/* * arch/arm/mach-at91/at91sam9261_devices.c * * Copyright (C) 2006 Atmel * * 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. * */ #include #include #include #include #include #include #include #include #include #include #include "generic.h" void at91_add_device_sdram(u32 size) { arm_add_mem_device("ram0", AT91_CHIPSELECT_1, size); if (cpu_is_at91sam9g10()) add_mem_device("sram0", AT91SAM9G10_SRAM_BASE, AT91SAM9G10_SRAM_SIZE, IORESOURCE_MEM_WRITEABLE); else add_mem_device("sram0", AT91SAM9261_SRAM_BASE, AT91SAM9261_SRAM_SIZE, IORESOURCE_MEM_WRITEABLE); } /* -------------------------------------------------------------------- * USB Host * -------------------------------------------------------------------- */ #if defined(CONFIG_USB_OHCI) void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data) { if (!data) return; add_generic_device("at91_ohci", DEVICE_ID_DYNAMIC, NULL, AT91SAM9261_UHP_BASE, 1024 * 1024, IORESOURCE_MEM, data); } #else void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data) {} #endif /* -------------------------------------------------------------------- * USB Device (Gadget) * -------------------------------------------------------------------- */ #ifdef CONFIG_USB_GADGET_DRIVER_AT91 void __init at91_add_device_udc(struct at91_udc_data *data) { if (data->vbus_pin > 0) { at91_set_gpio_input(data->vbus_pin, 0); at91_set_deglitch(data->vbus_pin, 1); } add_generic_device("at91_udc", DEVICE_ID_DYNAMIC, NULL, AT91SAM9261_BASE_UDP, SZ_16K, IORESOURCE_MEM, data); } #else void __init at91_add_device_udc(struct at91_udc_data *data) {} #endif #if defined(CONFIG_NAND_ATMEL) void at91_add_device_nand(struct atmel_nand_data *data) { unsigned long csa; if (!data) return; csa = at91_sys_read(AT91_MATRIX_EBICSA); at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA); /* enable pin */ if (data->enable_pin) at91_set_gpio_output(data->enable_pin, 1); /* ready/busy pin */ if (data->rdy_pin) at91_set_gpio_input(data->rdy_pin, 1); /* card detect pin */ if (data->det_pin) at91_set_gpio_input(data->det_pin, 1); at91_set_A_periph(AT91_PIN_PC0, 0); /* NANDOE */ at91_set_A_periph(AT91_PIN_PC1, 0); /* NANDWE */ add_generic_device("atmel_nand", 0, NULL, AT91_CHIPSELECT_3, 0x10, IORESOURCE_MEM, data); } #else void at91_add_device_nand(struct atmel_nand_data *data) {} #endif /* -------------------------------------------------------------------- * SPI * -------------------------------------------------------------------- */ #if defined(CONFIG_DRIVER_SPI_ATMEL) static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 }; static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB28, AT91_PIN_PA24, AT91_PIN_PA25, AT91_PIN_PA26 }; static struct at91_spi_platform_data spi_pdata[] = { [0] = { .chipselect = spi0_standard_cs, .num_chipselect = ARRAY_SIZE(spi0_standard_cs), }, [1] = { .chipselect = spi1_standard_cs, .num_chipselect = ARRAY_SIZE(spi1_standard_cs), }, }; void at91_add_device_spi(int spi_id, struct at91_spi_platform_data *pdata) { int i; int cs_pin; resource_size_t start = ~0; BUG_ON(spi_id > 1); if (!pdata) pdata = &spi_pdata[spi_id]; for (i = 0; i < pdata->num_chipselect; i++) { cs_pin = pdata->chipselect[i]; /* enable chip-select pin */ if (cs_pin > 0) at91_set_gpio_output(cs_pin, 1); } /* Configure SPI bus(es) */ switch (spi_id) { case 0: start = AT91SAM9261_BASE_SPI0; at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */ at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */ at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */ break; case 1: start = AT91SAM9213_BASE_SPI1; at91_set_A_periph(AT91_PIN_PB30, 0); /* SPI1_MISO */ at91_set_A_periph(AT91_PIN_PB31, 0); /* SPI1_MOSI */ at91_set_A_periph(AT91_PIN_PB29, 0); /* SPI1_SPCK */ break; } add_generic_device("atmel_spi", spi_id, NULL, start, SZ_16K, IORESOURCE_MEM, pdata); } #else void __init at91_add_device_spi(int spi_id, struct at91_spi_platform_data *pdata) {} #endif resource_size_t __init at91_configure_dbgu(void) { at91_set_A_periph(AT91_PIN_PA9, 0); /* DRXD */ at91_set_A_periph(AT91_PIN_PA10, 1); /* DTXD */ return AT91_BASE_SYS + AT91_DBGU; } resource_size_t __init at91_configure_usart0(unsigned pins) { at91_set_A_periph(AT91_PIN_PC8, 1); /* TXD0 */ at91_set_A_periph(AT91_PIN_PC9, 0); /* RXD0 */ if (pins & ATMEL_UART_RTS) at91_set_A_periph(AT91_PIN_PC10, 0); /* RTS0 */ if (pins & ATMEL_UART_CTS) at91_set_A_periph(AT91_PIN_PC11, 0); /* CTS0 */ return AT91SAM9261_BASE_US0; } resource_size_t __init at91_configure_usart1(unsigned pins) { at91_set_A_periph(AT91_PIN_PC12, 1); /* TXD1 */ at91_set_A_periph(AT91_PIN_PC13, 0); /* RXD1 */ if (pins & ATMEL_UART_RTS) at91_set_B_periph(AT91_PIN_PA12, 0); /* RTS1 */ if (pins & ATMEL_UART_CTS) at91_set_B_periph(AT91_PIN_PA13, 0); /* CTS1 */ return AT91SAM9261_BASE_US1; } resource_size_t __init at91_configure_usart2(unsigned pins) { at91_set_A_periph(AT91_PIN_PC15, 0); /* RXD2 */ at91_set_A_periph(AT91_PIN_PC14, 1); /* TXD2 */ if (pins & ATMEL_UART_RTS) at91_set_B_periph(AT91_PIN_PA15, 0); /* RTS2*/ if (pins & ATMEL_UART_CTS) at91_set_B_periph(AT91_PIN_PA16, 0); /* CTS2 */ return AT91SAM9261_BASE_US2; } #if defined(CONFIG_MCI_ATMEL) /* Consider only one slot : slot 0 */ void at91_add_device_mci(short mmc_id, struct atmel_mci_platform_data *data) { struct device_d *dev; if (!data) return; /* need bus_width */ if (!data->bus_width) return; /* input/irq */ if (data->detect_pin) { at91_set_gpio_input(data->detect_pin, 1); at91_set_deglitch(data->detect_pin, 1); } if (data->wp_pin) at91_set_gpio_input(data->wp_pin, 1); /* CLK */ at91_set_B_periph(AT91_PIN_PA2, 0); /* CMD */ at91_set_B_periph(AT91_PIN_PA1, 1); /* DAT0, maybe DAT1..DAT3 */ at91_set_B_periph(AT91_PIN_PA0, 1); if (data->bus_width == 4) { at91_set_B_periph(AT91_PIN_PA4, 1); at91_set_B_periph(AT91_PIN_PA5, 1); at91_set_B_periph(AT91_PIN_PA6, 1); } dev = add_generic_device("atmel_mci", 0, NULL, AT91SAM9261_BASE_MCI, SZ_16K, IORESOURCE_MEM, data); } #else void at91_add_device_mci(short mmc_id, struct atmel_mci_platform_data *data) {} #endif