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| author | Linus Walleij <linus.walleij@linaro.org> | 2017-12-20 13:17:49 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2017-12-31 00:09:39 +0100 |
| commit | e53537653791b4aaa9ec88a9eb5fd187d44ff6ac (patch) | |
| tree | a812a43d7b823d3e7ff33669ba2d67a848c0ff65 /arch/arm | |
| parent | 7d42762d8cdff2974c3cfddeb480d467018f55fe (diff) | |
| download | linux-e53537653791b4aaa9ec88a9eb5fd187d44ff6ac.tar.gz linux-e53537653791b4aaa9ec88a9eb5fd187d44ff6ac.tar.bz2 linux-e53537653791b4aaa9ec88a9eb5fd187d44ff6ac.zip | |
i2c/ARM: davinci: Deep refactoring of I2C recovery
Alter the DaVinci GPIO recovery fetch to use descriptors
all the way down into the board files.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'arch/arm')
| -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)); |