2c(&i2c_pdata); gpio_request(5, "dm355evm_msp"); diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c index b07c9b18d427..85e6fb33b1ee 100644 --- a/arch/arm/mach-davinci/board-dm644x-evm.c +++ b/arch/arm/mach-davinci/board-dm644x-evm.c @@ -13,6 +13,7 @@ #include <linux/dma-mapping.h> #include <linux/platform_device.h> #include <linux/gpio.h> +#include <linux/gpio/machine.h> #include <linux/i2c.h> #include <linux/platform_data/pcf857x.h> #include <linux/platform_data/at24.h> @@ -595,18 +596,28 @@ static struct i2c_board_info __initdata i2c_info[] = { }, }; +static struct gpiod_lookup_table i2c_recovery_gpiod_table = { + .dev_id = "i2c_davinci", + .table = { + GPIO_LOOKUP("davinci_gpio", 44, "sda", + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), + GPIO_LOOKUP("davinci_gpio", 43, "scl", + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), + }, +}; + /* The msp430 uses a slow bitbanged I2C implementation (ergo 20 KHz), * which requires 100 usec of idle bus after i2c writes sent to it. */ static struct davinci_i2c_platform_data i2c_pdata = { .bus_freq = 20 /* kHz */, .bus_delay = 100 /* usec */, - .sda_pin = 44, - .scl_pin = 43, + .gpio_recovery = true, }; static void __init evm_init_i2c(void) { + gpiod_add_lookup_table(&i2c_recovery_gpiod_table); davinci_init_i2c(&i2c_pdata); i2c_add_driver(&dm6446evm_msp_driver); i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info)); |