f230d3f53d
The AT91 I2C driver is currently marked as "broken" due to hardware issues. This patch enables AT91-based platforms to also use the bitbanged GPIO for I2C. This updates platform setup logic (setting up an i2c-gpio device using the same pins as the i2c-at91 device, unless only the BROKEN driver is enabled). Also make use of the new-style initialization of I2C devices using i2c_register_board_info(). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
905 lines
23 KiB
C
905 lines
23 KiB
C
/*
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* arch/arm/mach-at91/at91sam9260_devices.c
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*
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* Copyright (C) 2006 Atmel
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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/platform_device.h>
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#include <linux/i2c-gpio.h>
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#include <asm/arch/board.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/at91sam9260.h>
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#include <asm/arch/at91sam926x_mc.h>
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#include <asm/arch/at91sam9260_matrix.h>
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#include "generic.h"
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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 usbh_resources[] = {
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[0] = {
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.start = AT91SAM9260_UHP_BASE,
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.end = AT91SAM9260_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 = AT91SAM9260_ID_UHP,
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.end = AT91SAM9260_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 at91_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 = usbh_resources,
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.num_resources = ARRAY_SIZE(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(&at91_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 udc_resources[] = {
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[0] = {
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.start = AT91SAM9260_BASE_UDP,
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.end = AT91SAM9260_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 = AT91SAM9260_ID_UDP,
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.end = AT91SAM9260_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 at91_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 = udc_resources,
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.num_resources = ARRAY_SIZE(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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/* Pullup pin is handled internally by USB device peripheral */
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udc_data = *data;
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platform_device_register(&at91_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_MACB) || defined(CONFIG_MACB_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 eth_resources[] = {
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[0] = {
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.start = AT91SAM9260_BASE_EMAC,
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.end = AT91SAM9260_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 = AT91SAM9260_ID_EMAC,
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.end = AT91SAM9260_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 at91sam9260_eth_device = {
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.name = "macb",
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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 = eth_resources,
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.num_resources = ARRAY_SIZE(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_PA19, 0); /* ETXCK_EREFCK */
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at91_set_A_periph(AT91_PIN_PA17, 0); /* ERXDV */
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at91_set_A_periph(AT91_PIN_PA14, 0); /* ERX0 */
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at91_set_A_periph(AT91_PIN_PA15, 0); /* ERX1 */
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at91_set_A_periph(AT91_PIN_PA18, 0); /* ERXER */
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at91_set_A_periph(AT91_PIN_PA16, 0); /* ETXEN */
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at91_set_A_periph(AT91_PIN_PA12, 0); /* ETX0 */
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at91_set_A_periph(AT91_PIN_PA13, 0); /* ETX1 */
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at91_set_A_periph(AT91_PIN_PA21, 0); /* EMDIO */
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at91_set_A_periph(AT91_PIN_PA20, 0); /* EMDC */
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if (!data->is_rmii) {
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at91_set_B_periph(AT91_PIN_PA28, 0); /* ECRS */
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at91_set_B_periph(AT91_PIN_PA29, 0); /* ECOL */
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at91_set_B_periph(AT91_PIN_PA25, 0); /* ERX2 */
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at91_set_B_periph(AT91_PIN_PA26, 0); /* ERX3 */
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at91_set_B_periph(AT91_PIN_PA27, 0); /* ERXCK */
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at91_set_B_periph(AT91_PIN_PA23, 0); /* ETX2 */
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at91_set_B_periph(AT91_PIN_PA24, 0); /* ETX3 */
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at91_set_B_periph(AT91_PIN_PA22, 0); /* ETXER */
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}
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eth_data = *data;
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platform_device_register(&at91sam9260_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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* MMC / SD
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_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 mmc_resources[] = {
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[0] = {
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.start = AT91SAM9260_BASE_MCI,
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.end = AT91SAM9260_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 = AT91SAM9260_ID_MCI,
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.end = AT91SAM9260_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 at91sam9260_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 = mmc_resources,
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.num_resources = ARRAY_SIZE(mmc_resources),
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};
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void __init at91_add_device_mmc(short mmc_id, 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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if (data->vcc_pin)
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at91_set_gpio_output(data->vcc_pin, 0);
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/* CLK */
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at91_set_A_periph(AT91_PIN_PA8, 0);
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if (data->slot_b) {
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/* CMD */
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at91_set_B_periph(AT91_PIN_PA1, 1);
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/* DAT0, maybe DAT1..DAT3 */
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at91_set_B_periph(AT91_PIN_PA0, 1);
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if (data->wire4) {
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at91_set_B_periph(AT91_PIN_PA5, 1);
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at91_set_B_periph(AT91_PIN_PA4, 1);
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at91_set_B_periph(AT91_PIN_PA3, 1);
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}
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} else {
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/* CMD */
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at91_set_A_periph(AT91_PIN_PA7, 1);
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/* DAT0, maybe DAT1..DAT3 */
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at91_set_A_periph(AT91_PIN_PA6, 1);
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if (data->wire4) {
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at91_set_A_periph(AT91_PIN_PA9, 1);
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at91_set_A_periph(AT91_PIN_PA10, 1);
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at91_set_A_periph(AT91_PIN_PA11, 1);
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}
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}
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mmc_data = *data;
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platform_device_register(&at91sam9260_mmc_device);
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}
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#else
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void __init at91_add_device_mmc(short mmc_id, 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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#define NAND_BASE AT91_CHIPSELECT_3
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static struct resource nand_resources[] = {
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{
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.start = NAND_BASE,
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.end = NAND_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 at91sam9260_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 = nand_resources,
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.num_resources = ARRAY_SIZE(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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unsigned long csa, mode;
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if (!data)
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return;
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csa = at91_sys_read(AT91_MATRIX_EBICSA);
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at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC);
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/* set the bus interface characteristics */
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at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0)
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| AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
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at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3)
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| AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
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at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
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if (data->bus_width_16)
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mode = AT91_SMC_DBW_16;
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else
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mode = AT91_SMC_DBW_8;
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at91_sys_write(AT91_SMC_MODE(3), mode | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(2));
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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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nand_data = *data;
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platform_device_register(&at91sam9260_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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/*
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* Prefer the GPIO code since the TWI controller isn't robust
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* (gets overruns and underruns under load) and can only issue
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* repeated STARTs in one scenario (the driver doesn't yet handle them).
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*/
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#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
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static struct i2c_gpio_platform_data pdata = {
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.sda_pin = AT91_PIN_PA23,
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.sda_is_open_drain = 1,
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.scl_pin = AT91_PIN_PA24,
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.scl_is_open_drain = 1,
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.udelay = 2, /* ~100 kHz */
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};
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static struct platform_device at91sam9260_twi_device = {
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.name = "i2c-gpio",
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.id = -1,
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.dev.platform_data = &pdata,
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};
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void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
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{
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at91_set_GPIO_periph(AT91_PIN_PA23, 1); /* TWD (SDA) */
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at91_set_multi_drive(AT91_PIN_PA23, 1);
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at91_set_GPIO_periph(AT91_PIN_PA24, 1); /* TWCK (SCL) */
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at91_set_multi_drive(AT91_PIN_PA24, 1);
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i2c_register_board_info(0, devices, nr_devices);
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platform_device_register(&at91sam9260_twi_device);
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}
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#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
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static struct resource twi_resources[] = {
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[0] = {
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.start = AT91SAM9260_BASE_TWI,
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.end = AT91SAM9260_BASE_TWI + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91SAM9260_ID_TWI,
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.end = AT91SAM9260_ID_TWI,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91sam9260_twi_device = {
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.name = "at91_i2c",
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.id = -1,
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.resource = twi_resources,
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.num_resources = ARRAY_SIZE(twi_resources),
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};
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void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
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{
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/* pins used for TWI interface */
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at91_set_A_periph(AT91_PIN_PA23, 0); /* TWD */
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at91_set_multi_drive(AT91_PIN_PA23, 1);
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at91_set_A_periph(AT91_PIN_PA24, 0); /* TWCK */
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at91_set_multi_drive(AT91_PIN_PA24, 1);
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i2c_register_board_info(0, devices, nr_devices);
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platform_device_register(&at91sam9260_twi_device);
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}
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#else
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void __init at91_add_device_i2c(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_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
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static u64 spi_dmamask = 0xffffffffUL;
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static struct resource spi0_resources[] = {
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[0] = {
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.start = AT91SAM9260_BASE_SPI0,
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.end = AT91SAM9260_BASE_SPI0 + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91SAM9260_ID_SPI0,
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.end = AT91SAM9260_ID_SPI0,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91sam9260_spi0_device = {
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.name = "atmel_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 = spi0_resources,
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.num_resources = ARRAY_SIZE(spi0_resources),
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};
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static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PC11, AT91_PIN_PC16, AT91_PIN_PC17 };
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static struct resource spi1_resources[] = {
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[0] = {
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.start = AT91SAM9260_BASE_SPI1,
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.end = AT91SAM9260_BASE_SPI1 + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91SAM9260_ID_SPI1,
|
|
.end = AT91SAM9260_ID_SPI1,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device at91sam9260_spi1_device = {
|
|
.name = "atmel_spi",
|
|
.id = 1,
|
|
.dev = {
|
|
.dma_mask = &spi_dmamask,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = spi1_resources,
|
|
.num_resources = ARRAY_SIZE(spi1_resources),
|
|
};
|
|
|
|
static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB3, AT91_PIN_PC5, AT91_PIN_PC4, AT91_PIN_PC3 };
|
|
|
|
void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
|
|
{
|
|
int i;
|
|
unsigned long cs_pin;
|
|
short enable_spi0 = 0;
|
|
short enable_spi1 = 0;
|
|
|
|
/* Choose SPI chip-selects */
|
|
for (i = 0; i < nr_devices; i++) {
|
|
if (devices[i].controller_data)
|
|
cs_pin = (unsigned long) devices[i].controller_data;
|
|
else if (devices[i].bus_num == 0)
|
|
cs_pin = spi0_standard_cs[devices[i].chip_select];
|
|
else
|
|
cs_pin = spi1_standard_cs[devices[i].chip_select];
|
|
|
|
if (devices[i].bus_num == 0)
|
|
enable_spi0 = 1;
|
|
else
|
|
enable_spi1 = 1;
|
|
|
|
/* enable chip-select pin */
|
|
at91_set_gpio_output(cs_pin, 1);
|
|
|
|
/* pass chip-select pin to driver */
|
|
devices[i].controller_data = (void *) cs_pin;
|
|
}
|
|
|
|
spi_register_board_info(devices, nr_devices);
|
|
|
|
/* Configure SPI bus(es) */
|
|
if (enable_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); /* SPI1_SPCK */
|
|
|
|
at91_clock_associate("spi0_clk", &at91sam9260_spi0_device.dev, "spi_clk");
|
|
platform_device_register(&at91sam9260_spi0_device);
|
|
}
|
|
if (enable_spi1) {
|
|
at91_set_A_periph(AT91_PIN_PB0, 0); /* SPI1_MISO */
|
|
at91_set_A_periph(AT91_PIN_PB1, 0); /* SPI1_MOSI */
|
|
at91_set_A_periph(AT91_PIN_PB2, 0); /* SPI1_SPCK */
|
|
|
|
at91_clock_associate("spi1_clk", &at91sam9260_spi1_device.dev, "spi_clk");
|
|
platform_device_register(&at91sam9260_spi1_device);
|
|
}
|
|
}
|
|
#else
|
|
void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
|
|
#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)
|
|
{
|
|
/* Enable GPIO to access the LEDs */
|
|
at91_set_gpio_output(cpu_led, 1);
|
|
at91_set_gpio_output(timer_led, 1);
|
|
|
|
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_ATMEL)
|
|
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 atmel_uart_data dbgu_data = {
|
|
.use_dma_tx = 0,
|
|
.use_dma_rx = 0, /* DBGU not capable of receive DMA */
|
|
.regs = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
|
|
};
|
|
|
|
static struct platform_device at91sam9260_dbgu_device = {
|
|
.name = "atmel_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_PB14, 0); /* DRXD */
|
|
at91_set_A_periph(AT91_PIN_PB15, 1); /* DTXD */
|
|
}
|
|
|
|
static struct resource uart0_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9260_BASE_US0,
|
|
.end = AT91SAM9260_BASE_US0 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9260_ID_US0,
|
|
.end = AT91SAM9260_ID_US0,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct atmel_uart_data uart0_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91sam9260_uart0_device = {
|
|
.name = "atmel_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_PB4, 1); /* TXD0 */
|
|
at91_set_A_periph(AT91_PIN_PB5, 0); /* RXD0 */
|
|
at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS0 */
|
|
at91_set_A_periph(AT91_PIN_PB27, 0); /* CTS0 */
|
|
at91_set_A_periph(AT91_PIN_PB24, 0); /* DTR0 */
|
|
at91_set_A_periph(AT91_PIN_PB22, 0); /* DSR0 */
|
|
at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD0 */
|
|
at91_set_A_periph(AT91_PIN_PB25, 0); /* RI0 */
|
|
}
|
|
|
|
static struct resource uart1_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9260_BASE_US1,
|
|
.end = AT91SAM9260_BASE_US1 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9260_ID_US1,
|
|
.end = AT91SAM9260_ID_US1,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct atmel_uart_data uart1_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91sam9260_uart1_device = {
|
|
.name = "atmel_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_PB6, 1); /* TXD1 */
|
|
at91_set_A_periph(AT91_PIN_PB7, 0); /* RXD1 */
|
|
at91_set_A_periph(AT91_PIN_PB28, 0); /* RTS1 */
|
|
at91_set_A_periph(AT91_PIN_PB29, 0); /* CTS1 */
|
|
}
|
|
|
|
static struct resource uart2_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9260_BASE_US2,
|
|
.end = AT91SAM9260_BASE_US2 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9260_ID_US2,
|
|
.end = AT91SAM9260_ID_US2,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct atmel_uart_data uart2_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91sam9260_uart2_device = {
|
|
.name = "atmel_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_PB8, 1); /* TXD2 */
|
|
at91_set_A_periph(AT91_PIN_PB9, 0); /* RXD2 */
|
|
}
|
|
|
|
static struct resource uart3_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9260_BASE_US3,
|
|
.end = AT91SAM9260_BASE_US3 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9260_ID_US3,
|
|
.end = AT91SAM9260_ID_US3,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct atmel_uart_data uart3_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91sam9260_uart3_device = {
|
|
.name = "atmel_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_A_periph(AT91_PIN_PB10, 1); /* TXD3 */
|
|
at91_set_A_periph(AT91_PIN_PB11, 0); /* RXD3 */
|
|
}
|
|
|
|
static struct resource uart4_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9260_BASE_US4,
|
|
.end = AT91SAM9260_BASE_US4 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9260_ID_US4,
|
|
.end = AT91SAM9260_ID_US4,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct atmel_uart_data uart4_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91sam9260_uart4_device = {
|
|
.name = "atmel_usart",
|
|
.id = 5,
|
|
.dev = {
|
|
.platform_data = &uart4_data,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = uart4_resources,
|
|
.num_resources = ARRAY_SIZE(uart4_resources),
|
|
};
|
|
|
|
static inline void configure_usart4_pins(void)
|
|
{
|
|
at91_set_B_periph(AT91_PIN_PA31, 1); /* TXD4 */
|
|
at91_set_B_periph(AT91_PIN_PA30, 0); /* RXD4 */
|
|
}
|
|
|
|
static struct resource uart5_resources[] = {
|
|
[0] = {
|
|
.start = AT91SAM9260_BASE_US5,
|
|
.end = AT91SAM9260_BASE_US5 + SZ_16K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AT91SAM9260_ID_US5,
|
|
.end = AT91SAM9260_ID_US5,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct atmel_uart_data uart5_data = {
|
|
.use_dma_tx = 1,
|
|
.use_dma_rx = 1,
|
|
};
|
|
|
|
static struct platform_device at91sam9260_uart5_device = {
|
|
.name = "atmel_usart",
|
|
.id = 6,
|
|
.dev = {
|
|
.platform_data = &uart5_data,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.resource = uart5_resources,
|
|
.num_resources = ARRAY_SIZE(uart5_resources),
|
|
};
|
|
|
|
static inline void configure_usart5_pins(void)
|
|
{
|
|
at91_set_A_periph(AT91_PIN_PB12, 1); /* TXD5 */
|
|
at91_set_A_periph(AT91_PIN_PB13, 0); /* RXD5 */
|
|
}
|
|
|
|
struct platform_device *at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
|
|
struct platform_device *atmel_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] = &at91sam9260_uart0_device;
|
|
at91_clock_associate("usart0_clk", &at91sam9260_uart0_device.dev, "usart");
|
|
break;
|
|
case 1:
|
|
configure_usart1_pins();
|
|
at91_uarts[i] = &at91sam9260_uart1_device;
|
|
at91_clock_associate("usart1_clk", &at91sam9260_uart1_device.dev, "usart");
|
|
break;
|
|
case 2:
|
|
configure_usart2_pins();
|
|
at91_uarts[i] = &at91sam9260_uart2_device;
|
|
at91_clock_associate("usart2_clk", &at91sam9260_uart2_device.dev, "usart");
|
|
break;
|
|
case 3:
|
|
configure_usart3_pins();
|
|
at91_uarts[i] = &at91sam9260_uart3_device;
|
|
at91_clock_associate("usart3_clk", &at91sam9260_uart3_device.dev, "usart");
|
|
break;
|
|
case 4:
|
|
configure_usart4_pins();
|
|
at91_uarts[i] = &at91sam9260_uart4_device;
|
|
at91_clock_associate("usart4_clk", &at91sam9260_uart4_device.dev, "usart");
|
|
break;
|
|
case 5:
|
|
configure_usart5_pins();
|
|
at91_uarts[i] = &at91sam9260_uart5_device;
|
|
at91_clock_associate("usart5_clk", &at91sam9260_uart5_device.dev, "usart");
|
|
break;
|
|
case 6:
|
|
configure_dbgu_pins();
|
|
at91_uarts[i] = &at91sam9260_dbgu_device;
|
|
at91_clock_associate("mck", &at91sam9260_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 < ATMEL_MAX_UART)
|
|
atmel_default_console_device = at91_uarts[config->console_tty];
|
|
if (!atmel_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 < ATMEL_MAX_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)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(at91_add_standard_devices);
|