diff options
| -rw-r--r-- | include/asm-cris/etraxgpio.h | 112 |
1 files changed, 94 insertions, 18 deletions
diff --git a/include/asm-cris/etraxgpio.h b/include/asm-cris/etraxgpio.h index 5d0028dba7c6..9fdb206f318d 100644 --- a/include/asm-cris/etraxgpio.h +++ b/include/asm-cris/etraxgpio.h @@ -1,25 +1,34 @@ -/* $Id: etraxgpio.h,v 1.8 2002/06/17 15:53:07 johana Exp $ */ /* * The following devices are accessable using this driver using - * GPIO_MAJOR (120) and a couple of minor numbers: - * For ETRAX 100LX (ARCH_V10): + * GPIO_MAJOR (120) and a couple of minor numbers. + * + * For ETRAX 100LX (CONFIG_ETRAX_ARCH_V10): * /dev/gpioa minor 0, 8 bit GPIO, each bit can change direction * /dev/gpiob minor 1, 8 bit GPIO, each bit can change direction * /dev/leds minor 2, Access to leds depending on kernelconfig * /dev/gpiog minor 3 - g0dir, g8_15dir, g16_23dir, g24 dir configurable in R_GEN_CONFIG - g1-g7 and g25-g31 is both input and outputs but on different pins - Also note that some bits change pins depending on what interfaces - are enabled. + * g0dir, g8_15dir, g16_23dir, g24 dir configurable in R_GEN_CONFIG + * g1-g7 and g25-g31 is both input and outputs but on different pins + * Also note that some bits change pins depending on what interfaces + * are enabled. * + * For ETRAX FS (CONFIG_ETRAXFS): + * /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/gpioe minor 5, 18 bit GPIO, each bit can change direction + * /dev/leds minor 2, Access to leds depending on kernelconfig * - * For ETRAX FS (ARCH_V32): + * 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 2, 18 bit GPIO, each bit can change direction - * /dev/gpiod minor 3, 18 bit GPIO, each bit can change direction - * /dev/gpioe minor 4, 18 bit GPIO, each bit can change direction - * /dev/leds minor 5, Access to leds depending on kernelconfig + * /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/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 * */ #ifndef _ASM_ETRAXGPIO_H @@ -34,7 +43,8 @@ #define GPIO_MINOR_G 3 #define GPIO_MINOR_LAST 3 #endif -#ifdef CONFIG_ETRAX_ARCH_V32 + +#ifdef CONFIG_ETRAXFS #define ETRAXGPIO_IOCTYPE 43 #define GPIO_MINOR_A 0 #define GPIO_MINOR_B 1 @@ -42,8 +52,32 @@ #define GPIO_MINOR_C 3 #define GPIO_MINOR_D 4 #define GPIO_MINOR_E 5 +#ifdef CONFIG_ETRAX_VIRTUAL_GPIO +#define GPIO_MINOR_V 6 +#define GPIO_MINOR_LAST 6 +#else #define GPIO_MINOR_LAST 5 #endif +#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 +#define GPIO_MINOR_C 3 +#define GPIO_MINOR_D 4 +#ifdef CONFIG_ETRAX_VIRTUAL_GPIO +#define GPIO_MINOR_V 6 +#define GPIO_MINOR_LAST 6 +#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 +#endif /* supported ioctl _IOC_NR's */ @@ -63,7 +97,7 @@ /* GPIO direction ioctl's */ #define IO_READDIR 0x8 /* Read direction 0=input 1=output (obsolete) */ -#define IO_SETINPUT 0x9 /* Set direction for bits set, 0=unchanged 1=input, +#define IO_SETINPUT 0x9 /* Set direction for bits set, 0=unchanged 1=input, returns mask with current inputs (obsolete) */ #define IO_SETOUTPUT 0xA /* Set direction for bits set, 0=unchanged 1=output, returns mask with current outputs (obsolete)*/ @@ -77,13 +111,13 @@ #define IO_GET_PWR_BT 0xE /* Bit toggling in driver settings */ -/* bit set in low byte0 is CLK mask (0x00FF), - bit set in byte1 is DATA mask (0xFF00) +/* bit set in low byte0 is CLK mask (0x00FF), + bit set in byte1 is DATA mask (0xFF00) msb, data_mask[7:0] , clk_mask[7:0] */ -#define IO_CFG_WRITE_MODE 0xF +#define IO_CFG_WRITE_MODE 0xF #define IO_CFG_WRITE_MODE_VALUE(msb, data_mask, clk_mask) \ - ( (((msb)&1) << 16) | (((data_mask) &0xFF) << 8) | ((clk_mask) & 0xFF) ) + ( (((msb)&1) << 16) | (((data_mask) &0xFF) << 8) | ((clk_mask) & 0xFF) ) /* The following 4 ioctl's take a pointer as argument and handles * 32 bit ports (port G) properly. @@ -98,6 +132,48 @@ * *arg updated with current output pins. */ +/* The following ioctl's are applicable to the PWM channels only */ + +#define IO_PWM_SET_MODE 0x20 + +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 */ +}; + +struct io_pwm_set_mode { + enum io_pwm_mode mode; +}; + +/* Only for mode PWM_VARFREQ. Period lo/high set in increments of 10ns + * from 10ns (value = 0) to 81920ns (value = 8191) + * (Resulting frequencies range from 50 MHz (10ns + 10ns) down to + * 6.1 kHz (81920ns + 81920ns) at 50% duty cycle, to 12.2 kHz at min/max duty + * cycle (81920 + 10ns or 10ns + 81920ns, respectively).) + */ +#define IO_PWM_SET_PERIOD 0x21 + +struct io_pwm_set_period { + int lo; /* 0..8191 */ + int hi; /* 0..8191 */ +}; + +/* Only for modes PWM_STANDARD and PWM_FAST. + * For PWM_STANDARD, set duty cycle of 390 kHz PWM output signal, from + * 0 (value = 0) to 255/256 (value = 255). + * For PWM_FAST, set duty cycle of PWM output signal from + * 0% (value = 0) to 100% (value = 255). Output signal in this mode + * is a 10ns pulse surrounded by a high or low level depending on duty + * cycle (except for 0% and 100% which result in a constant output). + * Resulting output frequency varies from 50 MHz at 50% duty cycle, + * down to 390 kHz at min/max duty cycle. + */ +#define IO_PWM_SET_DUTY 0x22 +struct io_pwm_set_duty { + int duty; /* 0..255 */ +}; #endif |