CRIS: Better ARTPEC-3 support for gpio
Add PWM support, correct comment for ARTPEC-3. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
This commit is contained in:
Jesper Nilsson
Родитель
97a644461d
Коммит
4f248d1cea
|
|
@ -21,31 +21,35 @@
|
|||
* /dev/leds minor 2, Access to leds depending on kernelconfig
|
||||
*
|
||||
* For ARTPEC-3 (CONFIG_CRIS_MACH_ARTPEC3):
|
||||
* /dev/gpioa minor 0, 8 bit GPIO, each bit can change direction
|
||||
* /dev/gpiob minor 1, 18 bit GPIO, each bit can change direction
|
||||
* /dev/gpioc minor 3, 18 bit GPIO, each bit can change direction
|
||||
* /dev/gpiod minor 4, 18 bit GPIO, each bit can change direction
|
||||
* /dev/gpioa minor 0, 32 bit GPIO, each bit can change direction
|
||||
* /dev/gpiob minor 1, 32 bit GPIO, each bit can change direction
|
||||
* /dev/gpioc minor 3, 16 bit GPIO, each bit can change direction
|
||||
* /dev/gpiod minor 4, 32 bit GPIO, input only
|
||||
* /dev/leds minor 2, Access to leds depending on kernelconfig
|
||||
* /dev/pwm0 minor 16, PWM channel 0 on PA30
|
||||
* /dev/pwm1 minor 17, PWM channel 1 on PA31
|
||||
* /dev/pwm2 minor 18, PWM channel 2 on PB26
|
||||
* /dev/ppwm minor 19, PPWM channel
|
||||
*
|
||||
*/
|
||||
#ifndef _ASM_ETRAXGPIO_H
|
||||
#define _ASM_ETRAXGPIO_H
|
||||
|
||||
#define GPIO_MINOR_FIRST 0
|
||||
|
||||
#define ETRAXGPIO_IOCTYPE 43
|
||||
|
||||
/* etraxgpio _IOC_TYPE, bits 8 to 15 in ioctl cmd */
|
||||
#ifdef CONFIG_ETRAX_ARCH_V10
|
||||
#define ETRAXGPIO_IOCTYPE 43
|
||||
#define GPIO_MINOR_A 0
|
||||
#define GPIO_MINOR_B 1
|
||||
#define GPIO_MINOR_LEDS 2
|
||||
#define GPIO_MINOR_G 3
|
||||
#define GPIO_MINOR_LAST 3
|
||||
#define GPIO_MINOR_LAST_REAL GPIO_MINOR_LAST
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_ETRAXFS
|
||||
#define ETRAXGPIO_IOCTYPE 43
|
||||
#define GPIO_MINOR_A 0
|
||||
#define GPIO_MINOR_B 1
|
||||
#define GPIO_MINOR_LEDS 2
|
||||
|
|
@ -58,10 +62,10 @@
|
|||
#else
|
||||
#define GPIO_MINOR_LAST 5
|
||||
#endif
|
||||
#define GPIO_MINOR_LAST_REAL GPIO_MINOR_LAST
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_CRIS_MACH_ARTPEC3
|
||||
#define ETRAXGPIO_IOCTYPE 43
|
||||
#define GPIO_MINOR_A 0
|
||||
#define GPIO_MINOR_B 1
|
||||
#define GPIO_MINOR_LEDS 2
|
||||
|
|
@ -73,12 +77,17 @@
|
|||
#else
|
||||
#define GPIO_MINOR_LAST 4
|
||||
#endif
|
||||
#define GPIO_MINOR_PWM0 16
|
||||
#define GPIO_MINOR_PWM1 17
|
||||
#define GPIO_MINOR_PWM2 18
|
||||
#define GPIO_MINOR_LAST_PWM GPIO_MINOR_PWM2
|
||||
#define GPIO_MINOR_FIRST_PWM 16
|
||||
#define GPIO_MINOR_PWM0 (GPIO_MINOR_FIRST_PWM+0)
|
||||
#define GPIO_MINOR_PWM1 (GPIO_MINOR_FIRST_PWM+1)
|
||||
#define GPIO_MINOR_PWM2 (GPIO_MINOR_FIRST_PWM+2)
|
||||
#define GPIO_MINOR_PPWM (GPIO_MINOR_FIRST_PWM+3)
|
||||
#define GPIO_MINOR_LAST_PWM GPIO_MINOR_PPWM
|
||||
#define GPIO_MINOR_LAST_REAL GPIO_MINOR_LAST_PWM
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
/* supported ioctl _IOC_NR's */
|
||||
|
||||
#define IO_READBITS 0x1 /* read and return current port bits (obsolete) */
|
||||
|
|
@ -125,12 +134,10 @@
|
|||
*/
|
||||
#define IO_READ_INBITS 0x10 /* *arg is result of reading the input pins */
|
||||
#define IO_READ_OUTBITS 0x11 /* *arg is result of reading the output shadow */
|
||||
#define IO_SETGET_INPUT 0x12 /* bits set in *arg is set to input,
|
||||
* *arg updated with current input pins.
|
||||
*/
|
||||
#define IO_SETGET_OUTPUT 0x13 /* bits set in *arg is set to output,
|
||||
* *arg updated with current output pins.
|
||||
*/
|
||||
#define IO_SETGET_INPUT 0x12 /* bits set in *arg is set to input, */
|
||||
/* *arg updated with current input pins. */
|
||||
#define IO_SETGET_OUTPUT 0x13 /* bits set in *arg is set to output, */
|
||||
/* *arg updated with current output pins. */
|
||||
|
||||
/* The following ioctl's are applicable to the PWM channels only */
|
||||
|
||||
|
|
@ -140,7 +147,8 @@ enum io_pwm_mode {
|
|||
PWM_OFF = 0, /* disabled, deallocated */
|
||||
PWM_STANDARD = 1, /* 390 kHz, duty cycle 0..255/256 */
|
||||
PWM_FAST = 2, /* variable freq, w/ 10ns active pulse len */
|
||||
PWM_VARFREQ = 3 /* individually configurable high/low periods */
|
||||
PWM_VARFREQ = 3, /* individually configurable high/low periods */
|
||||
PWM_SOFT = 4 /* software generated */
|
||||
};
|
||||
|
||||
struct io_pwm_set_mode {
|
||||
|
|
@ -176,4 +184,56 @@ struct io_pwm_set_duty {
|
|||
int duty; /* 0..255 */
|
||||
};
|
||||
|
||||
/* Returns information about the latest PWM pulse.
|
||||
* lo: Length of the latest low period, in units of 10ns.
|
||||
* hi: Length of the latest high period, in units of 10ns.
|
||||
* cnt: Time since last detected edge, in units of 10ns.
|
||||
*
|
||||
* The input source to PWM is decied by IO_PWM_SET_INPUT_SRC.
|
||||
*
|
||||
* NOTE: All PWM devices is connected to the same input source.
|
||||
*/
|
||||
#define IO_PWM_GET_PERIOD 0x23
|
||||
|
||||
struct io_pwm_get_period {
|
||||
unsigned int lo;
|
||||
unsigned int hi;
|
||||
unsigned int cnt;
|
||||
};
|
||||
|
||||
/* Sets the input source for the PWM input. For the src value see the
|
||||
* register description for gio:rw_pwm_in_cfg.
|
||||
*
|
||||
* NOTE: All PWM devices is connected to the same input source.
|
||||
*/
|
||||
#define IO_PWM_SET_INPUT_SRC 0x24
|
||||
struct io_pwm_set_input_src {
|
||||
unsigned int src; /* 0..7 */
|
||||
};
|
||||
|
||||
/* Sets the duty cycles in steps of 1/256, 0 = 0%, 255 = 100% duty cycle */
|
||||
#define IO_PPWM_SET_DUTY 0x25
|
||||
|
||||
struct io_ppwm_set_duty {
|
||||
int duty; /* 0..255 */
|
||||
};
|
||||
|
||||
/* Configuraton struct for the IO_PWMCLK_SET_CONFIG ioctl to configure
|
||||
* PWM capable gpio pins:
|
||||
*/
|
||||
#define IO_PWMCLK_SETGET_CONFIG 0x26
|
||||
struct gpio_pwmclk_conf {
|
||||
unsigned int gpiopin; /* The pin number based on the opened device */
|
||||
unsigned int baseclk; /* The base clock to use, or sw will select one close*/
|
||||
unsigned int low; /* The number of low periods of the baseclk */
|
||||
unsigned int high; /* The number of high periods of the baseclk */
|
||||
};
|
||||
|
||||
/* Examples:
|
||||
* To get a symmetric 12 MHz clock without knowing anything about the hardware:
|
||||
* baseclk = 12000000, low = 0, high = 0
|
||||
* To just get info of current setting:
|
||||
* baseclk = 0, low = 0, high = 0, the values will be updated by driver.
|
||||
*/
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче