From ab0df36fc7db9dda0b786b909f653e279dfeb9cf Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Fri, 29 Aug 2008 21:09:49 +0200 Subject: avr32: refactor the portmux/gpio code - Separate the portmux configuration functionality from the GPIO pin control API. - Separate the controller-specific code from the chip-specific code. - Allow "ganged" port configuration (multiple pins at once). - Add more flexibility to the "canned" peripheral select functions: - Allow using more than 23 address bits, more chip selects, as well as NAND- and CF-specific pins. - Make the MACB SPEED pin optional, and choose between MII/RMII using a parameter instead of an #ifdef. - Make it possible to use other MMC slots than slot 0, and support different MMC/SDCard data bus widths. - Use more reasonable pull-up defaults; floating pins may consume a lot of power. - Get rid of some custom portmux code from the mimc200 board code. The old gpio/portmux API couldn't really handle its requirements, but the new one can. - Add documentation. The end result is slightly smaller code for all boards. Which isn't really the point, but at least it isn't any larger. This has been verified on ATSTK1002 and ATNGW100. I'd appreciate if the board maintainers could help me test this on their boards. In particular, the mimc200 port has lost a lot of code, so I'm hoping Mark can help me out. Signed-off-by: Haavard Skinnemoen Cc: Hans-Christian Egtvedt Cc: Mark Jackson Cc: Alex Raimondi Cc: Julien May Changes since v1: * Enable pullup on NWAIT * Add missing include to portmux-pio.h * Rename CONFIG_PIO2 -> CONFIG_PORTMUX_PIO to match docs --- cpu/at32ap/Makefile | 2 +- cpu/at32ap/at32ap700x/Makefile | 2 +- cpu/at32ap/at32ap700x/gpio.c | 199 --------------------------------------- cpu/at32ap/at32ap700x/portmux.c | 204 ++++++++++++++++++++++++++++++++++++++++ cpu/at32ap/pio.c | 116 ----------------------- cpu/at32ap/portmux-pio.c | 92 ++++++++++++++++++ 6 files changed, 298 insertions(+), 317 deletions(-) delete mode 100644 cpu/at32ap/at32ap700x/gpio.c create mode 100644 cpu/at32ap/at32ap700x/portmux.c delete mode 100644 cpu/at32ap/pio.c create mode 100644 cpu/at32ap/portmux-pio.c (limited to 'cpu/at32ap') diff --git a/cpu/at32ap/Makefile b/cpu/at32ap/Makefile index 33dc427..100cf3e 100644 --- a/cpu/at32ap/Makefile +++ b/cpu/at32ap/Makefile @@ -34,7 +34,7 @@ COBJS-y += hsdramc.o COBJS-y += exception.o COBJS-y += cache.o COBJS-y += interrupts.o -COBJS-y += pio.o +COBJS-$(CONFIG_PORTMUX_PIO) += portmux-pio.o SRCS := $(START-y:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y)) diff --git a/cpu/at32ap/at32ap700x/Makefile b/cpu/at32ap/at32ap700x/Makefile index 7404235..46e6ef6 100644 --- a/cpu/at32ap/at32ap700x/Makefile +++ b/cpu/at32ap/at32ap700x/Makefile @@ -24,7 +24,7 @@ include $(TOPDIR)/config.mk LIB := $(obj)lib$(SOC).a -COBJS := gpio.o clk.o +COBJS := portmux.o clk.o SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) diff --git a/cpu/at32ap/at32ap700x/gpio.c b/cpu/at32ap/at32ap700x/gpio.c deleted file mode 100644 index 56ba2f9..0000000 --- a/cpu/at32ap/at32ap700x/gpio.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * Copyright (C) 2006 Atmel Corporation - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ -#include - -#include - -#include -#include -#include - -/* - * Lots of small functions here. We depend on --gc-sections getting - * rid of the ones we don't need. - */ -void gpio_enable_ebi(void) -{ -#ifdef CFG_HSDRAMC -#ifndef CFG_SDRAM_16BIT - gpio_select_periph_A(GPIO_PIN_PE0, 0); - gpio_select_periph_A(GPIO_PIN_PE1, 0); - gpio_select_periph_A(GPIO_PIN_PE2, 0); - gpio_select_periph_A(GPIO_PIN_PE3, 0); - gpio_select_periph_A(GPIO_PIN_PE4, 0); - gpio_select_periph_A(GPIO_PIN_PE5, 0); - gpio_select_periph_A(GPIO_PIN_PE6, 0); - gpio_select_periph_A(GPIO_PIN_PE7, 0); - gpio_select_periph_A(GPIO_PIN_PE8, 0); - gpio_select_periph_A(GPIO_PIN_PE9, 0); - gpio_select_periph_A(GPIO_PIN_PE10, 0); - gpio_select_periph_A(GPIO_PIN_PE11, 0); - gpio_select_periph_A(GPIO_PIN_PE12, 0); - gpio_select_periph_A(GPIO_PIN_PE13, 0); - gpio_select_periph_A(GPIO_PIN_PE14, 0); - gpio_select_periph_A(GPIO_PIN_PE15, 0); -#endif - gpio_select_periph_A(GPIO_PIN_PE26, 0); -#endif -} - -#ifdef AT32AP700x_CHIP_HAS_USART -void gpio_enable_usart0(void) -{ - gpio_select_periph_B(GPIO_PIN_PA8, 0); - gpio_select_periph_B(GPIO_PIN_PA9, 0); -} - -void gpio_enable_usart1(void) -{ - gpio_select_periph_A(GPIO_PIN_PA17, 0); - gpio_select_periph_A(GPIO_PIN_PA18, 0); -} - -void gpio_enable_usart2(void) -{ - gpio_select_periph_B(GPIO_PIN_PB26, 0); - gpio_select_periph_B(GPIO_PIN_PB27, 0); -} - -void gpio_enable_usart3(void) -{ - gpio_select_periph_B(GPIO_PIN_PB17, 0); - gpio_select_periph_B(GPIO_PIN_PB18, 0); -} -#endif - -#ifdef AT32AP700x_CHIP_HAS_MACB -void gpio_enable_macb0(void) -{ - gpio_select_periph_A(GPIO_PIN_PC3, 0); /* TXD0 */ - gpio_select_periph_A(GPIO_PIN_PC4, 0); /* TXD1 */ - gpio_select_periph_A(GPIO_PIN_PC7, 0); /* TXEN */ - gpio_select_periph_A(GPIO_PIN_PC8, 0); /* TXCK */ - gpio_select_periph_A(GPIO_PIN_PC9, 0); /* RXD0 */ - gpio_select_periph_A(GPIO_PIN_PC10, 0); /* RXD1 */ - gpio_select_periph_A(GPIO_PIN_PC13, 0); /* RXER */ - gpio_select_periph_A(GPIO_PIN_PC15, 0); /* RXDV */ - gpio_select_periph_A(GPIO_PIN_PC16, 0); /* MDC */ - gpio_select_periph_A(GPIO_PIN_PC17, 0); /* MDIO */ -#if !defined(CONFIG_RMII) - gpio_select_periph_A(GPIO_PIN_PC0, 0); /* COL */ - gpio_select_periph_A(GPIO_PIN_PC1, 0); /* CRS */ - gpio_select_periph_A(GPIO_PIN_PC2, 0); /* TXER */ - gpio_select_periph_A(GPIO_PIN_PC5, 0); /* TXD2 */ - gpio_select_periph_A(GPIO_PIN_PC6, 0); /* TXD3 */ - gpio_select_periph_A(GPIO_PIN_PC11, 0); /* RXD2 */ - gpio_select_periph_A(GPIO_PIN_PC12, 0); /* RXD3 */ - gpio_select_periph_A(GPIO_PIN_PC14, 0); /* RXCK */ - gpio_select_periph_A(GPIO_PIN_PC18, 0); /* SPD */ -#endif -} - -void gpio_enable_macb1(void) -{ - gpio_select_periph_B(GPIO_PIN_PD13, 0); /* TXD0 */ - gpio_select_periph_B(GPIO_PIN_PD14, 0); /* TXD1 */ - gpio_select_periph_B(GPIO_PIN_PD11, 0); /* TXEN */ - gpio_select_periph_B(GPIO_PIN_PD12, 0); /* TXCK */ - gpio_select_periph_B(GPIO_PIN_PD10, 0); /* RXD0 */ - gpio_select_periph_B(GPIO_PIN_PD6, 0); /* RXD1 */ - gpio_select_periph_B(GPIO_PIN_PD5, 0); /* RXER */ - gpio_select_periph_B(GPIO_PIN_PD4, 0); /* RXDV */ - gpio_select_periph_B(GPIO_PIN_PD3, 0); /* MDC */ - gpio_select_periph_B(GPIO_PIN_PD2, 0); /* MDIO */ -#if !defined(CONFIG_RMII) - gpio_select_periph_B(GPIO_PIN_PC19, 0); /* COL */ - gpio_select_periph_B(GPIO_PIN_PC23, 0); /* CRS */ - gpio_select_periph_B(GPIO_PIN_PC26, 0); /* TXER */ - gpio_select_periph_B(GPIO_PIN_PC27, 0); /* TXD2 */ - gpio_select_periph_B(GPIO_PIN_PC28, 0); /* TXD3 */ - gpio_select_periph_B(GPIO_PIN_PC29, 0); /* RXD2 */ - gpio_select_periph_B(GPIO_PIN_PC30, 0); /* RXD3 */ - gpio_select_periph_B(GPIO_PIN_PC24, 0); /* RXCK */ - gpio_select_periph_B(GPIO_PIN_PD15, 0); /* SPD */ -#endif -} -#endif - -#ifdef AT32AP700x_CHIP_HAS_MMCI -void gpio_enable_mmci(void) -{ - gpio_select_periph_A(GPIO_PIN_PA10, 0); /* CLK */ - gpio_select_periph_A(GPIO_PIN_PA11, 0); /* CMD */ - gpio_select_periph_A(GPIO_PIN_PA12, 0); /* DATA0 */ - gpio_select_periph_A(GPIO_PIN_PA13, 0); /* DATA1 */ - gpio_select_periph_A(GPIO_PIN_PA14, 0); /* DATA2 */ - gpio_select_periph_A(GPIO_PIN_PA15, 0); /* DATA3 */ -} -#endif - -#ifdef AT32AP700x_CHIP_HAS_SPI -void gpio_enable_spi0(unsigned long cs_mask) -{ - gpio_select_periph_A(GPIO_PIN_PA0, 0); /* MISO */ - gpio_select_periph_A(GPIO_PIN_PA1, 0); /* MOSI */ - gpio_select_periph_A(GPIO_PIN_PA2, 0); /* SCK */ - - /* Set up NPCSx as GPIO outputs, initially high */ - if (cs_mask & (1 << 0)) { - gpio_set_value(GPIO_PIN_PA3, 1); - gpio_select_pio(GPIO_PIN_PA3, GPIOF_OUTPUT); - } - if (cs_mask & (1 << 1)) { - gpio_set_value(GPIO_PIN_PA4, 1); - gpio_select_pio(GPIO_PIN_PA4, GPIOF_OUTPUT); - } - if (cs_mask & (1 << 2)) { - gpio_set_value(GPIO_PIN_PA5, 1); - gpio_select_pio(GPIO_PIN_PA5, GPIOF_OUTPUT); - } - if (cs_mask & (1 << 3)) { - gpio_set_value(GPIO_PIN_PA20, 1); - gpio_select_pio(GPIO_PIN_PA20, GPIOF_OUTPUT); - } -} - -void gpio_enable_spi1(unsigned long cs_mask) -{ - gpio_select_periph_B(GPIO_PIN_PA0, 0); /* MISO */ - gpio_select_periph_B(GPIO_PIN_PB1, 0); /* MOSI */ - gpio_select_periph_B(GPIO_PIN_PB5, 0); /* SCK */ - - /* Set up NPCSx as GPIO outputs, initially high */ - if (cs_mask & (1 << 0)) { - gpio_set_value(GPIO_PIN_PB2, 1); - gpio_select_pio(GPIO_PIN_PB2, GPIOF_OUTPUT); - } - if (cs_mask & (1 << 1)) { - gpio_set_value(GPIO_PIN_PB3, 1); - gpio_select_pio(GPIO_PIN_PB3, GPIOF_OUTPUT); - } - if (cs_mask & (1 << 2)) { - gpio_set_value(GPIO_PIN_PB4, 1); - gpio_select_pio(GPIO_PIN_PB4, GPIOF_OUTPUT); - } - if (cs_mask & (1 << 3)) { - gpio_set_value(GPIO_PIN_PA27, 1); - gpio_select_pio(GPIO_PIN_PA27, GPIOF_OUTPUT); - } -} -#endif diff --git a/cpu/at32ap/at32ap700x/portmux.c b/cpu/at32ap/at32ap700x/portmux.c new file mode 100644 index 0000000..2a3b004 --- /dev/null +++ b/cpu/at32ap/at32ap700x/portmux.c @@ -0,0 +1,204 @@ +/* + * Copyright (C) 2006, 2008 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include + +#include + +#include +#include +#include + +/* + * Lots of small functions here. We depend on --gc-sections getting + * rid of the ones we don't need. + */ +void portmux_enable_ebi(unsigned int bus_width, unsigned int addr_width, + unsigned long flags, unsigned long drive_strength) +{ + unsigned long porte_mask = 0; + + if (bus_width > 16) + portmux_select_peripheral(PORTMUX_PORT_E, 0xffff, + PORTMUX_FUNC_A, PORTMUX_BUSKEEPER); + if (addr_width > 23) + porte_mask |= (((1 << (addr_width - 23)) - 1) & 7) << 16; + if (flags & PORTMUX_EBI_CS(2)) + porte_mask |= 1 << 25; + if (flags & PORTMUX_EBI_CS(4)) + porte_mask |= 1 << 21; + if (flags & PORTMUX_EBI_CS(5)) + porte_mask |= 1 << 22; + if (flags & (PORTMUX_EBI_CF(0) | PORTMUX_EBI_CF(1))) + porte_mask |= (1 << 19) | (1 << 20) | (1 << 23); + + portmux_select_peripheral(PORTMUX_PORT_E, porte_mask, + PORTMUX_FUNC_A, 0); + + if (flags & PORTMUX_EBI_NWAIT) + portmux_select_peripheral(PORTMUX_PORT_E, 1 << 24, + PORTMUX_FUNC_A, PORTMUX_PULL_UP); +} + +#ifdef AT32AP700x_CHIP_HAS_MACB +void portmux_enable_macb0(unsigned long flags, unsigned long drive_strength) +{ + unsigned long portc_mask; + + portc_mask = (1 << 3) /* TXD0 */ + | (1 << 4) /* TXD1 */ + | (1 << 7) /* TXEN */ + | (1 << 8) /* TXCK */ + | (1 << 9) /* RXD0 */ + | (1 << 10) /* RXD1 */ + | (1 << 13) /* RXER */ + | (1 << 15) /* RXDV */ + | (1 << 16) /* MDC */ + | (1 << 17); /* MDIO */ + + if (flags & PORTMUX_MACB_MII) + portc_mask |= (1 << 0) /* COL */ + | (1 << 1) /* CRS */ + | (1 << 2) /* TXER */ + | (1 << 5) /* TXD2 */ + | (1 << 6) /* TXD3 */ + | (1 << 11) /* RXD2 */ + | (1 << 12) /* RXD3 */ + | (1 << 14); /* RXCK */ + + if (flags & PORTMUX_MACB_SPEED) + portc_mask |= (1 << 18);/* SPD */ + + /* REVISIT: Some pins are probably pure outputs */ + portmux_select_peripheral(PORTMUX_PORT_C, portc_mask, + PORTMUX_FUNC_A, PORTMUX_BUSKEEPER); +} + +void portmux_enable_macb1(unsigned long flags, unsigned long drive_strength) +{ + unsigned long portc_mask = 0; + unsigned long portd_mask; + + portd_mask = (1 << 13) /* TXD0 */ + | (1 << 14) /* TXD1 */ + | (1 << 11) /* TXEN */ + | (1 << 12) /* TXCK */ + | (1 << 10) /* RXD0 */ + | (1 << 6) /* RXD1 */ + | (1 << 5) /* RXER */ + | (1 << 4) /* RXDV */ + | (1 << 3) /* MDC */ + | (1 << 2); /* MDIO */ + + if (flags & PORTMUX_MACB_MII) + portc_mask = (1 << 19) /* COL */ + | (1 << 23) /* CRS */ + | (1 << 26) /* TXER */ + | (1 << 27) /* TXD2 */ + | (1 << 28) /* TXD3 */ + | (1 << 29) /* RXD2 */ + | (1 << 30) /* RXD3 */ + | (1 << 24); /* RXCK */ + + if (flags & PORTMUX_MACB_SPEED) + portd_mask |= (1 << 15);/* SPD */ + + /* REVISIT: Some pins are probably pure outputs */ + portmux_select_peripheral(PORTMUX_PORT_D, portc_mask, + PORTMUX_FUNC_B, PORTMUX_BUSKEEPER); + portmux_select_peripheral(PORTMUX_PORT_C, portc_mask, + PORTMUX_FUNC_B, PORTMUX_BUSKEEPER); +} +#endif + +#ifdef AT32AP700x_CHIP_HAS_MMCI +void portmux_enable_mmci(unsigned int slot, unsigned long flags, + unsigned long drive_strength) +{ + unsigned long mask; + unsigned long portmux_flags = PORTMUX_PULL_UP; + + /* First, the common CLK signal. It doesn't need a pull-up */ + portmux_select_peripheral(PORTMUX_PORT_A, 1 << 10, + PORTMUX_FUNC_A, 0); + + if (flags & PORTMUX_MMCI_EXT_PULLUP) + portmux_flags = 0; + + /* Then, the per-slot signals */ + switch (slot) { + case 0: + mask = (1 << 11) | (1 << 12); /* CMD and DATA0 */ + if (flags & PORTMUX_MMCI_4BIT) + /* DATA1..DATA3 */ + mask |= (1 << 13) | (1 << 14) | (1 << 15); + portmux_select_peripheral(PORTMUX_PORT_A, mask, + PORTMUX_FUNC_A, portmux_flags); + break; + case 1: + mask = (1 << 6) | (1 << 7); /* CMD and DATA0 */ + if (flags & PORTMUX_MMCI_4BIT) + /* DATA1..DATA3 */ + mask |= (1 << 8) | (1 << 9) | (1 << 10); + portmux_select_peripheral(PORTMUX_PORT_B, mask, + PORTMUX_FUNC_B, portmux_flags); + break; + } +} +#endif + +#ifdef AT32AP700x_CHIP_HAS_SPI +void portmux_enable_spi0(unsigned long cs_mask, unsigned long drive_strength) +{ + unsigned long pin_mask; + + /* MOSI and SCK */ + portmux_select_peripheral(PORTMUX_PORT_A, (1 << 1) | (1 << 2), + PORTMUX_FUNC_A, 0); + /* MISO may float */ + portmux_select_peripheral(PORTMUX_PORT_A, 1 << 0, + PORTMUX_FUNC_A, PORTMUX_BUSKEEPER); + + /* Set up NPCSx as GPIO outputs, initially high */ + pin_mask = (cs_mask & 7) << 3; + if (cs_mask & (1 << 3)) + pin_mask |= 1 << 20; + + portmux_select_gpio(PORTMUX_PORT_A, pin_mask, + PORTMUX_DIR_OUTPUT | PORTMUX_INIT_HIGH); +} + +void portmux_enable_spi1(unsigned long cs_mask, unsigned long drive_strength) +{ + /* MOSI and SCK */ + portmux_select_peripheral(PORTMUX_PORT_B, (1 << 1) | (1 << 5), + PORTMUX_FUNC_B, 0); + /* MISO may float */ + portmux_select_peripheral(PORTMUX_PORT_B, 1 << 0, + PORTMUX_FUNC_B, PORTMUX_BUSKEEPER); + + /* Set up NPCSx as GPIO outputs, initially high */ + portmux_select_gpio(PORTMUX_PORT_B, (cs_mask & 7) << 2, + PORTMUX_DIR_OUTPUT | PORTMUX_INIT_HIGH); + portmux_select_gpio(PORTMUX_PORT_A, (cs_mask & 8) << (27 - 3), + PORTMUX_DIR_OUTPUT | PORTMUX_INIT_HIGH); +} +#endif diff --git a/cpu/at32ap/pio.c b/cpu/at32ap/pio.c deleted file mode 100644 index f64004b..0000000 --- a/cpu/at32ap/pio.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * Copyright (C) 2006 Atmel Corporation - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ -#include - -#include -#include -#include - -#include "pio2.h" - -void gpio_select_periph_A(unsigned int pin, int use_pullup) -{ - void *base = gpio_pin_to_addr(pin); - uint32_t mask = 1 << (pin & 0x1f); - - if (!base) - panic("Invalid GPIO pin %u\n", pin); - - pio2_writel(base, ASR, mask); - pio2_writel(base, PDR, mask); - if (use_pullup) - pio2_writel(base, PUER, mask); - else - pio2_writel(base, PUDR, mask); -} - -void gpio_select_periph_B(unsigned int pin, int use_pullup) -{ - void *base = gpio_pin_to_addr(pin); - uint32_t mask = 1 << (pin & 0x1f); - - if (!base) - panic("Invalid GPIO pin %u\n", pin); - - pio2_writel(base, BSR, mask); - pio2_writel(base, PDR, mask); - if (use_pullup) - pio2_writel(base, PUER, mask); - else - pio2_writel(base, PUDR, mask); -} - -void gpio_select_pio(unsigned int pin, unsigned long gpiof_flags) -{ - void *base = gpio_pin_to_addr(pin); - uint32_t mask = 1 << (pin & 0x1f); - - if (!base) - panic("Invalid GPIO pin %u\n", pin); - - if (gpiof_flags & GPIOF_OUTPUT) { - if (gpiof_flags & GPIOF_MULTIDRV) - pio2_writel(base, MDER, mask); - else - pio2_writel(base, MDDR, mask); - pio2_writel(base, PUDR, mask); - pio2_writel(base, OER, mask); - } else { - if (gpiof_flags & GPIOF_PULLUP) - pio2_writel(base, PUER, mask); - else - pio2_writel(base, PUDR, mask); - if (gpiof_flags & GPIOF_DEGLITCH) - pio2_writel(base, IFER, mask); - else - pio2_writel(base, IFDR, mask); - pio2_writel(base, ODR, mask); - } - - pio2_writel(base, PER, mask); -} - -void gpio_set_value(unsigned int pin, int value) -{ - void *base = gpio_pin_to_addr(pin); - uint32_t mask = 1 << (pin & 0x1f); - - if (!base) - panic("Invalid GPIO pin %u\n", pin); - - if (value) - pio2_writel(base, SODR, mask); - else - pio2_writel(base, CODR, mask); -} - -int gpio_get_value(unsigned int pin) -{ - void *base = gpio_pin_to_addr(pin); - int value; - - if (!base) - panic("Invalid GPIO pin %u\n", pin); - - value = pio2_readl(base, PDSR); - return (value >> (pin & 0x1f)) & 1; -} diff --git a/cpu/at32ap/portmux-pio.c b/cpu/at32ap/portmux-pio.c new file mode 100644 index 0000000..a29f94e --- /dev/null +++ b/cpu/at32ap/portmux-pio.c @@ -0,0 +1,92 @@ +/* + * Copyright (C) 2006, 2008 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include + +#include +#include +#include + +void portmux_select_peripheral(void *port, unsigned long pin_mask, + enum portmux_function func, unsigned long flags) +{ + if (flags & PORTMUX_PULL_UP) + pio_writel(port, PUER, pin_mask); + else + pio_writel(port, PUDR, pin_mask); + + switch (func) { + case PORTMUX_FUNC_A: + pio_writel(port, ASR, pin_mask); + break; + case PORTMUX_FUNC_B: + pio_writel(port, BSR, pin_mask); + break; + } + + pio_writel(port, PDR, pin_mask); +} + +void portmux_select_gpio(void *port, unsigned long pin_mask, + unsigned long flags) +{ + if (flags & PORTMUX_PULL_UP) + pio_writel(port, PUER, pin_mask); + else + pio_writel(port, PUDR, pin_mask); + + if (flags & PORTMUX_OPEN_DRAIN) + pio_writel(port, MDER, pin_mask); + else + pio_writel(port, MDDR, pin_mask); + + if (flags & PORTMUX_DIR_OUTPUT) { + if (flags & PORTMUX_INIT_HIGH) + pio_writel(port, SODR, pin_mask); + else + pio_writel(port, CODR, pin_mask); + pio_writel(port, OER, pin_mask); + } else { + pio_writel(port, ODR, pin_mask); + } + + pio_writel(port, PER, pin_mask); +} + +void pio_set_output_value(unsigned int pin, int value) +{ + void *port = pio_pin_to_port(pin); + + if (!port) + panic("Invalid GPIO pin %u\n", pin); + + __pio_set_output_value(port, pin & 0x1f, value); +} + +int pio_get_input_value(unsigned int pin) +{ + void *port = pio_pin_to_port(pin); + + if (!port) + panic("Invalid GPIO pin %u\n", pin); + + return __pio_get_input_value(port, pin & 0x1f); +} -- cgit v1.1 From 98090cd75cdb40b2ab94c806c338540a5716748b Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Sun, 31 Aug 2008 18:05:32 +0200 Subject: avr32: Add gclk helper functions Add two helper functions for configuring and enabling generic clocks: - gclk_enable_output: Enables output on a GCLKx pin - gclk_set_rate: Configures a gclk to run at a specific rate This should eliminate any reason to go mucking about with PM registers from board code. Signed-off-by: Haavard Skinnemoen --- cpu/at32ap/at32ap700x/clk.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'cpu/at32ap') diff --git a/cpu/at32ap/at32ap700x/clk.c b/cpu/at32ap/at32ap700x/clk.c index b3aa034..a6a6c88 100644 --- a/cpu/at32ap/at32ap700x/clk.c +++ b/cpu/at32ap/at32ap700x/clk.c @@ -25,6 +25,7 @@ #include #include +#include #include "sm.h" @@ -66,3 +67,27 @@ void clk_init(void) sm_writel(PM_MCCTRL, SM_BIT(PLLSEL)); #endif } + +unsigned long __gclk_set_rate(unsigned int id, enum gclk_parent parent, + unsigned long rate, unsigned long parent_rate) +{ + unsigned long divider; + + if (rate == 0 || parent_rate == 0) { + sm_writel(PM_GCCTRL(id), 0); + return 0; + } + + divider = (parent_rate + rate / 2) / rate; + if (divider <= 1) { + sm_writel(PM_GCCTRL(id), parent | SM_BIT(CEN)); + rate = parent_rate; + } else { + divider = min(255, divider / 2 - 1); + sm_writel(PM_GCCTRL(id), parent | SM_BIT(CEN) | SM_BIT(DIVEN) + | SM_BF(DIV, divider)); + rate = parent_rate / (2 * (divider + 1)); + } + + return rate; +} -- cgit v1.1 From 36d375faf5cff98e8dca32aabbbb1ec6036437dd Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Sun, 31 Aug 2008 18:24:24 +0200 Subject: avr32: Use board_postclk_init instead of gclk_init Replace the avr32-specific gclk_init() board hook with the standard board_postclk_init() hook which is supposed to run at the same point during initialization. Provide a dummy weak alias for boards not implementing this hook. The cost of this is: - 2 bytes for the dummy function (retal 0) - 2 bytes for each unnecessary function call (short rcall) which is a pretty small price to pay for avoiding lots of #ifdef clutter. In this particular case, all boards probably end up slightly smaller because we avoid the conditional checking if the gclk_init symbol is NULL. Signed-off-by: Haavard Skinnemoen --- cpu/at32ap/cpu.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'cpu/at32ap') diff --git a/cpu/at32ap/cpu.c b/cpu/at32ap/cpu.c index 1a13702..0ba8361 100644 --- a/cpu/at32ap/cpu.c +++ b/cpu/at32ap/cpu.c @@ -65,9 +65,6 @@ int cpu_init(void) sysreg_write(EVBA, (unsigned long)&_evba); asm volatile("csrf %0" : : "i"(SYSREG_EM_OFFSET)); - if(gclk_init) - gclk_init(); - return 0; } -- cgit v1.1 From baf449fc5ff96f071bb0e3789fd3265f6d4fd9a0 Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Mon, 1 Sep 2008 14:00:07 +0200 Subject: avr32: Add support for "GPIO" port mux The "GPIO" port mux is used on AVR32 UC3 parts as well as AT32AP7200 and all later AVR32 chips. This patch adds a driver for it, implementing the same API as the existing portmux-pio driver but with more functionality. Signed-off-by: Haavard Skinnemoen --- cpu/at32ap/Makefile | 1 + cpu/at32ap/portmux-gpio.c | 107 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 108 insertions(+) create mode 100644 cpu/at32ap/portmux-gpio.c (limited to 'cpu/at32ap') diff --git a/cpu/at32ap/Makefile b/cpu/at32ap/Makefile index 100cf3e..e08f273 100644 --- a/cpu/at32ap/Makefile +++ b/cpu/at32ap/Makefile @@ -35,6 +35,7 @@ COBJS-y += exception.o COBJS-y += cache.o COBJS-y += interrupts.o COBJS-$(CONFIG_PORTMUX_PIO) += portmux-pio.o +COBJS-$(CONFIG_PORTMUX_GPIO) += portmux-gpio.o SRCS := $(START-y:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y)) diff --git a/cpu/at32ap/portmux-gpio.c b/cpu/at32ap/portmux-gpio.c new file mode 100644 index 0000000..9acd040 --- /dev/null +++ b/cpu/at32ap/portmux-gpio.c @@ -0,0 +1,107 @@ +/* + * Copyright (C) 2008 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include + +#include +#include +#include + +void portmux_select_peripheral(void *port, unsigned long pin_mask, + enum portmux_function func, unsigned long flags) +{ + /* Both pull-up and pull-down set means buskeeper */ + if (flags & PORTMUX_PULL_DOWN) + gpio_writel(port, PDERS, pin_mask); + else + gpio_writel(port, PDERC, pin_mask); + if (flags & PORTMUX_PULL_UP) + gpio_writel(port, PUERS, pin_mask); + else + gpio_writel(port, PUERC, pin_mask); + + /* Select drive strength */ + if (flags & PORTMUX_DRIVE_LOW) + gpio_writel(port, ODCR0S, pin_mask); + else + gpio_writel(port, ODCR0C, pin_mask); + if (flags & PORTMUX_DRIVE_HIGH) + gpio_writel(port, ODCR1S, pin_mask); + else + gpio_writel(port, ODCR1C, pin_mask); + + /* Select function */ + if (func & PORTMUX_FUNC_B) + gpio_writel(port, PMR0S, pin_mask); + else + gpio_writel(port, PMR0C, pin_mask); + if (func & PORTMUX_FUNC_C) + gpio_writel(port, PMR1S, pin_mask); + else + gpio_writel(port, PMR1C, pin_mask); + + /* Disable GPIO (i.e. enable peripheral) */ + gpio_writel(port, GPERC, pin_mask); +} + +void portmux_select_gpio(void *port, unsigned long pin_mask, + unsigned long flags) +{ + /* Both pull-up and pull-down set means buskeeper */ + if (flags & PORTMUX_PULL_DOWN) + gpio_writel(port, PDERS, pin_mask); + else + gpio_writel(port, PDERC, pin_mask); + if (flags & PORTMUX_PULL_UP) + gpio_writel(port, PUERS, pin_mask); + else + gpio_writel(port, PUERC, pin_mask); + + /* Enable open-drain mode if requested */ + if (flags & PORTMUX_OPEN_DRAIN) + gpio_writel(port, ODMERS, pin_mask); + else + gpio_writel(port, ODMERC, pin_mask); + + /* Select drive strength */ + if (flags & PORTMUX_DRIVE_LOW) + gpio_writel(port, ODCR0S, pin_mask); + else + gpio_writel(port, ODCR0C, pin_mask); + if (flags & PORTMUX_DRIVE_HIGH) + gpio_writel(port, ODCR1S, pin_mask); + else + gpio_writel(port, ODCR1C, pin_mask); + + /* Select direction and initial pin state */ + if (flags & PORTMUX_DIR_OUTPUT) { + if (flags & PORTMUX_INIT_HIGH) + gpio_writel(port, OVRS, pin_mask); + else + gpio_writel(port, OVRC, pin_mask); + gpio_writel(port, ODERS, pin_mask); + } else { + gpio_writel(port, ODERC, pin_mask); + } + + /* Enable GPIO */ + gpio_writel(port, GPERS, pin_mask); +} -- cgit v1.1 From d8f2aa3298610b44127dbc4796d8038aa5847e0b Mon Sep 17 00:00:00 2001 From: Olav Morken Date: Fri, 23 Jan 2009 12:56:27 +0100 Subject: AVR32: Make cacheflush cpu-dependent The AT32UC3A series of processors doesn't contain any cache, and issuing cache control instructions on those will cause an exception. This commit makes cacheflush.h arch-dependent in preparation for the AT32UC3A-support. Signed-off-by: Gunnar Rangoy Signed-off-by: Paul Driveklepp Signed-off-by: Olav Morken Signed-off-by: Haavard Skinnemoen --- cpu/at32ap/cache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'cpu/at32ap') diff --git a/cpu/at32ap/cache.c b/cpu/at32ap/cache.c index 16a0565..28b9456 100644 --- a/cpu/at32ap/cache.c +++ b/cpu/at32ap/cache.c @@ -22,7 +22,7 @@ #include -#include +#include void dcache_clean_range(volatile void *start, size_t size) { -- cgit v1.1