diff options
Diffstat (limited to 'arch/arm/plat-iop/i2c.c')
| -rw-r--r-- | arch/arm/plat-iop/i2c.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/plat-iop/i2c.c b/arch/arm/plat-iop/i2c.c index 88215ad031a2..bac20f7f5f8a 100644 --- a/arch/arm/plat-iop/i2c.c +++ b/arch/arm/plat-iop/i2c.c @@ -19,6 +19,7 @@ #include <linux/tty.h> #include <linux/serial_core.h> #include <linux/io.h> +#include <linux/gpio/machine.h> #include <asm/pgtable.h> #include <asm/page.h> #include <asm/mach/map.h> @@ -37,6 +38,29 @@ #define IRQ_IOP3XX_I2C_1 IRQ_IOP33X_I2C_1 #endif +/* + * Each of the I2C busses have corresponding GPIO lines, and the driver + * need to access these directly to drive the bus low at times. + */ + +struct gpiod_lookup_table iop3xx_i2c0_gpio_lookup = { + .dev_id = "IOP3xx-I2C.0", + .table = { + GPIO_LOOKUP("gpio-iop", 7, "scl", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("gpio-iop", 6, "sda", GPIO_ACTIVE_HIGH), + { } + }, +}; + +struct gpiod_lookup_table iop3xx_i2c1_gpio_lookup = { + .dev_id = "IOP3xx-I2C.1", + .table = { + GPIO_LOOKUP("gpio-iop", 5, "scl", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("gpio-iop", 4, "sda", GPIO_ACTIVE_HIGH), + { } + }, +}; + static struct resource iop3xx_i2c0_resources[] = { [0] = { .start = 0xfffff680, |