-/* $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
#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
#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 */
/* 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)*/
#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.
* *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
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