From 4688f9e34a87e825aed34d07c9ca7a273e6fc8ab Mon Sep 17 00:00:00 2001 From: Peter Ma Date: Sun, 1 Jun 2008 22:59:24 -0700 Subject: avr32: Add GPIO manipulation functions Adds GPIO manipulation functions for AVR32 AP7 platform. Signed-off-by: Peter Ma [haavard.skinnemoen@atmel.com: coding style fixup, slight simplification] Signed-off-by: Haavard Skinnemoen --- cpu/at32ap/pio.c | 56 ++++++++++++++++++++++++++++++++ include/asm-avr32/arch-at32ap700x/gpio.h | 8 +++++ 2 files changed, 64 insertions(+) diff --git a/cpu/at32ap/pio.c b/cpu/at32ap/pio.c index 9ba0b8e..f64004b 100644 --- a/cpu/at32ap/pio.c +++ b/cpu/at32ap/pio.c @@ -58,3 +58,59 @@ void gpio_select_periph_B(unsigned int pin, int use_pullup) 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/include/asm-avr32/arch-at32ap700x/gpio.h b/include/asm-avr32/arch-at32ap700x/gpio.h index ef20cea..8c922c7 100644 --- a/include/asm-avr32/arch-at32ap700x/gpio.h +++ b/include/asm-avr32/arch-at32ap700x/gpio.h @@ -180,6 +180,11 @@ #define GPIO_PIN_PE25 (GPIO_PIOE_BASE + 25) #define GPIO_PIN_PE26 (GPIO_PIOE_BASE + 26) +#define GPIOF_PULLUP 0x00000001 /* (not-OUT) Enable pull-up */ +#define GPIOF_OUTPUT 0x00000002 /* (OUT) Enable output driver */ +#define GPIOF_DEGLITCH 0x00000004 /* (IN) Filter glitches */ +#define GPIOF_MULTIDRV 0x00000008 /* Enable multidriver option */ + static inline void *gpio_pin_to_addr(unsigned int pin) { switch (pin >> 5) { @@ -200,6 +205,9 @@ static inline void *gpio_pin_to_addr(unsigned int pin) void gpio_select_periph_A(unsigned int pin, int use_pullup); void gpio_select_periph_B(unsigned int pin, int use_pullup); +void gpio_select_pio(unsigned int pin, unsigned long gpiof_flags); +void gpio_set_value(unsigned int pin, int value); +int gpio_get_value(unsigned int pin); void gpio_enable_ebi(void); -- cgit v1.1 From 5605ef6b5802921cbefe6a933a9dea3497396b5c Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Fri, 20 Jun 2008 12:44:28 +0200 Subject: avr32: Fix SPI portmux initialization Use the new GPIO manipulation functions to set up the chip select lines, and make sure both busses use GPIO for chip select control. Signed-off-by: Haavard Skinnemoen --- cpu/at32ap/at32ap700x/gpio.c | 56 +++++++++++++++++++++++++++----------------- 1 file changed, 34 insertions(+), 22 deletions(-) diff --git a/cpu/at32ap/at32ap700x/gpio.c b/cpu/at32ap/at32ap700x/gpio.c index 3da35d4..56ba2f9 100644 --- a/cpu/at32ap/at32ap700x/gpio.c +++ b/cpu/at32ap/at32ap700x/gpio.c @@ -149,24 +149,27 @@ void gpio_enable_mmci(void) #ifdef AT32AP700x_CHIP_HAS_SPI void gpio_enable_spi0(unsigned long cs_mask) { - u32 pa_mask = 0; - 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 */ - if (cs_mask & (1 << 0)) - pa_mask |= 1 << 3; /* NPCS0 */ - if (cs_mask & (1 << 1)) - pa_mask |= 1 << 4; /* NPCS1 */ - if (cs_mask & (1 << 2)) - pa_mask |= 1 << 5; /* NPCS2 */ - if (cs_mask & (1 << 3)) - pa_mask |= 1 << 20; /* NPCS3 */ - - __raw_writel(pa_mask, PIOA_BASE + 0x00); - __raw_writel(pa_mask, PIOA_BASE + 0x30); - __raw_writel(pa_mask, PIOA_BASE + 0x10); + /* 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) @@ -175,13 +178,22 @@ void gpio_enable_spi1(unsigned long cs_mask) gpio_select_periph_B(GPIO_PIN_PB1, 0); /* MOSI */ gpio_select_periph_B(GPIO_PIN_PB5, 0); /* SCK */ - if (cs_mask & (1 << 0)) - gpio_select_periph_B(GPIO_PIN_PB2, 0); /* NPCS0 */ - if (cs_mask & (1 << 1)) - gpio_select_periph_B(GPIO_PIN_PB3, 0); /* NPCS1 */ - if (cs_mask & (1 << 2)) - gpio_select_periph_B(GPIO_PIN_PB4, 0); /* NPCS2 */ - if (cs_mask & (1 << 3)) - gpio_select_periph_A(GPIO_PIN_PA27, 0); /* NPCS3 */ + /* 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 -- cgit v1.1 From 5f723a3b98c630bde33de74351f2121691fdef14 Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Fri, 20 Jun 2008 10:41:05 +0200 Subject: avr32: Enable SPI flash support on ATNGW100 The ATNGW100 has 8MB DataFlash on board. Give users access to it through the new SPI flash framework. Signed-off-by: Haavard Skinnemoen --- board/atmel/atngw100/atngw100.c | 25 +++++++++++++++++++++++++ include/configs/atngw100.h | 6 ++++++ 2 files changed, 31 insertions(+) diff --git a/board/atmel/atngw100/atngw100.c b/board/atmel/atngw100/atngw100.c index 375f0e7..f2c3e79 100644 --- a/board/atmel/atngw100/atngw100.c +++ b/board/atmel/atngw100/atngw100.c @@ -60,6 +60,9 @@ int board_early_init_f(void) #if defined(CONFIG_MMC) gpio_enable_mmci(); #endif +#if defined(CONFIG_ATMEL_SPI) + gpio_enable_spi0(1 << 0); +#endif return 0; } @@ -89,3 +92,25 @@ void board_init_info(void) gd->bd->bi_phy_id[0] = 0x01; gd->bd->bi_phy_id[1] = 0x03; } + +/* SPI chip select control */ +#ifdef CONFIG_ATMEL_SPI +#include + +#define ATNGW100_DATAFLASH_CS_PIN GPIO_PIN_PA3 + +int spi_cs_is_valid(unsigned int bus, unsigned int cs) +{ + return bus == 0 && cs == 0; +} + +void spi_cs_activate(struct spi_slave *slave) +{ + gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 0); +} + +void spi_cs_deactivate(struct spi_slave *slave) +{ + gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 1); +} +#endif /* CONFIG_ATMEL_SPI */ diff --git a/include/configs/atngw100.h b/include/configs/atngw100.h index 3fc9975..7ac51b5 100644 --- a/include/configs/atngw100.h +++ b/include/configs/atngw100.h @@ -114,6 +114,8 @@ #define CONFIG_CMD_FAT #define CONFIG_CMD_JFFS2 #define CONFIG_CMD_MMC +#define CONFIG_CMD_SF +#define CONFIG_CMD_SPI #undef CONFIG_CMD_AUTOSCRIPT #undef CONFIG_CMD_FPGA @@ -126,6 +128,10 @@ #define CFG_NR_PIOS 5 #define CFG_HSDRAMC 1 #define CONFIG_MMC 1 +#define CONFIG_ATMEL_SPI 1 + +#define CONFIG_SPI_FLASH 1 +#define CONFIG_SPI_FLASH_ATMEL 1 #define CFG_DCACHE_LINESZ 32 #define CFG_ICACHE_LINESZ 32 -- cgit v1.1