diff options
Diffstat (limited to 'arch/arm/plat-mxc')
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/iomux-mx3.h | 45 |
1 files changed, 38 insertions, 7 deletions
diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx3.h b/arch/arm/plat-mxc/include/mach/iomux-mx3.h index c9198c0aea1..4bdc4712be1 100644 --- a/arch/arm/plat-mxc/include/mach/iomux-mx3.h +++ b/arch/arm/plat-mxc/include/mach/iomux-mx3.h @@ -92,7 +92,7 @@ enum iomux_gp_func { MUX_EXTDMAREQ2_MBX_SEL = 1 << 15, MUX_TAMPER_DETECT_EN = 1 << 16, MUX_PGP_USB_4WIRE = 1 << 17, - MUX_PGB_USB_COMMON = 1 << 18, + MUX_PGP_USB_COMMON = 1 << 18, MUX_SDHC_MEMSTICK1 = 1 << 19, MUX_SDHC_MEMSTICK2 = 1 << 20, MUX_PGP_SPLL_BYP = 1 << 21, @@ -109,21 +109,44 @@ enum iomux_gp_func { }; /* - * This function enables/disables the general purpose function for a particular - * signal. + * setups a single pin: + * - reserves the pin so that it is not claimed by another driver + * - setups the iomux according to the configuration + * - if the pin is configured as a GPIO, we claim it throug kernel gpiolib + */ +int mxc_iomux_setup_pin(const unsigned int pin, const char *label); +/* + * setups mutliple pins + * convenient way to call the above function with tables */ -void iomux_config_gpr(enum iomux_gp_func , bool); +int mxc_iomux_setup_multiple_pins(unsigned int *pin_list, unsigned count, + const char *label); /* - * set the mode for a IOMUX pin. + * releases a single pin: + * - make it available for a future use by another driver + * - frees the GPIO if the pin was configured as GPIO + * - DOES NOT reconfigure the IOMUX in its reset state */ -int mxc_iomux_mode(unsigned int); +void mxc_iomux_release_pin(const unsigned int pin); +/* + * releases multiple pins + * convenvient way to call the above function with tables + */ +void mxc_iomux_release_multiple_pins(unsigned int *pin_list, int count); /* * This function enables/disables the general purpose function for a particular * signal. */ -void mxc_iomux_set_gpr(enum iomux_gp_func, bool); +void mxc_iomux_set_gpr(enum iomux_gp_func, bool en); + +/* + * This function only configures the iomux hardware. + * It is called by the setup functions and should not be called directly anymore. + * It is here visible for backward compatibility + */ +int mxc_iomux_mode(unsigned int pin_mode); #define IOMUX_PADNUM_MASK 0x1ff #define IOMUX_GPIONUM_SHIFT 9 @@ -144,6 +167,11 @@ void mxc_iomux_set_gpr(enum iomux_gp_func, bool); MXC_GPIO_IRQ_START) /* + * The number of gpio devices among the pads + */ +#define GPIO_PORT_MAX 3 + +/* * This enumeration is constructed based on the Section * "sw_pad_ctl & sw_mux_ctl details" of the MX31 IC Spec. Each enumerated * value is constructed based on the rules described above. @@ -480,6 +508,9 @@ enum iomux_pins { MX31_PIN_CAPTURE = IOMUX_PIN( 7, 327), }; +#define PIN_MAX 327 +#define NB_PORTS 12 /* NB_PINS/32, we chose 32 pins per "PORT" */ + /* * Convenience values for use with mxc_iomux_mode() * |