diff options
Diffstat (limited to 'bsps/arm/beagle/include/bsp/pwmss.h')
-rw-r--r-- | bsps/arm/beagle/include/bsp/pwmss.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/bsps/arm/beagle/include/bsp/pwmss.h b/bsps/arm/beagle/include/bsp/pwmss.h new file mode 100644 index 0000000000..3a9dcbb70a --- /dev/null +++ b/bsps/arm/beagle/include/bsp/pwmss.h @@ -0,0 +1,54 @@ +/** + * @file + * + * @ingroup arm_beagle + * + * @brief Shared PWMSS module functions used by PWM, eQEP and eCAP (when added). + */ + +/** + * Copyright (c) 2020 James Fitzsimons <james.fitzsimons@gmail.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + *. + */ + +#ifndef LIBBSP_ARM_BEAGLE_PWMSS_H +#define LIBBSP_ARM_BEAGLE_PWMSS_H + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +/* The following definitions are bitmasks for the clk control registers for + * the PWMSS module clocks. All three modules have the same clock control + * hence the EPMSSx to signify these values are consistent across all + * EPWMSS instances. */ +#define AM335X_CM_PER_EPWMSSx_CLKCTRL_MODULEMODE_ENABLE (0x2u) +#define AM335X_CM_PER_EPWMSSx_CLKCTRL_MODULEMODE (0x00000003u) +#define AM335X_CM_PER_EPWMSSx_CLKCTRL_IDLEST_FUNC (0x0u) +#define AM335X_CM_PER_EPWMSSx_CLKCTRL_IDLEST_SHIFT (0x00000010u) +#define AM335X_CM_PER_EPWMSSx_CLKCTRL_IDLEST (0x00030000u) + +/** + * @brief The set of possible PWM subsystem module + * + * Enumerated type to define various instance of pwm module. + */ +typedef enum { + BBB_PWMSS0 = 0, + BBB_PWMSS1, + BBB_PWMSS2, + BBB_PWMSS_COUNT +} BBB_PWMSS; + + +rtems_status_code pwmss_module_clk_config(BBB_PWMSS pwmss_id); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBBSP_ARM_BEAGLE_PWMSS_H */ |