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Diffstat (limited to 'Marlin/src/HAL/DUE/usb/genclk.h')
| -rw-r--r-- | Marlin/src/HAL/DUE/usb/genclk.h | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/Marlin/src/HAL/DUE/usb/genclk.h b/Marlin/src/HAL/DUE/usb/genclk.h new file mode 100644 index 0000000..cde03bc --- /dev/null +++ b/Marlin/src/HAL/DUE/usb/genclk.h @@ -0,0 +1,278 @@ +/** + * \file + * + * \brief Chip-specific generic clock management. + * + * Copyright (c) 2011-2015 Atmel Corporation. All rights reserved. + * + * \asf_license_start + * + * \page License + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * 3. The name of Atmel may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 4. This software may only be redistributed and used in connection with an + * Atmel microcontroller product. + * + * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE + * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * \asf_license_stop + * + */ +/* + * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a> + */ + +#ifndef CHIP_GENCLK_H_INCLUDED +#define CHIP_GENCLK_H_INCLUDED + +#include <osc.h> +#include <pll.h> + +/// @cond 0 +/**INDENT-OFF**/ +#ifdef __cplusplus +extern "C" { +#endif +/**INDENT-ON**/ +/// @endcond + +/** + * \weakgroup genclk_group + * @{ + */ + +//! \name Programmable Clock Identifiers (PCK) +//@{ +#define GENCLK_PCK_0 0 //!< PCK0 ID +#define GENCLK_PCK_1 1 //!< PCK1 ID +#define GENCLK_PCK_2 2 //!< PCK2 ID +//@} + +//! \name Programmable Clock Sources (PCK) +//@{ + +enum genclk_source { + GENCLK_PCK_SRC_SLCK_RC = 0, //!< Internal 32kHz RC oscillator as PCK source clock + GENCLK_PCK_SRC_SLCK_XTAL = 1, //!< External 32kHz crystal oscillator as PCK source clock + GENCLK_PCK_SRC_SLCK_BYPASS = 2, //!< External 32kHz bypass oscillator as PCK source clock + GENCLK_PCK_SRC_MAINCK_4M_RC = 3, //!< Internal 4MHz RC oscillator as PCK source clock + GENCLK_PCK_SRC_MAINCK_8M_RC = 4, //!< Internal 8MHz RC oscillator as PCK source clock + GENCLK_PCK_SRC_MAINCK_12M_RC = 5, //!< Internal 12MHz RC oscillator as PCK source clock + GENCLK_PCK_SRC_MAINCK_XTAL = 6, //!< External crystal oscillator as PCK source clock + GENCLK_PCK_SRC_MAINCK_BYPASS = 7, //!< External bypass oscillator as PCK source clock + GENCLK_PCK_SRC_PLLACK = 8, //!< Use PLLACK as PCK source clock + GENCLK_PCK_SRC_PLLBCK = 9, //!< Use PLLBCK as PCK source clock + GENCLK_PCK_SRC_MCK = 10, //!< Use Master Clk as PCK source clock +}; + +//@} + +//! \name Programmable Clock Prescalers (PCK) +//@{ + +enum genclk_divider { + GENCLK_PCK_PRES_1 = PMC_PCK_PRES_CLK_1, //!< Set PCK clock prescaler to 1 + GENCLK_PCK_PRES_2 = PMC_PCK_PRES_CLK_2, //!< Set PCK clock prescaler to 2 + GENCLK_PCK_PRES_4 = PMC_PCK_PRES_CLK_4, //!< Set PCK clock prescaler to 4 + GENCLK_PCK_PRES_8 = PMC_PCK_PRES_CLK_8, //!< Set PCK clock prescaler to 8 + GENCLK_PCK_PRES_16 = PMC_PCK_PRES_CLK_16, //!< Set PCK clock prescaler to 16 + GENCLK_PCK_PRES_32 = PMC_PCK_PRES_CLK_32, //!< Set PCK clock prescaler to 32 + GENCLK_PCK_PRES_64 = PMC_PCK_PRES_CLK_64, //!< Set PCK clock prescaler to 64 +}; + +//@} + +struct genclk_config { + uint32_t ctrl; +}; + +static inline void genclk_config_defaults(struct genclk_config *p_cfg, + uint32_t ul_id) +{ + ul_id = ul_id; + p_cfg->ctrl = 0; +} + +static inline void genclk_config_read(struct genclk_config *p_cfg, + uint32_t ul_id) +{ + p_cfg->ctrl = PMC->PMC_PCK[ul_id]; +} + +static inline void genclk_config_write(const struct genclk_config *p_cfg, + uint32_t ul_id) +{ + PMC->PMC_PCK[ul_id] = p_cfg->ctrl; +} + +//! \name Programmable Clock Source and Prescaler configuration +//@{ + +static inline void genclk_config_set_source(struct genclk_config *p_cfg, + enum genclk_source e_src) +{ + p_cfg->ctrl &= (~PMC_PCK_CSS_Msk); + + switch (e_src) { + case GENCLK_PCK_SRC_SLCK_RC: + case GENCLK_PCK_SRC_SLCK_XTAL: + case GENCLK_PCK_SRC_SLCK_BYPASS: + p_cfg->ctrl |= (PMC_PCK_CSS_SLOW_CLK); + break; + + case GENCLK_PCK_SRC_MAINCK_4M_RC: + case GENCLK_PCK_SRC_MAINCK_8M_RC: + case GENCLK_PCK_SRC_MAINCK_12M_RC: + case GENCLK_PCK_SRC_MAINCK_XTAL: + case GENCLK_PCK_SRC_MAINCK_BYPASS: + p_cfg->ctrl |= (PMC_PCK_CSS_MAIN_CLK); + break; + + case GENCLK_PCK_SRC_PLLACK: + p_cfg->ctrl |= (PMC_PCK_CSS_PLLA_CLK); + break; + + case GENCLK_PCK_SRC_PLLBCK: + p_cfg->ctrl |= (PMC_PCK_CSS_UPLL_CLK); + break; + + case GENCLK_PCK_SRC_MCK: + p_cfg->ctrl |= (PMC_PCK_CSS_MCK); + break; + } +} + +static inline void genclk_config_set_divider(struct genclk_config *p_cfg, + uint32_t e_divider) +{ + p_cfg->ctrl &= ~PMC_PCK_PRES_Msk; + p_cfg->ctrl |= e_divider; +} + +//@} + +static inline void genclk_enable(const struct genclk_config *p_cfg, + uint32_t ul_id) +{ + PMC->PMC_PCK[ul_id] = p_cfg->ctrl; + pmc_enable_pck(ul_id); +} + +static inline void genclk_disable(uint32_t ul_id) +{ + pmc_disable_pck(ul_id); +} + +static inline void genclk_enable_source(enum genclk_source e_src) +{ + switch (e_src) { + case GENCLK_PCK_SRC_SLCK_RC: + if (!osc_is_ready(OSC_SLCK_32K_RC)) { + osc_enable(OSC_SLCK_32K_RC); + osc_wait_ready(OSC_SLCK_32K_RC); + } + break; + + case GENCLK_PCK_SRC_SLCK_XTAL: + if (!osc_is_ready(OSC_SLCK_32K_XTAL)) { + osc_enable(OSC_SLCK_32K_XTAL); + osc_wait_ready(OSC_SLCK_32K_XTAL); + } + break; + + case GENCLK_PCK_SRC_SLCK_BYPASS: + if (!osc_is_ready(OSC_SLCK_32K_BYPASS)) { + osc_enable(OSC_SLCK_32K_BYPASS); + osc_wait_ready(OSC_SLCK_32K_BYPASS); + } + break; + + case GENCLK_PCK_SRC_MAINCK_4M_RC: + if (!osc_is_ready(OSC_MAINCK_4M_RC)) { + osc_enable(OSC_MAINCK_4M_RC); + osc_wait_ready(OSC_MAINCK_4M_RC); + } + break; + + case GENCLK_PCK_SRC_MAINCK_8M_RC: + if (!osc_is_ready(OSC_MAINCK_8M_RC)) { + osc_enable(OSC_MAINCK_8M_RC); + osc_wait_ready(OSC_MAINCK_8M_RC); + } + break; + + case GENCLK_PCK_SRC_MAINCK_12M_RC: + if (!osc_is_ready(OSC_MAINCK_12M_RC)) { + osc_enable(OSC_MAINCK_12M_RC); + osc_wait_ready(OSC_MAINCK_12M_RC); + } + break; + + case GENCLK_PCK_SRC_MAINCK_XTAL: + if (!osc_is_ready(OSC_MAINCK_XTAL)) { + osc_enable(OSC_MAINCK_XTAL); + osc_wait_ready(OSC_MAINCK_XTAL); + } + break; + + case GENCLK_PCK_SRC_MAINCK_BYPASS: + if (!osc_is_ready(OSC_MAINCK_BYPASS)) { + osc_enable(OSC_MAINCK_BYPASS); + osc_wait_ready(OSC_MAINCK_BYPASS); + } + break; + +#ifdef CONFIG_PLL0_SOURCE + case GENCLK_PCK_SRC_PLLACK: + pll_enable_config_defaults(0); + break; +#endif + +#ifdef CONFIG_PLL1_SOURCE + case GENCLK_PCK_SRC_PLLBCK: + pll_enable_config_defaults(1); + break; +#endif + + case GENCLK_PCK_SRC_MCK: + break; + + default: + Assert(false); + break; + } +} + +//! @} + +/// @cond 0 +/**INDENT-OFF**/ +#ifdef __cplusplus +} +#endif +/**INDENT-ON**/ +/// @endcond + +#endif /* CHIP_GENCLK_H_INCLUDED */ |