431 lines
12 KiB
C
431 lines
12 KiB
C
/*
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* On-Chip devices setup code for the AT91SAM9x5 family
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*
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* Copyright (C) 2010 Atmel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*/
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#include <common.h>
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#include <init.h>
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#include <sizes.h>
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#include <gpio.h>
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#include <asm/armlinux.h>
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#include <asm/hardware.h>
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#include <mach/board.h>
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#include <mach/at91_pmc.h>
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#include <mach/at91sam9n12_matrix.h>
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#include <mach/at91sam9_ddrsdr.h>
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#include <mach/io.h>
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#include <mach/iomux.h>
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#include <mach/cpu.h>
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#include <i2c/i2c-gpio.h>
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#include "generic.h"
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void at91_add_device_sdram(u32 size)
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{
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if (!size)
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size = at91sam9n12_get_ddram_size();
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arm_add_mem_device("ram0", AT91_CHIPSELECT_1, size);
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add_mem_device("sram0", AT91SAM9N12_SRAM_BASE,
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AT91SAM9N12_SRAM_SIZE, IORESOURCE_MEM_WRITEABLE);
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}
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/* --------------------------------------------------------------------
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* USB Host (OHCI)
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_USB_OHCI)
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void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data)
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{
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int i;
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if (!data)
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return;
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/* Enable VBus control for UHP ports */
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for (i = 0; i < data->ports; i++) {
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if (gpio_is_valid(data->vbus_pin[i]))
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at91_set_gpio_output(data->vbus_pin[i],
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data->vbus_pin_active_low[i]);
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}
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add_generic_device("at91_ohci", DEVICE_ID_DYNAMIC, NULL, AT91SAM9N12_OHCI_BASE,
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SZ_1M, IORESOURCE_MEM, data);
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}
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#else
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void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* USB Device (Gadget)
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* -------------------------------------------------------------------- */
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#ifdef CONFIG_USB_GADGET_DRIVER_AT91
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void __init at91_add_device_udc(struct at91_udc_data *data)
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{
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if (gpio_is_valid(data->vbus_pin)) {
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at91_set_gpio_input(data->vbus_pin, 0);
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at91_set_deglitch(data->vbus_pin, 1);
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}
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add_generic_device("at91_udc", DEVICE_ID_SINGLE, NULL, AT91SAM9N12_BASE_UDPFS,
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SZ_16K, IORESOURCE_MEM, data);
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}
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#else
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void __init at91_add_device_udc(struct at91_udc_data *data) {}
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#endif
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#if defined(CONFIG_MCI_ATMEL)
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/* Consider only one slot : slot 0 */
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void __init at91_add_device_mci(short mmc_id, struct atmel_mci_platform_data *data)
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{
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if (!data)
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return;
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/* Must have at least one usable slot */
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if (!data->bus_width)
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return;
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/* input/irq */
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if (gpio_is_valid(data->detect_pin)) {
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at91_set_gpio_input(data->detect_pin, 1);
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at91_set_deglitch(data->detect_pin, 1);
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}
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if (gpio_is_valid(data->wp_pin))
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at91_set_gpio_input(data->wp_pin, 1);
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/* CLK */
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at91_set_A_periph(AT91_PIN_PA17, 0);
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/* CMD */
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at91_set_A_periph(AT91_PIN_PA16, 1);
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/* DAT0, maybe DAT1..DAT3 */
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at91_set_A_periph(AT91_PIN_PA15, 1);
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if (data->bus_width == 4) {
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at91_set_A_periph(AT91_PIN_PA18, 1);
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at91_set_A_periph(AT91_PIN_PA19, 1);
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at91_set_A_periph(AT91_PIN_PA20, 1);
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}
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add_generic_device("atmel_mci", DEVICE_ID_SINGLE, NULL, AT91SAM9N12_BASE_MCI, SZ_16K,
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IORESOURCE_MEM, data);
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}
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#else
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void __init at91_add_device_mci(short mmc_id, struct atmel_mci_platform_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* NAND / SmartMedia
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_NAND_ATMEL)
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static struct resource nand_resources[] = {
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[0] = {
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.start = AT91_CHIPSELECT_3,
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.end = AT91_CHIPSELECT_3 + SZ_256M - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_BASE_SYS + AT91_PMECC,
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.end = AT91_BASE_SYS + AT91_PMECC + 0x600 - 1,
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.flags = IORESOURCE_MEM,
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},
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[2] = {
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.start = AT91_BASE_SYS + AT91_PMERRLOC,
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.end = AT91_BASE_SYS + AT91_PMERRLOC + 0x200 - 1,
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.flags = IORESOURCE_MEM,
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},
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[3] = {
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.start = AT91SAM9N12_ROM_BASE,
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.end = AT91SAM9N12_ROM_BASE + AT91SAM9N12_ROM_SIZE - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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void __init at91_add_device_nand(struct atmel_nand_data *data)
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{
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unsigned long csa;
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if (!data)
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return;
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data->pmecc_lookup_table_offset = 0x8000;
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csa = at91_sys_read(AT91_MATRIX_EBICSA);
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/* Assign CS3 to NAND/SmartMedia Interface */
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csa |= AT91_MATRIX_EBI_CS3A_SMC_NANDFLASH;
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/* Configure databus */
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if (!data->bus_on_d0)
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csa |= AT91_MATRIX_NFD0_ON_D16;
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else
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csa &= ~AT91_MATRIX_NFD0_ON_D16;
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/* Configure IO drive */
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csa |= AT91_MATRIX_EBI_HIGH_DRIVE;
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at91_sys_write(AT91_MATRIX_EBICSA, csa);
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/* enable pin */
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if (gpio_is_valid(data->enable_pin))
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at91_set_gpio_output(data->enable_pin, 1);
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/* ready/busy pin */
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if (gpio_is_valid(data->rdy_pin))
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at91_set_gpio_input(data->rdy_pin, 1);
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/* card detect pin */
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if (gpio_is_valid(data->det_pin))
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at91_set_gpio_input(data->det_pin, 1);
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/* configure NANDOE */
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at91_set_A_periph(AT91_PIN_PD0, 1);
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/* configure NANDWE */
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at91_set_A_periph(AT91_PIN_PD1, 1);
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/* configure ALE */
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at91_set_A_periph(AT91_PIN_PD2, 1);
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/* configure CLE */
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at91_set_A_periph(AT91_PIN_PD3, 1);
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/* configure multiplexed pins for D16~D31 */
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if (!data->bus_on_d0) {
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at91_set_A_periph(AT91_PIN_PD6, 1);
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at91_set_A_periph(AT91_PIN_PD7, 1);
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at91_set_A_periph(AT91_PIN_PD8, 1);
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at91_set_A_periph(AT91_PIN_PD9, 1);
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at91_set_A_periph(AT91_PIN_PD10, 1);
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at91_set_A_periph(AT91_PIN_PD11, 1);
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at91_set_A_periph(AT91_PIN_PD12, 1);
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at91_set_A_periph(AT91_PIN_PD13, 1);
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if (data->bus_width_16) {
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at91_set_A_periph(AT91_PIN_PD14, 1);
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at91_set_A_periph(AT91_PIN_PD15, 1);
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at91_set_A_periph(AT91_PIN_PD16, 1);
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at91_set_A_periph(AT91_PIN_PD17, 1);
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at91_set_A_periph(AT91_PIN_PD18, 1);
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at91_set_A_periph(AT91_PIN_PD19, 1);
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at91_set_A_periph(AT91_PIN_PD20, 1);
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at91_set_A_periph(AT91_PIN_PD21, 1);
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}
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}
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add_generic_device_res("atmel_nand", DEVICE_ID_SINGLE, nand_resources,
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ARRAY_SIZE(nand_resources), data);
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}
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#else
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void __init at91_add_device_nand(struct atmel_nand_data *data) {}
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#endif
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#if defined(CONFIG_I2C_GPIO)
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static struct i2c_gpio_platform_data pdata_i2c0 = {
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.sda_pin = AT91_PIN_PA30,
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.sda_is_open_drain = 1,
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.scl_pin = AT91_PIN_PA31,
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.scl_is_open_drain = 1,
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.udelay = 5, /* ~100 kHz */
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};
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void at91_add_device_i2c(short i2c_id, struct i2c_board_info *devices, int nr_devices)
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{
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struct i2c_gpio_platform_data *pdata = &pdata_i2c0;
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i2c_register_board_info(0, devices, nr_devices);
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at91_set_GPIO_periph(pdata->sda_pin, 1); /* TWD (SDA) */
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at91_set_multi_drive(pdata->sda_pin, 1);
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at91_set_GPIO_periph(pdata->scl_pin, 1); /* TWCK (SCL) */
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at91_set_multi_drive(pdata->scl_pin, 1);
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add_generic_device_res("i2c-gpio", 0, NULL, 0, pdata);
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}
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#else
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void at91_add_device_i2c(short i2c_id, struct i2c_board_info *devices, int nr_devices) {}
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#endif
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/* --------------------------------------------------------------------
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* SPI
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_DRIVER_SPI_ATMEL)
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static unsigned spi0_standard_cs[4] = { AT91_PIN_PA14, AT91_PIN_PA7, AT91_PIN_PA1, AT91_PIN_PB3 };
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static unsigned spi1_standard_cs[4] = { AT91_PIN_PA8, AT91_PIN_PA0, AT91_PIN_PA31, AT91_PIN_PA30 };
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static struct at91_spi_platform_data spi_pdata[] = {
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[0] = {
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.chipselect = spi0_standard_cs,
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.num_chipselect = ARRAY_SIZE(spi0_standard_cs),
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},
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[1] = {
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.chipselect = spi1_standard_cs,
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.num_chipselect = ARRAY_SIZE(spi1_standard_cs),
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},
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};
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void at91_add_device_spi(int spi_id, struct at91_spi_platform_data *pdata)
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{
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int i;
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int cs_pin;
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resource_size_t start = ~0;
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BUG_ON(spi_id > 1);
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if (!pdata)
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pdata = &spi_pdata[spi_id];
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for (i = 0; i < pdata->num_chipselect; i++) {
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cs_pin = pdata->chipselect[i];
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/* enable chip-select pin */
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if (gpio_is_valid(cs_pin))
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at91_set_gpio_output(cs_pin, 1);
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}
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/* Configure SPI bus(es) */
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switch (spi_id) {
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case 0:
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start = AT91SAM9N12_BASE_SPI0;
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at91_set_A_periph(AT91_PIN_PA11, 0); /* SPI0_MISO */
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at91_set_A_periph(AT91_PIN_PA12, 0); /* SPI0_MOSI */
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at91_set_A_periph(AT91_PIN_PA13, 0); /* SPI0_SPCK */
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break;
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case 1:
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start = AT91SAM9N12_BASE_SPI1;
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at91_set_B_periph(AT91_PIN_PA21, 0); /* SPI1_MISO */
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at91_set_B_periph(AT91_PIN_PA22, 0); /* SPI1_MOSI */
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at91_set_B_periph(AT91_PIN_PA23, 0); /* SPI1_SPCK */
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break;
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}
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add_generic_device("atmel_spi", spi_id, NULL, start, SZ_16K,
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IORESOURCE_MEM, pdata);
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}
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#else
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void at91_add_device_spi(int spi_id, struct at91_spi_platform_data *pdata) {}
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#endif
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/* --------------------------------------------------------------------
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* LCD Controller
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_DRIVER_VIDEO_ATMEL_HLCD)
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void __init at91_add_device_lcdc(struct atmel_lcdfb_platform_data *data)
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{
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BUG_ON(!data);
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at91_set_A_periph(AT91_PIN_PC26, 0); /* LCDPWM */
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at91_set_A_periph(AT91_PIN_PC27, 0); /* LCDVSYNC */
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at91_set_A_periph(AT91_PIN_PC28, 0); /* LCDHSYNC */
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at91_set_A_periph(AT91_PIN_PC24, 0); /* LCDDISP */
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at91_set_A_periph(AT91_PIN_PC29, 0); /* LCDDEN */
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at91_set_A_periph(AT91_PIN_PC30, 0); /* LCDPCK */
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at91_set_A_periph(AT91_PIN_PC0, 0); /* LCDD0 */
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at91_set_A_periph(AT91_PIN_PC1, 0); /* LCDD1 */
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at91_set_A_periph(AT91_PIN_PC2, 0); /* LCDD2 */
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at91_set_A_periph(AT91_PIN_PC3, 0); /* LCDD3 */
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at91_set_A_periph(AT91_PIN_PC4, 0); /* LCDD4 */
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at91_set_A_periph(AT91_PIN_PC5, 0); /* LCDD5 */
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at91_set_A_periph(AT91_PIN_PC6, 0); /* LCDD6 */
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at91_set_A_periph(AT91_PIN_PC7, 0); /* LCDD7 */
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at91_set_A_periph(AT91_PIN_PC8, 0); /* LCDD8 */
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at91_set_A_periph(AT91_PIN_PC9, 0); /* LCDD9 */
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at91_set_A_periph(AT91_PIN_PC10, 0); /* LCDD10 */
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at91_set_A_periph(AT91_PIN_PC11, 0); /* LCDD11 */
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at91_set_A_periph(AT91_PIN_PC12, 0); /* LCDD12 */
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at91_set_A_periph(AT91_PIN_PC13, 0); /* LCDD13 */
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at91_set_A_periph(AT91_PIN_PC14, 0); /* LCDD14 */
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at91_set_A_periph(AT91_PIN_PC15, 0); /* LCDD15 */
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at91_set_A_periph(AT91_PIN_PC16, 0); /* LCDD16 */
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at91_set_A_periph(AT91_PIN_PC17, 0); /* LCDD17 */
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at91_set_A_periph(AT91_PIN_PC18, 0); /* LCDD18 */
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at91_set_A_periph(AT91_PIN_PC19, 0); /* LCDD19 */
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at91_set_A_periph(AT91_PIN_PC20, 0); /* LCDD20 */
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at91_set_A_periph(AT91_PIN_PC21, 0); /* LCDD21 */
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at91_set_A_periph(AT91_PIN_PC22, 0); /* LCDD22 */
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at91_set_A_periph(AT91_PIN_PC23, 0); /* LCDD23 */
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add_generic_device("atmel_hlcdfb", DEVICE_ID_SINGLE, NULL, AT91SAM9N12_BASE_LCDC, SZ_4K,
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IORESOURCE_MEM, data);
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}
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#else
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void __init at91_add_device_lcdc(struct atmel_lcdfb_platform_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* UART
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_DRIVER_SERIAL_ATMEL)
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resource_size_t __init at91_configure_dbgu(void)
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{
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at91_set_A_periph(AT91_PIN_PA9, 0); /* DRXD */
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at91_set_A_periph(AT91_PIN_PA10, 1); /* DTXD */
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return AT91_BASE_SYS + AT91_DBGU;
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}
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resource_size_t __init at91_configure_usart0(unsigned pins)
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{
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at91_set_A_periph(AT91_PIN_PA0, 1); /* TXD0 */
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at91_set_A_periph(AT91_PIN_PA1, 0); /* RXD0 */
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if (pins & ATMEL_UART_RTS)
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at91_set_A_periph(AT91_PIN_PA2, 0); /* RTS0 */
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if (pins & ATMEL_UART_CTS)
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at91_set_A_periph(AT91_PIN_PA3, 0); /* CTS0 */
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return AT91SAM9N12_BASE_USART0;
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}
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resource_size_t __init at91_configure_usart1(unsigned pins)
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{
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at91_set_A_periph(AT91_PIN_PA5, 1); /* TXD1 */
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at91_set_A_periph(AT91_PIN_PA6, 0); /* RXD1 */
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if (pins & ATMEL_UART_RTS)
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at91_set_C_periph(AT91_PIN_PC27, 0); /* RTS1 */
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if (pins & ATMEL_UART_CTS)
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at91_set_C_periph(AT91_PIN_PC28, 0); /* CTS1 */
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return AT91SAM9N12_BASE_USART1;
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}
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resource_size_t __init at91_configure_usart2(unsigned pins)
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{
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at91_set_A_periph(AT91_PIN_PA7, 1); /* TXD2 */
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at91_set_A_periph(AT91_PIN_PA8, 0); /* RXD2 */
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if (pins & ATMEL_UART_RTS)
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at91_set_B_periph(AT91_PIN_PB0, 0); /* RTS2 */
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if (pins & ATMEL_UART_CTS)
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at91_set_B_periph(AT91_PIN_PB1, 0); /* CTS2 */
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return AT91SAM9N12_BASE_USART2;
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}
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resource_size_t __init at91_configure_usart3(unsigned pins)
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{
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at91_set_B_periph(AT91_PIN_PC22, 1); /* TXD3 */
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at91_set_B_periph(AT91_PIN_PC23, 0); /* RXD3 */
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if (pins & ATMEL_UART_RTS)
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at91_set_B_periph(AT91_PIN_PC24, 0); /* RTS3 */
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if (pins & ATMEL_UART_CTS)
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at91_set_B_periph(AT91_PIN_PC25, 0); /* CTS3 */
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return AT91SAM9N12_BASE_USART3;
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}
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#endif
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