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2e83640270
Patch from Andrew Victor This patch updates the platform device support for the AT91RM9200. The changes include: 1. USB Host device renamed to "at91_ohci" since the driver is also usable on the AT91SAM9261 processor. 2. Enabling multidrive on the USB Device's pullup pin should not be done for all boards. Moved into board-specific files. [Patch from David Brownell] 3. Move enabling of PCMCIA/Compact Flash pins out of the driver. 4. Added SPI device and resources. 5. Added Watchdog device and resources. [Patch from David Brownell] 6. Added UART device and resources. 7. The simple devices (watchdog, rtc, i2c) are now automatically registered and don't have to be registered separately in each board-specific file. [Patch from David Brownell] Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
814 lines
20 KiB
C
814 lines
20 KiB
C
/*
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* arch/arm/mach-at91rm9200/devices.c
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*
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* Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org>
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* Copyright (C) 2005 David Brownell
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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 <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <linux/config.h>
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#include <linux/platform_device.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/board.h>
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#include <asm/arch/gpio.h>
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#include "generic.h"
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#define SZ_512 0x00000200
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#define SZ_256 0x00000100
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#define SZ_16 0x00000010
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/* --------------------------------------------------------------------
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* USB Host
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
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static u64 ohci_dmamask = 0xffffffffUL;
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static struct at91_usbh_data usbh_data;
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static struct resource at91_usbh_resources[] = {
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[0] = {
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.start = AT91_UHP_BASE,
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.end = AT91_UHP_BASE + SZ_1M - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_ID_UHP,
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.end = AT91_ID_UHP,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91rm9200_usbh_device = {
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.name = "at91_ohci",
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.id = -1,
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.dev = {
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.dma_mask = &ohci_dmamask,
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.coherent_dma_mask = 0xffffffff,
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.platform_data = &usbh_data,
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},
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.resource = at91_usbh_resources,
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.num_resources = ARRAY_SIZE(at91_usbh_resources),
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};
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void __init at91_add_device_usbh(struct at91_usbh_data *data)
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{
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if (!data)
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return;
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usbh_data = *data;
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platform_device_register(&at91rm9200_usbh_device);
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}
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#else
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void __init at91_add_device_usbh(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_AT91
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static struct at91_udc_data udc_data;
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static struct resource at91_udc_resources[] = {
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[0] = {
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.start = AT91_BASE_UDP,
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.end = AT91_BASE_UDP + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_ID_UDP,
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.end = AT91_ID_UDP,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91rm9200_udc_device = {
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.name = "at91_udc",
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.id = -1,
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.dev = {
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.platform_data = &udc_data,
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},
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.resource = at91_udc_resources,
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.num_resources = ARRAY_SIZE(at91_udc_resources),
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};
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void __init at91_add_device_udc(struct at91_udc_data *data)
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{
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if (!data)
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return;
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if (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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if (data->pullup_pin)
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at91_set_gpio_output(data->pullup_pin, 0);
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udc_data = *data;
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platform_device_register(&at91rm9200_udc_device);
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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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/* --------------------------------------------------------------------
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* Ethernet
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_ARM_AT91_ETHER) || defined(CONFIG_ARM_AT91_ETHER_MODULE)
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static u64 eth_dmamask = 0xffffffffUL;
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static struct at91_eth_data eth_data;
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static struct resource at91_eth_resources[] = {
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[0] = {
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.start = AT91_BASE_EMAC,
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.end = AT91_BASE_EMAC + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_ID_EMAC,
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.end = AT91_ID_EMAC,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91rm9200_eth_device = {
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.name = "at91_ether",
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.id = -1,
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.dev = {
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.dma_mask = ð_dmamask,
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.coherent_dma_mask = 0xffffffff,
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.platform_data = ð_data,
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},
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.resource = at91_eth_resources,
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.num_resources = ARRAY_SIZE(at91_eth_resources),
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};
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void __init at91_add_device_eth(struct at91_eth_data *data)
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{
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if (!data)
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return;
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if (data->phy_irq_pin) {
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at91_set_gpio_input(data->phy_irq_pin, 0);
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at91_set_deglitch(data->phy_irq_pin, 1);
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}
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/* Pins used for MII and RMII */
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at91_set_A_periph(AT91_PIN_PA16, 0); /* EMDIO */
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at91_set_A_periph(AT91_PIN_PA15, 0); /* EMDC */
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at91_set_A_periph(AT91_PIN_PA14, 0); /* ERXER */
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at91_set_A_periph(AT91_PIN_PA13, 0); /* ERX1 */
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at91_set_A_periph(AT91_PIN_PA12, 0); /* ERX0 */
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at91_set_A_periph(AT91_PIN_PA11, 0); /* ECRS_ECRSDV */
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at91_set_A_periph(AT91_PIN_PA10, 0); /* ETX1 */
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at91_set_A_periph(AT91_PIN_PA9, 0); /* ETX0 */
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at91_set_A_periph(AT91_PIN_PA8, 0); /* ETXEN */
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at91_set_A_periph(AT91_PIN_PA7, 0); /* ETXCK_EREFCK */
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if (!data->is_rmii) {
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at91_set_B_periph(AT91_PIN_PB19, 0); /* ERXCK */
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at91_set_B_periph(AT91_PIN_PB18, 0); /* ECOL */
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at91_set_B_periph(AT91_PIN_PB17, 0); /* ERXDV */
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at91_set_B_periph(AT91_PIN_PB16, 0); /* ERX3 */
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at91_set_B_periph(AT91_PIN_PB15, 0); /* ERX2 */
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at91_set_B_periph(AT91_PIN_PB14, 0); /* ETXER */
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at91_set_B_periph(AT91_PIN_PB13, 0); /* ETX3 */
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at91_set_B_periph(AT91_PIN_PB12, 0); /* ETX2 */
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}
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eth_data = *data;
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platform_device_register(&at91rm9200_eth_device);
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}
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#else
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void __init at91_add_device_eth(struct at91_eth_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* Compact Flash / PCMCIA
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
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static struct at91_cf_data cf_data;
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static struct resource at91_cf_resources[] = {
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[0] = {
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.start = AT91_CF_BASE,
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/* ties up CS4, CS5 and CS6 */
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.end = AT91_CF_BASE + (0x30000000 - 1),
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.flags = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
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},
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};
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static struct platform_device at91rm9200_cf_device = {
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.name = "at91_cf",
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.id = -1,
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.dev = {
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.platform_data = &cf_data,
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},
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.resource = at91_cf_resources,
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.num_resources = ARRAY_SIZE(at91_cf_resources),
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};
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void __init at91_add_device_cf(struct at91_cf_data *data)
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{
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if (!data)
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return;
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/* input/irq */
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if (data->irq_pin) {
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at91_set_gpio_input(data->irq_pin, 1);
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at91_set_deglitch(data->irq_pin, 1);
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}
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at91_set_gpio_input(data->det_pin, 1);
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at91_set_deglitch(data->det_pin, 1);
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/* outputs, initially off */
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if (data->vcc_pin)
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at91_set_gpio_output(data->vcc_pin, 0);
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at91_set_gpio_output(data->rst_pin, 0);
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/* force poweron defaults for these pins ... */
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at91_set_A_periph(AT91_PIN_PC9, 0); /* A25/CFRNW */
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at91_set_A_periph(AT91_PIN_PC10, 0); /* NCS4/CFCS */
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at91_set_A_periph(AT91_PIN_PC11, 0); /* NCS5/CFCE1 */
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at91_set_A_periph(AT91_PIN_PC12, 0); /* NCS6/CFCE2 */
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cf_data = *data;
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platform_device_register(&at91rm9200_cf_device);
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}
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#else
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void __init at91_add_device_cf(struct at91_cf_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* MMC / SD
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_MMC_AT91RM9200) || defined(CONFIG_MMC_AT91RM9200_MODULE)
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static u64 mmc_dmamask = 0xffffffffUL;
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static struct at91_mmc_data mmc_data;
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static struct resource at91_mmc_resources[] = {
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[0] = {
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.start = AT91_BASE_MCI,
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.end = AT91_BASE_MCI + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_ID_MCI,
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.end = AT91_ID_MCI,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91rm9200_mmc_device = {
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.name = "at91_mci",
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.id = -1,
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.dev = {
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.dma_mask = &mmc_dmamask,
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.coherent_dma_mask = 0xffffffff,
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.platform_data = &mmc_data,
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},
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.resource = at91_mmc_resources,
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.num_resources = ARRAY_SIZE(at91_mmc_resources),
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};
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void __init at91_add_device_mmc(struct at91_mmc_data *data)
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{
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if (!data)
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return;
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/* input/irq */
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if (data->det_pin) {
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at91_set_gpio_input(data->det_pin, 1);
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at91_set_deglitch(data->det_pin, 1);
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}
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if (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_PA27, 0);
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if (data->is_b) {
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/* CMD */
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at91_set_B_periph(AT91_PIN_PA8, 0);
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/* DAT0, maybe DAT1..DAT3 */
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at91_set_B_periph(AT91_PIN_PA9, 0);
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if (data->wire4) {
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at91_set_B_periph(AT91_PIN_PA10, 0);
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at91_set_B_periph(AT91_PIN_PA11, 0);
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at91_set_B_periph(AT91_PIN_PA12, 0);
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}
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} else {
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/* CMD */
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at91_set_A_periph(AT91_PIN_PA28, 0);
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/* DAT0, maybe DAT1..DAT3 */
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at91_set_A_periph(AT91_PIN_PA29, 0);
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if (data->wire4) {
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at91_set_B_periph(AT91_PIN_PB3, 0);
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at91_set_B_periph(AT91_PIN_PB4, 0);
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at91_set_B_periph(AT91_PIN_PB5, 0);
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}
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}
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mmc_data = *data;
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platform_device_register(&at91rm9200_mmc_device);
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}
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#else
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void __init at91_add_device_mmc(struct at91_mmc_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_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
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static struct at91_nand_data nand_data;
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static struct resource at91_nand_resources[] = {
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{
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.start = AT91_SMARTMEDIA_BASE,
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.end = AT91_SMARTMEDIA_BASE + SZ_8M - 1,
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.flags = IORESOURCE_MEM,
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}
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};
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static struct platform_device at91_nand_device = {
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.name = "at91_nand",
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.id = -1,
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.dev = {
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.platform_data = &nand_data,
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},
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.resource = at91_nand_resources,
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.num_resources = ARRAY_SIZE(at91_nand_resources),
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};
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void __init at91_add_device_nand(struct at91_nand_data *data)
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{
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if (!data)
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return;
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/* enable pin */
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if (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 (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 (data->det_pin)
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at91_set_gpio_input(data->det_pin, 1);
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at91_set_A_periph(AT91_PIN_PC1, 0); /* SMOE */
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at91_set_A_periph(AT91_PIN_PC3, 0); /* SMWE */
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nand_data = *data;
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platform_device_register(&at91_nand_device);
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}
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#else
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void __init at91_add_device_nand(struct at91_nand_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* TWI (i2c)
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
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static struct platform_device at91rm9200_twi_device = {
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.name = "at91_i2c",
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.id = -1,
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.num_resources = 0,
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};
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void __init at91_add_device_i2c(void)
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{
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/* pins used for TWI interface */
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at91_set_A_periph(AT91_PIN_PA25, 0); /* TWD */
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at91_set_multi_drive(AT91_PIN_PA25, 1);
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at91_set_A_periph(AT91_PIN_PA26, 0); /* TWCK */
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at91_set_multi_drive(AT91_PIN_PA26, 1);
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platform_device_register(&at91rm9200_twi_device);
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}
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#else
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void __init at91_add_device_i2c(void) {}
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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_SPI_AT91) || defined(CONFIG_SPI_AT91_MODULE) || defined(CONFIG_AT91_SPI) || defined(CONFIG_AT91_SPI_MODULE)
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static u64 spi_dmamask = 0xffffffffUL;
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static struct resource at91_spi_resources[] = {
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[0] = {
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.start = AT91_BASE_SPI,
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.end = AT91_BASE_SPI + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_ID_SPI,
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.end = AT91_ID_SPI,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91rm9200_spi_device = {
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.name = "at91_spi",
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.id = 0,
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.dev = {
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.dma_mask = &spi_dmamask,
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.coherent_dma_mask = 0xffffffff,
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},
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.resource = at91_spi_resources,
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.num_resources = ARRAY_SIZE(at91_spi_resources),
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};
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static const unsigned at91_spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
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void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
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{
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int i;
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unsigned long cs_pin;
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at91_set_A_periph(AT91_PIN_PA0, 0); /* MISO */
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at91_set_A_periph(AT91_PIN_PA1, 0); /* MOSI */
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at91_set_A_periph(AT91_PIN_PA2, 0); /* SPCK */
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/* Enable SPI chip-selects */
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for (i = 0; i < nr_devices; i++) {
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if (devices[i].controller_data)
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cs_pin = (unsigned long) devices[i].controller_data;
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else
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cs_pin = at91_spi_standard_cs[devices[i].chip_select];
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#ifdef CONFIG_SPI_AT91_MANUAL_CS
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at91_set_gpio_output(cs_pin, 1);
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#else
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at91_set_A_periph(cs_pin, 0);
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#endif
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/* pass chip-select pin to driver */
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devices[i].controller_data = (void *) cs_pin;
|
|
}
|
|
|
|
spi_register_board_info(devices, nr_devices);
|
|
at91_clock_associate("spi0_clk", &at91rm9200_spi_device.dev, "spi");
|
|
platform_device_register(&at91rm9200_spi_device);
|
|
}
|
|
#else
|
|
void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
|
|
#endif
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
* RTC
|
|
* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_RTC_DRV_AT91) || defined(CONFIG_RTC_DRV_AT91_MODULE)
|
|
static struct platform_device at91rm9200_rtc_device = {
|
|
.name = "at91_rtc",
|
|
.id = -1,
|
|
.num_resources = 0,
|
|
};
|
|
|
|
static void __init at91_add_device_rtc(void)
|
|
{
|
|
platform_device_register(&at91rm9200_rtc_device);
|
|
}
|
|
#else
|
|
static void __init at91_add_device_rtc(void) {}
|
|
#endif
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
* Watchdog
|
|
* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_AT91_WATCHDOG) || defined(CONFIG_AT91_WATCHDOG_MODULE)
|
|
static struct platform_device at91rm9200_wdt_device = {
|
|
.name = "at91_wdt",
|
|
.id = -1,
|
|
.num_resources = 0,
|
|
};
|
|
|
|
static void __init at91_add_device_watchdog(void)
|
|
{
|
|
platform_device_register(&at91rm9200_wdt_device);
|
|
}
|
|
#else
|
|
static void __init at91_add_device_watchdog(void) {}
|
|
#endif
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
* LEDs
|
|
* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_LEDS)
|
|
u8 at91_leds_cpu;
|
|
u8 at91_leds_timer;
|
|
|
|
void __init at91_init_leds(u8 cpu_led, u8 timer_led)
|
|
{
|
|
at91_leds_cpu = cpu_led;
|
|
at91_leds_timer = timer_led;
|
|
}
|
|
#else
|
|
void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
|
|
#endif
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
* UART
|
|
* -------------------------------------------------------------------- */
|
|
|
|
#if defined(CONFIG_SERIAL_AT91)
|
|
static struct resource dbgu_resources[] = {
|
|
[0] = {
|
|
.start = AT91_VA_BASE_SYS + AT91_DBGU,
|
|
.end = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91_ID_SYS,
|
|
.end = AT91_ID_SYS,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct at91_uart_data dbgu_data = {
|
|
.use_dma_tx = 0,
|
|
.use_dma_rx = 0, /* DBGU not capable of receive DMA */
|
|
};
|
|
|
|
static struct platform_device at91rm9200_dbgu_device = {
|
|
.name = "at91_usart",
|
|
.id = 0,
|
|
.dev = {
|
|
.platform_data = &dbgu_data,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = dbgu_resources,
|
|
.num_resources = ARRAY_SIZE(dbgu_resources),
|
|
};
|
|
|
|
static inline void configure_dbgu_pins(void)
|
|
{
|
|
at91_set_A_periph(AT91_PIN_PA30, 0); /* DRXD */
|
|
at91_set_A_periph(AT91_PIN_PA31, 1); /* DTXD */
|
|
}
|
|
|
|
static struct resource uart0_resources[] = {
|
|
[0] = {
|
|
.start = AT91_BASE_US0,
|
|
.end = AT91_BASE_US0 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91_ID_US0,
|
|
.end = AT91_ID_US0,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct at91_uart_data uart0_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91rm9200_uart0_device = {
|
|
.name = "at91_usart",
|
|
.id = 1,
|
|
.dev = {
|
|
.platform_data = &uart0_data,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = uart0_resources,
|
|
.num_resources = ARRAY_SIZE(uart0_resources),
|
|
};
|
|
|
|
static inline void configure_usart0_pins(void)
|
|
{
|
|
at91_set_A_periph(AT91_PIN_PA17, 1); /* TXD0 */
|
|
at91_set_A_periph(AT91_PIN_PA18, 0); /* RXD0 */
|
|
at91_set_A_periph(AT91_PIN_PA20, 0); /* CTS0 */
|
|
|
|
/*
|
|
* AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
|
|
* We need to drive the pin manually. Default is off (RTS is active low).
|
|
*/
|
|
at91_set_gpio_output(AT91_PIN_PA21, 1);
|
|
}
|
|
|
|
static struct resource uart1_resources[] = {
|
|
[0] = {
|
|
.start = AT91_BASE_US1,
|
|
.end = AT91_BASE_US1 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91_ID_US1,
|
|
.end = AT91_ID_US1,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct at91_uart_data uart1_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91rm9200_uart1_device = {
|
|
.name = "at91_usart",
|
|
.id = 2,
|
|
.dev = {
|
|
.platform_data = &uart1_data,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = uart1_resources,
|
|
.num_resources = ARRAY_SIZE(uart1_resources),
|
|
};
|
|
|
|
static inline void configure_usart1_pins(void)
|
|
{
|
|
at91_set_A_periph(AT91_PIN_PB18, 0); /* RI1 */
|
|
at91_set_A_periph(AT91_PIN_PB19, 0); /* DTR1 */
|
|
at91_set_A_periph(AT91_PIN_PB20, 1); /* TXD1 */
|
|
at91_set_A_periph(AT91_PIN_PB21, 0); /* RXD1 */
|
|
at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD1 */
|
|
at91_set_A_periph(AT91_PIN_PB24, 0); /* CTS1 */
|
|
at91_set_A_periph(AT91_PIN_PB25, 0); /* DSR1 */
|
|
at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS1 */
|
|
}
|
|
|
|
static struct resource uart2_resources[] = {
|
|
[0] = {
|
|
.start = AT91_BASE_US2,
|
|
.end = AT91_BASE_US2 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91_ID_US2,
|
|
.end = AT91_ID_US2,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct at91_uart_data uart2_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91rm9200_uart2_device = {
|
|
.name = "at91_usart",
|
|
.id = 3,
|
|
.dev = {
|
|
.platform_data = &uart2_data,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = uart2_resources,
|
|
.num_resources = ARRAY_SIZE(uart2_resources),
|
|
};
|
|
|
|
static inline void configure_usart2_pins(void)
|
|
{
|
|
at91_set_A_periph(AT91_PIN_PA22, 0); /* RXD2 */
|
|
at91_set_A_periph(AT91_PIN_PA23, 1); /* TXD2 */
|
|
}
|
|
|
|
static struct resource uart3_resources[] = {
|
|
[0] = {
|
|
.start = AT91_BASE_US3,
|
|
.end = AT91_BASE_US3 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91_ID_US3,
|
|
.end = AT91_ID_US3,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct at91_uart_data uart3_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91rm9200_uart3_device = {
|
|
.name = "at91_usart",
|
|
.id = 4,
|
|
.dev = {
|
|
.platform_data = &uart3_data,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = uart3_resources,
|
|
.num_resources = ARRAY_SIZE(uart3_resources),
|
|
};
|
|
|
|
static inline void configure_usart3_pins(void)
|
|
{
|
|
at91_set_B_periph(AT91_PIN_PA5, 1); /* TXD3 */
|
|
at91_set_B_periph(AT91_PIN_PA6, 0); /* RXD3 */
|
|
}
|
|
|
|
struct platform_device *at91_uarts[AT91_NR_UART]; /* the UARTs to use */
|
|
struct platform_device *at91_default_console_device; /* the serial console device */
|
|
|
|
void __init at91_init_serial(struct at91_uart_config *config)
|
|
{
|
|
int i;
|
|
|
|
/* Fill in list of supported UARTs */
|
|
for (i = 0; i < config->nr_tty; i++) {
|
|
switch (config->tty_map[i]) {
|
|
case 0:
|
|
configure_usart0_pins();
|
|
at91_uarts[i] = &at91rm9200_uart0_device;
|
|
at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
|
|
break;
|
|
case 1:
|
|
configure_usart1_pins();
|
|
at91_uarts[i] = &at91rm9200_uart1_device;
|
|
at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
|
|
break;
|
|
case 2:
|
|
configure_usart2_pins();
|
|
at91_uarts[i] = &at91rm9200_uart2_device;
|
|
at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
|
|
break;
|
|
case 3:
|
|
configure_usart3_pins();
|
|
at91_uarts[i] = &at91rm9200_uart3_device;
|
|
at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
|
|
break;
|
|
case 4:
|
|
configure_dbgu_pins();
|
|
at91_uarts[i] = &at91rm9200_dbgu_device;
|
|
at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
at91_uarts[i]->id = i; /* update ID number to mapped ID */
|
|
}
|
|
|
|
/* Set serial console device */
|
|
if (config->console_tty < AT91_NR_UART)
|
|
at91_default_console_device = at91_uarts[config->console_tty];
|
|
if (!at91_default_console_device)
|
|
printk(KERN_INFO "AT91: No default serial console defined.\n");
|
|
}
|
|
|
|
void __init at91_add_device_serial(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < AT91_NR_UART; i++) {
|
|
if (at91_uarts[i])
|
|
platform_device_register(at91_uarts[i]);
|
|
}
|
|
}
|
|
#else
|
|
void __init at91_init_serial(struct at91_uart_config *config) {}
|
|
void __init at91_add_device_serial(void) {}
|
|
#endif
|
|
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
|
|
/*
|
|
* These devices are always present and don't need any board-specific
|
|
* setup.
|
|
*/
|
|
static int __init at91_add_standard_devices(void)
|
|
{
|
|
at91_add_device_rtc();
|
|
at91_add_device_watchdog();
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(at91_add_standard_devices);
|